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(__SALFORDC__) && !defined(__WXMICROWIN__)
  52     #include <direct.h>
  53
  54     #ifndef __MWERKS__
  55         #include <dos.h>
  56     #endif
  57 #endif  //GNUWIN32
  58
  59 #if defined(__CYGWIN__) && !defined(__TWIN32__)
  60     #include <sys/unistd.h>
  61     #include <sys/stat.h>
  62     #include <sys/cygwin.h> // for cygwin_conv_to_full_win32_path()
  63 #endif  //GNUWIN32
  64
  65 #ifdef __BORLANDC__ // Please someone tell me which version of Borland needs
  66                     // this (3.1 I believe) and how to test for it.
  67                     // If this works for Borland 4.0 as well, then no worries.
  68     #include <dir.h>
  69 #endif
  70
  71 // VZ: there is some code using NetXXX() functions to get the full user name:
  72 //     I don't think it's a good idea because they don't work under Win95 and
  73 //     seem to return the same as wxGetUserId() under NT. If you really want
  74 //     to use them, just #define USE_NET_API
  75 #undef USE_NET_API
  76
  77 #ifdef USE_NET_API
  78     #include <lm.h>
  79 #endif // USE_NET_API
  80
  81 #if defined(__WIN32__) && !defined(__WXMICROWIN__)
  82     #ifndef __UNIX__
  83         #include <io.h>
  84     #endif
  85
  86     #ifndef __GNUWIN32__
  87         #include <shellapi.h>
  88     #endif
  89 #endif
  90
  91 #ifndef __WATCOMC__
  92     #if !(defined(_MSC_VER) && (_MSC_VER > 800))
  93         #include <errno.h>
  94     #endif
  95 #endif
  96
  97 //// BEGIN for console support: VC++ only
  98 #ifdef __VISUALC__
  99
 100 #include "wx/msw/msvcrt.h"
 101
 102 #include <fcntl.h>
 103
 104 #include "wx/ioswrap.h"
 105
 106 /* Need to undef new if including crtdbg.h */
 107 #  ifdef new
 108 #  undef new
 109 #  endif
 110
 111 #ifndef __WIN16__
 112 #  include <crtdbg.h>
 113 #endif
 114
 115 #  if defined(__WXDEBUG__) && wxUSE_GLOBAL_MEMORY_OPERATORS && wxUSE_DEBUG_NEW_ALWAYS
 116 #  define new new(__TFILE__,__LINE__)
 117 #  endif
 118
 119 #endif
 120   // __VISUALC__
 121 /// END for console support
 122
 123 // ----------------------------------------------------------------------------
 124 // constants
 125 // ----------------------------------------------------------------------------
 126
 127 // In the WIN.INI file
 128 static const wxChar WX_SECTION[] = wxT("wxWindows");
 129 static const wxChar eUSERNAME[]  = wxT("UserName");
 130
 131 // these are only used under Win16
 132 #if !defined(__WIN32__) && !defined(__WXMICROWIN__)
 133 static const wxChar eHOSTNAME[]  = wxT("HostName");
 134 static const wxChar eUSERID[]    = wxT("UserId");
 135 #endif // !Win32
 136
 137 #ifndef __WXMICROWIN__
 138
 139 // ============================================================================
 140 // implementation
 141 // ============================================================================
 142
 143 // ----------------------------------------------------------------------------
 144 // get host name and related
 145 // ----------------------------------------------------------------------------
 146
 147 // Get hostname only (without domain name)
 148 bool wxGetHostName(wxChar *buf, int maxSize)
 149 {
 150 #if defined(__WIN32__) && !defined(__TWIN32__) && !defined(__WXMICROWIN__)
 151     DWORD nSize = maxSize;
 152     if ( !::GetComputerName(buf, &nSize) )
 153     {
 154         wxLogLastError(wxT("GetComputerName"));
 155
 156         return FALSE;
 157     }
 158
 159     return TRUE;
 160 #else
 161     wxChar *sysname;
 162     const wxChar *default_host = wxT("noname");
 163
 164     if ((sysname = wxGetenv(wxT("SYSTEM_NAME"))) == NULL) {
 165         GetProfileString(WX_SECTION, eHOSTNAME, default_host, buf, maxSize - 1);
 166     } else
 167         wxStrncpy(buf, sysname, maxSize - 1);
 168     buf[maxSize] = wxT('\0');
 169     return *buf ? TRUE : FALSE;
 170 #endif
 171 }
 172
 173 // get full hostname (with domain name if possible)
 174 bool wxGetFullHostName(wxChar *buf, int maxSize)
 175 {
 176 #if defined(__WIN32__) && !defined(__TWIN32__) && !defined(__WXMICROWIN__) && ! (defined(__GNUWIN32__) && !defined(__MINGW32__))
 177     // TODO should use GetComputerNameEx() when available
 178
 179     // the idea is that if someone had set wxUSE_SOCKETS to 0 the code
 180     // shouldn't use winsock.dll (a.k.a. ws2_32.dll) at all so only use this
 181     // code if we link with it anyhow
 182 #if wxUSE_SOCKETS
 183     WSADATA wsa;
 184     if ( WSAStartup(MAKEWORD(1, 1), &wsa) == 0 )
 185     {
 186         wxString host;
 187         char bufA[256];
 188         if ( gethostname(bufA, WXSIZEOF(bufA)) == 0 )
 189         {
 190             // gethostname() won't usually include the DNS domain name, for
 191             // this we need to work a bit more
 192             if ( !strchr(bufA, '.') )
 193             {
 194                 struct hostent *pHostEnt =  gethostbyname(bufA);
 195
 196                 if ( pHostEnt )
 197                 {
 198                     // Windows will use DNS internally now
 199                     pHostEnt = gethostbyaddr(pHostEnt->h_addr, 4, AF_INET);
 200                 }
 201
 202                 if ( pHostEnt )
 203                 {
 204                     host = wxString::FromAscii(pHostEnt->h_name);
 205                 }
 206             }
 207         }
 208
 209         WSACleanup();
 210
 211         if ( !host.empty() )
 212         {
 213             wxStrncpy(buf, host, maxSize);
 214
 215             return TRUE;
 216         }
 217     }
 218 #endif // wxUSE_SOCKETS
 219
 220 #endif // Win32
 221
 222     return wxGetHostName(buf, maxSize);
 223 }
 224
 225 // Get user ID e.g. jacs
 226 bool wxGetUserId(wxChar *buf, int maxSize)
 227 {
 228 #if defined(__WIN32__) && !defined(__win32s__) && !defined(__TWIN32__) && !defined(__WXMICROWIN__)
 229     DWORD nSize = maxSize;
 230     if ( ::GetUserName(buf, &nSize) == 0 )
 231     {
 232         // actually, it does happen on Win9x if the user didn't log on
 233         DWORD res = ::GetEnvironmentVariable(wxT("username"), buf, maxSize);
 234         if ( res == 0 )
 235         {
 236             // not found
 237             return FALSE;
 238         }
 239     }
 240
 241     return TRUE;
 242 #else   // Win16 or Win32s
 243     wxChar *user;
 244     const wxChar *default_id = wxT("anonymous");
 245
 246     // Can't assume we have NIS (PC-NFS) or some other ID daemon
 247     // So we ...
