[Gambas-user] array of object is SO needed

[Rolf-Werner Eilert]

Hi Roberto,

there are arrays of objects in Gambas, and I have been using them for 
quite some time. There is especially one project where I used them very 
similarly: for labels, textboxes and comboboxes in a dynamical mask.

As an example, at the beginning of the class file:

   Private mLbl As New Object[]

This is a small excerpt where a new label is made and set to its position:

       Case "LABEL"
         Inc lblNr
         mLbl.Resize(lblNr + 1)
         mLbl[lblNr] = New Label(Maske) As "MaskeLabel"
         mLbl[lblNr].X = Val(wert[2])
         mLbl[lblNr].Y = Val(wert[3]) + 5 'Gambas 3 Ausgleich nötig
         mLbl[lblNr].Text = wert[4]
         '5 und 6 noch für den Font
         mLbl[lblNr].Width = mLbl[lblNr].Font.TextWidth(mLbl[lblNr].Text)
         mLbl[lblNr].Height = mLbl[lblNr].Font.TextHeight(mLbl[lblNr].Text)

You have to take care to delete the objects backwards (for... step -1):

   For i = mLbl.Count - 1 To 0 Step -1
     mLbl[i].Delete
   Next
   mLbl.Clear

As far as I know, you could even define Arrays of Arrays, for your 
multilayer matrix for instance, to simulate the layers, but I never 
needed that.

Or did I get you completely wrong here?

Regards
Rolf



Am 31.03.2020 um 12:16 schrieb roberto:
> hi.
>
> i am doing a "sudoku" game.
>
> i have a matrix of 81 labels, from "label1" to "label81" as containers 
> of the numbers (to show them to user)
>
> i have matrix to container of number (to "elaborate" them).
>
> To fill the textlabels  i have to do
>
>
> if matrix[1] <> 0 then label1.text=matrix[1]
>
> if matrix[2] <> 0 then label2.text=matrix[2]
>
> ...
>
> if matrix[81] <> 0 then label81.text=matrix[81]
>
>
> also to clean or assign different background color, i have to write 81 
> times the same command on different labels.
>
> it will be HUGE better to have array of objects  to allow some the 
> follow:
>
>
> for n = 1 to 81
>
>  if matrix[n] <> 0 then label[n].text = matrix[n]
>
> next
>
> At my eyes, absence of object arrays is the worsest weakness of gambas.
>
>
> PS: in past i did bigger programs with hundreds of labels and all of 
> them must be worked one by one, it was a mess (doing cut and past and 
> renumbering, it is so common to do a mistake).
>
> Getting older, i became less used to face this weakness.
>
>
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