WPF与Winform自定义鼠标的方法（自选图片与大小）

Winform:

[DllImport("user32.dll")]
        public static extern IntPtr LoadImage(IntPtr hinst,string lpszName,uint uType
            ,int cxDesired,int cyDesired,uint fuLoad);
private void OnLoad(object sender, EventArgs eventArgs)
        {
            Cursor myCursor = new Cursor(Cursor.Current.Handle);
            IntPtr p = LoadImage(IntPtr.Zero,
                "thinking.ani", 
                2, 1256, 1256, 0x00000010);
            myCursor.GetType().InvokeMember("handle", BindingFlags.Public |
              BindingFlags.NonPublic | BindingFlags.Instance |
              BindingFlags.SetField, null, myCursor,
              new object[] { p });

            this.Cursor = myCursor;
        }

WPF   核心代码  将一个UIElement转化成Cursor

public Cursor ConvertToCursor(UIElement control, Point hotSpot)
        {
            // convert FrameworkElement to PNG stream
            var pngStream = new MemoryStream();
            control.Measure(new Size(double.PositiveInfinity, double.PositiveInfinity));
            Rect rect = new Rect(0, 0, control.DesiredSize.Width, control.DesiredSize.Height);
            RenderTargetBitmap rtb = new RenderTargetBitmap((int)control.DesiredSize.Width, (int)control.DesiredSize.Height, 96, 96, PixelFormats.Pbgra32);

            control.Arrange(rect);
            rtb.Render(control);

            PngBitmapEncoder png = new PngBitmapEncoder();
            png.Frames.Add(BitmapFrame.Create(rtb));
            png.Save(pngStream);

            // write cursor header info
            var cursorStream = new MemoryStream();
            cursorStream.Write(new byte[2] { 0x00, 0x00 }, 0, 2);                               // ICONDIR: Reserved. Must always be 0.
            cursorStream.Write(new byte[2] { 0x02, 0x00 }, 0, 2);                               // ICONDIR: Specifies image type: 1 for icon (.ICO) image, 2 for cursor (.CUR) image. Other values are invalid
            cursorStream.Write(new byte[2] { 0x01, 0x00 }, 0, 2);                               // ICONDIR: Specifies number of images in the file.
            cursorStream.Write(new byte[1] { (byte)control.DesiredSize.Width }, 0, 1);          // ICONDIRENTRY: Specifies image width in pixels. Can be any number between 0 and 255. Value 0 means image width is 256 pixels.
            cursorStream.Write(new byte[1] { (byte)control.DesiredSize.Height }, 0, 1);         // ICONDIRENTRY: Specifies image height in pixels. Can be any number between 0 and 255. Value 0 means image height is 256 pixels.
            cursorStream.Write(new byte[1] { 0x00 }, 0, 1);                                     // ICONDIRENTRY: Specifies number of colors in the color palette. Should be 0 if the image does not use a color palette.
            cursorStream.Write(new byte[1] { 0x00 }, 0, 1);                                     // ICONDIRENTRY: Reserved. Should be 0.
            cursorStream.Write(new byte[2] { (byte)hotSpot.X, 0x00 }, 0, 2);                    // ICONDIRENTRY: Specifies the horizontal coordinates of the hotspot in number of pixels from the left.
            cursorStream.Write(new byte[2] { (byte)hotSpot.Y, 0x00 }, 0, 2);                    // ICONDIRENTRY: Specifies the vertical coordinates of the hotspot in number of pixels from the top.
            cursorStream.Write(new byte[4] {                                                    // ICONDIRENTRY: Specifies the size of the image's data in bytes
                                          (byte)((pngStream.Length & 0x000000FF)),
                                          (byte)((pngStream.Length & 0x0000FF00) >> 0x08),
                                          (byte)((pngStream.Length & 0x00FF0000) >> 0x10),
                                          (byte)((pngStream.Length & 0xFF000000) >> 0x18)
                                       }, 0, 4);
            cursorStream.Write(new byte[4] {                                                    // ICONDIRENTRY: Specifies the offset of BMP or PNG data from the beginning of the ICO/CUR file
                                          (byte)0x16,
                                          (byte)0x00,
                                          (byte)0x00,
                                          (byte)0x00,
                                       }, 0, 4);

            // copy PNG stream to cursor stream
            pngStream.Seek(0, SeekOrigin.Begin);
            pngStream.CopyTo(cursorStream);

            // return cursor stream
            cursorStream.Seek(0, SeekOrigin.Begin);
            return new Cursor(cursorStream);
        }