Rewrite LoadDataFromRegistry() and SaveDataToRegistry() as function helpers. With these, we'll be able to load and save data to registry on our choice.
200 ms would mean that the LEDs redraw each 0,2 second and this adds a slight delay. This can be seen if you press the Num lock key (for example) many times in a row and the LED resources won't update instantly. Therefore reducing the value of uElapse should significantly decrease the delay and the LEDs should update in a realistic way. Furthermore, before invalidating the LED resource check the toggle state of the keys.
- Replace the existing header files in favour to a pre-compiled header instead. Furthermore, move all the function prototypes in the pre-compiled header.
- As per the prototype definitions, LoadDataFromRegistry() and SaveDataToRegistry() mustn't accept any number of parameters.
- Rename rsrc.rc to osk.rc (main resource file) as most of user-mode applications name have their main resource as the same application's name anyways.
- When querying and saving the data to registry, use only one value, greatly reducing the bloat of variables (as per the Hermes Belusca's request on #1729 PR).
- Update the header description reflecting the official ReactOS Coding style guidelines.
