void gtk_widget_set_window ( GtkWidget* widget, GdkWindow* window )
Sets a widget’s window. This function should only be used in a
GtkWidget::realize implementation. The %window passed is
usually either new window created with gdk_window_new(), or the
window of its parent widget as returned by gtk_widget_get_parent_window().
Widgets must indicate whether they will create their own
by calling gtk_widget_set_has_window(). This is usually done in the
Note that this function does not add any reference to
Available since: 2.18
The instance takes ownership of the data, and is responsible for freeing it.