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 #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 #include "wx/msw/private.h"     // includes <windows.h>
  42
  43 #ifdef __GNUWIN32_OLD__
  44     // apparently we need to include winsock.h to get WSADATA and other stuff
  45     // used in wxGetFullHostName() with the old mingw32 versions
  46     #include <winsock.h>
  47 #endif
  48
  49 #include "wx/timer.h"
  50
  51 #if !defined(__GNUWIN32__) && !defined(__SALFORDC__) && !defined(__WXMICROWIN__)
  52     #include <direct.h>
  53
  54     #ifndef __MWERKS__
  55         #include <dos.h>
  56     #endif
  57 #endif  //GNUWIN32
  58
  59 #if defined(__CYGWIN__)
  60     #include <sys/unistd.h>
  61     #include <sys/stat.h>
  62     #include <sys/cygwin.h> // for cygwin_conv_to_full_win32_path()
  63 #endif  //GNUWIN32
  64
  65 #ifdef __BORLANDC__ // Please someone tell me which version of Borland needs
  66                     // this (3.1 I believe) and how to test for it.
  67                     // If this works for Borland 4.0 as well, then no worries.
  68     #include <dir.h>
  69 #endif
  70
  71 // VZ: there is some code using NetXXX() functions to get the full user name:
  72 //     I don't think it's a good idea because they don't work under Win95 and
  73 //     seem to return the same as wxGetUserId() under NT. If you really want
  74 //     to use them, just #define USE_NET_API
  75 #undef USE_NET_API
  76
  77 #ifdef USE_NET_API
  78     #include <lm.h>
  79 #endif // USE_NET_API
  80
  81 #if defined(__WIN32__) && !defined(__WXMICROWIN__)
  82     #ifndef __UNIX__
  83         #include <io.h>
  84     #endif
  85
  86     #ifndef __GNUWIN32__
  87         #include <shellapi.h>
  88     #endif
  89 #endif
  90
  91 #ifndef __WATCOMC__
  92     #if !(defined(_MSC_VER) && (_MSC_VER > 800))
  93         #include <errno.h>
  94     #endif
  95 #endif
  96
  97 //// BEGIN for console support: VC++ only
  98 #ifdef __VISUALC__
  99
 100 #include "wx/msw/msvcrt.h"
 101
 102 #include <fcntl.h>
 103
 104 #include "wx/ioswrap.h"
 105
 106 /* Need to undef new if including crtdbg.h */
 107 #  ifdef new
 108 #  undef new
 109 #  endif
 110
 111 #ifndef __WIN16__
 112 #  include <crtdbg.h>
 113 #endif
 114
 115 #  if defined(__WXDEBUG__) && wxUSE_GLOBAL_MEMORY_OPERATORS && wxUSE_DEBUG_NEW_ALWAYS
 116 #  define new new(__TFILE__,__LINE__)
 117 #  endif
 118
 119 #endif
 120   // __VISUALC__
 121 /// END for console support
 122
 123 // ----------------------------------------------------------------------------
 124 // constants
 125 // ----------------------------------------------------------------------------
 126
 127 // In the WIN.INI file
 128 static const wxChar WX_SECTION[] = wxT("wxWindows");
 129 static const wxChar eUSERNAME[]  = wxT("UserName");
 130
 131 // these are only used under Win16
 132 #if !defined(__WIN32__) && !defined(__WXMICROWIN__)
 133 static const wxChar eHOSTNAME[]  = wxT("HostName");
 134 static const wxChar eUSERID[]    = wxT("UserId");
 135 #endif // !Win32
 136
 137 #ifndef __WXMICROWIN__
 138
 139 // ============================================================================
 140 // implementation
 141 // ============================================================================
 142
 143 // ----------------------------------------------------------------------------
 144 // get host name and related
 145 // ----------------------------------------------------------------------------
 146
 147 // Get hostname only (without domain name)
 148 bool wxGetHostName(wxChar *buf, int maxSize)
 149 {
 150 #if defined(__WIN32__) && !defined(__WXMICROWIN__)
 151     DWORD nSize = maxSize;
 152     if ( !::GetComputerName(buf, &nSize) )
 153     {
 154         wxLogLastError(wxT("GetComputerName"));
 155
 156         return FALSE;
 157     }
 158
 159     return TRUE;
 160 #else
 161     wxChar *sysname;
 162     const wxChar *default_host = wxT("noname");
 163
 164     if ((sysname = wxGetenv(wxT("SYSTEM_NAME"))) == NULL) {
 165         GetProfileString(WX_SECTION, eHOSTNAME, default_host, buf, maxSize - 1);
 166     } else
 167         wxStrncpy(buf, sysname, maxSize - 1);
 168     buf[maxSize] = wxT('\0');
 169     return *buf ? TRUE : FALSE;
 170 #endif
 171 }
 172
 173 // get full hostname (with domain name if possible)
 174 bool wxGetFullHostName(wxChar *buf, int maxSize)
 175 {
 176 #if defined(__WIN32__) && !defined(__WXMICROWIN__) && ! (defined(__GNUWIN32__) && !defined(__MINGW32__))
 177     // TODO should use GetComputerNameEx() when available
 178
 179     // the idea is that if someone had set wxUSE_SOCKETS to 0 the code
 180     // shouldn't use winsock.dll (a.k.a. ws2_32.dll) at all so only use this
 181     // code if we link with it anyhow
 182 #if wxUSE_SOCKETS
 183
 184     WSADATA wsa;
 185     if ( WSAStartup(MAKEWORD(1, 1), &wsa) == 0 )
 186     {
 187         wxString host;
 188         char bufA[256];
 189         if ( gethostname(bufA, WXSIZEOF(bufA)) == 0 )
 190         {
 191             // gethostname() won't usually include the DNS domain name, for
 192             // this we need to work a bit more
 193             if ( !strchr(bufA, '.') )
 194             {
 195                 struct hostent *pHostEnt =  gethostbyname(bufA);
 196
 197                 if ( pHostEnt )
 198                 {
 199                     // Windows will use DNS internally now
 200                     pHostEnt = gethostbyaddr(pHostEnt->h_addr, 4, AF_INET);
 201                 }
 202
 203                 if ( pHostEnt )
 204                 {
 205                     host = wxString::FromAscii(pHostEnt->h_name);
 206                 }
 207             }
 208         }
 209
 210         WSACleanup();
 211
 212         if ( !host.empty() )
 213         {
 214             wxStrncpy(buf, host, maxSize);
 215
 216             return TRUE;
 217         }
 218     }
 219
 220 #endif // wxUSE_SOCKETS
 221
 222 #endif // Win32
 223
 224     return wxGetHostName(buf, maxSize);
 225 }
 226
 227 // Get user ID e.g. jacs
 228 bool wxGetUserId(wxChar *buf, int maxSize)
 229 {
 230 #if 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 wxUSE_PENWINDOWS && !defined(__WATCOMC__) && !defined(__GNUWIN32__)
 269     extern HANDLE g_hPenWin; // PenWindows Running?
 270     if (g_hPenWin)
 271     {
 272         // PenWindows Does have a user concept!
