Am 21.01.2013 19:36, schrieb Jason H: > Looks ok. But try calling a.exec() and using a singleshot zero timeout > timer (beforr a.exec()) to bring up the file dialog. Let us know if that > works.
That all works. I stripped down the example to bring only the run-time error. Looks like a Qt5-error, because the error doesn't show up in Qt 4.8.3. e.g. I tries various g++ versions witg Qt5, but the run-time error remains. Any Qt5 hints? > > > > ------------------------------------------------------------------------ > *From:* Wilhelm <[email protected]> > *To:* Qt Interest <[email protected]> > *Sent:* Monday, January 21, 2013 1:33 PM > *Subject:* [Interest] QFileDialog: what's wrong with this minimal example > > Hi all, > > if I compile this stripped down minimal example > ------------- > #include <QApplication> > #include <QFileDialog> > > int main(int argc, char *argv[]) > { > QApplication a(argc, argv); > QFileDialog fd(0, "Load from file", > QDir::currentPath(), > "All Files (*)"); > > // return a.exec(); > } > --------------- > > I get the following run-time error: > > QObject: Cannot create children for a parent that is in a different thread. > (Parent is QFileSystemWatcher(0x1770be0), parent's thread is > QThread(0x1734420), current thread is QFileInfoGatherer(0x1791c58) > > > It is compiled with QT5.0.0 and g++ (GCC) 4.8.0 20130113 (experimental): > > make[2]: Entering directory > `/home/lmeier/Software/qtwm/trunk/apps/apps5-build-QT5-Debug/test/test4' > g++ -c -m64 -pipe -g -Wall -W -D_REENTRANT -fPIE -DQT_WIDGETS_LIB > -DQT_GUI_LIB -DQT_CORE_LIB > -I/opt/Qt5.0.0/5.0.0/gcc_64/mkspecs/linux-g++-64 > -I../../../apps5/test/test4 -I/opt/Qt5.0.0/5.0.0/gcc_64/include > -I/opt/Qt5.0.0/5.0.0/gcc_64/include/QtWidgets > -I/opt/Qt5.0.0/5.0.0/gcc_64/include/QtGui > -I/opt/Qt5.0.0/5.0.0/gcc_64/include/QtCore -I. -I. -o main.o > ../../../apps5/test/test4/main.cc > make[1]: Entering directory > `/home/lmeier/Software/qtwm/trunk/apps/apps5-build-QT5-Debug/lib' > make[1]: Nothing to be done for `first'. > make[1]: Leaving directory > `/home/lmeier/Software/qtwm/trunk/apps/apps5-build-QT5-Debug/lib' > g++ -m64 -Wl,-rpath,/opt/Qt5.0.0/5.0.0/gcc_64 > -Wl,-rpath,/opt/Qt5.0.0/5.0.0/gcc_64/lib -o test4 main.o > -L/usr/X11R6/lib64 -L/opt/Qt5.0.0/5.0.0/gcc_64/lib -lQt5Widgets -lQt5Gui > -lQt5Core -lGL -lpthread > > -- > Wilhelm > > _______________________________________________ > Interest mailing list > [email protected] <mailto:[email protected]> > http://lists.qt-project.org/mailman/listinfo/interest > > -- Wilhelm _______________________________________________ Interest mailing list [email protected] http://lists.qt-project.org/mailman/listinfo/interest
