src/msw/utils.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        msw/utils.cpp
   3 // Purpose:     Various utilities
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21 // #pragma implementation "utils.h"   // Note: this is done in utilscmn.cpp now.
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/utils.h"
  33     #include "wx/app.h"
  34     #include "wx/intl.h"
  35     #include "wx/log.h"
  36 #if wxUSE_GUI
  37     #include "wx/cursor.h"
  38 #endif
  39 #endif  //WX_PRECOMP
  40
  41 #include "wx/msw/private.h"     // includes <windows.h>
  42
  43 #ifdef __GNUWIN32_OLD__
  44     // apparently we need to include winsock.h to get WSADATA and other stuff
  45     // used in wxGetFullHostName() with the old mingw32 versions
  46     #include <winsock.h>
  47 #endif
  48
  49 #include "wx/timer.h"
  50
  51 #if !defined(__GNUWIN32__) && !defined(__WXWINE__) && !defined(__SALFORDC__) && !defined(__WXMICROWIN__)
  52     #include <direct.h>
  53
  54     #ifndef __MWERKS__
  55         #include <dos.h>
  56     #endif
  57 #endif  //GNUWIN32
  58
  59 #if defined(__CYGWIN__) && !defined(__TWIN32__)
  60     #include <sys/unistd.h>
  61     #include <sys/stat.h>
  62     #include <sys/cygwin.h> // for cygwin_conv_to_full_win32_path()
  63 #endif  //GNUWIN32
  64
  65 #ifdef __BORLANDC__ // Please someone tell me which version of Borland needs
  66                     // this (3.1 I believe) and how to test for it.
  67                     // If this works for Borland 4.0 as well, then no worries.
  68     #include <dir.h>
  69 #endif
  70
  71 // VZ: there is some code using NetXXX() functions to get the full user name:
  72 //     I don't think it's a good idea because they don't work under Win95 and
  73 //     seem to return the same as wxGetUserId() under NT. If you really want
  74 //     to use them, just #define USE_NET_API
  75 #undef USE_NET_API
  76
  77 #ifdef USE_NET_API
  78     #include <lm.h>
  79 #endif // USE_NET_API
  80
  81 #if defined(__WIN32__) && !defined(__WXWINE__) && !defined(__WXMICROWIN__)
  82     #include <io.h>
  83
  84     #ifndef __GNUWIN32__
  85         #include <shellapi.h>
  86     #endif
  87 #endif
  88
  89 #ifndef __WATCOMC__
  90     #if !(defined(_MSC_VER) && (_MSC_VER > 800))
  91         #include <errno.h>
  92     #endif
  93 #endif
  94
  95 //// BEGIN for console support: VC++ only
  96 #ifdef __VISUALC__
  97
  98 #include "wx/msw/msvcrt.h"
  99
 100 #include <fcntl.h>
 101
 102 #include "wx/ioswrap.h"
 103
 104 /* Need to undef new if including crtdbg.h */
 105 #  ifdef new
 106 #  undef new
 107 #  endif
 108
 109 #ifndef __WIN16__
 110 #  include <crtdbg.h>
 111 #endif
 112
 113 #  if defined(__WXDEBUG__) && wxUSE_GLOBAL_MEMORY_OPERATORS && wxUSE_DEBUG_NEW_ALWAYS
 114 #  define new new(__TFILE__,__LINE__)
 115 #  endif
 116
 117 #endif
 118   // __VISUALC__
 119 /// END for console support
 120
 121 // ----------------------------------------------------------------------------
 122 // constants
 123 // ----------------------------------------------------------------------------
 124
 125 // In the WIN.INI file
 126 static const wxChar WX_SECTION[] = wxT("wxWindows");
 127 static const wxChar eUSERNAME[]  = wxT("UserName");
 128
 129 // these are only used under Win16
 130 #if !defined(__WIN32__) && !defined(__WXMICROWIN__)
 131 static const wxChar eHOSTNAME[]  = wxT("HostName");
 132 static const wxChar eUSERID[]    = wxT("UserId");
 133 #endif // !Win32
 134
 135 #ifndef __WXMICROWIN__
 136
 137 // ============================================================================
 138 // implementation
 139 // ============================================================================
 140
 141 // ----------------------------------------------------------------------------
 142 // get host name and related
 143 // ----------------------------------------------------------------------------
 144
 145 // Get hostname only (without domain name)
 146 bool wxGetHostName(wxChar *buf, int maxSize)
 147 {
 148 #if defined(__WIN32__) && !defined(__TWIN32__) && !defined(__WXMICROWIN__)
 149     DWORD nSize = maxSize;
 150     if ( !::GetComputerName(buf, &nSize) )
 151     {
 152         wxLogLastError(wxT("GetComputerName"));
 153
