Slider: package swt_jface.demo8; import org.eclipse.swt.SWT; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Event; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Listener; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Slider; import org.eclipse.swt.widgets.Text; public class SampleSlider { Display display = new Display(); Shell shell = new Shell(display); Slider slider; Text value; public SampleSlider() { shell.setLayout(new GridLayout(1, true)); Label label = new Label(shell, SWT.NULL); label.setText("Volume:"); slider = new Slider(shell, SWT.VERTICAL); slider.setBounds(0, 0, 40, 200); slider.setMaximum(24); slider.setMinimum(0); slider.setIncrement(1); slider.setPageIncrement(5); slider.setThumb(4); slider.addListener(SWT.Selection, new Listener() { public void handleEvent(Event event) { int perspectiveValue = slider.getMaximum() - slider.getSelection() + slider.getMinimum() - slider.getThumb(); value.setText("Vol: " + perspectiveValue); } }); value = new Text(shell, SWT.BORDER | SWT.SINGLE); value.setEditable(false); slider.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_CENTER)); value.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_CENTER)); shell.pack(); shell.open(); while (!shell.isDisposed()) { if (!display.readAndDispatch()) { display.sleep(); } } display.dispose(); } public static void main(String[] args) { new SampleSlider(); } }package swt_jface.demo8; import org 你的当前访问异常,请进行认证后继续阅读剩余内容。 提交