Probably the most common Qt core class you'll run into is QString, Qt's container class for character strings. It has similar capabilities to the C++ STL class, std::wstring. Like wstring, it's multibyte. You can construct one from a traditional C-style char * string or another QString.
QString has lots of helper methods, some of which are as follows:
arg: This is used to build up formatted strings (instead ofsprintf)atandoperator[]: These you can use to access a single character in theQStringoperator==,operator!=,operator<,operator>,operator<=, andoperator>=: These compare twoQStringsclear: This empties aQStringand sets it to the null stringcontains: This searches one string for another string or a regular expressioncount: This counts the occurrences of a substring or character in aQStringstartsWithandendsWith: These return true if aQStringstarts with or ends...