Sweden-Number/dlls/shlwapi/assoc.c

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/*
* IQueryAssociations object and helper functions
*
* Copyright 2002 Jon Griffiths
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <stdarg.h>
#include "windef.h"
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#include "winbase.h"
#include "winnls.h"
#include "winreg.h"
#include "objbase.h"
#include "shlguid.h"
#include "shlwapi.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(shell);
/**************************************************************************
* IQueryAssociations {SHLWAPI}
*
* DESCRIPTION
* This object provides a layer of abstraction over the system registry in
* order to simplify the process of parsing associations between files.
* Associations in this context means the registry entries that link (for
* example) the extension of a file with its description, list of
* applications to open the file with, and actions that can be performed on it
* (the shell displays such information in the context menu of explorer
* when you right-click on a file).
*
* HELPERS
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* You can use this object transparently by calling the helper functions
* AssocQueryKeyA(), AssocQueryStringA() and AssocQueryStringByKeyA(). These
* create an IQueryAssociations object, perform the requested actions
* and then dispose of the object. Alternatively, you can create an instance
* of the object using AssocCreate() and call the following methods on it:
*
* METHODS
*/
/* Default IQueryAssociations::Init() flags */
#define SHLWAPI_DEF_ASSOCF (ASSOCF_INIT_BYEXENAME|ASSOCF_INIT_DEFAULTTOSTAR| \
ASSOCF_INIT_DEFAULTTOFOLDER)
typedef struct
{
const IQueryAssociationsVtbl *lpVtbl;
LONG ref;
HKEY hkeySource;
HKEY hkeyProgID;
} IQueryAssociationsImpl;
static const IQueryAssociationsVtbl IQueryAssociations_vtbl;
/**************************************************************************
* IQueryAssociations_Constructor [internal]
*
* Construct a new IQueryAssociations object.
*/
static IQueryAssociations* IQueryAssociations_Constructor(void)
{
IQueryAssociationsImpl* iface;
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iface = HeapAlloc(GetProcessHeap(),0,sizeof(IQueryAssociationsImpl));
iface->lpVtbl = &IQueryAssociations_vtbl;
iface->ref = 1;
iface->hkeySource = NULL;
iface->hkeyProgID = NULL;
TRACE("Returning IQueryAssociations* %p\n", iface);
return (IQueryAssociations*)iface;
}
/*************************************************************************
* SHLWAPI_ParamAToW
*
* Internal helper function: Convert ASCII parameter to Unicode.
*/
static BOOL SHLWAPI_ParamAToW(LPCSTR lpszParam, LPWSTR lpszBuff, DWORD dwLen,
LPWSTR* lpszOut)
{
if (lpszParam)
{
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DWORD dwStrLen = MultiByteToWideChar(CP_ACP, 0, lpszParam, -1, NULL, 0);
if (dwStrLen < dwLen)
{
*lpszOut = lpszBuff; /* Use Buffer, it is big enough */
}
else
{
/* Create a new buffer big enough for the string */
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*lpszOut = HeapAlloc(GetProcessHeap(), 0,
dwStrLen * sizeof(WCHAR));
if (!*lpszOut)
return FALSE;
}
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MultiByteToWideChar(CP_ACP, 0, lpszParam, -1, *lpszOut, dwStrLen);
}
else
*lpszOut = NULL;
return TRUE;
}
/*************************************************************************
* AssocCreate [SHLWAPI.@]
*
* Create a new IQueryAssociations object.
*
* PARAMS
* clsid [I] CLSID of object
* refiid [I] REFIID of interface
* lpInterface [O] Destination for the created IQueryAssociations object
*
* RETURNS
* Success: S_OK. lpInterface contains the new object.
* Failure: An HRESULT error code indicating the error.
*
* NOTES
* refiid must be equal to IID_IQueryAssociations, or this function will fail.
