Enforcing capital letter of every word - InfoPath 2010

Use the translate function to convert the letters to Capital. 

1. Go to text box properties. 
2. Click on fx button beside default value box. 
3. Click on insert function. And select translate function. 
4. Select the text box field as the first parameter, 

"abcdefghijklmnopqrstuvwxyz" as the second parameter and "ABCDEFGHIJKLMNOPQRSTUVWXYZ" as third parameter.