src/msw/textctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        msw/textctrl.cpp
   3 // Purpose:     wxTextCtrl
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 #ifdef __GNUG__
  17     #pragma implementation "textctrl.h"
  18 #endif
  19
  20 // ----------------------------------------------------------------------------
  21 // headers
  22 // ----------------------------------------------------------------------------
  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 #if wxUSE_TEXTCTRL
  32
  33 #ifndef WX_PRECOMP
  34     #include "wx/textctrl.h"
  35     #include "wx/settings.h"
  36     #include "wx/brush.h"
  37     #include "wx/utils.h"
  38     #include "wx/intl.h"
  39     #include "wx/log.h"
  40     #include "wx/app.h"
  41     #include "wx/menu.h"
  42 #endif
  43
  44 #include "wx/module.h"
  45
  46 #if wxUSE_CLIPBOARD
  47     #include "wx/clipbrd.h"
  48 #endif
  49
  50 #include "wx/textfile.h"
  51
  52 #include <windowsx.h>
  53
  54 #include "wx/msw/private.h"
  55
  56 #include <string.h>
  57 #include <stdlib.h>
  58 #include <sys/types.h>
  59
  60 #if wxUSE_RICHEDIT
  61
  62 // old mingw32 has richedit stuff directly in windows.h and doesn't have
  63 // richedit.h at all
  64 #if !defined(__GNUWIN32_OLD__) || defined(__CYGWIN10__)
  65     #include <richedit.h>
  66 #endif
  67
  68 // old mingw32 doesn't define this
  69 #ifndef CFM_CHARSET
  70     #define CFM_CHARSET 0x08000000
  71 #endif // CFM_CHARSET
  72
  73 #ifndef CFM_BACKCOLOR
  74     #define CFM_BACKCOLOR 0x04000000
  75 #endif
  76
  77 // cygwin does not have these defined for richedit
  78 #ifndef ENM_LINK
  79     #define ENM_LINK 0x04000000
  80 #endif
  81
  82 #ifndef EM_AUTOURLDETECT
  83     #define EM_AUTOURLDETECT (WM_USER + 91)
  84 #endif
  85
  86 #ifndef EN_LINK
  87     #define EN_LINK 0x070b
  88
  89     typedef struct _enlink
  90     {
  91         NMHDR nmhdr;
  92         UINT msg;
  93         WPARAM wParam;
  94         LPARAM lParam;
  95         CHARRANGE chrg;
  96     } ENLINK;
  97 #endif // ENLINK
  98
  99 #ifndef SF_UNICODE
 100     #define SF_UNICODE 0x0010
 101 #endif
 102
 103 // Watcom C++ doesn't define this
 104 #ifndef SCF_ALL
 105     #define SCF_ALL 0x0004
 106 #endif
 107
 108 #endif // wxUSE_RICHEDIT
 109
 110 // ----------------------------------------------------------------------------
 111 // private functions
 112 // ----------------------------------------------------------------------------
 113
 114 #if wxUSE_RICHEDIT
 115
 116 DWORD CALLBACK wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb);
 117
 118 #endif // wxUSE_RICHEDIT
 119
 120 // ----------------------------------------------------------------------------
 121 // private classes
 122 // ----------------------------------------------------------------------------
 123
 124 #if wxUSE_RICHEDIT
 125
 126 // this module initializes RichEdit DLL(s) if needed
 127 class wxRichEditModule : public wxModule
 128 {
 129 public:
 130     virtual bool OnInit();
 131     virtual void OnExit();
 132
 133     // load the richedit DLL of at least of required version
 134     static bool Load(int version = 1);
 135
 136 private:
 137     // the handles to richedit 1.0 and 2.0 (or 3.0) DLLs
 138     static HINSTANCE ms_hRichEdit[2];
 139
 140     DECLARE_DYNAMIC_CLASS(wxRichEditModule)
 141 };
 142
 143 HINSTANCE wxRichEditModule::ms_hRichEdit[2] = { NULL, NULL };
 144
 145 IMPLEMENT_DYNAMIC_CLASS(wxRichEditModule, wxModule)
 146
 147 #endif // wxUSE_RICHEDIT
 148
 149 // ----------------------------------------------------------------------------
 150 // event tables and other macros
 151 // ----------------------------------------------------------------------------
 152
 153 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxControl)
 154
 155 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
 156     EVT_CHAR(wxTextCtrl::OnChar)
 157     EVT_DROP_FILES(wxTextCtrl::OnDropFiles)
 158
 159 #if wxUSE_RICHEDIT
 160     EVT_RIGHT_UP(wxTextCtrl::OnRightClick)
 161 #endif
 162
 163     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 164     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 165     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 166     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 167     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 168     EVT_MENU(wxID_CLEAR, wxTextCtrl::OnDelete)
