src/msw/utils.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        msw/utils.cpp
   3 // Purpose:     Various utilities
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21 // #pragma implementation "utils.h"   // Note: this is done in utilscmn.cpp now.
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/utils.h"
  33     #include "wx/app.h"
  34     #include "wx/intl.h"
  35     #include "wx/log.h"
  36 #if wxUSE_GUI
  37     #include "wx/cursor.h"
  38 #endif
  39 #endif  //WX_PRECOMP
  40
  41 #include "wx/msw/private.h"     // includes <windows.h>
  42
  43 #ifdef __GNUWIN32_OLD__
  44     // apparently we need to include winsock.h to get WSADATA and other stuff
  45     // used in wxGetFullHostName() with the old mingw32 versions
  46     #include <winsock.h>
  47 #endif
  48
  49 #include "wx/timer.h"
  50
  51 #if !defined(__GNUWIN32__) && !defined(__SALFORDC__) && !defined(__WXMICROWIN__)
  52     #include <direct.h>
  53
  54     #ifndef __MWERKS__
  55         #include <dos.h>
  56     #endif
  57 #endif  //GNUWIN32
  58
  59 #if defined(__CYGWIN__) && !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(__WXMICROWIN__)
  82     #ifndef __UNIX__
  83         #include <io.h>
  84     #endif
  85
  86     #ifndef __GNUWIN32__
  87         #include <shellapi.h>
  88     #endif
  89 #endif
  90
  91 #ifndef __WATCOMC__
  92     #if !(defined(_MSC_VER) && (_MSC_VER > 800))
  93         #include <errno.h>
  94     #endif
  95 #endif
  96
  97 //// BEGIN for console support: VC++ only
  98 #ifdef __VISUALC__
  99
 100 #include "wx/msw/msvcrt.h"
 101
 102 #include <fcntl.h>
 103
 104 #include "wx/ioswrap.h"
 105
 106 /* Need to undef new if including crtdbg.h */
 107 #  ifdef new
 108 #  undef new
 109 #  endif
 110
 111 #ifndef __WIN16__
 112 #  include <crtdbg.h>
 113 #endif
 114
 115 #  if defined(__WXDEBUG__) && wxUSE_GLOBAL_MEMORY_OPERATORS && wxUSE_DEBUG_NEW_ALWAYS
 116 #  define new new(__TFILE__,__LINE__)
 117 #  endif
 118
 119 #endif
 120   // __VISUALC__
 121 /// END for console support
 122
 123 // ----------------------------------------------------------------------------
 124 // constants
 125 // ----------------------------------------------------------------------------
 126
 127 // In the WIN.INI file
 128 static const wxChar WX_SECTION[] = wxT("wxWindows");
 129 static const wxChar eUSERNAME[]  = wxT("UserName");
 130
 131 // these are only used under Win16
 132 #if !defined(__WIN32__) && !defined(__WXMICROWIN__)
 133 static const wxChar eHOSTNAME[]  = wxT("HostName");
 134 static const wxChar eUSERID[]    = wxT("UserId");
 135 #endif // !Win32
 136
 137 #ifndef __WXMICROWIN__
 138
 139 // ============================================================================
 140 // implementation
 141 // ============================================================================
 142
 143 // ----------------------------------------------------------------------------
 144 // get host name and related
 145 // ----------------------------------------------------------------------------
 146
 147 // Get hostname only (without domain name)
 148 bool wxGetHostName(wxChar *buf, int maxSize)
 149 {
 150 #if defined(__WIN32__) && !defined(__TWIN32__) && !defined(__WXMICROWIN__)
 151     DWORD nSize = maxSize;
 152     if ( !::GetComputerName(buf, &nSize) )
 153     {
 154         wxLogLastError(wxT("GetComputerName"));
 155
 156         return FALSE;
 157     }
 158
 159     return TRUE;
 160 #else
 161     wxChar *sysname;
 162     const wxChar *default_host = wxT("noname");
 163
 164     if ((sysname = wxGetenv(wxT("SYSTEM_NAME"))) == NULL) {
 165         GetProfileString(WX_SECTION, eHOSTNAME, default_host, buf, maxSize - 1);
 166     } else
 167         wxStrncpy(buf, sysname, maxSize - 1);
 168     buf[maxSize] = wxT('\0');
 169     return *buf ? TRUE : FALSE;
 170 #endif
 171 }
 172
 173 // get full hostname (with domain name if possible)
 174 bool wxGetFullHostName(wxChar *buf, int maxSize)
 175 {
 176 #if defined(__WIN32__) && !defined(__TWIN32__) && !defined(__WXMICROWIN__) && ! (defined(__GNUWIN32__) && !defined(__MINGW32__))
 177     // TODO should use GetComputerNameEx() when available
 178
 179     // the idea is that if someone had set wxUSE_SOCKETS to 0 the code
 180     // shouldn't use winsock.dll (a.k.a. ws2_32.dll) at all so only use this
 181     // code if we link with it anyhow
 182 #if wxUSE_SOCKETS
 183     //FIXME __DIGITALMARS__ why is using sockets not properly turned off in setup.h ??
 184     // find which library should contain sockets for Digital Mars CE April 2003
 185 #ifndef __DIGITALMARS__
 186     WSADATA wsa;
 187     if ( WSAStartup(MAKEWORD(1, 1), &wsa) == 0 )
 188     {
 189         wxString host;
 190         char bufA[256];
 191         if ( gethostname(bufA, WXSIZEOF(bufA)) == 0 )
 192         {
 193             // gethostname() won't usually include the DNS domain name, for
 194             // this we need to work a bit more
 195             if ( !strchr(bufA, '.') )
 196             {
 197                 struct hostent *pHostEnt =  gethostbyname(bufA);
 198
 199                 if ( pHostEnt )
 200                 {
 201                     // Windows will use DNS internally now
 202                     pHostEnt = gethostbyaddr(pHostEnt->h_addr, 4, AF_INET);
 203                 }
 204
 205                 if ( pHostEnt )
 206                 {
 207                     host = wxString::FromAscii(pHostEnt->h_name);
 208                 }
 209             }
 210         }
 211
 212         WSACleanup();
 213
 214         if ( !host.empty() )
 215         {
 216             wxStrncpy(buf, host, maxSize);
 217
 218             return TRUE;
 219         }
 220     }
 221 #endif //__DIGITALMARS__
 222
 223 #endif // wxUSE_SOCKETS
 224
 225 #endif // Win32
 226
 227     return wxGetHostName(buf, maxSize);
 228 }
 229
 230 // Get user ID e.g. jacs
 231 bool wxGetUserId(wxChar *buf, int maxSize)
 232 {
 233 #if defined(__WIN32__) && !defined(__win32s__) && !defined(__TWIN32__) && !defined(__WXMICROWIN__)
 234     DWORD nSize = maxSize;
 235     if ( ::GetUserName(buf, &nSize) == 0 )
 236     {
 237         // actually, it does happen on Win9x if the user didn't log on
 238         DWORD res = ::GetEnvironmentVariable(wxT("username"), buf, maxSize);
 239         if ( res == 0 )
 240         {
 241             // not found
 242             return FALSE;
 243         }
 244     }
 245
 246     return TRUE;
 247 #else   // Win16 or Win32s
 248     wxChar *user;
 249     const wxChar *default_id = wxT("anonymous");
 250
 251     // Can't assume we have NIS (PC-NFS) or some other ID daemon
 252     // So we ...