 248     if (  (user = wxGetenv(wxT("USER"))) == NULL &&
 249             (user = wxGetenv(wxT("LOGNAME"))) == NULL )
 250     {
 251         // Use wxWindows configuration data (comming soon)
 252         GetProfileString(WX_SECTION, eUSERID, default_id, buf, maxSize - 1);
 253     }
 254     else
 255     {
 256         wxStrncpy(buf, user, maxSize - 1);
 257     }
 258
 259     return *buf ? TRUE : FALSE;
 260 #endif
 261 }
 262
 263 // Get user name e.g. Julian Smart
 264 bool wxGetUserName(wxChar *buf, int maxSize)
 265 {
 266 #if wxUSE_PENWINDOWS && !defined(__WATCOMC__) && !defined(__GNUWIN32__)
 267     extern HANDLE g_hPenWin; // PenWindows Running?
 268     if (g_hPenWin)
 269     {
 270         // PenWindows Does have a user concept!
 271         // Get the current owner of the recognizer
 272         GetPrivateProfileString("Current", "User", default_name, wxBuffer, maxSize - 1, "PENWIN.INI");
 273         strncpy(buf, wxBuffer, maxSize - 1);
 274     }
 275     else
 276 #endif
 277     {
 278 #ifdef USE_NET_API
 279         CHAR szUserName[256];
 280         if ( !wxGetUserId(szUserName, WXSIZEOF(szUserName)) )
 281             return FALSE;
 282
 283         // TODO how to get the domain name?
 284         CHAR *szDomain = "";
 285
 286         // the code is based on the MSDN example (also see KB article Q119670)
 287         WCHAR wszUserName[256];          // Unicode user name
 288         WCHAR wszDomain[256];
 289         LPBYTE ComputerName;
 290
 291         USER_INFO_2 *ui2;         // User structure
 292
 293         // Convert ANSI user name and domain to Unicode
 294         MultiByteToWideChar( CP_ACP, 0, szUserName, strlen(szUserName)+1,
 295                 wszUserName, WXSIZEOF(wszUserName) );
 296         MultiByteToWideChar( CP_ACP, 0, szDomain, strlen(szDomain)+1,
 297                 wszDomain, WXSIZEOF(wszDomain) );
 298
 299         // Get the computer name of a DC for the domain.
 300         if ( NetGetDCName( NULL, wszDomain, &ComputerName ) != NERR_Success )
 301         {
 302             wxLogError(wxT("Can not find domain controller"));
 303
 304             goto error;
 305         }
 306
 307         // Look up the user on the DC
 308         NET_API_STATUS status = NetUserGetInfo( (LPWSTR)ComputerName,
 309                 (LPWSTR)&wszUserName,
 310                 2, // level - we want USER_INFO_2
 311                 (LPBYTE *) &ui2 );
 312         switch ( status )
 313         {
 314             case NERR_Success:
 315                 // ok
 316                 break;
 317
 318             case NERR_InvalidComputer:
 319                 wxLogError(wxT("Invalid domain controller name."));
 320
 321                 goto error;
 322
 323             case NERR_UserNotFound:
 324                 wxLogError(wxT("Invalid user name '%s'."), szUserName);
 325
 326                 goto error;
 327
 328             default:
 329                 wxLogSysError(wxT("Can't get information about user"));
 330
 331                 goto error;
 332         }
 333
 334         // Convert the Unicode full name to ANSI
 335         WideCharToMultiByte( CP_ACP, 0, ui2->usri2_full_name, -1,
 336                 buf, maxSize, NULL, NULL );
 337
 338         return TRUE;
 339
 340 error:
 341         wxLogError(wxT("Couldn't look up full user name."));
 342
 343         return FALSE;
 344 #else  // !USE_NET_API
 345         // Could use NIS, MS-Mail or other site specific programs
 346         // Use wxWindows configuration data
 347         bool ok = GetProfileString(WX_SECTION, eUSERNAME, wxT(""), buf, maxSize - 1) != 0;
 348         if ( !ok )
 349         {
 350             ok = wxGetUserId(buf, maxSize);
 351         }
 352
 353         if ( !ok )
 354         {
 355             wxStrncpy(buf, wxT("Unknown User"), maxSize);
 356         }
 357 #endif // Win32/16
 358     }
 359
 360     return TRUE;
 361 }
 362
 363 const wxChar* wxGetHomeDir(wxString *pstr)
 364 {
 365   wxString& strDir = *pstr;
 366
 367   #if defined(__UNIX__) && !defined(__TWIN32__)
 368     const wxChar *szHome = wxGetenv("HOME");
 369     if ( szHome == NULL ) {
 370       // we're homeless...
 371       wxLogWarning(_("can't find user's HOME, using current directory."));
 372       strDir = wxT(".");
 373     }
 374     else
 375        strDir = szHome;
 376
 377     // add a trailing slash if needed
 378     if ( strDir.Last() != wxT('/') )
 379       strDir << wxT('/');
 380
 381     #ifdef __CYGWIN__
 382       // Cygwin returns unix type path but that does not work well
 383       static wxChar windowsPath[MAX_PATH];
 384       cygwin_conv_to_full_win32_path(strDir, windowsPath);
 385       strDir = windowsPath;
 386     #endif
 387   #else   // Windows
 388     #ifdef  __WIN32__
 389       strDir.clear();
 390
 391       // If we have a valid HOME directory, as is used on many machines that
 392       // have unix utilities on them, we should use that.
 393       const wxChar *szHome = wxGetenv(wxT("HOME"));
 394
 395       if ( szHome != NULL )
 396       {
 397         strDir = szHome;
 398       }
 399       else // no HOME, try HOMEDRIVE/PATH
 400       {
 401           szHome = wxGetenv(wxT("HOMEDRIVE"));
 402           if ( szHome != NULL )
 403             strDir << szHome;
 404           szHome = wxGetenv(wxT("HOMEPATH"));
 405
 406           if ( szHome != NULL )
 407           {
 408             strDir << szHome;
 409
 410             // the idea is that under NT these variables have default values
 411             // of "%systemdrive%:" and "\\". As we don't want to create our
 412             // config files in the root directory of the system drive, we will
 413             // create it in our program's dir. However, if the user took care
 414             // to set HOMEPATH to something other than "\\", we suppose that he
 415             // knows what he is doing and use the supplied value.
 416             if ( wxStrcmp(szHome, wxT("\\")) == 0 )
 417               strDir.clear();
 418           }
 419       }
 420
 421       if ( strDir.empty() )
 422       {
 423           // If we have a valid USERPROFILE directory, as is the case in
 424           // Windows NT, 2000 and XP, we should use that as our home directory.
 425           szHome = wxGetenv(wxT("USERPROFILE"));
 426
 427           if ( szHome != NULL )
 428             strDir = szHome;
 429       }
 430
 431       if ( !strDir.empty() )
 432       {
 433           return strDir.c_str();
 434       }
 435       //else: fall back to the prograrm directory
 436     #else   // Win16
 437       // Win16 has no idea about home, so use the executable directory instead
 438     #endif  // WIN16/32
 439
 440     // 260 was taken from windef.h
 441     #ifndef MAX_PATH
 442       #define MAX_PATH  260
 443     #endif
 444
 445     wxString strPath;
 446     ::GetModuleFileName(::GetModuleHandle(NULL),
 447                         strPath.GetWriteBuf(MAX_PATH), MAX_PATH);
 448     strPath.UngetWriteBuf();
 449
 450     // extract the dir name
 451     wxSplitPath(strPath, &strDir, NULL, NULL);
 452
 453   #endif  // UNIX/Win
 454
 455   return strDir.c_str();
 456 }
 457
 458 wxChar *wxGetUserHome(const wxString& WXUNUSED(user))
 459 {
 460     // VZ: the old code here never worked for user != "" anyhow! Moreover, it
 461     //     returned sometimes a malloc()'d pointer, sometimes a pointer to a
 462     //     static buffer and sometimes I don't even know what.