 154         return FALSE;
 155     }
 156
 157     return TRUE;
 158 #else
 159     wxChar *sysname;
 160     const wxChar *default_host = wxT("noname");
 161
 162     if ((sysname = wxGetenv(wxT("SYSTEM_NAME"))) == NULL) {
 163         GetProfileString(WX_SECTION, eHOSTNAME, default_host, buf, maxSize - 1);
 164     } else
 165         wxStrncpy(buf, sysname, maxSize - 1);
 166     buf[maxSize] = wxT('\0');
 167     return *buf ? TRUE : FALSE;
 168 #endif
 169 }
 170
 171 // get full hostname (with domain name if possible)
 172 bool wxGetFullHostName(wxChar *buf, int maxSize)
 173 {
 174 #if defined(__WIN32__) && !defined(__TWIN32__) && !defined(__WXMICROWIN__) && ! (defined(__GNUWIN32__) && !defined(__MINGW32__))
 175     // TODO should use GetComputerNameEx() when available
 176
 177     // the idea is that if someone had set wxUSE_SOCKETS to 0 the code
 178     // shouldn't use winsock.dll (a.k.a. ws2_32.dll) at all so only use this
 179     // code if we link with it anyhow
 180 #if wxUSE_SOCKETS
 181     WSADATA wsa;
 182     if ( WSAStartup(MAKEWORD(1, 1), &wsa) == 0 )
 183     {
 184         wxString host;
 185         char bufA[256];
 186         if ( gethostname(bufA, WXSIZEOF(bufA)) == 0 )
 187         {
 188             // gethostname() won't usually include the DNS domain name, for
 189             // this we need to work a bit more
 190             if ( !strchr(bufA, '.') )
 191             {
 192                 struct hostent *pHostEnt =  gethostbyname(bufA);
 193
 194                 if ( pHostEnt )
 195                 {
 196                     // Windows will use DNS internally now
 197                     pHostEnt = gethostbyaddr(pHostEnt->h_addr, 4, AF_INET);
 198                 }
 199
 200                 if ( pHostEnt )
 201                 {
 202                     host = wxString::FromAscii(pHostEnt->h_name);
 203                 }
 204             }
 205         }
 206
 207         WSACleanup();
 208
 209         if ( !host.empty() )
 210         {
 211             wxStrncpy(buf, host, maxSize);
 212
 213             return TRUE;
 214         }
 215     }
 216 #endif // wxUSE_SOCKETS
 217
 218 #endif // Win32
 219
 220     return wxGetHostName(buf, maxSize);
 221 }
 222
 223 // Get user ID e.g. jacs
 224 bool wxGetUserId(wxChar *buf, int maxSize)
 225 {
 226 #if defined(__WIN32__) && !defined(__win32s__) && !defined(__TWIN32__) && !defined(__WXMICROWIN__)
 227     DWORD nSize = maxSize;
 228     if ( ::GetUserName(buf, &nSize) == 0 )
 229     {
 230         // actually, it does happen on Win9x if the user didn't log on
 231         DWORD res = ::GetEnvironmentVariable(wxT("username"), buf, maxSize);
 232         if ( res == 0 )
 233         {
 234             // not found
 235             return FALSE;
 236         }
 237     }
 238
 239     return TRUE;
 240 #else   // Win16 or Win32s
 241     wxChar *user;
 242     const wxChar *default_id = wxT("anonymous");
 243
 244     // Can't assume we have NIS (PC-NFS) or some other ID daemon
 245     // So we ...
 246     if (  (user = wxGetenv(wxT("USER"))) == NULL &&
 247             (user = wxGetenv(wxT("LOGNAME"))) == NULL )
 248     {
 249         // Use wxWindows configuration data (comming soon)
 250         GetProfileString(WX_SECTION, eUSERID, default_id, buf, maxSize - 1);
 251     }
 252     else
 253     {
 254         wxStrncpy(buf, user, maxSize - 1);
 255     }
 256
 257     return *buf ? TRUE : FALSE;
 258 #endif
 259 }
 260
 261 // Get user name e.g. Julian Smart
 262 bool wxGetUserName(wxChar *buf, int maxSize)
 263 {
 264 #if wxUSE_PENWINDOWS && !defined(__WATCOMC__) && !defined(__GNUWIN32__)
 265     extern HANDLE g_hPenWin; // PenWindows Running?
 266     if (g_hPenWin)
 267     {
 268         // PenWindows Does have a user concept!
 269         // Get the current owner of the recognizer
 270         GetPrivateProfileString("Current", "User", default_name, wxBuffer, maxSize - 1, "PENWIN.INI");
 271         strncpy(buf, wxBuffer, maxSize - 1);
 272     }
 273     else
 274 #endif
 275     {
 276 #ifdef USE_NET_API
 277         CHAR szUserName[256];
 278         if ( !wxGetUserId(szUserName, WXSIZEOF(szUserName)) )
 279             return FALSE;
 280
 281         // TODO how to get the domain name?
 282         CHAR *szDomain = "";
 283
 284         // the code is based on the MSDN example (also see KB article Q119670)
 285         WCHAR wszUserName[256];          // Unicode user name
 286         WCHAR wszDomain[256];
 287         LPBYTE ComputerName;
 288
 289         USER_INFO_2 *ui2;         // User structure
 290
 291         // Convert ANSI user name and domain to Unicode
 292         MultiByteToWideChar( CP_ACP, 0, szUserName, strlen(szUserName)+1,
 293                 wszUserName, WXSIZEOF(wszUserName) );
 294         MultiByteToWideChar( CP_ACP, 0, szDomain, strlen(szDomain)+1,
 295                 wszDomain, WXSIZEOF(wszDomain) );
 296
 297         // Get the computer name of a DC for the domain.
 298         if ( NetGetDCName( NULL, wszDomain, &ComputerName ) != NERR_Success )
 299         {
 300             wxLogError(wxT("Can not find domain controller"));
 301
 302             goto error;
 303         }
 304
 305         // Look up the user on the DC
 306         NET_API_STATUS status = NetUserGetInfo( (LPWSTR)ComputerName,
 307                 (LPWSTR)&wszUserName,
 308                 2, // level - we want USER_INFO_2
 309                 (LPBYTE *) &ui2 );
 310         switch ( status )
 311         {
 312             case NERR_Success:
 313                 // ok
 314                 break;
 315
 316             case NERR_InvalidComputer:
 317                 wxLogError(wxT("Invalid domain controller name."));
 318
 319                 goto error;
 320
 321             case NERR_UserNotFound:
 322                 wxLogError(wxT("Invalid user name '%s'."), szUserName);
 323
 324                 goto error;
 325
 326             default:
 327                 wxLogSysError(wxT("Can't get information about user"));
 328
 329                 goto error;
 330         }
 331
 332         // Convert the Unicode full name to ANSI
 333         WideCharToMultiByte( CP_ACP, 0, ui2->usri2_full_name, -1,
 334                 buf, maxSize, NULL, NULL );
 335
 336         return TRUE;
 337
 338 error:
 339         wxLogError(wxT("Couldn't look up full user name."));
 340
 341         return FALSE;
 342 #else  // !USE_NET_API
 343         // Could use NIS, MS-Mail or other site specific programs
 344         // Use wxWindows configuration data
 345         bool ok = GetProfileString(WX_SECTION, eUSERNAME, wxT(""), buf, maxSize - 1) != 0;
 346         if ( !ok )
 347         {
 348             ok = wxGetUserId(buf, maxSize);
 349         }
 350
 351         if ( !ok )
 352         {
 353             wxStrncpy(buf, wxT("Unknown User"), maxSize);
 354         }
 355 #endif // Win32/16
 356     }
 357
 358     return TRUE;
 359 }
 360
 361 const wxChar* wxGetHomeDir(wxString *pstr)
 362 {
 363   wxString& strDir = *pstr;
 364
 365   #if defined(__UNIX__) && !defined(__TWIN32__)
 366     const wxChar *szHome = wxGetenv("HOME");
 367     if ( szHome == NULL ) {
 368       // we're homeless...
 369       wxLogWarning(_("can't find user's HOME, using current directory."));
 370       strDir = wxT(".");
 371     }
 372     else
 373        strDir = szHome;
 374
 375     // add a trailing slash if needed
 376     if ( strDir.Last() != wxT('/') )
 377       strDir << wxT('/');
 378
 379     #ifdef __CYGWIN__
 380       // Cygwin returns unix type path but that does not work well
 381       static wxChar windowsPath[MAX_PATH];
 382       cygwin_conv_to_full_win32_path(strDir, windowsPath);
 383       strDir = windowsPath;
 384     #endif
 385   #else   // Windows
 386     #ifdef  __WIN32__
 387       strDir.clear();
 388
 389       // If we have a valid HOME directory, as is used on many machines that
 390       // have unix utilities on them, we should use that.
 391       const wxChar *szHome = wxGetenv(wxT("HOME"));
 392
 393       if ( szHome != NULL )
 394       {
 395         strDir = szHome;
 396       }
 397       else // no HOME, try HOMEDRIVE/PATH
 398       {
 399           szHome = wxGetenv(wxT("HOMEDRIVE"));
 400           if ( szHome != NULL )
 401             strDir << szHome;
 402           szHome = wxGetenv(wxT("HOMEPATH"));
 403
 404           if ( szHome != NULL )
 405           {
 406             strDir << szHome;
 407
 408             // the idea is that under NT these variables have default values
 409             // of "%systemdrive%:" and "\\". As we don't want to create our
 410             // config files in the root directory of the system drive, we will
 411             // create it in our program's dir. However, if the user took care
 412             // to set HOMEPATH to something other than "\\", we suppose that he
 413             // knows what he is doing and use the supplied value.
