[Qt-interest] Using a Qt class in a non-Qt app?

[Brant Sears]

Hi. I have a Cocoa/Carbon application that I want to modify into a Qt  
application. The current application has a user interface written in  
Carbon & Cocoa. The Qt application will not have a UI - it will send  
xml based messages to another application which will display the user  
interface. Therefore, I would like to be able to add some of the Qt  
networking classes to my Carbon/Cocoa app first and work on sending  
the data across so that I can see that the UI between the original app  
and the new app is the same. Then as a last step, I would remove the  
Carbon/Cocoa User Interface.

The problem I am having is that my slots are not getting called which  
I think is because I do not have a QApplication. Therefore, there  
isn't an application run loop dispatching these events.

I could add such a thing, but then I would short circuit the  
NSApplication object that Cocoa uses.

Any idea as to what I should do here?

If not, my best idea is to try to port over the mac app into Qt a  
little bit at a time which will result in having a non-working app for  
a period of time (less desirable). So, before I go there, I wanted to  
ask if there is a way to use a QLocalSocket and have the slots be  
correctly called from a non-Qt app.

Thanks for any advice.