... completeness:Accessing Excel Functionality Using the C API 2298.2.3 Calling Excel worksheet functions in the DLL using Excel4 (), Excel1 2() Excel exposes all of the built -in worksheet functions through Excel4 () /Excel1 2().Calling ... DLL_THREAD_DETACH.234 Excel Add -in Development in C/C++int __stdcall Excel4 v(int, xloper *, int, const xloper *[]);int __stdcall Excel1 2v(int, xloper *, int, const xloper12 *[]);Table 8.4 Excel4 v() argumentsArgument ... thread-unsafe calls.(continued overleaf )238 Excel Add -in Development in C/C++8 .5 WRAPPING THE C APIThe Excel4 () /Excel1 2() and Excel4 v() /Excel1 2v() functions can be wrappedup in a number of ways...