 414             if ( wxStrcmp(szHome, wxT("\\")) == 0 )
 415               strDir.clear();
 416           }
 417       }
 418
 419       if ( strDir.empty() )
 420       {
 421           // If we have a valid USERPROFILE directory, as is the case in
 422           // Windows NT, 2000 and XP, we should use that as our home directory.
 423           szHome = wxGetenv(wxT("USERPROFILE"));
 424
 425           if ( szHome != NULL )
 426             strDir = szHome;
 427       }
 428
 429       if ( !strDir.empty() )
 430       {
 431           return strDir.c_str();
 432       }
 433       //else: fall back to the prograrm directory
 434     #else   // Win16
 435       // Win16 has no idea about home, so use the executable directory instead
 436     #endif  // WIN16/32
 437
 438     // 260 was taken from windef.h
 439     #ifndef MAX_PATH
 440       #define MAX_PATH  260
 441     #endif
 442
 443     wxString strPath;
 444     ::GetModuleFileName(::GetModuleHandle(NULL),
 445                         strPath.GetWriteBuf(MAX_PATH), MAX_PATH);
 446     strPath.UngetWriteBuf();
 447
 448     // extract the dir name
 449     wxSplitPath(strPath, &strDir, NULL, NULL);
 450
 451   #endif  // UNIX/Win
 452
 453   return strDir.c_str();
 454 }
 455
 456 wxChar *wxGetUserHome(const wxString& WXUNUSED(user))
 457 {
 458     // VZ: the old code here never worked for user != "" anyhow! Moreover, it
 459     //     returned sometimes a malloc()'d pointer, sometimes a pointer to a
 460     //     static buffer and sometimes I don't even know what.
 461     static wxString s_home;
 462
 463     return (wxChar *)wxGetHomeDir(&s_home);
 464 }
 465
 466 bool wxDirExists(const wxString& dir)
 467 {
 468 #ifdef __WXMICROWIN__
 469     return wxPathExist(dir);
 470 #elif defined(__WIN32__)
 471     DWORD attribs = GetFileAttributes(dir);
 472     return ((attribs != (DWORD)-1) && (attribs & FILE_ATTRIBUTE_DIRECTORY));
 473 #else // Win16
 474     #ifdef __BORLANDC__
 475         struct ffblk fileInfo;
 476     #else
 477         struct find_t fileInfo;
 478     #endif
 479     // In Borland findfirst has a different argument
 480     // ordering from _dos_findfirst. But _dos_findfirst
 481     // _should_ be ok in both MS and Borland... why not?
 482     #ifdef __BORLANDC__
 483         return (findfirst(dir, &fileInfo, _A_SUBDIR) == 0 &&
 484                (fileInfo.ff_attrib & _A_SUBDIR) != 0);
 485     #else
 486         return (_dos_findfirst(dir, _A_SUBDIR, &fileInfo) == 0) &&
 487                ((fileInfo.attrib & _A_SUBDIR) != 0);
 488     #endif
 489 #endif // Win32/16
 490 }
 491
 492 bool wxGetDiskSpace(const wxString& path, wxLongLong *pTotal, wxLongLong *pFree)
 493 {
 494     if ( path.empty() )
 495         return FALSE;
 496
 497 // old w32api don't have ULARGE_INTEGER
 498 #if defined(__WIN32__) && \
 499     (!defined(__GNUWIN32__) || wxCHECK_W32API_VERSION( 0, 3 ))
 500     // GetDiskFreeSpaceEx() is not available under original Win95, check for
 501     // it
 502     typedef BOOL (WINAPI *GetDiskFreeSpaceEx_t)(LPCTSTR,
 503                                                 PULARGE_INTEGER,
 504                                                 PULARGE_INTEGER,
 505                                                 PULARGE_INTEGER);
 506
 507     GetDiskFreeSpaceEx_t
 508         pGetDiskFreeSpaceEx = (GetDiskFreeSpaceEx_t)::GetProcAddress
 509                               (
 510                                 ::GetModuleHandle(_T("kernel32.dll")),
 511 #if wxUSE_UNICODE
 512                                 "GetDiskFreeSpaceExW"
 513 #else
 514                                 "GetDiskFreeSpaceExA"
 515 #endif
 516                               );
 517
 518     if ( pGetDiskFreeSpaceEx )
 519     {
 520         ULARGE_INTEGER bytesFree, bytesTotal;
 521
 522         // may pass the path as is, GetDiskFreeSpaceEx() is smart enough
 523         if ( !pGetDiskFreeSpaceEx(path,
 524                                   &bytesFree,
 525                                   &bytesTotal,
 526                                   NULL) )
 527         {
 528             wxLogLastError(_T("GetDiskFreeSpaceEx"));
 529
 530             return FALSE;
 531         }
 532
 533         // ULARGE_INTEGER is a union of a 64 bit value and a struct containing
 534         // two 32 bit fields which may be or may be not named - try to make it
 535         // compile in all cases
 536 #if defined(__BORLANDC__) && !defined(_ANONYMOUS_STRUCT)
 537         #define UL(ul) ul.u
 538 #else // anon union
 539         #define UL(ul) ul
 540 #endif
 541         if ( pTotal )
 542         {
 543             *pTotal = wxLongLong(UL(bytesTotal).HighPart, UL(bytesTotal).LowPart);
 544         }
 545
 546         if ( pFree )
 547         {
 548             *pFree = wxLongLong(UL(bytesFree).HighPart, UL(bytesFree).LowPart);
 549         }
 550     }
 551     else
 552 #endif // Win32
 553     {
 554         // there's a problem with drives larger than 2GB, GetDiskFreeSpaceEx()
 555         // should be used instead - but if it's not available, fall back on
 556         // GetDiskFreeSpace() nevertheless...
 557
 558         DWORD lSectorsPerCluster,
 559               lBytesPerSector,
 560               lNumberOfFreeClusters,
 561               lTotalNumberOfClusters;
 562
 563         // FIXME: this is wrong, we should extract the root drive from path
 564         //        instead, but this is the job for wxFileName...
 565         if ( !::GetDiskFreeSpace(path,
 566                                  &lSectorsPerCluster,
 567                                  &lBytesPerSector,
 568                                  &lNumberOfFreeClusters,
 569                                  &lTotalNumberOfClusters) )
 570         {
 571             wxLogLastError(_T("GetDiskFreeSpace"));
 572
 573             return FALSE;
 574         }
 575
 576         wxLongLong lBytesPerCluster = lSectorsPerCluster;
 577         lBytesPerCluster *= lBytesPerSector;
 578
 579         if ( pTotal )
 580         {
 581             *pTotal = lBytesPerCluster;
 582             *pTotal *= lTotalNumberOfClusters;
 583         }
 584
 585         if ( pFree )
 586         {
 587             *pFree = lBytesPerCluster;
 588             *pFree *= lNumberOfFreeClusters;
 589         }
 590     }
 591
 592     return TRUE;
 593 }
 594
 595 // ----------------------------------------------------------------------------
 596 // env vars
 597 // ----------------------------------------------------------------------------
 598
 599 bool wxGetEnv(const wxString& var, wxString *value)
 600 {
 601 #ifdef __WIN16__
 602     const wxChar* ret = wxGetenv(var);
 603     if ( !ret )
 604         return FALSE;
 605
 606     if ( value )
 607     {
 608         *value = ret;
 609     }
 610
 611     return TRUE;
 612 #else // Win32
 613     // first get the size of the buffer
 614     DWORD dwRet = ::GetEnvironmentVariable(var, NULL, 0);
 615     if ( !dwRet )
 616     {
 617         // this means that there is no such variable
 618         return FALSE;
 619     }
 620
 621     if ( value )
 622     {
 623         (void)::GetEnvironmentVariable(var, value->GetWriteBuf(dwRet), dwRet);
 624         value->UngetWriteBuf();
 625     }
 626
 627     return TRUE;
 628 #endif // Win16/32
 629 }
 630
 631 bool wxSetEnv(const wxString& var, const wxChar *value)
 632 {
 633     // some compilers have putenv() or _putenv() or _wputenv() but it's better
 634     // to always use Win32 function directly instead of dealing with them
 635 #if defined(__WIN32__)
 636     if ( !::SetEnvironmentVariable(var, value) )
 637     {
 638         wxLogLastError(_T("SetEnvironmentVariable"));
 639
 640         return FALSE;
 641     }
 642
 643     return TRUE;
 644 #else // no way to set env vars
 645     return FALSE;
 646 #endif
 647 }
 648
 649 // ----------------------------------------------------------------------------
 650 // process management
 651 // ----------------------------------------------------------------------------
 652
 653 #ifdef __WIN32__
 654
 655 // structure used to pass parameters from wxKill() to wxEnumFindByPidProc()
 656 struct wxFindByPidParams
 657 {
 658     wxFindByPidParams() { hwnd = 0; pid = 0; }
 659
 660     // the HWND used to return the result
 661     HWND hwnd;
 662
 663     // the PID we're looking from
 664     DWORD pid;
 665 };
 666
 667 // wxKill helper: EnumWindows() callback which is used to find the first (top
 668 // level) window belonging to the given process
 669 BOOL CALLBACK wxEnumFindByPidProc(HWND hwnd, LPARAM lParam)
 670 {
 671     DWORD pid;
 672     (void)::GetWindowThreadProcessId(hwnd, &pid);
 673
 674     wxFindByPidParams *params = (wxFindByPidParams *)lParam;
 675     if ( pid == params->pid )
 676     {
 677         // remember the window we found
 678         params->hwnd = hwnd;
 679
 680         // return FALSE to stop the enumeration
 681         return FALSE;
 682     }
 683
 684     // continue enumeration
 685     return TRUE;
 686 }
 687
 688 #endif // __WIN32__
 689
 690 int wxKill(long pid, wxSignal sig, wxKillError *krc)
 691 {
 692 #ifdef __WIN32__
 693     // get the process handle to operate on
 694     HANDLE hProcess = ::OpenProcess(SYNCHRONIZE |
 695                                     PROCESS_TERMINATE |
 696                                     PROCESS_QUERY_INFORMATION,
 697                                     FALSE, // not inheritable
 698                                     (DWORD)pid);
