TreeViewSignalName

The number of columns of the treeview has changed.

The position of the cursor (focused cell) has changed.

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.

This signal is not suitable for saving widget state.

Emitted when the text direction of a widget changes.

Undocumented

Emitted when widget is hidden.

Emitted if keyboard navigation fails.

See [methodGtk.Widget.keynav_failed] for details.

Emitted when widget is going to be mapped.

A widget is mapped when the widget is visible (which is controlled with [propertyGtk.Widget:visible]) and all its parents up to the toplevel widget are also visible.

The map signal can be used to determine whether a widget will be drawn, for instance it can resume an animation that was stopped during the emission of [signalGtk.Widget::unmap].

Emitted when a widget is activated via a mnemonic.

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 GtkTreeViewmove-cursor signal is a keybinding signal which gets emitted when the user presses one of the cursor keys.

Applications should not connect to it, but may emit it with g_signal_emit_by_name() if they need to control the cursor programmatically. In contrast to gtk_tree_view_set_cursor() and gtk_tree_view_set_cursor_on_cell() when moving horizontally GtkTreeViewmove-cursor does not reset the current selection.

Emitted when the focus is moved.

The notify signal is emitted on an object when one of its properties has its value set through g_object_set_property(), g_object_set(), et al.

Note that getting this signal doesn’t itself guarantee that the value of the property has actually changed. When it is emitted is determined by the derived GObject class. If the implementor did not create the property with G_PARAM_EXPLICIT_NOTIFY, then any call to g_object_set_property() results in notify being emitted, even if the new value is the same as the old. If they did pass G_PARAM_EXPLICIT_NOTIFY, then this signal is emitted only when they explicitly call g_object_notify() or g_object_notify_by_pspec(), and common practice is to do that only when the value has actually changed.

This signal is typically used to obtain change notification for a single property, by specifying the property name as a detail in the g_signal_connect() call, like this:

(C Language Example):

g_signal_connect (text_view->buffer, "notify::paste-target-list",
                  G_CALLBACK (gtk_text_view_target_list_notify),
                  text_view)

It is important to note that you must use canonical parameter names as detail strings for the notify signal.

Emitted when the widgets tooltip is about to be shown.

This happens when the [propertyGtk.Widget:has-tooltip] property is true and the hover timeout has expired with the cursor hovering “above” widget; or emitted when widget got focus in keyboard mode.

Using the given coordinates, the signal handler should determine whether a tooltip should be shown for widget. If this is the case true should be returned, false otherwise. Note that if keyboard_mode is true, the values of x and y are undefined and should not be used.

The signal handler is free to manipulate tooltip with the therefore destined function calls.

Emitted when widget is associated with a GdkSurface.

This means that [methodGtk.Widget.realize] has been called or the widget has been mapped (that is, it is going to be drawn).

The “row-activated” signal is emitted when the method gtk_tree_view_row_activated() is called.

This signal is emitted when the user double-clicks a treeview row with the [propertyGtk.TreeView:activate-on-single-click] property set to false, or when the user single-clicks a row when that property set to true.

This signal is also emitted when a non-editable row is selected and one of the keys: <kbd>Space</kbd>, <kbd>Shift</kbd>+<kbd>Space</kbd>, <kbd>Return</kbd> or <kbd>Enter</kbd> is pressed.

For selection handling refer to the tree widget conceptual overview as well as GtkTreeSelection.

The given row has been collapsed (child nodes are hidden).

The given row has been expanded (child nodes are shown).

Undocumented

Undocumented

Undocumented

Emitted when widget is shown.

Undocumented

Emitted when the widget state changes.

See [methodGtk.Widget.get_state_flags].

The given row is about to be collapsed (hide its children nodes). Use this signal if you need to control the collapsibility of individual rows.

The given row is about to be expanded (show its children nodes). Use this signal if you need to control the expandability of individual rows.

Undocumented

Emitted when widget is going to be unmapped.

A widget is unmapped when either it or any of its parents up to the toplevel widget have been set as hidden.

As unmap indicates that a widget will not be shown any longer, it can be used to, for example, stop an animation on the widget.

Emitted when the GdkSurface associated with widget is destroyed.

This means that [methodGtk.Widget.unrealize] has been called or the widget has been unmapped (that is, it is going to be hidden).

Undocumented

The activate-on-single-click property specifies whether the “row-activated” signal will be emitted after a single click.

