fSwitchOnWheel
bool SwitchOnWheel() const { return fSwitchOnWheel; }
bool fSwitchOnWheel;
settings.FindBool("switch on wheel", &fSwitchOnWheel);
if (settings.ReplaceBool("switch on wheel", fSwitchOnWheel) != B_OK)
settings.AddBool("switch on wheel", fSwitchOnWheel);
if (!fSwitchOnWheel)
fSwitchOnWheel = !fSwitchOnWheel;
switchItem->SetMarked(fSwitchOnWheel);
if (enable == fSwitchOnWheel)
fSwitchOnWheel = enable;