I apllying the tutorials of www.conitec.net/lite-c

and on workshop06 .... the lesson was about creating buttons and click on it with the mouse. but i could not click on it , and the same thing with slides , they don't move.
i need help in this beuase i can not move to the next lesson unless I finish current .

The code samples of this tutorial
can be downloaded here:
http://server.opgroup.de/down/litec_samples.zip