DesktopHelper.UI.AdapterForm.WndProc C# (CSharp) Метод

        protected override void WndProc(ref Message m)
        {
            try
            {
                if (m.Msg == uCallBackMsg)
                {
                    switch (m.WParam.ToInt32())
                    {
                        case (int)ABNotify.ABN_FULLSCREENAPP:
                            {
                                if ((int)m.LParam == 1)
                                {
                                    this.RunningFullScreenApp = true;
                                    this.TopMost = false;
                                }
                                else
                                {
                                    this.RunningFullScreenApp = false;
                                    this.TopMost = true;
                                }
                                break;
                            }
                        default:
                            break;
                    }
                }
                switch (m.Msg)
                {
                    case 0X46: //WM_WINDOWPOSCHANGING
                        WINDOWPOS windowPos = (WINDOWPOS)m.GetLParam(typeof(WINDOWPOS));

                        if (windowPos.x + windowPos.cx > rectangle_Screen.Right)
                        {
                            windowPos.x = rectangle_Screen.Right - windowPos.cx;
                        }

                        if (windowPos.y + windowPos.cy > rectangle_Screen.Bottom)
                        {
                            windowPos.y = rectangle_Screen.Bottom - windowPos.cy;
                        }

                        if (windowPos.x < rectangle_Screen.Top)
                        {
                            windowPos.x = rectangle_Screen.Top;
                        }

                        if (windowPos.y < rectangle_Screen.Left)
                        {
                            windowPos.y = 0;
                        }

                        Marshal.StructureToPtr(windowPos, m.LParam, false);
                        base.WndProc(ref m);
                        break;
                    default:
                        base.WndProc(ref m);
                        break;
                }
            }
            catch (Exception ex)
            {
                log.WriteLog(ex.ToString());
            }
        }