Scroll bar problem in PrintPreview control

[Guest]

I have a customized Print Preview dialog made of a Print Preview control.
When I increase to zoom property, the document inside it gets enlarged and
two scroll bars appear. But when I scroll down with Vertical scroll bar, it
doesn't go till the bottom and bounce back upword. Thus unless I
resize(enlarge) the Dialog it self it doesn't show the bottom of the document.
What is the reason for such behavior?
Please guide

 

[Guest]

sorry I couldn't edit last post thats why re-posting edited question again

I have a customized Print Preview dialog made of a Print Preview control.
When I increase to zoom property, the document inside it gets enlarged and
two scroll bars appear. But when I scroll down with Vertical scroll bar, it
doesn't go till the bottom and bounce back upwords if I resize(enlarge) the
Dialog it self. It doesn't show the bottom of the document in any case.
More over when the dialog is compressed and the document in side the preview
control is not 100 % visible widthwise, the expected horizontal scroll
doesn't appear.
What is the reason for such behavior?
Please guide