在屏幕上实时输出你当前窗体的类名，标题，已经窗体坐标宽度，使用到了textout,getwindowsrect,等函数，可以当工具使用，也可以当做学习材料。-Real-time output on the screen of your current form' s class name, title, already form coordinate width, use textout, getwindowsrect, and other functions, can be a tool to use, also can be used as learning materials.