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<DIV><FONT face=Arial size=2>Here is a detail on this problem which I did not
notice before: When exiting the QScribble program using the menu
selection: "File->Exit", the program exits normally and the
isLastView() method is never called. However, when the program is exited
using the "X" on the upperleft box of the application's window, I get the
problem listed below.</FONT></DIV>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px; PADDING-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A href="mailto:jic@atl.meitca.com" title=jic@atl.meitca.com>Johnas @ Work</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
href="mailto:kdevelop@barney.cs.uni-potsdam.de"
title=kdevelop@barney.cs.uni-potsdam.de>kdevelop@barney.cs.uni-potsdam.de</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Thursday, April 27, 2000 5:12
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Segmentation fault on exit</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>I recently resolved problems with creating and
debugging a KDE MDI project (KScribble example) using KDE2. So, I moved
on to creating and debugging a Qt MDI project (QScribble example which is the
same as the KScribble example only created by choosing Qt MDI project in the
wizard). I overcame two problems when the linker could not find the
libqt.so.2 library. I created a link to the Qt 2.1 library (in the
/usr/lib/qt-2.1.0/lib directory). Also, the autoconf warned about not
finding the KDE2 libraries, so I added "--prefix=/opt/kde2". That seemed
to solve the build. The program runs fine until I decide to exit.
When simply running the program I get a segmentation fault error. When I
run the debugger, the debugger stops at the "isLastView()" method. The
status line says: "No source: 0x804fffa in
QScribbleDoc::isLastView (this=0x1) at qscribbledoc.cpp:73". I
understand that the this pointer (=0x1) is invalid. I did not touch this
part of the code (it was generated by the wizard). If I close the child
window within the app, the same routine is called with a valid pointer.
This does not happen in the KDE MDI project (KScribble). The two
(KScribble and QScribble) source codes are almost identical. Is this a
bug or am I missing something?</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Appreciate any help.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Thanks,</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Johnas Cukier<BR>Principal Technical
Staff<BR>Mitsubishi Electric ITA<BR>571 Central Avenue, Suite 115<BR>New
Providence, NJ 07974<BR>Phone: (908)665-1200 ext.
20<BR>FAX: (908)665-2414<BR>email: <A
href="mailto:jic@atl.meitca.com">jic@atl.meitca.com</A><BR> </FONT></DIV></BLOCKQUOTE></BODY></HTML>