This method is specific to version 3 of the OS/2 operating system.
This instance method returns the screen group ID of the running application for a given object.
#define INCL_WINWORKPLACE #include <os2.h> WPObject *somSelf; /* Pointer to the object on which the method is being invoked. */ USHORT usPrevSgId; /* Previous screen group ID. */ USHORT usScreenId; /* Screen group ID. */ usScreenId = _wpQueryScreenGroupID(somSelf, usPrevSgId);