多媒体桌面壁纸2.0 正式版

【实例截图】

点击“视频列表选择”，再需要播放前面打勾，点击“确定选择”。上边“播”放为预览，下边“OK”为桌面背景播放

点击“动画壁纸”，在下边点击“选择动画列表”，选中的打勾，关闭。上边“播”放为预览，下边“OK”为桌面背景播放

可播放本地视频、网络视频、动画作为系统桌面背景，自动循环播放列表。
可当做小工具直接使用，也可以参考代码自行修改，支持Windows 10、Windows 7。

有兴趣的可以搞一个小项目，设立一个自己的网站，可从网站更新动态桌面壁纸发送到客户端。
已将需要的库加入代码中，可调试运行（x86、允许不安全）。

支持
dvd://;"vcd://";"cdda://";"bluray://";"rtp://";"rtsp://";"http://";"udp://";"mms://";"dshow://";
"screen://";"fake://";"imem://";...........
等方式，
支持文件类型：
"*.3g2","*.3pg","*.3gp2","*.3gpp","*.amv","*.asf","*.avi","*.bik","*.divx","*.drc","*.dv","*.f4v",
"*.flv","*.gvi","*.gfx","*.m1v","*.m2v","*.m2t","*.m2ts","*.m4v","*.mkv","*.mov",
"*.mp2","*.mp2v","*.mp4","*.mp4v","*.mpe","*.mpeg","*.mpeg1","*.mpeg2","*.mpeg4",
"*.mpg","*.mpv2","*.mts","*.mtv","*.mxf","*.mxg","*.nsv","*.nuv","*.ogg","*.ogm",
"*.ogv","*.ogx","*.ps","*.rec","*.rm","*.rmvb","*.rpl","*.thp","*.tod","*.ts","*.tts","*.txd","*.vob",
"*.vro","*.webm","*.wm","*.wmv","*.wtv","*.xesc"......等。

采用VLC的DLL和FireFox的DLL，.NET为4.5版本。如需更高版本可直接从VS的NuGet中获得。
除VLC、FireFox基础DLL外，其余全部源码，并在重点部分加注了说明。
VLC与FireFox是有冲突的，代码中需进行调整可避免，已加了标注。
原VLC会有锁死情况，这里也通过代码进行了避免，在CS文件中进行查看。
注意：
如使用集成显卡，则开始壁纸播放时会挡住桌面图标，按下“Win” “D”组合键可正常使用。

 public static Image TransparentImage(Image srcImage, float opacity)
    {
        float[][] nArray ={ new float[] {1, 0, 0, 0, 0},
                        new float[] {0, 1, 0, 0, 0},
                        new float[] {0, 0, 1, 0, 0},
                        new float[] {0, 0, 0, opacity, 0},
                        new float[] {0, 0, 0, 0, 1}};
        ColorMatrix matrix = new ColorMatrix(nArray);
        ImageAttributes attributes = new ImageAttributes();
        attributes.SetColorMatrix(matrix, ColorMatrixFlag.Default, ColorAdjustType.Bitmap);
        Bitmap resultImage = new Bitmap(srcImage.Width, srcImage.Height);
        Graphics g = Graphics.FromImage(resultImage);
        g.DrawImage(srcImage, new Rectangle(0, 0, srcImage.Width, srcImage.Height), 0, 0, srcImage.Width, srcImage.Height, GraphicsUnit.Pixel, attributes);
        return resultImage;
    }

    public static class Win32
    {
        [DllImport("user32.dll")]
        public static extern IntPtr FindWindow(string className, string winName);

        [DllImport("user32.dll")]
        public static extern IntPtr SendMessageTimeout(IntPtr hwnd, uint msg, IntPtr wParam, IntPtr lParam, uint fuFlage, uint timeout, IntPtr result);

        [DllImport("user32.dll")]
        public static extern bool EnumWindows(EnumWindowsProc proc, IntPtr lParam);
        public delegate bool EnumWindowsProc(IntPtr hwnd, IntPtr lParam);

        [DllImport("user32.dll")]
        public static extern IntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfter, string className, string winName);

        [DllImport("user32.dll")]
        public static extern bool ShowWindow(IntPtr hwnd, int nCmdShow);

        [DllImport("user32.dll")]
        public static extern IntPtr SetParent(IntPtr hwnd, IntPtr parentHwnd);
    }

    public static IntPtr programIntPtr = IntPtr.Zero;
    public static void Init()
    {
        programIntPtr = Win32.FindWindow("Progman", null);
        if (programIntPtr != IntPtr.Zero)
        {
            IntPtr result = IntPtr.Zero;
            Win32.SendMessageTimeout(programIntPtr, 0x52c, IntPtr.Zero, IntPtr.Zero, 0, 0x3e8, result);
            Win32.EnumWindows((hwnd, lParam) =>
            {
                if (Win32.FindWindowEx(hwnd, IntPtr.Zero, "SHELLDLL_DefView", null) != IntPtr.Zero)
                {
                    IntPtr tempHwnd = Win32.FindWindowEx(IntPtr.Zero, hwnd, "WorkerW", null);
                    Win32.ShowWindow(tempHwnd, 0);
                }
                return true;
            }, IntPtr.Zero);
        }
    }

    [DllImport("kernel32.dll", EntryPoint = "SetProcessWorkingSetSize")]
    public static extern int SetProcessWorkingSetSize(IntPtr process, int minSize, int maxSize);

    public static void ClearMemory()
    {
        GC.Collect();
        GC.WaitForPendingFinalizers();
        if (Environment.OSVersion.Platform == PlatformID.Win32NT)
        {
            SetProcessWorkingSetSize(Process.GetCurrentProcess().Handle, -1, -1);
        }
    }