 169     EVT_MENU(wxID_SELECTALL, wxTextCtrl::OnSelectAll)
 170
 171     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 172     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 173     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 174     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 175     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 176     EVT_UPDATE_UI(wxID_CLEAR, wxTextCtrl::OnUpdateDelete)
 177     EVT_UPDATE_UI(wxID_SELECTALL, wxTextCtrl::OnUpdateSelectAll)
 178 #ifdef __WIN16__
 179     EVT_ERASE_BACKGROUND(wxTextCtrl::OnEraseBackground)
 180 #endif
 181 END_EVENT_TABLE()
 182
 183 // ============================================================================
 184 // implementation
 185 // ============================================================================
 186
 187 // ----------------------------------------------------------------------------
 188 // creation
 189 // ----------------------------------------------------------------------------
 190
 191 void wxTextCtrl::Init()
 192 {
 193 #if wxUSE_RICHEDIT
 194     m_verRichEdit = 0;
 195 #endif // wxUSE_RICHEDIT
 196
 197     m_privateContextMenu = NULL;
 198     m_suppressNextUpdate = FALSE;
 199 }
 200
 201 wxTextCtrl::~wxTextCtrl()
 202 {
 203     if (m_privateContextMenu)
 204     {
 205         delete m_privateContextMenu;
 206         m_privateContextMenu = NULL;
 207     }
 208 }
 209
 210 bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id,
 211                         const wxString& value,
 212                         const wxPoint& pos,
 213                         const wxSize& size,
 214                         long style,
 215                         const wxValidator& validator,
 216                         const wxString& name)
 217 {
 218     // base initialization
 219     if ( !CreateBase(parent, id, pos, size, style, validator, name) )
 220         return FALSE;
 221
 222     if ( parent )
 223         parent->AddChild(this);
 224
 225     // translate wxWin style flags to MSW ones
 226     WXDWORD msStyle = MSWGetCreateWindowFlags();
 227
 228     // do create the control - either an EDIT or RICHEDIT
 229     wxString windowClass = wxT("EDIT");
 230
 231 #if wxUSE_RICHEDIT
 232     if ( m_windowStyle & wxTE_AUTO_URL )
 233     {
 234         // automatic URL detection only works in RichEdit 2.0+
 235         m_windowStyle |= wxTE_RICH2;
 236     }
 237
 238     if ( m_windowStyle & wxTE_RICH2 )
 239     {
 240         // using richedit 2.0 implies using wxTE_RICH
 241         m_windowStyle |= wxTE_RICH;
 242     }
 243
 244     // we need to load the richedit DLL before creating the rich edit control
 245     if ( m_windowStyle & wxTE_RICH )
 246     {
 247         static bool s_errorGiven = FALSE;// MT-FIXME
 248
 249         // Which version do we need? Use 1.0 by default because it is much more
 250         // like the the standard EDIT or 2.0 if explicitly requested, but use
 251         // only 2.0 in Unicode mode as 1.0 doesn't support Unicode at all
 252         //
 253         // TODO: RichEdit 3.0 is apparently capable of emulating RichEdit 1.0
 254         //       (and thus EDIT) much better than RichEdit 2.0 so we probably
 255         //       should use 3.0 if available as it is the best of both worlds -
 256         //       but as I can't test it right now I don't do it (VZ)
 257 #if wxUSE_UNICODE
 258         const int verRichEdit = 2;
 259 #else // !wxUSE_UNICODE
 260         int verRichEdit = m_windowStyle & wxTE_RICH2 ? 2 : 1;
 261 #endif // wxUSE_UNICODE/!wxUSE_UNICODE
 262
 263         // only give the error msg once if the DLL can't be loaded
 264         if ( !s_errorGiven )
 265         {
 266             // try to load the RichEdit DLL (will do nothing if already done)
 267             if ( !wxRichEditModule::Load(verRichEdit) )
 268             {
 269 #if !wxUSE_UNICODE
 270                 // try another version?
 271                 verRichEdit = 3 - verRichEdit; // 1 <-> 2
 272
 273                 if ( !wxRichEditModule::Load(verRichEdit) )
 274 #endif // wxUSE_UNICODE
 275                 {
 276                     wxLogError(_("Impossible to create a rich edit control, using simple text control instead. Please reinstall riched32.dll"));
 277
 278                     s_errorGiven = TRUE;
 279                 }
 280             }
 281         }
 282
 283         // have we managed to load any richedit version?
