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📁 好书啊!很好哦
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<title>把图片转换为灰度图片                              </title>
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      <td width="621"><a href="http://www.CoDelphi.com"><img src="images/logo.gif" border="0" width="153" height="60"><img src="images/bigbanner.gif" border="0" width="468" height="60"></a></td>
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      <div align="center" class="btitle">把图片转换为灰度图片                              <br>
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      <div align="center"><strong>CoDelphi.com                                      </strong></div>
       
      <b><br>
      　摘　要</b>：如何把图片转换为灰度图片                          <br>
      <b>　关键字</b>：颜色&nbsp灰度&nbsp转换                             <br>
      <b>　类　别</b>：图形                                               
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      <span class="content"><br><br>procedure TForm1.Button1Click(Sender: TObject); <br>var<br>&nbsp;&nbsp;lo:tbitmap;<br>&nbsp;&nbsp;i,j:integer;<br>&nbsp;&nbsp;kl:longint;<br>&nbsp;&nbsp;rr,gg,bb:byte;<br>&nbsp;&nbsp;res:byte; <br>begin<br>&nbsp;&nbsp;lo:=tbitmap.create;<br>&nbsp;&nbsp;lo.Width:=image1.Width;<br>&nbsp;&nbsp;lo.height:=image1.height;<br>&nbsp;&nbsp;ProgressBar1.Max:=image1.Width+1;<br>&nbsp;&nbsp;for i:=0 to image1.Width+1 do<br>&nbsp;&nbsp;begin<br>&nbsp;&nbsp;&nbsp;&nbsp;for j:=0 to image1.height+1 do<br>&nbsp;&nbsp;&nbsp;&nbsp;begin<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;kl:=ColorToRGB(image1.Canvas.Pixels[i,j]);<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;rr:=byte(kl);<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;gg:=byte(kl shr 8);<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;bb:=byte(kl shr 8);<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;res:=(rr+gg+bb) div 3;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;lo.Canvas.Pixels[i,j]:=rgb(res,res,res);<br>&nbsp;&nbsp;&nbsp;&nbsp;end;<br>&nbsp;&nbsp;&nbsp;&nbsp;ProgressBar1.Position:=i;<br>&nbsp;&nbsp;end;//for do<br>&nbsp;&nbsp;image1.Canvas.Draw(0,0,lo);<br>&nbsp;&nbsp;lo.free; <br>end;</span> 
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  中文开发在线<a href="http://www.codelphi.com" target="_blank">www.codelphi.com</a>授权使用。
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