M.A.M.E. Catalog / Launcher II Documentation

CHANGES - v0.71, 26-JAN-2017

fix: general bug fixes
imp: improved functionality
new: newly added functionality
wip: (incomplete) work in progress
doc: documentation changes
inf: informational only

v0.71, 26-JAN-2017:

fix: software-lists: corrected the initial update of custom software artwork when the images are loaded from a zip- or 7z-archive (BT #137)
fix: software-lists: avoid a possible crash when recreating the software-list XML cache DB
imp: updated category.ini to MAME 0.182
imp: updated PDF.js to a newer git revision (as of 12-JAN-2017)
imp: updated the emulator configuration templates to MAME 0.182 (added HTTP server and PortAudio options)
imp: updated the bundled version of zlib to 1.2.11 (see zlib's change-log for details)
imp: updated the bundled version of the LZMA SDK to 16.04 (see LZMA SDK's homepage for details)

v0.70, 30-NOV-2016:

fix: ROMAlyzer / collection rebuilder: corrected the logged uncompressed size of a dump when reading from a ZIP archive through minizip (minor)
fix: image or icon sources weren't refreshed correctly when the decompressor setup (zip, 7z or libarchive) was changed on-the-fly
fix: honor the component setup / tab order when updating the tab icon for the currently selected view
imp: removed all 'terminate emulator' actions as they don't work with modern MAME ('kill emulator' actions still work and got a nicer icon)
imp: updated template format to v0.2.9 which adds an optional 'wip' attribute for emulator options
imp: updated PDF.js to a newer git revision (as of 27-OCT-2016)
imp: updated the os-detection script to also support Arch Linux (also added a distribution specific configuration file for it)
imp: slightly improved start-up performance
imp: updated category.ini to MAME 0.180
imp: renamed all remaining settings that were still using the string "Game" in their names to a "Machine" pendant
imp: emulator configuration templates updated to MAME 0.180 (added new core option 'homepath')
imp: updated minizip to a newer git revision (as of 14-NOV-2016)
new: added a new 'icon cache database' which stores decompressed icon data already mapped to machine IDs (this should speed up icon loading for everyone but can be disabled if not)
new: reimplemented the support for MAME output notifiers in a platform independent way (this requires a modern version of MAME)
new: software-lists: added optional automatic adjustment of the emulator's -statename parameter for easier state-file separation -- see also BT #129

v0.69, 27-OCT-2016:

fix: ROMAlyzer: when identifying dumps contained in zip- or 7z-archives, fall back to a member's file name if its CRC exists multiple times within the archive
fix: when the loading animation was initially hidden and switched on later the gif movie wasn't scaled (minor)
imp: updated category.ini to MAME 0.179
imp: updated minizip to a newer git revision (as of 09-OCT-2016)
imp: updated PDF.js to a newer git revision (as of 30-SEP-2016)
imp: ROMAlyzer: the check-sum wizard has been renamed to 'check-sum finder' and its auto-repair feature has been removed (it's no longer required, the collection rebuilder is much better at this)
imp: emulator configuration templates updated to MAME 0.179 (added new core search path option 'swpath')

v0.68, 28-SEP-2016:

imp: updated minizip to a newer git revision (as of 28-AUG-2016)
imp: updated PDF.js to a newer git revision (as of 31-AUG-2016)
imp: updated category.ini to MAME 0.178
imp: emulator configuration templates updated to MAME 0.178 (added new OSD video option 'monitorprovider')
new: added two new options to the ROM status exporter which allow for exporting only favorites or tagged sets

v0.67, 01-SEP-2016:

fix: build: corrected the VC++ project generation script to use bundled zlib / minizip
fix: options: fixed icon size adjustment for a tool-button added in 0.66
fix: Mac OS X: avoid start-up deadlock and make -cc work again
fix: device configurator: systems that have no slot-device instances for default slot-options weren't customizable
imp: added a 'show all' item to the software-list visibility menu (shown when at least one software-list is currently hidden)
imp: updated category.ini to MAME 0.177
imp: emulator configuration templates updated to MAME 0.177 (added new core render options 'autostretchxy' and 'unevenstretchy')

v0.66, 27-JUL-2016:

fix: device configurator: don't implicitly save device configurations on item activation as it may kill the currently chosen configuration's mappings
fix: fixed a rare start-up crash caused by not waiting for the options to be fully applied
fix: corrected the man-page generation script (scripts/txt2man.sh) to not output an unsupported macro
fix: Qt 5 build fixes (BT #130)
imp: emulator configuration templates updated to MAME 0.176 (changed default value for 'bgfx_avi_name')
imp: updated category.ini to MAME 0.176
imp: build: system-wide zlib and/or minizip libraries can now be used by specifying SYSTEM_ZLIB=1 and/or SYSTEM_MINIZIP=1 -- thanks to Julian Sikorski
imp: build: revised the Makefile to cleanlier support building & installing of qchdman and qmc2-arcade
imp: updated PDF.js to a newer git revision (as of 10-JUL-2016)
new: added a machine list database that's used by additional filtered custom views (WIP-info: the view is already *mostly* working)

v0.65, 01-JUL-2016:

fix: don't prevent the 'automatic ROM check' from starting when the 'Check ROMs' action gets triggered while the machine list is being reloaded
fix: image checker: added obsolete file removal support when using libarchive (missing unintentionally)
fix: image checker: corrected checking for obsolete icon files when read from a directory (this verified only PNGs as valid but the restriction is long gone)
imp: video player: accept youtu.be besides youtube.com when copy-pasting video URLs
imp: updated category.ini to MAME 0.175
imp: emulator configuration templates updated to MAME 0.175 (removed core option 'antialias', added Windows-specific option 'vector_beam_smooth')
imp: changed the default command line for the 7zip removal tool to include -mhc=off (disables header compression which libarchive doesn't support) and -ms=off (disables solid blocks which are generally counter productive for our use case)
imp: pre-caching icons from a directory will no longer block the GUI and works faster now (using QDirIterator)
imp: updated PDF.js to a newer git revision (as of 11-JUN-2016)
imp: hide the splash-screen as soon as the initial start-up is done (in case it's still open by that time - which is likely)
imp: added a new alternative system-notes template contributed by José Marcio Rezende Franco (data/gmn/Concise.html)
new: ROMAlyzer / collection rebuilder: CHD files are now optionally included in the reproduction process (automatically renaming them if required); you can choose between creating hard links, symbolic links and real copies, or to omit CHD reproduction completely (which is the default) -- see also BT #114
new: added a catver.ini optimizer to potentially speed up loading slightly
new: emulator identification is now skipped when the binary's modification time hasn't changed - this generally speeds up loading greatly (but can be disabled in case it causes any trouble)

v0.64, 26-MAY-2016:

imp: updated category.ini to MAME 0.174
imp: using a cleaner base image for the loading animation (rotating circle-arrow)
imp: updated PDF.js to a newer git revision (as of 08-MAY-2016)
imp: ported the built-in audio player to Qt 5 / QtMultimedia (the AudioEffectDialog is deprecated now, it isn't available for Qt 5 builds and will be dropped as soon as we switch to Qt 5 completely; the make option FORCE_PHONON has been removed in favour of the new option MULTMEDIA for Qt 5 builds) -- see also BT #94
imp: added info about using semicolon (to separate multiple items) to the tool-tips of all front-end artwork options
imp: emulator configuration templates updated to MAME 0.174 (changed default value for HLSL option 'vector_length_ratio')

v0.63, 27-APR-2016:

imp: updated minizip to a newer git revision (as of 26-MAR-2016)
imp: updated PDF.js to a newer git revision (as of 31-MAR-2016)
imp: updated category.ini contributed by ASH to MAME 0.173
imp: emulator configuration templates updated to MAME 0.173 (added new core options 'intoverscan' and 'output', added new BGFX post-processing option 'bgfx_avi_name', updated HLSL options)
imp: ROMAlyzer / check-sum scanner: display the scan timer already during the preparation phase of an incremental scan

v0.62, 30-MAR-2016:

fix: ROMAlyzer / check-sum scanner: disable database path selection by the user while scanning
fix: icons loaded through libarchive weren't reloaded after clearing the icon cache
fix: corrected the comparison of option values comprised of float-tuples or -triples (some HLSL options) with their default values
fix: device configurator: nested slot options could visually overlap their treewidget's viewport when initially loaded
fix: system web-search: corrected search pattern / URL generation for systems containing '<unknown>' or '<generic>' in their description or manufacturer name
imp: updated minizip to a newer git revision (as of 19-FEB-2016)
imp: reduced the loading animation's speed which saves a few milliseconds
imp: changed the banner message to include the build OS and machine architecture (instead of the language code)
imp: create the SDLMAME notifier FIFO (/tmp/sdlmame_out) with group write permission turned on so that other users from the same group can use it as well
imp: improved emulator output logging
imp: emulator configuration templates updated to MAME 0.172 (added new OSD input options 'keyboardprovider', 'mouseprovider', 'lightgunprovider' and 'joystickprovider', changed default for 'autoboot_delay' to 0, adjusted HLSL options, removed 'multithreading', added new core render options 'intscalex', 'intscaley' and 'unevenstretchx', added new plugin and BGFX post-processing options)
imp: updated category.ini contributed by ASH to MAME 0.172
imp: QMC2 Arcade: added console type 'none' to suppress all log output
imp: unified (OS-wise) and simplified splash screen handling
imp: optimized machine list loading to save up to ~100ms start-up time
imp: emulator options are alpha-numerically sorted within their sections now
imp: cleaner separation of icon pre-caching and machine list loading
imp: consolidated the log messages for loading favorites and play history
imp: ROMAlyzer: changed the check-sum scanner's 'open/close log' button to look like a regular tool-button
inf: this version marks QMC2's 10-year-anniversary (how time flies!)

