src/common/utilscmn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        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 #endif
  93
  94 #if wxUSE_BASE
  95
  96 // ----------------------------------------------------------------------------
  97 // common data
  98 // ----------------------------------------------------------------------------
  99
 100 #if WXWIN_COMPATIBILITY_2_2
 101     const wxChar *wxInternalErrorStr = wxT("wxWidgets Internal Error");
 102     const wxChar *wxFatalErrorStr = wxT("wxWidgets Fatal Error");
 103 #endif // WXWIN_COMPATIBILITY_2_2
 104
 105 // ============================================================================
 106 // implementation
 107 // ============================================================================
 108
 109 #if WXWIN_COMPATIBILITY_2_4
 110
 111 wxChar *
 112 copystring (const wxChar *s)
 113 {
 114     if (s == NULL) s = wxEmptyString;
 115     size_t len = wxStrlen (s) + 1;
 116
 117     wxChar *news = new wxChar[len];
 118     memcpy (news, s, len * sizeof(wxChar));    // Should be the fastest
 119
 120     return news;
 121 }
 122
 123 #endif // WXWIN_COMPATIBILITY_2_4
 124
 125 // ----------------------------------------------------------------------------
 126 // String <-> Number conversions (deprecated)
 127 // ----------------------------------------------------------------------------
 128
 129 #if WXWIN_COMPATIBILITY_2_4
 130
 131 WXDLLIMPEXP_DATA_BASE(const wxChar *) wxFloatToStringStr = wxT("%.2f");
 132 WXDLLIMPEXP_DATA_BASE(const wxChar *) wxDoubleToStringStr = wxT("%.2f");
 133
 134 void
 135 StringToFloat (const wxChar *s, float *number)
 136 {
 137     if (s && *s && number)
 138         *number = (float) wxStrtod (s, (wxChar **) NULL);
 139 }
 140
 141 void
 142 StringToDouble (const wxChar *s, double *number)
 143 {
 144     if (s && *s && number)
 145         *number = wxStrtod (s, (wxChar **) NULL);
 146 }
 147
 148 wxChar *
 149 FloatToString (float number, const wxChar *fmt)
 150 {
 151     static wxChar buf[256];
 152
 153     wxSprintf (buf, fmt, number);
 154     return buf;
 155 }
 156
 157 wxChar *
 158 DoubleToString (double number, const wxChar *fmt)
 159 {
 160     static wxChar buf[256];
 161
 162     wxSprintf (buf, fmt, number);
 163     return buf;
 164 }
 165
 166 void
 167 StringToInt (const wxChar *s, int *number)
 168 {
 169     if (s && *s && number)
 170         *number = (int) wxStrtol (s, (wxChar **) NULL, 10);
 171 }
 172
 173 void
 174 StringToLong (const wxChar *s, long *number)
 175 {
 176     if (s && *s && number)
 177         *number = wxStrtol (s, (wxChar **) NULL, 10);
 178 }
 179
 180 wxChar *
 181 IntToString (int number)
 182 {
 183     static wxChar buf[20];
 184
 185     wxSprintf (buf, wxT("%d"), number);
 186     return buf;
 187 }
 188
 189 wxChar *
 190 LongToString (long number)
 191 {
 192     static wxChar buf[20];
 193
 194     wxSprintf (buf, wxT("%ld"), number);
 195     return buf;
 196 }
 197
 198 #endif // WXWIN_COMPATIBILITY_2_4
 199
 200 // Array used in DecToHex conversion routine.
