[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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_OffValue: 0 Specifies that WST closed captioning is enabled. |
AM_WST_STATE_OnSpecifies 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 |