Returns the number of the monitor in which the largest area of the bounding rectangle of @window resides.
a #GdkWindow
the monitor number in which most of @window is located, or if @window does not intersect any monitors, a monitor, close to @window.
Deprecated: Use gdk_display_get_monitor_at_window() instead
2.2
See Implementation
Returns the number of the monitor in which the largest area of the bounding rectangle of @window resides.