| 1 | // Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information. |
| 2 | |
| 3 | #include "precomp.h" |
| 4 | |
| 5 | |
| 6 | // Exit macros |
| 7 | #define ShelExitOnLastError(x, s, ...) ExitOnLastErrorSource(DUTIL_SOURCE_SHELUTIL, x, s, __VA_ARGS__) |
| 8 | #define ShelExitOnLastErrorDebugTrace(x, s, ...) ExitOnLastErrorDebugTraceSource(DUTIL_SOURCE_SHELUTIL, x, s, __VA_ARGS__) |
| 9 | #define ShelExitWithLastError(x, s, ...) ExitWithLastErrorSource(DUTIL_SOURCE_SHELUTIL, x, s, __VA_ARGS__) |
| 10 | #define ShelExitOnFailure(x, s, ...) ExitOnFailureSource(DUTIL_SOURCE_SHELUTIL, x, s, __VA_ARGS__) |
| 11 | #define ShelExitOnRootFailure(x, s, ...) ExitOnRootFailureSource(DUTIL_SOURCE_SHELUTIL, x, s, __VA_ARGS__) |
| 12 | #define ShelExitWithRootFailure(x, e, s, ...) ExitWithRootFailureSource(DUTIL_SOURCE_SHELUTIL, x, e, s, __VA_ARGS__) |
| 13 | #define ShelExitOnFailureDebugTrace(x, s, ...) ExitOnFailureDebugTraceSource(DUTIL_SOURCE_SHELUTIL, x, s, __VA_ARGS__) |
| 14 | #define ShelExitOnNull(p, x, e, s, ...) ExitOnNullSource(DUTIL_SOURCE_SHELUTIL, p, x, e, s, __VA_ARGS__) |
| 15 | #define ShelExitOnNullWithLastError(p, x, s, ...) ExitOnNullWithLastErrorSource(DUTIL_SOURCE_SHELUTIL, p, x, s, __VA_ARGS__) |
| 16 | #define ShelExitOnNullDebugTrace(p, x, e, s, ...) ExitOnNullDebugTraceSource(DUTIL_SOURCE_SHELUTIL, p, x, e, s, __VA_ARGS__) |
| 17 | #define ShelExitOnInvalidHandleWithLastError(p, x, s, ...) ExitOnInvalidHandleWithLastErrorSource(DUTIL_SOURCE_SHELUTIL, p, x, s, __VA_ARGS__) |
| 18 | #define ShelExitOnWin32Error(e, x, s, ...) ExitOnWin32ErrorSource(DUTIL_SOURCE_SHELUTIL, e, x, s, __VA_ARGS__) |
| 19 | #define ShelExitOnGdipFailure(g, x, s, ...) ExitOnGdipFailureSource(DUTIL_SOURCE_SHELUTIL, g, x, s, __VA_ARGS__) |
| 20 | |
| 21 | static PFN_SHELLEXECUTEEXW vpfnShellExecuteExW = ::ShellExecuteExW; |
| 22 | |
| 23 | static HRESULT DAPI GetFolderFromCsidl( |
| 24 | __out_z LPWSTR* psczFolderPath, |
| 25 | __in int csidlFolder |
| 26 | ); |
| 27 | static HRESULT GetDesktopShellView( |
| 28 | __in REFIID riid, |
| 29 | __out void **ppv |
| 30 | ); |
| 31 | static HRESULT GetShellDispatchFromView( |
| 32 | __in IShellView *psv, |
| 33 | __in REFIID riid, |
| 34 | __out void **ppv |
| 35 | ); |
| 36 | |
| 37 | /******************************************************************** |
| 38 | ShelFunctionOverride - overrides the shell functions. Typically used |
| 39 | for unit testing. |
| 40 | |
| 41 | *********************************************************************/ |
| 42 | extern "C" void DAPI ShelFunctionOverride( |
| 43 | __in_opt PFN_SHELLEXECUTEEXW pfnShellExecuteExW |
| 44 | ) |
