Changing font or color of an specific Checklistbox Item?

delphi

Solution

You will need to use owner drawing on for your check list box. Set the `Style` property of your check list box to `lbOwnerDrawFixed` and write the handler for the `OnDrawItem` event. In this event handler you can use something like this:

procedure TForm1.CheckListBox1DrawItem(Control: TWinControl; Index: Integer;
  Rect: TRect; State: TOwnerDrawState);
var
  Flags: Longint;
begin
  with (Control as TCheckListBox) do
  begin
    // modifying the Canvas.Brush.Color here will adjust the item color
    case Index of
      0: Canvas.Brush.Color := $00F9F9F9;
      1: Canvas.Brush.Color := $00EFEFEF;
      2: Canvas.Brush.Color := $00E5E5E5;
    end;
    Canvas.FillRect(Rect);
    // modifying the Canvas.Font.Color here will adjust the item font color
    case Index of
      0: Canvas.Font.Color := clRed;
      1: Canvas.Font.Color := clGreen;
      2: Canvas.Font.Color := clBlue;
    end;
    Flags := DrawTextBiDiModeFlags(DT_SINGLELINE or DT_VCENTER or DT_NOPREFIX);
    if not UseRightToLeftAlignment then
      Inc(Rect.Left, 2)
    else
      Dec(Rect.Right, 2);
    DrawText(Canvas.Handle, Items[Index], Length(Items[Index]), Rect, Flags);
  end;
end;

Here's the result of the above example:

Problem

I'm using Delphi XE-3. I wish to change to color or font of a single item in an checklistbox. Is this possible?

Original source

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