GuiCtrl Creation by Array

[JohnOne]

Ive been trying to create a gui using an array and a counter.

The results I get are not expected by me, so I must be doing something wrong.

The simple gui will have 20 lables named 0-19, That works fine.

I expected the Array colums to contain the same data, 0 - 19, Wrong it contains 3 - 23

I cannot figure out why, but my guess is Im using ByRef incorrectly.

Any pointers to my problem, and/or bad habits in my code would be welcomed please.

#include <Array.au3>
#include <Guiconstants.au3>

Global $aGuiData[20]

Func _GuiCreate(ByRef $aGuiData)
$Gui = GUICreate("Test",400,400,500,100)
Local $a = 0
For $i = 5 To 290 Step 15
    $aGuiData[$a] = GUICtrlCreateLabel($a,5,$i,390,20)
    $a += 1
Next
GUISetState()
EndFunc

_GuiCreate($aGuiData)
_ArrayDisplay($aGuiData)

while 1
    Sleep(50)
    $msg = GUIGetMsg()
        Select
            Case $msg = $GUI_EVENT_CLOSE
        
                Exit
    EndSelect
Wend

Edited February 8, 2010 by JohnOne

[Melba23]

JohnOne,

You are setting the array elements to the ControlIDs of the labels. There are the internal numbers which AutoIt uses to keep track of the controls it creates. For reasons too complicated to go into here, these start at 3 - hence your array starts from 3.

These ControlIDs are what Autoit looks for in a GUIGetMsg loop and what you use to identify controls in many AutoIt commands.

Questions?

M23

[JohnOne]

Thanks for the explaination Melba23, I had in in my head that they would just be 0 to 19 as displayed in the _ArrayDisplay().

I was looking for a minimalistic way to assign $variables to the control IDs for later use, without typing them all out.

Got My eye wiped eh.

Thanks again Mate.

Edit:

what threw me was first I was using a MsgBox() to display $aGuiData[19], and its output was what I expected .. 19. (after having read the label I mean)

wierd.

Edited February 8, 2010 by JohnOne

[Melba23]

JohnOne,

No, it is not wierd - it is exactly what should happen!

Think about it - you have set the [19] element of the array to the ControlID of the 19th label. So when you use

GUICtrlRead($aArray[19])

you are reading the control whose ControlID is in the [19] element - which is the 19th label. It matters little to you that the actual value of the [19] element is 22 (or whatever!). This is the clever bit about using the ControlIDs - as long as you know the variables in which you have stored them, the actual values are transparent to the user.

I hope that explains it better - do ask if not. That is why we are here after all!

M23

[JohnOne]

Yep, I think I get it.

Although I wish I had'nt used arrydisplay for testing now, cause its just something else Im thinking about while figuring out my script.

Appreciate the help mucker, you're like a knight in shining armour.