shfldr.h File Reference

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Classes
struct	shvheader

Macros
#define	CHARS_IN_GUID   39
#define	GET_SHGDN_FOR(dwFlags)   ((DWORD)dwFlags & (DWORD)0x0000FF00)
#define	GET_SHGDN_RELATION(dwFlags)   ((DWORD)dwFlags & (DWORD)0x000000FF)

Functions
LPCWSTR	GetNextElementW (LPCWSTR pszNext, LPWSTR pszOut, DWORD dwOut)
HRESULT	SHELL32_ParseNextElement (IShellFolder2 *psf, HWND hwndOwner, LPBC pbc, LPITEMIDLIST *pidlInOut, LPOLESTR szNext, DWORD *pEaten, DWORD *pdwAttributes)
HRESULT	SHELL32_GetDisplayNameOfChild (IShellFolder2 *psf, LPCITEMIDLIST pidl, DWORD dwFlags, LPSTRRET strRet)
LPITEMIDLIST	SHELL32_CreatePidlFromBindCtx (IBindCtx *pbc, LPCWSTR path)
HRESULT	SHELL32_GetFSItemAttributes (IShellFolder *psf, LPCITEMIDLIST pidl, LPDWORD pdwAttributes)
HRESULT	SHELL32_CompareDetails (IShellFolder2 *isf, LPARAM lParam, LPCITEMIDLIST pidl1, LPCITEMIDLIST pidl2)
HRESULT	SHELL32_CompareChildren (IShellFolder2 *psf, LPARAM lParam, LPCITEMIDLIST pidl1, LPCITEMIDLIST pidl2)
HRESULT	SHELL32_BindToSF (LPCITEMIDLIST pidlRoot, PERSIST_FOLDER_TARGET_INFO *ppfti, LPCITEMIDLIST pidl, const GUID *clsid, REFIID riid, LPVOID *ppvOut)
BOOL	HCR_RegOpenClassIDKey (REFIID riid, HKEY *hkey)
void	AddFSClassKeysToArray (PCUITEMID_CHILD pidl, HKEY *array, UINT *cKeys)
HRESULT	CDefViewBckgrndMenu_CreateInstance (IShellFolder *psf, REFIID riid, void **ppv)
HRESULT	SH_GetApidlFromDataObject (IDataObject *pDataObject, PIDLIST_ABSOLUTE *ppidlfolder, PUITEMID_CHILD **apidlItems, UINT *pcidl)
static __inline int	SHELL32_GUIDToStringA (REFGUID guid, LPSTR str)
static __inline int	SHELL32_GUIDToStringW (REFGUID guid, LPWSTR str)
void	SHELL_FS_ProcessDisplayFilename (LPWSTR szPath, DWORD dwFlags)
BOOL	SHELL_FS_HideExtension (LPCWSTR pwszPath)
void	AddClassKeyToArray (const WCHAR *szClass, HKEY *array, UINT *cKeys)

Macro Definition Documentation

CHARS_IN_GUID

#define CHARS_IN_GUID   39

Definition at line 27 of file shfldr.h.

GET_SHGDN_FOR

#define GET_SHGDN_FOR

(

dwFlags

)

((DWORD)dwFlags & (DWORD)0x0000FF00)

Definition at line 36 of file shfldr.h.

GET_SHGDN_RELATION

#define GET_SHGDN_RELATION

(

dwFlags

)

((DWORD)dwFlags & (DWORD)0x000000FF)

Definition at line 37 of file shfldr.h.

Function Documentation

AddClassKeyToArray()

void AddClassKeyToArray	(	const WCHAR *	szClass,
		HKEY *	array,
		UINT *	cKeys
	)

Definition at line 268 of file shlfolder.cpp.

