src/common/utilscmn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/utilscmn.cpp
   3 // Purpose:     Miscellaneous utility functions and classes
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     29/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1998 Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #ifndef WX_PRECOMP
  28     #include "wx/app.h"
  29     #include "wx/string.h"
  30     #include "wx/utils.h"
  31     #include "wx/intl.h"
  32     #include "wx/log.h"
  33
  34     #if wxUSE_GUI
  35         #include "wx/window.h"
  36         #include "wx/frame.h"
  37         #include "wx/menu.h"
  38         #include "wx/msgdlg.h"
  39         #include "wx/textdlg.h"
  40         #include "wx/textctrl.h"    // for wxTE_PASSWORD
  41         #if wxUSE_ACCEL
  42             #include "wx/menuitem.h"
  43             #include "wx/accel.h"
  44         #endif // wxUSE_ACCEL
  45     #endif // wxUSE_GUI
  46 #endif // WX_PRECOMP
  47
  48 #include "wx/apptrait.h"
  49
  50 #include "wx/process.h"
  51 #include "wx/txtstrm.h"
  52 #include "wx/uri.h"
  53 #include "wx/mimetype.h"
  54 #include "wx/config.h"
  55
  56 #if defined(__WXWINCE__) && wxUSE_DATETIME
  57 #include "wx/datetime.h"
  58 #endif
  59
  60 #include <ctype.h>
  61 #include <stdio.h>
  62 #include <stdlib.h>
  63 #include <string.h>
  64
  65 #if !defined(__WATCOMC__)
  66     #if !(defined(_MSC_VER) && (_MSC_VER > 800))
  67         #include <errno.h>
  68     #endif
  69 #endif
  70
  71 #if wxUSE_GUI
  72     #include "wx/colordlg.h"
  73     #include "wx/fontdlg.h"
  74     #include "wx/notebook.h"
  75     #include "wx/frame.h"
  76     #include "wx/statusbr.h"
  77 #endif // wxUSE_GUI
  78
  79 #ifndef __WXWINCE__
  80 #include <time.h>
  81 #else
  82 #include "wx/msw/wince/time.h"
  83 #endif
  84
  85 #if !defined(__MWERKS__) && !defined(__WXWINCE__)
  86     #include <sys/types.h>
  87     #include <sys/stat.h>
  88 #endif
  89
  90 #if defined(__WXMSW__)
  91     #include "wx/msw/private.h"
  92     #include "wx/msw/registry.h"
  93 #endif
  94
  95 #if wxUSE_BASE
  96
  97 // ----------------------------------------------------------------------------
  98 // common data
  99 // ----------------------------------------------------------------------------
 100
 101 // ============================================================================
 102 // implementation
 103 // ============================================================================
 104
 105 #if WXWIN_COMPATIBILITY_2_4
 106
 107 wxChar *
 108 copystring (const wxChar *s)
 109 {
 110     if (s == NULL) s = wxEmptyString;
 111     size_t len = wxStrlen (s) + 1;
 112
 113     wxChar *news = new wxChar[len];
 114     memcpy (news, s, len * sizeof(wxChar));    // Should be the fastest
 115
 116     return news;
 117 }
 118
 119 #endif // WXWIN_COMPATIBILITY_2_4
 120
 121 // ----------------------------------------------------------------------------
 122 // String <-> Number conversions (deprecated)
 123 // ----------------------------------------------------------------------------
 124
 125 #if WXWIN_COMPATIBILITY_2_4
 126
 127 WXDLLIMPEXP_DATA_BASE(const wxChar *) wxFloatToStringStr = wxT("%.2f");
 128 WXDLLIMPEXP_DATA_BASE(const wxChar *) wxDoubleToStringStr = wxT("%.2f");
 129
 130 void
 131 StringToFloat (const wxChar *s, float *number)
 132 {
 133     if (s && *s && number)
 134         *number = (float) wxStrtod (s, (wxChar **) NULL);
 135 }
 136
 137 void
 138 StringToDouble (const wxChar *s, double *number)
 139 {
 140     if (s && *s && number)
 141         *number = wxStrtod (s, (wxChar **) NULL);
 142 }
 143
 144 wxChar *
 145 FloatToString (float number, const wxChar *fmt)
 146 {
 147     static wxChar buf[256];
 148
 149     wxSprintf (buf, fmt, number);
 150     return buf;
 151 }
 152
 153 wxChar *
 154 DoubleToString (double number, const wxChar *fmt)
 155 {
 156     static wxChar buf[256];
 157
 158     wxSprintf (buf, fmt, number);
 159     return buf;
 160 }
 161
 162 void
 163 StringToInt (const wxChar *s, int *number)
 164 {
 165     if (s && *s && number)
 166         *number = (int) wxStrtol (s, (wxChar **) NULL, 10);
 167 }
 168
 169 void
 170 StringToLong (const wxChar *s, long *number)
 171 {
 172     if (s && *s && number)
 173         *number = wxStrtol (s, (wxChar **) NULL, 10);
 174 }
 175
 176 wxChar *
 177 IntToString (int number)
 178 {
 179     static wxChar buf[20];
 180
 181     wxSprintf (buf, wxT("%d"), number);
 182     return buf;
 183 }
 184
 185 wxChar *
 186 LongToString (long number)
 187 {
 188     static wxChar buf[20];
 189
 190     wxSprintf (buf, wxT("%ld"), number);
 191     return buf;
 192 }
 193
 194 #endif // WXWIN_COMPATIBILITY_2_4
 195
 196 // Array used in DecToHex conversion routine.
