qt designer isn't able to use cpp plugin from kdevelop3

I recently installed kdevelop3 and the qt-designer and I want to create some simple programs that just depend on Qt and not KDE.

I found some tutorials on the internet and one says that I should create a C++ project, then a main window and at last a C++ main file using the qt designer.

I did so but I get the followin...

I recently installed kdevelop3 and the qt-designer and I want to create some simple programs that just depend on Qt and not KDE.

I found some tutorials on the internet and one says that I should create a C++ project, then a main window and at last a C++ main file using the qt designer.

I did so but I get the following error:
"There is no plugin for editing C++ code installed.
Note: Plugins are not available in static Qt configurations."

But kdevelop3-plugins is installed which includes some plugins, one of them is:
/usr/lib/qt3/plugins/designer/libcppeditor.so

This directory is added to the plugin directories in the qt-designer but the error won't go away.

So is this a bug or am I doing anything the wrong way?

Regards,
André