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wine/dlls/shell32/shellole.c
Juergen Schmied 23b808791e - changed STRRET definition 
- small changes for seperation of shell32 from ole32
- debughelper for printing interface names (shell internal)
- changed shell memory allocation to use IMalloc of ole32 when this
  library is already loaded
- fallback IMalloc internally in shell
- unified constructor syntax for several objects  created by DllGetClassObject
- rewrote instance creation for com objects
- made the desktop folder parsing paths like ::{CLSID}
- Implemented IPersistFolder3 partially
2002-07-02 02:05:17 +00:00

810 lines
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/*
* handling of SHELL32.DLL OLE-Objects
*
* Copyright 1997 Marcus Meissner
* Copyright 1998 Juergen Schmied <juergen.schmied@metronet.de>
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "config.h"
#include <stdlib.h>
#include <string.h>
#include "shellapi.h"
#include "shlobj.h"
#include "shlguid.h"
#include "winreg.h"
#include "winerror.h"
#include "undocshell.h"
#include "wine/unicode.h"
#include "shell32_main.h"
#include "wine/debug.h"
#include "shlwapi.h"
#include "winuser.h"
WINE_DEFAULT_DEBUG_CHANNEL(shell);
DWORD WINAPI SHCLSIDFromStringA (LPCSTR clsid, CLSID *id);
extern HRESULT WINAPI IFSFolder_Constructor(IUnknown * pUnkOuter, REFIID riid, LPVOID * ppv);
const WCHAR sShell32[12] = {'S','H','E','L','L','3','2','.','D','L','L','\0'};
const WCHAR sOLE32[10] = {'O','L','E','3','2','.','D','L','L','\0'};
HINSTANCE hShellOle32 = 0;
/**************************************************************************
* Default ClassFactory types
*/
typedef HRESULT (CALLBACK *LPFNCREATEINSTANCE)(IUnknown* pUnkOuter, REFIID riid, LPVOID* ppvObject);
IClassFactory * IDefClF_fnConstructor(LPFNCREATEINSTANCE lpfnCI, PLONG pcRefDll, REFIID riidInst);
/* this table contains all CLSID's of shell32 objects */
struct {
REFIID riid;
LPFNCREATEINSTANCE lpfnCI;
} InterfaceTable[4] = {
{&CLSID_ShellFSFolder, &IFSFolder_Constructor},
{&CLSID_ShellDesktop, &ISF_Desktop_Constructor},
{&CLSID_ShellLink, &IShellLink_Constructor},
{NULL,NULL}
};
/*************************************************************************
* __CoCreateInstance [internal]
*
* NOTES
* wraper for late bound call to OLE32.DLL
*
*/
HRESULT (WINAPI *pCoCreateInstance)(REFCLSID rclsid, LPUNKNOWN pUnkOuter, DWORD dwClsContext, REFIID iid, LPVOID *ppv) = NULL;
void * __GetExternalFunc(HMODULE * phModule, LPCWSTR szModuleName, LPCSTR szProcName)
{
if (!*phModule) *phModule = GetModuleHandleW(szModuleName);
if (!*phModule) *phModule = LoadLibraryW(szModuleName);
if (*phModule) return GetProcAddress(*phModule, szProcName);
return NULL;
}
HRESULT __CoCreateInstance(REFCLSID rclsid, LPUNKNOWN pUnkOuter, DWORD dwClsContext, REFIID iid, LPVOID *ppv)
{
if(!pCoCreateInstance) pCoCreateInstance = __GetExternalFunc(&hShellOle32, sOLE32, "CoCreateInstance");
