Listbox with colored lines
Colored lines in listbox are more user-friendly and easy to read. Here is how to do it…
First of all, place ListBox component on a form and set Style property to lbOwnerDrawFixed. The rest is simple:
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unit Unit1; interface uses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs, ComCtrls, StdCtrls; type TForm1 = class(TForm) ListBox1: TListBox; Button1: TButton; procedure FormCreate(Sender: TObject); procedure ListBox1DrawItem(Control: TWinControl; Index: Integer; Rect: TRect; State: TOwnerDrawState); procedure Button1Click(Sender: TObject); private { Private declarations } public { Public declarations } end; var Form1: TForm1; implementation {$R *.dfm} procedure TForm1.FormCreate(Sender: TObject); begin ListBox1.Style := lbOwnerDrawFixed; end; procedure TForm1.ListBox1DrawItem(Control: TWinControl; Index: Integer; Rect: TRect; State: TOwnerDrawState); begin with Control as TListBox do begin Canvas.FillRect(Rect); Canvas.Font.Color := TColor(Items.Objects[Index]); Canvas.TextOut(Rect.Left + 2, Rect.Top, Items[Index]); end; end; procedure TForm1.Button1Click(Sender: TObject); begin ListBox1.Items.AddObject('Red line', Pointer(clRed)); ListBox1.Items.AddObject('Green line', Pointer(clGreen)); end; end. |