THREAD Command 1 THREAD Start or stop 4GL logic in a thread. THREAD START thread_name THREAD STOP thread_name The THREAD command is used to either execute logic into a new thread or stop a running thread. ProLinga-4GL is an event driven environment. All responses to events should be quick. For processes that require a long(er) time to execute, they can be started in a separate thread. Similar like a background process, however the logic executed in a thread can contact the main foreground thread to update screen widgets for instance. At this stage threads can not be nested (yet). thread_name Any data reference as well as hard coded string holding the name of a thread. 0 ERROR "Order print batch could not be started." SEVERITY Error ENDIF . . . . . . THREAD STOP printOrders IF THREADSTATUS <> 0 ERROR "Order print batch could not be stopped or has already finished." SEVERITY Error ENDIF . . . . . . ]]> Logic executed in a thread can check with the built-in function THREADEXIT() if a THREAD STOP command has been issued. None.