 253     if (  (user = wxGetenv(wxT("USER"))) == NULL &&
 254             (user = wxGetenv(wxT("LOGNAME"))) == NULL )
 255     {
 256         // Use wxWindows configuration data (comming soon)
 257         GetProfileString(WX_SECTION, eUSERID, default_id, buf, maxSize - 1);
 258     }
 259     else
 260     {
 261         wxStrncpy(buf, user, maxSize - 1);
 262     }
 263
 264     return *buf ? TRUE : FALSE;
 265 #endif
 266 }
 267
 268 // Get user name e.g. Julian Smart
 269 bool wxGetUserName(wxChar *buf, int maxSize)
 270 {
 271 #if wxUSE_PENWINDOWS && !defined(__WATCOMC__) && !defined(__GNUWIN32__)
 272     extern HANDLE g_hPenWin; // PenWindows Running?
 273     if (g_hPenWin)
 274     {
 275         // PenWindows Does have a user concept!
 276         // Get the current owner of the recognizer
 277         GetPrivateProfileString("Current", "User", default_name, wxBuffer, maxSize - 1, "PENWIN.INI");
 278         strncpy(buf, wxBuffer, maxSize - 1);
 279     }
 280     else
 281 #endif
 282     {
 283 #ifdef USE_NET_API
 284         CHAR szUserName[256];
 285         if ( !wxGetUserId(szUserName, WXSIZEOF(szUserName)) )
 286             return FALSE;
 287
 288         // TODO how to get the domain name?
 289         CHAR *szDomain = "";
 290
 291         // the code is based on the MSDN example (also see KB article Q119670)
 292         WCHAR wszUserName[256];          // Unicode user name
 293         WCHAR wszDomain[256];
 294         LPBYTE ComputerName;
 295
 296         USER_INFO_2 *ui2;         // User structure
 297
 298         // Convert ANSI user name and domain to Unicode
 299         MultiByteToWideChar( CP_ACP, 0, szUserName, strlen(szUserName)+1,
 300                 wszUserName, WXSIZEOF(wszUserName) );
 301         MultiByteToWideChar( CP_ACP, 0, szDomain, strlen(szDomain)+1,
 302                 wszDomain, WXSIZEOF(wszDomain) );
 303
 304         // Get the computer name of a DC for the domain.
 305         if ( NetGetDCName( NULL, wszDomain, &ComputerName ) != NERR_Success )
 306         {
 307             wxLogError(wxT("Can not find domain controller"));
 308
 309             goto error;
 310         }
 311
 312         // Look up the user on the DC
 313         NET_API_STATUS status = NetUserGetInfo( (LPWSTR)ComputerName,
 314                 (LPWSTR)&wszUserName,
 315                 2, // level - we want USER_INFO_2
 316                 (LPBYTE *) &ui2 );
 317         switch ( status )
 318         {
 319             case NERR_Success:
 320                 // ok
 321                 break;
 322
 323             case NERR_InvalidComputer:
 324                 wxLogError(wxT("Invalid domain controller name."));
 325
 326                 goto error;
 327
 328             case NERR_UserNotFound:
 329                 wxLogError(wxT("Invalid user name '%s'."), szUserName);
 330
 331                 goto error;
 332
 333             default:
 334                 wxLogSysError(wxT("Can't get information about user"));
 335
 336                 goto error;
 337         }
 338
 339         // Convert the Unicode full name to ANSI
 340         WideCharToMultiByte( CP_ACP, 0, ui2->usri2_full_name, -1,
 341                 buf, maxSize, NULL, NULL );
 342
 343         return TRUE;
 344
 345 error:
 346         wxLogError(wxT("Couldn't look up full user name."));
 347
 348         return FALSE;
 349 #else  // !USE_NET_API
 350         // Could use NIS, MS-Mail or other site specific programs
 351         // Use wxWindows configuration data
 352         bool ok = GetProfileString(WX_SECTION, eUSERNAME, wxT(""), buf, maxSize - 1) != 0;
 353         if ( !ok )
 354         {
 355             ok = wxGetUserId(buf, maxSize);
 356         }
 357
 358         if ( !ok )
 359         {
 360             wxStrncpy(buf, wxT("Unknown User"), maxSize);
 361         }
 362 #endif // Win32/16
 363     }
 364
 365     return TRUE;
 366 }
 367
 368 const wxChar* wxGetHomeDir(wxString *pstr)
 369 {
 370   wxString& strDir = *pstr;
 371
 372   #if defined(__UNIX__) && !defined(__TWIN32__)
 373     const wxChar *szHome = wxGetenv("HOME");
 374     if ( szHome == NULL ) {
 375       // we're homeless...
 376       wxLogWarning(_("can't find user's HOME, using current directory."));
 377       strDir = wxT(".");
 378     }
 379     else
 380        strDir = szHome;
 381
 382     // add a trailing slash if needed
 383     if ( strDir.Last() != wxT('/') )
 384       strDir << wxT('/');
 385
 386     #ifdef __CYGWIN__
 387       // Cygwin returns unix type path but that does not work well
 388       static wxChar windowsPath[MAX_PATH];
 389       cygwin_conv_to_full_win32_path(strDir, windowsPath);
 390       strDir = windowsPath;
 391     #endif
 392   #else   // Windows
 393     #ifdef  __WIN32__
 394       strDir.clear();
 395
 396       // If we have a valid HOME directory, as is used on many machines that
 397       // have unix utilities on them, we should use that.
 398       const wxChar *szHome = wxGetenv(wxT("HOME"));
 399
 400       if ( szHome != NULL )
 401       {
 402         strDir = szHome;
 403       }
 404       else // no HOME, try HOMEDRIVE/PATH
 405       {
 406           szHome = wxGetenv(wxT("HOMEDRIVE"));
 407           if ( szHome != NULL )
 408             strDir << szHome;
 409           szHome = wxGetenv(wxT("HOMEPATH"));
 410
 411           if ( szHome != NULL )
 412           {
 413             strDir << szHome;
 414
 415             // the idea is that under NT these variables have default values
 416             // of "%systemdrive%:" and "\\". As we don't want to create our
 417             // config files in the root directory of the system drive, we will
 418             // create it in our program's dir. However, if the user took care
 419             // to set HOMEPATH to something other than "\\", we suppose that he
 420             // knows what he is doing and use the supplied value.
 421             if ( wxStrcmp(szHome, wxT("\\")) == 0 )
 422               strDir.clear();
 423           }
 424       }
 425
 426       if ( strDir.empty() )
 427       {
 428           // If we have a valid USERPROFILE directory, as is the case in
 429           // Windows NT, 2000 and XP, we should use that as our home directory.
