Thanks, Sergey, for your response, I eventually thought so and built a workaround.
Best regards Christoph -----Original Message----- From: Sergey Bylokhov [mailto:sergey.bylok...@oracle.com] Sent: Dienstag, 19. Dezember 2017 08:19 To: Langer, Christoph <christoph.lan...@sap.com>; awt-dev@openjdk.java.net Subject: Re: <AWT Dev> Run AWT on MacOSX with -XstartOnFirstThread I think it is not possible. The code related to this initialization is located in: open/src/java.desktop/macosx/native/libawt_lwawt/awt/LWCToolkit.m + (void)starter:(BOOL)wasOnMainThread headless:(BOOL)headless { ........ ........ if (forceEmbeddedMode) { AWT_STARTUP_LOG(@"in SWT or SWT/WebStart mode"); // Init a default NSApplication instance instead of the NSApplicationAWT. // Note that [NSApp isRunning] will return YES after that, though // this behavior isn't specified anywhere. We rely on that. NSApplicationLoad(); } if (![app isRunning]) { AWT_STARTUP_LOG(@"+[AWTStarter startAWT]: ![app isRunning]"); // This is where the AWT AppKit thread parks itself to process events. [NSApplicationAWT runAWTLoopWithApp: app]; } else { // Proceed to exit this call as there is no reason to run the NSApplication event loop. ..... AWT skips initialization of AppKit if it was run using "-XstartOnFirstThread" option. On 07/11/2017 07:39, Langer, Christoph wrote: > Hi, > > I've got a question to the experts: I have a tool that launches the > Eclipse Framework (with SWT). When I start the JVM on MacOSX, I (have > to) set the option -XstartOnFirstThread. However, I want to do some work > with AWT before launching Eclipse/SWT. But as the AWT NSLoop is not > activated in that case, AWT stuff is not working. Is there any chance I > can run the AWT NSLoop manually before Swing is active? Is that possible > from within Java code? I don't find this topic well documented... > > Thanks in advance for any hints. > > Best regards > > Christoph > -- Best regards, Sergey.