通过

IMediaSample::GetActualDataLength

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Microsoft DirectShow 9.0

IMediaSample::GetActualDataLength

The GetActualDataLength method retrieves the length of the valid data in the buffer.

Syntax

  LONG GetActualDataLength(void);

Return Values

Returns the length of the valid data, in bytes.

Requirements

**  Header:** Dshow.h.

  Library: Quartz.dll.

See Also