 699     if ( hProcess == NULL )
 700     {
 701         if ( krc )
 702         {
 703             if ( ::GetLastError() == ERROR_ACCESS_DENIED )
 704             {
 705                 *krc = wxKILL_ACCESS_DENIED;
 706             }
 707             else
 708             {
 709                 *krc = wxKILL_NO_PROCESS;
 710             }
 711         }
 712
 713         return -1;
 714     }
 715
 716     bool ok = TRUE;
 717     switch ( sig )
 718     {
 719         case wxSIGKILL:
 720             // kill the process forcefully returning -1 as error code
 721             if ( !::TerminateProcess(hProcess, (UINT)-1) )
 722             {
 723                 wxLogSysError(_("Failed to kill process %d"), pid);
 724
 725                 if ( krc )
 726                 {
 727                     // this is not supposed to happen if we could open the
 728                     // process
 729                     *krc = wxKILL_ERROR;
 730                 }
 731
 732                 ok = FALSE;
 733             }
 734             break;
 735
 736         case wxSIGNONE:
 737             // do nothing, we just want to test for process existence
 738             break;
 739
 740         default:
 741             // any other signal means "terminate"
 742             {
 743                 wxFindByPidParams params;
 744                 params.pid = (DWORD)pid;
 745
 746                 // EnumWindows() has nice semantics: it returns 0 if it found
 747                 // something or if an error occured and non zero if it
 748                 // enumerated all the window
 749                 if ( !::EnumWindows(wxEnumFindByPidProc, (LPARAM)&params) )
 750                 {
 751                     // did we find any window?
 752                     if ( params.hwnd )
 753                     {
 754                         // tell the app to close
 755                         //
 756                         // NB: this is the harshest way, the app won't have
 757                         //     opportunity to save any files, for example, but
 758                         //     this is probably what we want here. If not we
 759                         //     can also use SendMesageTimeout(WM_CLOSE)
 760                         if ( !::PostMessage(params.hwnd, WM_QUIT, 0, 0) )
 761                         {
 762                             wxLogLastError(_T("PostMessage(WM_QUIT)"));
 763                         }
 764                     }
 765                     else // it was an error then
 766                     {
 767                         wxLogLastError(_T("EnumWindows"));
 768
 769                         ok = FALSE;
 770                     }
 771                 }
 772                 else // no windows for this PID
 773                 {
 774                     if ( krc )
 775                     {
 776                         *krc = wxKILL_ERROR;
 777                     }
 778
 779                     ok = FALSE;
 780                 }
 781             }
 782     }
 783
 784     // the return code
 785     DWORD rc;
 786
 787     if ( ok )
 788     {
 789         // as we wait for a short time, we can use just WaitForSingleObject()
 790         // and not MsgWaitForMultipleObjects()
 791         switch ( ::WaitForSingleObject(hProcess, 500 /* msec */) )
 792         {
 793             case WAIT_OBJECT_0:
 794                 // process terminated
 795                 if ( !::GetExitCodeProcess(hProcess, &rc) )
 796                 {
 797                     wxLogLastError(_T("GetExitCodeProcess"));
 798                 }
 799                 break;
 800
 801             default:
 802                 wxFAIL_MSG( _T("unexpected WaitForSingleObject() return") );
 803                 // fall through
 804
 805             case WAIT_FAILED:
 806                 wxLogLastError(_T("WaitForSingleObject"));
 807                 // fall through
 808
 809             case WAIT_TIMEOUT:
 810                 if ( krc )
 811                 {
 812                     *krc = wxKILL_ERROR;
 813                 }
 814
 815                 rc = STILL_ACTIVE;
 816                 break;
 817         }
 818     }
 819     else // !ok
 820     {
 821         // just to suppress the warnings about uninitialized variable
 822         rc = 0;
 823     }
 824
 825     ::CloseHandle(hProcess);
 826
 827     // the return code is the same as from Unix kill(): 0 if killed