 197 static wxChar hexArray[] = wxT("0123456789ABCDEF");
 198
 199 // Convert 2-digit hex number to decimal
 200 int wxHexToDec(const wxString& buf)
 201 {
 202     int firstDigit, secondDigit;
 203
 204     if (buf.GetChar(0) >= wxT('A'))
 205         firstDigit = buf.GetChar(0) - wxT('A') + 10;
 206     else
 207        firstDigit = buf.GetChar(0) - wxT('0');
 208
 209     if (buf.GetChar(1) >= wxT('A'))
 210         secondDigit = buf.GetChar(1) - wxT('A') + 10;
 211     else
 212         secondDigit = buf.GetChar(1) - wxT('0');
 213
 214     return (firstDigit & 0xF) * 16 + (secondDigit & 0xF );
 215 }
 216
 217 // Convert decimal integer to 2-character hex string
 218 void wxDecToHex(int dec, wxChar *buf)
 219 {
 220     int firstDigit = (int)(dec/16.0);
 221     int secondDigit = (int)(dec - (firstDigit*16.0));
 222     buf[0] = hexArray[firstDigit];
 223     buf[1] = hexArray[secondDigit];
 224     buf[2] = 0;
 225 }
 226
 227 // Convert decimal integer to 2-character hex string
 228 wxString wxDecToHex(int dec)
 229 {
 230     wxChar buf[3];
 231     wxDecToHex(dec, buf);
 232     return wxString(buf);
 233 }
 234
 235 // ----------------------------------------------------------------------------
 236 // misc functions
 237 // ----------------------------------------------------------------------------
 238
 239 // Return the current date/time
 240 wxString wxNow()
 241 {
 242 #ifdef __WXWINCE__
 243 #if wxUSE_DATETIME
 244     wxDateTime now = wxDateTime::Now();
 245     return now.Format();
 246 #else
 247     return wxEmptyString;
 248 #endif
 249 #else
 250     time_t now = time((time_t *) NULL);
 251     char *date = ctime(&now);
 252     date[24] = '\0';
 253     return wxString::FromAscii(date);
 254 #endif
 255 }
 256
 257 void wxUsleep(unsigned long milliseconds)
 258 {
 259     wxMilliSleep(milliseconds);
 260 }
 261
 262 const wxChar *wxGetInstallPrefix()
 263 {
 264     wxString prefix;
 265
 266     if ( wxGetEnv(wxT("WXPREFIX"), &prefix) )
 267         return prefix.c_str();
 268
 269 #ifdef wxINSTALL_PREFIX
 270     return wxT(wxINSTALL_PREFIX);
 271 #else
 272     return wxEmptyString;
 273 #endif
 274 }
 275
 276 wxString wxGetDataDir()
 277 {
 278     wxString dir = wxGetInstallPrefix();
 279     dir <<  wxFILE_SEP_PATH << wxT("share") << wxFILE_SEP_PATH << wxT("wx");
 280     return dir;
 281 }
 282
 283 int wxGetOsVersion(int *verMaj, int *verMin)
 284 {
 285     // we want this function to work even if there is no wxApp
 286     wxConsoleAppTraits traitsConsole;
 287     wxAppTraits *traits = wxTheApp ? wxTheApp->GetTraits() : NULL;
 288     if ( ! traits )
 289         traits = &traitsConsole;
 290
 291     wxToolkitInfo& info = traits->GetToolkitInfo();
 292     if ( verMaj )
 293         *verMaj = info.versionMajor;
 294     if ( verMin )
 295         *verMin = info.versionMinor;
 296     return info.os;
 297 }
 298
 299 // ----------------------------------------------------------------------------
 300 // network and user id functions
 301 // ----------------------------------------------------------------------------
 302
 303 // Get Full RFC822 style email address
 304 bool wxGetEmailAddress(wxChar *address, int maxSize)
 305 {
 306     wxString email = wxGetEmailAddress();
 307     if ( !email )
 308         return false;
 309
 310     wxStrncpy(address, email, maxSize - 1);
 311     address[maxSize - 1] = wxT('\0');
 312
 313     return true;
 314 }
 315
 316 wxString wxGetEmailAddress()
 317 {
 318     wxString email;
 319
 320     wxString host = wxGetFullHostName();
 321     if ( !host.empty() )
 322     {
 323         wxString user = wxGetUserId();
 324         if ( !user.empty() )
 325         {
 326             email << user << wxT('@') << host;
 327         }
 328     }
 329
 330     return email;
 331 }
 332
