Can local variable be passed as parameter into a new thread?

[forester]

Can local variable be passed as the parameter for a new created thread procedure? Here is the example code:

void CDLG::some_function()
{
	CString strFileName="abc.doc"; 
	//local variable, can it be valid for being passed into the following new thread???	
        //Can strFileName still be accessed from within the stack of thread procedure? 
	::AfxBeginThread(ProcessContentThread,(LPVOID)&strFileName);
}

UINT ProcessContentThread(LPVOID p) 
{
	CString* pstr=(CString*)p
	CString strFile=*pstr;
	//process the file
	...

}

There is another method using variable on the heap,

void CDLG::some_function()
{
	CString strFileName="abc.doc";  
	CString* pstrFN=new CString(strFileName); 	
	::AfxBeginThread(ProcessContentThread,(LPVOID)pstrFN);
}

UINT ProcessContentThread(LPVOID p) 
{
	CString* pstr=(CString*)p
	CString strFile=*pstr;
	delete pstr;
	//process the file
	...

}

I test these code, both methods work as expected, but I doubt whether the first method is a good way. OR if only the second method is the correct way to pass a parameter to a thread. Thank you for help!