Eclipse插件开发：SWT之ComboExample

该例子演示了SWT界面下的下拉框Combo构建及监听。

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Combo;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
public class ComboExample {

public static void main(String[] args) {

Display display = new Display();

Shell shell = new Shell(display);

shell.setText("Combo Example");

shell.setBounds(100, 100, 200, 100);

shell.setLayout(new FillLayout(SWT.VERTICAL));

final Combo combo1 = new Combo(shell, SWT.READ_ONLY);

final Combo combo2 = new Combo(shell, SWT.DROP_DOWN);

final Label label = new Label(shell, SWT.CENTER);

combo1.setItems(new String[] { "First", "Second", "Third" });

combo1.setText("First");

combo1.addSelectionListener(new SelectionAdapter() {

public void widgetSelected(SelectionEvent event) {

label.setText("Selected: " + combo1.getText());

}

});

combo2.setItems(new String[] { "First", "Second", "Third" });

combo2.setText("First");

combo2.addModifyListener(new ModifyListener() {

public void modifyText(ModifyEvent event) {

label.setText("Entered: " + combo2.getText());

}

});

shell.open();

while (!shell.isDisposed()) {

if (!display.readAndDispatch())

display.sleep();

}

display.dispose();

}

}