tapiinfo.h

一个tapi开发的很好的语音通信程序

PSTR FormatLineCallback(
    DWORD dwDevice, DWORD dwMsg, DWORD dwCallbackInstance, 
    DWORD dwParam1, DWORD dwParam2, DWORD dwParam3,
    LPSTR szOutputBuffer);

LPSTR FormatTapiError(long lError, LPSTR szOutputBuffer);

LPSTR FormatLastError(DWORD dwLastError, LPSTR szOutputBuffer);