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     {
 605         *value = ret;
 606         return TRUE;
 607     }
 608     else
 609         return FALSE;
 610 #else
 611     // first get the size of the buffer
 612     DWORD dwRet = ::GetEnvironmentVariable(var, NULL, 0);
 613     if ( !dwRet )
 614     {
 615         // this means that there is no such variable
 616         return FALSE;
 617     }
 618
 619     if ( value )
 620     {
 621         (void)::GetEnvironmentVariable(var, value->GetWriteBuf(dwRet), dwRet);
 622         value->UngetWriteBuf();
 623     }
 624
 625     return TRUE;
 626 #endif
 627 }
 628
 629 bool wxSetEnv(const wxString& var, const wxChar *value)
 630 {
 631     // some compilers have putenv() or _putenv() or _wputenv() but it's better
 632     // to always use Win32 function directly instead of dealing with them
 633 #if defined(__WIN32__)
 634     if ( !::SetEnvironmentVariable(var, value) )
 635     {
 636         wxLogLastError(_T("SetEnvironmentVariable"));
 637
 638         return FALSE;
 639     }
 640
 641     return TRUE;
 642 #else // no way to set env vars
 643     return FALSE;
 644 #endif
 645 }
 646
 647 // ----------------------------------------------------------------------------
 648 // process management
 649 // ----------------------------------------------------------------------------
 650
 651 #ifdef __WIN32__
 652
 653 // structure used to pass parameters from wxKill() to wxEnumFindByPidProc()
 654 struct wxFindByPidParams
 655 {
 656     wxFindByPidParams() { hwnd = 0; pid = 0; }
 657
 658     // the HWND used to return the result
 659     HWND hwnd;
 660
 661     // the PID we're looking from
 662     DWORD pid;
 663 };
 664
 665 // wxKill helper: EnumWindows() callback which is used to find the first (top
 666 // level) window belonging to the given process
 667 BOOL CALLBACK wxEnumFindByPidProc(HWND hwnd, LPARAM lParam)
 668 {
 669     DWORD pid;
 670     (void)::GetWindowThreadProcessId(hwnd, &pid);
 671
 672     wxFindByPidParams *params = (wxFindByPidParams *)lParam;
 673     if ( pid == params->pid )
 674     {
 675         // remember the window we found
 676         params->hwnd = hwnd;
 677
 678         // return FALSE to stop the enumeration
 679         return FALSE;
 680     }
 681
 682     // continue enumeration
 683     return TRUE;
 684 }
 685
 686 #endif // __WIN32__
 687
 688 int wxKill(long pid, wxSignal sig, wxKillError *krc)
 689 {
 690 #ifdef __WIN32__
 691     // get the process handle to operate on
 692     HANDLE hProcess = ::OpenProcess(SYNCHRONIZE |
 693                                     PROCESS_TERMINATE |
 694                                     PROCESS_QUERY_INFORMATION,
 695                                     FALSE, // not inheritable
 696                                     (DWORD)pid);
 697     if ( hProcess == NULL )
 698     {
 699         if ( krc )
 700         {
 701             if ( ::GetLastError() == ERROR_ACCESS_DENIED )
 702             {
 703                 *krc = wxKILL_ACCESS_DENIED;
 704             }
 705             else
 706             {
 707                 *krc = wxKILL_NO_PROCESS;
 708             }
 709         }
 710
 711         return -1;
 712     }
 713
 714     bool ok = TRUE;
 715     switch ( sig )
 716     {
 717         case wxSIGKILL:
 718             // kill the process forcefully returning -1 as error code
 719             if ( !::TerminateProcess(hProcess, (UINT)-1) )
 720             {
 721                 wxLogSysError(_("Failed to kill process %d"), pid);
 722
 723                 if ( krc )
 724                 {
 725                     // this is not supposed to happen if we could open the
 726                     // process
 727                     *krc = wxKILL_ERROR;
 728                 }
 729
 730                 ok = FALSE;
 731             }
 732             break;
 733
 734         case wxSIGNONE:
 735             // do nothing, we just want to test for process existence
 736             break;
 737
 738         default:
 739             // any other signal means "terminate"
 740             {
 741                 wxFindByPidParams params;
 742                 params.pid = (DWORD)pid;
 743
 744                 // EnumWindows() has nice semantics: it returns 0 if it found
 745                 // something or if an error occured and non zero if it
 746                 // enumerated all the window
 747                 if ( !::EnumWindows(wxEnumFindByPidProc, (LPARAM)&params) )
 748                 {
 749                     // did we find any window?
