DWORD (APIENTRY *PDD_WAITFORVERTICALBLANK)(
PDD_WAITFORVERTICALBLANKDATA lpWaitForVerticalBlank
);
WaitForVerticalBlank returns the vertical blank status of the device.
Parameters
lpWaitForVerticalBlank
Pointer to a DD_WAITFORVERTICALBLANKDATA structure that contains the information required to perform the vertical blank status.
Return Value
WaitForVerticalBlank returns a DDHAL_DRIVER_Xxx callback code that indicates how the driver handled the call. These return codes are defined in ddrawint.h.