C / C++ / MFC

<br />
    if(!SetCommMask(serialObj.m_hCom, EV_RXCHAR | EV_TXEMPTY)) <br />
		return ERRCODE;<br />
<br />
    while(serialObj.m_hCom != NULL)<br />
	{<br />
		BOOL bRet = WaitCommEvent( serialObj.m_hCom, &dwCommEvt, &serialObj.comReader );<br />
		<br />
		if ( dwCommEvt & EV_RXCHAR ) {<br />
<br />
			do {<br />
				retval = ReadFile( serialObj.m_hCom, &lpBuff, 1, &dwRead, &serialObj.comReader );<br />
	        <br />
				if( retval && dwRead > 0 ) {   <br />
     <br />
 							//code stuff..<br />
							....<br />
							SetEvent(serialObj.hReadEvent);<br />
						}<br />
				}<br />
			} while( dwRead > 0 );<br />
		}<br />
	}<br />
<br />
	AfxEndThread(0);<br />

rp_suman wrote:

WaitCommEvent() returns "false"

rp_suman wrote:

AfxEndThread(0);

George_George wrote:

Could anyone show me the usage of pointer_default please (sample of when we need to use ref, unique and ptr)?

George_George wrote:

Especially for ref and unique, what are the restrictions (exception nullable) compared with normal pointer ptr? Any ideas?

class HiFolks
{
  ostream * _pos;
public:
  HiFolks(ostream * pos):_pos(pos){};
  void setos(ostream * pos){ _pos = pos;}
  void sayHi()
  {
    (*_pos) << "hi folks" << endl;
  }
};



void main()
{
  strstream s;
	
  HiFolks hf(&cout);
  hf.sayHi(); // output goes to console
  hf.setos(&s);
  hf.sayHi(); // output goes to string 
}

George_George wrote:

1. You agree with my points in original post?

George_George wrote:

2. In MSDN, there is no inheritance hierarchy information (at least I can not find from API document for ostrstream, could you find such information from MSDN)? for example ostrstream inherits from ostream.

George_George wrote:

Any other situations which use of this class (compared with other string and stream related class) will give us special benefits?