此问题由李海回答。 附加关键字：编程, 源程序, programming, source code, C/C++, MFC, C++ Builder, Borland C++, Turbo C, C, BCB, 图形、图象, picture, graph, image, draw。
附加关键字：编程, 源程序, programming, source code, C/C++, MFC, C++ Builder, Borland C++, Turbo C, C, BCB, 图形、图象, picture, graph, image, draw。
BITMAPINFOHEADER 里的biHeight的正负是这么回事
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