ReactOS  0.4.15-dev-5452-g3c95c95
main.cpp
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1 /* Copyright (c) Mark Harmstone 2016-17
2  *
3  * This file is part of WinBtrfs.
4  *
5  * WinBtrfs is free software: you can redistribute it and/or modify
6  * it under the terms of the GNU Lesser General Public Licence as published by
7  * the Free Software Foundation, either version 3 of the Licence, or
8  * (at your option) any later version.
9  *
10  * WinBtrfs is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13  * GNU Lesser General Public Licence for more details.
14  *
15  * You should have received a copy of the GNU Lesser General Public Licence
16  * along with WinBtrfs. If not, see <http://www.gnu.org/licenses/>. */
17 
18 #include "shellext.h"
19 #include <windows.h>
20 #include <commctrl.h>
21 #include <strsafe.h>
22 #include <stddef.h>
23 #include <stdexcept>
24 #include "factory.h"
25 #include "resource.h"
26 
27 static const GUID CLSID_ShellBtrfsIconHandler = { 0x2690b74f, 0xf353, 0x422d, { 0xbb, 0x12, 0x40, 0x15, 0x81, 0xee, 0xf8, 0xf0 } };
28 static const GUID CLSID_ShellBtrfsContextMenu = { 0x2690b74f, 0xf353, 0x422d, { 0xbb, 0x12, 0x40, 0x15, 0x81, 0xee, 0xf8, 0xf1 } };
29 static const GUID CLSID_ShellBtrfsPropSheet = { 0x2690b74f, 0xf353, 0x422d, { 0xbb, 0x12, 0x40, 0x15, 0x81, 0xee, 0xf8, 0xf2 } };
30 static const GUID CLSID_ShellBtrfsVolPropSheet = { 0x2690b74f, 0xf353, 0x422d, { 0xbb, 0x12, 0x40, 0x15, 0x81, 0xee, 0xf8, 0xf3 } };
31 
32 #define COM_DESCRIPTION_ICON_HANDLER L"WinBtrfs shell extension (icon handler)"
33 #define COM_DESCRIPTION_CONTEXT_MENU L"WinBtrfs shell extension (context menu)"
34 #define COM_DESCRIPTION_PROP_SHEET L"WinBtrfs shell extension (property sheet)"
35 #define COM_DESCRIPTION_VOL_PROP_SHEET L"WinBtrfs shell extension (volume property sheet)"
36 #define ICON_OVERLAY_NAME L"WinBtrfs"
37 
38 typedef enum _PROCESS_DPI_AWARENESS {
43 
46 
49 
50 void set_dpi_aware() {
51  _SetProcessDpiAwareness SetProcessDpiAwareness;
52  HMODULE shcore = LoadLibraryW(L"shcore.dll");
53 
54  if (!shcore)
55  return;
56 
57  SetProcessDpiAwareness = (_SetProcessDpiAwareness)GetProcAddress(shcore, "SetProcessDpiAwareness");
58 
59  if (!SetProcessDpiAwareness)
60  return;
61 
62  SetProcessDpiAwareness(PROCESS_PER_MONITOR_DPI_AWARE);
63 }
64 
65 void format_size(uint64_t size, wstring& s, bool show_bytes) {
66  wstring t, bytes, kb, nb;
67  WCHAR nb2[255];
68  ULONG sr;
69  float f;
71  WCHAR dec[2], thou[4], grouping[64], *c;
72 #ifdef __REACTOS__
73  WCHAR buffer[64];
74 #endif
75 
76 #ifndef __REACTOS__
77  nb = to_wstring(size);
78 #else
79  swprintf(buffer, L"%I64d", size);
80  nb = wstring(buffer);
81 #endif
82 
83  GetLocaleInfoW(LOCALE_USER_DEFAULT, LOCALE_STHOUSAND, thou, sizeof(thou) / sizeof(WCHAR));
84 
85  dec[0] = '.'; dec[1] = 0; // not used, but silences gcc warning
86 
87  fmt.NumDigits = 0;
88  fmt.LeadingZero = 1;
89  fmt.lpDecimalSep = dec;
90  fmt.lpThousandSep = thou;
91  fmt.NegativeOrder = 0;
92 
93  // Grouping code copied from dlls/shlwapi/string.c in Wine - thank you
94 
95  fmt.Grouping = 0;
96  GetLocaleInfoW(LOCALE_USER_DEFAULT, LOCALE_SGROUPING, grouping, sizeof(grouping) / sizeof(WCHAR));
97 
98  c = grouping;
99  while (*c) {
100  if (*c >= '0' && *c < '9') {
101  fmt.Grouping *= 10;
102  fmt.Grouping += *c - '0';
103  }
104 
105  c++;
106  }
107 