{
    if (*cKeys >= 16)
        return;
 
    HKEY hkey;
    LSTATUS result = RegOpenKeyExW(HKEY_CLASSES_ROOT, szClass, 0, KEY_READ | KEY_QUERY_VALUE, &hkey);
    if (result != ERROR_SUCCESS)
        return;
 
    array[*cKeys] = hkey;
    *cKeys += 1;
}

Referenced by AddFSClassKeysToArray(), CDrivesContextMenu_CreateInstance(), CGuidItemContextMenu_CreateInstance(), CDesktopFolder::CreateViewObject(), CDrivesFolder::CreateViewObject(), CFSFolder::CreateViewObject(), and CNetFolder::GetUIObjectOf().

AddFSClassKeysToArray()

void AddFSClassKeysToArray	(	PCUITEMID_CHILD	pidl,
		HKEY *	array,
		UINT *	cKeys
	)

Definition at line 282 of file shlfolder.cpp.

{
    if (_ILIsValue(pidl))
    {
        FileStructW* pFileData = _ILGetFileStructW(pidl);
        LPWSTR extension = PathFindExtension(pFileData->wszName);
 
        if (extension)
        {
            AddClassKeyToArray(extension, array, cKeys);
 
            WCHAR wszClass[MAX_PATH], wszClass2[MAX_PATH];
            DWORD dwSize = sizeof(wszClass);
            if (RegGetValueW(HKEY_CLASSES_ROOT, extension, NULL, RRF_RT_REG_SZ, NULL, wszClass, &dwSize) == ERROR_SUCCESS)
            {
                swprintf(wszClass2, L"%s//%s", extension, wszClass);
 
                AddClassKeyToArray(wszClass, array, cKeys);
                AddClassKeyToArray(wszClass2, array, cKeys);
            }
 
            swprintf(wszClass2, L"SystemFileAssociations//%s", extension);
            AddClassKeyToArray(wszClass2, array, cKeys);
 
            if (RegGetValueW(HKEY_CLASSES_ROOT, extension, L"PerceivedType ", RRF_RT_REG_SZ, NULL, wszClass, &dwSize) == ERROR_SUCCESS)
            {
                swprintf(wszClass2, L"SystemFileAssociations//%s", wszClass);
                AddClassKeyToArray(wszClass2, array, cKeys);
            }
        }
 
        AddClassKeyToArray(L"AllFilesystemObjects", array, cKeys);
        AddClassKeyToArray(L"*", array, cKeys);
    }
    else if (_ILIsFolder(pidl))
    {
        AddClassKeyToArray(L"AllFilesystemObjects", array, cKeys);
        AddClassKeyToArray(L"Directory", array, cKeys);
        AddClassKeyToArray(L"Folder", array, cKeys);
    }
    else
    {
        ERR("Got non FS pidl\n");
    }
}

Referenced by CDesktopFolder::GetUIObjectOf(), and CFSFolder::GetUIObjectOf().

CDefViewBckgrndMenu_CreateInstance()

HRESULT CDefViewBckgrndMenu_CreateInstance	(	IShellFolder *	psf,
		REFIID	riid,
		void **	ppv
	)

Definition at line 334 of file CDefViewBckgrndMenu.cpp.

{
    return ShellObjectCreatorInit<CDefViewBckgrndMenu>(psf, riid, ppv);
}

Referenced by CDefView::GetItemObject().

GetNextElementW()

LPCWSTR GetNextElementW	(	LPCWSTR	pszNext,
		LPWSTR	pszOut,
		DWORD	dwOut
	)

Definition at line 44 of file shlfolder.cpp.

{
    LPCWSTR pszTail = pszNext;
    DWORD dwCopy;
 
    TRACE ("(%s %p 0x%08x)\n", debugstr_w (pszNext), pszOut, dwOut);
 
    *pszOut = 0x0000;
 
    if (!pszNext || !*pszNext)
        return NULL;
 
    while (*pszTail && (*pszTail != (WCHAR) '\\'))
        pszTail++;
 
    dwCopy = pszTail - pszNext + 1;
    lstrcpynW (pszOut, pszNext, (dwOut < dwCopy) ? dwOut : dwCopy);
 
    if (*pszTail)
        pszTail++;
    else
        pszTail = NULL;
 
    TRACE ("--(%s %s 0x%08x %p)\n", debugstr_w (pszNext), debugstr_w (pszOut), dwOut, pszTail);
    return pszTail;
}

Referenced by CFSFolder::ParseDisplayName().

