No description available.
The ::button-press-event signal will be emitted when a button
(typically from a mouse) is pressed.
The ::button-release-event signal will be emitted when a button
(typically from a mouse) is released.
Determines whether an accelerator that activates the signal
identified by signal_id can currently be activated.
This signal is present to allow applications and derived
widgets to override the default GtkWidget handling
for determining whether an accelerator can be activated.
The ::child-notify signal is emitted for each
[child property][child-properties] that has
changed on an object. The signal’s detail holds the property name.
The ::composited-changed signal is emitted when the composited
status of widgets screen changes.
See gdk_screen_is_composited().
The ::configure-event signal will be emitted when the size, position or
stacking of the widget‘s window has changed.
Emitted when a redirected window belonging to widget gets drawn into.
The region/area members of the event shows what area of the redirected
drawable was drawn into.
The ::delete-event signal is emitted if a user requests that
a toplevel window is closed. The default handler for this signal
destroys the window. Connecting gtk_widget_hide_on_delete() to
this signal will cause the window to be hidden instead, so that
it can later be shown again without reconstructing it.
Signals that all holders of a reference to the widget should release
the reference that they hold. May result in finalization of the widget
if all references are released.
The ::destroy-event signal is emitted when a GdkWindow is destroyed.
You rarely get this signal, because most widgets disconnect themselves
from their window before they destroy it, so no widget owns the
window at destroy time.
The ::direction-changed signal is emitted when the text direction
of a widget changes.
The ::drag-begin signal is emitted on the drag source when a drag is
started. A typical reason to connect to this signal is to set up a
custom drag icon with e.g. gtk_drag_source_set_icon_pixbuf().
The ::drag-data-delete signal is emitted on the drag source when a drag
with the action GDK_ACTION_MOVE is successfully completed. The signal
handler is responsible for deleting the data that has been dropped. What
“delete” means depends on the context of the drag operation.
The ::drag-data-get signal is emitted on the drag source when the drop
site requests the data which is dragged. It is the responsibility of
the signal handler to fill data with the data in the format which
is indicated by info. See gtk_selection_data_set() and gtk_selection_data_set_text().
The ::drag-data-received signal is emitted on the drop site when the
dragged data has been received. If the data was received in order to
determine whether the drop will be accepted, the handler is expected
to call gdk_drag_status() and not finish the drag.
If the data was received in response to a GtkWidget::drag-drop signal
(and this is the last target to be received), the handler for this
signal is expected to process the received data and then call
gtk_drag_finish(), setting the success parameter depending on
whether the data was processed successfully.
The ::drag-drop signal is emitted on the drop site when the user drops
the data onto the widget. The signal handler must determine whether
the cursor position is in a drop zone or not. If it is not in a drop
zone, it returns FALSE and no further processing is necessary.
Otherwise, the handler returns TRUE. In this case, the handler must
ensure that gtk_drag_finish() is called to let the source know that
the drop is done. The call to gtk_drag_finish() can be done either
directly or in a GtkWidget::drag-data-received handler which gets
triggered by calling gtk_drag_get_data() to receive the data for one
or more of the supported targets.
The ::drag-end signal is emitted on the drag source when a drag is
finished. A typical reason to connect to this signal is to undo
things done in GtkWidget::drag-begin.
The ::drag-failed signal is emitted on the drag source when a drag has
failed. The signal handler may hook custom code to handle a failed DnD
operation based on the type of error, it returns TRUE is the failure has
been already handled (not showing the default “drag operation failed”
animation), otherwise it returns FALSE.
The ::drag-leave signal is emitted on the drop site when the cursor
leaves the widget. A typical reason to connect to this signal is to
undo things done in GtkWidget::drag-motion, e.g. undo highlighting
with gtk_drag_unhighlight().
The ::drag-motion signal is emitted on the drop site when the user
moves the cursor over the widget during a drag. The signal handler
must determine whether the cursor position is in a drop zone or not.
If it is not in a drop zone, it returns FALSE and no further processing
is necessary. Otherwise, the handler returns TRUE. In this case, the
handler is responsible for providing the necessary information for
displaying feedback to the user, by calling gdk_drag_status().
This signal is emitted when a widget is supposed to render itself.
The widget‘s top left corner must be painted at the origin of
the passed in context and be sized to the values returned by
gtk_widget_get_allocated_width() and gtk_widget_get_allocated_height().
The ::enter-notify-event will be emitted when the pointer enters
the widget‘s window.
The GTK+ main loop will emit three signals for each GDK event delivered
to a widget: one generic ::event signal, another, more specific,
signal that matches the type of event delivered (e.g.
GtkWidget::key-press-event) and finally a generic
GtkWidget::event-after signal.
