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/dynload.h"
  36
  37 #include "wx/msw/private.h"     // includes <windows.h>
  38 #include "wx/msw/missing.h"     // CHARSET_HANGUL
  39
  40 #if defined(__GNUWIN32_OLD__) || defined(__WXWINCE__)
  41     // apparently we need to include winsock.h to get WSADATA and other stuff
  42     // used in wxGetFullHostName() with the old mingw32 versions
  43     #include <winsock.h>
  44 #endif
  45
  46 #include "wx/timer.h"
  47
  48 #if !defined(__GNUWIN32__) && !defined(__SALFORDC__) && !defined(__WXMICROWIN__) && !defined(__WXWINCE__)
  49     #include <direct.h>
  50
  51     #ifndef __MWERKS__
  52         #include <dos.h>
  53     #endif
  54 #endif  //GNUWIN32
  55
  56 #if defined(__CYGWIN__)
  57     #include <sys/unistd.h>
  58     #include <sys/stat.h>
  59     #include <sys/cygwin.h> // for cygwin_conv_to_full_win32_path()
  60 #endif  //GNUWIN32
  61
  62 #ifdef __BORLANDC__ // Please someone tell me which version of Borland needs
  63                     // this (3.1 I believe) and how to test for it.
  64                     // If this works for Borland 4.0 as well, then no worries.
  65     #include <dir.h>
  66 #endif
  67
  68 // VZ: there is some code using NetXXX() functions to get the full user name:
  69 //     I don't think it's a good idea because they don't work under Win95 and
  70 //     seem to return the same as wxGetUserId() under NT. If you really want
  71 //     to use them, just #define USE_NET_API
  72 #undef USE_NET_API
  73
  74 #ifdef USE_NET_API
  75     #include <lm.h>
  76 #endif // USE_NET_API
  77
  78 #if defined(__WIN32__) && !defined(__WXMICROWIN__) && !defined(__WXWINCE__)
  79     #ifndef __UNIX__
  80         #include <io.h>
  81     #endif
  82
  83     #ifndef __GNUWIN32__
  84         #include <shellapi.h>
  85     #endif
  86 #endif
  87
  88 #ifndef __WATCOMC__
  89     #if !(defined(_MSC_VER) && (_MSC_VER > 800))
  90         #include <errno.h>
  91     #endif
  92 #endif
  93
  94 // ----------------------------------------------------------------------------
  95 // constants
  96 // ----------------------------------------------------------------------------
  97
  98 // In the WIN.INI file
  99 static const wxChar WX_SECTION[] = wxT("wxWindows");
 100 static const wxChar eUSERNAME[]  = wxT("UserName");
 101
 102 // these are only used under Win16
 103 #if !defined(__WIN32__) && !defined(__WXMICROWIN__)
 104 static const wxChar eHOSTNAME[]  = wxT("HostName");
 105 static const wxChar eUSERID[]    = wxT("UserId");
 106 #endif // !Win32
 107
 108 // ============================================================================
 109 // implementation
 110 // ============================================================================
 111
 112 // ----------------------------------------------------------------------------
 113 // get host name and related
 114 // ----------------------------------------------------------------------------
 115
 116 // Get hostname only (without domain name)
 117 bool wxGetHostName(wxChar *buf, int maxSize)
 118 {
 119 #if defined(__WXWINCE__)
 120     return FALSE;
 121 #elif defined(__WIN32__) && !defined(__WXMICROWIN__)
 122     DWORD nSize = maxSize;
 123     if ( !::GetComputerName(buf, &nSize) )
 124     {
 125         wxLogLastError(wxT("GetComputerName"));
 126
 127         return FALSE;
 128     }
 129
 130     return TRUE;
 131 #else
 132     wxChar *sysname;
 133     const wxChar *default_host = wxT("noname");
 134
 135     if ((sysname = wxGetenv(wxT("SYSTEM_NAME"))) == NULL) {
 136         GetProfileString(WX_SECTION, eHOSTNAME, default_host, buf, maxSize - 1);
 137     } else
 138         wxStrncpy(buf, sysname, maxSize - 1);
 139     buf[maxSize] = wxT('\0');
 140     return *buf ? TRUE : FALSE;
 141 #endif
 142 }
 143
 144 // get full hostname (with domain name if possible)
 145 bool wxGetFullHostName(wxChar *buf, int maxSize)
 146 {
 147 #ifndef __WXMICROWIN__
 148     // TODO should use GetComputerNameEx() when available
 149
 150     // we don't want to always link with Winsock DLL as we might not use it at
 151     // all, so load it dynamically here if needed
 152     wxDynamicLibrary dllWinsock(_T("ws2_32.dll"), wxDL_VERBATIM);
 153     if ( dllWinsock.IsLoaded() )
 154     {
 155         typedef int (PASCAL *WSAStartup_t)(WORD, WSADATA *);
 156         typedef int (PASCAL *gethostname_t)(char *, int);
 157         typedef hostent* (PASCAL *gethostbyname_t)(const char *);
 158         typedef hostent* (PASCAL *gethostbyaddr_t)(const char *, int , int);
 159         typedef int (PASCAL *WSACleanup_t)(void);
 160
