See if Process has a window?

Is there any way to check if a process has a window or am I just being a ******* and do all process have windows just hidden. What I was trying to do is get the Title Bar Caption of a process with a window. Thanks in advance.

processes don't need to have a window, but may have several. If you want a list of all the windows by a given process, you can use EnumWindows to which you need to send a callback function, which it calls for each window it finds, so in this callbackfunction you test using GetWindowThreadProcessId whether their processid matches.

thanks! Ill give it a try