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);