QPlainTextEdit segmentation fault

Posted by Alexander on Stack Overflow See other posts from Stack Overflow or by Alexander
Published on 2010-04-05T09:59:26Z Indexed on 2010/04/05 10:03 UTC
Read the original article Hit count: 337

Filed under:

qt

|

segmentation-fault

Hi, All!

I have some Qt application with QPlainTextEdit in Tab widget. When try to make a pointer on it

QPlainTextEdit *w = (QPlainTextEdit*)ui->tabWidget->widget(0)

and call a document() method

w->document()

I get a segfault.

But if i call document directly, e.g. ui->mainEdit->document(), then everything works fine.

Can anybody explain me why it happens?

© Stack Overflow or respective owner

Related posts about qt

qt cannot open input file 'c:\Qt\qt\lib\qtmaind.lib'

as seen on Stack Overflow - Search for 'Stack Overflow'
Hello, I am using qt 4.5 I have created a project and I want to compile on visual studio 2008 for windows mobile 6.0 So I have created the project files doing this: D:\Projects\Phone_PDA\Phone_PDA>set QMAKESPEC=win32-msvc2008 D:\Projects\Phone_PDA\Phone_PDA>qmake -tp vc The VS project was… >>> More
Qt Linking Error.

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I configure qt-x11 with following options ./configure -prefix /iTalk/qtx11 -prefix-install -bindir /iTalk/qtx11-install/bin -libdir /iTalk/qtx11-install/lib -docdir /iTalk/qtx11-install/doc -headerdir /iTalk/qtx11-install/include -datadir /iTalk/qtx11-install/data -examplesdir /iTalk/qtx11-install/examples… >>> More
To connect Gstreamer with Qt in order to play a gstreamer video in the Qt Widget

as seen on Stack Overflow - Search for 'Stack Overflow'
I tried using phonon to play the video but could not succeed. Off-late came to know through the Qt forums that even the latest version of Qt does not support phonon. Thats when i started using Gstreamer.Any suggestions as to how to connect the Gstreamer window with the Qt widget?My aim is to play… >>> More
How to mix C++ Qt objects and Qt Jambi objects

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I'm trying to combine some existing Qt code written in C++ with some code written in Java using Qt Jambi, but I'm not quite sure how to do it. I'm basically trying to acieve two things: Pass a QObject from C++ to Java using JNI Pass a Qt Jambi QObject from Java to C++ It looks like I can… >>> More
La rubrique Qt sur Facebook, devenez vous aussi fan et suivez l'actualité Qt depuis Facebook

as seen on Developper.com - Search for 'Developper.com'
Comme vous l'avez probablement remarqué, les réseaux sociaux explosent de partout, Developpez.com et toutes ses rubriques se doivent donc, comme toujours auparavant, de suivre l'évolution en s'ouvrant à ces réseaux sociaux. Vous pouvez donc désormais suivre l'actualité de la rubrique sur Facebook… >>> More

Related posts about segmentation-fault

How to catch segmentation fault in Linux?

as seen on Stack Overflow - Search for 'Stack Overflow'
I need to catch segmentation fault in third party library cleanup operations. This happens sometimes just before my program exits, and I cannot fix the real reason of this. In Windows programming I could do this with __try - __catch. Is there cross-platform or platform-specific way to do the same… >>> More
gcc -fstack-check causes segmentation fault ?

as seen on Stack Overflow - Search for 'Stack Overflow'
I have got a segmentation fault even with a "Hello World!" program sometimes. The interesting thing is that the segmentation fault not always shows up. Does there are some kind of famout bug on this flag? My gcc version is 4.1.1 with redhat 64bit. >>> More
Segmentation fault on the server, but not local machine

as seen on Stack Overflow - Search for 'Stack Overflow'
As stated in the title, the program is working on my local machine (ubuntu 9.10) but not on the server (linux). It's a grid hosting hosting package of godaddy. Please help.. Here is the code: #include <stdio.h> #include <stdlib.h> int main(int argc, char **argv) { long offset; … >>> More
Segmentation Fault (C) occur on the server, but works on local machine

as seen on Stack Overflow - Search for 'Stack Overflow'
As stated in the title, the program is working on my local machine (ubuntu 9.10) but not on the server (linux). It's a grid hosting hosting package of godaddy. Please help.. Here is the code: #include <stdio.h> #include <stdlib.h> int main(int argc, char **argv) { long offset; … >>> More
Why this generates segmentation fault?

as seen on Stack Overflow - Search for 'Stack Overflow'
#include<stdio.h> void foo(int **arr) { arr[1][1]++; } main() { int arr[20][20]; printf("%d\n",arr[1][1]); foo((int**)arr); printf("%d\n",arr[1][1]); } >>> More