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 and Markus Holzem
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21 // #pragma implementation "utils.h"   // Note: this is done in utilscmn.cpp now.
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/utils.h"
  33     #include "wx/app.h"
  34     #include "wx/intl.h"
  35     #include "wx/log.h"
  36 #if wxUSE_GUI
  37     #include "wx/cursor.h"
  38 #endif
  39 #endif  //WX_PRECOMP
  40
  41 // In some mingws there is a missing extern "C" int the winsock header,
  42 // so we put it here just to be safe. Note that this must appear _before_
  43 // #include "wx/msw/private.h" which itself includes <windows.h>, as this
  44 // one in turn includes <winsock.h> unless we define WIN32_LEAN_AND_MEAN.
  45 //
  46 #if defined(__WIN32__) && !defined(__TWIN32__) && !defined(__WXMICROWIN__) && ! (defined(__GNUWIN32__) && !defined(__MINGW32__))
  47 extern "C" {
  48     #include <winsock.h>    // we use socket functions in wxGetFullHostName()
  49 }
  50 #endif
  51
  52 #include "wx/msw/private.h"     // includes <windows.h>
  53
  54 #include "wx/timer.h"
  55
  56 #if !defined(__GNUWIN32__) && !defined(__WXWINE__) && !defined(__SALFORDC__) && !defined(__WXMICROWIN__)
  57     #include <direct.h>
  58
  59     #ifndef __MWERKS__
  60         #include <dos.h>
  61     #endif
  62 #endif  //GNUWIN32
  63
  64 #if defined(__CYGWIN__) && !defined(__TWIN32__)
  65     #include <sys/unistd.h>
  66     #include <sys/stat.h>
  67     #include <sys/cygwin.h> // for cygwin_conv_to_full_win32_path()
  68 #endif  //GNUWIN32
  69
  70 #ifdef __BORLANDC__ // Please someone tell me which version of Borland needs
  71                     // this (3.1 I believe) and how to test for it.
  72                     // If this works for Borland 4.0 as well, then no worries.
  73     #include <dir.h>
  74 #endif
  75
  76 // VZ: there is some code using NetXXX() functions to get the full user name:
  77 //     I don't think it's a good idea because they don't work under Win95 and
  78 //     seem to return the same as wxGetUserId() under NT. If you really want
  79 //     to use them, just #define USE_NET_API
  80 #undef USE_NET_API
  81
  82 #ifdef USE_NET_API
  83     #include <lm.h>
  84 #endif // USE_NET_API
  85
  86 #if defined(__WIN32__) && !defined(__WXWINE__) && !defined(__WXMICROWIN__)
  87     #include <io.h>
  88
  89     #ifndef __GNUWIN32__
  90         #include <shellapi.h>
  91     #endif
  92 #endif
  93
  94 #ifndef __WATCOMC__
  95     #if !(defined(_MSC_VER) && (_MSC_VER > 800))
  96         #include <errno.h>
  97     #endif
  98 #endif
  99
 100 //// BEGIN for console support: VC++ only
 101 #ifdef __VISUALC__
 102
 103 #include "wx/msw/msvcrt.h"
 104
 105 #include <fcntl.h>
 106
 107 #include "wx/ioswrap.h"
 108
 109 /* Need to undef new if including crtdbg.h */
 110 #  ifdef new
 111 #  undef new
 112 #  endif
 113
 114 #ifndef __WIN16__
 115 #  include <crtdbg.h>
 116 #endif
 117
 118 #  if defined(__WXDEBUG__) && wxUSE_GLOBAL_MEMORY_OPERATORS && wxUSE_DEBUG_NEW_ALWAYS
 119 #  define new new(__TFILE__,__LINE__)
 120 #  endif
 121
 122 #endif
 123   // __VISUALC__
 124 /// END for console support
 125
 126 // ----------------------------------------------------------------------------
 127 // constants
 128 // ----------------------------------------------------------------------------
 129
 130 // In the WIN.INI file
 131 static const wxChar WX_SECTION[] = wxT("wxWindows");
 132 static const wxChar eUSERNAME[]  = wxT("UserName");
 133
 134 // these are only used under Win16
 135 #if !defined(__WIN32__) && !defined(__WXMICROWIN__)
 136 static const wxChar eHOSTNAME[]  = wxT("HostName");
 137 static const wxChar eUSERID[]    = wxT("UserId");
 138 #endif // !Win32
 139
 140 #ifndef __WXMICROWIN__
 141
 142 // ============================================================================
 143 // implementation
 144 // ============================================================================
 145
 146 // ----------------------------------------------------------------------------
 147 // get host name and related
 148 // ----------------------------------------------------------------------------
 149
 150 // Get hostname only (without domain name)
 151 bool wxGetHostName(wxChar *buf, int maxSize)
 152 {
 153 #if defined(__WIN32__) && !defined(__TWIN32__) && !defined(__WXMICROWIN__)
 154     DWORD nSize = maxSize;
 155     if ( !::GetComputerName(buf, &nSize) )
 156     {
 157         wxLogLastError(wxT("GetComputerName"));
 158
 159         return FALSE;
 160     }
 161
 162     return TRUE;
 163 #else
 164     wxChar *sysname;
 165     const wxChar *default_host = wxT("noname");
 166
 167     if ((sysname = wxGetenv(wxT("SYSTEM_NAME"))) == NULL) {
 168         GetProfileString(WX_SECTION, eHOSTNAME, default_host, buf, maxSize - 1);
 169     } else
 170         wxStrncpy(buf, sysname, maxSize - 1);
 171     buf[maxSize] = wxT('\0');
 172     return *buf ? TRUE : FALSE;
 173 #endif
 174 }
 175
 176 // get full hostname (with domain name if possible)
 177 bool wxGetFullHostName(wxChar *buf, int maxSize)
 178 {
 179 #if defined(__WIN32__) && !defined(__TWIN32__) && !defined(__WXMICROWIN__) && ! (defined(__GNUWIN32__) && !defined(__MINGW32__))
 180     // TODO should use GetComputerNameEx() when available
 181
 182     // the idea is that if someone had set wxUSE_SOCKETS to 0 the code
 183     // shouldn't use winsock.dll (a.k.a. ws2_32.dll) at all so only use this
 184     // code if we link with it anyhow
 185 #if wxUSE_SOCKETS
 186     WSADATA wsa;
 187     if ( WSAStartup(MAKEWORD(1, 1), &wsa) == 0 )
 188     {
 189         wxString host;
 190         char bufA[256];
 191         if ( gethostname(bufA, WXSIZEOF(bufA)) == 0 )
 192         {
 193             // gethostname() won't usually include the DNS domain name, for
 194             // this we need to work a bit more
 195             if ( !strchr(bufA, '.') )
 196             {
 197                 struct hostent *pHostEnt =  gethostbyname(bufA);
 198
 199                 if ( pHostEnt )
 200                 {
 201                     // Windows will use DNS internally now
 202                     pHostEnt = gethostbyaddr(pHostEnt->h_addr, 4, PF_INET);
 203                 }
 204
 205                 if ( pHostEnt )
 206                 {
 207                     host = pHostEnt->h_name;
 208                 }
 209             }
 210         }
 211
 212         WSACleanup();
 213
 214         if ( !host.empty() )
 215         {
 216             wxStrncpy(buf, host, maxSize);
 217
 218             return TRUE;
 219         }
 220     }
 221 #endif // wxUSE_SOCKETS
 222
 223 #endif // Win32
 224
 225     return wxGetHostName(buf, maxSize);
 226 }
 227
 228 // Get user ID e.g. jacs
 229 bool wxGetUserId(wxChar *buf, int maxSize)
 230 {
 231 #if defined(__WIN32__) && !defined(__win32s__) && !defined(__TWIN32__) && !defined(__WXMICROWIN__)
 232     DWORD nSize = maxSize;
 233     if ( ::GetUserName(buf, &nSize) == 0 )
 234     {
 235         // actually, it does happen on Win9x if the user didn't log on
 236         DWORD res = ::GetEnvironmentVariable(wxT("username"), buf, maxSize);
 237         if ( res == 0 )
 238         {
 239             // not found
 240             return FALSE;
 241         }
 242     }
 243
 244     return TRUE;
 245 #else   // Win16 or Win32s
 246     wxChar *user;
 247     const wxChar *default_id = wxT("anonymous");
 248
 249     // Can't assume we have NIS (PC-NFS) or some other ID daemon
 250     // So we ...
