protected virtual unsafe IntPtr WndProc(IntPtr hWnd, uint msg, IntPtr wParam, IntPtr lParam) { bool unicode = UnmanagedMethods.IsWindowUnicode(hWnd); const double wheelDelta = 120.0; uint timestamp = unchecked ((uint)UnmanagedMethods.GetMessageTime()); RawInputEventArgs e = null; switch ((UnmanagedMethods.WindowsMessage)msg) { case UnmanagedMethods.WindowsMessage.WM_ACTIVATE: var wa = (UnmanagedMethods.WindowActivate)(ToInt32(wParam) & 0xffff); switch (wa) { case UnmanagedMethods.WindowActivate.WA_ACTIVE: case UnmanagedMethods.WindowActivate.WA_CLICKACTIVE: Activated?.Invoke(); break; case UnmanagedMethods.WindowActivate.WA_INACTIVE: Deactivated?.Invoke(); break; } return(IntPtr.Zero); case WindowsMessage.WM_NCCALCSIZE: if (ToInt32(wParam) == 1 && !_decorated) { return(IntPtr.Zero); } break; case UnmanagedMethods.WindowsMessage.WM_CLOSE: bool?preventClosing = Closing?.Invoke(); if (preventClosing == true) { return(IntPtr.Zero); } break; case UnmanagedMethods.WindowsMessage.WM_DESTROY: //Window doesn't exist anymore _hwnd = IntPtr.Zero; //Remove root reference to this class, so unmanaged delegate can be collected s_instances.Remove(this); Closed?.Invoke(); if (_parent != null) { _parent._disabledBy.Remove(this); _parent.UpdateEnabled(); } _mouseDevice.Dispose(); _touchDevice?.Dispose(); //Free other resources Dispose(); return(IntPtr.Zero); case UnmanagedMethods.WindowsMessage.WM_DPICHANGED: var dpi = ToInt32(wParam) & 0xffff; var newDisplayRect = Marshal.PtrToStructure <UnmanagedMethods.RECT>(lParam); _scaling = dpi / 96.0; ScalingChanged?.Invoke(_scaling); SetWindowPos(hWnd, IntPtr.Zero, newDisplayRect.left, newDisplayRect.top, newDisplayRect.right - newDisplayRect.left, newDisplayRect.bottom - newDisplayRect.top, SetWindowPosFlags.SWP_NOZORDER | SetWindowPosFlags.SWP_NOACTIVATE); return(IntPtr.Zero); case UnmanagedMethods.WindowsMessage.WM_KEYDOWN: case UnmanagedMethods.WindowsMessage.WM_SYSKEYDOWN: e = new RawKeyEventArgs( WindowsKeyboardDevice.Instance, timestamp, _owner, RawKeyEventType.KeyDown, KeyInterop.KeyFromVirtualKey(ToInt32(wParam)), WindowsKeyboardDevice.Instance.Modifiers); break; case UnmanagedMethods.WindowsMessage.WM_MENUCHAR: // mute the system beep return((IntPtr)((Int32)UnmanagedMethods.MenuCharParam.MNC_CLOSE << 16)); case UnmanagedMethods.WindowsMessage.WM_KEYUP: case UnmanagedMethods.WindowsMessage.WM_SYSKEYUP: e = new RawKeyEventArgs( WindowsKeyboardDevice.Instance, timestamp, _owner, RawKeyEventType.KeyUp, KeyInterop.KeyFromVirtualKey(ToInt32(wParam)), WindowsKeyboardDevice.Instance.Modifiers); break; case UnmanagedMethods.WindowsMessage.WM_CHAR: // Ignore control chars if (ToInt32(wParam) >= 32) { e = new RawTextInputEventArgs(WindowsKeyboardDevice.Instance, timestamp, _owner, new string((char)ToInt32(wParam), 1)); } break; case UnmanagedMethods.WindowsMessage.WM_LBUTTONDOWN: case UnmanagedMethods.WindowsMessage.WM_RBUTTONDOWN: case UnmanagedMethods.WindowsMessage.WM_MBUTTONDOWN: if (ShouldIgnoreTouchEmulatedMessage()) { break; } e = new RawPointerEventArgs( _mouseDevice, timestamp, _owner, msg == (int)UnmanagedMethods.WindowsMessage.WM_LBUTTONDOWN ? RawPointerEventType.LeftButtonDown : msg == (int)UnmanagedMethods.WindowsMessage.WM_RBUTTONDOWN ? RawPointerEventType.RightButtonDown : RawPointerEventType.MiddleButtonDown, DipFromLParam(lParam), GetMouseModifiers(wParam)); break; case UnmanagedMethods.WindowsMessage.WM_LBUTTONUP: case UnmanagedMethods.WindowsMessage.WM_RBUTTONUP: case UnmanagedMethods.WindowsMessage.WM_MBUTTONUP: if (ShouldIgnoreTouchEmulatedMessage()) { break; } e = new RawPointerEventArgs( _mouseDevice, timestamp, _owner, msg == (int)UnmanagedMethods.WindowsMessage.WM_LBUTTONUP ? RawPointerEventType.LeftButtonUp : msg == (int)UnmanagedMethods.WindowsMessage.WM_RBUTTONUP ? RawPointerEventType.RightButtonUp : RawPointerEventType.MiddleButtonUp, DipFromLParam(lParam), GetMouseModifiers(wParam)); break; case UnmanagedMethods.WindowsMessage.WM_MOUSEMOVE: if (ShouldIgnoreTouchEmulatedMessage()) { break; } if (!_trackingMouse) { var tm = new UnmanagedMethods.TRACKMOUSEEVENT { cbSize = Marshal.SizeOf <UnmanagedMethods.TRACKMOUSEEVENT>(), dwFlags = 2, hwndTrack = _hwnd, dwHoverTime = 0, }; UnmanagedMethods.TrackMouseEvent(ref tm); } e = new RawPointerEventArgs( _mouseDevice, timestamp, _owner, RawPointerEventType.Move, DipFromLParam(lParam), GetMouseModifiers(wParam)); break; case UnmanagedMethods.WindowsMessage.WM_MOUSEWHEEL: e = new RawMouseWheelEventArgs( _mouseDevice, timestamp, _owner, PointToClient(PointFromLParam(lParam)), new Vector(0, (ToInt32(wParam) >> 16) / wheelDelta), GetMouseModifiers(wParam)); break; case UnmanagedMethods.WindowsMessage.WM_MOUSEHWHEEL: e = new RawMouseWheelEventArgs( _mouseDevice, timestamp, _owner, PointToClient(PointFromLParam(lParam)), new Vector(-(ToInt32(wParam) >> 16) / wheelDelta, 0), GetMouseModifiers(wParam)); break; case UnmanagedMethods.WindowsMessage.WM_MOUSELEAVE: _trackingMouse = false; e = new RawPointerEventArgs( _mouseDevice, timestamp, _owner, RawPointerEventType.LeaveWindow, new Point(-1, -1), WindowsKeyboardDevice.Instance.Modifiers); break; case UnmanagedMethods.WindowsMessage.WM_NCLBUTTONDOWN: case UnmanagedMethods.WindowsMessage.WM_NCRBUTTONDOWN: case UnmanagedMethods.WindowsMessage.WM_NCMBUTTONDOWN: e = new RawPointerEventArgs( _mouseDevice, timestamp, _owner, msg == (int)UnmanagedMethods.WindowsMessage.WM_NCLBUTTONDOWN ? RawPointerEventType.NonClientLeftButtonDown : msg == (int)UnmanagedMethods.WindowsMessage.WM_NCRBUTTONDOWN ? RawPointerEventType.RightButtonDown : RawPointerEventType.MiddleButtonDown, PointToClient(PointFromLParam(lParam)), GetMouseModifiers(wParam)); break; case WindowsMessage.WM_TOUCH: var touchInputCount = wParam.ToInt32(); var pTouchInputs = stackalloc TOUCHINPUT[touchInputCount]; var touchInputs = new Span <TOUCHINPUT>(pTouchInputs, touchInputCount); if (GetTouchInputInfo(lParam, (uint)touchInputCount, pTouchInputs, Marshal.SizeOf <TOUCHINPUT>())) { foreach (var touchInput in touchInputs) { Input?.Invoke(new RawTouchEventArgs(_touchDevice, touchInput.Time, _owner, touchInput.Flags.HasFlagCustom(TouchInputFlags.TOUCHEVENTF_UP) ? RawPointerEventType.TouchEnd : touchInput.Flags.HasFlagCustom(TouchInputFlags.TOUCHEVENTF_DOWN) ? RawPointerEventType.TouchBegin : RawPointerEventType.TouchUpdate, PointToClient(new PixelPoint(touchInput.X / 100, touchInput.Y / 100)), WindowsKeyboardDevice.Instance.Modifiers, touchInput.Id)); } CloseTouchInputHandle(lParam); return(IntPtr.Zero); } break; case WindowsMessage.WM_NCPAINT: if (!