/* * self-registerable dll functions for shell32.dll * * Copyright (C) 2003 John K. Hohm * * 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 #include #include #include "windef.h" #include "winbase.h" #include "winuser.h" #include "winreg.h" #include "winerror.h" #include "ole2.h" #include "shlguid.h" #include "shell32_main.h" #include "shfldr.h" #include "shresdef.h" #include "wine/debug.h" WINE_DEFAULT_DEBUG_CHANNEL(ole); /* * Near the bottom of this file are the exported DllRegisterServer and * DllUnregisterServer, which make all this worthwhile. */ /*********************************************************************** * interface for self-registering */ struct regsvr_interface { IID const *iid; /* NULL for end of list */ LPCSTR name; /* can be NULL to omit */ IID const *base_iid; /* can be NULL to omit */ int num_methods; /* can be <0 to omit */ CLSID const *ps_clsid; /* can be NULL to omit */ CLSID const *ps_clsid32; /* can be NULL to omit */ }; static HRESULT register_interfaces(struct regsvr_interface const *list); static HRESULT unregister_interfaces(struct regsvr_interface const *list); struct regsvr_coclass { CLSID const *clsid; /* NULL for end of list */ LPCSTR name; /* can be NULL to omit */ UINT idName; /* can be 0 to omit */ LPCSTR ips; /* can be NULL to omit */ LPCSTR ips32; /* can be NULL to omit */ LPCSTR ips32_tmodel; /* can be NULL to omit */ DWORD flags; DWORD dwAttributes; DWORD dwCallForAttributes; LPCSTR clsid_str; /* can be NULL to omit */ LPCSTR progid; /* can be NULL to omit */ }; /* flags for regsvr_coclass.flags */ #define SHELLEX_MAYCHANGEDEFAULTMENU 0x00000001 #define SHELLFOLDER_WANTSFORPARSING 0x00000002 #define SHELLFOLDER_ATTRIBUTES 0x00000004 #define SHELLFOLDER_CALLFORATTRIBUTES 0x00000008 static HRESULT register_coclasses(struct regsvr_coclass const *list); static HRESULT unregister_coclasses(struct regsvr_coclass const *list); struct regsvr_namespace { CLSID const *clsid; /* CLSID of the namespace extension. NULL for end of list */ LPCWSTR parent; /* Mount point (MyComputer, Desktop, ..). */ LPCWSTR value; /* Display name of the extension. */ }; static HRESULT register_namespace_extensions(struct regsvr_namespace const *list); static HRESULT unregister_namespace_extensions(struct regsvr_namespace const *list); /*********************************************************************** * static string constants */ static WCHAR const interface_keyname[10] = { 'I', 'n', 't', 'e', 'r', 'f', 'a', 'c', 'e', 0 }; static WCHAR const base_ifa_keyname[14] = { 'B', 'a', 's', 'e', 'I', 'n', 't', 'e', 'r', 'f', 'a', 'c', 'e', 0 }; static WCHAR const num_methods_keyname[11] = { 'N', 'u', 'm', 'M', 'e', 't', 'h', 'o', 'd', 's', 0 }; static WCHAR const ps_clsid_keyname[15] = { 'P', 'r', 'o', 'x', 'y', 'S', 't', 'u', 'b', 'C', 'l', 's', 'i', 'd', 0 }; static WCHAR const ps_clsid32_keyname[17] = { 'P', 'r', 'o', 'x', 'y', 'S', 't', 'u', 'b', 'C', 'l', 's', 'i', 'd', '3', '2', 0 }; static WCHAR const clsid_keyname[6] = { 'C', 'L', 'S', 'I', 'D', 0 }; static WCHAR const ips_keyname[13] = { 'I', 'n', 'P', 'r', 'o', 'c', 'S', 'e', 'r', 'v', 'e', 'r', 0 }; static WCHAR const ips32_keyname[15] = { 'I', 'n', 'P', 'r', 'o', 'c', 'S', 'e', 'r', 'v', 'e', 'r', '3', '2', 0 }; static WCHAR const