QT exited with code -1073741510

foxgod

3Q

JKSH

You don't need an event loop, so don't call exec().

@
// Replace this...
return a.exec();

// ...with this:
return 0;
@

If you call exec(), you need to quit your program by triggering QCoreApplication::exit() or QCoreApplication::quit()

foxgod

// Replace this...
return a.exec();

// ...with this:
return 0;

but how can i get i get terminate message from QCoreApplication::notify() or else method.

jeremy_k

I don't think QCoreApplication::notify(), which is used to deliver events, is what you want.

There's a QCoreApplication::aboutToQuit() signal that indicates that the main event loop is about to terminate, which works pretty well for applications that end main() with "return app.exec();" Minus an event loop, much of Qt won't be of use.

Perhaps a function that uses printf() and is registered with atexit() will work.

JKSH

[quote author="foxgod" date="1402987828"]but how can i get i get terminate message from QCoreApplication::notify() or else method.[/quote]What do you want to do with the message?

foxgod

i want to get console close's message ,when i know the console is closed,then i want to execute some program.

foxgod

@void terminateTest()
{
qDebug()<<"program is over"<<endl;
rootThreadpro.aboutToQuit();
}

int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);

qDebug()<<"Root\n";
atexit(terminateTest);
rootThreadpro.StartServer(); 
return a.exec&#40;&#41;;

}
@

this can solve currently question , antthing also?

JKSH

[quote author="foxgod" date="1402989786"]i want to get console close's message ,when i know the console is closed,then i want to execute some program.[/quote]You cannot get that message in your application. When you close the console, it terminates your application.

Just launch your other program before return 0;

I don't recommend closing a console application by clicking the 'X' or Ctrl-C. If your program terminates like this, it won't be able to clean up. Sometimes, this can corrupt your data files.

jeremy_k

It looks like atexit() won't work without some additional handling.

bq. Functions registered using atexit() (and on_exit(3)) are not called if a process terminates abnormally because of the delivery of a signal.

JKSH

Like I said, do not use Ctrl-C, and do not close your console by clicking the 'X'. These are dangerous ways to stop a program.

Why don't you quit your program properly?

Or, if you really want to close by clicking the 'X', create a QWidget-based GUI. Then, when you click the 'X', you will get a QCloseEvent.

jeremy_k

Sometimes users do unexpected things.