commandhandler.md

description	title	ms.date	ms.topic	helpviewer_keywords	ms.assetid
Learn more about: CommandHandler	CommandHandler	11/04/2016	reference	CommandHandler function	662bc7bf-4a10-42b3-986d-d8bae4f63551

CommandHandler

CommandHandler is the function identified by the third parameter of the COMMAND_HANDLER macro in your message map.

Syntax

LRESULT CommandHandler(
    WORD wNotifyCode,
    WORD wID,
    HWND hWndCtl,
    BOOL& bHandled);

Parameters

wNotifyCode
The notification code.

wID
The identifier of the menu item, control, or accelerator.

hWndCtl
A handle to a window control.

bHandled
The message map sets bHandled to TRUE before CommandHandler is called. If CommandHandler does not fully handle the message, it should set bHandled to FALSE to indicate the message needs further processing.

Return Value

The result of message processing. 0 if successful.

Remarks

For an example of using this message handler in a message map, see COMMAND_HANDLER.

See also

Implementing a Window
Message Maps
WM_NOTIFY