Mouse示例程序演示了如何截取和响应鼠标消息。运行这个程序，就会显示一个主窗口。最初窗口是空白的，但是直接在窗口中移动鼠标，WM_MOUSEMOVE消息就会出现在窗口上，同时显示鼠标的坐标。-Mouse sample program demonstrates how to respond to the interception and mouse information. Run this program, it will display a main window. Initially the window is empty, but directly in the window, move the mouse, WM_MOUSEMOVE message will appear in the window, at the same time shows the coordinates of the mouse.