if(!pCoCreateInstance) return E_FAIL;
return pCoCreateInstance(rclsid, pUnkOuter, dwClsContext, iid, ppv);
}
/*************************************************************************
* SHCoCreateInstance [SHELL32.102]
*
* NOTES
* exported by ordinal
*/
/* FIXME: this should be SHLWAPI.24 since we can't yet import by ordinal */
DWORD WINAPI __SHGUIDToStringW (REFGUID guid, LPWSTR str)
{
WCHAR sFormat[52] = {'{','%','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 wsprintfW ( str, sFormat,
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] );
}
LRESULT WINAPI SHCoCreateInstance(
LPCSTR aclsid,
REFCLSID clsid,
LPUNKNOWN pUnkOuter,
REFIID refiid,
LPVOID *ppv)
{
DWORD hres;
IID iid;
CLSID * myclsid = (CLSID*)clsid;
WCHAR sKeyName[MAX_PATH];
const WCHAR sCLSID[7] = {'C','L','S','I','D','\\','\0'};
WCHAR sClassID[60];
const WCHAR sInProcServer32[16] ={'\\','I','n','p','r','o','c','S','e','r','v','e','r','3','2','\0'};
const WCHAR sLoadWithoutCOM[15] ={'L','o','a','d','W','i','t','h','o','u','t','C','O','M','\0'};
WCHAR sDllPath[MAX_PATH];
HKEY hKey;
DWORD dwSize;
BOOLEAN bLoadFromShell32 = FALSE;
BOOLEAN bLoadWithoutCOM = FALSE;
IClassFactory * pcf = NULL;
/* if the clsid is a string, convert it */
if (!clsid)
{
if (!aclsid) return REGDB_E_CLASSNOTREG;
SHCLSIDFromStringA(aclsid, &iid);
myclsid = &iid;
}
TRACE("(%p,\n\tCLSID:\t%s, unk:%p\n\tIID:\t%s,%p)\n",
aclsid,debugstr_guid(myclsid),pUnkOuter,debugstr_guid(refiid),ppv);
/* we look up the dll path in the registry */
__SHGUIDToStringW(myclsid, sClassID);
lstrcpyW(sKeyName, sCLSID);
lstrcatW(sKeyName, sClassID);
lstrcatW(sKeyName, sInProcServer32);
if (ERROR_SUCCESS == RegOpenKeyExW(HKEY_CLASSES_ROOT, sKeyName, 0, KEY_READ, &hKey)) {
dwSize = sizeof(sDllPath);
SHQueryValueExW(hKey, NULL, 0,0, sDllPath, &dwSize );
/* if a special registry key is set we loading a shell extension without help of OLE32 */
bLoadWithoutCOM = (ERROR_SUCCESS == SHQueryValueExW(hKey, sLoadWithoutCOM, 0, 0, 0, 0));
/* if the com object is inside shell32 omit use of ole32 */
bLoadFromShell32 = (0==lstrcmpiW( PathFindFileNameW(sDllPath), sShell32));
RegCloseKey (hKey);
} else {
/* since we can't find it in the registry we try internally */
bLoadFromShell32 = TRUE;
}
TRACE("WithoutCom=%u FromShell=%u\n", bLoadWithoutCOM, bLoadFromShell32);
/* now we create a instance */
*ppv=NULL;
if (bLoadFromShell32) {
if (! SUCCEEDED(SHELL32_DllGetClassObject(myclsid, &IID_IClassFactory,(LPVOID*)&pcf))) {
ERR("LoadFromShell failed for CLSID=%s\n", debugstr_guid(myclsid));
}
} else if (bLoadWithoutCOM) {
/* load a external dll without ole32 */
HANDLE hLibrary;
typedef HRESULT (CALLBACK *DllGetClassObjectFunc)(REFCLSID clsid, REFIID iid, LPVOID *ppv);
DllGetClassObjectFunc DllGetClassObject;
if ((hLibrary = LoadLibraryExW(sDllPath, 0, LOAD_WITH_ALTERED_SEARCH_PATH)) == 0) {
ERR("couldn't load InprocServer32 dll %s\n", debugstr_w(sDllPath));
hres = E_ACCESSDENIED;
goto end;
