WPF Aero Glass Window

用法 Win7 DwmSetWindowAttribute function Win10 SetWindowCompositionAttribute 代码

  1 using System;
  2 using System.Collections.Generic;
  3 using System.Linq;
  4 using System.Runtime.InteropServices;
  5 using System.Text;
  6 using System.Threading.Tasks;
  7 using System.Windows;
  8 using System.Windows.Interop;
  9 
 10 namespace AeroWindow
 11 {
 12     internal static class NativeMethods
 13     {
 14         [DllImport("user32.dll")]
 15         internal static extern int SetWindowCompositionAttribute(IntPtr hwnd, ref WindowCompositionAttribData data);
 16 
 17         [StructLayout(LayoutKind.Sequential)]
 18         internal struct WindowCompositionAttribData
 19         {
 20             public WindowCompositionAttribute Attribute;
 21             public IntPtr Data;
 22             public int SizeOfData;
 23         }
 24 
 25         [StructLayout(LayoutKind.Sequential)]
 26         internal struct AccentPolicy
 27         {
 28             public AccentState AccentState;
 29             public AccentFlags AccentFlags;
 30             public int GradientColor;
 31             public int AnimationId;
 32         }
 33 
 34         [Flags]
 35         internal enum AccentFlags
 36         {
 37             // ... 
 38             DrawLeftBorder = 0x20,
 39             DrawTopBorder = 0x40,
 40             DrawRightBorder = 0x80,
 41             DrawBottomBorder = 0x100,
 42             DrawAllBorders = (DrawLeftBorder | DrawTopBorder | DrawRightBorder | DrawBottomBorder)
 43             // ... 
 44         }
 45 
 46         internal enum WindowCompositionAttribute
 47         {
 48             // ... 
 49             WCA_ACCENT_POLICY = 19
 50             // ... 
 51         }
 52 
 53         internal enum AccentState
 54         {
 55             ACCENT_DISABLED = 0,
 56             ACCENT_ENABLE_GRADIENT = 1,
 57             ACCENT_ENABLE_TRANSPARENTGRADIENT = 2,
 58             ACCENT_ENABLE_BLURBEHIND = 3,
 59             ACCENT_INVALID_STATE = 4
 60         }
 61 
 62         public static void EnableBlur(this Window window)
 63         {
 64             if (SystemParameters.HighContrast)
 65             {
 66                 return; // Blur is not useful in high contrast mode 
 67             }
 68             SetAccentPolicy(window, NativeMethods.AccentState.ACCENT_ENABLE_BLURBEHIND);
 69         }
 70 
 71 
 72         public static void DisableBlur(this Window window)
 73         {
 74             SetAccentPolicy(window, NativeMethods.AccentState.ACCENT_DISABLED);
 75         }
 76 
 77         private static void SetAccentPolicy(Window window, NativeMethods.AccentState accentState)
 78         {
 79             var windowHelper = new WindowInteropHelper(window);
 80             var accent = new NativeMethods.AccentPolicy
 81             {
 82                 AccentState = accentState,
 83                 AccentFlags = GetAccentFlagsForTaskbarPosition(),
 84                   AnimationId = 2
 85             };
 86             var accentStructSize = Marshal.SizeOf(accent);
 87             var accentPtr = Marshal.AllocHGlobal(accentStructSize);
 88             Marshal.StructureToPtr(accent, accentPtr, false);
 89             var data = new NativeMethods.WindowCompositionAttribData
 90             {
 91                 Attribute = NativeMethods.WindowCompositionAttribute.WCA_ACCENT_POLICY,
 92                 SizeOfData = accentStructSize,
 93                 Data = accentPtr
 94             };
 95             NativeMethods.SetWindowCompositionAttribute(windowHelper.Handle, ref data);
 96             Marshal.FreeHGlobal(accentPtr);
 97         }
 98 
 99         private static NativeMethods.AccentFlags GetAccentFlagsForTaskbarPosition()
100         {
101             return NativeMethods.AccentFlags.DrawAllBorders;
102         }
103     }
104  }

 

 1  public MainWindow()
 2         {
 3             RoutedEventHandler handler = null;
 4             handler = (s, e) =>
 5             {
 6                 Loaded -= handler;
 7                 this.EnableBlur();
 8             };
 9             Loaded += handler;
10 
11             InitializeComponent();
12         }

 1 <Window x:Class="AeroWindow.MainWindow"
 2         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
 3         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
 4         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
 5         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
 6         xmlns:shell="http://schemas.microsoft.com/winfx/2006/xaml/presentation/shell"
 7         xmlns:local="clr-namespace:AeroWindow"
 8         mc:Ignorable="d" 
 9         Background="#44E6ECF0" 
10         Title="MainWindow" Height="600" Width="800" >
11     <shell:WindowChrome.WindowChrome>
12         <shell:WindowChrome GlassFrameThickness="1" UseAeroCaptionButtons="False"  NonClientFrameEdges="None"  CornerRadius="10" CaptionHeight="600"   />
13     </shell:WindowChrome.WindowChrome>
14     <Grid/>
15 </Window>

 

效果