Develop C++ IDE

[Zlatomir]

Or maybe you can get inspiration from Qt Creator, since it's open source, here is a link to Qt Creator 2.1 source

[wysota]

Or you can drop your project and instead extend QtCreator. Many people would benefit from that.

[squidge]

What you need to ask yourself is "Does anyone want yet another C++ editor?". There are lots of editors already out there, why do want to put the time and effort into something that has already been done multiple times?

For example, Qt Creator does what you want and is free.
Netbeans does what you want and is free, cross platform, and multi language.
CodeLite does what you want and is free.
Visual Studio Express does what you want and is free.
etc...

If you want specific features that other editors don't have, then implement them via plugins. No need to write yet another editor from scratch.

[stampede]

why do want to put the time and effort into something that has already been done multiple times?

I second that. Writing yet another text/code editor makes very little sense.
But if you simply enjoy doing it and/or you feel that you can learn a lot, then just do it.

What you need to ask yourself is "Does anyone want yet another C++ editor?"

Correct. And continue with your project if the answer is "Yes, I want it".