 161         #define LOAD_WINSOCK_FUNC(func)                                       \
 162             func ## _t                                                        \
 163                 pfn ## func = (func ## _t)dllWinsock.GetSymbol(_T(#func))
 164
 165         LOAD_WINSOCK_FUNC(WSAStartup);
 166
 167         WSADATA wsa;
 168         if ( pfnWSAStartup && pfnWSAStartup(MAKEWORD(1, 1), &wsa) == 0 )
 169         {
 170             LOAD_WINSOCK_FUNC(gethostname);
 171
 172             wxString host;
 173             if ( pfngethostname )
 174             {
 175                 char bufA[256];
 176                 if ( pfngethostname(bufA, WXSIZEOF(bufA)) == 0 )
 177                 {
 178                     // gethostname() won't usually include the DNS domain name,
 179                     // for this we need to work a bit more
 180                     if ( !strchr(bufA, '.') )
 181                     {
 182                         LOAD_WINSOCK_FUNC(gethostbyname);
 183
 184                         struct hostent *pHostEnt = pfngethostbyname
 185                                                     ? pfngethostbyname(bufA)
 186                                                     : NULL;
 187
 188                         if ( pHostEnt )
 189                         {
 190                             // Windows will use DNS internally now
 191                             LOAD_WINSOCK_FUNC(gethostbyaddr);
 192
 193                             pHostEnt = pfngethostbyaddr
 194                                         ? pfngethostbyaddr(pHostEnt->h_addr,
 195                                                            4, AF_INET)
 196                                         : NULL;
 197                         }
 198
 199                         if ( pHostEnt )
 200                         {
 201                             host = wxString::FromAscii(pHostEnt->h_name);
 202                         }
 203                     }
 204                 }
 205             }
 206
 207             LOAD_WINSOCK_FUNC(WSACleanup);
 208             if ( pfnWSACleanup )
 209                 pfnWSACleanup();
 210
 211
 212             if ( !host.empty() )
 213             {
 214                 wxStrncpy(buf, host, maxSize);
 215
 216                 return TRUE;
 217             }
 218         }
 219     }
 220 #endif // !__WXMICROWIN__
 221
 222     return wxGetHostName(buf, maxSize);
 223 }
 224
 225 // Get user ID e.g. jacs
 226 bool wxGetUserId(wxChar *buf, int maxSize)
 227 {
 228 #if defined(__WXWINCE__)
 229     return FALSE;
 230 #elif defined(__WIN32__) && !defined(__win32s__) && !defined(__WXMICROWIN__)
 231     DWORD nSize = maxSize;
 232     if ( ::GetUserName(buf, &nSize) == 0 )
 233     {
 234         // actually, it does happen on Win9x if the user didn't log on
 235         DWORD res = ::GetEnvironmentVariable(wxT("username"), buf, maxSize);
 236         if ( res == 0 )
 237         {
 238             // not found
 239             return FALSE;
 240         }
 241     }
 242
 243     return TRUE;
 244 #else   // Win16 or Win32s
 245     wxChar *user;
 246     const wxChar *default_id = wxT("anonymous");
 247
 248     // Can't assume we have NIS (PC-NFS) or some other ID daemon
 249     // So we ...
 250     if (  (user = wxGetenv(wxT("USER"))) == NULL &&
 251             (user = wxGetenv(wxT("LOGNAME"))) == NULL )
 252     {
 253         // Use wxWindows configuration data (comming soon)
 254         GetProfileString(WX_SECTION, eUSERID, default_id, buf, maxSize - 1);
 255     }
 256     else
 257     {
 258         wxStrncpy(buf, user, maxSize - 1);
 259     }
 260
 261     return *buf ? TRUE : FALSE;
 262 #endif
 263 }
 264
 265 // Get user name e.g. Julian Smart
 266 bool wxGetUserName(wxChar *buf, int maxSize)
 267 {
 268 #if defined(__WXWINCE__)
 269     return FALSE;
 270 #elif defined(USE_NET_API)
 271     CHAR szUserName[256];
 272     if ( !wxGetUserId(szUserName, WXSIZEOF(szUserName)) )
 273         return FALSE;
 274
 275     // TODO how to get the domain name?
 276     CHAR *szDomain = "";
 277
 278     // the code is based on the MSDN example (also see KB article Q119670)
 279     WCHAR wszUserName[256];          // Unicode user name
 280     WCHAR wszDomain[256];
 281     LPBYTE ComputerName;
 282
 283     USER_INFO_2 *ui2;         // User structure
 284
 285     // Convert ANSI user name and domain to Unicode
 286     MultiByteToWideChar( CP_ACP, 0, szUserName, strlen(szUserName)+1,
 287             wszUserName, WXSIZEOF(wszUserName) );
 288     MultiByteToWideChar( CP_ACP, 0, szDomain, strlen(szDomain)+1,
 289             wszDomain, WXSIZEOF(wszDomain) );
 290
 291     // Get the computer name of a DC for the domain.