 251     if (  (user = wxGetenv(wxT("USER"))) == NULL &&
 252             (user = wxGetenv(wxT("LOGNAME"))) == NULL )
 253     {
 254         // Use wxWindows configuration data (comming soon)
 255         GetProfileString(WX_SECTION, eUSERID, default_id, buf, maxSize - 1);
 256     }
 257     else
 258     {
 259         wxStrncpy(buf, user, maxSize - 1);
 260     }
 261
 262     return *buf ? TRUE : FALSE;
 263 #endif
 264 }
 265
 266 // Get user name e.g. Julian Smart
 267 bool wxGetUserName(wxChar *buf, int maxSize)
 268 {
 269 #if wxUSE_PENWINDOWS && !defined(__WATCOMC__) && !defined(__GNUWIN32__)
 270     extern HANDLE g_hPenWin; // PenWindows Running?
 271     if (g_hPenWin)
 272     {
 273         // PenWindows Does have a user concept!
 274         // Get the current owner of the recognizer
 275         GetPrivateProfileString("Current", "User", default_name, wxBuffer, maxSize - 1, "PENWIN.INI");
 276         strncpy(buf, wxBuffer, maxSize - 1);
 277     }
 278     else
 279 #endif
 280     {
 281 #ifdef USE_NET_API
 282         CHAR szUserName[256];
 283         if ( !wxGetUserId(szUserName, WXSIZEOF(szUserName)) )
 284             return FALSE;
 285
 286         // TODO how to get the domain name?
 287         CHAR *szDomain = "";
 288
 289         // the code is based on the MSDN example (also see KB article Q119670)
 290         WCHAR wszUserName[256];          // Unicode user name
 291         WCHAR wszDomain[256];
 292         LPBYTE ComputerName;
 293
 294         USER_INFO_2 *ui2;         // User structure
 295
 296         // Convert ANSI user name and domain to Unicode
 297         MultiByteToWideChar( CP_ACP, 0, szUserName, strlen(szUserName)+1,
 298                 wszUserName, WXSIZEOF(wszUserName) );
 299         MultiByteToWideChar( CP_ACP, 0, szDomain, strlen(szDomain)+1,
 300                 wszDomain, WXSIZEOF(wszDomain) );
 301
 302         // Get the computer name of a DC for the domain.
 303         if ( NetGetDCName( NULL, wszDomain, &ComputerName ) != NERR_Success )
 304         {
 305             wxLogError(wxT("Can not find domain controller"));
 306
 307             goto error;
 308         }
 309
 310         // Look up the user on the DC
 311         NET_API_STATUS status = NetUserGetInfo( (LPWSTR)ComputerName,
 312                 (LPWSTR)&wszUserName,
 313                 2, // level - we want USER_INFO_2
 314                 (LPBYTE *) &ui2 );
 315         switch ( status )
 316         {
 317             case NERR_Success:
 318                 // ok
 319                 break;
 320
 321             case NERR_InvalidComputer:
 322                 wxLogError(wxT("Invalid domain controller name."));
 323
 324                 goto error;
 325
 326             case NERR_UserNotFound:
 327                 wxLogError(wxT("Invalid user name '%s'."), szUserName);
 328
 329                 goto error;
 330
 331             default:
 332                 wxLogSysError(wxT("Can't get information about user"));
 333
 334                 goto error;
 335         }
 336
 337         // Convert the Unicode full name to ANSI
 338         WideCharToMultiByte( CP_ACP, 0, ui2->usri2_full_name, -1,
 339                 buf, maxSize, NULL, NULL );
 340
 341         return TRUE;
 342
 343 error:
 344         wxLogError(wxT("Couldn't look up full user name."));
 345
 346         return FALSE;
 347 #else  // !USE_NET_API
 348         // Could use NIS, MS-Mail or other site specific programs
 349         // Use wxWindows configuration data
 350         bool ok = GetProfileString(WX_SECTION, eUSERNAME, wxT(""), buf, maxSize - 1) != 0;
 351         if ( !ok )
 352         {
 353             ok = wxGetUserId(buf, maxSize);
 354         }
 355
 356         if ( !ok )
 357         {
 358             wxStrncpy(buf, wxT("Unknown User"), maxSize);
 359         }
 360 #endif // Win32/16
 361     }
 362
 363     return TRUE;
 364 }
 365
 366 const wxChar* wxGetHomeDir(wxString *pstr)
 367 {
 368   wxString& strDir = *pstr;
 369
 370   #if defined(__UNIX__) && !defined(__TWIN32__)
 371     const wxChar *szHome = wxGetenv("HOME");
 372     if ( szHome == NULL ) {
 373       // we're homeless...
 374       wxLogWarning(_("can't find user's HOME, using current directory."));
 375       strDir = wxT(".");
 376     }
 377     else
 378        strDir = szHome;
 379
 380     // add a trailing slash if needed
 381     if ( strDir.Last() != wxT('/') )
 382       strDir << wxT('/');
 383
 384     #ifdef __CYGWIN__
 385       // Cygwin returns unix type path but that does not work well
 386       static wxChar windowsPath[MAX_PATH];
 387       cygwin_conv_to_full_win32_path(strDir, windowsPath);
 388       strDir = windowsPath;
 389     #endif
 390   #else   // Windows
 391     #ifdef  __WIN32__
 392       strDir.clear();
 393
 394       // If we have a valid HOME directory, as is used on many machines that
 395       // have unix utilities on them, we should use that.
 396       const wxChar *szHome = wxGetenv(wxT("HOME"));
 397
 398       if ( szHome != NULL )
 399       {
 400         strDir = szHome;
 401       }
 402       else // no HOME, try HOMEDRIVE/PATH
 403       {
 404           szHome = wxGetenv(wxT("HOMEDRIVE"));
 405           if ( szHome != NULL )
 406             strDir << szHome;
 407           szHome = wxGetenv(wxT("HOMEPATH"));
 408
 409           if ( szHome != NULL )
 410           {
 411             strDir << szHome;
 412
 413             // the idea is that under NT these variables have default values
 414             // of "%systemdrive%:" and "\\". As we don't want to create our
 415             // config files in the root directory of the system drive, we will
 416             // create it in our program's dir. However, if the user took care
 417             // to set HOMEPATH to something other than "\\", we suppose that he
 418             // knows what he is doing and use the supplied value.