} else if (!(DllGetClassObject = (DllGetClassObjectFunc)GetProcAddress(hLibrary, "DllGetClassObject"))) {
ERR("couldn't find function DllGetClassObject in %s\n", debugstr_w(sDllPath));
FreeLibrary( hLibrary );
hres = E_ACCESSDENIED;
goto end;
} else if (! SUCCEEDED(hres = DllGetClassObject(myclsid, &IID_IClassFactory, (LPVOID*)&pcf))) {
TRACE("GetClassObject failed 0x%08lx\n", hres);
goto end;
}
} else {
/* load a external dll in the usual way */
hres = __CoCreateInstance(myclsid, pUnkOuter, CLSCTX_INPROC_SERVER, refiid, ppv);
goto end;
}
/* here we should have a ClassFactory */
if (!pcf) return E_ACCESSDENIED;
hres = IClassFactory_CreateInstance(pcf, pUnkOuter, refiid, ppv);
IClassFactory_Release(pcf);
end:
if(hres!=S_OK)
{
ERR("failed (0x%08lx) to create \n\tCLSID:\t%s\n\tIID:\t%s\n",
hres, debugstr_guid(myclsid), debugstr_guid(refiid));
ERR("class not found in registry\n");
}
TRACE("-- instance: %p\n",*ppv);
return hres;
}
/*************************************************************************
* DllGetClassObject [SHELL32.128]
*/
HRESULT WINAPI SHELL32_DllGetClassObject(REFCLSID rclsid, REFIID iid, LPVOID *ppv)
{
HRESULT hres = E_OUTOFMEMORY;
IClassFactory * pcf = NULL;
int i;
TRACE("\n\tCLSID:\t%s,\n\tIID:\t%s\n",debugstr_guid(rclsid),debugstr_guid(iid));
if (!ppv) return E_INVALIDARG;
*ppv = NULL;
/* search our internal interface table */
for(i=0;InterfaceTable[i].riid;i++) {
if(IsEqualIID(InterfaceTable[i].riid, rclsid)) {
TRACE("index[%u]\n", i);
pcf = IDefClF_fnConstructor(InterfaceTable[i].lpfnCI, &shell32_ObjCount, NULL);
}
}
if (!pcf) {
FIXME("failed for CLSID=%s\n", debugstr_guid(rclsid));
return CLASS_E_CLASSNOTAVAILABLE;
}
hres = IClassFactory_QueryInterface(pcf, iid, ppv);
IClassFactory_Release(pcf);
TRACE("-- pointer to class factory: %p\n",*ppv);
return hres;
}
/*************************************************************************
* SHCLSIDFromString [SHELL32.147]
*
* NOTES
* exported by ordinal
*/
DWORD WINAPI SHCLSIDFromStringA (LPCSTR clsid, CLSID *id)
{
WCHAR buffer[40];
TRACE("(%p(%s) %p)\n", clsid, clsid, id);
if (!MultiByteToWideChar( CP_ACP, 0, clsid, -1, buffer, sizeof(buffer)/sizeof(WCHAR) ))
return CO_E_CLASSSTRING;
return CLSIDFromString( buffer, id );
}
DWORD WINAPI SHCLSIDFromStringW (LPWSTR clsid, CLSID *id)
{
TRACE("(%p(%s) %p)\n", clsid, debugstr_w(clsid), id);
return CLSIDFromString(clsid, id);
}
DWORD WINAPI SHCLSIDFromStringAW (LPVOID clsid, CLSID *id)
{
if (SHELL_OsIsUnicode())
return SHCLSIDFromStringW (clsid, id);
return SHCLSIDFromStringA (clsid, id);
}
/*************************************************************************
* Shell Memory Allocator
*/
/* set the vtable later */
extern ICOM_VTABLE(IMalloc) VT_Shell_IMalloc32;
/* this is the static object instance */
typedef struct {
ICOM_VFIELD(IMalloc);
DWORD dummy;
} _ShellMalloc;
_ShellMalloc Shell_Malloc = { &VT_Shell_IMalloc32,1};
/* this is the global allocator of shell32 */
IMalloc * ShellTaskAllocator = NULL;