| 45 | { |
| 46 | vpfnShellExecuteExW = pfnShellExecuteExW ? pfnShellExecuteExW : ::ShellExecuteExW; |
| 47 | } |
| 48 | |
| 49 | |
| 50 | /******************************************************************** |
| 51 | ShelExec() - executes a target. |
| 52 | |
| 53 | *******************************************************************/ |
| 54 | extern "C" HRESULT DAPI ShelExec( |
| 55 | __in_z LPCWSTR wzTargetPath, |
| 56 | __in_z_opt LPCWSTR wzParameters, |
| 57 | __in_z_opt LPCWSTR wzVerb, |
| 58 | __in_z_opt LPCWSTR wzWorkingDirectory, |
| 59 | __in int nShowCmd, |
| 60 | __in_opt HWND hwndParent, |
| 61 | __out_opt HANDLE* phProcess |
| 62 | ) |
| 63 | { |
| 64 | HRESULT hr = S_OK; |
| 65 | SHELLEXECUTEINFOW shExecInfo = { }; |
| 66 | size_t cchWorkingDirectory = 0; |
| 67 | |
| 68 | // CreateProcessW has undocumented MAX_PATH restriction for lpCurrentDirectory even when long path support is enabled. |
| 69 | if (wzWorkingDirectory && FAILED(::StringCchLengthW(wzWorkingDirectory, MAX_PATH - 1, &cchWorkingDirectory))) |
| 70 | { |
| 71 | wzWorkingDirectory = NULL; |
| 72 | } |
| 73 | |
| 74 | shExecInfo.cbSize = sizeof(SHELLEXECUTEINFO); |
| 75 | shExecInfo.fMask = SEE_MASK_FLAG_DDEWAIT | SEE_MASK_FLAG_NO_UI | SEE_MASK_NOCLOSEPROCESS; |
| 76 | shExecInfo.hwnd = hwndParent; |
| 77 | shExecInfo.lpVerb = wzVerb; |
| 78 | shExecInfo.lpFile = wzTargetPath; |
| 79 | shExecInfo.lpParameters = wzParameters; |
| 80 | shExecInfo.lpDirectory = wzWorkingDirectory; |
| 81 | shExecInfo.nShow = nShowCmd; |
| 82 | |
| 83 | if (!vpfnShellExecuteExW(&shExecInfo)) |
| 84 | { |
| 85 | ShelExitWithLastError(hr, "ShellExecEx failed with return code: %d", Dutil_er); |
| 86 | } |
| 87 | |
| 88 | if (phProcess) |
| 89 | { |
| 90 | *phProcess = shExecInfo.hProcess; |
| 91 | shExecInfo.hProcess = NULL; |
| 92 | } |
| 93 | |
| 94 | LExit: |
| 95 | ReleaseHandle(shExecInfo.hProcess); |
| 96 | |
| 97 | return hr; |
| 98 | } |
| 99 | |
| 100 | |
| 101 | /******************************************************************** |
| 102 | ShelExecUnelevated() - executes a target unelevated. |
| 103 | |
| 104 | *******************************************************************/ |
| 105 | extern "C" HRESULT DAPI ShelExecUnelevated( |
| 106 | __in_z LPCWSTR wzTargetPath, |
| 107 | __in_z_opt LPCWSTR wzParameters, |
| 108 | __in_z_opt LPCWSTR wzVerb, |
| 109 | __in_z_opt LPCWSTR wzWorkingDirectory, |
| 110 | __in int nShowCmd |
| 111 | ) |
| 112 | { |
| 113 | HRESULT hr = S_OK; |
| 114 | BSTR bstrTargetPath = NULL; |
| 115 | VARIANT vtParameters = { }; |
| 116 | VARIANT vtVerb = { }; |
| 117 | VARIANT vtWorkingDirectory = { }; |