 419             if ( wxStrcmp(szHome, wxT("\\")) == 0 )
 420               strDir.clear();
 421           }
 422       }
 423
 424       if ( strDir.empty() )
 425       {
 426           // If we have a valid USERPROFILE directory, as is the case in
 427           // Windows NT, 2000 and XP, we should use that as our home directory.
 428           szHome = wxGetenv(wxT("USERPROFILE"));
 429
 430           if ( szHome != NULL )
 431             strDir = szHome;
 432       }
 433
 434       if ( !strDir.empty() )
 435       {
 436           return strDir.c_str();
 437       }
 438       //else: fall back to the prograrm directory
 439     #else   // Win16
 440       // Win16 has no idea about home, so use the executable directory instead
 441     #endif  // WIN16/32
 442
 443     // 260 was taken from windef.h
 444     #ifndef MAX_PATH
 445       #define MAX_PATH  260
 446     #endif
 447
 448     wxString strPath;
 449     ::GetModuleFileName(::GetModuleHandle(NULL),
 450                         strPath.GetWriteBuf(MAX_PATH), MAX_PATH);
 451     strPath.UngetWriteBuf();
 452
 453     // extract the dir name
 454     wxSplitPath(strPath, &strDir, NULL, NULL);
 455
 456   #endif  // UNIX/Win
 457
 458   return strDir.c_str();
 459 }
 460
 461 wxChar *wxGetUserHome(const wxString& WXUNUSED(user))
 462 {
 463     // VZ: the old code here never worked for user != "" anyhow! Moreover, it
 464     //     returned sometimes a malloc()'d pointer, sometimes a pointer to a
 465     //     static buffer and sometimes I don't even know what.
 466     static wxString s_home;
 467
 468     return (wxChar *)wxGetHomeDir(&s_home);
 469 }
 470
 471 bool wxDirExists(const wxString& dir)
 472 {
 473 #ifdef __WXMICROWIN__
 474     return wxPathExist(dir);
 475 #elif defined(__WIN32__)
 476     DWORD attribs = GetFileAttributes(dir);
 477     return ((attribs != (DWORD)-1) && (attribs & FILE_ATTRIBUTE_DIRECTORY));
 478 #else // Win16
 479     #ifdef __BORLANDC__
 480         struct ffblk fileInfo;
 481     #else
 482         struct find_t fileInfo;
 483     #endif
 484     // In Borland findfirst has a different argument
 485     // ordering from _dos_findfirst. But _dos_findfirst
 486     // _should_ be ok in both MS and Borland... why not?
 487     #ifdef __BORLANDC__
 488         return (findfirst(dir, &fileInfo, _A_SUBDIR) == 0 &&
 489                (fileInfo.ff_attrib & _A_SUBDIR) != 0);
 490     #else
 491         return (_dos_findfirst(dir, _A_SUBDIR, &fileInfo) == 0) &&
 492                ((fileInfo.attrib & _A_SUBDIR) != 0);
 493     #endif
 494 #endif // Win32/16
 495 }
 496
 497 bool wxGetDiskSpace(const wxString& path, wxLongLong *pTotal, wxLongLong *pFree)
 498 {
 499     if ( path.empty() )
 500         return FALSE;
 501
 502 // old w32api don't have ULARGE_INTEGER
 503 #if defined(__WIN32__) && \
 504     (!defined(__GNUWIN32__) || wxCHECK_W32API_VERSION( 0, 3 ))
 505     // GetDiskFreeSpaceEx() is not available under original Win95, check for
 506     // it
 507     typedef BOOL (WINAPI *GetDiskFreeSpaceEx_t)(LPCTSTR,
 508                                                 PULARGE_INTEGER,
 509                                                 PULARGE_INTEGER,
 510                                                 PULARGE_INTEGER);
 511
 512     GetDiskFreeSpaceEx_t
 513         pGetDiskFreeSpaceEx = (GetDiskFreeSpaceEx_t)::GetProcAddress
 514                               (
 515                                 ::GetModuleHandle(_T("kernel32.dll")),
 516 #if wxUSE_UNICODE
 517                                 "GetDiskFreeSpaceExW"
 518 #else
 519                                 "GetDiskFreeSpaceExA"
 520 #endif
 521                               );
 522
 523     if ( pGetDiskFreeSpaceEx )
 524     {
 525         ULARGE_INTEGER bytesFree, bytesTotal;
 526
 527         // may pass the path as is, GetDiskFreeSpaceEx() is smart enough
 528         if ( !pGetDiskFreeSpaceEx(path,
 529                                   &bytesFree,
 530                                   &bytesTotal,
 531                                   NULL) )
 532         {
 533             wxLogLastError(_T("GetDiskFreeSpaceEx"));
 534
 535             return FALSE;
 536         }
 537
 538         // ULARGE_INTEGER is a union of a 64 bit value and a struct containing
 539         // two 32 bit fields which may be or may be not named - try to make it
 540         // compile in all cases
 541 #if defined(__BORLANDC__) && !defined(_ANONYMOUS_STRUCT)
 542         #define UL(ul) ul.u
 543 #else // anon union
 544         #define UL(ul) ul
 545 #endif
 546         if ( pTotal )
 547         {
 548             *pTotal = wxLongLong(UL(bytesTotal).HighPart, UL(bytesTotal).LowPart);
 549         }
 550
 551         if ( pFree )
 552         {
 553             *pFree = wxLongLong(UL(bytesFree).HighPart, UL(bytesFree).LowPart);
 554         }
 555     }
 556     else
 557 #endif // Win32
 558     {
 559         // there's a problem with drives larger than 2GB, GetDiskFreeSpaceEx()
 560         // should be used instead - but if it's not available, fall back on
 561         // GetDiskFreeSpace() nevertheless...
 562
 563         DWORD lSectorsPerCluster,
 564               lBytesPerSector,
 565               lNumberOfFreeClusters,
 566               lTotalNumberOfClusters;
 567
 568         // FIXME: this is wrong, we should extract the root drive from path
 569         //        instead, but this is the job for wxFileName...
