#0  0x081873e8 in QButton::isOn (this=0xffffffff) at /usr/lib/qt-3.3/include/qbutton.h:193
0000001  0x081ab1a0 in QRadioButton::isChecked (this=0xffffffff) at /usr/lib/qt-3.3/include/qradiobutton.h:84
0000002  0x0843d0c0 in ReformDoc::updateDocumentSettings (this=0xbffcfda8) at reformdoc.cpp:1045
0000003  0x085ebec9 in ScribusMainWindow::slotDocSetup (this=0x873dda0) at scribus.cpp:1914
0000004  0x08623f78 in ScribusMainWindow::qt_invoke (this=0x873dda0, _id=199, _o=0xbffd0128) at scribus.moc:1076
0000005  0x054e4eb4 in QObject::activate_signal (this=0x87a22b0, clist=0x87c26e8, o=0xbffd0128) at kernel/qobject.cpp:2355
0000006  0x054e5374 in QObject::activate_signal (this=0x87a22b0, signal=2) at kernel/qobject.cpp:2324
0000007  0x0587eee9 in QAction::activated (this=0xffffffff) at .moc/release-shared-mt/moc_qaction.cpp:150
0000008  0x0563649f in QAction::internalActivation (this=0x87a22b0) at widgets/qaction.cpp:979
0000009  0x0587f0ad in QAction::qt_invoke (this=0x87a22b0, _id=8, _o=0xbffd0244) at .moc/release-shared-mt/moc_qaction.cpp:168
0000010 0x084820f8 in ScrAction::qt_invoke (this=0x87a22b0, _id=8, _o=0xbffd0244) at scraction.moc:208
0000011 0x054e4eb4 in QObject::activate_signal (this=0x8834d60, clist=0x88347c8, o=0xbffd0244) at kernel/qobject.cpp:2355
0000012 0x0585d2e6 in QSignal::signal (this=0x8834d60, t0=@0xffffffff) at .moc/release-shared-mt/moc_qsignal.cpp:100
0000013 0x05502693 in QSignal::activate (this=0x8834d60) at kernel/qsignal.cpp:212
0000014 0x055f95e2 in QPopupMenu::mouseReleaseEvent (this=0x882ed90, e=0xbffd0674) at widgets/qpopupmenu.cpp:1693
0000015 0x05523187 in QWidget::event (this=0x882ed90, e=0xbffd0674) at kernel/qwidget.cpp:4699
0000016 0x054800dd in QApplication::internalNotify (this=0xffffffff, receiver=0x882ed90, e=0xbffd0674) at kernel/qapplication.cpp:2635
0000017 0x0548103f in QApplication::notify (this=0xbffd0a08, receiver=0x882ed90, e=0xbffd0674) at kernel/qapplication.cpp:2421
0000018 0x05417b4d in QETWidget::translateMouseEvent (this=0x882ed90, event=0xbffd0938) at kernel/qapplication.h:518
0000019 0x05415f01 in QApplication::x11ProcessEvent (this=0xbffd0a08, event=0xbffd0938) at kernel/qapplication_x11.cpp:3468
0000020 0x0542a008 in QEventLoop::processEvents (this=0x872c680, flags=Variable "flags" is not available.
) at kernel/qeventloop_x11.cpp:192
0000021 0x05498812 in QEventLoop::enterLoop (this=0x872c680) at kernel/qeventloop.cpp:198
0000022 0x05498736 in QEventLoop::exec (this=0x872c680) at kernel/qeventloop.cpp:145
0000023 0x0547faa9 in QApplication::exec (this=0xbffd0a08) at kernel/qapplication.cpp:2758
0000024 0x086290bd in mainApp (argc=1, argv=0xbffd0b24) at main_nix.cpp:69
0000025 0x0862910a in main (argc=1, argv=0xbffd0b24) at main_nix.cpp:44

ApplicationPrefs tempPrefs(doc->prefsData);
TabPDFWidget w(..., tempPrefs.PDF_Options, ...);
whateverLayout.addWidget(&w);
// blah blah other prefs stuff. For now we must copy prefs out of each
// panel. Later they should probably be separate widgets which modify
// the passed prefs data reference instead.
if (prefsDialog.exec())
{
   doc->prefsData = tempPrefs;
   // blah blah
}