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 #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(__WXWINE__) && !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__) && !defined(__TWIN32__)
  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(__WXWINE__) && !defined(__WXMICROWIN__)
  82     #include <io.h>
  83
  84     #ifndef __GNUWIN32__
  85         #include <shellapi.h>
  86     #endif
  87 #endif
  88
  89 #ifndef __WATCOMC__
  90     #if !(defined(_MSC_VER) && (_MSC_VER > 800))
  91         #include <errno.h>
  92     #endif
  93 #endif
  94
  95 //// BEGIN for console support: VC++ only
  96 #ifdef __VISUALC__
  97
  98 #include "wx/msw/msvcrt.h"
  99
 100 #include <fcntl.h>
 101
 102 #include "wx/ioswrap.h"
 103
 104 /* Need to undef new if including crtdbg.h */
 105 #  ifdef new
 106 #  undef new
 107 #  endif
 108
 109 #ifndef __WIN16__
 110 #  include <crtdbg.h>
 111 #endif
 112
 113 #  if defined(__WXDEBUG__) && wxUSE_GLOBAL_MEMORY_OPERATORS && wxUSE_DEBUG_NEW_ALWAYS
 114 #  define new new(__TFILE__,__LINE__)
 115 #  endif
 116
 117 #endif
 118   // __VISUALC__
 119 /// END for console support
 120
 121 // ----------------------------------------------------------------------------
 122 // constants
 123 // ----------------------------------------------------------------------------
 124
 125 // In the WIN.INI file
 126 static const wxChar WX_SECTION[] = wxT("wxWindows");
 127 static const wxChar eUSERNAME[]  = wxT("UserName");
 128
 129 // these are only used under Win16
 130 #if !defined(__WIN32__) && !defined(__WXMICROWIN__)
 131 static const wxChar eHOSTNAME[]  = wxT("HostName");
 132 static const wxChar eUSERID[]    = wxT("UserId");
 133 #endif // !Win32
 134
 135 #ifndef __WXMICROWIN__
 136
 137 // ============================================================================
 138 // implementation
 139 // ============================================================================
 140
 141 // ----------------------------------------------------------------------------
 142 // get host name and related
 143 // ----------------------------------------------------------------------------
 144
 145 // Get hostname only (without domain name)
 146 bool wxGetHostName(wxChar *buf, int maxSize)
 147 {
 148 #if defined(__WIN32__) && !defined(__TWIN32__) && !defined(__WXMICROWIN__)
 149     DWORD nSize = maxSize;
 150     if ( !::GetComputerName(buf, &nSize) )
 151     {
 152         wxLogLastError(wxT("GetComputerName"));
 153
 154         return FALSE;
 155     }
 156
 157     return TRUE;
 158 #else
 159     wxChar *sysname;
 160     const wxChar *default_host = wxT("noname");
 161
 162     if ((sysname = wxGetenv(wxT("SYSTEM_NAME"))) == NULL) {
 163         GetProfileString(WX_SECTION, eHOSTNAME, default_host, buf, maxSize - 1);
 164     } else
 165         wxStrncpy(buf, sysname, maxSize - 1);
 166     buf[maxSize] = wxT('\0');
 167     return *buf ? TRUE : FALSE;
 168 #endif
 169 }
 170
 171 // get full hostname (with domain name if possible)
 172 bool wxGetFullHostName(wxChar *buf, int maxSize)
 173 {
 174 #if defined(__WIN32__) && !defined(__TWIN32__) && !defined(__WXMICROWIN__) && ! (defined(__GNUWIN32__) && !defined(__MINGW32__))
 175     // TODO should use GetComputerNameEx() when available
 176
 177     // the idea is that if someone had set wxUSE_SOCKETS to 0 the code
 178     // shouldn't use winsock.dll (a.k.a. ws2_32.dll) at all so only use this
 179     // code if we link with it anyhow
 180 #if wxUSE_SOCKETS
 181     WSADATA wsa;
 182     if ( WSAStartup(MAKEWORD(1, 1), &wsa) == 0 )
 183     {
 184         wxString host;
 185         char bufA[256];
 186         if ( gethostname(bufA, WXSIZEOF(bufA)) == 0 )
 187         {
 188             // gethostname() won't usually include the DNS domain name, for
 189             // this we need to work a bit more
 190             if ( !strchr(bufA, '.') )
 191             {
 192                 struct hostent *pHostEnt =  gethostbyname(bufA);
 193
 194                 if ( pHostEnt )
 195                 {
 196                     // Windows will use DNS internally now
 197                     pHostEnt = gethostbyaddr(pHostEnt->h_addr, 4, AF_INET);
 198                 }
 199
 200                 if ( pHostEnt )
 201                 {
 202                     host = wxString::FromAscii(pHostEnt->h_name);
 203                 }
 204             }
 205         }
 206
 207         WSACleanup();
 208
 209         if ( !host.empty() )
 210         {
 211             wxStrncpy(buf, host, maxSize);
 212
 213             return TRUE;
 214         }
 215     }
 216 #endif // wxUSE_SOCKETS
 217
 218 #endif // Win32
 219
 220     return wxGetHostName(buf, maxSize);
 221 }
 222
 223 // Get user ID e.g. jacs
 224 bool wxGetUserId(wxChar *buf, int maxSize)
 225 {
 226 #if defined(__WIN32__) && !defined(__win32s__) && !defined(__TWIN32__) && !defined(__WXMICROWIN__)
 227     DWORD nSize = maxSize;
 228     if ( ::GetUserName(buf, &nSize) == 0 )
 229     {
 230         // actually, it does happen on Win9x if the user didn't log on
 231         DWORD res = ::GetEnvironmentVariable(wxT("username"), buf, maxSize);
 232         if ( res == 0 )
 233         {
 234             // not found
 235             return FALSE;
 236         }
 237     }
 238
 239     return TRUE;
 240 #else   // Win16 or Win32s
 241     wxChar *user;
 242     const wxChar *default_id = wxT("anonymous");
 243
 244     // Can't assume we have NIS (PC-NFS) or some other ID daemon
 245     // So we ...
 246     if (  (user = wxGetenv(wxT("USER"))) == NULL &&
 247             (user = wxGetenv(wxT("LOGNAME"))) == NULL )
 248     {
 249         // Use wxWindows configuration data (comming soon)
 250         GetProfileString(WX_SECTION, eUSERID, default_id, buf, maxSize - 1);
 251     }
 252     else
 253     {
 254         wxStrncpy(buf, user, maxSize - 1);
 255     }
 256
 257     return *buf ? TRUE : FALSE;
 258 #endif
 259 }
 260
 261 // Get user name e.g. Julian Smart
 262 bool wxGetUserName(wxChar *buf, int maxSize)
 263 {
 264 #if wxUSE_PENWINDOWS && !defined(__WATCOMC__) && !defined(__GNUWIN32__)
 265     extern HANDLE g_hPenWin; // PenWindows Running?
 266     if (g_hPenWin)
 267     {
 268         // PenWindows Does have a user concept!
