// dispmprt.h

DXGKDDI_DISPLAYMUX_POST_SWITCH_AWAY DxgkddiDisplaymuxPostSwitchAway;

NTSTATUS DxgkddiDisplaymuxPostSwitchAway(
  PVOID DriverContext,
  ULONG VidPnTargetId
)
{...}
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Windows Driver Kit DDI reference (nc-dispmprt-dxgkddi_displaymux_post_switch_away)

Description

Dxgkrnl calls the kernel-mode display driver's (KMD) DxgkddiDisplayMuxPostSwitchAway function to notify the driver that it's no longer connected to the display.

Parameters

`DriverContext`

[in] Handle to a context block that is associated with a display adapter. KMD's DxgkDdiAddDevice function previously provided this handle to Dxgkrnl.

`VidPnTargetId`

[in] The VidPN target that the DDI is being called for.

Return value

DxgkddiDisplayMuxPostSwitchAway returns STATUS_SUCCESS if it succeeds. Otherwise, it returns an appropriate error code.

Remarks

This DDI is called under synchronization level 2.

For more information, see Automatic Display Switch.

DXGKDDI_DISPLAYMUX_POST_SWITCH_AWAY - NtDoc