 430           szHome = wxGetenv(wxT("USERPROFILE"));
 431
 432           if ( szHome != NULL )
 433             strDir = szHome;
 434       }
 435
 436       if ( !strDir.empty() )
 437       {
 438           return strDir.c_str();
 439       }
 440       //else: fall back to the prograrm directory
 441     #else   // Win16
 442       // Win16 has no idea about home, so use the executable directory instead
 443     #endif  // WIN16/32
 444
 445     // 260 was taken from windef.h
 446     #ifndef MAX_PATH
 447       #define MAX_PATH  260
 448     #endif
 449
 450     wxString strPath;
 451     ::GetModuleFileName(::GetModuleHandle(NULL),
 452                         strPath.GetWriteBuf(MAX_PATH), MAX_PATH);
 453     strPath.UngetWriteBuf();
 454
 455     // extract the dir name
 456     wxSplitPath(strPath, &strDir, NULL, NULL);
 457
 458   #endif  // UNIX/Win
 459
 460   return strDir.c_str();
 461 }
 462
 463 wxChar *wxGetUserHome(const wxString& WXUNUSED(user))
 464 {
 465     // VZ: the old code here never worked for user != "" anyhow! Moreover, it
 466     //     returned sometimes a malloc()'d pointer, sometimes a pointer to a
 467     //     static buffer and sometimes I don't even know what.
 468     static wxString s_home;
 469
 470     return (wxChar *)wxGetHomeDir(&s_home);
 471 }
 472
 473 bool wxDirExists(const wxString& dir)
 474 {
 475 #ifdef __WXMICROWIN__
 476     return wxPathExist(dir);
 477 #elif defined(__WIN32__)
 478     DWORD attribs = GetFileAttributes(dir);
 479     return ((attribs != (DWORD)-1) && (attribs & FILE_ATTRIBUTE_DIRECTORY));
 480 #else // Win16
 481     #ifdef __BORLANDC__
 482         struct ffblk fileInfo;
 483     #else
 484         struct find_t fileInfo;
 485     #endif
 486     // In Borland findfirst has a different argument
 487     // ordering from _dos_findfirst. But _dos_findfirst
 488     // _should_ be ok in both MS and Borland... why not?
 489     #ifdef __BORLANDC__
 490         return (findfirst(dir, &fileInfo, _A_SUBDIR) == 0 &&
 491                (fileInfo.ff_attrib & _A_SUBDIR) != 0);
 492     #else
 493         return (_dos_findfirst(dir, _A_SUBDIR, &fileInfo) == 0) &&
 494                ((fileInfo.attrib & _A_SUBDIR) != 0);
 495     #endif
 496 #endif // Win32/16
 497 }
 498
 499 bool wxGetDiskSpace(const wxString& path, wxLongLong *pTotal, wxLongLong *pFree)
 500 {
 501     if ( path.empty() )
 502         return FALSE;
 503
 504 // old w32api don't have ULARGE_INTEGER
 505 #if defined(__WIN32__) && \
 506     (!defined(__GNUWIN32__) || wxCHECK_W32API_VERSION( 0, 3 ))
 507     // GetDiskFreeSpaceEx() is not available under original Win95, check for
 508     // it
 509     typedef BOOL (WINAPI *GetDiskFreeSpaceEx_t)(LPCTSTR,
 510                                                 PULARGE_INTEGER,
 511                                                 PULARGE_INTEGER,
 512                                                 PULARGE_INTEGER);
 513
 514     GetDiskFreeSpaceEx_t
 515         pGetDiskFreeSpaceEx = (GetDiskFreeSpaceEx_t)::GetProcAddress
 516                               (
 517                                 ::GetModuleHandle(_T("kernel32.dll")),
 518 #if wxUSE_UNICODE
 519                                 "GetDiskFreeSpaceExW"
 520 #else
 521                                 "GetDiskFreeSpaceExA"
 522 #endif
 523                               );
 524
 525     if ( pGetDiskFreeSpaceEx )
 526     {
 527         ULARGE_INTEGER bytesFree, bytesTotal;
 528
 529         // may pass the path as is, GetDiskFreeSpaceEx() is smart enough
 530         if ( !pGetDiskFreeSpaceEx(path,
 531                                   &bytesFree,
 532                                   &bytesTotal,
 533                                   NULL) )
 534         {
 535             wxLogLastError(_T("GetDiskFreeSpaceEx"));
 536
 537             return FALSE;
 538         }
 539
 540         // ULARGE_INTEGER is a union of a 64 bit value and a struct containing
 541         // two 32 bit fields which may be or may be not named - try to make it
 542         // compile in all cases
 543 #if defined(__BORLANDC__) && !defined(_ANONYMOUS_STRUCT)
 544         #define UL(ul) ul.u
 545 #else // anon union
 546         #define UL(ul) ul
 547 #endif
 548         if ( pTotal )
 549         {
 550             *pTotal = wxLongLong(UL(bytesTotal).HighPart, UL(bytesTotal).LowPart);
 551         }
 552
 553         if ( pFree )
 554         {
 555             *pFree = wxLongLong(UL(bytesFree).HighPart, UL(bytesFree).LowPart);
 556         }
 557     }
 558     else
 559 #endif // Win32
 560     {
 561         // there's a problem with drives larger than 2GB, GetDiskFreeSpaceEx()
 562         // should be used instead - but if it's not available, fall back on
 563         // GetDiskFreeSpace() nevertheless...
 564
 565         DWORD lSectorsPerCluster,
 566               lBytesPerSector,
 567               lNumberOfFreeClusters,
 568               lTotalNumberOfClusters;
 569
 570         // FIXME: this is wrong, we should extract the root drive from path
 571         //        instead, but this is the job for wxFileName...
