[Gambas-user] refer to an object with a string

[Jean-Yves F. Barbier]

Doriano Blengino a écrit :
> Jean-Yves F. Barbier ha scritto:
>> Hi list,
>>
>> I'm trying to refer to come couples Label/CheckBox that have the same suffix
>> (lbl_ONE & ckb_ONE) to enable/disable couple in one shot.
>>
>> But after building my strings that are orders, GB tell me its not an object:
>>
>> PUBLIC SUB lblckb_on_off(which AS String, on AS Boolean)
>>   DIM lbl AS String
>>   DIM ckb AS String
>>   
>>   lbl = "lbl_" & which & ".Enabled = "
>>   ckb = "ckb_" & which & ".Enabled = "
>>   IF onoff THEN   ' ON
>>     lbl &= "TRUE"
>>     ckb &= "TRUE"
>>     (SOMETHING TO "EXEC" THE STRING)lbl    (or may be: (SOMETHING)lbl = TRUE)
>>     (SOMETHING TO "EXEC" THE STRING)ckb
>>   ENDIF 
>> END 
>>
>> Is there a way to do that?
>>   
> The EVAL statement, but I never used it and also I am not sure it exists 
> in gambas2.

Yes it exists, however I'm not tough enough to tell if it can work that way

> But there are other ways, more efficient. One is to find object handlers 
> using introspection. You can find all the children of a form and, based 
> on their name, do things (you can also scan all the children and, when 
> you find the one which has the right name, do the thing you want). The 

I don't see (may be you're talking about iterating form content is a Variant)

> other one, which I would recommed, is to create dynamically you objects, 
> especially if they are many, and keep a reference to them using arrays 
> or collections. Or a mix of the two: you create a form visually in the 
> IDE, then in a routine collect all the handlers, and from then on you 
> always use those handlers. I suspect you are doing something very large...

No, in fact, not that big.
On 2nd thought, it wasn't a good idea (even if it has worked, code would have
been beeing too much obscur)

But I keep your idea about very large arrays because I'll soon need it :)

Regards
JY
-- 
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