progid_keyname[7] = { 'P', 'r', 'o', 'g', 'I', 'D', 0 }; static WCHAR const shellex_keyname[8] = { 's', 'h', 'e', 'l', 'l', 'e', 'x', 0 }; static WCHAR const shellfolder_keyname[12] = { 'S', 'h', 'e', 'l', 'l', 'F', 'o', 'l', 'd', 'e', 'r', 0 }; static WCHAR const mcdm_keyname[21] = { 'M', 'a', 'y', 'C', 'h', 'a', 'n', 'g', 'e', 'D', 'e', 'f', 'a', 'u', 'l', 't', 'M', 'e', 'n', 'u', 0 }; static char const tmodel_valuename[] = "ThreadingModel"; static char const wfparsing_valuename[] = "WantsFORPARSING"; static char const attributes_valuename[] = "Attributes"; static char const cfattributes_valuename[] = "CallForAttributes"; static char const localized_valuename[] = "LocalizedString"; /*********************************************************************** * static helper functions */ static LONG register_key_guid(HKEY base, WCHAR const *name, GUID const *guid); static LONG register_key_defvalueW(HKEY base, WCHAR const *name, WCHAR const *value); static LONG register_key_defvalueA(HKEY base, WCHAR const *name, char const *value); static LONG recursive_delete_key(HKEY key); static LONG recursive_delete_keyA(HKEY base, char const *name); static LONG recursive_delete_keyW(HKEY base, WCHAR const *name); /*********************************************************************** * register_interfaces */ static HRESULT register_interfaces(struct regsvr_interface const *list) { LONG res = ERROR_SUCCESS; HKEY interface_key; res = RegCreateKeyExW(HKEY_CLASSES_ROOT, interface_keyname, 0, NULL, 0, KEY_READ | KEY_WRITE, NULL, &interface_key, NULL); if (res != ERROR_SUCCESS) goto error_return; for (; res == ERROR_SUCCESS && list->iid; ++list) { WCHAR buf[39]; HKEY iid_key; StringFromGUID2(list->iid, buf, 39); res = RegCreateKeyExW(interface_key, buf, 0, NULL, 0, KEY_READ | KEY_WRITE, NULL, &iid_key, NULL); if (res != ERROR_SUCCESS) goto error_close_interface_key; if (list->name) { res = RegSetValueExA(iid_key, NULL, 0, REG_SZ, (CONST BYTE*)(list->name), strlen(list->name) + 1); if (res != ERROR_SUCCESS) goto error_close_iid_key; } if (list->base_iid) { res = register_key_guid(iid_key, base_ifa_keyname, list->base_iid); if (res != ERROR_SUCCESS) goto error_close_iid_key; } if (0 <= list->num_methods) { static WCHAR const fmt[3] = { '%', 'd', 0 }; HKEY key; res = RegCreateKeyExW(iid_key, num_methods_keyname, 0, NULL, 0, KEY_READ | KEY_WRITE, NULL, &key, NULL); if (res != ERROR_SUCCESS) goto error_close_iid_key; wsprintfW(buf, fmt, list->num_methods); res = RegSetValueExW(key, NULL, 0, REG_SZ, (CONST BYTE*)buf, (lstrlenW(buf) + 1) * sizeof(WCHAR)); RegCloseKey(key); if (res != ERROR_SUCCESS) goto error_close_iid_key; } if (list->ps_clsid) { register_key_guid(iid_key, ps_clsid_keyname, list->ps_clsid); if (res != ERROR_SUCCESS) goto error_close_iid_key; } if (list->ps_clsid32) { register_key_guid(iid_key, ps_clsid32_keyname, list->ps_clsid32); if (res != ERROR_SUCCESS) goto error_close_iid_key; } error_close_iid_key: RegCloseKey(iid_key); } error_close_interface_key: RegCloseKey(interface_key); error_return: return res != ERROR_SUCCESS ? HRESULT_FROM_WIN32(res) : S_OK; } /*********************************************************************** * unregister_interfaces */ static HRESULT unregister_interfaces(struct regsvr_interface