Sets a widget's window. This function should only be used in a
widget's 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 GdkWindow
by calling gtk_widget_set_has_window(). This is usually done in the
widget's init() function.
Since 2.18
Sets a widget's window. This function should only be used in a widget's 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 GdkWindow by calling gtk_widget_set_has_window(). This is usually done in the widget's init() function. Since 2.18