IWMReaderAdvanced4::GetURL method (wmsdkidl.h)

Article
4/26/2023

[The feature associated with this page, Windows Media Format 11 SDK, is a legacy feature. It has been superseded by Source Reader and Sink Writer. Source Reader and Sink Writer have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use Source Reader and Sink Writer instead of Windows Media Format 11 SDK, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

The GetURL method retrieves the URL of the file being read. This URL might be different from the URL that was passed to IWMReader::Open, because the reader might have been redirected.

Syntax

HRESULT GetURL(
       WCHAR *pwszURL,
  [in] DWORD *pcchURL
);

Parameters

pwszURL

[ out ] Pointer to a wide-character null-terminated string containing the URL of the file.

[in] pcchURL

[ in, out ] Pointer to a variable containing the number of wide characters in pwszURL.

Return value

The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.

Return code	Description
S_OK	The method succeeded.
E_INVALIDARG	NULL pointer argument.

Remarks

Call this method twice. The first time, pass NULL as the value for pwszURL. The method returns the size of the string in the pcchURL parameter. Allocate the required amount of memory for the string and call the method again. This time, pass a pointer to the allocated buffer in the pwszURL parameter.

Requirements

Requirement	Value
Minimum supported client	Windows 2000 Professional [desktop apps only],Windows Media Format 9 Series SDK, or later versions of the SDK
Minimum supported server	Windows 2000 Server [desktop apps only]
Target Platform	Windows
Header	wmsdkidl.h (include Wmsdk.h)
Library	Wmvcore.lib; WMStubDRM.lib (if you use DRM)

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