如何打印单个 JPanel 的内容? [英] How can I print a single JPanel's contents?
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问题描述
我有一个带有两个带有图片的标签的 JPanel
.我需要打印 JPanel
的这些内容.请帮帮我.我怎样才能只打印这个 JPanel
的内容,因为我的 JFrame
上也有不同的组件,但我只需要打印 this JPanel
.
I have a JPanel
with two labels with pictures. I need to print these content of the JPanel
. Please help me out. How can I print only this JPanel
's contents, as I also have different components on my JFrame
but I just need to print this JPanel
.
谢谢.
推荐答案
这是一个打印任何 Swing 组件的示例.
Here is an example to print any Swing component.
public void printComponenet(Component component){
PrinterJob pj = PrinterJob.getPrinterJob();
pj.setJobName(" Print Component ");
pj.setPrintable (new Printable() {
public int print(Graphics pg, PageFormat pf, int pageNum){
if (pageNum > 0){
return Printable.NO_SUCH_PAGE;
}
Graphics2D g2 = (Graphics2D) pg;
g2.translate(pf.getImageableX(), pf.getImageableY());
component.paint(g2);
return Printable.PAGE_EXISTS;
}
});
if (pj.printDialog() == false)
return;
try {
pj.print();
} catch (PrinterException ex) {
// handle exception
}
}
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