JavaSWT中的Resizeble对话框

Question

我有一个复合（容器），它位于另一个复合（对话框区域）内。容器包含一些UI元素。如何使对话框的大小变大或可调整大小。这是我的密码

 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，请为isResizable方法添加覆盖：

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

要使对话框在打开时变大，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);

或者您可以重写getInitialSize()，例如，此代码在水平方向（75个字符）和垂直方向（20行）上为更多字符留出空间：

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

    size.x = convertWidthInCharsToPixels(75);

    size.y += convertHeightInCharsToPixels(20);

    return size;
}