Secondary Help Windows - Win32 Programmer's Reference

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Secondary Help Windows

The main window of the Windows Help application is called the primary window. Windows Help can also display help topics in a secondary window. Unlike the main help window, a secondary window does not contain a menu bar. You can include a navigation bar in a secondary window, and you can add buttons to the bar. You can also choose to have Windows Help automatically adjust the height of secondary window to accommodate the topic.

You must define secondary windows in the [WINDOWS] section of your help project file, providing the name and, optionally, initial size and position of each window. You can direct the Windows Help application to display a topic in a secondary window by appending an angle bracket (>) and the name you have defined for the secondary window to the name of the help file and then passing the resulting string to the WinHelp function.

An application can change the size and position of a primary or secondary window by specifying the address of a HELPWININFO structure and the HELP_SETWINPOS command in a call to WinHelp. HELPWININFO specifies the name of the window and its new size and position. The primary help window is the "main" window.

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