*/
HRESULT WINAPI AssocCreate(CLSID clsid, REFIID refiid, void **lpInterface)
{
HRESULT hRet;
IQueryAssociations* lpAssoc;
TRACE("(%s,%s,%p)\n", debugstr_guid(&clsid), debugstr_guid(refiid),
lpInterface);
if (!lpInterface)
return E_INVALIDARG;
*(DWORD*)lpInterface = 0;
if (!IsEqualGUID(&clsid, &IID_IQueryAssociations))
return E_NOTIMPL;
lpAssoc = IQueryAssociations_Constructor();
if (!lpAssoc)
return E_OUTOFMEMORY;
hRet = IQueryAssociations_QueryInterface(lpAssoc, refiid, lpInterface);
IQueryAssociations_Release(lpAssoc);
return hRet;
}
/*************************************************************************
* AssocQueryKeyW [SHLWAPI.@]
*
* See AssocQueryKeyA.
*/
HRESULT WINAPI AssocQueryKeyW(ASSOCF cfFlags, ASSOCKEY assockey, LPCWSTR pszAssoc,
LPCWSTR pszExtra, HKEY *phkeyOut)
{
HRESULT hRet;
IQueryAssociations* lpAssoc;
TRACE("(0x%8x,0x%8x,%s,%s,%p)\n", cfFlags, assockey, debugstr_w(pszAssoc),
debugstr_w(pszExtra), phkeyOut);
lpAssoc = IQueryAssociations_Constructor();
if (!lpAssoc)
return E_OUTOFMEMORY;
cfFlags &= SHLWAPI_DEF_ASSOCF;
hRet = IQueryAssociations_Init(lpAssoc, cfFlags, pszAssoc, NULL, NULL);
if (SUCCEEDED(hRet))
hRet = IQueryAssociations_GetKey(lpAssoc, cfFlags, assockey, pszExtra, phkeyOut);
IQueryAssociations_Release(lpAssoc);
return hRet;
}
/*************************************************************************
* AssocQueryKeyA [SHLWAPI.@]
*
* Get a file association key from the registry.
*
* PARAMS
* cfFlags [I] ASSOCF_ flags from "shlwapi.h"
* assockey [I] Type of key to get
* pszAssoc [I] Key name to search below
* pszExtra [I] Extra information about the key location
* phkeyOut [O] Destination for the association key
*
* RETURNS
* Success: S_OK. phkeyOut contains the key.
* Failure: An HRESULT error code indicating the error.
*/
HRESULT WINAPI AssocQueryKeyA(ASSOCF cfFlags, ASSOCKEY assockey, LPCSTR pszAssoc,
LPCSTR pszExtra, HKEY *phkeyOut)
{
WCHAR szAssocW[MAX_PATH], *lpszAssocW = NULL;
WCHAR szExtraW[MAX_PATH], *lpszExtraW = NULL;
HRESULT hRet = E_OUTOFMEMORY;
TRACE("(0x%8x,0x%8x,%s,%s,%p)\n", cfFlags, assockey, debugstr_a(pszAssoc),
debugstr_a(pszExtra), phkeyOut);
if (SHLWAPI_ParamAToW(pszAssoc, szAssocW, MAX_PATH, &lpszAssocW) &&
SHLWAPI_ParamAToW(pszExtra, szExtraW, MAX_PATH, &lpszExtraW))
{
hRet = AssocQueryKeyW(cfFlags, assockey, lpszAssocW, lpszExtraW, phkeyOut);
}
if (lpszAssocW != szAssocW)
HeapFree(GetProcessHeap(), 0, lpszAssocW);
if (lpszExtraW != szExtraW)
HeapFree(GetProcessHeap(), 0, lpszExtraW);
return hRet;
}
/*************************************************************************
* AssocQueryStringW [SHLWAPI.@]
*
* See AssocQueryStringA.
*/
HRESULT WINAPI AssocQueryStringW(ASSOCF cfFlags, ASSOCSTR str, LPCWSTR pszAssoc,
LPCWSTR pszExtra, LPWSTR pszOut, DWORD *pcchOut)
{
HRESULT hRet;
IQueryAssociations* lpAssoc;
TRACE("(0x%8x,0x%8x,%s,%s,%p,%p)\n", cfFlags, str, debugstr_w(pszAssoc),
debugstr_w(pszExtra), pszOut, pcchOut);
if (!pcchOut)
return E_INVALIDARG;
lpAssoc = IQueryAssociations_Constructor();
if (!lpAssoc)
return E_OUTOFMEMORY;
hRet = IQueryAssociations_Init(lpAssoc, cfFlags & SHLWAPI_DEF_ASSOCF,
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pszAssoc, NULL, NULL);
if (SUCCEEDED(hRet))
hRet = IQueryAssociations_GetString(lpAssoc, cfFlags, str, pszExtra,
pszOut, pcchOut);
IQueryAssociations_Release(lpAssoc);
return hRet;
}
/*************************************************************************
* AssocQueryStringA [SHLWAPI.@]
*
* Get a file association string from the registry.