 333 wxString wxGetUserId()
 334 {
 335     static const int maxLoginLen = 256; // FIXME arbitrary number
 336
 337     wxString buf;
 338     bool ok = wxGetUserId(wxStringBuffer(buf, maxLoginLen), maxLoginLen);
 339
 340     if ( !ok )
 341         buf.Empty();
 342
 343     return buf;
 344 }
 345
 346 wxString wxGetUserName()
 347 {
 348     static const int maxUserNameLen = 1024; // FIXME arbitrary number
 349
 350     wxString buf;
 351     bool ok = wxGetUserName(wxStringBuffer(buf, maxUserNameLen), maxUserNameLen);
 352
 353     if ( !ok )
 354         buf.Empty();
 355
 356     return buf;
 357 }
 358
 359 wxString wxGetHostName()
 360 {
 361     static const size_t hostnameSize = 257;
 362
 363     wxString buf;
 364     bool ok = wxGetHostName(wxStringBuffer(buf, hostnameSize), hostnameSize);
 365
 366     if ( !ok )
 367         buf.Empty();
 368
 369     return buf;
 370 }
 371
 372 wxString wxGetFullHostName()
 373 {
 374     static const size_t hostnameSize = 257;
 375
 376     wxString buf;
 377     bool ok = wxGetFullHostName(wxStringBuffer(buf, hostnameSize), hostnameSize);
 378
 379     if ( !ok )
 380         buf.Empty();
 381
 382     return buf;
 383 }
 384
 385 wxString wxGetHomeDir()
 386 {
 387     wxString home;
 388     wxGetHomeDir(&home);
 389
 390     return home;
 391 }
 392
 393 #if 0
 394
 395 wxString wxGetCurrentDir()
 396 {
 397     wxString dir;
 398     size_t len = 1024;
 399     bool ok;
 400     do
 401     {
 402         ok = getcwd(dir.GetWriteBuf(len + 1), len) != NULL;
 403         dir.UngetWriteBuf();
 404
 405         if ( !ok )
 406         {
 407             if ( errno != ERANGE )
 408             {
 409                 wxLogSysError(_T("Failed to get current directory"));
 410
 411                 return wxEmptyString;
 412             }
 413             else
 414             {
 415                 // buffer was too small, retry with a larger one
 416                 len *= 2;
 417             }
 418         }
 419         //else: ok
 420     } while ( !ok );
 421
 422     return dir;
 423 }
 424
 425 #endif // 0
 426
 427 // ----------------------------------------------------------------------------
 428 // wxExecute
 429 // ----------------------------------------------------------------------------
 430
 431 // wxDoExecuteWithCapture() helper: reads an entire stream into one array
 432 //
 433 // returns true if ok, false if error
 434 #if wxUSE_STREAMS
 435 static bool ReadAll(wxInputStream *is, wxArrayString& output)
 436 {
 437     wxCHECK_MSG( is, false, _T("NULL stream in wxExecute()?") );
 438
 439     // the stream could be already at EOF or in wxSTREAM_BROKEN_PIPE state
 440     is->Reset();
 441
 442     wxTextInputStream tis(*is);
 443
 444     bool cont = true;
 445     while ( cont )
 446     {
 447         wxString line = tis.ReadLine();
 448         if ( is->Eof() )
 449             break;
 450
 451         if ( !*is )
 452         {
 453             cont = false;
 454         }
 455         else
 456         {
 457             output.Add(line);
 458         }
 459     }
 460
 461     return cont;
 462 }
 463 #endif // wxUSE_STREAMS
 464
 465 // this is a private function because it hasn't a clean interface: the first
 466 // array is passed by reference, the second by pointer - instead we have 2
 467 // public versions of wxExecute() below
 468 static long wxDoExecuteWithCapture(const wxString& command,
 469                                    wxArrayString& output,
 470                                    wxArrayString* error,
 471                                    int flags)
 472 {
 473     // create a wxProcess which will capture the output
 474     wxProcess *process = new wxProcess;
 475     process->Redirect();
 476
 477     long rc = wxExecute(command, wxEXEC_SYNC | flags, process);
 478