 201 static wxChar hexArray[] = wxT("0123456789ABCDEF");
 202
 203 // Convert 2-digit hex number to decimal
 204 int wxHexToDec(const wxString& buf)
 205 {
 206     int firstDigit, secondDigit;
 207
 208     if (buf.GetChar(0) >= wxT('A'))
 209         firstDigit = buf.GetChar(0) - wxT('A') + 10;
 210     else
 211        firstDigit = buf.GetChar(0) - wxT('0');
 212
 213     if (buf.GetChar(1) >= wxT('A'))
 214         secondDigit = buf.GetChar(1) - wxT('A') + 10;
 215     else
 216         secondDigit = buf.GetChar(1) - wxT('0');
 217
 218     return (firstDigit & 0xF) * 16 + (secondDigit & 0xF );
 219 }
 220
 221 // Convert decimal integer to 2-character hex string
 222 void wxDecToHex(int dec, wxChar *buf)
 223 {
 224     int firstDigit = (int)(dec/16.0);
 225     int secondDigit = (int)(dec - (firstDigit*16.0));
 226     buf[0] = hexArray[firstDigit];
 227     buf[1] = hexArray[secondDigit];
 228     buf[2] = 0;
 229 }
 230
 231 // Convert decimal integer to 2-character hex string
 232 wxString wxDecToHex(int dec)
 233 {
 234     wxChar buf[3];
 235     wxDecToHex(dec, buf);
 236     return wxString(buf);
 237 }
 238
 239 // ----------------------------------------------------------------------------
 240 // misc functions
 241 // ----------------------------------------------------------------------------
 242
 243 // Return the current date/time
 244 wxString wxNow()
 245 {
 246 #ifdef __WXWINCE__
 247 #if wxUSE_DATETIME
 248     wxDateTime now = wxDateTime::Now();
 249     return now.Format();
 250 #else
 251     return wxEmptyString;
 252 #endif
 253 #else
 254     time_t now = time((time_t *) NULL);
 255     char *date = ctime(&now);
 256     date[24] = '\0';
 257     return wxString::FromAscii(date);
 258 #endif
 259 }
 260
 261 void wxUsleep(unsigned long milliseconds)
 262 {
 263     wxMilliSleep(milliseconds);
 264 }
 265
 266 const wxChar *wxGetInstallPrefix()
 267 {
 268     wxString prefix;
 269
 270     if ( wxGetEnv(wxT("WXPREFIX"), &prefix) )
 271         return prefix.c_str();
 272
 273 #ifdef wxINSTALL_PREFIX
 274     return wxT(wxINSTALL_PREFIX);
 275 #else
 276     return wxEmptyString;
 277 #endif
 278 }
 279
 280 wxString wxGetDataDir()
 281 {
 282     wxString dir = wxGetInstallPrefix();
 283     dir <<  wxFILE_SEP_PATH << wxT("share") << wxFILE_SEP_PATH << wxT("wx");
 284     return dir;
 285 }
 286
 287 int wxGetOsVersion(int *verMaj, int *verMin)
 288 {
 289     // we want this function to work even if there is no wxApp
 290     wxConsoleAppTraits traitsConsole;
 291     wxAppTraits *traits = wxTheApp ? wxTheApp->GetTraits() : NULL;
 292     if ( ! traits )
 293         traits = &traitsConsole;
 294
 295     wxToolkitInfo& info = traits->GetToolkitInfo();
 296     if ( verMaj )
 297         *verMaj = info.versionMajor;
 298     if ( verMin )
 299         *verMin = info.versionMinor;
 300     return info.os;
 301 }
 302
 303 // ----------------------------------------------------------------------------
 304 // network and user id functions
 305 // ----------------------------------------------------------------------------
 306
 307 // Get Full RFC822 style email address
 308 bool wxGetEmailAddress(wxChar *address, int maxSize)
 309 {
 310     wxString email = wxGetEmailAddress();
 311     if ( !email )
 312         return false;
 313
 314     wxStrncpy(address, email, maxSize - 1);
 315     address[maxSize - 1] = wxT('\0');
 316
 317     return true;
 318 }
 319
 320 wxString wxGetEmailAddress()
 321 {
 322     wxString email;
 323
 324     wxString host = wxGetFullHostName();
 325     if ( !host.empty() )
 326     {
 327         wxString user = wxGetUserId();
 328         if ( !user.empty() )
 329         {
 330             email << user << wxT('@') << host;
 331         }
 332     }
 333
 334     return email;
 335 }
 336
