AcrylicUI Window No Border Hack

AcrylicUI_NoBorderHack.cs

    #region Window, No Border Hacks




        protected override void WndProc(ref Message message)
        {
            // Resize Window
            if (message.Msg == WinUserH.WM_NCHITTEST)
            {
                base.WndProc(ref message);

                if (this.WindowState == FormWindowState.Normal)
                {
                    if ((int)message.Result == WinUserH.HT_CLIENT)
                    {
                        var cursor = this.PointToClient(Cursor.Position);
                        WindowPanel.CheckResizeClientAreaHit(this.ClientSize, ref message, cursor);
                    }
                }
                return;
            }

            // Remove border and keep snap window
            if (message.Msg == WinUserH.WM_NCCALCSIZE && message.WParam.ToInt32() == 1)
            {
                return;
            }

            // Keep form size when it is minimized and restored.            
            if (message.Msg == WinUserH.WM_SYSCOMMAND)
            {
                int wParam = (message.WParam.ToInt32() & 0xFFF0);
                if (wParam == WinUserH.SC_MINIMIZE)
                {
                    //save client size
                    _restoreSize = this.ClientSize;
                }
                if (wParam == WinUserH.SC_RESTORE)
                {
                    // restore client size
                    this.Size = _restoreSize;
                }
            }

            base.WndProc(ref message);
        }



        protected override void OnPaintBackground(PaintEventArgs e)
        {
            base.OnPaintBackground(e);

            if (!_flatBorder)
                return;

         /*   var g = e.Graphics;

            using (var p = new Pen(Colors.DarkBorder))
            {
                var modRect = new Rectangle(ClientRectangle.Location, new Size(ClientRectangle.Width - 1, ClientRectangle.Height - 1));
                g.DrawRectangle(p, modRect);
            }
          */
        }

        [DllImport("user32.dll")]
        private static extern uint GetDpiForWindow(IntPtr hwnd);

        /// <summary>
        /// Add DropShadow to top level windows
        /// </summary>
        protected override CreateParams CreateParams
        {
            get
            {
                const int CS_DROPSHADOW = 0x20000;
                CreateParams cp = base.CreateParams;
                cp.ClassStyle |= CS_DROPSHADOW;
                return cp;
            }
        }


        #endregion