| 118 | VARIANT vtShow = { }; |
| 119 | IShellView* psv = NULL; |
| 120 | IShellDispatch2* psd = NULL; |
| 121 | |
| 122 | bstrTargetPath = ::SysAllocString(wzTargetPath); |
| 123 | ShelExitOnNull(bstrTargetPath, hr, E_OUTOFMEMORY, "Failed to allocate target path BSTR."); |
| 124 | |
| 125 | if (wzParameters && *wzParameters) |
| 126 | { |
| 127 | vtParameters.vt = VT_BSTR; |
| 128 | vtParameters.bstrVal = ::SysAllocString(wzParameters); |
| 129 | ShelExitOnNull(bstrTargetPath, hr, E_OUTOFMEMORY, "Failed to allocate parameters BSTR."); |
| 130 | } |
| 131 | |
| 132 | if (wzVerb && *wzVerb) |
| 133 | { |
| 134 | vtVerb.vt = VT_BSTR; |
| 135 | vtVerb.bstrVal = ::SysAllocString(wzVerb); |
| 136 | ShelExitOnNull(bstrTargetPath, hr, E_OUTOFMEMORY, "Failed to allocate verb BSTR."); |
| 137 | } |
| 138 | |
| 139 | if (wzWorkingDirectory && *wzWorkingDirectory) |
| 140 | { |
| 141 | vtWorkingDirectory.vt = VT_BSTR; |
| 142 | vtWorkingDirectory.bstrVal = ::SysAllocString(wzWorkingDirectory); |
| 143 | ShelExitOnNull(bstrTargetPath, hr, E_OUTOFMEMORY, "Failed to allocate working directory BSTR."); |
| 144 | } |
| 145 | |
| 146 | vtShow.vt = VT_INT; |
| 147 | vtShow.intVal = nShowCmd; |
| 148 | |
| 149 | hr = GetDesktopShellView(IID_PPV_ARGS(&psv)); |
| 150 | ShelExitOnFailure(hr, "Failed to get desktop shell view."); |
| 151 | |
| 152 | hr = GetShellDispatchFromView(psv, IID_PPV_ARGS(&psd)); |
| 153 | ShelExitOnFailure(hr, "Failed to get shell dispatch from view."); |
| 154 | |
| 155 | hr = psd->ShellExecute(bstrTargetPath, vtParameters, vtWorkingDirectory, vtVerb, vtShow); |
| 156 | if (S_FALSE == hr) |
| 157 | { |
| 158 | hr = HRESULT_FROM_WIN32(ERROR_CANCELLED); |
| 159 | } |
| 160 | ShelExitOnRootFailure(hr, "Failed to launch unelevate executable: %ls", bstrTargetPath); |
| 161 | |
| 162 | LExit: |
| 163 | ReleaseObject(psd); |
| 164 | ReleaseObject(psv); |
| 165 | ReleaseBSTR(vtWorkingDirectory.bstrVal); |
| 166 | ReleaseBSTR(vtVerb.bstrVal); |
| 167 | ReleaseBSTR(vtParameters.bstrVal); |
| 168 | ReleaseBSTR(bstrTargetPath); |
| 169 | |
| 170 | return hr; |
| 171 | } |
| 172 | |
| 173 | |
| 174 | static HRESULT DAPI GetFolderFromCsidl( |
| 175 | __out_z LPWSTR* psczFolderPath, |
| 176 | __in int csidlFolder |
| 177 | ) |
| 178 | { |
| 179 | HRESULT hr = S_OK; |
| 180 | WCHAR wzPath[MAX_PATH]; |
| 181 | |
| 182 | hr = ::SHGetFolderPathW(NULL, csidlFolder | CSIDL_FLAG_CREATE, NULL, SHGFP_TYPE_CURRENT, wzPath); |
| 183 | ShelExitOnFailure(hr, "Failed to get folder path for CSIDL: %d", csidlFolder); |
| 184 | |
| 185 | hr = StrAllocString(psczFolderPath, wzPath, 0); |
| 186 | ShelExitOnFailure(hr, "Failed to copy shell folder path: %ls", wzPath); |
