ON_CONTROL
Visual Studio 2010
Indicates which function will handle a custom-control notification message.
ON_CONTROL(wNotifyCode, id, memberFxn )
Control notification messages are those sent from a control to its parent window.
There should be exactly one ON_CONTROL macro statement in your message map for every control notification message that must be mapped to a message-handler function.
For more information and examples, see Message Handling and Mapping Topics.