 572         if ( !::GetDiskFreeSpace(path,
 573                                  &lSectorsPerCluster,
 574                                  &lBytesPerSector,
 575                                  &lNumberOfFreeClusters,
 576                                  &lTotalNumberOfClusters) )
 577         {
 578             wxLogLastError(_T("GetDiskFreeSpace"));
 579
 580             return FALSE;
 581         }
 582
 583         wxLongLong lBytesPerCluster = lSectorsPerCluster;
 584         lBytesPerCluster *= lBytesPerSector;
 585
 586         if ( pTotal )
 587         {
 588             *pTotal = lBytesPerCluster;
 589             *pTotal *= lTotalNumberOfClusters;
 590         }
 591
 592         if ( pFree )
 593         {
 594             *pFree = lBytesPerCluster;
 595             *pFree *= lNumberOfFreeClusters;
 596         }
 597     }
 598
 599     return TRUE;
 600 }
 601
 602 // ----------------------------------------------------------------------------
 603 // env vars
 604 // ----------------------------------------------------------------------------
 605
 606 bool wxGetEnv(const wxString& var, wxString *value)
 607 {
 608 #ifdef __WIN16__
 609     const wxChar* ret = wxGetenv(var);
 610     if ( !ret )
 611         return FALSE;
 612
 613     if ( value )
 614     {
 615         *value = ret;
 616     }
 617
 618     return TRUE;
 619 #else // Win32
 620     // first get the size of the buffer
 621     DWORD dwRet = ::GetEnvironmentVariable(var, NULL, 0);
 622     if ( !dwRet )
 623     {
 624         // this means that there is no such variable
 625         return FALSE;
 626     }
 627
 628     if ( value )
 629     {
 630         (void)::GetEnvironmentVariable(var, value->GetWriteBuf(dwRet), dwRet);
 631         value->UngetWriteBuf();
 632     }
 633
 634     return TRUE;
 635 #endif // Win16/32
 636 }
 637
 638 bool wxSetEnv(const wxString& var, const wxChar *value)
 639 {
 640     // some compilers have putenv() or _putenv() or _wputenv() but it's better
 641     // to always use Win32 function directly instead of dealing with them
 642 #if defined(__WIN32__)
 643     if ( !::SetEnvironmentVariable(var, value) )
 644     {
 645         wxLogLastError(_T("SetEnvironmentVariable"));
 646
 647         return FALSE;
 648     }
 649
 650     return TRUE;
 651 #else // no way to set env vars
 652     return FALSE;
 653 #endif
 654 }
 655
 656 // ----------------------------------------------------------------------------
 657 // process management
 658 // ----------------------------------------------------------------------------
 659
 660 // structure used to pass parameters from wxKill() to wxEnumFindByPidProc()
 661 struct wxFindByPidParams
 662 {
 663     wxFindByPidParams() { hwnd = 0; pid = 0; }
 664
 665     // the HWND used to return the result
 666     HWND hwnd;
 667
 668     // the PID we're looking from
 669     DWORD pid;
 670
 671     DECLARE_NO_COPY_CLASS(wxFindByPidParams)
 672 };
 673
 674 // wxKill helper: EnumWindows() callback which is used to find the first (top
 675 // level) window belonging to the given process
 676 BOOL CALLBACK wxEnumFindByPidProc(HWND hwnd, LPARAM lParam)
 677 {
 678     DWORD pid;
 679     (void)::GetWindowThreadProcessId(hwnd, &pid);
 680
 681     wxFindByPidParams *params = (wxFindByPidParams *)lParam;
 682     if ( pid == params->pid )
 683     {
 684         // remember the window we found
 685         params->hwnd = hwnd;
 686
 687         // return FALSE to stop the enumeration
 688         return FALSE;
 689     }
 690
 691     // continue enumeration
 692     return TRUE;
 693 }
 694
 695 int wxKill(long pid, wxSignal sig, wxKillError *krc)
 696 {
 697     // get the process handle to operate on
 698     HANDLE hProcess = ::OpenProcess(SYNCHRONIZE |
 699                                     PROCESS_TERMINATE |
 700                                     PROCESS_QUERY_INFORMATION,
 701                                     FALSE, // not inheritable
 702                                     (DWORD)pid);
 703     if ( hProcess == NULL )
 704     {
 705         if ( krc )
 706         {
 707             if ( ::GetLastError() == ERROR_ACCESS_DENIED )
 708             {
 709                 *krc = wxKILL_ACCESS_DENIED;
 710             }
 711             else
 712             {
 713                 *krc = wxKILL_NO_PROCESS;
 714             }
 715         }
 716
 717         return -1;
 718     }
 719
 720     bool ok = TRUE;
 721     switch ( sig )
 722     {
 723         case wxSIGKILL:
 724             // kill the process forcefully returning -1 as error code
 725             if ( !::TerminateProcess(hProcess, (UINT)-1) )
 726             {
 727                 wxLogSysError(_("Failed to kill process %d"), pid);
 728
 729                 if ( krc )
 730                 {
 731                     // this is not supposed to happen if we could open the
 732                     // process
 733                     *krc = wxKILL_ERROR;
 734                 }
 735
 736                 ok = FALSE;
 737             }
 738             break;
 739
 740         case wxSIGNONE:
 741             // do nothing, we just want to test for process existence
 742             break;
 743
 744         default:
 745             // any other signal means "terminate"
 746             {
 747                 wxFindByPidParams params;
 748                 params.pid = (DWORD)pid;
 749
 750                 // EnumWindows() has nice semantics: it returns 0 if it found
 751                 // something or if an error occured and non zero if it
 752                 // enumerated all the window
 753                 if ( !::EnumWindows(wxEnumFindByPidProc, (LPARAM)&params) )
 754                 {
 755                     // did we find any window?
 756                     if ( params.hwnd )
 757                     {
 758                         // tell the app to close
 759                         //
 760                         // NB: this is the harshest way, the app won't have
 761                         //     opportunity to save any files, for example, but
 762                         //     this is probably what we want here. If not we
 763                         //     can also use SendMesageTimeout(WM_CLOSE)
 764                         if ( !::PostMessage(params.hwnd, WM_QUIT, 0, 0) )
 765                         {
 766                             wxLogLastError(_T("PostMessage(WM_QUIT)"));
 767                         }
 768                     }
 769                     else // it was an error then
 770                     {
 771                         wxLogLastError(_T("EnumWindows"));
 772
 773                         ok = FALSE;
 774                     }
 775                 }
 776                 else // no windows for this PID
 777                 {
 778                     if ( krc )
 779                     {
 780                         *krc = wxKILL_ERROR;
 781                     }
 782
 783                     ok = FALSE;
 784                 }
 785             }
 786     }
 787
 788     // the return code
 789     DWORD rc;
 790
 791     if ( ok )
 792     {
 793         // as we wait for a short time, we can use just WaitForSingleObject()
 794         // and not MsgWaitForMultipleObjects()
 795         switch ( ::WaitForSingleObject(hProcess, 500 /* msec */) )
 796         {
 797             case WAIT_OBJECT_0:
 798                 // process terminated
 799                 if ( !::GetExitCodeProcess(hProcess, &rc) )
 800                 {
 801                     wxLogLastError(_T("GetExitCodeProcess"));
 802                 }
 803                 break;
 804
 805             default:
 806                 wxFAIL_MSG( _T("unexpected WaitForSingleObject() return") );
 807                 // fall through
 808
 809             case WAIT_FAILED:
 810                 wxLogLastError(_T("WaitForSingleObject"));
 811                 // fall through
 812
 813             case WAIT_TIMEOUT:
 814                 if ( krc )
 815                 {
 816                     *krc = wxKILL_ERROR;
 817                 }
 818
 819                 rc = STILL_ACTIVE;
 820                 break;
 821         }
 822     }
 823     else // !ok
 824     {
 825         // just to suppress the warnings about uninitialized variable
 826         rc = 0;
 827     }
 828
 829     ::CloseHandle(hProcess);
 830
 831     // the return code is the same as from Unix kill(): 0 if killed
 832     // successfully or -1 on error
 833     //
 834     // be careful to interpret rc correctly: for wxSIGNONE we return success if
 835     // the process exists, for all the other sig values -- if it doesn't
 836     if ( ok &&
 837             ((sig == wxSIGNONE) == (rc == STILL_ACTIVE)) )
 838     {
 839         if ( krc )
 840         {
 841             *krc = wxKILL_OK;
 842         }
 843
 844         return 0;
 845     }
 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         if ( bOK )
 887         {
 888             TOKEN_PRIVILEGES tkp;
 889
 890             // Get the LUID for the shutdown privilege.
 891             ::LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,
 892                                    &tkp.Privileges[0].Luid);
 893
 894             tkp.PrivilegeCount = 1;  // one privilege to set
 895             tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
 896
 897             // Get the shutdown privilege for this process.