 273         // Get the current owner of the recognizer
 274         GetPrivateProfileString("Current", "User", default_name, wxBuffer, maxSize - 1, "PENWIN.INI");
 275         strncpy(buf, wxBuffer, maxSize - 1);
 276     }
 277     else
 278 #endif
 279     {
 280 #ifdef USE_NET_API
 281         CHAR szUserName[256];
 282         if ( !wxGetUserId(szUserName, WXSIZEOF(szUserName)) )
 283             return FALSE;
 284
 285         // TODO how to get the domain name?
 286         CHAR *szDomain = "";
 287
 288         // the code is based on the MSDN example (also see KB article Q119670)
 289         WCHAR wszUserName[256];          // Unicode user name
 290         WCHAR wszDomain[256];
 291         LPBYTE ComputerName;
 292
 293         USER_INFO_2 *ui2;         // User structure
 294
 295         // Convert ANSI user name and domain to Unicode
 296         MultiByteToWideChar( CP_ACP, 0, szUserName, strlen(szUserName)+1,
 297                 wszUserName, WXSIZEOF(wszUserName) );
 298         MultiByteToWideChar( CP_ACP, 0, szDomain, strlen(szDomain)+1,
 299                 wszDomain, WXSIZEOF(wszDomain) );
 300
 301         // Get the computer name of a DC for the domain.
 302         if ( NetGetDCName( NULL, wszDomain, &ComputerName ) != NERR_Success )
 303         {
 304             wxLogError(wxT("Can not find domain controller"));
 305
 306             goto error;
 307         }
 308
 309         // Look up the user on the DC
 310         NET_API_STATUS status = NetUserGetInfo( (LPWSTR)ComputerName,
 311                 (LPWSTR)&wszUserName,
 312                 2, // level - we want USER_INFO_2
 313                 (LPBYTE *) &ui2 );
 314         switch ( status )
 315         {
 316             case NERR_Success:
 317                 // ok
 318                 break;
 319
 320             case NERR_InvalidComputer:
 321                 wxLogError(wxT("Invalid domain controller name."));
 322
 323                 goto error;
 324
 325             case NERR_UserNotFound:
 326                 wxLogError(wxT("Invalid user name '%s'."), szUserName);
 327
 328                 goto error;
 329
 330             default:
 331                 wxLogSysError(wxT("Can't get information about user"));
 332
 333                 goto error;
 334         }
 335
 336         // Convert the Unicode full name to ANSI
 337         WideCharToMultiByte( CP_ACP, 0, ui2->usri2_full_name, -1,
 338                 buf, maxSize, NULL, NULL );
 339
 340         return TRUE;
 341
 342 error:
 343         wxLogError(wxT("Couldn't look up full user name."));
 344
 345         return FALSE;
 346 #else  // !USE_NET_API
 347         // Could use NIS, MS-Mail or other site specific programs
 348         // Use wxWindows configuration data
 349         bool ok = GetProfileString(WX_SECTION, eUSERNAME, wxT(""), buf, maxSize - 1) != 0;
 350         if ( !ok )
 351         {
 352             ok = wxGetUserId(buf, maxSize);
 353         }
 354
 355         if ( !ok )
 356         {
 357             wxStrncpy(buf, wxT("Unknown User"), maxSize);
 358         }
 359 #endif // Win32/16
 360     }
 361
 362     return TRUE;
 363 }
 364
 365 const wxChar* wxGetHomeDir(wxString *pstr)
 366 {
 367   wxString& strDir = *pstr;
 368
 369   #if defined(__UNIX__)
 370     const wxChar *szHome = wxGetenv("HOME");
 371     if ( szHome == NULL ) {
 372       // we're homeless...
 373       wxLogWarning(_("can't find user's HOME, using current directory."));
 374       strDir = wxT(".");
 375     }
 376     else
 377        strDir = szHome;
 378
 379     // add a trailing slash if needed
 380     if ( strDir.Last() != wxT('/') )
 381       strDir << wxT('/');
 382
 383     #ifdef __CYGWIN__
 384       // Cygwin returns unix type path but that does not work well
 385       static wxChar windowsPath[MAX_PATH];
 386       cygwin_conv_to_full_win32_path(strDir, windowsPath);
 387       strDir = windowsPath;
 388     #endif
 389   #else   // Windows
 390     #ifdef  __WIN32__
 391       strDir.clear();
 392
 393       // If we have a valid HOME directory, as is used on many machines that
 394       // have unix utilities on them, we should use that.
 395       const wxChar *szHome = wxGetenv(wxT("HOME"));
 396
 397       if ( szHome != NULL )
 398       {
 399         strDir = szHome;
 400       }
 401       else // no HOME, try HOMEDRIVE/PATH
 402       {
 403           szHome = wxGetenv(wxT("HOMEDRIVE"));
 404           if ( szHome != NULL )
 405             strDir << szHome;
 406           szHome = wxGetenv(wxT("HOMEPATH"));
 407
 408           if ( szHome != NULL )
 409           {
 410             strDir << szHome;
 411
 412             // the idea is that under NT these variables have default values
 413             // of "%systemdrive%:" and "\\". As we don't want to create our
 414             // config files in the root directory of the system drive, we will
 415             // create it in our program's dir. However, if the user took care
 416             // to set HOMEPATH to something other than "\\", we suppose that he
 417             // knows what he is doing and use the supplied value.
 418             if ( wxStrcmp(szHome, wxT("\\")) == 0 )
 419               strDir.clear();
 420           }
 421       }
 422
 423       if ( strDir.empty() )
 424       {
 425           // If we have a valid USERPROFILE directory, as is the case in
 426           // Windows NT, 2000 and XP, we should use that as our home directory.
 427           szHome = wxGetenv(wxT("USERPROFILE"));
 428
 429           if ( szHome != NULL )
 430             strDir = szHome;
 431       }
 432
 433       if ( !strDir.empty() )
 434       {
 435           return strDir.c_str();
 436       }
 437       //else: fall back to the prograrm directory
 438     #else   // Win16
 439       // Win16 has no idea about home, so use the executable directory instead
 440     #endif  // WIN16/32
 441
 442     // 260 was taken from windef.h
 443     #ifndef MAX_PATH
 444       #define MAX_PATH  260
 445     #endif
 446
 447     wxString strPath;
 448     ::GetModuleFileName(::GetModuleHandle(NULL),
 449                         strPath.GetWriteBuf(MAX_PATH), MAX_PATH);
 450     strPath.UngetWriteBuf();
 451
 452     // extract the dir name
 453     wxSplitPath(strPath, &strDir, NULL, NULL);
 454
 455   #endif  // UNIX/Win
 456
 457   return strDir.c_str();
 458 }
 459
 460 wxChar *wxGetUserHome(const wxString& WXUNUSED(user))
 461 {
 462     // VZ: the old code here never worked for user != "" anyhow! Moreover, it
 463     //     returned sometimes a malloc()'d pointer, sometimes a pointer to a
 464     //     static buffer and sometimes I don't even know what.
