XPLMGetWindowGeometry
From X-Plane SDK
XPLMGetWindowGeometry
XPLM_API void XPLMGetWindowGeometry(
XPLMWindowID inWindowID,
int * outLeft, /* Can be NULL */
int * outTop, /* Can be NULL */
int * outRight, /* Can be NULL */
int * outBottom); /* Can be NULL */
This routine returns the position and size of a window in cockpit pixels. Pass NULL to not receive any paramter.
X-Plane SDK