On Error Resume next wont work... and others

[lainmaster]

Yo, first off "On Error Resume Next" won't work sometimes, why do peeps keep using it? I have downloaded code that works sometimes and sometimes it doesn't... which is said to work fine.

Also, I am doing an IDE imitation for my Fi - Game Maker proyect (www.lainmaster.tk, if interested), and I want to do the Drop Down List Poput thingy that shows all the properties, methods and functions of an object. I will use CallByName since my proyect will come with some DLLs I made, and parsing the code (or parseing?) would be too much work AND even if i decide so, I want to know how the heck the VB IDE does that. I made a DLL explorer thingy some time ago but i forgot how to do it now, hehe, but it only worked for like 5% of the DLLs in windows/system32/...

And finally, how do I check if that property, method, function, mikey mouse, or whatever, exists in that object? I mean, the CallByName uses Err.Raise to show the box If something happens, what does this function actually ask when it comes to either doing it or showing the Err.Raise thing?

Thanks=)

[randem]

It always works...Sometimes not like you expect it to if not used properly.

Show your code...

[dclamp]

Show your own error code then.

On Error GoTo ErrorMessage
      'Some Code Here
      Exit Sub '<----------Dont Forget this!
ErrorMessage:
      MsgBox "An error has occured!" & vbcrlf & vbcrlf & Err.Description, VbOkOnly + VbExclaimation, "Error: " & Err.Number

[westconn1]

unless you know what error you are going to get and want to ignore it then you should not use on error resume next, if one line in the sub has an error that often makes the rest of the sub meaningless, also it becomes impossible to debug your code with if errors are ignored

[schoolbusdriver]

How you've set up the error trapping in the IDE will also make a difference.

[lainmaster]

For example...

Dim A As Byte
On Error Resume NExt
A=500

Sometimes shows the "error!" dialog and sometimes doesn't... in other words... omg i think maybe i changed VB IDE options to look for errors at compile... but the on error behaviour (however you spell that) at EXEs is pretty random... i bet it's cuz sometimes it checks out if it's gonna have an error before storing the code in memory =P whatever, On Error sucks and it's gay.

I'ma learn C++ this summer hahaha, anyways, this topic wasn't about the on error thingy.

------------

The TypeLib thing helped me out with the other part. I guess it only accepts ActiveX DLLs and not standar DLLs, with it I can know almost everything about a DLL, it's classes, methods, properties, etc, up to know I only have this problem:
I can't know if something is a function or sub, guess it's a sub when no return type is specified and VB changed automatically to Variant if not specified in the IDE

Also, i was expecting to be able to know the current proyect's data on mothods, classes, etc... but well whatever... I think I will chose paresing stuff=P It will give me more freedom on handleing everything

About the On Error Resume/GoTo/BlaBla...
I just wanted to know if there was a way of knowing EVERYTHING like every possible value for a variable (so we never generate an overflow)... but for the APIs or DLLs... well maybe it's not possible since maybe the DLL uses a private function to determine if an error.raise should be used or not....

BTW "GoTo" is also crappy.... and should not be used.