HCR_RegOpenClassIDKey()

BOOL HCR_RegOpenClassIDKey	(	REFIID	riid,
		HKEY *	hkey
	)

Definition at line 227 of file classes.c.

{
    char    xriid[50];
    sprintf( xriid, "CLSID\\{%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x}",
                 riid->Data1, riid->Data2, riid->Data3,
                 riid->Data4[0], riid->Data4[1], riid->Data4[2], riid->Data4[3],
                 riid->Data4[4], riid->Data4[5], riid->Data4[6], riid->Data4[7] );
 
    TRACE("%s\n",xriid );
 
    return !RegOpenKeyExA(HKEY_CLASSES_ROOT, xriid, 0, KEY_READ, hkey);
}

Referenced by CRegFolder::GetDetailsOf(), CRegFolder::GetDisplayNameOf(), HCR_GetClassNameA(), and HCR_GetClassNameW().

SH_GetApidlFromDataObject()

HRESULT SH_GetApidlFromDataObject	(	IDataObject *	pDataObject,
		PIDLIST_ABSOLUTE *	ppidlfolder,
		PUITEMID_CHILD **	apidlItems,
		UINT *	pcidl
	)

Definition at line 328 of file shlfolder.cpp.

{
    CDataObjectHIDA cida(pDataObject);
 
    if (FAILED_UNEXPECTEDLY(cida.hr()))
        return cida.hr();
 
    /* convert the data into pidl */
    LPITEMIDLIST pidl;
    LPITEMIDLIST *apidl = _ILCopyCidaToaPidl(&pidl, cida);
    if (!apidl)
    {
        return E_OUTOFMEMORY;
    }
 
    *ppidlfolder = pidl;
    *apidlItems = apidl;
    *pcidl = cida->cidl;
 
    return S_OK;
}

Referenced by CFSDropTarget::_RepositionItems(), DrivesContextMenuCallback(), and RegFolderContextMenuCallback().

SHELL32_BindToSF()

HRESULT SHELL32_BindToSF	(	LPCITEMIDLIST	pidlRoot,
		PERSIST_FOLDER_TARGET_INFO *	ppfti,
		LPCITEMIDLIST	pidl,
		const GUID *	clsid,
		REFIID	riid,
		LPVOID *	ppvOut
	)

Definition at line 160 of file shlfolder.cpp.

{
    PITEMID_CHILD pidlChild = ILCloneFirst (pidl);
    if (!pidlChild)
        return E_FAIL;
 
    CComPtr<IShellFolder> psf;
    HRESULT hr = SHELL32_CoCreateInitSF(pidlRoot,
                                        ppfti,
                                        pidlChild,
                                        clsid,
                                        IID_PPV_ARG(IShellFolder, &psf));
    ILFree(pidlChild);
 
    if (FAILED_UNEXPECTEDLY(hr))
        return hr;
 
    if (_ILIsPidlSimple (pidl))
        return psf->QueryInterface(riid, ppvOut);
    else
        return psf->BindToObject(ILGetNext (pidl), NULL, riid, ppvOut);
}

Referenced by CDrivesFolder::BindToObject(), CFSFolder::BindToObject(), CNetFolder::BindToObject(), and CRegFolder::BindToObject().

SHELL32_CompareChildren()

HRESULT SHELL32_CompareChildren	(	IShellFolder2 *	psf,
		LPARAM	lParam,
		LPCITEMIDLIST	pidl1,
		LPCITEMIDLIST	pidl2
	)

Definition at line 216 of file shlfolder.cpp.

