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AM_WST_STATE enumeration (iwstdec.h)

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[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

The AM_WST_STATE enumeration specifies whether WST closed captioning is enabled or disabled.

Syntax

typedef enum _AM_WST_STATE {
  AM_WST_STATE_Off = 0,
  AM_WST_STATE_On
} AM_WST_STATE, *PAM_WST_STATE;

Constants

 
AM_WST_STATE_Off
Value: 0
Specifies that WST closed captioning is enabled.
AM_WST_STATE_On
Specifies that WST closed captioning is disabled.

Requirements

Requirement Value
Minimum supported client Windows XP [desktop apps only]
Minimum supported server Windows Server 2003 [desktop apps only]
Header iwstdec.h

See also

DirectShow Enumerated Types

IAMWstDecoder