src/msw/utils.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        msw/utils.cpp
   3 // Purpose:     Various utilities
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21 // #pragma implementation "utils.h"   // Note: this is done in utilscmn.cpp now.
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/utils.h"
  33     #include "wx/app.h"
  34     #include "wx/intl.h"
  35     #include "wx/log.h"
  36 #if wxUSE_GUI
  37     #include "wx/cursor.h"
  38 #endif
  39 #endif  //WX_PRECOMP
  40
  41 // In some mingws there is a missing extern "C" int the winsock header,
  42 // so we put it here just to be safe. Note that this must appear _before_
  43 // #include "wx/msw/private.h" which itself includes <windows.h>, as this
  44 // one in turn includes <winsock.h> unless we define WIN32_LEAN_AND_MEAN.
  45 //
  46 #if defined(__WIN32__) && !defined(__TWIN32__) && !defined(__WXMICROWIN__) && ! (defined(__GNUWIN32__) && !defined(__MINGW32__))
  47 extern "C" {
  48     #include <winsock.h>    // we use socket functions in wxGetFullHostName()
  49 }
  50 #endif
  51
  52 #include "wx/msw/private.h"     // includes <windows.h>
  53
  54 #include "wx/timer.h"
  55
  56 #if !defined(__GNUWIN32__) && !defined(__WXWINE__) && !defined(__SALFORDC__) && !defined(__WXMICROWIN__)
  57     #include <direct.h>
  58
  59     #ifndef __MWERKS__
  60         #include <dos.h>
  61     #endif
  62 #endif  //GNUWIN32
  63
  64 #if defined(__CYGWIN__) && !defined(__TWIN32__)
  65     #include <sys/unistd.h>
  66     #include <sys/stat.h>
  67     #include <sys/cygwin.h> // for cygwin_conv_to_full_win32_path()
  68 #endif  //GNUWIN32
  69
  70 #ifdef __BORLANDC__ // Please someone tell me which version of Borland needs
  71                     // this (3.1 I believe) and how to test for it.
  72                     // If this works for Borland 4.0 as well, then no worries.
  73     #include <dir.h>
  74 #endif
  75
  76 // VZ: there is some code using NetXXX() functions to get the full user name:
  77 //     I don't think it's a good idea because they don't work under Win95 and
  78 //     seem to return the same as wxGetUserId() under NT. If you really want
  79 //     to use them, just #define USE_NET_API
  80 #undef USE_NET_API
  81
  82 #ifdef USE_NET_API
  83     #include <lm.h>
  84 #endif // USE_NET_API
  85
  86 #if defined(__WIN32__) && !defined(__WXWINE__) && !defined(__WXMICROWIN__)
  87     #include <io.h>
  88
  89     #ifndef __GNUWIN32__
  90         #include <shellapi.h>
  91     #endif
  92 #endif
  93
  94 #ifndef __WATCOMC__
  95     #if !(defined(_MSC_VER) && (_MSC_VER > 800))
  96         #include <errno.h>
  97     #endif
  98 #endif
  99
 100 //// BEGIN for console support: VC++ only
 101 #ifdef __VISUALC__
 102
 103 #include "wx/msw/msvcrt.h"
 104
 105 #include <fcntl.h>
 106
 107 #include "wx/ioswrap.h"
 108
 109 /* Need to undef new if including crtdbg.h */
 110 #  ifdef new
 111 #  undef new
 112 #  endif
 113
 114 #ifndef __WIN16__
 115 #  include <crtdbg.h>
 116 #endif
 117
 118 #  if defined(__WXDEBUG__) && wxUSE_GLOBAL_MEMORY_OPERATORS && wxUSE_DEBUG_NEW_ALWAYS
 119 #  define new new(__TFILE__,__LINE__)
 120 #  endif
 121
 122 #endif
 123   // __VISUALC__
 124 /// END for console support
 125
 126 // ----------------------------------------------------------------------------
 127 // constants
 128 // ----------------------------------------------------------------------------
 129
 130 // In the WIN.INI file
 131 static const wxChar WX_SECTION[] = wxT("wxWindows");
 132 static const wxChar eUSERNAME[]  = wxT("UserName");
 133
 134 // these are only used under Win16
 135 #if !defined(__WIN32__) && !defined(__WXMICROWIN__)
 136 static const wxChar eHOSTNAME[]  = wxT("HostName");
 137 static const wxChar eUSERID[]    = wxT("UserId");
 138 #endif // !Win32
 139
 140 #ifndef __WXMICROWIN__
 141
 142 // ============================================================================
 143 // implementation
 144 // ============================================================================
 145
 146 // ----------------------------------------------------------------------------
 147 // get host name and related
 148 // ----------------------------------------------------------------------------
 149
 150 // Get hostname only (without domain name)
 151 bool wxGetHostName(wxChar *buf, int maxSize)
 152 {
 153 #if defined(__WIN32__) && !defined(__TWIN32__) && !defined(__WXMICROWIN__)
 154     DWORD nSize = maxSize;
 155     if ( !::GetComputerName(buf, &nSize) )
 156     {
 157         wxLogLastError(wxT("GetComputerName"));
 158
 159         return FALSE;
 160     }
 161
 162     return TRUE;
 163 #else
 164     wxChar *sysname;
 165     const wxChar *default_host = wxT("noname");
 166
 167     if ((sysname = wxGetenv(wxT("SYSTEM_NAME"))) == NULL) {
 168         GetProfileString(WX_SECTION, eHOSTNAME, default_host, buf, maxSize - 1);
 169     } else
 170         wxStrncpy(buf, sysname, maxSize - 1);
 171     buf[maxSize] = wxT('\0');
 172     return *buf ? TRUE : FALSE;
 173 #endif
 174 }
 175
 176 // get full hostname (with domain name if possible)
 177 bool wxGetFullHostName(wxChar *buf, int maxSize)
 178 {
 179 #if defined(__WIN32__) && !defined(__TWIN32__) && !defined(__WXMICROWIN__) && ! (defined(__GNUWIN32__) && !defined(__MINGW32__))
 180     // TODO should use GetComputerNameEx() when available
 181
 182     // the idea is that if someone had set wxUSE_SOCKETS to 0 the code
 183     // shouldn't use winsock.dll (a.k.a. ws2_32.dll) at all so only use this
 184     // code if we link with it anyhow
 185 #if wxUSE_SOCKETS
 186     WSADATA wsa;
 187     if ( WSAStartup(MAKEWORD(1, 1), &wsa) == 0 )
 188     {
 189         wxString host;
 190         char bufA[256];
 191         if ( gethostname(bufA, WXSIZEOF(bufA)) == 0 )
 192         {
 193             // gethostname() won't usually include the DNS domain name, for
 194             // this we need to work a bit more
 195             if ( !strchr(bufA, '.') )
 196             {
 197                 struct hostent *pHostEnt =  gethostbyname(bufA);
 198
 199                 if ( pHostEnt )
 200                 {
 201                     // Windows will use DNS internally now
 202                     pHostEnt = gethostbyaddr(pHostEnt->h_addr, 4, PF_INET);
 203                 }
 204
 205                 if ( pHostEnt )
 206                 {
 207                     host = pHostEnt->h_name;
 208                 }
 209             }
 210         }
 211
 212         WSACleanup();
 213
 214         if ( !host.empty() )
 215         {
 216             wxStrncpy(buf, host, maxSize);
 217
 218             return TRUE;
 219         }
 220     }
 221 #endif // wxUSE_SOCKETS
 222
 223 #endif // Win32
 224
 225     return wxGetHostName(buf, maxSize);
 226 }
 227
 228 // Get user ID e.g. jacs
 229 bool wxGetUserId(wxChar *buf, int maxSize)
 230 {
 231 #if defined(__WIN32__) && !defined(__win32s__) && !defined(__TWIN32__) && !defined(__WXMICROWIN__)
 232     DWORD nSize = maxSize;
 233     if ( ::GetUserName(buf, &nSize) == 0 )
 234     {
 235         // actually, it does happen on Win9x if the user didn't log on
 236         DWORD res = ::GetEnvironmentVariable(wxT("username"), buf, maxSize);
 237         if ( res == 0 )
 238         {
 239             // not found
 240             return FALSE;
 241         }
 242     }
 243
 244     return TRUE;
 245 #else   // Win16 or Win32s
 246     wxChar *user;
 247     const wxChar *default_id = wxT("anonymous");
 248
 249     // Can't assume we have NIS (PC-NFS) or some other ID daemon
 250     // So we ...