 750                     if ( params.hwnd )
 751                     {
 752                         // tell the app to close
 753                         //
 754                         // NB: this is the harshest way, the app won't have
 755                         //     opportunity to save any files, for example, but
 756                         //     this is probably what we want here. If not we
 757                         //     can also use SendMesageTimeout(WM_CLOSE)
 758                         if ( !::PostMessage(params.hwnd, WM_QUIT, 0, 0) )
 759                         {
 760                             wxLogLastError(_T("PostMessage(WM_QUIT)"));
 761                         }
 762                     }
 763                     else // it was an error then
 764                     {
 765                         wxLogLastError(_T("EnumWindows"));
 766
 767                         ok = FALSE;
 768                     }
 769                 }
 770                 else // no windows for this PID
 771                 {
 772                     if ( krc )
 773                     {
 774                         *krc = wxKILL_ERROR;
 775                     }
 776
 777                     ok = FALSE;
 778                 }
 779             }
 780     }
 781
 782     // the return code
 783     DWORD rc;
 784
 785     if ( ok )
 786     {
 787         // as we wait for a short time, we can use just WaitForSingleObject()
 788         // and not MsgWaitForMultipleObjects()
 789         switch ( ::WaitForSingleObject(hProcess, 500 /* msec */) )
 790         {
 791             case WAIT_OBJECT_0:
 792                 // process terminated
 793                 if ( !::GetExitCodeProcess(hProcess, &rc) )
 794                 {
 795                     wxLogLastError(_T("GetExitCodeProcess"));
 796                 }
 797                 break;
 798
 799             default:
 800                 wxFAIL_MSG( _T("unexpected WaitForSingleObject() return") );
 801                 // fall through
 802
 803             case WAIT_FAILED:
 804                 wxLogLastError(_T("WaitForSingleObject"));
 805                 // fall through
 806
 807             case WAIT_TIMEOUT:
 808                 if ( krc )
 809                 {
 810                     *krc = wxKILL_ERROR;
 811                 }
 812
 813                 rc = STILL_ACTIVE;
 814                 break;
 815         }
 816     }
 817     else // !ok
 818     {
 819         // just to suppress the warnings about uninitialized variable
 820         rc = 0;
 821     }
 822
 823     ::CloseHandle(hProcess);
 824
 825     // the return code is the same as from Unix kill(): 0 if killed
 826     // successfully or -1 on error
 827     if ( sig == wxSIGNONE )
 828     {
 829         if ( ok && rc == STILL_ACTIVE )
 830         {
 831             // there is such process => success
 832             return 0;
 833         }
 834     }
 835     else // not SIGNONE
 836     {
 837         if ( ok && rc != STILL_ACTIVE )
 838         {
 839             // killed => success
 840             return 0;
 841         }
 842     }
 843 #else // Win16
 844     wxFAIL_MSG( _T("not implemented") );
 845 #endif // Win32/Win16
 846
 847     // error
 848     return -1;
 849 }
 850
 851 // Execute a program in an Interactive Shell
 852 bool wxShell(const wxString& command)
 853 {
 854     wxChar *shell = wxGetenv(wxT("COMSPEC"));
 855     if ( !shell )
 856         shell = (wxChar*) wxT("\\COMMAND.COM");
 857
 858     wxString cmd;
 859     if ( !command )
 860     {
 861         // just the shell
 862         cmd = shell;
 863     }
 864     else
 865     {
 866         // pass the command to execute to the command processor
 867         cmd.Printf(wxT("%s /c %s"), shell, command.c_str());
 868     }
 869
 870     return wxExecute(cmd, wxEXEC_SYNC) == 0;
 871 }
 872
 873 // Shutdown or reboot the PC
 874 bool wxShutdown(wxShutdownFlags wFlags)
 875 {
 876 #ifdef __WIN32__
 877     bool bOK = TRUE;
 878
 879     if ( wxGetOsVersion(NULL, NULL) == wxWINDOWS_NT ) // if is NT or 2K
 880     {
 881         // Get a token for this process.
 882         HANDLE hToken;
 883         bOK = ::OpenProcessToken(GetCurrentProcess(),
 884                                  TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY,
 885                                  &hToken) != 0;
 886 #ifndef __WXWINE__
 887         if ( bOK )
 888         {
 889             TOKEN_PRIVILEGES tkp;
 890
 891             // Get the LUID for the shutdown privilege.
 892             ::LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,
 893                                    &tkp.Privileges[0].Luid);
 894
 895             tkp.PrivilegeCount = 1;  // one privilege to set
 896             tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
 897
 898             // Get the shutdown privilege for this process.
 899             ::AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,
 900                                     (PTOKEN_PRIVILEGES)NULL, 0);
 901
 902             // Cannot test the return value of AdjustTokenPrivileges.
