System.Windows.Forms.XplatUICarbon.SetWindowPos C# (CSharp) Method

		internal override void SetWindowPos(IntPtr handle, int x, int y, int width, int height) {
			Hwnd hwnd = Hwnd.ObjectFromHandle (handle);

			if (hwnd == null) {
				return;
			}

			// Win32 automatically changes negative width/height to 0.
			if (width < 0)
				width = 0;
			if (height < 0)
				height = 0;
				
			// X requires a sanity check for width & height; otherwise it dies
			if (hwnd.zero_sized && width > 0 && height > 0) {
				if (hwnd.visible) {
					HIViewSetVisible(hwnd.WholeWindow, true);
				}
				hwnd.zero_sized = false;
			}

			if ((width < 1) || (height < 1)) {
				hwnd.zero_sized = true;
				HIViewSetVisible(hwnd.WholeWindow, false);
			}

			// Save a server roundtrip (and prevent a feedback loop)
			if ((hwnd.x == x) && (hwnd.y == y) && (hwnd.width == width) && (hwnd.height == height)) {
				return;
			}

			if (!hwnd.zero_sized) {
				hwnd.x = x;
				hwnd.y = y;
				hwnd.width = width;
				hwnd.height = height;
				SendMessage(hwnd.client_window, Msg.WM_WINDOWPOSCHANGED, IntPtr.Zero, IntPtr.Zero);

				Control ctrl = Control.FromHandle (handle);
				CreateParams cp = ctrl.GetCreateParams ();
				Size TranslatedSize = TranslateWindowSizeToQuartzWindowSize (cp, new Size (width, height));
				Carbon.Rect rect = new Carbon.Rect ();

				if (WindowMapping [hwnd.Handle] != null) {
					if (StyleSet (cp.Style, WindowStyles.WS_POPUP)) {
						SetRect (ref rect, (short)x, (short)y, (short)(x+TranslatedSize.Width), (short)(y+TranslatedSize.Height));
					} else {
						SetRect (ref rect, (short)x, (short)(y+MenuBarHeight), (short)(x+TranslatedSize.Width), (short)(y+MenuBarHeight+TranslatedSize.Height));
					}
					SetWindowBounds ((IntPtr) WindowMapping [hwnd.Handle], 33, ref rect);
					Carbon.HIRect frame_rect = new Carbon.HIRect (0, 0, TranslatedSize.Width, TranslatedSize.Height);
					HIViewSetFrame (hwnd.whole_window, ref frame_rect);
					SetCaretPos (Caret.Hwnd, Caret.X, Caret.Y);
				} else {
					Carbon.HIRect frame_rect = new Carbon.HIRect (x, y, TranslatedSize.Width, TranslatedSize.Height);
					HIViewSetFrame (hwnd.whole_window, ref frame_rect);
				}
				PerformNCCalc(hwnd);
			}

			hwnd.x = x;
			hwnd.y = y;
			hwnd.width = width;
			hwnd.height = height;
		}