@msdn=http://search.microsoft.com/search/results.aspx?qu=$$$ @pinvoke=http://pinvoke.net/$$$.htm Summary: The AccessibleObjectFromWindow function retrieves the address of the specified interface to the object associated with the given window. !!!!C# Signature: [DllImport("oleacc.dll")] internal static extern int AccessibleObjectFromWindow( IntPtr hwnd, uint id, ref Guid iid, [In, Out, MarshalAs(UnmanagedType.IUnknown)] ref object ppvObject); !!!!VB .Net Signature: Private Declare Function AccessibleObjectFromWindow Lib "oleacc" (ByVal Hwnd As Int32, _ ByVal dwId As Int32, _ ByRef riid As Guid, _ <MarshalAs(UnmanagedType.IUnknown)> ByRef ppvObject As Object) As Int32 !!!!User-Defined Types: None. !!!!Notes: None. !!!!Tips & Tricks: Please add some! !!!!Sample Code: !!!!Visual Basic Private Declare Function AccessibleObjectFromWindow Lib "oleacc" (ByVal Hwnd As Int32, _ ByVal dwId As Int32, _ ByRef riid As Guid, _ <MarshalAs(UnmanagedType.IUnknown)> ByRef ppvObject As Object) As Int32 Declare Function GetForegroundWindow Lib "user32" () As Int32 Private Sub Form2_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Load Dim varChild As Accessibility.IAccessible Dim hWnd As Int32 = GetForegroundWindow() Dim ID As Int32 = 0 Dim IID_IAcce As Guid = New Guid("618736E0-3C3D-11CF-810C-00AA00389B71") Dim aaVal As Int32 = AccessibleObjectFromWindow(hWnd, ID, IID_IAcce, varChild) End Sub !!!!C# internal enum OBJID : uint { WINDOW = 0x00000000, SYSMENU = 0xFFFFFFFF, TITLEBAR = 0xFFFFFFFE, MENU = 0xFFFFFFFD, CLIENT = 0xFFFFFFFC, VSCROLL = 0xFFFFFFFB, HSCROLL = 0xFFFFFFFA, SIZEGRIP = 0xFFFFFFF9, CARET = 0xFFFFFFF8, CURSOR = 0xFFFFFFF7, ALERT = 0xFFFFFFF6, SOUND = 0xFFFFFFF5, } Guid guid = new Guid("{618736E0-3C3D-11CF-810C-00AA00389B71}"); object obj = null; int retVal = AccessibleObjectFromWindow(hwnd, (uint)OBJID.WINDOW, ref guid, ref obj); accessible = (IAccessible) obj; !!!!Alternative Managed API: The ManagedWindowsApi project (http://mwinapi.sourceforge.net) provides a SystemAccessibleObject class to access accessible objects, that can be instantiated from a window. Documentation: AccessibleObjectFromWindow@msdn on MSDN
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