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windows-nt/Source/XPSP1/NT/shell/osshell/shole/shole.c

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2020-09-26 03:20:57 -05:00
#include "shole.h"
#include "ids.h"
#define CLONE_IT_IF_READONLY
#define ARRAYSIZE(a) (sizeof(a)/sizeof(a[0]))
class CShClientSite : public IOleClientSite, public IAdviseSink2
{
public:
CShClientSite(HWND hwndOwner, LPCTSTR pszCmdLine);
LPCTSTR ParseCmdLine(LPCTSTR pszCmdLine);
HRESULT DoVerb(LONG iVerb);
void CloseOleObject();
void ReleaseOleObject();
void ReleaseStorage(void);
void MaySaveAs(void);
void Draw(HWND hwnd, HDC hdc);
void GetFileName(LPTSTR szFile, UINT cchMax);
void Quit(void) { _hwndOwner = NULL ; _fQuit = TRUE; }
BOOL FContinue(void) { return !_fQuit; }
// IUnKnown
virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID,void **);
virtual ULONG STDMETHODCALLTYPE AddRef(void);
virtual ULONG STDMETHODCALLTYPE Release(void);
// IOleClientSite
virtual HRESULT STDMETHODCALLTYPE SaveObject(void);
virtual HRESULT STDMETHODCALLTYPE GetMoniker(DWORD, DWORD, IMoniker **);
virtual HRESULT STDMETHODCALLTYPE GetContainer(IOleContainer **);
virtual HRESULT STDMETHODCALLTYPE ShowObject(void);
virtual HRESULT STDMETHODCALLTYPE OnShowWindow(BOOL fShow);
virtual HRESULT STDMETHODCALLTYPE RequestNewObjectLayout(void);
// IAdviseSink2
virtual void STDMETHODCALLTYPE OnDataChange(FORMATETC *,STGMEDIUM *);
virtual void STDMETHODCALLTYPE OnViewChange(DWORD dwAspect,LONG lindex);
virtual void STDMETHODCALLTYPE OnRename(IMoniker *pmk);
virtual void STDMETHODCALLTYPE OnSave(void);
virtual void STDMETHODCALLTYPE OnClose(void);
virtual void STDMETHODCALLTYPE OnLinkSrcChange(IMoniker *pmk);
protected:
~CShClientSite();
UINT _cRef;
HWND _hwndOwner;
LPSTORAGE _pstgDoc; // document
LPSTORAGE _pstg; // the embedding (only one)
LPPERSISTSTORAGE _ppstg;
LPOLEOBJECT _pole;
BOOL _fDirty:1;
BOOL _fNeedToSave:1;
BOOL _fReadOnly:1;
BOOL _fCloned:1;
BOOL _fQuit:1;
BOOL _fCloseImmediately:1;
DWORD _dwConnection; // non-zero, if valid
WCHAR _wszFileName[MAX_PATH];
};
typedef CShClientSite * LPSHCLIENTSITE;
const TCHAR c_szAppName[] = TEXT("ShellOleViewer");
LRESULT CALLBACK ShWndProc(HWND hWnd, UINT iMessage, WPARAM wParam, LPARAM lParam);
void DisplayError(HWND hwndOwner, HRESULT hres, UINT idsMsg, LPCTSTR szFileName);
HINSTANCE g_hinst = NULL;
extern "C"
BOOL APIENTRY LibMain(HANDLE hDll, DWORD dwReason, LPVOID lpReserved)
{
switch(dwReason) {
case DLL_PROCESS_ATTACH:
g_hinst = (HINSTANCE)hDll;
DisableThreadLibraryCalls(g_hinst);
break;
default:
break;
}
return TRUE;
}
extern "C" void WINAPI
OpenScrap_RunDLL_Common(HWND hwndStub, HINSTANCE hInstApp, LPTSTR pszCmdLine, int nCmdShow)
{
WNDCLASS wc;
// wc.cbSize = sizeof(WNDCLASSEX);
wc.style = CS_DBLCLKS|CS_VREDRAW|CS_HREDRAW ;
wc.lpfnWndProc = ShWndProc ;
wc.cbClsExtra = 0;
wc.cbWndExtra = sizeof(LPSHCLIENTSITE) ;
wc.hInstance = g_hinst ;
wc.hIcon = NULL ;
wc.hCursor = LoadCursor(NULL, IDC_ARROW) ;
wc.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH) ;
wc.lpszMenuName = NULL ;
wc.lpszClassName = c_szAppName ;
// wc.hIconSm = NULL;
RegisterClass(&wc);
HWND hwndClientSite = CreateWindowEx(WS_EX_TOOLWINDOW | WS_EX_OVERLAPPEDWINDOW,
c_szAppName,
#ifdef DEBUG
TEXT("(Debug only) SHOLE.EXE"),
WS_VISIBLE | WS_OVERLAPPEDWINDOW,
#else
TEXT(""),
WS_OVERLAPPEDWINDOW,
#endif
CW_USEDEFAULT, CW_USEDEFAULT,
128, 128, NULL, NULL, g_hinst, NULL);
if (hwndClientSite)
{
HRESULT hres;
hres = OleInitialize(NULL);
if (SUCCEEDED(hres))
{
DWORD dwTick;
LPSHCLIENTSITE pscs= new CShClientSite(hwndClientSite, pszCmdLine);
if (pscs)
{
UINT cRef;
hres = pscs->DoVerb(OLEIVERB_OPEN);
if (hres == S_OK)
{
MSG msg;
while (pscs->FContinue() && GetMessage(&msg, NULL, 0, 0))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
else
{
// DoVerb failed.