 251     if (  (user = wxGetenv(wxT("USER"))) == NULL &&
 252             (user = wxGetenv(wxT("LOGNAME"))) == NULL )
 253     {
 254         // Use wxWindows configuration data (comming soon)
 255         GetProfileString(WX_SECTION, eUSERID, default_id, buf, maxSize - 1);
 256     }
 257     else
 258     {
 259         wxStrncpy(buf, user, maxSize - 1);
 260     }
 261
 262     return *buf ? TRUE : FALSE;
 263 #endif
 264 }
 265
 266 // Get user name e.g. Julian Smart
 267 bool wxGetUserName(wxChar *buf, int maxSize)
 268 {
 269 #if wxUSE_PENWINDOWS && !defined(__WATCOMC__) && !defined(__GNUWIN32__)
 270     extern HANDLE g_hPenWin; // PenWindows Running?
 271     if (g_hPenWin)
 272     {
 273         // PenWindows Does have a user concept!
 274         // Get the current owner of the recognizer
 275         GetPrivateProfileString("Current", "User", default_name, wxBuffer, maxSize - 1, "PENWIN.INI");
 276         strncpy(buf, wxBuffer, maxSize - 1);
 277     }
 278     else
 279 #endif
 280     {
 281 #ifdef USE_NET_API
 282         CHAR szUserName[256];
 283         if ( !wxGetUserId(szUserName, WXSIZEOF(szUserName)) )
 284             return FALSE;
 285
 286         // TODO how to get the domain name?
 287         CHAR *szDomain = "";
 288
 289         // the code is based on the MSDN example (also see KB article Q119670)
 290         WCHAR wszUserName[256];          // Unicode user name
 291         WCHAR wszDomain[256];
 292         LPBYTE ComputerName;
 293
 294         USER_INFO_2 *ui2;         // User structure
 295
 296         // Convert ANSI user name and domain to Unicode
 297         MultiByteToWideChar( CP_ACP, 0, szUserName, strlen(szUserName)+1,
 298                 wszUserName, WXSIZEOF(wszUserName) );
 299         MultiByteToWideChar( CP_ACP, 0, szDomain, strlen(szDomain)+1,
 300                 wszDomain, WXSIZEOF(wszDomain) );
 301
 302         // Get the computer name of a DC for the domain.
 303         if ( NetGetDCName( NULL, wszDomain, &ComputerName ) != NERR_Success )
 304         {
 305             wxLogError(wxT("Can not find domain controller"));
 306
 307             goto error;
 308         }
 309
 310         // Look up the user on the DC
 311         NET_API_STATUS status = NetUserGetInfo( (LPWSTR)ComputerName,
 312                 (LPWSTR)&wszUserName,
 313                 2, // level - we want USER_INFO_2
 314                 (LPBYTE *) &ui2 );
 315         switch ( status )
 316         {
 317             case NERR_Success:
 318                 // ok
 319                 break;
 320
 321             case NERR_InvalidComputer:
 322                 wxLogError(wxT("Invalid domain controller name."));
 323
 324                 goto error;
 325
 326             case NERR_UserNotFound:
 327                 wxLogError(wxT("Invalid user name '%s'."), szUserName);
 328
 329                 goto error;
 330
 331             default:
 332                 wxLogSysError(wxT("Can't get information about user"));
 333
 334                 goto error;
 335         }
 336
 337         // Convert the Unicode full name to ANSI
 338         WideCharToMultiByte( CP_ACP, 0, ui2->usri2_full_name, -1,
 339                 buf, maxSize, NULL, NULL );
 340
 341         return TRUE;
 342
 343 error:
 344         wxLogError(wxT("Couldn't look up full user name."));
 345
 346         return FALSE;
 347 #else  // !USE_NET_API
 348         // Could use NIS, MS-Mail or other site specific programs
 349         // Use wxWindows configuration data
 350         bool ok = GetProfileString(WX_SECTION, eUSERNAME, wxT(""), buf, maxSize - 1) != 0;
 351         if ( !ok )
 352         {
 353             ok = wxGetUserId(buf, maxSize);
 354         }
 355
 356         if ( !ok )
 357         {
 358             wxStrncpy(buf, wxT("Unknown User"), maxSize);
 359         }
 360 #endif // Win32/16
 361     }
 362
 363     return TRUE;
 364 }
 365
 366 const wxChar* wxGetHomeDir(wxString *pstr)
 367 {
 368   wxString& strDir = *pstr;
 369
 370   #if defined(__UNIX__) && !defined(__TWIN32__)
 371     const wxChar *szHome = wxGetenv("HOME");
 372     if ( szHome == NULL ) {
 373       // we're homeless...
 374       wxLogWarning(_("can't find user's HOME, using current directory."));
 375       strDir = wxT(".");
 376     }
 377     else
 378        strDir = szHome;
 379
 380     // add a trailing slash if needed
 381     if ( strDir.Last() != wxT('/') )
 382       strDir << wxT('/');
 383
 384     #ifdef __CYGWIN__
 385       // Cygwin returns unix type path but that does not work well
 386       static wxChar windowsPath[MAX_PATH];
 387       cygwin_conv_to_full_win32_path(strDir, windowsPath);
 388       strDir = windowsPath;
 389     #endif
 390   #else   // Windows
 391     #ifdef  __WIN32__
 392       strDir.clear();
 393
 394       // If we have a valid HOME directory, as is used on many machines that
 395       // have unix utilities on them, we should use that.
 396       const wxChar *szHome = wxGetenv(wxT("HOME"));
 397
 398       if ( szHome != NULL )
 399       {
 400         strDir = szHome;
 401       }
 402       else // no HOME, try HOMEDRIVE/PATH
 403       {
 404           szHome = wxGetenv(wxT("HOMEDRIVE"));
 405           if ( szHome != NULL )
 406             strDir << szHome;
 407           szHome = wxGetenv(wxT("HOMEPATH"));
 408
 409           if ( szHome != NULL )
 410           {
 411             strDir << szHome;
 412
 413             // the idea is that under NT these variables have default values
 414             // of "%systemdrive%:" and "\\". As we don't want to create our
 415             // config files in the root directory of the system drive, we will
 416             // create it in our program's dir. However, if the user took care
 417             // to set HOMEPATH to something other than "\\", we suppose that he
 418             // knows what he is doing and use the supplied value.
 419             if ( wxStrcmp(szHome, wxT("\\")) == 0 )
 420               strDir.clear();
 421           }
 422       }
 423
 424       if ( strDir.empty() )
 425       {
 426           // If we have a valid USERPROFILE directory, as is the case in
 427           // Windows NT, 2000 and XP, we should use that as our home directory.