 463     static wxString s_home;
 464
 465     return (wxChar *)wxGetHomeDir(&s_home);
 466 }
 467
 468 bool wxDirExists(const wxString& dir)
 469 {
 470 #ifdef __WXMICROWIN__
 471     return wxPathExist(dir);
 472 #elif defined(__WIN32__)
 473     DWORD attribs = GetFileAttributes(dir);
 474     return ((attribs != (DWORD)-1) && (attribs & FILE_ATTRIBUTE_DIRECTORY));
 475 #else // Win16
 476     #ifdef __BORLANDC__
 477         struct ffblk fileInfo;
 478     #else
 479         struct find_t fileInfo;
 480     #endif
 481     // In Borland findfirst has a different argument
 482     // ordering from _dos_findfirst. But _dos_findfirst
 483     // _should_ be ok in both MS and Borland... why not?
 484     #ifdef __BORLANDC__
 485         return (findfirst(dir, &fileInfo, _A_SUBDIR) == 0 &&
 486                (fileInfo.ff_attrib & _A_SUBDIR) != 0);
 487     #else
 488         return (_dos_findfirst(dir, _A_SUBDIR, &fileInfo) == 0) &&
 489                ((fileInfo.attrib & _A_SUBDIR) != 0);
 490     #endif
 491 #endif // Win32/16
 492 }
 493
 494 bool wxGetDiskSpace(const wxString& path, wxLongLong *pTotal, wxLongLong *pFree)
 495 {
 496     if ( path.empty() )
 497         return FALSE;
 498
 499 // old w32api don't have ULARGE_INTEGER
 500 #if defined(__WIN32__) && \
 501     (!defined(__GNUWIN32__) || wxCHECK_W32API_VERSION( 0, 3 ))
 502     // GetDiskFreeSpaceEx() is not available under original Win95, check for
 503     // it
 504     typedef BOOL (WINAPI *GetDiskFreeSpaceEx_t)(LPCTSTR,
 505                                                 PULARGE_INTEGER,
 506                                                 PULARGE_INTEGER,
 507                                                 PULARGE_INTEGER);
 508
 509     GetDiskFreeSpaceEx_t
 510         pGetDiskFreeSpaceEx = (GetDiskFreeSpaceEx_t)::GetProcAddress
 511                               (
 512                                 ::GetModuleHandle(_T("kernel32.dll")),
 513 #if wxUSE_UNICODE
 514                                 "GetDiskFreeSpaceExW"
 515 #else
 516                                 "GetDiskFreeSpaceExA"
 517 #endif
 518                               );
 519
 520     if ( pGetDiskFreeSpaceEx )
 521     {
 522         ULARGE_INTEGER bytesFree, bytesTotal;
 523
 524         // may pass the path as is, GetDiskFreeSpaceEx() is smart enough
 525         if ( !pGetDiskFreeSpaceEx(path,
 526                                   &bytesFree,
 527                                   &bytesTotal,
 528                                   NULL) )
 529         {
 530             wxLogLastError(_T("GetDiskFreeSpaceEx"));
 531
 532             return FALSE;
 533         }
 534
 535         // ULARGE_INTEGER is a union of a 64 bit value and a struct containing
 536         // two 32 bit fields which may be or may be not named - try to make it
 537         // compile in all cases
 538 #if defined(__BORLANDC__) && !defined(_ANONYMOUS_STRUCT)
 539         #define UL(ul) ul.u
 540 #else // anon union
 541         #define UL(ul) ul
 542 #endif
 543         if ( pTotal )
 544         {
 545             *pTotal = wxLongLong(UL(bytesTotal).HighPart, UL(bytesTotal).LowPart);
 546         }
 547
 548         if ( pFree )
 549         {
 550             *pFree = wxLongLong(UL(bytesFree).HighPart, UL(bytesFree).LowPart);
 551         }
 552     }
 553     else
 554 #endif // Win32
 555     {
 556         // there's a problem with drives larger than 2GB, GetDiskFreeSpaceEx()
 557         // should be used instead - but if it's not available, fall back on
 558         // GetDiskFreeSpace() nevertheless...
 559
 560         DWORD lSectorsPerCluster,
 561               lBytesPerSector,
 562               lNumberOfFreeClusters,
 563               lTotalNumberOfClusters;
 564
 565         // FIXME: this is wrong, we should extract the root drive from path
 566         //        instead, but this is the job for wxFileName...
 567         if ( !::GetDiskFreeSpace(path,
 568                                  &lSectorsPerCluster,
 569                                  &lBytesPerSector,
 570                                  &lNumberOfFreeClusters,
 571                                  &lTotalNumberOfClusters) )
 572         {
 573             wxLogLastError(_T("GetDiskFreeSpace"));
 574
 575             return FALSE;
 576         }
 577
 578         wxLongLong lBytesPerCluster = lSectorsPerCluster;
 579         lBytesPerCluster *= lBytesPerSector;
 580
 581         if ( pTotal )
 582         {
 583             *pTotal = lBytesPerCluster;
 584             *pTotal *= lTotalNumberOfClusters;
 585         }
 586
 587         if ( pFree )
 588         {
 589             *pFree = lBytesPerCluster;
 590             *pFree *= lNumberOfFreeClusters;
 591         }
 592     }
 593
 594     return TRUE;
 595 }
 596
 597 // ----------------------------------------------------------------------------
 598 // env vars
 599 // ----------------------------------------------------------------------------
 600
 601 bool wxGetEnv(const wxString& var, wxString *value)
 602 {
 603 #ifdef __WIN16__
 604     const wxChar* ret = wxGetenv(var);
 605     if ( !ret )
 606         return FALSE;
 607
 608     if ( value )
 609     {
 610         *value = ret;
 611     }
 612
 613     return TRUE;
 614 #else // Win32
 615     // first get the size of the buffer
 616     DWORD dwRet = ::GetEnvironmentVariable(var, NULL, 0);
 617     if ( !dwRet )
 618     {
 619         // this means that there is no such variable
 620         return FALSE;
 621     }
 622
 623     if ( value )
 624     {
 625         (void)::GetEnvironmentVariable(var, value->GetWriteBuf(dwRet), dwRet);
 626         value->UngetWriteBuf();
 627     }
 628
 629     return TRUE;
 630 #endif // Win16/32
 631 }
 632
 633 bool wxSetEnv(const wxString& var, const wxChar *value)
 634 {
 635     // some compilers have putenv() or _putenv() or _wputenv() but it's better
 636     // to always use Win32 function directly instead of dealing with them
 637 #if defined(__WIN32__)
 638     if ( !::SetEnvironmentVariable(var, value) )
 639     {
 640         wxLogLastError(_T("SetEnvironmentVariable"));
 641
 642         return FALSE;
 643     }
 644
 645     return TRUE;
 646 #else // no way to set env vars
 647     return FALSE;
 648 #endif
 649 }
 650
 651 // ----------------------------------------------------------------------------
 652 // process management
 653 // ----------------------------------------------------------------------------
 654
 655 #ifdef __WIN32__
 656
 657 // structure used to pass parameters from wxKill() to wxEnumFindByPidProc()
 658 struct wxFindByPidParams
 659 {
 660     wxFindByPidParams() { hwnd = 0; pid = 0; }
 661
 662     // the HWND used to return the result
 663     HWND hwnd;
 664
 665     // the PID we're looking from
 666     DWORD pid;
 667
 668     DECLARE_NO_COPY_CLASS(wxFindByPidParams)
 669 };
 670
 671 // wxKill helper: EnumWindows() callback which is used to find the first (top
 672 // level) window belonging to the given process
 673 BOOL CALLBACK wxEnumFindByPidProc(HWND hwnd, LPARAM lParam)
 674 {
 675     DWORD pid;
