Emitted when a color is activated from the color chooser.
Adds a palette to the color chooser.
Get the main Gtk struct
Gets the currently-selected color.
Returns whether the color chooser shows the alpha channel.
Sets the color.
Sets whether or not the color chooser should use the alpha channel.
GtkColorChooser is an interface that is implemented by widgets for choosing colors.
Depending on the situation, colors may be allowed to have alpha (translucency).
In GTK, the main widgets that implement this interface are [class@Gtk.ColorChooserWidget], [class@Gtk.ColorChooserDialog] and [class@Gtk.ColorButton].