PRB: Program Error While Using Search in Wizard-Generated Form (136279)

RESOLUTION

The developer needs to implement an error-handling routine to trap for any errors that occur, call it in the Init event procedure of the Wizard- generated form, and set it back to the default in the Destroy event. The procedure itself can be contained in a .prg file that also calls the form.

Step-by-Step Example

The following example shows how to implement a simple error-handling routine similar to the FoxPro version 2.6 Screen Wizard.

1. Create a form by using the Form Wizard.
2. Modify the form, and in the form's Init event procedure, add this code:

      On Error Do MyErrorHandler in CallProg
   						

3. In the form's Destroy event procedure, add On Error. Now, closing the form will reset the error routine to the one Visual FoxPro uses by default.
4. Exit and save the form.
5. Create the following program, and name it CallProg:

      DO FORM <formname>
   
      PROCEDURE MyErrorHandler
         WAIT WINDOW MESSAGE()
   						

6. Close and save the program. Use the DO command to run it. Cause the the error. Now the error message is displayed in the Wait window. The user is no longer given options that could disable the form's functionality.