# Function Reference

# _WinAPI_DwmUnregisterThumbnail

Removes a Desktop Window Manager (DWM) thumbnail relationship

#include <WinAPIGdi.au3>
_WinAPI_DwmUnregisterThumbnail ( $hThumbnail )

## Parameters

$hThumbnail | Handle to the thumbnail relationship to be removed.

## Return Value

Success: | 1.
Failure: | 0 and sets the @error flag to non-zero, @extended flag may contain the HRESULT error code.

## Remarks

This function requires Windows Vista or later.

## See Also

Search DwmUnregisterThumbnail in MSDN Library.