ThreadProc()
{
	1) string NameOfTheButtonToClick = "Close" // or anything;

	KeepLooping
	{
		FindtheButtonInTheDialogBox (NameOfTheButtonToClick ); Is fOund
		if Found Exist Loop
	}
}

FindtheButtonInTheDialogBox(NameOfTheButtonToClick)
	{
		 Enums All The Child Windows Of the dialogBox
		 That Internet Explorer Dispalys
   	         FOr that it passes the EnumChildWindowsProc Address To EnumChildWindows Win32APi Function

	}

EnumChildWindowsProc( )
{

		 When it finds the window with the given TExt
 		 Found = true 
		 I make it click it In DIalog Box


}



Once the file has been downloaded from INternet Explorer The programm has to
Display the INformation that i have programmed it to fetch.it does it well

Problem is this
i order to put this FIlename in save dialog box i am using Sendkeys.
ANd you know Sendkeys needs the Place to be in focus That brings the limitation to 
it.that i cant do anything else when it has to happen 

using WM_char with SendMessage has the same problem of focus
Wm_SETTEXT does not work on it while WM_GETTEXT works well
I was thinking if WM_SETTEXT has been disabled or what
in order to do that i wanted to get the wndproc address
and use my wndproc to proccess this dialog box messages

but Getwindowlong is not working and neither setwindowlong

[DllImport("User32", CharSet = CharSet.Auto,SetLastError = true)]
                unsafe public static extern System.IntPtr  GetWindowLong (
                                        System.IntPtr hWnd,
                                        System.Int32 nIndex  
                
                ) ;

i have even tried 
[DllImport("User32", CharSet = CharSet.Ansi, SetLastError = true)]
                unsafe public static extern System.IntPtr GetWindowLongA(
                                        System.IntPtr hWnd,
                                        System.Int32 nIndex

                );




System.IntPtr WinProc1 = 
			GetWindowLongA( HwndDlg , 
			GETWINDOWLONG.GWL_WNDPROC
                        ) ;

What is wrong