if (FAILED(hres) || (hres>=IDS_HRES_MIN && hres<IDS_HRES_MAX))
{
TCHAR szFile[MAX_PATH];
pscs->GetFileName(szFile, ARRAYSIZE(szFile));
DisplayError(hwndClientSite, hres, IDS_ERR_DOVERB, szFile);
}
DestroyWindow(hwndClientSite);
}
//
// We call them just in case, the following Release
// does not release the object.
//
pscs->ReleaseOleObject();
pscs->ReleaseStorage();
pscs->MaySaveAs();
cRef = pscs->Release();
ASSERT(cRef==0);
}
DebugMsg(DM_TRACE, TEXT("so TR - WinMain About to call OleUninitialize"));
dwTick = GetCurrentTime();
OleUninitialize();
DebugMsg(DM_TRACE, TEXT("so TR - WinMain OleUninitialize took %d ticks"), GetCurrentTime()-dwTick);
}
if (IsWindow(hwndClientSite)) {
DebugMsg(DM_WARNING, TEXT("so WA - WinMain IsWindow(hwndClientSite) is still TRUE"));
DestroyWindow(hwndClientSite);
}
}
}
extern "C" void WINAPI
OpenScrap_RunDLL(HWND hwndStub, HINSTANCE hAppInstance, LPSTR lpszCmdLine, int nCmdShow)
{
#ifdef UNICODE
UINT iLen = lstrlenA(lpszCmdLine)+1;
LPWSTR lpwszCmdLine;
lpwszCmdLine = (LPWSTR)LocalAlloc(LPTR,iLen*sizeof(WCHAR));
if (lpwszCmdLine)
{
MultiByteToWideChar(CP_ACP, 0,
lpszCmdLine, -1,
lpwszCmdLine, iLen);
OpenScrap_RunDLL_Common( hwndStub,
hAppInstance,
lpwszCmdLine,
nCmdShow );
LocalFree(lpwszCmdLine);
}
#else
OpenScrap_RunDLL_Common( hwndStub,
hAppInstance,
lpszCmdLine,
nCmdShow );
#endif
}
extern "C" void WINAPI
OpenScrap_RunDLLW(HWND hwndStub, HINSTANCE hAppInstance, LPWSTR lpwszCmdLine, int nCmdShow)
{
#ifdef UNICODE
OpenScrap_RunDLL_Common( hwndStub,
hAppInstance,
lpwszCmdLine,
nCmdShow );
#else
UINT iLen = WideCharToMultiByte(CP_ACP, 0,
lpwszCmdLine, -1,
NULL, 0, NULL, NULL)+1;
LPSTR lpszCmdLine;
lpszCmdLine = (LPSTR)LocalAlloc(LPTR,iLen);
if (lpszCmdLine)
{
WideCharToMultiByte(CP_ACP, 0,
lpwszCmdLine, -1,
lpszCmdLine, iLen,
NULL, NULL);
OpenScrap_RunDLL_Common( hwndStub,
hAppInstance,
lpszCmdLine,
nCmdShow );
LocalFree(lpszCmdLine);
}
#endif
}
#ifdef DEBUG
//
// Type checking
//
static RUNDLLPROC lpfnRunDLL=OpenScrap_RunDLL;
#endif
void DisplayError(HWND hwndOwner, HRESULT hres, UINT idsMsg, LPCTSTR pszFileName)
{
TCHAR szErrMsg[MAX_PATH*2];
TCHAR szFancyErr[MAX_PATH*2];
HRSRC hrsrc;
if (HIWORD(hres))
{
BOOL fSuccess = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ARGUMENT_ARRAY,
NULL,
hres,
0,
szErrMsg,
ARRAYSIZE(szErrMsg),
(va_list *)&pszFileName);
if (!fSuccess) {
idsMsg++; // map IDS_ERR_DOVERB to IDS_ERR_DOVERB_F
}
} else {
LoadString(g_hinst, LOWORD(hres), szErrMsg, ARRAYSIZE(szErrMsg));
}
szFancyErr[0] = TEXT('\0');
hrsrc = FindResource(g_hinst, MAKEINTRESOURCE(IDR_FANCYERR), RT_RCDATA);
if (hrsrc)
{
HGLOBAL hmem = LoadResource(g_hinst, hrsrc);
if (hmem)
{
HRESULT* phres = (HRESULT*)LockResource(hmem);
if (phres)
{
UINT i;
LPTSTR pszLoad = szFancyErr;
int cchLeft = ARRAYSIZE(szFancyErr);
for (i=0; phres[i] && cchLeft>0; i++) {
if (phres[i] == hres)
{
int cchRead;
cchRead = LoadString(g_hinst, IDS_FANCYERR+i, pszLoad, cchLeft);
pszLoad += cchRead;
cchLeft -= cchRead;
}
}
//
// If we have a fancy error message, hide ugly message
// from FormatMessage.
