Description:

OS2_PM_DRV_ENABLE: DisableDeviceContext is called when a device context is about to be deleted. In response, the presentation driver must release any memory and other resources that it has allocated for the DC.

#include <os2.h>

ULONG     ulSubfunction;  /*  06H. */
PULONG    pParam1;
PLONG     pParam2;        /*  Not used. */
LONG      rc;             /*  Return codes. */

rc = DisableDeviceContext(ulSubfunction, pParam1,
       pParam2);