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unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, ExtCtrls, StdCtrls;
type
TForm1 = class(TForm)
procedure FormCreate(Sender: TObject);
procedure FormShow(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
var led:array[0..255]of TPanel;
image1:Timage;
procedure TForm1.FormCreate(Sender: TObject);
var i:integer;
begin
//设置窗体:
Height:=200;
Width:=250;
Color:=cl3DDkShadow;
Position:=poScreenCenter;
//生成图像控件,并按拉伸显示:
image1:=Timage.Create(self);
image1.Parent:=Form1;
image1.Left:=23;
image1.Top:=30;
image1.Height:=56;
image1.Width:=56;
image1.Stretch:=true;
//用 TPanel 仿一个 16*16 点阵的 led 显示屏:
for i:=0 to 255 do begin
led[i]:=TPanel.Create(self);
led[i].Parent:=Form1;
led[i].BevelOuter:=bvNone;
led[i].Width:=6;
led[i].Height:=6;
led[i].Top:=i div 16 * 7 +30;
led[i].Left:=i mod 16 * 7 + 100;
led[i].Color:=clWindowText;
end;
end;
procedure TForm1.FormShow(Sender: TObject);
const
ledWidth=16;
filestr='424DF600000000000000360000002800'
+'00000800000008000000010018000000'
+'0000C000000000000000000000000000'
+'0000000000000000FF0000FF0000FF00'
+'00FF0000FF0000FF0000FF0000FF0000'
+'FFC4C4C4C4C4C4C4C4C4C4C4C4C4C4C4'
+'C4C4C40000FF0000FFC4C4C4C4C4C4C4'
+'C4C4C4C4C4C4C4C4C4C4C40000FF0000'
+'FFC4C4C4C4C4C4C4C4C4C4C4C4C4C4C4'
+'C4C4C40000FF0000FFC4C4C4C4C4C4C4'
+'C4C4C4C4C4C4C4C4C4C4C40000FF0000'
+'FFC4C4C4C4C4C4C4C4C4C4C4C4C4C4C4'
+'C4C4C40000FF0000FFC4C4C4C4C4C4C4'
+'C4C4C4C4C4C4C4C4C4C4C40000FF0000'
+'FF0000FF0000FF0000FF0000FF0000FF'
+'0000FF0000FF';//图片内容,来自http://wendang.baidu.com/view/b7882721192e45361066f5b6.html举的例
var ms: TMemoryStream;
index,i:integer;
Width,start,a,b,c,y:byte;
begin
ms:= TMemoryStream.Create;
try //将图片内容写入流(如果是从文件直接加载,可免去此段代码):
//根据文件大小,定义流的长度:
ms.SetSize($F6);//图片最后一个像素的偏移值为$F5,所以,文件的长度就是$F6了
i:=1;
while i<=$F6*2 do begin
y:=strtoint('$'+filestr[i]+filestr[i+1]);
ms.Write(y,1);
inc(i,2);
end;
// ms.LoadFromFile('c:\test.bmp');//从文件直接加载图片
ms.Position:=0;
image1.Picture.Bitmap.LoadFromStream(ms);//将图片加载到 image1
//读取像素点的开始位置:
ms.Position:=$0A;
ms.Read(start,1);
//读取图像宽度:
ms.Position:=$12;
ms.Read(Width,1);
index:=0;//像素点索引为 0 ,即从第一个像素点开始显示
ms.Position:=start;//将内存流指针移到图像的第一个像素点的位置
while ms.Position < ms.Size do begin //从第一个像素起,读取每个像素的颜色值
ms.Read(a,1);//蓝
ms.Read(b,1);//绿
ms.Read(c,1);//红
led[index].Color:=a*$10000+b*$100+c;//将读取到的颜色赋值给显示像素点
inc(index);//显示像素索引递增一
if index mod Width = 0 then index := index + ledWidth - Width;//按图像宽度对应显示像素点
end;
finally
ms.Free;
end;
end;
end.