jframe

问题 I have a JFrame (undecorated) with a Glasspane. This Frame opens a JDialog (also undecorated and has also a glassPane) and hides itself (setVisible(false)). The Glasspanes are set with .setGlassPane(). The Dialog is opened with the Frame as owner. The GlassPane extends a JPanel and implements AWTEventListener. I use it for resizing the Frames and Dialogs, so it knows it's parent (the Frame/Dialog) - this is called "target". The Events inside the GlassPane are handled like this: public void

问题 I have a simple Atari breakout program, and long story short, one of my powerups is to allow the user to resize the window for a few seconds, then make the window non-resizable again.Everything works fine, and the window goes from being not-resizable, to being resizable for a few seconds. What's supposed to happen, is after the few seconds are up, the window should stop accepting input for resizing the window (IE: should not be resizable). The only problem, is that whenever it's supposed to

问题 I want to paint the contents of a JFrame onto another frame. Currently, I only get it to work if the JFrame is visible. Is there a way to paint a hidden JFrame? Additional info: In my project I need to be able to rotate and scale windows. I do not want to write my own window-api, so I thought I might be able to just paint JFrames or similar container classes in a rotated way (which the Graphics2D-API supports perfectly well). It would be awesome to be able to use standard JFrames for that,

问题 JFrameWithPanel is not abstract and does not override abstract method actionPerformed(java.awt.event.ActionEvent) in java.awt.event.ActionListener public class JFrameWithPanel extends JFrame implements ActionListener I Don't get this code. Book and Java site tells me this is the syntax for the method, but again this error shows up constantly. import javax.swing.*; import javax.swing.JOptionPane; import java.awt.*; import java.awt.event.*; import java.lang.Math.*; import java.lang.Integer.*;

问题 Hi I am writing a simple program to display a frame. However the frame turns out real small when I type setLayout(null); But if i ignore this command, the button is always at the top center Can some one point out my error? import java.io.*; import javax.swing.*; import java.awt.event.*; import java.awt.*; class theframe { private static void create() { JFrame frame = new JFrame("FrameDemo"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); Insets insets = frame.getInsets(); frame.setSize

问题 actually i have called the swing worker from a frame (Suppose) A.. in the swing worker class in do-in-Background method i have certain db queries and i am calling frame B too.. in the done() method however i want to dispose the frame A.. how can i do that..? i cannot write dispose() in frame A class because that results in disposing of frame before the new frame(frame B) is visible... Please help!! class frameA extends JFrame{ public frameA(){ //done some operations.. SwingWorker worker=new

问题 I try to show some text in my JTextArea in runtime. But when I use a loop of setText to show text in order, it only show the text of the last loop Here is my code: private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) { for (int i=0;i<10;i++) jTextArea1.setText("Example "+i); } I want it to show "Example 1", "Example 2",..,"Example 9" . But it only show one time " Example 9 " Anyone can explain it for me?? 回答1: setText does just that, it "sets the text" of field to the value

问题 I have an application which contains a GUI, it is using Javamail. When i open this Jframe I have to see messages that are sent to my mail on a jTextArea . The problem is when i wrote my code it only shows just the last message sent. How do I display all new messages in my inbox? This is my code : private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) { Properties props = new Properties(); props.put("mail.pop3.host", "pop.gmail.com"); props.put("mail.pop3.user", "mymail@gmail.com

问题 This question already has answers here : Closed 6 years ago . Possible Duplicate: How to make a JFrame Modal in Swing java I have 2 JFrames one is the main JFrame and the other one is a sub JFrame, and I'm trying to make the main JFrame inaccessible to user interactions when I display the sub JFrame. 回答1: How to make a modal JFrame? Don't. Use a modal JDialog -- that's precisely what they're for. You understand of course that a JDialog can hold a complex GUI, as complex as any held by a

问题 This question already has answers here : Closed 6 years ago . Possible Duplicate: How to make a JFrame Modal in Swing java I have 2 JFrames one is the main JFrame and the other one is a sub JFrame, and I'm trying to make the main JFrame inaccessible to user interactions when I display the sub JFrame. 回答1: How to make a modal JFrame? Don't. Use a modal JDialog -- that's precisely what they're for. You understand of course that a JDialog can hold a complex GUI, as complex as any held by a