Set Custom Form Class dialog box
The Form designer uses the Form class as the base form for all new forms, unless you have specified a custom form class. Here is where you can specify a custom form class to be applied to the current and future forms.
Custom form class files have a .CFM extension.
Dialog box options
File name containing class
Enter the name of the file that contains the class you want to use. Or click to display a list of existing class files. One file can contain more than one class.
Class name
Select the name of the class to use as the new base form. The list displays all the classes in the class file you selected.
Clear custom form class
Clear the current custom form class and restore the default dBASE Plus form as the base form class.
How to get there: From the Form designer, choose File|Set Custom Form Class