 898             ::AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,
 899                                     (PTOKEN_PRIVILEGES)NULL, 0);
 900
 901             // Cannot test the return value of AdjustTokenPrivileges.
 902             bOK = ::GetLastError() == ERROR_SUCCESS;
 903         }
 904     }
 905
 906     if ( bOK )
 907     {
 908         UINT flags = EWX_SHUTDOWN | EWX_FORCE;
 909         switch ( wFlags )
 910         {
 911             case wxSHUTDOWN_POWEROFF:
 912                 flags |= EWX_POWEROFF;
 913                 break;
 914
 915             case wxSHUTDOWN_REBOOT:
 916                 flags |= EWX_REBOOT;
 917                 break;
 918
 919             default:
 920                 wxFAIL_MSG( _T("unknown wxShutdown() flag") );
 921                 return FALSE;
 922         }
 923
 924         bOK = ::ExitWindowsEx(EWX_SHUTDOWN | EWX_FORCE | EWX_REBOOT, 0) != 0;
 925     }
 926
 927     return bOK;
 928 #else // Win16
 929     return FALSE;
 930 #endif // Win32/16
 931 }
 932
 933 // ----------------------------------------------------------------------------
 934 // misc
 935 // ----------------------------------------------------------------------------
 936
 937 // Get free memory in bytes, or -1 if cannot determine amount (e.g. on UNIX)
 938 long wxGetFreeMemory()
 939 {
 940 #if defined(__WIN32__) && !defined(__BORLANDC__) && !defined(__TWIN32__)
 941     MEMORYSTATUS memStatus;
 942     memStatus.dwLength = sizeof(MEMORYSTATUS);
 943     GlobalMemoryStatus(&memStatus);
 944     return memStatus.dwAvailPhys;
 945 #else
 946     return (long)GetFreeSpace(0);
 947 #endif
 948 }
 949
 950 unsigned long wxGetProcessId()
 951 {
 952 #ifdef __WIN32__
 953     return ::GetCurrentProcessId();
 954 #else
 955     return 0;
 956 #endif
 957 }
 958
 959 // Emit a beeeeeep
 960 void wxBell()
 961 {
 962     ::MessageBeep((UINT)-1);        // default sound
 963 }
 964
 965 wxString wxGetOsDescription()
 966 {
 967 #ifdef __WIN32__
 968     wxString str;
 969
 970     OSVERSIONINFO info;
 971     wxZeroMemory(info);
 972
 973     info.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
 974     if ( ::GetVersionEx(&info) )
 975     {
 976         switch ( info.dwPlatformId )
 977         {
 978             case VER_PLATFORM_WIN32s:
 979                 str = _("Win32s on Windows 3.1");
 980                 break;
 981
 982             case VER_PLATFORM_WIN32_WINDOWS:
 983                 str.Printf(_("Windows 9%c"),
 984                            info.dwMinorVersion == 0 ? _T('5') : _T('8'));
 985                 if ( !wxIsEmpty(info.szCSDVersion) )
 986                 {
 987                     str << _T(" (") << info.szCSDVersion << _T(')');
 988                 }
 989                 break;
 990
 991             case VER_PLATFORM_WIN32_NT:
 992                 str.Printf(_T("Windows NT %lu.%lu (build %lu"),
 993                            info.dwMajorVersion,
 994                            info.dwMinorVersion,
 995                            info.dwBuildNumber);
 996                 if ( !wxIsEmpty(info.szCSDVersion) )
 997                 {
 998                     str << _T(", ") << info.szCSDVersion;
 999                 }
1000                 str << _T(')');
1001                 break;
1002         }
1003     }
1004     else
1005     {
1006         wxFAIL_MSG( _T("GetVersionEx() failed") ); // should never happen
1007     }
1008
1009     return str;
1010 #else // Win16
1011     return _("Windows 3.1");
1012 #endif // Win32/16
1013 }
1014
1015 int wxGetOsVersion(int *majorVsn, int *minorVsn)
1016 {
1017 #if defined(__WIN32__)
1018     static int ver = -1, major = -1, minor = -1;
1019
1020     if ( ver == -1 )
1021     {
1022         OSVERSIONINFO info;
1023         wxZeroMemory(info);
1024
1025         ver = wxWINDOWS;
1026         info.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
1027         if ( ::GetVersionEx(&info) )
1028         {
1029             major = info.dwMajorVersion;
1030             minor = info.dwMinorVersion;
1031
1032             switch ( info.dwPlatformId )
1033             {
1034                 case VER_PLATFORM_WIN32s:
1035                     ver = wxWIN32S;
1036                     break;
1037
1038                 case VER_PLATFORM_WIN32_WINDOWS:
1039                     ver = wxWIN95;
1040                     break;
1041
1042                 case VER_PLATFORM_WIN32_NT:
1043                     ver = wxWINDOWS_NT;
1044                     break;
1045             }
1046         }
1047     }
1048
1049     if (majorVsn && major != -1)
1050         *majorVsn = major;
1051     if (minorVsn && minor != -1)
1052         *minorVsn = minor;
1053
1054     return ver;
1055 #else // Win16
1056     int retValue = wxWINDOWS;
1057     #ifdef __WINDOWS_386__
1058         retValue = wxWIN386;
1059     #else
1060         #if !defined(__WATCOMC__) && !defined(GNUWIN32) && wxUSE_PENWINDOWS
1061             extern HANDLE g_hPenWin;
1062             retValue = g_hPenWin ? wxPENWINDOWS : wxWINDOWS;
1063         #endif
1064     #endif
1065
1066     if (majorVsn)
1067         *majorVsn = 3;
1068     if (minorVsn)
1069         *minorVsn = 1;
1070
1071     return retValue;
1072 #endif
1073 }
1074
1075 // ----------------------------------------------------------------------------
1076 // sleep functions
1077 // ----------------------------------------------------------------------------
1078
1079 #if wxUSE_GUI
1080
1081 #if wxUSE_TIMER
1082
1083 // Sleep for nSecs seconds. Attempt a Windows implementation using timers.
1084 static bool gs_inTimer = FALSE;
1085
1086 class wxSleepTimer : public wxTimer
1087 {
1088 public:
1089     virtual void Notify()
1090     {
1091         gs_inTimer = FALSE;
1092         Stop();
1093     }
1094 };
1095
1096 static wxTimer *wxTheSleepTimer = NULL;
1097
1098 void wxUsleep(unsigned long milliseconds)
1099 {
1100 #ifdef __WIN32__
1101     ::Sleep(milliseconds);
1102 #else // !Win32
1103     if (gs_inTimer)
1104         return;
1105     if (miliseconds <= 0)
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     if (nSecs <= 0)
1126          return;
1127
1128     wxTheSleepTimer = new wxSleepTimer;
1129     gs_inTimer = TRUE;
1130     wxTheSleepTimer->Start(nSecs*1000);
1131     while (gs_inTimer)
1132     {
1133         if (wxTheApp->Pending())
1134             wxTheApp->Dispatch();
1135     }
1136     delete wxTheSleepTimer;
1137     wxTheSleepTimer = NULL;
1138 }
1139
1140 // Consume all events until no more left
1141 void wxFlushEvents()
1142 {
1143 //  wxYield();
1144 }
1145
1146 #endif // wxUSE_TIMER
1147
1148 #elif defined(__WIN32__) // wxUSE_GUI
1149
1150 void wxUsleep(unsigned long milliseconds)
1151 {
1152     ::Sleep(milliseconds);
1153 }
1154
1155 void wxSleep(int nSecs)
1156 {
1157     wxUsleep(1000*nSecs);
1158 }
1159
1160 #endif // wxUSE_GUI/!wxUSE_GUI
1161 #endif // __WXMICROWIN__
1162
1163 // ----------------------------------------------------------------------------
1164 // deprecated (in favour of wxLog) log functions
1165 // ----------------------------------------------------------------------------
1166
1167 #if WXWIN_COMPATIBILITY_2_2
1168
1169 // Output a debug mess., in a system dependent fashion.
