Problem with QMessageBox and Windows 7

fermatqt

hi!

i have a problem with QMessageBox and Windows 7:

connect(ui->actionAbout, SIGNAL(triggered()), this, SLOT(onActionAbout()));

void MainWindow::onActionAbout() {
    QMessageBox::about(this, "About", qApp->applicationName() +
                       ": Test.<br><br>"
                       "Autore: " + QString(qApp->organizationName()).replace("_"," ") +
                       "<br><br>"
                       "Web site: <a href='" + qApp->organizationDomain() +
                       "'>................it</a><br><br>"
                       "Licenza: <a href='................'>Creative Commons</a><br><br>"
                       "Linguaggio: C++/Qt<br><br>"
                       "Versione: " + qApp->applicationVersion() +
                       "<br><br>"
                       "Versione Qt: " + QT_VERSION_STR);
}

this code works on Linux and Windows 10, but not in Windows 7.
when I run this code in Windows 7, the program crashes.
do you know why?

jsulm

@fermatqt Did you try to debug your app on Windows 7? To see where exactly it is crashing and to get stack trace.

fermatqt

@jsulm said in Problem with QMessageBox and Windows 7:

@fermatqt Did you try to debug your app on Windows 7? To see where exactly it is crashing and to get stack trace.

unfortunately I do not have a car with which to install Windows 7 on QtCreator.
is there a way to debug without installing QtCreator?

fermatqt

however this works without problems:

void MainWindow::onActionAboutQt() {
    QMessageBox::aboutQt(this, "About Qt");
}

fermatqt

210/5000
ok, I installed QtCreator on a machine with Windows 7 64bit.
I run the program from QtCreator, and everything worked.
so the problem is that when I use a compiled binary for Windows 10?
possible?

jsulm

@fermatqt It should work fine on Windows 7.
"when I run this code in Windows 7, the program crashes" - what exactly happens? Any error message?

fermatqt

@jsulm said in Problem with QMessageBox and Windows 7:

@fermatqt It should work fine on Windows 7.
"when I run this code in Windows 7, the program crashes" - what exactly happens? Any error message?

the program closes, and it appears the windows error "Programs Has Stopped Working".

SGaist

Hi,

How did you deploy the application ?

fermatqt

@SGaist said in Problem with QMessageBox and Windows 7:

Hi,

How did you deploy the application ?

i used windpeplyqt!!

SGaist

Which version of Qt ?

fermatqt

@SGaist

5.8 and QtCreator 4.2.2-2

SGaist

What compiler are you using ?

fermatqt

@SGaist
i'm using msvc2015

SGaist

Since the 5.9 betas are available, can you check them to see if you still encounter that problem ?

fermatqt

@SGaist said in Problem with QMessageBox and Windows 7:

Since the 5.9 betas are available, can you check them to see if you still encounter that problem ?

hi!
I also tried with Qt 5.9, but I have the same problem.
Even this code does not work:

#ifndef SAVEDIALOG_H
#define SAVEDIALOG_H

#include <QObject>
#include <QStringList>
#include <QFileDialog>

inline QString saveDialog() {
    QString fileName;
    QStringList filters;
    filters << "CSV(*.csv)" << "XLS(*.xls)" << "PDF(*.pdf)" << "All files(*.*)";
    QFileDialog fd(0, QObject::tr("Salva"), QDir::homePath());
    fd.setAcceptMode(QFileDialog::AcceptSave);
    fd.setNameFilters(filters);
    if (fd.exec() == QDialog::Accepted) {
        fileName = fd.selectedFiles()[0];
    }
    return fileName;
}

fermatqt

instead, this line works:

QMessageBox::aboutQt(this);