_decorated) { return(IntPtr.Zero); } break; case WindowsMessage.WM_NCACTIVATE: if (!_decorated) { return(new IntPtr(1)); } break; case UnmanagedMethods.WindowsMessage.WM_PAINT: using (_rendererLock.Lock()) { UnmanagedMethods.PAINTSTRUCT ps; if (UnmanagedMethods.BeginPaint(_hwnd, out ps) != IntPtr.Zero) { var f = Scaling; var r = ps.rcPaint; Paint?.Invoke(new Rect(r.left / f, r.top / f, (r.right - r.left) / f, (r.bottom - r.top) / f)); UnmanagedMethods.EndPaint(_hwnd, ref ps); } } return(IntPtr.Zero); case UnmanagedMethods.WindowsMessage.WM_SIZE: using (_rendererLock.Lock()) { // Do nothing here, just block until the pending frame render is completed on the render thread } var size = (UnmanagedMethods.SizeCommand)wParam; if (Resized != null && (size == UnmanagedMethods.SizeCommand.Restored || size == UnmanagedMethods.SizeCommand.Maximized)) { var clientSize = new Size(ToInt32(lParam) & 0xffff, ToInt32(lParam) >> 16); Resized(clientSize / Scaling); } var windowState = size == SizeCommand.Maximized ? WindowState.Maximized : (size == SizeCommand.Minimized ? WindowState.Minimized : WindowState.Normal); if (windowState != _lastWindowState) { _lastWindowState = windowState; WindowStateChanged?.Invoke(windowState); } return(IntPtr.Zero); case UnmanagedMethods.WindowsMessage.WM_MOVE: PositionChanged?.Invoke(new PixelPoint((short)(ToInt32(lParam) & 0xffff), (short)(ToInt32(lParam) >> 16))); return(IntPtr.Zero); case UnmanagedMethods.WindowsMessage.WM_GETMINMAXINFO: MINMAXINFO mmi = Marshal.PtrToStructure <UnmanagedMethods.MINMAXINFO>(lParam); if (_minSize.Width > 0) { mmi.ptMinTrackSize.X = (int)((_minSize.Width * Scaling) + BorderThickness.Left + BorderThickness.Right); } if (_minSize.Height > 0) { mmi.ptMinTrackSize.Y = (int)((_minSize.Height * Scaling) + BorderThickness.Top + BorderThickness.Bottom); } if (!Double.IsInfinity(_maxSize.Width) && _maxSize.Width > 0) { mmi.ptMaxTrackSize.X = (int)((_maxSize.Width * Scaling) + BorderThickness.Left + BorderThickness.Right); } if (!Double.IsInfinity(_maxSize.Height) && _maxSize.Height > 0) { mmi.ptMaxTrackSize.Y = (int)((_maxSize.Height * Scaling) + BorderThickness.Top + BorderThickness.Bottom); } Marshal.StructureToPtr(mmi, lParam, true); return(IntPtr.Zero); case UnmanagedMethods.WindowsMessage.WM_DISPLAYCHANGE: (Screen as ScreenImpl)?.InvalidateScreensCache(); return(IntPtr.Zero); } #if USE_MANAGED_DRAG if (_managedDrag.PreprocessInputEvent(ref e)) { return(UnmanagedMethods.DefWindowProc(hWnd, msg, wParam, lParam)); } #endif if (e != null && Input != null) { Input(e); if (e.Handled) { return(IntPtr.Zero); } } using (_rendererLock.Lock()) return(UnmanagedMethods.DefWindowProc(hWnd, msg, wParam, lParam)); }
