openProcessIDs

Typefunction
DictionaryLCS
LibraryLiveCode Script
Syntax
the openProcessIDs
openProcessIDs()
Summary

Returns the process IDs of processes that have been opened with the open process command, but have not yet exited.

Introduced1.0
OSmac, windows, linux
Platformsdesktop, server
Example
the openProcessIDs
put last line of the openProcessIDs into previousProcessID
Values
NameTypeDescription
return

The openProcessIDs function returns a list of integers, one per line.

RelatedKeyword: line
Command: launch, kill, open process
Glossary: exit, integer, command, return, process
Control Structure: function
Securityprocess
Description

Use the openProcessIDs function to communicate with processes you have opened with the open process command.

Certain Unix commands such as "kill" require a process ID. You can use these commands to act on processes you opened by using the shell command :

put "kill -9" && line 1 of the openProcessIDs into whatToExecute
get shell(whatToExecute)

On Mac OS and OS X systems, there is no process ID. Instead, the openProcessIDs function returns a list of integers. The first application started up (with the open process or launch command) during a session is assigned the number 1, the second is assigned the number 2, and so on. After an application quits, its process number is not re-used, so you can use the openProcessIDs function to determine how many times LiveCode has started up an application during the current session.

The list of process IDs is in the same order used by openProcesses function, which is the same order that the processes were opened.

Programs that were not started by LiveCode are not included in the list returned by the openProcessIDs function.