This interface provides methods used to subclass the messaging and drawing functions of IASControl.
Method |
Description |
| IASClassMsgSink::HandleClose | Enables a control to notify its sink when a form closes the control. |
| IASClassMsgSink::HandleDraw | Enables a control to notify its sink when drawing takes place. |
| IASClassMsgSink::HandleGotFocus | Enables a control to notify its sink when the control gains focus. |
| IASClassMsgSink::HandleKeyPress | Enables a control to notify its sink when a character key is pressed. |
| IASClassMsgSink::HandleLostFocus | Enables a control to notify its sink when the control loses focus. |
| IASClassMsgSink::HandleMessage | Enables a control to notify its sink when a message is received. |
| IASClassMsgSink::HandleStart | Notifies the application that the control has started. |
The IASClassMsgSink interface extends the IDispatch interface.
To use this sink, create an object that exposes the IASClassMsgSink interface and place a pointer to it in the IASControl ClassMsgSink property. The control passes information on to the appropriate IASClassMsgSink method for processing. To implement only a subset of the IASClassMsgSink methods, have the remainder return S_FALSE. This indicates to the IASControl method that no processing has taken place.