 465     static wxString s_home;
 466
 467     return (wxChar *)wxGetHomeDir(&s_home);
 468 }
 469
 470 bool wxDirExists(const wxString& dir)
 471 {
 472 #ifdef __WXMICROWIN__
 473     return wxPathExist(dir);
 474 #elif defined(__WIN32__)
 475     DWORD attribs = GetFileAttributes(dir);
 476     return ((attribs != (DWORD)-1) && (attribs & FILE_ATTRIBUTE_DIRECTORY));
 477 #else // Win16
 478     #ifdef __BORLANDC__
 479         struct ffblk fileInfo;
 480     #else
 481         struct find_t fileInfo;
 482     #endif
 483     // In Borland findfirst has a different argument
 484     // ordering from _dos_findfirst. But _dos_findfirst
 485     // _should_ be ok in both MS and Borland... why not?
 486     #ifdef __BORLANDC__
 487         return (findfirst(dir, &fileInfo, _A_SUBDIR) == 0 &&
 488                (fileInfo.ff_attrib & _A_SUBDIR) != 0);
 489     #else
 490         return (_dos_findfirst(dir, _A_SUBDIR, &fileInfo) == 0) &&
 491                ((fileInfo.attrib & _A_SUBDIR) != 0);
 492     #endif
 493 #endif // Win32/16
 494 }
 495
 496 bool wxGetDiskSpace(const wxString& path, wxLongLong *pTotal, wxLongLong *pFree)
 497 {
 498     if ( path.empty() )
 499         return FALSE;
 500
 501 // old w32api don't have ULARGE_INTEGER
 502 #if defined(__WIN32__) && \
 503     (!defined(__GNUWIN32__) || wxCHECK_W32API_VERSION( 0, 3 ))
 504     // GetDiskFreeSpaceEx() is not available under original Win95, check for
 505     // it
 506     typedef BOOL (WINAPI *GetDiskFreeSpaceEx_t)(LPCTSTR,
 507                                                 PULARGE_INTEGER,
 508                                                 PULARGE_INTEGER,
 509                                                 PULARGE_INTEGER);
 510
 511     GetDiskFreeSpaceEx_t
 512         pGetDiskFreeSpaceEx = (GetDiskFreeSpaceEx_t)::GetProcAddress
 513                               (
 514                                 ::GetModuleHandle(_T("kernel32.dll")),
 515 #if wxUSE_UNICODE
 516                                 "GetDiskFreeSpaceExW"
 517 #else
 518                                 "GetDiskFreeSpaceExA"
 519 #endif
 520                               );
 521
 522     if ( pGetDiskFreeSpaceEx )
 523     {
 524         ULARGE_INTEGER bytesFree, bytesTotal;
 525
 526         // may pass the path as is, GetDiskFreeSpaceEx() is smart enough
 527         if ( !pGetDiskFreeSpaceEx(path,
 528                                   &bytesFree,
 529                                   &bytesTotal,
 530                                   NULL) )
 531         {
 532             wxLogLastError(_T("GetDiskFreeSpaceEx"));
 533
 534             return FALSE;
 535         }
 536
 537         // ULARGE_INTEGER is a union of a 64 bit value and a struct containing
 538         // two 32 bit fields which may be or may be not named - try to make it
 539         // compile in all cases
 540 #if defined(__BORLANDC__) && !defined(_ANONYMOUS_STRUCT)
 541         #define UL(ul) ul.u
 542 #else // anon union
 543         #define UL(ul) ul
 544 #endif
 545         if ( pTotal )
 546         {
 547             *pTotal = wxLongLong(UL(bytesTotal).HighPart, UL(bytesTotal).LowPart);
 548         }
 549
 550         if ( pFree )
 551         {
 552             *pFree = wxLongLong(UL(bytesFree).HighPart, UL(bytesFree).LowPart);
 553         }
 554     }
 555     else
 556 #endif // Win32
 557     {
 558         // there's a problem with drives larger than 2GB, GetDiskFreeSpaceEx()
 559         // should be used instead - but if it's not available, fall back on
 560         // GetDiskFreeSpace() nevertheless...
 561
 562         DWORD lSectorsPerCluster,
 563               lBytesPerSector,
 564               lNumberOfFreeClusters,
 565               lTotalNumberOfClusters;
 566
 567         // FIXME: this is wrong, we should extract the root drive from path
 568         //        instead, but this is the job for wxFileName...
 569         if ( !::GetDiskFreeSpace(path,
 570                                  &lSectorsPerCluster,
 571                                  &lBytesPerSector,
 572                                  &lNumberOfFreeClusters,
 573                                  &lTotalNumberOfClusters) )
 574         {
 575             wxLogLastError(_T("GetDiskFreeSpace"));
 576
 577             return FALSE;
 578         }
 579
 580         wxLongLong lBytesPerCluster = lSectorsPerCluster;
 581         lBytesPerCluster *= lBytesPerSector;
 582
 583         if ( pTotal )
 584         {
 585             *pTotal = lBytesPerCluster;
 586             *pTotal *= lTotalNumberOfClusters;
 587         }
 588
 589         if ( pFree )
 590         {
 591             *pFree = lBytesPerCluster;
 592             *pFree *= lNumberOfFreeClusters;
 593         }
 594     }
 595
 596     return TRUE;
 597 }
 598
 599 // ----------------------------------------------------------------------------
 600 // env vars
 601 // ----------------------------------------------------------------------------
 602
 603 bool wxGetEnv(const wxString& var, wxString *value)
 604 {
 605 #ifdef __WIN16__
 606     const wxChar* ret = wxGetenv(var);
 607     if ( !ret )
 608         return FALSE;
 609
 610     if ( value )
 611     {
 612         *value = ret;
 613     }
 614
 615     return TRUE;
 616 #else // Win32
 617     // first get the size of the buffer
 618     DWORD dwRet = ::GetEnvironmentVariable(var, NULL, 0);
 619     if ( !dwRet )
 620     {
 621         // this means that there is no such variable
 622         return FALSE;
 623     }
 624
 625     if ( value )
 626     {
 627         (void)::GetEnvironmentVariable(var, value->GetWriteBuf(dwRet), dwRet);
 628         value->UngetWriteBuf();
 629     }
 630
 631     return TRUE;
 632 #endif // Win16/32
 633 }
 634
 635 bool wxSetEnv(const wxString& var, const wxChar *value)
 636 {
 637     // some compilers have putenv() or _putenv() or _wputenv() but it's better
 638     // to always use Win32 function directly instead of dealing with them
 639 #if defined(__WIN32__)
 640     if ( !::SetEnvironmentVariable(var, value) )
 641     {
 642         wxLogLastError(_T("SetEnvironmentVariable"));
 643
 644         return FALSE;
 645     }
 646
 647     return TRUE;
 648 #else // no way to set env vars
 649     return FALSE;
 650 #endif
 651 }
 652
 653 // ----------------------------------------------------------------------------
 654 // process management
 655 // ----------------------------------------------------------------------------
 656
 657 // structure used to pass parameters from wxKill() to wxEnumFindByPidProc()
 658 struct wxFindByPidParams
 659 {
 660     wxFindByPidParams() { hwnd = 0; pid = 0; }
 661
 662     // the HWND used to return the result
 663     HWND hwnd;
 664
 665     // the PID we're looking from
 666     DWORD pid;
 667
 668     DECLARE_NO_COPY_CLASS(wxFindByPidParams)
 669 };
 670
 671 // wxKill helper: EnumWindows() callback which is used to find the first (top
 672 // level) window belonging to the given process
 673 BOOL CALLBACK wxEnumFindByPidProc(HWND hwnd, LPARAM lParam)
 674 {
 675     DWORD pid;
