Description:
OS2_PM_DRV_ENABLE: BeginCloseDC is called to inform the presentation driver that the device context is being closed.
#include <os2.h> ULONG ulSubfunction; /* 0Bh. */ HDC hdcParam1; PLONG pParam2; /* A pointer (pInstance) to the DC instance data. */ LONG rc; /* Return codes. */ rc = BeginCloseDC(ulSubfunction, hdcParam1, pParam2);