 570         if ( !::GetDiskFreeSpace(path,
 571                                  &lSectorsPerCluster,
 572                                  &lBytesPerSector,
 573                                  &lNumberOfFreeClusters,
 574                                  &lTotalNumberOfClusters) )
 575         {
 576             wxLogLastError(_T("GetDiskFreeSpace"));
 577
 578             return FALSE;
 579         }
 580
 581         wxLongLong lBytesPerCluster = lSectorsPerCluster;
 582         lBytesPerCluster *= lBytesPerSector;
 583
 584         if ( pTotal )
 585         {
 586             *pTotal = lBytesPerCluster;
 587             *pTotal *= lTotalNumberOfClusters;
 588         }
 589
 590         if ( pFree )
 591         {
 592             *pFree = lBytesPerCluster;
 593             *pFree *= lNumberOfFreeClusters;
 594         }
 595     }
 596
 597     return TRUE;
 598 }
 599
 600 // ----------------------------------------------------------------------------
 601 // env vars
 602 // ----------------------------------------------------------------------------
 603
 604 bool wxGetEnv(const wxString& var, wxString *value)
 605 {
 606 #ifdef __WIN16__
 607     const wxChar* ret = wxGetenv(var);
 608     if (ret)
 609     {
 610         *value = ret;
 611         return TRUE;
 612     }
 613     else
 614         return FALSE;
 615 #else
 616     // first get the size of the buffer
 617     DWORD dwRet = ::GetEnvironmentVariable(var, NULL, 0);
 618     if ( !dwRet )
 619     {
 620         // this means that there is no such variable
 621         return FALSE;
 622     }
 623
 624     if ( value )
 625     {
 626         (void)::GetEnvironmentVariable(var, value->GetWriteBuf(dwRet), dwRet);
 627         value->UngetWriteBuf();
 628     }
 629
 630     return TRUE;
 631 #endif
 632 }
 633
 634 bool wxSetEnv(const wxString& var, const wxChar *value)
 635 {
 636     // some compilers have putenv() or _putenv() or _wputenv() but it's better
 637     // to always use Win32 function directly instead of dealing with them
 638 #if defined(__WIN32__)
 639     if ( !::SetEnvironmentVariable(var, value) )
 640     {
 641         wxLogLastError(_T("SetEnvironmentVariable"));
 642
 643         return FALSE;
 644     }
 645
 646     return TRUE;
 647 #else // no way to set env vars
 648     return FALSE;
 649 #endif
 650 }
 651
 652 // ----------------------------------------------------------------------------
 653 // process management
 654 // ----------------------------------------------------------------------------
 655
 656 #ifdef __WIN32__
 657
 658 // structure used to pass parameters from wxKill() to wxEnumFindByPidProc()
 659 struct wxFindByPidParams
 660 {
 661     wxFindByPidParams() { hwnd = 0; pid = 0; }
 662
 663     // the HWND used to return the result
 664     HWND hwnd;
 665
 666     // the PID we're looking from
 667     DWORD pid;
 668 };
 669
 670 // wxKill helper: EnumWindows() callback which is used to find the first (top
 671 // level) window belonging to the given process
 672 BOOL CALLBACK wxEnumFindByPidProc(HWND hwnd, LPARAM lParam)
 673 {
 674     DWORD pid;
 675     (void)::GetWindowThreadProcessId(hwnd, &pid);
 676
 677     wxFindByPidParams *params = (wxFindByPidParams *)lParam;
 678     if ( pid == params->pid )
 679     {
 680         // remember the window we found
 681         params->hwnd = hwnd;
 682
 683         // return FALSE to stop the enumeration
 684         return FALSE;
 685     }
 686
 687     // continue enumeration
 688     return TRUE;
 689 }
 690
 691 #endif // __WIN32__
 692
 693 int wxKill(long pid, wxSignal sig, wxKillError *krc)
 694 {
 695 #ifdef __WIN32__
 696     // get the process handle to operate on
 697     HANDLE hProcess = ::OpenProcess(SYNCHRONIZE |
 698                                     PROCESS_TERMINATE |
 699                                     PROCESS_QUERY_INFORMATION,
 700                                     FALSE, // not inheritable
 701                                     (DWORD)pid);
 702     if ( hProcess == NULL )
 703     {
 704         if ( krc )
 705         {
 706             if ( ::GetLastError() == ERROR_ACCESS_DENIED )
 707             {
 708                 *krc = wxKILL_ACCESS_DENIED;
 709             }
 710             else
 711             {
 712                 *krc = wxKILL_NO_PROCESS;
 713             }
 714         }
 715
 716         return -1;
 717     }
 718
 719     bool ok = TRUE;
 720     switch ( sig )
 721     {
 722         case wxSIGKILL:
 723             // kill the process forcefully returning -1 as error code
 724             if ( !::TerminateProcess(hProcess, (UINT)-1) )
 725             {
 726                 wxLogSysError(_("Failed to kill process %d"), pid);
 727
 728                 if ( krc )
 729                 {
 730                     // this is not supposed to happen if we could open the
 731                     // process
 732                     *krc = wxKILL_ERROR;
 733                 }
 734
 735                 ok = FALSE;
 736             }
 737             break;
 738
 739         case wxSIGNONE:
 740             // do nothing, we just want to test for process existence
 741             break;
 742
 743         default:
 744             // any other signal means "terminate"
 745             {
 746                 wxFindByPidParams params;
 747                 params.pid = (DWORD)pid;
 748
 749                 // EnumWindows() has nice semantics: it returns 0 if it found
 750                 // something or if an error occured and non zero if it
 751                 // enumerated all the window
 752                 if ( !::EnumWindows(wxEnumFindByPidProc, (LPARAM)&params) )
 753                 {
 754                     // did we find any window?
 755                     if ( params.hwnd )
 756                     {
 757                         // tell the app to close
 758                         //
 759                         // NB: this is the harshest way, the app won't have
 760                         //     opportunity to save any files, for example, but
 761                         //     this is probably what we want here. If not we
 762                         //     can also use SendMesageTimeout(WM_CLOSE)
 763                         if ( !::PostMessage(params.hwnd, WM_QUIT, 0, 0) )
 764                         {
 765                             wxLogLastError(_T("PostMessage(WM_QUIT)"));
 766                         }
 767                     }
 768                     else // it was an error then
 769                     {
 770                         wxLogLastError(_T("EnumWindows"));
 771
 772                         ok = FALSE;
 773                     }
 774                 }
 775                 else // no windows for this PID
 776                 {
 777                     if ( krc )
 778                     {
 779                         *krc = wxKILL_ERROR;
 780                     }
 781
 782                     ok = FALSE;
 783                 }
 784             }
 785     }
 786
 787     // the return code
 788     DWORD rc;
 789
 790     if ( ok )
 791     {
 792         // as we wait for a short time, we can use just WaitForSingleObject()
 793         // and not MsgWaitForMultipleObjects()
 794         switch ( ::WaitForSingleObject(hProcess, 500 /* msec */) )
 795         {
 796             case WAIT_OBJECT_0:
 797                 // process terminated
 798                 if ( !::GetExitCodeProcess(hProcess, &rc) )
 799                 {
 800                     wxLogLastError(_T("GetExitCodeProcess"));
 801                 }
 802                 break;
 803
 804             default:
 805                 wxFAIL_MSG( _T("unexpected WaitForSingleObject() return") );
 806                 // fall through
 807
 808             case WAIT_FAILED:
 809                 wxLogLastError(_T("WaitForSingleObject"));
 810                 // fall through
 811
 812             case WAIT_TIMEOUT:
 813                 if ( krc )
