Change the time, date and clock display format programaticaly using TLocale
Symbian OS provides the TLocale class to set the system-wide locale settings including time,date and clock. In Symbian OS most applications do not need to change the locale settings; they just use the system setting instead.
//To set time format
//To set date format
//To set clock format
Note: After TLocale::Set() function has been called, other applications may use the new settings for newly-constructed TLocale objects, or if they use TLocale::Refresh(), to refresh their settings from the system copy.