c++ SetWinEventHook issue with both 32 & 64 bit application - c++

Question

I'm trying to hook winevents like EVENT_SYSTEM_MOVESIZESTART and EVENT_SYSTEM_MOVESIZEEND with all desktop windows.
For this, I used SetWinEventHook().
Here's my sample code.
BOOL DlmSetEventHook()
{
if (hInstance == NULL)
return FALSE;
CoInitialize(NULL);
hWEventHook = SetWinEventHook(EVENT_SYSTEM_MOVESIZESTART, EVENT_SYSTEM_MOVESIZEEND, NULL, WinEventProc, NULL, NULL, WINEVENT_OUTOFCONTEXT );
if ( hWEventHook == NULL )
{
return FALSE;
}
return TRUE;
}
It's portion of Installed Hook.
void DlmRemoveEventHook()
{
WaitForSingleObject(hWEventHook, INFINITE);
UnhookWinEvent(hWEventHook);
CoUninitialize();
}
The above is for removing WinEvent Hook.
And this is HookProc Function.
void CALLBACK WinEventProc(
HWINEVENTHOOK hWinEventHook,
DWORD event,
HWND hwnd,
LONG idObject,
LONG idChild,
DWORD dwEventThread,
DWORD dwmsEventTime
)
{
IAccessible* pAcc = NULL;
VARIANT varChild;
HRESULT hr = AccessibleObjectFromEvent(hwnd, idObject, idChild, &pAcc, &varChild);
if ((hr == S_OK) && (pAcc != NULL))
{
if (event == EVENT_SYSTEM_MOVESIZESTART)
{
if (!(::GetWindowLong(hPaneWnd, GWL_STYLE) & WS_VISIBLE))
{
::ShowWindow(hPaneWnd, SW_SHOWNOACTIVATE);
::UpdateWindow(hPaneWnd);
}
}
if (event == EVENT_SYSTEM_MOVESIZEEND)
{
if ((::GetWindowLong(hPaneWnd, GWL_STYLE) & WS_VISIBLE))
{
::ShowWindow(hPaneWnd, SW_HIDE);
}
}
pAcc->Release();
}
}
The above codes are all in DLL. And I compiled DLL with x86 Debug method.
And I, of course, compiled client project with x86 Debug method.
My problem is that this hookproc listens for events which caused on only x64 bit apps.(I use Win10 x64).
It cannot listen for winevents of x86 bit apps.
I only know that 32 bit dll can only injected into 32 bit project and same thing on 64 bit dll.
But I think that it's not related to winevent hook.
What's wrong on my code? And Which things do I never know?