After the emission of the GtkWidget::event signal and (optionally)
the second more specific signal, ::event-after will be emitted
regardless of the previous two signals handlers return values.
No description available.
The ::focus-in-event signal will be emitted when the keyboard focus
enters the widget‘s window.
The ::focus-out-event signal will be emitted when the keyboard focus
leaves the widget‘s window.
Emitted when a pointer or keyboard grab on a window belonging
to widget gets broken.
No description available.
The ::grab-notify signal is emitted when a widget becomes
shadowed by a GTK+ grab (not a pointer or keyboard grab) on
another widget, or when it becomes unshadowed due to a grab
being removed.
The ::hide signal is emitted when widget is hidden, for example with gtk_widget_hide().
The ::hierarchy-changed signal is emitted when the
anchored state of a widget changes. A widget is
“anchored” when its toplevel
ancestor is a GtkWindow. This signal is emitted when
a widget changes from un-anchored to anchored or vice-versa.
The ::key-press-event signal is emitted when a key is pressed. The signal
emission will reoccur at the key-repeat rate when the key is kept pressed.
The ::key-release-event signal is emitted when a key is released.
Gets emitted if keyboard navigation fails.
See gtk_widget_keynav_failed() for details.
The ::leave-notify-event will be emitted when the pointer leaves
the widget‘s window.
The ::map signal is emitted when widget is going to be mapped, that is
when the widget is visible (which is controlled with
gtk_widget_set_visible()) and all its parents up to the toplevel widget
are also visible. Once the map has occurred, GtkWidget::map-event will
be emitted.
The ::map-event signal will be emitted when the widget‘s window is
mapped. A window is mapped when it becomes visible on the screen.
The default handler for this signal activates widget if group_cycling
is FALSE, or just makes widget grab focus if group_cycling is TRUE.
The ::motion-notify-event signal is emitted when the pointer moves
over the widget’s GdkWindow.
No description available.
The ::parent-set signal is emitted when a new parent
has been set on a widget.
This signal gets emitted whenever a widget should pop up a context
menu. This usually happens through the standard key binding mechanism;
by pressing a certain key while a widget is focused, the user can cause
the widget to pop up a menu. For example, the GtkEntry widget creates
a menu with clipboard commands. See the
[Popup Menu Migration Checklist][checklist-popup-menu]
for an example of how to use this signal.
The ::property-notify-event signal will be emitted when a property on
the widget‘s window has been changed or deleted.
To receive this signal the GdkWindow associated to the widget needs
to enable the #GDK_PROXIMITY_IN_MASK mask.
To receive this signal the GdkWindow associated to the widget needs
to enable the #GDK_PROXIMITY_OUT_MASK mask.
Emitted when GtkWidget:has-tooltip is TRUE and the hover timeout
has expired with the cursor hovering “above” widget; or emitted when widget got
focus in keyboard mode.
The ::realize signal is emitted when widget is associated with a
GdkWindow, which means that gtk_widget_realize() has been called or the
widget has been mapped (that is, it is going to be drawn).
The ::screen-changed signal gets emitted when the
screen of a widget has changed.
The ::scroll-event signal is emitted when a button in the 4 to 7
range is pressed. Wheel mice are usually configured to generate
button press events for buttons 4 and 5 when the wheel is turned.
The ::selection-clear-event signal will be emitted when the
the widget‘s window has lost ownership of a selection.
No description available.
No description available.
No description available.
The ::selection-request-event signal will be emitted when
another client requests ownership of the selection owned by
the widget‘s window.
The ::show signal is emitted when widget is shown, for example with gtk_widget_show().
No description available.
No description available.
The ::state-changed signal is emitted when the widget state changes.
See gtk_widget_get_state().
The ::state-flags-changed signal is emitted when the widget state
changes, see gtk_widget_get_state_flags().
The ::style-set signal is emitted when a new style has been set
on a widget. Note that style-modifying functions like
gtk_widget_modify_base() also cause this signal to be emitted.
The ::style-updated signal is a convenience signal that is emitted when the
GtkStyleContext::changed signal is emitted on the widget‘s associated
GtkStyleContext as returned by gtk_widget_get_style_context().
No description available.
The ::unmap signal is emitted when widget is going to be unmapped, which
means that either it or any of its parents up to the toplevel widget have
been set as hidden.
The ::unmap-event signal will be emitted when the widget‘s window is
unmapped. A window is unmapped when it becomes invisible on the screen.
The ::unrealize signal is emitted when the GdkWindow associated with
widget is destroyed, which means that gtk_widget_unrealize() has been
called or the widget has been unmapped (that is, it is going to be hidden).
The ::visibility-notify-event will be emitted when the widget‘s
window is obscured or unobscured.
The ::window-state-event will be emitted when the state of the
toplevel window associated to the widget changes.
