a method I know,
here a rough outline of an Example (I used delphi for a similar app):
1. create an ASV object and place it onto a form
2. set the src to the file you want to display
3. wait for the readyState of the ASV to change to 4 while leting the
App process window messages
4. resize the ASV object to the size specified in the document (you
can get that by using the DOM methods.
5. create an in memory bitmap of the same size
6. paint the content of the ASV to the bitmap using paintToDC() of teh
ASV controll.
or send a msg to the controll so it paints itself to the bitmap.
I don't remember the particulars for that but I had it working before
7. save the bitmap to a file or transform it to a png using some png lib.
8. destroy the ASV object
9. repeat 1-8 for each file