如何讓用戶在外部點擊時模態JDialog閃爍

Question

閃爍的代碼並不重要，而不是如何捕捉點擊對話框外部（如果有的話）時觸發的事件。

在Windows上，如果您嘗試在對話框外單擊，則聽起來是'ding'聲音，我只是想知道是否有可能跳過該事件的流行。這可能嗎？

謝謝。

SSCCE：

import com.sun.awt.AWTUtilities; 
import java.awt.*; 
import java.awt.event.*; 
import javax.swing.*; 

public class ModalDialogSSCCE { 
    private JFrame frame = new JFrame("Modal Dialog SSCCE - click to display dialog"); 
    private JPanel dialogContent = new JPanel(); 
    private ModalDialog dialog; 

    public static void main(String[] args) { 
     new ModalDialogSSCCE(); 
    } 

    public ModalDialogSSCCE() { 
     Action closeAction = new AbstractAction() { 
     public void actionPerformed(ActionEvent e) { 
      dialog.setVisible(false); 
     } 
     }; 

     frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
     frame.setPreferredSize(new Dimension(500, 500)); 

     JButton closeButton = new JButton("Close"); 
     closeButton.addActionListener(closeAction); 

     dialogContent.setSize(200, 200); 
     dialogContent.setBackground(Color.DARK_GRAY); 
     dialogContent.add(closeButton, BorderLayout.CENTER); 
     dialog = new ModalDialog(dialogContent, closeAction); 

     frame.getContentPane().addMouseListener(new MouseAdapter(){ 
     public void mouseClicked(MouseEvent e){ 
      dialog.setVisible(true); 
     } 
     }); 

     frame.pack(); 
     frame.setVisible(true); 
     frame.setLocationRelativeTo(null); 
    } 

    public class ModalDialog extends JDialog { 

     private JComponent content; 
     private final int shadowSize = 5; 

     public ModalDialog(JComponent content, Action closeAction) {  
     this.setLayout(null); 
     this.content = content; 
     this.setUndecorated(true); 
     AWTUtilities.setWindowOpaque(this, false); 
     this.setModalityType(Dialog.ModalityType.APPLICATION_MODAL); 
     this.getContentPane().add(content); 

     content.setBounds(shadowSize, shadowSize, content.getWidth(), content.getHeight()); 
     content.getInputMap(JComponent.WHEN_FOCUSED) 
       .put(KeyStroke.getKeyStroke(KeyEvent.VK_ESCAPE, 0), "close"); 
     content.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW) 
       .put(KeyStroke.getKeyStroke(KeyEvent.VK_ESCAPE, 0), "close"); 
     content.getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT) 
       .put(KeyStroke.getKeyStroke(KeyEvent.VK_ESCAPE, 0), "close"); 
     content.getActionMap().put("close", closeAction); 
     } 

     @Override 
     public void paint(Graphics graphics) { 
     super.paint(graphics); 
     Graphics2D g = (Graphics2D) graphics.create(); 
     g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); 
     g.setColor(new Color(50, 50, 50, 50)); 
     g.setStroke(new BasicStroke(shadowSize)); 
     g.drawRoundRect(shadowSize/2 + 1, shadowSize/2 + 1, getWidth() - shadowSize - 2, getHeight() - shadowSize - 2, 1, 1); 
     content.repaint(); 
     } 

     public void toggle() { 
     if (isVisible()) this.setVisible(false); 
     else this.setVisible(true); 
     } 

     @Override 
     public void setVisible(boolean visible) { 
     if (visible) { 
      this.setBounds(frame.getX() + (frame.getWidth() - content.getWidth())/2, 
      frame.getY() + (frame.getHeight() - content.getHeight())/2, 
          content.getWidth() + 2 * shadowSize, 
          content.getHeight() + 2 * shadowSize); 
     } 
     super.setVisible(visible); 
     } 

     public JComponent getContent() { 
     return content; 
     } 
    } 
} 

Answer 1

使對話模式，並給它一個父。例如。使用JDialog(Frame,String,boolean)構造函數。

JDialog blockingDialog = new JDialog(mainFrame, "Blocking Dialog", true);