布局问题:自动增长标签(SWT)

Question

我正在使用GridLayout尝试制作标签自动增长而不隐藏其内容的任何内容.这是一个简单的测试代码:每次按下按钮时标签文本都会变大,但只有在我水平调整窗口大小后才会得到正确的布局.有没有办法解决这个问题,而无需调整窗口大小？我想我已经尝试过每一处房产,但我仍然无法使其工作,这让我疯狂!

这就是我得到的

这应该是这样的

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.List;
import org.eclipse.swt.widgets.Shell;

public class UItest {

    protected Shell shell;
    private Label   label;

    public static void main(String[] args) {
        try {
            UItest window = new UItest();
            window.open();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public void open() {
        Display display = Display.getDefault();
        createContents();
        shell.open();
        shell.layout();
        while (!shell.isDisposed()) {
            if (!display.readAndDispatch()) {
                display.sleep();
            }
        }
        display.dispose();
    }

    protected void createContents() {
        shell = new Shell();
        shell.setSize(450, 300);
        shell.setText("SWT Application");
        shell.setLayout(new GridLayout(1, false));

        Button button = new Button(shell, SWT.NONE);
        button.addSelectionListener(new SelectionAdapter() {
            public void widgetSelected(SelectionEvent arg0) {
                label.setText(label.getText() + " " + label.getText());
            }
        });
        button.setText("New Button");

        label = new Label(shell, SWT.WRAP);
        label.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false, 1, 1));
        label.setText("New Label");

        List list = new List(shell, SWT.BORDER);
        list.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 1, 1));

    }

    protected Label getLabel() {
        return label;
    }
}

谢谢你的时间.

---

解决了这些变化:

Button button = new Button(shell, SWT.NONE);
button.addSelectionListener(new SelectionAdapter() {
    public void widgetSelected(SelectionEvent arg0) {
        label.setText(label.getText() + " " + label.getText());
        shell.layout(); // ADDED THIS
    }
});
button.setText("New Button");

label = new Label(shell, SWT.WRAP);
// SET HORIZONTAL GRAB ON LABEL (FIRST TRUE IN GridData CONSTRUCTOR)
label.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false, 1, 1));
label.setText("New Label");

Answer 1

我认为,问题是当文本改变时布局不会失效 - 尝试强制进行中继(通过调用getShell().layout(true, true)).