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如何把图片变小保存？

2013-08-16 02:27:17| 分类： delphi xe4 | 标签： |举报 |字号大中小订阅

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DELPHI能否实现向PHOTOSHOP一样修改图象尺寸的功能，请赐教。

var

bmp1, bmp2： TBimap;

begin

Chart1.SaveToBitmapFile(‘C：＼Test.bmp‘);

bmp1 ：= TBitmap.Create;

bmp2 ：= TBitmap.Create;

bmp1.LoadFromFile(‘C：＼Test.bmp‘);

bmp2.Height ：= 600; // 指定新高度

bmp2.Width ：= 800; // 指定新寬度

bmp2.Canvas.StretchDraw(Rect(0, 0, 800, 600), bmp1); // 縮放

bmp2.SaveToFile(‘C：＼Test.bmp‘); // 存回原檔名

bmp2.Free;

bmp1.Free;

end;

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