cairo_region_t* gdk_window_get_visible_region ( GdkWindow* window )
Computes the region of the
window that is potentially visible.
This does not necessarily take into account if the window is
obscured by other windows, but no area outside of this region
A #cairo_region_t. This must be freed with
when you are done.
|The caller of the method takes ownership of the data, and is responsible for freeing it.|