The WriteStr method writes a string into serial port.

LONG WriteStr(

      BSTR Str,     // data buffer





  • Str [in] : The string that will be written to serial port.

Return Values : The WriteStr function returns the number of bytes written to virtual serial port.

Note: If virtual serial port was not created, the return value is 0 (zero).

Note: symbol with “0” code is the sign of line end, so all the data, which are sending after that symbol will be lost. That is why if your data has symbols with “0” code, please, use Write/WriteArray/Read/ReadArray methods.