 903             bOK = ::GetLastError() == ERROR_SUCCESS;
 904         }
 905 #endif
 906     }
 907
 908     if ( bOK )
 909     {
 910         UINT flags = EWX_SHUTDOWN | EWX_FORCE;
 911         switch ( wFlags )
 912         {
 913             case wxSHUTDOWN_POWEROFF:
 914                 flags |= EWX_POWEROFF;
 915                 break;
 916
 917             case wxSHUTDOWN_REBOOT:
 918                 flags |= EWX_REBOOT;
 919                 break;
 920
 921             default:
 922                 wxFAIL_MSG( _T("unknown wxShutdown() flag") );
 923                 return FALSE;
 924         }
 925
 926         bOK = ::ExitWindowsEx(EWX_SHUTDOWN | EWX_FORCE | EWX_REBOOT, 0) != 0;
 927     }
 928
 929     return bOK;
 930 #else // Win16
 931     return FALSE;
 932 #endif // Win32/16
 933 }
 934
 935 // ----------------------------------------------------------------------------
 936 // misc
 937 // ----------------------------------------------------------------------------
 938
 939 // Get free memory in bytes, or -1 if cannot determine amount (e.g. on UNIX)
 940 long wxGetFreeMemory()
 941 {
 942 #if defined(__WIN32__) && !defined(__BORLANDC__) && !defined(__TWIN32__)
 943     MEMORYSTATUS memStatus;
 944     memStatus.dwLength = sizeof(MEMORYSTATUS);
 945     GlobalMemoryStatus(&memStatus);
 946     return memStatus.dwAvailPhys;
 947 #else
 948     return (long)GetFreeSpace(0);
 949 #endif
 950 }
 951
 952 unsigned long wxGetProcessId()
 953 {
 954 #ifdef __WIN32__
 955     return ::GetCurrentProcessId();
 956 #else
 957     return 0;
 958 #endif
 959 }
 960
 961 // Emit a beeeeeep
 962 void wxBell()
 963 {
 964     ::MessageBeep((UINT)-1);        // default sound
 965 }
 966
 967 wxString wxGetOsDescription()
 968 {
 969 #ifdef __WIN32__
 970     wxString str;
 971
 972     OSVERSIONINFO info;
 973     wxZeroMemory(info);
 974
 975     info.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
 976     if ( ::GetVersionEx(&info) )
 977     {
 978         switch ( info.dwPlatformId )
 979         {
 980             case VER_PLATFORM_WIN32s:
 981                 str = _("Win32s on Windows 3.1");
 982                 break;
 983
 984             case VER_PLATFORM_WIN32_WINDOWS:
 985                 str.Printf(_("Windows 9%c"),
 986                            info.dwMinorVersion == 0 ? _T('5') : _T('8'));
 987                 if ( !wxIsEmpty(info.szCSDVersion) )
 988                 {
 989                     str << _T(" (") << info.szCSDVersion << _T(')');
 990                 }
 991                 break;
 992
 993             case VER_PLATFORM_WIN32_NT:
 994                 str.Printf(_T("Windows NT %lu.%lu (build %lu"),
 995                            info.dwMajorVersion,
 996                            info.dwMinorVersion,
 997                            info.dwBuildNumber);
 998                 if ( !wxIsEmpty(info.szCSDVersion) )
 999                 {
1000                     str << _T(", ") << info.szCSDVersion;
1001                 }
1002                 str << _T(')');
1003                 break;
1004         }
1005     }
1006     else
1007     {
1008         wxFAIL_MSG( _T("GetVersionEx() failed") ); // should never happen
1009     }
1010
1011     return str;
1012 #else // Win16
1013     return _("Windows 3.1");
1014 #endif // Win32/16
1015 }
1016
1017 int wxGetOsVersion(int *majorVsn, int *minorVsn)
1018 {
1019 #if defined(__WIN32__) && !defined(__SC__)
1020     static int ver = -1, major = -1, minor = -1;
1021
1022     if ( ver == -1 )
1023     {
1024         OSVERSIONINFO info;
1025         wxZeroMemory(info);
1026
1027         ver = wxWINDOWS;
1028         info.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
1029         if ( ::GetVersionEx(&info) )
1030         {
1031             major = info.dwMajorVersion;
1032             minor = info.dwMinorVersion;
1033
1034             switch ( info.dwPlatformId )
1035             {
1036                 case VER_PLATFORM_WIN32s:
1037                     ver = wxWIN32S;
1038                     break;
1039
1040                 case VER_PLATFORM_WIN32_WINDOWS:
1041                     ver = wxWIN95;
1042                     break;
1043
1044                 case VER_PLATFORM_WIN32_NT:
1045                     ver = wxWINDOWS_NT;
1046                     break;
1047             }
1048         }
1049     }
1050
1051     if (majorVsn && major != -1)
1052         *majorVsn = major;
1053     if (minorVsn && minor != -1)
1054         *minorVsn = minor;
1055
1056     return ver;
1057 #else // Win16
1058     int retValue = wxWINDOWS;
1059     #ifdef __WINDOWS_386__
1060         retValue = wxWIN386;
1061     #else
1062         #if !defined(__WATCOMC__) && !defined(GNUWIN32) && wxUSE_PENWINDOWS
1063             extern HANDLE g_hPenWin;
1064             retValue = g_hPenWin ? wxPENWINDOWS : wxWINDOWS;
1065         #endif
1066     #endif
1067
1068     if (majorVsn)
1069         *majorVsn = 3;
1070     if (minorVsn)
1071         *minorVsn = 1;
1072
1073     return retValue;
1074 #endif
1075 }
1076
1077 // ----------------------------------------------------------------------------
1078 // sleep functions
1079 // ----------------------------------------------------------------------------
1080
1081 #if wxUSE_GUI
1082
1083 #if wxUSE_TIMER
1084
1085 // Sleep for nSecs seconds. Attempt a Windows implementation using timers.
