说明：  windows mobile下tapi实现监视电话线路的程序。vs2008下创建，并在windows mobile 6.1下通过测试。
(TAPI Programming on Windows Mobile August 16, 2008, 8:03 pm Download the source code TAPI stands for Telephony Application Programming Interface. TAPI is the Microsoft implementation of CTI (Computer Telephony Interface). TAPI provides a common interface to communicate and control a telephony device. TAPI simplifies the telephony programming since the programmer does not require detailed information about the hardware he/she is using. Windows Mobile 5 support TAPI version 2.0. The version 2.0 brings telephony support to any Windows CE applications. The TAPI.DLL file exposes all the TAPI functions. The header file TAPI.H contains the all the function definitions, typedefs,#defines, etc… The application links to COREDLL.DLL file which redirects the calls to TAPI.DLL. The TAPI.DLL uses the TAPI Service Provider DLLs to communicate with the hardware. The TAPI Service Provider (TSP) is the driver for the hardware. Microsoft supplies default Unimodem TSP. The Unimodem TSP supports)