 479 #if wxUSE_STREAMS
 480     if ( rc != -1 )
 481     {
 482         if ( !ReadAll(process->GetInputStream(), output) )
 483             rc = -1;
 484
 485         if ( error )
 486         {
 487             if ( !ReadAll(process->GetErrorStream(), *error) )
 488                 rc = -1;
 489         }
 490
 491     }
 492 #else
 493     wxUnusedVar(output);
 494     wxUnusedVar(error);
 495 #endif // wxUSE_STREAMS/!wxUSE_STREAMS
 496
 497     delete process;
 498
 499     return rc;
 500 }
 501
 502 long wxExecute(const wxString& command, wxArrayString& output, int flags)
 503 {
 504     return wxDoExecuteWithCapture(command, output, NULL, flags);
 505 }
 506
 507 long wxExecute(const wxString& command,
 508                wxArrayString& output,
 509                wxArrayString& error,
 510                int flags)
 511 {
 512     return wxDoExecuteWithCapture(command, output, &error, flags);
 513 }
 514
 515 // ----------------------------------------------------------------------------
 516 // Launch default browser
 517 // ----------------------------------------------------------------------------
 518
 519 bool wxLaunchDefaultBrowser(const wxString& urlOrig, int flags)
 520 {
 521     wxUnusedVar(flags);
 522
 523     // set the scheme of url to http if it does not have one
 524     wxString url(urlOrig);
 525     if ( !wxURI(url).HasScheme() )
 526         url.Prepend(wxT("http://"));
 527
 528 #if defined(__WXMSW__)
 529     if ( flags & wxBROWSER_NEW_WINDOW )
 530     {
 531         // ShellExecuteEx() opens the URL in an existing window by default so
 532         // we can't use it if we need a new window
 533         wxRegKey key(wxRegKey::HKCR, url.BeforeFirst(':') + _T("\\shell\\open"));
 534         if ( key.Exists() )
 535         {
 536             wxRegKey keyDDE(key, wxT("DDEExec"));
 537             if ( keyDDE.Exists() )
 538             {
 539                 const wxString ddeTopic = wxRegKey(keyDDE, wxT("topic"));
 540
 541                 // we only know the syntax of WWW_OpenURL DDE request for IE,
 542                 // optimistically assume that all other browsers are compatible
 543                 // with it
 544                 wxString ddeCmd;
 545                 bool ok = ddeTopic == wxT("WWW_OpenURL");
 546                 if ( ok )
 547                 {
 548                     ddeCmd = keyDDE.QueryDefaultValue();
 549                     ok = !ddeCmd.empty();
 550                 }
 551
 552                 if ( ok )
 553                 {
 554                     // for WWW_OpenURL, the index of the window to open the URL
 555                     // in is -1 (meaning "current") by default, replace it with
 556                     // 0 which means "new" (see KB article 160957)
 557                     ok = ddeCmd.Replace(wxT("-1"), wxT("0"),
 558                                         false /* only first occurence */) == 1;
 559                 }
 560
 561                 if ( ok )
 562                 {
 563                     // and also replace the parameters: the topic should
 564                     // contain a placeholder for the URL
 565                     ok = ddeCmd.Replace(wxT("%1"), url, false) == 1;
 566                 }
 567
 568                 if ( ok )
 569                 {
 570                     // try to send it the DDE request now but ignore the errors
 571                     wxLogNull noLog;
 572
 573                     const wxString ddeServer = wxRegKey(keyDDE, wxT("application"));
 574                     if ( wxExecuteDDE(ddeServer, ddeTopic, ddeCmd) )
 575                         return true;
 576
 577                     // this is not necessarily an error: maybe browser is
 578                     // simply not running, but no matter, in any case we're
