MQL5参考标准程序库面板和对话框CDateTimeDaysInMonth MonthNameShortMonthNameDayNameShortDayNameDaysInMonthDateTimeDateTimeSecMinHourDayMonYearSecDecSecIncMinDecMinIncHourDecHourIncDayDecDayIncMonDecMonIncYearDecYearInc DaysInMonth 获取月内天数。 int DaysInMonth() const 返回值 月内天数。 ShortDayName DateTime