Rename when it is in process??

[alemrantareq]

Hi everybody, How are you? Hope fine. I use rev ent 4.0 & I wonder that application made by rev can be renamed while it's in process. How is it possible & how could I stop this?

[Klaus]

Hi,

I use rev ent 4.0 & I wonder that application made by rev can be renamed while it's in process. How is it possible...

I have no idea, but I think this is an OS issue.

...how could I stop this?

You can't! Simply because you cannot control the users behavior outside of your app!


Best

Klaus

[alemrantareq]

....You can't! Simply because you cannot control the users behavior outside of your app!

But the other applications except rev can't rename while they're in process.

[kray]

Can I ask why you need to rename a running Rev app?

[alemrantareq]

No, I've no need to rename running rev app, rather I need to prevent it, because I'm developing a program, and if you rename & run it while it's in process, it'll cause program crashes.

[dunbarx]

Wouldn't setting the cantModify property do the trick?

Craig Newman

[Klaus]

I am sure he means renaming the app/exe in the FInder/Explorer while it is running.

I personally would not care, if the user of my app wants to do something dumb, hey, its her/his machine
Free will(y) etc...


Best

Klaus

[wsamples]

Do you know why it crashes after the renaming? Perhaps there's a way to address that. For instance, if you've stored a reference to the app folder name before the name change that reference will no longer work but as inelegant as it may feel, doing the whole process of discovering the actual current location every time you need to use it should prevent that particular problem. Maybe just another silly question, but how did this issue occur to you? Ordinarily it would seem an extremely unusual thing for a user to be doing. Is there something about your app's function that would make this more likely than usual?

[alemrantareq]

I'm working with some font fixing issues. Before my app open, it checks some errors; so while it is already in process to fix the errors, if any user rename & run it twice then it'll surely can't do the script well as well as the system will be crashed.

cantModify property not works in this issue. Does address property could help? How? Please, give me a sample. Thanks....

[kray]

When does your stack crash after it's been renamed? On the next user action or only on certain actions?

[alemrantareq]

I've made a script which will check before starting whether the imagename of the app exists in the tasklist or not; if exists it'll show an error message & quit, but not the previous one. To make this script applicable, I don't want to let the users to rename while its running. Because if it's renamed & run, it'll show the renamed image in the tasklist checking that the app is not running in memory.

[kray]

So is this the scenario you're trying to prevent?

1. User launches "Foo.exe", check function runs
2. While "Foo.exe" is in the list of running processes, user renames app to "Bar.exe"
3. User launches "Bar.exe"
4. A second instance of the app is launched and runs the check function again, creating a crash

Of so, have you tried using a "relaunch" message trap (see "relaunch" in the LC docs). I know it works with a mutex, but I'm not sure if the relaunch handler will trigger if the app is renamed...

[alemrantareq]

Thanks kray, relaunch message works perfectly even the app name is renamed.

[Klaus]

Ah, good to know that the name of an app/exe in the Finder/Desktop is just a "Label" and not the "real" process name!

[kray]

Nice! Wasn't sure that would work, but in retrospect it makes sense (each app has a unique GUID, so even if renamed the GUID would be the same).