Click here to Skip to main content
15,891,633 members
Articles / Desktop Programming / ATL

The Mini Shell Extension Framework – Part III

Rate me:
Please Sign up or sign in to vote.
4.96/5 (11 votes)
18 Sep 200516 min read 142K   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 the details of the software licence.
//
#include "stdafx.h"

#include "testcolumnprovider.h"
#include "../vvvsample/columnproviderclsid.h"
#include "../include/columnproviderptr.h"
#include "../include/util.h"


namespace
{

void CreateAndCheckColumnProvider(const wchar_t* wszFilename)
{
	MSF::IColumnProviderPtr columnprovider(__uuidof(CColumnProvider));

	unsigned long nColumns = columnprovider.GetColumnCount();

	CStringW strFile = MSF::GetModuleDirectoryW() + wszFilename;

	for (unsigned long i = 0; i < nColumns; ++i)
	{
		SHCOLUMNINFO columninfo;

		if (!columnprovider.GetColumnInfo(i, columninfo))
			_com_raise_error(E_FAIL);

		_variant_t varData;
		if (!columnprovider.GetItemData(strFile, columninfo.scid, varData))
			_com_raise_error(E_FAIL);
	}
}

} // namespace


void TestColumnProvider::Sanity()
{
	CreateAndCheckColumnProvider(L"sample1.vvv");
}


void TestColumnProvider::FileNotFound()
{
	try
	{
		CreateAndCheckColumnProvider(L"filenotfound.vvv");
	}
	catch (const _com_error&)
	{
		// expect failed HRESULT.
		return;
	}

	_com_raise_error(E_FAIL);
}


void TestColumnProvider::IncorrectType()
{
	MSF::IColumnProviderPtr columnprovider(__uuidof(CColumnProvider));

	unsigned long nColumns = columnprovider.GetColumnCount();

	CStringW strFile = MSF::GetModuleDirectoryW() + L"sample.yyy";

	for (unsigned long i = 0; i < nColumns; ++i)
	{
		SHCOLUMNINFO columninfo;

		if (!columnprovider.GetColumnInfo(i, columninfo))
			_com_raise_error(E_FAIL);

		_variant_t varData;
		if (columnprovider.GetItemData(strFile, columninfo.scid, varData))
			_com_raise_error(E_FAIL); // should not return data.
	}

	SHCOLUMNINFO columninfo;
	if (columnprovider.GetColumnInfo(nColumns + 1, columninfo))
		_com_raise_error(E_FAIL); // should not return ok.
}


void TestColumnProvider::StandardSortPerformance()
{
	CStringW strSample1 = MSF::GetModuleDirectoryW() + L"sample1.vvv";
	CStringW strSample2 = MSF::GetModuleDirectoryW() + L"sample2.vvv";

	MSF::IColumnProviderPtr columnprovider(__uuidof(CColumnProvider));

	SHCOLUMNINFO columninfo;

	if (!columnprovider.GetColumnInfo(0, columninfo))
		_com_raise_error(E_FAIL);

	columnprovider.GetItemData(strSample1, columninfo.scid);
	columnprovider.GetItemData(strSample2, columninfo.scid);

	if (!columnprovider.GetColumnInfo(1, columninfo))
		_com_raise_error(E_FAIL);

	columnprovider.GetItemData(strSample1, columninfo.scid);
	columnprovider.GetItemData(strSample2, columninfo.scid);
}


void TestColumnProvider::SimpleSort()
{
	CStringW strSample1 = MSF::GetModuleDirectoryW() + L"sample1.vvv";
	CStringW strSample2 = MSF::GetModuleDirectoryW() + L"sample2.vvv";

	MSF::IColumnProviderPtr columnprovider(__uuidof(CColumnProvider));

	SHCOLUMNINFO columninfo;

	if (!columnprovider.GetColumnInfo(0, columninfo))
		_com_raise_error(E_FAIL);

	columnprovider.GetItemData(strSample1, columninfo.scid);
	columnprovider.GetItemData(strSample2, columninfo.scid);
}

By viewing downloads associated with this article you agree to the Terms of Service and the article's licence.

If a file you wish to view isn't highlighted, and is a text file (not binary), please let us know and we'll add colourisation support for it.

License

This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.

A list of licenses authors might use can be found here


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.

Comments and Discussions