源程序如下:
unit ListViewMain;
interface
uses Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs, ComCtrls, ImgList; type TForm1 = class(TForm) ListView1: TListView; ImageList1: TImageList; procedure ListView1CustomDraw(Sender: TCustomListView; const ARect: TRect; var DefaultDraw: Boolean); procedure FormCreate(Sender: TObject); procedure FormClose(Sender: TObject; var Action: TCloseAction); private { Private declarations } public { Public declarations } end; var Form1: TForm1; Bitmap1: TBitmap; implementation {$R *.DFM}
procedure TForm1.ListView1CustomDraw(Sender: TCustomListView; const ARect: TRect; var DefaultDraw: Boolean); var x,y,w,h : LongInt; begin with Bitmap1 do begin W := Width; H := Height; end; Y := 0; while Y < Height do begin X := 0; while X < Width do begin ListView1.Canvas.Draw(X, Y, Bitmap1); Inc(X, W); end; Inc(Y, H); end; end;
procedure TForm1.FormCreate(Sender: TObject); begin Bitmap1 := TBitmap.Create; Bitmap1.LoadFromFile('backgray.bmp'); end;
procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction); begin Bitmap1.Free; end;
end.
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