src/msw/utils.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        msw/utils.cpp
   3 // Purpose:     Various utilities
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #ifndef WX_PRECOMP
  28     #include "wx/utils.h"
  29     #include "wx/app.h"
  30     #include "wx/intl.h"
  31     #include "wx/log.h"
  32 #endif  //WX_PRECOMP
  33
  34 #include "wx/apptrait.h"
  35 #include "wx/dynlib.h"
  36 #include "wx/dynload.h"
  37
  38 #include "wx/confbase.h"        // for wxExpandEnvVars()
  39
  40 #include "wx/msw/private.h"     // includes <windows.h>
  41 #include "wx/msw/missing.h"     // CHARSET_HANGUL
  42
  43 // Doesn't work with Cygwin at present
  44 #if wxUSE_SOCKETS && (defined(__GNUWIN32_OLD__) || defined(__WXWINCE__) || defined(__CYGWIN32__))
  45     // apparently we need to include winsock.h to get WSADATA and other stuff
  46     // used in wxGetFullHostName() with the old mingw32 versions
  47     #include <winsock.h>
  48 #endif
  49
  50 #include "wx/timer.h"
  51
  52 #if !defined(__GNUWIN32__) && !defined(__SALFORDC__) && !defined(__WXMICROWIN__) && !defined(__WXWINCE__)
  53     #include <direct.h>
  54
  55     #ifndef __MWERKS__
  56         #include <dos.h>
  57     #endif
  58 #endif  //GNUWIN32
  59
  60 #if defined(__CYGWIN__)
  61     #include <sys/unistd.h>
  62     #include <sys/stat.h>
  63     #include <sys/cygwin.h> // for cygwin_conv_to_full_win32_path()
  64 #endif  //GNUWIN32
  65
  66 #ifdef __BORLANDC__ // Please someone tell me which version of Borland needs
  67                     // this (3.1 I believe) and how to test for it.
  68                     // If this works for Borland 4.0 as well, then no worries.
  69     #include <dir.h>
  70 #endif
  71
  72 // VZ: there is some code using NetXXX() functions to get the full user name:
  73 //     I don't think it's a good idea because they don't work under Win95 and
  74 //     seem to return the same as wxGetUserId() under NT. If you really want
  75 //     to use them, just #define USE_NET_API
  76 #undef USE_NET_API
  77
  78 #ifdef USE_NET_API
  79     #include <lm.h>
  80 #endif // USE_NET_API
  81
  82 #if defined(__WIN32__) && !defined(__WXMICROWIN__) && !defined(__WXWINCE__)
  83     #ifndef __UNIX__
  84         #include <io.h>
  85     #endif
  86
  87     #ifndef __GNUWIN32__
  88         #include <shellapi.h>
  89     #endif
  90 #endif
  91
  92 #ifndef __WATCOMC__
  93     #if !(defined(_MSC_VER) && (_MSC_VER > 800))
  94         #include <errno.h>
  95     #endif
  96 #endif
  97
  98 // For wxKillAllChildren
  99 #include <tlhelp32.h>
 100
 101 // ----------------------------------------------------------------------------
 102 // constants
 103 // ----------------------------------------------------------------------------
 104
 105 // In the WIN.INI file
 106 static const wxChar WX_SECTION[] = wxT("wxWindows");
 107 static const wxChar eUSERNAME[]  = wxT("UserName");
 108
 109 // ============================================================================
 110 // implementation
 111 // ============================================================================
 112
 113 // ----------------------------------------------------------------------------
 114 // get host name and related
 115 // ----------------------------------------------------------------------------
 116
 117 // Get hostname only (without domain name)
 118 bool wxGetHostName(wxChar *buf, int maxSize)
 119 {
 120 #if defined(__WXWINCE__)
 121     // TODO-CE
 122     wxUnusedVar(buf);
 123     wxUnusedVar(maxSize);
 124     return false;
 125 #elif defined(__WIN32__) && !defined(__WXMICROWIN__)
 126     DWORD nSize = maxSize;
 127     if ( !::GetComputerName(buf, &nSize) )
 128     {
 129         wxLogLastError(wxT("GetComputerName"));
 130
 131         return false;
 132     }
 133
 134     return true;
 135 #else
 136     wxChar *sysname;
 137     const wxChar *default_host = wxT("noname");
 138
 139     if ((sysname = wxGetenv(wxT("SYSTEM_NAME"))) == NULL) {
 140         GetProfileString(WX_SECTION, eHOSTNAME, default_host, buf, maxSize - 1);
 141     } else
 142         wxStrncpy(buf, sysname, maxSize - 1);
 143     buf[maxSize] = wxT('\0');
 144     return *buf ? true : false;
 145 #endif
 146 }
 147
 148 // get full hostname (with domain name if possible)
 149 bool wxGetFullHostName(wxChar *buf, int maxSize)
 150 {
 151 #if !defined( __WXMICROWIN__) && wxUSE_DYNAMIC_LOADER && wxUSE_SOCKETS
 152     // TODO should use GetComputerNameEx() when available
 153
 154     // we don't want to always link with Winsock DLL as we might not use it at
 155     // all, so load it dynamically here if needed (and don't complain if it is
 156     // missing, we handle this)
 157     wxLogNull noLog;
 158
 159     wxDynamicLibrary dllWinsock(_T("ws2_32.dll"), wxDL_VERBATIM);
 160     if ( dllWinsock.IsLoaded() )
 161     {
 162         typedef int (PASCAL *WSAStartup_t)(WORD, WSADATA *);
 163         typedef int (PASCAL *gethostname_t)(char *, int);
 164         typedef hostent* (PASCAL *gethostbyname_t)(const char *);
 165         typedef hostent* (PASCAL *gethostbyaddr_t)(const char *, int , int);
 166         typedef int (PASCAL *WSACleanup_t)(void);
 167
 168         #define LOAD_WINSOCK_FUNC(func)                                       \
 169             func ## _t                                                        \
 170                 pfn ## func = (func ## _t)dllWinsock.GetSymbol(_T(#func))
 171
 172         LOAD_WINSOCK_FUNC(WSAStartup);
 173
 174         WSADATA wsa;
 175         if ( pfnWSAStartup && pfnWSAStartup(MAKEWORD(1, 1), &wsa) == 0 )
 176         {
 177             LOAD_WINSOCK_FUNC(gethostname);
 178
 179             wxString host;
 180             if ( pfngethostname )
 181             {
 182                 char bufA[256];
 183                 if ( pfngethostname(bufA, WXSIZEOF(bufA)) == 0 )
 184                 {
 185                     // gethostname() won't usually include the DNS domain name,
 186                     // for this we need to work a bit more
 187                     if ( !strchr(bufA, '.') )
 188                     {
 189                         LOAD_WINSOCK_FUNC(gethostbyname);
 190
 191                         struct hostent *pHostEnt = pfngethostbyname
 192                                                     ? pfngethostbyname(bufA)
 193                                                     : NULL;
 194
 195                         if ( pHostEnt )
 196                         {
 197                             // Windows will use DNS internally now
 198                             LOAD_WINSOCK_FUNC(gethostbyaddr);
 199
 200                             pHostEnt = pfngethostbyaddr
 201                                         ? pfngethostbyaddr(pHostEnt->h_addr,
 202                                                            4, AF_INET)
 203                                         : NULL;
 204                         }
 205
 206                         if ( pHostEnt )
 207                         {
 208                             host = wxString::FromAscii(pHostEnt->h_name);
 209                         }
 210                     }
 211                 }
 212             }
 213
 214             LOAD_WINSOCK_FUNC(WSACleanup);
 215             if ( pfnWSACleanup )
 216                 pfnWSACleanup();
 217
 218
 219             if ( !host.empty() )
 220             {
 221                 wxStrncpy(buf, host, maxSize);
 222
 223                 return true;
 224             }
 225         }
 226     }
 227 #endif // !__WXMICROWIN__
 228
 229     return wxGetHostName(buf, maxSize);
 230 }
 231
 232 // Get user ID e.g. jacs
 233 bool wxGetUserId(wxChar *buf, int maxSize)
 234 {
 235 #if defined(__WXWINCE__)
 236     // TODO-CE
 237     wxUnusedVar(buf);
 238     wxUnusedVar(maxSize);
 239     return false;
 240 #elif defined(__WIN32__) && !defined(__WXMICROWIN__)
 241     DWORD nSize = maxSize;
 242     if ( ::GetUserName(buf, &nSize) == 0 )
 243     {
 244         // actually, it does happen on Win9x if the user didn't log on
 245         DWORD res = ::GetEnvironmentVariable(wxT("username"), buf, maxSize);
 246         if ( res == 0 )
 247         {
 248             // not found
 249             return false;
 250         }
 251     }
 252
 253     return true;
 254 #else   // __WXMICROWIN__
 255     wxChar *user;
 256     const wxChar *default_id = wxT("anonymous");
 257
 258     // Can't assume we have NIS (PC-NFS) or some other ID daemon
 259     // So we ...
 260     if (  (user = wxGetenv(wxT("USER"))) == NULL &&
 261             (user = wxGetenv(wxT("LOGNAME"))) == NULL )
 262     {
 263         // Use wxWidgets configuration data (comming soon)
 264         GetProfileString(WX_SECTION, eUSERID, default_id, buf, maxSize - 1);
 265     }
 266     else
 267     {
 268         wxStrncpy(buf, user, maxSize - 1);
 269     }
 270
 271     return *buf ? true : false;
 272 #endif
 273 }
 274
 275 // Get user name e.g. Julian Smart
 276 bool wxGetUserName(wxChar *buf, int maxSize)
 277 {
 278 #if defined(__WXWINCE__)
 279     // TODO-CE
 280     wxUnusedVar(buf);
 281     wxUnusedVar(maxSize);
 282     return false;
 283 #elif defined(USE_NET_API)
 284     CHAR szUserName[256];
 285     if ( !wxGetUserId(szUserName, WXSIZEOF(szUserName)) )
 286         return false;
 287
 288     // TODO how to get the domain name?
 289     CHAR *szDomain = "";
 290
 291     // the code is based on the MSDN example (also see KB article Q119670)
 292     WCHAR wszUserName[256];          // Unicode user name
 293     WCHAR wszDomain[256];
 294     LPBYTE ComputerName;
 295
 296     USER_INFO_2 *ui2;         // User structure
 297
 298     // Convert ANSI user name and domain to Unicode
 299     MultiByteToWideChar( CP_ACP, 0, szUserName, strlen(szUserName)+1,
 300             wszUserName, WXSIZEOF(wszUserName) );
 301     MultiByteToWideChar( CP_ACP, 0, szDomain, strlen(szDomain)+1,
 302             wszDomain, WXSIZEOF(wszDomain) );
 303
 304     // Get the computer name of a DC for the domain.
 305     if ( NetGetDCName( NULL, wszDomain, &ComputerName ) != NERR_Success )
 306     {
 307         wxLogError(wxT("Can not find domain controller"));
 308
 309         goto error;
 310     }
 311
 312     // Look up the user on the DC
 313     NET_API_STATUS status = NetUserGetInfo( (LPWSTR)ComputerName,
 314             (LPWSTR)&wszUserName,
 315             2, // level - we want USER_INFO_2
 316             (LPBYTE *) &ui2 );
 317     switch ( status )
 318     {
 319         case NERR_Success:
 320             // ok
 321             break;
 322
 323         case NERR_InvalidComputer:
 324             wxLogError(wxT("Invalid domain controller name."));
 325
 326             goto error;
 327
 328         case NERR_UserNotFound:
 329             wxLogError(wxT("Invalid user name '%s'."), szUserName);
 330
 331             goto error;
 332
 333         default:
 334             wxLogSysError(wxT("Can't get information about user"));
 335
 336             goto error;
 337     }
 338
 339     // Convert the Unicode full name to ANSI
 340     WideCharToMultiByte( CP_ACP, 0, ui2->usri2_full_name, -1,
 341             buf, maxSize, NULL, NULL );
 342
 343     return true;
 344
 345 error:
 346     wxLogError(wxT("Couldn't look up full user name."));
 347
 348     return false;
 349 #else  // !USE_NET_API
 350     // Could use NIS, MS-Mail or other site specific programs
 351     // Use wxWidgets configuration data
 352     bool ok = GetProfileString(WX_SECTION, eUSERNAME, wxEmptyString, buf, maxSize - 1) != 0;
 353     if ( !ok )
 354     {
 355         ok = wxGetUserId(buf, maxSize);
 356     }
 357
 358     if ( !ok )
 359     {
 360         wxStrncpy(buf, wxT("Unknown User"), maxSize);
 361     }
 362
 363     return true;
 364 #endif // Win32/16
 365 }
 366
 367 const wxChar* wxGetHomeDir(wxString *pstr)
 368 {
 369     wxString& strDir = *pstr;
 370
 371     // first branch is for Cygwin
 372 #if defined(__UNIX__)
 373     const wxChar *szHome = wxGetenv("HOME");
 374     if ( szHome == NULL ) {
 375       // we're homeless...
 376       wxLogWarning(_("can't find user's HOME, using current directory."));
 377       strDir = wxT(".");
 378     }
 379     else
 380        strDir = szHome;
 381
 382     // add a trailing slash if needed
 383     if ( strDir.Last() != wxT('/') )
 384       strDir << wxT('/');
 385
 386     #ifdef __CYGWIN__
 387         // Cygwin returns unix type path but that does not work well
 388         static wxChar windowsPath[MAX_PATH];
 389         cygwin_conv_to_full_win32_path(strDir, windowsPath);
 390         strDir = windowsPath;
 391     #endif
 392 #elif defined(__WXWINCE__)
 393     strDir = wxT("\\");
 394 #else
 395     strDir.clear();
 396
 397     // If we have a valid HOME directory, as is used on many machines that
 398     // have unix utilities on them, we should use that.
 399     const wxChar *szHome = wxGetenv(wxT("HOME"));
 400
 401     if ( szHome != NULL )
 402     {
 403         strDir = szHome;
 404     }
 405     else // no HOME, try HOMEDRIVE/PATH
 406     {
 407         szHome = wxGetenv(wxT("HOMEDRIVE"));
 408         if ( szHome != NULL )
 409             strDir << szHome;
 410         szHome = wxGetenv(wxT("HOMEPATH"));
 411
 412         if ( szHome != NULL )
 413         {
 414             strDir << szHome;
 415
 416             // the idea is that under NT these variables have default values
 417             // of "%systemdrive%:" and "\\". As we don't want to create our
 418             // config files in the root directory of the system drive, we will
 419             // create it in our program's dir. However, if the user took care
 420             // to set HOMEPATH to something other than "\\", we suppose that he
 421             // knows what he is doing and use the supplied value.
 422             if ( wxStrcmp(szHome, wxT("\\")) == 0 )
 423                 strDir.clear();
 424         }
 425     }
 426
 427     if ( strDir.empty() )
 428     {
 429         // If we have a valid USERPROFILE directory, as is the case in
 430         // Windows NT, 2000 and XP, we should use that as our home directory.
 431         szHome = wxGetenv(wxT("USERPROFILE"));
 432
 433         if ( szHome != NULL )
 434             strDir = szHome;
 435     }
 436
 437     if ( !strDir.empty() )
 438     {
 439         // sometimes the value of HOME may be "%USERPROFILE%", so reexpand the
 440         // value once again, it shouldn't hurt anyhow
 441         strDir = wxExpandEnvVars(strDir);
 442     }
 443     else // fall back to the program directory
 444     {
 445         // extract the directory component of the program file name
 446         wxSplitPath(wxGetFullModuleName(), &strDir, NULL, NULL);
 447     }
 448 #endif  // UNIX/Win
 449
 450     return strDir.c_str();
 451 }
 452
 453 wxChar *wxGetUserHome(const wxString& WXUNUSED(user))
 454 {
 455     // VZ: the old code here never worked for user != "" anyhow! Moreover, it
 456     //     returned sometimes a malloc()'d pointer, sometimes a pointer to a
 457     //     static buffer and sometimes I don't even know what.
 458     static wxString s_home;
 459
 460     return (wxChar *)wxGetHomeDir(&s_home);
 461 }
 462
 463 bool wxGetDiskSpace(const wxString& path, wxLongLong *pTotal, wxLongLong *pFree)
 464 {
 465 #ifdef __WXWINCE__
 466     // TODO-CE
 467     wxUnusedVar(path);
 468     wxUnusedVar(pTotal);
 469     wxUnusedVar(pFree);
 470     return false;
 471 #else
 472     if ( path.empty() )
 473         return false;
 474
 475 // old w32api don't have ULARGE_INTEGER
 476 #if defined(__WIN32__) && \
 477     (!defined(__GNUWIN32__) || wxCHECK_W32API_VERSION( 0, 3 ))
 478     // GetDiskFreeSpaceEx() is not available under original Win95, check for
 479     // it
 480     typedef BOOL (WINAPI *GetDiskFreeSpaceEx_t)(LPCTSTR,
 481                                                 PULARGE_INTEGER,
 482                                                 PULARGE_INTEGER,
 483                                                 PULARGE_INTEGER);
 484
 485     GetDiskFreeSpaceEx_t
 486         pGetDiskFreeSpaceEx = (GetDiskFreeSpaceEx_t)::GetProcAddress
 487                               (
 488                                 ::GetModuleHandle(_T("kernel32.dll")),
 489 #if wxUSE_UNICODE
 490                                 "GetDiskFreeSpaceExW"
 491 #else
 492                                 "GetDiskFreeSpaceExA"
 493 #endif
 494                               );
 495
 496     if ( pGetDiskFreeSpaceEx )
 497     {
 498         ULARGE_INTEGER bytesFree, bytesTotal;
 499
 500         // may pass the path as is, GetDiskFreeSpaceEx() is smart enough
 501         if ( !pGetDiskFreeSpaceEx(path,
 502                                   &bytesFree,
 503                                   &bytesTotal,
 504                                   NULL) )
 505         {
 506             wxLogLastError(_T("GetDiskFreeSpaceEx"));
 507
 508             return false;
 509         }
 510
 511         // ULARGE_INTEGER is a union of a 64 bit value and a struct containing
 512         // two 32 bit fields which may be or may be not named - try to make it
 513         // compile in all cases
 514 #if defined(__BORLANDC__) && !defined(_ANONYMOUS_STRUCT)
 515         #define UL(ul) ul.u
 516 #else // anon union
 517         #define UL(ul) ul
 518 #endif
 519         if ( pTotal )
 520         {
 521             *pTotal = wxLongLong(UL(bytesTotal).HighPart, UL(bytesTotal).LowPart);
 522         }
 523
 524         if ( pFree )
 525         {
 526             *pFree = wxLongLong(UL(bytesFree).HighPart, UL(bytesFree).LowPart);
 527         }
 528     }
 529     else
 530 #endif // Win32
 531     {
 532         // there's a problem with drives larger than 2GB, GetDiskFreeSpaceEx()
 533         // should be used instead - but if it's not available, fall back on
 534         // GetDiskFreeSpace() nevertheless...
 535
 536         DWORD lSectorsPerCluster,
 537               lBytesPerSector,
 538               lNumberOfFreeClusters,
 539               lTotalNumberOfClusters;
 540
 541         // FIXME: this is wrong, we should extract the root drive from path
 542         //        instead, but this is the job for wxFileName...
 543         if ( !::GetDiskFreeSpace(path,
 544                                  &lSectorsPerCluster,
 545                                  &lBytesPerSector,
 546                                  &lNumberOfFreeClusters,
 547                                  &lTotalNumberOfClusters) )
 548         {
 549             wxLogLastError(_T("GetDiskFreeSpace"));
 550
 551             return false;
 552         }
 553
 554         wxLongLong lBytesPerCluster = lSectorsPerCluster;
 555         lBytesPerCluster *= lBytesPerSector;
 556
 557         if ( pTotal )
 558         {
 559             *pTotal = lBytesPerCluster;
 560             *pTotal *= lTotalNumberOfClusters;
 561         }
 562
 563         if ( pFree )
 564         {
 565             *pFree = lBytesPerCluster;
 566             *pFree *= lNumberOfFreeClusters;
 567         }
 568     }
 569
 570     return true;
 571 #endif
 572     // __WXWINCE__
 573 }
 574
 575 // ----------------------------------------------------------------------------
 576 // env vars
 577 // ----------------------------------------------------------------------------
 578
 579 bool wxGetEnv(const wxString& var, wxString *value)
 580 {
 581 #ifdef __WXWINCE__
 582     // no environment variables under CE
 583     wxUnusedVar(var);
 584     wxUnusedVar(value);
 585     return false;
 586 #else // Win32
 587     // first get the size of the buffer
 588     DWORD dwRet = ::GetEnvironmentVariable(var, NULL, 0);
 589     if ( !dwRet )
 590     {
 591         // this means that there is no such variable
 592         return false;
 593     }
 594
 595     if ( value )
 596     {
 597         (void)::GetEnvironmentVariable(var, wxStringBuffer(*value, dwRet),
 598                                        dwRet);
 599     }
 600
 601     return true;
 602 #endif // WinCE/32
 603 }
 604
 605 bool wxSetEnv(const wxString& var, const wxChar *value)
 606 {
 607     // some compilers have putenv() or _putenv() or _wputenv() but it's better
 608     // to always use Win32 function directly instead of dealing with them
 609 #if defined(__WIN32__) && !defined(__WXWINCE__)
 610     if ( !::SetEnvironmentVariable(var, value) )
 611     {
 612         wxLogLastError(_T("SetEnvironmentVariable"));
 613
 614         return false;
 615     }
 616
 617     return true;
 618 #else // no way to set env vars
 619     // no environment variables under CE
 620     wxUnusedVar(var);
 621     wxUnusedVar(value);
 622     return false;
 623 #endif
 624 }
 625
 626 // ----------------------------------------------------------------------------
 627 // process management
 628 // ----------------------------------------------------------------------------
 629
 630 // structure used to pass parameters from wxKill() to wxEnumFindByPidProc()
 631 struct wxFindByPidParams
 632 {
 633     wxFindByPidParams() { hwnd = 0; pid = 0; }
 634
 635     // the HWND used to return the result
 636     HWND hwnd;
 637
 638     // the PID we're looking from
 639     DWORD pid;
 640
 641     DECLARE_NO_COPY_CLASS(wxFindByPidParams)
 642 };
 643
 644 // wxKill helper: EnumWindows() callback which is used to find the first (top
 645 // level) window belonging to the given process
 646 BOOL CALLBACK wxEnumFindByPidProc(HWND hwnd, LPARAM lParam)
 647 {
 648     DWORD pid;
 649     (void)::GetWindowThreadProcessId(hwnd, &pid);
 650
 651     wxFindByPidParams *params = (wxFindByPidParams *)lParam;
 652     if ( pid == params->pid )
 653     {
 654         // remember the window we found
 655         params->hwnd = hwnd;
 656
 657         // return FALSE to stop the enumeration
 658         return FALSE;
 659     }
 660
 661     // continue enumeration
 662     return TRUE;
 663 }
 664
 665 int wxKillAllChildren(long pid, wxSignal sig, wxKillError *krc);
 666
 667 int wxKill(long pid, wxSignal sig, wxKillError *krc, int flags)
 668 {
 669     if (flags & wxKILL_CHILDREN)
 670         wxKillAllChildren(pid, sig, krc);
 671
 672     // get the process handle to operate on
 673     HANDLE hProcess = ::OpenProcess(SYNCHRONIZE |
 674                                     PROCESS_TERMINATE |
 675                                     PROCESS_QUERY_INFORMATION,
 676                                     FALSE, // not inheritable
 677                                     (DWORD)pid);
 678     if ( hProcess == NULL )
 679     {
 680         if ( krc )
 681         {
 682             if ( ::GetLastError() == ERROR_ACCESS_DENIED )
 683             {
 684                 *krc = wxKILL_ACCESS_DENIED;
 685             }
 686             else
 687             {
 688                 *krc = wxKILL_NO_PROCESS;
 689             }
 690         }
 691
 692         return -1;
 693     }
 694
 695     bool ok = true;
 696     switch ( sig )
 697     {
 698         case wxSIGKILL:
 699             // kill the process forcefully returning -1 as error code
 700             if ( !::TerminateProcess(hProcess, (UINT)-1) )
 701             {
 702                 wxLogSysError(_("Failed to kill process %d"), pid);
 703
 704                 if ( krc )
 705                 {
 706                     // this is not supposed to happen if we could open the
 707                     // process
 708                     *krc = wxKILL_ERROR;
 709                 }
 710
 711                 ok = false;
 712             }
 713             break;
 714
 715         case wxSIGNONE:
 716             // do nothing, we just want to test for process existence
 717             break;
 718
 719         default:
 720             // any other signal means "terminate"
 721             {
 722                 wxFindByPidParams params;
 723                 params.pid = (DWORD)pid;
 724
 725                 // EnumWindows() has nice semantics: it returns 0 if it found
 726                 // something or if an error occured and non zero if it
 727                 // enumerated all the window
 728                 if ( !::EnumWindows(wxEnumFindByPidProc, (LPARAM)&params) )
 729                 {
 730                     // did we find any window?
 731                     if ( params.hwnd )
 732                     {
 733                         // tell the app to close
 734                         //
 735                         // NB: this is the harshest way, the app won't have
 736                         //     opportunity to save any files, for example, but
 737                         //     this is probably what we want here. If not we
 738                         //     can also use SendMesageTimeout(WM_CLOSE)
 739                         if ( !::PostMessage(params.hwnd, WM_QUIT, 0, 0) )
 740                         {
 741                             wxLogLastError(_T("PostMessage(WM_QUIT)"));
 742                         }
 743                     }
 744                     else // it was an error then
 745                     {
 746                         wxLogLastError(_T("EnumWindows"));
 747
 748                         ok = false;
 749                     }
 750                 }
 751                 else // no windows for this PID
 752                 {
 753                     if ( krc )
 754                     {
 755                         *krc = wxKILL_ERROR;
 756                     }
 757
 758                     ok = false;
 759                 }
 760             }
 761     }
 762
 763     // the return code
 764     DWORD rc;
 765
 766     if ( ok )
 767     {
 768         // as we wait for a short time, we can use just WaitForSingleObject()
 769         // and not MsgWaitForMultipleObjects()
 770         switch ( ::WaitForSingleObject(hProcess, 500 /* msec */) )
 771         {
 772             case WAIT_OBJECT_0:
 773                 // process terminated
 774                 if ( !::GetExitCodeProcess(hProcess, &rc) )
 775                 {
 776                     wxLogLastError(_T("GetExitCodeProcess"));
 777                 }
 778                 break;
 779
 780             default:
 781                 wxFAIL_MSG( _T("unexpected WaitForSingleObject() return") );
 782                 // fall through
 783
 784             case WAIT_FAILED:
 785                 wxLogLastError(_T("WaitForSingleObject"));
 786                 // fall through
 787
 788             case WAIT_TIMEOUT:
 789                 if ( krc )
 790                 {
 791                     *krc = wxKILL_ERROR;
 792                 }
 793
 794                 rc = STILL_ACTIVE;
 795                 break;
 796         }
 797     }
 798     else // !ok
 799     {
 800         // just to suppress the warnings about uninitialized variable
 801         rc = 0;
 802     }
 803
 804     ::CloseHandle(hProcess);
 805
 806     // the return code is the same as from Unix kill(): 0 if killed
 807     // successfully or -1 on error
 808     //
 809     // be careful to interpret rc correctly: for wxSIGNONE we return success if
 810     // the process exists, for all the other sig values -- if it doesn't
 811     if ( ok &&
 812             ((sig == wxSIGNONE) == (rc == STILL_ACTIVE)) )
 813     {
 814         if ( krc )
 815         {
 816             *krc = wxKILL_OK;
 817         }
 818
 819         return 0;
 820     }
 821
 822     // error
 823     return -1;
 824 }
 825
 826 HANDLE (WINAPI *lpfCreateToolhelp32Snapshot)(DWORD,DWORD) ;
 827 BOOL (WINAPI *lpfProcess32First)(HANDLE,LPPROCESSENTRY32) ;
 828 BOOL (WINAPI *lpfProcess32Next)(HANDLE,LPPROCESSENTRY32) ;
 829
 830 static void InitToolHelp32()
 831 {
 832     static bool s_initToolHelpDone = false;
 833
 834     if (s_initToolHelpDone)
 835         return;
 836
 837     s_initToolHelpDone = true;
 838
 839     lpfCreateToolhelp32Snapshot = NULL;
 840     lpfProcess32First = NULL;
 841     lpfProcess32Next = NULL;
 842
 843     HINSTANCE hInstLib = LoadLibrary( wxT("Kernel32.DLL") ) ;
 844     if( hInstLib == NULL )
 845         return ;
 846
 847     // Get procedure addresses.
 848     // We are linking to these functions of Kernel32
 849     // explicitly, because otherwise a module using
 850     // this code would fail to load under Windows NT,
 851     // which does not have the Toolhelp32
 852     // functions in the Kernel 32.
 853     lpfCreateToolhelp32Snapshot=
 854         (HANDLE(WINAPI *)(DWORD,DWORD))
 855         GetProcAddress( hInstLib,
 856 #ifdef __WXWINCE__
 857         wxT("CreateToolhelp32Snapshot")
 858 #else
 859         "CreateToolhelp32Snapshot"
 860 #endif
 861         ) ;
 862
 863     lpfProcess32First=
 864         (BOOL(WINAPI *)(HANDLE,LPPROCESSENTRY32))
 865         GetProcAddress( hInstLib,
 866 #ifdef __WXWINCE__
 867         wxT("Process32First")
 868 #else
 869         "Process32First"
 870 #endif
 871         ) ;
 872
 873     lpfProcess32Next=
 874         (BOOL(WINAPI *)(HANDLE,LPPROCESSENTRY32))
 875         GetProcAddress( hInstLib,
 876 #ifdef __WXWINCE__
 877         wxT("Process32Next")
 878 #else
 879         "Process32Next"
 880 #endif
 881         ) ;
 882
 883     FreeLibrary( hInstLib ) ;
 884 }
 885
 886 // By John Skiff
 887 int wxKillAllChildren(long pid, wxSignal sig, wxKillError *krc)
 888 {
 889     InitToolHelp32();
 890
 891     if (krc)
 892         *krc = wxKILL_OK;
 893
 894     // If not implemented for this platform (e.g. NT 4.0), silently ignore
 895     if (!lpfCreateToolhelp32Snapshot || !lpfProcess32First || !lpfProcess32Next)
 896         return 0;
 897
 898     // Take a snapshot of all processes in the system.
 899     HANDLE hProcessSnap = lpfCreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
 900     if (hProcessSnap == INVALID_HANDLE_VALUE) {
 901         if (krc)
 902             *krc = wxKILL_ERROR;
 903         return -1;
 904     }
 905
 906     //Fill in the size of the structure before using it.
 907     PROCESSENTRY32 pe;
 908     wxZeroMemory(pe);
 909     pe.dwSize = sizeof(PROCESSENTRY32);
 910
 911     // Walk the snapshot of the processes, and for each process,
 912     // kill it if its parent is pid.
 913     if (!lpfProcess32First(hProcessSnap, &pe)) {
 914         // Can't get first process.
 915         if (krc)
 916             *krc = wxKILL_ERROR;
 917         CloseHandle (hProcessSnap);
 918         return -1;
 919     }
 920
 921     do {
 922         if (pe.th32ParentProcessID == (DWORD) pid) {
 923             if (wxKill(pe.th32ProcessID, sig, krc))
 924                 return -1;
 925         }
 926     } while (lpfProcess32Next (hProcessSnap, &pe));
 927
 928
 929     return 0;
 930 }
 931
 932 // Execute a program in an Interactive Shell
 933 bool wxShell(const wxString& command)
 934 {
 935     wxString cmd;
 936
 937 #ifdef __WXWINCE__
 938     cmd = command;
 939 #else
 940     wxChar *shell = wxGetenv(wxT("COMSPEC"));
 941     if ( !shell )
 942         shell = (wxChar*) wxT("\\COMMAND.COM");
 943
 944     if ( !command )
 945     {
 946         // just the shell
 947         cmd = shell;
 948     }
 949     else
 950     {
 951         // pass the command to execute to the command processor
 952         cmd.Printf(wxT("%s /c %s"), shell, command.c_str());
 953     }
 954 #endif
 955
 956     return wxExecute(cmd, wxEXEC_SYNC) == 0;
 957 }
 958
 959 // Shutdown or reboot the PC
 960 bool wxShutdown(wxShutdownFlags wFlags)
 961 {
 962 #ifdef __WXWINCE__
 963     // TODO-CE
 964     wxUnusedVar(wFlags);
 965     return false;
 966 #elif defined(__WIN32__)
 967     bool bOK = true;
 968
 969     if ( wxGetOsVersion(NULL, NULL) == wxWINDOWS_NT ) // if is NT or 2K
 970     {
 971         // Get a token for this process.
 972         HANDLE hToken;
 973         bOK = ::OpenProcessToken(GetCurrentProcess(),
 974                                  TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY,
 975                                  &hToken) != 0;
 976         if ( bOK )
 977         {
 978             TOKEN_PRIVILEGES tkp;
 979
 980             // Get the LUID for the shutdown privilege.
 981             ::LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,
 982                                    &tkp.Privileges[0].Luid);
 983
 984             tkp.PrivilegeCount = 1;  // one privilege to set
 985             tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
 986
 987             // Get the shutdown privilege for this process.
 988             ::AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,
 989                                     (PTOKEN_PRIVILEGES)NULL, 0);
 990
 991             // Cannot test the return value of AdjustTokenPrivileges.
 992             bOK = ::GetLastError() == ERROR_SUCCESS;
 993         }
 994     }
 995
 996     if ( bOK )
 997     {
 998         UINT flags = EWX_SHUTDOWN | EWX_FORCE;
 999         switch ( wFlags )
1000         {
1001             case wxSHUTDOWN_POWEROFF:
1002                 flags |= EWX_POWEROFF;
1003                 break;
1004
1005             case wxSHUTDOWN_REBOOT:
1006                 flags |= EWX_REBOOT;
1007                 break;
1008
1009             default:
1010                 wxFAIL_MSG( _T("unknown wxShutdown() flag") );
1011                 return false;
1012         }
1013
1014         bOK = ::ExitWindowsEx(flags, 0) != 0;
1015     }
1016
1017     return bOK;
1018 #endif // Win32/16
1019 }
1020
1021 wxPowerType wxGetPowerType()
1022 {
1023     // TODO
1024     return wxPOWER_UNKNOWN;
1025 }
1026
1027 wxBatteryState wxGetBatteryState()
1028 {
1029     // TODO
1030     return wxBATTERY_UNKNOWN_STATE;
1031 }
1032
1033 // ----------------------------------------------------------------------------
1034 // misc
1035 // ----------------------------------------------------------------------------
1036
1037 // Get free memory in bytes, or -1 if cannot determine amount (e.g. on UNIX)
1038 wxMemorySize wxGetFreeMemory()
1039 {
1040 #if defined(__WIN64__)
1041     MEMORYSTATUSEX memStatex;
1042     statex.dwLength = sizeof (statex);
1043     ::GlobalMemoryStatusEx (&statex);
1044     return (wxMemorySize)memStatus.ullAvailPhys;
1045 #else /* if defined(__WIN32__) */
1046     MEMORYSTATUS memStatus;
1047     memStatus.dwLength = sizeof(MEMORYSTATUS);
1048     ::GlobalMemoryStatus(&memStatus);
1049     return (wxMemorySize)memStatus.dwAvailPhys;
1050 #endif
1051 }
1052
1053 unsigned long wxGetProcessId()
1054 {
1055     return ::GetCurrentProcessId();
1056 }
1057
1058 // Emit a beeeeeep
1059 void wxBell()
1060 {
1061     ::MessageBeep((UINT)-1);        // default sound
1062 }
1063
1064 bool wxIsDebuggerRunning()
1065 {
1066     // IsDebuggerPresent() is not available under Win95, so load it dynamically
1067     wxDynamicLibrary dll(_T("kernel32.dll"), wxDL_VERBATIM);
1068
1069     typedef BOOL (WINAPI *IsDebuggerPresent_t)();
1070     if ( !dll.HasSymbol(_T("IsDebuggerPresent")) )
1071     {
1072         // no way to know, assume no
1073         return false;
1074     }
1075
1076     return (*(IsDebuggerPresent_t)dll.GetSymbol(_T("IsDebuggerPresent")))() != 0;
1077 }
1078
1079 // ----------------------------------------------------------------------------
1080 // OS version
1081 // ----------------------------------------------------------------------------
1082
1083 wxString wxGetOsDescription()
1084 {
1085     wxString str;
1086
1087     OSVERSIONINFO info;
1088     wxZeroMemory(info);
1089
1090     info.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
1091     if ( ::GetVersionEx(&info) )
1092     {
1093         switch ( info.dwPlatformId )
1094         {
1095             case VER_PLATFORM_WIN32s:
1096                 str = _("Win32s on Windows 3.1");
1097                 break;
1098
1099             case VER_PLATFORM_WIN32_WINDOWS:
1100                 switch (info.dwMinorVersion)
1101                 {
1102                     case 0:
1103                         if ( info.szCSDVersion[1] == 'B' ||
1104                              info.szCSDVersion[1] == 'C' )
1105                         {
1106                             str = _("Windows 95 OSR2");
1107                         }
1108                         else
1109                         {
1110                             str = _("Windows 95");
1111                         }
1112                         break;
1113                     case 10:
1114                         if ( info.szCSDVersion[1] == 'B' ||
1115                              info.szCSDVersion[1] == 'C' )
1116                         {
1117                             str = _("Windows 98 SE");
1118                         }
1119                         else
1120                         {
1121                             str = _("Windows 98");
1122                         }
1123                         break;
1124                     case 90:
1125                         str = _("Windows ME");
1126                         break;
1127                     default:
1128                         str.Printf(_("Windows 9x (%d.%d)"),
1129                                    info.dwMajorVersion,
1130                                    info.dwMinorVersion);
1131                         break;
1132                 }
1133                 if ( !wxIsEmpty(info.szCSDVersion) )
1134                 {
1135                     str << _T(" (") << info.szCSDVersion << _T(')');
1136                 }
1137                 break;
1138
1139             case VER_PLATFORM_WIN32_NT:
1140                 if ( info.dwMajorVersion == 5 )
1141                 {
1142                     switch ( info.dwMinorVersion )
1143                     {
1144                         case 0:
1145                             str.Printf(_("Windows 2000 (build %lu"),
1146                                        info.dwBuildNumber);
1147                             break;
1148                         case 1:
1149                             str.Printf(_("Windows XP (build %lu"),
1150                                        info.dwBuildNumber);
1151                             break;
1152                         case 2:
1153                             str.Printf(_("Windows Server 2003 (build %lu"),
