I have tried but failed to do the following requirement. Any input from you folks will be helpful.

Requirement: there is a windows app1 in C++, i need to use .net create a console app (app2) that disables a button (b1) in app1 and adds another button (b2)to app1. The b2 button then does some verification from the form details in app1 and then enables b1.
Also I am not allowed to make any code changes in app1

my problems:
- how to disable a button of a different app.
- how to add a button to a different app.
- how to pass various textbox values from app1 to app2.