//
if (szFancyErr[0]) {
szErrMsg[0] = TEXT('\0');
}
}
}
}
ShellMessageBox(g_hinst,
hwndOwner,
MAKEINTRESOURCE(idsMsg),
MAKEINTRESOURCE(IDS_TITLE_ERR),
MB_OK | MB_ICONWARNING | MB_SETFOREGROUND,
pszFileName,
szErrMsg,
szFancyErr,
hres);
}
void CShClientSite::CloseOleObject()
{
if (_pole)
_pole->Close(OLECLOSE_NOSAVE);
}
void CShClientSite::ReleaseOleObject()
{
UINT cRef;
if (_pole)
{
if (_dwConnection) {
_pole->Unadvise(_dwConnection);
_dwConnection = 0;
}
_pole->SetClientSite(NULL);
cRef = _pole->Release();
DebugMsg(DM_TRACE, TEXT("so - TR SCS::ReleaseOleObject IOleObj::Rel returned (%d)"), cRef);
_pole=NULL;
}
if (_ppstg)
{
cRef=_ppstg->Release();
_ppstg=NULL;
DebugMsg(DM_TRACE, TEXT("so TR - SCS::ReleaseOleObject IPSTG::Release returned (%x)"), cRef);
}
}
void CShClientSite::ReleaseStorage(void)
{
UINT cRef;
if (_pstg)
{
cRef=_pstg->Release();
_pstg=NULL;
DebugMsg(DM_TRACE, TEXT("so TR - SCS::ReleaseStorage _pstg->Release returned (%x)"), cRef);
}
if (_pstgDoc)
{
cRef=_pstgDoc->Release();
_pstgDoc=NULL;
DebugMsg(DM_TRACE, TEXT("so TR - SCS::ReleaseStorage _pstgDoc->Release returned (%x)"), cRef);
}
}
void CShClientSite::MaySaveAs()
{
DebugMsg(DM_TRACE, TEXT("so TR - SCS::MaySaveAs called (%d,%d)"), _fCloned, _fNeedToSave);
if (_fCloned)
{
TCHAR szTempFile[MAX_PATH];
#ifdef UNICODE
lstrcpyn(szTempFile,_wszFileName,ARRAYSIZE(szTempFile));
#else
WideCharToMultiByte(CP_ACP, 0, _wszFileName, -1, szTempFile, ARRAYSIZE(szTempFile), NULL, NULL);
#endif
UINT id = IDNO;
if (_fNeedToSave)
{
id= ShellMessageBox(g_hinst,
_hwndOwner,
MAKEINTRESOURCE(IDS_WOULDYOUSAVEAS),
MAKEINTRESOURCE(IDS_TITLE),
MB_YESNO | MB_ICONQUESTION | MB_SETFOREGROUND,
NULL);
}
DebugMsg(DM_TRACE, TEXT("so TR - SCS::MaySaveAs id==%d"), id);
if (id==IDYES)
{
TCHAR szDesktop[MAX_PATH];
SHGetSpecialFolderPath(NULL, szDesktop, CSIDL_DESKTOP, FALSE);
BOOL fContinue;
do
{
fContinue = FALSE;
TCHAR szFile[MAX_PATH];
TCHAR szFilter[64];
szFile[0] = TEXT('\0');
LoadString(g_hinst, IDS_SCRAPFILTER, szFilter, ARRAYSIZE(szFilter));
OPENFILENAME of = {
sizeof(OPENFILENAME), // DWORD lStructSize;
_hwndOwner, // HWND hwndOwner;
NULL, // HINSTANCE hInstance;
szFilter, // LPCSTR lpstrFilter;
NULL, // LPSTR lpstrCustomFilter;
0, // DWORD nMaxCustFilter;
1, // DWORD nFilterIndex;
szFile, // LPSTR lpstrFile;
ARRAYSIZE(szFile), // DWORD nMaxFile;
NULL, // LPSTR lpstrFileTitle;
0, // DWORD nMaxFileTitle;
szDesktop, // LPCSTR lpstrInitialDir;
NULL, // LPCSTR lpstrTitle;
OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT
| OFN_NOREADONLYRETURN | OFN_PATHMUSTEXIST,
