2013-11-24 61 views
0

首先,我知道這個問題之前曾被問到過(JFrame to image without showing the JFrame)。 然而,由於礦井糟糕的編碼,我想從別人如何從我的編碼刪除的JFrame出來問的幫助,如下圖所示:刪除Java中的JFrame

package com.example.ImageScreen; 

import java.awt.Color; 
import java.awt.Dimension; 
import java.awt.Graphics; 
import java.awt.Graphics2D; 
import java.awt.image.BufferedImage; 
import java.io.File; 
import java.io.IOException; 

import javax.imageio.ImageIO; 
import javax.swing.*; 

//public class ImageScreen extends JPanel{ 
public class ImageScreen extends JPanel{ 
    private static final long serialVersionUID = 1L; 
    private BufferedImage image; 

    public ImageScreen() { 
     setSize(600,600); 
    //  setMinimumSize(new Dimension(250,250)); 

     try { 
               //Load the image 
      image = ImageIO.read(new File("C:/Users/User/Downloads/Geoffs_Picture_Overlay_App/crosshair.gif")); 
     } catch (IOException e) { 
      e.printStackTrace(); 
     } 
    } 

    @Override 
    public void paintComponent(Graphics g) { 
     super.paintComponent(g); 
     Graphics2D g2d = (Graphics2D) g.create(); 
           //Paint it on screen 
     g2d.drawImage(image, 0, 0, image.getWidth(), image.getHeight(), null); 
     g2d.dispose(); 
    } 

    public static void main(String[] args) { 
     JFrame window = new JFrame("An Image On Screen"); 
           window.add(new ImageScreen()); 
           window.setLocationRelativeTo(null); 
           window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
           window.pack(); 
           window.setVisible(true); 
          //  window.setAlwaysOnTop(true); 
           window.setBackground(Color.CYAN); 
           window.setUndecorated(true); 
          // window.dispose(); 

    } 

} 
+0

你是什麼意思'如何刪除JFrame出',設置爲隱形?處置?或者是其他東西? – alex2410

回答

0

使用 - window.setVisible(false)

0
  1. 使用JLabel來顯示圖像。當您以實際尺寸繪製圖像時,不需要進行自定義繪畫。

  2. 應該在pack()之前調用setUndecorated(...)方法並使框架可見。