在Winform和WPF中启用Aero效果

API导入：

 public class DwmApi
    {
        
        [DllImport("dwmapi.dll", PreserveSig = false)]
        public static extern void DwmEnableBlurBehindWindow(IntPtr hWnd, DWM_BLURBEHIND pBlurBehind);

        /// <summary>
        /// 启用Areo效果
        /// </summary>
        /// <param name="hWnd"></param>
        /// <param name="pMargins"></param>
        [DllImport("dwmapi.dll", PreserveSig = false)]
        public static extern void DwmExtendFrameIntoClientArea(IntPtr hWnd, MARGINS pMargins);

        /// <summary>
        /// 系统是否支持Areo效果
        /// </summary>
        /// <returns></returns>
        [DllImport("dwmapi.dll", PreserveSig = false)]
        public static extern bool DwmIsCompositionEnabled();

        [DllImport("dwmapi.dll", PreserveSig = false)]
        public static extern void DwmGetColorizationColor(
          out int pcrColorization,
          [MarshalAs(UnmanagedType.Bool)]out bool pfOpaqueBlend);

        [DllImport("dwmapi.dll", PreserveSig = false)]
        public static extern void DwmEnableComposition(bool bEnable);

        [DllImport("dwmapi.dll", PreserveSig = false)]
        public static extern IntPtr DwmRegisterThumbnail(IntPtr dest, IntPtr source);

        [DllImport("dwmapi.dll", PreserveSig = false)]
        public static extern void DwmUnregisterThumbnail(IntPtr hThumbnail);

        [DllImport("dwmapi.dll", PreserveSig = false)]
        public static extern void DwmUpdateThumbnailProperties(IntPtr hThumbnail, DWM_THUMBNAIL_PROPERTIES props);

        [DllImport("dwmapi.dll", PreserveSig = false)]
        public static extern void DwmQueryThumbnailSourceSize(IntPtr hThumbnail, out Size size);

        [StructLayout(LayoutKind.Sequential)]
        public class DWM_THUMBNAIL_PROPERTIES
        {
            public uint dwFlags;
            public RECT rcDestination;
            public RECT rcSource;
            public byte opacity;
            [MarshalAs(UnmanagedType.Bool)]
            public bool fVisible;
            [MarshalAs(UnmanagedType.Bool)]
            public bool fSourceClientAreaOnly;

            public const uint DWM_TNP_RECTDESTINATION = 0x00000001;
            public const uint DWM_TNP_RECTSOURCE = 0x00000002;
            public const uint DWM_TNP_OPACITY = 0x00000004;
            public const uint DWM_TNP_VISIBLE = 0x00000008;
            public const uint DWM_TNP_SOURCECLIENTAREAONLY = 0x00000010;
        }

        [StructLayout(LayoutKind.Sequential)]
        public class MARGINS
        {
            public int cxLeftWidth, cxRightWidth, cyTopHeight, cyBottomHeight;

            public MARGINS(int left, int top, int right, int bottom)
            {
                cxLeftWidth = left;
                cyTopHeight = top;
                cxRightWidth = right;
                cyBottomHeight = bottom;
            }
        }

        [StructLayout(LayoutKind.Sequential)]
        public class DWM_BLURBEHIND
        {
            public uint dwFlags;
            [MarshalAs(UnmanagedType.Bool)]
            public bool fEnable;
            public IntPtr hRegionBlur;
            [MarshalAs(UnmanagedType.Bool)]
            public bool fTransitionOnMaximized;

            public const uint DWM_BB_ENABLE = 0x00000001;
            public const uint DWM_BB_BLURREGION = 0x00000002;
            public const uint DWM_BB_TRANSITIONONMAXIMIZED = 0x00000004;
        }

        [StructLayout(LayoutKind.Sequential)]
        public struct RECT
        {
            public int left, top, right, bottom;

            public RECT(int left, int top, int right, int bottom)
            {
                this.left = left;
                this.top = top;
                this.right = right;
                this.bottom = bottom;
            }
        }
    }

在Winform中使用方法：

直接在窗体的onload事件中加入

if (DwmApi.DwmIsCompositionEnabled())
{
DwmApi.DwmExtendFrameIntoClientArea(this.Handle, new DwmApi.MARGINS(0, 0, 0, 0));
}

并重载OnPaintBackground

protected override void OnPaintBackground(PaintEventArgs e)
{
base.OnPaintBackground(e);
if (DwmApi.DwmIsCompositionEnabled())
{
e.Graphics.Clear(Color.Black);
}
}

在WPF中使用方法：

WPF无法直接得到窗体句柄，可以使用下面辅助类

    class AeroHelper
    {
        public static bool ExtendGlassFrame(Window window, Thickness margin)
        {
           
            if (!DwmApi.DwmIsCompositionEnabled())
                return false;
            //WPF中不能直接得到Window句柄，要借助WindowInteropHelper
            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;

            DwmApi.MARGINS margins = new DwmApi.MARGINS((int)margin.Left, (int)margin.Top, (int)margin.Right, (int)margin.Bottom);
            DwmApi.DwmExtendFrameIntoClientArea(hwnd, margins);

            return true;
        }
    }

在Loaded事件中加入 AeroHelper.ExtendGlassFrame(this, new Thickness(-1));就可以了

代码下载