RE: [BULK] Re: Obtaining text from AfxWndW Windows

From: "Sean Farrow" <sean.farrow@xxxxxxxxxxxxxxxx>
To: <programmingblind@xxxxxxxxxxxxx>
Date: Mon, 10 Dec 2007 08:22:34 -0000
Hi all: 
Thanks for the help I'd hoped hooking wasn't the solution but there we
are need must.
Sean.

________________________________

From: programmingblind-bounce@xxxxxxxxxxxxx
[mailto:programmingblind-bounce@xxxxxxxxxxxxx] On Behalf Of jaffar
Sent: 10 December 2007 01:34
To: programmingblind@xxxxxxxxxxxxx
Subject: [BULK] Re: Obtaining text from AfxWndW Windows
Importance: Low


Hi.  For mfc, the drawing is done by the DC class.  All other objects
like RECT and Illipses are derived from it.  The DC class invokes the
Wm_paint object from the win32 API handler.  It is also worth noting
that The OnPaint object, another object of the DC class does the
painting of the windows and such.  Cheers!

        ----- Original Message ----- 
        From: Will Pearson <mailto:will@xxxxxxxxxxxxx>  
        To: programmingblind@xxxxxxxxxxxxx 
        Sent: Monday, December 10, 2007 8:48 AM
        Subject: Re: Obtaining text from AfxWndW Windows

        Hi Sean,
         
        WM_GETTEXT doesn't work with the AfxWnd windows used by MFC.  I
think they use some sort of different mechanism to handle their window
text and drawing.
         
        You could try looking at the control's MSAA properties using a
tool such as Inspect or AccExplorer, both of which are part of the MSAA
SDK tools.  If these shw information then you could get the IAccessible
object using something like AccessibleObjectFromWindow.  As it's a
custom control then whether MSAA is present depends on whether the C++
libraries team implemented MSAA for the custom controls contained within
MFC; The MSAA system won't proxy AfxWnd controls to my knowledge.
         
        The reason why I suspect JAWS picks it up is that it is being
detected by the off screen model in JAWS.  Whilst JAWS, and several
other screen readers, intercept the GDI drawing calls at the video
driver level you can replicate this functionality by hooking into the
GDI API.  If you want to go down this route then there are documents and
things on the web that explain API hooking better than I can.
         
        Will

                ----- Original Message ----- 
                From: Sean Farrow <mailto:sean.farrow@xxxxxxxxxxxxxxxx>

                To: programmingblind@xxxxxxxxxxxxx 
                Sent: Sunday, December 09, 2007 11:32 PM
                Subject: Obtaining text from AfxWndW Windows

                Hi: 
                I am trying to obtain text from an AfxWndW window.
Previously I have been able to obtain text from another control using
the SendMessageW function with the WM_GETTEXT message. These two
particular windows are in the same program and are also on the same
screen. 
                The program is the microsoft woutlook 2003 calendar. 
                in the window I want, neither the wm_gettext message
orthe GetWindowTextW functions work. Jaws however gives me the text.
Anyone got and ideas how to tacle this.
                I tryed msaa with the OBJID_WINDOW but there was no name
for the window.
                Any help apreciated
                Sean.
RE: [BULK] Re: Obtaining text from AfxWndW Windows

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