DwmUnregisterThumbnail function (dwmapi.h)
Removes a Desktop Window Manager (DWM) thumbnail relationship created by the DwmRegisterThumbnail function.
Syntax
HRESULT DwmUnregisterThumbnail(
[in] HTHUMBNAIL hThumbnailId
);
Parameters
[in] hThumbnailId
The handle to the thumbnail relationship to be removed. Null or non-existent handles will result in a return value of E_INVALIDARG.
Return value
If this function succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.
Remarks
Unregistering DWM thumbnail relationships must be done within the process that registered the relationships.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows Vista [desktop apps only] |
| Minimum supported server | Windows Server 2008 [desktop apps only] |
| Target Platform | Windows |
| Header | dwmapi.h |
| Library | Dwmapi.lib |
| DLL | Dwmapi.dll |