 676     (void)::GetWindowThreadProcessId(hwnd, &pid);
 677
 678     wxFindByPidParams *params = (wxFindByPidParams *)lParam;
 679     if ( pid == params->pid )
 680     {
 681         // remember the window we found
 682         params->hwnd = hwnd;
 683
 684         // return FALSE to stop the enumeration
 685         return FALSE;
 686     }
 687
 688     // continue enumeration
 689     return TRUE;
 690 }
 691
 692 #endif // __WIN32__
 693
 694 int wxKill(long pid, wxSignal sig, wxKillError *krc)
 695 {
 696 #ifdef __WIN32__
 697     // get the process handle to operate on
 698     HANDLE hProcess = ::OpenProcess(SYNCHRONIZE |
 699                                     PROCESS_TERMINATE |
 700                                     PROCESS_QUERY_INFORMATION,
 701                                     FALSE, // not inheritable
 702                                     (DWORD)pid);
 703     if ( hProcess == NULL )
 704     {
 705         if ( krc )
 706         {
 707             if ( ::GetLastError() == ERROR_ACCESS_DENIED )
 708             {
 709                 *krc = wxKILL_ACCESS_DENIED;
 710             }
 711             else
 712             {
 713                 *krc = wxKILL_NO_PROCESS;
 714             }
 715         }
 716
 717         return -1;
 718     }
 719
 720     bool ok = TRUE;
 721     switch ( sig )
 722     {
 723         case wxSIGKILL:
 724             // kill the process forcefully returning -1 as error code
 725             if ( !::TerminateProcess(hProcess, (UINT)-1) )
 726             {
 727                 wxLogSysError(_("Failed to kill process %d"), pid);
 728
 729                 if ( krc )
 730                 {
 731                     // this is not supposed to happen if we could open the
 732                     // process
 733                     *krc = wxKILL_ERROR;
 734                 }
 735
 736                 ok = FALSE;
 737             }
 738             break;
 739
 740         case wxSIGNONE:
 741             // do nothing, we just want to test for process existence
 742             break;
 743
 744         default:
 745             // any other signal means "terminate"
 746             {
 747                 wxFindByPidParams params;
 748                 params.pid = (DWORD)pid;
 749
 750                 // EnumWindows() has nice semantics: it returns 0 if it found
 751                 // something or if an error occured and non zero if it
 752                 // enumerated all the window
 753                 if ( !::EnumWindows(wxEnumFindByPidProc, (LPARAM)&params) )
 754                 {
 755                     // did we find any window?
 756                     if ( params.hwnd )
 757                     {
 758                         // tell the app to close
 759                         //
 760                         // NB: this is the harshest way, the app won't have
 761                         //     opportunity to save any files, for example, but
 762                         //     this is probably what we want here. If not we
 763                         //     can also use SendMesageTimeout(WM_CLOSE)
 764                         if ( !::PostMessage(params.hwnd, WM_QUIT, 0, 0) )
 765                         {
 766                             wxLogLastError(_T("PostMessage(WM_QUIT)"));
 767                         }
 768                     }
 769                     else // it was an error then
 770                     {
 771                         wxLogLastError(_T("EnumWindows"));
 772
 773                         ok = FALSE;
 774                     }
 775                 }
 776                 else // no windows for this PID
 777                 {
 778                     if ( krc )
 779                     {
 780                         *krc = wxKILL_ERROR;
 781                     }
 782
 783                     ok = FALSE;
 784                 }
 785             }
 786     }
 787
 788     // the return code
 789     DWORD rc;
 790
 791     if ( ok )
 792     {
 793         // as we wait for a short time, we can use just WaitForSingleObject()
 794         // and not MsgWaitForMultipleObjects()
 795         switch ( ::WaitForSingleObject(hProcess, 500 /* msec */) )
 796         {
 797             case WAIT_OBJECT_0:
 798                 // process terminated
 799                 if ( !::GetExitCodeProcess(hProcess, &rc) )
 800                 {
 801                     wxLogLastError(_T("GetExitCodeProcess"));
 802                 }
 803                 break;
 804
 805             default:
 806                 wxFAIL_MSG( _T("unexpected WaitForSingleObject() return") );
 807                 // fall through
 808
 809             case WAIT_FAILED:
 810                 wxLogLastError(_T("WaitForSingleObject"));
 811                 // fall through
 812
 813             case WAIT_TIMEOUT:
 814                 if ( krc )
 815                 {
 816                     *krc = wxKILL_ERROR;
 817                 }
 818
 819                 rc = STILL_ACTIVE;
 820                 break;
 821         }
 822     }
 823     else // !ok
 824     {
 825         // just to suppress the warnings about uninitialized variable
 826         rc = 0;
 827     }
 828
 829     ::CloseHandle(hProcess);
 830
 831     // the return code is the same as from Unix kill(): 0 if killed
 832     // successfully or -1 on error
 833     if ( sig == wxSIGNONE )
 834     {
 835         if ( ok && rc == STILL_ACTIVE )
 836         {
 837             // there is such process => success
 838             return 0;
 839         }
 840     }
 841     else // not SIGNONE
 842     {
 843         if ( ok && rc != STILL_ACTIVE )
 844         {
 845             // killed => success
 846             return 0;
 847         }
 848     }
 849 #else // Win16
 850     wxFAIL_MSG( _T("not implemented") );
 851 #endif // Win32/Win16
 852
 853     // error
 854     return -1;
 855 }
 856
 857 // Execute a program in an Interactive Shell
 858 bool wxShell(const wxString& command)
 859 {
 860     wxChar *shell = wxGetenv(wxT("COMSPEC"));
 861     if ( !shell )
 862         shell = (wxChar*) wxT("\\COMMAND.COM");
 863
 864     wxString cmd;
 865     if ( !command )
 866     {
 867         // just the shell
 868         cmd = shell;
 869     }
 870     else
 871     {
 872         // pass the command to execute to the command processor
 873         cmd.Printf(wxT("%s /c %s"), shell, command.c_str());
 874     }
 875
 876     return wxExecute(cmd, wxEXEC_SYNC) == 0;
 877 }
 878
 879 // Shutdown or reboot the PC
 880 bool wxShutdown(wxShutdownFlags wFlags)
 881 {
 882 #ifdef __WIN32__
 883     bool bOK = TRUE;
 884
 885     if ( wxGetOsVersion(NULL, NULL) == wxWINDOWS_NT ) // if is NT or 2K
 886     {
 887         // Get a token for this process.
 888         HANDLE hToken;
 889         bOK = ::OpenProcessToken(GetCurrentProcess(),
 890                                  TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY,
 891                                  &hToken) != 0;
 892         if ( bOK )
 893         {
 894             TOKEN_PRIVILEGES tkp;
 895
 896             // Get the LUID for the shutdown privilege.