1170 #ifndef __WXMICROWIN__
1171 void wxDebugMsg(const wxChar *fmt ...)
1172 {
1173   va_list ap;
1174   static wxChar buffer[512];
1175
1176   if (!wxTheApp->GetWantDebugOutput())
1177     return;
1178
1179   va_start(ap, fmt);
1180
1181   wvsprintf(buffer,fmt,ap);
1182   OutputDebugString((LPCTSTR)buffer);
1183
1184   va_end(ap);
1185 }
1186
1187 // Non-fatal error: pop up message box and (possibly) continue
1188 void wxError(const wxString& msg, const wxString& title)
1189 {
1190   wxSprintf(wxBuffer, wxT("%s\nContinue?"), WXSTRINGCAST msg);
1191   if (MessageBox(NULL, (LPCTSTR)wxBuffer, (LPCTSTR)WXSTRINGCAST title,
1192              MB_ICONSTOP | MB_YESNO) == IDNO)
1193     wxExit();
1194 }
1195
1196 // Fatal error: pop up message box and abort
1197 void wxFatalError(const wxString& msg, const wxString& title)
1198 {
1199   wxSprintf(wxBuffer, wxT("%s: %s"), WXSTRINGCAST title, WXSTRINGCAST msg);
1200   FatalAppExit(0, (LPCTSTR)wxBuffer);
1201 }
1202 #endif // __WXMICROWIN__
1203
1204 #endif // WXWIN_COMPATIBILITY_2_2
1205
1206 #if wxUSE_GUI
1207
1208 // ----------------------------------------------------------------------------
1209 // functions to work with .INI files
1210 // ----------------------------------------------------------------------------
1211
1212 // Reading and writing resources (eg WIN.INI, .Xdefaults)
1213 #if wxUSE_RESOURCES
1214 bool wxWriteResource(const wxString& section, const wxString& entry, const wxString& value, const wxString& file)
1215 {
1216   if (file != wxT(""))
1217 // Don't know what the correct cast should be, but it doesn't
1218 // compile in BC++/16-bit without this cast.
1219 #if !defined(__WIN32__)
1220     return (WritePrivateProfileString((const char*) section, (const char*) entry, (const char*) value, (const char*) file) != 0);
1221 #else
1222     return (WritePrivateProfileString((LPCTSTR)WXSTRINGCAST section, (LPCTSTR)WXSTRINGCAST entry, (LPCTSTR)value, (LPCTSTR)WXSTRINGCAST file) != 0);
1223 #endif
1224   else
1225     return (WriteProfileString((LPCTSTR)WXSTRINGCAST section, (LPCTSTR)WXSTRINGCAST entry, (LPCTSTR)WXSTRINGCAST value) != 0);
1226 }
1227
1228 bool wxWriteResource(const wxString& section, const wxString& entry, float value, const wxString& file)
1229 {
1230     wxString buf;
1231     buf.Printf(wxT("%.4f"), value);
1232
1233     return wxWriteResource(section, entry, buf, file);
1234 }
1235
1236 bool wxWriteResource(const wxString& section, const wxString& entry, long value, const wxString& file)
1237 {
1238     wxString buf;
1239     buf.Printf(wxT("%ld"), value);
1240
1241     return wxWriteResource(section, entry, buf, file);
1242 }
1243
1244 bool wxWriteResource(const wxString& section, const wxString& entry, int value, const wxString& file)
1245 {
1246     wxString buf;
1247     buf.Printf(wxT("%d"), value);
1248
1249     return wxWriteResource(section, entry, buf, file);
1250 }
1251
1252 bool wxGetResource(const wxString& section, const wxString& entry, wxChar **value, const wxString& file)
1253 {
1254     static const wxChar defunkt[] = wxT("$$default");
1255     if (file != wxT(""))
1256     {
1257         int n = GetPrivateProfileString((LPCTSTR)WXSTRINGCAST section, (LPCTSTR)WXSTRINGCAST entry, (LPCTSTR)defunkt,
1258                 (LPTSTR)wxBuffer, 1000, (LPCTSTR)WXSTRINGCAST file);
1259         if (n == 0 || wxStrcmp(wxBuffer, defunkt) == 0)
1260             return FALSE;
1261     }
1262     else
1263     {
1264         int n = GetProfileString((LPCTSTR)WXSTRINGCAST section, (LPCTSTR)WXSTRINGCAST entry, (LPCTSTR)defunkt,
1265                 (LPTSTR)wxBuffer, 1000);
1266         if (n == 0 || wxStrcmp(wxBuffer, defunkt) == 0)
1267             return FALSE;
1268     }
1269     if (*value) delete[] (*value);
1270     *value = copystring(wxBuffer);
1271     return TRUE;
1272 }
1273
1274 bool wxGetResource(const wxString& section, const wxString& entry, float *value, const wxString& file)
1275 {
1276     wxChar *s = NULL;
1277     bool succ = wxGetResource(section, entry, (wxChar **)&s, file);
1278     if (succ)
1279     {
1280         *value = (float)wxStrtod(s, NULL);
1281         delete[] s;
1282         return TRUE;
1283     }
1284     else return FALSE;
1285 }
1286
1287 bool wxGetResource(const wxString& section, const wxString& entry, long *value, const wxString& file)
1288 {
1289     wxChar *s = NULL;
1290     bool succ = wxGetResource(section, entry, (wxChar **)&s, file);
1291     if (succ)
1292     {
1293         *value = wxStrtol(s, NULL, 10);
1294         delete[] s;
1295         return TRUE;
1296     }
1297     else return FALSE;
1298 }
1299
1300 bool wxGetResource(const wxString& section, const wxString& entry, int *value, const wxString& file)
1301 {
1302     wxChar *s = NULL;
1303     bool succ = wxGetResource(section, entry, (wxChar **)&s, file);
1304     if (succ)
1305     {
1306         *value = (int)wxStrtol(s, NULL, 10);
1307         delete[] s;
1308         return TRUE;
1309     }
1310     else return FALSE;
1311 }
1312 #endif // wxUSE_RESOURCES
1313
1314 // ---------------------------------------------------------------------------
1315 // helper functions for showing a "busy" cursor
1316 // ---------------------------------------------------------------------------
1317
1318 static HCURSOR gs_wxBusyCursor = 0;     // new, busy cursor
1319 static HCURSOR gs_wxBusyCursorOld = 0;  // old cursor
1320 static int gs_wxBusyCursorCount = 0;
1321
1322 extern HCURSOR wxGetCurrentBusyCursor()
1323 {
1324     return gs_wxBusyCursor;
1325 }
1326
1327 // Set the cursor to the busy cursor for all windows
1328 void wxBeginBusyCursor(wxCursor *cursor)
1329 {
1330     if ( gs_wxBusyCursorCount++ == 0 )
1331     {
1332         gs_wxBusyCursor = (HCURSOR)cursor->GetHCURSOR();
1333 #ifndef __WXMICROWIN__
1334         gs_wxBusyCursorOld = ::SetCursor(gs_wxBusyCursor);
1335 #endif
1336     }
1337     //else: nothing to do, already set
1338 }
1339
1340 // Restore cursor to normal
1341 void wxEndBusyCursor()
1342 {
1343     wxCHECK_RET( gs_wxBusyCursorCount > 0,
1344                  wxT("no matching wxBeginBusyCursor() for wxEndBusyCursor()") );
1345
1346     if ( --gs_wxBusyCursorCount == 0 )
1347     {
1348 #ifndef __WXMICROWIN__
1349         ::SetCursor(gs_wxBusyCursorOld);
1350 #endif
1351         gs_wxBusyCursorOld = 0;
1352     }
1353 }
1354
1355 // TRUE if we're between the above two calls
1356 bool wxIsBusy()
1357 {
1358   return gs_wxBusyCursorCount > 0;
1359 }
1360
1361 // Check whether this window wants to process messages, e.g. Stop button
1362 // in long calculations.