1086 static bool gs_inTimer = FALSE;
1087
1088 class wxSleepTimer : public wxTimer
1089 {
1090 public:
1091     virtual void Notify()
1092     {
1093         gs_inTimer = FALSE;
1094         Stop();
1095     }
1096 };
1097
1098 static wxTimer *wxTheSleepTimer = NULL;
1099
1100 void wxUsleep(unsigned long milliseconds)
1101 {
1102 #ifdef __WIN32__
1103     ::Sleep(milliseconds);
1104 #else // !Win32
1105     if (gs_inTimer)
1106         return;
1107
1108     wxTheSleepTimer = new wxSleepTimer;
1109     gs_inTimer = TRUE;
1110     wxTheSleepTimer->Start(milliseconds);
1111     while (gs_inTimer)
1112     {
1113         if (wxTheApp->Pending())
1114             wxTheApp->Dispatch();
1115     }
1116     delete wxTheSleepTimer;
1117     wxTheSleepTimer = NULL;
1118 #endif // Win32/!Win32
1119 }
1120
1121 void wxSleep(int nSecs)
1122 {
1123     if (gs_inTimer)
1124         return;
1125
1126     wxTheSleepTimer = new wxSleepTimer;
1127     gs_inTimer = TRUE;
1128     wxTheSleepTimer->Start(nSecs*1000);
1129     while (gs_inTimer)
1130     {
1131         if (wxTheApp->Pending())
1132             wxTheApp->Dispatch();
1133     }
1134     delete wxTheSleepTimer;
1135     wxTheSleepTimer = NULL;
1136 }
1137
1138 // Consume all events until no more left
1139 void wxFlushEvents()
1140 {
1141 //  wxYield();
1142 }
1143
1144 #endif // wxUSE_TIMER
1145
1146 #elif defined(__WIN32__) // wxUSE_GUI
1147
1148 void wxUsleep(unsigned long milliseconds)
1149 {
1150     ::Sleep(milliseconds);
1151 }
1152
1153 void wxSleep(int nSecs)
1154 {
1155     wxUsleep(1000*nSecs);
1156 }
1157
1158 #endif // wxUSE_GUI/!wxUSE_GUI
1159 #endif // __WXMICROWIN__
1160
1161 // ----------------------------------------------------------------------------
1162 // deprecated (in favour of wxLog) log functions
1163 // ----------------------------------------------------------------------------
1164
1165 #if WXWIN_COMPATIBILITY_2_2
1166
1167 // Output a debug mess., in a system dependent fashion.
1168 #ifndef __WXMICROWIN__
1169 void wxDebugMsg(const wxChar *fmt ...)
1170 {
1171   va_list ap;
1172   static wxChar buffer[512];
1173
1174   if (!wxTheApp->GetWantDebugOutput())
1175     return;
1176
1177   va_start(ap, fmt);
1178
1179   wvsprintf(buffer,fmt,ap);
1180   OutputDebugString((LPCTSTR)buffer);
1181
1182   va_end(ap);
1183 }
1184
1185 // Non-fatal error: pop up message box and (possibly) continue
1186 void wxError(const wxString& msg, const wxString& title)
1187 {
1188   wxSprintf(wxBuffer, wxT("%s\nContinue?"), WXSTRINGCAST msg);
1189   if (MessageBox(NULL, (LPCTSTR)wxBuffer, (LPCTSTR)WXSTRINGCAST title,
1190              MB_ICONSTOP | MB_YESNO) == IDNO)
1191     wxExit();
1192 }
1193
1194 // Fatal error: pop up message box and abort
1195 void wxFatalError(const wxString& msg, const wxString& title)
1196 {
1197   wxSprintf(wxBuffer, wxT("%s: %s"), WXSTRINGCAST title, WXSTRINGCAST msg);
1198   FatalAppExit(0, (LPCTSTR)wxBuffer);
1199 }
1200 #endif // __WXMICROWIN__
1201
1202 #endif // WXWIN_COMPATIBILITY_2_2
1203
1204 #if wxUSE_GUI
1205
1206 // ----------------------------------------------------------------------------
1207 // functions to work with .INI files
1208 // ----------------------------------------------------------------------------
1209
1210 // Reading and writing resources (eg WIN.INI, .Xdefaults)
1211 #if wxUSE_RESOURCES
1212 bool wxWriteResource(const wxString& section, const wxString& entry, const wxString& value, const wxString& file)
1213 {
1214   if (file != wxT(""))
1215 // Don't know what the correct cast should be, but it doesn't
1216 // compile in BC++/16-bit without this cast.