 828     // successfully or -1 on error
 829     if ( sig == wxSIGNONE )
 830     {
 831         if ( ok && rc == STILL_ACTIVE )
 832         {
 833             // there is such process => success
 834             return 0;
 835         }
 836     }
 837     else // not SIGNONE
 838     {
 839         if ( ok && rc != STILL_ACTIVE )
 840         {
 841             // killed => success
 842             return 0;
 843         }
 844     }
 845 #else // Win16
 846     wxFAIL_MSG( _T("not implemented") );
 847 #endif // Win32/Win16
 848
 849     // error
 850     return -1;
 851 }
 852
 853 // Execute a program in an Interactive Shell
 854 bool wxShell(const wxString& command)
 855 {
 856     wxChar *shell = wxGetenv(wxT("COMSPEC"));
 857     if ( !shell )
 858         shell = (wxChar*) wxT("\\COMMAND.COM");
 859
 860     wxString cmd;
 861     if ( !command )
 862     {
 863         // just the shell
 864         cmd = shell;
 865     }
 866     else
 867     {
 868         // pass the command to execute to the command processor
 869         cmd.Printf(wxT("%s /c %s"), shell, command.c_str());
 870     }
 871
 872     return wxExecute(cmd, wxEXEC_SYNC) == 0;
 873 }
 874
 875 // Shutdown or reboot the PC
 876 bool wxShutdown(wxShutdownFlags wFlags)
 877 {
 878 #ifdef __WIN32__
 879     bool bOK = TRUE;
 880
 881     if ( wxGetOsVersion(NULL, NULL) == wxWINDOWS_NT ) // if is NT or 2K
 882     {
 883         // Get a token for this process.
 884         HANDLE hToken;
 885         bOK = ::OpenProcessToken(GetCurrentProcess(),
 886                                  TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY,
 887                                  &hToken) != 0;
 888 #ifndef __WXWINE__
 889         if ( bOK )
 890         {
 891             TOKEN_PRIVILEGES tkp;
 892
 893             // Get the LUID for the shutdown privilege.
 894             ::LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,
 895                                    &tkp.Privileges[0].Luid);
 896
 897             tkp.PrivilegeCount = 1;  // one privilege to set
 898             tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
 899
 900             // Get the shutdown privilege for this process.
 901             ::AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,
 902                                     (PTOKEN_PRIVILEGES)NULL, 0);
 903
 904             // Cannot test the return value of AdjustTokenPrivileges.
 905             bOK = ::GetLastError() == ERROR_SUCCESS;
 906         }
 907 #endif
 908     }
 909
 910     if ( bOK )
 911     {
 912         UINT flags = EWX_SHUTDOWN | EWX_FORCE;
 913         switch ( wFlags )
 914         {
 915             case wxSHUTDOWN_POWEROFF:
 916                 flags |= EWX_POWEROFF;
 917                 break;
 918
 919             case wxSHUTDOWN_REBOOT:
 920                 flags |= EWX_REBOOT;
 921                 break;
 922
 923             default:
 924                 wxFAIL_MSG( _T("unknown wxShutdown() flag") );
 925                 return FALSE;
 926         }
 927
 928         bOK = ::ExitWindowsEx(EWX_SHUTDOWN | EWX_FORCE | EWX_REBOOT, 0) != 0;
 929     }
 930
 931     return bOK;
 932 #else // Win16
 933     return FALSE;
 934 #endif // Win32/16
 935 }
 936
 937 // ----------------------------------------------------------------------------
 938 // misc
 939 // ----------------------------------------------------------------------------
 940
 941 // Get free memory in bytes, or -1 if cannot determine amount (e.g. on UNIX)
 942 long wxGetFreeMemory()
 943 {
 944 #if defined(__WIN32__) && !defined(__BORLANDC__) && !defined(__TWIN32__)
 945     MEMORYSTATUS memStatus;
 946     memStatus.dwLength = sizeof(MEMORYSTATUS);
 947     GlobalMemoryStatus(&memStatus);
 948     return memStatus.dwAvailPhys;
 949 #else
 950     return (long)GetFreeSpace(0);
 951 #endif
 952 }
 953
 954 unsigned long wxGetProcessId()
 955 {
 956 #ifdef __WIN32__
 957     return ::GetCurrentProcessId();
 958 #else
 959     return 0;
 960 #endif
 961 }
 962
 963 // Emit a beeeeeep
 964 void wxBell()
 965 {
 966     ::MessageBeep((UINT)-1);        // default sound
 967 }
 968
 969 wxString wxGetOsDescription()
 970 {
 971 #ifdef __WIN32__
 972     wxString str;
 973
 974     OSVERSIONINFO info;
 975     wxZeroMemory(info);
 976
 977     info.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