 269         // Get the current owner of the recognizer
 270         GetPrivateProfileString("Current", "User", default_name, wxBuffer, maxSize - 1, "PENWIN.INI");
 271         strncpy(buf, wxBuffer, maxSize - 1);
 272     }
 273     else
 274 #endif
 275     {
 276 #ifdef USE_NET_API
 277         CHAR szUserName[256];
 278         if ( !wxGetUserId(szUserName, WXSIZEOF(szUserName)) )
 279             return FALSE;
 280
 281         // TODO how to get the domain name?
 282         CHAR *szDomain = "";
 283
 284         // the code is based on the MSDN example (also see KB article Q119670)
 285         WCHAR wszUserName[256];          // Unicode user name
 286         WCHAR wszDomain[256];
 287         LPBYTE ComputerName;
 288
 289         USER_INFO_2 *ui2;         // User structure
 290
 291         // Convert ANSI user name and domain to Unicode
 292         MultiByteToWideChar( CP_ACP, 0, szUserName, strlen(szUserName)+1,
 293                 wszUserName, WXSIZEOF(wszUserName) );
 294         MultiByteToWideChar( CP_ACP, 0, szDomain, strlen(szDomain)+1,
 295                 wszDomain, WXSIZEOF(wszDomain) );
 296
 297         // Get the computer name of a DC for the domain.
 298         if ( NetGetDCName( NULL, wszDomain, &ComputerName ) != NERR_Success )
 299         {
 300             wxLogError(wxT("Can not find domain controller"));
 301
 302             goto error;
 303         }
 304
 305         // Look up the user on the DC
 306         NET_API_STATUS status = NetUserGetInfo( (LPWSTR)ComputerName,
 307                 (LPWSTR)&wszUserName,
 308                 2, // level - we want USER_INFO_2
 309                 (LPBYTE *) &ui2 );
 310         switch ( status )
 311         {
 312             case NERR_Success:
 313                 // ok
 314                 break;
 315
 316             case NERR_InvalidComputer:
 317                 wxLogError(wxT("Invalid domain controller name."));
 318
 319                 goto error;
 320
 321             case NERR_UserNotFound:
 322                 wxLogError(wxT("Invalid user name '%s'."), szUserName);
 323
 324                 goto error;
 325
 326             default:
 327                 wxLogSysError(wxT("Can't get information about user"));
 328
 329                 goto error;
 330         }
 331
 332         // Convert the Unicode full name to ANSI
 333         WideCharToMultiByte( CP_ACP, 0, ui2->usri2_full_name, -1,
 334                 buf, maxSize, NULL, NULL );
 335
 336         return TRUE;
 337
 338 error:
 339         wxLogError(wxT("Couldn't look up full user name."));
 340
 341         return FALSE;
 342 #else  // !USE_NET_API
 343         // Could use NIS, MS-Mail or other site specific programs
 344         // Use wxWindows configuration data
 345         bool ok = GetProfileString(WX_SECTION, eUSERNAME, wxT(""), buf, maxSize - 1) != 0;
 346         if ( !ok )
 347         {
 348             ok = wxGetUserId(buf, maxSize);
 349         }
 350
 351         if ( !ok )
 352         {
 353             wxStrncpy(buf, wxT("Unknown User"), maxSize);
 354         }
 355 #endif // Win32/16
 356     }
 357
 358     return TRUE;
 359 }
 360
 361 const wxChar* wxGetHomeDir(wxString *pstr)
 362 {
 363   wxString& strDir = *pstr;
 364
 365   #if defined(__UNIX__) && !defined(__TWIN32__)
 366     const wxChar *szHome = wxGetenv("HOME");
 367     if ( szHome == NULL ) {
 368       // we're homeless...
 369       wxLogWarning(_("can't find user's HOME, using current directory."));
 370       strDir = wxT(".");
 371     }
 372     else
 373        strDir = szHome;
 374
 375     // add a trailing slash if needed
 376     if ( strDir.Last() != wxT('/') )
 377       strDir << wxT('/');
 378
 379     #ifdef __CYGWIN__
 380       // Cygwin returns unix type path but that does not work well
 381       static wxChar windowsPath[MAX_PATH];
 382       cygwin_conv_to_full_win32_path(strDir, windowsPath);
 383       strDir = windowsPath;
 384     #endif
 385   #else   // Windows
 386     #ifdef  __WIN32__
 387       strDir.clear();
 388
 389       // If we have a valid HOME directory, as is used on many machines that
 390       // have unix utilities on them, we should use that.
 391       const wxChar *szHome = wxGetenv(wxT("HOME"));
 392
 393       if ( szHome != NULL )
 394       {
 395         strDir = szHome;
 396       }
 397       else // no HOME, try HOMEDRIVE/PATH
 398       {
 399           szHome = wxGetenv(wxT("HOMEDRIVE"));
 400           if ( szHome != NULL )
 401             strDir << szHome;
 402           szHome = wxGetenv(wxT("HOMEPATH"));
 403
 404           if ( szHome != NULL )
 405           {
 406             strDir << szHome;
 407
 408             // the idea is that under NT these variables have default values
 409             // of "%systemdrive%:" and "\\". As we don't want to create our
 410             // config files in the root directory of the system drive, we will
 411             // create it in our program's dir. However, if the user took care
 412             // to set HOMEPATH to something other than "\\", we suppose that he
 413             // knows what he is doing and use the supplied value.
 414             if ( wxStrcmp(szHome, wxT("\\")) == 0 )
 415               strDir.clear();
 416           }
 417       }
 418
 419       if ( strDir.empty() )
 420       {
 421           // If we have a valid USERPROFILE directory, as is the case in
 422           // Windows NT, 2000 and XP, we should use that as our home directory.
 423           szHome = wxGetenv(wxT("USERPROFILE"));
 424
 425           if ( szHome != NULL )
 426             strDir = szHome;
 427       }
 428
 429       if ( !strDir.empty() )
 430       {
 431           return strDir.c_str();
 432       }
 433       //else: fall back to the prograrm directory
 434     #else   // Win16
 435       // Win16 has no idea about home, so use the executable directory instead
 436     #endif  // WIN16/32
 437
 438     // 260 was taken from windef.h
 439     #ifndef MAX_PATH
 440       #define MAX_PATH  260
 441     #endif
 442
 443     wxString strPath;
 444     ::GetModuleFileName(::GetModuleHandle(NULL),
 445                         strPath.GetWriteBuf(MAX_PATH), MAX_PATH);
 446     strPath.UngetWriteBuf();
 447
 448     // extract the dir name
 449     wxSplitPath(strPath, &strDir, NULL, NULL);
 450
 451   #endif  // UNIX/Win
 452
 453   return strDir.c_str();
 454 }
 455
 456 wxChar *wxGetUserHome(const wxString& WXUNUSED(user))
 457 {
 458     // VZ: the old code here never worked for user != "" anyhow! Moreover, it
 459     //     returned sometimes a malloc()'d pointer, sometimes a pointer to a
 460     //     static buffer and sometimes I don't even know what.
 461     static wxString s_home;
 462
 463     return (wxChar *)wxGetHomeDir(&s_home);
 464 }
 465
 466 bool wxDirExists(const wxString& dir)
 467 {
 468 #ifdef __WXMICROWIN__
 469     return wxPathExist(dir);
 470 #elif defined(__WIN32__)
 471     DWORD attribs = GetFileAttributes(dir);
 472     return ((attribs != (DWORD)-1) && (attribs & FILE_ATTRIBUTE_DIRECTORY));
 473 #else // Win16
 474     #ifdef __BORLANDC__
 475         struct ffblk fileInfo;
 476     #else
 477         struct find_t fileInfo;
 478     #endif
 479     // In Borland findfirst has a different argument
 480     // ordering from _dos_findfirst. But _dos_findfirst
 481     // _should_ be ok in both MS and Borland... why not?
