- parent-class
- The object class structure needs to be the first
element in the widget class structure in order for the class mechanism to work correctly.
- show
- Signal emitted when the widget is shown.
- hide
- Signal emitted when the widget is hidden.
- map
- Signal emitted when the widget is going to be mapped, that is
when the widget is visible, which is controlled with the gtk:widget-visible function and all its parents up to the toplevel widget are also visible.
- unmap
- Signal emitted when the 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.
- realize
- Signal emitted when the widget is associated with a gdk:surface object, which means that the gtk:widget-realize function has been called or the widget has been mapped, that is, it is going to be drawn.
- unrealize
- Signal emitted when the gdk:surface object
associated with the widget is destroyed, which means that the gtk:widget-unrealize function has been called or the widget has been unmapped, that is, it is going to be hidden.
- root
- Called when the widget gets added to a gtk:root widget. Must chain up.
- unroot
- Called when the widget is about to be removed from its gtk:root widget. Must chain up.
- size-allocate
- Called to set the allocation, if the widget does not have a layout manager.
- state-flags-changed
- Signal emitted when the widget state changes, see the gtk:widget-state-flags function.
- direction-changed
- Signal emitted when the text direction of a widget changes.
- get-request-mode
- Called to get the request mode, if the widget
does not have a layout manager. This allows a widget to tell its parent
container whether it prefers to be allocated in :height-for-width or :width-for-height mode. The :height-for-width value means the widget prefers to have GtkWidgetClass.measure() called first to get the default width (passing a for-size of -1), then again to get the
height for said default width. The :constant-size value disables any
height-for-width or width-for-height geometry management for said widget
and is the default return. It is important to note that any widget which
trades height-for-width or width-for-height must respond properly to a for-size value >= -1 passed to GtkWidgetClass.measure, for both possible orientations.
- measure
- Called to obtain the minimum and natural size of the
widget, if the widget does not have a layout manager. Depending on the orientation parameter, the passed for-size can be interpreted as
width or height. A widget will never be allocated less than its minimum size.
- mnemonic-activate
- Activates the widget if cycling is false, and just grabs the focus if cycling is true.
- grab-focus
- Causes the widget to have the keyboard focus for the GtkWindow it is inside.
- focus
- Virtual function for the gtk:widget-child-focus function.
- set-focus-child
- Sets the focused child of the widget. Must chain up.
- move-focus
- Signal emitted when a change of focus is requested.
- keynav-failed
- Signal emitted if keyboard navigation fails.
- query-tooltip
- Signal emitted when the 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.
- compute-expand
- Computes whether a container should give the widget extra space when possible.
- css-changed
- Called when the CSS used by the widget was changed.
Widgets should then discard their caches that depend on CSS and queue
resizes or redraws accordingly. The default implementation will take
care of this for all the default CSS properties, so implementations must chain up.
- system-setting-changed
- Emitted when a system setting was changed. Must chain up.
- snapshot
- Called when a new snapshot of the widget has to be taken.
- contains
- Virtual function for the gtk:widget-contains function.