Simulation support:

This function is mandatory for display drivers. For other drivers, it is simulated by a handling routine in the graphics engine.

Description:

GreDeath informs the presentation driver that the entire screen is required by another screen group (an application that is not running under the Presentation Manager interface).

#define INCL_GRE_DEVMISC3
#include <os2.h>

HDC      hdc;        /*  The device context handle. */
PVOID    pInstance;  /*  A pointer to instance data. */
ULONG    lFunction;  /*  High-order WORD=flags; low-order WORD=NGreDeath. */
BOOL     fSuccess;   /*  Return codes. */

fSuccess = GreDeath(hdc, pInstance, lFunction);