Whether the widget or any of its descendents can accept the input focus.

This property is meant to be set by widget implementations, typically in their instance init function.

Whether the widget can receive pointer events.

A list of css classes applied to this widget.

The name of this widget in the CSS tree.

This property is meant to be set by widget implementations, typically in their instance init function.

The cursor used by widget.

Undocumented

Undocumented

Undocumented

Undocumented

Setting the fixed-height-mode property to true speeds up GtkTreeView by assuming that all rows have the same height. Only enable this option if all rows are the same height. Please see gtk_tree_view_set_fixed_height_mode() for more information on this option.

Whether the widget should grab focus when it is clicked with the mouse.

This property is only relevant for widgets that can take focus.

Whether this widget itself will accept the input focus.

How to distribute horizontal space if widget gets extra space.

Whether the widget is the default widget.

Whether the widget has the input focus.

Enables or disables the emission of the query-tooltip signal on widget.

A value of true indicates that widget can have a tooltip, in this case the widget will be queried using [signalGtk.Widget::query-tooltip] to determine whether it will provide a tooltip or not.

Undocumented

Undocumented

Override for height request of the widget.

If this is -1, the natural request will be used.

Whether to expand horizontally.

Whether to use the hexpand property.

Enables or disables the hover expansion mode of tree_view. Hover expansion makes rows expand or collapse if the pointer moves over them.

This mode is primarily intended for treeviews in popups, e.g. in GtkComboBox or GtkEntryCompletion.

Enables or disables the hover selection mode of tree_view. Hover selection makes the selected row follow the pointer. Currently, this works only for the selection modes GTK_SELECTION_SINGLE and GTK_SELECTION_BROWSE.

This mode is primarily intended for treeviews in popups, e.g. in GtkComboBox or GtkEntryCompletion.

The GtkLayoutManager instance to use to compute the preferred size of the widget, and allocate its children.

This property is meant to be set by widget implementations, typically in their instance init function.

Extra indentation for each level.

Margin on bottom side of widget.

This property adds margin outside of the widget’s normal size request, the margin will be added in addition to the size from [methodGtk.Widget.set_size_request] for example.

Margin on end of widget, horizontally.

This property supports left-to-right and right-to-left text directions.

This property adds margin outside of the widget’s normal size request, the margin will be added in addition to the size from [methodGtk.Widget.set_size_request] for example.

Margin on start of widget, horizontally.

This property supports left-to-right and right-to-left text directions.

This property adds margin outside of the widget’s normal size request, the margin will be added in addition to the size from [methodGtk.Widget.set_size_request] for example.

Margin on top side of widget.

This property adds margin outside of the widget’s normal size request, the margin will be added in addition to the size from [methodGtk.Widget.set_size_request] for example.

Undocumented

The name of the widget.

The requested opacity of the widget.

How content outside the widget’s content area is treated.

This property is meant to be set by widget implementations, typically in their instance init function.

The parent widget of this widget.

Whether the widget will receive the default action when it is focused.

Undocumented

The GtkRoot widget of the widget tree containing this widget.

This will be nil if the widget is not contained in a root widget.

Undocumented

The scale factor of the widget.

Undocumented

Whether the widget responds to input.

true if the view has expanders.

Undocumented

Sets the text of tooltip to be the given string, which is marked up with Pango markup.

Also see [methodGtk.Tooltip.set_markup].

This is a convenience property which will take care of getting the tooltip shown if the given string is not nil: [propertyGtk.Widget:has-tooltip] will automatically be set to true and there will be taken care of [signalGtk.Widget::query-tooltip] in the default signal handler.

Note that if both [propertyGtk.Widget:tooltip-text] and [propertyGtk.Widget:tooltip-markup] are set, the last one wins.

Sets the text of tooltip to be the given string.

Also see [methodGtk.Tooltip.set_text].

This is a convenience property which will take care of getting the tooltip shown if the given string is not nil: [propertyGtk.Widget:has-tooltip] will automatically be set to true and there will be taken care of [signalGtk.Widget::query-tooltip] in the default signal handler.

Note that if both [propertyGtk.Widget:tooltip-text] and [propertyGtk.Widget:tooltip-markup] are set, the last one wins.

How to distribute vertical space if widget gets extra space.

Whether to expand vertically.

Whether to use the vexpand property.

Whether the widget is visible.

Override for width request of the widget.

If this is -1, the natural request will be used.