Hello, According to the Microsoft documentation and the Mono source code, the event handler should be called in the thread that launch the BakgroundWorker (The BakgroundWorker uses an AsyncOperation to post event message on the creator thread).
I have made a small sample to see what going on, and here is the results: - You don't have to put a NSAutoreleasePool in the DoWork handler unless you are manipulating Cocoa classes - You HAVE to put a NSAutoreleasePool in the ProgressChanged handler to avoid memory leak. Seems like the running thread is not the main one. - You HAVE to put a NSAutoreleasePool in the RunWorkerCompleted handler to avoid memory leak. Seems like the running thread is not the main one. - You can modifiy directly label or progress indicator values on the handler, although they are not run on the main thread (read: dangerous). The best is to use the InvokeRequired flag and Invoke method to avoid cross-thread problems. Regards, Laurent Etiemble. 2009/10/1 Mario De Clippeleir <mari...@sydec.be>: > Hey, > > I did use the invoke stuff on a textfield and the progressbar, and that does > remove the "autorelease" message. > However, how can i use this on the NSWindow that is showing the progressbar > (displayed as a sheet), because that one is still generating some > problems... > > The application is in Multithreaded mode, but the core is written as a C# > dll, which includes the backgroundworker to report the progress, so i think > NSThreadRunner is out of the question, no ? > > Br, > > Mario > Kenny Clement wrote: >> >> Hi, >> >> The way I do it, I make sure the MonobjC objects are only used on 1 >> thread. >> Make sure all stuff on the backgroundworker threads is pure mono only, if >> you need to use MonobjC objects, throw events and invoke those on your >> 'cocoa' thread. >> >> However, a better way, is probably described on the Monobjc site: >> >> http://www.monobjc.net/index.php?page=multithreading >> >> Is your application in Multithreaded mode? >> If it already is, can you use NSThreadRunner instead of .NET >> backgroundworkers? >> >> - Kenny >> >> Mario De Clippeleir wrote: >>> >>> Hi, >>> >>> I am using a backgroudworker to show progress of a task. This compiles >>> and runs fine (it shows the progress), however i always get a lot of >>> notifications : "object of class autoreleased with no pool in place". >>> So i defined a NSAutoreleasepool in the DoWork event and release it after >>> it has done all the work, but still i have the same problem. >>> >>> I'm pretty much stuck here....Any help ? >>> >>> Thanks, >>> >>> Mario >>> >> >> -- >> >> *Kenny Clement >> *Software Developer** >> >> image003* >> *Tel. +32 9 233 68 86 >> Fax +32 9 240 10 39 >> kenny.clem...@nomadesk.com <mailto:kenny.clem...@nomadesk.com> >> twitter.com/nomadesk <http://twitter.com/nomadesk> >> >> Confidentiality Notice: >> /This message, together with any attachments, is intended only for the use >> of the individual or entity to which it is addressed. It may contain >> information that is confidential and prohibited from disclosure. If you are >> not the intended recipient, you are hereby notified that any dissemination >> or copying of this message or any attachment is strictly prohibited. If you >> have received this item in error, please notify the original sender and >> destroy this item, along with any attachments./ > >
