如何实现一张图片覆盖窗体 - 回复 "客栈老人" 的问题

问题来源: http://www.cnblogs.com/del/archive/2008/11/25/1339604.html#1381839

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方法1: 用 TImage

---

unit Unit1;



interface



uses

  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,

  Dialogs, ExtCtrls;



type

  TForm1 = class(TForm)

    Image1: TImage;

    procedure FormCreate(Sender: TObject);

  end;



var

  Form1: TForm1;



implementation



{$R *.dfm}



procedure TForm1.FormCreate(Sender: TObject);

begin

  Image1.Align := alClient;

  Image1.Stretch := True;

  Image1.Picture.LoadFromFile('c:\temp\test.bmp');

  {其实不用代码, 在设计时设置一下也可以}

  {也可以用 Image1.Picture.Bitmap.LoadFromResourceName() 从资源文件调入}

end;



end.


 
   

方法 2: 用 TBitmap

---

unit Unit1;



interface



uses

  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,

  Dialogs;



type

  TForm1 = class(TForm)

    procedure FormCreate(Sender: TObject);

    procedure FormDestroy(Sender: TObject);

    procedure FormPaint(Sender: TObject);

  end;



var

  Form1: TForm1;



implementation



{$R *.dfm}



var

  bit: TBitmap;



procedure TForm1.FormCreate(Sender: TObject);

begin

  bit := TBitmap.Create;

  bit.LoadFromFile('c:\temp\test.bmp');

//  bit.LoadFromResourceName(); //或者从这个命令从资源文件调入

end;



procedure TForm1.FormDestroy(Sender: TObject);

begin

  bit.Free;

end;



procedure TForm1.FormPaint(Sender: TObject);

begin

  Canvas.StretchDraw(ClientRect, bit);

end;



end.