void gtk_widget_register_window ( GtkWidget* widget, GdkWindow* window )
GdkWindow with the widget and sets it up so that
the widget receives events for it. Call
when destroying the window.
Before 3.8 you needed to call
gdk_window_set_user_data() directly to set
this up. This is now deprecated and you should use
instead. Old code will keep working as is, although some new features like
transparency might not work perfectly.
|The data is owned by the caller of the function.|