public static extern uint AccessibleChildren( IAccessible paccContainer, int iChildStart, int cChildren, [Out] object[] rgvarChildren, out int pcObtained);

Declare Function AccessibleChildren Lib "oleacc.dll" (ByVal paccContainer As IAccessible, ByVal iChildStart As Integer, ByVal cChildren As Integer, <[Out]()> ByVal rgvarChildren() As Object, ByRef pcObtained As Integer) As UInteger

Function AccessibleChildren(ByVal paccContainer As IAccessible, ByVal iChildStart As Integer, ByVal cChildren As Integer, <[Out]()> ByVal rgvarChildren() As Object, ByRef pcObtained As Integer) As UInteger

public static extern uint AccessibleObjectFromEvent( IntPtr hwnd, uint dwObjectID, uint dwChildID, out IAccessible ppacc, [MarshalAs(UnmanagedType.Struct)] out object pvarChild);

        out IAccessible ppacc, [MarshalAs(UnmanagedType.Struct)] out object pvarChild);

This function retrieves the lowest-level accessible object in the object hierarchy at the given point specified in screen coordinates where 0, 0 is the upper left corner. If the element at the point is not an accessible object (that is, does not support IAccessible), then the function retrieves the IAccessible interface of the parent object. The parent object must provide information about the child element through the IAccessible interface.

     object varChildID;

     IntPtr success = AccessibleObjectFromPoint(pt, out accObj, out varChildID);

     ChildID = (int)varChildID;

This function retrieves the lowest-level accessible object in the object hierarchy at a given point in screen coordinates where (0, 0) is the upper left corner. If the element at the point is not an accessible object (that is, does not support IAccessible), then the function retrieves the IAccessible interface of the parent object. The parent object must provide information about the child element through the IAccessible interface.

     object varChildID;

     IntPtr success = AccessibleObjectFromPoint(pt, out accObj, out varChildID);

     ChildID = (int)varChildID;

    Dim varChild As Accessibility.IAccessible

    Dim aaVal As Int32 = AccessibleObjectFromWindow(hWnd, ID, IID_IAcce, varChild)

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