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The VideoPortGetVgaStatus function detects whether the calling device is decoding a VGA I/O address.
Syntax
VIDEOPORT_DEPRECATED VIDEOPORT_API VP_STATUS VideoPortGetVgaStatus(
PVOID HwDeviceExtension,
[out] OUT PULONG VgaStatus
);
Parameters
HwDeviceExtension
Pointer to the miniport driver's device extension.
[out] VgaStatus
Pointer to the resulting VGA status. A value of zero (0) indicates that VGA is not enabled; a value of one (1) indicates that VGA is enabled.
Return value
VideoPortGetVgaStatus returns one of the following values:
| Return code | Description |
|---|---|
| NO_ERROR | The function completed successfully. |
| ERROR_INVALID_FUNCTION | The device was not a PCI device. |
Remarks
The VideoPortGetVgaStatus function is mainly used to determine whether a device is the sole VGA-enabled device in a multiple monitor system.
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 | PASSIVE_LEVEL |