1363 bool wxCheckForInterrupt(wxWindow *wnd)
1364 {
1365     wxCHECK( wnd, FALSE );
1366
1367     MSG msg;
1368     while ( ::PeekMessage(&msg, GetHwndOf(wnd), 0, 0, PM_REMOVE) )
1369     {
1370         ::TranslateMessage(&msg);
1371         ::DispatchMessage(&msg);
1372     }
1373
1374     return TRUE;
1375 }
1376
1377 // MSW only: get user-defined resource from the .res file.
1378 // Returns NULL or newly-allocated memory, so use delete[] to clean up.
1379
1380 #ifndef __WXMICROWIN__
1381 wxChar *wxLoadUserResource(const wxString& resourceName, const wxString& resourceType)
1382 {
1383     HRSRC hResource = ::FindResource(wxGetInstance(), resourceName, resourceType);
1384     if ( hResource == 0 )
1385         return NULL;
1386
1387     HGLOBAL hData = ::LoadResource(wxGetInstance(), hResource);
1388     if ( hData == 0 )
1389         return NULL;
1390
1391     wxChar *theText = (wxChar *)::LockResource(hData);
1392     if ( !theText )
1393         return NULL;
1394
1395     // Not all compilers put a zero at the end of the resource (e.g. BC++ doesn't).
1396     // so we need to find the length of the resource.
1397     int len = ::SizeofResource(wxGetInstance(), hResource);
1398     wxChar  *s = new wxChar[len+1];
1399     wxStrncpy(s,theText,len);
1400     s[len]=0;
1401
1402     // wxChar *s = copystring(theText);
1403
1404     // Obsolete in WIN32
1405 #ifndef __WIN32__
1406     UnlockResource(hData);
1407 #endif
1408
1409     // No need??
1410     //  GlobalFree(hData);
1411
1412     return s;
1413 }
1414 #endif // __WXMICROWIN__
1415
1416 // ----------------------------------------------------------------------------
1417 // get display info
1418 // ----------------------------------------------------------------------------
1419
1420 // See also the wxGetMousePosition in window.cpp
1421 // Deprecated: use wxPoint wxGetMousePosition() instead
1422 void wxGetMousePosition( int* x, int* y )
1423 {
1424     POINT pt;
1425     GetCursorPos( & pt );
1426     if ( x ) *x = pt.x;
1427     if ( y ) *y = pt.y;
1428 };
1429
1430 // Return TRUE if we have a colour display
1431 bool wxColourDisplay()
1432 {
1433 #ifdef __WXMICROWIN__
1434     // MICROWIN_TODO
1435     return TRUE;
1436 #else
1437     // this function is called from wxDC ctor so it is called a *lot* of times
1438     // hence we optimize it a bit but doign the check only once
1439     //
1440     // this should be MT safe as only the GUI thread (holding the GUI mutex)
1441     // can call us
1442     static int s_isColour = -1;
1443
1444     if ( s_isColour == -1 )
1445     {
1446         ScreenHDC dc;
1447         int noCols = ::GetDeviceCaps(dc, NUMCOLORS);
1448
1449         s_isColour = (noCols == -1) || (noCols > 2);
1450     }
1451
1452     return s_isColour != 0;
1453 #endif
1454 }
1455
1456 // Returns depth of screen
1457 int wxDisplayDepth()
1458 {
1459     ScreenHDC dc;
1460     return GetDeviceCaps(dc, PLANES) * GetDeviceCaps(dc, BITSPIXEL);
1461 }
1462
1463 // Get size of display
1464 void wxDisplaySize(int *width, int *height)
1465 {
1466 #ifdef __WXMICROWIN__
1467     RECT rect;
1468     HWND hWnd = GetDesktopWindow();
1469     ::GetWindowRect(hWnd, & rect);
1470
1471     if ( width )
1472         *width = rect.right - rect.left;
1473     if ( height )
1474         *height = rect.bottom - rect.top;
1475 #else // !__WXMICROWIN__
1476     ScreenHDC dc;
1477
1478     if ( width )
1479         *width = ::GetDeviceCaps(dc, HORZRES);
1480     if ( height )
1481         *height = ::GetDeviceCaps(dc, VERTRES);
1482 #endif // __WXMICROWIN__/!__WXMICROWIN__
1483 }
1484
1485 void wxDisplaySizeMM(int *width, int *height)
1486 {
1487 #ifdef __WXMICROWIN__
1488     // MICROWIN_TODO
1489     if ( width )
1490         *width = 0;
1491     if ( height )
1492         *height = 0;
1493 #else
1494     ScreenHDC dc;
1495
1496     if ( width )
1497         *width = ::GetDeviceCaps(dc, HORZSIZE);
1498     if ( height )
1499         *height = ::GetDeviceCaps(dc, VERTSIZE);
1500 #endif
1501 }
1502
1503 void wxClientDisplayRect(int *x, int *y, int *width, int *height)
1504 {
1505 #if defined(__WIN16__) || defined(__WXMICROWIN__)
1506     *x = 0; *y = 0;
1507     wxDisplaySize(width, height);
1508 #else
1509     // Determine the desktop dimensions minus the taskbar and any other
1510     // special decorations...