| 187 | |
| 188 | hr = PathBackslashTerminate(psczFolderPath); |
| 189 | ShelExitOnFailure(hr, "Failed to backslash terminate shell folder path: %ls", *psczFolderPath); |
| 190 | |
| 191 | LExit: |
| 192 | return hr; |
| 193 | } |
| 194 | |
| 195 | |
| 196 | EXTERN_C typedef HRESULT (STDAPICALLTYPE *PFN_SHGetKnownFolderPath)( |
| 197 | REFKNOWNFOLDERID rfid, |
| 198 | DWORD dwFlags, |
| 199 | HANDLE hToken, |
| 200 | PWSTR *ppszPath |
| 201 | ); |
| 202 | |
| 203 | extern "C" HRESULT DAPI ShelGetKnownFolder( |
| 204 | __out_z LPWSTR* psczFolderPath, |
| 205 | __in REFKNOWNFOLDERID rfidFolder |
| 206 | ) |
| 207 | { |
| 208 | HRESULT hr = S_OK; |
| 209 | HMODULE hShell32Dll = NULL; |
| 210 | PFN_SHGetKnownFolderPath pfn = NULL; |
| 211 | LPWSTR pwzPath = NULL; |
| 212 | |
| 213 | hr = LoadSystemLibrary(L"shell32.dll", &hShell32Dll); |
| 214 | if (E_MODNOTFOUND == hr) |
| 215 | { |
| 216 | TraceError(hr, "Failed to load shell32.dll"); |
| 217 | ExitFunction1(hr = E_NOTIMPL); |
| 218 | } |
| 219 | ShelExitOnFailure(hr, "Failed to load shell32.dll."); |
| 220 | |
| 221 | pfn = reinterpret_cast<PFN_SHGetKnownFolderPath>(::GetProcAddress(hShell32Dll, "SHGetKnownFolderPath")); |
| 222 | ShelExitOnNull(pfn, hr, E_NOTIMPL, "Failed to find SHGetKnownFolderPath entry point."); |
| 223 | |
| 224 | hr = pfn(rfidFolder, KF_FLAG_CREATE, NULL, &pwzPath); |
| 225 | ShelExitOnFailure(hr, "Failed to get known folder path."); |
| 226 | |
| 227 | hr = StrAllocString(psczFolderPath, pwzPath, 0); |
| 228 | ShelExitOnFailure(hr, "Failed to copy shell folder path: %ls", pwzPath); |
| 229 | |
| 230 | hr = PathBackslashTerminate(psczFolderPath); |
| 231 | ShelExitOnFailure(hr, "Failed to backslash terminate shell folder path: %ls", *psczFolderPath); |
| 232 | |
| 233 | LExit: |
| 234 | if (pwzPath) |
| 235 | { |
| 236 | ::CoTaskMemFree(pwzPath); |
| 237 | } |
| 238 | |
| 239 | if (hShell32Dll) |
| 240 | { |
| 241 | ::FreeLibrary(hShell32Dll); |
| 242 | } |
| 243 | |
| 244 | return hr; |
| 245 | } |
| 246 | |
| 247 | extern "C" HRESULT DAPI ShelGetFolder( |
| 248 | __out_z LPWSTR* psczFolderPath, |
| 249 | __in int csidlFolder |
| 250 | ) |
| 251 | { |
| 252 | HRESULT hr = S_OK; |
| 253 | LPWSTR sczPath = NULL; |
| 254 | KNOWNFOLDERID rfid = { }; |
| 255 | |
| 256 | csidlFolder &= ~CSIDL_FLAG_MASK; |
| 257 | |
| 258 | switch (csidlFolder) |
| 259 | { |
| 260 | case CSIDL_ADMINTOOLS: |
| 261 | rfid = FOLDERID_AdminTools; |
| 262 | break; |
| 263 | case CSIDL_APPDATA: |
| 264 | rfid = FOLDERID_RoamingAppData; |
| 265 | break; |
| 266 | case CSIDL_CDBURN_AREA: |
| 267 | rfid = FOLDERID_CDBurning; |
| 268 | break; |