1217 #if !defined(__WIN32__)
1218     return (WritePrivateProfileString((const char*) section, (const char*) entry, (const char*) value, (const char*) file) != 0);
1219 #else
1220     return (WritePrivateProfileString((LPCTSTR)WXSTRINGCAST section, (LPCTSTR)WXSTRINGCAST entry, (LPCTSTR)value, (LPCTSTR)WXSTRINGCAST file) != 0);
1221 #endif
1222   else
1223     return (WriteProfileString((LPCTSTR)WXSTRINGCAST section, (LPCTSTR)WXSTRINGCAST entry, (LPCTSTR)WXSTRINGCAST value) != 0);
1224 }
1225
1226 bool wxWriteResource(const wxString& section, const wxString& entry, float value, const wxString& file)
1227 {
1228     wxString buf;
1229     buf.Printf(wxT("%.4f"), value);
1230
1231     return wxWriteResource(section, entry, buf, file);
1232 }
1233
1234 bool wxWriteResource(const wxString& section, const wxString& entry, long value, const wxString& file)
1235 {
1236     wxString buf;
1237     buf.Printf(wxT("%ld"), value);
1238
1239     return wxWriteResource(section, entry, buf, file);
1240 }
1241
1242 bool wxWriteResource(const wxString& section, const wxString& entry, int value, const wxString& file)
1243 {
1244     wxString buf;
1245     buf.Printf(wxT("%d"), value);
1246
1247     return wxWriteResource(section, entry, buf, file);
1248 }
1249
1250 bool wxGetResource(const wxString& section, const wxString& entry, wxChar **value, const wxString& file)
1251 {
1252     static const wxChar defunkt[] = wxT("$$default");
1253     if (file != wxT(""))
1254     {
1255         int n = GetPrivateProfileString((LPCTSTR)WXSTRINGCAST section, (LPCTSTR)WXSTRINGCAST entry, (LPCTSTR)defunkt,
1256                 (LPTSTR)wxBuffer, 1000, (LPCTSTR)WXSTRINGCAST file);
1257         if (n == 0 || wxStrcmp(wxBuffer, defunkt) == 0)
1258             return FALSE;
1259     }
1260     else
1261     {
1262         int n = GetProfileString((LPCTSTR)WXSTRINGCAST section, (LPCTSTR)WXSTRINGCAST entry, (LPCTSTR)defunkt,
1263                 (LPTSTR)wxBuffer, 1000);
1264         if (n == 0 || wxStrcmp(wxBuffer, defunkt) == 0)
1265             return FALSE;
1266     }
1267     if (*value) delete[] (*value);
1268     *value = copystring(wxBuffer);
1269     return TRUE;
1270 }
1271
1272 bool wxGetResource(const wxString& section, const wxString& entry, float *value, const wxString& file)
1273 {
1274     wxChar *s = NULL;
1275     bool succ = wxGetResource(section, entry, (wxChar **)&s, file);
1276     if (succ)
1277     {
1278         *value = (float)wxStrtod(s, NULL);
1279         delete[] s;
1280         return TRUE;
1281     }
1282     else return FALSE;
1283 }
1284
1285 bool wxGetResource(const wxString& section, const wxString& entry, long *value, const wxString& file)
1286 {
1287     wxChar *s = NULL;
1288     bool succ = wxGetResource(section, entry, (wxChar **)&s, file);
1289     if (succ)
1290     {
1291         *value = wxStrtol(s, NULL, 10);
1292         delete[] s;
1293         return TRUE;
1294     }
1295     else return FALSE;
1296 }
1297
1298 bool wxGetResource(const wxString& section, const wxString& entry, int *value, const wxString& file)
1299 {
1300     wxChar *s = NULL;
1301     bool succ = wxGetResource(section, entry, (wxChar **)&s, file);
1302     if (succ)
1303     {
1304         *value = (int)wxStrtol(s, NULL, 10);
1305         delete[] s;
1306         return TRUE;
1307     }
1308     else return FALSE;
1309 }
1310 #endif // wxUSE_RESOURCES
1311
1312 // ---------------------------------------------------------------------------
1313 // helper functions for showing a "busy" cursor
1314 // ---------------------------------------------------------------------------
1315
1316 static HCURSOR gs_wxBusyCursor = 0;     // new, busy cursor
1317 static HCURSOR gs_wxBusyCursorOld = 0;  // old cursor
1318 static int gs_wxBusyCursorCount = 0;
1319
1320 extern HCURSOR wxGetCurrentBusyCursor()
1321 {
1322     return gs_wxBusyCursor;
1323 }
1324
1325 // Set the cursor to the busy cursor for all windows
