C# 实现 WIN7毛玻璃窗口特效 Win AeroGlass

Windows 7 操作系统默认具有一款玻璃效果主题（Aero Glass）。如果选择了该款主题，所有的应用程序标题栏都会处于玻璃透明效果（如下图）。这个功能是由Desktop Window Manager（DWM）服务支持的。

那我们自己怎么实现呢，其实很简单
新建一个类，这里我们给他取名为AeroGlassHelper.cs
代码如下：

using System;
using System.Runtime.InteropServices;
using System.Windows;
using System.Windows.Interop;
using System.Windows.Media;

[StructLayout(LayoutKind.Sequential)]
public struct MARGINS
{
    public MARGINS(Thickness t)
    {
        Left = (int)t.Left;
        Right = (int)t.Right;
        Top = (int)t.Top;
        Bottom = (int)t.Bottom;
    }
    public int Left;
    public int Right;
    public int Top;
    public int Bottom;
}

public class GlassHelper
{
    [DllImport("dwmapi.dll", PreserveSig = false)]
    static extern void DwmExtendFrameIntoClientArea(
        IntPtr hWnd, ref MARGINS pMarInset);
    [DllImport("dwmapi.dll", PreserveSig = false)]
    static extern bool DwmIsCompositionEnabled();

    public static bool ExtendGlassFrame(Window window, Thickness margin)
    {
        if (!DwmIsCompositionEnabled())
            return false;

        IntPtr hwnd = new WindowInteropHelper(window).Handle;
        if (hwnd == IntPtr.Zero)
            throw new InvalidOperationException(
            "The Window must be shown before extending glass.");

        // Set the background to transparent from both the WPF and Win32 perspectives  
        window.Background = Brushes.Transparent;
        HwndSource.FromHwnd(hwnd).CompositionTarget.BackgroundColor = Colors.Transparent;

        MARGINS margins = new MARGINS(margin);
        DwmExtendFrameIntoClientArea(hwnd, ref margins);
        return true;
    }
}

在你需要的开启的地方添加如下代码：

 protected override void OnSourceInitialized(EventArgs e)
        {
            base.OnSourceInitialized(e);
            GlassHelper.ExtendGlassFrame(this, new Thickness(-1));
        }

大功告成，效果如下
[v_act]win7:

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[v_act]win10：
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