GUI Scrollbar and file browser

[Eric Crockett]

I am trying to get some GUI's working. I am currently using a JFrame and displaying an image. If the image is too big for the screen though, some of it gets cut off. I want to add a scrollbar (vertical for right now) so I can scroll down and see the rest of the pic. This is what I have so far:


class Picture extends JPanel
{
JFrame frame;
static Image image;

public void display()
{
///////////////////CODE////////////////////////LEFT//////////OUT////////////
Picture display = new Picture();

frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(BorderLayout.CENTER, display);
frame.setSize(width,height);
frame.setVisible(true);
}



I am wondering if someone can explain how to use the scrollbar constructor(what all the int values do) and how to get it displayed on the side of the JFrame.

[Stan James]

Swing often winds up with many containers nested in each other. Look into putting a ScrollPane on the content pane, then another JPanel on top of that to hold your screen. YOu can set ScrollPane properties to have vertical and/or horizontal scroll bars all the time or only when needed.

Warning: I don't do a lot of Swing so that may not be exactly the order to lay things together. Snoop around the JavaDoc or google for "scrollpane example" and I bet you'll find your way!

[Lionel Badiou]

Hello Eric,

You may find explanation and sample code for scrolling large picture at How to use scrollpane


Best regards,