{
    PUIDLIST_RELATIVE nextpidl1 = ILGetNext (pidl1);
    PUIDLIST_RELATIVE nextpidl2 = ILGetNext (pidl2);
 
    bool isEmpty1 = _ILIsDesktop(nextpidl1);
    bool isEmpty2 = _ILIsDesktop(nextpidl2);
    if (isEmpty1 || isEmpty2)
        return MAKE_COMPARE_HRESULT(isEmpty2 - isEmpty1);
 
    PITEMID_CHILD firstpidl = ILCloneFirst (pidl1);
    if (!firstpidl)
        return E_OUTOFMEMORY;
 
    CComPtr<IShellFolder> psf2;
    HRESULT hr = psf->BindToObject(firstpidl, 0, IID_PPV_ARG(IShellFolder, &psf2));
    ILFree(firstpidl);
    if (FAILED(hr))
        return MAKE_COMPARE_HRESULT(0);
 
    return psf2->CompareIDs(lParam, nextpidl1, nextpidl2);
}

Referenced by CDrivesFolder::CompareIDs(), CFSFolder::CompareIDs(), CRegFolder::CompareIDs(), and SHELL32_CompareDetails().

SHELL32_CompareDetails()

HRESULT SHELL32_CompareDetails	(	IShellFolder2 *	isf,
		LPARAM	lParam,
		LPCITEMIDLIST	pidl1,
		LPCITEMIDLIST	pidl2
	)

Definition at line 239 of file shlfolder.cpp.

{
    SHELLDETAILS sd;
    WCHAR wszItem1[MAX_PATH], wszItem2[MAX_PATH];
    HRESULT hres;
 
    hres = isf->GetDetailsOf(pidl1, lParam, &sd);
    if (FAILED(hres))
        return MAKE_COMPARE_HRESULT(1);
 
    hres = StrRetToBufW(&sd.str, pidl1, wszItem1, MAX_PATH);
    if (FAILED(hres))
        return MAKE_COMPARE_HRESULT(1);
 
    hres = isf->GetDetailsOf(pidl2, lParam, &sd);
    if (FAILED(hres))
        return MAKE_COMPARE_HRESULT(1);
 
    hres = StrRetToBufW(&sd.str, pidl2, wszItem2, MAX_PATH);
    if (FAILED(hres))
        return MAKE_COMPARE_HRESULT(1);
 
    int ret = wcsicmp(wszItem1, wszItem2);
    if (ret == 0)
        return SHELL32_CompareChildren(isf, lParam, pidl1, pidl2);
 
    return MAKE_COMPARE_HRESULT(ret);
}

Referenced by CControlPanelFolder::CompareIDs(), CDrivesFolder::CompareIDs(), CFSFolder::CompareIDs(), CPrinterFolder::CompareIDs(), and CRegFolder::CompareIDs().

SHELL32_CreatePidlFromBindCtx()

LPITEMIDLIST SHELL32_CreatePidlFromBindCtx	(	IBindCtx *	pbc,
		LPCWSTR	path
	)

Definition at line 546 of file CFSFolder.cpp.

{
    IFileSystemBindData *fsbd = NULL;
    LPITEMIDLIST pidl = NULL;
    IUnknown *param = NULL;
    WIN32_FIND_DATAW wfd;
    HRESULT r;
 
    TRACE("%p %s\n", pbc, debugstr_w(path));
 
    if (!pbc)
        return NULL;
 
    /* see if the caller bound File System Bind Data */
    r = pbc->GetObjectParam((LPOLESTR)STR_FILE_SYS_BIND_DATA, &param);
    if (FAILED(r))
        return NULL;
 
    r = param->QueryInterface(IID_PPV_ARG(IFileSystemBindData,&fsbd));
    if (SUCCEEDED(r))
    {
        r = fsbd->GetFindData(&wfd);
        if (SUCCEEDED(r))
        {
            lstrcpynW(&wfd.cFileName[0], path, MAX_PATH);
            pidl = _ILCreateFromFindDataW(&wfd);
        }
        fsbd->Release();
    }
 
    return pidl;
}

Referenced by CDesktopFolder::ParseDisplayName(), and CFSFolder::ParseDisplayName().

