gtkmm: Gtk::AlertDialog Class Reference

gtkmm 4.18.0

Public Member Functions | Static Public Member Functions | Protected Member Functions | Related Symbols | List of all members
Gtk::AlertDialog Class Reference
Dialogs

A Gtk::AlertDialog object collects the arguments that are needed to present a message to the user. More...

`#include <gtkmm/alertdialog.h>`

Inheritance diagram for Gtk::AlertDialog:
[legend]

## Public Member Functions
| AlertDialog (AlertDialog && src) noexcept
AlertDialog & | operator= (AlertDialog && src) noexcept
| ~AlertDialog () noexcept override
GtkAlertDialog * | gobj ()
| Provides access to the underlying C GObject.
const GtkAlertDialog * | gobj () const
| Provides access to the underlying C GObject.
GtkAlertDialog * | gobj_copy ()
| Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs.
bool | get_modal () const
| Returns whether the alert blocks interaction with the parent window while it is presented.
void | set_modal (bool modal=true)
| Sets whether the alert blocks interaction with the parent window while it is presented.
Glib::ustring | get_message () const
| Returns the message that will be shown in the alert.
void | set_message (const Glib::ustring & message)
| Sets the message that will be shown in the alert.
Glib::ustring | get_detail () const
| Returns the detail text that will be shown in the alert.
void | set_detail (const Glib::ustring & detail)
| Sets the detail text that will be shown in the alert.
std::vector< Glib::ustring > | get_buttons () const
| Returns the button labels for the alert.
void | set_buttons (const std::vector< Glib::ustring > & labels) const
| Sets the button labels for the alert.
int | get_cancel_button () const
| Returns the index of the cancel button.
void | set_cancel_button (int button)
| Sets the index of the cancel button.
int | get_default_button () const
| Returns the index of the default button.
void | set_default_button (int button)
| Sets the index of the default button.
void | choose (Window & parent, const Gio::SlotAsyncReady & slot, const Glib::RefPtr< Gio::Cancellable > & cancellable={}) const
| Shows the alert to the user.
void | choose (const Gio::SlotAsyncReady & slot, const Glib::RefPtr< Gio::Cancellable > & cancellable={}) const
| A choose() convenience overload.
int | choose_finish (const Glib::RefPtr< Gio::AsyncResult > & result) const
| Finishes the choose() call.
void | show (Window & parent)
| Shows the alert to the user.
void | show ()
| A show() convenience overload.
Glib::PropertyProxy< bool > | property_modal ()
| Whether the alert is modal.
Glib::PropertyProxy_ReadOnly< bool > | property_modal () const
| Whether the alert is modal.
Glib::PropertyProxy< Glib::ustring > | property_message ()
| The message for the alert.
Glib::PropertyProxy_ReadOnly< Glib::ustring > | property_message () const
| The message for the alert.
Glib::PropertyProxy< Glib::ustring > | property_detail ()
| The detail text for the alert.
Glib::PropertyProxy_ReadOnly< Glib::ustring > | property_detail () const
| The detail text for the alert.
Glib::PropertyProxy< std::vector< Glib::ustring > > | property_buttons ()
| Labels for buttons to show in the alert.
Glib::PropertyProxy_ReadOnly< std::vector< Glib::ustring > > | property_buttons () const
| Labels for buttons to show in the alert.
Glib::PropertyProxy< int > | property_cancel_button ()
| Determines what happens when the `Escape` key is pressed while the alert is shown.
Glib::PropertyProxy_ReadOnly< int > | property_cancel_button () const
| Determines what happens when the `Escape` key is pressed while the alert is shown.
Glib::PropertyProxy< int > | property_default_button ()
| Determines what happens when the `Return` key is pressed while the alert is shown.
Glib::PropertyProxy_ReadOnly< int > | property_default_button () const
| Determines what happens when the `Return` key is pressed while the alert is shown.
Public Member Functions inherited from Glib::Object
| Object (const Object &)=delete
Object & | operator= (const Object &)=delete
| Object (Object &&src) noexcept
Object & | operator= (Object &&src) noexcept
void * | get_data (const QueryQuark &key)
void | set_data (const Quark &key, void *data)
void | set_data_with_c_callback (const Quark &key, void *data, GDestroyNotify notify)
void | set_data (const Quark &key, void *data, DestroyNotify notify)
void | remove_data (const QueryQuark &quark)
void * | steal_data (const QueryQuark &quark)
Glib::RefPtr< Glib::Object > | wrap (GObject *object, bool take_copy=false)
Public Member Functions inherited from Glib::ObjectBase
| ObjectBase (const ObjectBase &)=delete
ObjectBase & | operator= (const ObjectBase &)=delete
void | set_property_value (const Glib::ustring &property_name, const Glib::ValueBase &value)
void | get_property_value (const Glib::ustring &property_name, Glib::ValueBase &value) const
void | set_property (const Glib::ustring &property_name, const PropertyType &value)
void | get_property (const Glib::ustring &property_name, PropertyType &value) const
PropertyType | get_property (const Glib::ustring &property_name) const
sigc::connection | connect_property_changed (const Glib::ustring &property_name, const sigc::slot< void()> &slot)
sigc::connection | connect_property_changed (const Glib::ustring &property_name, sigc::slot< void()> &&slot)
void | freeze_notify ()
void | thaw_notify ()
virtual void | reference () const
virtual void | unreference () const
GObject * | gobj ()
const GObject * | gobj () const
GObject * | gobj_copy () const