 482     #ifdef __BORLANDC__
 483         return (findfirst(dir, &fileInfo, _A_SUBDIR) == 0 &&
 484                (fileInfo.ff_attrib & _A_SUBDIR) != 0);
 485     #else
 486         return (_dos_findfirst(dir, _A_SUBDIR, &fileInfo) == 0) &&
 487                ((fileInfo.attrib & _A_SUBDIR) != 0);
 488     #endif
 489 #endif // Win32/16
 490 }
 491
 492 bool wxGetDiskSpace(const wxString& path, wxLongLong *pTotal, wxLongLong *pFree)
 493 {
 494     if ( path.empty() )
 495         return FALSE;
 496
 497 // old w32api don't have ULARGE_INTEGER
 498 #if defined(__WIN32__) && \
 499     (!defined(__GNUWIN32__) || wxCHECK_W32API_VERSION( 0, 3 ))
 500     // GetDiskFreeSpaceEx() is not available under original Win95, check for
 501     // it
 502     typedef BOOL (WINAPI *GetDiskFreeSpaceEx_t)(LPCTSTR,
 503                                                 PULARGE_INTEGER,
 504                                                 PULARGE_INTEGER,
 505                                                 PULARGE_INTEGER);
 506
 507     GetDiskFreeSpaceEx_t
 508         pGetDiskFreeSpaceEx = (GetDiskFreeSpaceEx_t)::GetProcAddress
 509                               (
 510                                 ::GetModuleHandle(_T("kernel32.dll")),
 511 #if wxUSE_UNICODE
 512                                 "GetDiskFreeSpaceExW"
 513 #else
 514                                 "GetDiskFreeSpaceExA"
 515 #endif
 516                               );
 517
 518     if ( pGetDiskFreeSpaceEx )
 519     {
 520         ULARGE_INTEGER bytesFree, bytesTotal;
 521
 522         // may pass the path as is, GetDiskFreeSpaceEx() is smart enough
 523         if ( !pGetDiskFreeSpaceEx(path,
 524                                   &bytesFree,
 525                                   &bytesTotal,
 526                                   NULL) )
 527         {
 528             wxLogLastError(_T("GetDiskFreeSpaceEx"));
 529
 530             return FALSE;
 531         }
 532
 533         // ULARGE_INTEGER is a union of a 64 bit value and a struct containing
 534         // two 32 bit fields which may be or may be not named - try to make it
 535         // compile in all cases
 536 #if defined(__BORLANDC__) && !defined(_ANONYMOUS_STRUCT)
 537         #define UL(ul) ul.u
 538 #else // anon union
 539         #define UL(ul) ul
 540 #endif
 541         if ( pTotal )
 542         {
 543             *pTotal = wxLongLong(UL(bytesTotal).HighPart, UL(bytesTotal).LowPart);
 544         }
 545
 546         if ( pFree )
 547         {
 548             *pFree = wxLongLong(UL(bytesFree).HighPart, UL(bytesFree).LowPart);
 549         }
 550     }
 551     else
 552 #endif // Win32
 553     {
 554         // there's a problem with drives larger than 2GB, GetDiskFreeSpaceEx()
 555         // should be used instead - but if it's not available, fall back on
 556         // GetDiskFreeSpace() nevertheless...
 557
 558         DWORD lSectorsPerCluster,
 559               lBytesPerSector,
 560               lNumberOfFreeClusters,
 561               lTotalNumberOfClusters;
 562
 563         // FIXME: this is wrong, we should extract the root drive from path
 564         //        instead, but this is the job for wxFileName...
 565         if ( !::GetDiskFreeSpace(path,
 566                                  &lSectorsPerCluster,
 567                                  &lBytesPerSector,
 568                                  &lNumberOfFreeClusters,
 569                                  &lTotalNumberOfClusters) )
 570         {
 571             wxLogLastError(_T("GetDiskFreeSpace"));
 572
 573             return FALSE;
 574         }
 575
 576         wxLongLong lBytesPerCluster = lSectorsPerCluster;
 577         lBytesPerCluster *= lBytesPerSector;
 578
 579         if ( pTotal )
 580         {
 581             *pTotal = lBytesPerCluster;
 582             *pTotal *= lTotalNumberOfClusters;
 583         }
 584
 585         if ( pFree )
 586         {
 587             *pFree = lBytesPerCluster;
 588             *pFree *= lNumberOfFreeClusters;
 589         }
 590     }
 591
 592     return TRUE;
 593 }
 594
 595 // ----------------------------------------------------------------------------
 596 // env vars
 597 // ----------------------------------------------------------------------------
 598
 599 bool wxGetEnv(const wxString& var, wxString *value)
 600 {
 601 #ifdef __WIN16__
 602     const wxChar* ret = wxGetenv(var);
 603     if ( !ret )
 604         return FALSE;
 605
 606     if ( value )
 607     {
 608         *value = ret;
 609     }
 610
 611     return TRUE;
 612 #else // Win32
 613     // first get the size of the buffer
 614     DWORD dwRet = ::GetEnvironmentVariable(var, NULL, 0);
 615     if ( !dwRet )
 616     {
 617         // this means that there is no such variable
 618         return FALSE;
 619     }
 620
 621     if ( value )
 622     {
 623         (void)::GetEnvironmentVariable(var, value->GetWriteBuf(dwRet), dwRet);
 624         value->UngetWriteBuf();
 625     }
 626
 627     return TRUE;
 628 #endif // Win16/32
 629 }
 630
 631 bool wxSetEnv(const wxString& var, const wxChar *value)
 632 {
 633     // some compilers have putenv() or _putenv() or _wputenv() but it's better
 634     // to always use Win32 function directly instead of dealing with them
 635 #if defined(__WIN32__)
 636     if ( !::SetEnvironmentVariable(var, value) )
 637     {
 638         wxLogLastError(_T("SetEnvironmentVariable"));
 639
 640         return FALSE;
 641     }
 642
 643     return TRUE;
 644 #else // no way to set env vars
 645     return FALSE;
 646 #endif
 647 }
 648
 649 // ----------------------------------------------------------------------------
 650 // process management
 651 // ----------------------------------------------------------------------------
 652
 653 #ifdef __WIN32__
 654
 655 // structure used to pass parameters from wxKill() to wxEnumFindByPidProc()
 656 struct wxFindByPidParams
 657 {
 658     wxFindByPidParams() { hwnd = 0; pid = 0; }
 659
 660     // the HWND used to return the result
 661     HWND hwnd;
 662
 663     // the PID we're looking from
 664     DWORD pid;
 665
 666     DECLARE_NO_COPY_CLASS(wxFindByPidParams)
 667 };
 668
 669 // wxKill helper: EnumWindows() callback which is used to find the first (top
 670 // level) window belonging to the given process
 671 BOOL CALLBACK wxEnumFindByPidProc(HWND hwnd, LPARAM lParam)
 672 {
 673     DWORD pid;
 674     (void)::GetWindowThreadProcessId(hwnd, &pid);
 675
 676     wxFindByPidParams *params = (wxFindByPidParams *)lParam;
 677     if ( pid == params->pid )
 678     {
 679         // remember the window we found
 680         params->hwnd = hwnd;
 681
 682         // return FALSE to stop the enumeration
 683         return FALSE;
 684     }
 685
 686     // continue enumeration
 687     return TRUE;
 688 }
 689
 690 #endif // __WIN32__
 691
 692 int wxKill(long pid, wxSignal sig, wxKillError *krc)
 693 {
 694 #ifdef __WIN32__
 695     // get the process handle to operate on
 696     HANDLE hProcess = ::OpenProcess(SYNCHRONIZE |
