wmi - How to know if IEEE 1394 (FireWire) is connected to my Windows 7? -
my computer has ieee 1394 (firewire) input. how programmatically know if 1394 connected windows 7?
you can use win32_1394controllerdevice wmi class.
c++ - Function signature as a function template parameter -
i'd use function signature template argument. works great classes, when try same trick function templates, msvc throws error: error c2768: 'func' : illegal use of explicit template arguments here's code: template <typename signature> void func(); template <typename r, typename a1> void func<r(a1)>(); what should make work? you cannot partially specialize function template, not supported language. can create partially specialized class template static member function, , possibly trampoline function instantiate class template , invoke static function. something this: namespace detail { template<typename signature> struct helper; template<typename r, typename a1> struct helper<r(a1)> { static void call() { // stuff r , a1... } }; } template<typename signature> void func() { detail::helper<signature>::call(); }
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