SoKeyboardEvent(3)

NAME
SoKeyboardEvent - The SoKeyboardEvent class contains information about keyboard interaction.

When the user presses any keys on the keyboard, these will be translated from a system specific event into a Coin event and sent to the scenegraph by using instances of this class.

SYNOPSIS

#include <Inventor/events/SoKeyboardEvent.h>

Inherits SoButtonEvent.

  Public Types
enum Key { ANY = 0, UNDEFINED = 1, LEFT_SHIFT = 0xffe1, RIGHT_SHIFT, LEFT_CONTROL, RIGHT_CONTROL, LEFT_ALT = 0xffe9, RIGHT_ALT, NUMBER_0 = 0x0030, NUMBER_1, NUMBER_2, NUMBER_3, NUMBER_4, NUMBER_5, NUMBER_6, NUMBER_7, NUMBER_8, NUMBER_9, A = 0x0061, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z, HOME = 0xff50, LEFT_ARROW, UP_ARROW, RIGHT_ARROW, DOWN_ARROW, PAGE_UP, PAGE_DOWN, END, PRIOR = 0xff55, NEXT, PAD_ENTER = 0xff8d, PAD_F1 = 0xff91, PAD_F2, PAD_F3, PAD_F4, PAD_0 = 0xff9e, PAD_1 = 0xff9c, PAD_2 = 0xff99, PAD_3 = 0xff9b, PAD_4 = 0xff96, PAD_5 = 0xff9d, PAD_6 = 0xff98, PAD_7 = 0xff95, PAD_8 = 0xff97, PAD_9 = 0xff9a, PAD_ADD = 0xffab, PAD_SUBTRACT = 0xffad, PAD_MULTIPLY = 0xffaa, PAD_DIVIDE = 0xffaf, PAD_SPACE = 0xff8d, PAD_TAB = 0xff89, PAD_INSERT = 0xff9e, PAD_DELETE = 0xff9f, PAD_PERIOD = 0xff9f, F1 = 0xffbe, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11, F12, BACKSPACE = 0xff08, TAB = 0xff09, RETURN = 0xff0d, ENTER = 0xff0d, PAUSE = 0xff13, SCROLL_LOCK = 0xff14, ESCAPE = 0xff1b, DELETE = 0xffff, KEY_DELETE = DELETE, PRINT = 0xff61, INSERT = 0xff63, NUM_LOCK = 0xff7f, CAPS_LOCK = 0xffe5, SHIFT_LOCK = 0xffe6, SPACE = 0x0020, APOSTROPHE = 0x0027, COMMA = 0x002c, MINUS = 0x002d, PERIOD = 0x002e, SLASH = 0x002f, SEMICOLON = 0x003b, EQUAL = 0x003d, BRACKETLEFT = 0x005b, BACKSLASH = 0x005c, BRACKETRIGHT = 0x005d, GRAVE = 0x0060 }

  Public Member Functions
virtual SoType getTypeId (void) const
SoKeyboardEvent (void)
virtual ~SoKeyboardEvent ()
void setKey (Key key)
Key getKey (void) const
void setPrintableCharacter (const char c)
char getPrintableCharacter (void) const

  Static Public Member Functions
static SoType getClassTypeId (void)
static void initClass (void)
static SbBool isKeyPressEvent (const SoEvent *e, Key whichKey)
static SbBool isKeyReleaseEvent (const SoEvent *e, Key whichKey)
static SbBool enumToString (Key enumval, SbString &stringrep)

Detailed Description

The SoKeyboardEvent class contains information about keyboard interaction.

When the user presses any keys on the keyboard, these will be translated from a system specific event into a Coin event and sent to the scenegraph by using instances of this class.

See also:
    SoEvent, SoButtonEvent, SoMouseButtonEvent, SoSpaceballButtonEvent

    SoEventCallback, SoHandleEventAction

Member Enumeration Documentation

  enum SoKeyboardEvent::Key
This enum contains all keys detected by Coin.

Constructor & Destructor Documentation

  SoKeyboardEvent::SoKeyboardEvent (void)
Constructor.

  SoKeyboardEvent::~SoKeyboardEvent () [virtual]
Destructor.

Member Function Documentation

  SoType SoKeyboardEvent::getTypeId (void) const [virtual]
Returns the actual type id of an instantiated object.

Reimplemented from SoButtonEvent.

  void SoKeyboardEvent::initClass (void) [static]
Initialize the type information data.

  void SoKeyboardEvent::setKey (SoKeyboardEvent::Key keyarg)
Set the value of the key which the user interacted with.

This method is used from the window specific device classes when translating events to the generic Coin library.

See also:
    getKey()

  SoKeyboardEvent::Key SoKeyboardEvent::getKey (void) const
Returns the value of the key which was pressed or released.

Coin adds a new key value called UNDEFINED. This is needed to support GUI toolkits where it's not possible to find exactly which key is pressed, and/or to support non-US keyboards. The Open Inventor design for this class is flawed, since it assumes everybody uses a US keyboard. We recommend using getPrintableCharacter() to find which key is pressed/released, at least for printable non-alphanumerical characters.

See also:
    getPrintableCharacter(), getState()

    wasShiftDown(), wasCtrlDown(), wasAltDown(), getPosition(), getTime()

  void SoKeyboardEvent::setPrintableCharacter (const char c)
Sets the printable character for this keyboard event. If this method is not called when creating an event, getPrintableCharacter() will convert the SoKeyboardEvent::Key value into a printable character. This conversion does not work on non-US keyboards, so we recommend that you set the printable character using this method instead.

This printable character is cleared each time setKey() is called.

This method is an extension versus the Open Inventor API.

See also:
    getPrintableCharacter()

  char SoKeyboardEvent::getPrintableCharacter (void) const
Return ASCII value which would be generated by the key and modifier combination.

NB! If setPrintableCharacter() hasn't been called, this function does not always work as expected, particularly not on non-US keyboards. The Coin GUI toolkits (SoGtk/SoQt/SoWin/SoXt/Sc21) will set the printable character correctly.

See also:
    getKey(), wasShiftDown(), wasCtrlDown(), wasAltDown(), setPrintableCharacter()

  SbBool SoKeyboardEvent::isKeyPressEvent (const SoEvent * e, SoKeyboardEvent::Key whichKey) [static]
Convenience method for quickly checking if the given event is a keypress on the given key, whichKey.

See also:
    isKeyReleaseEvent(), isOfType(), getKey(), getState()

  SbBool SoKeyboardEvent::isKeyReleaseEvent (const SoEvent * e, SoKeyboardEvent::Key whichKey) [static]
Convenience method for quickly checking if the given event is a key release of the given key, whichKey.

See also:
    isKeyPressEvent(), isOfType(), getKey(), getState()

  SbBool SoKeyboardEvent::enumToString (Key enumval, SbString & stringrep) [static]
Converts from an enum value of type SoKeyboardEvent::State to a string containing the enum symbol.

This function is an extension for Coin, and it is not available in the original SGI Open Inventor v2.1 API.

Since:
    Coin 3.0

Author

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