LabelSignalName

Gets emitted when the user activates a link in the label.

The activate-current-link is a keybinding signal.

Applications may also emit the signal with g_signal_emit_by_name() if they need to control activation of URIs programmatically.

The default bindings for this signal are all forms of the Enter key.

Gets emitted to activate a URI.

Applications may connect to it to override the default behaviour, which is to call gtk_show_uri().

Gets emitted to copy the slection to the clipboard.

The copy-clipboard signal is a keybinding signal.

The default binding for this signal is Ctrl-c.

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.

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.

Gets emitted when the user initiates a cursor movement.

The move-cursor signal is a keybinding signal. If the cursor is not visible in entry, this signal causes the viewport to be moved instead.

Applications should not connect to it, but may emit it with g_signal_emit_by_name() if they need to control the cursor programmatically.

The default bindings for this signal come in two variants, the variant with the Shift modifier extends the selection, the variant without the Shift modifier does not. There are too many key combinations to list them all here.

• Arrow keys move by individual characters/lines
• Ctrl-arrow key combinations move by words/paragraphs
• Home/End keys move to the ends of the buffer

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).

Emitted when widget is shown.

Emitted when the widget state changes.

See [methodGtk.Widget.get_state_flags].

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).

A list of style attributes to apply to the text of the label.

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.

The preferred place to ellipsize the string, if the label does not have enough room to display the entire string.

Note that setting this property to a value other than PANGO_ELLIPSIZE_NONE has the side-effect that the label requests only enough space to display the ellipsis “…”. In particular, this means that ellipsizing labels do not work well in notebook tabs, unless the [propertyGtk.NotebookPage:tab-expand] child property is set to true. Other ways to set a label’s width are [methodGtk.Widget.set_size_request] and [methodGtk.Label.set_width_chars].

A menu model whose contents will be appended to the context menu.

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.

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.

The alignment of the lines in the text of the label, relative to each other.

This does not affect the alignment of the label within its allocation. See [propertyGtk.Label:xalign] for that.

The contents of the label.

If the string contains Pango markup (see [funcPango.parse_markup]), you will have to set the [propertyGtk.Label:use-markup] property to true in order for the label to display the markup attributes. See also [methodGtk.Label.set_markup] for a convenience function that sets both this property and the [propertyGtk.Label:use-markup] property at the same time.

If the string contains underlines acting as mnemonics, you will have to set the [propertyGtk.Label:use-underline] property to true in order for the label to display them.

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.

The number of lines to which an ellipsized, wrapping label should be limited.

This property has no effect if the label is not wrapping or ellipsized. Set this property to -1 if you don’t want to limit the number of lines.

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.

The desired maximum width of the label, in characters.

If this property is set to -1, the width will be calculated automatically.

See the section on text layout for details of how [propertyGtk.Label:width-chars] and [propertyGtk.Label:max-width-chars] determine the width of ellipsized and wrapped labels.

The mnemonic accelerator key for the label.

The widget to be activated when the labels mnemonic key is pressed.

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.

The GtkRoot widget of the widget tree containing this widget.

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

The scale factor of the widget.

Whether the label text can be selected with the mouse.

Whether the widget responds to input.

Whether the label is in single line mode.

In single line mode, the height of the label does not depend on the actual text, it is always set to ascent + descent of the font. This can be an advantage in situations where resizing the label because of text changes would be distracting, e.g. in a statusbar.

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.

true if the text of the label includes Pango markup.

See [funcPango.parse_markup].

true if the text of the label indicates a mnemonic with _.

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.

The desired width of the label, in characters.

If this property is set to -1, the width will be calculated automatically.

See the section on text layout for details of how [propertyGtk.Label:width-chars] and [propertyGtk.Label:max-width-chars] determine the width of ellipsized and wrapped labels.

Override for width request of the widget.

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

true if the label text will wrap if it gets too wide.

Controls how the line wrapping is done.

This only affects the formatting if line wrapping is on (see the [propertyGtk.Label:wrap] property). The default is PANGO_WRAP_WORD, which means wrap on word boundaries.

The horizontal alignment of the label text inside its size allocation.

Compare this to [propertyGtk.Widget:halign], which determines how the labels size allocation is positioned in the space available for the label.

The vertical alignment of the label text inside its size allocation.

Compare this to [propertyGtk.Widget:valign], which determines how the labels size allocation is positioned in the space available for the label.