Virtual Key strokes to Physical key strokes?

The problem is trying to send keys to another application. Beginner Windows programmers think it is the easy way to control anoher applicatin, but it is not as easy as they think. If you are unfamiliar with Windows then you will have difficulty. I suggest exploring alternatives to the technique of sending keys to an application, but I don't have time to dexplain the alternatives. You need to get a book about Windows or at least use other resources such as that.
 
To be successful with sending keys to a Windows application, you must at a minimum understand the concept of focus. Don't ask me to explain that.