return location for x coordinate of the pointer location relative to the window origin, or %NULL
return location for y coordinate of the pointer location relative & to the window origin, or %NULL
the window under the mouse pointer, or %NULL
Deprecated: Use gdk_device_get_window_at_position() instead.
2.2
Obtains the window underneath the mouse pointer, returning the location of the pointer in that window in @win_x, @win_y for @screen. Returns %NULL if the window under the mouse pointer is not known to GDK (for example, belongs to another application).