get_frame_region

Retrieves the region that is currently being repainted.

After a call to [method@Gdk.DrawContext.begin_frame] this function will return a union of the region passed to that function and the area of the surface that the this determined needs to be repainted.

If this is not in between calls to [method@Gdk.DrawContext.begin_frame] and [method@Gdk.DrawContext.end_frame ], null will be returned.

Parameters:

this	a `GdkDrawContext`

Returns:

a Cairo region