In the Project Explorer go to Configuration > Microsoft HTML Help > Help Windows and create at least one secondary help window type definition with Add.Īdjust the settings of the window definition as you want the external window to appear – in addition to the size and position you may want to switch off navigation controls etc. It does not work when linking to topics in another CHM file.

You cannot link open topics from other CHM files in external windows.ĭue to restrictions in the Microsoft HTML Help CHM viewer, you can only display topics from the current CHM file in an external window. You cannot directly associate a help window type with an individual topic and you cannot set a topic in the TOC to open in an external window when you click on its TOC entry. Important: Help window types can only be used in hyperlinks. Topics can only be displayed in external windows in HTML Help CHM files and the help window settings have no effect in other help formats. In HTML Help you can use additional help window definitions to display topics in external windows when they are opened with hyperlinks.

Chm document