Shout out the errors to the compiler. Returns the error stored in the library. If no error, return I_CAL_NO_ERROR. Translates the #ICalErrorEnum to the string representation. Gets the #ICalErrorEnum in the string representation. This method called the icalerrorno_return to get the current error. Sets the state to the corresponding error in the library. Gets the state of an error. Sets the errno. Suppresses the error. Restores the error to specified state.