sf::Thread has no default constructor

[Inflammatory Nugget]

Greetings,

I was trying to create a class in a separate header. As soon as the constructor for the class would be called, a thread inside that class would run. However, declaring a sf::Thread in a class gives some issues. So I tried to search the web and  I found this forum thread: http://en.sfml-dev.org/forums/index.php?topic=7906.msg52768#msg52768. I attempted what was suggested in this thread:

#include <SFML\System.hpp>
#include <iostream>
class test_class{
private:
        test_class():test_thread(&test_class::loop, this){}
        int *a_p;
        sf::Thread test_thread;
public:
        test_class::test_class(int& a){
                a_p = &a;
        }
        void loop(){
                while(*a_p < 50){
                        std::cout << *a_p << std::endl;
                }
        }
};

However, sf::Thread has no default constructor, so I got the following error:
]1>c:\users\frank\documents\visual studio 2010\projects\cppapplication_4\test.h(9): error C2512: 'sf::Thread' : no appropriate default constructor available
I'm sort of confused what to do next 

Any help will be appreciated.

[Inflammatory Nugget]

If you want to use a sf::Thread inside a class, don't forget that it doesn't have a default constructor. Therefore, you have to initialize it directly in the constructor's initialization list

It's also written by Laurent in the forum thread that you linked, with a little code example.

Yes, that's... what I did?

[G.]

You didn't do it in the second constructor. The error even says that it's in line 9.

[Inflammatory Nugget]

Er, how exactly? The tutorial nor the thread I linked to tells me how to. Maybe I'm just not awake enough to do this 

Thanks for the swift responses btw, Mr Geedot.

[Laurent]

Er, how exactly?

The same way as you did in the other constructor

test_class::test_class(int& a):test_thread(&test_class::loop, this),a_p(&a){}

[Inflammatory Nugget]

Good morning,

My program runs perfectly fine now. Here's what it looks like:

#include <SFML\System.hpp>
#include <iostream>
class test_class{
private:
        test_class():test_thread(&test_class::loop, this){}
        int *a_p;
public:
        test_class::test_class(int& a):test_thread(&test_class::loop, this),a_p(&a){
                a_p = &a;
        }
        void loop(){
                while(*a_p < 50){
                        std::cout << *a_p << std::endl;
                }
        }
        sf::Thread test_thread;
};

I thank you for your help

[Laurent]

If you write a_p(&a) in the initialization list you don't need a_p = &a in the constructor definition.

[Inflammatory Nugget]

Oh, thanks for telling me!