Question

I’ve been trying to create a runnable class in order to interface multi-threaded classes just like java-folks do. But I can’t seem to use _beginthread with the virtual function run.
I’m getting the following error:

‘beginthread’ : cannot convert parameter 1
from ‘void (_cdecl Runnable::* )(void *)’ to ‘void (__cdecl *)(void *)’

#include "CriticalSection.h"
#include <stdio.h>
#include <conio.h>
#include <process.h>

class Runnable{
private:
    Runnable() { _beginthread(&Runnable::Run,0,(void*)0); }
    ~Runnable();
    virtual void __cdecl Run ( void* ) = 0;
};

int main(){
    //CriticalSection crt;
    //ErrorHandler err;
    //LockSection lc(&crt,&err);

    while(!kbhit());
    return 0;
}

Answer 1

You need the function to be passed to _beginthread to be static.

I suggest you read this article by Herb Sutter and try to implement the Active Object Pattern.