How can I prevent Messages from opening up a new chat window? When I am working on something else on my iMac, I tend to get a lot of messages via the Messages app.  For some reason, when I click once on the messages app window, it does not get focus right away: Therefore, I usually double-click (Perhaps its a habit from MS Windows).  When you double click inside a chat area, it opens up that specific chat conversation into a new chat window - which is extremely annoying (IMHO).

Is it possible to turn off the feature of opening that chat conversation in a new window?

I am running 10.8.2 and Messages version 7.0.1 (3314).  

EDIT: So some further testing - This happens when:


A different chat session is selected
Messages does NOT have focus
I click into a different chat session inside of my Messages window

this requires two clicks, 1 click to gain focus, 1 click to change chat windows.



All I am looking to do is disable the chat session from opening up in a new, independent window.
Unfortunately this is something that isn't possible. As you are aware, the only control we have over any double-clicking in the "Double-Click Speed" in Mouse preferences. Any changes here would be undesirable as it would affect the entire system and your goal is just the Messages app. 

There is a convenient keyboard shortcut, Command + W, to close the new window that comes up, so at least you don't have to go over and manually close the window.

I suppose this is a feature request that doesn't come up very often but you could at least do what you can and fill out a feature request.