InfoPath Dev

I have an InfoPath Form which has buttons across the top.  When the user clicks on a button the form swtiches views to the View corresponding to the button.  The customer however wants separate buttons for one particular view, lets say ViewA, there may be 1, 2, or 3 buttons depending on another field on the form.  So, for example, ...

I have put in code to an InfoPath form which will make changes to the XML.  Based upon certain conditions, I want to cancel these changes programmatically.  Is there a way to do this?  

Ok, thanks for all the information. Beth

Ok, thanks.  Then is there a way to trap the Cut action so that I can perform some type of custom logic?

I have a repeating table control on my InfoPath form.  When I run the form, a shortcut menu appears next to the current row in the repeating table.  I was able to disable the insert, remove, etc from this shortcut menu, but I don't see a way to disable the cut/copy/paste options.  Is there a way to do this?  

Ah, thanks for the reply.  I didn't realize I could put controls into a table header row.

I have not tried a calculated value field, how would this work? Thanks, Beth

I have a table with title control (layout) on my InfoPath form.  I would like to set the value of the header of the table based upon a value that the user sets in a particular field somewhere else on the form.  Is this possible?

I have several sections on an InfoPath form, as well as a repeating table.  Whenever I navigate to a section, the entire section is highlighted.  Is there a way to prevent the highlighting of the current section?  Also, is there a way to prevent highlighting of the current row of a repeating table?

I am trying to use the View.SelectText method to set focus to a field on a View.  However, I keep getting an error:  "The specified values for the View.SelectText call are not valid."  Any ideas what I am doing wrong here?  I have the following code: XPathNavigator newNode = ...