linux下的日程表开发，提供记录，日程安排提醒等功能，主要由时间控制等相关函数，需要db支持-linux calendar under development, to provide records, scheduling and other functions to remind, the main control by the time correlation function, to support the needs of db

libical,日历功能，日程安排，源代码，支持跨平台(libical, calendar features, scheduling, source code, cross-platform support)