///var b1 = new Bitmap();
///b1.width;
0
///b1.height;
0
///var tbd = new TestBitmapData();
///var b2 = new Bitmap(tbd);
///b2.width;
32
///b2.height;
24
///b2.bitmapData = null;
null
///b2.width;
0
///b2.height;
0
///b2.bitmapData = tbd;
[object TestBitmapData]
///b2.width;
32
///b2.height;
24