1154                                        info.dwBuildNumber);
1155                             break;
1156                     }
1157                 }
1158                 if ( wxIsEmpty(str) )
1159                 {
1160                     str.Printf(_("Windows NT %lu.%lu (build %lu"),
1161                            info.dwMajorVersion,
1162                            info.dwMinorVersion,
1163                            info.dwBuildNumber);
1164                 }
1165                 if ( !wxIsEmpty(info.szCSDVersion) )
1166                 {
1167                     str << _T(", ") << info.szCSDVersion;
1168                 }
1169                 str << _T(')');
1170                 break;
1171         }
1172     }
1173     else
1174     {
1175         wxFAIL_MSG( _T("GetVersionEx() failed") ); // should never happen
1176     }
1177
1178     return str;
1179 }
1180
1181 wxToolkitInfo& wxAppTraits::GetToolkitInfo()
1182 {
1183     // cache the version info, it's not going to change
1184     //
1185     // NB: this is MT-safe, we may use these static vars from different threads
1186     //     but as they always have the same value it doesn't matter
1187     static int s_ver = -1,
1188                s_major = -1,
1189                s_minor = -1;
1190
1191     if ( s_ver == -1 )
1192     {
1193         OSVERSIONINFO info;
1194         wxZeroMemory(info);
1195
1196         s_ver = wxWINDOWS;
1197         info.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
1198         if ( ::GetVersionEx(&info) )
1199         {
1200             s_major = info.dwMajorVersion;
1201             s_minor = info.dwMinorVersion;
1202
1203 #ifdef __SMARTPHONE__
1204             s_ver = wxWINDOWS_SMARTPHONE;
1205 #elif defined(__POCKETPC__)
1206             s_ver = wxWINDOWS_POCKETPC;
1207 #else
1208             switch ( info.dwPlatformId )
1209             {
1210                 case VER_PLATFORM_WIN32s:
1211                     s_ver = wxWIN32S;
1212                     break;
1213
1214                 case VER_PLATFORM_WIN32_WINDOWS:
1215                     s_ver = wxWIN95;
1216                     break;
1217
1218                 case VER_PLATFORM_WIN32_NT:
1219                     s_ver = wxWINDOWS_NT;
1220                     break;
1221 #ifdef __WXWINCE__
1222                 case VER_PLATFORM_WIN32_CE:
1223                     s_ver = wxWINDOWS_CE;
1224 #endif
1225             }
1226 #endif
1227         }
1228     }
1229
1230     static wxToolkitInfo info;
1231     info.versionMajor = s_major;
1232     info.versionMinor = s_minor;
1233     info.os = s_ver;
1234     info.name = _T("wxBase");
1235     return info;
1236 }
1237
1238 // ----------------------------------------------------------------------------
1239 // sleep functions
1240 // ----------------------------------------------------------------------------
1241
1242 void wxMilliSleep(unsigned long milliseconds)
1243 {
1244     ::Sleep(milliseconds);
1245 }
1246
1247 void wxMicroSleep(unsigned long microseconds)
1248 {
1249     wxMilliSleep(microseconds/1000);
1250 }
1251
1252 void wxSleep(int nSecs)
1253 {
1254     wxMilliSleep(1000*nSecs);
1255 }
1256
1257 // ----------------------------------------------------------------------------
1258 // font encoding <-> Win32 codepage conversion functions
1259 // ----------------------------------------------------------------------------
1260
1261 extern WXDLLIMPEXP_BASE long wxEncodingToCharset(wxFontEncoding encoding)
1262 {
1263     switch ( encoding )
1264     {
1265         // although this function is supposed to return an exact match, do do
1266         // some mappings here for the most common case of "standard" encoding
1267         case wxFONTENCODING_SYSTEM:
1268             return DEFAULT_CHARSET;
1269
1270         case wxFONTENCODING_ISO8859_1:
1271         case wxFONTENCODING_ISO8859_15:
1272         case wxFONTENCODING_CP1252:
1273             return ANSI_CHARSET;
1274
1275 #if !defined(__WXMICROWIN__)
1276         // The following four fonts are multi-byte charsets
1277         case wxFONTENCODING_CP932:
1278             return SHIFTJIS_CHARSET;
1279
1280         case wxFONTENCODING_CP936:
1281             return GB2312_CHARSET;
1282
1283         case wxFONTENCODING_CP949:
1284             return HANGUL_CHARSET;
1285
1286         case wxFONTENCODING_CP950:
1287             return CHINESEBIG5_CHARSET;
1288
1289         // The rest are single byte encodings
1290         case wxFONTENCODING_CP1250:
1291             return EASTEUROPE_CHARSET;
1292
1293         case wxFONTENCODING_CP1251:
1294             return RUSSIAN_CHARSET;
1295
1296         case wxFONTENCODING_CP1253:
1297             return GREEK_CHARSET;
1298
1299         case wxFONTENCODING_CP1254:
1300             return TURKISH_CHARSET;
1301
1302         case wxFONTENCODING_CP1255:
1303             return HEBREW_CHARSET;
1304
1305         case wxFONTENCODING_CP1256:
1306             return ARABIC_CHARSET;
1307
1308         case wxFONTENCODING_CP1257:
1309             return BALTIC_CHARSET;
1310
1311         case wxFONTENCODING_CP874:
1312             return THAI_CHARSET;
1313 #endif // !__WXMICROWIN__
1314
1315         case wxFONTENCODING_CP437:
1316             return OEM_CHARSET;
1317
1318         default:
1319             // no way to translate this encoding into a Windows charset
1320             return -1;
1321     }
1322 }
1323
1324 // we have 2 versions of wxCharsetToCodepage(): the old one which directly
1325 // looks up the vlaues in the registry and the new one which is more
1326 // politically correct and has more chances to work on other Windows versions
1327 // as well but the old version is still needed for !wxUSE_FONTMAP case
1328 #if wxUSE_FONTMAP
1329
1330 #include "wx/fontmap.h"
1331
1332 extern WXDLLIMPEXP_BASE long wxEncodingToCodepage(wxFontEncoding encoding)
1333 {
1334     // There don't seem to be symbolic names for
1335     // these under Windows so I just copied the
1336     // values from MSDN.
