Hi,

 

I want to use boost::thread to create threads that are member functions within a class. In all the examples I have seen, the thread function is defined globally.

 

I explain it with code. The following test code works:

 

//  code 1: example program that works  -----------------------------------------------

#include <boost/thread/thread.hpp>

#include <iostream>

using namespace std;

 

void testing()

{

    cout << "I'm a thread." << endl;

}

 

int main(int argc, char* argv[])

{

     // start a new thread that calls the "testing" function

     boost::thread my_thread(&testing);

     // wait for the thread to finish

     my_thread.join();

 

    return 0;

}

 

// -------------------------------------------------------------------------------------------

 

Now, I want to create something like:

 

// code 2: thread created from member class (code yields compiler errors)

 

#include <boost/thread/thread.hpp>

#include <iostream>

using namespace std;

 

class TestThread

{

public:

   void testing(void);

   void CreateThread(void);

};

 

void TestThread::CreateThread()

{

    // start a new thread that calls the "testing" function

    boost::thread my_thread(&testing);

    // wait for the thread to finish

    my_thread.join();

}

 

int main(int argc, char* argv[])

{

    TestThread t;

    t.CreateThread();

 

    return 0;   

}

 

When compiling the code above (code 2), I get the following compilation error:

ISO C++ forbids taking the address of an unqualified or paranthesized non-static member function to form a pointer to member function. Say &TestThread::testing.

 

My question is: How do I create threads from within a C++ class member function?

 

Thanks a lot for your help.

 

/ Mogr