Catch the content text of a MessageBox from an other program

Hi everybody,

After long researches I want to submit you my problem...

I want to read the text of a MessageBox (or pop-up) window from an other program but the thing is, this MessageBox is not a child of his main program so i can't access to it...

this is what I tried without success...

hwndChild = FindWindowEx(hwnd, IntPtr.Zero, null, null);
                while (hwndChild != IntPtr.Zero)
                {
                    GetWindowText(hwndChild, bld, 255);
                    Console.WriteLine(bld.ToString());
                    //SendMessage(hwndChild, WM_SYSCOMMAND, SC_CLOSE, 0);
                    hwndChild = FindWindowEx(hwnd, hwndChild, null, null);
                }

OR

hwndChild = FindWindowEx(hwnd, IntPtr.Zero, null, null);
                while (hwndChild != IntPtr.Zero)
                {
                    IntPtr lgTexte = SendMessage(hwndChild, WM_GETTEXTLENGTH, 0, 0);
                    #if STRING
                    string sbTitre = new string('0',lgTexte);
                    #else
                    StringBuilder sbTitre = new StringBuilder((int)lgTexte);
                    #endif
                    GetControlText((int)hwndChild, WM_GETTEXT, (int)lgTexte + 1, sbTitre);
                    Console.WriteLine("hwnd={0} => {1}", hwndChild, sbTitre);
                    hwndChild = FindWindowEx(hwnd, hwndChild, null, null);
                }

Tags: C# (C# 3.0)