[Solved]Can't receive signal from another thread
-
Can't receive signal from another thread as following.
Using connect type as Qt::BlockingQueuedConnection, the thread blocks. But signal not received.main.cpp :
@#include "myclass.h"
int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);
MyClass myClass;
myClass.startAll();
return a.exec();
}
@thread.h :
@
#include <QtCore/QCoreApplication>
#include <QThread>
#include <QDebug>class Thread1 : public QThread
{
Q_OBJECT
public:
void run( void )
{
qDebug() << "thread 1 started";
int i = 0;
while(1)
{
msleep( 10 );
i++;
qDebug() << "i is: " + QString::number(i);
if(i==1000)
{
qDebug() << "Got I";
emit MyThread1Signal();
exit();
}
}
}
signals:
void MyThread1Signal();
};@myclass.cpp :
@
MyClass::MyClass(QObject *parent) :
QObject(parent)
{
thread1 = new Thread1();
connect(thread1, SIGNAL(MyThread1Signal()), this, SLOT(myClassSlot1()), Qt::BlockingQueuedConnection);
}void MyClass::startAll()
{
thread1->start();
thread1->wait();
}void MyClass::myClassSlot1()
{
qDebug()<<"Signal received";
}@myclass.h :
@
#ifndef MYCLASS_H
#define MYCLASS_H#include <QObject>
#include "threads.h"
class MyClass : public QObject
{
Q_OBJECT
public:
explicit MyClass(QObject *parent = 0);
void startAll();signals:
public slots:
void myClassSlot1();private:
Thread1* thread1;
};#endif // MYCLASS_H
@[edit: please add @ code tags. Did it for you, Eddy]
-
Things I will try:
- move the connect from the constructor to the startAll method, between the start and wait of the thread
- change the exit with a simple return
- leave the connection in automatic mode (remove blocked queue).
But I'm totally not sure about any of them.