 897             ::LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,
 898                                    &tkp.Privileges[0].Luid);
 899
 900             tkp.PrivilegeCount = 1;  // one privilege to set
 901             tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
 902
 903             // Get the shutdown privilege for this process.
 904             ::AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,
 905                                     (PTOKEN_PRIVILEGES)NULL, 0);
 906
 907             // Cannot test the return value of AdjustTokenPrivileges.
 908             bOK = ::GetLastError() == ERROR_SUCCESS;
 909         }
 910     }
 911
 912     if ( bOK )
 913     {
 914         UINT flags = EWX_SHUTDOWN | EWX_FORCE;
 915         switch ( wFlags )
 916         {
 917             case wxSHUTDOWN_POWEROFF:
 918                 flags |= EWX_POWEROFF;
 919                 break;
 920
 921             case wxSHUTDOWN_REBOOT:
 922                 flags |= EWX_REBOOT;
 923                 break;
 924
 925             default:
 926                 wxFAIL_MSG( _T("unknown wxShutdown() flag") );
 927                 return FALSE;
 928         }
 929
 930         bOK = ::ExitWindowsEx(EWX_SHUTDOWN | EWX_FORCE | EWX_REBOOT, 0) != 0;
 931     }
 932
 933     return bOK;
 934 #else // Win16
 935     return FALSE;
 936 #endif // Win32/16
 937 }
 938
 939 // ----------------------------------------------------------------------------
 940 // misc
 941 // ----------------------------------------------------------------------------
 942
 943 // Get free memory in bytes, or -1 if cannot determine amount (e.g. on UNIX)
 944 long wxGetFreeMemory()
 945 {
 946 #if defined(__WIN32__) && !defined(__BORLANDC__) && !defined(__TWIN32__)
 947     MEMORYSTATUS memStatus;
 948     memStatus.dwLength = sizeof(MEMORYSTATUS);
 949     GlobalMemoryStatus(&memStatus);
 950     return memStatus.dwAvailPhys;
 951 #else
 952     return (long)GetFreeSpace(0);
 953 #endif
 954 }
 955
 956 unsigned long wxGetProcessId()
 957 {
 958 #ifdef __WIN32__
 959     return ::GetCurrentProcessId();
 960 #else
 961     return 0;
 962 #endif
 963 }
 964
 965 // Emit a beeeeeep
 966 void wxBell()
 967 {
 968     ::MessageBeep((UINT)-1);        // default sound
 969 }
 970
 971 wxString wxGetOsDescription()
 972 {
 973 #ifdef __WIN32__
 974     wxString str;
 975
 976     OSVERSIONINFO info;
 977     wxZeroMemory(info);
 978
 979     info.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
 980     if ( ::GetVersionEx(&info) )
 981     {
 982         switch ( info.dwPlatformId )
 983         {
 984             case VER_PLATFORM_WIN32s:
 985                 str = _("Win32s on Windows 3.1");
 986                 break;
 987
 988             case VER_PLATFORM_WIN32_WINDOWS:
 989                 str.Printf(_("Windows 9%c"),
 990                            info.dwMinorVersion == 0 ? _T('5') : _T('8'));
 991                 if ( !wxIsEmpty(info.szCSDVersion) )
 992                 {
 993                     str << _T(" (") << info.szCSDVersion << _T(')');
 994                 }
 995                 break;
 996
 997             case VER_PLATFORM_WIN32_NT:
 998                 str.Printf(_T("Windows NT %lu.%lu (build %lu"),
 999                            info.dwMajorVersion,
1000                            info.dwMinorVersion,
1001                            info.dwBuildNumber);
1002                 if ( !wxIsEmpty(info.szCSDVersion) )
1003                 {
1004                     str << _T(", ") << info.szCSDVersion;
1005                 }
1006                 str << _T(')');
1007                 break;
1008         }
1009     }
1010     else
1011     {
1012         wxFAIL_MSG( _T("GetVersionEx() failed") ); // should never happen
1013     }
1014
1015     return str;
1016 #else // Win16
1017     return _("Windows 3.1");
1018 #endif // Win32/16
1019 }
1020
1021 int wxGetOsVersion(int *majorVsn, int *minorVsn)
1022 {
1023 #if defined(__WIN32__) && !defined(__SC__)
1024     static int ver = -1, major = -1, minor = -1;
1025
1026     if ( ver == -1 )
1027     {
1028         OSVERSIONINFO info;
1029         wxZeroMemory(info);
1030
1031         ver = wxWINDOWS;
1032         info.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
1033         if ( ::GetVersionEx(&info) )
1034         {
1035             major = info.dwMajorVersion;
1036             minor = info.dwMinorVersion;
1037
1038             switch ( info.dwPlatformId )
1039             {
1040                 case VER_PLATFORM_WIN32s:
1041                     ver = wxWIN32S;
1042                     break;
1043
1044                 case VER_PLATFORM_WIN32_WINDOWS:
1045                     ver = wxWIN95;
1046                     break;
1047
1048                 case VER_PLATFORM_WIN32_NT:
1049                     ver = wxWINDOWS_NT;
1050                     break;
1051             }
1052         }
1053     }
1054
1055     if (majorVsn && major != -1)
1056         *majorVsn = major;
1057     if (minorVsn && minor != -1)
1058         *minorVsn = minor;
1059
1060     return ver;
1061 #else // Win16
1062     int retValue = wxWINDOWS;
1063     #ifdef __WINDOWS_386__
1064         retValue = wxWIN386;
1065     #else
1066         #if !defined(__WATCOMC__) && !defined(GNUWIN32) && wxUSE_PENWINDOWS
1067             extern HANDLE g_hPenWin;
1068             retValue = g_hPenWin ? wxPENWINDOWS : wxWINDOWS;
1069         #endif
1070     #endif
1071
1072     if (majorVsn)
1073         *majorVsn = 3;
1074     if (minorVsn)
1075         *minorVsn = 1;
1076
1077     return retValue;
1078 #endif
1079 }
1080
1081 // ----------------------------------------------------------------------------
1082 // sleep functions
1083 // ----------------------------------------------------------------------------
1084
1085 #if wxUSE_GUI
1086
1087 #if wxUSE_TIMER
1088
1089 // Sleep for nSecs seconds. Attempt a Windows implementation using timers.
