hi, i have a program that reads the string from App-A, then processed by my App, and send the result to another App-B. My problem is how can i send this string of text to App-B? using spy++ i found my target is "RichEdit20A" control and its Caption is Blank (""). using cheat engine, i found the string of address 12DDCC is changed whenever i edit the textbox, but changing the value of this address directly does not change it at all. I think sendmessage api may do the work but i dont know how to translate these codes/address to work. thanks!