108  if (fmt.Grouping % 10 == 0)
109  fmt.Grouping /= 10;
110  else
111  fmt.Grouping *= 10;
112 
113  GetNumberFormatW(LOCALE_USER_DEFAULT, 0, nb.c_str(), &fmt, nb2, sizeof(nb2) / sizeof(WCHAR));
114 
115  if (size < 1024) {
117  throw last_error(GetLastError());
118 
119  wstring_sprintf(s, t, nb2);
120  return;
121  }
122 
123  if (show_bytes) {
125  throw last_error(GetLastError());
126 
127  wstring_sprintf(bytes, t, nb2);
128  }
129 
130  if (size >= 1152921504606846976) {
131  sr = IDS_SIZE_EB;
132  f = (float)size / 1152921504606846976.0f;
133  } else if (size >= 1125899906842624) {
134  sr = IDS_SIZE_PB;
135  f = (float)size / 1125899906842624.0f;
136  } else if (size >= 1099511627776) {
137  sr = IDS_SIZE_TB;
138  f = (float)size / 1099511627776.0f;
139  } else if (size >= 1073741824) {
140  sr = IDS_SIZE_GB;
141  f = (float)size / 1073741824.0f;
142  } else if (size >= 1048576) {
143  sr = IDS_SIZE_MB;
144  f = (float)size / 1048576.0f;
145  } else {
146  sr = IDS_SIZE_KB;
147  f = (float)size / 1024.0f;
148  }
149 
150  if (!load_string(module, sr, t))
151  throw last_error(GetLastError());
152 
153  if (show_bytes) {
154  wstring_sprintf(kb, t, f);
155 
157  throw last_error(GetLastError());
158 
159  wstring_sprintf(s, t, kb.c_str(), bytes.c_str());
160  } else
161  wstring_sprintf(s, t, f);
162 }
163 
165  WCHAR* buf;
166  wstring s;
167 
169  last_error, 0, (WCHAR*)&buf, 0, nullptr) == 0) {
170  return L"(error retrieving message)";
171  }
172 
173  s = buf;
174 
175  LocalFree(buf);
176 
177  // remove trailing newline
178  while (s.length() > 0 && (s.substr(s.length() - 1, 1) == L"\r" || s.substr(s.length() - 1, 1) == L"\n"))
179  s = s.substr(0, s.length() - 1);
180 
181  return s;
182 }
183 
186  wstring s;
187  HMODULE ntdll = LoadLibraryW(L"ntdll.dll");
188 
189  if (!ntdll)
190  return L"(error loading ntdll.dll)";
191 
192  RtlNtStatusToDosError = (_RtlNtStatusToDosError)GetProcAddress(ntdll, "RtlNtStatusToDosError");
193 
194  if (!RtlNtStatusToDosError) {
195  FreeLibrary(ntdll);
196  return L"(error loading RtlNtStatusToDosError)";
197  }
198 
200 
201  FreeLibrary(ntdll);
202 
203  return s;
204 }
205 
206 bool load_string(HMODULE module, UINT id, wstring& s) {
207  int len;
208  LPWSTR retstr = nullptr;
209 
210  len = LoadStringW(module, id, (LPWSTR)&retstr, 0);
211 
212  if (len == 0)
213  return false;
214 
215  s = wstring(retstr, len);
216 
217  return true;
218 }
219 
220 #ifdef _MSC_VER
221 #pragma warning(push)
222 #pragma warning(disable: 4996)
223 #endif
224 
225 void wstring_sprintf(wstring& s, wstring fmt, ...) {
226  int len;
227  va_list args;
228 
229  va_start(args, fmt);
230  len = _vsnwprintf(nullptr, 0, fmt.c_str(), args);
231 
232  if (len == 0)
233  s = L"";
234  else {
235  s.resize(len);
236  _vsnwprintf((wchar_t*)s.c_str(), len, fmt.c_str(), args);
237  }
238 
239  va_end(args);
240 }
241 
242 #ifdef _MSC_VER
243 #pragma warning(pop)
244 #endif
245 
247  return objs_loaded == 0 ? S_OK : S_FALSE;
248 }
249 
251  if (rclsid == CLSID_ShellBtrfsIconHandler) {
252  Factory* fact = new Factory;
253  if (!fact)
254  return E_OUTOFMEMORY;
255  else {
256  fact->type = FactoryIconHandler;
257 
258  return fact->QueryInterface(riid, ppv);
259  }
260  } else if (rclsid == CLSID_ShellBtrfsContextMenu) {
261  Factory* fact = new Factory;
262  if (!fact)
263  return E_OUTOFMEMORY;