v0.61, 24-FEB-2016:

imp: greatly improved machine list loading by doing the actual item insertion more intelligently
imp: hide the machine list / show the loading animation before triggering the actual start-up
imp: removed make option CTIME
imp: updated category.ini contributed by ASH to MAME 0.171
imp: emulator configuration templates updated to MAME 0.171 (added 'bgfx' as additional choice for option 'video' / removed 'ddraw' choice from Windows template, added the new core options 'exit_after_playback', 'record_timecode', 'pluginspath', 'languagepath' and 'language')

v0.60, 27-JAN-2016:

fix: Mac OS X build: SDLmain_tmpl.m/.h aren't necessary for SDL2
fix: ROMAlyzer: use QFileInfo::completeBaseName() instead of QFileInfo::baseName() to correctly query CHD names with multiple dots (minor)
imp: main GUI translations are now also part of the Qt resource and no longer loaded from external .qm files (the make option QT_TRANSLATION has been removed due to this)
imp: updated category.ini contributed by ASH to MAME 0.170
imp: emulator configuration templates updated to MAME 0.170 (readded 'console')
imp: globally renamed all GLC (game list cache) remains to MLC (machine list cache)
imp: generally optimized machine list loading

v0.59, 30-DEC-2015:

fix: custom software artwork wasn't updated / displayed correctly when more than one additional software artwork class was defined -- see also BT #127
fix: main GUI didn't quit until the last independent browser window was closed
fix: corrected query error logging for all database managers
fix: avoid high CPU load by constantly updating software detail
imp: qchdman: added new script-engine functions for platform-independent folder creation and removal
imp: ROMAlyzer / check-sum scanner: improved thread synchronization which speeds up scanning and fixes corner cases where the cross-thread event frequency could get too high
imp: new loading animation (less obtrusive)
imp: slightly speeded up loading the ROM state cache
imp: updated category.ini contributed by ASH to MAME 0.169
imp: emulator configuration templates updated to MAME 0.169 (added new HLSL options 'bloom_blend_mode' and 'shadow_mask_tile_mode')
new: added optional support for libarchive (use make LIBARCHIVE=1 to enable it at build time) -- see also BT #93
new: software-list loading and checking also display a rotating circle animation now (unless the animation is switched off)
inf: the French translation has a new maintainer -- thanks to Yû Voskoboinikov
inf: SDL2 is now preferred - if you still need/want to build for SDL1 and both SDL versions are installed, specifiy SDL=1 on the make command line to forcibly use it

v0.58, 25-NOV-2015:

fix: corrected display of the available category- and version-view options according to the chosen use of catver.ini and/or category.ini
fix: corrected view switching when the machine list wasn't shown during start-up but activated later by clicking the tab header
fix: fixed building with PHONON=0
imp: collection rebuilder: added progress indication to the fix.dat export feature of the missing dumps viewer
imp: MinGW builds: added support for new MAME build tools as of 01-NOV-2015 (older tools are no longer supported!)
imp: emulator configuration templates updated to MAME 0.168 (removed options 'console', 'http', 'http_port' and 'http_path' due to MAME's mongoose removal, updated many HLSL option defaults, removed 'hlsl_preset')
imp: updated category.ini contributed by ASH to MAME 0.168
imp: welcome dialog: added a GUI style selector to allow for avoiding style-related crashes by switching to a working style before actual start-up -- see also BT #121
imp: changed some defaults for front-end / GUI related settings to more modern and recommended values
imp: ROMAlyzer / check-sum scanner: rearranged the scanner's UI controls
imp: removed optional / experimental support for drawing images through OpenGL by the main GUI (this wasn't very useful anyway)
imp: software images that are stored folder-based can now also follow the pattern <software-list-name>/<software-name>/<xxxx>.<fmt> to be found (<xxxx> = 0000 .. 9999, <fmt> = any active image format - the highest number will be found first)
imp: updated the alternative system- and software-notes templates contributed by José Marcio Rezende Franco
new: added support for user-defined additional system- and software-artwork -- see also BT #49
new: added support for customizing parent fallback individually per artwork class -- see also BT #125

v0.57, 28-OCT-2015:

fix: qchdman: corrected the size adjustment of the about dialog to make the credits text fit
fix: arcade mode setup: hide the category filter when neither catver.ini nor category.ini are used
fix: system web-search: corrected the handling of '&' in the generated URL
fix: collection rebuilder: corrected dump mapping for cases where only the SHA-1 is unique
fix: collection rebuilder: the missing dumps viewer wasn't updated correctly under certain circumstances
fix: corrected style sheet handling in order to allow for overwriting fonts through style sheets -- see also BT #120
fix: ROMAlyzer / check-sum scanner: when rows are removed from the database during incremental scan preparation, their keys also need to be removed from the (life) hash cache
imp: updated category.ini contributed by ASH to MAME 0.167
imp: help menu: added QMC2 homepage link (opened in the default browser)
imp: welcome dialog: provide a history of previously selected emulator binaries to choose from (on -r)
imp: notes-templates: prepend doc($xmlDocument) when an XML query misses this variable binding completely (qmc2NEO.queryLocalXml())
imp: removed the restriction of not allowing the machine list to be sorted while a ROM check is running
imp: added "System / BIOS" as a constant category to the arcade mode setup dialog in order to allow for filtering of BIOS sets even if neither catver.ini nor category.ini contain this category
imp: updated the alternative system-notes template contributed by José Marcio Rezende Franco
imp: ROMAlyzer / check-sum scanner: greatly improved the performance of incremental scan preparation (3rd step) in worst case scenarios (most/all files have been updated, or touched)
imp: slightly improved startup performance (UI initialization)
imp: emulator configuration templates updated to MAME 0.167 (added new vector game options 'beam_intensity_weight', 'beam_width_max' and 'beam_width_min', removed 'beam' and adopted all changes to HLSL options)
new: added an option to enable/disable the loading animation
new: software-lists: added display of software compatibility and requirements
new: arcade mode setup: added filtering by machine rank
new: collection rebuilder: added a 'hash cache' option to speed up database lookups during rebuilds
new: collection rebuilder: added a dry run mode which is good for a quick "what if" check and/or for rapidly creating a fix.dat file
inf: the QMC2 homepage has been moved to http://qmc2.batcom-it.net/

v0.56, 30-SEP-2015:

fix: corrected build on Linux x86 (32 bit) when using CFLAGS=-fPIC -- see also BT #115 (thanks to pullmoll)
fix: welcome dialog: make the file browser pre-select the executable file if it exists (minor)
imp: updated category.ini contributed by ASH to MAME 0.166
imp: updated redistributed Qt translations from Qt 4.8.7
imp: compacted the main GUI's layout to save vertical space for machine list views (memory indicator removed)
imp: updated the alternative system- and software-notes templates contributed by José Marcio Rezende Franco
new: about dialog: added memory info on Windows (system information tab)
new: QMC2 Arcade: added support for video snaps and a new back-end & CLI option to enable/disable it (-video on/off) -- see also BT #117
new: QMC2 Arcade: added new -fullscreen and -windowed CLI options to overwrite the stored setting
new: ROMAlyzer / check-sum scanner: added a 'cache' option which will speed up scanning enormously when enabled (consumes about 35 MB additional memory per 100K scanned objects, released after scan completion)
new: ROMAlyzer / check-sum scanner: added display of the scan timer during active scans

v0.55, 26-AUG-2015:

fix: device configurator: avoid crash when a slot-option references a device that doesn't exist in the XML database
fix: corrected a bug in cached machine list loading which confused the ROM check
fix: interrupting any processing caused subsequent ROM checks on tagged sets to not be carried out
fix: corrected visibility switching of the ROM state filter menu during machine list reload
fix: update visible user data (ranks) even if no machine is selected after reload
imp: updated category.ini contributed by ASH to MAME 0.165
imp: the value of the -config_path command line option can now also be a relative path (relative to the current working directory, that is)
imp: slightly improved the performance of loading catver.ini and sorting by alpha-numeric columns
new: added measurement of the 'total start-up time' (printed to the front-end log)

v0.54, 29-JUL-2015:

fix: QMC2 Arcade: DAT-info database: corrected file modification checking to also work on Windows
fix: QMC2 Arcade: corrected the settings key used for querying the machine list cache path (unification bug)
fix: corrected character conversion of file paths for multi-byte character sets (works everywhere except on Windows, so avoid paths with multi-byte characters)
fix: image checker: use a more reliable condition to determine the end of the (threaded) image scan
fix: the initial setup dialog didn't honor the new default setting for 'NativeFileDialogs' on Mac OS X
fix: corrected input focus after full ROM audits (minor)
fix: renamed the former make option MINGW to FORCE_MINGW in order to resolve a conflict with the environment of the latest MAME dev-tools
fix: software-lists: corrected part specification when manually mounting
fix: MiniWebBrowser: hovered links weren't displayed in the browser's status bar while a page was still loading
imp: updated category.ini contributed by ASH to MAME 0.164
imp: updated the alternative system-notes template contributed by José Marcio Rezende Franco
imp: file-chooser: include hidden files / folders
imp: video player: the player's context menu is now also available in full-screen mode and playback can be paused / resumed by left-clicking into the video widget
imp: improved progress indication for machine list loading
imp: optimized the creation of the hierarchical parent/clone view (drastically improves the overall loading performance)
imp: adjusted the ROM state filter menu to work the same way as the software-state filter menu
imp: added make option FORCE_PHONON which - when set to 1 - enables the use of Phonon even with Qt 5
imp: about dialog: added Mac OS X 10.10 & Windows 10 detection for Qt >= 4.8.7 / 5.5.0
imp: replaced minizip 1.1 with the actively maintained minizip code from http://github.com/nmoinvaz/minizip which also fixes support for very large ZIP archives
imp: improved catver.ini loading performance (about twice as fast now) and category/version lookups (QMap => QHash)
new: software-lists: added a 'matched items' counter for the current search pattern to the software-list statistics
new: video player: added support for video snaps (BT #110)
new: system-notes templates: added support for video snaps by providing their file URLs to the template (can be used in an HTML5 <video> container for example)

v0.53, 24-JUN-2015:

fix: collection rebuilder: the default set entity should be 'machine' now (unification bug)
fix: the GeneralSoftwareFolder setting was neither restored nor used (unification bug)
fix: ROMAlyzer: corrected the delta counter (for objects in database) when both the system- and software-mode's check-sum scanners are running in parallel
fix: corrected glitches in splash screen image that were only visible on PowerPC Macs
fix: version- and category-column visibility wasn't correctly restored in both the master list and the hierarchical parent/clone view (BT #106)
fix: restoring the last machine selection didn't work correctly with active ROM state filtering
fix: software-lists: individual software-list state counters weren't correctly logged upon checking
fix: correctly handle view-switching while the category- or version-views are being created
fix: software-lists: corrected software launch combined with a stored device configuration
fix: the device configurator's UI setup wasn't saved upon reload
fix: reopen the notifier FIFO whenever an emulator exits to avoid unnecessary CPU load (caused by a QSocketNotifier bug)
imp: updated the alternative software-notes template contributed by José Marcio Rezende Franco
imp: updated category.ini contributed by ASH to MAME 0.163
imp: ROM status icons are now taken from the embedded resources rather than loaded from file during initialization
imp: globally replaced the term 'game' with a corresponding 'machine' pendant
imp: emulator configuration templates updated to MAME 0.163 (added new communication options to all templates, added 'uimodekey' to the Windows OSD template, updated HLSL options and a number of default values in the Windows OSD template)
imp: smarter system web-search that also takes the manufacturer into account
imp: when a machine has no slot-devices at all the device configurator is completely disabled now
imp: category handling: BIOS and device sets are fully auto-categorized now, uncategorized child sets inherit their parent's category if applicable
imp: improved generation of command line arguments passed to foreign emulators
new: added command line option '-r' (reconfigure) which will run the setup wizard / welcome dialog before starting
new: device configurator: suggest actual MIDI ports (from -listmidi) for midiin/midiout devices
wip: adding support for launching emulators in movie recording mode (BT #107)