 579                     // going to launch it using ShellExecuteEx() below now and
 580                     // we shouldn't try to open a new window if we open a new
 581                     // browser anyhow
 582                 }
 583             }
 584         }
 585     }
 586
 587     WinStruct<SHELLEXECUTEINFO> sei;
 588     sei.lpFile = url.c_str();
 589     sei.lpVerb = _T("open");
 590     sei.nShow = SW_SHOWNORMAL;
 591
 592     ::ShellExecuteEx(&sei);
 593
 594     const int nResult = (int) sei.hInstApp;
 595
 596     // Firefox returns file not found for some reason, so make an exception
 597     // for it
 598     if ( nResult > 32 || nResult == SE_ERR_FNF )
 599     {
 600 #ifdef __WXDEBUG__
 601         // Log something if SE_ERR_FNF happens
 602         if ( nResult == SE_ERR_FNF )
 603             wxLogDebug(wxT("SE_ERR_FNF from ShellExecute -- maybe FireFox?"));
 604 #endif // __WXDEBUG__
 605         return true;
 606     }
 607 #elif wxUSE_MIMETYPE
 608     // Non-windows way
 609     wxFileType *ft = wxTheMimeTypesManager->GetFileTypeFromExtension (_T("html"));
 610     if ( ft )
 611     {
 612         wxString mt;
 613         ft->GetMimeType(&mt);
 614
 615         wxString cmd;
 616         bool ok = ft->GetOpenCommand(&cmd, wxFileType::MessageParameters(url));
 617         delete ft;
 618
 619         if ( !ok || cmd.empty() )
 620         {
 621             // fallback to checking for the BROWSER environment variable
 622             cmd = wxGetenv(wxT("BROWSER"));
 623             if ( !cmd.empty() )
 624                 cmd << _T(' ') << url;
 625         }
 626
 627         if ( !cmd.empty() && wxExecute(cmd) )
 628             return true;
 629     }
 630     else // no file type for html extension
 631     {
 632         wxLogError(_T("No default application configured for HTML files."));
 633     }
 634 #endif // !wxUSE_MIMETYPE && !__WXMSW__
 635
 636     wxLogSysError(_T("Failed to open URL \"%s\" in default browser."),
 637                   url.c_str());
 638
 639     return false;
 640 }
 641
 642 // ----------------------------------------------------------------------------
 643 // wxApp::Yield() wrappers for backwards compatibility
 644 // ----------------------------------------------------------------------------
 645
 646 bool wxYield()
 647 {
 648     return wxTheApp && wxTheApp->Yield();
 649 }
 650
 651 bool wxYieldIfNeeded()
 652 {
 653     return wxTheApp && wxTheApp->Yield(true);
 654 }
 655
 656 #endif // wxUSE_BASE
 657
 658 // ============================================================================
 659 // GUI-only functions from now on
 660 // ============================================================================
 661
 662 #if wxUSE_GUI
 663
 664 // Id generation
 665 static long wxCurrentId = 100;
 666
 667 long wxNewId()
 668 {
 669     // skip the part of IDs space that contains hard-coded values:
 670     if (wxCurrentId == wxID_LOWEST)
 671         wxCurrentId = wxID_HIGHEST + 1;
 672
 673     return wxCurrentId++;
 674 }
 675
 676 long
 677 wxGetCurrentId(void) { return wxCurrentId; }
 678
 679 void
 680 wxRegisterId (long id)
 681 {
 682   if (id >= wxCurrentId)
 683     wxCurrentId = id + 1;
 684 }
 685
 686 #if wxUSE_MENUS
 687
 688 // ----------------------------------------------------------------------------
 689 // Menu accelerators related functions
 690 // ----------------------------------------------------------------------------
 691
 692 wxChar *wxStripMenuCodes(const wxChar *in, wxChar *out)
 693 {
 694     wxString s = wxMenuItem::GetLabelFromText(in);
 695     if ( out )
 696     {
 697         // go smash their buffer if it's not big enough - I love char * params
 698         memcpy(out, s.c_str(), s.length() * sizeof(wxChar));
 699     }
 700     else
 701     {
 702         // MYcopystring - for easier search...
