我用((BasicInternalFrameUI)getUI()).setNorthPane(null)这个方法将标题栏去掉后，如何在不恢复标题栏的情况下，实现最小化操作？
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- Java code
public void setIcon(boolean b) throws PropertyVetoExceptionIconifies or de-iconifies this internal frame, if the look and feel supports iconification. If the internal frame's state changes to iconified, this method fires an INTERNAL_FRAME_ICONIFIED event. If the state changes to de-iconified, an INTERNAL_FRAME_DEICONIFIED event is fired.