Type: String
Default Value: None
The helpFile property of the CMDialog class causes the Help button to be displayed on the common dialogs if one of the helpKeyword or helpContextId properties is also set. (If not, it is ignored.) The helpFile value provides the dialog with the help file from which the help topic is drawn. The help file can be Hypertext Markup Language (.htm or .html) files, an Adobe Acrobat Portable Document Format (.pdf) file, a Windows help (.hlp) file, or a compiled help (.chm) file.
Building a help file requires Adobe Acrobat, the Microsoft Windows Help Compiler, or any other Windows help compiler.