java - Java SWT中的“可调整大小”对话框

Question

我有一个Composite(容器)在另一个Composite(对话框区域)内。该容器包含一些UI元素。如何增大对话框的大小或使其可调整大小。这是我的代码

 protected Control createDialogArea(Composite parent) {
    setMessage("Enter user information and press OK");
    setTitle("User Information");
    Composite area = (Composite) super.createDialogArea(parent);
    Composite container = new Composite(area, SWT.NONE);
    container.setLayout(new GridLayout(2, false));
    container.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 1, 1));

    Label lblUserName = new Label(container, SWT.NONE);
    lblUserName.setText("User name");

    txtUsername = new Text(container, SWT.BORDER);
    txtUsername.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1));
    txtUsername.setEditable(newUser);
    txtUsername.setText(name);

    return area;
}

Answer 1

要使JFace对话框可调整大小，请添加isResizable方法的替代:

@Override
protected boolean isResizable() {
    return true;
}

要使对话框打开时更大，可以在布局上设置宽度或高度提示。例如:

GridData data = new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1);
data.widthHint = convertWidthInCharsToPixels(75);
txtUsername.setLayoutData(data);

或者您可以覆盖 getInitialSize()，例如，此代码为水平(75个字符)和垂直(20行)的更多字符留出空间:

@Override
protected Point getInitialSize() {
    final Point size = super.getInitialSize();

    size.x = convertWidthInCharsToPixels(75);

    size.y += convertHeightInCharsToPixels(20);

    return size;
}