private GridPanel CreateSubPanel(int begin, int end)
{
GridPanel backgroundPanel = new GridPanel(Simulator.Scene, Vector3.Zero, new Vector2(500, 500), Preferences.PrioriteGUIPanneauGeneral, Color.White)
{
NbColumns = 4,
OnlyShowWidgets = true
};
for (int i = begin; i <= end; i++)
backgroundPanel.AddWidget("background" + i, new ImageWidget("background" + i, 0.1f));
return backgroundPanel;
}