processEvent

[sagarika chinya]

I am changing a program written in a older version to the 1.4 version
when i used -deprecation I had to change the handleEvent to processEvent. Now i have a problem.
I want to capture int value in xPos and yPos but I am getting an erorr.
Could any one pls tell me where I am going wrong and how to correct it??
- thanks
sagarika
Here is the code

 
public void processEvent(AWTEvent e) {
if (e.getSource() instanceof Scrollbar) {
if (e.getSource() == horizontal) {
xPos = ((Integer)e.arg).intValue(); // getting error here
} else if (e.getSource() == vertical) {
yPos = ((Integer)e.arg).intValue(); // error
}
center.redraw (xPos, yPos );
}
super.processEvent(e);
}
 

[Bill Liteplo]

I don't know what 'arg' is. It is certainly not a field of AWTEvent in 1.3.1.
How about trying

xPos = ((Scrollbar)e.getSource()).getValue();

The same method would wok if you wanted to use Swing JScrollBars instead, just the cast would be different.
Bill

[sagarika chinya]

I am writing a program to implement a B+ tree GUI interface. All the classes are compiling but when try to run my main class btview i am getting the following error. i am new to java,could any body explain as to whats going wrong??
thanks
sagarika
Exception in thread "main" java.lang.InternalError: Can't connect to X11 window server using ':0.0' as the value of the DISPLAY variable.
at sun.awt.X11GraphicsEnvironment.initDisplay(Native Method)
at <Unloaded Method>
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:124)
at java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvironment.java:63)
at <Unloaded Method>
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:124)
at java.awt.Toolkit$2.run(Toolkit.java:499)
at java.security.AccessController.doPrivileged(Native Method)
at java.awt.Toolkit.getDefaultToolkit(Toolkit.java:492)
at java.awt.Window.getToolkit(Window.java:432)
at nodeContent.<init>(nodeContent.java:54)
at btview.main(btview.java:25)