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The Mini Shell Extension Framework – Part III

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18 Sep 200516 min read 139.7K   1.4K   46  
Discussion of a small C++ framework to create Windows shell extensions (IShellFolderImpl).
//
// (C) Copyright by Victor Derks <vba64@xs4all.nl>
//
// See README.TXT for detailed details of the software licence.
//
#pragma once


#include <vector>
#include "../include/macros.h"


class CVVVItem
{
public:
	static int GetMaxNameLength(LPCWSTR /*pszName*/) throw()
	{
		return 10; // note: limit is 10 for easy testing.
	}


	CVVVItem() throw() : _nID(0), _nSize(0), _bFolder(false)
	{
	}


	CVVVItem(unsigned int nID, unsigned int nSize, bool bFolder, const CString& strName) :
		_nID(nID),
		_nSize(nSize),
		_strName(strName),
		_bFolder(bFolder)
	{
	}


	CVVVItem(const SHITEMID& shitemid);

	CString GetDisplayName(SHGDNF shgdnf = SHGDN_NORMAL) const;
	void SetDisplayName(CString strNewName, SHGDNF shgdnf = SHGDN_NORMAL);

	SFGAOF GetAttributeOf(bool bSingleSelect, bool bReadOnly) const;

	unsigned int GetID() const throw()
	{
		return _nID;
	}


	void SetID(unsigned int nID) throw()
	{
		_nID = nID;
	}


	unsigned int GetSize() const throw()
	{
		return _nSize;
	}


	void SetSize(unsigned int nSize) throw()
	{
		_nSize = nSize;
	}


	CString GetName() const
	{
		return _strName;
	}


	bool IsFolder() const throw()
	{
		return _bFolder;
	}


	int Compare(const CVVVItem& directoryitem, int nCompareBy, bool bCanonicalOnly) const;
	CString GetItemDetailsOf(UINT iColumn) const;
	CString GetInfoTipText() const;
	int GetIconOf(UINT flags) const; 

	SHITEMID* CreateShellItemId(bool bAddEmptyId = true) const throw();

	ITEMIDLIST* CreateShellItemIdList() const throw()
	{
		return reinterpret_cast<ITEMIDLIST*>(CreateShellItemId());
	}


	bool operator ==(const CVVVItem& item) const throw()
	{
		return _strName == item._strName && _nID == item._nID;
	}

private:

	int CompareByName(const CVVVItem& item) const;

	unsigned int _nID;
	unsigned int _nSize;
	CString      _strName;
	bool         _bFolder;
};


typedef std::vector<CVVVItem> CVVVItems;

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Written By
Software Developer (Senior) Hitachi High-Tech Analytical Science
Netherlands Netherlands
Victor lives in Nijmegen, the oldest city in The Netherlands.
He studied Applied Physics in Delft and works Hitachi High-Tech Analytical Science.

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