InfoPath Dev

That checkbox is for the contextual ribbon - it may require some custom code to take that focus and pass it as a parameter to your form the way you're asking.  However, there are much more direct built-in methods of doing what you're trying to accomplish.  The first thing is that I don't think the comments should be an entire form saved in the same form library.  That's totally up to you, but there is nothing about the comments form that requires InfoPath, or at least it doesn't require a full form library template.  What I would suggest trying (if you aren't tied to your current solution) is this:

• Keep the first form as-is
• Create a custom list for the comments, convert the list to InfoPath, and add an InfoPath form web part to the bottom of the page from Fig1 (or to the right if you prefer)
• In the custom list, either create a lookup column back to the form library, or create a receive data connection and connect it to a dropdown field in the custom list form (bound to a regular text field)
• Then, connect the web parts by choosing "Send Row of Data to," then "Get Data From," then match the two fields.  The key will be that when you configure your dropdown in the custom list, set the Value to ID and the Display Name to Title/Name or whatever you're using to reference the associated form.  Then, in the web part connection, be sure to pass the ID into the dropdown field.

The result of the above is that your form library items will have double arrow icons on the left that you select to highlight that row (not the same as the checkbox you referenced), and when selected, that form's ID will be inserted into the comment form's dropdown for direct association.  Similarly, you could use this method to display all comments for a given form in ONE display form within an InfoPath form web part, which is very powerful and efficient.

I appreciate your solution very much but I have to approach my management team for approval of  this implementation.

Thanks for your great suggestions.

Prakash