264  else {
265  fact->type = FactoryContextMenu;
266 
267  return fact->QueryInterface(riid, ppv);
268  }
269  } else if (rclsid == CLSID_ShellBtrfsPropSheet) {
270  Factory* fact = new Factory;
271  if (!fact)
272  return E_OUTOFMEMORY;
273  else {
274  fact->type = FactoryPropSheet;
275 
276  return fact->QueryInterface(riid, ppv);
277  }
278  } else if (rclsid == CLSID_ShellBtrfsVolPropSheet) {
279  Factory* fact = new Factory;
280  if (!fact)
281  return E_OUTOFMEMORY;
282  else {
283  fact->type = FactoryVolPropSheet;
284 
285  return fact->QueryInterface(riid, ppv);
286  }
287  }
288 
290 }
291 
292 static void write_reg_key(HKEY root, const wstring& keyname, const WCHAR* val, const wstring& data) {
293  LONG l;
294  HKEY hk;
295  DWORD dispos;
296 
297  l = RegCreateKeyExW(root, keyname.c_str(), 0, nullptr, 0, KEY_ALL_ACCESS, nullptr, &hk, &dispos);
298  if (l != ERROR_SUCCESS)
300 
301  l = RegSetValueExW(hk, val, 0, REG_SZ, (const BYTE*)data.c_str(), (DWORD)((data.length() + 1) * sizeof(WCHAR)));
302  if (l != ERROR_SUCCESS)
304 
305  l = RegCloseKey(hk);
306  if (l != ERROR_SUCCESS)
308 }
309 
310 static void register_clsid(const GUID clsid, const WCHAR* description) {
311  WCHAR* clsidstring;
312  wstring inproc, clsidkeyname;
314 
315  StringFromCLSID(clsid, &clsidstring);
316 
317  try {
318 #ifndef __REACTOS__
319  inproc = L"CLSID\\"s + clsidstring + L"\\InprocServer32"s;
320  clsidkeyname = L"CLSID\\"s + clsidstring;
321 #else
322  inproc = wstring(L"CLSID\\") + clsidstring + wstring(L"\\InprocServer32");
323  clsidkeyname = wstring(L"CLSID\\") + clsidstring;
324 #endif
325 
326  write_reg_key(HKEY_CLASSES_ROOT, clsidkeyname, nullptr, description);
327 
328  GetModuleFileNameW(module, dllpath, sizeof(dllpath) / sizeof(WCHAR));
329 
330  write_reg_key(HKEY_CLASSES_ROOT, inproc, nullptr, dllpath);
331 
332  write_reg_key(HKEY_CLASSES_ROOT, inproc, L"ThreadingModel", L"Apartment");
333  } catch (...) {
334  CoTaskMemFree(clsidstring);
335  throw;
336  }
337 
338  CoTaskMemFree(clsidstring);
339 }
340 
341 // implementation of RegDeleteTreeW, only available from Vista on
342 static void reg_delete_tree(HKEY hkey, const wstring& keyname) {
343  HKEY k;
344  LSTATUS ret;
345 
346  ret = RegOpenKeyExW(hkey, keyname.c_str(), 0, KEY_READ, &k);
347 
348  if (ret != ERROR_SUCCESS)
349  throw last_error(ret);
350 
351  try {
352  WCHAR* buf;
353  ULONG bufsize;
354 
355  ret = RegQueryInfoKeyW(k, nullptr, nullptr, nullptr, nullptr, &bufsize, nullptr,
356  nullptr, nullptr, nullptr, nullptr, nullptr);
357  if (ret != ERROR_SUCCESS)
358  throw last_error(ret);
359 
360  bufsize++;
361  buf = new WCHAR[bufsize];
362 
363  try {
364  do {
365  ULONG size = bufsize;
366 
367  ret = RegEnumKeyExW(k, 0, buf, &size, nullptr, nullptr, nullptr, nullptr);
368 
369  if (ret == ERROR_NO_MORE_ITEMS)
370  break;
371  else if (ret != ERROR_SUCCESS)
372  throw last_error(ret);
373 
375  } while (true);
376 
377  ret = RegDeleteKeyW(hkey, keyname.c_str());
378  if (ret != ERROR_SUCCESS)
379  throw last_error(ret);
380  } catch (...) {
381  delete[] buf;
382  throw;
383  }
384 
385  delete[] buf;
386  } catch (...) {
387  RegCloseKey(k);
388  throw;
389  }
390 
391  RegCloseKey(k);
392 }
393 
394 static void unregister_clsid(const GUID clsid) {
395  WCHAR* clsidstring;
396 
397  StringFromCLSID(clsid, &clsidstring);
398 
399  try {
