基于mfc的VC++浮动窗口，当浮动窗口接近主窗口边缘时，会自动吸附，可将浮动窗口拖动至主窗口以外的任意地方，程序需要mfc71d.dll，msvcr71d.dll两个文件，网上有下，自己百度一下。-Mfc based VC++ floating window when the main window is a floating window near the edge, it will automatically adsorption can drag the floating window