 428           szHome = wxGetenv(wxT("USERPROFILE"));
 429
 430           if ( szHome != NULL )
 431             strDir = szHome;
 432       }
 433
 434       if ( !strDir.empty() )
 435       {
 436           return strDir.c_str();
 437       }
 438       //else: fall back to the prograrm directory
 439     #else   // Win16
 440       // Win16 has no idea about home, so use the executable directory instead
 441     #endif  // WIN16/32
 442
 443     // 260 was taken from windef.h
 444     #ifndef MAX_PATH
 445       #define MAX_PATH  260
 446     #endif
 447
 448     wxString strPath;
 449     ::GetModuleFileName(::GetModuleHandle(NULL),
 450                         strPath.GetWriteBuf(MAX_PATH), MAX_PATH);
 451     strPath.UngetWriteBuf();
 452
 453     // extract the dir name
 454     wxSplitPath(strPath, &strDir, NULL, NULL);
 455
 456   #endif  // UNIX/Win
 457
 458   return strDir.c_str();
 459 }
 460
 461 wxChar *wxGetUserHome(const wxString& WXUNUSED(user))
 462 {
 463     // VZ: the old code here never worked for user != "" anyhow! Moreover, it
 464     //     returned sometimes a malloc()'d pointer, sometimes a pointer to a
 465     //     static buffer and sometimes I don't even know what.
 466     static wxString s_home;
 467
 468     return (wxChar *)wxGetHomeDir(&s_home);
 469 }
 470
 471 bool wxDirExists(const wxString& dir)
 472 {
 473 #ifdef __WXMICROWIN__
 474     return wxPathExist(dir);
 475 #elif defined(__WIN32__)
 476     DWORD attribs = GetFileAttributes(dir);
 477     return ((attribs != (DWORD)-1) && (attribs & FILE_ATTRIBUTE_DIRECTORY));
 478 #else // Win16
 479     #ifdef __BORLANDC__
 480         struct ffblk fileInfo;
 481     #else
 482         struct find_t fileInfo;
 483     #endif
 484     // In Borland findfirst has a different argument
 485     // ordering from _dos_findfirst. But _dos_findfirst
 486     // _should_ be ok in both MS and Borland... why not?
 487     #ifdef __BORLANDC__
 488         return (findfirst(dir, &fileInfo, _A_SUBDIR) == 0 &&
 489                (fileInfo.ff_attrib & _A_SUBDIR) != 0);
 490     #else
 491         return (_dos_findfirst(dir, _A_SUBDIR, &fileInfo) == 0) &&
 492                ((fileInfo.attrib & _A_SUBDIR) != 0);
 493     #endif
 494 #endif // Win32/16
 495 }
 496
 497 bool wxGetDiskSpace(const wxString& path, wxLongLong *pTotal, wxLongLong *pFree)
 498 {
 499     if ( path.empty() )
 500         return FALSE;
 501
 502 // old w32api don't have ULARGE_INTEGER
 503 #if defined(__WIN32__) && \
 504     (!defined(__GNUWIN32__) || wxCHECK_W32API_VERSION( 0, 3 ))
 505     // GetDiskFreeSpaceEx() is not available under original Win95, check for
 506     // it
 507     typedef BOOL (WINAPI *GetDiskFreeSpaceEx_t)(LPCTSTR,
 508                                                 PULARGE_INTEGER,
 509                                                 PULARGE_INTEGER,
 510                                                 PULARGE_INTEGER);
 511
 512     GetDiskFreeSpaceEx_t
 513         pGetDiskFreeSpaceEx = (GetDiskFreeSpaceEx_t)::GetProcAddress
 514                               (
 515                                 ::GetModuleHandle(_T("kernel32.dll")),
 516 #if wxUSE_UNICODE
 517                                 "GetDiskFreeSpaceExW"
 518 #else
 519                                 "GetDiskFreeSpaceExA"
 520 #endif
 521                               );
 522
 523     if ( pGetDiskFreeSpaceEx )
 524     {
 525         ULARGE_INTEGER bytesFree, bytesTotal;
 526
 527         // may pass the path as is, GetDiskFreeSpaceEx() is smart enough
 528         if ( !pGetDiskFreeSpaceEx(path,
 529                                   &bytesFree,
 530                                   &bytesTotal,
 531                                   NULL) )
 532         {
 533             wxLogLastError(_T("GetDiskFreeSpaceEx"));
 534
 535             return FALSE;
 536         }
 537
 538         // ULARGE_INTEGER is a union of a 64 bit value and a struct containing
 539         // two 32 bit fields which may be or may be not named - try to make it
 540         // compile in all cases
 541 #if defined(__BORLANDC__) && !defined(_ANONYMOUS_STRUCT)
 542         #define UL(ul) ul.u
 543 #else // anon union
 544         #define UL(ul) ul
 545 #endif
 546         if ( pTotal )
 547         {
 548             *pTotal = wxLongLong(UL(bytesTotal).HighPart, UL(bytesTotal).LowPart);
 549         }
 550
 551         if ( pFree )
 552         {
 553             *pFree = wxLongLong(UL(bytesFree).HighPart, UL(bytesFree).LowPart);
 554         }
 555     }
 556     else
 557 #endif // Win32
 558     {
 559         // there's a problem with drives larger than 2GB, GetDiskFreeSpaceEx()
 560         // should be used instead - but if it's not available, fall back on
 561         // GetDiskFreeSpace() nevertheless...
 562
 563         DWORD lSectorsPerCluster,
 564               lBytesPerSector,
 565               lNumberOfFreeClusters,
 566               lTotalNumberOfClusters;
 567
 568         // FIXME: this is wrong, we should extract the root drive from path
 569         //        instead, but this is the job for wxFileName...
