access controls on other windows

Question

How can I access to the controls on another application\'s window?
I need to change the value of that controls (like textboxes) or click on them (like buttons).
I th

Answer 1

you should use Windows APIs like EnumWindow or FindWindow then use EnumChildWindows API to find the controls in the target window, like the textbox you are looking for, then the API SetWindowText

have a look here for some ideas: Why is EnumChildWindows skipping children? also search for these APIs names here in Stack Overflow and you will find many examples...