400 #ifndef __REACTOS__
401  reg_delete_tree(HKEY_CLASSES_ROOT, L"CLSID\\"s + clsidstring);
402 #else
403  wstring path = wstring(L"CLSID\\") + clsidstring;
405 #endif
406  } catch (...) {
407  CoTaskMemFree(clsidstring);
408  throw;
409  }
410 
411  CoTaskMemFree(clsidstring);
412 }
413 
414 static void reg_icon_overlay(const GUID clsid, const wstring& name) {
415  WCHAR* clsidstring;
416 
417  StringFromCLSID(clsid, &clsidstring);
418 
419  try {
420 #ifndef __REACTOS__
421  wstring path = L"Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\ShellIconOverlayIdentifiers\\"s + name;
422 #else
423  wstring path = wstring(L"Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\ShellIconOverlayIdentifiers\\") + name;
424 #endif
425 
426  write_reg_key(HKEY_LOCAL_MACHINE, path, nullptr, clsidstring);
427  } catch (...) {
428  CoTaskMemFree(clsidstring);
429  throw;
430  }
431 
432  CoTaskMemFree(clsidstring);
433 }
434 
435 static void unreg_icon_overlay(const wstring& name) {
436 #ifndef __REACTOS__
437  reg_delete_tree(HKEY_LOCAL_MACHINE, L"Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\ShellIconOverlayIdentifiers\\"s + name);
438 #else
439  wstring path = wstring(L"Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\ShellIconOverlayIdentifiers\\") + name;
441 #endif
442 }
443 
444 static void reg_context_menu_handler(const GUID clsid, const wstring& filetype, const wstring& name) {
445  WCHAR* clsidstring;
446 
447  StringFromCLSID(clsid, &clsidstring);
448 
449  try {
450 #ifndef __REACTOS__
451  wstring path = filetype + L"\\ShellEx\\ContextMenuHandlers\\"s + name;
452 #else
453  wstring path = filetype + wstring(L"\\ShellEx\\ContextMenuHandlers\\") + name;
454 #endif
455 
456  write_reg_key(HKEY_CLASSES_ROOT, path, nullptr, clsidstring);
457  } catch (...) {
458  CoTaskMemFree(clsidstring);
459  throw;
460  }
461 }
462 
463 static void unreg_context_menu_handler(const wstring& filetype, const wstring& name) {
464 #ifndef __REACTOS__
465  reg_delete_tree(HKEY_CLASSES_ROOT, filetype + L"\\ShellEx\\ContextMenuHandlers\\"s + name);
466 #else
467  wstring path = filetype + wstring(L"\\ShellEx\\ContextMenuHandlers\\") + name;
469 #endif
470 }
471 
472 static void reg_prop_sheet_handler(const GUID clsid, const wstring& filetype, const wstring& name) {
473  WCHAR* clsidstring;
474 
475  StringFromCLSID(clsid, &clsidstring);
476 
477  try {
478 #ifndef __REACTOS__
479  wstring path = filetype + L"\\ShellEx\\PropertySheetHandlers\\"s + name;
480 #else
481  wstring path = filetype + wstring(L"\\ShellEx\\PropertySheetHandlers\\") + name;
482 #endif
483 
484  write_reg_key(HKEY_CLASSES_ROOT, path, nullptr, clsidstring);
485  } catch (...) {
486  CoTaskMemFree(clsidstring);
487  throw;
488  }
489 }
490 
491 static void unreg_prop_sheet_handler(const wstring& filetype, const wstring& name) {
492 #ifndef __REACTOS__
493  reg_delete_tree(HKEY_CLASSES_ROOT, filetype + L"\\ShellEx\\PropertySheetHandlers\\"s + name);
494 #else
495  wstring path = filetype + wstring(L"\\ShellEx\\PropertySheetHandlers\\") + name;
497 #endif
498 }
499 
501  try {
506 
508 
511 
515  } catch (const exception& e) {
516  error_message(nullptr, e.what());
517  return E_FAIL;
518  }
519 
520  return S_OK;
521 }
522 
524  try {
529  unreg_context_menu_handler(L"Directory\\Background", ICON_OVERLAY_NAME);
531 
536  } catch (const exception& e) {