 570         if ( !::GetDiskFreeSpace(path,
 571                                  &lSectorsPerCluster,
 572                                  &lBytesPerSector,
 573                                  &lNumberOfFreeClusters,
 574                                  &lTotalNumberOfClusters) )
 575         {
 576             wxLogLastError(_T("GetDiskFreeSpace"));
 577
 578             return FALSE;
 579         }
 580
 581         wxLongLong lBytesPerCluster = lSectorsPerCluster;
 582         lBytesPerCluster *= lBytesPerSector;
 583
 584         if ( pTotal )
 585         {
 586             *pTotal = lBytesPerCluster;
 587             *pTotal *= lTotalNumberOfClusters;
 588         }
 589
 590         if ( pFree )
 591         {
 592             *pFree = lBytesPerCluster;
 593             *pFree *= lNumberOfFreeClusters;
 594         }
 595     }
 596
 597     return TRUE;
 598 }
 599
 600 // ----------------------------------------------------------------------------
 601 // env vars
 602 // ----------------------------------------------------------------------------
 603
 604 bool wxGetEnv(const wxString& var, wxString *value)
 605 {
 606 #ifdef __WIN16__
 607     const wxChar* ret = wxGetenv(var);
 608     if (ret)
 609     {
 610         *value = ret;
 611         return TRUE;
 612     }
 613     else
 614         return FALSE;
 615 #else
 616     // first get the size of the buffer
 617     DWORD dwRet = ::GetEnvironmentVariable(var, NULL, 0);
 618     if ( !dwRet )
 619     {
 620         // this means that there is no such variable
 621         return FALSE;
 622     }
 623
 624     if ( value )
 625     {
 626         (void)::GetEnvironmentVariable(var, value->GetWriteBuf(dwRet), dwRet);
 627         value->UngetWriteBuf();
 628     }
 629
 630     return TRUE;
 631 #endif
 632 }
 633
 634 bool wxSetEnv(const wxString& var, const wxChar *value)
 635 {
 636     // some compilers have putenv() or _putenv() or _wputenv() but it's better
 637     // to always use Win32 function directly instead of dealing with them
 638 #if defined(__WIN32__)
 639     if ( !::SetEnvironmentVariable(var, value) )
 640     {
 641         wxLogLastError(_T("SetEnvironmentVariable"));
 642
 643         return FALSE;
 644     }
 645
 646     return TRUE;
 647 #else // no way to set env vars
 648     return FALSE;
 649 #endif
 650 }
 651
 652 // ----------------------------------------------------------------------------
 653 // process management
 654 // ----------------------------------------------------------------------------
 655
 656 #ifdef __WIN32__
 657
 658 // structure used to pass parameters from wxKill() to wxEnumFindByPidProc()
 659 struct wxFindByPidParams
 660 {
 661     wxFindByPidParams() { hwnd = 0; pid = 0; }
 662
 663     // the HWND used to return the result
 664     HWND hwnd;
 665
 666     // the PID we're looking from
 667     DWORD pid;
 668 };
 669
 670 // wxKill helper: EnumWindows() callback which is used to find the first (top
 671 // level) window belonging to the given process
 672 BOOL CALLBACK wxEnumFindByPidProc(HWND hwnd, LPARAM lParam)
 673 {
 674     DWORD pid;
 675     (void)::GetWindowThreadProcessId(hwnd, &pid);
 676
 677     wxFindByPidParams *params = (wxFindByPidParams *)lParam;
 678     if ( pid == params->pid )
 679     {
 680         // remember the window we found
 681         params->hwnd = hwnd;
 682
 683         // return FALSE to stop the enumeration
 684         return FALSE;
 685     }
 686
 687     // continue enumeration
 688     return TRUE;
 689 }
 690
 691 #endif // __WIN32__
 692
 693 int wxKill(long pid, wxSignal sig, wxKillError *krc)
 694 {
 695 #ifdef __WIN32__
 696     // get the process handle to operate on
 697     HANDLE hProcess = ::OpenProcess(SYNCHRONIZE |
 698                                     PROCESS_TERMINATE |
 699                                     PROCESS_QUERY_INFORMATION,
 700                                     FALSE, // not inheritable
 701                                     (DWORD)pid);
 702     if ( hProcess == NULL )
 703     {
 704         if ( krc )
 705         {
 706             if ( ::GetLastError() == ERROR_ACCESS_DENIED )
 707             {
 708                 *krc = wxKILL_ACCESS_DENIED;
 709             }
 710             else
 711             {
 712                 *krc = wxKILL_NO_PROCESS;
 713             }
 714         }
 715
 716         return -1;
 717     }
 718
 719     bool ok = TRUE;
 720     switch ( sig )
 721     {
 722         case wxSIGKILL:
 723             // kill the process forcefully returning -1 as error code
 724             if ( !::TerminateProcess(hProcess, (UINT)-1) )
 725             {
 726                 wxLogSysError(_("Failed to kill process %d"), pid);
 727
 728                 if ( krc )
 729                 {
 730                     // this is not supposed to happen if we could open the
 731                     // process
 732                     *krc = wxKILL_ERROR;
 733                 }
 734
 735                 ok = FALSE;
 736             }
 737             break;
 738
 739         case wxSIGNONE:
 740             // do nothing, we just want to test for process existence
 741             break;
 742
 743         default:
 744             // any other signal means "terminate"
 745             {
 746                 wxFindByPidParams params;
 747                 params.pid = (DWORD)pid;
 748
 749                 // EnumWindows() has nice semantics: it returns 0 if it found
 750                 // something or if an error occured and non zero if it
 751                 // enumerated all the window
 752                 if ( !::EnumWindows(wxEnumFindByPidProc, (LPARAM)&params) )
 753                 {
 754                     // did we find any window?
 755                     if ( params.hwnd )
 756                     {
 757                         // tell the app to close
 758                         //
 759                         // NB: this is the harshest way, the app won't have
 760                         //     opportunity to save any files, for example, but
 761                         //     this is probably what we want here. If not we
 762                         //     can also use SendMesageTimeout(WM_CLOSE)
 763                         if ( !::PostMessage(params.hwnd, WM_QUIT, 0, 0) )
 764                         {
 765                             wxLogLastError(_T("PostMessage(WM_QUIT)"));
 766                         }
 767                     }
 768                     else // it was an error then
 769                     {
 770                         wxLogLastError(_T("EnumWindows"));
 771
 772                         ok = FALSE;
 773                     }
 774                 }
 775                 else // no windows for this PID
 776                 {
 777                     if ( krc )
 778                     {
 779                         *krc = wxKILL_ERROR;
 780                     }
 781
 782                     ok = FALSE;
 783                 }
 784             }
 785     }
 786
 787     // the return code
 788     DWORD rc;
 789
 790     if ( ok )
 791     {
 792         // as we wait for a short time, we can use just WaitForSingleObject()
 793         // and not MsgWaitForMultipleObjects()
 794         switch ( ::WaitForSingleObject(hProcess, 500 /* msec */) )
 795         {
 796             case WAIT_OBJECT_0:
 797                 // process terminated
 798                 if ( !::GetExitCodeProcess(hProcess, &rc) )
 799                 {
 800                     wxLogLastError(_T("GetExitCodeProcess"));
 801                 }
 802                 break;
 803
 804             default:
 805                 wxFAIL_MSG( _T("unexpected WaitForSingleObject() return") );
 806                 // fall through
 807
 808             case WAIT_FAILED:
 809                 wxLogLastError(_T("WaitForSingleObject"));
 810                 // fall through
 811
 812             case WAIT_TIMEOUT:
 813                 if ( krc )
 814                 {
 815                     *krc = wxKILL_ERROR;
 816                 }
 817
 818                 rc = STILL_ACTIVE;
 819                 break;
 820         }
 821     }
 822     else // !ok
 823     {
 824         // just to suppress the warnings about uninitialized variable
 825         rc = 0;
 826     }
 827
 828     ::CloseHandle(hProcess);
 829
 830     // the return code is the same as from Unix kill(): 0 if killed
 831     // successfully or -1 on error
 832     if ( sig == wxSIGNONE )
 833     {
 834         if ( ok && rc == STILL_ACTIVE )
 835         {
 836             // there is such process => success
 837             return 0;
 838         }
 839     }
 840     else // not SIGNONE
 841     {
 842         if ( ok && rc != STILL_ACTIVE )
 843         {
 844             // killed => success
 845             return 0;
 846         }
 847     }
 848 #else // Win16
 849     wxFAIL_MSG( _T("not implemented") );
 850 #endif // Win32/Win16
 851
 852     // error
 853     return -1;
 854 }
 855
 856 // Execute a program in an Interactive Shell
 857 bool wxShell(const wxString& command)
 858 {
 859     wxChar *shell = wxGetenv(wxT("COMSPEC"));
 860     if ( !shell )
 861         shell = wxT("\\COMMAND.COM");
 862
 863     wxString cmd;
 864     if ( !command )
 865     {
 866         // just the shell
 867         cmd = shell;
 868     }
 869     else
 870     {
 871         // pass the command to execute to the command processor
 872         cmd.Printf(wxT("%s /c %s"), shell, command.c_str());
 873     }
 874
 875     return wxExecute(cmd, TRUE /* sync */) != 0;
 876 }
 877
 878 // Shutdown or reboot the PC
 879 bool wxShutdown(wxShutdownFlags wFlags)
 880 {
 881 #ifdef __WIN32__
 882     bool bOK = TRUE;
 883
 884     if ( wxGetOsVersion(NULL, NULL) == wxWINDOWS_NT ) // if is NT or 2K
 885     {
 886         // Get a token for this process.
 887         HANDLE hToken;
 888         bOK = ::OpenProcessToken(GetCurrentProcess(),
 889                                  TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY,
 890                                  &hToken) != 0;
 891         if ( bOK )
 892         {
 893             TOKEN_PRIVILEGES tkp;
 894
 895             // Get the LUID for the shutdown privilege.
 896             ::LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,
 897                                    &tkp.Privileges[0].Luid);
 898
 899             tkp.PrivilegeCount = 1;  // one privilege to set
 900             tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
 901
 902             // Get the shutdown privilege for this process.
 903             ::AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,
 904                                     (PTOKEN_PRIVILEGES)NULL, 0);
 905
 906             // Cannot test the return value of AdjustTokenPrivileges.
 907             bOK = ::GetLastError() == ERROR_SUCCESS;
 908         }
 909     }
 910
 911     if ( bOK )
 912     {
 913         UINT flags = EWX_SHUTDOWN | EWX_FORCE;
 914         switch ( wFlags )
 915         {
 916             case wxSHUTDOWN_POWEROFF:
 917                 flags |= EWX_POWEROFF;
 918                 break;
 919
 920             case wxSHUTDOWN_REBOOT:
 921                 flags |= EWX_REBOOT;
 922                 break;
 923
 924             default:
 925                 wxFAIL_MSG( _T("unknown wxShutdown() flag") );
 926                 return FALSE;
 927         }
 928
 929         bOK = ::ExitWindowsEx(EWX_SHUTDOWN | EWX_FORCE | EWX_REBOOT, 0) != 0;
 930     }
 931
 932     return bOK;
 933 #else // Win16
 934     return FALSE;
 935 #endif // Win32/16
 936 }
 937
 938 // ----------------------------------------------------------------------------
 939 // misc
 940 // ----------------------------------------------------------------------------
 941
 942 // Get free memory in bytes, or -1 if cannot determine amount (e.g. on UNIX)
 943 long wxGetFreeMemory()
 944 {
 945 #if defined(__WIN32__) && !defined(__BORLANDC__) && !defined(__TWIN32__)
 946     MEMORYSTATUS memStatus;
 947     memStatus.dwLength = sizeof(MEMORYSTATUS);
 948     GlobalMemoryStatus(&memStatus);
 949     return memStatus.dwAvailPhys;
 950 #else
 951     return (long)GetFreeSpace(0);
 952 #endif
 953 }
 954
 955 // Emit a beeeeeep
 956 void wxBell()
 957 {
 958     ::MessageBeep((UINT)-1);        // default sound
 959 }
 960
 961 wxString wxGetOsDescription()
 962 {
 963 #ifdef __WIN32__
 964     wxString str;
 965
 966     OSVERSIONINFO info;
 967     wxZeroMemory(info);
 968
 969     info.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
 970     if ( ::GetVersionEx(&info) )
 971     {
 972         switch ( info.dwPlatformId )
 973         {
 974             case VER_PLATFORM_WIN32s:
 975                 str = _("Win32s on Windows 3.1");
 976                 break;
 977
 978             case VER_PLATFORM_WIN32_WINDOWS:
 979                 str.Printf(_("Windows 9%c"),
 980                            info.dwMinorVersion == 0 ? _T('5') : _T('8'));
 981                 if ( !wxIsEmpty(info.szCSDVersion) )
 982                 {
 983                     str << _T(" (") << info.szCSDVersion << _T(')');
 984                 }
 985                 break;
 986
 987             case VER_PLATFORM_WIN32_NT:
 988                 str.Printf(_T("Windows NT %lu.%lu (build %lu"),
 989                            info.dwMajorVersion,
 990                            info.dwMinorVersion,
 991                            info.dwBuildNumber);
 992                 if ( !wxIsEmpty(info.szCSDVersion) )
 993                 {
 994                     str << _T(", ") << info.szCSDVersion;
 995                 }
 996                 str << _T(')');
 997                 break;
 998         }
 999     }
1000     else
1001     {
1002         wxFAIL_MSG( _T("GetVersionEx() failed") ); // should never happen
1003     }
1004
1005     return str;
1006 #else // Win16
1007     return _("Windows 3.1");
1008 #endif // Win32/16
1009 }
1010
1011 int wxGetOsVersion(int *majorVsn, int *minorVsn)
1012 {
1013 #if defined(__WIN32__) && !defined(__SC__)
1014     static int ver = -1, major = -1, minor = -1;
1015
1016     if ( ver == -1 )
1017     {
1018         OSVERSIONINFO info;
1019         wxZeroMemory(info);
1020
1021         ver = wxWINDOWS;
1022         info.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
1023         if ( ::GetVersionEx(&info) )
1024         {
1025             major = info.dwMajorVersion;
1026             minor = info.dwMinorVersion;
1027
1028             switch ( info.dwPlatformId )
1029             {
1030                 case VER_PLATFORM_WIN32s:
1031                     ver = wxWIN32S;
1032                     break;
1033
1034                 case VER_PLATFORM_WIN32_WINDOWS:
1035                     ver = wxWIN95;
1036                     break;
1037
1038                 case VER_PLATFORM_WIN32_NT:
1039                     ver = wxWINDOWS_NT;
1040                     break;
1041             }
1042         }
1043     }
1044
1045     if (majorVsn && major != -1)
1046         *majorVsn = major;
1047     if (minorVsn && minor != -1)
1048         *minorVsn = minor;
1049
1050     return ver;
1051 #else // Win16
1052     int retValue = wxWINDOWS;
1053     #ifdef __WINDOWS_386__
1054         retValue = wxWIN386;
1055     #else
1056         #if !defined(__WATCOMC__) && !defined(GNUWIN32) && wxUSE_PENWINDOWS
1057             extern HANDLE g_hPenWin;
1058             retValue = g_hPenWin ? wxPENWINDOWS : wxWINDOWS;
1059         #endif
1060     #endif
1061
1062     if (majorVsn)
1063         *majorVsn = 3;
1064     if (minorVsn)
1065         *minorVsn = 1;
1066
1067     return retValue;
1068 #endif
1069 }
1070
1071 // ----------------------------------------------------------------------------
1072 // sleep functions
1073 // ----------------------------------------------------------------------------
1074
1075 #if wxUSE_GUI
1076
1077 #if wxUSE_TIMER
1078
1079 // Sleep for nSecs seconds. Attempt a Windows implementation using timers.