 697                                     PROCESS_TERMINATE |
 698                                     PROCESS_QUERY_INFORMATION,
 699                                     FALSE, // not inheritable
 700                                     (DWORD)pid);
 701     if ( hProcess == NULL )
 702     {
 703         if ( krc )
 704         {
 705             if ( ::GetLastError() == ERROR_ACCESS_DENIED )
 706             {
 707                 *krc = wxKILL_ACCESS_DENIED;
 708             }
 709             else
 710             {
 711                 *krc = wxKILL_NO_PROCESS;
 712             }
 713         }
 714
 715         return -1;
 716     }
 717
 718     bool ok = TRUE;
 719     switch ( sig )
 720     {
 721         case wxSIGKILL:
 722             // kill the process forcefully returning -1 as error code
 723             if ( !::TerminateProcess(hProcess, (UINT)-1) )
 724             {
 725                 wxLogSysError(_("Failed to kill process %d"), pid);
 726
 727                 if ( krc )
 728                 {
 729                     // this is not supposed to happen if we could open the
 730                     // process
 731                     *krc = wxKILL_ERROR;
 732                 }
 733
 734                 ok = FALSE;
 735             }
 736             break;
 737
 738         case wxSIGNONE:
 739             // do nothing, we just want to test for process existence
 740             break;
 741
 742         default:
 743             // any other signal means "terminate"
 744             {
 745                 wxFindByPidParams params;
 746                 params.pid = (DWORD)pid;
 747
 748                 // EnumWindows() has nice semantics: it returns 0 if it found
 749                 // something or if an error occured and non zero if it
 750                 // enumerated all the window
 751                 if ( !::EnumWindows(wxEnumFindByPidProc, (LPARAM)&params) )
 752                 {
 753                     // did we find any window?
 754                     if ( params.hwnd )
 755                     {
 756                         // tell the app to close
 757                         //
 758                         // NB: this is the harshest way, the app won't have
 759                         //     opportunity to save any files, for example, but
 760                         //     this is probably what we want here. If not we
 761                         //     can also use SendMesageTimeout(WM_CLOSE)
 762                         if ( !::PostMessage(params.hwnd, WM_QUIT, 0, 0) )
 763                         {
 764                             wxLogLastError(_T("PostMessage(WM_QUIT)"));
 765                         }
 766                     }
 767                     else // it was an error then
 768                     {
 769                         wxLogLastError(_T("EnumWindows"));
 770
 771                         ok = FALSE;
 772                     }
 773                 }
 774                 else // no windows for this PID
 775                 {
 776                     if ( krc )
 777                     {
 778                         *krc = wxKILL_ERROR;
 779                     }
 780
 781                     ok = FALSE;
 782                 }
 783             }
 784     }
 785
 786     // the return code
 787     DWORD rc;
 788
 789     if ( ok )
 790     {
 791         // as we wait for a short time, we can use just WaitForSingleObject()
 792         // and not MsgWaitForMultipleObjects()
 793         switch ( ::WaitForSingleObject(hProcess, 500 /* msec */) )
 794         {
 795             case WAIT_OBJECT_0:
 796                 // process terminated
 797                 if ( !::GetExitCodeProcess(hProcess, &rc) )
 798                 {
 799                     wxLogLastError(_T("GetExitCodeProcess"));
 800                 }
 801                 break;
 802
 803             default:
 804                 wxFAIL_MSG( _T("unexpected WaitForSingleObject() return") );
 805                 // fall through
 806
 807             case WAIT_FAILED:
 808                 wxLogLastError(_T("WaitForSingleObject"));
 809                 // fall through
 810
 811             case WAIT_TIMEOUT:
 812                 if ( krc )
 813                 {
 814                     *krc = wxKILL_ERROR;
 815                 }
 816
 817                 rc = STILL_ACTIVE;
 818                 break;
 819         }
 820     }
 821     else // !ok
 822     {
 823         // just to suppress the warnings about uninitialized variable
 824         rc = 0;
 825     }
 826
 827     ::CloseHandle(hProcess);
 828
 829     // the return code is the same as from Unix kill(): 0 if killed
 830     // successfully or -1 on error
 831     if ( sig == wxSIGNONE )
 832     {
 833         if ( ok && rc == STILL_ACTIVE )
 834         {
 835             // there is such process => success
 836             return 0;
 837         }
 838     }
 839     else // not SIGNONE
 840     {
 841         if ( ok && rc != STILL_ACTIVE )
 842         {
 843             // killed => success
 844             return 0;
 845         }
 846     }
 847 #else // Win16
 848     wxFAIL_MSG( _T("not implemented") );
 849 #endif // Win32/Win16
 850
 851     // error
 852     return -1;
 853 }
 854
 855 // Execute a program in an Interactive Shell
 856 bool wxShell(const wxString& command)
 857 {
 858     wxChar *shell = wxGetenv(wxT("COMSPEC"));
 859     if ( !shell )
 860         shell = (wxChar*) wxT("\\COMMAND.COM");
 861
 862     wxString cmd;
 863     if ( !command )
 864     {
 865         // just the shell
 866         cmd = shell;
 867     }
 868     else
 869     {
 870         // pass the command to execute to the command processor
 871         cmd.Printf(wxT("%s /c %s"), shell, command.c_str());
 872     }
 873
 874     return wxExecute(cmd, wxEXEC_SYNC) == 0;
 875 }
 876
 877 // Shutdown or reboot the PC
 878 bool wxShutdown(wxShutdownFlags wFlags)
 879 {
 880 #ifdef __WIN32__
 881     bool bOK = TRUE;
 882
 883     if ( wxGetOsVersion(NULL, NULL) == wxWINDOWS_NT ) // if is NT or 2K
 884     {
 885         // Get a token for this process.
 886         HANDLE hToken;
 887         bOK = ::OpenProcessToken(GetCurrentProcess(),
 888                                  TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY,
 889                                  &hToken) != 0;
 890 #ifndef __WXWINE__
 891         if ( bOK )
 892         {
 893             TOKEN_PRIVILEGES tkp;
 894
 895             // Get the LUID for the shutdown privilege.
 896             ::LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,
 897                                    &tkp.Privileges[0].Luid);
 898
 899             tkp.PrivilegeCount = 1;  // one privilege to set
 900             tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
 901
 902             // Get the shutdown privilege for this process.
 903             ::AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,
 904                                     (PTOKEN_PRIVILEGES)NULL, 0);
 905
 906             // Cannot test the return value of AdjustTokenPrivileges.