/******************************************************************************
* IShellMalloc_QueryInterface [VTABLE]
*/
static HRESULT WINAPI IShellMalloc_fnQueryInterface(LPMALLOC iface, REFIID refiid, LPVOID *obj)
{
TRACE("(%s,%p)\n",debugstr_guid(refiid),obj);
if (IsEqualIID(refiid, &IID_IUnknown) || IsEqualIID(refiid, &IID_IMalloc)) {
*obj = (LPMALLOC) &Shell_Malloc;
return S_OK;
}
return E_NOINTERFACE;
}
/******************************************************************************
* IShellMalloc_AddRefRelease [VTABLE]
*/
static ULONG WINAPI IShellMalloc_fnAddRefRelease(LPMALLOC iface)
{
return 1;
}
/******************************************************************************
* IShellMalloc_Alloc [VTABLE]
*/
static LPVOID WINAPI IShellMalloc_fnAlloc(LPMALLOC iface, DWORD cb)
{
LPVOID addr;
addr = (LPVOID) LocalAlloc(GMEM_ZEROINIT, cb);
TRACE("(%p,%ld);\n",addr,cb);
return addr;
}
/******************************************************************************
* IShellMalloc_Realloc [VTABLE]
*/
static LPVOID WINAPI IShellMalloc_fnRealloc(LPMALLOC iface, LPVOID pv, DWORD cb)
{
LPVOID addr;
if (pv) {
if (cb) {
addr = (LPVOID) LocalReAlloc((HANDLE) pv, cb, GMEM_ZEROINIT | GMEM_MOVEABLE);
} else {
LocalFree((HANDLE) pv);
addr = NULL;
}
} else {
if (cb) {
addr = (LPVOID) LocalAlloc(GMEM_ZEROINIT, cb);
} else {
addr = NULL;
}
}
TRACE("(%p->%p,%ld)\n",pv,addr,cb);
return addr;
}
/******************************************************************************
* IShellMalloc_Free [VTABLE]
*/
static VOID WINAPI IShellMalloc_fnFree(LPMALLOC iface, LPVOID pv)
{
TRACE("(%p)\n",pv);
LocalFree((HANDLE) pv);
}
/******************************************************************************
* IShellMalloc_GetSize [VTABLE]
*/
static DWORD WINAPI IShellMalloc_fnGetSize(LPMALLOC iface, LPVOID pv)
{
DWORD cb = (DWORD) LocalSize((HANDLE)pv);
TRACE("(%p,%ld)\n", pv, cb);
return cb;
}
/******************************************************************************
* IShellMalloc_DidAlloc [VTABLE]
*/
static INT WINAPI IShellMalloc_fnDidAlloc(LPMALLOC iface, LPVOID pv)
{
TRACE("(%p)\n",pv);
return -1;
}
/******************************************************************************
* IShellMalloc_HeapMinimize [VTABLE]
*/
static VOID WINAPI IShellMalloc_fnHeapMinimize(LPMALLOC iface)
{
TRACE("()\n");
}
static ICOM_VTABLE(IMalloc) VT_Shell_IMalloc32 =
{
ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
IShellMalloc_fnQueryInterface,
IShellMalloc_fnAddRefRelease,
IShellMalloc_fnAddRefRelease,
IShellMalloc_fnAlloc,
IShellMalloc_fnRealloc,
IShellMalloc_fnFree,
IShellMalloc_fnGetSize,
IShellMalloc_fnDidAlloc,
IShellMalloc_fnHeapMinimize
};
/*************************************************************************
* SHGetMalloc [SHELL32.@]
* returns the interface to shell malloc.
*
* NOTES
* uses OLE32.CoGetMalloc if OLE32.DLL is already loaded.
* if not it uses a internal implementations as fallback.
