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_IMSVidCtlEvents::StateChange

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Microsoft DirectShow 9.0

_IMSVidCtlEvents::StateChange

This topic applies to Windows XP or later.

The StateChange method is called by when the state of the Video Control changes.

Syntax

  void StateChange(
  
  MSVidCtlStateList
  
  PrevState
  ,
  
  MSVidCtlStateList
  
  CurrState
  
  );

Parameters

  PrevState

Specifies the previous state, as a member of the MSVidCtlStateList enumeration.

  CurrState

Specifies the current state, as as a member of the MSVidCtlStateList enumeration.

Return Values

This method does not return a value.

Remarks

The state of the Video Control does not necessarily correspond to the state of all the devices in the filter graph.

The dispatch identifier (dispid) of this method is dispidStateChange.

Requirements

  Header: Dshow.h.

  Library: Quartz.dll.

See Also