1090 static bool gs_inTimer = FALSE;
1091
1092 class wxSleepTimer : public wxTimer
1093 {
1094 public:
1095     virtual void Notify()
1096     {
1097         gs_inTimer = FALSE;
1098         Stop();
1099     }
1100 };
1101
1102 static wxTimer *wxTheSleepTimer = NULL;
1103
1104 void wxUsleep(unsigned long milliseconds)
1105 {
1106 #ifdef __WIN32__
1107     ::Sleep(milliseconds);
1108 #else // !Win32
1109     if (gs_inTimer)
1110         return;
1111
1112     wxTheSleepTimer = new wxSleepTimer;
1113     gs_inTimer = TRUE;
1114     wxTheSleepTimer->Start(milliseconds);
1115     while (gs_inTimer)
1116     {
1117         if (wxTheApp->Pending())
1118             wxTheApp->Dispatch();
1119     }
1120     delete wxTheSleepTimer;
1121     wxTheSleepTimer = NULL;
1122 #endif // Win32/!Win32
1123 }
1124
1125 void wxSleep(int nSecs)
1126 {
1127     if (gs_inTimer)
1128         return;
1129
1130     wxTheSleepTimer = new wxSleepTimer;
1131     gs_inTimer = TRUE;
1132     wxTheSleepTimer->Start(nSecs*1000);
1133     while (gs_inTimer)
1134     {
1135         if (wxTheApp->Pending())
1136             wxTheApp->Dispatch();
1137     }
1138     delete wxTheSleepTimer;
1139     wxTheSleepTimer = NULL;
1140 }
1141
1142 // Consume all events until no more left
1143 void wxFlushEvents()
1144 {
1145 //  wxYield();
1146 }
1147
1148 #endif // wxUSE_TIMER
1149
1150 #elif defined(__WIN32__) // wxUSE_GUI
1151
1152 void wxUsleep(unsigned long milliseconds)
1153 {
1154     ::Sleep(milliseconds);
1155 }
1156
1157 void wxSleep(int nSecs)
1158 {
1159     wxUsleep(1000*nSecs);
1160 }
1161
1162 #endif // wxUSE_GUI/!wxUSE_GUI
1163 #endif // __WXMICROWIN__
1164
1165 // ----------------------------------------------------------------------------
1166 // deprecated (in favour of wxLog) log functions
1167 // ----------------------------------------------------------------------------
1168
1169 #if WXWIN_COMPATIBILITY_2_2
1170
1171 // Output a debug mess., in a system dependent fashion.
1172 #ifndef __WXMICROWIN__
1173 void wxDebugMsg(const wxChar *fmt ...)
1174 {
1175   va_list ap;
1176   static wxChar buffer[512];
1177
1178   if (!wxTheApp->GetWantDebugOutput())
1179     return;
1180
1181   va_start(ap, fmt);
1182
1183   wvsprintf(buffer,fmt,ap);
1184   OutputDebugString((LPCTSTR)buffer);
1185
1186   va_end(ap);
1187 }
1188
1189 // Non-fatal error: pop up message box and (possibly) continue
1190 void wxError(const wxString& msg, const wxString& title)
1191 {
1192   wxSprintf(wxBuffer, wxT("%s\nContinue?"), WXSTRINGCAST msg);
1193   if (MessageBox(NULL, (LPCTSTR)wxBuffer, (LPCTSTR)WXSTRINGCAST title,
1194              MB_ICONSTOP | MB_YESNO) == IDNO)
1195     wxExit();
1196 }
1197
1198 // Fatal error: pop up message box and abort
1199 void wxFatalError(const wxString& msg, const wxString& title)
1200 {
1201   wxSprintf(wxBuffer, wxT("%s: %s"), WXSTRINGCAST title, WXSTRINGCAST msg);
1202   FatalAppExit(0, (LPCTSTR)wxBuffer);
1203 }
1204 #endif // __WXMICROWIN__
1205
1206 #endif // WXWIN_COMPATIBILITY_2_2
1207
1208 #if wxUSE_GUI
1209
1210 // ----------------------------------------------------------------------------
1211 // functions to work with .INI files
1212 // ----------------------------------------------------------------------------
1213
1214 // Reading and writing resources (eg WIN.INI, .Xdefaults)
1215 #if wxUSE_RESOURCES
1216 bool wxWriteResource(const wxString& section, const wxString& entry, const wxString& value, const wxString& file)
1217 {
1218   if (file != wxT(""))
1219 // Don't know what the correct cast should be, but it doesn't
1220 // compile in BC++/16-bit without this cast.
1221 #if !defined(__WIN32__)
1222     return (WritePrivateProfileString((const char*) section, (const char*) entry, (const char*) value, (const char*) file) != 0);
1223 #else
1224     return (WritePrivateProfileString((LPCTSTR)WXSTRINGCAST section, (LPCTSTR)WXSTRINGCAST entry, (LPCTSTR)value, (LPCTSTR)WXSTRINGCAST file) != 0);
1225 #endif
1226   else
1227     return (WriteProfileString((LPCTSTR)WXSTRINGCAST section, (LPCTSTR)WXSTRINGCAST entry, (LPCTSTR)WXSTRINGCAST value) != 0);
1228 }
1229
1230 bool wxWriteResource(const wxString& section, const wxString& entry, float value, const wxString& file)
1231 {
1232     wxString buf;
1233     buf.Printf(wxT("%.4f"), value);
1234
1235     return wxWriteResource(section, entry, buf, file);
1236 }
1237
1238 bool wxWriteResource(const wxString& section, const wxString& entry, long value, const wxString& file)
1239 {
1240     wxString buf;
1241     buf.Printf(wxT("%ld"), value);
1242
1243     return wxWriteResource(section, entry, buf, file);
1244 }
1245
1246 bool wxWriteResource(const wxString& section, const wxString& entry, int value, const wxString& file)
1247 {
1248     wxString buf;
1249     buf.Printf(wxT("%d"), value);
1250
1251     return wxWriteResource(section, entry, buf, file);
1252 }
1253
1254 bool wxGetResource(const wxString& section, const wxString& entry, wxChar **value, const wxString& file)
1255 {
1256     static const wxChar defunkt[] = wxT("$$default");
1257     if (file != wxT(""))
1258     {
1259         int n = GetPrivateProfileString((LPCTSTR)WXSTRINGCAST section, (LPCTSTR)WXSTRINGCAST entry, (LPCTSTR)defunkt,
1260                 (LPTSTR)wxBuffer, 1000, (LPCTSTR)WXSTRINGCAST file);
1261         if (n == 0 || wxStrcmp(wxBuffer, defunkt) == 0)
1262             return FALSE;
1263     }
1264     else
1265     {
1266         int n = GetProfileString((LPCTSTR)WXSTRINGCAST section, (LPCTSTR)WXSTRINGCAST entry, (LPCTSTR)defunkt,
1267                 (LPTSTR)wxBuffer, 1000);
1268         if (n == 0 || wxStrcmp(wxBuffer, defunkt) == 0)
1269             return FALSE;
1270     }
1271     if (*value) delete[] (*value);
1272     *value = copystring(wxBuffer);
1273     return TRUE;
1274 }
1275
1276 bool wxGetResource(const wxString& section, const wxString& entry, float *value, const wxString& file)
1277 {
1278     wxChar *s = NULL;
1279     bool succ = wxGetResource(section, entry, (wxChar **)&s, file);
1280     if (succ)
1281     {
1282         *value = (float)wxStrtod(s, NULL);
1283         delete[] s;
1284         return TRUE;
1285     }
1286     else return FALSE;
1287 }
1288
1289 bool wxGetResource(const wxString& section, const wxString& entry, long *value, const wxString& file)
1290 {
1291     wxChar *s = NULL;
1292     bool succ = wxGetResource(section, entry, (wxChar **)&s, file);
1293     if (succ)
1294     {
1295         *value = wxStrtol(s, NULL, 10);
1296         delete[] s;
1297         return TRUE;
1298     }
1299     else return FALSE;
1300 }
1301
1302 bool wxGetResource(const wxString& section, const wxString& entry, int *value, const wxString& file)
1303 {
1304     wxChar *s = NULL;
1305     bool succ = wxGetResource(section, entry, (wxChar **)&s, file);
1306     if (succ)
1307     {
1308         *value = (int)wxStrtol(s, NULL, 10);
1309         delete[] s;
1310         return TRUE;
1311     }
1312     else return FALSE;
1313 }
1314 #endif // wxUSE_RESOURCES
1315
1316 // ---------------------------------------------------------------------------
1317 // helper functions for showing a "busy" cursor
1318 // ---------------------------------------------------------------------------
1319
1320 static HCURSOR gs_wxBusyCursor = 0;     // new, busy cursor
1321 static HCURSOR gs_wxBusyCursorOld = 0;  // old cursor
1322 static int gs_wxBusyCursorCount = 0;
1323
1324 extern HCURSOR wxGetCurrentBusyCursor()
1325 {
1326     return gs_wxBusyCursor;
1327 }
1328
1329 // Set the cursor to the busy cursor for all windows
1330 void wxBeginBusyCursor(wxCursor *cursor)
1331 {
1332     if ( gs_wxBusyCursorCount++ == 0 )
1333     {
1334         gs_wxBusyCursor = (HCURSOR)cursor->GetHCURSOR();
1335 #ifndef __WXMICROWIN__
1336         gs_wxBusyCursorOld = ::SetCursor(gs_wxBusyCursor);
1337 #endif
1338     }
1339     //else: nothing to do, already set
1340 }
1341
1342 // Restore cursor to normal
1343 void wxEndBusyCursor()
1344 {
1345     wxCHECK_RET( gs_wxBusyCursorCount > 0,
1346                  wxT("no matching wxBeginBusyCursor() for wxEndBusyCursor()") );
1347
1348     if ( --gs_wxBusyCursorCount == 0 )
1349     {
1350 #ifndef __WXMICROWIN__
1351         ::SetCursor(gs_wxBusyCursorOld);
1352 #endif
1353         gs_wxBusyCursorOld = 0;
1354     }
1355 }
1356
1357 // TRUE if we're between the above two calls
1358 bool wxIsBusy()
1359 {
1360   return gs_wxBusyCursorCount > 0;
1361 }
1362
1363 // Check whether this window wants to process messages, e.g. Stop button
1364 // in long calculations.
1365 bool wxCheckForInterrupt(wxWindow *wnd)
1366 {
1367     wxCHECK( wnd, FALSE );
1368
1369     MSG msg;
1370     while ( ::PeekMessage(&msg, GetHwndOf(wnd), 0, 0, PM_REMOVE) )
1371     {
1372         ::TranslateMessage(&msg);
1373         ::DispatchMessage(&msg);
1374     }
1375
1376     return TRUE;
1377 }
1378
1379 // MSW only: get user-defined resource from the .res file.
1380 // Returns NULL or newly-allocated memory, so use delete[] to clean up.
1381
1382 #ifndef __WXMICROWIN__
1383 wxChar *wxLoadUserResource(const wxString& resourceName, const wxString& resourceType)
1384 {
1385     HRSRC hResource = ::FindResource(wxGetInstance(), resourceName, resourceType);
1386     if ( hResource == 0 )
1387         return NULL;
1388
1389     HGLOBAL hData = ::LoadResource(wxGetInstance(), hResource);
1390     if ( hData == 0 )
1391         return NULL;
1392
1393     wxChar *theText = (wxChar *)::LockResource(hData);
1394     if ( !theText )
1395         return NULL;
1396
1397     // Not all compilers put a zero at the end of the resource (e.g. BC++ doesn't).
1398     // so we need to find the length of the resource.
1399     int len = ::SizeofResource(wxGetInstance(), hResource);
1400     wxChar  *s = new wxChar[len+1];
1401     wxStrncpy(s,theText,len);
1402     s[len]=0;
1403
1404     // wxChar *s = copystring(theText);
1405
1406     // Obsolete in WIN32
1407 #ifndef __WIN32__
1408     UnlockResource(hData);
1409 #endif
1410
1411     // No need??
1412     //  GlobalFree(hData);
1413
1414     return s;
1415 }
1416 #endif // __WXMICROWIN__
1417
1418 // ----------------------------------------------------------------------------
1419 // get display info
1420 // ----------------------------------------------------------------------------
1421
1422 // See also the wxGetMousePosition in window.cpp
1423 // Deprecated: use wxPoint wxGetMousePosition() instead
1424 void wxGetMousePosition( int* x, int* y )
1425 {
1426     POINT pt;
1427     GetCursorPos( & pt );
1428     if ( x ) *x = pt.x;
1429     if ( y ) *y = pt.y;
1430 };
1431
1432 // Return TRUE if we have a colour display
1433 bool wxColourDisplay()
1434 {
1435 #ifdef __WXMICROWIN__
1436     // MICROWIN_TODO
1437     return TRUE;
1438 #else
1439     // this function is called from wxDC ctor so it is called a *lot* of times
1440     // hence we optimize it a bit but doign the check only once
1441     //
1442     // this should be MT safe as only the GUI thread (holding the GUI mutex)
1443     // can call us
1444     static int s_isColour = -1;
1445
1446     if ( s_isColour == -1 )
1447     {
1448         ScreenHDC dc;
1449         int noCols = ::GetDeviceCaps(dc, NUMCOLORS);
1450
1451         s_isColour = (noCols == -1) || (noCols > 2);
1452     }
1453
1454     return s_isColour != 0;
1455 #endif
1456 }
1457
1458 // Returns depth of screen
1459 int wxDisplayDepth()
1460 {
1461     ScreenHDC dc;
1462     return GetDeviceCaps(dc, PLANES) * GetDeviceCaps(dc, BITSPIXEL);
1463 }
1464
1465 // Get size of display
1466 void wxDisplaySize(int *width, int *height)
1467 {
1468 #ifdef __WXMICROWIN__
1469     RECT rect;
1470     HWND hWnd = GetDesktopWindow();
1471     ::GetWindowRect(hWnd, & rect);
1472
1473     if ( width )
1474         *width = rect.right - rect.left;
1475     if ( height )
1476         *height = rect.bottom - rect.top;
1477 #else // !__WXMICROWIN__
1478     ScreenHDC dc;
1479
1480     if ( width )
1481         *width = ::GetDeviceCaps(dc, HORZRES);
1482     if ( height )
1483         *height = ::GetDeviceCaps(dc, VERTRES);
1484 #endif // __WXMICROWIN__/!__WXMICROWIN__
1485 }
1486
1487 void wxDisplaySizeMM(int *width, int *height)
1488 {
1489 #ifdef __WXMICROWIN__
1490     // MICROWIN_TODO
1491     if ( width )
1492         *width = 0;
1493     if ( height )
1494         *height = 0;
1495 #else
1496     ScreenHDC dc;
1497
1498     if ( width )
1499         *width = ::GetDeviceCaps(dc, HORZSIZE);
1500     if ( height )
1501         *height = ::GetDeviceCaps(dc, VERTSIZE);
1502 #endif
1503 }
1504
1505 void wxClientDisplayRect(int *x, int *y, int *width, int *height)
1506 {
1507 #if defined(__WIN16__) || defined(__WXMICROWIN__)
1508     *x = 0; *y = 0;
1509     wxDisplaySize(width, height);
1510 #else
1511     // Determine the desktop dimensions minus the taskbar and any other
1512     // special decorations...
