Delphi与DirectX之DelphiX(23)：TDirectDrawSurface.Blur;

本例效果图:

代码文件:

unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, DXDraws, StdCtrls;
type
TForm1 = class(TForm)
DXDraw1: TDXDraw;
Button1: TButton;
Button2: TButton;
Button3: TButton;
procedure Button1Click(Sender: TObject);
procedure Button2Click(Sender: TObject);
procedure Button3Click(Sender: TObject);
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
const
ImgPath1 = 'C:\Temp\DelphiX.bmp';
procedure TForm1.Button1Click(Sender: TObject);
begin
DXDraw1.Surface.Fill(0);
DXDraw1.Surface.LoadFromFile(ImgPath1);
DXDraw1.Flip;
end;
procedure TForm1.Button2Click(Sender: TObject);
begin
DXDraw1.Surface.Fill(0);
DXDraw1.Surface.LoadFromFile(ImgPath1);
DXDraw1.Surface.Lock;
DXDraw1.Surface.Blur;
DXDraw1.Surface.UnLock;
DXDraw1.Flip;
end;
procedure TForm1.Button3Click(Sender: TObject);
begin
with DXDraw1.Surface do begin
Fill(0);
LoadFromFile(ImgPath1);
Lock;
Blur; Blur;
UnLock;
end;
DXDraw1.Flip;
end;
end.