Called by the framework to retrieve the selected children of this object.
Receives information about which children are selected. See pvarChildren in IAccessible::get_accSelection in the Platform SDK.
This function is part of MFC'ssupport.
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::get_accSelection in the Platform SDK.