Hi, I try to use a Gambas-Class (not a Form) as starting class. I added "Public Sub Main() ...", but Gambas says "No starting method". How to do this? Thanks!

 Try using a Module, not a class. If you still can't get it to work, post the code, so we can have a look.

Must be a class to use the Application_Error event

Have you right clicked the class in the left column and set it as startup class?

 Don't use Main() for a class.
Use _init() or _new()

neither _init() nor _new()

paco said

Must be a class to use the Application_Error event

A Module does not have and cannot raise its own Events, but it can raise Events of other Classes.

Exemplum:

 yes vuott, but I think it's the interpreter that fires the Application_Error in the starting class

 Ok that works. But it's nothing else than an Event-Handler in a module - very confusing.
My simple starting question was, how to use a class as starting-class - Gambas offers this option in it's project-tree. Is there a way?

In my opinion Gambas, to start a "command line" application, looks for the main module "Main.module"; instead, to start an application in a graphical environment (GTK or QT), it looks for the main class "FMain.class".
Therefore, I believe it is not possible to start Gambas "directly" from a specific secondary Class, created by you.
I believe that the correct procedure is to create an instance of the specific secondary Class in the Main Class or in the Main Module of the application (in the startup Class or Module) and in those to invoke a routine of the specific secondary Class that you created.

Why does your class HAVE to be the startup ?
Can you not just make a Startup.module then have it load the class?


Or…

 It's kinda badly named isn't it ?

Setting the "Startup class"
(but sorry you can't use a class just a module ! lol)

Benoit provided the simple answer on the mailing list (bless him)…

Main() must be static

BruceSteers said

Benoit provided the simple answer on the mailing list……

ok  :!:

I'm guessing the whole class should then have to be static too?
and any global variables referenced from Main() would need to be declared as static too.

But i could well be wrong about that.

It makes more sense for your startup class/module to not really do much except initiate/run your other class files like vuott says.

BruceSteers said

I'm guessing the whole class should then have to be static too?
and any global variables referenced from Main() would need to be declared as static too.

Code (gambas)

1. ' Gambas class file
2.  
3. Create Static
4.  
5. Static $myGlobalInteger As Integer
6.  
7. Static Public Sub Main()
8.  
9. $myGlobalInteger = 5
10.  
11. End
12.  
13.  

But i could well be wrong about that.

Perhaps    Reread the first bit of the Create Static help till yours eyes bleed (and then tell me what it means  )
I have only ever had one case where I had to use that command. Don't ask, I have no idea why.

BruceSteers said

It makes more sense for your startup class/module to not really do much except initiate/run your other class files like vuott says.

do much other than everything that you need done before your real main processing begins….
Is the internet up?
Is the database server running?
Is it Friday the 13th?

etc