Reproduce Steps:
1. On Cinnabar11 for Solaris (X86 and sparc), mozilla1.7(2004/05/31), english locale.
2. Running jgraphpad on terminal. Then, select text and press Ctrl + Space button. At this time, an exception was thrown:
bash-2.05b$ jgraphpad
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at javax.swing.plaf.basic.BasicInternalFrameTitlePane.showSystemMenu(Bas icInternalFrameTitlePane.java:279)
at javax.swing.plaf.basic.BasicInternalFrameUI$1.actionPerformed(BasicIn ternalFrameUI.java:148)
at javax.swing.SwingUtilities.notifyAction(SwingUtilities.java:1571)
at javax.swing.JComponent.processKeyBinding(JComponent.java:2726)
at javax.swing.KeyboardManager.fireBinding(KeyboardManager.java:255)
at javax.swing.KeyboardManager.fireKeyboardAction(KeyboardManager.java:2 04)
at javax.swing.JComponent.processKeyBindingsForAllComponents(JComponent. java:2803)
at javax.swing.JComponent.processKeyBindings(JComponent.java:2795)
at javax.swing.JComponent.processKeyEvent(JComponent.java:2689)
at java.awt.Component.processEvent(Component.java:5242)
at java.awt.Container.processEvent(Container.java:1961)
at java.awt.Component.dispatchEventImpl(Component.java:3933)
at java.awt.Container.dispatchEventImpl(Container.java:2019)
at java.awt.Component.dispatchEvent(Component.java:3781)
at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.ja va:1810)
at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboard FocusManager.java:668)
at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeybo ardFocusManager.java:916)
at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeybo ardFocusManager.java:794)
at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFoc usManager.java:632)
at java.awt.Component.dispatchEventImpl(Component.java:3819)
at java.awt.Container.dispatchEventImpl(Container.java:2019)
at java.awt.Window.dispatchEventImpl(Window.java:1764)
at java.awt.Component.dispatchEvent(Component.java:3781)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchTh read.java:234)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThre ad.java:163)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)
3. On Jedit, when I press Ctrl+Space, there is no such exception was thrown.