Solved
Cannot find the window with handle 0
Due to TC not be able to identify code-jock tabs in my desktop application I have had to use text recognition to find each tab and then inspect the text image to see if it is the current tab colour....
SOLVED:
When edits were made to the form the tab label would change e.g. "myForm" becomes "myForm*"
The textObj assignment was being given the handle for the destroyed text object.
I had to execute a refresh on the parent object before making the assignment.