 337 wxString wxGetUserId()
 338 {
 339     static const int maxLoginLen = 256; // FIXME arbitrary number
 340
 341     wxString buf;
 342     bool ok = wxGetUserId(wxStringBuffer(buf, maxLoginLen), maxLoginLen);
 343
 344     if ( !ok )
 345         buf.Empty();
 346
 347     return buf;
 348 }
 349
 350 wxString wxGetUserName()
 351 {
 352     static const int maxUserNameLen = 1024; // FIXME arbitrary number
 353
 354     wxString buf;
 355     bool ok = wxGetUserName(wxStringBuffer(buf, maxUserNameLen), maxUserNameLen);
 356
 357     if ( !ok )
 358         buf.Empty();
 359
 360     return buf;
 361 }
 362
 363 wxString wxGetHostName()
 364 {
 365     static const size_t hostnameSize = 257;
 366
 367     wxString buf;
 368     bool ok = wxGetHostName(wxStringBuffer(buf, hostnameSize), hostnameSize);
 369
 370     if ( !ok )
 371         buf.Empty();
 372
 373     return buf;
 374 }
 375
 376 wxString wxGetFullHostName()
 377 {
 378     static const size_t hostnameSize = 257;
 379
 380     wxString buf;
 381     bool ok = wxGetFullHostName(wxStringBuffer(buf, hostnameSize), hostnameSize);
 382
 383     if ( !ok )
 384         buf.Empty();
 385
 386     return buf;
 387 }
 388
 389 wxString wxGetHomeDir()
 390 {
 391     wxString home;
 392     wxGetHomeDir(&home);
 393
 394     return home;
 395 }
 396
 397 #if 0
 398
 399 wxString wxGetCurrentDir()
 400 {
 401     wxString dir;
 402     size_t len = 1024;
 403     bool ok;
 404     do
 405     {
 406         ok = getcwd(dir.GetWriteBuf(len + 1), len) != NULL;
 407         dir.UngetWriteBuf();
 408
 409         if ( !ok )
 410         {
 411             if ( errno != ERANGE )
 412             {
 413                 wxLogSysError(_T("Failed to get current directory"));
 414
 415                 return wxEmptyString;
 416             }
 417             else
 418             {
 419                 // buffer was too small, retry with a larger one
 420                 len *= 2;
 421             }
 422         }
 423         //else: ok
 424     } while ( !ok );
 425
 426     return dir;
 427 }
 428
 429 #endif // 0
 430
 431 // ----------------------------------------------------------------------------
 432 // wxExecute
 433 // ----------------------------------------------------------------------------
 434
 435 // wxDoExecuteWithCapture() helper: reads an entire stream into one array
 436 //
 437 // returns true if ok, false if error
 438 #if wxUSE_STREAMS
 439 static bool ReadAll(wxInputStream *is, wxArrayString& output)
 440 {
 441     wxCHECK_MSG( is, false, _T("NULL stream in wxExecute()?") );
 442
 443     // the stream could be already at EOF or in wxSTREAM_BROKEN_PIPE state
 444     is->Reset();
 445
 446     wxTextInputStream tis(*is);
 447
 448     bool cont = true;
 449     while ( cont )
 450     {
 451         wxString line = tis.ReadLine();
 452         if ( is->Eof() )
 453             break;
 454
 455         if ( !*is )
 456         {
 457             cont = false;
 458         }
 459         else
 460         {
 461             output.Add(line);
 462         }
 463     }
 464
 465     return cont;
 466 }
 467 #endif // wxUSE_STREAMS
 468
 469 // this is a private function because it hasn't a clean interface: the first
 470 // array is passed by reference, the second by pointer - instead we have 2
 471 // public versions of wxExecute() below
 472 static long wxDoExecuteWithCapture(const wxString& command,
 473                                    wxArrayString& output,
 474                                    wxArrayString* error,
 475                                    int flags)
 476 {
 477     // create a wxProcess which will capture the output
 478     wxProcess *process = new wxProcess;
 479     process->Redirect();
 480
 481     long rc = wxExecute(command, wxEXEC_SYNC | flags, process);
 482
