I found the solution in this thread: How to Render a Transparent Cursor to Bitmap preserving alpha channel?
So here is the code:
[StructLayout(LayoutKind.Sequential)]
private struct ICONINFO
{
public bool fIcon;
public int xHotspot;
public int yHotspot;
public IntPtr hbmMask;
public IntPtr hbmColor;
}
[DllImport("user32")]
private static extern bool GetIconInfo(IntPtr hIcon, out ICONINFO pIconInfo);
[DllImport("user32.dll")]
private static extern IntPtr LoadCursorFromFile(string lpFileName);
[DllImport("gdi32.dll", SetLastError = true)]
private static extern bool DeleteObject(IntPtr hObject);
private Bitmap BitmapFromCursor(Cursor cur)
{
ICONINFO ii;
GetIconInfo(cur.Handle, out ii);
Bitmap bmp = Bitmap.FromHbitmap(ii.hbmColor);
DeleteObject(ii.hbmColor);
DeleteObject(ii.hbmMask);
BitmapData bmData = bmp.LockBits(new Rectangle(0, 0, bmp.Width, bmp.Height), ImageLockMode.ReadOnly, bmp.PixelFormat);
Bitmap dstBitmap = new Bitmap(bmData.Width, bmData.Height, bmData.Stride, PixelFormat.Format32bppArgb, bmData.Scan0);
bmp.UnlockBits(bmData);
return new Bitmap(dstBitmap);
}
private void Form1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
{
//Using LoadCursorFromFile from user32.dll, get a handle to the icon
IntPtr hCursor = LoadCursorFromFile("C:\\Windows\\Cursors\\Windows Aero\\aero_busy.ani");
//Create a Cursor object from that handle
Cursor cursor = new Cursor(hCursor);
//Convert that cursor into a bitmap
using (Bitmap cursorBitmap = BitmapFromCursor(cursor))
{
//Draw that cursor bitmap directly to the form canvas
e.Graphics.DrawImage(cursorBitmap, 50, 50);
}
}
It's written for Win Forms and draws an image. But can be used in wpf as well with referencing to System.Windows.Forms. and then you can convert that bitmap to bitmap source and show it in an image control...
The reason I'm using System.Windows.Forms.Cursor instead of System.Windows.Input.Cursor is that I can't get to create a new instance of cursor using the IntPtr handle...
Edit: The above method does NOT work with cursors having low color bits.
An alternative is to use Icon.ExtractAssociatedIcon
instead:
System.Drawing.Icon i = System.Drawing.Icon.ExtractAssociatedIcon(@"C:\Windows\Cursors\arrow_rl.cur");
System.Drawing.Bitmap b = i.ToBitmap();
Hope that helps someone ...