Thank you for your answer Antonio
Download http://rapidshare.com/files/102094690/libfivec.zip.html
library change ( libfivec.a )
... tutor04 compile and link
./../lib/libfivec.a(comboboxes.o): In function `HB_FUN_CREATECOMBOBOX':
comboboxes.c:(.text+0x85): undefined reference to `CbxChangeEvent'
collect2: ld returned 1 exit status
done!
???