 676     (void)::GetWindowThreadProcessId(hwnd, &pid);
 677
 678     wxFindByPidParams *params = (wxFindByPidParams *)lParam;
 679     if ( pid == params->pid )
 680     {
 681         // remember the window we found
 682         params->hwnd = hwnd;
 683
 684         // return FALSE to stop the enumeration
 685         return FALSE;
 686     }
 687
 688     // continue enumeration
 689     return TRUE;
 690 }
 691
 692 int wxKill(long pid, wxSignal sig, wxKillError *krc)
 693 {
 694     // get the process handle to operate on
 695     HANDLE hProcess = ::OpenProcess(SYNCHRONIZE |
 696                                     PROCESS_TERMINATE |
 697                                     PROCESS_QUERY_INFORMATION,
 698                                     FALSE, // not inheritable
 699                                     (DWORD)pid);
 700     if ( hProcess == NULL )
 701     {
 702         if ( krc )
 703         {
 704             if ( ::GetLastError() == ERROR_ACCESS_DENIED )
 705             {
 706                 *krc = wxKILL_ACCESS_DENIED;
 707             }
 708             else
 709             {
 710                 *krc = wxKILL_NO_PROCESS;
 711             }
 712         }
 713
 714         return -1;
 715     }
 716
 717     bool ok = TRUE;
 718     switch ( sig )
 719     {
 720         case wxSIGKILL:
 721             // kill the process forcefully returning -1 as error code
 722             if ( !::TerminateProcess(hProcess, (UINT)-1) )
 723             {
 724                 wxLogSysError(_("Failed to kill process %d"), pid);
 725
 726                 if ( krc )
 727                 {
 728                     // this is not supposed to happen if we could open the
 729                     // process
 730                     *krc = wxKILL_ERROR;
 731                 }
 732
 733                 ok = FALSE;
 734             }
 735             break;
 736
 737         case wxSIGNONE:
 738             // do nothing, we just want to test for process existence
 739             break;
 740
 741         default:
 742             // any other signal means "terminate"
 743             {
 744                 wxFindByPidParams params;
 745                 params.pid = (DWORD)pid;
 746
 747                 // EnumWindows() has nice semantics: it returns 0 if it found
 748                 // something or if an error occured and non zero if it
 749                 // enumerated all the window
 750                 if ( !::EnumWindows(wxEnumFindByPidProc, (LPARAM)&params) )
 751                 {
 752                     // did we find any window?
 753                     if ( params.hwnd )
 754                     {
 755                         // tell the app to close
 756                         //
 757                         // NB: this is the harshest way, the app won't have
 758                         //     opportunity to save any files, for example, but
 759                         //     this is probably what we want here. If not we
 760                         //     can also use SendMesageTimeout(WM_CLOSE)
 761                         if ( !::PostMessage(params.hwnd, WM_QUIT, 0, 0) )
 762                         {
 763                             wxLogLastError(_T("PostMessage(WM_QUIT)"));
 764                         }
 765                     }
 766                     else // it was an error then
 767                     {
 768                         wxLogLastError(_T("EnumWindows"));
 769
 770                         ok = FALSE;
 771                     }
 772                 }
 773                 else // no windows for this PID
 774                 {
 775                     if ( krc )
 776                     {
 777                         *krc = wxKILL_ERROR;
 778                     }
 779
 780                     ok = FALSE;
 781                 }
 782             }
 783     }
 784
 785     // the return code
 786     DWORD rc;
 787
 788     if ( ok )
 789     {
 790         // as we wait for a short time, we can use just WaitForSingleObject()
 791         // and not MsgWaitForMultipleObjects()
 792         switch ( ::WaitForSingleObject(hProcess, 500 /* msec */) )
 793         {
 794             case WAIT_OBJECT_0:
 795                 // process terminated
 796                 if ( !::GetExitCodeProcess(hProcess, &rc) )
 797                 {
 798                     wxLogLastError(_T("GetExitCodeProcess"));
 799                 }
 800                 break;
 801
 802             default:
 803                 wxFAIL_MSG( _T("unexpected WaitForSingleObject() return") );
 804                 // fall through
 805
 806             case WAIT_FAILED:
 807                 wxLogLastError(_T("WaitForSingleObject"));
 808                 // fall through
 809
 810             case WAIT_TIMEOUT:
 811                 if ( krc )
 812                 {
 813                     *krc = wxKILL_ERROR;
 814                 }
 815
 816                 rc = STILL_ACTIVE;
 817                 break;
 818         }
 819     }
 820     else // !ok
 821     {
 822         // just to suppress the warnings about uninitialized variable
 823         rc = 0;
 824     }
 825
 826     ::CloseHandle(hProcess);
 827
 828     // the return code is the same as from Unix kill(): 0 if killed
 829     // successfully or -1 on error
 830     //
 831     // be careful to interpret rc correctly: for wxSIGNONE we return success if
 832     // the process exists, for all the other sig values -- if it doesn't
 833     if ( ok &&
 834             ((sig == wxSIGNONE) == (rc == STILL_ACTIVE)) )
 835     {
 836         if ( krc )
 837         {
 838             *krc = wxKILL_OK;
 839         }
 840
 841         return 0;
 842     }
 843
 844     // error
 845     return -1;
 846 }
 847
 848 // Execute a program in an Interactive Shell
 849 bool wxShell(const wxString& command)
 850 {
 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 }
 869
 870 // Shutdown or reboot the PC
 871 bool wxShutdown(wxShutdownFlags wFlags)
 872 {
 873 #ifdef __WIN32__
 874     bool bOK = TRUE;
 875
 876     if ( wxGetOsVersion(NULL, NULL) == wxWINDOWS_NT ) // if is NT or 2K
 877     {
 878         // Get a token for this process.
 879         HANDLE hToken;
 880         bOK = ::OpenProcessToken(GetCurrentProcess(),
 881                                  TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY,
 882                                  &hToken) != 0;
 883         if ( bOK )
 884         {
 885             TOKEN_PRIVILEGES tkp;
 886
 887             // Get the LUID for the shutdown privilege.
 888             ::LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,
 889                                    &tkp.Privileges[0].Luid);
 890
 891             tkp.PrivilegeCount = 1;  // one privilege to set
 892             tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
 893
 894             // Get the shutdown privilege for this process.
 895             ::AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,
 896                                     (PTOKEN_PRIVILEGES)NULL, 0);
 897
 898             // Cannot test the return value of AdjustTokenPrivileges.
