CDC simple learning tutorial
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Application background How to make CDC on the output of the text, graphics and text, the use of CPtrArray CClientDC, and CPaintDC, and OnPaint in the relationship between OnDraw and CView, Key Technology The realization of the rolling window, coordinate space, mapping method, device coordinates and logical coordinates conversion. The use of the device description table of the meta file, how to use the DC to achieve the preservation and reproduction of graphics..