How to get the whole map image after zoom in?

Hi,
I use mapviewer API to generate map images and put them in JSP as well as in Java Applet. I called the method getGeneratedImage(). After I using the methods zoomIn() or zoomOut(), I got a new map image. But the size is fixed, so after zoom in I can only see a part of the whole map. I would like to use scrollbar to see other part of the map after zoom in.
How can I solve this problem? I have the images as predefinied themes saved in database with MBR information.
Thanks in advance.

Hi,
For the map request in MapViewer you may define the data area that you want to display, as well as the device size (width and height). The result is a java Image with width and height sizes. You can draw this image on a canvas with scroll bars, and if the size of the canvas is smaller than the image size, then you should see the scroll bars. But you have to code that. MapViewer will just return an Image with the specified size.
The zoom in/out options just change the data area, but keeps the device size. Therefore you should use the API methods to set the data area (setBox or setCenterAndSize) and to set the device size (setDeviceSize), in order to control the size of your resulted image, and then draw it on your canvas with scroll bars.
Regards.

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