I need to Open a process (easy) and then somehow paste data from my application into this opened application into it's currently active textbox.
How can I get that done?
using the windows clipboard seems like an easy option, if the user can paste manualy, or you control the code for both applications and can make both work with the clipboard
EDIT
Using win 32 api's send message can provide the answer as well, especially if you dont control the code for the process you want to write into, and want it to be 100% automatic.
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The general steps for this solution are: to find the text box, using the FindWindow function and then send the text, using the send message. Note: As far as i understand, the receiving application, should yet have a handler for the message and update accordingly