 814                 {
 815                     *krc = wxKILL_ERROR;
 816                 }
 817
 818                 rc = STILL_ACTIVE;
 819                 break;
 820         }
 821     }
 822     else // !ok
 823     {
 824         // just to suppress the warnings about uninitialized variable
 825         rc = 0;
 826     }
 827
 828     ::CloseHandle(hProcess);
 829
 830     // the return code is the same as from Unix kill(): 0 if killed
 831     // successfully or -1 on error
 832     if ( sig == wxSIGNONE )
 833     {
 834         if ( ok && rc == STILL_ACTIVE )
 835         {
 836             // there is such process => success
 837             return 0;
 838         }
 839     }
 840     else // not SIGNONE
 841     {
 842         if ( ok && rc != STILL_ACTIVE )
 843         {
 844             // killed => success
 845             return 0;
 846         }
 847     }
 848 #else // Win15
 849     wxFAIL_MSG( _T("not implemented") );
 850 #endif // Win32/Win16
 851
 852     // error
 853     return -1;
 854 }
 855
 856 // Execute a program in an Interactive Shell
 857 bool wxShell(const wxString& command)
 858 {
 859     wxChar *shell = wxGetenv(wxT("COMSPEC"));
 860     if ( !shell )
 861         shell = wxT("\\COMMAND.COM");
 862
 863     wxString cmd;
 864     if ( !command )
 865     {
 866         // just the shell
 867         cmd = shell;
 868     }
 869     else
 870     {
 871         // pass the command to execute to the command processor
 872         cmd.Printf(wxT("%s /c %s"), shell, command.c_str());
 873     }
 874
 875     return wxExecute(cmd, TRUE /* sync */) != 0;
 876 }
 877
 878 // ----------------------------------------------------------------------------
 879 // misc
 880 // ----------------------------------------------------------------------------
 881
 882 // Get free memory in bytes, or -1 if cannot determine amount (e.g. on UNIX)
 883 long wxGetFreeMemory()
 884 {
 885 #if defined(__WIN32__) && !defined(__BORLANDC__) && !defined(__TWIN32__)
 886     MEMORYSTATUS memStatus;
 887     memStatus.dwLength = sizeof(MEMORYSTATUS);
 888     GlobalMemoryStatus(&memStatus);
 889     return memStatus.dwAvailPhys;
 890 #else
 891     return (long)GetFreeSpace(0);
 892 #endif
 893 }
 894
 895 // Emit a beeeeeep
 896 void wxBell()
 897 {
 898     ::MessageBeep((UINT)-1);        // default sound
 899 }
 900
 901 wxString wxGetOsDescription()
 902 {
 903 #ifdef __WIN32__
 904     wxString str;
 905
 906     OSVERSIONINFO info;
 907     wxZeroMemory(info);
 908
 909     info.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
 910     if ( ::GetVersionEx(&info) )
 911     {
 912         switch ( info.dwPlatformId )
 913         {
 914             case VER_PLATFORM_WIN32s:
 915                 str = _("Win32s on Windows 3.1");
 916                 break;
 917
 918             case VER_PLATFORM_WIN32_WINDOWS:
 919                 str.Printf(_("Windows 9%c"),
 920                            info.dwMinorVersion == 0 ? _T('5') : _T('8'));
 921                 if ( !wxIsEmpty(info.szCSDVersion) )
 922                 {
 923                     str << _T(" (") << info.szCSDVersion << _T(')');
 924                 }
 925                 break;
 926
 927             case VER_PLATFORM_WIN32_NT:
 928                 str.Printf(_T("Windows NT %lu.%lu (build %lu"),
 929                            info.dwMajorVersion,
 930                            info.dwMinorVersion,
 931                            info.dwBuildNumber);
 932                 if ( !wxIsEmpty(info.szCSDVersion) )
 933                 {
 934                     str << _T(", ") << info.szCSDVersion;
 935                 }
 936                 str << _T(')');
 937                 break;
 938         }
 939     }
 940     else
 941     {
 942         wxFAIL_MSG( _T("GetVersionEx() failed") ); // should never happen
 943     }
 944
 945     return str;
 946 #else // Win16
 947     return _("Windows 3.1");
 948 #endif // Win32/16
 949 }
 950
 951 int wxGetOsVersion(int *majorVsn, int *minorVsn)
 952 {
 953 #if defined(__WIN32__) && !defined(__SC__)
 954     static int ver = -1, major = -1, minor = -1;
 955
 956     if ( ver == -1 )
 957     {
 958         OSVERSIONINFO info;
 959         wxZeroMemory(info);
 960
 961         ver = wxWINDOWS;
 962         info.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
 963         if ( ::GetVersionEx(&info) )
 964         {
 965             major = info.dwMajorVersion;
 966             minor = info.dwMinorVersion;
 967
 968             switch ( info.dwPlatformId )
 969             {
 970                 case VER_PLATFORM_WIN32s:
 971                     ver = wxWIN32S;
 972                     break;
 973
 974                 case VER_PLATFORM_WIN32_WINDOWS:
 975                     ver = wxWIN95;
 976                     break;
 977
 978                 case VER_PLATFORM_WIN32_NT:
 979                     ver = wxWINDOWS_NT;
 980                     break;
 981             }
 982         }
 983     }
 984
 985     if (majorVsn && major != -1)
 986         *majorVsn = major;
 987     if (minorVsn && minor != -1)
 988         *minorVsn = minor;
 989
 990     return ver;
 991 #else // Win16
 992     int retValue = wxWINDOWS;
 993     #ifdef __WINDOWS_386__
 994         retValue = wxWIN386;
 995     #else
 996         #if !defined(__WATCOMC__) && !defined(GNUWIN32) && wxUSE_PENWINDOWS
 997             extern HANDLE g_hPenWin;
 998             retValue = g_hPenWin ? wxPENWINDOWS : wxWINDOWS;
 999         #endif
1000     #endif
1001
1002     if (majorVsn)
1003         *majorVsn = 3;
1004     if (minorVsn)
1005         *minorVsn = 1;
1006
1007     return retValue;
1008 #endif
1009 }
1010
1011 // ----------------------------------------------------------------------------
1012 // sleep functions
1013 // ----------------------------------------------------------------------------
1014
1015 #if wxUSE_GUI
1016
1017 #if wxUSE_TIMER
1018
1019 // Sleep for nSecs seconds. Attempt a Windows implementation using timers.
1020 static bool gs_inTimer = FALSE;
1021
1022 class wxSleepTimer : public wxTimer
1023 {
1024 public:
1025     virtual void Notify()
1026     {
1027         gs_inTimer = FALSE;
1028         Stop();
1029     }
1030 };
1031
1032 static wxTimer *wxTheSleepTimer = NULL;
1033
1034 void wxUsleep(unsigned long milliseconds)
1035 {
1036 #ifdef __WIN32__
1037     ::Sleep(milliseconds);
1038 #else // !Win32
1039     if (gs_inTimer)
1040         return;
1041
1042     wxTheSleepTimer = new wxSleepTimer;
1043     gs_inTimer = TRUE;
1044     wxTheSleepTimer->Start(milliseconds);
1045     while (gs_inTimer)
1046     {
1047         if (wxTheApp->Pending())
1048             wxTheApp->Dispatch();
1049     }
1050     delete wxTheSleepTimer;
1051     wxTheSleepTimer = NULL;
1052 #endif // Win32/!Win32
1053 }
1054
1055 void wxSleep(int nSecs)
1056 {
1057     if (gs_inTimer)
1058         return;
1059
1060     wxTheSleepTimer = new wxSleepTimer;
1061     gs_inTimer = TRUE;
1062     wxTheSleepTimer->Start(nSecs*1000);
1063     while (gs_inTimer)
1064     {
1065         if (wxTheApp->Pending())
1066             wxTheApp->Dispatch();
1067     }
1068     delete wxTheSleepTimer;
1069     wxTheSleepTimer = NULL;
1070 }
1071
1072 // Consume all events until no more left
1073 void wxFlushEvents()
1074 {
1075 //  wxYield();
1076 }
1077
1078 #endif // wxUSE_TIMER
1079
1080 #elif defined(__WIN32__) // wxUSE_GUI
1081
1082 void wxUsleep(unsigned long milliseconds)
1083 {
1084     ::Sleep(milliseconds);
1085 }
1086
1087 void wxSleep(int nSecs)
1088 {
1089     wxUsleep(1000*nSecs);
1090 }
1091
1092 #endif // wxUSE_GUI/!wxUSE_GUI
1093 #endif // __WXMICROWIN__
1094
1095 // ----------------------------------------------------------------------------
1096 // deprecated (in favour of wxLog) log functions
1097 // ----------------------------------------------------------------------------
1098
1099 #if WXWIN_COMPATIBILITY_2_2
1100
1101 // Output a debug mess., in a system dependent fashion.
