Header files are missing for some C++ functions

[MyCatAlex]

I need to define a few separate threads and synchronize the process in my C++ application. I cannot find any headers anywhere to define the variables and constants that are given in C++ examples. For instance:

It is so called controlling function (Multithreading: Creating Worker Threads in MFC)

UINT MyThreadProc( LPVOID pParam )
{
CMyObject* pObject = (CMyObject*)pParam;

if (pObject == NULL ||
!pObject->IsKindOf(RUNTIME_CLASS(CMyObject)))
return 1; // if pObject is not valid

// do something with 'pObject'

return 0; // thread completed successfully
}

And how about this function:

CWinThread* AfxBeginThread(
AFX_THREADPROC pfnThreadProc,
LPVOID pParam,
int nPriority = THREAD_PRIORITY_NORMAL,
UINT nStackSize = 0,
DWORD dwCreateFlags = 0,
LPSECURITY_ATTRIBUTES lpSecurityAttrs = NULL);

The highlighted words are undefined.

Is there a unified method to quickly find headers that will define all the missing variables, etc.

Thank you, - MyCatAlex

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