v0.52, 27-MAY-2015:

fix: corrected visibility switching of the ROM state filter menu (related to the detail-setup overhaul in 0.50)
fix: DAT-info database: corrected file modification checking to also work on Windows
imp: unified all main GUI variants into one: qmc2-(sdl)mame (because of the unification in MAME) - as a result, you only have to build one binary now and the EMULATOR option as well as variant switching have been removed
imp: updated category.ini contributed by ASH to MAME 0.162
imp: ROMAlyzer: removed the extra frame around the scanner status and centered it vertically
imp: when the emulator binary cannot be identified as MAME this will no longer stop game list processing, instead QMC2 will log a warning and try to continue as if it were MAME (note: bad things can happen if this is not the case!)
imp: added new software notes-template macro $SOFTWARE_PARENT_ID$ (BT #105)
imp: updated the alternative system- and software-notes templates contributed by José Marcio Rezende Franco
imp: category view: BIOS and device sets that aren't available in catver.ini and/or category.ini will now still be inserted as sub-items of their respective categories when the view is created
imp: system- and software-notes templates: added a new JavaScript-usable function to open URLs in the system's default browser (qmc2NEO.openLinkInDefaultBrowser(linkUrl))
imp: all former <game> XML entities are handled as / expected to be <machine> entities now
inf: project renamed to M.A.M.E. Catalog / Launcher II
inf: the old MAWS feature has been dropped in favor of the ProjectMESS feature

v0.51, 30-APR-2015:

imp: updated MESS category.ini contributed by ASH to MESS 0.161
imp: ROMAlyzer / check-sum scanner: commit database transactions in smaller chunks when a single scanned archive contains hundreds or thousands of files
imp: MAME/MESS/UME emulator templates updated to 0.161 (added Mac OS X specific CoreAudio effect options, 'debugger_font' and 'debugger_font_size' to all SDL templates)
imp: replaced all occurrances of qSort() with std::sort() as the qSort() function is marked obsolete (for Qt 5 at least)
inf: YouTube officially took down the v2 API access as of APR-20-2015, so the YouTube feature doesn't work right now (until we support the YouTube v3 API which is already planned)

v0.50, 25-MAR-2015:

fix: software-lists: corrected storing of software favorites to include the list name
fix: updated the catver.ini loader to work with the latest format change
fix: options: corrected short-cut and joystick-function map coloring on 'cancel'
fix: corrected the audio player's progress indication when tracks are stopped
fix: ensure that the software-detail widget is visible when 'undocked' initially
fix: ROMAlyzer: corrected the calculated size shown when dumps are indicated as available in the check-sum database (but missing in the expected files within the ROM path)
fix: corrected the use of the right file-dialog for selecting output files in the 'ROM status export' dialog (BT #102)
imp: updated MESS category.ini contributed by ASH to MESS 0.160
imp: software-lists: added parent image & info fallback (BT #92)
imp: added support for using 'history.dat' as 'sysinfo.dat' (BT #91)
imp: software-lists: software favorites are no longer stored in qmc2.ini but in the user data database (auto-migrated on demand)
imp: main GUI: slightly snappier start-up
imp: main GUI: folder based icons are no longer limited to PNGs (every supported image format can be used now, same as with ZIP-/7z-archived icons)
imp: MAME/MESS/UME emulator templates updated to 0.160 (added OpenGL section and the new 'opengl' choice for -video to all Windows OSD templates)
imp: added players and driver-status columns to the 'ROM status export' feature (BT #103)
new: software-lists: added a parent/clone hierarchy view (BT #81)
new: software-lists: added per system software-list visibility toggling (BT #85)
new: reimplemented the former 'detail setup' feature as a general 'component setup' to allow for changing the order and visibility of all features in all main GUI components
new: the arrangement of all main GUI components can now be defined through the new 'component setup' dialog as well (this replaces the old method and its related settings)
new: added 'parent-only filtering' to the arcade mode setup (BT #96) and the demo mode

v0.49, 25-FEB-2015:

fix: avoid possible crashes when mass tagging items
fix: ROMAlyzer (software-mode): avoid that the widget stays disabled under certain circumstances
fix: process manager: keep white-space characters in (formatted) emulator log messages
fix: Max OS X: avoid crash on initial load (after recreating the emulator caches)
fix: QMC2 Arcade (Mac OS X): ensure that plugins are always loaded from the app bundle and not from a probably installed Qt SDK (which would cause a serious crash)
fix: corrected software-info retrieval -- see also BT #87
fix: avoid that the software-list tab can be moved while it's being created initially (could result in unwanted/uncontrolled tab moves)
imp: Mac OS X build: using MKSPEC=macx-g++ as default Qt mkspec which allows it to build with binary Qt packages (hurray!)
imp: updated MESS category.ini contributed by ASH to MESS 0.159 (also added French translation contributed by remax)
imp: QMC2 Arcade: simplified windowed <=> full screen switching
imp: enabled the sample-checker for MESS targets
imp: ROMAlyzer: added a set-rewriter flag to decide if reproduction is aborted on error (recommended)
imp: ROMAlyzer: integrated the collection rebuilder as a ROMAlyzer tab for improved user-friendliness
imp: removed the inconsequently used 'save/restore layout' options (that is, all relevant windows will save/restore their layout under all circumstances now)
imp: ROMAlyzer: greatly improved the filtering performance of the collection rebuilder
imp: ROMAlyzer: better main-widget integration of the collection rebuilder's features
imp: updated the alternative system-notes template contributed by José Marcio Rezende Franco
imp: template translator: handle section comments and use tabs for identation, the build & run scripts now download required jars automatically
new: ROMAlyzer: added a 'missing dumps viewer' to the collection rebuilder
new: ROMAlyzer: added an 'exact match' flag to both filter expressions of the collection rebuilder

v0.48, 28-JAN-2015:

fix: system-notes: fixed possible duplication of the system notes detail tab (the bug was only effective when Phonon or YouTube features were disabled)
imp: updated MESS category.ini contributed by ASH to MESS 0.158
imp: ROMAlyzer: added an 'enable log output' option to both the check-sum scanner and the collection rebuilder (when disabled, log messages emitted by the respective worker thread are suppressed)
imp: ROMAlyzer: added a 'deep scan' option to the check-sum scanner - when enabled (default), the scanner will uncompress each ZIP/7z member in order to recalculate its check-sums (SHA-1, CRC and dump size), otherwise it will rely on the header check-sums (CRC and dump size)
imp: notes templates: added 3 new notes editor functions to retrieve system-, emu- and software-info within scripts
imp: ROMAlyzer (software-mode): the widget is now shown (but disabled) while the software-list XML cache is rebuilt; it gets enabled when the cache is ready (this avoids working on premature data)
imp: updated the alternative system- and software-notes templates contributed by José Marcio Rezende Franco
imp: MAME/MESS/UME emulator templates updated to 0.158 (added new SDL2 option 'uifontprovider')
imp: interrupt a running search immediately when the system- or software-search's pattern changes
new: due to popular demand, the system search can now be configured to include (default) or exclude BIOS and device sets via the menu attached to the pattern input
new: ROMAlyzer (system-mode): added a ROM state filtering option to the 'ROM Collection Rebuilder'

v0.47, 31-DEC-2014:

fix: Mac OS X build: corrected linker issues when building with clang (LLVM)
fix: avoid crash when caching software-lists while ROM states are being checked
fix: Mac OS X: using the platform's default key-sequence for 'close application' (Command+Q) to stop current processing / quit QMC2
fix: ROMAlyzer (system-mode): sort selected set-names before analyzing them
imp: ROMAlyzer / check-sum scanner: show the progress of running scans in the corresponding status widget as well
imp: updated MESS category.ini contributed by ASH to MESS 0.157
imp: QMC2 Arcade: taught QMC2 Arcade the use of the new DAT-info database added in 0.46 (including fall back to the parent's info if applicable)
imp: QMC2 Arcade / ToxicWaste theme: minor cosmetic corrections regarding the bottom menu-bar
imp: changed the default setting for 'NativeFileDialogs' to true on Mac OS X
imp: build: added make option 'L_LIBDIRFLAGS' which allows for changing the order in which library paths are searched when linking (usually not required, but may be useful for solving Qt library version conflicts)
imp: ROMAlyzer: added a reproduction option to toggle the creation of a ZIP comment (may be annoying)
imp: the main GUI no longer restores the visibility of certain sub-windows as it's prone to trouble and wasn't consequently implemented anyway (i.e. not all sub-windows were restored)
imp: software-lists: utilizing the same (much faster) algorithm for searching within known software as used by the system search
new: ROMAlyzer: added support for software / software-lists (there are two instances of the ROMAlyzer now, one for 'systems' and one for 'software') -- see also BT #61

v0.46, 26-NOV-2014:

fix: image-checker: corrected obsoleteness check for free-standing image files on Windows -- see also BT #78
fix: corrected the HTML encoding of links in software-info DB entries so they actually work now
imp: updated MESS category.ini contributed by ASH to MESS 0.156
imp: ROMAlyzer / check-sum wizard: temporarily set the 'searched check-sum hash' to read-only instead of disabling the widget in order to allow for copying the check-sum while it's being searched
imp: MAME/MESS/UME emulator templates updated to 0.156 (added new core options 'snapbilinear', 'drc_log_uml' and 'drc_log_native' to all templates)
imp: Linux / UNIX / Mac OS X: defaulting to SDL2 templates now since SDLMAME/SDLMESS switched to SDL2 as default build target after 0.155
imp: replaced the colored sphere icons showing the ROM status with new images
imp: using QHash instead of QMap for all internal item lookup tables (less dependent on the number of entries, thus faster in the long run)
imp: drastically improved the performance of all game/machine and software-list views by enabling uniformRowHeights which allows for neat optimizations by Qt (improves loading time as well as sorting and scrolling)
imp: check-sum scanner: lowered the algorithmic complexity of steps 1 and 3 when preparing incremental scans, so this works remarkably faster now
imp: slightly darkened the text-color for ROM-/software-state 'mostly correct' for better readability
new: ROMAlyzer: added a second 'copy to clipboard' function that only copies the bad or missing dumps from a given set and excludes columns that aren't important for this purpose
new: revised the software-list XML cache to be stored in / retrieved from an SQLite 3 database in order to save memory, speed up software-list loading and allow for ROMAlyzer support -- see also BT #63
new: added a new combined database for all supported DAT-info sources (emu-info, game/machine-info and software-info) -- see also BT #80

