如何將JButton添加到Canvas（）？或者如何將JButton添加到Panel（）並將Panel（）背景設置爲透明？

Question

如何添加JButton到我的Canvas？

public class mywindow extends Window 
{ 
    private static final Canvas canvas = new Canvas(); 
    private JButton button; 

    public mywindow 
    { 
     super(new Frame()); 
     button = new JButton("close"); 
     setLayout (new BorderLayout()); 

     //Step 1 - failed 
     add("North", canvas); 
     canvas.setSize(300,300); 
     canvas.setLocation(0,0); 

     // button = new JButton(my, "close"); will not work 
     // How can I add the button to the canvas? 

     //Step 2 - works, but it gets the background color, instead of real transparency. 
     //JPanel p = new JPanel(); p.setOpaque(false); 
     //p.setSize(300,300); p.setLocation(0,0); 
     //add("North", p); 
     //p.add("Left", button); 
    } 
} 

Answer 1

請不要混合AWT與Swing。今天，需要Swing代碼JPanel。當然，可以將AWT與Swing混合使用，但是可能會將意外輸出到GUI。對於透明度，您必須查看How to Create Translucent and Shaped Windows並在此處搜索示例。

編輯：最好的和更好的輸出到GUI檢查，LayoutManagers如何工作。