// DWORD Flags;
0, // WORD nFileOffset;
0, // WORD nFileExtension;
TEXT("shs"), // LPCSTR lpstrDefExt;
NULL, // LPARAM lCustData;
NULL, // LPOFNHOOKPROC lpfnHook;
NULL, // LPCSTR lpTemplateName;
};
if (GetSaveFileName(&of))
{
DeleteFile(szFile);
BOOL fRet = MoveFile(szTempFile, szFile);
if (fRet)
{
// Indicated that the temp file is moved
szTempFile[0] = TEXT('\0');
}
else
{
id = ShellMessageBox(g_hinst,
_hwndOwner,
MAKEINTRESOURCE(IDS_MOVEFAILED),
MAKEINTRESOURCE(IDS_TITLE),
MB_YESNO | MB_ICONWARNING | MB_SETFOREGROUND);
if (id==IDYES)
{
fContinue = TRUE;
}
}
}
} while (fContinue);
}
// If the temp file is not moved, delete it.
if (szTempFile[0])
{
DeleteFile(szTempFile);
}
}
}
void CShClientSite::Draw(HWND hwnd, HDC hdc)
{
#ifdef DEBUG
if (_ppstg)
{
HRESULT hres;
RECT rc;
GetClientRect(hwnd, &rc);
hres = OleDraw(_ppstg, DVASPECT_ICON, hdc, &rc);
DebugMsg(DM_TRACE, TEXT("so TR - SCS::Draw OleDraw(DVASPECT_ICON) returned %x"), hres);
if (FAILED(hres))
{
LPVIEWOBJECT2 pview;
hres = _ppstg->QueryInterface(IID_IViewObject2, (LPVOID*)&pview);
if (SUCCEEDED(hres))
{
SIZE size;
hres = pview->GetExtent(DVASPECT_CONTENT, (DWORD)-1,
(DVTARGETDEVICE*)NULL, &size);
DebugMsg(DM_TRACE, TEXT("so TR - SCS::Draw IVO2::GetExtent returned %x"), hres);
if (SUCCEEDED(hres))
{
int mmOld = SetMapMode(hdc, MM_HIMETRIC);
LPtoDP(hdc, (LPPOINT)&size, 1);
rc.right = size.cx;
rc.bottom = -size.cy;
SetMapMode(hdc, mmOld);
}
pview->Release();
}
hres = OleDraw(_ppstg, DVASPECT_CONTENT, hdc, &rc);
DebugMsg(DM_TRACE, TEXT("so TR - SCS::Draw OleDraw(DVASPECT_CONTENT,%d,%d) returned %x"),
hres, rc.right, rc.bottom);
}
LPOLELINK plink;
if (SUCCEEDED(hres = _ppstg->QueryInterface(IID_IOleLink, (LPVOID *)&plink)))
{
LPOLESTR pwsz;
hres = plink->GetSourceDisplayName(&pwsz);
if (SUCCEEDED(hres))
{
#ifdef UNICODE
TextOut(hdc, 0, 0, pwsz, lstrlen(pwsz));
#else
TCHAR szDisplayName[256] = TEXT("##ERROR##");
WideCharToMultiByte(CP_ACP, 0, pwsz, -1, szDisplayName, ARRAYSIZE(szDisplayName), NULL, NULL);
TextOut(hdc, 0, 0, szDisplayName, lstrlen(szDisplayName));
#endif
CoTaskMemFree(pwsz);
}
else
{
DebugMsg(DM_TRACE, TEXT("so TR SCS:Draw IMK:GetSDN failed %x"), hres);
}
plink->Release();
}
else
{
DebugMsg(DM_TRACE, TEXT("so TR SCS:Draw IPSTG:QI failed %x"), hres);
}
}
#endif
}
STDMETHODIMP CShClientSite::QueryInterface(REFIID riid,
void **ppvObject)
{
HRESULT hres;
if (IsEqualGUID(riid, IID_IOleClientSite) || IsEqualGUID(riid, IID_IUnknown)) {
_cRef++;
*ppvObject = (LPOLECLIENTSITE)this;
hres = NOERROR;
}
else if (IsEqualGUID(riid, IID_IAdviseSink) || IsEqualGUID(riid, IID_IAdviseSink2)) {
