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Re: Windows can't take cartooning screenshots due to security policy with Android

Cross-posted to 3 groups.

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On 05/04/2025 09:09, Marion wrote:
> On Fri, 4 Apr 2025 23:42:43 +0100, David wrote :
> 
> 
>> Here's the answer given:-
>>
>> https://chatgpt.com/share/67f06002-92c0-8013-a73b-15b87b5f9a23
> 
> Thanks for that direct link to "Using adb to take screenshots on Android
> when it's blocked" which is the same issue I'm having with FLAG_SECURE
> since scrcpy mirrors Android two-feet tall onto Windows using ADB.
> 
> The hope is that adb operates at a lower level than does Android screencap.
> Hence, the suggestion is to try the command below on my Windows PC.
>   C:\> adb shell screencap -p /sdcard/screenshot.png
> 
> I didn't need the next line of the suggestion but others might need it:
>   C:\> adb pull /sdcard/screenshot.png .
> 
> Since my entire Android phone is already a Windows drive letter, that puts
> the screenshot onto Windows (effectively from the Windows command line).
> 
> I just used it to answer my sister (who texts a LOT!!!!!!!!) such that I
> could see her looooooooong text in an Irfanview window while I typed up a
> response in the Android text window using the Windows keyboard & mouse.
> 
> You can open multiple Android mirror on Windows but they're all the same so
> you need to open a few historically to read these "three pages of text".
> 
> But then I hit upon a solution using the screen capture command above!
> 
> I just kept hitting the Windows keyboard "F3" key to capture the next
> scroll (people shouldn't abuse texting by figuring out how to type well!).
> 
> Since the phone is on Windows in every way, the main issue is just keeping
> the mouse focus on the correct window when going back & forth between them.
> 
> OK. I'm done with my three-page text back to my sister, and I'm ready to
> test the adb screenshot feature against the toonify app that restricts it.
> 
> Hmm. That's interesting. Three things to note about what happened.
> 1. The phone screen shows the toonified image (of course)
> 2. The two-foot-tall scrcpy mirror of the phone on Android showed black
> 3. The ADB command did not cause an error - but it didn't create an image
> 
> On a FLAG_SECURE, it just did nothing. No error. But no screenshot. Drat.
> Apparently ADB's screencap command is blocked by the FLAG_SECURE setting.
> 
> When screencap tries to read the frame buffer of a secure window, the
> system is apparently returning successfully a completely blank buffer.
> 
> So adb doesn't complain. It got nothing. It saved nothing.
> There must be a way around this though. There always is. But what?

Marion,

Please ask that question directly of ChatGPT - it's FREE! (And really good!)

https://chatgpt.com/

HTH

-- 
David

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Thread

Windows can't take cartooning screenshots due to security policy with Android Marion <marion@facts.com> - 2025-04-04 22:01 +0000
  Re: Windows can't take cartooning screenshots due to security policy with Android David <David.is@home.today> - 2025-04-04 23:42 +0100
    Re: Windows can't take cartooning screenshots due to security policy with Android Marion <marion@facts.com> - 2025-04-05 08:09 +0000
      Re: Windows can't take cartooning screenshots due to security policy with Android David <David.is@home.today> - 2025-04-05 09:54 +0100
        Re: Windows can't take cartooning screenshots due to security policy with Android Marion <marion@facts.com> - 2025-04-05 09:18 +0000
          Re: Windows can't take cartooning screenshots due to security policy with Android Marion <marion@facts.com> - 2025-04-05 09:32 +0000
            Re: Windows can't take cartooning screenshots due to security policy with Android David <David.is@home.today> - 2025-04-05 12:04 +0100
      Re: Windows can't take cartooning screenshots due to security policy with Android Andy Burns <usenet@andyburns.uk> - 2025-04-09 09:15 +0100
        Re: Windows can't take cartooning screenshots due to security policy with Android sms <scharf.steven@geemail.com> - 2025-04-10 09:44 -0700
          Re: Windows can't take cartooning screenshots due to security policy with Android Marion <marion@facts.com> - 2025-04-11 11:14 +0000
    Re: Windows can't take cartooning screenshots due to security policy with Android sms <scharf.steven@geemail.com> - 2025-04-05 07:46 -0700
      Re: Windows can't take cartooning screenshots due to security policy with Android Marion <marion@facts.com> - 2025-04-05 20:27 +0000
        Re: Windows can't take cartooning screenshots due to security policy with Android Marion <marion@facts.com> - 2025-04-06 05:22 +0000
          Re: Windows can't take cartooning screenshots due to security policy with Android Marion <marion@facts.com> - 2025-04-06 05:47 +0000
            Re: Windows can't take cartooning screenshots due to security policy with Android Paul <nospam@needed.invalid> - 2025-04-06 03:03 -0400
              Re: Windows can't take cartooning screenshots due to security policy with Android Marion <marion@facts.com> - 2025-04-06 08:07 +0000
                Re: Windows can't take cartooning screenshots due to security policy with Android Paul <nospam@needed.invalid> - 2025-04-06 04:59 -0400
                Re: Windows can't take cartooning screenshots due to security policy with Android Marion <marion@facts.com> - 2025-04-06 10:42 +0000
  Re: Windows can't take cartooning screenshots due to security policy with Android Alan <nuh-uh@nope.com> - 2025-04-04 15:49 -0700
    Re: Windows can't take cartooning screenshots due to security policy with Android Hank Rogers <Hank@nospam.invalid> - 2025-04-04 19:56 -0500
      Re: Windows can't take cartooning screenshots due to security policy with Android Marion <marion@facts.com> - 2025-04-06 08:57 +0000
        Re: Windows can't take cartooning screenshots due to security policy with Android Marion <marion@facts.com> - 2025-04-06 11:06 +0000
  Re: Windows can't take cartooning screenshots due to security policy with Android Paul <nospam@needed.invalid> - 2025-04-04 22:25 -0400
    Re: Windows can't take cartooning screenshots due to security policy with Android Marion <marion@facts.com> - 2025-04-05 07:29 +0000
  Re: Windows can't take cartooning screenshots due to security policy with Android Arno Welzel <usenet@arnowelzel.de> - 2025-04-06 13:35 +0200
  Re: Windows can't take cartooning screenshots due to security policy with Android Alan <nuh-uh@nope.com> - 2025-04-11 19:33 -0700

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