  CP violation effects produced by the nuclear magnetic quadrupole moment
(MQM), electron electric dipole moment (EDM) and scalar$-$pseudoscalar
nucleus$-$electron neutral current (SP) interaction in $^{177}$Hf$^{19}$F$^+$
and $^{179}$Hf$^{19}$F$^+$ are calculated. The role of the hyperfine
interaction is investigated. It is shown that the MQM shift can be
distinguished from the electron EDM and SP ones due to the implicit dependence
of MQM shift on the hyperfine sublevel. The MQM effect is expressed in terms of
the proton (EDM), QCD vacuum angle $\theta$ and quark chromo-EDMs.