 292     if ( NetGetDCName( NULL, wszDomain, &ComputerName ) != NERR_Success )
 293     {
 294         wxLogError(wxT("Can not find domain controller"));
 295
 296         goto error;
 297     }
 298
 299     // Look up the user on the DC
 300     NET_API_STATUS status = NetUserGetInfo( (LPWSTR)ComputerName,
 301             (LPWSTR)&wszUserName,
 302             2, // level - we want USER_INFO_2
 303             (LPBYTE *) &ui2 );
 304     switch ( status )
 305     {
 306         case NERR_Success:
 307             // ok
 308             break;
 309
 310         case NERR_InvalidComputer:
 311             wxLogError(wxT("Invalid domain controller name."));
 312
 313             goto error;
 314
 315         case NERR_UserNotFound:
 316             wxLogError(wxT("Invalid user name '%s'."), szUserName);
 317
 318             goto error;
 319
 320         default:
 321             wxLogSysError(wxT("Can't get information about user"));
 322
 323             goto error;
 324     }
 325
 326     // Convert the Unicode full name to ANSI
 327     WideCharToMultiByte( CP_ACP, 0, ui2->usri2_full_name, -1,
 328             buf, maxSize, NULL, NULL );
 329
 330     return TRUE;
 331
 332 error:
 333     wxLogError(wxT("Couldn't look up full user name."));
 334
 335     return FALSE;
 336 #else  // !USE_NET_API
 337     // Could use NIS, MS-Mail or other site specific programs
 338     // Use wxWindows configuration data
 339     bool ok = GetProfileString(WX_SECTION, eUSERNAME, wxEmptyString, buf, maxSize - 1) != 0;
 340     if ( !ok )
 341     {
 342         ok = wxGetUserId(buf, maxSize);
 343     }
 344
 345     if ( !ok )
 346     {
 347         wxStrncpy(buf, wxT("Unknown User"), maxSize);
 348     }
 349 #endif // Win32/16
 350
 351     return TRUE;
 352 }
 353
 354 const wxChar* wxGetHomeDir(wxString *pstr)
 355 {
 356   wxString& strDir = *pstr;
 357
 358 #if defined(__UNIX__)
 359     const wxChar *szHome = wxGetenv("HOME");
 360     if ( szHome == NULL ) {
 361       // we're homeless...
 362       wxLogWarning(_("can't find user's HOME, using current directory."));
 363       strDir = wxT(".");
 364     }
 365     else
 366        strDir = szHome;
 367
 368     // add a trailing slash if needed
 369     if ( strDir.Last() != wxT('/') )
 370       strDir << wxT('/');
 371
 372     #ifdef __CYGWIN__
 373       // Cygwin returns unix type path but that does not work well
 374       static wxChar windowsPath[MAX_PATH];
 375       cygwin_conv_to_full_win32_path(strDir, windowsPath);
 376       strDir = windowsPath;
 377     #endif
 378 #elif defined(__WXWINCE__)
 379       // Nothing
 380 #else
 381     #ifdef  __WIN32__
 382       strDir.clear();
 383
 384       // If we have a valid HOME directory, as is used on many machines that
 385       // have unix utilities on them, we should use that.
 386       const wxChar *szHome = wxGetenv(wxT("HOME"));
 387
 388       if ( szHome != NULL )
 389       {
 390         strDir = szHome;
 391       }
 392       else // no HOME, try HOMEDRIVE/PATH
 393       {
 394           szHome = wxGetenv(wxT("HOMEDRIVE"));
 395           if ( szHome != NULL )
 396             strDir << szHome;
 397           szHome = wxGetenv(wxT("HOMEPATH"));
 398
 399           if ( szHome != NULL )
 400           {
 401             strDir << szHome;
 402
 403             // the idea is that under NT these variables have default values
 404             // of "%systemdrive%:" and "\\". As we don't want to create our
 405             // config files in the root directory of the system drive, we will
 406             // create it in our program's dir. However, if the user took care
 407             // to set HOMEPATH to something other than "\\", we suppose that he
 408             // knows what he is doing and use the supplied value.
 409             if ( wxStrcmp(szHome, wxT("\\")) == 0 )
 410               strDir.clear();
 411           }
 412       }
 413
 414       if ( strDir.empty() )
 415       {
 416           // If we have a valid USERPROFILE directory, as is the case in
 417           // Windows NT, 2000 and XP, we should use that as our home directory.
 418           szHome = wxGetenv(wxT("USERPROFILE"));
 419
 420           if ( szHome != NULL )
 421             strDir = szHome;
 422       }
 423
 424       if ( !strDir.empty() )
 425       {
 426           return strDir.c_str();
 427       }
 428       //else: fall back to the prograrm directory
 429     #else   // Win16
 430       // Win16 has no idea about home, so use the executable directory instead
 431     #endif  // WIN16/32
 432
 433     // 260 was taken from windef.h
 434     #ifndef MAX_PATH
 435       #define MAX_PATH  260
 436     #endif
 437
 438     wxString strPath;
 439     ::GetModuleFileName(::GetModuleHandle(NULL),
 440                         wxStringBuffer(strPath, MAX_PATH), MAX_PATH);
 441
 442     // extract the dir name
 443     wxSplitPath(strPath, &strDir, NULL, NULL);
 444
 445 #endif  // UNIX/Win
 446
 447   return strDir.c_str();
 448 }
 449
 450 wxChar *wxGetUserHome(const wxString& WXUNUSED(user))
 451 {
 452     // VZ: the old code here never worked for user != "" anyhow! Moreover, it
 453     //     returned sometimes a malloc()'d pointer, sometimes a pointer to a
 454     //     static buffer and sometimes I don't even know what.
