thanks for your reply javispedro.

with rover.sys the function keys F1-F9 are ok.
when i hold the SHIFT- and the FUNCTION-key over the SHIFT-key + 1...2...3.......9
for F2 the return-code=28
for F2 the return-code=-1
for F3 the return-code=-2
for F4 the return-code=-3
for F5 the return-code=-4
for F6 the return-code=-5
for F7 the return-code=-6
for F8 the return-code=-7
for F9 the return-code=-8

for F10 the return-code=80 and thats wrong, it must be -9

the ESC-mapping with -startmapper works only if i map the ESC to a single key like the "e". when i want to map the ESC to f.e. Ctrl+SPACE it works only one time. when i press Ctrl-SPACE again, the return code is no longer 27, it´s then 32=space.

with the ctrl+backspace i never get a return-code 27 of esc.

what i do in the mapper :

1) i select the ESC-key left upper corner
2) i select DELETE
3) i select ADD
4) i press the BACKSPACE-key over the RETURN-key on the physical n900 keyboard
5) i select MOD3 for the SHIFT-key
6) i select HOLD
7) i select SAVE
8) i select EXIT
9) i run the application (clipper-app)

the return code is 8, when i press the backspace-key, the 27-returncode of esc doesn´t appear.