我正在使用Delphi XE-3。 我希望更改为核对表框中单个项目的颜色或字体。 这可能吗?
答案 0 :(得分:11)
您需要使用所有者绘图作为核对清单框。将检查列表框的Style
属性设置为lbOwnerDrawFixed
,并为OnDrawItem
事件编写处理程序。在此事件处理程序中,您可以使用以下内容:
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;
以上是上例的结果: