dlls/browseui/progressdlg.c

   1 /*
   2  *      Progress dialog
   3  *
   4  *      Copyright 2007  Mikolaj Zalewski
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "config.h"
  22
  23 #include <stdarg.h>
  24
  25 #define COBJMACROS
  26
  27 #include "wine/debug.h"
  28 #include "windef.h"
  29 #include "winbase.h"
  30 #include "winreg.h"
  31 #include "winuser.h"
  32 #include "shlwapi.h"
  33 #include "winerror.h"
  34 #include "objbase.h"
  35
  36 #include "shlguid.h"
  37 #include "shlobj.h"
  38
  39 #include "wine/unicode.h"
  40
  41 #include "browseui.h"
  42 #include "resids.h"
  43
  44 WINE_DEFAULT_DEBUG_CHANNEL(browseui);
  45
  46 #define CANCEL_MSG_LINE 2
  47
  48 /* Note: to avoid a deadlock we don't want to send messages to the dialog
  49  * with the critical section held. Instead we only mark what fields should be
  50  * updated and the dialog proc does the update */
  51 #define UPDATE_PROGRESS         0x1
  52 #define UPDATE_TITLE            0x2
  53 #define UPDATE_LINE1            0x4
  54 #define UPDATE_LINE2            (UPDATE_LINE1<<1)
  55 #define UPDATE_LINE3            (UPDATE_LINE2<<2)
  56
  57
  58 #define WM_DLG_UPDATE   (WM_APP+1)  /* set to the dialog when it should update */
  59 #define WM_DLG_DESTROY  (WM_APP+2)  /* DestroyWindow must be called from the owning thread */
  60
  61 typedef struct tagProgressDialog {
  62     IProgressDialog IProgressDialog_iface;
  63     IOleWindow IOleWindow_iface;
  64     LONG refCount;
  65     CRITICAL_SECTION cs;
  66     HWND hwnd;
  67     DWORD dwFlags;
  68     DWORD dwUpdate;
  69     LPWSTR lines[3];
  70     LPWSTR cancelMsg;
  71     LPWSTR title;
  72     BOOL isCancelled;
  73     ULONGLONG ullCompleted;
  74     ULONGLONG ullTotal;
  75     HWND hwndDisabledParent;    /* For modal dialog: the parent that need to be re-enabled when the dialog ends */
  76 } ProgressDialog;
  77
  78 static inline ProgressDialog *impl_from_IProgressDialog(IProgressDialog *iface)
  79 {
  80     return CONTAINING_RECORD(iface, ProgressDialog, IProgressDialog_iface);
  81 }
  82
  83 static inline ProgressDialog *impl_from_IOleWindow(IOleWindow *iface)
  84 {
  85     return CONTAINING_RECORD(iface, ProgressDialog, IOleWindow_iface);
  86 }
  87
  88 static void set_buffer(LPWSTR *buffer, LPCWSTR string)
  89 {
  90     static const WCHAR empty_string[] = {0};
  91     IMalloc *malloc;
  92     ULONG cb;
  93
  94     if (string == NULL)
  95         string = empty_string;
  96     CoGetMalloc(1, &malloc);
  97
  98     cb = (strlenW(string) + 1)*sizeof(WCHAR);
  99     if (*buffer == NULL || cb > IMalloc_GetSize(malloc, *buffer))
 100         *buffer = IMalloc_Realloc(malloc, *buffer, cb);
 101     memcpy(*buffer, string, cb);
 102 }
 103
 104 struct create_params
 105 {
 106     ProgressDialog *This;
 107     HANDLE hEvent;
 108     HWND hwndParent;
 109 };
 110
 111 static LPWSTR load_string(HINSTANCE hInstance, UINT uiResourceId)
 112 {
 113     WCHAR string[256];
 114     LPWSTR ret;
 115
 116     LoadStringW(hInstance, uiResourceId, string, sizeof(string)/sizeof(string[0]));
 117     ret = HeapAlloc(GetProcessHeap(), 0, (strlenW(string) + 1) * sizeof(WCHAR));
 118     strcpyW(ret, string);
 119     return ret;
 120 }
 121
 122 static void set_progress_marquee(ProgressDialog *This)
 123 {
 124     HWND hProgress = GetDlgItem(This->hwnd, IDC_PROGRESS_BAR);
 125     SetWindowLongW(hProgress, GWL_STYLE,
 126         GetWindowLongW(hProgress, GWL_STYLE)|PBS_MARQUEE);
 127 }
 128
 129 static void update_dialog(ProgressDialog *This, DWORD dwUpdate)
 130 {
 131     WCHAR empty[] = {0};
 132
 133     if (dwUpdate & UPDATE_TITLE)
 134         SetWindowTextW(This->hwnd, This->title);
 135
 136     if (dwUpdate & UPDATE_LINE1)
 137         SetDlgItemTextW(This->hwnd, IDC_TEXT_LINE, (This->isCancelled ? empty : This->lines[0]));
 138     if (dwUpdate & UPDATE_LINE2)
 139         SetDlgItemTextW(This->hwnd, IDC_TEXT_LINE+1, (This->isCancelled ? empty : This->lines[1]));
 140     if (dwUpdate & UPDATE_LINE3)
 141         SetDlgItemTextW(This->hwnd, IDC_TEXT_LINE+2, (This->isCancelled ? This->cancelMsg : This->lines[2]));
 142
 143     if (dwUpdate & UPDATE_PROGRESS)
 144     {
 145         ULONGLONG ullTotal = This->ullTotal;
 146         ULONGLONG ullCompleted = This->ullCompleted;
 147
 148         /* progress bar requires 32-bit coordinates */
 149         while (ullTotal >> 32)
 150         {
 151             ullTotal >>= 1;
 152             ullCompleted >>= 1;
 153         }
 154
 155         SendDlgItemMessageW(This->hwnd, IDC_PROGRESS_BAR, PBM_SETRANGE32, 0, (DWORD)ullTotal);
 156         SendDlgItemMessageW(This->hwnd, IDC_PROGRESS_BAR, PBM_SETPOS, (DWORD)ullCompleted, 0);
 157     }
 158 }
 159
 160 static void end_dialog(ProgressDialog *This)
 161 {
 162     SendMessageW(This->hwnd, WM_DLG_DESTROY, 0, 0);
 163     /* native doesn't re-enable the window? */
 164     if (This->hwndDisabledParent)
 165         EnableWindow(This->hwndDisabledParent, TRUE);
 166     This->hwnd = NULL;
 167 }
 168
 169 static INT_PTR CALLBACK dialog_proc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
 170 {
 171     ProgressDialog *This = (ProgressDialog *)GetWindowLongPtrW(hwnd, DWLP_USER);
 172
 173     switch (msg)
 174     {
 175         case WM_INITDIALOG:
 176         {
 177             struct create_params *params = (struct create_params *)lParam;
 178
 179             /* Note: until we set the hEvent, the object is protected by
 180              * the critical section held by StartProgress */
 181             SetWindowLongPtrW(hwnd, DWLP_USER, (LONG_PTR)params->This);
 182             This = params->This;
 183             This->hwnd = hwnd;
 184
 185             if (This->dwFlags & PROGDLG_NOPROGRESSBAR)
 186                 ShowWindow(GetDlgItem(hwnd, IDC_PROGRESS_BAR), SW_HIDE);
 187             if (This->dwFlags & PROGDLG_NOCANCEL)
 188                 ShowWindow(GetDlgItem(hwnd, IDCANCEL), SW_HIDE);
 189             if (This->dwFlags & PROGDLG_MARQUEEPROGRESS)
 190                 set_progress_marquee(This);
 191             if (This->dwFlags & PROGDLG_NOMINIMIZE)
 192                 SetWindowLongW(hwnd, GWL_STYLE, GetWindowLongW(hwnd, GWL_STYLE) & (~WS_MINIMIZEBOX));
 193
 194             update_dialog(This, 0xffffffff);
 195             This->dwUpdate = 0;
 196             This->isCancelled = FALSE;
 197             SetEvent(params->hEvent);
 198             return TRUE;
 199         }
 200
 201         case WM_DLG_UPDATE:
 202             EnterCriticalSection(&This->cs);
 203             update_dialog(This, This->dwUpdate);
 204             This->dwUpdate = 0;
 205             LeaveCriticalSection(&This->cs);
 206             return TRUE;
 207
 208         case WM_DLG_DESTROY:
 209             DestroyWindow(hwnd);
 210             PostThreadMessageW(GetCurrentThreadId(), WM_NULL, 0, 0); /* wake up the GetMessage */
 211             return TRUE;
 212
 213         case WM_CLOSE:
 214         case WM_COMMAND:
 215             if (msg == WM_CLOSE || wParam == IDCANCEL)
 216             {
 217                 EnterCriticalSection(&This->cs);
 218                 This->isCancelled = TRUE;
 219
 220                 if (!This->cancelMsg)
 221                     This->cancelMsg = load_string(BROWSEUI_hinstance, IDS_CANCELLING);
 222
 223                 set_progress_marquee(This);
 224                 EnableWindow(GetDlgItem(This->hwnd, IDCANCEL), FALSE);
 225                 update_dialog(This, UPDATE_LINE1|UPDATE_LINE2|UPDATE_LINE3);
 226                 LeaveCriticalSection(&This->cs);
 227             }
 228             return TRUE;
 229     }
 230     return FALSE;
 231 }
 232
 233 static DWORD WINAPI dialog_thread(LPVOID lpParameter)
 234 {
 235     /* Note: until we set the hEvent in WM_INITDIALOG, the ProgressDialog object
 236      * is protected by the critical section held by StartProgress */
 237     struct create_params *params = lpParameter;
 238     ProgressDialog *This = params->This;
 239     HWND hwnd;
 240     MSG msg;
 241
 242     hwnd = CreateDialogParamW(BROWSEUI_hinstance, MAKEINTRESOURCEW(IDD_PROGRESS_DLG),
 243         params->hwndParent, dialog_proc, (LPARAM)params);
 244
 245     while (GetMessageW(&msg, NULL, 0, 0) > 0)
 246     {
 247         if (!IsWindow(hwnd))
 248             break;
 249         if(!IsDialogMessageW(hwnd, &msg))
 250         {
 251             TranslateMessage(&msg);
 252             DispatchMessageW(&msg);
 253         }
 254     }
 255
 256     IProgressDialog_Release(&This->IProgressDialog_iface);
 257     return 0;
 258 }
 259
 260 static void ProgressDialog_Destructor(ProgressDialog *This)
 261 {
 262     TRACE("destroying %p\n", This);
 263     if (This->hwnd)
 264         end_dialog(This);
 265     heap_free(This->lines[0]);
 266     heap_free(This->lines[1]);
 267     heap_free(This->lines[2]);
 268     heap_free(This->cancelMsg);
 269     heap_free(This->title);
 270     This->cs.DebugInfo->Spare[0] = 0;
 271     DeleteCriticalSection(&This->cs);
 272     heap_free(This);
 273     InterlockedDecrement(&BROWSEUI_refCount);
 274 }
 275
 276 static HRESULT WINAPI ProgressDialog_QueryInterface(IProgressDialog *iface, REFIID iid, LPVOID *ppvOut)
 277 {
 278     ProgressDialog *This = impl_from_IProgressDialog(iface);
 279
 280     TRACE("(%p, %s, %p)\n", iface, debugstr_guid(iid), ppvOut);
 281     if (!ppvOut)
 282         return E_POINTER;
 283
 284     *ppvOut = NULL;
 285     if (IsEqualIID(iid, &IID_IUnknown) || IsEqualIID(iid, &IID_IProgressDialog))
 286     {
 287         *ppvOut = iface;
 288     }
 289     else if (IsEqualIID(iid, &IID_IOleWindow))
 290     {
 291         *ppvOut = &This->IOleWindow_iface;
 292     }
 293
 294     if (*ppvOut)
 295     {
 296         IProgressDialog_AddRef(iface);
 297         return S_OK;
 298     }
 299
 300     WARN("unsupported interface: %s\n", debugstr_guid(iid));
 301     return E_NOINTERFACE;
 302 }
 303
 304 static ULONG WINAPI ProgressDialog_AddRef(IProgressDialog *iface)
 305 {
 306     ProgressDialog *This = impl_from_IProgressDialog(iface);
 307     return InterlockedIncrement(&This->refCount);
 308 }
 309
 310 static ULONG WINAPI ProgressDialog_Release(IProgressDialog *iface)
 311 {
 312     ProgressDialog *This = impl_from_IProgressDialog(iface);
 313     ULONG ret;
 314
 315     ret = InterlockedDecrement(&This->refCount);
 316     if (ret == 0)
 317         ProgressDialog_Destructor(This);
 318     return ret;
 319 }
 320
 321 static HRESULT WINAPI ProgressDialog_StartProgressDialog(IProgressDialog *iface, HWND hwndParent, IUnknown *punkEnableModeless, DWORD dwFlags, LPCVOID reserved)
 322 {
 323     static const INITCOMMONCONTROLSEX init = { sizeof(init), ICC_ANIMATE_CLASS };
 324     ProgressDialog *This = impl_from_IProgressDialog(iface);
 325     struct create_params params;
 326     HANDLE hThread;
 327
 328     TRACE("(%p, %p, %x, %p)\n", iface, punkEnableModeless, dwFlags, reserved);
 329     if (punkEnableModeless || reserved)
 330         FIXME("Reserved parameters not null (%p, %p)\n", punkEnableModeless, reserved);
 331     if (dwFlags & PROGDLG_AUTOTIME)
 332         FIXME("Flags PROGDLG_AUTOTIME not supported\n");
 333     if (dwFlags & PROGDLG_NOTIME)
 334         FIXME("Flags PROGDLG_NOTIME not supported\n");
 335
 336     InitCommonControlsEx( &init );
 337
 338     EnterCriticalSection(&This->cs);
 339
 340     if (This->hwnd)
 341     {
 342         LeaveCriticalSection(&This->cs);
 343         return S_OK;  /* as on XP */
 344     }
 345     This->dwFlags = dwFlags;
 346
 347     params.This = This;
 348     params.hwndParent = hwndParent;
 349     params.hEvent = CreateEventW(NULL, TRUE, FALSE, NULL);
 350
 351     /* thread holds one reference to ensure clean shutdown */
 352     IProgressDialog_AddRef(&This->IProgressDialog_iface);
 353
 354     hThread = CreateThread(NULL, 0, dialog_thread, &params, 0, NULL);
 355     WaitForSingleObject(params.hEvent, INFINITE);
 356     CloseHandle(params.hEvent);
 357     CloseHandle(hThread);
 358
 359     This->hwndDisabledParent = NULL;
 360     if (hwndParent && (dwFlags & PROGDLG_MODAL))
 361     {
 362         HWND hwndDisable = GetAncestor(hwndParent, GA_ROOT);
 363         if (EnableWindow(hwndDisable, FALSE))
 364             This->hwndDisabledParent = hwndDisable;
 365     }
 366
 367     LeaveCriticalSection(&This->cs);
 368
 369     return S_OK;
 370 }
 371
 372 static HRESULT WINAPI ProgressDialog_StopProgressDialog(IProgressDialog *iface)
 373 {
 374     ProgressDialog *This = impl_from_IProgressDialog(iface);
 375
 376     EnterCriticalSection(&This->cs);
 377     if (This->hwnd)
 378         end_dialog(This);
 379     LeaveCriticalSection(&This->cs);
 380
 381     return S_OK;
 382 }
 383
 384 static HRESULT WINAPI ProgressDialog_SetTitle(IProgressDialog *iface, LPCWSTR pwzTitle)
 385 {
 386     ProgressDialog *This = impl_from_IProgressDialog(iface);
 387     HWND hwnd;
 388
 389     TRACE("(%p, %s)\n", This, wine_dbgstr_w(pwzTitle));
 390
 391     EnterCriticalSection(&This->cs);
 392     set_buffer(&This->title, pwzTitle);
 393     This->dwUpdate |= UPDATE_TITLE;
 394     hwnd = This->hwnd;
 395     LeaveCriticalSection(&This->cs);
 396
 397     if (hwnd)
 398         SendMessageW(hwnd, WM_DLG_UPDATE, 0, 0);
 399
 400     return S_OK;
 401 }
 402
 403 static HRESULT WINAPI ProgressDialog_SetAnimation(IProgressDialog *iface, HINSTANCE hInstance, UINT uiResourceId)
 404 {
 405     FIXME("(%p, %p, %d) - stub\n", iface, hInstance, uiResourceId);
 406     return S_OK;
 407 }
 408
 409 static BOOL WINAPI ProgressDialog_HasUserCancelled(IProgressDialog *iface)
 410 {
 411     ProgressDialog *This = impl_from_IProgressDialog(iface);
 412     return This->isCancelled;
 413 }
 414
 415 static HRESULT WINAPI ProgressDialog_SetProgress64(IProgressDialog *iface, ULONGLONG ullCompleted, ULONGLONG ullTotal)
 416 {
 417     ProgressDialog *This = impl_from_IProgressDialog(iface);
 418     HWND hwnd;
 419
 420     TRACE("(%p, 0x%s, 0x%s)\n", This, wine_dbgstr_longlong(ullCompleted), wine_dbgstr_longlong(ullTotal));
 421
 422     EnterCriticalSection(&This->cs);
 423     This->ullTotal = ullTotal;
 424     This->ullCompleted = ullCompleted;
 425     This->dwUpdate |= UPDATE_PROGRESS;
 426     hwnd = This->hwnd;
 427     LeaveCriticalSection(&This->cs);
 428
 429     if (hwnd)
 430         SendMessageW(hwnd, WM_DLG_UPDATE, 0, 0);
 431
 432     return S_OK;  /* Windows sometimes returns S_FALSE */
 433 }
 434
 435 static HRESULT WINAPI ProgressDialog_SetProgress(IProgressDialog *iface, DWORD dwCompleted, DWORD dwTotal)
 436 {
 437     return IProgressDialog_SetProgress64(iface, dwCompleted, dwTotal);
 438 }
 439
 440 static HRESULT WINAPI ProgressDialog_SetLine(IProgressDialog *iface, DWORD dwLineNum, LPCWSTR pwzLine, BOOL bPath, LPCVOID reserved)
 441 {
 442     ProgressDialog *This = impl_from_IProgressDialog(iface);
 443     HWND hwnd;
 444
 445     TRACE("(%p, %d, %s, %d)\n", This, dwLineNum, wine_dbgstr_w(pwzLine), bPath);
 446
 447     if (reserved)
 448         FIXME("reserved pointer not null (%p)\n", reserved);
 449
 450     dwLineNum--;
 451     if (dwLineNum >= 3)  /* Windows seems to do something like that */
 452         dwLineNum = 0;
 453
 454     EnterCriticalSection(&This->cs);
 455     set_buffer(&This->lines[dwLineNum], pwzLine);
 456     This->dwUpdate |= UPDATE_LINE1 << dwLineNum;
 457     hwnd = (This->isCancelled ? NULL : This->hwnd); /* no sense to send the message if window cancelled */
 458     LeaveCriticalSection(&This->cs);
 459
 460     if (hwnd)
 461         SendMessageW(hwnd, WM_DLG_UPDATE, 0, 0);
 462
 463     return S_OK;
 464 }
 465
 466 static HRESULT WINAPI ProgressDialog_SetCancelMsg(IProgressDialog *iface, LPCWSTR pwzMsg, LPCVOID reserved)
 467 {
 468     ProgressDialog *This = impl_from_IProgressDialog(iface);
 469     HWND hwnd;
 470
 471     TRACE("(%p, %s)\n", This, wine_dbgstr_w(pwzMsg));
 472
 473     if (reserved)
 474         FIXME("reserved pointer not null (%p)\n", reserved);
 475
 476     EnterCriticalSection(&This->cs);
 477     set_buffer(&This->cancelMsg, pwzMsg);
 478     This->dwUpdate |= UPDATE_LINE1 << CANCEL_MSG_LINE;
 479     hwnd = (This->isCancelled ? This->hwnd : NULL); /* no sense to send the message if window not cancelled */
 480     LeaveCriticalSection(&This->cs);
 481
 482     if (hwnd)
 483         SendMessageW(hwnd, WM_DLG_UPDATE, 0, 0);
 484
 485     return S_OK;
 486 }
 487
 488 static HRESULT WINAPI ProgressDialog_Timer(IProgressDialog *iface, DWORD dwTimerAction, LPCVOID reserved)
 489 {
 490     ProgressDialog *This = impl_from_IProgressDialog(iface);
 491
 492     FIXME("(%p, %d, %p) - stub\n", This, dwTimerAction, reserved);
 493
 494     if (reserved)
 495         FIXME("Reserved field not NULL but %p\n", reserved);
 496
 497     return S_OK;
 498 }
 499
 500 static const IProgressDialogVtbl ProgressDialogVtbl =
 501 {
 502     ProgressDialog_QueryInterface,
 503     ProgressDialog_AddRef,
 504     ProgressDialog_Release,
 505
 506     ProgressDialog_StartProgressDialog,
 507     ProgressDialog_StopProgressDialog,
 508     ProgressDialog_SetTitle,
 509     ProgressDialog_SetAnimation,
 510     ProgressDialog_HasUserCancelled,
 511     ProgressDialog_SetProgress,
 512     ProgressDialog_SetProgress64,
 513     ProgressDialog_SetLine,
 514     ProgressDialog_SetCancelMsg,
 515     ProgressDialog_Timer
 516 };
 517
 518 static HRESULT WINAPI OleWindow_QueryInterface(IOleWindow *iface, REFIID iid, LPVOID *ppvOut)
 519 {
 520     ProgressDialog *This = impl_from_IOleWindow(iface);
 521     return ProgressDialog_QueryInterface(&This->IProgressDialog_iface, iid, ppvOut);
 522 }
 523
 524 static ULONG WINAPI OleWindow_AddRef(IOleWindow *iface)
 525 {
 526     ProgressDialog *This = impl_from_IOleWindow(iface);
 527     return ProgressDialog_AddRef(&This->IProgressDialog_iface);
 528 }
 529
 530 static ULONG WINAPI OleWindow_Release(IOleWindow *iface)
 531 {
 532     ProgressDialog *This = impl_from_IOleWindow(iface);
 533     return ProgressDialog_Release(&This->IProgressDialog_iface);
 534 }
 535
 536 static HRESULT WINAPI OleWindow_GetWindow(IOleWindow* iface, HWND* phwnd)
 537 {
 538     ProgressDialog *This = impl_from_IOleWindow(iface);
 539
 540     TRACE("(%p, %p)\n", This, phwnd);
 541     EnterCriticalSection(&This->cs);
 542     *phwnd = This->hwnd;
 543     LeaveCriticalSection(&This->cs);
 544     return S_OK;
 545 }
 546
 547 static HRESULT WINAPI OleWindow_ContextSensitiveHelp(IOleWindow* iface, BOOL fEnterMode)
 548 {
 549     ProgressDialog *This = impl_from_IOleWindow(iface);
 550
 551     FIXME("(%p, %d): stub\n", This, fEnterMode);
 552     return E_NOTIMPL;
 553 }
 554
 555 static const IOleWindowVtbl OleWindowVtbl =
 556 {
 557     OleWindow_QueryInterface,
 558     OleWindow_AddRef,
 559     OleWindow_Release,
 560     OleWindow_GetWindow,
 561     OleWindow_ContextSensitiveHelp
 562 };
 563
 564
 565 HRESULT ProgressDialog_Constructor(IUnknown *pUnkOuter, IUnknown **ppOut)
 566 {
 567     ProgressDialog *This;
 568     if (pUnkOuter)
 569         return CLASS_E_NOAGGREGATION;
 570
 571     This = heap_alloc_zero(sizeof(ProgressDialog));
 572     if (This == NULL)
 573         return E_OUTOFMEMORY;
 574
 575     This->IProgressDialog_iface.lpVtbl = &ProgressDialogVtbl;
 576     This->IOleWindow_iface.lpVtbl = &OleWindowVtbl;
 577     This->refCount = 1;
 578     InitializeCriticalSection(&This->cs);
 579     This->cs.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": ProgressDialog.cs");
 580
 581     TRACE("returning %p\n", This);
 582     *ppOut = (IUnknown *)&This->IProgressDialog_iface;
 583     InterlockedIncrement(&BROWSEUI_refCount);
 584     return S_OK;
 585 }