 907             bOK = ::GetLastError() == ERROR_SUCCESS;
 908         }
 909 #endif
 910     }
 911
 912     if ( bOK )
 913     {
 914         UINT flags = EWX_SHUTDOWN | EWX_FORCE;
 915         switch ( wFlags )
 916         {
 917             case wxSHUTDOWN_POWEROFF:
 918                 flags |= EWX_POWEROFF;
 919                 break;
 920
 921             case wxSHUTDOWN_REBOOT:
 922                 flags |= EWX_REBOOT;
 923                 break;
 924
 925             default:
 926                 wxFAIL_MSG( _T("unknown wxShutdown() flag") );
 927                 return FALSE;
 928         }
 929
 930         bOK = ::ExitWindowsEx(EWX_SHUTDOWN | EWX_FORCE | EWX_REBOOT, 0) != 0;
 931     }
 932
 933     return bOK;
 934 #else // Win16
 935     return FALSE;
 936 #endif // Win32/16
 937 }
 938
 939 // ----------------------------------------------------------------------------
 940 // misc
 941 // ----------------------------------------------------------------------------
 942
 943 // Get free memory in bytes, or -1 if cannot determine amount (e.g. on UNIX)
 944 long wxGetFreeMemory()
 945 {
 946 #if defined(__WIN32__) && !defined(__BORLANDC__) && !defined(__TWIN32__)
 947     MEMORYSTATUS memStatus;
 948     memStatus.dwLength = sizeof(MEMORYSTATUS);
 949     GlobalMemoryStatus(&memStatus);
 950     return memStatus.dwAvailPhys;
 951 #else
 952     return (long)GetFreeSpace(0);
 953 #endif
 954 }
 955
 956 unsigned long wxGetProcessId()
 957 {
 958 #ifdef __WIN32__
 959     return ::GetCurrentProcessId();
 960 #else
 961     return 0;
 962 #endif
 963 }
 964
 965 // Emit a beeeeeep
 966 void wxBell()
 967 {
 968     ::MessageBeep((UINT)-1);        // default sound
 969 }
 970
 971 wxString wxGetOsDescription()
 972 {
 973 #ifdef __WIN32__
 974     wxString str;
 975
 976     OSVERSIONINFO info;
 977     wxZeroMemory(info);
 978
 979     info.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
 980     if ( ::GetVersionEx(&info) )
 981     {
 982         switch ( info.dwPlatformId )
 983         {
 984             case VER_PLATFORM_WIN32s:
 985                 str = _("Win32s on Windows 3.1");
 986                 break;
 987
 988             case VER_PLATFORM_WIN32_WINDOWS:
 989                 str.Printf(_("Windows 9%c"),
 990                            info.dwMinorVersion == 0 ? _T('5') : _T('8'));
 991                 if ( !wxIsEmpty(info.szCSDVersion) )
 992                 {
 993                     str << _T(" (") << info.szCSDVersion << _T(')');
 994                 }
 995                 break;
 996
 997             case VER_PLATFORM_WIN32_NT:
 998                 str.Printf(_T("Windows NT %lu.%lu (build %lu"),
 999                            info.dwMajorVersion,
1000                            info.dwMinorVersion,
1001                            info.dwBuildNumber);
1002                 if ( !wxIsEmpty(info.szCSDVersion) )
1003                 {
1004                     str << _T(", ") << info.szCSDVersion;
1005                 }
1006                 str << _T(')');
1007                 break;
1008         }
1009     }
1010     else
1011     {
1012         wxFAIL_MSG( _T("GetVersionEx() failed") ); // should never happen
1013     }
1014
1015     return str;
1016 #else // Win16
1017     return _("Windows 3.1");
1018 #endif // Win32/16
1019 }
1020
1021 int wxGetOsVersion(int *majorVsn, int *minorVsn)
1022 {
1023 #if defined(__WIN32__) && !defined(__SC__)
1024     static int ver = -1, major = -1, minor = -1;
1025
1026     if ( ver == -1 )
1027     {
1028         OSVERSIONINFO info;
1029         wxZeroMemory(info);
1030
1031         ver = wxWINDOWS;
1032         info.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
1033         if ( ::GetVersionEx(&info) )
1034         {
1035             major = info.dwMajorVersion;
1036             minor = info.dwMinorVersion;
1037
1038             switch ( info.dwPlatformId )
1039             {
1040                 case VER_PLATFORM_WIN32s:
1041                     ver = wxWIN32S;
1042                     break;
1043
1044                 case VER_PLATFORM_WIN32_WINDOWS:
1045                     ver = wxWIN95;
1046                     break;
1047
1048                 case VER_PLATFORM_WIN32_NT:
1049                     ver = wxWINDOWS_NT;
1050                     break;
1051             }
1052         }
1053     }
1054
1055     if (majorVsn && major != -1)
1056         *majorVsn = major;
1057     if (minorVsn && minor != -1)
1058         *minorVsn = minor;
1059
1060     return ver;
1061 #else // Win16
1062     int retValue = wxWINDOWS;
1063     #ifdef __WINDOWS_386__
1064         retValue = wxWIN386;
1065     #else
1066         #if !defined(__WATCOMC__) && !defined(GNUWIN32) && wxUSE_PENWINDOWS
1067             extern HANDLE g_hPenWin;
1068             retValue = g_hPenWin ? wxPENWINDOWS : wxWINDOWS;
1069         #endif
1070     #endif
1071
1072     if (majorVsn)
1073         *majorVsn = 3;
1074     if (minorVsn)
1075         *minorVsn = 1;
1076
1077     return retValue;
1078 #endif
1079 }
1080
1081 // ----------------------------------------------------------------------------
1082 // sleep functions
1083 // ----------------------------------------------------------------------------
1084
1085 #if wxUSE_GUI
1086
1087 #if wxUSE_TIMER
1088
1089 // Sleep for nSecs seconds. Attempt a Windows implementation using timers.
1090 static bool gs_inTimer = FALSE;
1091
1092 class wxSleepTimer : public wxTimer
1093 {
1094 public:
1095     virtual void Notify()
1096     {
1097         gs_inTimer = FALSE;
1098         Stop();
1099     }
1100 };
1101
1102 static wxTimer *wxTheSleepTimer = NULL;
1103
1104 void wxUsleep(unsigned long milliseconds)
1105 {
1106 #ifdef __WIN32__
1107     ::Sleep(milliseconds);
1108 #else // !Win32
1109     if (gs_inTimer)
1110         return;
1111
1112     wxTheSleepTimer = new wxSleepTimer;
1113     gs_inTimer = TRUE;
1114     wxTheSleepTimer->Start(milliseconds);
1115     while (gs_inTimer)
1116     {
1117         if (wxTheApp->Pending())
1118             wxTheApp->Dispatch();
1119     }
1120     delete wxTheSleepTimer;
1121     wxTheSleepTimer = NULL;
1122 #endif // Win32/!Win32
1123 }
1124
1125 void wxSleep(int nSecs)
1126 {
1127     if (gs_inTimer)
1128         return;
1129
1130     wxTheSleepTimer = new wxSleepTimer;
1131     gs_inTimer = TRUE;
1132     wxTheSleepTimer->Start(nSecs*1000);
1133     while (gs_inTimer)
1134     {
1135         if (wxTheApp->Pending())
1136             wxTheApp->Dispatch();
1137     }
1138     delete wxTheSleepTimer;
1139     wxTheSleepTimer = NULL;
1140 }
1141
1142 // Consume all events until no more left
1143 void wxFlushEvents()
1144 {
1145 //  wxYield();
1146 }
1147
1148 #endif // wxUSE_TIMER
1149
1150 #elif defined(__WIN32__) // wxUSE_GUI
1151
1152 void wxUsleep(unsigned long milliseconds)
1153 {
1154     ::Sleep(milliseconds);
1155 }
1156
1157 void wxSleep(int nSecs)
1158 {
1159     wxUsleep(1000*nSecs);
1160 }
1161
1162 #endif // wxUSE_GUI/!wxUSE_GUI
1163 #endif // __WXMICROWIN__
1164
1165 // ----------------------------------------------------------------------------
1166 // deprecated (in favour of wxLog) log functions
1167 // ----------------------------------------------------------------------------
1168
1169 #if WXWIN_COMPATIBILITY_2_2
1170
1171 // Output a debug mess., in a system dependent fashion.
