how to receive other thread's return value in main thread

[name101]

testthread::testthread(worker* w, QObject parent):QObject(parent),result(0)
{
worker _w=w;
_w->moveToThread(&workerThread);
connect(&workerThread,SIGNAL(started()),_w,SLOT(dowork()));
connect(&workerThread,SIGNAL(finished()),_w,SLOT(deleteLater()));
connect(_w,SIGNAL(finished()),&workerThread,SLOT(deleteLater()));
connect(_w,SIGNAL(finished()),&workerThread,SLOT(quit()));
connect(_w,SIGNAL(resultReady(int)),this,SLOT(handleResult(int)));
workerThread.start();
}
int main(int argc, char argv[])
{
QCoreApplication a(argc, argv);
int i=0;
realworker w=new realworker(i);
testthread t(w,nullptr);
t.thread()->wait(); //testthread has Qthread member value.
return a.exec();
}

I want to receive result value after handleResult() call in main()
So I used wait() in main() , but it prints as below:

QThread::wait: Thread tried to wait on itself

How can I get the thread return value?

[jsulm]

@name101 What do you mean by "return value"? Doesn't your worker already return the result as parameter in resultReady(int) signal?

[name101]

I want to wait for resultReady(int) to complete and then get it from main thread like C's WaitForSingleObject function

[ollarch]

As "testthread" is a class and you have an object of this class, you can define another signal from "testthread" class and connect it to a main thread slot.

[jsulm]

@name101 Why do you want to wait for it? Just connect a slot to it and do what you need to do when the signal is emitted.