protected virtual unsafe IntPtr WndProc(IntPtr hWnd, uint msg, IntPtr wParam, IntPtr lParam) { bool unicode = UnmanagedMethods.IsWindowUnicode(hWnd); const double wheelDelta = 120.0; uint timestamp = unchecked ((uint)UnmanagedMethods.GetMessageTime()); RawInputEventArgs e = null; switch ((UnmanagedMethods.WindowsMessage)msg) { case UnmanagedMethods.WindowsMessage.WM_ACTIVATE: var wa = (UnmanagedMethods.WindowActivate)(ToInt32(wParam) & 0xffff); switch (wa) { case UnmanagedMethods.WindowActivate.WA_ACTIVE: case UnmanagedMethods.WindowActivate.WA_CLICKACTIVE: Activated?.Invoke(); break; case UnmanagedMethods.WindowActivate.WA_INACTIVE: Deactivated?.Invoke(); break; } return(IntPtr.Zero); case WindowsMessage.WM_NCCALCSIZE: if (ToInt32(wParam) == 1 && _decorated != SystemDecorations.Full) { return(IntPtr.Zero); } break; case UnmanagedMethods.WindowsMessage.WM_CLOSE: bool?preventClosing = Closing?.Invoke(); if (preventClosing == true) { return(IntPtr.Zero); } break; case UnmanagedMethods.WindowsMessage.WM_DESTROY: //Window doesn't exist anymore _hwnd = IntPtr.Zero; //Remove root reference to this class, so unmanaged delegate can be collected s_instances.Remove(this); Closed?.Invoke(); if (_parent != null) { _parent._disabledBy.Remove(this); _parent.UpdateEnabled(); } _mouseDevice.Dispose(); _touchDevice?.Dispose(); //Free other resources Dispose(); return(IntPtr.Zero); case UnmanagedMethods.WindowsMessage.WM_DPICHANGED: var dpi = ToInt32(wParam) & 0xffff; var newDisplayRect = Marshal.PtrToStructure <UnmanagedMethods.RECT>(lParam); _scaling = dpi / 96.0; ScalingChanged?.Invoke(_scaling); SetWindowPos(hWnd, IntPtr.Zero, newDisplayRect.left, newDisplayRect.top, newDisplayRect.right - newDisplayRect.left, newDisplayRect.bottom - newDisplayRect.top, SetWindowPosFlags.SWP_NOZORDER | SetWindowPosFlags.SWP_NOACTIVATE); return(IntPtr.Zero); case UnmanagedMethods.WindowsMessage.WM_KEYDOWN: case UnmanagedMethods.WindowsMessage.WM_SYSKEYDOWN: e = new RawKeyEventArgs( WindowsKeyboardDevice.Instance, timestamp, _owner, RawKeyEventType.KeyDown, KeyInterop.KeyFromVirtualKey(ToInt32(wParam), ToInt32(lParam)), WindowsKeyboardDevice.Instance.Modifiers); break; case UnmanagedMethods.WindowsMessage.WM_MENUCHAR: // mute the system beep return((IntPtr)((Int32)UnmanagedMethods.MenuCharParam.MNC_CLOSE << 16)); case UnmanagedMethods.WindowsMessage.WM_KEYUP: case UnmanagedMethods.WindowsMessage.WM_SYSKEYUP: e = new RawKeyEventArgs( WindowsKeyboardDevice.Instance, timestamp, _owner, RawKeyEventType.KeyUp, KeyInterop.KeyFromVirtualKey(ToInt32(wParam), ToInt32(lParam)), WindowsKeyboardDevice.Instance.Modifiers); break; case UnmanagedMethods.WindowsMessage.WM_CHAR: // Ignore control chars if (ToInt32(wParam) >= 32) { e = new RawTextInputEventArgs(WindowsKeyboardDevice.Instance, timestamp, _owner, new string((char)ToInt32(wParam), 1)); } break; case UnmanagedMethods.WindowsMessage.WM_LBUTTONDOWN: case UnmanagedMethods.WindowsMessage.WM_RBUTTONDOWN: case UnmanagedMethods.WindowsMessage.WM_MBUTTONDOWN: case UnmanagedMethods.WindowsMessage.WM_XBUTTONDOWN: if (ShouldIgnoreTouchEmulatedMessage()) { break; } e = new RawPointerEventArgs( _mouseDevice, timestamp, _owner, (UnmanagedMethods.WindowsMessage)msg switch { UnmanagedMethods.WindowsMessage.WM_LBUTTONDOWN => RawPointerEventType.LeftButtonDown, UnmanagedMethods.WindowsMessage.WM_RBUTTONDOWN => RawPointerEventType.RightButtonDown, UnmanagedMethods.WindowsMessage.WM_MBUTTONDOWN => RawPointerEventType.MiddleButtonDown, UnmanagedMethods.WindowsMessage.WM_XBUTTONDOWN => HighWord(ToInt32(wParam)) == 1 ? RawPointerEventType.XButton1Down : RawPointerEventType.XButton2Down }, DipFromLParam(lParam), GetMouseModifiers(wParam)); break;