通过

IAMWstDecoder::GetDrawBackgroundMode

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Microsoft DirectShow 9.0

IAMWstDecoder::GetDrawBackgroundMode

Downstream filters use the GetDrawBackgroundMode method to determine whether the caption text background is opaque or transparent.

Syntax

  HRESULT GetDrawBackgroundMode(
  
  AM_WST_DRAWBGMODE*
  
  lpMode
  
  );

Parameters

lpMode

[out]  Pointer to a variable that receives a member of the AM_WST_DRAWBGMODE enumeration. This parameter receives one of the following values.

Value Description
AM_WST_DRAWBGMODE_Opaque Caption text background is opaque.
AM_WST_DRAWBGMODE_Transparent Caption text background is transparent.

Return Values

When the method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.

Requirements

Header: Include Iwstdec.h.

Library: Use Strmiids.lib.

See Also