## Static Public Member Functions
static GType | get_type ()
| Get the GType for this class, for use with the underlying GObject type system.
static Glib::RefPtr< AlertDialog > | create ()
static Glib::RefPtr< AlertDialog > | create (const Glib::ustring & message)
| Creates a new Gtk::AlertDialog with the given message.

## Protected Member Functions
| AlertDialog ()
| AlertDialog (const Glib::ustring & message)
| Creates a new Gtk::AlertDialog with the given message.
Protected Member Functions inherited from Glib::Object
| Object ()
| Object (const Glib::ConstructParams &construct_params)
| Object (GObject *castitem)
| ~Object () noexcept override
Protected Member Functions inherited from Glib::ObjectBase
| ObjectBase ()
| ObjectBase (const char *custom_type_name)
| ObjectBase (const std::type_info &custom_type_info)
| ObjectBase (ObjectBase &&src) noexcept
ObjectBase & | operator= (ObjectBase &&src) noexcept
virtual | ~ObjectBase () noexcept=0
void | initialize (GObject *castitem)
void | initialize_move (GObject *castitem, Glib::ObjectBase *previous_wrapper)

## Related Symbols
(Note that these are not member symbols.)
Glib::RefPtr< Gtk::AlertDialog > | wrap (GtkAlertDialog * object, bool take_copy=false)
| A Glib::wrap() method for this object.

## Additional Inherited Members
Public Types inherited from Glib::Object
typedef void(*)(gpointer data | DestroyNotify)

## Detailed Description

A Gtk::AlertDialog object collects the arguments that are needed to present a message to the user.

The message is shown with the choose() method. This API follows the GIO async pattern, and the result can be obtained by calling choose_finish().

If you don't need to wait for a button to be clicked, you can use show().

Since gtkmm 4.10

## Constructor & Destructor Documentation

## ◆ AlertDialog() [1/3]

Gtk::AlertDialog::AlertDialog | ( | AlertDialog && | src | ) |
| noexcept

## ◆ ~AlertDialog()

Gtk::AlertDialog::~AlertDialog | ( |  | ) |
| overridenoexcept

## ◆ AlertDialog() [2/3]

Gtk::AlertDialog::AlertDialog | ( |  | ) |
| protected

## ◆ AlertDialog() [3/3]

Gtk::AlertDialog::AlertDialog | ( | const Glib::ustring & | message | ) |
| explicitprotected

Creates a new Gtk::AlertDialog with the given message.