1337
1338     unsigned int ret;
1339
1340     switch (encoding)
1341     {
1342         case wxFONTENCODING_ISO8859_1:      ret = 28591; break;
1343         case wxFONTENCODING_ISO8859_2:      ret = 28592; break;
1344         case wxFONTENCODING_ISO8859_3:      ret = 28593; break;
1345         case wxFONTENCODING_ISO8859_4:      ret = 28594; break;
1346         case wxFONTENCODING_ISO8859_5:      ret = 28595; break;
1347         case wxFONTENCODING_ISO8859_6:      ret = 28596; break;
1348         case wxFONTENCODING_ISO8859_7:      ret = 28597; break;
1349         case wxFONTENCODING_ISO8859_8:      ret = 28598; break;
1350         case wxFONTENCODING_ISO8859_9:      ret = 28599; break;
1351         case wxFONTENCODING_ISO8859_10:     ret = 28600; break;
1352         case wxFONTENCODING_ISO8859_11:     ret = 28601; break;
1353         // case wxFONTENCODING_ISO8859_12,      // doesn't exist currently, but put it
1354         case wxFONTENCODING_ISO8859_13:     ret = 28603; break;
1355         case wxFONTENCODING_ISO8859_14:     ret = 28604; break;
1356         case wxFONTENCODING_ISO8859_15:     ret = 28605; break;
1357         case wxFONTENCODING_KOI8:           ret = 20866; break;
1358         case wxFONTENCODING_KOI8_U:         ret = 21866; break;
1359         case wxFONTENCODING_CP437:          ret = 437; break;
1360         case wxFONTENCODING_CP850:          ret = 850; break;
1361         case wxFONTENCODING_CP852:          ret = 852; break;
1362         case wxFONTENCODING_CP855:          ret = 855; break;
1363         case wxFONTENCODING_CP866:          ret = 866; break;
1364         case wxFONTENCODING_CP874:          ret = 874; break;
1365         case wxFONTENCODING_CP932:          ret = 932; break;
1366         case wxFONTENCODING_CP936:          ret = 936; break;
1367         case wxFONTENCODING_CP949:          ret = 949; break;
1368         case wxFONTENCODING_CP950:          ret = 950; break;
1369         case wxFONTENCODING_CP1250:         ret = 1250; break;
1370         case wxFONTENCODING_CP1251:         ret = 1251; break;
1371         case wxFONTENCODING_CP1252:         ret = 1252; break;
1372         case wxFONTENCODING_CP1253:         ret = 1253; break;
1373         case wxFONTENCODING_CP1254:         ret = 1254; break;
1374         case wxFONTENCODING_CP1255:         ret = 1255; break;
1375         case wxFONTENCODING_CP1256:         ret = 1256; break;
1376         case wxFONTENCODING_CP1257:         ret = 1257; break;
1377         case wxFONTENCODING_EUC_JP:         ret = 51932; break;
1378         case wxFONTENCODING_MACROMAN:       ret = 10000; break;
1379         case wxFONTENCODING_MACJAPANESE:    ret = 10001; break;
1380         case wxFONTENCODING_MACCHINESETRAD: ret = 10002; break;
1381         case wxFONTENCODING_MACKOREAN:      ret = 10003; break;
1382         case wxFONTENCODING_MACARABIC:      ret = 10004; break;
1383         case wxFONTENCODING_MACHEBREW:      ret = 10005; break;
1384         case wxFONTENCODING_MACGREEK:       ret = 10006; break;
1385         case wxFONTENCODING_MACCYRILLIC:    ret = 10007; break;
1386         case wxFONTENCODING_MACTHAI:        ret = 10021; break;
1387         case wxFONTENCODING_MACCHINESESIMP: ret = 10008; break;
1388         case wxFONTENCODING_MACCENTRALEUR:  ret = 10029; break;
1389         case wxFONTENCODING_MACCROATIAN:    ret = 10082; break;
1390         case wxFONTENCODING_MACICELANDIC:   ret = 10079; break;
1391         case wxFONTENCODING_MACROMANIAN:    ret = 10009; break;
1392         case wxFONTENCODING_UTF7:           ret = 65000; break;
1393         case wxFONTENCODING_UTF8:           ret = 65001; break;
1394         default:                            return -1;
1395     }
1396
1397     if (::IsValidCodePage(ret) == 0)
1398         return -1;
1399
1400     CPINFO info;
1401     if (::GetCPInfo(ret, &info) == 0)
1402         return -1;
1403
1404     return (long) ret;
1405 }
1406
1407 extern long wxCharsetToCodepage(const wxChar *name)
1408 {
1409     // first get the font encoding for this charset
1410     if ( !name )
1411         return -1;
1412
1413     wxFontEncoding enc = wxFontMapperBase::Get()->CharsetToEncoding(name, false);
1414     if ( enc == wxFONTENCODING_SYSTEM )
1415         return -1;
1416
1417     // the use the helper function
1418     return wxEncodingToCodepage(enc);
1419 }
1420
1421 #else // !wxUSE_FONTMAP
1422
1423 #include "wx/msw/registry.h"
1424
1425 // this should work if Internet Exploiter is installed
1426 extern long wxCharsetToCodepage(const wxChar *name)
1427 {
1428     if (!name)
1429         return GetACP();
1430
1431     long CP = -1;
1432
1433     wxString path(wxT("MIME\\Database\\Charset\\"));
1434     wxString cn(name);
1435
1436     // follow the alias loop
1437     for ( ;; )
1438     {
1439         wxRegKey key(wxRegKey::HKCR, path + cn);
1440
1441         if (!key.Exists())
1442             break;
1443
1444         // two cases: either there's an AliasForCharset string,
1445         // or there are Codepage and InternetEncoding dwords.
1446         // The InternetEncoding gives us the actual encoding,
1447         // the Codepage just says which Windows character set to
1448         // use when displaying the data.
1449         if (key.HasValue(wxT("InternetEncoding")) &&
1450             key.QueryValue(wxT("InternetEncoding"), &CP))
1451             break;
1452
1453         // no encoding, see if it's an alias
1454         if (!key.HasValue(wxT("AliasForCharset")) ||
1455             !key.QueryValue(wxT("AliasForCharset"), cn))
1456             break;
1457     }
1458
1459     return CP;
1460 }
1461
1462 #endif // wxUSE_FONTMAP/!wxUSE_FONTMAP
1463
1464 /*
1465   Creates a hidden window with supplied window proc registering the class for
1466   it if necesssary (i.e. the first time only). Caller is responsible for
1467   destroying the window and unregistering the class (note that this must be
1468   done because wxWidgets may be used as a DLL and so may be loaded/unloaded
1469   multiple times into/from the same process so we cna't rely on automatic
1470   Windows class unregistration).
1471
1472   pclassname is a pointer to a caller stored classname, which must initially be
1473   NULL. classname is the desired wndclass classname. If function succesfully
1474   registers the class, pclassname will be set to classname.
1475  */
1476 extern "C" WXDLLIMPEXP_BASE HWND
1477 wxCreateHiddenWindow(LPCTSTR *pclassname, LPCTSTR classname, WNDPROC wndproc)
1478 {
1479     wxCHECK_MSG( classname && pclassname && wndproc, NULL,
1480                     _T("NULL parameter in wxCreateHiddenWindow") );
1481
1482     // register the class fi we need to first
1483     if ( *pclassname == NULL )
1484     {
1485         WNDCLASS wndclass;
1486         wxZeroMemory(wndclass);
1487
1488         wndclass.lpfnWndProc   = wndproc;
1489         wndclass.hInstance     = wxGetInstance();
1490         wndclass.lpszClassName = classname;
1491
1492         if ( !::RegisterClass(&wndclass) )
1493         {
1494             wxLogLastError(wxT("RegisterClass() in wxCreateHiddenWindow"));
1495
1496             return NULL;
1497         }
1498
1499         *pclassname = classname;
1500     }
1501
1502     // next create the window
1503     HWND hwnd = ::CreateWindow
1504                   (
1505                     *pclassname,
1506                     NULL,
1507                     0, 0, 0, 0,
1508                     0,
1509                     (HWND) NULL,
1510                     (HMENU)NULL,
1511                     wxGetInstance(),
1512                     (LPVOID) NULL
1513                   );
1514
1515     if ( !hwnd )
1516     {
1517         wxLogLastError(wxT("CreateWindow() in wxCreateHiddenWindow"));
1518     }
1519
1520     return hwnd;
1521 }
1522