SHELL32_GetDisplayNameOfChild()

HRESULT SHELL32_GetDisplayNameOfChild	(	IShellFolder2 *	psf,
		LPCITEMIDLIST	pidl,
		DWORD	dwFlags,
		LPSTRRET	strRet
	)

Definition at line 198 of file shlfolder.cpp.

{
    LPITEMIDLIST pidlFirst = ILCloneFirst(pidl);
    if (!pidlFirst)
        return E_OUTOFMEMORY;
 
    CComPtr<IShellFolder> psfChild;
    HRESULT hr = psf->BindToObject(pidlFirst, NULL, IID_PPV_ARG(IShellFolder, &psfChild));
    if (SUCCEEDED (hr))
    {
        hr = psfChild->GetDisplayNameOf(ILGetNext (pidl), dwFlags, strRet);
    }
    ILFree (pidlFirst);
 
    return hr;
}

Referenced by CDesktopFolder::GetDisplayNameOf(), CDrivesFolder::GetDisplayNameOf(), CFSFolder::GetDisplayNameOf(), and CRegFolder::GetDisplayNameOf().

SHELL32_GetFSItemAttributes()

HRESULT SHELL32_GetFSItemAttributes	(	IShellFolder *	psf,
		LPCITEMIDLIST	pidl,
		LPDWORD	pdwAttributes
	)

Definition at line 599 of file CFSFolder.cpp.

{
    DWORD dwFileAttributes, dwShellAttributes;
 
    if (!_ILIsFolder(pidl) && !_ILIsValue(pidl))
    {
        ERR("Got wrong type of pidl!\n");
        *pdwAttributes &= SFGAO_CANLINK;
        return S_OK;
    }
 
    dwFileAttributes = _ILGetFileAttributes(pidl, NULL, 0);
 
    /* Set common attributes */
    dwShellAttributes = SFGAO_CANCOPY | SFGAO_CANMOVE | SFGAO_CANLINK | SFGAO_CANRENAME | SFGAO_CANDELETE |
                        SFGAO_HASPROPSHEET | SFGAO_DROPTARGET | SFGAO_FILESYSTEM;
 
    BOOL bDirectory = (dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0;
 
    if (!bDirectory)
    {
        // https://git.reactos.org/?p=reactos.git;a=blob;f=dll/shellext/zipfldr/res/zipfldr.rgs;hb=032b5aacd233cd7b83ab6282aad638c161fdc400#l9
        WCHAR szFileName[MAX_PATH];
        LPWSTR pExtension;
 
        if (_ILSimpleGetTextW(pidl, szFileName, _countof(szFileName)) && (pExtension = PathFindExtensionW(szFileName)))
        {
            CLSID clsidFile;
            // FIXME: Cache this?
            HRESULT hr = GetCLSIDForFileTypeFromExtension(pExtension, L"CLSID", &clsidFile);
            if (hr == S_OK)
            {
                HKEY hkey;
                hr = SHRegGetCLSIDKeyW(clsidFile, L"ShellFolder", FALSE, FALSE, &hkey);
                if (SUCCEEDED(hr))
                {
                    DWORD dwAttributes = 0;
                    DWORD dwSize = sizeof(dwAttributes);
                    LSTATUS Status;
 
                    Status = SHRegGetValueW(hkey, NULL, L"Attributes", RRF_RT_REG_DWORD, NULL, &dwAttributes, &dwSize);
                    if (Status == STATUS_SUCCESS)
                    {
                        TRACE("Augmenting '%S' with dwAttributes=0x%x\n", szFileName, dwAttributes);
                        dwShellAttributes |= dwAttributes;
                    }
                    ::RegCloseKey(hkey);
 
                    // This should be presented as directory!
                    bDirectory = TRUE;
                    TRACE("Treating '%S' as directory!\n", szFileName);
                }
            }
        }
    }
 
