我在使用Netbeans设计GUI(是的,我很懒)并手动尝试将三角形绘制到JFrame时遇到了一些问题。Swing组件在未获得焦点时会被“覆盖”。下面附上图片和代码。
GUI的所有自动生成代码均位于initComponents()部分中。而绘图生成位于JFrame Paint方法的覆盖代码中。看起来发生的情况是initComponents代码在绘制之前运行,因为该对象在setVisibile(true)之前创建。一旦调用setVisible(true),paint方法将覆盖initComponents创建的所有生成对象。寻求解决方案,以防止任何内容被覆盖。感谢您提供的任何帮助。
GUI的所有自动生成代码均位于initComponents()部分中。而绘图生成位于JFrame Paint方法的覆盖代码中。看起来发生的情况是initComponents代码在绘制之前运行,因为该对象在setVisibile(true)之前创建。一旦调用setVisible(true),paint方法将覆盖initComponents创建的所有生成对象。寻求解决方案,以防止任何内容被覆盖。感谢您提供的任何帮助。
$/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
/*
* SimpleClient.java
*
* Created on Sep 22, 2011, 11:38:30 AM
*/
package Assignment3;
import java.awt.Graphics;
/**
*
* @author Mark
*/
public class SimpleClient extends javax.swing.JFrame {
/** Creates new form SimpleClient */
public SimpleClient() {
initComponents();
}
public void paint(Graphics g) {
int[] xPoints = {100, 100, 200};
int[] yPoints = {100, 200, 200};
g.drawPolygon(xPoints, yPoints, 3);
}
/** 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() {
jTextField1 = new javax.swing.JTextField();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jTextField1.setText("jTextField1");
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(103, 103, 103)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(238, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addContainerGap(220, Short.MAX_VALUE)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(60, 60, 60))
);
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(SimpleClient.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(SimpleClient.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(SimpleClient.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(SimpleClient.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 SimpleClient().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JTextField jTextField1;
// End of variables declaration
}