一个windows shell extension的例子

下面的例子演示了windows shell扩展编程的一般方法———获取目录c:\program files\下的对象，然后再列出改目录下的第一个子目录中的对象。

#include "stdafx.h"

#include

#include

int _tmain(int argc, _TCHAR* argv[])

{

   LPITEMIDLIST pidlProgFiles = NULL;

    LPITEMIDLIST pidlItems = NULL;

    IShellFolder *psfFirstFolder = NULL;

    IShellFolder *psfDeskTop = NULL;

    IShellFolder *psfProgFiles = NULL;

    LPENUMIDLIST ppenum = NULL;

    ULONG celtFetched;

    HRESULT hr;

    STRRET strDispName;

    TCHAR pszDisplayName[MAX_PATH];

    ULONG uAttr;

   

    CoInitialize( NULL );

    hr = SHGetFolderLocation(NULL, CSIDL_PROGRAM_FILES, NULL, NULL, &pidlProgFiles);

// hr = SHGetFolderLocation(NULL, CSIDL_DESKTOP, NULL, NULL, &pidlProgFiles);

    hr = SHGetDesktopFolder(&psfDeskTop);

    hr = psfDeskTop->BindToObject(pidlProgFiles, NULL, IID_IShellFolder, (LPVOID *) &psfProgFiles);

    psfDeskTop->Release();

    hr = psfProgFiles->EnumObjects(NULL,SHCONTF_FOLDERS | SHCONTF_NONFOLDERS, &ppenum);

    while( hr = ppenum->Next(1,&pidlItems, &celtFetched) == S_OK && (celtFetched) == 1)

    {

        HRESULT ret = psfProgFiles->GetDisplayNameOf(pidlItems, SHGDN_INFOLDER, &strDispName);

if(FAILED(ret))continue;

        ret = StrRetToBuf(&strDispName, pidlItems, pszDisplayName, MAX_PATH);

if(FAILED(ret))continue;

MessageBox(NULL,pszDisplayName,_T("1111"),0);

wprintf(_T("%s\n"),pszDisplayName);

        if(!psfFirstFolder)

        {

            uAttr = SFGAO_FOLDER;

            psfProgFiles->GetAttributesOf(1, (LPCITEMIDLIST *) &pidlItems, &uAttr);

            if(uAttr & SFGAO_FOLDER)

            {

                hr = psfProgFiles->BindToObject(pidlItems, NULL, IID_IShellFolder, (LPVOID *) &psfFirstFolder);

            }

        }

        CoTaskMemFree(pidlItems);

    }

    ppenum->Release();

    if(psfFirstFolder)

    {

        hr = psfFirstFolder->EnumObjects(NULL,SHCONTF_FOLDERS | SHCONTF_NONFOLDERS, &ppenum);

        while( hr = ppenum->Next(1,&pidlItems, &celtFetched) == S_OK && (celtFetched) == 1)

        {

            psfFirstFolder->GetDisplayNameOf(pidlItems, SHGDN_INFOLDER, &strDispName);

            StrRetToBuf(&strDispName, pidlItems, pszDisplayName, MAX_PATH);

wprintf(_T("%s\n"),pszDisplayName);

            CoTaskMemFree(pidlItems);

        }

    }

    ppenum->Release();

    CoTaskMemFree(pidlProgFiles);

    psfProgFiles->Release();

    psfFirstFolder->Release();

    CoUninitialize();

    return 0;

}

在vs2008中配置SDK 7.0:

开始> 所有程序 > Microsoft Windows SDK v7.0 > Visual Studio Registration > Windows SDK Configuration Tool.

然后在下拉框选择 SDK v7