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oleacc: Add AccessibleObjectFromPoint implementation. 

Based on a patch by Alex Henrie.

Signed-off-by: Piotr Caban <piotr@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
(cherry picked from commit 92f4f4a4c1)
Signed-off-by: Michael Stefaniuc <mstefani@winehq.org>
This commit is contained in:
Piotr Caban 2021-11-25 18:55:07 +01:00 committed by Michael Stefaniuc
parent 4ed070302f
commit b45ad23033
1 changed files with 65 additions and 6 deletions
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71
dlls/oleacc/main.c
View File

@ -325,18 +325,77 @@ LRESULT WINAPI LresultFromObject( REFIID riid, WPARAM wParam, LPUNKNOWN pAcc )
return atom;
}
HRESULT WINAPI AccessibleObjectFromPoint( POINT ptScreen, IAccessible** ppacc, VARIANT* pvarChild )
{
FIXME("{%d,%d} %p %p: stub\n", ptScreen.x, ptScreen.y, ppacc, pvarChild );
return E_NOTIMPL;
}
static void variant_init_i4( VARIANT *v, int val )
{
V_VT(v) = VT_I4;
V_I4(v) = val;
}
HRESULT WINAPI AccessibleObjectFromPoint( POINT point, IAccessible** acc, VARIANT* child_id )
{
IAccessible *cur;
HRESULT hr;
VARIANT v;
HWND hwnd;
TRACE("{%d,%d} %p %p\n", point.x, point.y, acc, child_id);
if (!acc || !child_id)
return E_INVALIDARG;
*acc = NULL;
V_VT(child_id) = VT_EMPTY;
hwnd = WindowFromPoint(point);
if (!hwnd)
return E_FAIL;
hwnd = GetAncestor(hwnd, GA_ROOT);
hr = AccessibleObjectFromWindow(hwnd, OBJID_WINDOW, &IID_IAccessible, (void **)&cur);
if (FAILED(hr))
return hr;
if (!cur)
return E_FAIL;
V_VT(&v) = VT_EMPTY;
while (1)
{
hr = IAccessible_accHitTest(cur, point.x, point.y, &v);
if (FAILED(hr))
{
IAccessible_Release(cur);
return hr;
}
if (V_VT(&v) == VT_I4)
{
*acc = cur;
variant_init_i4(child_id, V_I4(&v));
return S_OK;
}
else if (V_VT(&v) == VT_DISPATCH)
{
IAccessible_Release(cur);
hr = IDispatch_QueryInterface(V_DISPATCH(&v), &IID_IAccessible, (void**)&cur);
VariantClear(&v);
if (FAILED(hr))
return hr;
if (!cur)
return E_FAIL;
}
else
{
VariantClear(&v);
IAccessible_Release(cur);
FIXME("unhandled variant type: %d\n", V_VT(&v));
return E_NOTIMPL;
}
}
return S_OK;
}
HRESULT WINAPI AccessibleObjectFromEvent( HWND hwnd, DWORD object_id, DWORD child_id,
IAccessible **acc_out, VARIANT *child_id_out )
{