*
* PARAMS
* cfFlags [I] ASSOCF_ flags from "shlwapi.h"
* str [I] Type of string to get (ASSOCSTR enum from "shlwapi.h")
* pszAssoc [I] Key name to search below
* pszExtra [I] Extra information about the string location
* pszOut [O] Destination for the association string
* pcchOut [O] Length of pszOut
*
* RETURNS
* Success: S_OK. pszOut contains the string, pcchOut contains its length.
* Failure: An HRESULT error code indicating the error.
*/
HRESULT WINAPI AssocQueryStringA(ASSOCF cfFlags, ASSOCSTR str, LPCSTR pszAssoc,
LPCSTR pszExtra, LPSTR pszOut, DWORD *pcchOut)
{
WCHAR szAssocW[MAX_PATH], *lpszAssocW = NULL;
WCHAR szExtraW[MAX_PATH], *lpszExtraW = NULL;
HRESULT hRet = E_OUTOFMEMORY;
TRACE("(0x%8x,0x%8x,%s,%s,%p,%p)\n", cfFlags, str, debugstr_a(pszAssoc),
debugstr_a(pszExtra), pszOut, pcchOut);
if (!pcchOut)
hRet = E_INVALIDARG;
else if (SHLWAPI_ParamAToW(pszAssoc, szAssocW, MAX_PATH, &lpszAssocW) &&
SHLWAPI_ParamAToW(pszExtra, szExtraW, MAX_PATH, &lpszExtraW))
{
WCHAR szReturnW[MAX_PATH], *lpszReturnW = szReturnW;
DWORD dwLenOut = *pcchOut;
if (dwLenOut >= MAX_PATH)
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lpszReturnW = HeapAlloc(GetProcessHeap(), 0,
(dwLenOut + 1) * sizeof(WCHAR));
if (!lpszReturnW)
hRet = E_OUTOFMEMORY;
else
{
hRet = AssocQueryStringW(cfFlags, str, lpszAssocW, lpszExtraW,
lpszReturnW, &dwLenOut);
if (SUCCEEDED(hRet))
WideCharToMultiByte(CP_ACP,0,szReturnW,-1,pszOut,dwLenOut,0,0);
*pcchOut = dwLenOut;
if (lpszReturnW != szReturnW)
HeapFree(GetProcessHeap(), 0, lpszReturnW);
}
}
if (lpszAssocW != szAssocW)
HeapFree(GetProcessHeap(), 0, lpszAssocW);
if (lpszExtraW != szExtraW)
HeapFree(GetProcessHeap(), 0, lpszExtraW);
return hRet;
}
/*************************************************************************
* AssocQueryStringByKeyW [SHLWAPI.@]
*
* See AssocQueryStringByKeyA.
*/
HRESULT WINAPI AssocQueryStringByKeyW(ASSOCF cfFlags, ASSOCSTR str, HKEY hkAssoc,
LPCWSTR pszExtra, LPWSTR pszOut,
DWORD *pcchOut)
{
HRESULT hRet;
IQueryAssociations* lpAssoc;
TRACE("(0x%8x,0x%8x,%p,%s,%p,%p)\n", cfFlags, str, hkAssoc,
debugstr_w(pszExtra), pszOut, pcchOut);
lpAssoc = IQueryAssociations_Constructor();
if (!lpAssoc)
return E_OUTOFMEMORY;
cfFlags &= SHLWAPI_DEF_ASSOCF;
hRet = IQueryAssociations_Init(lpAssoc, cfFlags, 0, hkAssoc, NULL);
if (SUCCEEDED(hRet))
hRet = IQueryAssociations_GetString(lpAssoc, cfFlags, str, pszExtra,
pszOut, pcchOut);
IQueryAssociations_Release(lpAssoc);
return hRet;
}
/*************************************************************************
* AssocQueryStringByKeyA [SHLWAPI.@]
*
* Get a file association string from the registry, given a starting key.
