如何从jframe捕获图像？（太快了。）
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我之前已经成功完成了此操作，但现在在运行该程序无数次之后，由于屏幕截图而导致的失败太快了。而且，随着jframe逐渐淡入，它将无法获得正确的图像。如何解决此问题？
编辑：所以基本上我正在尝试捕获JFrame中的Jpanels的图像，但是在此过程中，通过从excel宏调用它，捕获的图像原来是上面的图像，而不是我需要的图像。
import java.io.*;
import javax.swing.*;
import java.awt.event.*;
import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
public class TimeTableGraphicsRunner extends JFrame
{
public TimeTableGraphicsRunner()
{
getContentPane().setLayout(new BoxLayout(getContentPane(),BoxLayout.Y_AXIS));
}
public void load(TimeTablePanel pan)
{
pan.setTitle(x.getTitle(TimeTable.titleCount));
getContentPane().add(pan);
}
public void run()throws Exception
{
System.out.println(\"Creating image in panel\");
//setSize(TimeTable.width,TimeTable.height);
getContentPane().setPreferredSize(new java.awt.Dimension(TimeTable.width,TimeTable.height));
pack();
setVisible(true);
System.out.println(\"Image is in panel\");
grabScreenShot();
System.out.println(\"Cleaning up\");
setVisible(false);
System.out.println(\"Finished\");
System.exit(0);
}
private void grabScreenShot() throws Exception
{
BufferedImage image = (BufferedImage)createImage(getContentPane().getSize().width,getContentPane().getSize().height);
getContentPane().paint(image.getGraphics());
try{
ImageIO.write(image, \"png\", new File(\"C:\\\\Users\\\\\"+TimeTable.user+\"\\\\AppData\\\\TimeLineMacroProgram\\\\TimeLine.png\"));
System.out.println(\"Image was created\");
}
catch (IOException e){
System.out.println(\"Had trouble writing the image.\");
throw e;
}
}
}
没有找到相关结果
已邀请:
1 个回复
谷起
public class TimeTableGraphicsRunner extends JFrame implements ComponentListener { public TimeTableGraphicsRunner() { addComponentListener(this); ... snip } ... snip public void componentShown(ComponentEvent e) { grabScreenShot(); System.out.println(\"Cleaning up\"); setVisible(false); System.out.println(\"Finished\"); System.exit(0); } }