Description:
OS2_PM_DRV_ENABLE: InstallPMEngineDisplayHooks provides the addresses of the graphics engine and display driver dispatch tables so that the dynamic link libraries for display hooks can intercept the dispatching of these functions for monitoring or other purposes.
#include <os2.h> ULONG ulSubfunction; /* 0Ch. */ PLONG pParam1; PLONG pParam2; LONG rc; /* Return codes. */ rc = InstallPMEngineDisplayHooks(ulSubfunction, pParam1, pParam2);