NL_G_ShowGraph displays the graph G inside the window of index I defined by its handle F.
Examples
l=5;//number of linesc=7;//number of columnsLx=1000;//network area x-sideLy=1000;//network area x-side[g]=NL_T_Grid(l,c,Lx,Ly);//generation of a topology in respect with the grid methodind=1;//window index[f]=NL_G_ShowGraph(g,ind);//application of NL_G_ShowGraph