QThread * create(Function &&f)

[Qt_crazyer]

Hello. I want to create a new thread using QThread * create(Function &&f). But I don't know how should transfer parameter. I don't quite understand this parameter-Function &&f. Here is my code.

class a
{
private:
QThread* XferThread;
void XferLoop();
}
a::a
{
XferThread = QThread::create(XferLoop);
}

Parameter list mismatch. Does that have anything to do with member function(XferLoop)?How should I change my code？Thanks for any reply.
VS2015 + Qt5.12 on Windows10.

[SGaist]

Hi,

Based on the documentation of the create method, something like:

// somewhere:
void myFunction(int arg1, int arg2)
{
    qDebug() << Q_FUNC_INFO << arg1 << arg2;
}

// somewhere suitable:
QThread *myThread = QThread::create(myFunction, 12, 30);

[beecksche]

@qt_crazyer

Note: this function is only available when using C++17.

Does VS2015 support C++17?
If yes, did you enabled it with CONFIG+=c++17 in the .pro file?

[Qt_crazyer]

@sgaist
Thanks for your reply.
The example you mentioned is correct. But in my code, XferLoop() is the member function of class a. So it shows the error-Parameter list mismatch. The function XferLoop() calls many private variables of class a.
QThread::create(Function &&f) dosen't need C++17, but the QThread::create(Function &&f, Args &&... args) does.

[beecksche]

@qt_crazyer said in QThread * create(Function &&f):

QThread::create(Function &&f) dosen't need C++17, but the QThread::create(Function &&f, Args &&... args) does.

Sorry my fault!

[VRonin]

a::a
:XferThread(QThread::create(std::bind(&a::XferLoop,this))
{

}

The function XferLoop() calls many private variables of class a.

hic sunt leones. Be very careful not to create race conditions