 284         if ( !s_errorGiven )
 285         {
 286             m_verRichEdit = verRichEdit;
 287             if ( m_verRichEdit == 1 )
 288             {
 289                 windowClass = wxT("RICHEDIT");
 290             }
 291             else
 292             {
 293 #ifndef RICHEDIT_CLASS
 294                 wxString RICHEDIT_CLASS;
 295                 RICHEDIT_CLASS.Printf(_T("RichEdit%d0"), m_verRichEdit);
 296 #if wxUSE_UNICODE
 297                 RICHEDIT_CLASS += _T('W');
 298 #else // ANSI
 299                 RICHEDIT_CLASS += _T('A');
 300 #endif // Unicode/ANSI
 301 #endif // !RICHEDIT_CLASS
 302
 303                 windowClass = RICHEDIT_CLASS;
 304             }
 305         }
 306     }
 307 #endif // wxUSE_RICHEDIT
 308
 309     // we need to turn '\n's into "\r\n"s for the multiline controls
 310     wxString valueWin;
 311     if ( m_windowStyle & wxTE_MULTILINE )
 312     {
 313         valueWin = wxTextFile::Translate(value, wxTextFileType_Dos);
 314     }
 315     else // single line
 316     {
 317         valueWin = value;
 318     }
 319
 320     if ( !MSWCreateControl(windowClass, msStyle, pos, size, valueWin) )
 321         return FALSE;
 322
 323     SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
 324
 325 #if wxUSE_RICHEDIT
 326     if ( IsRich() )
 327     {
 328         // enable the events we're interested in: we want to get EN_CHANGE as
 329         // for the normal controls
 330         LPARAM mask = ENM_CHANGE;
 331
 332         if ( GetRichVersion() == 1 )
 333         {
 334             // we also need EN_MSGFILTER for richedit 1.0 for the reasons
 335             // explained in its handler
 336            mask |= ENM_MOUSEEVENTS;
 337         }
 338         else if ( m_windowStyle & wxTE_AUTO_URL )
 339         {
 340             mask |= ENM_LINK;
 341
 342             ::SendMessage(GetHwnd(), EM_AUTOURLDETECT, TRUE, 0);
 343         }
 344
 345         ::SendMessage(GetHwnd(), EM_SETEVENTMASK, 0, mask);
 346     }
 347 #endif // wxUSE_RICHEDIT
 348
 349     return TRUE;
 350 }
 351
 352 // Make sure the window style (etc.) reflects the HWND style (roughly)
 353 void wxTextCtrl::AdoptAttributesFromHWND()
 354 {
 355     wxWindow::AdoptAttributesFromHWND();
 356
 357     HWND hWnd = GetHwnd();
 358     long style = ::GetWindowLong(hWnd, GWL_STYLE);
 359
 360     // retrieve the style to see whether this is an edit or richedit ctrl
 361 #if wxUSE_RICHEDIT
 362     wxString classname = wxGetWindowClass(GetHWND());
 363
 364     if ( classname.IsSameAs(_T("EDIT"), FALSE /* no case */) )
 365     {
 366         m_verRichEdit = 0;
 367     }
 368     else // rich edit?
 369     {
 370         wxChar c;
 371         if ( wxSscanf(classname, _T("RichEdit%d0%c"), &m_verRichEdit, &c) != 2 )
 372         {
 373             wxLogDebug(_T("Unknown edit control '%s'."), classname.c_str());
 374
 375             m_verRichEdit = 0;
 376         }
 377     }
 378 #endif // wxUSE_RICHEDIT
 379
 380     if (style & ES_MULTILINE)
 381         m_windowStyle |= wxTE_MULTILINE;
 382     if (style & ES_PASSWORD)
 383         m_windowStyle |= wxTE_PASSWORD;
 384     if (style & ES_READONLY)
 385         m_windowStyle |= wxTE_READONLY;
 386     if (style & ES_WANTRETURN)
 387         m_windowStyle |= wxTE_PROCESS_ENTER;
 388     if (style & ES_CENTER)
 389         m_windowStyle |= wxTE_CENTRE;
 390     if (style & ES_RIGHT)
 391         m_windowStyle |= wxTE_RIGHT;
 392 }
 393
 394 WXDWORD wxTextCtrl::MSWGetStyle(long style, WXDWORD *exstyle) const
 395 {
 396     // default border for the text controls is the sunken one
 397     if ( (style & wxBORDER_MASK) == wxBORDER_DEFAULT )
 398     {
 399         style |= wxBORDER_SUNKEN;
 400     }
 401
 402     long msStyle = wxControl::MSWGetStyle(style, exstyle);
 403
 404     // styles which we alaways add by default
 405     if ( style & wxTE_MULTILINE )
 406     {
 407         wxASSERT_MSG( !(style & wxTE_PROCESS_ENTER),
 408                       wxT("wxTE_PROCESS_ENTER style is ignored for multiline text controls (they always process it)") );
 409
 410         msStyle |= ES_MULTILINE | ES_WANTRETURN;
 411         if ( !(style & wxTE_NO_VSCROLL) )
 412         {
 413             // always adjust the vertical scrollbar automatically if we have it
 414             msStyle |= WS_VSCROLL | ES_AUTOVSCROLL;
 415
 416             // we have to use this style for the rich edit controls because