v0.45, 15-OCT-2014:

fix: ROMAlyzer: the fix.dat export action needs to be disabled initially (minor)
fix: rank images didn't update their color or shape on the fly
fix: ROMAlyzer: corrected set rewriter issues with data read from regular files (their CRCs couldn't be correlated)
fix: ROMAlyzer: the default ZIP compression level (Z_DEFAULT_COMPRESSION) is -1, corresponding to level 6, but the spin-box only supported values from 0 to 9 so the default level was actually 0
fix: avoid crash when checking an individual set's ROM status (probably only seen on slow systems)
fix: avoid start-up crash on gcc 4.9+ builds -- see also BT #77 (thanks to Pulfer)
imp: ROMAlyzer: major UI and logic overhaul (the settings page has been redesigned completely)
imp: updated MESS category.ini contributed by ASH to MESS 0.155
imp: ROMAlyzer: allow set repairing from 7-zip archived reproduction templates
imp: all database updates are fully asynchronous now, using in-memory journals (that's faster on slow I/O, but also slightly more risky)
imp: added support for SDL2 (SDL 1.x remains the default if available, you can force either version using 'SDL=1' or 'SDL=2' on the make command line)
imp: MAME/MESS/UME emulator templates updated to 0.155 (added new templates for SDL2 builds)
imp: updated template format to v0.2.8 which adds support for ignoring <choice> nodes on certain platforms (or generally)
imp: improved mouse event handling of rank-item widgets (also fixes a minor UI bug)
new: ROMAlyzer: added a check-sum database for storing/retrieving paths to dumps available in your file-system by SHA-1 and/or CRC (aka support for unstructured additional ROM paths) -- see also BT #62
new: ROMAlyzer: added a ROM Collection Rebuilder which uses the check-sum database to rebuild a complete ROM path from 'any' given XML (including XML from foreign emulators as long as it's MAME/MESS/UME-compatible) -- see also BT #71
new: ROMAlyzer: added a new 'create backups' option that will create backup copies of all existing files that are going to be modified / overwritten -- see also BT #73
doc: symbolic links to the English HTML docs are no longer required (falls back to English automatically when a language-specific index.html doesn't exist)

v0.44, 23-JUL-2014:

fix: Mac OS X build: resolved type conflicts between LZMA SDK and older XCode headers (< 4.x)
fix: corrected device and BIOS set hiding in the master list when ROM state filtering is disabled
fix: corrected initial opening of zip/7z image archives when the splash screen is disabled
fix: avoid crash when the game/machine list cache creation is prematurely interrupted (upon user request)
fix: MiniWebBrowser: corrected the network item downloader
fix: fixed a bug with individual ROM checks that corrupted the ROM state cache with an invalid entry, causing it to be invalidated during the next reload
fix: welcome dialog: 'NativeFileDialogs' setting didn't work as expected with folder browsers
imp: MAME/MESS/UME emulator templates updated to 0.154 (removed 'hlsl_write' from Windows OSD templates, removed 'memcard_directory' from all templates, added option 'console' to all templates)
imp: speeded up ROM- and software-state filtering as well as game-/machine-/emu-info lookups by using QHash [amortized O(1)] instead of QMap [O(log n)] to store/retrieve states & infos internally
imp: updated MESS category.ini contributed by ASH to 0.154 (4 sets remain uncategorized, help appreciated)
imp: upon merging game/machine info-sources UME variants now keep track if a game's/machine's info came from MAME (history.dat) or MESS (sysinfo.dat) and formats/displays the data accordingly when requested
imp: updated the alternative system- and software-notes templates contributed by José Marcio Rezende Franco
imp: hide game/machine list while filtering it by ROM state (faster)
imp: consecutive duplicate words in SDL joystick names are now cleaned up -- i.e. "Logitech Logitech Extreme 3D" becomes "Logitech Extreme 3D"
imp: QMC2 Arcade: added support for theme-specific default values used by certain settings -- i.e. darkone uses a 'sortByName' setting with an expected default value of 'true', ToxicWaste doesn't (want to) support this setting and uses the global default value of 'false' instead
imp: QMC2 Arcade: be more responsive while loading data from file (especially interesting when using a console window)
imp: updated minizip to version 1.1 which adds support for zip64 (zip archives can now be larger than 4 GB) -- see also BT #45
imp: made category.ini translatable (caution: the new format is not backward-compatible (!) - however, you can use older category.ini's with the new code because translations are optional)
imp: revised slot-info cache creation/loading to be more responsive and faster
imp: changed default paths for 'category.ini' and 'catver.ini' (using the 'data/cat' folder now)
imp: about dialog: added Mac OS X 10.9 & Windows 8.1 detection for Qt >= 4.8.6 / 5.2.0
imp: improved ROM state filtering performance by resetting the internal state of the tree-widget before actually showing/hiding the items
imp: don't be fussy about ignored options when checking emulator configuration templates (they are ignored for good reason, so why confuse users by mentioning them?)
imp: QMC2 Arcade (Windows): when started from a command prompt, console-mode 'terminal' now causes QMC2 Arcade to use this console for logging
imp: QMC2 Arcade / ToxicWaste theme: load icons asynchronously (in a separate thread) in order to not affect flicking performance
new: added a 'user data' database (SQLite 3) to store & retrieve rank information and personal comments per game/machine
new: added a new ranking system and a corresponding 'rank' column to all game/machine lists -- see also BT #46
new: added missing 'restore' feature to the image format setup dialog
new: replaced the foreign IDs menu with a new (tree-)view for foreign emulators and their custom IDs (if any) shown as sub-items of each emulator; the view will only be shown when there are any registered (foreign) emulators -- see also BT #53
new: icons for foreign emulators and their custom IDs can now be selected individually
new: eye-candy: pepped up the static loading & filtering texts with an animation (also used for mass tagging)
new: automatically clear all emulator caches when the output of '-listfull' changes (optional, enabled per default) -- something users often forget is using QMC2's -cc command line switch when updating their MAME/MESS/UME SVN builds; this feature is supposed to automate that as far as possible (changes to devices and software-lists aren't recognized automatically)
new: added command line option '-tc' which will check the emulator configuration template (printing results to stdout) and exit before actual start-up occurs
new: ROMAlyzer: added support for CMP-compatible fix.dat exports -- see also BT #51
new: QMC2 Arcade: added support for multiple image/icon files (per artwork category), supporting the main GUI's ParentImageFallback setting as well
new: icons of game/machine clones now fall back to the parent set's icon when the ParentImageFallback setting is enabled (and an individual icon for the clone isn't available)

v0.43, 07-APR-2014:

fix: avoid crash upon game/machine launch when double-click activation is enabled -- see also BT #44
fix: ROM status exporter: corrected mix up of certain sort criteria indexes
fix: MinGW build: corrected compiler & linker flags for QMC2 Arcade to not open a console window
fix: MiniWebBrowser: corrected a signal/slot auto-connection that caused a Qt warning with Qt 5 (minor)
fix: corrected tagging through Shift+Up/Down when the XML tree is expanded and the cursor is on a sub-item
fix: MiniWebBrowser: corrected the display of super-long links in the status-bar so the browser wouldn't resize in X direction
fix: corrected variant launching (broken in 0.42)
fix: main GUI / key- & joy-mapping: don't trigger disabled actions
fix: MESS device configurator: avoid crash (seen on Windows) when the selected system changes while the available devices and slot-options are currently being determined for another system
fix: initial ROM path check: corrected handling of relative ROM paths
fix: updated the handling of character encoding in software-lists on Windows to modern MAME/MESS/UME -- see also BT #65
fix: corrected the working directory the emulator would use when scanning software-lists (so that a relative hash path would actually be found)
fix: demo-mode (minor): corrected the produced command line when 'maximize' is disabled
imp: updated MESS category.ini contributed by ASH to 0.153
imp: QMC2 Arcade: enabled translation for joystick and key-sequence map debugging
imp: initial ROM path check: output more detailed information for each non-existing/inaccessible ROM path
imp: revised the help menu and added forum, wiki and bug-tracker links (opened in the default browser)
imp: ROMAlyzer: included an item counter in the progress bar when analyzing, reading or writing sets
imp: added LZMA SDK 9.22 (7-zip) data compression/decompression library by Igor Pavlov
imp: optimized loading & parsing of the software-info DB
imp: added a subset of the QtFtp add-on for Qt 5 compatibility with the QFtp and QUrlInfo classes
imp: separated MAME & MESS emulator-info DBs as well as their game-/machine-info counterparts in order to allow for merging them in case of UME
imp: MAME/MESS/UME emulator templates updated to 0.153
imp: system- and software-notes templates: new template macros ($IS_BIOS$ and $IS_DEVICE$) and JS functions (isBios(), isDevice() and romStatus())
imp: Windows: the FileSystemModel's directory scanner thread now uses native Win32 API calls instead of Qt classes -- see also BT #56
imp: added a FileIconProvider wrapper class for QFileIconProvider that uses native Win32 API calls on Windows for better performance (also caches the icons internally)
imp: updated template format to v0.2.7 which adds support for a new relativeTo attribute (valid only for file-type options) which - if set - will be used to generate a path relative to the current value of the referenced directory-type option when using a file-picker; note that this will only work correctly when the referenced directory-type option consists of a single path (i.e. not for semicolon-seperated paths, in which case you'd have to edit the corresponding file-type option manually to reflect relative file paths)
imp: replaced some icons in the classic image-set
imp: produce a nicer command line when the emulator is launched in embedded- or demo-mode (no duplicate or redundant options)
imp: updated the alternative system- and software-notes template contributed by José Marcio Rezende Franco
new: ROMAlyzer: added read-only support for 7z archived ROMs
new: added support for 7z archived icons and image artwork - note that for best performance 7-zipped icons should be packed in a solid block (7z default) and images should be packed non-solid (7za option -ms=off)
new: MESS device configurator: added support for 7z archives to the file-chooser (just like the existing support for zip archives)
new: QMC2 Arcade: added support for game/machine icons (only supported by the ToxicWaste theme at the moment)
new: revised the XML data cache to be stored in / retrieved from an SQLite 3 database in order to save memory and speed up initial loading (per game/machine XML data is queried from the DB on demand)
new: added a web-search feature (currently supporting Google, Wikipedia, DuckDuckGo and Yandex)
new: MiniWebBrowser: added experimental support for anonymous FTP (warning: don't use this for big downloads)
new: added a built-in PDF viewer based on PDF.js (experimental)

