Notifies the mouse device driver that the area defined by the passed parameters is for the exclusive use of the application. This area is defined as the collision area and is not available to the mouse device driver when drawing pointer images.

#define INCL_MOU
#include <os2.h>

PNOPTRRECT    PtrArea;       /*  Pointer shape collision area. */
HMOU          DeviceHandle;  /*  Reserved.  Must be 0. */
APIRET        rc;            /*  Return code. */

rc = MouRemovePtr(PtrArea, DeviceHandle);