Hello.
How i hide a panel and later show it again?
Thanks in advance.

In Lite-C you can hide/unhide a panel with the code below:

PANEL* pnl_name = {
...
}

// Set Panel VISIBLE
set(pnl_name,VISIBLE);

// Set Panel INVISIBLE
reset(pnl_name,VISIBLE);

PS: Just looked to the manual - You should use SHOW instead of VISIBLE (However VISIBLE works too)

eg:
reset (myPanel, SHOW);//invisible
set (myPanel, SHOW);//visible