1172 #ifndef __WXMICROWIN__
1173 void wxDebugMsg(const wxChar *fmt ...)
1174 {
1175   va_list ap;
1176   static wxChar buffer[512];
1177
1178   if (!wxTheApp->GetWantDebugOutput())
1179     return;
1180
1181   va_start(ap, fmt);
1182
1183   wvsprintf(buffer,fmt,ap);
1184   OutputDebugString((LPCTSTR)buffer);
1185
1186   va_end(ap);
1187 }
1188
1189 // Non-fatal error: pop up message box and (possibly) continue
1190 void wxError(const wxString& msg, const wxString& title)
1191 {
1192   wxSprintf(wxBuffer, wxT("%s\nContinue?"), WXSTRINGCAST msg);
1193   if (MessageBox(NULL, (LPCTSTR)wxBuffer, (LPCTSTR)WXSTRINGCAST title,
1194              MB_ICONSTOP | MB_YESNO) == IDNO)
1195     wxExit();
1196 }
1197
1198 // Fatal error: pop up message box and abort
1199 void wxFatalError(const wxString& msg, const wxString& title)
1200 {
1201   wxSprintf(wxBuffer, wxT("%s: %s"), WXSTRINGCAST title, WXSTRINGCAST msg);
1202   FatalAppExit(0, (LPCTSTR)wxBuffer);
1203 }
1204 #endif // __WXMICROWIN__
1205
1206 #endif // WXWIN_COMPATIBILITY_2_2
1207
1208 #if wxUSE_GUI
1209
1210 // ----------------------------------------------------------------------------
1211 // functions to work with .INI files
1212 // ----------------------------------------------------------------------------
1213
1214 // Reading and writing resources (eg WIN.INI, .Xdefaults)
1215 #if wxUSE_RESOURCES
1216 bool wxWriteResource(const wxString& section, const wxString& entry, const wxString& value, const wxString& file)
1217 {
1218   if (file != wxT(""))
1219 // Don't know what the correct cast should be, but it doesn't
1220 // compile in BC++/16-bit without this cast.
1221 #if !defined(__WIN32__)
1222     return (WritePrivateProfileString((const char*) section, (const char*) entry, (const char*) value, (const char*) file) != 0);
1223 #else
1224     return (WritePrivateProfileString((LPCTSTR)WXSTRINGCAST section, (LPCTSTR)WXSTRINGCAST entry, (LPCTSTR)value, (LPCTSTR)WXSTRINGCAST file) != 0);
1225 #endif
1226   else
1227     return (WriteProfileString((LPCTSTR)WXSTRINGCAST section, (LPCTSTR)WXSTRINGCAST entry, (LPCTSTR)WXSTRINGCAST value) != 0);
1228 }
1229
1230 bool wxWriteResource(const wxString& section, const wxString& entry, float value, const wxString& file)
1231 {
1232     wxString buf;
1233     buf.Printf(wxT("%.4f"), value);
1234
1235     return wxWriteResource(section, entry, buf, file);
1236 }
1237
1238 bool wxWriteResource(const wxString& section, const wxString& entry, long value, const wxString& file)
1239 {
1240     wxString buf;
1241     buf.Printf(wxT("%ld"), value);
1242
1243     return wxWriteResource(section, entry, buf, file);
1244 }
1245
1246 bool wxWriteResource(const wxString& section, const wxString& entry, int value, const wxString& file)
1247 {
1248     wxString buf;
1249     buf.Printf(wxT("%d"), value);
1250
1251     return wxWriteResource(section, entry, buf, file);
1252 }
1253
1254 bool wxGetResource(const wxString& section, const wxString& entry, wxChar **value, const wxString& file)
1255 {
1256     static const wxChar defunkt[] = wxT("$$default");
1257     if (file != wxT(""))
1258     {
1259         int n = GetPrivateProfileString((LPCTSTR)WXSTRINGCAST section, (LPCTSTR)WXSTRINGCAST entry, (LPCTSTR)defunkt,
1260                 (LPTSTR)wxBuffer, 1000, (LPCTSTR)WXSTRINGCAST file);
1261         if (n == 0 || wxStrcmp(wxBuffer, defunkt) == 0)
1262             return FALSE;
1263     }
1264     else
1265     {
1266         int n = GetProfileString((LPCTSTR)WXSTRINGCAST section, (LPCTSTR)WXSTRINGCAST entry, (LPCTSTR)defunkt,
1267                 (LPTSTR)wxBuffer, 1000);
1268         if (n == 0 || wxStrcmp(wxBuffer, defunkt) == 0)
1269             return FALSE;
1270     }
1271     if (*value) delete[] (*value);
1272     *value = copystring(wxBuffer);
1273     return TRUE;
1274 }
1275
1276 bool wxGetResource(const wxString& section, const wxString& entry, float *value, const wxString& file)
1277 {
1278     wxChar *s = NULL;
1279     bool succ = wxGetResource(section, entry, (wxChar **)&s, file);
1280     if (succ)
1281     {
1282         *value = (float)wxStrtod(s, NULL);
1283         delete[] s;
1284         return TRUE;
1285     }
1286     else return FALSE;
1287 }
1288
1289 bool wxGetResource(const wxString& section, const wxString& entry, long *value, const wxString& file)
1290 {
1291     wxChar *s = NULL;
1292     bool succ = wxGetResource(section, entry, (wxChar **)&s, file);
1293     if (succ)
1294     {
1295         *value = wxStrtol(s, NULL, 10);
1296         delete[] s;
1297         return TRUE;
1298     }
1299     else return FALSE;
1300 }
1301
1302 bool wxGetResource(const wxString& section, const wxString& entry, int *value, const wxString& file)
1303 {
1304     wxChar *s = NULL;
1305     bool succ = wxGetResource(section, entry, (wxChar **)&s, file);
1306     if (succ)
1307     {
1308         *value = (int)wxStrtol(s, NULL, 10);
1309         delete[] s;
1310         return TRUE;
1311     }
1312     else return FALSE;
1313 }
1314 #endif // wxUSE_RESOURCES
1315
1316 // ---------------------------------------------------------------------------
1317 // helper functions for showing a "busy" cursor
1318 // ---------------------------------------------------------------------------
1319
1320 static HCURSOR gs_wxBusyCursor = 0;     // new, busy cursor
1321 static HCURSOR gs_wxBusyCursorOld = 0;  // old cursor
1322 static int gs_wxBusyCursorCount = 0;
1323
1324 extern HCURSOR wxGetCurrentBusyCursor()
1325 {
1326     return gs_wxBusyCursor;
1327 }
1328
1329 // Set the cursor to the busy cursor for all windows
1330 void wxBeginBusyCursor(wxCursor *cursor)
1331 {
1332     if ( gs_wxBusyCursorCount++ == 0 )
1333     {
1334         gs_wxBusyCursor = (HCURSOR)cursor->GetHCURSOR();
1335 #ifndef __WXMICROWIN__
1336         gs_wxBusyCursorOld = ::SetCursor(gs_wxBusyCursor);
1337 #endif
1338     }
1339     //else: nothing to do, already set
1340 }
1341
1342 // Restore cursor to normal
1343 void wxEndBusyCursor()
1344 {
1345     wxCHECK_RET( gs_wxBusyCursorCount > 0,
1346                  wxT("no matching wxBeginBusyCursor() for wxEndBusyCursor()") );
1347
1348     if ( --gs_wxBusyCursorCount == 0 )
1349     {
1350 #ifndef __WXMICROWIN__
1351         ::SetCursor(gs_wxBusyCursorOld);
1352 #endif
1353         gs_wxBusyCursorOld = 0;
1354     }
1355 }
1356
1357 // TRUE if we're between the above two calls
1358 bool wxIsBusy()
1359 {
1360   return gs_wxBusyCursorCount > 0;
1361 }
1362
1363 // Check whether this window wants to process messages, e.g. Stop button
1364 // in long calculations.
