Multi-thread

// Sender is the function to call

hThread = CreateThread(
          NULL,        // default security attributes 
          0,           // use default stack size  
          Sender,      // thread function 
          &dwThrdParam,// argument to thread function 
          0,           // use default creation flags 
          &dwThreadId);// returns the thread identifier 

char msg[20];
for (i = 0; i < ncamera; i++)
{
  sprintf(msg,"MutexName%d",i);
  hMutex[i] = CreateMutex(
      NULL,         // no security attributes
      FALSE,        // initially not owned
      msg);
}

'Sender' function could be in another file:

DWORD WINAPI Sender(LPVOID pParam)
{
  ...
}