>> FWIW, I usually solve that problem by making your "$frame" a wxPanel


this is complete solution!

my $bigbutton = Wx::Button->new( $frame, 1, 'Вып&#10
+86;лнить расч&#
+1077;т', [-1,-1], [-1,-1]);
my $mass_label = Wx::StaticText->new($frame, 2, 'Ваш
+ вес:',[-1,-1], [-1,-1]);
my $drink_label = Wx::StaticText->new($frame, 4, 'Пр&#1077
+;дпочитаем&#109
+9;й напиток:',[-1,-1]
+, [-1,-1]);
my $mass_entry = Wx::TextCtrl->new($frame, 3, '',[-1,-1], [-1,-1]);
[download]

no wxPanel needed! Now my code works equally on all platforms! THX, Anonymous Monk