v0.42, 24-DEC-2013:

fix: changes to global emulator options weren't correctly merged with the current game/machine-specific ones when the corresponding save-button was pressed and 'overwrite' was selected on the subsequent dialog
fix: don't add 'ghost sets' to internal master list when creating category- or version-views
fix: don't allow initial ROMAlyzer setup while reload is active
fix: do final update of the progress bar before sorting the game/machine list after a reload
fix: emulator configuration widgets now honor the current style's highlight coloring for check-box (bool) type delegates
fix: corrected sRGB profile headers of all included PNGs
fix: software-list: favorite software wasn't shown initially when software-state filtering was active
fix: ROM check: the ROM status indication for the currently selected game/machine wasn't always correctly updated on-the-fly for 'not found' sets and sets w/o ROMs
fix: software-list: corrected combined state- and compatibility-filtering
fix: MESS device configurator: don't show slots that have no user-selectable options
imp: MAME/MESS/UME emulator templates updated to 0.152
imp: main GUI: renamed command line argument -qmc2_config_path to -config_path (the old argument name is still supported, though)
imp: updated MESS category.ini contributed by ASH to his latest version as of 20-DEC-2013
imp: greatly improved the game/machine search feature to be interruptable while the actual search is performed, indicating its progress; added reg-exp like features for the pattern syntax (the special characters $, (, ), *, +, ., ?, [, ], ^, {, |, } and \ must be escaped - by adding \ in front of them - when they are meant literally)
imp: X11 embedder: removed xwininfo requirement (done via Xlib directly now)
imp: QMC2 Arcade: countless improvements to the darkone theme
imp: speed up loading of cached game/machine lists and cached XML data
imp: added the run-time Qt version to the window titles of all variants / applications
imp: setup dialog: shuffled / replaced some button-bar icons
imp: modernized the YouTube video player and ported it to Qt 5 / QtMultimedia
imp: replaced splash screens with new ones based on current logos
imp: ROMAlyzer: indicate optional missing ROMs as such in the report (greyed-out icon) and when logging the CRC miss
new: added support for the use of environment variables in settings strings
new: ROMAlyzer: added data file import (imports all game names contained in a data file as the list of sets to be analyzed)
inf: the new required minimum Qt version is 4.8.0, support for older versions of Qt has been dropped

v0.41, 05-NOV-2013:

fix: QMC2 Arcade: disabled GTK style related work-around for Mac OS X
fix: foreign emulator support: the selection of a foreign emulator in the system's configuration wasn't correctly honored on emu-launch
imp: template-map check: switched the order in which differing default values are logged (the expected value is shown first now, the second value is the one from the currently active template)
imp: QMC2 Arcade / ToxicWaste theme: updated cabinet overlay image made by Jacques Châtelet (JacKc), added auto-stopping of animation and wave effect when emulators are running
imp: new logo images for all QMC2 variants, also by Jacques Châtelet (JacKc)
imp: improved key-sequence and joystick-function scanners
new: QMC2 Arcade: added support for key-sequence mapping
new: QMC2 Arcade: added support for digital joysticks (mapping their functions to key-sequences)
new: Qt CHDMAN GUI: added a script-engine based on QtScript (ECMAScript/JavaScript)
doc: completed all man-pages

v0.40, 18-SEP-2013:

fix: demo- & arcade-mode setup dialogs: corrected driver status filter order
fix: corrected item selection in favorites and play-history when restoring the game/machine selection
fix: corrected device and BIOS set filtering for category- and version-views
fix: QMC2 Arcade: worked around a weird issue on some GTK environments (which may implicitly set a buggy default style causing start-up crashes) by explicitly setting a safe built-in Qt style
fix: QMC2 Arcade: corrected the path that's used when loading images from a ZIP
fix: software-list: don't trigger an unwanted search during the loading phase
fix: reopen/remap the currently selected joystick (if any) after scanning the available sticks
imp: ROMAlyzer: improved logging when CHDs can't be found
imp: variant launcher on Linux/UNIX: added fallback to the current working directory for launching QMC2 variant binaries
imp: implemented a generalized solution for 'MinimizeOnVariantLaunch' and 'MinimizeOnEmuLaunch' which also saves/restores the current window states of all top-level widgets
imp: QMC2 Arcade: added a '-language' command line option (using the main GUI's setting as the default, which is now customizable from within arcade themes as well)
imp: QMC2 Arcade / ToxicWaste theme: the flip direction (cabinet <=> game-card) now adapts to where the user clicks on the 'flippable' item (left/right half of vertical center area vs. top/bottom area), the back-end default options are customizable from within the theme, the quit confirmation is optional now and the image-class shown in the cabinet can be selected on the game-card
imp: suppress the initial ROM state filtering when no states or BIOS / device sets have been disabled (this speeds up loading in many cases), also do not run the actual filter when an individual set's ROM state is checked and doesn't change
imp: slightly improved the loading performance for cached XML data and all dat-info sources
imp: added support for Qt 5.1, however, the recommended Qt version remains 4.8 (when Qt 5 is used, the build rules will automatically disable embedder functionality on X11 platforms as well as all Phonon features on all platforms -- new implementations using QtMultimedia as replacement for Phonon and a rewrite of the embedder code will most likely be done at a later stage
imp: MAME/MESS/UME emulator templates updated to 0.150
imp: ROMAlyzer: changed file-status indication slightly, using capital letters for good and lower letters for bad states
imp: added mamedb.com and progettoemma.net as additional MAWS sources and made progettoemma.net the new default URL
imp: MESS device configurator: renamed available device configurations to stored device configurations and simplified some tool-tips accordingly
imp: emulator control panel: exchanged LED on/off icons with fancier ones and added a third LED column
imp: more SDL joystick related logging
new: added display of software-state info as 'combined statistics' to the software-list widget (similar to the stats-label used for the game/machine list)
new: QMC2 Arcade / ToxicWaste theme: added support for displaying emulator- and game-infos on the game-card and for manual vs. automatic cabinet scaling/positioning
new: added 'tagged only' and 'favorites only' filter options to the arcade- and demo-mode setup dialogs
new: added optional support for additional image formats for all kinds of artwork
doc: added (preliminary) man-pages for all binaries
inf: globally renamed the 'XML game/machine list cache' to just 'XML data cache'

v0.39, 11-JUN-2013:

fix: software-list export: traverse the export map correctly
fix: avoid crash when play was triggered on premature game/machine list data
fix: minor: launch foreign emulators/IDs even if the current game/machine is a device set
fix: don't remove/hide the system-notes detail page when the game-/machine-list is reloaded
fix: slot-devices: default slot-options with non-default BIOS selections weren't passed to the emulator
fix: Windows 8 specific corrections (especially related to the file-chooser and the welcome-dialog)
fix: MESS device configurator: the UI setup wasn't correctly stored/restored under certain circumstances
fix: MESS device configurator: double-clicking stored configurations could lead to a crash
fix: MESS device configurator: adjust tab-orders after dynamically changing device-mappings and slot-options
fix: MESS device configurator: correctly clear all device-maps and reset the slot-configuration to the default one when the 'new configuration' button is clicked
fix: X11 embedder: call XUnmapWindow() & XMapRaised() after releasing an emulator to avoid that its window may be hidden, corrected a centering issue upon resizing of the embed-container
fix: software-lists: floating software-snapshots should never be shown when their contents are the ghost-image
fix: software-lists: corrected a rare UI synchronization issue when switching systems while a software-list is currently being created
fix: software-lists: don't disable the complete widget when one or more expected software-lists weren't found
fix: avoid a rare crash that could be caused by subsequently applying settings very quickly
fix: QMC2 Arcade / ToxicWaste theme: corrected positioning of the imager-viewer (back-side)
fix: options / joystick: automatically select the 'Map' function when the user clicks 'Apply' or 'OK' so joystick function mappings actually get activated (joystick functions won't be mapped when in 'Calibrate' or 'Test' mode)
fix: honor the emulator's working directory (if specified) when verifying ROMs
fix: avoid crash of the front-end when 'mame/mess/ume -listxml' crashes
fix: minor: don't issue an actual search when no game/machine list data has been loaded yet
fix: key-sequence scanner: avoid X Error: BadWindow invalid window parameter warning when grabbing the keyboard -- on X11, the window must the 'mapped' (shown) first
fix: corrected joystick support on Mac OS X by implementing real calibration / axis value normalization -- see also BT #39
imp: added tool-buttons to select/deselect all categories in the demo- and arcade-mode setup dialogs
imp: software-list export: added the 'supported' column to the software-list export feature
imp: software-lists: added a 'clear selection' item to the software-list's context-menu
imp: updated MESS category.ini contributed by ASH to his latest version as of 28-MAY-2013
imp: software-lists: save/restore an individual position of the vertical splitter for use with the software-detail widget
imp: added support for multiple ZIPs per image type, specified as a semicolon-separated list of ZIP file paths
imp: ROMAlyzer: when a set is analyzed, also check for any device-references and offer a context-menu item to analyze them separately
imp: MAME/MESS/UME emulator templates updated to 0.149
imp: HTML editor: added a shorter editor object reference named 'qmc2NEO' as an alternative to 'qmc2NotesEditorObject'
imp: system- and software-notes templates: template macro additions ($EMULATOR_TYPE$, $SOFTWARE_STATUS$, $SOFTWARE_STATUS_UT$ and $SOURCE_FILE$)
imp: updated & renamed the alternative system-/software-notes templates contributed by José Marcio Rezende Franco
imp: MESS device configurator: minor UI improvements using fewer frames and some new icons
imp: all MAME targets: added support for detection of HBMAME
imp: minor speed ups on the initial loading of the game/machine list views
imp: made XML cache loading/creation an interruptable process
imp: X11 and Windows only: the scaling mode for snapshots taken through the embedder can now be selected
imp: using Qt's built-in (= non-native) standard file-dialogs wherever possible (you can optionally switch back to using native dialogs, however, we don't recommend it due to possible issues on some platforms or desktop systems)
imp: added a 'reset' action to all header context-menus (will make all contained columns visible and stretch them equally)
imp: added support for samples to all MESS targets as well (MESS supports samples since sometime after 0.148u3), however, this doesn't include the sample-checker yet
imp: available 'bios' and 'ramsize' options are now displayed with their descriptions (bios) or as human readable values (ramsize), including an indication for the default option and natural sorting
imp: enabled free sorting for shortcut- and joystick-maps
imp: log a warning to the front-end log when QMC2 finds multiple uses of the same set name during game-/machine-list cache creation
imp: integrated zlib updated to version 1.2.8 (see zlib's change-log for details)
new: system- and software-notes templates: added two new slots for use with zipped images: 'qmc2NEO.isZippedImage()' will determine if an image is from a ZIP, 'qmc2NEO.getImageData()' will return the base64-encoded image data which you can use in <img> tags (caution: may be slow and will inflate the HTML enormously -- only use this with the WYSIWYG editor!)
new: HTML editor: added an option to show/hide the HTML tab
new: system- and software-notes templates: added support for querying the XML (from -listxml) using XQuery through the new slots 'qmc2NEO.queryXml()' (will execute an XQuery on the complete XML data, warning: may be slow), 'qmc2NEO.queryLocalXml()' (same as before, restricted to a single game/machine and thus much faster) and 'qmc2NEO.getXmlResult()' (will return the list of result strings as an array)
new: search-patterns used to match games/machines or software-list entries can now be negated on-the-fly through a setup-menu attached to the search-box's find button
new: promoted 'Qt CHDMAN GUI' (see tools/qchdman) to non-WIP status as it meanwhile supports all 'chdman' commands
new: allow merging the file-chooser mapping with the currently set device-mappings
new: added a built-in palette-editor to easily set up UI colors (without the use of a Qt style-sheet or 'qtconfig' which isn't available on all platforms)
new: added a slot-info cache for faster initial loading of data from '-listslots'
new: added selectable zoom-factors for the software-list's floating snapshot-viewer and the embedder's snapshot-list/-viewer
new: X11 and Windows only: snapshots taken through the embedder can now directly replace an image of any type; the image will be stored to the first (primary) folder and a backup file will be created there first (note that this is only available for images stored in folders, not for zipped images)
new: added support for state-checking, -caching & -filtering of software-lists
new: added a source file column to all game-/machine-list views
new: added an option to allow for automatic emulator termination when a new one is launched (i.e. run one emulator instance at a time)
new: added new QMC2 Arcade theme 'darkone' including additional functionality by Pete Beardmore
new: QMC2 Arcade's default values for the command line switches -theme, -console and -graphicssystem now follow any customizations made in the main GUI's arcade mode setup dialog
wip: adding support for freely definable additional artwork classes (system- or software-images)
doc: the QMC2 FAQ has been moved to the wiki

