Shell Events : Shell Event « SWT « Java Tutorial

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Java Tutorial » SWT » Shell Event 




Shells can generate a unique type of event: shell events (ShellEvent). A shell event is generated when a shell is minimized, maximized, activated, deactivated, or closed.

To add a shell listener to a shell, use this method:

public void addShellListener(ShellListener listener)

To remove a shell listener from a shell, use this method:

public void removeShellListener(ShellListener listener)
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ShellEvent;
import org.eclipse.swt.events.ShellListener;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

public class ShellEvents {
  public static void main(String[] args) {
    final Display display = new Display();
    final Shell shell = new Shell(display, SWT.SHELL_TRIM);
    shell.setLayout(new FillLayout());

    shell.addShellListener(new ShellListener() {

      public void shellActivated(ShellEvent event) {
        System.out.println("activate");
      }

      public void shellClosed(ShellEvent arg0) {
        System.out.println("close");
      }

      public void shellDeactivated(ShellEvent arg0) {
      }

      public void shellDeiconified(ShellEvent arg0) {
      }

      public void shellIconified(ShellEvent arg0) {
      }
    });

    shell.open();
    // Set up the event loop.
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch()) {
        // If no more entries in event queue
        display.sleep();
      }
    }
    display.dispose();
  }

}














17.5.Shell Event
17.5.1.Shell Events
17.5.2.Change the default behavior of shellsChange the default behavior of shells
17.5.3.Add Close event for Shell window
17.5.4.Add Resize listener to ShellAdd Resize listener to Shell
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