创建一个windows窗口程序,含有4个菜单项,分别用来创建和撤消记事本进程和计算器进程。若相应进程已经创建了,再选择创建进程菜单,则弹出对话框提示进程已经创建 若进程已经撤消了,再选择撤消进程菜单,则弹出对话框提示进程已经撤消。注意考虑从主程序外部启动和关闭进程的情况。-Create a windows window procedure, contains four menu items, were used to create and undo the Notepad process, an