Enumerating Serial Ports On Pocket PC

//////////////////////////////////////////////////////////////////////
// COMEnum.h: interface for the CCOMEnum class.
//
//////////////////////////////////////////////////////////////////////
// Copyright � 2005 Advatronix LLC
//
// With all inquiries please e-mail to:
// contact@advatronix.com
// or
// advatronix@yahoo.com
//////////////////////////////////////////////////////////////////////
// This code provided for non-commercial use only! As such it can be
// compiled and distributed in compiled form ONLY for "not for profit"
// applications ONLY!
//
// Re-distribution of the source code itself modified or unmodified is
// strictly prohibited without prior authorization!
//
// This code/software provided "AS IS" with no expressed or implied warranties.
// In no event should Advatronix LLC or its affiliates be liable for any
// direct, indirect, incidental, special, exemplary, or consequential
// damages of any kind, or any damages whatsoever, including, without
// limitation, those resulting from loss of use, data or profits,
// arising in any way out of the use of this software, even if
// advised of possibility of such damage.
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_COMENUM_H__93F1FC87_21D6_426C_AA0E_AC571557AA43__INCLUDED_)
#define AFX_COMENUM_H__93F1FC87_21D6_426C_AA0E_AC571557AA43__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000


//--------------------------------------------
// Error codes for registry accesses
//--------------------------------------------
#define	REG_NOERROR			0
#define	REG_HKEY_ERROR		1
#define	REG_NOKEY_ERROR		2
#define	REG_KEYREAD_ERROR	3


class CCOMEnum  
{

// Custom Types
protected:
	struct COMINFOEX
	{
		CString	sPortName;		// such as COM1
		int		iPortIndex;		// such as 1
		CString	sPortKey;		// such as "Drivers\BuitIn\Serial"
	};

//Variables
protected:
	UINT		m_iTotalCOMs;		// Holds total number of ports found
	COMINFOEX	*m_pInfoAr;			// Info Array pointer
	UINT		m_RegError;			// Holds Registry access error codes

//Methods
public:
	CCOMEnum();
	virtual ~CCOMEnum();
	virtual void EnumerateCOMs(BOOL Verify);
	inline virtual UINT GetTotalComs(void) { return m_iTotalCOMs; };
	inline virtual int	GetPortIndex(UINT ArIndex) { if(ArIndex < m_iTotalCOMs) return m_pInfoAr[ArIndex].iPortIndex; return 0;};
	inline virtual CString	GetPortName(UINT ArIndex) { if(ArIndex < m_iTotalCOMs) return m_pInfoAr[ArIndex].sPortName; return "";};
	inline virtual CString	GetPortKey(UINT ArIndex) { if(ArIndex < m_iTotalCOMs) return m_pInfoAr[ArIndex].sPortKey; return "";};
	virtual CString GetPortSimpleKey(UINT ArIndex);
	
protected:
	CString ReggyReadString(HKEY hkeyParent, LPCTSTR pSubkey, LPCTSTR pcszKey);
	int ExtractPortIndex(CString portName);
	BOOL VerifyHandle(CString portName);
};

#endif // !defined(AFX_COMENUM_H__93F1FC87_21D6_426C_AA0E_AC571557AA43__INCLUDED_)