简单的窗口程序，实现窗口、鼠标左键效果、关闭窗口时弹出确定对话框。是要想成为VC++真正的程序员，必须会编的第一个程序（程序来自维新培训）-simple window procedures, window, the left mouse button effect, closing the window when activated determine dialog. VC is truly wants to become programmers, will be an addendum to the resolution procedures (procedures from the Restoration training)