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Message Map Macros (MFC)

 

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The latest version of this topic can be found at Message Map Macros (MFC).

To support message maps, MFC supplies the following macros:

Message-Map Declaration and Demarcation Macros

DECLARE_MESSAGE_MAP Declares that a message map will be used in a class to map messages to functions (must be used in the class declaration).
BEGIN_MESSAGE_MAP Begins the definition of a message map (must be used in the class implementation).
END_MESSAGE_MAP Ends the definition of a message map (must be used in the class implementation).

Message-Mapping Macros

ON_COMMAND Indicates which function will handle a specified command message.
ON_CONTROL Indicates which function will handle a specified control-notification message.
ON_MESSAGE Indicates which function will handle a user-defined message.
ON_OLECMD Indicates which function will handle a menu command from a DocObject or its container.
ON_REGISTERED_MESSAGE Indicates which function will handle a registered user-defined message.
ON_REGISTERED_THREAD_MESSAGE Indicates which function will handle a registered user-defined message when you have a CWinThread class.
ON_THREAD_MESSAGE Indicates which function will handle a user-defined message when you have a CWinThread class.
ON_UPDATE_COMMAND_UI Indicates which function will handle a specified user-interface update command message.

Message-Map Range Macros

ON_COMMAND_RANGE Indicates which function will handle the range of command IDs specified in the first two parameters to the macro.
ON_UPDATE_COMMAND_UI_RANGE Indicates which update handler will handle the range of command IDs specified in the first two parameters to the macro.
ON_CONTROL_RANGE Indicates which function will handle notifications from the range of control IDs specified in the second and third parameters to the macro. The first parameter is a control-notification message, such as BN_CLICKED.

For more information on message maps, the message-map declaration and demarcation macros, and the message-mapping macros, see Message Maps and Message Handling and Mapping Topics. For more information about message-map ranges, see Handlers for Message-Map Ranges.

See Also

Message Maps