| 269 | case CSIDL_COMMON_ADMINTOOLS: |
| 270 | rfid = FOLDERID_CommonAdminTools; |
| 271 | break; |
| 272 | case CSIDL_COMMON_APPDATA: |
| 273 | rfid = FOLDERID_ProgramData; |
| 274 | break; |
| 275 | case CSIDL_COMMON_DESKTOPDIRECTORY: |
| 276 | rfid = FOLDERID_PublicDesktop; |
| 277 | break; |
| 278 | case CSIDL_COMMON_DOCUMENTS: |
| 279 | rfid = FOLDERID_PublicDocuments; |
| 280 | break; |
| 281 | case CSIDL_COMMON_MUSIC: |
| 282 | rfid = FOLDERID_PublicMusic; |
| 283 | break; |
| 284 | case CSIDL_COMMON_OEM_LINKS: |
| 285 | rfid = FOLDERID_CommonOEMLinks; |
| 286 | break; |
| 287 | case CSIDL_COMMON_PICTURES: |
| 288 | rfid = FOLDERID_PublicPictures; |
| 289 | break; |
| 290 | case CSIDL_COMMON_PROGRAMS: |
| 291 | rfid = FOLDERID_CommonPrograms; |
| 292 | break; |
| 293 | case CSIDL_COMMON_STARTMENU: |
| 294 | rfid = FOLDERID_CommonStartMenu; |
| 295 | break; |
| 296 | case CSIDL_COMMON_STARTUP: __fallthrough; |
| 297 | case CSIDL_COMMON_ALTSTARTUP: |
| 298 | rfid = FOLDERID_CommonStartup; |
| 299 | break; |
| 300 | case CSIDL_COMMON_TEMPLATES: |
| 301 | rfid = FOLDERID_CommonTemplates; |
| 302 | break; |
| 303 | case CSIDL_COMMON_VIDEO: |
| 304 | rfid = FOLDERID_PublicVideos; |
| 305 | break; |
| 306 | case CSIDL_COOKIES: |
| 307 | rfid = FOLDERID_Cookies; |
| 308 | break; |
| 309 | case CSIDL_DESKTOP: |
| 310 | case CSIDL_DESKTOPDIRECTORY: |
| 311 | rfid = FOLDERID_Desktop; |
| 312 | break; |
| 313 | case CSIDL_FAVORITES: __fallthrough; |
| 314 | case CSIDL_COMMON_FAVORITES: |
| 315 | rfid = FOLDERID_Favorites; |
| 316 | break; |
| 317 | case CSIDL_FONTS: |
| 318 | rfid = FOLDERID_Fonts; |
| 319 | break; |
| 320 | case CSIDL_HISTORY: |
| 321 | rfid = FOLDERID_History; |
| 322 | break; |
| 323 | case CSIDL_INTERNET_CACHE: |
| 324 | rfid = FOLDERID_InternetCache; |
| 325 | break; |
| 326 | case CSIDL_LOCAL_APPDATA: |
| 327 | rfid = FOLDERID_LocalAppData; |
| 328 | break; |
| 329 | case CSIDL_MYMUSIC: |
| 330 | rfid = FOLDERID_Music; |
| 331 | break; |
| 332 | case CSIDL_MYPICTURES: |
| 333 | rfid = FOLDERID_Pictures; |
| 334 | break; |
| 335 | case CSIDL_MYVIDEO: |
| 336 | rfid = FOLDERID_Videos; |
| 337 | break; |
| 338 | case CSIDL_NETHOOD: |
| 339 | rfid = FOLDERID_NetHood; |
| 340 | break; |
| 341 | case CSIDL_PERSONAL: |
| 342 | rfid = FOLDERID_Documents; |
| 343 | break; |
| 344 | case CSIDL_PRINTHOOD: |
| 345 | rfid = FOLDERID_PrintHood; |
| 346 | break; |
| 347 | case CSIDL_PROFILE: |
| 348 | rfid = FOLDERID_Profile; |
| 349 | break; |
| 350 | case CSIDL_PROGRAM_FILES: |
| 351 | rfid = FOLDERID_ProgramFiles; |
| 352 | break; |
| 353 | case CSIDL_PROGRAM_FILESX86: |