*/
DWORD WINAPI SHGetMalloc(LPMALLOC *lpmal)
{
HRESULT (WINAPI *pCoGetMalloc)(DWORD,LPMALLOC *);
HMODULE hOle32;
TRACE("(%p)\n", lpmal);
if (!ShellTaskAllocator)
{
hOle32 = GetModuleHandleA("OLE32.DLL");
if(hOle32) {
pCoGetMalloc = (void*) GetProcAddress(hOle32, "CoGetMalloc");
if (pCoGetMalloc) pCoGetMalloc(MEMCTX_TASK, &ShellTaskAllocator);
TRACE("got ole32 IMalloc\n");
}
if(!ShellTaskAllocator) {
ShellTaskAllocator = (IMalloc* ) &Shell_Malloc;
TRACE("use fallback allocator\n");
}
}
*lpmal = ShellTaskAllocator;
return S_OK;
}
/*************************************************************************
* SHAlloc [SHELL32.196]
*
* NOTES
* exported by ordinal
*/
LPVOID WINAPI SHAlloc(DWORD len)
{
IMalloc * ppv;
LPBYTE ret;
if (!ShellTaskAllocator) SHGetMalloc(&ppv);
ret = (LPVOID) IMalloc_Alloc(ShellTaskAllocator, len);
if(ret) ZeroMemory(ret, len); /*FIXME*/
TRACE("%lu bytes at %p\n",len, ret);
return (LPVOID)ret;
}
/*************************************************************************
* SHFree [SHELL32.195]
*
* NOTES
* exported by ordinal
*/
void WINAPI SHFree(LPVOID pv)
{
IMalloc * ppv;
TRACE("%p\n",pv);
if (!ShellTaskAllocator) SHGetMalloc(&ppv);
IMalloc_Free(ShellTaskAllocator, pv);
}
/*************************************************************************
* SHGetDesktopFolder [SHELL32.@]
*/
DWORD WINAPI SHGetDesktopFolder(IShellFolder **psf)
{
HRESULT hres = S_OK;
TRACE("%p->(%p)\n",psf,*psf);
if(!psf) return E_INVALIDARG;
*psf = NULL;
hres = ISF_Desktop_Constructor(NULL, &IID_IShellFolder,(LPVOID*)psf);
TRACE("-- %p->(%p)\n",psf, *psf);
return hres;
}
/**************************************************************************
* Default ClassFactory Implementation
*
* SHCreateDefClassObject
*
* NOTES
* helper function for dll's without a own classfactory
* a generic classfactory is returned
* when the CreateInstance of the cf is called the callback is executed
*/
typedef struct
{
ICOM_VFIELD(IClassFactory);
DWORD ref;
CLSID *rclsid;
LPFNCREATEINSTANCE lpfnCI;
const IID * riidInst;
ULONG * pcRefDll; /* pointer to refcounter in external dll (ugrrr...) */
} IDefClFImpl;
static ICOM_VTABLE(IClassFactory) dclfvt;
/**************************************************************************
* IDefClF_fnConstructor
*/
IClassFactory * IDefClF_fnConstructor(LPFNCREATEINSTANCE lpfnCI, PLONG pcRefDll, REFIID riidInst)
{
IDefClFImpl* lpclf;
lpclf = (IDefClFImpl*)HeapAlloc(GetProcessHeap(),0,sizeof(IDefClFImpl));
lpclf->ref = 1;
ICOM_VTBL(lpclf) = &dclfvt;
lpclf->lpfnCI = lpfnCI;
lpclf->pcRefDll = pcRefDll;
if (pcRefDll) InterlockedIncrement(pcRefDll);
lpclf->riidInst = riidInst;
TRACE("(%p)\n\tIID:\t%s\n",lpclf, debugstr_guid(riidInst));
return (LPCLASSFACTORY)lpclf;
}
/**************************************************************************
* IDefClF_fnQueryInterface
*/
static HRESULT WINAPI IDefClF_fnQueryInterface(
LPCLASSFACTORY iface, REFIID riid, LPVOID *ppvObj)
{
ICOM_THIS(IDefClFImpl,iface);
TRACE("(%p)->(\n\tIID:\t%s)\n",This,debugstr_guid(riid));