 899             bOK = ::GetLastError() == ERROR_SUCCESS;
 900         }
 901     }
 902
 903     if ( bOK )
 904     {
 905         UINT flags = EWX_SHUTDOWN | EWX_FORCE;
 906         switch ( wFlags )
 907         {
 908             case wxSHUTDOWN_POWEROFF:
 909                 flags |= EWX_POWEROFF;
 910                 break;
 911
 912             case wxSHUTDOWN_REBOOT:
 913                 flags |= EWX_REBOOT;
 914                 break;
 915
 916             default:
 917                 wxFAIL_MSG( _T("unknown wxShutdown() flag") );
 918                 return FALSE;
 919         }
 920
 921         bOK = ::ExitWindowsEx(EWX_SHUTDOWN | EWX_FORCE | EWX_REBOOT, 0) != 0;
 922     }
 923
 924     return bOK;
 925 #else // Win16
 926     return FALSE;
 927 #endif // Win32/16
 928 }
 929
 930 // ----------------------------------------------------------------------------
 931 // misc
 932 // ----------------------------------------------------------------------------
 933
 934 // Get free memory in bytes, or -1 if cannot determine amount (e.g. on UNIX)
 935 long wxGetFreeMemory()
 936 {
 937 #if defined(__WIN32__) && !defined(__BORLANDC__)
 938     MEMORYSTATUS memStatus;
 939     memStatus.dwLength = sizeof(MEMORYSTATUS);
 940     GlobalMemoryStatus(&memStatus);
 941     return memStatus.dwAvailPhys;
 942 #else
 943     return (long)GetFreeSpace(0);
 944 #endif
 945 }
 946
 947 unsigned long wxGetProcessId()
 948 {
 949 #ifdef __WIN32__
 950     return ::GetCurrentProcessId();
 951 #else
 952     return 0;
 953 #endif
 954 }
 955
 956 // Emit a beeeeeep
 957 void wxBell()
 958 {
 959     ::MessageBeep((UINT)-1);        // default sound
 960 }
 961
 962 wxString wxGetOsDescription()
 963 {
 964 #ifdef __WIN32__
 965     wxString str;
 966
 967     OSVERSIONINFO info;
 968     wxZeroMemory(info);
 969
 970     info.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
 971     if ( ::GetVersionEx(&info) )
 972     {
 973         switch ( info.dwPlatformId )
 974         {
 975             case VER_PLATFORM_WIN32s:
 976                 str = _("Win32s on Windows 3.1");
 977                 break;
 978
 979             case VER_PLATFORM_WIN32_WINDOWS:
 980                 str.Printf(_("Windows 9%c"),
 981                            info.dwMinorVersion == 0 ? _T('5') : _T('8'));
 982                 if ( !wxIsEmpty(info.szCSDVersion) )
 983                 {
 984                     str << _T(" (") << info.szCSDVersion << _T(')');
 985                 }
 986                 break;
 987
 988             case VER_PLATFORM_WIN32_NT:
 989                 str.Printf(_T("Windows NT %lu.%lu (build %lu"),
 990                            info.dwMajorVersion,
 991                            info.dwMinorVersion,
 992                            info.dwBuildNumber);
 993                 if ( !wxIsEmpty(info.szCSDVersion) )
 994                 {
 995                     str << _T(", ") << info.szCSDVersion;
 996                 }
 997                 str << _T(')');
 998                 break;
 999         }
1000     }
1001     else
1002     {
1003         wxFAIL_MSG( _T("GetVersionEx() failed") ); // should never happen
1004     }
1005
1006     return str;
1007 #else // Win16
1008     return _("Windows 3.1");
1009 #endif // Win32/16
1010 }
1011
1012 int wxGetOsVersion(int *majorVsn, int *minorVsn)
1013 {
1014 #if defined(__WIN32__)
1015     static int ver = -1, major = -1, minor = -1;
1016
1017     if ( ver == -1 )
1018     {
1019         OSVERSIONINFO info;
1020         wxZeroMemory(info);
1021
1022         ver = wxWINDOWS;
1023         info.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
1024         if ( ::GetVersionEx(&info) )
1025         {
1026             major = info.dwMajorVersion;
1027             minor = info.dwMinorVersion;
1028
1029             switch ( info.dwPlatformId )
1030             {
1031                 case VER_PLATFORM_WIN32s:
1032                     ver = wxWIN32S;
1033                     break;
1034
1035                 case VER_PLATFORM_WIN32_WINDOWS:
1036                     ver = wxWIN95;
1037                     break;
1038
1039                 case VER_PLATFORM_WIN32_NT:
1040                     ver = wxWINDOWS_NT;
1041                     break;
1042             }
1043         }
1044     }
1045
1046     if (majorVsn && major != -1)
1047         *majorVsn = major;
1048     if (minorVsn && minor != -1)
1049         *minorVsn = minor;
1050
1051     return ver;
1052 #else // Win16
1053     int retValue = wxWINDOWS;
1054     #ifdef __WINDOWS_386__
1055         retValue = wxWIN386;
1056     #else
1057         #if !defined(__WATCOMC__) && !defined(GNUWIN32) && wxUSE_PENWINDOWS
1058             extern HANDLE g_hPenWin;
1059             retValue = g_hPenWin ? wxPENWINDOWS : wxWINDOWS;
1060         #endif
1061     #endif
1062
1063     if (majorVsn)
1064         *majorVsn = 3;
1065     if (minorVsn)
1066         *minorVsn = 1;
1067
1068     return retValue;
1069 #endif
1070 }
1071
1072 // ----------------------------------------------------------------------------
1073 // sleep functions
1074 // ----------------------------------------------------------------------------
1075
1076 #if wxUSE_GUI
1077
1078 #if wxUSE_TIMER
1079
1080 // Sleep for nSecs seconds. Attempt a Windows implementation using timers.
1081 static bool gs_inTimer = FALSE;
1082
1083 class wxSleepTimer : public wxTimer
1084 {
1085 public:
1086     virtual void Notify()
1087     {
1088         gs_inTimer = FALSE;
1089         Stop();
1090     }
1091 };
1092
1093 static wxTimer *wxTheSleepTimer = NULL;
1094
1095 void wxUsleep(unsigned long milliseconds)
1096 {
1097 #ifdef __WIN32__
1098     ::Sleep(milliseconds);
1099 #else // !Win32
1100     if (gs_inTimer)
1101         return;
1102     if (miliseconds <= 0)
1103         return;
1104
1105     wxTheSleepTimer = new wxSleepTimer;
1106     gs_inTimer = TRUE;
1107     wxTheSleepTimer->Start(milliseconds);
1108     while (gs_inTimer)
1109     {
1110         if (wxTheApp->Pending())
1111             wxTheApp->Dispatch();
1112     }
1113     delete wxTheSleepTimer;
1114     wxTheSleepTimer = NULL;
1115 #endif // Win32/!Win32
1116 }
1117
1118 void wxSleep(int nSecs)
1119 {
1120     if (gs_inTimer)
1121         return;
1122     if (nSecs <= 0)
1123          return;
1124
1125     wxTheSleepTimer = new wxSleepTimer;
1126     gs_inTimer = TRUE;
1127     wxTheSleepTimer->Start(nSecs*1000);
1128     while (gs_inTimer)
1129     {
1130         if (wxTheApp->Pending())
1131             wxTheApp->Dispatch();
1132     }
1133     delete wxTheSleepTimer;
1134     wxTheSleepTimer = NULL;
1135 }
1136
1137 // Consume all events until no more left
1138 void wxFlushEvents()
1139 {
1140 //  wxYield();
1141 }
1142
1143 #endif // wxUSE_TIMER
1144
1145 #elif defined(__WIN32__) // wxUSE_GUI
1146
1147 void wxUsleep(unsigned long milliseconds)
1148 {
1149     ::Sleep(milliseconds);
1150 }
1151
1152 void wxSleep(int nSecs)
1153 {
1154     wxUsleep(1000*nSecs);
1155 }
1156
1157 #endif // wxUSE_GUI/!wxUSE_GUI
1158 #endif // __WXMICROWIN__
1159
1160 // ----------------------------------------------------------------------------
1161 // deprecated (in favour of wxLog) log functions
1162 // ----------------------------------------------------------------------------
1163
1164 #if WXWIN_COMPATIBILITY_2_2
1165
1166 // Output a debug mess., in a system dependent fashion.
