AppletTalk.com Java discussions newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  Switching between JLabel and JComboBox at runtime?          AppletTalk.com Forum Index -> Java GUI Toolkits View previous topic :: View next topic   Author Message Andreas Guest Posted: Sat Sep 27, 2003 2:30 pm    Post subject: Switching between JLabel and JComboBox at runtime? Hi, I have searched the archives, but did not find the answer to my problem. So: In a JPanel (in a JInternalFrame) I use a JComponent. At startup a JLabel is set to this JComponent (JComponent theJComponent = theJLabel;) and the JLabel is properly shown. When a user performs a certain action (like pressing a button) I want to display a JComboBox instead of this JLabel (i.e. in the same place). I seem to be missing something, because I can't get it to work. After setting theJComponent = theJComboBox, I have tried all the validate/invalidate/revalidate/repaint on both the JComboBox, the JComponent and the JPanel, but nothing happens. Obviously I am doing something wrong. How should this be done? I am using JDK1.3.1. Thank you. /Andreas Back to top Erik A. Brandstadmoen Guest Posted: Sat Sep 27, 2003 6:19 pm    Post subject: Re: Switching between JLabel and JComboBox at runtime? Andreas wrote: Quote: In a JPanel (in a JInternalFrame) I use a JComponent. At startup a JLabel is set to this JComponent (JComponent theJComponent = theJLabel;) and the JLabel is properly shown. I assume that what you do after this is to add the JLabel to the JPanel. Quote: When a user performs a certain action (like pressing a button) I want to display a JComboBox instead of this JLabel (i.e. in the same place). I seem to be missing something, because I can't get it to work. After setting theJComponent = theJComboBox, What do you want to achieve by this? The only thing you achieve is to make the reference that once pointed to the JLabel that is displayed on the JPanel to point to another Component, i.e. the JComboBox. You haven't done anything with the components in the JPanel. You need to remove the JLabel and add a JComboBox in the same spot. I don't know what the rest of your layout looks like, but this should be no problem using a GridBagLayout or a CardLayout. Erik. Back to top Andreas Guest Posted: Sun Sep 28, 2003 10:47 am    Post subject: Re: Switching between JLabel and JComboBox at runtime? "Erik A. Brandstadmoen" <erikbra (AT) ifi (DOT) uio.no> skrev i meddelandet news:dxkdb.26196$os2.361785 (AT) news2 (DOT) e.nsc.no... Quote: What do you want to achieve by this? You haven't done anything with the components in the JPanel. Of course you are correct, and now it works like it should. This was embarrasingly stupid, and I guess I was just having a bad brain day (as opposed to bad hair day) or something. I'm gonna go and hide now. Thanks a lot Erik. Much appreciated. /Andreas 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.