1102 #ifndef __WXMICROWIN__
1103 void wxDebugMsg(const wxChar *fmt ...)
1104 {
1105   va_list ap;
1106   static wxChar buffer[512];
1107
1108   if (!wxTheApp->GetWantDebugOutput())
1109     return ;
1110
1111   va_start(ap, fmt);
1112
1113   wvsprintf(buffer,fmt,ap) ;
1114   OutputDebugString((LPCTSTR)buffer) ;
1115
1116   va_end(ap);
1117 }
1118
1119 // Non-fatal error: pop up message box and (possibly) continue
1120 void wxError(const wxString& msg, const wxString& title)
1121 {
1122   wxSprintf(wxBuffer, wxT("%s\nContinue?"), WXSTRINGCAST msg);
1123   if (MessageBox(NULL, (LPCTSTR)wxBuffer, (LPCTSTR)WXSTRINGCAST title,
1124              MB_ICONSTOP | MB_YESNO) == IDNO)
1125     wxExit();
1126 }
1127
1128 // Fatal error: pop up message box and abort
1129 void wxFatalError(const wxString& msg, const wxString& title)
1130 {
1131   wxSprintf(wxBuffer, wxT("%s: %s"), WXSTRINGCAST title, WXSTRINGCAST msg);
1132   FatalAppExit(0, (LPCTSTR)wxBuffer);
1133 }
1134 #endif // __WXMICROWIN__
1135
1136 #endif // WXWIN_COMPATIBILITY_2_2
1137
1138 #if wxUSE_GUI
1139
1140 // ----------------------------------------------------------------------------
1141 // functions to work with .INI files
1142 // ----------------------------------------------------------------------------
1143
1144 // Reading and writing resources (eg WIN.INI, .Xdefaults)
1145 #if wxUSE_RESOURCES
1146 bool wxWriteResource(const wxString& section, const wxString& entry, const wxString& value, const wxString& file)
1147 {
1148   if (file != wxT(""))
1149 // Don't know what the correct cast should be, but it doesn't
1150 // compile in BC++/16-bit without this cast.
1151 #if !defined(__WIN32__)
1152     return (WritePrivateProfileString((const char*) section, (const char*) entry, (const char*) value, (const char*) file) != 0);
1153 #else
1154     return (WritePrivateProfileString((LPCTSTR)WXSTRINGCAST section, (LPCTSTR)WXSTRINGCAST entry, (LPCTSTR)value, (LPCTSTR)WXSTRINGCAST file) != 0);
1155 #endif
1156   else
1157     return (WriteProfileString((LPCTSTR)WXSTRINGCAST section, (LPCTSTR)WXSTRINGCAST entry, (LPCTSTR)WXSTRINGCAST value) != 0);
1158 }
1159
1160 bool wxWriteResource(const wxString& section, const wxString& entry, float value, const wxString& file)
1161 {
1162     wxString buf;
1163     buf.Printf(wxT("%.4f"), value);
1164
1165     return wxWriteResource(section, entry, buf, file);
1166 }
1167
1168 bool wxWriteResource(const wxString& section, const wxString& entry, long value, const wxString& file)
1169 {
1170     wxString buf;
1171     buf.Printf(wxT("%ld"), value);
1172
1173     return wxWriteResource(section, entry, buf, file);
1174 }
1175
1176 bool wxWriteResource(const wxString& section, const wxString& entry, int value, const wxString& file)
1177 {
1178     wxString buf;
1179     buf.Printf(wxT("%d"), value);
1180
1181     return wxWriteResource(section, entry, buf, file);
1182 }
1183
1184 bool wxGetResource(const wxString& section, const wxString& entry, wxChar **value, const wxString& file)
1185 {
1186     static const wxChar defunkt[] = wxT("$$default");
1187     if (file != wxT(""))
1188     {
1189         int n = GetPrivateProfileString((LPCTSTR)WXSTRINGCAST section, (LPCTSTR)WXSTRINGCAST entry, (LPCTSTR)defunkt,
1190                 (LPTSTR)wxBuffer, 1000, (LPCTSTR)WXSTRINGCAST file);
1191         if (n == 0 || wxStrcmp(wxBuffer, defunkt) == 0)
1192             return FALSE;
1193     }
1194     else
1195     {
1196         int n = GetProfileString((LPCTSTR)WXSTRINGCAST section, (LPCTSTR)WXSTRINGCAST entry, (LPCTSTR)defunkt,
1197                 (LPTSTR)wxBuffer, 1000);
1198         if (n == 0 || wxStrcmp(wxBuffer, defunkt) == 0)
1199             return FALSE;
1200     }
1201     if (*value) delete[] (*value);
1202     *value = copystring(wxBuffer);
1203     return TRUE;
1204 }
1205
1206 bool wxGetResource(const wxString& section, const wxString& entry, float *value, const wxString& file)
1207 {
1208     wxChar *s = NULL;
1209     bool succ = wxGetResource(section, entry, (wxChar **)&s, file);
1210     if (succ)
1211     {
1212         *value = (float)wxStrtod(s, NULL);
1213         delete[] s;
1214         return TRUE;
1215     }
1216     else return FALSE;
1217 }
1218
1219 bool wxGetResource(const wxString& section, const wxString& entry, long *value, const wxString& file)
1220 {
1221     wxChar *s = NULL;
1222     bool succ = wxGetResource(section, entry, (wxChar **)&s, file);
1223     if (succ)
1224     {
1225         *value = wxStrtol(s, NULL, 10);
1226         delete[] s;
1227         return TRUE;
1228     }
1229     else return FALSE;
1230 }
1231
1232 bool wxGetResource(const wxString& section, const wxString& entry, int *value, const wxString& file)
1233 {
1234     wxChar *s = NULL;
1235     bool succ = wxGetResource(section, entry, (wxChar **)&s, file);
1236     if (succ)
1237     {
1238         *value = (int)wxStrtol(s, NULL, 10);
1239         delete[] s;
1240         return TRUE;
1241     }
1242     else return FALSE;
1243 }
1244 #endif // wxUSE_RESOURCES
1245
1246 // ---------------------------------------------------------------------------
1247 // helper functions for showing a "busy" cursor
1248 // ---------------------------------------------------------------------------
1249
1250 static HCURSOR gs_wxBusyCursor = 0;     // new, busy cursor
1251 static HCURSOR gs_wxBusyCursorOld = 0;  // old cursor
1252 static int gs_wxBusyCursorCount = 0;
1253
1254 extern HCURSOR wxGetCurrentBusyCursor()
1255 {
1256     return gs_wxBusyCursor;
1257 }
1258
1259 // Set the cursor to the busy cursor for all windows
1260 void wxBeginBusyCursor(wxCursor *cursor)
1261 {
1262     if ( gs_wxBusyCursorCount++ == 0 )
1263     {
1264         gs_wxBusyCursor = (HCURSOR)cursor->GetHCURSOR();
1265 #ifndef __WXMICROWIN__
1266         gs_wxBusyCursorOld = ::SetCursor(gs_wxBusyCursor);
1267 #endif
1268     }
1269     //else: nothing to do, already set
1270 }
1271
1272 // Restore cursor to normal
1273 void wxEndBusyCursor()
1274 {
1275     wxCHECK_RET( gs_wxBusyCursorCount > 0,
1276                  wxT("no matching wxBeginBusyCursor() for wxEndBusyCursor()") );
1277
1278     if ( --gs_wxBusyCursorCount == 0 )
1279     {
1280 #ifndef __WXMICROWIN__
1281         ::SetCursor(gs_wxBusyCursorOld);
1282 #endif
1283         gs_wxBusyCursorOld = 0;
1284     }
1285 }
1286
1287 // TRUE if we're between the above two calls
1288 bool wxIsBusy()
1289 {
1290   return gs_wxBusyCursorCount > 0;
1291 }
1292
1293 // Check whether this window wants to process messages, e.g. Stop button
1294 // in long calculations.