| 354 | rfid = FOLDERID_ProgramFilesX86; |
| 355 | break; |
| 356 | case CSIDL_PROGRAM_FILES_COMMON: |
| 357 | rfid = FOLDERID_ProgramFilesCommon; |
| 358 | break; |
| 359 | case CSIDL_PROGRAM_FILES_COMMONX86: |
| 360 | rfid = FOLDERID_ProgramFilesCommonX86; |
| 361 | break; |
| 362 | case CSIDL_PROGRAMS: |
| 363 | rfid = FOLDERID_Programs; |
| 364 | break; |
| 365 | case CSIDL_RECENT: |
| 366 | rfid = FOLDERID_Recent; |
| 367 | break; |
| 368 | case CSIDL_RESOURCES: |
| 369 | rfid = FOLDERID_ResourceDir; |
| 370 | break; |
| 371 | case CSIDL_RESOURCES_LOCALIZED: |
| 372 | rfid = FOLDERID_LocalizedResourcesDir; |
| 373 | break; |
| 374 | case CSIDL_SENDTO: |
| 375 | rfid = FOLDERID_SendTo; |
| 376 | break; |
| 377 | case CSIDL_STARTMENU: |
| 378 | rfid = FOLDERID_StartMenu; |
| 379 | break; |
| 380 | case CSIDL_STARTUP: |
| 381 | case CSIDL_ALTSTARTUP: |
| 382 | rfid = FOLDERID_Startup; |
| 383 | break; |
| 384 | case CSIDL_SYSTEM: |
| 385 | rfid = FOLDERID_System; |
| 386 | break; |
| 387 | case CSIDL_SYSTEMX86: |
| 388 | rfid = FOLDERID_SystemX86; |
| 389 | break; |
| 390 | case CSIDL_TEMPLATES: |
| 391 | rfid = FOLDERID_Templates; |
| 392 | break; |
| 393 | case CSIDL_WINDOWS: |
| 394 | rfid = FOLDERID_Windows; |
| 395 | break; |
| 396 | default: |
| 397 | ShelExitWithRootFailure(hr, E_INVALIDARG, "Unknown csidl: %d", csidlFolder); |
| 398 | } |
| 399 | |
| 400 | hr = ShelGetKnownFolder(&sczPath, rfid); |
| 401 | if (E_NOTIMPL == hr) |
| 402 | { |
| 403 | hr = S_FALSE; |
| 404 | } |
| 405 | ShelExitOnFailure(hr, "Failed to get known folder."); |
| 406 | |
| 407 | if (S_FALSE == hr) |
| 408 | { |
| 409 | hr = GetFolderFromCsidl(&sczPath, csidlFolder); |
| 410 | ShelExitOnFailure(hr, "Failed to get csidl folder."); |
| 411 | } |
| 412 | |
| 413 | *psczFolderPath = sczPath; |
| 414 | sczPath = NULL; |
| 415 | |
| 416 | LExit: |
| 417 | ReleaseStr(sczPath); |
| 418 | |
| 419 | return hr; |
| 420 | } |
| 421 | |
| 422 | |
| 423 | // Internal functions. |
| 424 | |
| 425 | static HRESULT GetDesktopShellView( |
| 426 | __in REFIID riid, |
| 427 | __out void **ppv |
| 428 | ) |
| 429 | { |
| 430 | HRESULT hr = S_OK; |
| 431 | IShellWindows* psw = NULL; |
| 432 | HWND hwnd = NULL; |
| 433 | IDispatch* pdisp = NULL; |
| 434 | VARIANT vEmpty = {}; // VT_EMPTY |
| 435 | IShellBrowser* psb = NULL; |
| 436 | IShellFolder* psf = NULL; |
| 437 | IShellView* psv = NULL; |
| 438 | |
| 439 | // use the shell view for the desktop using the shell windows automation to find the |
| 440 | // desktop web browser and then grabs its view |
| 441 | // returns IShellView, IFolderView and related interfaces |
