将文本字段添加到Java中的图形 [英] Adding textfield to Graphics in java

问题描述

有谁知道如何将 JTextField 添加到图片名称 bufferstrategy.getDrawGraphics 中？
尝试将它痛苦地刻入图形，如下所示：

  private JTextField Input = new JTextField（）; 
 BufferStrategy bs = getBufferStrategy（）; 
 
 if（bs == null）{
 createBufferStrategy（3）; 
 return; 
} 
 
最终图形gCommands = bs.getDrawGraphics（）; 
 Graphics gCC = bs.getDrawGraphics（）; 
 Input.requestFocus（）; 
 Input.paint（gCC）; 
 Input.setBounds（800,250,350,20）; 
 Input.setBorder（BorderFactory.createLineBorder（Color.BLACK，0））; 
 Input.setEditable（true）; 
 Input.setBackground（getBackground（））; 
 Input.setForeground（getForeground（））; 
 Input.addKeyListener（key）; 
  

但是，尽管显示了它，但我无法编辑它。即使 Input.setBounds（800,250,350,20）也不起作用。上面写的这个方法，在一个gameloop中被调用。任何人都可以帮助我吗？

解决方案

在 Graphics 不要让它成为现场组件。组件需要被添加到一个有效的容器，该容器在它们生效之前附着到本地对等体。

目前，您唯一要做的就是生成一个橡皮图章/图像上下文表面上的组件图像。

有一些技巧，因为绘画过程期望组件附着到

 <$> 
 
 
首先，您必须准备该字段... 
 c $ c> Input.setBounds（800,250,350,20）; 
 Input.setBorder（BorderFactory.createLineBorder（Color.BLACK，0））; 
 Input.setEditable（true）; 
 Input.setBackground（getBackground（））; 
 Input.setForeground（getForeground（））; 
  

然后你需要画它。该字段不会自动重新绘制，这与该字段没有附加到本地对等体...

  Input.printAll（GCC）; 
  

如果你想要一个life组件，你将不得不将组件添加到容器中。这在使用缓冲策略时可能会有问题...

Swing组件已经被双缓冲。

Does anyone know how to add JTextField into Graphics name bufferstrategy.getDrawGraphics? Tryed to pain it into graphics, something like this:

private JTextField Input = new JTextField();
BufferStrategy bs = getBufferStrategy();

if (bs == null) {
    createBufferStrategy(3);
    return;
}

final Graphics gCommands = bs.getDrawGraphics();
Graphics gCC = bs.getDrawGraphics();
Input.requestFocus();
Input.paint(gCC);
Input.setBounds(800,250, 350,20);
Input.setBorder(BorderFactory.createLineBorder(Color.BLACK, 0));
Input.setEditable(true);
Input.setBackground(getBackground());
Input.setForeground(getForeground());
Input.addKeyListener(key);

But, eventhough it displayed, I could not edit it. Even the Input.setBounds(800,250, 350,20) did not work. This method that is written above, is being called inside a gameloop. Can anyone help me?

解决方案

Painting a component on a Graphics won't make it a "live" component. Components need to be added to a valid container that is attached to a native peer before they become live.

At the moment, the only thing you are doing is producing a "rubber stamp"/image of the component on the surface of the graphics context.

There are some tricks to this, as the painting process expects that the component is attached to a valid, native peer.

First, you must prepare the field...

Input.setBounds(800,250, 350,20);
Input.setBorder(BorderFactory.createLineBorder(Color.BLACK, 0));
Input.setEditable(true);
Input.setBackground(getBackground());
Input.setForeground(getForeground());

Then you need to paint it. The field will not automatically repaint, again, this has to do with the field not been attached to a native peer...

Input.printAll(gCC);

If you want a life component, you are going to have to add the component to the container. This may be problematic when using a buffer strategy...

Swing components are already double buffered.

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