const *list) { LONG res = ERROR_SUCCESS; HKEY interface_key; res = RegOpenKeyExW(HKEY_CLASSES_ROOT, interface_keyname, 0, KEY_READ | KEY_WRITE, &interface_key); if (res == ERROR_FILE_NOT_FOUND) return S_OK; if (res != ERROR_SUCCESS) goto error_return; for (; res == ERROR_SUCCESS && list->iid; ++list) { WCHAR buf[39]; StringFromGUID2(list->iid, buf, 39); res = recursive_delete_keyW(interface_key, buf); } RegCloseKey(interface_key); error_return: return res != ERROR_SUCCESS ? HRESULT_FROM_WIN32(res) : S_OK; } /*********************************************************************** * register_coclasses */ static HRESULT register_coclasses(struct regsvr_coclass const *list) { LONG res = ERROR_SUCCESS; HKEY coclass_key; res = RegCreateKeyExW(HKEY_CLASSES_ROOT, clsid_keyname, 0, NULL, 0, KEY_READ | KEY_WRITE, NULL, &coclass_key, NULL); if (res != ERROR_SUCCESS) goto error_return; for (; res == ERROR_SUCCESS && list->clsid; ++list) { WCHAR buf[39]; HKEY clsid_key; StringFromGUID2(list->clsid, buf, 39); res = RegCreateKeyExW(coclass_key, buf, 0, NULL, 0, KEY_READ | KEY_WRITE, NULL, &clsid_key, NULL); if (res != ERROR_SUCCESS) goto error_close_coclass_key; if (list->name) { res = RegSetValueExA(clsid_key, NULL, 0, REG_SZ, (CONST BYTE*)(list->name), strlen(list->name) + 1); if (res != ERROR_SUCCESS) goto error_close_clsid_key; } if (list->idName) { char buffer[64] = "@%SYSTEMROOT%\\system32\\shell32.dll,-"; sprintf(buffer+strlen(buffer), "%u", list->idName); res = RegSetValueExA(clsid_key, localized_valuename, 0, REG_EXPAND_SZ, (CONST BYTE*)(buffer), strlen(buffer)+1); if (res != ERROR_SUCCESS) goto error_close_clsid_key; } if (list->ips) { res = register_key_defvalueA(clsid_key, ips_keyname, list->ips); if (res != ERROR_SUCCESS) goto error_close_clsid_key; } if (list->ips32) { HKEY ips32_key; res = RegCreateKeyExW(clsid_key, ips32_keyname, 0, NULL, 0, KEY_READ | KEY_WRITE, NULL, &ips32_key, NULL); if (res != ERROR_SUCCESS) goto error_close_clsid_key; res = RegSetValueExA(ips32_key, NULL, 0, REG_SZ, (CONST BYTE*)list->ips32, lstrlenA(list->ips32) + 1); if (res == ERROR_SUCCESS && list->ips32_tmodel) res = RegSetValueExA(ips32_key, tmodel_valuename, 0, REG_SZ, (CONST BYTE*)list->ips32_tmodel, strlen(list->ips32_tmodel) + 1); RegCloseKey(ips32_key); if (res != ERROR_SUCCESS) goto error_close_clsid_key; } if (list->flags & SHELLEX_MAYCHANGEDEFAULTMENU) { HKEY shellex_key, mcdm_key; res = RegCreateKeyExW(clsid_key, shellex_keyname, 0, NULL, 0, KEY_READ | KEY_WRITE, NULL, &shellex_key, NULL); if (res != ERROR_SUCCESS) goto error_close_clsid_key; res = RegCreateKeyExW(shellex_key, mcdm_keyname, 0, NULL, 0, KEY_READ | KEY_WRITE, NULL, &mcdm_key, NULL); RegCloseKey(shellex_key); if (res != ERROR_SUCCESS) goto error_close_clsid_key; RegCloseKey(mcdm_key); } if (list->flags & (SHELLFOLDER_WANTSFORPARSING|SHELLFOLDER_ATTRIBUTES|SHELLFOLDER_CALLFORATTRIBUTES)) { HKEY shellfolder_key; res = RegCreateKeyExW(clsid_key, shellfolder_keyname, 0, NULL, 0, KEY_READ | KEY_WRITE, NULL, &shellfolder_key, NULL); if (res != ERROR_SUCCESS) goto error_close_clsid_key; if (list->flags & SHELLFOLDER_WANTSFORPARSING) res = RegSetValueExA(shellfolder_key, wfparsing_valuename, 0, REG_SZ, (LPBYTE)"", 1); if (list->flags & SHELLFOLDER_ATTRIBUTES) res = RegSetValueExA(shellfolder_key, attributes_valuename, 0, REG_DWORD, (LPBYTE)&list->dwAttributes, sizeof(DWORD)); if (list->flags & SHELLFOLDER_CALLFORATTRIBUTES) res = RegSetValueExA(shellfolder_key, cfattributes_valuename, 0, REG_DWORD, (LPBYTE)&list->dwCallForAttributes, sizeof(DWORD)); RegCloseKey(shellfolder_key); if (res != ERROR_SUCCESS) goto error_close_clsid_key; } if (list->clsid_str) { res = register_key_defvalueA(clsid_key, clsid_keyname, list->clsid_str); if (res != ERROR_SUCCESS) goto error_close_clsid_key; } if (list->progid) { HKEY progid_key; res = register_key_defvalueA(clsid_key, progid_keyname, list->progid); if (res != ERROR_SUCCESS) goto error_close_clsid_key; res = RegCreateKeyExA(HKEY_CLASSES_ROOT, list->progid, 0, NULL, 0, KEY_READ | KEY_WRITE, NULL, &progid_key, NULL); if (res != ERROR_SUCCESS) goto error_close_clsid_key; res = register_key_defvalueW(progid_key, clsid_keyname, buf); RegCloseKey(progid_key); if (res != ERROR_SUCCESS) goto error_close_clsid_key; } error_close_clsid_key: RegCloseKey(clsid_key); } error_close_coclass_key: RegCloseKey(coclass_key); error_return: return res != ERROR_SUCCESS ? HRESULT_FROM_WIN32(res) : S_OK; } /*********************************************************************** * unregister_coclasses */ static HRESULT unregister_coclasses(struct regsvr_coclass const *list) { LONG res = ERROR_SUCCESS; HKEY coclass_key; res = RegOpenKeyExW(HKEY_CLASSES_ROOT, clsid_keyname, 0, KEY_READ | KEY_WRITE, &coclass_key); if (res == ERROR_FILE_NOT_FOUND) return S_OK; if (res != ERROR_SUCCESS) goto error_return; for (; res == ERROR_SUCCESS && list->clsid; ++list) { WCHAR buf[39]; StringFromGUID2(list->clsid, buf, 39); res = recursive_delete_keyW(coclass_key, buf); if (res != ERROR_SUCCESS) goto error_close_coclass_key; if (list->progid) { res = recursive_delete_keyA(HKEY_CLASSES_ROOT, list->progid); if (res != ERROR_SUCCESS) goto error_close_coclass_key; } } error_close_coclass_key: RegCloseKey(coclass_key); error_return: return res != ERROR_SUCCESS ? HRESULT_FROM_WIN32(res) : S_OK; } /********************************************************************** * register_namespace_extensions */ static WCHAR *get_namespace_key(struct regsvr_namespace const *list) { static const WCHAR wszExplorerKey[] = { 'S','o','f','t','w','a','r','e','\\','M','i','c','r','o','s','o','f','t','\\', 'W','i','n','d','o','w','s','\\','C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\', 'E','x','p','l','o','r','e','r','\\',0 }; static const WCHAR wszNamespace[] = { '\\','N','a','m','e','s','p','a','c','e','\\',0 }; WCHAR *pwszKey, *pwszCLSID; pwszKey = HeapAlloc(GetProcessHeap(), 0, sizeof(wszExplorerKey)+sizeof(wszNamespace)+ sizeof(WCHAR)*(lstrlenW(list->parent)+CHARS_IN_GUID)); if (!pwszKey) return NULL; lstrcpyW(pwszKey, wszExplorerKey); lstrcatW(pwszKey, list->parent); lstrcatW(pwszKey, wszNamespace); if (FAILED(StringFromCLSID(list->clsid, &pwszCLSID))) { HeapFree(GetProcessHeap(), 0, pwszKey); return NULL; } lstrcatW(pwszKey, pwszCLSID); CoTaskMemFree(pwszCLSID); return pwszKey; } static HRESULT register_namespace_extensions(struct regsvr_namespace const *list) { WCHAR *pwszKey; HKEY hKey; for (; list->clsid; list++) { pwszKey = get_namespace_key(list); /* Create the