Check if helper app is running from the trash

Targets macOS
1

My app has a helper app which should quit if the main app is moved to the trash. How do I do that?

App.ExecutableFile.Parent.Parent.Parent does not change if the app is moved to the trash.

The I tried to use ProcessMBS but this grabbed some random process:

dim AppFolderitemFromProcess as FolderItem
dim theProcesses as processMBS
dim myCode as string = app.ExecutableFile.Parent.Parent.Parent.getBundleID
theProcesses = new processMBS
theProcesses.GetFirstProcess
do
if theProcesses.BundleID = myCode then
AppFolderitemFromProcess = theProcesses.Path
exit do
end if
loop Until not theProcesses.GetNextProcess

The result was /usr/sbin/universalaccessd which doesn’t make any sense at all.

Any ideas?

2

Do you have Einhugur? I use FileSystemWatcher in FileFreeze to watch a specific file (the one you set up). The plugin provides event based notifications when a file changes.

Maybe it might be better at noticing when the parent app has been moved to the trash?

3

I have the Einhugur plugins. I’ve used the equivalent in the MBS plugins but the name of the function escapes me at the moment. Not a bad idea. A user is unlikely to have multiple versions of my app on the computer.

4

It doesn’t change, indeed, but FolderItem.exists property becomes false. At least, you know it has been moved.

5

Clever idea. I’ll check that.