java - JComboBox inside a Border causes IllegalComponentStateException -

-

i found useful code create titled border contains component title santhosh kumar t: componenttitledborder. employed using check box, when decided use combo box, shows text part of combo box not drop down button:

screenshot of component

when click on combo box following exception:

exception in thread "awt-eventqueue-0" java.awt.illegalcomponentstateexception: component must showing on screen determine location @ java.awt.component.getlocationonscreen_notreelock(unknown source) @ java.awt.component.getlocationonscreen(unknown source) @ javax.swing.jpopupmenu.show(unknown source) @ javax.swing.plaf.basic.basiccombopopup.show(unknown source) @ javax.swing.plaf.basic.basiccombopopup.togglepopup(unknown source) @ javax.swing.plaf.basic.basiccombopopup$handler.mousepressed(unknown source) @ java.awt.component.processmouseevent(unknown source) @ javax.swing.jcomponent.processmouseevent(unknown source) @ java.awt.component.processevent(unknown source) @ java.awt.container.processevent(unknown source) @ java.awt.component.dispatcheventimpl(unknown source) @ java.awt.container.dispatcheventimpl(unknown source) @ java.awt.component.dispatchevent(unknown source) @ test.componenttitledborder.dispatchevent(componenttitledborder.java:74) @ test.componenttitledborder.mousepressed(componenttitledborder.java:96) @ java.awt.component.processmouseevent(unknown source) @ javax.swing.jcomponent.processmouseevent(unknown source) @ java.awt.component.processevent(unknown source) @ java.awt.container.processevent(unknown source) @ java.awt.component.dispatcheventimpl(unknown source) @ java.awt.container.dispatcheventimpl(unknown source) @ java.awt.component.dispatchevent(unknown source) @ java.awt.lightweightdispatcher.retargetmouseevent(unknown source) @ java.awt.lightweightdispatcher.processmouseevent(unknown source) @ java.awt.lightweightdispatcher.dispatchevent(unknown source) @ java.awt.container.dispatcheventimpl(unknown source) @ java.awt.window.dispatcheventimpl(unknown source) @ java.awt.component.dispatchevent(unknown source) @ java.awt.eventqueue.dispatcheventimpl(unknown source) @ java.awt.eventqueue.access$200(unknown source) @ java.awt.eventqueue$3.run(unknown source) @ java.awt.eventqueue$3.run(unknown source) @ java.security.accesscontroller.doprivileged(native method) @ java.security.protectiondomain$1.dointersectionprivilege(unknown source) @ java.security.protectiondomain$1.dointersectionprivilege(unknown source) @ java.awt.eventqueue$4.run(unknown source) @ java.awt.eventqueue$4.run(unknown source) @ java.security.accesscontroller.doprivileged(native method) @ java.security.protectiondomain$1.dointersectionprivilege(unknown source) @ java.awt.eventqueue.dispatchevent(unknown source) @ java.awt.eventdispatchthread.pumponeeventforfilters(unknown source) @ java.awt.eventdispatchthread.pumpeventsforfilter(unknown source) @ java.awt.eventdispatchthread.pumpeventsforhierarchy(unknown source) @ java.awt.eventdispatchthread.pumpevents(unknown source) @ java.awt.eventdispatchthread.pumpevents(unknown source) @ java.awt.eventdispatchthread.run(unknown source)

i have looked @ google results find exception, none of them helped me understand specific problem. illustrate, provide sscce:

package test;  import java.awt.borderlayout; import java.awt.dimension;  import javax.swing.defaultcomboboxmodel; import javax.swing.jcombobox; import javax.swing.jcomponent; import javax.swing.jframe; import javax.swing.jpanel; import javax.swing.swingutilities; import javax.swing.uimanager;  @suppresswarnings("serial") public class problem extends jcomponent {      jpanel area = new jpanel();     jcombobox<string> cb;      public problem() {         area.setpreferredsize(new dimension(100,100));         string[] options = {"one", "two"};         cb = new jcombobox<string>(new defaultcomboboxmodel<string>(options));         cb.seteditable(false);         cb.setselectedindex(0);          this.setlayout(new borderlayout());         area.setborder(new componenttitledborder(cb, area, uimanager.getborder("titledborder.border")));         this.add(area, borderlayout.center);     }      public static void main(string[] args) {          swingutilities.invokelater(new runnable() {              @override             public void run() {                 jframe frame = new jframe();                 frame.setdefaultcloseoperation(jframe.exit_on_close);                 frame.add(new problem());                 frame.pack();                 frame.setvisible(true);             }         });     } }

please me fix , understand nature of error.

define jpanel borderlayout , add jcombobox panel. assign componenttitledborder panel rather jcombobox directly.

update:

jpanel p = new jpanel();  p.setlayout(new borderlayout());  p.add(cb, borderlayout.center);  area.setborder(new componenttitledborder(p, area,       uimanager.getborder("titledborder.border")));

Comments

Post a Comment

Popular posts from this blog

windows - Single EXE to Install Python Standalone Executable for Easy Distribution -

-
i used pyinstaller create standalone exe file pyqt project. did not use single file option because exe created single file option takes long open. therefore, pyinstaller created dist folder contains bunch of files including program.exe file. create setup.exe file place contents of dist folder in program directory , create shortcut in start menu , on desktop. want super simple user. maybe setup.exe files when download program cnet. found inno-setup, looks promising. however, not know if there special considerations because program standalone program create python/pyqt program. thanks! have experience task? there program using task not know about? inno-setup or nsis easiest use. tell them files include , put them , create nice installer you. wrote short tutorial on experiences using innosetup might find helpful: http://www.blog.pythonlibrary.org/2008/08/27/packaging-wxpymail-for-distribution/ note tutorial based around wxpython app wrote, concepts same.
Read more

c# - Access objects in UserControl from MainWindow in WPF -

-
i have simple xaml, how can change text property of textblock in usercontrol1 mainwindow ? <window x:class="refactorxaml.mainwindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:refactorxaml="clr-namespace:refactorxaml" title="mainwindow" height="350" width="525"> <grid> <grid.rowdefinitions> <rowdefinition height="100"></rowdefinition> <rowdefinition height="100"></rowdefinition> </grid.rowdefinitions> <grid> <refactorxaml:usercontrol1></refactorxaml:usercontrol1> </grid> <grid grid.row="1"> <button>change text</button> </grid> </grid> </window> <usercon...
Read more

javascript - How to name a jQuery function to make a browser's back button work? -

-
i'm trying write function ajaxyfy web site, works perfect, except function button. that's have now: function loading() { if (typeof history.pushstate !== "undefined") { var historycount = 0; $('.menu-item, .logo').on('click','a',function(e){ e.preventdefault(); $(this).data('clicked', true); if ($(this).is('.logo a')) { var homepage = $(this).attr('href'); function1(homepage); history.pushstate(null, null, homepage); } else if ($(this).is('.projects a')) { var projects = $(this).attr('href'); function2(projects); history.pushstate(null, null, projects); } else { var pages = $(this).attr('href'); function3(pages); history.pushstate(null, null, pages); ...
Read more