 483 #if wxUSE_STREAMS
 484     if ( rc != -1 )
 485     {
 486         if ( !ReadAll(process->GetInputStream(), output) )
 487             rc = -1;
 488
 489         if ( error )
 490         {
 491             if ( !ReadAll(process->GetErrorStream(), *error) )
 492                 rc = -1;
 493         }
 494
 495     }
 496 #else
 497     wxUnusedVar(output);
 498     wxUnusedVar(error);
 499 #endif // wxUSE_STREAMS/!wxUSE_STREAMS
 500
 501     delete process;
 502
 503     return rc;
 504 }
 505
 506 long wxExecute(const wxString& command, wxArrayString& output, int flags)
 507 {
 508     return wxDoExecuteWithCapture(command, output, NULL, flags);
 509 }
 510
 511 long wxExecute(const wxString& command,
 512                wxArrayString& output,
 513                wxArrayString& error,
 514                int flags)
 515 {
 516     return wxDoExecuteWithCapture(command, output, &error, flags);
 517 }
 518
 519 // ----------------------------------------------------------------------------
 520 // Launch default browser
 521 // ----------------------------------------------------------------------------
 522
 523 bool wxLaunchDefaultBrowser(const wxString& urlOrig, int flags)
 524 {
 525     wxUnusedVar(flags);
 526
 527     // set the scheme of url to http if it does not have one
 528     wxString url(urlOrig);
 529     if ( !wxURI(url).HasScheme() )
 530         url.Prepend(wxT("http://"));
 531
 532 #if defined(__WXMSW__)
 533     if ( flags & wxBROWSER_NEW_WINDOW )
 534     {
 535         // ShellExecuteEx() opens the URL in an existing window by default so
 536         // we can't use it if we need a new window
 537         wxRegKey key(wxRegKey::HKCR, url.BeforeFirst(':') + _T("\\shell\\open"));
 538         if ( key.Exists() )
 539         {
 540             wxRegKey keyDDE(key, wxT("DDEExec"));
 541             if ( keyDDE.Exists() )
 542             {
 543                 const wxString ddeTopic = wxRegKey(keyDDE, wxT("topic"));
 544
 545                 // we only know the syntax of WWW_OpenURL DDE request for IE,
 546                 // optimistically assume that all other browsers are compatible
 547                 // with it
 548                 wxString ddeCmd;
 549                 bool ok = ddeTopic == wxT("WWW_OpenURL");
 550                 if ( ok )
 551                 {
 552                     ddeCmd = keyDDE.QueryDefaultValue();
 553                     ok = !ddeCmd.empty();
 554                 }
 555
 556                 if ( ok )
 557                 {
 558                     // for WWW_OpenURL, the index of the window to open the URL
 559                     // in is -1 (meaning "current") by default, replace it with
 560                     // 0 which means "new" (see KB article 160957)
 561                     ok = ddeCmd.Replace(wxT("-1"), wxT("0"),
 562                                         false /* only first occurence */) == 1;
 563                 }
 564
 565                 if ( ok )
 566                 {
 567                     // and also replace the parameters: the topic should
 568                     // contain a placeholder for the URL
 569                     ok = ddeCmd.Replace(wxT("%1"), url, false) == 1;
 570                 }
 571
 572                 if ( ok )
 573                 {
 574                     // try to send it the DDE request now but ignore the errors
 575                     wxLogNull noLog;
 576
 577                     const wxString ddeServer = wxRegKey(keyDDE, wxT("application"));
 578                     if ( wxExecuteDDE(ddeServer, ddeTopic, ddeCmd) )
 579                         return true;
 580
 581                     // this is not necessarily an error: maybe browser is
 582                     // simply not running, but no matter, in any case we're