537  error_message(nullptr, e.what());
538  return E_FAIL;
539  }
540 
541  return S_OK;
542 }
543 
544 STDAPI DllInstall(BOOL bInstall, LPCWSTR pszCmdLine) {
545  if (bInstall)
546  return DllRegisterServer();
547  else
548  return DllUnregisterServer();
549 }
550 
551 extern "C" BOOL APIENTRY DllMain(HANDLE hModule, DWORD dwReason, void* lpReserved) {
554 
555  return true;
556 }
557 
558 static void create_subvol(const wstring& fn) {
559  size_t found = fn.rfind(L"\\");
560  wstring path, file;
561  win_handle h;
562  btrfs_create_subvol* bcs;
564 
565  if (found == wstring::npos) {
566  path = L"";
567  file = fn;
568  } else {
569  path = fn.substr(0, found);
570  file = fn.substr(found + 1);
571  }
572  path += L"\\";
573 
575 
576  if (h == INVALID_HANDLE_VALUE)
577  return;
578 
579  size_t bcslen = offsetof(btrfs_create_subvol, name[0]) + (file.length() * sizeof(WCHAR));
580  bcs = (btrfs_create_subvol*)malloc(bcslen);
581 
582  bcs->readonly = false;
583  bcs->posix = false;
584  bcs->namelen = (uint16_t)(file.length() * sizeof(WCHAR));
585  memcpy(bcs->name, file.c_str(), bcs->namelen);
586 
587  NtFsControlFile(h, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_CREATE_SUBVOL, bcs, (ULONG)bcslen, nullptr, 0);
588 }
589 
590 extern "C" void CALLBACK CreateSubvolW(HWND hwnd, HINSTANCE hinst, LPWSTR lpszCmdLine, int nCmdShow) {
592 
593  command_line_to_args(lpszCmdLine, args);
594 
595  if (args.size() >= 1)
596  create_subvol(args[0]);
597 }
598 
599 static void create_snapshot2(const wstring& source, const wstring& fn) {
600  size_t found = fn.rfind(L"\\");
601  wstring path, file;
602  win_handle h, src;
605 
606  if (found == wstring::npos) {
607  path = L"";
608  file = fn;
609  } else {
610  path = fn.substr(0, found);
611  file = fn.substr(found + 1);
612  }
613  path += L"\\";
614 
616  if (src == INVALID_HANDLE_VALUE)
617  return;
618 
620 
621  if (h == INVALID_HANDLE_VALUE)
622  return;
623 
624  size_t bcslen = offsetof(btrfs_create_snapshot, name[0]) + (file.length() * sizeof(WCHAR));
625  bcs = (btrfs_create_snapshot*)malloc(bcslen);
626 
627  bcs->readonly = false;
628  bcs->posix = false;
629  bcs->namelen = (uint16_t)(file.length() * sizeof(WCHAR));
630  memcpy(bcs->name, file.c_str(), bcs->namelen);
631  bcs->subvol = src;
632 
633  NtFsControlFile(h, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_CREATE_SNAPSHOT, bcs, (ULONG)bcslen, nullptr, 0);
634 }
635 
636 extern "C" void CALLBACK CreateSnapshotW(HWND hwnd, HINSTANCE hinst, LPWSTR lpszCmdLine, int nCmdShow) {
638 
639  command_line_to_args(lpszCmdLine, args);
640 
641  if (args.size() >= 2)
642  create_snapshot2(args[0], args[1]);
643 }
644 
646  LPWSTR* l;
647  int num_args;
648 
649  args.clear();
650 
651  l = CommandLineToArgvW(cmdline, &num_args);
652 
653  if (!l)
654  return;
655 
656  try {
657  args.reserve(num_args);
658 
659  for (unsigned int i = 0; i < (unsigned int)num_args; i++) {
660  args.push_back(l[i]);
661  }
662  } catch (...) {
663  LocalFree(l);
664  throw;
665  }
666 
667  LocalFree(l);
668 }
669 
670 static string utf16_to_utf8(const wstring_view& utf16) {
671  string utf8;
672  char* buf;
673 
674  if (utf16.empty())
675  return "";
676 
677  auto utf8len = WideCharToMultiByte(CP_UTF8, 0, utf16.data(), static_cast<int>(utf16.length()), nullptr, 0, nullptr, nullptr);
678 
679  if (utf8len == 0)
