BOOL GetUserObjectInformation(
  HANDLE hObj,            // handle to object
  int nIndex,             // type of information to retrieve
  PVOID pvInfo,           // information buffer
  DWORD nLength,          // size of the buffer
  LPDWORD lpnLengthNeeded // receives required buffer size
);
 

 
DECLARE INTEGER GetUserObjectInformation IN user32;
    INTEGER   hObj,;
    INTEGER   nIndex,;
    STRING  @ pvInfo,;
    INTEGER   nLength,;
    INTEGER @ lpnLengthNeeded