The HelpButtonClicked event occurs when the Help button in the form's caption bar is clicked. The Help button is displayed when the HelpButton property is set to true. HelpButtonClicked can be canceled.
Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.