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IMediaSeeking::GetCapabilities method (strmif.h)

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[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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.]

The GetCapabilities method retrieves all the seeking capabilities of the stream.

Syntax

HRESULT GetCapabilities(
  [out] DWORD *pCapabilities
);

Parameters

[out] pCapabilities

Pointer to a variable that receives a bitwise combination of AM_SEEKING_SEEKING_CAPABILITIES flags.

Return value

Returns an HRESULT value. Possible values include the following.

Return code Description
S_OK
 Success.
E_POINTER
 NULL pointer argument.

Remarks

This method returns information on all the seeking capabilities of the stream. Examine pCapabilities by performing a separate bitwise-AND operation on each AM_SEEKING_SEEKING_CAPABILITIES value you are interested in.

C++ 
DWORD dwCaps = 0;
pMediaSeeking->GetCapabilities(&dwCaps);

if (dwCaps & AM_SEEKING_CanGetCurrentPos)
{
// The stream can seek to the current position.
}
if (dwCaps & AM_SEEKING_CanPlayBackwards)
{
// The stream can play backward.
}

Requirements

Requirement Value
Minimum supported client Windows 2000 Professional [desktop apps only]
Minimum supported server Windows 2000 Server [desktop apps only]
Target Platform Windows
Header strmif.h (include Dshow.h)
Library Strmiids.lib

See also

Error and Success Codes

IMediaSeeking Interface