要重现此问题：运行代码并看到您无法移动/调整大小/最大化内部框架。最小化和最小化帧，并观察您现在可以移动，调整大小和最大化内部帧。
我怎样才能让它在创作中变得可移动？谢谢！
另外，我正在使用netbeans最新版本来自动生成此代码。
/**
*
* @author admin
*/
public class SelectorFrame2 extends javax.swing.JFrame {
/**
* Creates new form SelectorFrame2
*/
public SelectorFrame2() {
initComponents();
}
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jDesktopPane1 = new javax.swing.JDesktopPane();
jInternalFrame4 = new javax.swing.JInternalFrame();
jInternalFrame5 = new javax.swing.JInternalFrame();
jMenuBar1 = new javax.swing.JMenuBar();
jMenu1 = new javax.swing.JMenu();
jMenu2 = new javax.swing.JMenu();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jInternalFrame4.setIconifiable(true);
jInternalFrame4.setMaximizable(true);
jInternalFrame4.setResizable(true);
jInternalFrame4.setDoubleBuffered(true);
jInternalFrame4.setVisible(true);
javax.swing.GroupLayout jInternalFrame4Layout = new javax.swing.GroupLayout(jInternalFrame4.getContentPane());
jInternalFrame4.getContentPane().setLayout(jInternalFrame4Layout);
jInternalFrame4Layout.setHorizontalGroup(
jInternalFrame4Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 275, Short.MAX_VALUE)
);
jInternalFrame4Layout.setVerticalGroup(
jInternalFrame4Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 179, Short.MAX_VALUE)
);
jInternalFrame5.setIconifiable(true);
jInternalFrame5.setMaximizable(true);
jInternalFrame5.setResizable(true);
jInternalFrame5.setDoubleBuffered(true);
jInternalFrame5.setVisible(true);
javax.swing.GroupLayout jInternalFrame5Layout = new javax.swing.GroupLayout(jInternalFrame5.getContentPane());
jInternalFrame5.getContentPane().setLayout(jInternalFrame5Layout);
jInternalFrame5Layout.setHorizontalGroup(
jInternalFrame5Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 275, Short.MAX_VALUE)
);
jInternalFrame5Layout.setVerticalGroup(
jInternalFrame5Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 171, Short.MAX_VALUE)
);
javax.swing.GroupLayout jDesktopPane1Layout = new javax.swing.GroupLayout(jDesktopPane1);
jDesktopPane1.setLayout(jDesktopPane1Layout);
jDesktopPane1Layout.setHorizontalGroup(
jDesktopPane1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jDesktopPane1Layout.createSequentialGroup()
.addContainerGap(209, Short.MAX_VALUE)
.addComponent(jInternalFrame5, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 128, Short.MAX_VALUE)
.addComponent(jInternalFrame4, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(117, Short.MAX_VALUE))
);
jDesktopPane1Layout.setVerticalGroup(
jDesktopPane1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jDesktopPane1Layout.createSequentialGroup()
.addContainerGap(233, Short.MAX_VALUE)
.addComponent(jInternalFrame4, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(174, Short.MAX_VALUE))
.addGroup(jDesktopPane1Layout.createSequentialGroup()
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jInternalFrame5, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
);
jDesktopPane1.setLayer(jInternalFrame4, javax.swing.JLayeredPane.DEFAULT_LAYER);
jDesktopPane1.setLayer(jInternalFrame5, javax.swing.JLayeredPane.DEFAULT_LAYER);
jMenu1.setText("File");
jMenuBar1.add(jMenu1);
jMenu2.setText("Edit");
jMenuBar1.add(jMenu2);
setJMenuBar(jMenuBar1);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jDesktopPane1)
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jDesktopPane1)
);
pack();
}// </editor-fold>
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(SelectorFrame2.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(SelectorFrame2.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(SelectorFrame2.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(SelectorFrame2.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new SelectorFrame2().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JDesktopPane jDesktopPane1;
private javax.swing.JInternalFrame jInternalFrame4;
private javax.swing.JInternalFrame jInternalFrame5;
private javax.swing.JMenu jMenu1;
private javax.swing.JMenu jMenu2;
private javax.swing.JMenuBar jMenuBar1;
// End of variables declaration
}
通过使用GroupLayout作为JDesktopPane，您可以让组布局管理器定义JInternalPanes的位置和大小。您不必使用JDesktopPane的组布局，而是必须按代码定义初始大小和位置。
我建议您通读Java Swing Tutorial, the chapter "How to Use Internal Frames"