Java JOptionPane背景图像

如何设置JOptionPane的背景图像？我想在JOptionPane的背景上显示不同的图像。

您可以扩展JOptionPane类并重写paint方法

编辑： 根据图像的分辨率和质量，在WindowResize事件期间，您可能能够使用仿射变换拉伸图像，而不会产生太大的失真。这将允许您处理下面提到的JOptionPane和图像大小差异

   class ImageBackgroundPane extends JOptionPane
    {
         private BufferedImage img;

         public ImageBackgroundPane (BufferedImage image)
         {
            this.img = image;
         }

         @Override
         public void paint(Graphics g)
         {
           //Pick one of the two painting methods below.

           //Option 1:
           //Define the bounding region to paint based on image size.
           //Be careful, if the image is smaller than the JOptionPane size you
           //will see a solid white background where the image does not reach.
           g.drawImage(img, 0, 0, img.getWidth(), img.getHeight());

           //Option 2:
           //If the image can be guaranteed to be larger than the JOptionPane's size
           Dimension curSize = this.getSize();
           g.drawImage(img, 0, 0, curSize.width, curSize.height, null);


           //Make sure to paint all the other properties of Swing components.
           super.paint(g);
         }
    }

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