v0.38, 11-JAN-2013:

fix: corrected progress-bar updates when loading catver.ini or category.ini
fix: corrected remapping of key-sequences using the Command key on Mac OS X
fix: the key-sequence scanner now also scans num-pad keys
fix: system-notes: template loading didn't work correctly initially
fix: corrected full-screen switching when the menu-bar is hidden
fix: Windows: corrected HLSL multi-part float handling
fix: fall back to the default style when a previously set style wasn't found
imp: system-notes: template macro additions ($PARENT_ID$, $ROM_STATUS$ and $ROM_STATUS_UT$)
imp: updated MESS/UME variant logos / splash-screens and all app-icons -- thanks to Jacques Châtelet (JacKc)
imp: demo-mode: added an option to launch emulators sequentially rather than randomly
imp: Win32 MinGW build: changed the default for 'MKSPEC' to 'win32-g++-4.6' -- this assumes Qt 4.8, so whoever still uses Qt 4.7 has to pass 'MKSPEC=win32-g++' on the make command (i.e. 'make configure MKSPEC=win32-g++')
imp: image-checker: potentially obsolete items contained in image- or icon-directories include files and folders now
imp: control-panel images are now available to all MESS variants as well (i. e. for use with AntoPISA's new MESS controllers)
imp: YouTube video player: added support for YouTube's new requirement to add session signatures to stream URLs
imp: removed no longer required file-removal tool settings
imp: MAME/MESS/UME emulator templates updated to 0.148
imp: Mac OS X: replaced key-sequence 'Ctrl+O' with 'Ctrl+,' (commonly used short-cut for open preferences dialog); 'Ctrl+O' can now be used for its actual use case on Mac OS X (open/activate item)
imp: software-lists: added a 'supported' column (possible values: yes/no/partially)
imp: HTML editor: the menu-bar can be hidden now, and the editor's contents can be made read-only (i.e. to avoid unintended changes)
imp: system- and software-notes: template loading allows asynchronous URL retrieval now (i.e. remote image URLs), indicating the current progress while loading
imp: HTML editor: replaced the standard QWebView with the MiniWebBrowser's tweaked internal web-view to support JavaScript actions that open new windows
imp: software-notes: template macro additions ($SOFTWARE_SUPPORTED$, $SOFTWARE_SUPPORTED_UT$, $SOFTWARE_INFO$, $SOFTWARE_INFO_STATUS$)
imp: the documentation browser's zoom-setting is now restored as well
imp: added ability to store an option's short-name in the emulator configuration template (i. e. <option default="roms" name="rompath" shortname="rp" type="directory">)
imp: using a proxy-style when Qt 5 is detected to avoid single-click item activations (that's not really suitable for us)
new: ROMAlyzer: the set rewriter and checksum wizard now also load repro-data from regular files (when they are stored in expected folders and have the correct file names / CRCs), the set rewriter can also reproduce sets in individual sub-directories (see 'reproduction type' in ROMAlyzer settings)
new: demo-mode: added filtering by category, driver-status and set-names when selecting eligible sets for the demo
new: image-checker: bad image files (subset of the missing ones) can now be filtered and removed by means of the GUI (so searching for bad image files in the log and manually removing them is no longer required)
new: made a complete rewrite of the sample-checker which wasn't working correctly for ages -- see also BT #31
new: MiniWebBrowser: added a search widget to find arbitrary text in web-pages
new: MiniWebBrowser: added support for persistent cookies (stored in / retrieved from an SQLite database)
new: added PDF.js -- a JavaScript / HTML5 PDF rendering library
new: added support for HTML5 'localStorage' to the MiniWebBrowser and notes-templates (this allows templates to store and retrieve local settings)
new: system- and software-notes templates: exposing the notes-editor object to JavaScript allowing templates to call editor slots directly (!) -- right now, there are four slots you can use: 'qmc2NotesEditorObject.loadCurrentTemplate()' will reload the template itself (for example to react on changed settings), 'qmc2NotesEditorObject.getIconData()' will return the base64-encoded icon data which you can use in <img> tags, 'qmc2NotesEditorObject.getColor()' will open a color-dialog and returns a named color, and finally 'qmc2NotesEditorObject.getImage()' will open a file-dialog to select an image file (see data/gmn/template.html for an example)
new: MESS device configurator: allow in-place renaming of stored device configurations (see context menu)
new: added support for a 'software info DB' using MAME history.dat's new (MAME & MESS) software infos, available in all variants -- thanks to Alexis Bousiges for his efforts and kind cooperation on this matter
new: added ability to reset, revert and/or store individual emulator options by adding a column with respective action tool-buttons that are enabled/disabled according to the option's current ini-state
new: file-chooser: folders can now be included in the file-list and are opened/followed when double-clicked or Enter/Return is pressed on them (there's also a new context-menu item for this); the folder-mode itself can be switched through a new menu-button in the widget's tool-bar (folders are hidden by default, select 'Show folders' to display them or 'Show folders first' to show them on top of the file-list, before any regular files)
new: added a new QML based implementation of the long-awaited 'arcade mode' as a stand-alone application (QMC2 Arcade, see arcade/ folder)
new: added support for Qt 5.0, however, the recommended Qt version remains 4.8 (when Qt 5 is used, the build rules will automatically disable embedder functionality on X11 platforms as well as all Phonon features on all platforms -- this is due to dropped Qt modules, add-on modules may cover this later perhaps)
new: added alternative system- and software-notes templates contributed by José Marcio Rezende Franco
new: added MESS category.ini contributed by ASH
inf: the SVN repository has been moved to a new location -- use one of these URLs now: svn://svn.code.sf.net/p/qmc2/code/trunk or http://svn.code.sf.net/p/qmc2/code/trunk

v0.37, 17-SEP-2012:

