_beginthreadex static member function

Question

How do I create a thread routine of a static member function

class Blah
{
    static void WINAPI Start();
};

// .. 
// ...
// ....

hThread = (HANDLE)_beginthre         


        

Answer 1

class Blah
{
    static unsigned int __stdcall Start(void*); // void* should be here, because _beginthreadex requires it.
};

The routine passed to _beginthreadex must use the __stdcall calling convention and must return a thread exit code.

Implementation of Blah::Start:

unsigned int __stdcall Blah::Start(void*)
{
  // ... some code

  return 0; // some exit code. 0 will be OK.
}

Later in your code you could write any of the following:

hThread = (HANDLE)_beginthreadex(NULL, 0, CBlah::Start, NULL, NULL, NULL);
// or
hThread = (HANDLE)_beginthreadex(NULL, 0, &CBlah::Start, NULL, NULL, NULL);

In first case Function-to-pointer conversion will be applied according to C++ Standard 4.3/1. In second case you'll pass pointer to function implicitly.