private void OpenSystemContextMenu(MouseButtonEventArgs e)
{
System.Windows.Point position = e.GetPosition(this);
System.Windows.Point screen = this.PointToScreen(position);
int num = 36;
if (position.Y < (double)num)
{
IntPtr handle = (new WindowInteropHelper(this)).Handle;
IntPtr systemMenu = NativeUtils.GetSystemMenu(handle, false);
if (base.WindowState != WindowState.Maximized)
{
NativeUtils.EnableMenuItem(systemMenu, 61488, 0);
}
else
{
NativeUtils.EnableMenuItem(systemMenu, 61488, 1);
}
int num1 = NativeUtils.TrackPopupMenuEx(systemMenu, NativeUtils.TPM_LEFTALIGN | NativeUtils.TPM_RETURNCMD, Convert.ToInt32(screen.X + 2), Convert.ToInt32(screen.Y + 2), handle, IntPtr.Zero);
if (num1 == 0)
{
return;
}
NativeUtils.PostMessage(handle, 274, new IntPtr(num1), IntPtr.Zero);
}
}