Using QT Jambi to make screenshots

I am using QT Jambi (java) to make screenshots of a browser window. My main method starts the framework like this:

QApplication.initialize(new String[1]);

ScreenshotMain widget = new ScreenshotMain();
widget.showFullScreen();
QApplication.exec();

and when the browser is done with the loading the following method is invoked and takes the screenshot.

public void loadDone() {
// Taking screenshot
QPixmap pixmap;
pixmap = QPixmap.grabWidget(browser);

pixmap.save(writeTo, "png");
System.out.println("Made screenshot "+writeTo);

browser.loadProgress.disconnect(this);
browser.loadFinished.disconnect(this);
QApplication.closeAllWindows();

}

My question now is the following:

How can I make screens开发者_如何学JAVAhots out of an application without having to open a browser window, have it load the content. The idea is that I have a server application and I don´t want to open a window to make the screenshot.

Does anyone of you have experience to make screenshots using QT Jambi in this way.

Thanks a lot for your help Marc

This might be what you are looking for: linky