private void WM_NCHITTEST(ref Message m)
{
int wparam = m.LParam.ToInt32();
Point point = new Point(Win32.LOWORD(wparam), Win32.HIWORD(wparam));
point = PointToClient(point);
if (m.Msg != Win32.WM_NCHITTEST)
{
return;
}
if (_IsResize)
{
TaskMenu.DeleteSYSMENU(this);
if (point.X <= 8)
{
if (point.Y <= 8)
{
m.Result = (IntPtr)Win32.HTTOPLEFT;
}
else if (point.Y > Height - 8)
{
m.Result = (IntPtr)Win32.HTBOTTOMLEFT;
}
else
{
m.Result = (IntPtr)Win32.HTLEFT;
}
}
else if (point.X >= Width - 8)
{
if (point.Y <= 8)
{
m.Result = (IntPtr)Win32.HTTOPRIGHT;
}
else if (point.Y >= Height - 8)
{
m.Result = (IntPtr)Win32.HTBOTTOMRIGHT;
}
else
{
m.Result = (IntPtr)Win32.HTRIGHT;
}
}
else if (point.Y <= 8)
{
m.Result = (IntPtr)Win32.HTTOP;
}
else if (point.Y >= Height - 8)
{
m.Result = (IntPtr)Win32.HTBOTTOM;
}
else
{
TaskMenu.AddSYSMENU(this);
m.Result = (IntPtr)Win32.HTCAPTION;
}
//this.Invalidate();
}
else
{
m.Result = (IntPtr)Win32.HTCAPTION;
}
}
//重载WndProc方法
protected override void WndProc(ref Message m)
{
try
{
//渐变相关
if (_UseFadeStyle && m.Msg != Win32.WM_NCPAINT)
{
if (m.Msg == Win32.WM_SYSCOMMAND || m.Msg == Win32.WM_COMMAND)
{
//渐变到0,当最小化时
if (m.WParam == (IntPtr)Win32.SC_MINIMIZE)
{
if (heldMessage.WParam != (IntPtr)Win32.SC_MINIMIZE)
{
heldMessage = m;
TargetOpacity = minimizedOpacity;
}
else
{
heldMessage = new Message();
TargetOpacity = activeOpacity;
}
return;
}
//当任务栏还原时渐变
else if (m.WParam == (IntPtr)Win32.SC_RESTORE &&
this.WindowState == FormWindowState.Minimized)
{
base.WndProc(ref m);
TargetOpacity = activeOpacity;
return;
}
//当窗体关闭时.
else if (m.WParam == (IntPtr)Win32.SC_CLOSE)
{
heldMessage = m;
TargetOpacity = minimizedOpacity;
return;
}
}
}
switch (m.Msg)
{
//窗体客户区以外的重绘消息,一般是由系统负责处理
case Win32.WM_NCPAINT:
break;
// 在需要计算窗口客户区的大小和位置时发送。通过处理这个消息，应用程序可以在窗口大小或位置改变时控制客户区的内容
//case Win32.WM_NCCALCSIZE:
// break;
// 画窗体被激活或者没有被激活时的样子
case Win32.WM_NCACTIVATE:
if (m.WParam == (IntPtr)Win32.WM_FALSE)
{
m.Result = (IntPtr)Win32.WM_TRUE;
}
break;
case Win32.WM_ACTIVATE:
TaskMenu.AddSYSMENU(this);
base.WndProc(ref m);
break;
case Win32.WM_NCLBUTTONDBLCLK:
if (_IsResize)
{
base.WndProc(ref m);
}
break;
//鼠标移动,按下或释放都会执行该消息
case Win32.WM_NCHITTEST:
WM_NCHITTEST(ref m);
break;
default:
base.WndProc(ref m);
break;
}
}
catch (Exception Exception)
{
}
}