1326 void wxBeginBusyCursor(wxCursor *cursor)
1327 {
1328     if ( gs_wxBusyCursorCount++ == 0 )
1329     {
1330         gs_wxBusyCursor = (HCURSOR)cursor->GetHCURSOR();
1331 #ifndef __WXMICROWIN__
1332         gs_wxBusyCursorOld = ::SetCursor(gs_wxBusyCursor);
1333 #endif
1334     }
1335     //else: nothing to do, already set
1336 }
1337
1338 // Restore cursor to normal
1339 void wxEndBusyCursor()
1340 {
1341     wxCHECK_RET( gs_wxBusyCursorCount > 0,
1342                  wxT("no matching wxBeginBusyCursor() for wxEndBusyCursor()") );
1343
1344     if ( --gs_wxBusyCursorCount == 0 )
1345     {
1346 #ifndef __WXMICROWIN__
1347         ::SetCursor(gs_wxBusyCursorOld);
1348 #endif
1349         gs_wxBusyCursorOld = 0;
1350     }
1351 }
1352
1353 // TRUE if we're between the above two calls
1354 bool wxIsBusy()
1355 {
1356   return gs_wxBusyCursorCount > 0;
1357 }
1358
1359 // Check whether this window wants to process messages, e.g. Stop button
1360 // in long calculations.
1361 bool wxCheckForInterrupt(wxWindow *wnd)
1362 {
1363     wxCHECK( wnd, FALSE );
1364
1365     MSG msg;
1366     while ( ::PeekMessage(&msg, GetHwndOf(wnd), 0, 0, PM_REMOVE) )
1367     {
1368         ::TranslateMessage(&msg);
1369         ::DispatchMessage(&msg);
1370     }
1371
1372     return TRUE;
1373 }
1374
1375 // MSW only: get user-defined resource from the .res file.
1376 // Returns NULL or newly-allocated memory, so use delete[] to clean up.
1377
1378 #ifndef __WXMICROWIN__
1379 wxChar *wxLoadUserResource(const wxString& resourceName, const wxString& resourceType)
1380 {
1381     HRSRC hResource = ::FindResource(wxGetInstance(), resourceName, resourceType);
1382     if ( hResource == 0 )
1383         return NULL;
1384
1385     HGLOBAL hData = ::LoadResource(wxGetInstance(), hResource);
1386     if ( hData == 0 )
1387         return NULL;
1388
1389     wxChar *theText = (wxChar *)::LockResource(hData);
1390     if ( !theText )
1391         return NULL;
1392
1393     // Not all compilers put a zero at the end of the resource (e.g. BC++ doesn't).
1394     // so we need to find the length of the resource.
1395     int len = ::SizeofResource(wxGetInstance(), hResource);
1396     wxChar  *s = new wxChar[len+1];
1397     wxStrncpy(s,theText,len);
1398     s[len]=0;
1399
1400     // wxChar *s = copystring(theText);
1401
1402     // Obsolete in WIN32
1403 #ifndef __WIN32__
1404     UnlockResource(hData);
1405 #endif
1406
1407     // No need??
1408     //  GlobalFree(hData);
1409
1410     return s;
1411 }
1412 #endif // __WXMICROWIN__
1413
1414 // ----------------------------------------------------------------------------
1415 // get display info
1416 // ----------------------------------------------------------------------------
1417
1418 // See also the wxGetMousePosition in window.cpp
1419 // Deprecated: use wxPoint wxGetMousePosition() instead
1420 void wxGetMousePosition( int* x, int* y )
1421 {
1422     POINT pt;
1423     GetCursorPos( & pt );
1424     if ( x ) *x = pt.x;
1425     if ( y ) *y = pt.y;
1426 };
1427
1428 // Return TRUE if we have a colour display
1429 bool wxColourDisplay()
1430 {
1431 #ifdef __WXMICROWIN__
1432     // MICROWIN_TODO
1433     return TRUE;
1434 #else
1435     // this function is called from wxDC ctor so it is called a *lot* of times
1436     // hence we optimize it a bit but doign the check only once
1437     //
1438     // this should be MT safe as only the GUI thread (holding the GUI mutex)
1439     // can call us
1440     static int s_isColour = -1;
1441
1442     if ( s_isColour == -1 )
1443     {
1444         ScreenHDC dc;
1445         int noCols = ::GetDeviceCaps(dc, NUMCOLORS);
1446
1447         s_isColour = (noCols == -1) || (noCols > 2);
1448     }
1449
1450     return s_isColour != 0;
1451 #endif
1452 }
1453
1454 // Returns depth of screen
1455 int wxDisplayDepth()
1456 {
1457     ScreenHDC dc;
1458     return GetDeviceCaps(dc, PLANES) * GetDeviceCaps(dc, BITSPIXEL);