*
* PARAMS
* cfFlags [I] ASSOCF_ flags from "shlwapi.h"
* str [I] Type of string to get
* hkAssoc [I] Key to search below
* pszExtra [I] Extra information about the string location
* pszOut [O] Destination for the association string
* pcchOut [O] Length of pszOut
*
* RETURNS
* Success: S_OK. pszOut contains the string, pcchOut contains its length.
* Failure: An HRESULT error code indicating the error.
*/
HRESULT WINAPI AssocQueryStringByKeyA(ASSOCF cfFlags, ASSOCSTR str, HKEY hkAssoc,
LPCSTR pszExtra, LPSTR pszOut,
DWORD *pcchOut)
{
WCHAR szExtraW[MAX_PATH], *lpszExtraW = szExtraW;
WCHAR szReturnW[MAX_PATH], *lpszReturnW = szReturnW;
HRESULT hRet = E_OUTOFMEMORY;
TRACE("(0x%8x,0x%8x,%p,%s,%p,%p)\n", cfFlags, str, hkAssoc,
debugstr_a(pszExtra), pszOut, pcchOut);
if (!pcchOut)
hRet = E_INVALIDARG;
else if (SHLWAPI_ParamAToW(pszExtra, szExtraW, MAX_PATH, &lpszExtraW))
{
DWORD dwLenOut = *pcchOut;
if (dwLenOut >= MAX_PATH)
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lpszReturnW = HeapAlloc(GetProcessHeap(), 0,
(dwLenOut + 1) * sizeof(WCHAR));
if (lpszReturnW)
{
hRet = AssocQueryStringByKeyW(cfFlags, str, hkAssoc, lpszExtraW,
lpszReturnW, &dwLenOut);
if (SUCCEEDED(hRet))
WideCharToMultiByte(CP_ACP,0,szReturnW,-1,pszOut,dwLenOut,0,0);
*pcchOut = dwLenOut;
if (lpszReturnW != szReturnW)
HeapFree(GetProcessHeap(), 0, lpszReturnW);
}
}
if (lpszExtraW != szExtraW)
HeapFree(GetProcessHeap(), 0, lpszExtraW);
return hRet;
}
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/**************************************************************************
* AssocIsDangerous (SHLWAPI.@)
*
* Determine if a file association is dangerous (potentially malware).
*
* PARAMS
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* lpszAssoc [I] Name of file or file extension to check.
*
* RETURNS
* TRUE, if lpszAssoc may potentially be malware (executable),
* FALSE, Otherwise.
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*/
BOOL WINAPI AssocIsDangerous(LPCWSTR lpszAssoc)
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{
FIXME("%s\n", debugstr_w(lpszAssoc));
return FALSE;
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}
/**************************************************************************
* IQueryAssociations_QueryInterface {SHLWAPI}
*
* See IUnknown_QueryInterface.
*/
static HRESULT WINAPI IQueryAssociations_fnQueryInterface(
IQueryAssociations* iface,
REFIID riid,
LPVOID *ppvObj)
{
IQueryAssociationsImpl *This = (IQueryAssociationsImpl *)iface;
TRACE("(%p,%s,%p)\n",This, debugstr_guid(riid), ppvObj);
*ppvObj = NULL;
if (IsEqualIID(riid, &IID_IUnknown) ||
IsEqualIID(riid, &IID_IQueryAssociations))
{
*ppvObj = (IQueryAssociations*)This;
IQueryAssociations_AddRef((IQueryAssociations*)*ppvObj);
TRACE("Returning IQueryAssociations (%p)\n", *ppvObj);
return S_OK;
}
TRACE("Returning E_NOINTERFACE\n");
return E_NOINTERFACE;
}
/**************************************************************************
* IQueryAssociations_AddRef {SHLWAPI}
*
* See IUnknown_AddRef.