    // This is a directory
    if (bDirectory)
    {
        dwShellAttributes |= (SFGAO_FOLDER | /*SFGAO_HASSUBFOLDER |*/ SFGAO_STORAGE);
 
        // Is this a real directory?
        if (dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
        {
            dwShellAttributes |= (SFGAO_FILESYSANCESTOR | SFGAO_STORAGEANCESTOR);
        }
    }
    else
    {
        dwShellAttributes |= SFGAO_STREAM;
    }
 
    if (dwFileAttributes & FILE_ATTRIBUTE_HIDDEN)
        dwShellAttributes |=  SFGAO_HIDDEN;
 
    if (dwFileAttributes & FILE_ATTRIBUTE_READONLY)
        dwShellAttributes |=  SFGAO_READONLY;
 
    if (SFGAO_LINK & *pdwAttributes)
    {
        char ext[MAX_PATH];
 
        if (_ILGetExtension(pidl, ext, MAX_PATH) && !lstrcmpiA(ext, "lnk"))
            dwShellAttributes |= SFGAO_LINK;
    }
 
    if (SFGAO_HASSUBFOLDER & *pdwAttributes)
    {
        CComPtr<IShellFolder> psf2;
        if (SUCCEEDED(psf->BindToObject(pidl, 0, IID_PPV_ARG(IShellFolder, &psf2))))
        {
            CComPtr<IEnumIDList> pEnumIL;
            if (SUCCEEDED(psf2->EnumObjects(0, SHCONTF_FOLDERS, &pEnumIL)))
            {
                if (pEnumIL->Skip(1) == S_OK)
                    dwShellAttributes |= SFGAO_HASSUBFOLDER;
            }
        }
    }
 
    *pdwAttributes = dwShellAttributes;
 
    TRACE ("-- 0x%08x\n", *pdwAttributes);
    return S_OK;
}

Referenced by CFSFolder::GetAttributesOf(), and CFSFolder::ParseDisplayName().

SHELL32_GUIDToStringA()

static __inline int SHELL32_GUIDToStringA ( REFGUID  guid, LPSTR  str  )

static

Definition at line 73 of file shfldr.h.

{
    return sprintf(str, "{%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x}",
            guid.Data1, guid.Data2, guid.Data3,
            guid.Data4[0], guid.Data4[1], guid.Data4[2], guid.Data4[3],
            guid.Data4[4], guid.Data4[5], guid.Data4[6], guid.Data4[7]);
}

SHELL32_GUIDToStringW()

static __inline int SHELL32_GUIDToStringW ( REFGUID  guid, LPWSTR  str  )

static

Definition at line 81 of file shfldr.h.

{
    static const WCHAR fmtW[] =
     { '{','%','0','8','l','x','-','%','0','4','x','-','%','0','4','x','-',
     '%','0','2','x','%','0','2','x','-',
     '%','0','2','x','%','0','2','x','%','0','2','x','%','0','2','x',
     '%','0','2','x','%','0','2','x','}',0 };
    return swprintf(str, fmtW,
            guid.Data1, guid.Data2, guid.Data3,
            guid.Data4[0], guid.Data4[1], guid.Data4[2], guid.Data4[3],
            guid.Data4[4], guid.Data4[5], guid.Data4[6], guid.Data4[7]);
}

Referenced by CRegFolder::GetDisplayNameOf(), and IsNamespaceExtensionHidden().

SHELL32_ParseNextElement()

HRESULT SHELL32_ParseNextElement	(	IShellFolder2 *	psf,
		HWND	hwndOwner,
		LPBC	pbc,
		LPITEMIDLIST *	pidlInOut,
		LPOLESTR	szNext,
		DWORD *	pEaten,
		DWORD *	pdwAttributes
	)

Definition at line 71 of file shlfolder.cpp.

