本文整理自网络，侵删。
combobox和listbox的文字可以右对齐显示么？答案是可以的，但是必须使用ComboBox1DrawItem，自行画内容。
unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls;
type
TForm1 = class(TForm)
ComboBox1: TComboBox;
procedure FormCreate(Sender: TObject);
procedure ComboBox1DrawItem(Control: TWinControl; Index: Integer;
Rect: TRect; State: TOwnerDrawState);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
procedure TForm1.FormCreate(Sender: TObject);
begin
ComboBox1.Style := csOwnerDrawFixed;
end;
procedure TForm1.ComboBox1DrawItem(Control: TWinControl; Index: Integer;
Rect: TRect; State: TOwnerDrawState);
var
x: Integer;
txt: string;
begin
with ComboBox1 do
begin
Canvas.FillRect(Rect); //将combobox用现在的brush填充颜色
txt := Items[Index];
x := Rect.Right - Canvas.TextWidth(txt) - 4;
Canvas.TextOut(x, Rect.Top, txt);
end;
end;
end.
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