Display the confidential info, then trap ANY mouse move or key press. You'd have to get in front of these events (on before mouse move, on before key press) and clear the confidential info (which could include a comment at the end of it - "This message will self-destruct on any keyboard or mouse activity". :-)
I'm sure there's still a way around that, but it might be harder. Dave -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Wednesday, 16 February 2005 1:07 p.m. To: NZ Borland Developers Group - Delphi List Subject: RE: [DUG] Odd-ball question There are still tools such as SnagIt that can copy anything on the screen as a bitmap, even the online e-Books, and I imagine you could feed them through OCR to get the text. Bob Osborn > > Check out the keyboard hook facility in the Windows API, as you may be able to disable the printscreen button (or any other key combination) while your app has focus. > > I've seen it done by the people who have online e-Books, where you can read the book onscreen, but not print or copy it in any way. > > cheers > > Gary > > > At 09:55 on 16/02/2005 you wrote > >To : [email protected] > >CC : >From: John Bird, [EMAIL PROTECTED] > >Content Type: text/html > >Attached: > > >Is there a way to display confidential information on a screen in such a way > >that it can be seen but cannot be copied - eg via copy and paste. > > >For instance putting text in labels does not allow normal select and copy, > >but one can still do a printscreen and capture the screen as an image. > > >The only way I have thought of is to put text in a pop-up hint, as these > >normally disappear when a key such as printscreen is pressed. It is not > >however that easy to put many lines of text in a hint. > > >Any suggestions? > > > > > >John B > > > > > > > > > > > > >=================================== > > > >_______________________________________________ > >Delphi mailing list > >[email protected] > >http://ns3.123.co.nz/mailman/listinfo/delphi > > > > > > > >=================================== > > > >No virus found in this incoming message. > >Checked by AVG Anti-Virus. > >Version: 7.0.300 / Virus Database: 265.8.8 - Release Date: 14/02/2005 > > > > Ref#: 41006 > > > No virus found in this outgoing message. > Checked by AVG Anti-Virus. > Version: 7.0.300 / Virus Database: 265.8.8 - Release Date: 14/02/2005 > > _______________________________________________ > Delphi mailing list > [email protected] > http://ns3.123.co.nz/mailman/listinfo/delphi > > _______________________________________________ Delphi mailing list [email protected] http://ns3.123.co.nz/mailman/listinfo/delphi
