FoxPro and Ctrl-Enter

Greetings!
While using FoxPro 2.6 programs in dosemu, I have notice that some key-pairs like Ctrl+Enter, Shift+Enter does not works correctly. Similar problem was founded in mailing list archive for linux-msdos:
http://marc.info/?l=linux-msdos&m=95814593621302&w=3
Eric W. Biederman has suggested to try patch together with programme keyboard_test-1.2. I've tried this prog. Looks like some keystrokes doesn't works in common way:
'Ctrl+Enter' degrades to 'Enter', it produces scancodes 1C,9C (down,up), 'Shift+Enter' also degrades to 1C,9C, however 'Alt+Enter' works good -
- 38,1C,9C,B8.
I most interesting in Ctrl+Enter pair. How I can solve this problem? May be it's already solved thus I just need some improves in dosemu.conf or ~/.dosemurc...
Thank you. Sorry for awful syntax...

WBR Eugeny Petoukhov
[email protected]