[Gambas-user] Dynamically loading components

[Sebi Kul]

The reason for doing this is the following:
I'm developing a project which would theoretically have 2 modules, the 
base one (the program itself) and the online module, (which adds 
synchronization capabilities). Because i would like to keep the classes 
inside the Online module hidden, to avoid any security issues (the base 
project is subversioned) i am including it as a separate component. 
What i would like to do is let the base component look for the online 
module, if it finds it, load it, if not, disable the sections in the 
GUI that use this functions/classes.

I managed to remove the compile errors by creating classes in the Base 
project with the same name as in the Online component, and inheriting 
the corresponding class. I just need to know how to load the component 
only if the file exist.

Thanks all for your help!

On mar 10 may 2011 21:56:27 ART, Benoît Minisini wrote:
>> Hi!
>>
>> I am using Gambas 3 to develop a modular application. I would like to
>> know if it's possible to load components dynamically (If the component
>> file exist, load it, if not, skip the execution code where the
>> component's functions are called)
>>
>> What I have so far is this:
>>
>> ==========
>> Try Component.Load("daily-school-online.gambas")
>>
>> If Component.IsLoaded("daily-school-online.gambas") Then
>>     OnlineModuleLoaded = True
>> Endif
>> =========
>>
>> But for this to work, I have to add the component as a library on the
>> projects setting dialog, meaning that if the file does not exist, the
>> program wont start. I also have the problem that if I don't add the
>> component as a library, the project wont compile, as the parser will
>> find functions that don't exist on this project, but are declared on the
>> component.
>>
>> Does anybody have any ideas on how to achieve this?
> 
> Why do you want to dynamically load components ?
> 
> In Gambas, the only reason for doing that is preventing the load of unneeded 
> shared libraries (i.e. native components).
> 
> If you are not in that case, then you can put all your code in the same 
> project. Gambas loads a class the first time it is used, so if you don't use a 
> class, it will never be loaded.
> 
> Regards,