void RecordBrushSizeChange(Rectangle brush)
{
this.currentBrushSize = brush.Width;
commandList.Add(CanvasRecorderCommand.SetBrushSize);
commandList.Add((byte)this.currentBrushSize);
commandList.Add((byte)(this.currentBrushSize >> 8));
commandList.Add((byte)(this.currentBrushSize >> 16));
commandList.Add((byte)(this.currentBrushSize >> 24));
}