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IAMExtendedSeeking::get_ExSeekCapabilities method (qnetwork.h)

[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 get_ExSeekCapabilities method retrieves the extended seeking capabilities of the filter.

Syntax

HRESULT get_ExSeekCapabilities(
  [out] long *pExCapabilities
);

Parameters

[out] pExCapabilities

Pointer to a variable that receives a bitwise OR of AMExtendedSeekingCapabilities flags.

Return value

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

Remarks

The Windows Media Source filter sets the extended seeking flags as follows.

Flag Condition
AM_EXSEEK_BUFFERING Always.
AM_EXSEEK_NOSTANDARDREPAINT Always.
AM_EXSEEK_SENDS_VIDEOFRAMEREADY If the video pin has been created.
AM_EXSEEK_CANSCAN, AM_EXSEEK_SCANWITHOUTCLOCK If the stream supports rates other than 1.0.
AM_EXSEEK_CANSEEK If the stream has been authored to be seekable.
AM_EXSEEK_MARKERSEEK If the stream contains markers.

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 qnetwork.h

See also

IAMExtendedSeeking Interface