Any idea what's causing this crash yet? Is there some way I can at least detect the error and handle it myself instead of crashing? James From: fpc-pascal <fpc-pascal-boun...@lists.freepascal.org> On Behalf Of James Richters via fpc-pascal Sent: Monday, January 11, 2021 9:37 AM To: 'FPC-Pascal users discussions' <fpc-pascal@lists.freepascal.org> Cc: James Richters <james.richt...@productionautomation.net>; 'Nikolay Nikolov' <nick...@gmail.com> Subject: Re: [fpc-pascal] PTCGraph Causing 217 I've made a sample program that demonstrates the problem https://gist.github.com/Zaaphod/936901eb5f31df5044d2bd36a7cf6c91 When I was testing it, I found out that the problem shows up also with PTCCRT.Keypressed, Procedure to re-produce bug in Putimage 1. Run program in Windows 2. Do something that activates Windows User Account Control like open an administrator command prompt 3. Program crashes with exitcode 217 EAccessViolation: Access violation on line 108 which is doing Putimage, even if you answer NO to user account control Procedure to re-produce bug in Keypressed 1. UnComment //Until ptccrt.Keypressed; Comment out //Until ptccrt.Keypressed; 2. Run Program in Windows 3. Do something that activates Windows User Account Control like open an administrator command prompt 4. Program crashes with exitcode 217 EAccessViolation: Access violation on line 114 which is doing Keypresed (sometimes the error is on putimage) Other things that cause it: Unplug monitor and plug it back in Change Display settings Putting computer to sleep Unknown reasons. system just idle James From: fpc-pascal <fpc-pascal-boun...@lists.freepascal.org <mailto:fpc-pascal-boun...@lists.freepascal.org> > On Behalf Of Nikolay Nikolov via fpc-pascal Sent: Thursday, January 7, 2021 2:17 AM To: fpc-pascal@lists.freepascal.org <mailto:fpc-pascal@lists.freepascal.org>
Cc: Nikolay Nikolov <nick...@gmail.com <mailto:nick...@gmail.com> > Subject: Re: [fpc-pascal] PTCGraph Causing 217 On 1/6/21 5:44 PM, James Richters via fpc-pascal wrote: I've been having issues with PTCGraph causing a runtime Error 217 : EAccessViolation: Access violation at seemingly random times in my program. The error is always on a line with either GetImage() or PutImage() but not the same one. The program can run for hours with no problems doing GetImage and PutImage every second or so, and then it just stops with this error. I know that if something disrupts the screen. like if I install a program and the Windows user control thing asks for a password, that ALWAYS causes this to happen, or if I unplug my monitor and plug it back in.. I find that this happens.. but lately it seems to happen for no reason. I don't know enough about it to track it down, but is there some way I Can find out what causes this and prevent the error? It would be nice if I could detect the condition that causes this issue, and if I find that the issues is present, just stop trying to do Getimage() or PutImage() until the condition is resolved. Can you provide an example program and exact steps to reproduce this bug? Nikolay
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