_cRef++;
*ppvObject = (LPADVISESINK2)this;
hres = NOERROR;
}
else
{
*ppvObject = NULL;
hres = ResultFromScode(E_NOINTERFACE);
}
return hres;
}
STDMETHODIMP_(ULONG) CShClientSite::AddRef(void)
{
return ++_cRef;
}
STDMETHODIMP_(ULONG) CShClientSite::Release(void)
{
if (--_cRef>0) {
return _cRef;
}
delete this;
return 0;
}
void Scrap_UpdateCachedData(LPSTORAGE pstgDoc, LPOLEOBJECT pole, LPPERSIST pps)
{
extern void Scrap_CacheClipboardData(LPSTORAGE pstgDoc, LPDATAOBJECT pdtobj, LPPERSIST pps);
DebugMsg(DM_TRACE, TEXT("so TR - S_UCD called"));
if (pstgDoc && pole && pps)
{
IDataObject *pdtobj = NULL;
HRESULT hres = pole->QueryInterface(IID_IDataObject, (LPVOID*)&pdtobj);
if (SUCCEEDED(hres)) {
DebugMsg(DM_TRACE, TEXT("so TR - S_UCD QI succeeded"));
Scrap_CacheClipboardData(pstgDoc, pdtobj, pps);
pdtobj->Release();
}
}
}
STDMETHODIMP CShClientSite::SaveObject(void)
{
DebugMsg(DM_TRACE, TEXT("sc TR - CSCS::SaveObject called"));
//
// NOTES: We need to update the cache here.
// Doing so on ::OnSave does not work (async)
// Doing so on ::OnClose is too late.
//
Scrap_UpdateCachedData(_pstgDoc, _pole, _ppstg);
HRESULT hres;
if (_pstg && _ppstg)
{
hres = OleSave(_ppstg, _pstg, TRUE);
if (SUCCEEDED(hres))
{
hres = _ppstg->SaveCompleted(NULL);
}
}
else
{
hres = ResultFromScode(E_FAIL);
}
return hres;
}
STDMETHODIMP CShClientSite::GetMoniker(DWORD dwAssign,
DWORD dwWhichMoniker,
IMoniker **ppmk)
{
HRESULT hres;
*ppmk = NULL;
switch(dwWhichMoniker)
{
case OLEWHICHMK_CONTAINER:
hres = CreateFileMoniker(_wszFileName, ppmk);
break;
case OLEWHICHMK_OBJREL:
hres = CreateItemMoniker(L"\\", L"Object", ppmk);
break;
case OLEWHICHMK_OBJFULL:
{
LPMONIKER pmkItem;
hres = CreateItemMoniker(L"\\", L"Object", &pmkItem);
if (SUCCEEDED(hres))
{
LPMONIKER pmkDoc;
hres = CreateFileMoniker(_wszFileName, &pmkDoc);
if (SUCCEEDED(hres))
{
hres = CreateGenericComposite(pmkDoc, pmkItem, ppmk);
pmkDoc->Release();
}
pmkItem->Release();
}
}
break;
default:
hres = ResultFromScode(E_INVALIDARG);
}
return hres;
}
STDMETHODIMP CShClientSite::GetContainer(
IOleContainer **ppContainer)
{
*ppContainer = NULL;
return ResultFromScode(E_NOINTERFACE);
}
STDMETHODIMP CShClientSite::ShowObject(void)
{
return NOERROR;
}
STDMETHODIMP CShClientSite::OnShowWindow(BOOL fShow)
{
DebugMsg(DM_TRACE, TEXT("so TR - CSCS::OnShowWindow called with %d"), fShow);
return NOERROR;
}
STDMETHODIMP CShClientSite::RequestNewObjectLayout(void)
{
return ResultFromScode(E_NOTIMPL);
}
//
// _cRef <- 2 because _hwndOwner has a reference count as well.
