public CanvasPlayback(string filename)
{
this.fileStream = File.OpenRead(filename);
this.playbackCommandTotal =
fileStream.ReadByte() |
(fileStream.ReadByte()) << 8 |
(fileStream.ReadByte()) << 16 |
(fileStream.ReadByte()) << 24;
// skip past the final brush size and color as we don't need to know them
fileStream.Seek(8, SeekOrigin.Current);
this.Color = Color.White;
}