SRL Archive - OSR Advanced Scripting Tutorials

This is my first tut, so sorry if i didnt explain it clearly.

Ok, so I'm going to teach you how to use tags in forms. So, tags are used in forms for mainly one purpose: to save code. When using .tag it allows you to set multiple TObject's to seperate procedures all within the same ClickButton procedure.

So, here would be the simple, sender: TObject procedure using tags.

procedure clickbutton(sender: tobject);
var
  v: TVariantArray;
begin
  SetArrayLength(V, 0);
  if (Sender is TButton) then
    case (TButton(Sender).tag) of // used like any other case ____ of statement
      -1: begin
            PlayerClicked := true;
            ThreadSafeCall('SetupForm', v);
          end;
      -2: frmDesign.ModalResult := mrOk;
      -3: begin
            frmDesign.ModalResult := mrOk;
            Writeln('Script canceled.');
            //FreeForm(frmDesign);
            TerminateScript;
          end;
      -4: begin
            ColorsClicked := true;
            LoadColorsForm;
          end;
      -5: LoadHelpForm;
      -6: LoadStatsForm;
    end;
end;

So the majority of that code, is made up of Case(TButton(Sender).tag) of, which is just a basic Case..Of statement, which you should probably know how to use.

BUT…
How do you use the .tag variable?? Simple. You declare it like you would declare any other form variable.

PlayersButton.Tag := -1;

And so on… But I'm not going to go into greater detail than that..

Here's part of my form that i took it from. I'm not going to post the whole form though…

PlayersButton := TButton.Create(frmDesign);
PlayersButton.Parent := frmDesign;
PlayersButton.Left := 190;
PlayersButton.Top := 5;
PlayersButton.Width := 75;
PlayersButton.Height := 25;
PlayersButton.Caption := 'Edit Players';
PlayersButton.OnClick := @clickbutton;
PlayersButton.Tag := -1;
PlayersButton.TabOrder := 8;

StartButton := TButton.Create(frmDesign);
StartButton.Parent := frmDesign;
StartButton.Left := 190;
StartButton.Top := 92;
StartButton.Width := 75;
StartButton.Height := 25;
StartButton.Caption := 'Start Script';
StartButton.OnClick := @clickbutton;
StartButton.Tag := -2;
StartButton.TabOrder := 9;

CancelButton := TButton.Create(frmDesign);
CancelButton.Parent := frmDesign;
CancelButton.Left := 190;
CancelButton.Top := 120;
CancelButton.Width := 75;
CancelButton.Height := 25;
CancelButton.Caption := 'Cancel';
CancelButton.OnClick := @clickbutton;
CancelButton.Tag := -3;
CancelButton.TabOrder := 10;

ColorsButton := TButton.Create(frmDesign);
ColorsButton.Parent := frmDesign;
ColorsButton.Left := 190;
ColorsButton.Top := 33;
ColorsButton.Width := 75;
ColorsButton.Height := 25;
ColorsButton.Caption := 'Edit Colors';
ColorsButton.OnClick := @clickbutton;
ColorsButton.Tag := -4;
ColorsButton.TabOrder := 11;

HelpButton := TButton.Create(frmDesign);
HelpButton.Parent := frmDesign;
HelpButton.Left := 190;
HelpButton.Top := 63;
HelpButton.Width := 75;
HelpButton.Height := 25;
HelpButton.Caption := 'Help';
HelpButton.OnClick := @clickbutton;
HelpButton.Tag := -5;
HelpButton.TabOrder := 13;

StatsButton := TButton.Create(frmDesign);
StatsButton.Parent := frmDesign;
StatsButton.Left := 115;
StatsButton.Top := 120;
StatsButton.Width := 75;
StatsButton.Height := 25;
StatsButton.Caption := 'View Stats';
StatsButton.OnClick := @clickbutton;
StatsButton.Tag := -6;
StatsButton.TabOrder := 16;

So, thats about all there is to it. Hope you enjoyed it!

~ itschris917

Whoa thats pretty cool iv never thought of that ill have to try it out thanks.

Interesting. Easier than all those procedures that I make…

^^ Yea I did the same thing before.. @buttonclick. @editplayers. @.. @….. And then i always had to remember what was which and blah blah. Not cool.

Oooh…

Thank you for this :)

No problem. Anyone else like it? ;)

You can just use:

procedure THEEClick(sender: TObject);
begin
  case Sender of
    VarButtonName: DoSomething; 
    VarMemoName: Dosttuf; 
    EditName: dostuuf; 
  end; 
end; 

?

Yea that's essentially what i did also. I only knew how to do it using .tag.

doh.. shouolda thoguth of that sooner