1459 }
1460
1461 // Get size of display
1462 void wxDisplaySize(int *width, int *height)
1463 {
1464 #ifdef __WXMICROWIN__
1465     RECT rect;
1466     HWND hWnd = GetDesktopWindow();
1467     ::GetWindowRect(hWnd, & rect);
1468
1469     if ( width )
1470         *width = rect.right - rect.left;
1471     if ( height )
1472         *height = rect.bottom - rect.top;
1473 #else // !__WXMICROWIN__
1474     ScreenHDC dc;
1475
1476     if ( width )
1477         *width = ::GetDeviceCaps(dc, HORZRES);
1478     if ( height )
1479         *height = ::GetDeviceCaps(dc, VERTRES);
1480 #endif // __WXMICROWIN__/!__WXMICROWIN__
1481 }
1482
1483 void wxDisplaySizeMM(int *width, int *height)
1484 {
1485 #ifdef __WXMICROWIN__
1486     // MICROWIN_TODO
1487     if ( width )
1488         *width = 0;
1489     if ( height )
1490         *height = 0;
1491 #else
1492     ScreenHDC dc;
1493
1494     if ( width )
1495         *width = ::GetDeviceCaps(dc, HORZSIZE);
1496     if ( height )
1497         *height = ::GetDeviceCaps(dc, VERTSIZE);
1498 #endif
1499 }
1500
1501 void wxClientDisplayRect(int *x, int *y, int *width, int *height)
1502 {
1503 #if defined(__WIN16__) || defined(__WXMICROWIN__)
1504     *x = 0; *y = 0;
1505     wxDisplaySize(width, height);
1506 #else
1507     // Determine the desktop dimensions minus the taskbar and any other
1508     // special decorations...
1509     RECT r;
1510
1511     SystemParametersInfo(SPI_GETWORKAREA, 0, &r, 0);
1512     if (x)      *x = r.left;
1513     if (y)      *y = r.top;
1514     if (width)  *width = r.right - r.left;
1515     if (height) *height = r.bottom - r.top;
1516 #endif
1517 }
1518
1519 // ---------------------------------------------------------------------------
1520 // window information functions
1521 // ---------------------------------------------------------------------------
1522
1523 wxString WXDLLEXPORT wxGetWindowText(WXHWND hWnd)
1524 {
1525     wxString str;
1526
1527     if ( hWnd )
1528     {
1529         int len = GetWindowTextLength((HWND)hWnd) + 1;
1530         ::GetWindowText((HWND)hWnd, str.GetWriteBuf(len), len);
1531         str.UngetWriteBuf();
1532     }
1533
1534     return str;
1535 }
1536
1537 wxString WXDLLEXPORT wxGetWindowClass(WXHWND hWnd)
1538 {
1539     wxString str;
1540
1541     // MICROWIN_TODO
1542 #ifndef __WXMICROWIN__
1543     if ( hWnd )
1544     {
1545         int len = 256; // some starting value
1546
1547         for ( ;; )
1548         {
1549             int count = ::GetClassName((HWND)hWnd, str.GetWriteBuf(len), len);
1550
1551             str.UngetWriteBuf();
1552             if ( count == len )
1553             {
1554                 // the class name might have been truncated, retry with larger
1555                 // buffer
1556                 len *= 2;
1557             }
1558             else
1559             {
1560                 break;
1561             }
1562         }
1563     }
1564 #endif // !__WXMICROWIN__
1565
1566     return str;
1567 }
1568
1569 WXWORD WXDLLEXPORT wxGetWindowId(WXHWND hWnd)
1570 {
1571 #ifndef __WIN32__
1572     return (WXWORD)GetWindowWord((HWND)hWnd, GWW_ID);
1573 #else // Win32
1574     return (WXWORD)GetWindowLong((HWND)hWnd, GWL_ID);
1575 #endif // Win16/32
1576 }
1577
1578 // ----------------------------------------------------------------------------
1579 // Metafile helpers
1580 // ----------------------------------------------------------------------------
1581
1582 extern void PixelToHIMETRIC(LONG *x, LONG *y)
1583 {
1584     ScreenHDC hdcRef;
1585
1586     int iWidthMM = GetDeviceCaps(hdcRef, HORZSIZE),
1587         iHeightMM = GetDeviceCaps(hdcRef, VERTSIZE),
1588         iWidthPels = GetDeviceCaps(hdcRef, HORZRES),
1589         iHeightPels = GetDeviceCaps(hdcRef, VERTRES);
1590
1591     *x *= (iWidthMM * 100);
1592     *x /= iWidthPels;
1593     *y *= (iHeightMM * 100);
1594     *y /= iHeightPels;
1595 }
1596
1597 extern void HIMETRICToPixel(LONG *x, LONG *y)
