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

本例效果图:

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代码文件:

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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.