清除文本后在SWT中设置光标位置

import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;

public class SetCursorPositionExample {
    public static void main(String[] args) {
        Display display = new Display();
        Shell shell = new Shell(display);
        shell.setLayout(new FillLayout());

        Text text = new Text(shell, SWT.BORDER | SWT.MULTI | SWT.WRAP);
        text.setText("这是一段示例文本");
        
        // 清除文本
        text.setText("");
        
        // 设置光标位置
        text.setSelection(0);

        shell.open();
        while (!shell.isDisposed()) {
            if (!display.readAndDispatch()) {
                display.sleep();
            }
        }
        display.dispose();
    }
}