Pessoal, se alguem puder me ajudar…
Estou desenvolvendo um programa para meu TCC…
Para deixar ele mais bonito, resolvi colocar um background no jDesktopPane, porém não consegui. Meu professor falou para eu colocar um jLabel e colocar uma imagem dentro do jDesktopPane.
Fiz isso, mas quando clico para abrir um JInternalFrame dentro do jDesktopPane, aparece o seguinte erro:
run:
Exception in thread "AWT-EventQueue-0" java.lang.IllegalArgumentException
at org.netbeans.lib.awtextra.AbsoluteLayout.addLayoutComponent(Unknown Source)
at java.awt.Container.addImpl(Container.java:1127)
at javax.swing.JLayeredPane.addImpl(JLayeredPane.java:231)
at javax.swing.JDesktopPane.addImpl(JDesktopPane.java:484)
at java.awt.Container.add(Container.java:417)
at semeando_futuro.view.Frm_Menu1.btn_CadAlunoActionPerformed(Frm_Menu1.java:361)
at semeando_futuro.view.Frm_Menu1.access$200(Frm_Menu1.java:19)
at semeando_futuro.view.Frm_Menu1$3.actionPerformed(Frm_Menu1.java:108)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2348)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
at java.awt.Component.processMouseEvent(Component.java:6535)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3324)
at java.awt.Component.processEvent(Component.java:6300)
at java.awt.Container.processEvent(Container.java:2236)
at java.awt.Component.dispatchEventImpl(Component.java:4891)
at java.awt.Container.dispatchEventImpl(Container.java:2294)
at java.awt.Component.dispatchEvent(Component.java:4713)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4888)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4525)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4466)
at java.awt.Container.dispatchEventImpl(Container.java:2280)
at java.awt.Window.dispatchEventImpl(Window.java:2750)
at java.awt.Component.dispatchEvent(Component.java:4713)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
at java.awt.EventQueue.access$500(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:709)
at java.awt.EventQueue$3.run(EventQueue.java:703)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86)
at java.awt.EventQueue$4.run(EventQueue.java:731)
at java.awt.EventQueue$4.run(EventQueue.java:729)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
CONSTRUÍDO COM SUCESSO (tempo total: 3 segundos)
Acho q o jLabel não está deixando o JInternalFrame abrir…
Alguém sabe como resolver isso?