//
CShClientSite::CShClientSite(HWND hwndOwner, LPCTSTR pszCmdLine)
: _cRef(2), _hwndOwner(hwndOwner),
_pstgDoc(NULL), _pstg(NULL), _ppstg(NULL), _pole(NULL),
_fDirty(FALSE), _fNeedToSave(FALSE),
_fReadOnly(FALSE), _fCloned(FALSE), _fCloseImmediately(FALSE),
_fQuit(FALSE)
{
LPCTSTR pszFileName = ParseCmdLine(pszCmdLine);
//
// We'd better deal with quoted LFN name.
//
#ifdef NASHVILLE
//
// Strip out quotes if exists.
//
TCHAR szT[MAX_PATH];
if (*pszFileName==TEXT('"'))
{
lstrcpy(szT, pszFileName+1);
LPTSTR pszT = CharPrev(szT, szT+lstrlen(szT));
if (*pszT==TEXT('"')) {
*pszT=TEXT('\0');
}
pszFileName = szT;
}
#endif // NASHVILLE
#ifdef UNICODE
lstrcpyn(_wszFileName, pszFileName, ARRAYSIZE(_wszFileName));
#else
MultiByteToWideChar(CP_ACP, 0, pszFileName, lstrlen(pszFileName)+1,
_wszFileName, ARRAYSIZE(_wszFileName));
#endif
ASSERT(_hwndOwner)
SetWindowLongPtr(_hwndOwner, GWLP_USERDATA, (LONG_PTR)this);
}
CShClientSite::~CShClientSite()
{
ReleaseOleObject();
ReleaseStorage();
}
LPCTSTR _SkipSpace(LPCTSTR psz)
{
while(*psz==TEXT(' '))
psz++;
return psz;
}
LPCTSTR CShClientSite::ParseCmdLine(LPCTSTR pszCmdLine)
{
for (LPCTSTR psz = _SkipSpace(pszCmdLine);
(*psz == TEXT('/') || *psz == TEXT('-')) && *++psz;
psz = _SkipSpace(psz))
{
switch(*psz++)
{
case TEXT('r'):
case TEXT('R'):
_fReadOnly = TRUE;
break;
case TEXT('x'):
case TEXT('X'):
_fCloseImmediately = TRUE;
break;
}
}
return psz;
}
void CShClientSite::GetFileName(LPTSTR szFile, UINT cchMax)
{
#ifdef UNICODE
lstrcpyn(szFile, _wszFileName, cchMax);
#else
WideCharToMultiByte(CP_ACP, 0, _wszFileName, -1, szFile, cchMax, NULL, NULL);
#endif
}
const WCHAR c_wszContents[] = WSTR_SCRAPITEM;
//
// Returns:
// S_OK, succeeded. Start the message loop.
// S_FALSE, succeeded. Release the object.
// Others, failed.
//
HRESULT CShClientSite::DoVerb(LONG iVerb)
{
HRESULT hres;
DWORD wStgm;
// Must be called only once.
if (_pstgDoc) {
return ResultFromScode(E_UNEXPECTED);
}
wStgm = _fReadOnly ?
(STGM_READ | STGM_SHARE_DENY_WRITE) :
(STGM_TRANSACTED | STGM_READWRITE | STGM_SHARE_EXCLUSIVE);
hres = StgIsStorageFile(_wszFileName);
if (hres != S_OK)
{
if (hres==S_FALSE) {
hres = IDS_HRES_INVALID_SCRAPFILE;
}
return hres;
}
hres = StgOpenStorage(_wszFileName, NULL, wStgm, NULL, 0, &_pstgDoc);
#ifndef CLONE_IT_IF_READONLY
//
// If we are opening without read-only flag and StgOpenStorage failed
// with STG_E_ACCESSDENIED, retry it with read-only mode.
//
if ((hres==STG_E_ACCESSDENIED) && !_fReadOnly)
{
DebugMsg(DM_TRACE, TEXT("so TR - CSCS::DoVerb first StgOpenStorage failed, retrying it in read-only mode"));
_fReadOnly = TRUE;
wStgm = (STGM_READ | STGM_SHARE_DENY_WRITE);
hres = StgOpenStorage(_wszFileName, NULL, wStgm, NULL, 0, &_pstgDoc);
}
#else // CLONE_IT_IF_READONLY
//
// If we are opening without read-only flag and StgOpenStorage failed
// with STG_E_ACCESSDENIED, retry it with read-only mode.