 417             // without it the vertical scrollbar never appears at all in
 418             // richedit 3.0 because of our ECO_NOHIDESEL hack (search for it)
 419             if ( style & wxTE_RICH2 )
 420             {
 421                 msStyle |= ES_DISABLENOSCROLL;
 422             }
 423         }
 424
 425         style |= wxTE_PROCESS_ENTER;
 426     }
 427     else // !multiline
 428     {
 429         // there is really no reason to not have this style for single line
 430         // text controls
 431         msStyle |= ES_AUTOHSCROLL;
 432     }
 433
 434     // styles which we add depending on the specified wxWindows styles
 435     if ( style & wxHSCROLL )
 436     {
 437         // automatically scroll the control horizontally as necessary
 438         msStyle |= WS_HSCROLL;// | ES_AUTOHSCROLL;
 439     }
 440
 441     if ( style & wxTE_READONLY )
 442         msStyle |= ES_READONLY;
 443
 444     if ( style & wxTE_PASSWORD )
 445         msStyle |= ES_PASSWORD;
 446
 447     if ( style & wxTE_NOHIDESEL )
 448         msStyle |= ES_NOHIDESEL;
 449
 450     // note that we can't do do "& wxTE_LEFT" as wxTE_LEFT == 0
 451     if ( style & wxTE_CENTRE )
 452         msStyle |= ES_CENTER;
 453     else if ( style & wxTE_RIGHT )
 454         msStyle |= ES_RIGHT;
 455     else
 456         msStyle |= ES_LEFT; // ES_LEFT if 0 as well but for consistency...
 457
 458     return msStyle;
 459 }
 460
 461 void wxTextCtrl::SetWindowStyleFlag(long style)
 462 {
 463     if ( (style & wxBORDER_MASK) == wxBORDER_DEFAULT )
 464         style |= wxBORDER_SUNKEN;
 465
 466 #if wxUSE_RICHEDIT
 467     // we have to deal with some styles separately because they can't be
 468     // changed by simply calling SetWindowLong(GWL_STYLE) but can be changed
 469     // using richedit-specific EM_SETOPTIONS
 470     if ( IsRich() &&
 471             ((style & wxTE_NOHIDESEL) != (GetWindowStyle() & wxTE_NOHIDESEL)) )
 472     {
 473         bool set = (style & wxTE_NOHIDESEL) != 0;
 474
 475         ::SendMessage(GetHwnd(), EM_SETOPTIONS, set ? ECOOP_OR : ECOOP_AND,
 476                       set ? ECO_NOHIDESEL : ~ECO_NOHIDESEL);
 477     }
 478 #endif // wxUSE_RICHEDIT
 479
 480     wxControl::SetWindowStyleFlag(style);
 481 }
 482
 483 // ----------------------------------------------------------------------------
 484 // set/get the controls text
 485 // ----------------------------------------------------------------------------
 486
 487 wxString wxTextCtrl::GetValue() const
 488 {
 489     // range 0..-1 is special for GetRange() and means to retrieve all text
 490     return GetRange(0, -1);
 491 }
 492
 493 wxString wxTextCtrl::GetRange(long from, long to) const
 494 {
 495     wxString str;
 496
 497     if ( from >= to && to != -1 )
 498     {
 499         // nothing to retrieve
 500         return str;
 501     }
 502
 503 #if wxUSE_RICHEDIT
 504     if ( IsRich() )
 505     {
 506         int len = GetWindowTextLength(GetHwnd());
 507         if ( len > from )
 508         {
 509             // alloc one extra WORD as needed by the control
 510             wxChar *p = str.GetWriteBuf(++len);
 511
 512             TEXTRANGE textRange;
 513             textRange.chrg.cpMin = from;
 514             textRange.chrg.cpMax = to == -1 ? len : to;
 515             textRange.lpstrText = p;
 516
 517             (void)SendMessage(GetHwnd(), EM_GETTEXTRANGE, 0, (LPARAM)&textRange);
 518
 519             if ( m_verRichEdit > 1 )
 520             {
 521                 // RichEdit 2.0 uses just CR ('\r') for the newlines which is
 522                 // neither Unix nor Windows style - convert it to something
 523                 // reasonable
 524                 for ( ; *p; p++ )
 525                 {
 526                     if ( *p == _T('\r') )
 527                         *p = _T('\n');
 528                 }
 529             }
 530
 531             str.UngetWriteBuf();
 532
 533             if ( m_verRichEdit == 1 )
 534             {
 535                 // convert to the canonical form - see comment below
 536                 str = wxTextFile::Translate(str, wxTextFileType_Unix);
 537             }
 538         }
 539         //else: no text at all, leave the string empty
 540     }
 541     else
 542 #endif // wxUSE_RICHEDIT
 543     {
 544         // retrieve all text
 545         str = wxGetWindowText(GetHWND());
 546
 547         // need only a range?
 548         if ( from < to )
 549         {
 550             str = str.Mid(from, to - from);
 551         }
 552
 553         // WM_GETTEXT uses standard DOS CR+LF (\r\n) convention - convert to the
 554         // canonical one (same one as above) for consistency with the other kinds
 555         // of controls and, more importantly, with the other ports
 556         str = wxTextFile::Translate(str, wxTextFileType_Unix);
 557     }
 558
 559     return str;
 560 }
 561
 562 void wxTextCtrl::SetValue(const wxString& value)
 563 {
 564     // if the text is long enough, it's faster to just set it instead of first
 565     // comparing it with the old one (chances are that it will be different
 566     // anyhow, this comparison is there to avoid flicker for small single-line
 567     // edit controls mostly)
 568     if ( (value.length() > 0x400) || (value != GetValue()) )
 569     {
 570         DoWriteText(value, FALSE /* not selection only */);
 571
 572         // mark the control as being not dirty - we changed its text, not the
 573         // user
 574         DiscardEdits();
 575
 576         // for compatibility, don't move the cursor when doing SetValue()
 577         SetInsertionPoint(0);
 578     }
 579 }
 580
 581 #if wxUSE_RICHEDIT && (!wxUSE_UNICODE || wxUSE_UNICODE_MSLU)
 582
 583 DWORD CALLBACK wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb)
 584 {
 585     *pcb = 0;
 586
 587     wchar_t *wbuf = (wchar_t *)buf;
 588     const wchar_t *wpc = *(const wchar_t **)dwCookie;
 589     while ( cb && *wpc )
 590     {
 591         *wbuf++ = *wpc++;
 592
 593         cb -= sizeof(wchar_t);
 594         (*pcb) += sizeof(wchar_t);
 595     }
 596
 597     *(const wchar_t **)dwCookie = wpc;
 598
 599     return 0;
 600 }
 601
 602 extern long wxEncodingToCodepage(wxFontEncoding encoding); // from utils.cpp
 603
 604 #if wxUSE_UNICODE_MSLU
 605 bool wxTextCtrl::StreamIn(const wxString& value,
 606                           wxFontEncoding WXUNUSED(encoding),
 607                           bool selectionOnly)
 608 {
 609     const wchar_t *wpc = value.c_str();
 610 #else // !wxUSE_UNICODE_MSLU
 611 bool wxTextCtrl::StreamIn(const wxString& value,
 612                           wxFontEncoding encoding,
 613                           bool selectionOnly)
 614 {
 615     // we have to use EM_STREAMIN to force richedit control 2.0+ to show any
 616     // text in the non default charset -- otherwise it thinks it knows better
 617     // than we do and always shows it in the default one
 618
 619     // first get the Windows code page for this encoding
 620     long codepage = wxEncodingToCodepage(encoding);
 621     if ( codepage == -1 )
 622     {
 623         // unknown encoding
 624         return FALSE;
 625     }
 626
 627     // next translate to Unicode using this code page
 628     int len = ::MultiByteToWideChar(codepage, 0, value, -1, NULL, 0);
 629
 630 #if wxUSE_WCHAR_T
 631     wxWCharBuffer wchBuf(len);
 632 #else
 633     wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
 634 #endif
 635
 636     if ( !::MultiByteToWideChar(codepage, 0, value, -1,
 637                                 (wchar_t *)(const wchar_t *)wchBuf, len) )
 638     {
 639         wxLogLastError(_T("MultiByteToWideChar"));
 640     }
 641
 642     // finally, stream it in the control
 643     const wchar_t *wpc = wchBuf;
 644 #endif // wxUSE_UNICODE_MSLU
 645
 646     EDITSTREAM eds;
 647     wxZeroMemory(eds);
 648     eds.dwCookie = (DWORD)&wpc;
 649     // the cast below is needed for broken (very) old mingw32 headers
 650     eds.pfnCallback = (EDITSTREAMCALLBACK)wxRichEditStreamIn;
 651
 652     // we're going to receive 2 EN_CHANGE notifications if we got any selection
 653     // (same problem as in DoWriteText())
 654     if ( selectionOnly && HasSelection() )
 655     {
 656         // so suppress one of them
 657         m_suppressNextUpdate = TRUE;
 658     }
 659
 660     ::SendMessage(GetHwnd(), EM_STREAMIN,
 661                   SF_TEXT |
 662                   SF_UNICODE |
 663                   (selectionOnly ? SFF_SELECTION : 0),
 664                   (LPARAM)&eds);
 665
 666     if ( eds.dwError )
 667     {
 668         wxLogLastError(_T("EM_STREAMIN"));
 669     }
 670
 671 #if !wxUSE_WCHAR_T
 672     free(wchBuf);
 673 #endif // !wxUSE_WCHAR_T
 674
 675     return TRUE;
 676 }
 677
