GtkWidget* gtk_alignment_new( gfloat xalign,

                              gfloat yalign,

                              gfloat xscale,

                              gfloat yscale );


void gtk_alignment_set( GtkAlignment *alignment,

                        gfloat        xalign,

                        gfloat        yalign,

                        gfloat        xscale,

                        gfloat        yscale );

    gtk_container_add (GTK_CONTAINER (alignment), child_widget);