1513     RECT r;
1514
1515     SystemParametersInfo(SPI_GETWORKAREA, 0, &r, 0);
1516     if (x)      *x = r.left;
1517     if (y)      *y = r.top;
1518     if (width)  *width = r.right - r.left;
1519     if (height) *height = r.bottom - r.top;
1520 #endif
1521 }
1522
1523 // ---------------------------------------------------------------------------
1524 // window information functions
1525 // ---------------------------------------------------------------------------
1526
1527 wxString WXDLLEXPORT wxGetWindowText(WXHWND hWnd)
1528 {
1529     wxString str;
1530
1531     if ( hWnd )
1532     {
1533         int len = GetWindowTextLength((HWND)hWnd) + 1;
1534         ::GetWindowText((HWND)hWnd, str.GetWriteBuf(len), len);
1535         str.UngetWriteBuf();
1536     }
1537
1538     return str;
1539 }
1540
1541 wxString WXDLLEXPORT wxGetWindowClass(WXHWND hWnd)
1542 {
1543     wxString str;
1544
1545     // MICROWIN_TODO
1546 #ifndef __WXMICROWIN__
1547     if ( hWnd )
1548     {
1549         int len = 256; // some starting value
1550
1551         for ( ;; )
1552         {
1553             int count = ::GetClassName((HWND)hWnd, str.GetWriteBuf(len), len);
1554
1555             str.UngetWriteBuf();
1556             if ( count == len )
1557             {
1558                 // the class name might have been truncated, retry with larger
1559                 // buffer
1560                 len *= 2;
1561             }
1562             else
1563             {
1564                 break;
1565             }
1566         }
1567     }
1568 #endif // !__WXMICROWIN__
1569
1570     return str;
1571 }
1572
1573 WXWORD WXDLLEXPORT wxGetWindowId(WXHWND hWnd)
1574 {
1575 #ifndef __WIN32__
1576     return (WXWORD)GetWindowWord((HWND)hWnd, GWW_ID);
1577 #else // Win32
1578     return (WXWORD)GetWindowLong((HWND)hWnd, GWL_ID);
1579 #endif // Win16/32
1580 }
1581
1582 // ----------------------------------------------------------------------------
1583 // Metafile helpers
1584 // ----------------------------------------------------------------------------
1585
1586 extern void PixelToHIMETRIC(LONG *x, LONG *y)
1587 {
1588     ScreenHDC hdcRef;
1589
1590     int iWidthMM = GetDeviceCaps(hdcRef, HORZSIZE),
1591         iHeightMM = GetDeviceCaps(hdcRef, VERTSIZE),
1592         iWidthPels = GetDeviceCaps(hdcRef, HORZRES),
1593         iHeightPels = GetDeviceCaps(hdcRef, VERTRES);
1594
1595     *x *= (iWidthMM * 100);
1596     *x /= iWidthPels;
1597     *y *= (iHeightMM * 100);
1598     *y /= iHeightPels;
1599 }
1600
1601 extern void HIMETRICToPixel(LONG *x, LONG *y)
1602 {
1603     ScreenHDC hdcRef;
1604
1605     int iWidthMM = GetDeviceCaps(hdcRef, HORZSIZE),
1606         iHeightMM = GetDeviceCaps(hdcRef, VERTSIZE),
1607         iWidthPels = GetDeviceCaps(hdcRef, HORZRES),
1608         iHeightPels = GetDeviceCaps(hdcRef, VERTRES);
1609
1610     *x *= iWidthPels;
1611     *x /= (iWidthMM * 100);
1612     *y *= iHeightPels;
1613     *y /= (iHeightMM * 100);
1614 }
1615
1616 #endif // wxUSE_GUI
1617
1618 #ifdef __WXMICROWIN__
1619 int wxGetOsVersion(int *majorVsn, int *minorVsn)
1620 {
1621     // MICROWIN_TODO
1622     if (majorVsn) *majorVsn = 0;
1623     if (minorVsn) *minorVsn = 0;
1624     return wxUNIX;
1625 }
1626 #endif // __WXMICROWIN__
1627
1628 // ----------------------------------------------------------------------------
1629 // Win32 codepage conversion functions
1630 // ----------------------------------------------------------------------------
1631
1632 #if defined(__WIN32__) && !defined(__WXMICROWIN__)
1633
1634 // wxGetNativeFontEncoding() doesn't exist neither in wxBase nor in wxUniv
1635 #if wxUSE_GUI && !defined(__WXUNIVERSAL__)
1636
1637 #include "wx/fontmap.h"
1638
1639 // VZ: the new version of wxCharsetToCodepage() is more politically correct
1640 //     and should work on other Windows versions as well but the old version is
1641 //     still needed for !wxUSE_FONTMAP || !wxUSE_GUI case
1642
1643 extern long wxEncodingToCodepage(wxFontEncoding encoding)
1644 {
1645     // translate encoding into the Windows CHARSET
1646     wxNativeEncodingInfo natveEncInfo;
1647     if ( !wxGetNativeFontEncoding(encoding, &natveEncInfo) )
1648         return -1;
1649
1650     // translate CHARSET to code page
1651     CHARSETINFO csetInfo;
1652     if ( !::TranslateCharsetInfo((DWORD *)(DWORD)natveEncInfo.charset,
1653                                  &csetInfo,
1654                                  TCI_SRCCHARSET) )
1655     {
1656         wxLogLastError(_T("TranslateCharsetInfo(TCI_SRCCHARSET)"));
1657
1658         return -1;
1659     }
1660
1661     return csetInfo.ciACP;
1662 }
1663
1664 #if wxUSE_FONTMAP
1665
1666 extern long wxCharsetToCodepage(const wxChar *name)
1667 {
1668     // first get the font encoding for this charset
1669     if ( !name )
1670         return -1;
1671
1672     wxFontEncoding enc = wxFontMapper::Get()->CharsetToEncoding(name, FALSE);
1673     if ( enc == wxFONTENCODING_SYSTEM )
1674         return -1;
1675
1676     // the use the helper function
1677     return wxEncodingToCodepage(enc);
1678 }
1679
1680 #endif // wxUSE_FONTMAP
1681
1682 #endif // wxUSE_GUI
1683
1684 // include old wxCharsetToCodepage() by OK if needed
1685 #if !wxUSE_GUI || !wxUSE_FONTMAP
1686
1687 #include "wx/msw/registry.h"
1688
1689 // this should work if Internet Exploiter is installed
1690 extern long wxCharsetToCodepage(const wxChar *name)
1691 {
1692     if (!name)
1693         return GetACP();
1694
1695     long CP=-1;
1696
1697     wxString cn(name);
1698     do {
1699         wxString path(wxT("MIME\\Database\\Charset\\"));
1700         path += cn;
1701         wxRegKey key(wxRegKey::HKCR, path);
1702
1703         if (!key.Exists()) break;
1704
1705         // two cases: either there's an AliasForCharset string,
1706         // or there are Codepage and InternetEncoding dwords.
1707         // The InternetEncoding gives us the actual encoding,
1708         // the Codepage just says which Windows character set to
1709         // use when displaying the data.
1710         if (key.HasValue(wxT("InternetEncoding")) &&
1711             key.QueryValue(wxT("InternetEncoding"), &CP)) break;
1712
1713         // no encoding, see if it's an alias
1714         if (!key.HasValue(wxT("AliasForCharset")) ||
1715             !key.QueryValue(wxT("AliasForCharset"), cn)) break;
1716     } while (1);
1717
1718     return CP;
1719 }
1720
1721 #endif // !wxUSE_GUI || !wxUSE_FONTMAP
1722
1723 #endif // Win32
1724