 455     static wxString s_home;
 456
 457     return (wxChar *)wxGetHomeDir(&s_home);
 458 }
 459
 460 bool wxDirExists(const wxString& dir)
 461 {
 462 #ifdef __WXMICROWIN__
 463     return wxPathExist(dir);
 464 #elif defined(__WIN32__)
 465     DWORD attribs = GetFileAttributes(dir);
 466     return ((attribs != (DWORD)-1) && (attribs & FILE_ATTRIBUTE_DIRECTORY));
 467 #else // Win16
 468     #ifdef __BORLANDC__
 469         struct ffblk fileInfo;
 470     #else
 471         struct find_t fileInfo;
 472     #endif
 473     // In Borland findfirst has a different argument
 474     // ordering from _dos_findfirst. But _dos_findfirst
 475     // _should_ be ok in both MS and Borland... why not?
 476     #ifdef __BORLANDC__
 477         return (findfirst(dir, &fileInfo, _A_SUBDIR) == 0 &&
 478                (fileInfo.ff_attrib & _A_SUBDIR) != 0);
 479     #else
 480         return (_dos_findfirst(dir, _A_SUBDIR, &fileInfo) == 0) &&
 481                ((fileInfo.attrib & _A_SUBDIR) != 0);
 482     #endif
 483 #endif // Win32/16
 484 }
 485
 486 bool wxGetDiskSpace(const wxString& path, wxLongLong *pTotal, wxLongLong *pFree)
 487 {
 488 #ifdef __WXWINCE__
 489     return FALSE;
 490 #else
 491     if ( path.empty() )
 492         return FALSE;
 493
 494 // old w32api don't have ULARGE_INTEGER
 495 #if defined(__WIN32__) && \
 496     (!defined(__GNUWIN32__) || wxCHECK_W32API_VERSION( 0, 3 ))
 497     // GetDiskFreeSpaceEx() is not available under original Win95, check for
 498     // it
 499     typedef BOOL (WINAPI *GetDiskFreeSpaceEx_t)(LPCTSTR,
 500                                                 PULARGE_INTEGER,
 501                                                 PULARGE_INTEGER,
 502                                                 PULARGE_INTEGER);
 503
 504     GetDiskFreeSpaceEx_t
 505         pGetDiskFreeSpaceEx = (GetDiskFreeSpaceEx_t)::GetProcAddress
 506                               (
 507                                 ::GetModuleHandle(_T("kernel32.dll")),
 508 #if wxUSE_UNICODE
 509                                 "GetDiskFreeSpaceExW"
 510 #else
 511                                 "GetDiskFreeSpaceExA"
 512 #endif
 513                               );
 514
 515     if ( pGetDiskFreeSpaceEx )
 516     {
 517         ULARGE_INTEGER bytesFree, bytesTotal;
 518
 519         // may pass the path as is, GetDiskFreeSpaceEx() is smart enough
 520         if ( !pGetDiskFreeSpaceEx(path,
 521                                   &bytesFree,
 522                                   &bytesTotal,
 523                                   NULL) )
 524         {
 525             wxLogLastError(_T("GetDiskFreeSpaceEx"));
 526
 527             return FALSE;
 528         }
 529
 530         // ULARGE_INTEGER is a union of a 64 bit value and a struct containing
 531         // two 32 bit fields which may be or may be not named - try to make it
 532         // compile in all cases
 533 #if defined(__BORLANDC__) && !defined(_ANONYMOUS_STRUCT)
 534         #define UL(ul) ul.u
 535 #else // anon union
 536         #define UL(ul) ul
 537 #endif
 538         if ( pTotal )
 539         {
 540             *pTotal = wxLongLong(UL(bytesTotal).HighPart, UL(bytesTotal).LowPart);
 541         }
 542
 543         if ( pFree )
 544         {
 545             *pFree = wxLongLong(UL(bytesFree).HighPart, UL(bytesFree).LowPart);
 546         }
 547     }
 548     else
 549 #endif // Win32
 550     {
 551         // there's a problem with drives larger than 2GB, GetDiskFreeSpaceEx()
 552         // should be used instead - but if it's not available, fall back on
 553         // GetDiskFreeSpace() nevertheless...
 554
 555         DWORD lSectorsPerCluster,
 556               lBytesPerSector,
 557               lNumberOfFreeClusters,
 558               lTotalNumberOfClusters;
 559
 560         // FIXME: this is wrong, we should extract the root drive from path
 561         //        instead, but this is the job for wxFileName...
