GdkWindow* gdk_window_get_toplevel ( GdkWindow* window )
Gets the toplevel window that’s an ancestor of
Any window type but
GDK_WINDOW_CHILD is considered a
toplevel window, as is a
GDK_WINDOW_CHILD window that
has a root window as parent.
Note that you should use
you want to get to a window’s toplevel as seen on screen, because
gdk_window_get_toplevel() will most likely not do what you expect
if there are offscreen windows in the hierarchy.
The toplevel window containing
|The data is owned by the instance.|