680  throw last_error(GetLastError());
681 
682  buf = (char*)malloc(utf8len + sizeof(char));
683 
684  if (!buf)
686 
687  if (WideCharToMultiByte(CP_UTF8, 0, utf16.data(), static_cast<int>(utf16.length()), buf, utf8len, nullptr, nullptr) == 0) {
688  auto le = GetLastError();
689  free(buf);
690  throw last_error(le);
691  }
692 
693  buf[utf8len] = 0;
694 
695  utf8 = buf;
696 
697  free(buf);
698 
699  return utf8;
700 }
701 
702 #ifdef _MSC_VER
703 #pragma warning(push)
704 #pragma warning(disable: 4996)
705 #endif
706 
707 string_error::string_error(int resno, ...) {
708  wstring fmt, s;
709  int len;
710  va_list args;
711 
712  if (!load_string(module, resno, fmt))
713  throw runtime_error("LoadString failed."); // FIXME
714 
715  va_start(args, resno);
716  len = _vsnwprintf(nullptr, 0, fmt.c_str(), args);
717 
718  if (len == 0)
719  s = L"";
720  else {
721  s.resize(len);
722  _vsnwprintf((wchar_t*)s.c_str(), len, fmt.c_str(), args);
723  }
724 
725  va_end(args);
726 
727  msg = utf16_to_utf8(s);
728 }
729 
730 #ifdef _MSC_VER
731 #pragma warning(pop)
732 #endif
733 
734 wstring utf8_to_utf16(const string_view& utf8) {
735  wstring ret;
736  WCHAR* buf;
737 
738  if (utf8.empty())
739  return L"";
740 
741  auto utf16len = MultiByteToWideChar(CP_UTF8, 0, utf8.data(), (int)utf8.length(), nullptr, 0);
742 
743  if (utf16len == 0)
744  throw last_error(GetLastError());
745 
746  buf = (WCHAR*)malloc((utf16len + 1) * sizeof(WCHAR));
747 
748  if (!buf)
750 
751  if (MultiByteToWideChar(CP_UTF8, 0, utf8.data(), (int)utf8.length(), buf, utf16len) == 0) {
752  auto le = GetLastError();
753  free(buf);
754  throw last_error(le);
755  }
756 
757  buf[utf16len] = 0;
758 
759  ret = buf;
760 
761  free(buf);
762 
763  return ret;
764 }
765 
767  WCHAR* buf;
768 
770  errnum, 0, (WCHAR*)&buf, 0, nullptr) == 0)
771  throw runtime_error("FormatMessage failed");
772 
773  try {
774  msg = utf16_to_utf8(buf);
775  } catch (...) {
776  LocalFree(buf);
777  throw;
778  }
779 
780  LocalFree(buf);
781 }
782 
783 void error_message(HWND hwnd, const char* msg) {
784  wstring title;
785 
787 
788  auto wmsg = utf8_to_utf16(msg);
789 
790  MessageBoxW(hwnd, wmsg.c_str(), title.c_str(), MB_ICONERROR);
791 }
792 
795  HMODULE ntdll = LoadLibraryW(L"ntdll.dll");
796  WCHAR* buf;
797 
798  if (!ntdll)
799  throw runtime_error("Error loading ntdll.dll.");
800 
801  try {
802  RtlNtStatusToDosError = (_RtlNtStatusToDosError)GetProcAddress(ntdll, "RtlNtStatusToDosError");
803 
805  throw runtime_error("Error loading RtlNtStatusToDosError in ntdll.dll.");
806 
808  RtlNtStatusToDosError(Status), 0, (WCHAR*)&buf, 0, nullptr) == 0)
809  throw runtime_error("FormatMessage failed");
810 
811  try {
812  msg = utf16_to_utf8(buf);
813  } catch (...) {
814  LocalFree(buf);
815  throw;
816  }
817 
818  LocalFree(buf);
819  } catch (...) {
820  FreeLibrary(ntdll);
821  throw;
822  }
823 
824  FreeLibrary(ntdll);
825 }
#define IDS_SIZE_KB
Definition: resource.h:32
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Definition: resource.h:5
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GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint i
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Definition: heapmem.c:1577
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Definition: dsound.c:943
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