openProcessIDs

Type

function

Summary

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

Syntax

the openProcessIDs

openProcessIDs()

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.

Examples

the openProcessIDs

put last line of the openProcessIDs into previousProcessID

Value

Name	Type	Description
return		The openProcessIDs function returns a list of integers, one per line.

Related

command: launch, kill, open process

control structure: function

glossary: exit, integer, command, return, process

keyword: line

Compatibility and Support

Introduced

LiveCode 1.0

OS

mac

windows

linux

Platforms

desktop

server