 678 #endif // wxUSE_RICHEDIT
 679
 680 void wxTextCtrl::WriteText(const wxString& value)
 681 {
 682     DoWriteText(value);
 683 }
 684
 685 void wxTextCtrl::DoWriteText(const wxString& value, bool selectionOnly)
 686 {
 687     wxString valueDos;
 688     if ( m_windowStyle & wxTE_MULTILINE )
 689         valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
 690     else
 691         valueDos = value;
 692
 693 #if wxUSE_RICHEDIT
 694     // there are several complications with the rich edit controls here
 695     bool done = FALSE;
 696     if ( IsRich() )
 697     {
 698         // first, ensure that the new text will be in the default style
 699         if ( !m_defaultStyle.IsDefault() )
 700         {
 701             long start, end;
 702             GetSelection(&start, &end);
 703             SetStyle(start, end, m_defaultStyle);
 704         }
 705
 706 #if wxUSE_UNICODE_MSLU
 707         // RichEdit doesn't have Unicode version of EM_REPLACESEL on Win9x,
 708         // but EM_STREAMIN works
 709         if ( wxUsingUnicowsDll() && GetRichVersion() > 1 )
 710         {
 711            done = StreamIn(valueDos, wxFONTENCODING_SYSTEM, selectionOnly);
 712         }
 713 #endif // wxUSE_UNICODE_MSLU
 714
 715 #if !wxUSE_UNICODE
 716         // next check if the text we're inserting must be shown in a non
 717         // default charset -- this only works for RichEdit > 1.0
 718         if ( GetRichVersion() > 1 )
 719         {
 720             wxFont font = m_defaultStyle.GetFont();
 721             if ( !font.Ok() )
 722                 font = GetFont();
 723
 724             if ( font.Ok() )
 725             {
 726                wxFontEncoding encoding = font.GetEncoding();
 727                if ( encoding != wxFONTENCODING_SYSTEM )
 728                {
 729                    done = StreamIn(valueDos, encoding, selectionOnly);
 730                }
 731             }
 732         }
 733 #endif // !wxUSE_UNICODE
 734     }
 735
 736     if ( !done )
 737 #endif // wxUSE_RICHEDIT
 738     {
 739         // in some cases we get 2 EN_CHANGE notifications after the SendMessage
 740         // call below which is confusing for the client code and so should be
 741         // avoided
 742         //
 743         // these cases are: (a) plain EDIT controls if EM_REPLACESEL is used
 744         // and there is a non empty selection currently and (b) rich text
 745         // controls in any case
 746         if (
 747 #if wxUSE_RICHEDIT
 748             IsRich() ||
 749 #endif // wxUSE_RICHEDIT
 750             (selectionOnly && HasSelection()) )
 751         {
 752             m_suppressNextUpdate = TRUE;
 753         }
 754
 755         ::SendMessage(GetHwnd(), selectionOnly ? EM_REPLACESEL : WM_SETTEXT,
 756                       0, (LPARAM)valueDos.c_str());
 757
 758         // OTOH, non rich text controls don't generate any events at all when
 759         // we use WM_SETTEXT -- have to emulate them here
 760         if ( !selectionOnly
 761 #if wxUSE_RICHEDIT
 762                 && !IsRich()
 763 #endif // wxUSE_RICHEDIT
 764            )
 765         {
 766             // Windows already sends an update event for single-line
 767             // controls.
 768             if ( m_windowStyle & wxTE_MULTILINE )
 769                 SendUpdateEvent();
 770         }
 771     }
 772
 773     AdjustSpaceLimit();
 774 }
 775
 776 void wxTextCtrl::AppendText(const wxString& text)
 777 {
 778     SetInsertionPointEnd();
 779
 780     WriteText(text);
 781
 782 #if wxUSE_RICHEDIT
 783     if ( IsMultiLine() && GetRichVersion() > 1 )
 784     {
 785         // setting the caret to the end and showing it simply doesn't work for
 786         // RichEdit 2.0 -- force it to still do what we want
 787         ::SendMessage(GetHwnd(), EM_LINESCROLL, 0, GetNumberOfLines());
 788     }
 789 #endif // wxUSE_RICHEDIT
 790 }
 791
 792 void wxTextCtrl::Clear()
 793 {
 794     ::SetWindowText(GetHwnd(), wxT(""));
 795
 796 #if wxUSE_RICHEDIT
 797     if ( !IsRich() )
 798 #endif // wxUSE_RICHEDIT
 799     {
 800         // rich edit controls send EN_UPDATE from WM_SETTEXT handler themselves
 801         // but the normal ones don't -- make Clear() behaviour consistent by
 802         // always sending this event
 803
 804         // Windows already sends an update event for single-line
 805         // controls.