*ppvObj = NULL;
if(IsEqualIID(riid, &IID_IUnknown) || IsEqualIID(riid, &IID_IClassFactory)) {
*ppvObj = This;
InterlockedIncrement(&This->ref);
return S_OK;
}
TRACE("-- E_NOINTERFACE\n");
return E_NOINTERFACE;
}
/******************************************************************************
* IDefClF_fnAddRef
*/
static ULONG WINAPI IDefClF_fnAddRef(LPCLASSFACTORY iface)
{
ICOM_THIS(IDefClFImpl,iface);
TRACE("(%p)->(count=%lu)\n",This,This->ref);
return InterlockedIncrement(&This->ref);
}
/******************************************************************************
* IDefClF_fnRelease
*/
static ULONG WINAPI IDefClF_fnRelease(LPCLASSFACTORY iface)
{
ICOM_THIS(IDefClFImpl,iface);
TRACE("(%p)->(count=%lu)\n",This,This->ref);
if (!InterlockedDecrement(&This->ref))
{
if (This->pcRefDll) InterlockedDecrement(This->pcRefDll);
TRACE("-- destroying IClassFactory(%p)\n",This);
HeapFree(GetProcessHeap(),0,This);
return 0;
}
return This->ref;
}
/******************************************************************************
* IDefClF_fnCreateInstance
*/
static HRESULT WINAPI IDefClF_fnCreateInstance(
LPCLASSFACTORY iface, LPUNKNOWN pUnkOuter, REFIID riid, LPVOID *ppvObject)
{
ICOM_THIS(IDefClFImpl,iface);
TRACE("%p->(%p,\n\tIID:\t%s,%p)\n",This,pUnkOuter,debugstr_guid(riid),ppvObject);
*ppvObject = NULL;
if ( This->riidInst==NULL ||
IsEqualCLSID(riid, This->riidInst) ||
IsEqualCLSID(riid, &IID_IUnknown) )
{
return This->lpfnCI(pUnkOuter, riid, ppvObject);
}
ERR("unknown IID requested\n\tIID:\t%s\n",debugstr_guid(riid));
return E_NOINTERFACE;
}
/******************************************************************************
* IDefClF_fnLockServer
*/
static HRESULT WINAPI IDefClF_fnLockServer(LPCLASSFACTORY iface, BOOL fLock)
{
ICOM_THIS(IDefClFImpl,iface);
TRACE("%p->(0x%x), not implemented\n",This, fLock);
return E_NOTIMPL;
}
static ICOM_VTABLE(IClassFactory) dclfvt =
{
ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
IDefClF_fnQueryInterface,
IDefClF_fnAddRef,
IDefClF_fnRelease,
IDefClF_fnCreateInstance,
IDefClF_fnLockServer
};
/******************************************************************************
* SHCreateDefClassObject [SHELL32.70]
*/
HRESULT WINAPI SHCreateDefClassObject(
REFIID riid,
LPVOID* ppv,
LPFNCREATEINSTANCE lpfnCI, /* [in] create instance callback entry */
LPDWORD pcRefDll, /* [in/out] ref count of the dll */
REFIID riidInst) /* [in] optional interface to the instance */
{
IClassFactory * pcf;
TRACE("\n\tIID:\t%s %p %p %p \n\tIIDIns:\t%s\n",
debugstr_guid(riid), ppv, lpfnCI, pcRefDll, debugstr_guid(riidInst));
if (! IsEqualCLSID(riid, &IID_IClassFactory) ) return E_NOINTERFACE;
if (! (pcf = IDefClF_fnConstructor(lpfnCI, pcRefDll, riidInst))) return E_OUTOFMEMORY;
*ppv = pcf;
return NOERROR;
}
/*************************************************************************
* DragAcceptFiles [SHELL32.54]
*/
void WINAPI DragAcceptFiles(HWND hWnd, BOOL b)
{
LONG exstyle;
if( !IsWindow(hWnd) ) return;
exstyle = GetWindowLongA(hWnd,GWL_EXSTYLE);
if (b)
