Context-Sensitive Help

All common dialog boxes provide context-sensitive Help for the standard controls of the dialog box. The user can display Help for individual controls by any of the following methods:

• Selecting the control and pressing the F1 key

• Clicking the ? button in the title bar and subsequently clicking on a control

• Clicking the right mouse button over a control

If you customize a dialog box by adding new controls, you must also extend help support for these controls by processing requests for help in the hook procedure. The hook procedure receives the following messages when the user requests help.

User Action	Message
The user clicked the right mouse button over a control.	WM_CONTEXTMENU
The user pressed the F1 key.	WM_HELP
The user clicked the ? button in the title bar and then clicked on a control.	WM_HELP

You should process these messages for the controls you have added, but let the default dialog box procedure process the messages for the standard controls. For more information about how to process these messages, see the Help overview.

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