1167 #ifndef __WXMICROWIN__
1168 void wxDebugMsg(const wxChar *fmt ...)
1169 {
1170   va_list ap;
1171   static wxChar buffer[512];
1172
1173   if (!wxTheApp->GetWantDebugOutput())
1174     return;
1175
1176   va_start(ap, fmt);
1177
1178   wvsprintf(buffer,fmt,ap);
1179   OutputDebugString((LPCTSTR)buffer);
1180
1181   va_end(ap);
1182 }
1183
1184 // Non-fatal error: pop up message box and (possibly) continue
1185 void wxError(const wxString& msg, const wxString& title)
1186 {
1187   wxSprintf(wxBuffer, wxT("%s\nContinue?"), WXSTRINGCAST msg);
1188   if (MessageBox(NULL, (LPCTSTR)wxBuffer, (LPCTSTR)WXSTRINGCAST title,
1189              MB_ICONSTOP | MB_YESNO) == IDNO)
1190     wxExit();
1191 }
1192
1193 // Fatal error: pop up message box and abort
1194 void wxFatalError(const wxString& msg, const wxString& title)
1195 {
1196   wxSprintf(wxBuffer, wxT("%s: %s"), WXSTRINGCAST title, WXSTRINGCAST msg);
1197   FatalAppExit(0, (LPCTSTR)wxBuffer);
1198 }
1199 #endif // __WXMICROWIN__
1200
1201 #endif // WXWIN_COMPATIBILITY_2_2
1202
1203 #if wxUSE_GUI
1204
1205 // ----------------------------------------------------------------------------
1206 // functions to work with .INI files
1207 // ----------------------------------------------------------------------------
1208
1209 // Reading and writing resources (eg WIN.INI, .Xdefaults)
1210 #if wxUSE_RESOURCES
1211 bool wxWriteResource(const wxString& section, const wxString& entry, const wxString& value, const wxString& file)
1212 {
1213   if (file != wxT(""))
1214 // Don't know what the correct cast should be, but it doesn't
1215 // compile in BC++/16-bit without this cast.
1216 #if !defined(__WIN32__)
1217     return (WritePrivateProfileString((const char*) section, (const char*) entry, (const char*) value, (const char*) file) != 0);
1218 #else
1219     return (WritePrivateProfileString((LPCTSTR)WXSTRINGCAST section, (LPCTSTR)WXSTRINGCAST entry, (LPCTSTR)value, (LPCTSTR)WXSTRINGCAST file) != 0);
1220 #endif
1221   else
1222     return (WriteProfileString((LPCTSTR)WXSTRINGCAST section, (LPCTSTR)WXSTRINGCAST entry, (LPCTSTR)WXSTRINGCAST value) != 0);
1223 }
1224
1225 bool wxWriteResource(const wxString& section, const wxString& entry, float value, const wxString& file)
1226 {
1227     wxString buf;
1228     buf.Printf(wxT("%.4f"), value);
1229
1230     return wxWriteResource(section, entry, buf, file);
1231 }
1232
1233 bool wxWriteResource(const wxString& section, const wxString& entry, long value, const wxString& file)
1234 {
1235     wxString buf;
1236     buf.Printf(wxT("%ld"), value);
1237
1238     return wxWriteResource(section, entry, buf, file);
1239 }
1240
1241 bool wxWriteResource(const wxString& section, const wxString& entry, int value, const wxString& file)
1242 {
1243     wxString buf;
1244     buf.Printf(wxT("%d"), value);
1245
1246     return wxWriteResource(section, entry, buf, file);
1247 }
1248
1249 bool wxGetResource(const wxString& section, const wxString& entry, wxChar **value, const wxString& file)
1250 {
1251     static const wxChar defunkt[] = wxT("$$default");
1252     if (file != wxT(""))
1253     {
1254         int n = GetPrivateProfileString((LPCTSTR)WXSTRINGCAST section, (LPCTSTR)WXSTRINGCAST entry, (LPCTSTR)defunkt,
1255                 (LPTSTR)wxBuffer, 1000, (LPCTSTR)WXSTRINGCAST file);
1256         if (n == 0 || wxStrcmp(wxBuffer, defunkt) == 0)
1257             return FALSE;
1258     }
1259     else
1260     {
1261         int n = GetProfileString((LPCTSTR)WXSTRINGCAST section, (LPCTSTR)WXSTRINGCAST entry, (LPCTSTR)defunkt,
1262                 (LPTSTR)wxBuffer, 1000);
1263         if (n == 0 || wxStrcmp(wxBuffer, defunkt) == 0)
1264             return FALSE;
1265     }
1266     if (*value) delete[] (*value);
1267     *value = copystring(wxBuffer);
1268     return TRUE;
1269 }
1270
1271 bool wxGetResource(const wxString& section, const wxString& entry, float *value, const wxString& file)
1272 {
1273     wxChar *s = NULL;
1274     bool succ = wxGetResource(section, entry, (wxChar **)&s, file);
1275     if (succ)
1276     {
1277         *value = (float)wxStrtod(s, NULL);
1278         delete[] s;
1279         return TRUE;
1280     }
1281     else return FALSE;
1282 }
1283
1284 bool wxGetResource(const wxString& section, const wxString& entry, long *value, const wxString& file)
1285 {
1286     wxChar *s = NULL;
1287     bool succ = wxGetResource(section, entry, (wxChar **)&s, file);
1288     if (succ)
1289     {
1290         *value = wxStrtol(s, NULL, 10);
1291         delete[] s;
1292         return TRUE;
1293     }
1294     else return FALSE;
1295 }
1296
1297 bool wxGetResource(const wxString& section, const wxString& entry, int *value, const wxString& file)
1298 {
1299     wxChar *s = NULL;
1300     bool succ = wxGetResource(section, entry, (wxChar **)&s, file);
1301     if (succ)
1302     {
1303         *value = (int)wxStrtol(s, NULL, 10);
1304         delete[] s;
1305         return TRUE;
1306     }
1307     else return FALSE;
1308 }
1309 #endif // wxUSE_RESOURCES
1310
1311 // ---------------------------------------------------------------------------
1312 // helper functions for showing a "busy" cursor
1313 // ---------------------------------------------------------------------------
1314
1315 static HCURSOR gs_wxBusyCursor = 0;     // new, busy cursor
1316 static HCURSOR gs_wxBusyCursorOld = 0;  // old cursor
1317 static int gs_wxBusyCursorCount = 0;
1318
1319 #ifdef __DIGITALMARS__
1320 extern "C" HCURSOR wxGetCurrentBusyCursor()
1321 #else
1322 extern HCURSOR wxGetCurrentBusyCursor()
1323 #endif
1324 {
1325     return gs_wxBusyCursor;
1326 }
1327
1328 // Set the cursor to the busy cursor for all windows
1329 void wxBeginBusyCursor(wxCursor *cursor)
1330 {
1331     if ( gs_wxBusyCursorCount++ == 0 )
1332     {
1333         gs_wxBusyCursor = (HCURSOR)cursor->GetHCURSOR();
1334 #ifndef __WXMICROWIN__
1335         gs_wxBusyCursorOld = ::SetCursor(gs_wxBusyCursor);
1336 #endif
1337     }
1338     //else: nothing to do, already set
1339 }
1340
1341 // Restore cursor to normal
1342 void wxEndBusyCursor()
1343 {
1344     wxCHECK_RET( gs_wxBusyCursorCount > 0,
1345                  wxT("no matching wxBeginBusyCursor() for wxEndBusyCursor()") );
1346
1347     if ( --gs_wxBusyCursorCount == 0 )
1348     {
1349 #ifndef __WXMICROWIN__
1350         ::SetCursor(gs_wxBusyCursorOld);
1351 #endif
1352         gs_wxBusyCursorOld = 0;
1353     }
1354 }
1355
1356 // TRUE if we're between the above two calls
1357 bool wxIsBusy()
1358 {
1359   return gs_wxBusyCursorCount > 0;
1360 }
1361
1362 // Check whether this window wants to process messages, e.g. Stop button
1363 // in long calculations.
