Description:
OS2_PM_DRV_ENABLE: CompleteOpenDC is called upon completion of the DevOpenDC process to tell the presentation driver that the device context now has access to the graphics engine.
#include <os2.h> ULONG ulSubfunction; /* 0AH. */ HDC hdcParam1; PLONG pParam2; /* A pointer (pInstance) to the DC instance data. */ LONG rc; /* Return codes. */ rc = CompleteOpenDC(ulSubfunction, hdcParam1, pParam2);