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XCalendar is a collection of calendar utilities for Delphi. As you know the Delphi TDateTime type stores date/times as a floating point value representing the time passed from a specific time, or more precisely: The integral part of a Delphi TDateTime value is the number of days that have passed since 12/30/1899. The fractional part of the TDateTime value is fraction of a 24 hour day that has elapsed. A calendar divides time into units, such as weeks, months, and years. The number, length, and start of the divisions vary in each calendar. So any TDateTime value can be decoded to units of an arbitrary calendar and values expressed in units of a calendar can be encoded to TDateTime values. XCalendar contains calendars, database date/time field types, tools to find calendar events and some astronomical stuff.

Testing get Ascii code

说明：  display IP 如何显示外网IP 这个只显示局域网IP(display IP how to display the external IP the only LAN IP)

RSA算法加密 Delphi代码实例，编程学习源码，很好的参考资料。(RSA encryption algorithm Delphi code examples, programmed learning source, a good reference.)

delphi语音kalman滤波，改进了kalman滤波算法，精简了运算量(Improved voice kalman filtering delphi)

传奇木马Delphi源程序，只仅学习使用，非法使用自负(Trojan legend Delphi source code, only the use of study only, illegal use of your own!)

可实现对exe文件进行修改和自我修改个功能，非常好的实例代码，直接调用系统底层，编写规范，思路明确，代码易读。(Exe file can be modified to achieve self-modification and functional, very good example code, call the system directly to the bottom, write specifications, ideas, clear, readable code.)

生成PDF文档的控件，支持中文，待源码。不需要其他的库文件(Control PDF documents generated to support the Chinese, to be source code. The library file does not need other)

不错的数据库连接池实现，很有参考价值。包括多种数据库连接方式的(DB connection pool)

使用Delphi的OnChange事件，Timagelist组件，编程学习源码，很好的参考资料。(Use the Delphi OnChange event, the Timagelist component, learning programming source code, a good reference.)