win32或者MFC程序编译时,编译器默认会加入下面的lib:
kernel32.lib、user32.lib、gdi32.lib、winspool.lib、comdlg32.lib、advapi32.lib、shell32.lib、le32.lib
这些lib无形中就增加了exe文件的大小,很多函数在当前程序都没使用。使用 GetProcAddress (地址钩子)动态加载,使用哪个函数加载哪个函数即可:
typedef int (_stdcall *MESSAGEBOXW)(long , wchar_t*, wchar_t*, int);
typedef int (_stdcall *GETMESSAGE)(MSG*, void*, void*, void*);
typedef int (_stdcall *DISPATCHMESSAGE)(MSG*);
int hMoudle = LoadLibraryW(L"User32.dll");
MESSAGEBOXW MessageBoxW = (MESSAGEBOXW)GetProcAddress(hMoudle, "MessageBoxW");
GETMESSAGE GetMessageW = (GETMESSAGE)GetProcAddress(hMoudle, "GetMessageW");
DISPATCHMESSAGE DispatchMessageW = (DISPATCHMESSAGE)GetProcAddress(hMoudle, "DispatchMessageW");
FreeLibrary(hMoudle);