1080 static bool gs_inTimer = FALSE;
1081
1082 class wxSleepTimer : public wxTimer
1083 {
1084 public:
1085     virtual void Notify()
1086     {
1087         gs_inTimer = FALSE;
1088         Stop();
1089     }
1090 };
1091
1092 static wxTimer *wxTheSleepTimer = NULL;
1093
1094 void wxUsleep(unsigned long milliseconds)
1095 {
1096 #ifdef __WIN32__
1097     ::Sleep(milliseconds);
1098 #else // !Win32
1099     if (gs_inTimer)
1100         return;
1101
1102     wxTheSleepTimer = new wxSleepTimer;
1103     gs_inTimer = TRUE;
1104     wxTheSleepTimer->Start(milliseconds);
1105     while (gs_inTimer)
1106     {
1107         if (wxTheApp->Pending())
1108             wxTheApp->Dispatch();
1109     }
1110     delete wxTheSleepTimer;
1111     wxTheSleepTimer = NULL;
1112 #endif // Win32/!Win32
1113 }
1114
1115 void wxSleep(int nSecs)
1116 {
1117     if (gs_inTimer)
1118         return;
1119
1120     wxTheSleepTimer = new wxSleepTimer;
1121     gs_inTimer = TRUE;
1122     wxTheSleepTimer->Start(nSecs*1000);
1123     while (gs_inTimer)
1124     {
1125         if (wxTheApp->Pending())
1126             wxTheApp->Dispatch();
1127     }
1128     delete wxTheSleepTimer;
1129     wxTheSleepTimer = NULL;
1130 }
1131
1132 // Consume all events until no more left
1133 void wxFlushEvents()
1134 {
1135 //  wxYield();
1136 }
1137
1138 #endif // wxUSE_TIMER
1139
1140 #elif defined(__WIN32__) // wxUSE_GUI
1141
1142 void wxUsleep(unsigned long milliseconds)
1143 {
1144     ::Sleep(milliseconds);
1145 }
1146
1147 void wxSleep(int nSecs)
1148 {
1149     wxUsleep(1000*nSecs);
1150 }
1151
1152 #endif // wxUSE_GUI/!wxUSE_GUI
1153 #endif // __WXMICROWIN__
1154
1155 // ----------------------------------------------------------------------------
1156 // deprecated (in favour of wxLog) log functions
1157 // ----------------------------------------------------------------------------
1158
1159 #if WXWIN_COMPATIBILITY_2_2
1160
1161 // Output a debug mess., in a system dependent fashion.
1162 #ifndef __WXMICROWIN__
1163 void wxDebugMsg(const wxChar *fmt ...)
1164 {
1165   va_list ap;
1166   static wxChar buffer[512];
1167
1168   if (!wxTheApp->GetWantDebugOutput())
1169     return;
1170
1171   va_start(ap, fmt);
1172
1173   wvsprintf(buffer,fmt,ap);
1174   OutputDebugString((LPCTSTR)buffer);
1175
1176   va_end(ap);
1177 }
1178
1179 // Non-fatal error: pop up message box and (possibly) continue
1180 void wxError(const wxString& msg, const wxString& title)
1181 {
1182   wxSprintf(wxBuffer, wxT("%s\nContinue?"), WXSTRINGCAST msg);
1183   if (MessageBox(NULL, (LPCTSTR)wxBuffer, (LPCTSTR)WXSTRINGCAST title,
1184              MB_ICONSTOP | MB_YESNO) == IDNO)
1185     wxExit();
1186 }
1187
1188 // Fatal error: pop up message box and abort
1189 void wxFatalError(const wxString& msg, const wxString& title)
1190 {
1191   wxSprintf(wxBuffer, wxT("%s: %s"), WXSTRINGCAST title, WXSTRINGCAST msg);
1192   FatalAppExit(0, (LPCTSTR)wxBuffer);
1193 }
1194 #endif // __WXMICROWIN__
1195
1196 #endif // WXWIN_COMPATIBILITY_2_2
1197
1198 #if wxUSE_GUI
1199
1200 // ----------------------------------------------------------------------------
1201 // functions to work with .INI files
1202 // ----------------------------------------------------------------------------
1203
1204 // Reading and writing resources (eg WIN.INI, .Xdefaults)
1205 #if wxUSE_RESOURCES
1206 bool wxWriteResource(const wxString& section, const wxString& entry, const wxString& value, const wxString& file)
1207 {
1208   if (file != wxT(""))
1209 // Don't know what the correct cast should be, but it doesn't
1210 // compile in BC++/16-bit without this cast.
1211 #if !defined(__WIN32__)
1212     return (WritePrivateProfileString((const char*) section, (const char*) entry, (const char*) value, (const char*) file) != 0);
1213 #else
1214     return (WritePrivateProfileString((LPCTSTR)WXSTRINGCAST section, (LPCTSTR)WXSTRINGCAST entry, (LPCTSTR)value, (LPCTSTR)WXSTRINGCAST file) != 0);
1215 #endif
1216   else
1217     return (WriteProfileString((LPCTSTR)WXSTRINGCAST section, (LPCTSTR)WXSTRINGCAST entry, (LPCTSTR)WXSTRINGCAST value) != 0);
1218 }
1219
1220 bool wxWriteResource(const wxString& section, const wxString& entry, float value, const wxString& file)
1221 {
1222     wxString buf;
1223     buf.Printf(wxT("%.4f"), value);
1224
1225     return wxWriteResource(section, entry, buf, file);
1226 }
1227
1228 bool wxWriteResource(const wxString& section, const wxString& entry, long value, const wxString& file)
1229 {
1230     wxString buf;
1231     buf.Printf(wxT("%ld"), value);
1232
1233     return wxWriteResource(section, entry, buf, file);
1234 }
1235
1236 bool wxWriteResource(const wxString& section, const wxString& entry, int value, const wxString& file)
1237 {
1238     wxString buf;
1239     buf.Printf(wxT("%d"), value);
1240
1241     return wxWriteResource(section, entry, buf, file);
1242 }
1243
1244 bool wxGetResource(const wxString& section, const wxString& entry, wxChar **value, const wxString& file)
1245 {
1246     static const wxChar defunkt[] = wxT("$$default");
1247     if (file != wxT(""))
1248     {
1249         int n = GetPrivateProfileString((LPCTSTR)WXSTRINGCAST section, (LPCTSTR)WXSTRINGCAST entry, (LPCTSTR)defunkt,
1250                 (LPTSTR)wxBuffer, 1000, (LPCTSTR)WXSTRINGCAST file);
1251         if (n == 0 || wxStrcmp(wxBuffer, defunkt) == 0)
1252             return FALSE;
1253     }
1254     else
1255     {
1256         int n = GetProfileString((LPCTSTR)WXSTRINGCAST section, (LPCTSTR)WXSTRINGCAST entry, (LPCTSTR)defunkt,
1257                 (LPTSTR)wxBuffer, 1000);
1258         if (n == 0 || wxStrcmp(wxBuffer, defunkt) == 0)
1259             return FALSE;
1260     }
1261     if (*value) delete[] (*value);
1262     *value = copystring(wxBuffer);
1263     return TRUE;
1264 }
1265
1266 bool wxGetResource(const wxString& section, const wxString& entry, float *value, const wxString& file)
1267 {
1268     wxChar *s = NULL;
1269     bool succ = wxGetResource(section, entry, (wxChar **)&s, file);
1270     if (succ)
1271     {
1272         *value = (float)wxStrtod(s, NULL);
1273         delete[] s;
1274         return TRUE;
1275     }
1276     else return FALSE;
1277 }
1278
1279 bool wxGetResource(const wxString& section, const wxString& entry, long *value, const wxString& file)
1280 {
1281     wxChar *s = NULL;
1282     bool succ = wxGetResource(section, entry, (wxChar **)&s, file);
1283     if (succ)
1284     {
1285         *value = wxStrtol(s, NULL, 10);
1286         delete[] s;
1287         return TRUE;
1288     }
1289     else return FALSE;
1290 }
1291
1292 bool wxGetResource(const wxString& section, const wxString& entry, int *value, const wxString& file)
1293 {
1294     wxChar *s = NULL;
1295     bool succ = wxGetResource(section, entry, (wxChar **)&s, file);
1296     if (succ)
1297     {
1298         *value = (int)wxStrtol(s, NULL, 10);
1299         delete[] s;
1300         return TRUE;
1301     }
1302     else return FALSE;
1303 }
1304 #endif // wxUSE_RESOURCES
1305
1306 // ---------------------------------------------------------------------------
1307 // helper functions for showing a "busy" cursor
1308 // ---------------------------------------------------------------------------
1309
1310 static HCURSOR gs_wxBusyCursor = 0;     // new, busy cursor
1311 static HCURSOR gs_wxBusyCursorOld = 0;  // old cursor
1312 static int gs_wxBusyCursorCount = 0;
1313
1314 extern HCURSOR wxGetCurrentBusyCursor()
1315 {
1316     return gs_wxBusyCursor;
1317 }
1318
1319 // Set the cursor to the busy cursor for all windows
1320 void wxBeginBusyCursor(wxCursor *cursor)
1321 {
1322     if ( gs_wxBusyCursorCount++ == 0 )
1323     {
1324         gs_wxBusyCursor = (HCURSOR)cursor->GetHCURSOR();
1325 #ifndef __WXMICROWIN__
1326         gs_wxBusyCursorOld = ::SetCursor(gs_wxBusyCursor);
1327 #endif
1328     }
1329     //else: nothing to do, already set
1330 }
1331
1332 // Restore cursor to normal
1333 void wxEndBusyCursor()
1334 {
1335     wxCHECK_RET( gs_wxBusyCursorCount > 0,
1336                  wxT("no matching wxBeginBusyCursor() for wxEndBusyCursor()") );
1337
1338     if ( --gs_wxBusyCursorCount == 0 )
1339     {
1340 #ifndef __WXMICROWIN__
1341         ::SetCursor(gs_wxBusyCursorOld);
1342 #endif
1343         gs_wxBusyCursorOld = 0;
1344     }
1345 }
1346
1347 // TRUE if we're between the above two calls
1348 bool wxIsBusy()
1349 {
1350   return gs_wxBusyCursorCount > 0;
1351 }
1352
1353 // Check whether this window wants to process messages, e.g. Stop button
1354 // in long calculations.
