How to HitTest an item of a List Ctrl owned by another thread

I succeeded in obtaining a CListCtrl item info using HitTest() when the List
Ctrl is owned by my current thread. But when I tried HitTest an item of a
List Ctrl owned by other threads such as Explorer folder view, I failed. My
code is as follows:

// current cursor pos
CPoint pt;

// Suppose pWnd is the window owned by another thread
CListView* pListView = static_cast<CListView*>(pWnd);

// Get the reference of List Ctrl
CListCtrl& listCtrl = pListView->GetListCtrl();

if(listCtrl.GetItemCount() != 0)
{
::GetCursorPos(&pt);

// Get the client pos for HitTest
pListView->ScreenToClient(&pt);

LVHITTESTINFO lvhti;
lvhti.pt = pt;

// Now do HitTest() to get the item at current cursor pos
int nItem = listCtrl.HitTest(&lvhti);

if(nItem != -1)
{
...
}

...
}

The nItem always equals to -1 even if the mouse is on the list ctrl item,
which indicates that the HitTest() fails.

I also tried SubItemHitTest() and even AttachThreadInfo() but all seem not
work.

Can anyone help me solve the problem? Thanks.