Go4Expert - Error : no operator found

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Error : no operator found

This is my code for the serial port

Code:

BOOL CSerialCom::OpenPort(CString portname)

{

portname= "//./" +portname;



hComm = CreateFile(portname,

                      GENERIC_READ | GENERIC_WRITE,

                      0,

                      0,

                      OPEN_EXISTING,

                      0,

                      0);

        if(hComm==INVALID_HANDLE_VALUE)

        {

                MessageBox("Cannot open Communication Port.Please\nQuit the program and Re-start your PC.","Com Port Error",MB_OK+MB_ICONERROR);

                return false;

        }

                else

                        return true;



}

Iam getting error

Code:

        error C2678: binary '+' : no operator found which takes a left-hand operand of type 'const char [5]' (or there is no acceptable conversion)

Does anyone has solution

re: Error : no operator found

You need to cast "//./" to a CString so that it invokes CString :: operator +(). There is no (char*) :: operator +(), which is what you're trying to invoke.