הערה
הגישה לדף זה מחייבת הרשאה. באפשרותך לנסות להיכנס או לשנות מדריכי כתובות.
הגישה לדף זה מחייבת הרשאה. באפשרותך לנסות לשנות מדריכי כתובות.
Retrieves the metadata query reader from the decoder.
Syntax
HRESULT GetMetadataQueryReader(
[out] IWICMetadataQueryReader **ppIMetadataQueryReader
);
Parameters
[out] ppIMetadataQueryReader
Type: IWICMetadataQueryReader**
Receives a pointer to the decoder's IWICMetadataQueryReader.
Return value
Type: HRESULT
If this method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.
Remarks
If an image format does not support container-level metadata, this will return WINCODEC_ERR_UNSUPPORTEDOPERATION. The only Windows provided image format that supports container-level metadata is GIF. Instead, use IWICBitmapFrameDecode::GetMetadataQueryReader.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows XP with SP2, Windows Vista [desktop apps | UWP apps] |
| Minimum supported server | Windows Server 2008 [desktop apps | UWP apps] |
| Target Platform | Windows |
| Header | wincodec.h |
| Library | Windowscodecs.lib |
| DLL | Windowscodecs.dll |
See also
Conceptual
Metadata Query Language Overview