 806         if ( m_windowStyle & wxTE_MULTILINE )
 807             SendUpdateEvent();
 808     }
 809 }
 810
 811 #ifdef __WIN32__
 812
 813 bool wxTextCtrl::EmulateKeyPress(const wxKeyEvent& event)
 814 {
 815     SetFocus();
 816
 817     size_t lenOld = GetValue().length();
 818
 819     wxUint32 code = event.GetRawKeyCode();
 820     ::keybd_event(code, 0, 0 /* key press */, 0);
 821     ::keybd_event(code, 0, KEYEVENTF_KEYUP, 0);
 822
 823     // assume that any alphanumeric key changes the total number of characters
 824     // in the control - this should work in 99% of cases
 825     return GetValue().length() != lenOld;
 826 }
 827
 828 #endif // __WIN32__
 829
 830 // ----------------------------------------------------------------------------
 831 // Clipboard operations
 832 // ----------------------------------------------------------------------------
 833
 834 void wxTextCtrl::Copy()
 835 {
 836     if (CanCopy())
 837     {
 838         ::SendMessage(GetHwnd(), WM_COPY, 0, 0L);
 839     }
 840 }
 841
 842 void wxTextCtrl::Cut()
 843 {
 844     if (CanCut())
 845     {
 846         ::SendMessage(GetHwnd(), WM_CUT, 0, 0L);
 847     }
 848 }
 849
 850 void wxTextCtrl::Paste()
 851 {
 852     if (CanPaste())
 853     {
 854         ::SendMessage(GetHwnd(), WM_PASTE, 0, 0L);
 855     }
 856 }
 857
 858 bool wxTextCtrl::HasSelection() const
 859 {
 860     long from, to;
 861     GetSelection(&from, &to);
 862     return from != to;
 863 }
 864
 865 bool wxTextCtrl::CanCopy() const
 866 {
 867     // Can copy if there's a selection
 868     return HasSelection();
 869 }
 870
 871 bool wxTextCtrl::CanCut() const
 872 {
 873     return CanCopy() && IsEditable();
 874 }
 875
 876 bool wxTextCtrl::CanPaste() const
 877 {
 878     if ( !IsEditable() )
 879         return FALSE;
 880
 881 #if wxUSE_RICHEDIT
 882     if ( IsRich() )
 883     {
 884         UINT cf = 0; // 0 == any format
 885
 886         return ::SendMessage(GetHwnd(), EM_CANPASTE, cf, 0) != 0;
 887     }
 888 #endif // wxUSE_RICHEDIT
 889
 890     // Standard edit control: check for straight text on clipboard
 891     if ( !::OpenClipboard(GetHwndOf(wxTheApp->GetTopWindow())) )
 892         return FALSE;
 893
 894     bool isTextAvailable = ::IsClipboardFormatAvailable(CF_TEXT) != 0;
 895     ::CloseClipboard();
 896
 897     return isTextAvailable;
 898 }
 899
 900 // ----------------------------------------------------------------------------
 901 // Accessors
 902 // ----------------------------------------------------------------------------
 903
 904 void wxTextCtrl::SetEditable(bool editable)
 905 {
 906     HWND hWnd = GetHwnd();
 907     SendMessage(hWnd, EM_SETREADONLY, (WPARAM)!editable, (LPARAM)0L);
 908 }
 909
 910 void wxTextCtrl::SetInsertionPoint(long pos)
 911 {
 912     DoSetSelection(pos, pos);
 913 }
 914
 915 void wxTextCtrl::SetInsertionPointEnd()
 916 {
 917     // we must not do anything if the caret is already there because calling
 918     // SetInsertionPoint() thaws the controls if Freeze() had been called even
 919     // if it doesn't actually move the caret anywhere and so the simple fact of
 920     // doing it results in horrible flicker when appending big amounts of text
 921     // to the control in a few chunks (see DoAddText() test in the text sample)
 922     if ( GetInsertionPoint() == GetLastPosition() )
 923         return;
 924
 925     long pos;
 926
 927 #if wxUSE_RICHEDIT
 928     if ( m_verRichEdit == 1 )
 929     {
 930         // we don't have to waste time calling GetLastPosition() in this case
 931         pos = -1;
 932     }
 933     else // !RichEdit 1.0
 934 #endif // wxUSE_RICHEDIT
 935     {
 936         pos = GetLastPosition();
 937     }
 938
 939     SetInsertionPoint(pos);
 940 }
 941
 942 long wxTextCtrl::GetInsertionPoint() const
 943 {
 944 #if wxUSE_RICHEDIT
 945     if ( IsRich() )
 946     {
 947         CHARRANGE range;
 948         range.cpMin = 0;
 949         range.cpMax = 0;
 950         SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
 951         return range.cpMin;
 952     }
 953 #endif // wxUSE_RICHEDIT
 954
 955     DWORD Pos = (DWORD)SendMessage(GetHwnd(), EM_GETSEL, 0, 0L);
 956     return Pos & 0xFFFF;
 957 }
 958
 959 long wxTextCtrl::GetLastPosition() const
 960 {
 961     int numLines = GetNumberOfLines();
 962     long posStartLastLine = XYToPosition(0, numLines - 1);
 963
 964     long lenLastLine = GetLengthOfLineContainingPos(posStartLastLine);
 965
 966     return posStartLastLine + lenLastLine;
 967 }
 968
 969 // If the return values from and to are the same, there is no
 970 // selection.