//
if ((hres==STG_E_ACCESSDENIED) && !_fReadOnly)
{
LPSTORAGE pstgRead;
DebugMsg(DM_TRACE, TEXT("so TR - CSCS::DoVerb first StgOpenStorage failed, retrying it in read-only mode"));
hres = StgOpenStorage(_wszFileName, NULL, STGM_READ | STGM_SHARE_DENY_WRITE, NULL, 0, &pstgRead);
if (SUCCEEDED(hres))
{
TCHAR szDesktop[MAX_PATH];
TCHAR szTempFile[MAX_PATH];
SHGetSpecialFolderPath(_hwndOwner, szDesktop, CSIDL_DESKTOP, FALSE);
GetTempFileName(szDesktop, TEXT("Sh"), 0, szTempFile);
#ifdef UNICODE
lstrcpyn(_wszFileName,szTempFile,ARRAYSIZE(szTempFile));
#else
MultiByteToWideChar(CP_ACP, 0, szTempFile, -1, _wszFileName, ARRAYSIZE(_wszFileName));
#endif
hres = StgCreateDocfile(_wszFileName,
STGM_DIRECT | STGM_READWRITE | STGM_CREATE | STGM_SHARE_EXCLUSIVE,
0, &_pstgDoc);
if (SUCCEEDED(hres))
{
hres = pstgRead->CopyTo(0, NULL, NULL, _pstgDoc);
_pstgDoc->Release();
_pstgDoc = NULL;
if (SUCCEEDED(hres))
{
hres = StgOpenStorage(_wszFileName, NULL, wStgm, NULL, 0, &_pstgDoc);
if (SUCCEEDED(hres))
{
_fCloned = TRUE;
}
}
else
{
DeleteFile(szTempFile);
}
}
pstgRead->Release();
}
}
#endif // CLONE_IT_IF_READONLY
if (SUCCEEDED(hres))
{
if (_fReadOnly) {
wStgm = STGM_READ|STGM_SHARE_EXCLUSIVE;
}
hres = _pstgDoc->OpenStorage(c_wszContents, NULL, wStgm, NULL, 0, &_pstg);
if (SUCCEEDED(hres))
{
hres = OleLoad(_pstg, IID_IPersistStorage, this, (LPVOID *)&_ppstg);
if (SUCCEEDED(hres)) {
hres = _ppstg->QueryInterface(IID_IOleObject, (LPVOID *)&_pole);
if (SUCCEEDED(hres))
{
hres = _pole->Advise(this, &_dwConnection);
DebugMsg(DM_TRACE, TEXT("so TR - CSCS::DoVerb IOleObject::Advise returned %x"), hres);
if (SUCCEEDED(hres))
{
TCHAR szTitle[MAX_PATH];
WCHAR wszTitle[MAX_PATH];
LoadString(g_hinst, IDS_TITLE, szTitle, ARRAYSIZE(szTitle));
#ifdef UNICODE
lstrcpyn(wszTitle,szTitle,ARRAYSIZE(wszTitle));
#else
MultiByteToWideChar(CP_ACP, 0, szTitle, lstrlen(szTitle)+1,
wszTitle, ARRAYSIZE(wszTitle));
#endif
GetFileName(szTitle, ARRAYSIZE(szTitle));
LPCWSTR pwszDisplayName = _wszFileName;
#ifndef UNICODE
WCHAR wszDisplayName[MAX_PATH];
#endif
SHFILEINFO info;
DWORD result = (DWORD)SHGetFileInfo(szTitle, 0,
&info, sizeof(info), SHGFI_DISPLAYNAME);
if(result && *info.szDisplayName)
{
#ifdef UNICODE
pwszDisplayName = info.szDisplayName;
#else
MultiByteToWideChar(CP_ACP, 0,
info.szDisplayName, -1,
wszDisplayName, ARRAYSIZE(wszDisplayName));
pwszDisplayName = wszDisplayName;
#endif
}
_pole->SetHostNames(wszTitle, pwszDisplayName);
//
// OLEBUG? Unless _hwndOwner has the input focus, 16-bit
// server won't get the input focus.
//
SetFocus(_hwndOwner);
hres = _pole->DoVerb(iVerb, NULL, this, 0, _hwndOwner, NULL);
DebugMsg(DM_TRACE, TEXT("so TR - CSCS::DoVerb IOleObject::DoVerb returned %x"), hres);
if (SUCCEEDED(hres) && _fCloseImmediately) {
hres = S_FALSE;
}
}
}
else
{
DebugMsg(DM_TRACE, TEXT("so ER - CSCS::DoVerb IPSTG::QI failed %x"), hres);
}
}
else
{
DebugMsg(DM_TRACE, TEXT("so ER - CSCS::DoVerb OleLoad failed %x"), hres);
}
}
else
{
DebugMsg(DM_TRACE, TEXT("so ER - CSCS::DoVerb _pstgDoc->OpenStorage failed %x"), hres);
//
// Notes: If we just return this hres as is, the user will see
// "Can't open file, FOO.SHS", which is bogus. We need to
// translate it into a much informative message.
