14.4.4 Adding Help

The configuration and password dialog boxes for screen savers typically include a Help button. Screen saver applications can check for the Help-button identifier and call the WinHelp function in the same way Help is provided in other Windows applications. In addition, SCRNSAVE.LIB includes HelpMessageFilterHookFunction, which posts the MyHelpMessage message whenever the user presses the F1 key while using a screen saver dialog box. A screen saver can check for this message in the ScreenSaverConfigureDialog function, as follows:

switch (msg) {
    .
    . /* process messages */
    .

    default:
        if (msg==MyHelpMessage)
            DoLocalHelpFunc();
}