This function returns the topmost widget in the container hierarchy
@widget is a part of. If @widget has no parent widgets, it will be
returned as the topmost widget. No reference will be added to the
returned widget; it should not be unreferenced.
Note the difference in behavior vs. gtk_widget_get_ancestor();
gtk_widget_get_ancestor (widget, GTK_TYPE_WINDOW)
would return
%NULL if @widget wasn’t inside a toplevel window, and if the
window was inside a #GtkWindow-derived widget which was in turn
inside the toplevel #GtkWindow. While the second case may
seem unlikely, it actually happens when a #GtkPlug is embedded
inside a #GtkSocket within the same application.
To reliably find the toplevel #GtkWindow, use
gtk_widget_get_toplevel() and call GTK_IS_WINDOW()
on the result. For instance, to get the title of a widget's toplevel
window, one might use:
|[<!-- language="C" -->
static const char *
get_widget_toplevel_title (GtkWidget *widget)
{
GtkWidget *toplevel = gtk_widget_get_toplevel (widget);
if (GTK_IS_WINDOW (toplevel))
{
return gtk_window_get_title (GTK_WINDOW (toplevel));
}
This function returns the topmost widget in the container hierarchy @widget is a part of. If @widget has no parent widgets, it will be returned as the topmost widget. No reference will be added to the returned widget; it should not be unreferenced.
Note the difference in behavior vs. gtk_widget_get_ancestor(); gtk_widget_get_ancestor (widget, GTK_TYPE_WINDOW) would return %NULL if @widget wasn’t inside a toplevel window, and if the window was inside a #GtkWindow-derived widget which was in turn inside the toplevel #GtkWindow. While the second case may seem unlikely, it actually happens when a #GtkPlug is embedded inside a #GtkSocket within the same application.
To reliably find the toplevel #GtkWindow, use gtk_widget_get_toplevel() and call GTK_IS_WINDOW() on the result. For instance, to get the title of a widget's toplevel window, one might use: |[<!-- language="C" --> static const char * get_widget_toplevel_title (GtkWidget *widget) { GtkWidget *toplevel = gtk_widget_get_toplevel (widget); if (GTK_IS_WINDOW (toplevel)) { return gtk_window_get_title (GTK_WINDOW (toplevel)); }
return NULL; } ]|