Query the system for information about a given region
PhSysInfo_t * PhQuerySystemInfo( PhRid_t rid, PhRect_t const *rect, PhSysInfo_t *sysinfo );
This function queries the system for information for the region with the given rid:
The information is stored in the PhSysInfo_t structure pointed to by sysinfo. Photon reports information about itself and system regions that intersect the rectangular area specified by the PhRect_t structure pointed to by rect. If rect is NULL, the area is the extent of the given region.
A pointer to the PhSysInfo_t structure passed to the function, or NULL if an error occurred.
PhRect_t, PhSysInfo_t, PtQuerySystemInfo()
“System information” in the Regions chapter of the Photon Programmer's Guide.