demojframe.java

来自「精通NetBeans光盘源代码,很好很好的资料」· Java 代码 · 共 192 行

/*
 * DemoJFrame.java
 *
 * Created on 2006年3月27日, 下午8:56
 */

package org.netbeans.swing.component;

/**
 *
 * @author  boyingking
 */
public class DemoJFrame extends javax.swing.JFrame {
    
    /** Creates new form DemoJFrame */
    public DemoJFrame() {
        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.
     */
    // <editor-fold defaultstate="collapsed" desc=" Generated Code ">//GEN-BEGIN:initComponents
    private void initComponents() {
        jLabelMessage = new javax.swing.JLabel();
        jScrollPane1 = new javax.swing.JScrollPane();
        jListSize = new javax.swing.JList();
        jCheckBoxSize = new javax.swing.JCheckBox();
        jCheckBoxOnTop = new javax.swing.JCheckBox();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setTitle("JFrame\u5e94\u7528\u793a\u4f8b");
        setAlwaysOnTop(true);
        jLabelMessage.setFont(new java.awt.Font("宋体", 0, 18));
        jLabelMessage.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
        jLabelMessage.setText("\u8fd9\u91cc\u5c06\u663e\u793aJFrame\u7684\u5c5e\u6027");

        jListSize.setModel(new javax.swing.AbstractListModel() {
            String[] strings = { "300x200   ", "400x300   ", "600x450   ", "800x600   " };
            public int getSize() { return strings.length; }
            public Object getElementAt(int i) { return strings[i]; }
        });
        jListSize.addListSelectionListener(new javax.swing.event.ListSelectionListener() {
            public void valueChanged(javax.swing.event.ListSelectionEvent evt) {
                jListSizeValueChanged(evt);
            }
        });

        jScrollPane1.setViewportView(jListSize);

        jCheckBoxSize.setSelected(true);
        jCheckBoxSize.setText("\u53ef\u4ee5\u66f4\u6539\u5927\u5c0f");
        jCheckBoxSize.setBorder(javax.swing.BorderFactory.createEmptyBorder(0, 0, 0, 0));
        jCheckBoxSize.setMargin(new java.awt.Insets(0, 0, 0, 0));
        jCheckBoxSize.addItemListener(new java.awt.event.ItemListener() {
            public void itemStateChanged(java.awt.event.ItemEvent evt) {
                jCheckBoxSizeItemStateChanged(evt);
            }
        });

        jCheckBoxOnTop.setSelected(true);
        jCheckBoxOnTop.setText("\u603b\u5728\u6700\u524d\u9762");
        jCheckBoxOnTop.setBorder(javax.swing.BorderFactory.createEmptyBorder(0, 0, 0, 0));
        jCheckBoxOnTop.setMargin(new java.awt.Insets(0, 0, 0, 0));
        jCheckBoxOnTop.addItemListener(new java.awt.event.ItemListener() {
            public void itemStateChanged(java.awt.event.ItemEvent evt) {
                jCheckBoxOnTopItemStateChanged(evt);
            }
        });

        org.jdesktop.layout.GroupLayout layout = new org.jdesktop.layout.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(layout.createSequentialGroup()
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
                    .add(layout.createSequentialGroup()
                        .add(62, 62, 62)
                        .add(jScrollPane1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                        .add(55, 55, 55)
                        .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
                            .add(jCheckBoxOnTop)
                            .add(jCheckBoxSize)))
                    .add(layout.createSequentialGroup()
                        .add(29, 29, 29)
                        .add(jLabelMessage, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 279, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)))
                .addContainerGap(43, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(layout.createSequentialGroup()
                .addContainerGap()
                .add(jLabelMessage, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 35, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                .add(14, 14, 14)
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
                    .add(layout.createSequentialGroup()
                        .add(jCheckBoxSize)
                        .add(66, 66, 66)
                        .add(jCheckBoxOnTop))
                    .add(jScrollPane1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 117, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
                .addContainerGap(43, Short.MAX_VALUE))
        );
        pack();
    }// </editor-fold>//GEN-END:initComponents

    private void jListSizeValueChanged(javax.swing.event.ListSelectionEvent evt) {//GEN-FIRST:event_jListSizeValueChanged
// TODO add your handling code here:
        int  frameSize=this.jListSize.getSelectedIndex();
        switch(frameSize)
        {
            case 0:
            {
                this.setSize(300,200);
                this.jLabelMessage.setText("当前窗口大小为300x200");
                break;
            }
            case 1:
            {
                this.setSize(400,300);
                this.jLabelMessage.setText("当前窗口大小为400x300"); 
                 break;
            }
            case 2:
            {
                this.setSize(650,400);
                this.jLabelMessage.setText("当前窗口大小为650x400");
                 break;
            }
            case 3:
            {
                this.setSize(800,600);
                this.jLabelMessage.setText("800x600"); 
                 break;
            }
        }
    }//GEN-LAST:event_jListSizeValueChanged

    private void jCheckBoxOnTopItemStateChanged(java.awt.event.ItemEvent evt) {//GEN-FIRST:event_jCheckBoxOnTopItemStateChanged
// TODO add your handling code here:
         if(this.jCheckBoxOnTop.isSelected())
         {
             this.setAlwaysOnTop(true);
             this.jLabelMessage.setText("当前窗口总位于最前面");
         }
         else
        {
              this.setAlwaysOnTop(false);
              this.jLabelMessage.setText("当前窗口不是总位于最前面");
        }

    }//GEN-LAST:event_jCheckBoxOnTopItemStateChanged

    private void jCheckBoxSizeItemStateChanged(java.awt.event.ItemEvent evt) {//GEN-FIRST:event_jCheckBoxSizeItemStateChanged
// TODO add your handling code here:
         if(this.jCheckBoxSize.isSelected())
         {
             this.setResizable(true);
             this.jListSize.setEnabled(true);
             this.jLabelMessage.setText("当前窗口可以改变大小");
        }
         else
         {
            this.setResizable(false); 
            this.jListSize.setEnabled(false);
            this.jLabelMessage.setText("当前窗口不可以改变大小");
        }

    }//GEN-LAST:event_jCheckBoxSizeItemStateChanged
    
    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new DemoJFrame().setVisible(true);
            }
        });
    }
    
    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JCheckBox jCheckBoxOnTop;
    private javax.swing.JCheckBox jCheckBoxSize;
    private javax.swing.JLabel jLabelMessage;
    private javax.swing.JList jListSize;
    private javax.swing.JScrollPane jScrollPane1;
    // End of variables declaration//GEN-END:variables
    
}