C++ 樣板化函數指標呼叫

brainFuckCppCall.cpp

/* @file: brainFuckCppCall.cpp
 * @author: aaaddress1@chroot.org
 */
#include <stdio.h>
#include <Windows.h>

template<class T> struct func {
	explicit func(FARPROC ptr) : _ptr(ptr) {}
	operator T() { return reinterpret_cast<T>(_ptr); }
	FARPROC _ptr;
};

int main(void) {
  func<decltype(&MessageBoxA)> msgbox(GetProcAddress(LoadLibraryA("user32"), "MessageBoxA"));
  msgbox(0, "hi", "info", 0);
  return 0;
}