 562         if ( !::GetDiskFreeSpace(path,
 563                                  &lSectorsPerCluster,
 564                                  &lBytesPerSector,
 565                                  &lNumberOfFreeClusters,
 566                                  &lTotalNumberOfClusters) )
 567         {
 568             wxLogLastError(_T("GetDiskFreeSpace"));
 569
 570             return FALSE;
 571         }
 572
 573         wxLongLong lBytesPerCluster = lSectorsPerCluster;
 574         lBytesPerCluster *= lBytesPerSector;
 575
 576         if ( pTotal )
 577         {
 578             *pTotal = lBytesPerCluster;
 579             *pTotal *= lTotalNumberOfClusters;
 580         }
 581
 582         if ( pFree )
 583         {
 584             *pFree = lBytesPerCluster;
 585             *pFree *= lNumberOfFreeClusters;
 586         }
 587     }
 588
 589     return TRUE;
 590 #endif
 591     // __WXWINCE__
 592 }
 593
 594 // ----------------------------------------------------------------------------
 595 // env vars
 596 // ----------------------------------------------------------------------------
 597
 598 bool wxGetEnv(const wxString& var, wxString *value)
 599 {
 600 #ifdef __WXWINCE__
 601     return FALSE;
 602 #elif defined(__WIN16__)
 603     const wxChar* ret = wxGetenv(var);
 604     if ( !ret )
 605         return FALSE;
 606
 607     if ( value )
 608     {
 609         *value = ret;
 610     }
 611
 612     return TRUE;
 613 #else // Win32
 614     // first get the size of the buffer
 615     DWORD dwRet = ::GetEnvironmentVariable(var, NULL, 0);
 616     if ( !dwRet )
 617     {
 618         // this means that there is no such variable
 619         return FALSE;
 620     }
 621
 622     if ( value )
 623     {
 624         (void)::GetEnvironmentVariable(var, wxStringBuffer(*value, dwRet),
 625                                        dwRet);
 626     }
 627
 628     return TRUE;
 629 #endif // Win16/32
 630 }
 631
 632 bool wxSetEnv(const wxString& var, const wxChar *value)
 633 {
 634     // some compilers have putenv() or _putenv() or _wputenv() but it's better
 635     // to always use Win32 function directly instead of dealing with them
 636 #if defined(__WIN32__) && !defined(__WXWINCE__)
 637     if ( !::SetEnvironmentVariable(var, value) )
 638     {
 639         wxLogLastError(_T("SetEnvironmentVariable"));
 640
 641         return FALSE;
 642     }
 643
 644     return TRUE;
 645 #else // no way to set env vars
 646     return FALSE;
 647 #endif
 648 }
 649
 650 // ----------------------------------------------------------------------------
 651 // process management
 652 // ----------------------------------------------------------------------------
 653
 654 // structure used to pass parameters from wxKill() to wxEnumFindByPidProc()
 655 struct wxFindByPidParams
 656 {
 657     wxFindByPidParams() { hwnd = 0; pid = 0; }
 658
 659     // the HWND used to return the result
 660     HWND hwnd;
 661
 662     // the PID we're looking from
 663     DWORD pid;
 664
 665     DECLARE_NO_COPY_CLASS(wxFindByPidParams)
 666 };
 667
 668 // wxKill helper: EnumWindows() callback which is used to find the first (top
 669 // level) window belonging to the given process
 670 BOOL CALLBACK wxEnumFindByPidProc(HWND hwnd, LPARAM lParam)
 671 {
 672     DWORD pid;
 673     (void)::GetWindowThreadProcessId(hwnd, &pid);
 674
 675     wxFindByPidParams *params = (wxFindByPidParams *)lParam;
 676     if ( pid == params->pid )
 677     {
 678         // remember the window we found
 679         params->hwnd = hwnd;
 680
 681         // return FALSE to stop the enumeration
 682         return FALSE;
 683     }
 684
 685     // continue enumeration
 686     return TRUE;
 687 }
 688
 689 int wxKill(long pid, wxSignal sig, wxKillError *krc)
 690 {
 691     // get the process handle to operate on
 692     HANDLE hProcess = ::OpenProcess(SYNCHRONIZE |
 693                                     PROCESS_TERMINATE |
 694                                     PROCESS_QUERY_INFORMATION,
 695                                     FALSE, // not inheritable
 696                                     (DWORD)pid);
 697     if ( hProcess == NULL )
 698     {
 699         if ( krc )
 700         {
 701             if ( ::GetLastError() == ERROR_ACCESS_DENIED )
 702             {
 703                 *krc = wxKILL_ACCESS_DENIED;
 704             }
 705             else
 706             {
 707                 *krc = wxKILL_NO_PROCESS;
 708             }
 709         }
 710
 711         return -1;
 712     }
 713
 714     bool ok = TRUE;
 715     switch ( sig )
 716     {
 717         case wxSIGKILL:
 718             // kill the process forcefully returning -1 as error code
 719             if ( !::TerminateProcess(hProcess, (UINT)-1) )
 720             {
 721                 wxLogSysError(_("Failed to kill process %d"), pid);
 722
 723                 if ( krc )
 724                 {
 725                     // this is not supposed to happen if we could open the
 726                     // process
 727                     *krc = wxKILL_ERROR;
 728                 }
 729
 730                 ok = FALSE;
 731             }
 732             break;
 733
 734         case wxSIGNONE:
 735             // do nothing, we just want to test for process existence
 736             break;
 737
 738         default:
 739             // any other signal means "terminate"
 740             {
 741                 wxFindByPidParams params;
 742                 params.pid = (DWORD)pid;
 743
 744                 // EnumWindows() has nice semantics: it returns 0 if it found
 745                 // something or if an error occured and non zero if it
 746                 // enumerated all the window
 747                 if ( !::EnumWindows(wxEnumFindByPidProc, (LPARAM)&params) )
 748                 {
 749                     // did we find any window?
