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Delphi与DirectX之DelphiX（18）：TDXDraw中描绘图片的命令2010-01-27 博客园 万一前面的绘图命令都是来自TDXImageList,

准确地说是来自TDXImageList.Items 所包含的TPictureCollectionItem对象.

那TDXDraw本身有没有绘图命令呢？

TDXDraw本身没有绘图命令, 但它的有绘图表面（TDirectDrawSurface）, 譬如: Surface、Primary;

TDXDraw的绘图表面有更多的绘图命令, 另外TDXDraw可以多个绘图表面.

TDirectDrawSurface的绘图命令和 TPictureCollectionItem的绘图命令最大的区别是它们的图像来源;

TDirectDrawSurface的图像来源必须是另一个已绘制好的TDirectDrawSurface 对象.

这里列举的只是TDirectDrawSurface和TPictureCollectionItem 类似的描绘图片的命令:
TDirectDrawSurface.Draw（）;
TDirectDrawSurface.StretchDraw（）;
TDirectDrawSurface.DrawAdd（）;
TDirectDrawSurface.DrawAlpha（）;
TDirectDrawSurface.DrawSub（）;
TDirectDrawSurface.DrawAddCol（）;
TDirectDrawSurface.DrawAlphaCol（）;
TDirectDrawSurface.DrawSubCol（）;
TDirectDrawSurface.DrawRotate（）;
TDirectDrawSurface.DrawRotateAdd（）;
TDirectDrawSurface.DrawRotateAdd（）;
TDirectDrawSurface.DrawRotateAlpha（）;
TDirectDrawSurface.DrawRotateSub（）;
TDirectDrawSurface.DrawRotateAddCol（）;
TDirectDrawSurface.DrawRotateAlphaCol（）;
TDirectDrawSurface.DrawRotateCol（）;
TDirectDrawSurface.DrawRotateSubCol（）;
TDirectDrawSurface.DrawWaveX（）;
TDirectDrawSurface.DrawWaveXAdd（）;
TDirectDrawSurface.DrawWaveXAlpha（）;
TDirectDrawSurface.DrawWaveXSub（）;
TDirectDrawSurface.DrawWaveY（）;
TDirectDrawSurface.DrawWaveYAdd（）;
TDirectDrawSurface.DrawWaveYAlpha（）;
TDirectDrawSurface.DrawWaveYSub（）;

本例效果图: