在Java中更改MessageBox中按钮的预选？

我有以下情况：

MessageBox messageBox = new MessageBox(GetShell(), SWT.ICON_QUESTION | SWT.YES | SWT.NO);
      messageBox.setText("Question");
      messageBox.setMessage("Message");
      int answer = messageBox.open();

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这将输出一个消息框，其中预选了“是”按钮。是否可以使用此选项将初始选择的“是”更改为“否”，或者只能通过对话框执行此操作？

否，无法执行此操作。这种行为是给定的。但是，您可以通过添加两个按钮并在要执行以下操作的按钮上调用

forceFocus

来创建自己的对话框：

Button button1 = new Button(shell, SWT.PUSH);

Button button2 = new Button(shell, SWT.PUSH);

button1.setText("Click me!");
button2.setText("Look at me, I have the focus now.");

//Here you set the focus to the second button
button2.forceFocus();
button1.setBounds(0, 0, 100, 30);
button2.setBounds(200, 0, 200, 30);

shell.pack();
shell.open();
//Prevent from closing
while (!shell.isDisposed()) {
  if (!display.readAndDispatch()) {
    display.sleep();
  }
}
display.dispose();

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不，没有办法。这种行为是给定的。但是，您可以通过添加两个按钮并在要执行以下操作的按钮上调用

forceFocus

来创建自己的对话框：

Button button1 = new Button(shell, SWT.PUSH);

Button button2 = new Button(shell, SWT.PUSH);

button1.setText("Click me!");
button2.setText("Look at me, I have the focus now.");

//Here you set the focus to the second button
button2.forceFocus();
button1.setBounds(0, 0, 100, 30);
button2.setBounds(200, 0, 200, 30);

shell.pack();
shell.open();
//Prevent from closing
while (!shell.isDisposed()) {
  if (!display.readAndDispatch()) {
    display.sleep();
  }
}
display.dispose();

---

MessageBox来自哪个库？抱歉，它来自org.eclipse.swt.widgets.MessageBox；MessageBox来自哪个库？抱歉，它来自org.eclipse.swt.widgets.MessageBox；