Level Extreme platform
Subscription
Corporate profile
Products & Services
Support
Legal
Français
How to trap errors with ON ERROR while error event in pl
Message
 
To
11/02/2002 22:12:01
General information
Forum:
Visual FoxPro
Category:
Other
Miscellaneous
Thread ID:
00618670
Message ID:
00618674
Views:
25
Hi Mark,

You can't get ON ERROR to take precedence over an Error method of an object in the program stack. However, you could either move your code into method of a Custom class object, or wrap your UDF with an object, whose Error event method would then be usable for trapping errors as you intend. Even if you leave the code in a UDF and have a method of your wrapper object call it, the wrapper's Error event will catch any errors encountered in the PRG.

Don't hold your breath on getting any major revisions to VFP's arcane error handling features. See http://www.ideaxchg.com/ix07/er/_sys/toccontu.htm for more about this subject, including a downloadable demo.

Mike

>Does anyone know of a way to set an ON ERROR statement in a prg and not have an actual Error passed back up to an Error() Event in an object that called the prg?
>
>For instance, in the CodeMine framework, Error trapping code is in the application object Error() event as well as in other classes. I want to call a utility prg which does its own error trapping. However, the ON ERROR's in the prg get ignored. I would really like a way to override the errors being passed up to the error event, and trap them right there.
>
>It seems that VFP needS an optional switch on the ON ERROR statement that will allow an ON ERROR statement to supercede an Error() event.
>
>
>For example, my prg might have code as follows:
>
>m.lcSavOnError= on("error")
>m.llFlag= .f.
>ON ERROR m.llFlag= .t.
>
>Use mytable
>
>ON ERROR &lcSavOnError
>
>if m.llFlag
> *..display error we got when using table
>endif
>
>Thanks in advance.
Montage

"Free at last..."
Previous
Next
Reply
Map
View

Click here to load this message in the networking platform