C / C++ / MFC

void DLLHookFunc(etc., wsprintf);
//then later do this
wsprintf(parameter1, ...);

int w_printf(
int r, /* row */
int c, /* column */
int color,/* color */
unsigned flags, /* formating flags */
const char *format, /* format (see printf())
... /* variable arguments */
)
{
	int n=-1;
	char *buf=NULL;
	size_t size=0;
	va_list ap;
	va_start( ap,format );
	while( n == -1 ) {
		size += 128;								/* change size */
		if( buf ) free(buf);						/* free old buffer */
		buf = (char *)malloc(size); 				/* allocate new buffer */
		if( !buf ) n = 0;							/* allocation failer */
		else n = _vsnprintf(buf,size,format,ap);	/* do basic formating */
	}
	va_end(ap);
	if( buf ) {
		n = w_pfmt( r,c,color,flags,buf );
		free(buf);
	}
	return n;
}

template<typename T1>
struct MyStruct
{
   typedef pair<string, T1<big>&</big>> CLASSINFO;
   string className;
   static CLASSINFO make_pair <string clsName, const T1<big>&</big> clsRef>
   // etc.
};
//later I did this
typedef int (*PF)(MyStruct<big>&</big> mySt);    // the compiler doesn't like this

typedef int (*PF)(MyStruct<T1><big>&</big> mySt);   // it didn't like this either

1) Open you document class and find Serialize().
2) if( ar.IsStoring() )
   {
       ar.Write(...); // write data to file (save/save as)
   }
   else
   {
       ar.Read(...); // read data from file (open)
   }

#pragma comment (lib, "delayimp.lib")

Project
  +-- Properties
        +-- Linker
              +-- Input
                    +-- Delay Loaded DLLs -> oleacc.dll

Project
  +-- Properties
        +-- Linker
              +-- Advanced
                    +-- Delay Loaded DLL -> Support Unload (/DELAY:UNLOAD)