exstyle |= WS_EX_ACCEPTFILES;
else
exstyle &= ~WS_EX_ACCEPTFILES;
SetWindowLongA(hWnd,GWL_EXSTYLE,exstyle);
}
/*************************************************************************
* DragFinish [SHELL32.80]
*/
void WINAPI DragFinish(HDROP h)
{
TRACE("\n");
GlobalFree((HGLOBAL)h);
}
/*************************************************************************
* DragQueryPoint [SHELL32.135]
*/
BOOL WINAPI DragQueryPoint(HDROP hDrop, POINT *p)
{
DROPFILES *lpDropFileStruct;
BOOL bRet;
TRACE("\n");
lpDropFileStruct = (DROPFILES *) GlobalLock(hDrop);
*p = lpDropFileStruct->pt;
bRet = lpDropFileStruct->fNC;
GlobalUnlock(hDrop);
return bRet;
}
/*************************************************************************
* DragQueryFile [SHELL32.81]
* DragQueryFileA [SHELL32.82]
*/
UINT WINAPI DragQueryFileA(
HDROP hDrop,
UINT lFile,
LPSTR lpszFile,
UINT lLength)
{
LPSTR lpDrop;
UINT i = 0;
DROPFILES *lpDropFileStruct = (DROPFILES *) GlobalLock(hDrop);
TRACE("(%08x, %x, %p, %u)\n", hDrop,lFile,lpszFile,lLength);
if(!lpDropFileStruct) goto end;
lpDrop = (LPSTR) lpDropFileStruct + lpDropFileStruct->pFiles;
if(lpDropFileStruct->fWide == TRUE) {
LPWSTR lpszFileW = NULL;
if(lpszFile) {
lpszFileW = (LPWSTR) HeapAlloc(GetProcessHeap(), 0, lLength*sizeof(WCHAR));
if(lpszFileW == NULL) {
goto end;
}
}
i = DragQueryFileW(hDrop, lFile, lpszFileW, lLength);
if(lpszFileW) {
WideCharToMultiByte(CP_ACP, 0, lpszFileW, -1, lpszFile, lLength, 0, NULL);
HeapFree(GetProcessHeap(), 0, lpszFileW);
}
goto end;
}
while (i++ < lFile)
{
while (*lpDrop++); /* skip filename */
if (!*lpDrop)
{
i = (lFile == 0xFFFFFFFF) ? i : 0;
goto end;
}
}
i = strlen(lpDrop);
i++;
if (!lpszFile ) goto end; /* needed buffer size */
i = (lLength > i) ? i : lLength;
lstrcpynA (lpszFile, lpDrop, i);
end:
GlobalUnlock(hDrop);
return i;
}
/*************************************************************************
* DragQueryFileW [SHELL32.133]
*/
UINT WINAPI DragQueryFileW(
HDROP hDrop,
UINT lFile,
LPWSTR lpszwFile,
UINT lLength)
{
LPWSTR lpwDrop;
UINT i = 0;
DROPFILES *lpDropFileStruct = (DROPFILES *) GlobalLock(hDrop);
TRACE("(%08x, %x, %p, %u)\n", hDrop,lFile,lpszwFile,lLength);
if(!lpDropFileStruct) goto end;
lpwDrop = (LPWSTR) ((LPSTR)lpDropFileStruct + lpDropFileStruct->pFiles);
if(lpDropFileStruct->fWide == FALSE) {
LPSTR lpszFileA = NULL;
if(lpszwFile) {
lpszFileA = (LPSTR) HeapAlloc(GetProcessHeap(), 0, lLength);
if(lpszFileA == NULL) {
goto end;
}
}
i = DragQueryFileA(hDrop, lFile, lpszFileA, lLength);
if(lpszFileA) {
MultiByteToWideChar(CP_ACP, 0, lpszFileA, -1, lpszwFile, lLength);
HeapFree(GetProcessHeap(), 0, lpszFileA);
}
goto end;
}
i = 0;
while (i++ < lFile)
{
while (*lpwDrop++); /* skip filename */
if (!*lpwDrop)
{
i = (lFile == 0xFFFFFFFF) ? i : 0;
goto end;
}
}
i = strlenW(lpwDrop);
i++;
if ( !lpszwFile) goto end; /* needed buffer size */
i = (lLength > i) ? i : lLength;
lstrcpynW (lpszwFile, lpwDrop, i);
end:
GlobalUnlock(hDrop);
return i;
}
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