查看系统所有运行窗口的图标 句柄 类名称并且画出 含有图标的窗口的图标等等,这些都有代码,并且不像控件需要注册才能使用,而想api那样-View all operating systems windows icon handle class name and draw a window containing icons icons, etc., these are code, and unlike the controls need to register to use, and want li