//
hres = IDS_HRES_INVALID_SCRAPFILE;
}
}
else
{
DebugMsg(DM_TRACE, TEXT("so ER - CSCS::DoVerb StgOpenStg failed %x"), hres);
}
return hres;
}
STDMETHODIMP_(void) CShClientSite::OnDataChange(FORMATETC *pFormatetc, STGMEDIUM *pStgmed)
{
DebugMsg(DM_TRACE, TEXT("so TR - CSCS::OnDataChange called"));
_fDirty = TRUE;
}
STDMETHODIMP_(void) CShClientSite::OnViewChange(DWORD dwAspect, LONG lindex)
{
DebugMsg(DM_TRACE, TEXT("so TR - CSCS::OnViewChange called"));
_fDirty = TRUE;
}
STDMETHODIMP_(void) CShClientSite::OnRename(IMoniker *pmk)
{
DebugMsg(DM_TRACE, TEXT("so TR - CSCS::OnRename called"));
_fDirty = TRUE;
}
STDMETHODIMP_(void) CShClientSite::OnSave(void)
{
DebugMsg(DM_TRACE, TEXT("so TR - CSCS::OnSave called"));
_fNeedToSave = TRUE;
}
STDMETHODIMP_(void) CShClientSite::OnClose(void)
{
DebugMsg(DM_TRACE, TEXT("so TR - CSCS::OnClose called"));
if (_fNeedToSave /* && _fDirty */)
{
HRESULT hres;
hres=OleSave(_ppstg, _pstg, TRUE); // fSameStorage=TRUE
DebugMsg(DM_TRACE, TEXT("so TR - CSCS:OnClose OleSave returned (%x)"), hres);
hres=_ppstg->HandsOffStorage();
DebugMsg(DM_TRACE, TEXT("so TR - CSCS:OnClose IPS:HandsOffStorage returned (%x)"), hres);
if (SUCCEEDED(hres))
{
hres = _pstg->Commit(STGC_OVERWRITE);
DebugMsg(DM_TRACE, TEXT("so TR - CSCS:OnClose _psg->Commit returned (%x)"), hres);
hres = _pstgDoc->Commit(STGC_OVERWRITE);
DebugMsg(DM_TRACE, TEXT("so TR - CSCS:OnClose _psgDoc->Commit returned (%x)"), hres);
}
}
//
// WARNING:
//
// OLE1 server pukes if we release object here. However, we need to
// call IOleObject::UnAdvice and IOleObject::SetClientSite(NULL) here
// to avoid memory leak (RPC keeps 3 reference counts to IOleClientSite
// if we delay it as well).
//
// ReleaseOleObject();
//
if (_dwConnection) {
_pole->Unadvise(_dwConnection);
_dwConnection = 0;
}
_pole->SetClientSite(NULL);
PostMessage(_hwndOwner, WM_USER, 0, 0);
}
STDMETHODIMP_(void) CShClientSite::OnLinkSrcChange
(
IMoniker *pmk
)
{
DebugMsg(DM_TRACE, TEXT("so TR - CSCS::OnLinkSrcChange called"));
_fDirty = TRUE;
}
LRESULT CALLBACK ShWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
PAINTSTRUCT ps;
HDC hdc;
LPSHCLIENTSITE pscs = (LPSHCLIENTSITE)GetWindowLongPtr(hwnd, GWLP_USERDATA);
switch(uMsg)
{
case WM_PAINT:
hdc = BeginPaint(hwnd, &ps);
if (pscs)
{
pscs->Draw(hwnd, hdc);
}
EndPaint(hwnd, &ps);
break;
case WM_CLOSE:
if (pscs)
{
pscs->CloseOleObject();
DestroyWindow(hwnd);
}
break;
case WM_USER:
if (pscs)
{
pscs->ReleaseOleObject();
PostMessage(hwnd, WM_CLOSE, 0, 0);
}
break;
case WM_DESTROY:
DebugMsg(DM_WARNING, TEXT("so WA - ShWndProc processing WM_DESTROY"));
if (pscs)
{
pscs->Quit();
pscs->Release();
SetWindowLongPtr(hwnd, GWLP_USERDATA, 0);
}
else
{
DebugMsg(DM_WARNING, TEXT("so WA - ShWndProc pscs==NULL on WM_DESTROY"));
}
#if 0
//
// Process all the pending messages, before we post WM_QUIT message.
//
MSG msg;
while (PeekMessage(&msg, NULL, NULL, NULL, PM_REMOVE))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
#endif
break;
default:
return DefWindowProc(hwnd, uMsg, wParam, lParam);
}
return 0;
}
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