 703         out = new wxChar[s.length() + 1];
 704         wxStrcpy(out, s.c_str());
 705     }
 706
 707     return out;
 708 }
 709
 710 wxString wxStripMenuCodes(const wxString& in)
 711 {
 712     wxString out;
 713
 714     size_t len = in.length();
 715     out.reserve(len);
 716
 717     for ( size_t n = 0; n < len; n++ )
 718     {
 719         wxChar ch = in[n];
 720         if ( ch == _T('&') )
 721         {
 722             // skip it, it is used to introduce the accel char (or to quote
 723             // itself in which case it should still be skipped): note that it
 724             // can't be the last character of the string
 725             if ( ++n == len )
 726             {
 727                 wxLogDebug(_T("Invalid menu string '%s'"), in.c_str());
 728             }
 729             else
 730             {
 731                 // use the next char instead
 732                 ch = in[n];
 733             }
 734         }
 735         else if ( ch == _T('\t') )
 736         {
 737             // everything after TAB is accel string, exit the loop
 738             break;
 739         }
 740
 741         out += ch;
 742     }
 743
 744     return out;
 745 }
 746
 747 #endif // wxUSE_MENUS
 748
 749 // ----------------------------------------------------------------------------
 750 // Window search functions
 751 // ----------------------------------------------------------------------------
 752
 753 /*
 754  * If parent is non-NULL, look through children for a label or title
 755  * matching the specified string. If NULL, look through all top-level windows.
 756  *
 757  */
 758
 759 wxWindow *
 760 wxFindWindowByLabel (const wxString& title, wxWindow * parent)
 761 {
 762     return wxWindow::FindWindowByLabel( title, parent );
 763 }
 764
 765
 766 /*
 767  * If parent is non-NULL, look through children for a name
 768  * matching the specified string. If NULL, look through all top-level windows.
 769  *
 770  */
 771
 772 wxWindow *
 773 wxFindWindowByName (const wxString& name, wxWindow * parent)
 774 {
 775     return wxWindow::FindWindowByName( name, parent );
 776 }
 777
 778 // Returns menu item id or wxNOT_FOUND if none.
 779 int
 780 wxFindMenuItemId (wxFrame * frame, const wxString& menuString, const wxString& itemString)
 781 {
 782 #if wxUSE_MENUS
 783   wxMenuBar *menuBar = frame->GetMenuBar ();
 784   if ( menuBar )
 785       return menuBar->FindMenuItem (menuString, itemString);
 786 #endif // wxUSE_MENUS
 787
 788   return wxNOT_FOUND;
 789 }
 790
 791 // Try to find the deepest child that contains 'pt'.
 792 // We go backwards, to try to allow for controls that are spacially
 793 // within other controls, but are still siblings (e.g. buttons within
 794 // static boxes). Static boxes are likely to be created _before_ controls
 795 // that sit inside them.
 796 wxWindow* wxFindWindowAtPoint(wxWindow* win, const wxPoint& pt)
 797 {
 798     if (!win->IsShown())
 799         return NULL;
 800
 801     // Hack for wxNotebook case: at least in wxGTK, all pages
 802     // claim to be shown, so we must only deal with the selected one.