1598 {
1599     ScreenHDC hdcRef;
1600
1601     int iWidthMM = GetDeviceCaps(hdcRef, HORZSIZE),
1602         iHeightMM = GetDeviceCaps(hdcRef, VERTSIZE),
1603         iWidthPels = GetDeviceCaps(hdcRef, HORZRES),
1604         iHeightPels = GetDeviceCaps(hdcRef, VERTRES);
1605
1606     *x *= iWidthPels;
1607     *x /= (iWidthMM * 100);
1608     *y *= iHeightPels;
1609     *y /= (iHeightMM * 100);
1610 }
1611
1612 #endif // wxUSE_GUI
1613
1614 #ifdef __WXMICROWIN__
1615 int wxGetOsVersion(int *majorVsn, int *minorVsn)
1616 {
1617     // MICROWIN_TODO
1618     if (majorVsn) *majorVsn = 0;
1619     if (minorVsn) *minorVsn = 0;
1620     return wxUNIX;
1621 }
1622 #endif // __WXMICROWIN__
1623
1624 // ----------------------------------------------------------------------------
1625 // Win32 codepage conversion functions
1626 // ----------------------------------------------------------------------------
1627
1628 #if defined(__WIN32__) && !defined(__WXMICROWIN__)
1629
1630 // wxGetNativeFontEncoding() doesn't exist neither in wxBase nor in wxUniv
1631 #if wxUSE_GUI && !defined(__WXUNIVERSAL__)
1632
1633 #include "wx/fontmap.h"
1634
1635 // VZ: the new version of wxCharsetToCodepage() is more politically correct
1636 //     and should work on other Windows versions as well but the old version is
1637 //     still needed for !wxUSE_FONTMAP || !wxUSE_GUI case
1638
1639 extern long wxEncodingToCodepage(wxFontEncoding encoding)
1640 {
1641     // translate encoding into the Windows CHARSET
1642     wxNativeEncodingInfo natveEncInfo;
1643     if ( !wxGetNativeFontEncoding(encoding, &natveEncInfo) )
1644         return -1;
1645
1646     // translate CHARSET to code page
1647     CHARSETINFO csetInfo;
1648     if ( !::TranslateCharsetInfo((DWORD *)(DWORD)natveEncInfo.charset,
1649                                  &csetInfo,
1650                                  TCI_SRCCHARSET) )
1651     {
1652         wxLogLastError(_T("TranslateCharsetInfo(TCI_SRCCHARSET)"));
1653
1654         return -1;
1655     }
1656
1657     return csetInfo.ciACP;
1658 }
1659
1660 #if wxUSE_FONTMAP
1661
1662 extern long wxCharsetToCodepage(const wxChar *name)
1663 {
1664     // first get the font encoding for this charset
1665     if ( !name )
1666         return -1;
1667
1668     wxFontEncoding enc = wxFontMapper::Get()->CharsetToEncoding(name, FALSE);
1669     if ( enc == wxFONTENCODING_SYSTEM )
1670         return -1;
1671
1672     // the use the helper function
1673     return wxEncodingToCodepage(enc);
1674 }
1675
1676 #endif // wxUSE_FONTMAP
1677
1678 #endif // wxUSE_GUI
1679
1680 // include old wxCharsetToCodepage() by OK if needed
1681 #if !wxUSE_GUI || !wxUSE_FONTMAP
1682
1683 #include "wx/msw/registry.h"
1684
1685 // this should work if Internet Exploiter is installed
1686 extern long wxCharsetToCodepage(const wxChar *name)
1687 {
1688     if (!name)
1689         return GetACP();
1690
1691     long CP=-1;
1692
1693     wxString cn(name);
1694     do {
1695         wxString path(wxT("MIME\\Database\\Charset\\"));
1696         path += cn;
1697         wxRegKey key(wxRegKey::HKCR, path);
1698
1699         if (!key.Exists()) break;
1700
1701         // two cases: either there's an AliasForCharset string,
1702         // or there are Codepage and InternetEncoding dwords.
1703         // The InternetEncoding gives us the actual encoding,
1704         // the Codepage just says which Windows character set to
1705         // use when displaying the data.
1706         if (key.HasValue(wxT("InternetEncoding")) &&
1707             key.QueryValue(wxT("InternetEncoding"), &CP)) break;
1708
1709         // no encoding, see if it's an alias
1710         if (!key.HasValue(wxT("AliasForCharset")) ||
1711             !key.QueryValue(wxT("AliasForCharset"), cn)) break;
1712     } while (1);
1713
1714     return CP;
1715 }
1716
1717 #endif // !wxUSE_GUI || !wxUSE_FONTMAP
1718
1719 #endif // Win32
1720