fix: changes made to multi-value floats as used in HLSL options weren't updated correctly
fix: demo-mode: don't select device-sets
fix: non-Windows: avoid a rare crash when exiting QMC2 while a running emulator is producing output on the notifier FIFO
fix: don't allow tagging/untagging of parent-items in category- and version-views
fix: file-browsers in emulator configuration dialogs used the wrong standard file-dialog so non-existing file names weren't accepted
fix: ZIP-archived image files weren't correctly opened initially
fix: full-screen switching on Ubuntu 12.04 (Unity desktop) didn't work correctly -- see BT #26
fix: don't pass empty arguments when launching foreign emulators
fix: non-Windows: the optional memory indicator wasn't updated because the corresponding timer didn't fire
fix: MESS device configurator: when a configuration made with the file-chooser was saved, the current slot setup wasn't stored together with it -- rendering the stored item useless when slot customizations were required
fix: corrected ROM status determination for sets containing only CHDs (but no ROMs)
fix: the current emulator selection made on the game/machine-specific configuration tab wasn't saved upon reload
fix: minor: corrected progress-text updates when certain operations are running 'in parallel' (i.e. loading the software-list while a full ROM audit is active)
fix: avoid crash when no game/machine is selected and a 'play' action is triggered
fix: MiniWebBrowser: corrected document history handling with regard to the availability of back- and forward-actions
fix: set locale- and c-string-encoding to UTF-8 globally and handle XML data specifically on Windows to cleanly support international character sets
fix: emulator wasn't launched under certain circumstances when the game/machine was filtered out due to its ROM status
fix: use UTF-8 character encoding when reading game-/machine- and/or emulator-info DB dat-sources
imp: adjusted the ghost-image used for videos (wrong text removed)
imp: depending on the installed codecs, an unused YouTube widget may still cause load on the system, so it's now already destroyed when it's no longer required
imp: updated redistributed Qt translations from Qt 4.8.3
imp: unified the image processing to remove code duplication for different image types
imp: check for the existence of the emulator's executable file before trying to actually run a null process (which may cause issues on Mac OS X)
imp: Mac OS X build: added build option XCODE3 which (if set to 1) will disable the special handling when Qt 4.8+ is detected
imp: MAME/MESS/UME emulator templates updated to 0.147 (added new core options ui_mouse and ui_active, removed option hide_cursor)
imp: added an option to allow for setting QMC2's working directory to be the same as the executable's path (for special use cases, not commonly used)
imp: replaced all QMC2 variant logos and splash-screens with improved versions from JacKc
imp: Qt messages that are sent before the GUI is ready are now printed to the console (stdout) instead of eating them
imp: emulator configuration widgets: all drop-down lists for 'bios' / 'ramsize' selections or options with pre-defined choices are now sorted, possible duplicates are removed and the number of visible items has been increased to 20
imp: the file-chooser's folder selector is now also sorted / sortable
imp: foreign emulator IDs can now contain arguments with white-space characters when they are enclosed in double-quotes
imp: changed the file-chooser's sorting (by file name) to be case-insensitive
imp: updated template format to v0.2.6 which adds support to ignore complete sections (globally or per target OS)
imp: Mac OS X build: don't compile runonce as it's not used on Mac OS X (and has an X11 requirement)
imp: integrated zlib updated to version 1.2.7 (see zlib's change-log for details)
imp: Win32 MinGW build: added OS auto-detection for Windows so specification of MINGW=1 is no longer required (however, if MINGW is set, its value will be used regardless)
imp: when a non-default (= foreign) emulator is selected for the current game/machine, the device-mapper and software-list tabs are disabled now
imp: sets with empty names are now ignored, logging corresponding warnings when the game/machine list cache is recreated (this is a driver bug which also '-validate' will warn about)
imp: Win32 VC++ build: added x64 support to the project generation script
imp: added an advanced line-edit containing an icon to symbolize its function (used in certain search widgets)
imp: changed the default short-cuts for adding games/machines to the favorites list (now Ctrl+J and Ctrl+Shift+J) to free the Ctrl+F short-cut for another/better use (i.e. for finding arbitrary text)
imp: changed the default short-cut for 'About QMC2' (now Ctrl+B) to free the Ctrl+A short-cut which is commonly used for 'select all'
imp: file-chooser: opened ZIP contents are sorted as well
imp: completely revised the image cache internals, now also storing the file path the cached image was loaded from, which can be retrieved via the image's context-menu (the file path is not available in case of zipped images, though)
imp: much better GUI response while recreating the XML cache and checking all ROMs (full audit)
imp: animate searching for game/machine XML data when the user expands an item in the primary (full-detail) view
imp: the menu-bar on Mac OS X is no longer 'native' because this misbehaves with multiple menu-bars that we have now
imp: emulator configuration widgets are now initially hidden and shown after all options were loaded, which speeds up this process a little bit (you won't see a visual difference, though)
imp: added OS detection for Windows 8 and Mac OS X 10.8 to the about dialog when Qt 4.8.3 or higher is used
new: added support for David Haywood's (Haze) Universal Machine Emulator (MAME/MESS unification project) in the form of an additional variant called 'qmc2-ume' or 'qmc2-sdlume' -- see BT #22
new: the YouTube video-player now supports local movie files as well
new: added support for tool-bar customization
new: allow the specification of semicolon-separated lists of folders for ALL image types
new: added support for system- and manufacturer-logo images (i. e. AntoPISA's new MESS marquees)
new: added support for the new MESS category.ini from ASH (UME targets merge the info with data from catver.ini, if applicable)
new: added a check for the ROM path setting (a warning message will pop up when the ROM path hasn't been set or isn't available) -- see BT #28
new: made a complete rewrite of the image-checker dialog, which now allows checks of ALL image types in a multi-threaded way -- this also fixes a long-standing bug on Windows, BTW (see BT #5)
new: MESS device configurator: added support for nested slots, including real slot recursion
new: software-lists: available mount-devices are dynamically updated whenever the device/slot setup changes
new: added 3 new actions to tag / untag / invert tags of all visible sets (according to the current ROM state filter)
new: game/machine detail tabs can now also be reordered directly in the GUI by dragging them with the mouse
new: added a tool action to open a new empty browser window on demand
new: <info> elements contained in a number of software-list entries are now displayed as well (requires very recent MAME/MESS/UME versions after 0.146u5, otherwise <info> elements are not contained in the -listsoftware output)
new: items in all game/machine list views can now be tagged/untagged while the 'cursor' is moved, using the new (customizable) short-cuts Shift+Up and Shift+Down (works much like in 'Total Commander' when tagging/untagging files or folders)
new: the file-chooser now offers an additional context-menu item to open regular files (not ZIP content yet!) externally by launching the default application that's associated with the file's MIME type (or extension)
new: added a 'personal rich-text notes' detail for games/machines (same as the software-notes feature, but for systems this time)
new: added command line option '-cc' which clears (removes) all emulator caches prior to starting up
new: HTML editor: added document preview in built-in browser as well as 'new-from-template' and 'revert-from-saved-file' functionality
new: MESS device configurator: added support for selecting the BIOS used in slot-devices (if applicable)
new: software-lists: optional automatic adjustment of the emulator's -snapname parameter for easier creation of software-snapshots
doc: use a common image directory instead of sym-links
inf: the configuration template for MAMEUIFX32 has been dropped (unmaintained)
inf: long project name changed to M.A.M.E./M.E.S.S./U.M.E. Catalog / Launcher II

v0.36, 21-MAY-2012:

fix: ROMAlyzer: don't stop searching for CHDs at the first ROM path (when there are multiple ROM paths)
fix: allow embedding of (MAME/MESS-like) foreign emulators again -- changes made in 0.35 prevented this completely
fix: changed the default short-cut for the check template map action to 'Ctrl+Shift+C' -- the previous default of 'Ctrl+C' was awkward since it's usually used as short-cut for copy to clipboard
fix: avoid crashes in the game list parser and the ROMAlyzer's checksum wizard due to unexpected nameless entries (first appeared in MESS 0.145u1+)
fix: build: corrected a new set of compile-time bugs related to builds with PHONON=0
fix: ROMAlyzer: after updating CHDs to the latest format, update the CHD header information from the replaced file before comparing the SHA1 checksums
fix: minor: corrected a few texts with regard to the current variant's emulator type (MAME vs. MESS)
fix: file-chooser: expand/collapse ZIP-contents on any type of 'activation' (i.e. not only on mouse double-clicks but also when enter or return are pressed, includes navigation via cursor-keys)
fix: re-enable 'locked' widgets when the emulator can't be started for reading the game/machine data
fix: MESS device configurator: corrected display of file-editor's data when there's only one available device instance (by synchronizing delegate/model updates)
fix: don't start a verification process when the ROM state cache can't be opened for writing
fix: file-chooser: the machine-dependent software-folder was not correctly pre-selected when existing device configurations were loaded in parallel
fix: MESS device configurator: avoid a rare crash when systems are hovered very quickly (asynchronous updates may otherwise work on meanwhile invalid data)
fix: clear favorites and play-history upon reload and make sure the last selected game/machine is correctly re-selected (if applicable)
fix: ROMAlyzer: when repairing a set and the wanted CRC or name (header-)entry already exists in the target ZIP, recreate the complete ZIP file in order to replace the 'bad' file
fix: ROMAlyzer: don't rewrite sets that are analyzed on behalf of the checksum-wizard (even if 'rewrite while analyzing' has been activated)
fix: corrected some additional MESS-specific phrases and removed WIP-only stuff from key- & joystick-mappers
fix: adjusted the behavior of the two main search combo-boxes and tied them more closely
fix: software-lists: support multiple allowed device-interface types
fix: MiniWebBrowser: don't raise main-widget / lower browser window(s) when selecting the path to save a downloadable resource
fix: corrected character conversion when compressing HTML data stored in in-memory and on-disk web-caches (using QString::toLocal8Bit() instead of QString::toLatin1() now)
imp: ROMAlyzer: LRU-caching XML data positions in order to speed up merge-processing
imp: updated the MAME variant's logo with an improved version from JacKc
imp: MESS device configurator: log a warning when '-listslots' crashes
imp: MAME/MESS emulator templates updated to 0.146 (fixed duplication of option 'natural' in MESS templates)
imp: interpret the new 'has no roms' status as 'good' (a.k.a. correct)
imp: foreign emulator support: added $DESCRIPTION$ as an optional argument placeholder for the set's description
imp: ROMAlyzer: interpret emu- and file-states of sets that have no ROMs as 'good' also in case of MAME (new since 0.145u2)
imp: ROM status check: circumvent the corner case of sets without ROMs also in case of MAME (new since 0.145u2, see 'ide_baseboard' and 'hdd' devices)
imp: ROMAlyzer: log possible driver XML bugs where a merge-name is given without a parent set to take it from (other than this, these cases are ignored and treated as 'good' merge-states)
imp: when registering foreign emulators, the existence of the $ID$ placeholder on the supplied command line is now indicated through a green/yellow colored label (when $ID$ is missing, the configuration will most likely not work)
imp: allow the specification of the emulator's working directory already in the welcome dialog
imp: updated redistributed Qt translations from Qt 4.8.1
imp: honor 'players' value for device sets where applicable (i.e. some input devices)
imp: MESS device configurator: sort slot-options alphanumerically, add a separator between 'not used' and available options, allow disabling of default slot-options and indicate them as such
imp: main widget: revised all auto-connected menu actions to use QAction::triggered(bool) (instead of a meanwhile deprecated signal)
imp: slightly better responsiveness while loading cached XML data
imp: Mac OS X build: avoid using xcodebuild for Qt 4.8+
imp: replaced the 'MESS wiki driver look-up' with a ProjectMESS-based search since most data in the MESS wiki was lost, and ProjectMESS is the new de-facto '#1 web-resource for all things MESS' :)
imp: the MiniWebBrowser's zoom-factor can now also be specified through a (mouse) wheel-event when the Ctrl-key is pressed at the same time (like most standalone browsers)
new: ROMAlyzer: added support for CHD v5 (new since MAME/MESS 0.145u1) -- built-in analysis will work for CHD v3, v4 and v5; however, note that all 'CHD manager' functionality requires chdman from MAME/MESS 0.145u1+ now
new: ROMAlyzer: added a function to store the current log contents to a file
new: added tear-off capability to all menus within menu-bars
new: added freely customizable lists of game/machine IDs (and descriptions) that can be attached to foreign emulators and be presented / launched through the menu
new: both the MAWS (off-line) and the ProjectMESS driver look-up features save/restore their zoom-factors now
new: experimental support for Qt 5, which is in alpha-stage right now (there will be no embedder support on X11 platforms in the first place, since they dropped some X11-specific classes like the QX11EmbedContainer -- an add-on for Qt 5 to revive this functionality is planned, but will probably not be available before Qt 5.1)
new: YouTube video-player: you can now also 'paste' a YouTube video URL into the video-player itself, which will then start playing the respective video without attaching it to the play list
new: about dialog: added output of run-time Qt library paths to the system-information page
new: integrated zlib 1.2.6 to remove the extra requirement
new: the MiniWebBrowser now supports and allows pop-up window requests when the build option BROWSER_JAVASCRIPT is enabled (which is the default)
new: build option BROWSER_EXTRAS is now enabled by default which also activates the use of QtWebKit's Web Inspector in the MiniWebBrowser for everyone
new: added a Spanish translation -- thanks to Daniel Barrado
wip: adding a set rename tool to the ROMAlyzer which uses the -listxml outputs from both the old and the current emulator to gather the changes automagically
wip: adding a Romanian translation (mostly done) -- thanks to Mihai Boisteanu
wip: adding an Italian translation -- thanks to Stefano Cereda
wip: adding a stand-alone CHDMAN GUI (see tools/qchdman/)
wip: adding a Greek translation -- thanks to Kostas Albanidis
wip: adding a Swedish translation -- thanks to Daniel Nylander

