guiscreens.java

java swing 开发代码

// GuiScreens.java
// A quick utility to print out graphic device information.  Will work on
// systems with multiple monitors.
//
package	jswing.ch03;

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

public class GuiScreens {
  public static void main(String[] args) {
    Rectangle virtualBounds = new Rectangle();
    GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
    GraphicsDevice[] gs = ge.getScreenDevices();
    JFrame frame[][] = new JFrame[gs.length][];
    for (int j = 0; j < gs.length; j++) { 
      GraphicsDevice gd = gs[j];
      System.out.println("Device " + j + ": " + gd);
      GraphicsConfiguration[] gc = gd.getConfigurations();
      frame[j] = new JFrame[gc.length];

      for (int i=0; i < gc.length; i++) {
        System.out.println("  Configuration " + i + ": " + gc[i]);
        System.out.println("    Bounds: " + gc[i].getBounds());
        virtualBounds = virtualBounds.union(gc[i].getBounds());
        frame[j][i] = new JFrame("Config: " + i, gc[i]);
        frame[j][i].setBounds(50, 50, 400, 100);
        frame[j][i].setLocation(
          (int)gc[i].getBounds().getX() + 50,
          (int)gc[i].getBounds().getY() + 50);
        frame[j][i].getContentPane().add(new JTextArea("Config:\n" + gc[i]));
        frame[j][i].setVisible(true);
      }
      System.out.println("Overall bounds: " + virtualBounds);
    }
  }
}