Drag and Drop Cursor (커서) 변경

-일반적인 cur 파일로 변경방법

private void Label_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
    DataObject data = new DataObject(DataFormats.Text, ((Label)e.Source).Content);
 
    DragDrop.DoDragDrop((DependencyObject)e.Source, data, DragDropEffects.Copy);
}
 
private void Label_Drop(object sender, DragEventArgs e)
{
    ((Label)e.Source).Content = (string)e.Data.GetData(DataFormats.Text);
}
 
private Cursor customCursor = null;
 
private void Label_GiveFeedback(object sender, GiveFeedbackEventArgs e)
{
    if (e.Effects == DragDropEffects.Copy)
    {
        if (customCursor == null)
            customCursor = new Cursor(new FileStream("Earth.cur", FileMode.Open));
 
        e.UseDefaultCursors = false;
        Mouse.SetCursor(customCursor);
    }
    else
        e.UseDefaultCursors = true;
 
    e.Handled = true;
}

-UserControl(UI Element)로 바꾸는 방법

namespace VISION.IdeaParkinglot.Managers
{
    public class CursorManager
    {
        private static class NativeMethods
        {
            public struct IconInfo
            {
                public bool fIcon;
                public int xHotspot;
                public int yHotspot;
                public IntPtr hbmMask;
                public IntPtr hbmColor;
            }
            [DllImport("user32.dll")]
            public static extern SafeIconHandle CreateIconIndirect(ref IconInfo icon);
            [DllImport("user32.dll")]
            public static extern bool DestroyIcon(IntPtr hIcon);
            [DllImport("user32.dll")]
            [return: MarshalAs(UnmanagedType.Bool)]
            public static extern bool GetIconInfo(IntPtr hIcon, ref IconInfo pIconInfo);
        }
        [SecurityPermission(SecurityAction.LinkDemand, UnmanagedCode = true)]
        private class SafeIconHandle : SafeHandleZeroOrMinusOneIsInvalid
        {
            public SafeIconHandle()
                : base(true)
            {
            }
            override protected bool ReleaseHandle()
            {
                return NativeMethods.DestroyIcon(handle);
            }
        }
        private static Cursor InternalCreateCursor(System.Drawing.Bitmap bmp)
        {
            var iconInfo = new NativeMethods.IconInfo();
            NativeMethods.GetIconInfo(bmp.GetHicon(), ref iconInfo);
            iconInfo.xHotspot = 0;
            iconInfo.yHotspot = 0;
            iconInfo.fIcon = false;
            SafeIconHandle cursorHandle = NativeMethods.CreateIconIndirect(ref iconInfo);
            return CursorInteropHelper.Create(cursorHandle);
        }
        public static Cursor CreateCursor(UIElement element)
        {
            element.Measure(new Size(double.PositiveInfinity, double.PositiveInfinity));
            element.Arrange(new Rect(new Point(), element.DesiredSize));
            RenderTargetBitmap rtb =
              new RenderTargetBitmap(
                (int)element.DesiredSize.Width,
                (int)element.DesiredSize.Height,
                96, 96, PixelFormats.Pbgra32);
            rtb.Render(element);
            var encoder = new PngBitmapEncoder();
            encoder.Frames.Add(BitmapFrame.Create(rtb));
            using (var ms = new MemoryStream())
            {
                encoder.Save(ms);
                using (var bmp = new System.Drawing.Bitmap(ms))
                {
                    return InternalCreateCursor(bmp);
                }
            }
        }
    }
}

요기는 giveFeedBack에 쓸것
private void Label_GiveFeedback(object sender, GiveFeedbackEventArgs e)
{
    if (e.Effects == DragDropEffects.Copy)
    {
        if (customCursor == null)
            customCursor = CursorHelper.CreateCursor(e.Source as UIElement);
 
        if (customCursor != null)
        {
            e.UseDefaultCursors = false;
            Mouse.SetCursor(customCursor);
        }
    }
    else
        e.UseDefaultCursors = true;
 
    e.Handled = true;
}





참고 : https://wpf.2000things.com/2012/12/17/713-setting-the-cursor-to-an-image-of-an-uielement-while-dragging/