 803 #if wxUSE_NOTEBOOK
 804     if (win->IsKindOf(CLASSINFO(wxNotebook)))
 805     {
 806       wxNotebook* nb = (wxNotebook*) win;
 807       int sel = nb->GetSelection();
 808       if (sel >= 0)
 809       {
 810         wxWindow* child = nb->GetPage(sel);
 811         wxWindow* foundWin = wxFindWindowAtPoint(child, pt);
 812         if (foundWin)
 813            return foundWin;
 814       }
 815     }
 816 #endif
 817
 818     wxWindowList::compatibility_iterator node = win->GetChildren().GetLast();
 819     while (node)
 820     {
 821         wxWindow* child = node->GetData();
 822         wxWindow* foundWin = wxFindWindowAtPoint(child, pt);
 823         if (foundWin)
 824           return foundWin;
 825         node = node->GetPrevious();
 826     }
 827
 828     wxPoint pos = win->GetPosition();
 829     wxSize sz = win->GetSize();
 830     if (win->GetParent())
 831     {
 832         pos = win->GetParent()->ClientToScreen(pos);
 833     }
 834
 835     wxRect rect(pos, sz);
 836     if (rect.Inside(pt))
 837         return win;
 838     else
 839         return NULL;
 840 }
 841
 842 wxWindow* wxGenericFindWindowAtPoint(const wxPoint& pt)
 843 {
 844     // Go backwards through the list since windows
 845     // on top are likely to have been appended most
 846     // recently.
 847     wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetLast();
 848     while (node)
 849     {
 850         wxWindow* win = node->GetData();
 851         wxWindow* found = wxFindWindowAtPoint(win, pt);
 852         if (found)
 853             return found;
 854         node = node->GetPrevious();
 855     }
 856     return NULL;
 857 }
 858
 859 // ----------------------------------------------------------------------------
 860 // GUI helpers
 861 // ----------------------------------------------------------------------------
 862
 863 /*
 864  * N.B. these convenience functions must be separate from msgdlgg.cpp, textdlgg.cpp
 865  * since otherwise the generic code may be pulled in unnecessarily.
 866  */
 867
 868 #if wxUSE_MSGDLG
 869
 870 int wxMessageBox(const wxString& message, const wxString& caption, long style,
 871                  wxWindow *parent, int WXUNUSED(x), int WXUNUSED(y) )
 872 {
 873     long decorated_style = style;
 874
 875     if ( ( style & ( wxICON_EXCLAMATION | wxICON_HAND | wxICON_INFORMATION | wxICON_QUESTION ) ) == 0 )
 876     {
 877         decorated_style |= ( style & wxYES ) ? wxICON_QUESTION : wxICON_INFORMATION ;
 878     }
 879
 880     wxMessageDialog dialog(parent, message, caption, decorated_style);
 881
 882     int ans = dialog.ShowModal();
 883     switch ( ans )
 884     {
 885         case wxID_OK:
 886             return wxOK;
 887         case wxID_YES:
 888             return wxYES;
 889         case wxID_NO:
 890             return wxNO;
 891         case wxID_CANCEL:
 892             return wxCANCEL;
 893     }
 894
 895     wxFAIL_MSG( _T("unexpected return code from wxMessageDialog") );
 896
 897     return wxCANCEL;
 898 }
 899
 900 #endif // wxUSE_MSGDLG
 901
 902 #if wxUSE_TEXTDLG
 903
 904 wxString wxGetTextFromUser(const wxString& message, const wxString& caption,
 905                         const wxString& defaultValue, wxWindow *parent,
 906                         wxCoord x, wxCoord y, bool centre )
 907 {
 908     wxString str;
 909     long style = wxTextEntryDialogStyle;
 910
 911     if (centre)
 912         style |= wxCENTRE;
 913     else
 914         style &= ~wxCENTRE;
 915
 916     wxTextEntryDialog dialog(parent, message, caption, defaultValue, style, wxPoint(x, y));
 917
 918     if (dialog.ShowModal() == wxID_OK)
 919     {
 920         str = dialog.GetValue();
 921     }
 922
 923     return str;
 924 }
 925
 926 wxString wxGetPasswordFromUser(const wxString& message,
 927                                const wxString& caption,
 928                                const wxString& defaultValue,
 929                                wxWindow *parent,
 930                                wxCoord x, wxCoord y, bool centre )
 931 {
 932     wxString str;
 933     long style = wxTextEntryDialogStyle;
 934
 935     if (centre)
 936         style |= wxCENTRE;
 937     else
