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| 14. 81. 6. 确定何时框架或窗口Iconized或最大化 |
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import java.awt.Frame;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.event.WindowStateListener;
public class Main {
public static void main() {
Frame frame = new Frame();
WindowStateListener listener = new WindowAdapter() {
public void windowStateChanged(WindowEvent evt) {
int oldState = evt.getOldState();
int newState = evt.getNewState();
if ((oldState & Frame.ICONIFIED) == 0 && (newState & Frame.ICONIFIED) != 0) {
System.out.println("Frame was iconized");
} else if ((oldState & Frame.ICONIFIED) != 0 && (newState & Frame.ICONIFIED) == 0) {
System.out.println("Frame was deiconized");
}
if ((oldState & Frame.MAXIMIZED_BOTH) == 0 && (newState & Frame.MAXIMIZED_BOTH) != 0) {
System.out.println("Frame was maximized");
} else if ((oldState & Frame.MAXIMIZED_BOTH) != 0 && (newState & Frame.MAXIMIZED_BOTH) == 0) {
System.out.println("Frame was minimized");
}
}
};
frame.addWindowStateListener(listener);
frame.setVisible(true);
}
}
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