浮动按钮是AWT？ [英] Floating button is AWT?

问题描述

所以，我一直在Java中使用图形用户界面，因为就个人而言，我不能忍受的GUI避免。但是，我已经开始要求我使用图形用户界面，以及令人惊讶，我有问题的项目..我有此位的code ..

So, I've always avoided using GUIs in java because, personally, I can't stand GUIs. But, I've started a project which requires me to use GUIs, and, unsurprisingly, I'm having problems.. I have this bit of code..

public class DefaultWindow extends Window
{
    private DefaultWindow(Frame owner)
    {
        super(owner);
        contained = owner;
    }
    public DefaultWindow()
    {
        this(new Frame(""));
        contained.setBackground(Color.black);
        contained.setLocation(0, 0);
        contained.setSize(1280,720);
        Button comp = new Button("Hello");
        comp.setLocation(0, 0);
        comp.setSize(10, 10);
        add(comp);
        pack();
        contained.setVisible(true);
    }
}

..它创建一个1280x720的窗口，黑色背景（这是很好），它还会在我的屏幕顶部左上角的浮动按钮..我该如何使按钮是在窗口？

.. and it creates a 1280x720 window with a black background (which is good) and it also creates a floating button in the top left-hand corner of my screen.. How do I make the button be in the window?

推荐答案

您正在创建窗口，它在其构造函数中，创建一个框架（这本身就是一个窗口）的子类的实例。你这显示空框，并添加按钮，你创建的窗口。那么，到底你有两个窗口。

You're creating an instance of a subclass of Window which, in its constructor, create a Frame (which is itself a Window). You're showing this empty frame, and add the button to the window you're creating. So in the end you have two windows.

我觉得你真正想要的是创造一个且只有一个框架。您的类不应该扩展窗口，而这一切不应该在构造函数来完成。此外，AWT是一种过时。你应该用摇摆。 Oracle有左右摇摆很大的教程，这也BTW介绍了如何使用布局管理器（你应该这样做）。 阅读本教程。

I think that what you really want is to create one and only one Frame. Your class shouldn't extend Window, and all this shouldn't be done in a constructor. Moreover, AWT is kind of obsolete. You should be using Swing. Oracle has a great tutorial about Swing, which BTW also explains how to use layout managers (which you should do). Read this tutorial.

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