[Inkscape-devel] First core contribution: undefined reference to Class::method()

Hi all,

I'm a extension developer but i want to collaborate with the core. I'm not skilled in C++ and GTK but i'm reading a lot.

I create some long running extensions and will be cool if i can show the percentage and what it is doing while the user wait. So, i want to replace the current simple Gtk::MessageDialog by an Inkscape::Extension::WorkingDialog.

I did my first test code, compiled it, but the make fails on linking. I already refered the new class files on this files: src/extension/CMakeLists.txt and src/extension/Makefile_insert

But i run "./configure && make" and still getting this error: /src/extension/execution-env.cpp:82: undefined reference to `Inkscape::Extension::WorkingDialog::hide()'

Please, see my .diff and error.txt attached files.

PS: i'm thinking in open a pipe to the extension set the percentage and description text.

Thanks! Aurium