SetEnabledOff
virtual void SetEnabledOff(BPicture* picture);
fRefreshButton->SetEnabledOff(ButtonPicture(false, REFRESH_BUTTON_PICT));
fColorButton->SetEnabledOff(ButtonPicture(false, COLOR_BUTTON_PICT));
fDensityButton->SetEnabledOff(ButtonPicture(false, DENSITY_BUTTON_PICT));