AppletTalk.com Java discussions newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  1.4 Drag & Drop JTree          AppletTalk.com Forum Index -> Java GUI Toolkits View previous topic :: View next topic   Author Message nicola Guest Posted: Wed Nov 12, 2003 5:50 pm    Post subject: 1.4 Drag & Drop JTree I'm trying to implement dnd between two JTrees in a splitpane. When the drag leaves the bounds of a tree I get an exception from the dragExit method. I've written a custom TransferHandler which works fine except for the exception which occurs whilst the drag is not over a tree component. Any suggestions would be greatly appreciated Thanks Nicola java.lang.NullPointerException at javax.swing.plaf.basic.BasicTreeUI$TreeDropTargetListener.restoreComponentState at javax.swing.plaf.basic.BasicDropTargetListener.dragExit at javax.swing.TransferHandler$SwingDropTarget.dragExit(Unknown Source) at sun.awt.dnd.SunDropTargetContextPeer.processExitMessage at sun.awt.dnd.SunDropTargetContextPeer.access$700 at sun.awt.dnd.SunDropTargetContextPeer$EventDispatcher.dispatchExitEvent at sun.awt.dnd.SunDropTargetContextPeer$EventDispatcher.dispatchEvent at sun.awt.dnd.SunDropTargetEvent.dispatch at java.awt.Component.dispatchEventImpl at java.awt.Container.dispatchEventImpl Back to top ak Guest Posted: Sat Nov 15, 2003 10:44 am    Post subject: Re: 1.4 Drag & Drop JTree without code sample we cant say anything. Probably you making some mistake with DataFlavor... "nicola" <jonesn (AT) harlosh (DOT) com> schrieb im Newsbeitrag news:3dbaa99b.0311120950.164e7c (AT) posting (DOT) google.com... Quote: I'm trying to implement dnd between two JTrees in a splitpane. When the drag leaves the bounds of a tree I get an exception from the dragExit method. I've written a custom TransferHandler which works fine except for the exception which occurs whilst the drag is not over a tree component. Any suggestions would be greatly appreciated Thanks Nicola java.lang.NullPointerException at javax.swing.plaf.basic.BasicTreeUI$TreeDropTargetListener.restoreComponentSt ate Quote: at javax.swing.plaf.basic.BasicDropTargetListener.dragExit at javax.swing.TransferHandler$SwingDropTarget.dragExit(Unknown Source) at sun.awt.dnd.SunDropTargetContextPeer.processExitMessage at sun.awt.dnd.SunDropTargetContextPeer.access$700 at sun.awt.dnd.SunDropTargetContextPeer$EventDispatcher.dispatchExitEvent at sun.awt.dnd.SunDropTargetContextPeer$EventDispatcher.dispatchEvent at sun.awt.dnd.SunDropTargetEvent.dispatch at java.awt.Component.dispatchEventImpl at java.awt.Container.dispatchEventImpl 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.