Web8 de set. de 2012 · 那么OnPaint()和OnPrint()难道只调用OnDraw来实际动作，还要这连个函数干吗呢，不如直接用OnDraw不就完了吗？ 实际情况并非如此，分析如下： 1OnPaint（）方法在调用OnDraw方法向显示器输出之前需要做大量的准备工作，其中之一就是准备一个跟显示器相关的DC对象，并把此对象传递给OnDraw方法，让其用此 ... http://www.onpointapps.com/

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Onprint

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