说明：  C++多显示器管理，检测显示器的个数，获取每个显示器的分辨器、像素位数、顶点坐标、刷新频率、矩形范围等属性，支持窗口在任一显示器中全屏和居中，两个窗口在多显示器中切换.
(C++ multi-monitor management, monitoring monitors the number of the resolution for each display device, the median pixel, vertex coordinates, refresh rate, rectangle and other attributes to support any display window in full screen and centered, two windows on multiple monitors switch)