1364 bool wxCheckForInterrupt(wxWindow *wnd)
1365 {
1366     wxCHECK( wnd, FALSE );
1367
1368     MSG msg;
1369     while ( ::PeekMessage(&msg, GetHwndOf(wnd), 0, 0, PM_REMOVE) )
1370     {
1371         ::TranslateMessage(&msg);
1372         ::DispatchMessage(&msg);
1373     }
1374
1375     return TRUE;
1376 }
1377
1378 // MSW only: get user-defined resource from the .res file.
1379 // Returns NULL or newly-allocated memory, so use delete[] to clean up.
1380
1381 #ifndef __WXMICROWIN__
1382 wxChar *wxLoadUserResource(const wxString& resourceName, const wxString& resourceType)
1383 {
1384     HRSRC hResource = ::FindResource(wxGetInstance(), resourceName, resourceType);
1385     if ( hResource == 0 )
1386         return NULL;
1387
1388     HGLOBAL hData = ::LoadResource(wxGetInstance(), hResource);
1389     if ( hData == 0 )
1390         return NULL;
1391
1392     wxChar *theText = (wxChar *)::LockResource(hData);
1393     if ( !theText )
1394         return NULL;
1395
1396     // Not all compilers put a zero at the end of the resource (e.g. BC++ doesn't).
1397     // so we need to find the length of the resource.
1398     int len = ::SizeofResource(wxGetInstance(), hResource);
1399     wxChar  *s = new wxChar[len+1];
1400     wxStrncpy(s,theText,len);
1401     s[len]=0;
1402
1403     // wxChar *s = copystring(theText);
1404
1405     // Obsolete in WIN32
1406 #ifndef __WIN32__
1407     UnlockResource(hData);
1408 #endif
1409
1410     // No need??
1411     //  GlobalFree(hData);
1412
1413     return s;
1414 }
1415 #endif // __WXMICROWIN__
1416
1417 // ----------------------------------------------------------------------------
1418 // get display info
1419 // ----------------------------------------------------------------------------
1420
1421 // See also the wxGetMousePosition in window.cpp
1422 // Deprecated: use wxPoint wxGetMousePosition() instead
1423 void wxGetMousePosition( int* x, int* y )
1424 {
1425     POINT pt;
1426     GetCursorPos( & pt );
1427     if ( x ) *x = pt.x;
1428     if ( y ) *y = pt.y;
1429 };
1430
1431 // Return TRUE if we have a colour display
1432 bool wxColourDisplay()
1433 {
1434 #ifdef __WXMICROWIN__
1435     // MICROWIN_TODO
1436     return TRUE;
1437 #else
1438     // this function is called from wxDC ctor so it is called a *lot* of times
1439     // hence we optimize it a bit but doign the check only once
1440     //
1441     // this should be MT safe as only the GUI thread (holding the GUI mutex)
1442     // can call us
1443     static int s_isColour = -1;
1444
1445     if ( s_isColour == -1 )
1446     {
1447         ScreenHDC dc;
1448         int noCols = ::GetDeviceCaps(dc, NUMCOLORS);
1449
1450         s_isColour = (noCols == -1) || (noCols > 2);
1451     }
1452
1453     return s_isColour != 0;
1454 #endif
1455 }
1456
1457 // Returns depth of screen
1458 int wxDisplayDepth()
1459 {
1460     ScreenHDC dc;
1461     return GetDeviceCaps(dc, PLANES) * GetDeviceCaps(dc, BITSPIXEL);
1462 }
1463
1464 // Get size of display
1465 void wxDisplaySize(int *width, int *height)
1466 {
1467 #ifdef __WXMICROWIN__
1468     RECT rect;
1469     HWND hWnd = GetDesktopWindow();
1470     ::GetWindowRect(hWnd, & rect);
1471
1472     if ( width )
1473         *width = rect.right - rect.left;
1474     if ( height )
1475         *height = rect.bottom - rect.top;
1476 #else // !__WXMICROWIN__
1477     ScreenHDC dc;
1478
1479     if ( width )
1480         *width = ::GetDeviceCaps(dc, HORZRES);
1481     if ( height )
1482         *height = ::GetDeviceCaps(dc, VERTRES);
1483 #endif // __WXMICROWIN__/!__WXMICROWIN__
1484 }
1485
1486 void wxDisplaySizeMM(int *width, int *height)
1487 {
1488 #ifdef __WXMICROWIN__
1489     // MICROWIN_TODO
1490     if ( width )
1491         *width = 0;
1492     if ( height )
1493         *height = 0;
1494 #else
1495     ScreenHDC dc;
1496
1497     if ( width )
1498         *width = ::GetDeviceCaps(dc, HORZSIZE);
1499     if ( height )
1500         *height = ::GetDeviceCaps(dc, VERTSIZE);
1501 #endif
1502 }
1503
1504 void wxClientDisplayRect(int *x, int *y, int *width, int *height)
1505 {
1506 #if defined(__WIN16__) || defined(__WXMICROWIN__)
1507     *x = 0; *y = 0;
1508     wxDisplaySize(width, height);
1509 #else
1510     // Determine the desktop dimensions minus the taskbar and any other
1511     // special decorations...