*/
static ULONG WINAPI IQueryAssociations_fnAddRef(IQueryAssociations *iface)
{
IQueryAssociationsImpl *This = (IQueryAssociationsImpl *)iface;
ULONG refCount = InterlockedIncrement(&This->ref);
TRACE("(%p)->(ref before=%u)\n",This, refCount - 1);
return refCount;
}
/**************************************************************************
* IQueryAssociations_Release {SHLWAPI}
*
* See IUnknown_Release.
*/
static ULONG WINAPI IQueryAssociations_fnRelease(IQueryAssociations *iface)
{
IQueryAssociationsImpl *This = (IQueryAssociationsImpl *)iface;
ULONG refCount = InterlockedDecrement(&This->ref);
TRACE("(%p)->(ref before=%u)\n",This, refCount + 1);
if (!refCount)
{
TRACE("Destroying IQueryAssociations (%p)\n", This);
HeapFree(GetProcessHeap(), 0, This);
}
return refCount;
}
/**************************************************************************
* IQueryAssociations_Init {SHLWAPI}
*
* Initialise an IQueryAssociations object.
*
* PARAMS
* iface [I] IQueryAssociations interface to initialise
* cfFlags [I] ASSOCF_ flags from "shlwapi.h"
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* pszAssoc [I] String for the root key name, or NULL if hkeyProgid is given
* hkeyProgid [I] Handle for the root key, or NULL if pszAssoc is given
* hWnd [I] Reserved, must be NULL.
*
* RETURNS
* Success: S_OK. iface is initialised with the parameters given.
* Failure: An HRESULT error code indicating the error.
*/
static HRESULT WINAPI IQueryAssociations_fnInit(
IQueryAssociations *iface,
ASSOCF cfFlags,
LPCWSTR pszAssoc,
HKEY hkeyProgid,
HWND hWnd)
{
static const WCHAR szProgID[] = {'P','r','o','g','I','D',0};
IQueryAssociationsImpl *This = (IQueryAssociationsImpl *)iface;
HRESULT hr;
TRACE("(%p)->(%d,%s,%p,%p)\n", iface,
cfFlags,
debugstr_w(pszAssoc),
hkeyProgid,
hWnd);
if (hWnd != NULL)
FIXME("hwnd != NULL not supported\n");
if (cfFlags != 0)
FIXME("unsupported flags: %x\n", cfFlags);
if (pszAssoc != NULL)
{
hr = RegOpenKeyExW(HKEY_CLASSES_ROOT,
pszAssoc,
0,
KEY_READ,
&This->hkeySource);
if (FAILED(hr))
return HRESULT_FROM_WIN32(ERROR_NO_ASSOCIATION);
/* if this is not a prog id */
if ((*pszAssoc == '.') || (*pszAssoc == '{'))
{
hr = RegOpenKeyExW(This->hkeySource,
szProgID,
0,
KEY_READ,
&This->hkeyProgID);
if (FAILED(hr))
FIXME("Don't know what to return\n");
}
else
This->hkeyProgID = This->hkeySource;
return S_OK;
}
else if (hkeyProgid != NULL)
{
This->hkeyProgID = hkeyProgid;
return S_OK;
}
else
return E_FAIL;
}
/**************************************************************************
* IQueryAssociations_GetString {SHLWAPI}
*
* Get a file association string from the registry.
*
* PARAMS
* iface [I] IQueryAssociations interface to query
* cfFlags [I] ASSOCF_ flags from "shlwapi.h"
* str [I] Type of string to get (ASSOCSTR enum from "shlwapi.h")
* pszExtra [I] Extra information about the string location
* pszOut [O] Destination for the association string
* pcchOut [I/O] Length of pszOut
*
* RETURNS
* Success: S_OK. pszOut contains the string, pcchOut contains its length.
* Failure: An HRESULT error code indicating the error.
*/
static HRESULT WINAPI IQueryAssociations_fnGetString(
IQueryAssociations *iface,
ASSOCF cfFlags,
ASSOCSTR str,
LPCWSTR pszExtra,
LPWSTR pszOut,
DWORD *pcchOut)
{
IQueryAssociationsImpl *This = (IQueryAssociationsImpl *)iface;
FIXME("(%p,0x%8x,0x%8x,%s,%p,%p)-stub!\n", This, cfFlags, str,
debugstr_w(pszExtra), pszOut, pcchOut);
return E_NOTIMPL;
}
/**************************************************************************
* IQueryAssociations_GetKey {SHLWAPI}
*
* Get a file association key from the registry.
