C / C++ / MFC

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HWND hwndHelp = ::HtmlHelpW(m_hWnd, csPathToHelpFile, HH_DISPLAY_TOPIC, dwTopic);<br />

IPin* Graph::GetPin(IBaseFilter *pFilter, PIN_DIRECTION PinDir, UCHAR PinCounter) {
    BOOL       bFound = FALSE;
    IEnumPins  *pEnum;
    IPin       *pPin;
    HRESULT	hr =S_OK;
    UCHAR	localPinCounter = 0;

    hr = pFilter->EnumPins(&pEnum);
	if (SUCCEEDED(hr)) {

			while(pEnum->Next(1, &pPin, 0) == S_OK) {
				PIN_DIRECTION PinDirThis;
				pPin->QueryDirection(&PinDirThis);
				if (bFound = ( (PinDir == PinDirThis) && (PinCounter == localPinCounter) ) )
					break;
				pPin->Release();
				localPinCounter++;
			}

			
			pEnum->Release();

	} else {
		
		return 0;
	}

CString Hex(long val)
{	
 
	CString Buf=_T("");
	Buf.Format(_T("%X"),val);
	return Buf;
 
}
int Asc(const CString &cs) 
{	
	unsigned char ch= cs[0];
	return ch;
}
int AscW(const CString &cs) 
{	
	CString g=_T("");
 
	//unsigned char ch= cs[0];
	int ch = cs[0];
 
	g.Format(_T("%d"),ch);
 
	return _ttoi(g);
}
 
CString EncodeUserData_16_bit(CString strUserData)
{
	CString EncodeUserData_16_bit;
	int I=0;
	CString hex_string=_T("");
	
	for( I = 0; I<strUserData.GetLength();I++) 	
	{
		hex_string=_T("");
		CString c=strUserData.Mid(I + 1-1, 1);
		
		int ch=Asc(c);
		
		CString g=_T("");
		g.Format(_T("%d"),ch);
 
		ch=AscW(c);
 
		g.Format(_T("%d"),ch);
	
 
		hex_string=Hex(AscW(c));
 
		if(hex_string.GetLength()<4)
		{
			hex_string=PadZero(hex_string,4);
		}
		EncodeUserData_16_bit=EncodeUserData_16_bit+hex_string;
	}
 
	return EncodeUserData_16_bit;
}