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IAMOpenProgress::QueryProgress

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Microsoft DirectShow 9.0

IAMOpenProgress::QueryProgress

The QueryProgress method retrieves the progress of the file-open operation.

Syntax

  HRESULT QueryProgress(
  LONGLONG *pllTotal,
  LONGLONG *pllCurrent
);

Parameters

pllTotal

[out] Pointer to a variable that receives the length of the entire file, in bytes.

pllCurrent

[out] Pointer to a variable that receives the length of the downloaded portion of the file, in bytes.

Return Values

Returns an HRESULT value. Possible values include those shown in the following table.

Return code Description
S_OK Success.
VFW_S_ESTIMATED The returned values are estimates.
E_UNEXPECTED Unexpected error.

Requirements

Header: Declared in Strmif.h; include Dshow.h.

Library: Use Strmiids.lib.

See Also