Grey patches are found while moving pop-up print dialog box

Question

Hi,
Please help me with this one.
I am trying to print in a Windows environment,
I call printJob.printDialog() from my program to get the pop window. But if i move this box with my mouse, it always leaves behind grey patches on my swing application that I developed.
I just don't know what to do.
Any pointers ?

Answer 1

in response to the user selecting "print", do:   Thread pThread = new PrintingThread(instance);   //where instance is a reference to the gui frame
    pThread.start();...and define this class:   class PrintingThread extends Thread {
        JFrame gui;
        PrintingThread(JFrame g)
            gui=g;
            //do any initialization you need here
        public void run()
            gui.setEnabled(false);
            // call printJob.printDialog() here
            //then when it returns do:
            gui.setEnabled(true);