HINSTANCE hmod;

BOOL APIENTRY DllMain(HINSTANCE hInstance, DWORD dwReason, LPVOID lpReserved)
{
    // Remove this if you use lpReserved
    hmod = hInstance;
    return 1;
}
明明只有一个_DllMain却提示：
nafxcwd.lib(dllmodul.obj) : error LNK2005: _DllMain@12 already defined in KeybHook.obj
nafxcwd.lib(dllmodul.obj) : warning LNK4006: _DllMain@12 already defined in KeybHook.obj; second definition ignored
   Creating library Debug/KeybHook.lib and object Debug/KeybHook.exp
Debug/KeybHook.dll : fatal error LNK1169: one or more multiply defined symbols found

被封装在  CWinApp 中吗 ？？