It is ok now Koldo...
Firstly I added lots of files and the generated errors were in a big number. Last try I added on by one file from Controls4U project and now it is working great.
One more question please, when we use the IE browser embedded in C# form, it is possible to call C code (project) from javascript code (javascript inside browser object). Is it possible too with your Control wrapper? If not, any tips to add that functionality?