Delphi与DirectX之DelphiX(31)：TDIB.Twist();

本例效果图:

代码文件:

unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, DIB, StdCtrls;
type
TForm1 = class(TForm)
DXPaintBox1: TDXPaintBox;
Button1: TButton;
Button2: TButton;
procedure Button1Click(Sender: TObject);
procedure Button2Click(Sender: TObject);
procedure FormCreate(Sender: TObject);
procedure FormDestroy(Sender: TObject);
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
var
dib: TDIB;
procedure TForm1.Button1Click(Sender: TObject);
const
ImgPath1 = 'C:\Temp\DX.jpg';
begin
dib.LoadFromFile(ImgPath1);
DXPaintBox1.DIB.Assign(dib);
DXPaintBox1.Width := dib.Width;
DXPaintBox1.Height := dib.Height;
DXPaintBox1.Repaint;
end;
procedure TForm1.Button2Click(Sender: TObject);
begin
DXPaintBox1.DIB.Twist(dib, 128);
DXPaintBox1.DIB.Assign(dib);
DXPaintBox1.Repaint;
end;
procedure TForm1.FormCreate(Sender: TObject);
begin
dib := TDIB.Create;
end;
procedure TForm1.FormDestroy(Sender: TObject);
begin
dib.Free;
end;
end.