Hello Folks, I'm not an AutoIt noob but I am new to the GuiRegisterMsg command. What I am trying to do is to pop up a "long string edit" window when user double-clicks. Ideally I wanted it to be a duouble-click in the Input box itself but I couldn't get this to work so I was going to settle for a double-click *near* the input box. Here's a severely curtailed version of my almost 1300-line script. From the msgbox "tell-tale" it appears that the GuiRegisterMsg definition interferes