PRB: ERROR "<formname> not an object" When Accessing Form

MORE INFORMATION

Because they are modal, the program below pauses after the two forms appear. When the forms are closed, the program will continue after the FrsMyset.show command. However, because the forms are closed, the error "Unknown member FRMMYFORM1" is displayed.

     PUBLIC FrsMyset, FrmMyform1
   FrsMyset = CREATEOBJECT("myformset")
   FrsMyset.show

   FrsMyset.FrmMyform1.addobject("MyButton","commandbutton")
   FrsMyset.FrmMyform1.MyButton.left=40
   FrsMyset.FrmMyform1.MyButton.visible=.t.

   DEFINE CLASS myformset AS formset
      windowtype = 1    && this is the offending statement
      ADD OBJECT FrmMyform1 AS form
      FrmMyform1.caption="Form 1"
      add object FrmMyform2 as form
      FrmMyform2.caption="Form 2"
      FrmMyform2.autocenter=.t.

      PROCEDURE show
         =MESSAGEBOX("Show Method")
      ENDPROC
   ENDDEFINE
				

The WindowType property controls whether the form is modeless (the default) or modal. If the form is modal, the user must close the form before accessing any other elements of your application's user interface (see below).

WindowType
setting    Description
-----------------------------------------------------------------

0           Modeless.
1           Modal. No other Form objects can become active and
            the menu is inactive. All Form objects in the FormSet
            are active.
2           Read. The FormSet behaves as if it were activated by
            the READ command. Execution stops on the Show method
            or DO FORM command. When the Form is deactivated,
            execution continues. (Included for backward compatibility.)
3           Read Modal. The FormSet behaves as if it were activated
            by a READ command's   MODAL clause. Program execution stops
            at the Show method or the DO FORM command. Any Form objects
            specified in the WindowList property are available, but other
            Form objects and the menu are not available. (Included for
            backward compatibility.)
				

Removal of the WindowType property (or setting it to 0) in the class definition allow the windows to be modeless and thus allow program execution to continue after the windows are displayed.