[This is preliminary documentation and subject to change.]
The oleacc.dll dynamic link library sends this message to an Active Accessibility server application to retrieve information about an accessible object it contains.
wParam = (WPARAM)(DWORD) dwFlags;
lParam = (LPARAM)(DWORD) dwObjId;
Returns a value specifying the object's reference, a request for a standard object, or a COM error code otherwise. To return an object reference, use the LresultFromObject function. To request a standard accessible object, return zero. To fail the message, return a COM error code.
Oleacc.dll generates this message to retrieve object information in response to AccessibleObjectFromEvent, AccessibleObjectFromWindow or AccessibleObjectFromPoint function calls.
Applications should never send this message directly. It is sent only by oleacc.dll in response to AccessibleObjectFromPoint, AccessibleObjectFromEvent or AccessibleObjectFromWindow calls. However, server components must understand and handle it.