MarshallSoft Xbase++ serial communication component library (DLL) for serial port communications. Uses the standard Windows API to communicate with any device connected to a serial port. Includes 28 functions plus modem control, ASCII/XMODEM/YMODEM protocols, and multiple example programs. WSC4XB features include: Can control any serial device connected to the serial port. Can control multiple ports simultaneously. Is fully thread safe. Supports Windows 95/98/Me/NT/2000/XP Can send Windows messages on completion of events (incoming character, etc.). Works with all versions of Xbase++. Does not depend on support libraries. Makes calls to Windows API functions only. Can also use with C/C++, Visual Basic, Delphi, PowerBASIC, Visual FoxPro, Visual dBASE, and COBOL. Can be ordered with or without source code for the DLL. The evaluation version of WSC4XB is fully functional and can be downloaded from http://www.marshallsoft.com/wsc4xb.htm.