高效率的双缓存的实现，通过内存DC和裁剪区域来提升界面绘制效率，可解决闪屏的问题。-Efficient dual caching to achieve, through the memory DC and draw the crop area to improve the efficiency of the interface, splash screen to resolve the issue.

在实现画图的过程中，出现闪屏的问题。这里提供双缓存来解决-In the realization of the process of drawing, the splash screen appears. Here the double buffer

双缓冲打印以及可以复用的模板。一对比你就知道如何写了-Double buffering print and can reuse templates. A comparison of you know how to write a