My MSAA Hook dll is expected to be loaded into all process's memory. in 32 bits Win7 it works.
But in win7 64 bits some process can load MSAAHook.dll 64 bits cannot be loaded into some 64 bits process. Why does this happens?

= ::SetWinEventHook(EVENT_MIN,
EVENT_MAX,
m_hModule,
MSAAHook::WinEventProc,
0,
0,
WINEVENT_INCONTEXT | WINEVENT_SKIPOWNTHREAD);