1512     RECT r;
1513
1514     SystemParametersInfo(SPI_GETWORKAREA, 0, &r, 0);
1515     if (x)      *x = r.left;
1516     if (y)      *y = r.top;
1517     if (width)  *width = r.right - r.left;
1518     if (height) *height = r.bottom - r.top;
1519 #endif
1520 }
1521
1522 // ---------------------------------------------------------------------------
1523 // window information functions
1524 // ---------------------------------------------------------------------------
1525
1526 wxString WXDLLEXPORT wxGetWindowText(WXHWND hWnd)
1527 {
1528     wxString str;
1529
1530     if ( hWnd )
1531     {
1532         int len = GetWindowTextLength((HWND)hWnd) + 1;
1533         ::GetWindowText((HWND)hWnd, str.GetWriteBuf(len), len);
1534         str.UngetWriteBuf();
1535     }
1536
1537     return str;
1538 }
1539
1540 wxString WXDLLEXPORT wxGetWindowClass(WXHWND hWnd)
1541 {
1542     wxString str;
1543
1544     // MICROWIN_TODO
1545 #ifndef __WXMICROWIN__
1546     if ( hWnd )
1547     {
1548         int len = 256; // some starting value
1549
1550         for ( ;; )
1551         {
1552             int count = ::GetClassName((HWND)hWnd, str.GetWriteBuf(len), len);
1553
1554             str.UngetWriteBuf();
1555             if ( count == len )
1556             {
1557                 // the class name might have been truncated, retry with larger
1558                 // buffer
1559                 len *= 2;
1560             }
1561             else
1562             {
1563                 break;
1564             }
1565         }
1566     }
1567 #endif // !__WXMICROWIN__
1568
1569     return str;
1570 }
1571
1572 WXWORD WXDLLEXPORT wxGetWindowId(WXHWND hWnd)
1573 {
1574 #ifndef __WIN32__
1575     return (WXWORD)GetWindowWord((HWND)hWnd, GWW_ID);
1576 #else // Win32
1577     return (WXWORD)GetWindowLong((HWND)hWnd, GWL_ID);
1578 #endif // Win16/32
1579 }
1580
1581 // ----------------------------------------------------------------------------
1582 // Metafile helpers
1583 // ----------------------------------------------------------------------------
1584
1585 extern void PixelToHIMETRIC(LONG *x, LONG *y)
1586 {
1587     ScreenHDC hdcRef;
1588
1589     int iWidthMM = GetDeviceCaps(hdcRef, HORZSIZE),
1590         iHeightMM = GetDeviceCaps(hdcRef, VERTSIZE),
1591         iWidthPels = GetDeviceCaps(hdcRef, HORZRES),
1592         iHeightPels = GetDeviceCaps(hdcRef, VERTRES);
1593
1594     *x *= (iWidthMM * 100);
1595     *x /= iWidthPels;
1596     *y *= (iHeightMM * 100);
1597     *y /= iHeightPels;
1598 }
1599
1600 extern void HIMETRICToPixel(LONG *x, LONG *y)
1601 {
1602     ScreenHDC hdcRef;
1603
1604     int iWidthMM = GetDeviceCaps(hdcRef, HORZSIZE),
1605         iHeightMM = GetDeviceCaps(hdcRef, VERTSIZE),
1606         iWidthPels = GetDeviceCaps(hdcRef, HORZRES),
1607         iHeightPels = GetDeviceCaps(hdcRef, VERTRES);
1608
1609     *x *= iWidthPels;
1610     *x /= (iWidthMM * 100);
1611     *y *= iHeightPels;
1612     *y /= (iHeightMM * 100);
1613 }
1614
1615 #endif // wxUSE_GUI
1616
1617 #ifdef __WXMICROWIN__
1618 int wxGetOsVersion(int *majorVsn, int *minorVsn)
1619 {
1620     // MICROWIN_TODO
1621     if (majorVsn) *majorVsn = 0;
1622     if (minorVsn) *minorVsn = 0;
1623     return wxUNIX;
1624 }
1625 #endif // __WXMICROWIN__
1626
1627 // ----------------------------------------------------------------------------
1628 // Win32 codepage conversion functions
1629 // ----------------------------------------------------------------------------
1630
1631 #if defined(__WIN32__) && !defined(__WXMICROWIN__)
1632
1633 // wxGetNativeFontEncoding() doesn't exist neither in wxBase nor in wxUniv
1634 #if wxUSE_GUI && !defined(__WXUNIVERSAL__)
1635
1636 #include "wx/fontmap.h"
1637
1638 // VZ: the new version of wxCharsetToCodepage() is more politically correct
1639 //     and should work on other Windows versions as well but the old version is
1640 //     still needed for !wxUSE_FONTMAP || !wxUSE_GUI case
1641
1642 extern long wxEncodingToCodepage(wxFontEncoding encoding)
1643 {
1644     // translate encoding into the Windows CHARSET
1645     wxNativeEncodingInfo natveEncInfo;
1646     if ( !wxGetNativeFontEncoding(encoding, &natveEncInfo) )
1647         return -1;
1648
1649     // translate CHARSET to code page
1650     CHARSETINFO csetInfo;
1651     if ( !::TranslateCharsetInfo((DWORD *)(DWORD)natveEncInfo.charset,
1652                                  &csetInfo,
1653                                  TCI_SRCCHARSET) )
1654     {
1655         wxLogLastError(_T("TranslateCharsetInfo(TCI_SRCCHARSET)"));
1656
1657         return -1;
1658     }
1659
1660     return csetInfo.ciACP;
1661 }
1662
1663 #if wxUSE_FONTMAP
1664
1665 extern long wxCharsetToCodepage(const wxChar *name)
1666 {
1667     // first get the font encoding for this charset
1668     if ( !name )
1669         return -1;
1670
1671     wxFontEncoding enc = wxFontMapper::Get()->CharsetToEncoding(name, FALSE);
1672     if ( enc == wxFONTENCODING_SYSTEM )
1673         return -1;
1674
1675     // the use the helper function
1676     return wxEncodingToCodepage(enc);
1677 }
1678
1679 #endif // wxUSE_FONTMAP
1680
1681 #endif // wxUSE_GUI
1682
1683 // include old wxCharsetToCodepage() by OK if needed
1684 #if !wxUSE_GUI || !wxUSE_FONTMAP
1685
1686 #include "wx/msw/registry.h"
1687
1688 // this should work if Internet Exploiter is installed
1689 extern long wxCharsetToCodepage(const wxChar *name)
1690 {
1691     if (!name)
1692         return GetACP();
1693
1694     long CP=-1;
1695
1696     wxString cn(name);
1697     do {
1698         wxString path(wxT("MIME\\Database\\Charset\\"));
1699         path += cn;
1700         wxRegKey key(wxRegKey::HKCR, path);
1701
1702         if (!key.Exists()) break;
1703
1704         // two cases: either there's an AliasForCharset string,
1705         // or there are Codepage and InternetEncoding dwords.
1706         // The InternetEncoding gives us the actual encoding,
1707         // the Codepage just says which Windows character set to
1708         // use when displaying the data.
1709         if (key.HasValue(wxT("InternetEncoding")) &&
1710             key.QueryValue(wxT("InternetEncoding"), &CP)) break;
1711
1712         // no encoding, see if it's an alias
1713         if (!key.HasValue(wxT("AliasForCharset")) ||
1714             !key.QueryValue(wxT("AliasForCharset"), cn)) break;
1715     } while (1);
1716
1717     return CP;
1718 }
1719
1720 #endif // !wxUSE_GUI || !wxUSE_FONTMAP
1721
1722 #endif // Win32
1723