Java开发网 - 请教：在frame中显示一幅图片和一个按钮怎么做？

Topic: 请教：在frame中显示一幅图片和一个按钮怎么做？

1.请教：在frame中显示一幅图片和一个按钮怎么做？	Copy to clipboard
Posted by: topo Posted on: 2003-03-14 16:22 我想在frame中显示一幅图片和一个按钮该使用什么控件显示图片？

2.Re:请教：在frame中显示一幅图片和一个按钮怎么做？ [Re: topo]	Copy to clipboard
Posted by: cn Posted on: 2003-03-14 17:56 你甚至可以把图片放到按钮上

3.Re:请教：在frame中显示一幅图片和一个按钮怎么做？ [Re: cn]	Copy to clipboard
Posted by: topo Posted on: 2003-03-14 23:11 我不打算放到按钮上，怎么办？按钮上好像不能显示这麽大的一张jpg图

4.Re:请教：在frame中显示一幅图片和一个按钮怎么做？ [Re: topo]	Copy to clipboard
Posted by: cn Posted on: 2003-03-15 01:28 Post is deleted

5.Re:请教：在frame中显示一幅图片和一个按钮怎么做？ [Re: cn]

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Posted by: topo
Posted on: 2003-03-15 10:46

我想在一个frame中显示数据库中的image图片，使用什么组件？我使用按钮，在jbuilder工程中导入，在按钮组件的icon属性里发现了图片文件，可是选不上去。是不是不支持jpg？－－－好像是不该把图片放到含有空格的目录中。这个问题解决了。我还是想知道你们做数据库应用时使用什么组件显示图片？

6.Re:请教：在frame中显示一幅图片和一个按钮怎么做？ [Re: topo]

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Posted by: software_young
Posted on: 2003-03-18 00:15

这里是一个例子，是从我的一个项目中摘出来的：
首先是构造一个扩展JTextField 的类
package weathermechanism;

import java.awt.*;
import javax.swing.*;
import javax.swing.text.*;

public class clsDisplayImage
extends JTextField {
Image myimage;

public clsDisplayImage() {
}

public clsDisplayImage(String PictureFileName) {
super(PictureFileName);
Toolkit toolkit = Toolkit.getDefaultToolkit();
myimage = toolkit.getImage(PictureFileName);
}

public clsDisplayImage(int columns) {
super(columns);
}

public clsDisplayImage(String text, int columns) {
super(text, columns);
}

public clsDisplayImage(Document doc, String text, int columns) {
super(doc, text, columns);
}

public void paintComponent(Graphics g) {
g.drawImage(myimage, 0, 0, this);
}
}

其次是在你的用户界面类中使用这个类

package weathermechanism;

import java.io.*;
import java.sql.*;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;

import com.borland.jbcl.layout.*;

public class frmWindchill
extends JDialog {
JPanel panel1 = new JPanel();
XYLayout xYLayout1 = new XYLayout();
JTextArea txtDefinition = new JTextArea();
JTextArea txtDetail = new JTextArea();
JButton btnReturn = new JButton();
clsDisplayImage displayImage;
JLabel lblCopyright = new JLabel();
String PictureFileName = "Windchill.jpg";

private Connection connection;
private Statement statement;
TitledBorder titledBorder1;
TitledBorder titledBorder2;
TitledBorder titledBorder3;
TitledBorder titledBorder4;

public frmWindchill(Frame frame, String title, boolean modal) {
super(frame, title, modal);
try {
jbInit();
pack();
}
catch (Exception ex) {
ex.printStackTrace();
}
}

public frmWindchill() {
this(null, "", false);
}

private void getData() {
Statement statement;
clsDatabaseConnection cdc = new clsDatabaseConnection();

cdc.buildConnection();

connection = cdc.getConnection();

InputStream inputStream;
OutputStream outputStream;
byte[] buffer;

try {
statement = connection.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,
ResultSet.CONCUR_UPDATABLE);
ResultSet resultSet = statement.executeQuery(
"select Picture, Description1, Description2 from CSCI3130Project.dbo.Weather where DataID=4");

resultSet.first();

try {
inputStream = resultSet.getBinaryStream("Picture");

buffer = new byte[inputStream.available()];

inputStream.read(buffer);

outputStream = new FileOutputStream(PictureFileName);
outputStream.write(buffer);

inputStream.close();
outputStream.close();
}
catch (IOException ioe) {
ioe.printStackTrace();
return;
}
catch (SQLException se) {
se.printStackTrace();
return;
}

txtDefinition.setText(resultSet.getString("Description1"));
txtDetail.setText(resultSet.getString("Description2"));

statement.close();
}
catch (ClassCastException e) {
e.printStackTrace();
return;
}
catch (SQLException se) {
se.printStackTrace();
return;
}

cdc.closeConnection();

return;
}

private void jbInit() throws Exception {
titledBorder1 = new TitledBorder("");
titledBorder2 = new TitledBorder("");
titledBorder3 = new TitledBorder("");
titledBorder4 = new TitledBorder("");
panel1.setLayout(xYLayout1);
this.setDefaultCloseOperation(WindowConstants.DO_NOTHING_ON_CLOSE);
this.setModal(true);
this.setResizable(false);
this.setTitle("Windchill");
txtDefinition.setForeground(Color.black);
txtDefinition.setBorder(titledBorder2);
txtDefinition.setMaximumSize(new Dimension(2147483647, 2147483647));
txtDefinition.setPreferredSize(new Dimension(106, 18));
txtDefinition.setEditable(false);
txtDefinition.setText("");
txtDefinition.setLineWrap(true);
txtDefinition.setRows(0);
txtDefinition.setWrapStyleWord(true);
btnReturn.setText("Return");
btnReturn.addActionListener(new frmWindchill_btnReturn_actionAdapter(this));
lblCopyright.setText(
"Copyright \u00A9 2003 XtremeSoft. All rights reserved.");
txtDetail.setBorder(titledBorder3);
txtDetail.setEditable(false);
txtDetail.setLineWrap(true);
txtDetail.setWrapStyleWord(true);
getContentPane().add(panel1, BorderLayout.CENTER);
getData();
displayImage = new clsDisplayImage(PictureFileName);
panel1.add(displayImage, new XYConstraints(175, 5, 430, 558));
panel1.add(btnReturn, new XYConstraints(272, 581, -1, 27));
panel1.add(lblCopyright, new XYConstraints(181, 613, 249, -1));
panel1.add(txtDefinition, new XYConstraints(5, 44, 164, 225));
panel1.add(txtDetail, new XYConstraints(5, 303, 163, 222));
}

void btnReturn_actionPerformed(ActionEvent e) {
File f = new File(PictureFileName);
f.delete();
this.dispose();
}
}

class frmWindchill_btnReturn_actionAdapter
implements java.awt.event.ActionListener {
frmWindchill adaptee;

frmWindchill_btnReturn_actionAdapter(frmWindchill adaptee) {
this.adaptee = adaptee;
}

public void actionPerformed(ActionEvent e) {
adaptee.btnReturn_actionPerformed Envelope

;
}
}

7.Re:请教：在frame中显示一幅图片和一个按钮怎么做？ [Re: software_young]	Copy to clipboard
Posted by: topo Posted on: 2003-03-22 10:33 谢谢!感觉在java中处理带图片的数据库，不是很简单。不像是其他语言好