key and set the value. */ if (pwszKey && ERROR_SUCCESS == RegCreateKeyExW(HKEY_LOCAL_MACHINE, pwszKey, 0, NULL, 0, KEY_WRITE, NULL, &hKey, NULL)) { RegSetValueExW(hKey, NULL, 0, REG_SZ, (LPBYTE)list->value, sizeof(WCHAR)*(lstrlenW(list->value)+1)); RegCloseKey(hKey); } HeapFree(GetProcessHeap(), 0, pwszKey); } return S_OK; } static HRESULT unregister_namespace_extensions(struct regsvr_namespace const *list) { WCHAR *pwszKey; for (; list->clsid; list++) { pwszKey = get_namespace_key(list); RegDeleteKeyW(HKEY_LOCAL_MACHINE, pwszKey); HeapFree(GetProcessHeap(), 0, pwszKey); } return S_OK; } /*********************************************************************** * regsvr_key_guid */ static LONG register_key_guid(HKEY base, WCHAR const *name, GUID const *guid) { WCHAR buf[39]; StringFromGUID2(guid, buf, 39); return register_key_defvalueW(base, name, buf); } /*********************************************************************** * regsvr_key_defvalueW */ static LONG register_key_defvalueW( HKEY base, WCHAR const *name, WCHAR const *value) { LONG res; HKEY key; res = RegCreateKeyExW(base, name, 0, NULL, 0, KEY_READ | KEY_WRITE, NULL, &key, NULL); if (res != ERROR_SUCCESS) return res; res = RegSetValueExW(key, NULL, 0, REG_SZ, (CONST BYTE*)value, (lstrlenW(value) + 1) * sizeof(WCHAR)); RegCloseKey(key); return res; } /*********************************************************************** * regsvr_key_defvalueA */ static LONG register_key_defvalueA( HKEY base, WCHAR const *name, char const *value) { LONG res; HKEY key; res = RegCreateKeyExW(base, name, 0, NULL, 0, KEY_READ | KEY_WRITE, NULL, &key, NULL); if (res != ERROR_SUCCESS) return res; res = RegSetValueExA(key, NULL, 0, REG_SZ, (CONST BYTE*)value, lstrlenA(value) + 1); RegCloseKey(key); return res; } /*********************************************************************** * recursive_delete_key */ static LONG recursive_delete_key(HKEY key) { LONG res; WCHAR subkey_name[MAX_PATH]; DWORD cName; HKEY subkey; for (;;) { cName = sizeof(subkey_name) / sizeof(WCHAR); res = RegEnumKeyExW(key, 0, subkey_name, &cName, NULL, NULL, NULL, NULL); if (res != ERROR_SUCCESS && res != ERROR_MORE_DATA) { res = ERROR_SUCCESS; /* presumably we're done enumerating */ break; } res = RegOpenKeyExW(key, subkey_name, 0, KEY_READ | KEY_WRITE, &subkey); if (res == ERROR_FILE_NOT_FOUND) continue; if (res != ERROR_SUCCESS) break; res = recursive_delete_key(subkey); RegCloseKey(subkey); if (res != ERROR_SUCCESS) break; } if (res == ERROR_SUCCESS) res = RegDeleteKeyW(key, 0); return res; } /*********************************************************************** * recursive_delete_keyA */ static LONG recursive_delete_keyA(HKEY base, char const *name) { LONG res; HKEY key; res = RegOpenKeyExA(base, name, 0, KEY_READ | KEY_WRITE, &key); if (res == ERROR_FILE_NOT_FOUND) return ERROR_SUCCESS; if (res != ERROR_SUCCESS) return res; res = recursive_delete_key(key); RegCloseKey(key); return res; } /*********************************************************************** * recursive_delete_keyW */ static LONG recursive_delete_keyW(HKEY base, WCHAR const *name) { LONG res; HKEY key; res = RegOpenKeyExW(base, name, 0, KEY_READ | KEY_WRITE, &key); if (res == ERROR_FILE_NOT_FOUND) return ERROR_SUCCESS; if (res != ERROR_SUCCESS) return res; res = recursive_delete_key(key); RegCloseKey(key); return res; } /*********************************************************************** * coclass list */ static GUID const CLSID_Desktop = { 0x00021400, 0x0000, 0x0000, {0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x46} }; static GUID const CLSID_Shortcut = { 0x00021401, 0x0000, 0x0000, {0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x46} }; static struct regsvr_coclass const coclass_list[] = { { &CLSID_Desktop, "Desktop", IDS_DESKTOP, NULL, "shell32.dll", "Apartment" }, { &CLSID_DragDropHelper, "Shell Drag and Drop Helper", 0, NULL, "shell32.dll", "Apartment" }, { &CLSID_MyComputer, "My Computer", IDS_MYCOMPUTER, NULL, "shell32.dll", "Apartment" }, { &CLSID_Shortcut, "Shortcut", 0, NULL, "shell32.dll", "Apartment", SHELLEX_MAYCHANGEDEFAULTMENU }, { &CLSID_AutoComplete, "AutoComplete", 0, NULL, "shell32.dll", "Apartment", }, { &CLSID_UnixFolder, "/", 0, NULL, "shell32.dll", "Apartment", SHELLFOLDER_WANTSFORPARSING }, { &CLSID_UnixDosFolder, "/", 0, NULL, "shell32.dll", "Apartment", SHELLFOLDER_WANTSFORPARSING|SHELLFOLDER_ATTRIBUTES|SHELLFOLDER_CALLFORATTRIBUTES, SFGAO_FILESYSANCESTOR|SFGAO_FOLDER|SFGAO_HASSUBFOLDER, SFGAO_FILESYSTEM }, { &CLSID_FolderShortcut, "Foldershortcut", 0, NULL, "shell32.dll", "Apartment", SHELLFOLDER_ATTRIBUTES|SHELLFOLDER_CALLFORATTRIBUTES, SFGAO_FILESYSTEM|SFGAO_FOLDER|SFGAO_LINK, SFGAO_HASSUBFOLDER|SFGAO_FILESYSTEM|SFGAO_FOLDER|SFGAO_FILESYSANCESTOR }, { &CLSID_MyDocuments, "My Documents", IDS_PERSONAL, NULL, "shell32.dll", "Apartment", SHELLFOLDER_WANTSFORPARSING|SHELLFOLDER_ATTRIBUTES|SHELLFOLDER_CALLFORATTRIBUTES, SFGAO_FILESYSANCESTOR|SFGAO_FOLDER|SFGAO_HASSUBFOLDER, SFGAO_FILESYSTEM }, { NULL } /* list terminator */ }; /*********************************************************************** * interface list */ static struct regsvr_interface const interface_list[] = { { NULL } /* list terminator */ }; /*********************************************************************** * namespace extensions list */ static const WCHAR wszDesktop[] = { 'D','e','s','k','t','o','p',0 }; static const WCHAR wszSlash[] = { '/', 0 }; static const WCHAR wszMyDocuments[] = { 'M','y',' ','D','o','c','u','m','e','n','t','s', 0 }; static struct regsvr_namespace const namespace_extensions_list[] = { { &CLSID_UnixDosFolder, wszDesktop, wszSlash }, { &CLSID_MyDocuments, wszDesktop, wszMyDocuments }, { NULL } }; /*********************************************************************** * DllRegisterServer (SHELL32.@) */ HRESULT WINAPI DllRegisterServer(void) { HRESULT hr; TRACE("\n"); hr = register_coclasses(coclass_list); if (SUCCEEDED(hr)) hr = register_interfaces(interface_list); if (SUCCEEDED(hr)) hr = SHELL_RegisterShellFolders(); if (SUCCEEDED(hr)) hr = register_namespace_extensions(namespace_extensions_list); return hr; } /*********************************************************************** * DllUnregisterServer (SHELL32.@) */ HRESULT WINAPI DllUnregisterServer(void) { HRESULT hr; TRACE("\n"); hr = unregister_coclasses(coclass_list); if (SUCCEEDED(hr)) hr = unregister_interfaces(interface_list); if (SUCCEEDED(hr)) hr = unregister_namespace_extensions(namespace_extensions_list); return hr; }