 583                     // going to launch it using ShellExecuteEx() below now and
 584                     // we shouldn't try to open a new window if we open a new
 585                     // browser anyhow
 586                 }
 587             }
 588         }
 589     }
 590
 591     WinStruct<SHELLEXECUTEINFO> sei;
 592     sei.lpFile = url.c_str();
 593     sei.lpVerb = _T("open");
 594     sei.nShow = SW_SHOWNORMAL;
 595
 596     ::ShellExecuteEx(&sei);
 597
 598     const int nResult = (int) sei.hInstApp;
 599
 600     // Firefox returns file not found for some reason, so make an exception
 601     // for it
 602     if ( nResult > 32 || nResult == SE_ERR_FNF )
 603     {
 604 #ifdef __WXDEBUG__
 605         // Log something if SE_ERR_FNF happens
 606         if ( nResult == SE_ERR_FNF )
 607             wxLogDebug(wxT("SE_ERR_FNF from ShellExecute -- maybe FireFox?"));
 608 #endif // __WXDEBUG__
 609         return true;
 610     }
 611 #elif wxUSE_MIMETYPE
 612     // Non-windows way
 613     wxFileType *ft = wxTheMimeTypesManager->GetFileTypeFromExtension (_T("html"));
 614     if ( ft )
 615     {
 616         wxString mt;
 617         ft->GetMimeType(&mt);
 618
 619         wxString cmd;
 620         bool ok = ft->GetOpenCommand(&cmd, wxFileType::MessageParameters(url));
 621         delete ft;
 622
 623         if ( !ok || cmd.empty() )
 624         {
 625             // fallback to checking for the BROWSER environment variable
 626             cmd = wxGetenv(wxT("BROWSER"));
 627             if ( !cmd.empty() )
 628                 cmd << _T(' ') << url;
 629         }
 630
 631         if ( !cmd.empty() && wxExecute(cmd) )
 632             return true;
 633     }
 634     else // no file type for html extension
 635     {
 636         wxLogError(_T("No default application configured for HTML files."));
 637     }
 638 #endif // !wxUSE_MIMETYPE && !__WXMSW__
 639
 640     wxLogSysError(_T("Failed to open URL \"%s\" in default browser."),
 641                   url.c_str());
 642
 643     return false;
 644 }
 645
 646 // ----------------------------------------------------------------------------
 647 // wxApp::Yield() wrappers for backwards compatibility
 648 // ----------------------------------------------------------------------------
 649
 650 bool wxYield()
 651 {
 652     return wxTheApp && wxTheApp->Yield();
 653 }
 654
 655 bool wxYieldIfNeeded()
 656 {
 657     return wxTheApp && wxTheApp->Yield(true);
 658 }
 659
 660 #endif // wxUSE_BASE
 661
 662 // ============================================================================
 663 // GUI-only functions from now on
 664 // ============================================================================
 665
 666 #if wxUSE_GUI
 667
 668 // Id generation
 669 static long wxCurrentId = 100;
 670
 671 long wxNewId()
 672 {
 673     // skip the part of IDs space that contains hard-coded values:
 674     if (wxCurrentId == wxID_LOWEST)
 675         wxCurrentId = wxID_HIGHEST + 1;
 676
 677     return wxCurrentId++;
 678 }
 679
 680 long
 681 wxGetCurrentId(void) { return wxCurrentId; }
 682
 683 void
 684 wxRegisterId (long id)
 685 {
 686   if (id >= wxCurrentId)
 687     wxCurrentId = id + 1;
 688 }
 689
 690 #if wxUSE_MENUS
 691
 692 // ----------------------------------------------------------------------------
 693 // Menu accelerators related functions
 694 // ----------------------------------------------------------------------------
 695
 696 wxChar *wxStripMenuCodes(const wxChar *in, wxChar *out)
 697 {
 698     wxString s = wxMenuItem::GetLabelFromText(in);
 699     if ( out )
 700     {
 701         // go smash their buffer if it's not big enough - I love char * params
 702         memcpy(out, s.c_str(), s.length() * sizeof(wxChar));
 703     }
 704     else
 705     {
 706         // MYcopystring - for easier search...
