Is there a way to add a file type to the file filter?

[软件梦工厂]

I get the full-package-8.04 and install it on Ubuntu 10.04 follow the
tutorial(http://www.ex-dev.com/en/tools/exvim/documentation/tutorial/
install/#install-exvim-in-linux-mac).
After convert many .vim files to unix fileformat ,it now work
correctly.But when I want to add a file but it's type not in the file
filter lists(e.g. .cmake and CMakeLists.txt),it's not show in the
project tree after re-open the project.I tried add these types to any
place where .mk exists in the folder ~/.vim,but no effect.Is there a
way to add a file type to the file filter and how to?

[Wu Jie]

You can add the file filter at the beginning of the Project Window.
When you browse a project in Project Windows, the first two lines
indicate exvim to search the file in the rule you write there. So just
add your file type suffix in the first line --- file filter to fulfill
your demand.