Disable vertical scrolling in BlackBerry

In BlackBerry I have developed a screen which display a image of size 480 X 360 in background. My BB screen is of size 480 X 360. As the image is bit big in size when I scroll vertically the screen gets scrolled and disturbs my screen.

I want to lock the scrolling such that I will not be able to do vertical scrolling.

My code is as follows:

public LaunchXtcMsngrScreen()
{
    int intwidth = Display.getWidth();
    int intheight = Display.getHeight();


    //getting the height/width of BB screen
    Debugger.debug(UrlInfo.workflow_File,"Screen Height ="+intheight);
    Debugger.debug(UrlInfo.workflow_File,"Screen Width ="+intwidth);

    BMbackground = Bitmap.getBitmapResource("xtclogo.jpg");

    VerticalFieldMan开发者_如何学JAVAager VFM = new VerticalFieldManager(VerticalFieldManager.USE_ALL_WIDTH 
                                                                | VerticalFieldManager.USE_ALL_HEIGHT
                                                                | VerticalFieldManager.NO_VERTICAL_SCROLL
                                                                | VerticalFieldManager.NO_VERTICAL_SCROLLBAR)
    {
        //Override the paint method to draw the background image.
        public void paint(Graphics graphics)
        {   
            //Draw the XTC Messenger logo
            graphics.drawBitmap(0, 0,Display.getWidth(),Display.getHeight(),BMbackground, 0, 0);
            super.paint(graphics);
        }
    };

    Bitmap registerbitmap = Bitmap.getBitmapResource("register_button.PNG");
    BFregister = new ImageButtonField(registerbitmap);

    BFregister.setMargin(245,0,0,190);//vertical pos,0,0,horizontal pos

    VFM.add(BFregister);
    add(VFM);

}

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add the below code as the next line of the function declaration

super(NO_VERTICAL_SCROLL|NO_VERTICAL_SCROLLBAR);

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If you have placed your image inside a manager then u can follow any idea viz:

1) either create a custom manager and write setExtent(480,360) in its sublayout method. 2) you can also write setExtent(480,360) in any HorizontalfieldManager or VerticalFieldManager's sublayout method

have you tried using USE_ALL_WIDTH and USE_ALL_HEIGHT in any manager?