*
* PARAMS
* iface [I] IQueryAssociations interface to query
* cfFlags [I] ASSOCF_ flags from "shlwapi.h"
* assockey [I] Type of key to get (ASSOCKEY enum from "shlwapi.h")
* pszExtra [I] Extra information about the key location
* phkeyOut [O] Destination for the association key
*
* RETURNS
* Success: S_OK. phkeyOut contains a handle to the key.
* Failure: An HRESULT error code indicating the error.
*/
static HRESULT WINAPI IQueryAssociations_fnGetKey(
IQueryAssociations *iface,
ASSOCF cfFlags,
ASSOCKEY assockey,
LPCWSTR pszExtra,
HKEY *phkeyOut)
{
IQueryAssociationsImpl *This = (IQueryAssociationsImpl *)iface;
FIXME("(%p,0x%8x,0x%8x,%s,%p)-stub!\n", This, cfFlags, assockey,
debugstr_w(pszExtra), phkeyOut);
return E_NOTIMPL;
}
/**************************************************************************
* IQueryAssociations_GetData {SHLWAPI}
*
* Get the data for a file association key from the registry.
*
* PARAMS
* iface [I] IQueryAssociations interface to query
* cfFlags [I] ASSOCF_ flags from "shlwapi.h"
* assocdata [I] Type of data to get (ASSOCDATA enum from "shlwapi.h")
* pszExtra [I] Extra information about the data location
* pvOut [O] Destination for the association key
* pcbOut [I/O] Size of pvOut
*
* RETURNS
* Success: S_OK. pszOut contains the data, pcbOut contains its length.
* Failure: An HRESULT error code indicating the error.
*/
static HRESULT WINAPI IQueryAssociations_fnGetData(
IQueryAssociations *iface,
ASSOCF cfFlags,
ASSOCDATA assocdata,
LPCWSTR pszExtra,
LPVOID pvOut,
DWORD *pcbOut)
{
IQueryAssociationsImpl *This = (IQueryAssociationsImpl *)iface;
FIXME("(%p,0x%8x,0x%8x,%s,%p,%p)-stub!\n", This, cfFlags, assocdata,
debugstr_w(pszExtra), pvOut, pcbOut);
return E_NOTIMPL;
}
/**************************************************************************
* IQueryAssociations_GetEnum {SHLWAPI}
*
* Not yet implemented in native Win32.
*
* PARAMS
* iface [I] IQueryAssociations interface to query
* cfFlags [I] ASSOCF_ flags from "shlwapi.h"
* assocenum [I] Type of enum to get (ASSOCENUM enum from "shlwapi.h")
* pszExtra [I] Extra information about the enum location
* riid [I] REFIID to look for
* ppvOut [O] Destination for the interface.
*
* RETURNS
* Success: S_OK.
* Failure: An HRESULT error code indicating the error.
*
* NOTES
* Presumably this function returns an enumerator object.
*/
static HRESULT WINAPI IQueryAssociations_fnGetEnum(
IQueryAssociations *iface,
ASSOCF cfFlags,
ASSOCENUM assocenum,
LPCWSTR pszExtra,
REFIID riid,
LPVOID *ppvOut)
{
IQueryAssociationsImpl *This = (IQueryAssociationsImpl *)iface;
FIXME("(%p,0x%8x,0x%8x,%s,%s,%p)-stub!\n", This, cfFlags, assocenum,
debugstr_w(pszExtra), debugstr_guid(riid), ppvOut);
return E_NOTIMPL;
}
static const IQueryAssociationsVtbl IQueryAssociations_vtbl =
{
IQueryAssociations_fnQueryInterface,
IQueryAssociations_fnAddRef,
IQueryAssociations_fnRelease,
IQueryAssociations_fnInit,
IQueryAssociations_fnGetString,
IQueryAssociations_fnGetKey,
IQueryAssociations_fnGetData,
IQueryAssociations_fnGetEnum
};