{
    HRESULT hr = E_INVALIDARG;
    LPITEMIDLIST pidlIn = pidlInOut ? *pidlInOut : NULL;
    LPITEMIDLIST pidlOut = NULL;
    LPITEMIDLIST pidlTemp = NULL;
    CComPtr<IShellFolder> psfChild;
 
    TRACE ("(%p, %p, %p, %s)\n", psf, pbc, pidlIn, debugstr_w (szNext));
 
    /* get the shellfolder for the child pidl and let it analyse further */
    hr = psf->BindToObject(pidlIn, pbc, IID_PPV_ARG(IShellFolder, &psfChild));
    if (FAILED(hr))
        return hr;
 
    hr = psfChild->ParseDisplayName(hwndOwner, pbc, szNext, pEaten, &pidlOut, pdwAttributes);
    if (FAILED(hr))
        return hr;
 
    pidlTemp = ILCombine (pidlIn, pidlOut);
    if (!pidlTemp)
    {
        hr = E_OUTOFMEMORY;
        if (pidlOut)
            ILFree(pidlOut);
        return hr;
    }
 
    if (pidlOut)
        ILFree (pidlOut);
 
    if (pidlIn)
        ILFree (pidlIn);
 
    *pidlInOut = pidlTemp;
 
    TRACE ("-- pidl=%p ret=0x%08x\n", pidlInOut ? *pidlInOut : NULL, hr);
    return S_OK;
}

Referenced by CDesktopFolder::ParseDisplayName(), CDrivesFolder::ParseDisplayName(), CFSFolder::ParseDisplayName(), and CRegFolder::ParseDisplayName().

SHELL_FS_HideExtension()

BOOL SHELL_FS_HideExtension

(

LPCWSTR

pwszPath

)

Definition at line 1272 of file CFSFolder.cpp.

{
    HKEY hKey;
    DWORD dwData, dwDataSize = sizeof(DWORD);
    BOOL doHide = FALSE; /* The default value is FALSE (win98 at least) */
    LONG lError;
 
    lError = RegCreateKeyExW(HKEY_CURRENT_USER, L"SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Explorer\\Advanced",
                             0, NULL, 0, KEY_ALL_ACCESS, NULL,
                             &hKey, NULL);
    if (lError == ERROR_SUCCESS)
    {
        lError = RegQueryValueExW(hKey, L"HideFileExt", NULL, NULL, (LPBYTE)&dwData, &dwDataSize);
        if (lError == ERROR_SUCCESS)
            doHide = dwData;
        RegCloseKey(hKey);
    }
 
    if (!doHide)
    {
        LPCWSTR DotExt = PathFindExtensionW(szPath);
        if (*DotExt != 0)
        {
            WCHAR classname[MAX_PATH];
            LONG classlen = sizeof(classname);
            lError = RegQueryValueW(HKEY_CLASSES_ROOT, DotExt, classname, &classlen);
            if (lError == ERROR_SUCCESS)
            {
                lError = RegOpenKeyW(HKEY_CLASSES_ROOT, classname, &hKey);
                if (lError == ERROR_SUCCESS)
                {
                    lError = RegQueryValueExW(hKey, L"NeverShowExt", NULL, NULL, NULL, NULL);
                    if (lError == ERROR_SUCCESS)
                        doHide = TRUE;
 
                    RegCloseKey(hKey);
                }
            }
        }
    }
 
    return doHide;
}

Referenced by CDefView::OnNotify(), CFSFolder::SetNameOf(), and SHELL_FS_ProcessDisplayFilename().

SHELL_FS_ProcessDisplayFilename()

void SHELL_FS_ProcessDisplayFilename	(	LPWSTR	szPath,
		DWORD	dwFlags
	)

Definition at line 1316 of file CFSFolder.cpp.

{
    /*FIXME: MSDN also mentions SHGDN_FOREDITING which is not yet handled. */
    if (!(dwFlags & SHGDN_FORPARSING) &&
        ((dwFlags & SHGDN_INFOLDER) || (dwFlags == SHGDN_NORMAL))) {
            if (SHELL_FS_HideExtension(szPath) && szPath[0] != '.')
                PathRemoveExtensionW(szPath);
    }
}

Referenced by CFSFolder::GetDisplayNameOf().