VideoPortEnableInterrupt function (video.h)
The VideoPortEnableInterrupt function is obsolete and should not be called.
The VideoPortEnableInterrupt function reenables interrupts from a video adapter after a call to VideoPortDisableInterrupt.
Syntax
VIDEOPORT_DEPRECATED VIDEOPORT_API VP_STATUS VideoPortEnableInterrupt(
PVOID HwDeviceExtension
);
Parameters
HwDeviceExtension
Pointer to the miniport driver's device extension.
Return value
If VideoPortEnableInterrupt succeeds, it returns NO_ERROR. Otherwise, it returns ERROR_INVALID_FUNCTION.
Remarks
If you need to disable interrupts for the display adapter, write hardware-specific code to prevent the display adapter from generating interrupts. To subsequently enable interrupts, write hardware-specific code to allow the display adapter to resume generating interrupts.
You should not call VideoPortDisableInterrupt or VideoPortEnableInterrupt for the following reasons:
- Can disable interrupts for other devices that share an interrupt vector with the display adapter.
- Disables interrupts only on the processor where the current thread is running. On a multiprocessor computer, the display adapter can still interrupt another processor.
- On a multiprocessor machine, a call to VideoPortEnableInterrupt might run on a different processor than the previous corresponding call to VideoPortDisableInterrupt. In that case, interrupts will remain disabled for the processor on which VideoPortDisableInterrupt ran.
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 | Any level |