windows 10 透明毛玻璃，winform和wpf方法

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win10的透明毛玻璃，winform和wpf方法，win7、8不能用，只是win10  public partial class Form1 : Form     {         [DllImport("user32.dll")]         internal static extern int SetWindowCompositionAttribute(IntPtr hwnd, ref WindowCompositionAttributeData data);           [StructLayout(LayoutKind.Sequential)]         internal struct WindowCompositionAttributeData         {             public WindowCompositionAttribute Attribute;             public IntPtr Data;             public int SizeOfData;         }           internal enum WindowCompositionAttribute         {             WCA_ACCENT_POLICY = 19         }           internal enum AccentState         {             ACCENT_DISABLED = 0,             ACCENT_ENABLE_GRADIENT = 1,             ACCENT_ENABLE_TRANSPARENTGRADIENT = 2,             ACCENT_ENABLE_BLURBEHIND = 3,             ACCENT_INVALID_STATE = 4         }           [StructLayout(LayoutKind.Sequential)]         internal struct AccentPolicy         {             public AccentState AccentState;             public int AccentFlags;             public int GradientColor;             public int AnimationId;         }           internal void EnableBlur()         {             var accent = new AccentPolicy();             var accentStructSize = Marshal.SizeOf(accent);             accent.AccentState = AccentState.ACCENT_ENABLE_BLURBEHIND;               var accentPtr = Marshal.AllocHGlobal(accentStructSize);             Marshal.StructureToPtr(accent, accentPtr, false);               var data = new WindowCompositionAttributeData();             data.Attribute = WindowCompositionAttribute.WCA_ACCENT_POLICY;             data.SizeOfData = accentStructSize;             data.Data = accentPtr;               SetWindowCompositionAttribute(this.Handle, ref data);               Marshal.FreeHGlobal(accentPtr);         } ................... ................... private void Form1_Load(object sender, EventArgs e)         {             EnableBlur();         }   窗体背景设置比如Red，然后TransparencyKey=Red，就有行了。   如果使用WPF，修改： internal void EnableBlur() {     var windowHelper = new WindowInteropHelper(this);     ......     ......     SetWindowCompositionAttribute(windowHelper.Handle, ref data);     ...... }