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CSourceSeeking::QueryPreferredFormat

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Microsoft DirectShow 9.0

CSourceSeeking::QueryPreferredFormat

The QueryPreferredFormat method retrieves the object's preferred time format. This method implements the IMediaSeeking::QueryPreferredFormat method.

Syntax

  HRESULT QueryPreferredFormat(
    GUID *pFormat
);

Parameters

pFormat

Pointer to a variable that receives a time format GUID. See Time Format GUIDs.

Return Value

Returns one of the HRESULT values listed in the following table.

Value Description
S_OK Success
E_POINTER NULL pointer value

Remarks

The only time format supported by the base class is TIME_FORMAT_MEDIA_TIME (100-nanosecond units).

Requirements

**  Header:** Declared in Ctlutil.h; include Streams.h.

**  Library:** Use Strmbase.lib (retail builds) or Strmbasd.lib (debug builds).

See Also