AppletTalk.com Java discussions newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  JComboBox freezes gui          AppletTalk.com Forum Index -> Java GUI Toolkits View previous topic :: View next topic   Author Message TADsince1995 Guest Posted: Wed Aug 16, 2006 2:51 pm    Post subject: JComboBox freezes gui Hello all, I'm writing an application that uses swing, but I've a really weird problem. In this app I use JLabels, JButtons, menus, textbox and JComboBox, everything works fine but not JComboBox. When user clicks on JComboBox the entire gui freezes and don't response anymore, I tried to insert a messagebox on mousepressed event and I noticed that the messagebox doesn't appear, I think that even the event doesn't start. I tried to search with google but I didn't find nothing specific about it. I'm using Java 1.4.2 on linux, but this problem appears on Windows too. Can someone help me? Thank you in advance, and sorry for my very poor english! TAD Back to top Bart Cremers Guest Posted: Wed Aug 16, 2006 4:30 pm    Post subject: Re: JComboBox freezes gui It would be easier to help out if you could post some simple example code displaying the problem you have. I've used JComboBoxes many times before and never had one of them freeze the gui. Bart Back to top Ian Wilson Guest Posted: Wed Aug 16, 2006 7:23 pm    Post subject: Re: JComboBox freezes gui TADsince1995 wrote: Quote: Hello all, I'm writing an application that uses swing, but I've a really weird problem. In this app I use JLabels, JButtons, menus, textbox and JComboBox, Some of those don't start with a J, you're not mixing AWT and Swing components are you? Quote: everything works fine but not JComboBox. When user clicks on JComboBox the entire gui freezes and don't response anymore, I tried to insert a messagebox on mousepressed event and I noticed that the messagebox doesn't appear, I think that even the event doesn't start. I tried to search with google but I didn't find nothing specific about it. I use JComboBoxes without freezing the GUI. I guess there's something in your code. http://mindprod.com/jgloss/sscce.html Quote: I'm using Java 1.4.2 on linux, but this problem appears on Windows too. Can someone help me? When my GUI appears to freeze I usually find there's some console messages telling me why (easy to see using Eclipse). Is this not the case for you? Quote: Thank you in advance, and sorry for my very poor english! Your English seems pretty good to me. When worried about language problems, I'd speak Java instead (see SSCCE above). Back to top johnmmcparland Guest Posted: Thu Aug 17, 2006 8:48 pm    Post subject: Re: JComboBox freezes gui TADsince1995 wrote: Quote: Hello all, I'm writing an application that uses swing, but I've a really weird problem. In this app I use JLabels, JButtons, menus, textbox and JComboBox, everything works fine but not JComboBox. When user clicks on JComboBox the entire gui freezes and don't response anymore, I tried to insert a messagebox on mousepressed event and I noticed that the messagebox doesn't appear, I think that even the event doesn't start. I tried to search with google but I didn't find nothing specific about it. I'm using Java 1.4.2 on linux, but this problem appears on Windows too. Can someone help me? Thank you in advance, and sorry for my very poor english! TAD Obviously a self contained example would add weight to my guess but often the interface can freeze if you try to do too much in your event handlers. If you are doing a time consuming action (sorting a very large list etc) then you should startup a new thread to do this. In the event handler poll for this thread to end then carry on. In the time between the UI will be able to repaint itself. Back to top Display posts from previous: All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First         AppletTalk.com Forum Index -> Java GUI Toolkits All times are GMT Page 1 of 1   Jump to: Select a forum Java Newsgroups----------------Java DiscussionsWeb-based java games comp.lang.java 3D Graphics API's for Java Java: Support and criticism Java System Announcements comp.lang.java.api JavaBeans Java and CORBA Java and Databases comp.lang.java.developer Java GUI Toolkits Java Help comp.lang.java.javascript JVM, native methods and hardware comp.lang.java.misc Java Language Programming Security and Java comp.lang.java.setup Java Software Tools comp.lang.java.tech ibm.software.java.linux  Non-English Java Newsgroups----------------Java Language (German)Language Java (Français)Java (Italian)  You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum Powered by phpBB © 2001, 2006 phpBB Group SEO toolkit © 2004-2006 webmedic.