Parameters

  message | The message.

## Member Function Documentation

## ◆ choose() [1/2]

void Gtk::AlertDialog::choose | ( | const Gio::SlotAsyncReady & | slot,
|  | const Glib::RefPtr< Gio::Cancellable > & | cancellable = {} ) const

A choose() convenience overload.

## ◆ choose() [2/2]

void Gtk::AlertDialog::choose | ( | Window & | parent,
|  | const Gio::SlotAsyncReady & | slot,
|  | const Glib::RefPtr< Gio::Cancellable > & | cancellable = {} ) const

Shows the alert to the user.

It is ok to pass `nullptr` for the callback if the alert does not have more than one button. A simpler API for this case is show().

Since gtkmm 4.10

Parameters

  parent | The parent window.
  cancellable | A cancellable to cancel the operation.
  slot | A callback to call when the operation is complete.

## ◆ choose_finish()

int Gtk::AlertDialog::choose_finish | ( | const Glib::RefPtr< Gio::AsyncResult > & | result | ) | const

Finishes the choose() call.

Since gtkmm 4.10

Parameters

  result | The result.

Returns
  The index of the button that was clicked, or -1 if the dialog was cancelled and property_cancel_button() is not set.

Exceptions

  Gtk::DialogError |

## ◆ create() [1/2]

static Glib::RefPtr< AlertDialog > Gtk::AlertDialog::create | ( |  | ) |
| static

## ◆ create() [2/2]

static Glib::RefPtr< AlertDialog > Gtk::AlertDialog::create | ( | const Glib::ustring & | message | ) |
| static

Creates a new Gtk::AlertDialog with the given message.

Parameters

  message | The message.

## ◆ get_buttons()

std::vector< Glib::ustring > Gtk::AlertDialog::get_buttons | ( |  | ) | const

Returns the button labels for the alert.

Since gtkmm 4.10

Returns
  The button labels.

## ◆ get_cancel_button()

int Gtk::AlertDialog::get_cancel_button | ( |  | ) | const

Returns the index of the cancel button.

Since gtkmm 4.10

Returns
  The index of the cancel button, or -1.

## ◆ get_default_button()

int Gtk::AlertDialog::get_default_button | ( |  | ) | const

Returns the index of the default button.

Since gtkmm 4.10

Returns
  The index of the default button, or -1.

## ◆ get_detail()

Glib::ustring Gtk::AlertDialog::get_detail | ( |  | ) | const

Returns the detail text that will be shown in the alert.

Since gtkmm 4.10

Returns
  The detail text.

## ◆ get_message()

Glib::ustring Gtk::AlertDialog::get_message | ( |  | ) | const

Returns the message that will be shown in the alert.

Since gtkmm 4.10

Returns
  The message.

## ◆ get_modal()

bool Gtk::AlertDialog::get_modal | ( |  | ) | const

Returns whether the alert blocks interaction with the parent window while it is presented.

Since gtkmm 4.10

Returns
  True if the alert is modal.

## ◆ get_type()

static GType Gtk::AlertDialog::get_type | ( |  | ) |
| static

Get the GType for this class, for use with the underlying GObject type system.

## ◆ gobj() [1/2]

GtkAlertDialog * Gtk::AlertDialog::gobj | ( |  | ) |
| inline

Provides access to the underlying C GObject.

## ◆ gobj() [2/2]

const GtkAlertDialog * Gtk::AlertDialog::gobj | ( |  | ) | const
| inline

Provides access to the underlying C GObject.

## ◆ gobj_copy()

GtkAlertDialog * Gtk::AlertDialog::gobj_copy | ( |  | ) |

Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs.

## ◆ operator=()

AlertDialog & Gtk::AlertDialog::operator= | ( | AlertDialog && | src | ) |
| noexcept

## ◆ property_buttons() [1/2]

Glib::PropertyProxy< std::vector< Glib::ustring > > Gtk::AlertDialog::property_buttons | ( |  | ) |

Labels for buttons to show in the alert.