1295 bool wxCheckForInterrupt(wxWindow *wnd)
1296 {
1297     wxCHECK( wnd, FALSE );
1298
1299     MSG msg;
1300     while ( ::PeekMessage(&msg, GetHwndOf(wnd), 0, 0, PM_REMOVE) )
1301     {
1302         ::TranslateMessage(&msg);
1303         ::DispatchMessage(&msg);
1304     }
1305
1306     return TRUE;
1307 }
1308
1309 // MSW only: get user-defined resource from the .res file.
1310 // Returns NULL or newly-allocated memory, so use delete[] to clean up.
1311
1312 #ifndef __WXMICROWIN__
1313 wxChar *wxLoadUserResource(const wxString& resourceName, const wxString& resourceType)
1314 {
1315     HRSRC hResource = ::FindResource(wxGetInstance(), resourceName, resourceType);
1316     if ( hResource == 0 )
1317         return NULL;
1318
1319     HGLOBAL hData = ::LoadResource(wxGetInstance(), hResource);
1320     if ( hData == 0 )
1321         return NULL;
1322
1323     wxChar *theText = (wxChar *)::LockResource(hData);
1324     if ( !theText )
1325         return NULL;
1326
1327     // Not all compilers put a zero at the end of the resource (e.g. BC++ doesn't).
1328     // so we need to find the length of the resource.
1329     int len = ::SizeofResource(wxGetInstance(), hResource);
1330     wxChar  *s = new wxChar[len+1];
1331     wxStrncpy(s,theText,len);
1332     s[len]=0;
1333
1334     // wxChar *s = copystring(theText);
1335
1336     // Obsolete in WIN32
1337 #ifndef __WIN32__
1338     UnlockResource(hData);
1339 #endif
1340
1341     // No need??
1342     //  GlobalFree(hData);
1343
1344     return s;
1345 }
1346 #endif // __WXMICROWIN__
1347
1348 // ----------------------------------------------------------------------------
1349 // get display info
1350 // ----------------------------------------------------------------------------
1351
1352 // See also the wxGetMousePosition in window.cpp
1353 // Deprecated: use wxPoint wxGetMousePosition() instead
1354 void wxGetMousePosition( int* x, int* y )
1355 {
1356     POINT pt;
1357     GetCursorPos( & pt );
1358     if ( x ) *x = pt.x;
1359     if ( y ) *y = pt.y;
1360 };
1361
1362 // Return TRUE if we have a colour display
1363 bool wxColourDisplay()
1364 {
1365 #ifdef __WXMICROWIN__
1366     // MICROWIN_TODO
1367     return TRUE;
1368 #else
1369     // this function is called from wxDC ctor so it is called a *lot* of times
1370     // hence we optimize it a bit but doign the check only once
1371     //
1372     // this should be MT safe as only the GUI thread (holding the GUI mutex)
1373     // can call us
1374     static int s_isColour = -1;
1375
1376     if ( s_isColour == -1 )
1377     {
1378         ScreenHDC dc;
1379         int noCols = ::GetDeviceCaps(dc, NUMCOLORS);
1380
1381         s_isColour = (noCols == -1) || (noCols > 2);
1382     }
1383
1384     return s_isColour != 0;
1385 #endif
1386 }
1387
1388 // Returns depth of screen
1389 int wxDisplayDepth()
1390 {
1391     ScreenHDC dc;
1392     return GetDeviceCaps(dc, PLANES) * GetDeviceCaps(dc, BITSPIXEL);
1393 }
1394
1395 // Get size of display
1396 void wxDisplaySize(int *width, int *height)
1397 {
1398 #ifdef __WXMICROWIN__
1399     RECT rect;
1400     HWND hWnd = GetDesktopWindow();
1401     ::GetWindowRect(hWnd, & rect);
1402
1403     if ( width )
1404         *width = rect.right - rect.left;
1405     if ( height )
1406         *height = rect.bottom - rect.top;
1407 #else // !__WXMICROWIN__
1408     ScreenHDC dc;
1409
1410     if ( width )
1411         *width = ::GetDeviceCaps(dc, HORZRES);
1412     if ( height )
1413         *height = ::GetDeviceCaps(dc, VERTRES);
1414 #endif // __WXMICROWIN__/!__WXMICROWIN__
1415 }
1416
1417 void wxDisplaySizeMM(int *width, int *height)
1418 {
1419 #ifdef __WXMICROWIN__
1420     // MICROWIN_TODO
1421     if ( width )
1422         *width = 0;
1423     if ( height )
1424         *height = 0;
1425 #else
1426     ScreenHDC dc;
1427
1428     if ( width )
1429         *width = ::GetDeviceCaps(dc, HORZSIZE);
1430     if ( height )
1431         *height = ::GetDeviceCaps(dc, VERTSIZE);
1432 #endif
1433 }
1434
1435 void wxClientDisplayRect(int *x, int *y, int *width, int *height)
1436 {
1437 #if defined(__WIN16__) || defined(__WXMICROWIN__)
1438     *x = 0; *y = 0;
1439     wxDisplaySize(width, height);
1440 #else
1441     // Determine the desktop dimensions minus the taskbar and any other
1442     // special decorations...