| 442 | hr = ::CoCreateInstance(CLSID_ShellWindows, NULL, CLSCTX_LOCAL_SERVER, IID_PPV_ARGS(&psw)); |
| 443 | ShelExitOnFailure(hr, "Failed to get shell view."); |
| 444 | |
| 445 | hr = psw->FindWindowSW(&vEmpty, &vEmpty, SWC_DESKTOP, (long*)&hwnd, SWFO_NEEDDISPATCH, &pdisp); |
| 446 | if (S_OK == hr) |
| 447 | { |
| 448 | hr = IUnknown_QueryService(pdisp, SID_STopLevelBrowser, IID_PPV_ARGS(&psb)); |
| 449 | ShelExitOnFailure(hr, "Failed to get desktop window."); |
| 450 | |
| 451 | hr = psb->QueryActiveShellView(&psv); |
| 452 | ShelExitOnFailure(hr, "Failed to get active shell view."); |
| 453 | |
| 454 | hr = psv->QueryInterface(riid, ppv); |
| 455 | ShelExitOnFailure(hr, "Failed to query for the desktop shell view."); |
| 456 | } |
| 457 | else if (S_FALSE == hr) |
| 458 | { |
| 459 | //Windows XP |
| 460 | hr = ::SHGetDesktopFolder(&psf); |
| 461 | ShelExitOnFailure(hr, "Failed to get desktop folder."); |
| 462 | |
| 463 | hr = psf->CreateViewObject(NULL, IID_IShellView, ppv); |
| 464 | ShelExitOnFailure(hr, "Failed to query for the desktop shell view."); |
| 465 | } |
| 466 | else |
| 467 | { |
| 468 | ShelExitOnFailure(hr, "Failed to get desktop window."); |
| 469 | } |
| 470 | |
| 471 | LExit: |
| 472 | ReleaseObject(psv); |
| 473 | ReleaseObject(psb); |
| 474 | ReleaseObject(psf); |
| 475 | ReleaseObject(pdisp); |
| 476 | ReleaseObject(psw); |
| 477 | |
| 478 | return hr; |
| 479 | } |
| 480 | |
| 481 | static HRESULT GetShellDispatchFromView( |
| 482 | __in IShellView *psv, |
| 483 | __in REFIID riid, |
| 484 | __out void **ppv |
| 485 | ) |
| 486 | { |
| 487 | HRESULT hr = S_OK; |
| 488 | IDispatch *pdispBackground = NULL; |
| 489 | IShellFolderViewDual *psfvd = NULL; |
| 490 | IDispatch *pdisp = NULL; |
| 491 | |
| 492 | // From a shell view object, gets its automation interface and from that get the shell |
| 493 | // application object that implements IShellDispatch2 and related interfaces. |
| 494 | hr = psv->GetItemObject(SVGIO_BACKGROUND, IID_PPV_ARGS(&pdispBackground)); |
| 495 | ShelExitOnFailure(hr, "Failed to get the automation interface for shell."); |
| 496 | |
| 497 | hr = pdispBackground->QueryInterface(IID_PPV_ARGS(&psfvd)); |
| 498 | ShelExitOnFailure(hr, "Failed to get shell folder view dual."); |
| 499 | |
| 500 | hr = psfvd->get_Application(&pdisp); |
| 501 | ShelExitOnFailure(hr, "Failed to application object."); |
| 502 | |
| 503 | hr = pdisp->QueryInterface(riid, ppv); |
| 504 | ShelExitOnFailure(hr, "Failed to get IShellDispatch2."); |
| 505 | |
| 506 | LExit: |
| 507 | ReleaseObject(pdisp); |
| 508 | ReleaseObject(psfvd); |
| 509 | ReleaseObject(pdispBackground); |
| 510 | |
| 511 | return hr; |
| 512 | } |