VideoPortReadStateEvent function (video.h)
The VideoPortReadStateEvent function returns the current state of a given event object: signaled or nonsignaled.
Syntax
VIDEOPORT_API LONG VideoPortReadStateEvent(
[in] IN PVOID HwDeviceExtension,
[in] IN PEVENT pEvent
);
Parameters
[in] HwDeviceExtension
Pointer to the miniport driver's device extension.
[in] pEvent
Pointer to the event object whose state is to be read.
Return value
VideoPortReadStateEvent returns a nonzero value if the event object is currently in the signaled state. If the event object is in the nonsignaled state, this function returns zero.
Remarks
This function is available in Windows XP and later.
Requirements
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 |
IRQL | <= DISPATCH_LEVEL |