1355 bool wxCheckForInterrupt(wxWindow *wnd)
1356 {
1357     wxCHECK( wnd, FALSE );
1358
1359     MSG msg;
1360     while ( ::PeekMessage(&msg, GetHwndOf(wnd), 0, 0, PM_REMOVE) )
1361     {
1362         ::TranslateMessage(&msg);
1363         ::DispatchMessage(&msg);
1364     }
1365
1366     return TRUE;
1367 }
1368
1369 // MSW only: get user-defined resource from the .res file.
1370 // Returns NULL or newly-allocated memory, so use delete[] to clean up.
1371
1372 #ifndef __WXMICROWIN__
1373 wxChar *wxLoadUserResource(const wxString& resourceName, const wxString& resourceType)
1374 {
1375     HRSRC hResource = ::FindResource(wxGetInstance(), resourceName, resourceType);
1376     if ( hResource == 0 )
1377         return NULL;
1378
1379     HGLOBAL hData = ::LoadResource(wxGetInstance(), hResource);
1380     if ( hData == 0 )
1381         return NULL;
1382
1383     wxChar *theText = (wxChar *)::LockResource(hData);
1384     if ( !theText )
1385         return NULL;
1386
1387     // Not all compilers put a zero at the end of the resource (e.g. BC++ doesn't).
1388     // so we need to find the length of the resource.
1389     int len = ::SizeofResource(wxGetInstance(), hResource);
1390     wxChar  *s = new wxChar[len+1];
1391     wxStrncpy(s,theText,len);
1392     s[len]=0;
1393
1394     // wxChar *s = copystring(theText);
1395
1396     // Obsolete in WIN32
1397 #ifndef __WIN32__
1398     UnlockResource(hData);
1399 #endif
1400
1401     // No need??
1402     //  GlobalFree(hData);
1403
1404     return s;
1405 }
1406 #endif // __WXMICROWIN__
1407
1408 // ----------------------------------------------------------------------------
1409 // get display info
1410 // ----------------------------------------------------------------------------
1411
1412 // See also the wxGetMousePosition in window.cpp
1413 // Deprecated: use wxPoint wxGetMousePosition() instead
1414 void wxGetMousePosition( int* x, int* y )
1415 {
1416     POINT pt;
1417     GetCursorPos( & pt );
1418     if ( x ) *x = pt.x;
1419     if ( y ) *y = pt.y;
1420 };
1421
1422 // Return TRUE if we have a colour display
1423 bool wxColourDisplay()
1424 {
1425 #ifdef __WXMICROWIN__
1426     // MICROWIN_TODO
1427     return TRUE;
1428 #else
1429     // this function is called from wxDC ctor so it is called a *lot* of times
1430     // hence we optimize it a bit but doign the check only once
1431     //
1432     // this should be MT safe as only the GUI thread (holding the GUI mutex)
1433     // can call us
1434     static int s_isColour = -1;
1435
1436     if ( s_isColour == -1 )
1437     {
1438         ScreenHDC dc;
1439         int noCols = ::GetDeviceCaps(dc, NUMCOLORS);
1440
1441         s_isColour = (noCols == -1) || (noCols > 2);
1442     }
1443
1444     return s_isColour != 0;
1445 #endif
1446 }
1447
1448 // Returns depth of screen
1449 int wxDisplayDepth()
1450 {
1451     ScreenHDC dc;
1452     return GetDeviceCaps(dc, PLANES) * GetDeviceCaps(dc, BITSPIXEL);
1453 }
1454
1455 // Get size of display
1456 void wxDisplaySize(int *width, int *height)
1457 {
1458 #ifdef __WXMICROWIN__
1459     RECT rect;
1460     HWND hWnd = GetDesktopWindow();
1461     ::GetWindowRect(hWnd, & rect);
1462
1463     if ( width )
1464         *width = rect.right - rect.left;
1465     if ( height )
1466         *height = rect.bottom - rect.top;
1467 #else // !__WXMICROWIN__
1468     ScreenHDC dc;
1469
1470     if ( width )
1471         *width = ::GetDeviceCaps(dc, HORZRES);
1472     if ( height )
1473         *height = ::GetDeviceCaps(dc, VERTRES);
1474 #endif // __WXMICROWIN__/!__WXMICROWIN__
1475 }
1476
1477 void wxDisplaySizeMM(int *width, int *height)
1478 {
1479 #ifdef __WXMICROWIN__
1480     // MICROWIN_TODO
1481     if ( width )
1482         *width = 0;
1483     if ( height )
1484         *height = 0;
1485 #else
1486     ScreenHDC dc;
1487
1488     if ( width )
1489         *width = ::GetDeviceCaps(dc, HORZSIZE);
1490     if ( height )
1491         *height = ::GetDeviceCaps(dc, VERTSIZE);
1492 #endif
1493 }
1494
1495 void wxClientDisplayRect(int *x, int *y, int *width, int *height)
1496 {
1497 #if defined(__WIN16__) || defined(__WXMICROWIN__)
1498     *x = 0; *y = 0;
1499     wxDisplaySize(width, height);
1500 #else
1501     // Determine the desktop dimensions minus the taskbar and any other
1502     // special decorations...