1365 bool wxCheckForInterrupt(wxWindow *wnd)
1366 {
1367     wxCHECK( wnd, FALSE );
1368
1369     MSG msg;
1370     while ( ::PeekMessage(&msg, GetHwndOf(wnd), 0, 0, PM_REMOVE) )
1371     {
1372         ::TranslateMessage(&msg);
1373         ::DispatchMessage(&msg);
1374     }
1375
1376     return TRUE;
1377 }
1378
1379 // MSW only: get user-defined resource from the .res file.
1380 // Returns NULL or newly-allocated memory, so use delete[] to clean up.
1381
1382 #ifndef __WXMICROWIN__
1383 wxChar *wxLoadUserResource(const wxString& resourceName, const wxString& resourceType)
1384 {
1385     HRSRC hResource = ::FindResource(wxGetInstance(), resourceName, resourceType);
1386     if ( hResource == 0 )
1387         return NULL;
1388
1389     HGLOBAL hData = ::LoadResource(wxGetInstance(), hResource);
1390     if ( hData == 0 )
1391         return NULL;
1392
1393     wxChar *theText = (wxChar *)::LockResource(hData);
1394     if ( !theText )
1395         return NULL;
1396
1397     // Not all compilers put a zero at the end of the resource (e.g. BC++ doesn't).
1398     // so we need to find the length of the resource.
1399     int len = ::SizeofResource(wxGetInstance(), hResource);
1400     wxChar  *s = new wxChar[len+1];
1401     wxStrncpy(s,theText,len);
1402     s[len]=0;
1403
1404     // wxChar *s = copystring(theText);
1405
1406     // Obsolete in WIN32
1407 #ifndef __WIN32__
1408     UnlockResource(hData);
1409 #endif
1410
1411     // No need??
1412     //  GlobalFree(hData);
1413
1414     return s;
1415 }
1416 #endif // __WXMICROWIN__
1417
1418 // ----------------------------------------------------------------------------
1419 // get display info
1420 // ----------------------------------------------------------------------------
1421
1422 // See also the wxGetMousePosition in window.cpp
1423 // Deprecated: use wxPoint wxGetMousePosition() instead
1424 void wxGetMousePosition( int* x, int* y )
1425 {
1426     POINT pt;
1427     GetCursorPos( & pt );
1428     if ( x ) *x = pt.x;
1429     if ( y ) *y = pt.y;
1430 };
1431
1432 // Return TRUE if we have a colour display
1433 bool wxColourDisplay()
1434 {
1435 #ifdef __WXMICROWIN__
1436     // MICROWIN_TODO
1437     return TRUE;
1438 #else
1439     // this function is called from wxDC ctor so it is called a *lot* of times
1440     // hence we optimize it a bit but doign the check only once
1441     //
1442     // this should be MT safe as only the GUI thread (holding the GUI mutex)
1443     // can call us
1444     static int s_isColour = -1;
1445
1446     if ( s_isColour == -1 )
1447     {
1448         ScreenHDC dc;
1449         int noCols = ::GetDeviceCaps(dc, NUMCOLORS);
1450
1451         s_isColour = (noCols == -1) || (noCols > 2);
1452     }
1453
1454     return s_isColour != 0;
1455 #endif
1456 }
1457
1458 // Returns depth of screen
1459 int wxDisplayDepth()
1460 {
1461     ScreenHDC dc;
1462     return GetDeviceCaps(dc, PLANES) * GetDeviceCaps(dc, BITSPIXEL);
1463 }
1464
1465 // Get size of display
1466 void wxDisplaySize(int *width, int *height)
1467 {
1468 #ifdef __WXMICROWIN__
1469     RECT rect;
1470     HWND hWnd = GetDesktopWindow();
1471     ::GetWindowRect(hWnd, & rect);
1472
1473     if ( width )
1474         *width = rect.right - rect.left;
1475     if ( height )
1476         *height = rect.bottom - rect.top;
1477 #else // !__WXMICROWIN__
1478     ScreenHDC dc;
1479
1480     if ( width )
1481         *width = ::GetDeviceCaps(dc, HORZRES);
1482     if ( height )
1483         *height = ::GetDeviceCaps(dc, VERTRES);
1484 #endif // __WXMICROWIN__/!__WXMICROWIN__
1485 }
1486
1487 void wxDisplaySizeMM(int *width, int *height)
1488 {
1489 #ifdef __WXMICROWIN__
1490     // MICROWIN_TODO
1491     if ( width )
1492         *width = 0;
1493     if ( height )
1494         *height = 0;
1495 #else
1496     ScreenHDC dc;
1497
1498     if ( width )
1499         *width = ::GetDeviceCaps(dc, HORZSIZE);
1500     if ( height )
1501         *height = ::GetDeviceCaps(dc, VERTSIZE);
1502 #endif
1503 }
1504
1505 void wxClientDisplayRect(int *x, int *y, int *width, int *height)
1506 {
1507 #if defined(__WIN16__) || defined(__WXMICROWIN__)
1508     *x = 0; *y = 0;
1509     wxDisplaySize(width, height);
1510 #else
1511     // Determine the desktop dimensions minus the taskbar and any other
1512     // special decorations...
