我正在尝试显示两个JFrame,每个监视器一个,代码似乎输出错误的东西。我的问题是与这些类似的边界线...
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除了我的JFrames基本上被覆盖并显示空白。下面的示例代码来自我正在测试的一个问题,看它是否是我想要的,但JFrames显示的并不像我想要的那样。它们是空白的,即使它们应该显示图标。代码是裸露的,因为我试图弄清楚为什么JFrame变得可以重新调整大小,并且不会像它们应该的那样退出。
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
public class Dual extends JFrame implements ActionListener, ChangeListener {
public Dual(String one) {
JFrame frame = new JFrame(one);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
frame.setResizable(false);
}
public static void showOnScreen(int screen, JFrame frame) {
GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
GraphicsDevice[] gs = ge.getScreenDevices();
if( screen > -1 && screen < gs.length ) {
gs[screen].setFullScreenWindow(frame);
} else if( gs.length > 0 ) {
gs[0].setFullScreenWindow(frame);
} else {
throw new RuntimeException( "No Screens Found" );
}
}
public static void main(String[] args) {
showOnScreen(1, new Dual("Test"));
showOnScreen(2, new Dual("1...2"));
GraphicsDevice[] devices = GraphicsEnvironment.getLocalGraphicsEnvironment().getScreenDevices();
for ( int i = 0; i < devices.length; i++ ) {
System.out.println( "Device " + i + " width: " + devices[ i ].getDisplayMode().getWidth() );
System.out.println( "Device " + i + " height: " + devices[ i ].getDisplayMode().getHeight() );
}
}
}
答案 0 :(得分:0)
尽我所知,你搞砸了你的参考资料。你不需要一个JFrame,你实际上需要一个Window。
查看http://www.exampledepot.com/egs/java.awt/screen_FullWin.html以获取示例。我用这个来修改你的代码来制作一个工作模型,结果看起来像是:
public class Dual extends Window implements ActionListener, ChangeListener {
private int screen;
public Dual(String one) {
super(new Frame());
setLayout(new FlowLayout());
JButton button = new JButton(one);
button.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
GraphicsDevice[] gs = ge.getScreenDevices();
if (screen > -1 && screen < gs.length) {
gs[screen].setFullScreenWindow(null);
}
dispose();
System.exit(0);
}
});
add(button);
}
public void setScreen(int screen) {
this.screen = screen;
}
public static void showOnScreen(int screen, Dual frame) {
GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
GraphicsDevice[] gs = ge.getScreenDevices();
if (screen > -1 && screen < gs.length) {
frame.setScreen(screen);
gs[screen].setFullScreenWindow(frame);
frame.validate();
} else if (gs.length > 0) {
gs[0].setFullScreenWindow(frame);
} else {
throw new RuntimeException("No Screens Found");
}
}
public static void main(String[] args) {
showOnScreen(1, new Dual("Test"));
showOnScreen(2, new Dual("1...2"));
// GraphicsDevice[] devices = GraphicsEnvironment.getLocalGraphicsEnvironment().getScreenDevices();
// for ( int i = 0; i < devices.length; i++ ) {
// System.out.println( "Device " + i + " width: " + devices[ i ].getDisplayMode().getWidth() );
// System.out.println( "Device " + i + " height: " + devices[ i ].getDisplayMode().getHeight() );
// }
}
@Override
public void actionPerformed(ActionEvent e) {
}
@Override
public void stateChanged(ChangeEvent e) {
}
}