 707         out = new wxChar[s.length() + 1];
 708         wxStrcpy(out, s.c_str());
 709     }
 710
 711     return out;
 712 }
 713
 714 wxString wxStripMenuCodes(const wxString& in)
 715 {
 716     wxString out;
 717
 718     size_t len = in.length();
 719     out.reserve(len);
 720
 721     for ( size_t n = 0; n < len; n++ )
 722     {
 723         wxChar ch = in[n];
 724         if ( ch == _T('&') )
 725         {
 726             // skip it, it is used to introduce the accel char (or to quote
 727             // itself in which case it should still be skipped): note that it
 728             // can't be the last character of the string
 729             if ( ++n == len )
 730             {
 731                 wxLogDebug(_T("Invalid menu string '%s'"), in.c_str());
 732             }
 733             else
 734             {
 735                 // use the next char instead
 736                 ch = in[n];
 737             }
 738         }
 739         else if ( ch == _T('\t') )
 740         {
 741             // everything after TAB is accel string, exit the loop
 742             break;
 743         }
 744
 745         out += ch;
 746     }
 747
 748     return out;
 749 }
 750
 751 #endif // wxUSE_MENUS
 752
 753 // ----------------------------------------------------------------------------
 754 // Window search functions
 755 // ----------------------------------------------------------------------------
 756
 757 /*
 758  * If parent is non-NULL, look through children for a label or title
 759  * matching the specified string. If NULL, look through all top-level windows.
 760  *
 761  */
 762
 763 wxWindow *
 764 wxFindWindowByLabel (const wxString& title, wxWindow * parent)
 765 {
 766     return wxWindow::FindWindowByLabel( title, parent );
 767 }
 768
 769
 770 /*
 771  * If parent is non-NULL, look through children for a name
 772  * matching the specified string. If NULL, look through all top-level windows.
 773  *
 774  */
 775
 776 wxWindow *
 777 wxFindWindowByName (const wxString& name, wxWindow * parent)
 778 {
 779     return wxWindow::FindWindowByName( name, parent );
 780 }
 781
 782 // Returns menu item id or wxNOT_FOUND if none.
 783 int
 784 wxFindMenuItemId (wxFrame * frame, const wxString& menuString, const wxString& itemString)
 785 {
 786 #if wxUSE_MENUS
 787   wxMenuBar *menuBar = frame->GetMenuBar ();
 788   if ( menuBar )
 789       return menuBar->FindMenuItem (menuString, itemString);
 790 #endif // wxUSE_MENUS
 791
 792   return wxNOT_FOUND;
 793 }
 794
 795 // Try to find the deepest child that contains 'pt'.
 796 // We go backwards, to try to allow for controls that are spacially
 797 // within other controls, but are still siblings (e.g. buttons within
 798 // static boxes). Static boxes are likely to be created _before_ controls
 799 // that sit inside them.
 800 wxWindow* wxFindWindowAtPoint(wxWindow* win, const wxPoint& pt)
 801 {
 802     if (!win->IsShown())
 803         return NULL;
 804
 805     // Hack for wxNotebook case: at least in wxGTK, all pages
 806     // claim to be shown, so we must only deal with the selected one.
 807 #if wxUSE_NOTEBOOK
 808     if (win->IsKindOf(CLASSINFO(wxNotebook)))
 809     {
 810       wxNotebook* nb = (wxNotebook*) win;
 811       int sel = nb->GetSelection();
 812       if (sel >= 0)
 813       {
 814         wxWindow* child = nb->GetPage(sel);
 815         wxWindow* foundWin = wxFindWindowAtPoint(child, pt);
 816         if (foundWin)
 817            return foundWin;
 818       }
 819     }
 820 #endif
 821
 822     wxWindowList::compatibility_iterator node = win->GetChildren().GetLast();
 823     while (node)
 824     {
 825         wxWindow* child = node->GetData();
 826         wxWindow* foundWin = wxFindWindowAtPoint(child, pt);
 827         if (foundWin)
 828           return foundWin;
 829         node = node->GetPrevious();
 830     }
 831
 832     wxPoint pos = win->GetPosition();
 833     wxSize sz = win->GetSize();
 834     if (win->GetParent())
 835     {
 836         pos = win->GetParent()->ClientToScreen(pos);
 837     }
 838
 839     wxRect rect(pos, sz);
 840     if (rect.Inside(pt))
 841         return win;
 842     else
 843         return NULL;
 844 }
 845
 846 wxWindow* wxGenericFindWindowAtPoint(const wxPoint& pt)
 847 {
 848     // Go backwards through the list since windows
 849     // on top are likely to have been appended most
 850     // recently.