v0.35, 06-FEB-2012:

fix: minor: hide the software-list favorites column 'device configuration' for MAME targets as it's a MESS-only feature
fix: minor: corrected the main progress-bar's visual behavior when ROM status checking and software-list caching are running in parallel
fix: MAME targets: the software-list widget wasn't cleared upon reload
fix: the last active detail-tab's header wasn't always shown initially
fix: software-snapshots were positioned incorrectly under certain circumstances
fix: corrected a few minor log-scrolling issues
fix: individual ROM checks didn't work correctly when the ROM status was 'not found' since output is written to stderr in this case and not to stdout as otherwise
fix: YouTube video-player: avoid crashes on exit by waiting for all application threads to finish before returning to the OS
fix: YouTube video-player: attached videos could get lost when changing the current game/machine very quickly
fix: ROMAlyzer: correctly 'remove' the progress-bar item-widget before deleting it (worked w/o until Qt 4.7.x, crashed since Qt 4.8.0)
fix: corrected restoration of main-widget's layout when the front-end was showing a maximized embedded emulator during clean up on the previous run
fix: corrected Windows 64-bit builds with DEBUG=2 (see BT #21)
fix: file-chooser: the underlying item model now produces correct minimum widths for icon-less columns (size and modification date)
fix: embedder on X11: corrected initial input focus after launching a new embedded emulator
imp: ROM status exporter: additional output-format choice ('all formats') to export the ROM states to all three formats at once
imp: when a software-list can't be found (though it's expected to exist), leave the software-list widget disabled and don't try to parse the invalid XML (a warning will still be logged since this is actually an emulator bug, but probably also a wanted/known situation as told by etabeta78)
imp: MAME/MESS emulator templates updated to 0.145
imp: faster display of software-snapshots by using tool-tip like window attributes for the viewer widget (this also fixes bad-window errors on X11)
imp: slightly bigger icons in all game/machine list views
imp: updated template format to v0.2.5 which adds support for an optional 'part' attribute that can be used in file-type options to specify the extracted part of the file's path (currently only "basename" is supported, used by the effect-option)
imp: loading of software-lists can be interrupted now and is indicated accordingly for larger lists (i.e. cpc_cass/cpc_flop)
imp: Mac OS X build: moved macx/Info.plist.in to arch/Darwin/Info.plist.in where it belongs
imp: build: added a 'configure' make target to create platform dependent project file(s) and stop (i.e. to open it in XCode and build from there on Mac OS X, or to run MinGW make in job-server mode on Windows)
imp: MiniWebBrowser: browser-plugins are now enabled per default (see make option BROWSER_PLUGINS)
imp: build: removed make option PRETTY as it's no longer usable in the supported Qt versions
imp: Mac OS X build: provide application icons (.icns) to be associated with the apps
imp: created new logo images (thanks to JacKc)
imp: ROMAlyzer: checksum-wizard: when the user changes the checksum-type and the current checksum is available in the 'other' type as well, display it in the line-edit (not available when the checksum is edited manually)
new: the ROM state filtering mechanism can now be enabled/disabled on-the-fly (the default is 'enabled', just as before)
new: added support for multi-device software-list entries as well as automatic vs. manual mount-device selection (includes the ability to mix parts from different software-list entries)
new: added an alternative game/machine search entry box to the tool-bar
new: added a CSV and ASCII export tool for software-lists
new: added import/export functionality for software-list favorites
new: changed the MESS device configurator so it offers available device-instances based on the slot-options specified, thus allowing to mount them as well (through the legacy device-mapper and the file-chooser)
new: added ZIP support for software-snapshots
new: X11 and Windows only: game/machine icons are now also shown on the tab headers of embedded emulators
new: all images have an additional context-menu item ('refresh') now to clear and reload their cached pendants
new: integrated the HTML editor from Qt Labs / graphics-dojo for all kinds of (upcoming) rich-text editing purposes
new: added content-zoom to the MiniWebBrowser
new: top-level windows can now optionally be minimized upon emulation launch and automatically restored when the (last) emulator instance has ended
new: YouTube video-player: added a semi-transparent overlay widget to display status information at the bottom of the player's viewport
new: software-lists: added software-compatibility filtering
new: added a 'MESS wiki' detail to look up available driver information
new: added an option to suppress all messages sent through QDebug and related convenience functions
new: added an optional startup splash-screen utilizing the new logos
new: added support for emulator-embedding on Windows (!) -- note, however, that embedding of emulators running in Direct 3D mode ('-video d3d') has two known issues: full-screen switching will lead to a crash (of the emulator) and screen-shots aren't taken correctly from within the GUI (just a black image)
new: X11 and Windows only: added an option to select the default launch-mode used when starting emulation by activating (i.e. double-clicking) an entry in any list
new: X11 and Windows only: replaced the style-controlled embedder-release icons (usually a red 'X' which some users wrongly interpreted as 'exit emulator') with a more suitable / less irritating and style-independent icon by setting explicit style-sheets on the tab-bars of all embedders
new: added two options to allow for hiding of BIOS and/or device sets in all master-lists (see Front end -> Game/Machine list in the main setup dialog) -- both will trigger an automatic reload when changed
new: added a dock-able/floating software-detail widget with a separate snapshot-browser, a ProjectMESS software-lookup feature, and an HTML editor/viewer for personal rich-text software-notes
inf: the new required minimum Qt version is 4.7.0, support for older versions of Qt has been dropped

v0.34, 15-NOV-2011:

fix: MAME targets: don't auto-resize the last column in the game/machine list views when toggling the use of catver.ini (it annoys more than it helps)
fix: build: corrected compile-time bugs related to builds with PHONON=0
fix: adjust icon sizes when showing the audio-effect dialog initially
fix: removed flicker on changing game-/machine-list views
fix: corrected a few MESS-specific phrases
fix: corrected delegate-sizing issues when there's only one device instance in the MESS device setup
fix: Mac OS X: set ROMAlyzer's parent widget in order to avoid context-menu displacement
fix: ROMAlyzer: the ROM set's context-menu should be available also when the set rewriter hasn't been enabled
fix: MAME targets: category- and version-views were not created initially when switched to via the view-selector combo-box
fix: MAME targets: demo-mode: avoid floating-point exception when no games were selected by the filter
imp: updated minizip to version 1.01h
imp: YouTube video player: decode (percent-)encoded error messages before logging them
imp: setup dialog: conflated all formerly split emulator- and game-info DB settings
imp: MAME/MESS emulator templates updated to 0.144
imp: ROMAlyzer: better 'no dump' indication
imp: enabled audio-effect widgets for MinGW builds (they work fine when the official Qt DLLs are being used, otherwise set the new AUDIOEFFECTDIALOGS make option to 0 in order to disable them)
imp: X11 only: minor embedder optimizations regarding widget resizing
imp: YouTube video player: added support for YouTube's new way of presenting video stream URLs
imp: general overhaul of the main-widget's layout parameters to allow for a somewhat more 'compact' design
imp: the working directory of the external ROM tool can be specified now
imp: build: added EMU as an alias for the EMULATOR make option
imp: locale-aware statistics in the ROM status exporter and the GUI's ROM status bar
imp: updated redistributed Qt translations from Qt 4.7.4
new: added a 'driver status' column to all game/machine lists (or views)
new: Windows only: the other variant's exe file can now be specified explicitly (the default is to search for it only in the directory where the calling variant was started from) -- this works also when you rename the exe files; you can additionally specify the command line arguments passed to the other variant (note that this is an independent setting and would also be used when the variant exe is not overwritten!)
new: support for MAME's/MESS's new device-referencing (new since 0.143u2+ SVN)
new: Mac OS X only: the tool-bar can now optionally be unified with the title-bar
new: MESS targets: support for machine-specific device slots / slot options, integrated with the MESS device configurator
new: the MESS variants now use their own logo, and all variants use new unified applications icons -- thanks to Anna Wu
new: added a new tool-function to allow for forced removal of ALL emulator related caches at once
new: added support for the new 'messinfo.dat' file from AntoPISA (see http://www.progettosnaps.net/messinfo/)
new: completed the support for software-lists in MAME and MESS (ZIP-support for software-snaps will be added later)
new: customizable columns in all game-/machine-list and software-list views
new: MESS targets: a new 'file chooser' dialog has been added to the MESS device configurator as an easy-to-use alternative to the manual setup
new: MESS targets: device type icons are now displayed to better symbolize MESS device instances
new: ROMAlyzer: you can specify an additional source ROM path for the set rewriter in order to allow for merging updates
new: added support for item-tagging and a number of related operations that can now also be performed for tagged games/machines
new: for ZIP-archived icons (actually the only practical way to store them) support for ICO format has been added -- this means that for instance MAMU's icon can now be used directly, w/o conversion to PNGs!
new: icons are now also supported for all MESS targets
wip: adding a Java (Eclipse/SWT) based editor/translator for emulator templates (see tools/qmc2_options_editor_java) -- thanks to Marcelo Bossoni
inf: note that the versioning pattern has changed: we now just count the releases and follow the simple scheme '0.XX', where XX is the release number
inf: note that the minimum required MESS revision now is SVN r12599 (or MESS 0.143u3)

Ancient change-log entries prior to QMC2 v0.34 are no longer maintained in the SVN tree since v0.39!

The archived change-log can be downloaded from here in case you're interested.