 750                     if ( params.hwnd )
 751                     {
 752                         // tell the app to close
 753                         //
 754                         // NB: this is the harshest way, the app won't have
 755                         //     opportunity to save any files, for example, but
 756                         //     this is probably what we want here. If not we
 757                         //     can also use SendMesageTimeout(WM_CLOSE)
 758                         if ( !::PostMessage(params.hwnd, WM_QUIT, 0, 0) )
 759                         {
 760                             wxLogLastError(_T("PostMessage(WM_QUIT)"));
 761                         }
 762                     }
 763                     else // it was an error then
 764                     {
 765                         wxLogLastError(_T("EnumWindows"));
 766
 767                         ok = FALSE;
 768                     }
 769                 }
 770                 else // no windows for this PID
 771                 {
 772                     if ( krc )
 773                     {
 774                         *krc = wxKILL_ERROR;
 775                     }
 776
 777                     ok = FALSE;
 778                 }
 779             }
 780     }
 781
 782     // the return code
 783     DWORD rc;
 784
 785     if ( ok )
 786     {
 787         // as we wait for a short time, we can use just WaitForSingleObject()
 788         // and not MsgWaitForMultipleObjects()
 789         switch ( ::WaitForSingleObject(hProcess, 500 /* msec */) )
 790         {
 791             case WAIT_OBJECT_0:
 792                 // process terminated
 793                 if ( !::GetExitCodeProcess(hProcess, &rc) )
 794                 {
 795                     wxLogLastError(_T("GetExitCodeProcess"));
 796                 }
 797                 break;
 798
 799             default:
 800                 wxFAIL_MSG( _T("unexpected WaitForSingleObject() return") );
 801                 // fall through
 802
 803             case WAIT_FAILED:
 804                 wxLogLastError(_T("WaitForSingleObject"));
 805                 // fall through
 806
 807             case WAIT_TIMEOUT:
 808                 if ( krc )
 809                 {
 810                     *krc = wxKILL_ERROR;
 811                 }
 812
 813                 rc = STILL_ACTIVE;
 814                 break;
 815         }
 816     }
 817     else // !ok
 818     {
 819         // just to suppress the warnings about uninitialized variable
 820         rc = 0;
 821     }
 822
 823     ::CloseHandle(hProcess);
 824
 825     // the return code is the same as from Unix kill(): 0 if killed
 826     // successfully or -1 on error
 827     //
 828     // be careful to interpret rc correctly: for wxSIGNONE we return success if
 829     // the process exists, for all the other sig values -- if it doesn't
 830     if ( ok &&
 831             ((sig == wxSIGNONE) == (rc == STILL_ACTIVE)) )
 832     {
 833         if ( krc )
 834         {
 835             *krc = wxKILL_OK;
 836         }
 837
 838         return 0;
 839     }
 840
 841     // error
 842     return -1;
 843 }
 844
 845 // Execute a program in an Interactive Shell
 846 bool wxShell(const wxString& command)
 847 {
 848 #ifdef __WXWINCE__
 849     return FALSE;
 850 #else
 851     wxChar *shell = wxGetenv(wxT("COMSPEC"));
 852     if ( !shell )
 853         shell = (wxChar*) wxT("\\COMMAND.COM");
 854
 855     wxString cmd;
 856     if ( !command )
 857     {
 858         // just the shell
 859         cmd = shell;
 860     }
 861     else
 862     {
 863         // pass the command to execute to the command processor
 864         cmd.Printf(wxT("%s /c %s"), shell, command.c_str());
 865     }
 866
 867     return wxExecute(cmd, wxEXEC_SYNC) == 0;
 868 #endif
 869 }
 870
 871 // Shutdown or reboot the PC
 872 bool wxShutdown(wxShutdownFlags wFlags)
 873 {
 874 #ifdef __WXWINCE__
 875     return FALSE;
 876 #elif defined(__WIN32__)
 877     bool bOK = TRUE;
 878
 879     if ( wxGetOsVersion(NULL, NULL) == wxWINDOWS_NT ) // if is NT or 2K
 880     {
 881         // Get a token for this process.
 882         HANDLE hToken;
 883         bOK = ::OpenProcessToken(GetCurrentProcess(),
 884                                  TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY,
 885                                  &hToken) != 0;
 886         if ( bOK )
 887         {
 888             TOKEN_PRIVILEGES tkp;
 889
 890             // Get the LUID for the shutdown privilege.
 891             ::LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,
 892                                    &tkp.Privileges[0].Luid);
 893
 894             tkp.PrivilegeCount = 1;  // one privilege to set
 895             tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
 896
 897             // Get the shutdown privilege for this process.
 898             ::AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,
 899                                     (PTOKEN_PRIVILEGES)NULL, 0);
 900
 901             // Cannot test the return value of AdjustTokenPrivileges.
