Mouse Wheel Scroll Lines

[saa]

Is there a way to set the mouse wheel scroll lines in XnViewMP0.26 in Linux. It appears too fast in the current settings.
I tried setting the wheelScrollLines=1 using qtconfig-qt4, but havn't noticed any change in XnViewMP.

[xnview]

Hum, this settings can't be changed in QT... i think that it takes it from OS config...