 851     wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetLast();
 852     while (node)
 853     {
 854         wxWindow* win = node->GetData();
 855         wxWindow* found = wxFindWindowAtPoint(win, pt);
 856         if (found)
 857             return found;
 858         node = node->GetPrevious();
 859     }
 860     return NULL;
 861 }
 862
 863 // ----------------------------------------------------------------------------
 864 // GUI helpers
 865 // ----------------------------------------------------------------------------
 866
 867 /*
 868  * N.B. these convenience functions must be separate from msgdlgg.cpp, textdlgg.cpp
 869  * since otherwise the generic code may be pulled in unnecessarily.
 870  */
 871
 872 #if wxUSE_MSGDLG
 873
 874 int wxMessageBox(const wxString& message, const wxString& caption, long style,
 875                  wxWindow *parent, int WXUNUSED(x), int WXUNUSED(y) )
 876 {
 877     long decorated_style = style;
 878
 879     if ( ( style & ( wxICON_EXCLAMATION | wxICON_HAND | wxICON_INFORMATION | wxICON_QUESTION ) ) == 0 )
 880     {
 881         decorated_style |= ( style & wxYES ) ? wxICON_QUESTION : wxICON_INFORMATION ;
 882     }
 883
 884     wxMessageDialog dialog(parent, message, caption, decorated_style);
 885
 886     int ans = dialog.ShowModal();
 887     switch ( ans )
 888     {
 889         case wxID_OK:
 890             return wxOK;
 891         case wxID_YES:
 892             return wxYES;
 893         case wxID_NO:
 894             return wxNO;
 895         case wxID_CANCEL:
 896             return wxCANCEL;
 897     }
 898
 899     wxFAIL_MSG( _T("unexpected return code from wxMessageDialog") );
 900
 901     return wxCANCEL;
 902 }
 903
 904 #endif // wxUSE_MSGDLG
 905
 906 #if wxUSE_TEXTDLG
 907
 908 wxString wxGetTextFromUser(const wxString& message, const wxString& caption,
 909                         const wxString& defaultValue, wxWindow *parent,
 910                         wxCoord x, wxCoord y, bool centre )
 911 {
 912     wxString str;
 913     long style = wxTextEntryDialogStyle;
 914
 915     if (centre)
 916         style |= wxCENTRE;
 917     else
 918         style &= ~wxCENTRE;
 919
 920     wxTextEntryDialog dialog(parent, message, caption, defaultValue, style, wxPoint(x, y));
 921
 922     if (dialog.ShowModal() == wxID_OK)
 923     {
 924         str = dialog.GetValue();
 925     }
 926
 927     return str;
 928 }
 929
 930 wxString wxGetPasswordFromUser(const wxString& message,
 931                                const wxString& caption,
 932                                const wxString& defaultValue,
 933                                wxWindow *parent,
 934                                wxCoord x, wxCoord y, bool centre )
 935 {
 936     wxString str;
 937     long style = wxTextEntryDialogStyle;
 938
 939     if (centre)
 940         style |= wxCENTRE;
 941     else
 942         style &= ~wxCENTRE;
 943
 944     wxPasswordEntryDialog dialog(parent, message, caption, defaultValue,
 945                              style, wxPoint(x, y));
 946     if ( dialog.ShowModal() == wxID_OK )
 947     {
 948         str = dialog.GetValue();
 949     }
 950
 951     return str;
 952 }
 953
 954 #endif // wxUSE_TEXTDLG
 955
 956 #if wxUSE_COLOURDLG
 957
 958 wxColour wxGetColourFromUser(wxWindow *parent, const wxColour& colInit)
 959 {
 960     wxColourData data;
 961     data.SetChooseFull(true);
 962     if ( colInit.Ok() )
 963     {
 964         data.SetColour((wxColour &)colInit); // const_cast
 965     }
 966
