How to Add Code to Wizard-Generated Command Buttons

 Last reviewed: June 1, 1996
Article ID: Q134790
The information in this article applies to:
  • Microsoft Visual FoxPro for Windows, version 3.0
  • Microsoft Visual FoxPro for Macintosh, version 3.0b

SUMMARY

You can add code to command buttons created by the Form Wizard and still have the command buttons function properly.

MORE INFORMATION

The command buttons created by the Form Wizard are based on classes defined in the Vfp\Wizards\Wizstyle.vcx visual class library.

All of the command buttons are contained in one of three classes, depending on which style of buttons was used: 

class Name      Button Style

txtbtns         Horizontal; text
verttxtbtns     Vertical; text
picbtns         Horizontal; picture
Each button is assigned an individual name, following recommended Visual FoxPro naming conventions: 

   cmdPrev
   cmdNext
   cmdTop
   cmdEnd
   cmdFind
   cmdPrint
   cmdAdd
   cmdEdit
   cmdDelete
   cmdExit
The code for each button is contained in the class definition, not in each button on the form. If method code is entered in an event, such as the click event, which also has code defined in the parent class, the new code will override the parent class code. The parent class code must be explicitly called within the method.

You can add code to the buttons in a generated screen, as long as the code in the parent class is called using the scope resolution operator, as in this example: 

   txtbtns.cmdAdd::Click
   WAIT WINDOW "I just called the parent click code"
If you want the additional code to be processed prior to the default button behavior, place it before the line that calls the parent method. If you want the additional to be processed after the default button behavior, place it after the line that calls the parent method.

Additional reference words: VFoxMac 3.00b 3.00 VFoxWin
KBCategory: kbtool
KBSubcategory: FxtoolFormdes

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY.

Last reviewed: June 1, 1996
© 1998 Microsoft Corporation. All rights reserved. Terms of Use.