private void Clear(bool clearHistory)
{
int x = drawArea.TheLayers.ActiveLayerIndex;
CommandDeleteAll command = new CommandDeleteAll(drawArea.TheLayers);
if (drawArea.TheLayers[x].Graphics.Clear())
{
drawArea.Refresh();
drawArea.AddCommandToHistory(command);
}
if (clearHistory)
{
drawArea.ClearHistory();
}
}
