|Microsoft DirectX 9.0|
This topic applies to Windows XP only.
The StateChange method is called by when the state of the Video Control changes.
void StateChange( MSVidCtlStateList PrevState, MSVidCtlStateList CurrState );
Specifies the previous state, as a member of the MSVidCtlStateList enumeration.
Specifies the current state, as as a member of the MSVidCtlStateList enumeration.
This method does not return a value.
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.