 902             bOK = ::GetLastError() == ERROR_SUCCESS;
 903         }
 904     }
 905
 906     if ( bOK )
 907     {
 908         UINT flags = EWX_SHUTDOWN | EWX_FORCE;
 909         switch ( wFlags )
 910         {
 911             case wxSHUTDOWN_POWEROFF:
 912                 flags |= EWX_POWEROFF;
 913                 break;
 914
 915             case wxSHUTDOWN_REBOOT:
 916                 flags |= EWX_REBOOT;
 917                 break;
 918
 919             default:
 920                 wxFAIL_MSG( _T("unknown wxShutdown() flag") );
 921                 return FALSE;
 922         }
 923
 924         bOK = ::ExitWindowsEx(EWX_SHUTDOWN | EWX_FORCE | EWX_REBOOT, 0) != 0;
 925     }
 926
 927     return bOK;
 928 #else // Win16
 929     return FALSE;
 930 #endif // Win32/16
 931 }
 932
 933 // ----------------------------------------------------------------------------
 934 // misc
 935 // ----------------------------------------------------------------------------
 936
 937 // Get free memory in bytes, or -1 if cannot determine amount (e.g. on UNIX)
 938 long wxGetFreeMemory()
 939 {
 940 #if defined(__WIN32__) && !defined(__BORLANDC__)
 941     MEMORYSTATUS memStatus;
 942     memStatus.dwLength = sizeof(MEMORYSTATUS);
 943     GlobalMemoryStatus(&memStatus);
 944     return memStatus.dwAvailPhys;
 945 #else
 946     return (long)GetFreeSpace(0);
 947 #endif
 948 }
 949
 950 unsigned long wxGetProcessId()
 951 {
 952 #ifdef __WIN32__
 953     return ::GetCurrentProcessId();
 954 #else
 955     return 0;
 956 #endif
 957 }
 958
 959 // Emit a beeeeeep
 960 void wxBell()
 961 {
 962     ::MessageBeep((UINT)-1);        // default sound
 963 }
 964
 965 wxString wxGetOsDescription()
 966 {
 967 #ifdef __WIN32__
 968     wxString str;
 969
 970     OSVERSIONINFO info;
 971     wxZeroMemory(info);
 972
 973     info.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
 974     if ( ::GetVersionEx(&info) )
 975     {
 976         switch ( info.dwPlatformId )
 977         {
 978             case VER_PLATFORM_WIN32s:
 979                 str = _("Win32s on Windows 3.1");
 980                 break;
 981
 982             case VER_PLATFORM_WIN32_WINDOWS:
 983                 str.Printf(_("Windows 9%c"),
 984                            info.dwMinorVersion == 0 ? _T('5') : _T('8'));
 985                 if ( !wxIsEmpty(info.szCSDVersion) )
 986                 {
 987                     str << _T(" (") << info.szCSDVersion << _T(')');
 988                 }
 989                 break;
 990
 991             case VER_PLATFORM_WIN32_NT:
 992                 str.Printf(_T("Windows NT %lu.%lu (build %lu"),
 993                            info.dwMajorVersion,
 994                            info.dwMinorVersion,
 995                            info.dwBuildNumber);
 996                 if ( !wxIsEmpty(info.szCSDVersion) )
 997                 {
 998                     str << _T(", ") << info.szCSDVersion;
 999                 }
1000                 str << _T(')');
1001                 break;
1002         }
1003     }
1004     else
1005     {
1006         wxFAIL_MSG( _T("GetVersionEx() failed") ); // should never happen
1007     }
1008
1009     return str;
1010 #else // Win16
1011     return _("Windows 3.1");
1012 #endif // Win32/16
1013 }
1014
1015 wxToolkitInfo *wxAppTraits::GetToolkitInfo()
1016 {
1017     // cache the version info, it's not going to change
1018     //
1019     // NB: this is MT-safe, we may use these static vars from different threads
1020     //     but as they always have the same value it doesn't matter
1021     static int s_ver = -1,
1022                s_major = -1,
1023                s_minor = -1;
1024
1025     if ( s_ver == -1 )
1026     {
1027         OSVERSIONINFO info;
1028         wxZeroMemory(info);
1029
1030         s_ver = wxWINDOWS;
1031         info.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
1032         if ( ::GetVersionEx(&info) )
1033         {
1034             s_major = info.dwMajorVersion;
1035             s_minor = info.dwMinorVersion;
1036
1037             switch ( info.dwPlatformId )
1038             {
1039                 case VER_PLATFORM_WIN32s:
1040                     s_ver = wxWIN32S;
1041                     break;
1042
1043                 case VER_PLATFORM_WIN32_WINDOWS:
1044                     s_ver = wxWIN95;
1045                     break;
1046
1047                 case VER_PLATFORM_WIN32_NT:
1048                     s_ver = wxWINDOWS_NT;
1049                     break;
1050 #ifdef __WXWINCE__
1051                 case VER_PLATFORM_WIN32_CE:
1052                     s_ver = wxWINDOWS_CE;
1053                     break;
1054 #endif
1055             }
1056         }
1057     }
1058
1059     static wxToolkitInfo info;
1060     info.versionMajor = s_major;
1061     info.versionMinor = s_minor;
1062     info.os = s_ver;
1063     info.name = _T("wxBase");
1064     return &info;
1065 }
1066
1067 // ----------------------------------------------------------------------------
1068 // sleep functions
1069 // ----------------------------------------------------------------------------
1070
1071 void wxUsleep(unsigned long milliseconds)