1503     RECT r;
1504
1505     SystemParametersInfo(SPI_GETWORKAREA, 0, &r, 0);
1506     if (x)      *x = r.left;
1507     if (y)      *y = r.top;
1508     if (width)  *width = r.right - r.left;
1509     if (height) *height = r.bottom - r.top;
1510 #endif
1511 }
1512
1513 // ---------------------------------------------------------------------------
1514 // window information functions
1515 // ---------------------------------------------------------------------------
1516
1517 wxString WXDLLEXPORT wxGetWindowText(WXHWND hWnd)
1518 {
1519     wxString str;
1520
1521     if ( hWnd )
1522     {
1523         int len = GetWindowTextLength((HWND)hWnd) + 1;
1524         ::GetWindowText((HWND)hWnd, str.GetWriteBuf(len), len);
1525         str.UngetWriteBuf();
1526     }
1527
1528     return str;
1529 }
1530
1531 wxString WXDLLEXPORT wxGetWindowClass(WXHWND hWnd)
1532 {
1533     wxString str;
1534
1535     // MICROWIN_TODO
1536 #ifndef __WXMICROWIN__
1537     if ( hWnd )
1538     {
1539         int len = 256; // some starting value
1540
1541         for ( ;; )
1542         {
1543             int count = ::GetClassName((HWND)hWnd, str.GetWriteBuf(len), len);
1544
1545             str.UngetWriteBuf();
1546             if ( count == len )
1547             {
1548                 // the class name might have been truncated, retry with larger
1549                 // buffer
1550                 len *= 2;
1551             }
1552             else
1553             {
1554                 break;
1555             }
1556         }
1557     }
1558 #endif // !__WXMICROWIN__
1559
1560     return str;
1561 }
1562
1563 WXWORD WXDLLEXPORT wxGetWindowId(WXHWND hWnd)
1564 {
1565 #ifndef __WIN32__
1566     return (WXWORD)GetWindowWord((HWND)hWnd, GWW_ID);
1567 #else // Win32
1568     return (WXWORD)GetWindowLong((HWND)hWnd, GWL_ID);
1569 #endif // Win16/32
1570 }
1571
1572 // ----------------------------------------------------------------------------
1573 // Metafile helpers
1574 // ----------------------------------------------------------------------------
1575
1576 extern void PixelToHIMETRIC(LONG *x, LONG *y)
1577 {
1578     ScreenHDC hdcRef;
1579
1580     int iWidthMM = GetDeviceCaps(hdcRef, HORZSIZE),
1581         iHeightMM = GetDeviceCaps(hdcRef, VERTSIZE),
1582         iWidthPels = GetDeviceCaps(hdcRef, HORZRES),
1583         iHeightPels = GetDeviceCaps(hdcRef, VERTRES);
1584
1585     *x *= (iWidthMM * 100);
1586     *x /= iWidthPels;
1587     *y *= (iHeightMM * 100);
1588     *y /= iHeightPels;
1589 }
1590
1591 extern void HIMETRICToPixel(LONG *x, LONG *y)
1592 {
1593     ScreenHDC hdcRef;
1594
1595     int iWidthMM = GetDeviceCaps(hdcRef, HORZSIZE),
1596         iHeightMM = GetDeviceCaps(hdcRef, VERTSIZE),
1597         iWidthPels = GetDeviceCaps(hdcRef, HORZRES),
1598         iHeightPels = GetDeviceCaps(hdcRef, VERTRES);
1599
1600     *x *= iWidthPels;
1601     *x /= (iWidthMM * 100);
1602     *y *= iHeightPels;
1603     *y /= (iHeightMM * 100);
1604 }
1605
1606 #endif // wxUSE_GUI
1607
1608 #ifdef __WXMICROWIN__
1609 int wxGetOsVersion(int *majorVsn, int *minorVsn)
1610 {
1611     // MICROWIN_TODO
1612     if (majorVsn) *majorVsn = 0;
1613     if (minorVsn) *minorVsn = 0;
1614     return wxUNIX;
1615 }
1616 #endif // __WXMICROWIN__
1617
1618 // ----------------------------------------------------------------------------
1619 // Win32 codepage conversion functions
1620 // ----------------------------------------------------------------------------
1621
1622 #if defined(__WIN32__) && !defined(__WXMICROWIN__)
1623
1624 // wxGetNativeFontEncoding() doesn't exist neither in wxBase nor in wxUniv
1625 #if wxUSE_GUI && !defined(__WXUNIVERSAL__)
1626
1627 #include "wx/fontmap.h"
1628
1629 // VZ: the new version of wxCharsetToCodepage() is more politically correct
1630 //     and should work on other Windows versions as well but the old version is
1631 //     still needed for !wxUSE_FONTMAP || !wxUSE_GUI case
1632
1633 extern long wxEncodingToCodepage(wxFontEncoding encoding)
1634 {
1635     // translate encoding into the Windows CHARSET
1636     wxNativeEncodingInfo natveEncInfo;
1637     if ( !wxGetNativeFontEncoding(encoding, &natveEncInfo) )
1638         return -1;
1639
1640     // translate CHARSET to code page
1641     CHARSETINFO csetInfo;
1642     if ( !::TranslateCharsetInfo((DWORD *)(DWORD)natveEncInfo.charset,
1643                                  &csetInfo,
1644                                  TCI_SRCCHARSET) )
1645     {
1646         wxLogLastError(_T("TranslateCharsetInfo(TCI_SRCCHARSET)"));
1647
1648         return -1;
1649     }
1650
1651     return csetInfo.ciACP;
1652 }
1653
1654 #if wxUSE_FONTMAP
1655
1656 extern long wxCharsetToCodepage(const wxChar *name)
1657 {
1658     // first get the font encoding for this charset
1659     if ( !name )
1660         return -1;
1661
1662     wxFontEncoding enc = wxFontMapper::Get()->CharsetToEncoding(name, FALSE);
1663     if ( enc == wxFONTENCODING_SYSTEM )
1664         return -1;
1665
1666     // the use the helper function
1667     return wxEncodingToCodepage(enc);
1668 }
1669
1670 #endif // wxUSE_FONTMAP
1671
1672 #endif // wxUSE_GUI
1673
1674 // include old wxCharsetToCodepage() by OK if needed
1675 #if !wxUSE_GUI || !wxUSE_FONTMAP
1676
1677 #include "wx/msw/registry.h"
1678
1679 // this should work if Internet Exploiter is installed
1680 extern long wxCharsetToCodepage(const wxChar *name)
1681 {
1682     if (!name)
1683         return GetACP();
1684
1685     long CP=-1;
1686
1687     wxString cn(name);
1688     do {
1689         wxString path(wxT("MIME\\Database\\Charset\\"));
1690         path += cn;
1691         wxRegKey key(wxRegKey::HKCR, path);
1692
1693         if (!key.Exists()) break;
1694
1695         // two cases: either there's an AliasForCharset string,
1696         // or there are Codepage and InternetEncoding dwords.
1697         // The InternetEncoding gives us the actual encoding,
1698         // the Codepage just says which Windows character set to
1699         // use when displaying the data.
1700         if (key.HasValue(wxT("InternetEncoding")) &&
1701             key.QueryValue(wxT("InternetEncoding"), &CP)) break;
1702
1703         // no encoding, see if it's an alias
1704         if (!key.HasValue(wxT("AliasForCharset")) ||
1705             !key.QueryValue(wxT("AliasForCharset"), cn)) break;
1706     } while (1);
1707
1708     return CP;
1709 }
1710
1711 #endif // !wxUSE_GUI || !wxUSE_FONTMAP
1712
1713 #endif // Win32
1714