手动改变制作窗体的大小。当用户去除窗体边框，自行设定窗体外观时，用户就不能对窗体的大小进行随意改变。本实例将实现如何改变无边窗体的大小-Produced manually change the size of the form. When you remove the window frame, form, set their own appearance, the user can not randomly change the size of the form. This example w