通过

CGenericList::GetHeadPosition

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Microsoft DirectShow 9.0

CGenericList::GetHeadPosition

The GetHeadPosition method retrieves the position of the first item in the list.

Syntax

  POSITION GetHeadPosition(void);

Return Value

Returns a POSITION value, or NULL if the list is empty.

Requirements

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

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

See Also