1443     RECT r;
1444
1445     SystemParametersInfo(SPI_GETWORKAREA, 0, &r, 0);
1446     if (x)      *x = r.left;
1447     if (y)      *y = r.top;
1448     if (width)  *width = r.right - r.left;
1449     if (height) *height = r.bottom - r.top;
1450 #endif
1451 }
1452
1453 // ---------------------------------------------------------------------------
1454 // window information functions
1455 // ---------------------------------------------------------------------------
1456
1457 wxString WXDLLEXPORT wxGetWindowText(WXHWND hWnd)
1458 {
1459     wxString str;
1460
1461     if ( hWnd )
1462     {
1463         int len = GetWindowTextLength((HWND)hWnd) + 1;
1464         ::GetWindowText((HWND)hWnd, str.GetWriteBuf(len), len);
1465         str.UngetWriteBuf();
1466     }
1467
1468     return str;
1469 }
1470
1471 wxString WXDLLEXPORT wxGetWindowClass(WXHWND hWnd)
1472 {
1473     wxString str;
1474
1475     // MICROWIN_TODO
1476 #ifndef __WXMICROWIN__
1477     if ( hWnd )
1478     {
1479         int len = 256; // some starting value
1480
1481         for ( ;; )
1482         {
1483             int count = ::GetClassName((HWND)hWnd, str.GetWriteBuf(len), len);
1484
1485             str.UngetWriteBuf();
1486             if ( count == len )
1487             {
1488                 // the class name might have been truncated, retry with larger
1489                 // buffer
1490                 len *= 2;
1491             }
1492             else
1493             {
1494                 break;
1495             }
1496         }
1497     }
1498 #endif // !__WXMICROWIN__
1499
1500     return str;
1501 }
1502
1503 WXWORD WXDLLEXPORT wxGetWindowId(WXHWND hWnd)
1504 {
1505 #ifndef __WIN32__
1506     return (WXWORD)GetWindowWord((HWND)hWnd, GWW_ID);
1507 #else // Win32
1508     return (WXWORD)GetWindowLong((HWND)hWnd, GWL_ID);
1509 #endif // Win16/32
1510 }
1511
1512 // ----------------------------------------------------------------------------
1513 // Metafile helpers
1514 // ----------------------------------------------------------------------------
1515
1516 extern void PixelToHIMETRIC(LONG *x, LONG *y)
1517 {
1518     ScreenHDC hdcRef;
1519
1520     int iWidthMM = GetDeviceCaps(hdcRef, HORZSIZE),
1521         iHeightMM = GetDeviceCaps(hdcRef, VERTSIZE),
1522         iWidthPels = GetDeviceCaps(hdcRef, HORZRES),
1523         iHeightPels = GetDeviceCaps(hdcRef, VERTRES);
1524
1525     *x *= (iWidthMM * 100);
1526     *x /= iWidthPels;
1527     *y *= (iHeightMM * 100);
1528     *y /= iHeightPels;
1529 }
1530
1531 extern void HIMETRICToPixel(LONG *x, LONG *y)
1532 {
1533     ScreenHDC hdcRef;
1534
1535     int iWidthMM = GetDeviceCaps(hdcRef, HORZSIZE),
1536         iHeightMM = GetDeviceCaps(hdcRef, VERTSIZE),
1537         iWidthPels = GetDeviceCaps(hdcRef, HORZRES),
1538         iHeightPels = GetDeviceCaps(hdcRef, VERTRES);
1539
1540     *x *= iWidthPels;
1541     *x /= (iWidthMM * 100);
1542     *y *= iHeightPels;
1543     *y /= (iHeightMM * 100);
1544 }
1545
1546 #endif // wxUSE_GUI
1547
1548 #ifdef __WXMICROWIN__
1549 int wxGetOsVersion(int *majorVsn, int *minorVsn)
1550 {
1551     // MICROWIN_TODO
1552     if (majorVsn) *majorVsn = 0;
1553     if (minorVsn) *minorVsn = 0;
1554     return wxUNIX;
1555 }
1556 #endif // __WXMICROWIN__
1557
1558 // ----------------------------------------------------------------------------
1559 // Win32 codepage conversion functions
1560 // ----------------------------------------------------------------------------
1561
1562 #if defined(__WIN32__) && !defined(__WXMICROWIN__)
1563
1564 // wxGetNativeFontEncoding() doesn't exist neither in wxBase nor in wxUniv
1565 #if wxUSE_GUI && !defined(__WXUNIVERSAL__)
1566
1567 #include "wx/fontmap.h"
1568
1569 // VZ: the new version of wxCharsetToCodepage() is more politically correct
1570 //     and should work on other Windows versions as well but the old version is
1571 //     still needed for !wxUSE_FONTMAP || !wxUSE_GUI case
1572
1573 extern long wxEncodingToCodepage(wxFontEncoding encoding)
1574 {
1575     // translate encoding into the Windows CHARSET
1576     wxNativeEncodingInfo natveEncInfo;
1577     if ( !wxGetNativeFontEncoding(encoding, &natveEncInfo) )
1578         return -1;
1579
1580     // translate CHARSET to code page
1581     CHARSETINFO csetInfo;
1582     if ( !::TranslateCharsetInfo((DWORD *)(DWORD)natveEncInfo.charset,
1583                                  &csetInfo,
1584                                  TCI_SRCCHARSET) )
1585     {
1586         wxLogLastError(_T("TranslateCharsetInfo(TCI_SRCCHARSET)"));
1587
1588         return -1;
1589     }
1590
1591     return csetInfo.ciACP;
1592 }
1593
1594 #if wxUSE_FONTMAP
1595
1596 extern long wxCharsetToCodepage(const wxChar *name)
1597 {
1598     // first get the font encoding for this charset
1599     if ( !name )
1600         return -1;
1601
1602     wxFontEncoding enc = wxFontMapper::Get()->CharsetToEncoding(name, FALSE);
1603     if ( enc == wxFONTENCODING_SYSTEM )
1604         return -1;
1605
1606     // the use the helper function
1607     return wxEncodingToCodepage(enc);
1608 }
1609
1610 #endif // wxUSE_FONTMAP
1611
1612 #endif // wxUSE_GUI
1613
1614 // include old wxCharsetToCodepage() by OK if needed
1615 #if !wxUSE_GUI || !wxUSE_FONTMAP
1616
1617 #include "wx/msw/registry.h"
1618
1619 // this should work if Internet Exploiter is installed
1620 extern long wxCharsetToCodepage(const wxChar *name)
1621 {
1622     if (!name)
1623         return GetACP();
1624
1625     long CP=-1;
1626
1627     wxString cn(name);
1628     do {
1629         wxString path(wxT("MIME\\Database\\Charset\\"));
1630         path += cn;
1631         wxRegKey key(wxRegKey::HKCR, path);
1632
1633         if (!key.Exists()) break;
1634
1635         // two cases: either there's an AliasForCharset string,
1636         // or there are Codepage and InternetEncoding dwords.
1637         // The InternetEncoding gives us the actual encoding,
1638         // the Codepage just says which Windows character set to
1639         // use when displaying the data.
1640         if (key.HasValue(wxT("InternetEncoding")) &&
1641             key.QueryValue(wxT("InternetEncoding"), &CP)) break;
1642
1643         // no encoding, see if it's an alias
1644         if (!key.HasValue(wxT("AliasForCharset")) ||
1645             !key.QueryValue(wxT("AliasForCharset"), cn)) break;
1646     } while (1);
1647
1648     return CP;
1649 }
1650
1651 #endif // !wxUSE_GUI || !wxUSE_FONTMAP
1652
1653 #endif // Win32
1654