IOCTL_VIDEO_QUERY_CURRENT_MODE - NtDoc

Native API online documentation, based on the System Informer (formerly Process Hacker) phnt headers 
// ntddvdeo.h

// CTL_CODE(0x0023, 0x102, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define IOCTL_VIDEO_QUERY_CURRENT_MODE 0x00230408
View the official Windows Driver Kit DDI reference

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Windows Driver Kit DDI reference (ni-ntddvdeo-ioctl_video_query_current_mode)

IOCTL_VIDEO_QUERY_CURRENT_MODE IOCTL

Description

Returns information about the current adapter mode. Miniport drivers are required to support this modal request.

Parameters

Major code

Input buffer

None

Input buffer length

Output buffer

The miniport driver returns the mode information in a VIDEO_MODE_INFORMATION structure in the VRP OutputBuffer.

Output buffer length

Input/output buffer

Input/output buffer length

Status block

If the miniport driver successfully returns the mode data, it sets the Information member of the STATUS_BLOCK structure to sizeof(VIDEO_MODE_INFORMATION); otherwise, the miniport driver sets this member to zero.

See also

STATUS_BLOCK

VIDEO_MODE_INFORMATION

View the official Windows Driver Kit DDI reference

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