Delphi與DirectX之DelphiX(78): TDIB.AntialiasedLine();

本例效果圖:

代碼文件:

unit Unit1;
interface
uses
　 Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
　 Dialogs, DIB, StdCtrls;
type
　 TForm1 = class(TForm)
　　 DXPaintBox1: TDXPaintBox;
　　 procedure FormCreate(Sender: TObject);
　 end;
var
　 Form1: TForm1;
implementation
{$R *.dfm}
procedure TForm1.FormCreate(Sender: TObject);
const
　 ImgPath1 = 'C:\Temp\DX.jpg';
begin
　 DXPaintBox1.DIB.LoadFromFile(ImgPath1);
　 DXPaintBox1.Width := DXPaintBox1.DIB.Width;
　 DXPaintBox1.Height := DXPaintBox1.DIB.Height;
　 DXPaintBox1.DIB.AntialiasedLine(0, 0, DXPaintBox1.Width, DXPaintBox1.Height, clRed);
　 DXPaintBox1.DIB.AntialiasedLine(0, DXPaintBox1.Height, DXPaintBox1.Width, 0, clRed);
end;
end.