private void Dispose(bool disposing)
{
if (disposing)
{
if (_cursor != null)
{
_cursor.Dispose();
_cursor = null;
}
if (_safeHandle != null)
{
_safeHandle.Dispose();
_safeHandle = null;
}
}
}
private Cursor CrossHairCursor(int w, int h)
{
Pen pen = new Pen(Color.Red, 5);
Pen thinPen = new Pen(Color.Red, 1);
var pic = new Bitmap(w, h);
var gr = Graphics.FromImage(pic);
var pathXL = new GraphicsPath();
var pathXR = new GraphicsPath();
var pathX = new GraphicsPath();
var pathYT = new GraphicsPath();
var pathYB = new GraphicsPath();
var pathY = new GraphicsPath();
pathY.AddLine(new Point(w / 2, 0), new Point(w / 2, h));
pathYT.AddLine(new Point(w / 2, h / 2 - 2 * 16), new Point(w / 2, h / 2 - 16));
pathYB.AddLine(new Point(w / 2, h / 2 + 2 * 16), new Point(w / 2, h / 2 + 16));
pathX.AddLine(new Point(0, h / 2), new Point(w, h / 2));
pathXL.AddLine(new Point(w / 2 - 2 * 16, h / 2), new Point(w / 2 - 16, h / 2));
pathXR.AddLine(new Point(w / 2 + 16, h / 2), new Point(w / 2 + 2 * 16, h / 2));
gr.DrawPath(pen, pathXL);
gr.DrawPath(pen, pathXR);
gr.DrawPath(pen, pathYT);
gr.DrawPath(pen, pathYB);
gr.DrawPath(thinPen, pathX);
gr.DrawPath(thinPen, pathY);
var icon = Icon.FromHandle(pic.GetHicon());
SafeIconHandle safeHandle = _safeHandle;
if (safeHandle != null)
{
safeHandle.Dispose();
}
_safeHandle = new SafeIconHandle(icon.Handle);
safeHandle = _safeHandle;
return(CursorInteropHelper.Create(safeHandle));
}