The labels should be translated and may contain a `_` character to indicate the mnemonic character.

If this property is not set, then a 'Close' button is automatically created.

Since gtkmm 4.10

Returns
  A PropertyProxy that allows you to get or set the value of the property, or receive notification when the value of the property changes.

## ◆ property_buttons() [2/2]

Glib::PropertyProxy_ReadOnly< std::vector< Glib::ustring > > Gtk::AlertDialog::property_buttons | ( |  | ) | const

Labels for buttons to show in the alert.

The labels should be translated and may contain a `_` character to indicate the mnemonic character.

If this property is not set, then a 'Close' button is automatically created.

Since gtkmm 4.10

Returns
  A PropertyProxy_ReadOnly that allows you to get the value of the property, or receive notification when the value of the property changes.

## ◆ property_cancel_button() [1/2]

Glib::PropertyProxy< int > Gtk::AlertDialog::property_cancel_button | ( |  | ) |

Determines what happens when the `Escape` key is pressed while the alert is shown.

If this property holds the index of a button in property_buttons(), then pressing Escape is treated as if that button was pressed. If it is -1 or not a valid index for the `buttons` array, then an error is returned.

If `buttons` is `nullptr`, then the automatically created 'Close' button is treated as both cancel and default button, so 0 is returned.

Since gtkmm 4.10

Default value: -1

Returns
  A PropertyProxy that allows you to get or set the value of the property, or receive notification when the value of the property changes.

## ◆ property_cancel_button() [2/2]

Glib::PropertyProxy_ReadOnly< int > Gtk::AlertDialog::property_cancel_button | ( |  | ) | const

Determines what happens when the `Escape` key is pressed while the alert is shown.

If this property holds the index of a button in property_buttons(), then pressing Escape is treated as if that button was pressed. If it is -1 or not a valid index for the `buttons` array, then an error is returned.

If `buttons` is `nullptr`, then the automatically created 'Close' button is treated as both cancel and default button, so 0 is returned.

Since gtkmm 4.10

Default value: -1

Returns
  A PropertyProxy_ReadOnly that allows you to get the value of the property, or receive notification when the value of the property changes.

## ◆ property_default_button() [1/2]

Glib::PropertyProxy< int > Gtk::AlertDialog::property_default_button | ( |  | ) |

Determines what happens when the `Return` key is pressed while the alert is shown.

If this property holds the index of a button in property_buttons(), then pressing Return is treated as if that button was pressed. If it is -1 or not a valid index for the `buttons` array, then nothing happens.

If `buttons` is `nullptr`, then the automatically created 'Close' button is treated as both cancel and default button, so 0 is returned.

Since gtkmm 4.10

Default value: -1

Returns
  A PropertyProxy that allows you to get or set the value of the property, or receive notification when the value of the property changes.

## ◆ property_default_button() [2/2]

Glib::PropertyProxy_ReadOnly< int > Gtk::AlertDialog::property_default_button | ( |  | ) | const

Determines what happens when the `Return` key is pressed while the alert is shown.

If this property holds the index of a button in property_buttons(), then pressing Return is treated as if that button was pressed. If it is -1 or not a valid index for the `buttons` array, then nothing happens.

If `buttons` is `nullptr`, then the automatically created 'Close' button is treated as both cancel and default button, so 0 is returned.

Since gtkmm 4.10

Default value: -1

Returns
  A PropertyProxy_ReadOnly that allows you to get the value of the property, or receive notification when the value of the property changes.

## ◆ property_detail() [1/2]

Glib::PropertyProxy< Glib::ustring > Gtk::AlertDialog::property_detail | ( |  | ) |

The detail text for the alert.

Since gtkmm 4.10

Default value: ""

Returns
  A PropertyProxy that allows you to get or set the value of the property, or receive notification when the value of the property changes.

## ◆ property_detail() [2/2]

Glib::PropertyProxy_ReadOnly< Glib::ustring > Gtk::AlertDialog::property_detail | ( |  | ) | const

The detail text for the alert.

