By multithreading I assume you mean the AS3 workers? The main thread is the application just use: http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/flash/des ktop/NativeApplication.html#exit%28%29
-----Original Message----- From: moushuai00 [mailto:moushua...@hotmail.com] Sent: 12 August 2013 15:50 To: users@flex.apache.org Subject: Multiple ActionScript Workers Problem Hi All: I used the air multithreading features in my project. Before exiting my project I had closed all workers, But the main thread will not be closed! Why?? My OS is win XP, Air sdk version is 3.5 and IDE version is FB 4.6 moushuai00