IMediaDet::get_StreamTypeB method

[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

Note

[Deprecated. This API may be removed from future releases of Windows.]

 

The get_StreamTypeB method retrieves a string representing the GUID of the media type for the current stream.

Syntax

HRESULT get_StreamTypeB(
  [out, retval] BSTR *pVal
);

Parameters

pVal [out, retval]

Receives a string representation of the media type GUID.

Return value

If this method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.

Remarks

The returned BSTR is formatted like the following: {73647561-0000-0010-8000-00AA00389B71}

The method allocates memory for the string. The application must call SysFreeString to free the memory.

Before calling this method, set the file name and stream by calling IMediaDet::put_Filename and IMediaDet::put_CurrentStream.

If the media detector is in bitmap grab mode, this method returns E_INVALIDARG. For more information, see IMediaDet::EnterBitmapGrabMode.

Note

The header file Qedit.h is not compatible with Direct3D headers later than version 7.

 

Note

To obtain Qedit.h, download the Microsoft Windows SDK Update for Windows Vista and .NET Framework 3.0. Qedit.h is not available in the Microsoft Windows SDK for Windows 7 and .NET Framework 3.5 Service Pack 1.

 

Requirements

Requirement	Value
Header	Qedit.h
Library	Strmiids.lib

See also

IMediaDet Interface

Error and Success Codes