Since gtkmm 4.10

Default value: ""

Returns
  A PropertyProxy_ReadOnly that allows you to get the value of the property, or receive notification when the value of the property changes.

## ◆ property_message() [1/2]

Glib::PropertyProxy< Glib::ustring > Gtk::AlertDialog::property_message | ( |  | ) |

The message for the alert.

Since gtkmm 4.10

Default value: ""

Returns
  A PropertyProxy that allows you to get or set the value of the property, or receive notification when the value of the property changes.

## ◆ property_message() [2/2]

Glib::PropertyProxy_ReadOnly< Glib::ustring > Gtk::AlertDialog::property_message | ( |  | ) | const

The message for the alert.

Since gtkmm 4.10

Default value: ""

Returns
  A PropertyProxy_ReadOnly that allows you to get the value of the property, or receive notification when the value of the property changes.

## ◆ property_modal() [1/2]

Glib::PropertyProxy< bool > Gtk::AlertDialog::property_modal | ( |  | ) |

Whether the alert is modal.

Since gtkmm 4.10

Default value: `true`

Returns
  A PropertyProxy that allows you to get or set the value of the property, or receive notification when the value of the property changes.

## ◆ property_modal() [2/2]

Glib::PropertyProxy_ReadOnly< bool > Gtk::AlertDialog::property_modal | ( |  | ) | const

Whether the alert is modal.

Since gtkmm 4.10

Default value: `true`

Returns
  A PropertyProxy_ReadOnly that allows you to get the value of the property, or receive notification when the value of the property changes.

## ◆ set_buttons()

void Gtk::AlertDialog::set_buttons | ( | const std::vector< Glib::ustring > & | labels | ) | const

Sets the button labels for the alert.

Since gtkmm 4.10

Parameters

  labels | The new button labels.

## ◆ set_cancel_button()

void Gtk::AlertDialog::set_cancel_button | ( | int | button | ) |

Sets the index of the cancel button.

See property_cancel_button() for details of how this value is used.

Since gtkmm 4.10

Parameters

  button | The new cancel button.

## ◆ set_default_button()

void Gtk::AlertDialog::set_default_button | ( | int | button | ) |

Sets the index of the default button.

See property_default_button() for details of how this value is used.

Since gtkmm 4.10

Parameters

  button | The new default button.

## ◆ set_detail()

void Gtk::AlertDialog::set_detail | ( | const Glib::ustring & | detail | ) |

Sets the detail text that will be shown in the alert.

Since gtkmm 4.10

Parameters

  detail | The new detail text.

## ◆ set_message()

void Gtk::AlertDialog::set_message | ( | const Glib::ustring & | message | ) |

Sets the message that will be shown in the alert.

Since gtkmm 4.10

Parameters

  message | The new message.

## ◆ set_modal()

void Gtk::AlertDialog::set_modal | ( | bool | modal = true | ) |

Sets whether the alert blocks interaction with the parent window while it is presented.

Since gtkmm 4.10

Parameters

  modal | The new value.

## ◆ show() [1/2]

void Gtk::AlertDialog::show | ( |  | ) |

A show() convenience overload.

## ◆ show() [2/2]

void Gtk::AlertDialog::show | ( | Window & | parent | ) |

Shows the alert to the user.

This function is a simpler version of choose() intended for dialogs with a single button.

If you want to cancel the dialog or if the alert has more than one button, you should use that function instead and provide it with a Gio::Cancellable and callback respectively.

Since gtkmm 4.10

Parameters

  parent | The parent window.

## Friends And Related Symbol Documentation

## ◆ wrap()

Glib::RefPtr< Gtk::AlertDialog > wrap | ( | GtkAlertDialog * | object,
|  | bool | take_copy = false )
| related

A Glib::wrap() method for this object.

Parameters

  object | The C instance.
  take_copy | False if the result should take ownership of the C instance. True if it should take a new copy or ref.

Returns
  A C++ instance that wraps this C instance.