本例效果圖:
代碼文件:unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls;
type
TForm1 = class(TForm)
ComboBox1: TComboBox;
procedure FormPaint(Sender: TObject);
procedure FormCreate(Sender: TObject);
procedure ComboBox1Change(Sender: TObject);
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
uses GDIPOBJ, GDIPAPI, TypInfo;
procedure TForm1.FormCreate(Sender: TObject);
var
i: Integer;
begin
for i := 0 to 5 do
ComboBox1.Items.Add(GetEnumName(TypeInfo(TTextRenderingHint), i));
ComboBox1.ItemIndex := 0;
end;
procedure TForm1.FormPaint(Sender: TObject);
var
g: TGPGraphics;
b: TGPBrush;
font: TGPFont;
begin
g := TGPGraphics.Create(Canvas.Handle);
b := TGPSolidBrush.Create(aclRed);
font := TGPFont.Create('Arial Black', 150);
g.SetTextRenderingHint(TTextRenderingHint(ComboBox1.ItemIndex));
g.DrawString('@', -1, font, MakePoint(0.0,-40.0), b);
font.Free;
b.Free;
g.Free;
end;
procedure TForm1.ComboBox1Change(Sender: TObject);
begin
Repaint;
end;
end.