 978     if ( ::GetVersionEx(&info) )
 979     {
 980         switch ( info.dwPlatformId )
 981         {
 982             case VER_PLATFORM_WIN32s:
 983                 str = _("Win32s on Windows 3.1");
 984                 break;
 985
 986             case VER_PLATFORM_WIN32_WINDOWS:
 987                 str.Printf(_("Windows 9%c"),
 988                            info.dwMinorVersion == 0 ? _T('5') : _T('8'));
 989                 if ( !wxIsEmpty(info.szCSDVersion) )
 990                 {
 991                     str << _T(" (") << info.szCSDVersion << _T(')');
 992                 }
 993                 break;
 994
 995             case VER_PLATFORM_WIN32_NT:
 996                 str.Printf(_T("Windows NT %lu.%lu (build %lu"),
 997                            info.dwMajorVersion,
 998                            info.dwMinorVersion,
 999                            info.dwBuildNumber);
1000                 if ( !wxIsEmpty(info.szCSDVersion) )
1001                 {
1002                     str << _T(", ") << info.szCSDVersion;
1003                 }
1004                 str << _T(')');
1005                 break;
1006         }
1007     }
1008     else
1009     {
1010         wxFAIL_MSG( _T("GetVersionEx() failed") ); // should never happen
1011     }
1012
1013     return str;
1014 #else // Win16
1015     return _("Windows 3.1");
1016 #endif // Win32/16
1017 }
1018
1019 int wxGetOsVersion(int *majorVsn, int *minorVsn)
1020 {
1021 #if defined(__WIN32__) && !defined(__SC__)
1022     static int ver = -1, major = -1, minor = -1;
1023
1024     if ( ver == -1 )
1025     {
1026         OSVERSIONINFO info;
1027         wxZeroMemory(info);
1028
1029         ver = wxWINDOWS;
1030         info.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
1031         if ( ::GetVersionEx(&info) )
1032         {
1033             major = info.dwMajorVersion;
1034             minor = info.dwMinorVersion;
1035
1036             switch ( info.dwPlatformId )
1037             {
1038                 case VER_PLATFORM_WIN32s:
1039                     ver = wxWIN32S;
1040                     break;
1041
1042                 case VER_PLATFORM_WIN32_WINDOWS:
1043                     ver = wxWIN95;
1044                     break;
1045
1046                 case VER_PLATFORM_WIN32_NT:
1047                     ver = wxWINDOWS_NT;
1048                     break;
1049             }
1050         }
1051     }
1052
1053     if (majorVsn && major != -1)
1054         *majorVsn = major;
1055     if (minorVsn && minor != -1)
1056         *minorVsn = minor;
1057
1058     return ver;
1059 #else // Win16
1060     int retValue = wxWINDOWS;
1061     #ifdef __WINDOWS_386__
1062         retValue = wxWIN386;
1063     #else
1064         #if !defined(__WATCOMC__) && !defined(GNUWIN32) && wxUSE_PENWINDOWS
1065             extern HANDLE g_hPenWin;
1066             retValue = g_hPenWin ? wxPENWINDOWS : wxWINDOWS;
1067         #endif
1068     #endif
1069
1070     if (majorVsn)
1071         *majorVsn = 3;
1072     if (minorVsn)
1073         *minorVsn = 1;
1074
1075     return retValue;
1076 #endif
1077 }
1078
1079 // ----------------------------------------------------------------------------
1080 // sleep functions
1081 // ----------------------------------------------------------------------------
1082
1083 #if wxUSE_GUI
1084
1085 #if wxUSE_TIMER
1086
1087 // Sleep for nSecs seconds. Attempt a Windows implementation using timers.
1088 static bool gs_inTimer = FALSE;
1089
1090 class wxSleepTimer : public wxTimer
1091 {
1092 public:
1093     virtual void Notify()
1094     {
1095         gs_inTimer = FALSE;
1096         Stop();
1097     }
1098 };
1099
1100 static wxTimer *wxTheSleepTimer = NULL;
1101
1102 void wxUsleep(unsigned long milliseconds)
1103 {
1104 #ifdef __WIN32__
1105     ::Sleep(milliseconds);
1106 #else // !Win32
1107     if (gs_inTimer)
1108         return;
1109
1110     wxTheSleepTimer = new wxSleepTimer;
1111     gs_inTimer = TRUE;
1112     wxTheSleepTimer->Start(milliseconds);
1113     while (gs_inTimer)
1114     {
1115         if (wxTheApp->Pending())
1116             wxTheApp->Dispatch();
1117     }
1118     delete wxTheSleepTimer;
1119     wxTheSleepTimer = NULL;
1120 #endif // Win32/!Win32
1121 }
1122
1123 void wxSleep(int nSecs)
1124 {
1125     if (gs_inTimer)
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