我试图弄清楚这个问题已经很久了,开始怀疑这是否可能!
我的应用程序有一个启动窗口 - 我需要它,这样当我点击我创建的按钮时,窗口要么关闭并打开一个新窗口,要么窗口调整大小并只留下画布(准备放置新的小部件、精灵ETC... )。
我知道我需要一个处理程序事件,但我无法让代码工作。
我不太确定你的问题是什么,但我用 JFrame 和 3 个按钮编写了一个示例。
import java.awt.BorderLayout;
import java.awt.EventQueue;
import java.awt.Rectangle;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
public class OpenWindowAndResizeWindow
{
private JFrame frame;
private JButton btnOpenNewWindow;
private JButton btnResizeWindow;
private JButton btnRemoveAllButtons;
/**
* Launch the application.
*/
public static void main(String[] args)
{
EventQueue.invokeLater(new Runnable()
{
public void run()
{
try
{
OpenWindowAndResizeWindow window = new OpenWindowAndResizeWindow();
window.frame.setVisible(true);
}
catch (Exception e)
{
e.printStackTrace();
}
}
});
}
/**
* Create the application.
*/
public OpenWindowAndResizeWindow()
{
initialize();
}
/**
* Initialize the contents of the frame.
*/
private void initialize()
{
frame = new JFrame();
frame.setBounds(100, 100, 300, 300);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(getBtnOpenNewWindow(), BorderLayout.NORTH);
frame.getContentPane().add(getBtnResizeWindow(), BorderLayout.SOUTH);
frame.getContentPane().add(getBtnRemoveAllButtons(), BorderLayout.CENTER);
frame.setVisible(true);
}
private void openNewWindow()
{
OpenWindowAndResizeWindow newWindow = new OpenWindowAndResizeWindow();
frame.dispose();
}
private void removeButtons()
{
getBtnOpenNewWindow().setVisible(false);
getBtnRemoveAllButtons().setVisible(false);
getBtnResizeWindow().setVisible(false);
}
private void resizeWindow()
{
Rectangle rectangle = frame.getBounds();
rectangle.width = (int)rectangle.getWidth() + 100;
rectangle.height = (int)rectangle.getHeight() + 100;
frame.setBounds(rectangle);
}
private JButton getBtnOpenNewWindow() {
if (btnOpenNewWindow == null) {
btnOpenNewWindow = new JButton("Open new Window");
btnOpenNewWindow.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
openNewWindow();
}
});
}
return btnOpenNewWindow;
}
private JButton getBtnResizeWindow() {
if (btnResizeWindow == null) {
btnResizeWindow = new JButton("Resize Window");
btnResizeWindow.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
resizeWindow();
}
});
}
return btnResizeWindow;
}
private JButton getBtnRemoveAllButtons() {
if (btnRemoveAllButtons == null) {
btnRemoveAllButtons = new JButton("Remove All Buttons");
btnRemoveAllButtons.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
removeButtons();
}
});
}
return btnRemoveAllButtons;
}
}
此代码已准备好使用 javac 进行编译,或者只是将其粘贴到您的 IDE 中。
也许这有点帮助。Java SE API 文档也很有用。