XPLMGetAvionicsGeometry
XPLM_API void XPLMGetAvionicsGeometry(
XPLMAvionicsID inHandle,
int * outLeft, /* Can be NULL */
int * outTop, /* Can be NULL */
int * outRight, /* Can be NULL */
int * outBottom); /* Can be NULL */
Returns the bounds of a cockpit device’s popup window in the X-Plane coordinate system.