Break in Class Module vs. Break on Unhandled Errors (VB6 Error Trapping, Options Setting in IDE)
- by Erx_VB.NExT.Coder
Basically, I'm trying to understand the difference between the "Break in Class Module" and "Break on Unhandled Errors" that appear in the Visual Basic 6.0 IDE under the following path:
Tools --> Options --> General --> Error Trapping
The three options appear to be:
Break on All Errors
Break in Class Module
Break on Unhandled Errors
Now, apparently, according to MSDN, the second option (Break in Class Module) really just means "Break on Unhandled Errors in Class Modules". Also, this option appears to be set by default (ie: I think its set to this out of the box).
What I am trying to figure out is, if I have the second option selected, do I get the third option (Break on Unhandled Errors) for free? In that, does it come included by default for all scenarios outside of the Class Module spectrum? To advise, I don't have any Class Modules in my currently active project. I have .bas modules though. Also, is it possible that by Class Mdules they may be referring to normal .bas Modules as well? (this is my second sub-question).
Basically, I just want the setting to ensure there won't be any surprises once the exe is released. I want as many errors to display as possible while I am developing, and non to be displayed when in release mode. Normally, I have two types of On Error Resume Next on my forms where there isn't explicit error handling, they are as follows:
On Error Resume Next ' REQUIRED
On Error Resume Next ' NOT REQUIRED
The required ones are things like, checking to see if an array has any length, if a call to its UBound errors out, that means it has no length, if it returns a value 0 or more, then it does have length (and therefore, exists). These types of Error Statements need to remain active even while I am developing. However, the NOT REQUIRED ones shouldn't remain active while I am developing, so I have them all commented out to ensure that I catch all the errors that exist.
Once I am ready to release the exe, I do a CTRL+H to find all occurrences of:
'On Error Resume Next ' NOT REQUIRED
(You may have noticed they are commented out)... And replace them with:
On Error Resume Next ' NOT REQUIRED
... The uncommented version, so that in release mode, if there are any leftover errors, they do not show to users.
For more on the description by MSDN on the three options (which I've read twice and still don't find adequate) you can visit the following link:
http://webcache.googleusercontent.com/search?q=cache:yUQZZK2n2IYJ:support.microsoft.com/kb/129876&hl=en&lr=lang_en%7Clang_tr&gl=au&tbs=lr:lang_1en%7Clang_1tr&prmd=imvns&strip=1
I’m also interested in hearing your thoughts if you feel like volunteering them (and this would be my tentative/totally optional third sub-question, that being, your thoughts on fall-back error handling techniques).
Just to summarize, the first two questions were, do we get option 3 included in all non-class scenarios if we choose option 2? And, is it possible that when they use the term "Class Module" they may be referring to .bas Modules as well? (Since a .bad Module is really just a class module that is pre-instantiated in the background during start-up).
Thank you.
