BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  How to prevent com server app from being terminated          BorlandTalk.com Forum Index -> C++ Builder (ActiveX) View previous topic :: View next topic   Author Message Torsten Anders Guest Posted: Mon Mar 07, 2005 12:47 pm    Post subject: How to prevent com server app from being terminated My com server app should do some lengthy work in the background, but must also be able to run as stand alone. If the app is started manually everything is ok, but if started by ole automation is seems to be terminated directly after form create has finished, but form close and form close query aren't called. The client app just makes Bind() SendData() Unbind() I must call Unbind directly, but how can I prevent the server from termination or how and where termination is done. May thanks in advance! Torsten Back to top JJ Guest Posted: Mon Mar 07, 2005 4:42 pm    Post subject: Re: How to prevent com server app from being terminated When an ole object is created, its reference count is incremented by 1. This reference count is decremented when the object is released. COM will only unload your object when this reference count is 0. This is the reason why your stand-a-lone server stays open when it is started manually and closes when it is loaded by COM. As for how to keep it open when loaded by COM, I guess you can artificially add one more to your reference count when you return the object to the client although I don't recommend it. If you need to do some cleanup before shutting down, then it's probably better to put your shutdown code somewhere else. Hope this help. Jeff www.ruamkwamkid.com "Torsten Anders" <anders (AT) tasoft (DOT) org> wrote Quote: My com server app should do some lengthy work in the background, but must also be able to run as stand alone. If the app is started manually everything is ok, but if started by ole automation is seems to be terminated directly after form create has finished, but form close and form close query aren't called. The client app just makes Bind() SendData() Unbind() I must call Unbind directly, but how can I prevent the server from termination or how and where termination is done. May thanks in advance! Torsten Back to top Torsten Anders Guest Posted: Tue Mar 08, 2005 2:54 am    Post subject: Re: How to prevent com server app from being terminated Thanks, hor your help. I had the idea too and increase the ref counter now when the program is started in automation mode and decrease the counter when all the work is down. But what's really confusing: Why the FormClose method of the main form isn't called? Torsten "JJ" <chingwaah (AT) hotmail (DOT) com> schrieb im Newsbeitrag news:422c846b (AT) newsgroups (DOT) borland.com... Quote: When an ole object is created, its reference count is incremented by 1. This reference count is decremented when the object is released. COM will only unload your object when this reference count is 0. This is the reason why your stand-a-lone server stays open when it is started manually and closes when it is loaded by COM. As for how to keep it open when loaded by COM, I guess you can artificially add one more to your reference count when you return the object to the client although I don't recommend it. If you need to do some cleanup before shutting down, then it's probably better to put your shutdown code somewhere else. Hope this help. Jeff www.ruamkwamkid.com "Torsten Anders" <anders (AT) tasoft (DOT) org> wrote in message news:422c4d49$1 (AT) newsgroups (DOT) borland.com... My com server app should do some lengthy work in the background, but must also be able to run as stand alone. If the app is started manually everything is ok, but if started by ole automation is seems to be terminated directly after form create has finished, but form close and form close query aren't called. The client app just makes Bind() SendData() Unbind() I must call Unbind directly, but how can I prevent the server from termination or how and where termination is done. May thanks in advance! 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