VideoPortAssociateEventsWithDmaHandle function (video.h)
The VideoPortAssociateEventsWithDmaHandle function is obsolete in Windows 2000 and later.
VideoPortAssociateEventsWithDmaHandle associates an event, which is shared by the video display driver and the video miniport driver, with a DMA handle.
VIDEOPORT_DEPRECATED VIDEOPORT_API PDMA VideoPortAssociateEventsWithDmaHandle(
[in] IN PVOID HwDeviceExtension,
[in, out] IN OUT PVIDEO_REQUEST_PACKET pVrp,
[in] IN PVOID MappedUserEvent,
[in] IN PVOID DisplayDriverEvent
);
[in] HwDeviceExtension
Pointer to the miniport driver's device extension.
[in, out] pVrp
Pointer to a VIDEO_REQUEST_PACKET.
[in] MappedUserEvent
Is reserved for system use.
[in] DisplayDriverEvent
Is reserved for system use.
VideoPortAssociateEventsWithDmaHandle always returns NULL.
See Bus-Master DMA in Video Miniport Drivers for information about packet-based and common-buffer DMA transfers.
Requirement | Value |
---|---|
Minimum supported client | Available in Windows 2000 and later versions of the Windows operating systems. |
Target Platform | Desktop |
Header | video.h (include Video.h) |
Library | Videoprt.lib |
DLL | Videoprt.sys |