my $f1 = $mw->Frame(...)->pack; my $f2 = $mw->Frame(...)->pack; my $f3 = $mw->Frame(...)->pack; ,,, my $b1 = $f2->Button(...)->grid; my $b2 = $f2->Button(...)->grid; #### my $b1 = $f2->Button(...)->pack; my $b2 = $f2->Button(...)->grid;