Calling any multi-thread wizards. Here is a copy of the relevant parts of my main function...

CWinApp theApp; //the application's handle? not sure...

using namespace std;

UINT callProcessThread(LPVOID minutesSpent); //worker thread function, process output
UINT initializeProgram(LPVOID flag); //worker thread function, load MCR
void inputCalculateOutput(void); // function that sorts data and calls callProcessThread

int _tmain(int argc, TCHAR* argv[], TCHAR* envp[])
{   HANDLE threadHand = GetCurrentThread();
	CWinThread *startThread;
    int nRetCode = 0, priority;

	SetPriorityClass(threadHand, HIGH_PRIORITY_CLASS);
	SetThreadPriority(threadHand, THREAD_PRIORITY_NORMAL);

    //initialize the MCR
    startThread = AfxBeginThread(initializeProgram, 
		                         &nRetCode,
		                         THREAD_PRIORITY_HIGHEST); 

	std::cout << "Initializing, please wait.\n";

	// initialize MFC and print and error on failure
    while(INFINITE)
	{if(WaitForSingleObject(*startThread, INFINITE)
	                              == WAIT_OBJECT_0)
	 {//select a priority class for the program...
	  std::cout << "Select a priority class for the program\n"
          << "1) Idle\n2) Below Normal\n3) Normal\n4) Above Normal\n"
          << "5) High\n6) Highest\n\n >> ";
       
	  if(std::cin >> priority)
	  {
	   switch(priority)
	   {
		case 1:
         SetPriorityClass(threadHand,IDLE_PRIORITY_CLASS);
		 SetThreadPriority(threadHand,THREAD_PRIORITY_BELOW_NORMAL);
			break;
		case 2:
		 SetPriorityClass(threadHand,BELOW_NORMAL_PRIORITY_CLASS);
		 SetThreadPriority(threadHand,THREAD_PRIORITY_BELOW_NORMAL);
			break;
		case 3:
		 SetPriorityClass(threadHand,NORMAL_PRIORITY_CLASS);
		 SetThreadPriority(threadHand,THREAD_PRIORITY_NORMAL);
			break;
		case 4:
		 SetPriorityClass(threadHand,ABOVE_NORMAL_PRIORITY_CLASS);
		 SetThreadPriority(threadHand,THREAD_PRIORITY_ABOVE_NORMAL);
			break;
		case 5:
		 SetPriorityClass(threadHand,HIGH_PRIORITY_CLASS);
		 SetThreadPriority(threadHand,THREAD_PRIORITY_HIGHEST);
			break;
		case 6:
		 SetPriorityClass(threadHand,REALTIME_PRIORITY_CLASS);
		 SetThreadPriority(threadHand,THREAD_PRIORITY_TIME_CRITICAL);
			break;
	    } 
	    inputCalculateOutput(); //take input, calculate output...
	    break;
	  }
       else
	   {cin.ignore(100000,'\n');
		cin.clear();
		break;
	   }
     }
   }

	 return nRetCode;
}

As you can see, I am trying to allow the user to set the priority class of the program through the command line. No matter what selection is made, when I check the priorities through task manager application.exe is always 'normal' priority. Additionally I cannot make one instance of application.exe run with priority over another instance of application.exe. Should I switch threadHand for theApp ? or am I doing something else wrong? Does anyone know of a sure fire way for me to set the priority class of my program? (For example explorer.exe defaults to 'High' priority according to task manager... I want to be able to do that!) Is there a utility to view threads and how they tick on and off of the processor?

SetPriorityClass takes the handle of the process, not the thread's handle. So you need to have

HANDLE hProcess = GetCurrentProcess();

Is there a utility to view threads and how they tick on and off of the processor?

You might use
Process Explorer

ah! I didn't even notice that! That certainly would make a difference I imagine...

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