Called by the framework to retrieve the child element or child object at a given point on the screen.
virtual HRESULT accHitTest(
X-coordinate of the point to be hit tested (in screen units).
Y-coordinate of the point to be hit tested (in screen units).
Receives information identifying the object at the point specified by xLeft and yTop. See pvarID in IAccessible::accHitTest in the Windows SDK.
Returns S_OK on success, a COM error code on failure. See Return Values in IAccessible::accHitTest in the Windows SDK.
This function is part of MFC's Active Accessibility support.
Override this function in your CWnd-derived class if you have nonwindowed user interface elements (other than windowless ActiveX controls, which MFC handles).
For more information, see IAccessible::accHitTest in the Windows SDK.