C#实现Winform无边框移动的方法

本文实例讲述了c#实现winform无边框移动的方法。分享给大家供大家参考。具体如下：

const int htleft = 10;
const int htright = 11;
const int httop = 12;
const int httopleft = 13;
const int httopright = 14;
const int htbottom = 15;
const int htbottomleft = 0x10;
const int htbottomright = 17;
protected override void wndproc(ref message m)
{
 switch (m.msg)
 {
  case 0x0084:
   base.wndproc(ref m);
   point vpoint = new point((int)m.lparam & 0xffff,
    (int)m.lparam >> 16 & 0xffff);
   vpoint = pointtoclient(vpoint);
   if (vpoint.x <= 5)
    if (vpoint.y <= 5)
     m.result = (intptr)httopleft;
    else if (vpoint.y >= clientsize.height - 5)
     m.result = (intptr)htbottomleft;
    else m.result = (intptr)htleft;
   else if (vpoint.x >= clientsize.width - 5)
    if (vpoint.y <= 5)
     m.result = (intptr)httopright;
    else if (vpoint.y >= clientsize.height - 5)
     m.result = (intptr)htbottomright;
    else m.result = (intptr)htright;
   else if (vpoint.y <= 5)
    m.result = (intptr)httop;
   else if (vpoint.y >= clientsize.height - 5)
    m.result = (intptr)htbottom;
   break;
  case 0x0201://鼠标左键按下的消息 
   m.msg = 0x00a1;//更改消息为非客户区按下鼠标 
   m.lparam = intptr.zero;//默认值 
   m.wparam = new intptr(2);//鼠标放在标题栏内 
   base.wndproc(ref m);
   break;
  default:
   base.wndproc(ref m);
   break;
 }
}

希望本文所述对大家的c#程序设计有所帮助。