User gets error when running my app

[MISV]

Unable to create file "/Users/*username*/.config/MyApp/reg.xml": Permission denied.

Press OK to ignore and risk data corruption.

Press Abort to kill the program.

But researching right now...

[MISV]

Okay, so somehow this gives an error on the users system,.

If it is a Lazarus error (and not MacOS error) maybe this will solve it:

Code: Pascal  [Select][+][-]

1.     try
2.       TmpOpen := TmpReg.OpenKey(FRegPath, True);
3.     except
4.       TmpOpen := False;
5.     end;
6.  

I will try that and hear if that resolves the error. (My software can function without access to .config / registry)

[MISV]

User used 11.2.1

(Never received this error before. Not sure if this maybe apply generally to Lazarus / Big Sur when using TRegistry)

[jwdietrich]

One of the problems with your code is that it tries to store preferences in a hidden folder. According to Apple's guidelines, the settings of an application are to be stored in the Preferences folder. See https://wiki.lazarus.freepascal.org/Locating_macOS_app_support,_preferences_folders for a platform-sensitive method how to get the path to the correct folder.

[MISV]

I believe this problem is caused by TRegistry Lazarus/LCL wrapper on Mac.

https://wiki.freepascal.org/fcl-registry

example, under non-Windows operating systems it creates the per user XML file (HKEY_CURRENT_USER) reg.xml in the /home/[user]/.config/application_name/ directory

More precisely in xregreg.inc in TRegistry.SysRegCreate > GetAppConfigDir

...

Just submitted it:
https://bugs.freepascal.org/view.php?id=38495

[trev]

The root cause is GetAppConfigDir - see also https://bugs.freepascal.org/view.php?id=20706

[MISV]

I wonder how to best work around this until a solution is found. Fix the source (but have it wiped next time an update is made)

I would prefer to keep using the TRegistry since it is a kinda nice workaround enabling me to keep my code portable.

Just asking in case I am missing an obvious solution

[trev]

Use the Core Foundation CFPreferences functions which automatically take care of the preference file and its location.

There is also the higher level Cocoa NSUserDefaults class, but it has had a checkered history of intermittent failures starting with iOS 9 and macOS 10.13 over several years of updates, so is best avoided.

[MISV]

Creating (forcedirectories) the directories used by TRegistry seems to work. But I have added some extra checks now so even if everything fails program continues to work