 938         style &= ~wxCENTRE;
 939
 940     wxPasswordEntryDialog dialog(parent, message, caption, defaultValue,
 941                              style, wxPoint(x, y));
 942     if ( dialog.ShowModal() == wxID_OK )
 943     {
 944         str = dialog.GetValue();
 945     }
 946
 947     return str;
 948 }
 949
 950 #endif // wxUSE_TEXTDLG
 951
 952 #if wxUSE_COLOURDLG
 953
 954 wxColour wxGetColourFromUser(wxWindow *parent, const wxColour& colInit)
 955 {
 956     wxColourData data;
 957     data.SetChooseFull(true);
 958     if ( colInit.Ok() )
 959     {
 960         data.SetColour((wxColour &)colInit); // const_cast
 961     }
 962
 963     wxColour colRet;
 964     wxColourDialog dialog(parent, &data);
 965     if ( dialog.ShowModal() == wxID_OK )
 966     {
 967         colRet = dialog.GetColourData().GetColour();
 968     }
 969     //else: leave it invalid
 970
 971     return colRet;
 972 }
 973
 974 #endif // wxUSE_COLOURDLG
 975
 976 #if wxUSE_FONTDLG
 977
 978 wxFont wxGetFontFromUser(wxWindow *parent, const wxFont& fontInit)
 979 {
 980     wxFontData data;
 981     if ( fontInit.Ok() )
 982     {
 983         data.SetInitialFont(fontInit);
 984     }
 985
 986     wxFont fontRet;
 987     wxFontDialog dialog(parent, data);
 988     if ( dialog.ShowModal() == wxID_OK )
 989     {
 990         fontRet = dialog.GetFontData().GetChosenFont();
 991     }
 992     //else: leave it invalid
 993
 994     return fontRet;
 995 }
 996
 997 #endif // wxUSE_FONTDLG
 998
 999 // ----------------------------------------------------------------------------
1000 // wxSafeYield and supporting functions
1001 // ----------------------------------------------------------------------------
1002
1003 void wxEnableTopLevelWindows(bool enable)
1004 {
1005     wxWindowList::compatibility_iterator node;
1006     for ( node = wxTopLevelWindows.GetFirst(); node; node = node->GetNext() )
1007         node->GetData()->Enable(enable);
1008 }
1009
1010 wxWindowDisabler::wxWindowDisabler(wxWindow *winToSkip)
1011 {
1012     // remember the top level windows which were already disabled, so that we
1013     // don't reenable them later
1014     m_winDisabled = NULL;
1015
1016     wxWindowList::compatibility_iterator node;
1017     for ( node = wxTopLevelWindows.GetFirst(); node; node = node->GetNext() )
1018     {
1019         wxWindow *winTop = node->GetData();
1020         if ( winTop == winToSkip )
1021             continue;
1022
1023         // we don't need to disable the hidden or already disabled windows
1024         if ( winTop->IsEnabled() && winTop->IsShown() )
1025         {
1026             winTop->Disable();
1027         }
1028         else
1029         {
1030             if ( !m_winDisabled )
1031             {
1032                 m_winDisabled = new wxWindowList;
1033             }
1034
1035             m_winDisabled->Append(winTop);
1036         }
1037     }
1038 }
1039
1040 wxWindowDisabler::~wxWindowDisabler()
1041 {
1042     wxWindowList::compatibility_iterator node;
1043     for ( node = wxTopLevelWindows.GetFirst(); node; node = node->GetNext() )
1044     {
1045         wxWindow *winTop = node->GetData();
1046         if ( !m_winDisabled || !m_winDisabled->Find(winTop) )
1047         {
1048             winTop->Enable();
1049         }
1050         //else: had been already disabled, don't reenable
1051     }
1052
1053     delete m_winDisabled;
1054 }
1055
1056 // Yield to other apps/messages and disable user input to all windows except
1057 // the given one
1058 bool wxSafeYield(wxWindow *win, bool onlyIfNeeded)
1059 {
1060     wxWindowDisabler wd(win);
1061
1062     bool rc;
1063     if (onlyIfNeeded)
1064         rc = wxYieldIfNeeded();
1065     else
1066         rc = wxYield();
1067
1068     return rc;
1069 }
1070
1071 // Don't synthesize KeyUp events holding down a key and producing KeyDown
1072 // events with autorepeat. On by default and always on in wxMSW. wxGTK version
1073 // in utilsgtk.cpp.
1074 #ifndef __WXGTK__
1075 bool wxSetDetectableAutoRepeat( bool WXUNUSED(flag) )
1076 {
1077     return true;    // detectable auto-repeat is the only mode MSW supports
1078 }
1079 #endif // !wxGTK
1080
1081 #endif // wxUSE_GUI