Well i will give it a shot. It's just that you need to install a extra program before running my program...
It's possible to put the Qt interface framework inside your app bundle folder as a "local" framework, thereby eliminating the need to install the framework separately.
The advantage of an external framework is that it can be used by multiple programs. Also, installing an updated framework "updates" all apps that use it. Carbon is a framework, so when you install an OS X update, Carbon usually gets updated, and all apps that use Carbon automatically use the latest Carbon, without relinking.
When you consider the small size of the .dmg installer (4 MB) and the resulting installed footprint (12 MB), you realize that Qt is a work of art. Compare to GTK libraries, which take up 116 MB on my OS X 10.4 system, much more if you made the mistake of including gtk-doc when you installed it with fink's apt-get.
Thanks.