Wondering how this is possible
in [Visual Basic]
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From: Steve on 23 Dec 2008 19:52 On Dec 23, 7:39 pm, "Bill McCarthy" <B...(a)localhost.com> wrote: > Hi Steve, > > "Steve" <sredm...(a)rfcorp.com> wrote in message > > news:af6f1a1e-619f-4378-b9bb-e959d1977ee6(a)o4g2000pra.googlegroups.com > > > On Dec 23, 7:19 pm, "mayayana" <mayaXXy...(a)rcXXn.com> wrote: > >>> Does anyone know how this ispossible? > > >> You might check the class name given in Spy++. > >> Maybe it's notr really a textbox. That's not unusual. > >> At one point someone was looking to read the URL > >> in the Firefox address bar and it turned out that none > >> of that was actually a window. It was all painted. > > > As I said in my origianl post. I did just that and Spy++ says the > > class is "Edit" hence my confusion. > > I just did a quick test. Excuse the .Net code, but it shows the concept > easiest: > > Class TextBoxEx : Inherits TextBox > > Private Const WM_GETTEXT As Int32 = &HD > > Protected Overrides Sub WndProc(ByRef m As System.Windows.Forms.Message) > If m.Msg <> WM_GETTEXT Then > MyBase.WndProc(m) > End If > End Sub > > End Class > > That's basically subclassing a textbox, and swallowing any WM_GETTEXT > requests. The textbox works fine, but Spy can't read the text. Would that method thwart both Sendmessage with WM_GETTEXT and GetWindowText API (which may simply use the previous method I do not know) Thanks, Steve
From: Steve on 23 Dec 2008 19:53 On Dec 23, 7:39 pm, "Bill McCarthy" <B...(a)localhost.com> wrote: > Hi Steve, > > "Steve" <sredm...(a)rfcorp.com> wrote in message > > news:af6f1a1e-619f-4378-b9bb-e959d1977ee6(a)o4g2000pra.googlegroups.com > > > On Dec 23, 7:19 pm, "mayayana" <mayaXXy...(a)rcXXn.com> wrote: > >>> Does anyone know how this ispossible? > > >> You might check the class name given in Spy++. > >> Maybe it's notr really a textbox. That's not unusual. > >> At one point someone was looking to read the URL > >> in the Firefox address bar and it turned out that none > >> of that was actually a window. It was all painted. > > > As I said in my origianl post. I did just that and Spy++ says the > > class is "Edit" hence my confusion. > > I just did a quick test. Excuse the .Net code, but it shows the concept > easiest: > > Class TextBoxEx : Inherits TextBox > > Private Const WM_GETTEXT As Int32 = &HD > > Protected Overrides Sub WndProc(ByRef m As System.Windows.Forms.Message) > If m.Msg <> WM_GETTEXT Then > MyBase.WndProc(m) > End If > End Sub > > End Class > > That's basically subclassing a textbox, and swallowing any WM_GETTEXT > requests. The textbox works fine, but Spy can't read the text. Further, is there any way to get around this to retreive the text in the control? Thanks, Steve
From: expvb on 23 Dec 2008 20:07 "Steve" <sredmyer(a)rfcorp.com> wrote in message news:1771b856-c901-4acd-9b67-d9e2e231e7c7(a)p2g2000prf.googlegroups.com... > Would that method thwart both Sendmessage with WM_GETTEXT and > GetWindowText API (which may simply use the previous method I do not > know) Yes, but if you were using GetWindowText(), then try WM_GETTEXT because GetWindowText() doesn't always work, see the remarks section in the help for details. In either case, if the control is discarding WM_GETTEXT, then you may want to try other methods, such as sending EM_SETSEL/WM_COPY. Otherwise, you may have to do optical character recognition(OCR).
From: Bill McCarthy on 23 Dec 2008 20:18 Hi Steve, "Steve" <sredmyer(a)rfcorp.com> wrote in message news:4d49cbf5-f563-4d26-acc3-910ad56d4776(a)r37g2000prr.googlegroups.com > > Further, is there any way to get around this to retreive the text in > the control? > Possibly, but it really depends on what they have done to protect the code. You could try doing a select all and copy or EM_GETSELTEXT etc. On a less practical note you could try to search the processes memory as the string has to be somewhere, unless they encode it. Start digging there around EM_GETHANDLE ;) You could also try some of the acessibility API perhaps
From: Bill McCarthy on 23 Dec 2008 20:18
Hi Steve, "Steve" <sredmyer(a)rfcorp.com> wrote in message news:1771b856-c901-4acd-9b67-d9e2e231e7c7(a)p2g2000prf.googlegroups.com > On Dec 23, 7:39 pm, "Bill McCarthy" <B...(a)localhost.com> wrote: >> Hi Steve, >> >> "Steve" <sredm...(a)rfcorp.com> wrote in message >> >> news:af6f1a1e-619f-4378-b9bb-e959d1977ee6(a)o4g2000pra.googlegroups.com >> >>> On Dec 23, 7:19 pm, "mayayana" <mayaXXy...(a)rcXXn.com> wrote: >>>>> Does anyone know how this ispossible? >> >>>> You might check the class name given in Spy++. >>>> Maybe it's notr really a textbox. That's not unusual. >>>> At one point someone was looking to read the URL >>>> in the Firefox address bar and it turned out that none >>>> of that was actually a window. It was all painted. >> >>> As I said in my origianl post. I did just that and Spy++ says the >>> class is "Edit" hence my confusion. >> >> I just did a quick test. Excuse the .Net code, but it shows the >> concept easiest: >> >> Class TextBoxEx : Inherits TextBox >> >> Private Const WM_GETTEXT As Int32 = &HD >> >> Protected Overrides Sub WndProc(ByRef m As >> System.Windows.Forms.Message) If m.Msg <> WM_GETTEXT Then >> MyBase.WndProc(m) >> End If >> End Sub >> >> End Class >> >> That's basically subclassing a textbox, and swallowing any WM_GETTEXT >> requests. The textbox works fine, but Spy can't read the text. > > Would that method thwart both Sendmessage with WM_GETTEXT and > GetWindowText API (which may simply use the previous method I do not > know) > > Thanks, > Steve Yep. |