Disable Image/Screen Capture
in [VB.NET]
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From: AP on 27 Jan 2010 09:00 Is it possible to programmatically disable users from capturing an image of a form (e.g. using PrintScreen or Screen Capture software). I know one can regularly clear the clipboard but this does not protect against Screen Capture software that uses GetDesktopWindow() or GetDC (). Any ideas ?
From: Andrew Morton on 27 Jan 2010 09:12 AP wrote: > Is it possible to programmatically disable users from capturing an > image of a form (e.g. using PrintScreen or Screen Capture software). > > I know one can regularly clear the clipboard but this does not protect > against Screen Capture software that uses GetDesktopWindow() or GetDC > (). > > Any ideas ? How about not displaying the form in the first place? Unless you can ensure the user is using a protected HDMI route to their monitor, there's not much you can do about it, and even then they can use a pencil and paper to copy the information. Andrew
From: Family Tree Mike on 27 Jan 2010 09:24 On 1/27/2010 9:00 AM, AP wrote: > Is it possible to programmatically disable users from capturing an > image of a form (e.g. using PrintScreen or Screen Capture software). > > I know one can regularly clear the clipboard but this does not protect > against Screen Capture software that uses GetDesktopWindow() or GetDC > (). > > Any ideas ? Clearing the clipboard in a timer, would be a horrible thing to do to a user. They would probably suspect a virus if they were also using something like email while your app was running, and they had a legitimate copy/paste operation to perform. -- Mike
From: Herfried K. Wagner [MVP] on 27 Jan 2010 09:36 Andrew -- Am 27.01.2010 15:12, schrieb Andrew Morton: >> Is it possible to programmatically disable users from capturing an >> image of a form (e.g. using PrintScreen or Screen Capture software). >> >> I know one can regularly clear the clipboard but this does not protect >> against Screen Capture software that uses GetDesktopWindow() or GetDC >> (). >> >> Any ideas ? > > How about not displaying the form in the first place? Unless you can ensure > the user is using a protected HDMI route to their monitor, there's not much > you can do about it, and even then they can use a pencil and paper to copy > the information. .... or take a photograph using a digital camera. -- M S Herfried K. Wagner M V P <URL:http://dotnet.mvps.org/> V B <URL:http://dotnet.mvps.org/dotnet/faqs/>
From: Andrew Morton on 27 Jan 2010 09:47
Herfried K. Wagner [MVP] wrote: > ... or take a photograph using a digital camera. I couldn't be bothered to write down even more ways to do it :) Andrew |