IWMCredentialCallback::AcquireCredentials method (wmsdkidl.h)

Статья
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 It has been superseded by Source Reader and Sink Writer.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 AcquireCredentials method acquires the credentials of the user, to verify that the user has permission to access a remote site.

Syntax

HRESULT AcquireCredentials(
  [in]      WCHAR   *pwszRealm,
  [in]      WCHAR   *pwszSite,
  [in, out] WCHAR   *pwszUser,
  [in]      DWORD   cchUser,
  [in, out] WCHAR   *pwszPassword,
  [in]      DWORD   cchPassword,
  [in]      HRESULT hrStatus,
  [in, out] DWORD   *pdwFlags
);

Parameters

[in] pwszRealm

Pointer to a wide-character null-terminated string that contains the name of the realm.

[in] pwszSite

Pointer to a wide-character null-terminated string containing the name of the site. The site is the name of the remote server.

[in, out] pwszUser

Pointer to a buffer for the user name. The application should copy the user name into this buffer. When this method is first called, the buffer is empty. If the method is called again — for example, if the user typed his or her credentials incorrectly — the buffer may contain the name from the previous invocation.

[in] cchUser

Specifies the size of the pwszUser buffer, in number of wide characters.

[in, out] pwszPassword

Pointer to a buffer for the password. The application should copy the user's password into this buffer.

[in] cchPassword

Specifies the size of the pwszPassword buffer, in number of wide characters.

[in] hrStatus

Specifies an HRESULT return code.

[in, out] pdwFlags

Pointer to a DWORD containing a bitwise OR of zero or more flags from the WMT_CREDENTIAL_FLAGS enumeration type. On input, the caller sets whichever flags are relevant. On output, the application should clear the flags that were set by the caller, and set any additional flags, as appropriate. For details, see WMT_CREDENTIAL_FLAGS.

Return value

If the method succeeds, it returns S_OK. If it fails, it returns an HRESULT error code.

Remarks

This method is used when a request for a remote URL requires authentication.

The reader object calls the AcquireCredentials method on the application to retrieve the user name and password of the user.

Requirements

Requirement	Value
Minimum supported client	Windows 2000 Professional [desktop apps only],Windows Media Format 7 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)

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