1513     RECT r;
1514
1515     SystemParametersInfo(SPI_GETWORKAREA, 0, &r, 0);
1516     if (x)      *x = r.left;
1517     if (y)      *y = r.top;
1518     if (width)  *width = r.right - r.left;
1519     if (height) *height = r.bottom - r.top;
1520 #endif
1521 }
1522
1523 // ---------------------------------------------------------------------------
1524 // window information functions
1525 // ---------------------------------------------------------------------------
1526
1527 wxString WXDLLEXPORT wxGetWindowText(WXHWND hWnd)
1528 {
1529     wxString str;
1530
1531     if ( hWnd )
1532     {
1533         int len = GetWindowTextLength((HWND)hWnd) + 1;
1534         ::GetWindowText((HWND)hWnd, str.GetWriteBuf(len), len);
1535         str.UngetWriteBuf();
1536     }
1537
1538     return str;
1539 }
1540
1541 wxString WXDLLEXPORT wxGetWindowClass(WXHWND hWnd)
1542 {
1543     wxString str;
1544
1545     // MICROWIN_TODO
1546 #ifndef __WXMICROWIN__
1547     if ( hWnd )
1548     {
1549         int len = 256; // some starting value
1550
1551         for ( ;; )
1552         {
1553             int count = ::GetClassName((HWND)hWnd, str.GetWriteBuf(len), len);
1554
1555             str.UngetWriteBuf();
1556             if ( count == len )
1557             {
1558                 // the class name might have been truncated, retry with larger
1559                 // buffer
1560                 len *= 2;
1561             }
1562             else
1563             {
1564                 break;
1565             }
1566         }
1567     }
1568 #endif // !__WXMICROWIN__
1569
1570     return str;
1571 }
1572
1573 WXWORD WXDLLEXPORT wxGetWindowId(WXHWND hWnd)
1574 {
1575 #ifndef __WIN32__
1576     return (WXWORD)GetWindowWord((HWND)hWnd, GWW_ID);
1577 #else // Win32
1578     return (WXWORD)GetWindowLong((HWND)hWnd, GWL_ID);
1579 #endif // Win16/32
1580 }
1581
1582 // ----------------------------------------------------------------------------
1583 // Metafile helpers
1584 // ----------------------------------------------------------------------------
1585
1586 extern void PixelToHIMETRIC(LONG *x, LONG *y)
1587 {
1588     ScreenHDC hdcRef;
1589
1590     int iWidthMM = GetDeviceCaps(hdcRef, HORZSIZE),
1591         iHeightMM = GetDeviceCaps(hdcRef, VERTSIZE),
1592         iWidthPels = GetDeviceCaps(hdcRef, HORZRES),
1593         iHeightPels = GetDeviceCaps(hdcRef, VERTRES);
1594
1595     *x *= (iWidthMM * 100);
1596     *x /= iWidthPels;
1597     *y *= (iHeightMM * 100);
1598     *y /= iHeightPels;
1599 }
1600
1601 extern void HIMETRICToPixel(LONG *x, LONG *y)
1602 {
1603     ScreenHDC hdcRef;
1604
1605     int iWidthMM = GetDeviceCaps(hdcRef, HORZSIZE),
1606         iHeightMM = GetDeviceCaps(hdcRef, VERTSIZE),
1607         iWidthPels = GetDeviceCaps(hdcRef, HORZRES),
1608         iHeightPels = GetDeviceCaps(hdcRef, VERTRES);
1609
1610     *x *= iWidthPels;
1611     *x /= (iWidthMM * 100);
1612     *y *= iHeightPels;
1613     *y /= (iHeightMM * 100);
1614 }
1615
1616 #endif // wxUSE_GUI
1617
1618 #ifdef __WXMICROWIN__
1619 int wxGetOsVersion(int *majorVsn, int *minorVsn)
1620 {
1621     // MICROWIN_TODO
1622     if (majorVsn) *majorVsn = 0;
1623     if (minorVsn) *minorVsn = 0;
1624     return wxUNIX;
1625 }
1626 #endif // __WXMICROWIN__
1627
1628 // ----------------------------------------------------------------------------
1629 // Win32 codepage conversion functions
1630 // ----------------------------------------------------------------------------
1631
1632 #if defined(__WIN32__) && !defined(__WXMICROWIN__)
1633
1634 // wxGetNativeFontEncoding() doesn't exist neither in wxBase nor in wxUniv
1635 #if wxUSE_GUI && !defined(__WXUNIVERSAL__)
1636
1637 #include "wx/fontmap.h"
1638
1639 // VZ: the new version of wxCharsetToCodepage() is more politically correct
1640 //     and should work on other Windows versions as well but the old version is
1641 //     still needed for !wxUSE_FONTMAP || !wxUSE_GUI case
1642
1643 extern long wxEncodingToCodepage(wxFontEncoding encoding)
1644 {
1645     // translate encoding into the Windows CHARSET
1646     wxNativeEncodingInfo natveEncInfo;
1647     if ( !wxGetNativeFontEncoding(encoding, &natveEncInfo) )
1648         return -1;
1649
1650     // translate CHARSET to code page
1651     CHARSETINFO csetInfo;
1652     if ( !::TranslateCharsetInfo((DWORD *)(DWORD)natveEncInfo.charset,
1653                                  &csetInfo,
1654                                  TCI_SRCCHARSET) )
1655     {
1656         wxLogLastError(_T("TranslateCharsetInfo(TCI_SRCCHARSET)"));
1657
1658         return -1;
1659     }
1660
1661     return csetInfo.ciACP;
1662 }
1663
1664 #if wxUSE_FONTMAP
1665
1666 extern long wxCharsetToCodepage(const wxChar *name)
1667 {
1668     // first get the font encoding for this charset
1669     if ( !name )
1670         return -1;
1671
1672     wxFontEncoding enc = wxFontMapper::Get()->CharsetToEncoding(name, FALSE);
1673     if ( enc == wxFONTENCODING_SYSTEM )
1674         return -1;
1675
1676     // the use the helper function
1677     return wxEncodingToCodepage(enc);
1678 }
1679
1680 #endif // wxUSE_FONTMAP
1681
1682 #endif // wxUSE_GUI
1683
1684 // include old wxCharsetToCodepage() by OK if needed
1685 #if !wxUSE_GUI || !wxUSE_FONTMAP
1686
1687 #include "wx/msw/registry.h"
1688
1689 // this should work if Internet Exploiter is installed
1690 extern long wxCharsetToCodepage(const wxChar *name)
1691 {
1692     if (!name)
1693         return GetACP();
1694
1695     long CP=-1;
1696
1697     wxString cn(name);
1698     do {
1699         wxString path(wxT("MIME\\Database\\Charset\\"));
1700         path += cn;
1701         wxRegKey key(wxRegKey::HKCR, path);
1702
1703         if (!key.Exists()) break;
1704
1705         // two cases: either there's an AliasForCharset string,
1706         // or there are Codepage and InternetEncoding dwords.
1707         // The InternetEncoding gives us the actual encoding,
1708         // the Codepage just says which Windows character set to
1709         // use when displaying the data.
1710         if (key.HasValue(wxT("InternetEncoding")) &&
1711             key.QueryValue(wxT("InternetEncoding"), &CP)) break;
1712
1713         // no encoding, see if it's an alias
1714         if (!key.HasValue(wxT("AliasForCharset")) ||
1715             !key.QueryValue(wxT("AliasForCharset"), cn)) break;
1716     } while (1);
1717
1718     return CP;
1719 }
1720
1721 #endif // !wxUSE_GUI || !wxUSE_FONTMAP
1722
1723 #endif // Win32
1724