本例效果圖:
代碼文件:
unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, DXDraws, StdCtrls;
type
TForm1 = class(TForm)
DXDraw1: TDXDraw;
DXImageList1: TDXImageList;
Button1: TButton;
Button2: TButton;
Button3: TButton;
Button4: TButton;
Button5: TButton;
Button6: TButton;
procedure FormCreate(Sender: TObject);
procedure Button1Click(Sender: TObject);
procedure Button2Click(Sender: TObject);
procedure Button3Click(Sender: TObject);
procedure Button4Click(Sender: TObject);
procedure Button5Click(Sender: TObject);
procedure Button6Click(Sender: TObject);
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
var
PicItem: TPictureCollectionItem;
w,h: Integer;
procedure TForm1.FormCreate(Sender: TObject);
const
ImgPath1 = 'C:TempDelphiX.bmp';
begin
DXImageList1.DXDraw := DXDraw1;
PicItem := TPictureCollectionItem(DXImageList1.Items.Add);
PicItem.Picture.LoadFromFile(ImgPath1);
w := PicItem.Width;
h := PicItem.Height;
end;
procedure TForm1.Button1Click(Sender: TObject);
begin
PicItem.PatternWidth := w;
PicItem.PatternHeight := h;
DXDraw1.Surface.Fill(0);
PicItem.Draw(DXDraw1.Surface, 0, 0, 0);
DXDraw1.Flip;
end;
procedure TForm1.Button2Click(Sender: TObject);
begin
PicItem.PatternWidth := w * 2;
PicItem.PatternHeight := h;
DXDraw1.Surface.Fill(0);
PicItem.Draw(DXDraw1.Surface, 0, 0, 0);
DXDraw1.Flip;
end;
procedure TForm1.Button3Click(Sender: TObject);
begin
PicItem.PatternWidth := w div 2;
PicItem.PatternHeight := h;
DXDraw1.Surface.Fill(0);
PicItem.Draw(DXDraw1.Surface, 0, 0, 0);
DXDraw1.Flip;
end;
procedure TForm1.Button4Click(Sender: TObject);
begin
PicItem.PatternWidth := w;
PicItem.PatternHeight := h * 2;
DXDraw1.Surface.Fill(0);
PicItem.Draw(DXDraw1.Surface, 0, 0, 0);
DXDraw1.Flip;
end;
procedure TForm1.Button5Click(Sender: TObject);
begin
PicItem.PatternWidth := w;
PicItem.PatternHeight := h div 2;
DXDraw1.Surface.Fill(0);
PicItem.Draw(DXDraw1.Surface, 0, 0, 0);
DXDraw1.Flip;
end;
procedure TForm1.Button6Click(Sender: TObject);
begin
PicItem.PatternWidth := w*2;
PicItem.PatternHeight := h*2;
DXDraw1.Surface.Fill(0);
PicItem.Draw(DXDraw1.Surface, 0, 0, 0);
DXDraw1.Flip;
end;
end.