1511     RECT r;
1512
1513     SystemParametersInfo(SPI_GETWORKAREA, 0, &r, 0);
1514     if (x)      *x = r.left;
1515     if (y)      *y = r.top;
1516     if (width)  *width = r.right - r.left;
1517     if (height) *height = r.bottom - r.top;
1518 #endif
1519 }
1520
1521 // ---------------------------------------------------------------------------
1522 // window information functions
1523 // ---------------------------------------------------------------------------
1524
1525 wxString WXDLLEXPORT wxGetWindowText(WXHWND hWnd)
1526 {
1527     wxString str;
1528
1529     if ( hWnd )
1530     {
1531         int len = GetWindowTextLength((HWND)hWnd) + 1;
1532         ::GetWindowText((HWND)hWnd, str.GetWriteBuf(len), len);
1533         str.UngetWriteBuf();
1534     }
1535
1536     return str;
1537 }
1538
1539 wxString WXDLLEXPORT wxGetWindowClass(WXHWND hWnd)
1540 {
1541     wxString str;
1542
1543     // MICROWIN_TODO
1544 #ifndef __WXMICROWIN__
1545     if ( hWnd )
1546     {
1547         int len = 256; // some starting value
1548
1549         for ( ;; )
1550         {
1551             int count = ::GetClassName((HWND)hWnd, str.GetWriteBuf(len), len);
1552
1553             str.UngetWriteBuf();
1554             if ( count == len )
1555             {
1556                 // the class name might have been truncated, retry with larger
1557                 // buffer
1558                 len *= 2;
1559             }
1560             else
1561             {
1562                 break;
1563             }
1564         }
1565     }
1566 #endif // !__WXMICROWIN__
1567
1568     return str;
1569 }
1570
1571 WXWORD WXDLLEXPORT wxGetWindowId(WXHWND hWnd)
1572 {
1573 #ifndef __WIN32__
1574     return (WXWORD)GetWindowWord((HWND)hWnd, GWW_ID);
1575 #else // Win32
1576     return (WXWORD)GetWindowLong((HWND)hWnd, GWL_ID);
1577 #endif // Win16/32
1578 }
1579
1580 // ----------------------------------------------------------------------------
1581 // Metafile helpers
1582 // ----------------------------------------------------------------------------
1583
1584 extern void PixelToHIMETRIC(LONG *x, LONG *y)
1585 {
1586     ScreenHDC hdcRef;
1587
1588     int iWidthMM = GetDeviceCaps(hdcRef, HORZSIZE),
1589         iHeightMM = GetDeviceCaps(hdcRef, VERTSIZE),
1590         iWidthPels = GetDeviceCaps(hdcRef, HORZRES),
1591         iHeightPels = GetDeviceCaps(hdcRef, VERTRES);
1592
1593     *x *= (iWidthMM * 100);
1594     *x /= iWidthPels;
1595     *y *= (iHeightMM * 100);
1596     *y /= iHeightPels;
1597 }
1598
1599 extern void HIMETRICToPixel(LONG *x, LONG *y)
1600 {
1601     ScreenHDC hdcRef;
1602
1603     int iWidthMM = GetDeviceCaps(hdcRef, HORZSIZE),
1604         iHeightMM = GetDeviceCaps(hdcRef, VERTSIZE),
1605         iWidthPels = GetDeviceCaps(hdcRef, HORZRES),
1606         iHeightPels = GetDeviceCaps(hdcRef, VERTRES);
1607
1608     *x *= iWidthPels;
1609     *x /= (iWidthMM * 100);
1610     *y *= iHeightPels;
1611     *y /= (iHeightMM * 100);
1612 }
1613
1614 #endif // wxUSE_GUI
1615
1616 #ifdef __WXMICROWIN__
1617 int wxGetOsVersion(int *majorVsn, int *minorVsn)
1618 {
1619     // MICROWIN_TODO
1620     if (majorVsn) *majorVsn = 0;
1621     if (minorVsn) *minorVsn = 0;
1622     return wxUNIX;
1623 }
1624 #endif // __WXMICROWIN__
1625
1626 // ----------------------------------------------------------------------------
1627 // Win32 codepage conversion functions
1628 // ----------------------------------------------------------------------------
1629
1630 #if defined(__WIN32__) && !defined(__WXMICROWIN__)
1631
1632 // wxGetNativeFontEncoding() doesn't exist neither in wxBase nor in wxUniv
1633 #if wxUSE_GUI && !defined(__WXUNIVERSAL__)
1634
1635 #include "wx/fontmap.h"
1636
1637 // VZ: the new version of wxCharsetToCodepage() is more politically correct
1638 //     and should work on other Windows versions as well but the old version is
1639 //     still needed for !wxUSE_FONTMAP || !wxUSE_GUI case
1640
1641 extern long wxEncodingToCodepage(wxFontEncoding encoding)
1642 {
1643     // translate encoding into the Windows CHARSET
1644     wxNativeEncodingInfo natveEncInfo;
1645     if ( !wxGetNativeFontEncoding(encoding, &natveEncInfo) )
1646         return -1;
1647
1648     // translate CHARSET to code page
1649     CHARSETINFO csetInfo;
1650     if ( !::TranslateCharsetInfo((DWORD *)(DWORD)natveEncInfo.charset,
1651                                  &csetInfo,
1652                                  TCI_SRCCHARSET) )
1653     {
1654         wxLogLastError(_T("TranslateCharsetInfo(TCI_SRCCHARSET)"));
1655
1656         return -1;
1657     }
1658
1659     return csetInfo.ciACP;
1660 }
1661
1662 #if wxUSE_FONTMAP
1663
1664 extern long wxCharsetToCodepage(const wxChar *name)
1665 {
1666     // first get the font encoding for this charset
1667     if ( !name )
1668         return -1;
1669
1670     wxFontEncoding enc = wxFontMapper::Get()->CharsetToEncoding(name, FALSE);
1671     if ( enc == wxFONTENCODING_SYSTEM )
1672         return -1;
1673
1674     // the use the helper function
1675     return wxEncodingToCodepage(enc);
1676 }
1677
1678 #endif // wxUSE_FONTMAP
1679
1680 #endif // wxUSE_GUI
1681
1682 // include old wxCharsetToCodepage() by OK if needed
1683 #if !wxUSE_GUI || !wxUSE_FONTMAP
1684
1685 #include "wx/msw/registry.h"
1686
1687 // this should work if Internet Exploiter is installed
1688 extern long wxCharsetToCodepage(const wxChar *name)
1689 {
1690     if (!name)
1691         return GetACP();
1692
1693     long CP=-1;
1694
1695     wxString cn(name);
1696     do {
1697         wxString path(wxT("MIME\\Database\\Charset\\"));
1698         path += cn;
1699         wxRegKey key(wxRegKey::HKCR, path);
1700
1701         if (!key.Exists()) break;
1702
1703         // two cases: either there's an AliasForCharset string,
1704         // or there are Codepage and InternetEncoding dwords.
1705         // The InternetEncoding gives us the actual encoding,
1706         // the Codepage just says which Windows character set to
1707         // use when displaying the data.
1708         if (key.HasValue(wxT("InternetEncoding")) &&
1709             key.QueryValue(wxT("InternetEncoding"), &CP)) break;
1710
1711         // no encoding, see if it's an alias
1712         if (!key.HasValue(wxT("AliasForCharset")) ||
1713             !key.QueryValue(wxT("AliasForCharset"), cn)) break;
1714     } while (1);
1715
1716     return CP;
1717 }
1718
1719 #endif // !wxUSE_GUI || !wxUSE_FONTMAP
1720
1721 #endif // Win32
1722