> mtk_attach_gtk_hscale (c1, gui1->hscale); > mtk_attach_gtk_vscale (c2, gui1->vscale); > mtk_attach_gtk_hscale (c2, gui2->hscale); > ... Sorry, I meant : midibind_attach_gtk_hscale (c1, gui1->hscale); midibind_attach_gtk_vscale (c2, gui1->vscale); midibind_attach_gtk_hscale (c2, gui2->hscale); ... -- og