1072 {
1073     ::Sleep(milliseconds);
1074 }
1075
1076 void wxSleep(int nSecs)
1077 {
1078     wxUsleep(1000*nSecs);
1079 }
1080
1081 // ----------------------------------------------------------------------------
1082 // font encoding <-> Win32 codepage conversion functions
1083 // ----------------------------------------------------------------------------
1084
1085 extern WXDLLIMPEXP_BASE long wxEncodingToCharset(wxFontEncoding encoding)
1086 {
1087     switch ( encoding )
1088     {
1089         // although this function is supposed to return an exact match, do do
1090         // some mappings here for the most common case of "standard" encoding
1091         case wxFONTENCODING_SYSTEM:
1092             return DEFAULT_CHARSET;
1093
1094         case wxFONTENCODING_ISO8859_1:
1095         case wxFONTENCODING_ISO8859_15:
1096         case wxFONTENCODING_CP1252:
1097             return ANSI_CHARSET;
1098
1099 #if !defined(__WXMICROWIN__)
1100         // The following four fonts are multi-byte charsets
1101         case wxFONTENCODING_CP932:
1102             return SHIFTJIS_CHARSET;
1103
1104         case wxFONTENCODING_CP936:
1105             return GB2312_CHARSET;
1106
1107         case wxFONTENCODING_CP949:
1108             return HANGUL_CHARSET;
1109
1110         case wxFONTENCODING_CP950:
1111             return CHINESEBIG5_CHARSET;
1112
1113         // The rest are single byte encodings
1114         case wxFONTENCODING_CP1250:
1115             return EASTEUROPE_CHARSET;
1116
1117         case wxFONTENCODING_CP1251:
1118             return RUSSIAN_CHARSET;
1119
1120         case wxFONTENCODING_CP1253:
1121             return GREEK_CHARSET;
1122
1123         case wxFONTENCODING_CP1254:
1124             return TURKISH_CHARSET;
1125
1126         case wxFONTENCODING_CP1255:
1127             return HEBREW_CHARSET;
1128
1129         case wxFONTENCODING_CP1256:
1130             return ARABIC_CHARSET;
1131
1132         case wxFONTENCODING_CP1257:
1133             return BALTIC_CHARSET;
1134
1135         case wxFONTENCODING_CP874:
1136             return THAI_CHARSET;
1137 #endif // !__WXMICROWIN__
1138
1139         case wxFONTENCODING_CP437:
1140             return OEM_CHARSET;
1141
1142         default:
1143             // no way to translate this encoding into a Windows charset
1144             return -1;
1145     }
1146 }
1147
1148 // we have 2 versions of wxCharsetToCodepage(): the old one which directly
1149 // looks up the vlaues in the registry and the new one which is more
1150 // politically correct and has more chances to work on other Windows versions
1151 // as well but the old version is still needed for !wxUSE_FONTMAP case
1152 #if wxUSE_FONTMAP
1153
1154 #include "wx/fontmap.h"
1155
1156 extern WXDLLIMPEXP_BASE long wxEncodingToCodepage(wxFontEncoding encoding)
1157 {
1158     // translate encoding into the Windows CHARSET
1159     long charset = wxEncodingToCharset(encoding);
1160     if ( charset == -1 )
1161         return -1;
1162
1163     // translate CHARSET to code page
1164     CHARSETINFO csetInfo;
1165     if ( !::TranslateCharsetInfo((DWORD *)(DWORD)charset,
1166                                  &csetInfo,
1167                                  TCI_SRCCHARSET) )
1168     {
1169         wxLogLastError(_T("TranslateCharsetInfo(TCI_SRCCHARSET)"));
1170
1171         return -1;
1172     }
1173
1174     return csetInfo.ciACP;
1175 }
1176
1177 extern long wxCharsetToCodepage(const wxChar *name)
1178 {
1179     // first get the font encoding for this charset
1180     if ( !name )
1181         return -1;
1182
1183     wxFontEncoding enc = wxFontMapper::Get()->CharsetToEncoding(name, FALSE);
1184     if ( enc == wxFONTENCODING_SYSTEM )
1185         return -1;
1186
1187     // the use the helper function
1188     return wxEncodingToCodepage(enc);
1189 }
1190
1191 #else // !wxUSE_FONTMAP
1192
1193 #include "wx/msw/registry.h"
1194
1195 // this should work if Internet Exploiter is installed
1196 extern long wxCharsetToCodepage(const wxChar *name)
1197 {
1198     if (!name)
1199         return GetACP();
1200
1201     long CP = -1;
1202
1203     wxString path(wxT("MIME\\Database\\Charset\\"));
1204     wxString cn(name);
1205
1206     // follow the alias loop
1207     for ( ;; )
1208     {
1209         wxRegKey key(wxRegKey::HKCR, path + cn);
1210
1211         if (!key.Exists())
1212             break;
1213
1214         // two cases: either there's an AliasForCharset string,
1215         // or there are Codepage and InternetEncoding dwords.
1216         // The InternetEncoding gives us the actual encoding,
1217         // the Codepage just says which Windows character set to
1218         // use when displaying the data.
1219         if (key.HasValue(wxT("InternetEncoding")) &&
1220             key.QueryValue(wxT("InternetEncoding"), &CP))
1221             break;
1222
1223         // no encoding, see if it's an alias
1224         if (!key.HasValue(wxT("AliasForCharset")) ||
1225             !key.QueryValue(wxT("AliasForCharset"), cn))
1226             break;
1227     }
1228
1229     return CP;
1230 }
1231
1232 #endif // wxUSE_FONTMAP/!wxUSE_FONTMAP
1233