使用WPF来创建 Metro UI程序

// Is this a double-click?
if (DateTime.Now.Subtract(m_headerLastClicked) <= s_doubleClick)
{
  // Execute the code inside the event handler for the
  // restore button click passing null for the sender
  // and null for the event args.
  HandleRestoreClick(null, null); } m_headerLastClicked = DateTime.Now; if (Mouse.LeftButton == MouseButtonState.Pressed) { DragMove(); }

Rectangle clickedRectangle = (Rectangle)sender;
   
switch (clickedRectangle.Name)
{
  case "top":
      Cursor = Cursors.SizeNS;
      ResizeWindow(ResizeDirection.Top);
      break;
  case "bottom": Cursor = Cursors.SizeNS; ResizeWindow(ResizeDirection.Bottom); break; // ... }

/// <summary>
/// Resizes the window.
/// </summary> /// <param name="direction">The direction.</param> private void ResizeWindow(ResizeDirection direction) { NativeMethods.SendMessage(m_hwndSource.Handle, WM_SYSCOMMAND, (IntPtr)(61440 + direction), IntPtr.Zero); } [DllImport("user32.dll", CharSet = CharSet.Auto)] internal static extern IntPtr SendMessage( IntPtr hWnd, UInt32 msg, IntPtr wParam, IntPtr lParam);

/// <summary>
/// Raises the <see cref="FrameworkElement.Initialized"/> event. /// This method is invoked whenever /// <see cref="P:FrameworkElement.IsInitialized"/> /// is set to true internally. /// </summary> /// <param name="e">The <see cref="T:RoutedEventArgs"/> /// that contains the event data.</param> protected override void OnInitialized(EventArgs e) { AllowsTransparency = false; ResizeMode = ResizeMode.NoResize; Height = 480; Width = 852; WindowStartupLocation = WindowStartupLocation.CenterScreen; WindowStyle = WindowStyle.None; SourceInitialized += HandleSourceInitialized; base.OnInitialized(e); } /// <summary> /// Handles the source initialized. /// </summary> /// <param name="sender">The sender.</param> /// <param name="e">The <see cref="System.EventArgs"/> /// instance containing the event data.</param> private void HandleSourceInitialized(Object sender, EventArgs e) { m_hwndSource = (HwndSource)PresentationSource.FromVisual(this); // Returns the HwndSource object for the window // which presents WPF content in a Win32 window. HwndSource.FromHwnd(m_hwndSource.Handle).AddHook( new HwndSourceHook(NativeMethods.WindowProc)); // http://msdn.microsoft.com/en-us/library/aa969524(VS.85).aspx Int32 DWMWA_NCRENDERING_POLICY = 2; NativeMethods.DwmSetWindowAttribute( m_hwndSource.Handle, DWMWA_NCRENDERING_POLICY, ref DWMWA_NCRENDERING_POLICY, 4); // http://msdn.microsoft.com/en-us/library/aa969512(VS.85).aspx NativeMethods.ShowShadowUnderWindow(m_hwndSource.Handle); }

/// <summary>
/// Initializes the surrounding windows.
/// </summary> private void InitializeSurrounds() { // Top. m_wndT = CreateTransparentWindow(); // Left. m_wndL = CreateTransparentWindow(); // Bottom. m_wndB = CreateTransparentWindow(); // Right. m_wndR = CreateTransparentWindow(); SetSurroundShadows(); } /// <summary> /// Creates an empty window. /// </summary> /// <returns></returns> private static Window CreateTransparentWindow() { Window wnd = new Window(); wnd.AllowsTransparency = true; wnd.ShowInTaskbar = false; wnd.WindowStyle = WindowStyle.None; wnd.Background = null; return wnd; } /// <summary> /// Sets the artificial drop shadow. /// </summary> /// <param name="active">if set to <c>true</c> [active].</param> private void SetSurroundShadows(Boolean active = true) { if (active) { Double cornerRadius = 1.75; m_wndT.Content = GetDecorator( "Images/ACTIVESHADOWTOP.PNG"); m_wndL.Content = GetDecorator( "Images/ACTIVESHADOWLEFT.PNG", cornerRadius); m_wndB.Content = GetDecorator( "Images/ACTIVESHADOWBOTTOM.PNG"); m_wndR.Content = GetDecorator( "Images/ACTIVESHADOWRIGHT.PNG", cornerRadius); } else { m_wndT.Content = GetDecorator( "Images/INACTIVESHADOWTOP.PNG"); m_wndL.Content = GetDecorator( "Images/INACTIVESHADOWLEFT.PNG"); m_wndB.Content = GetDecorator( "Images/INACTIVESHADOWBOTTOM.PNG"); m_wndR.Content = GetDecorator( "Images/INACTIVESHADOWRIGHT.PNG"); } } [DebuggerStepThrough] private Decorator GetDecorator(String imageUri, Double radius = 0) { Border border = new Border(); border.CornerRadius = new CornerRadius(radius); border.Background = new ImageBrush( new BitmapImage( new Uri(BaseUriHelper.GetBaseUri(this), imageUri))); return border; }

/// <summary>
/// Raises the <see cref="FrameworkElement.Initialized"/> event. /// This method is invoked whenever /// <see cref="FrameworkElement.IsInitialized"/> /// is set to true internally. /// </summary> /// <param name="e">The <see cref="T:RoutedEventArgs"/> /// that contains the event data.</param> protected override void OnInitialized(EventArgs e) { // ... LocationChanged += HandleLocationChanged; SizeChanged += HandleLocationChanged; StateChanged += HandleWndStateChanged; InitializeSurrounds(); ShowSurrounds(); base.OnInitialized(e); } /// <summary> /// Handles the location changed. /// </summary> /// <param name="sender">The sender.</param> /// <param name="e">The <see cref="System.EventArgs"/> /// instance containing the event data.</param> private void HandleLocationChanged(Object sender, EventArgs e) { m_wndT.Left = Left - c_edgeWndSize; m_wndT.Top = Top - m_wndT.Height; m_wndT.Width = Width + c_edgeWndSize * 2; m_wndT.Height = c_edgeWndSize; m_wndL.Left = Left - m_wndL.Width; m_wndL.Top = Top; m_wndL.Width = c_edgeWndSize; m_wndL.Height = Height; m_wndB.Left = Left - c_edgeWndSize; m_wndB.Top = Top + Height; m_wndB.Width = Width + c_edgeWndSize * 2; m_wndB.Height = c_edgeWndSize; m_wndR.Left = Left + Width; m_wndR.Top = Top; m_wndR.Width = c_edgeWndSize; m_wndR.Height = Height; } /// <summary> /// Handles the windows state changed. /// </summary> /// <param name="sender">The sender.</param> /// <param name="e">The <see cref="System.EventArgs"/> /// instance containing the event data.</param> private void HandleWndStateChanged(Object sender, EventArgs e) { if (WindowState == WindowState.Normal) { ShowSurrounds(); } else { HideSurrounds(); } }