 967     wxColour colRet;
 968     wxColourDialog dialog(parent, &data);
 969     if ( dialog.ShowModal() == wxID_OK )
 970     {
 971         colRet = dialog.GetColourData().GetColour();
 972     }
 973     //else: leave it invalid
 974
 975     return colRet;
 976 }
 977
 978 #endif // wxUSE_COLOURDLG
 979
 980 #if wxUSE_FONTDLG
 981
 982 wxFont wxGetFontFromUser(wxWindow *parent, const wxFont& fontInit)
 983 {
 984     wxFontData data;
 985     if ( fontInit.Ok() )
 986     {
 987         data.SetInitialFont(fontInit);
 988     }
 989
 990     wxFont fontRet;
 991     wxFontDialog dialog(parent, data);
 992     if ( dialog.ShowModal() == wxID_OK )
 993     {
 994         fontRet = dialog.GetFontData().GetChosenFont();
 995     }
 996     //else: leave it invalid
 997
 998     return fontRet;
 999 }
1000
1001 #endif // wxUSE_FONTDLG
1002
1003 // ----------------------------------------------------------------------------
1004 // wxSafeYield and supporting functions
1005 // ----------------------------------------------------------------------------
1006
1007 void wxEnableTopLevelWindows(bool enable)
1008 {
1009     wxWindowList::compatibility_iterator node;
1010     for ( node = wxTopLevelWindows.GetFirst(); node; node = node->GetNext() )
1011         node->GetData()->Enable(enable);
1012 }
1013
1014 wxWindowDisabler::wxWindowDisabler(wxWindow *winToSkip)
1015 {
1016     // remember the top level windows which were already disabled, so that we
1017     // don't reenable them later
1018     m_winDisabled = NULL;
1019
1020     wxWindowList::compatibility_iterator node;
1021     for ( node = wxTopLevelWindows.GetFirst(); node; node = node->GetNext() )
1022     {
1023         wxWindow *winTop = node->GetData();
1024         if ( winTop == winToSkip )
1025             continue;
1026
1027         // we don't need to disable the hidden or already disabled windows
1028         if ( winTop->IsEnabled() && winTop->IsShown() )
1029         {
1030             winTop->Disable();
1031         }
1032         else
1033         {
1034             if ( !m_winDisabled )
1035             {
1036                 m_winDisabled = new wxWindowList;
1037             }
1038
1039             m_winDisabled->Append(winTop);
1040         }
1041     }
1042 }
1043
1044 wxWindowDisabler::~wxWindowDisabler()
1045 {
1046     wxWindowList::compatibility_iterator node;
1047     for ( node = wxTopLevelWindows.GetFirst(); node; node = node->GetNext() )
1048     {
1049         wxWindow *winTop = node->GetData();
1050         if ( !m_winDisabled || !m_winDisabled->Find(winTop) )
1051         {
1052             winTop->Enable();
1053         }
1054         //else: had been already disabled, don't reenable
1055     }
1056
1057     delete m_winDisabled;
1058 }
1059
1060 // Yield to other apps/messages and disable user input to all windows except
1061 // the given one
1062 bool wxSafeYield(wxWindow *win, bool onlyIfNeeded)
1063 {
1064     wxWindowDisabler wd(win);
1065
1066     bool rc;
1067     if (onlyIfNeeded)
1068         rc = wxYieldIfNeeded();
1069     else
1070         rc = wxYield();
1071
1072     return rc;
1073 }
1074
1075 // Don't synthesize KeyUp events holding down a key and producing KeyDown
1076 // events with autorepeat. On by default and always on in wxMSW. wxGTK version
1077 // in utilsgtk.cpp.
1078 #ifndef __WXGTK__
1079 bool wxSetDetectableAutoRepeat( bool WXUNUSED(flag) )
1080 {
1081     return true;    // detectable auto-repeat is the only mode MSW supports
1082 }
1083 #endif // !wxGTK
1084
1085 #endif // wxUSE_GUI