 971 void wxTextCtrl::GetSelection(long* from, long* to) const
 972 {
 973 #if wxUSE_RICHEDIT
 974     if ( IsRich() )
 975     {
 976         CHARRANGE charRange;
 977         ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &charRange);
 978
 979         *from = charRange.cpMin;
 980         *to = charRange.cpMax;
 981     }
 982     else
 983 #endif // !wxUSE_RICHEDIT
 984     {
 985         DWORD dwStart, dwEnd;
 986         ::SendMessage(GetHwnd(), EM_GETSEL, (WPARAM)&dwStart, (LPARAM)&dwEnd);
 987
 988         *from = dwStart;
 989         *to = dwEnd;
 990     }
 991 }
 992
 993 bool wxTextCtrl::IsEditable() const
 994 {
 995     // strangely enough, we may be called before the control is created: our
 996     // own Create() calls MSWGetStyle() which calls AcceptsFocus() which calls
 997     // us
 998     if ( !m_hWnd )
 999         return TRUE;
1000
1001     long style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1002
1003     return (style & ES_READONLY) == 0;
1004 }
1005
1006 // ----------------------------------------------------------------------------
1007 // selection
1008 // ----------------------------------------------------------------------------
1009
1010 void wxTextCtrl::SetSelection(long from, long to)
1011 {
1012     // if from and to are both -1, it means (in wxWindows) that all text should
1013     // be selected - translate into Windows convention
1014     if ( (from == -1) && (to == -1) )
1015     {
1016         from = 0;
1017         to = -1;
1018     }
1019
1020     DoSetSelection(from, to);
1021 }
1022
1023 void wxTextCtrl::DoSetSelection(long from, long to, bool scrollCaret)
1024 {
1025     HWND hWnd = GetHwnd();
1026
1027 #ifdef __WIN32__
1028 #if wxUSE_RICHEDIT
1029     if ( IsRich() )
1030     {
1031         CHARRANGE range;
1032         range.cpMin = from;
1033         range.cpMax = to;
1034         SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM) &range);
1035     }
1036     else
1037 #endif // wxUSE_RICHEDIT
1038     {
1039         SendMessage(hWnd, EM_SETSEL, (WPARAM)from, (LPARAM)to);
1040     }
1041
1042     if ( scrollCaret )
1043     {
1044 #if wxUSE_RICHEDIT
1045         // richedit 3.0 (i.e. the version living in riched20.dll distributed
1046         // with Windows 2000 and beyond) doesn't honour EM_SCROLLCARET when
1047         // emulating richedit 2.0 unless the control has focus or ECO_NOHIDESEL
1048         // option is set (but it does work ok in richedit 1.0 mode...)
1049         //
1050         // so to make it work we either need to give focus to it here which
1051         // will probably create many problems (dummy focus events; window
1052         // containing the text control being brought to foreground
1053         // unexpectedly; ...) or to temporarily set ECO_NOHIDESEL which may
1054         // create other problems too -- and in fact it does because if we turn
1055         // on/off this style while appending the text to the control, the
1056         // vertical scrollbar never appears in it even if we append tons of
1057         // text and to work around this the only solution I found was to use
1058         // ES_DISABLENOSCROLL
1059         //
1060         // this is very ugly but I don't see any other way to make this work
1061         if ( GetRichVersion() > 1 )
1062         {
1063             if ( !HasFlag(wxTE_NOHIDESEL) )
1064             {
1065                 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1066                               ECOOP_OR, ECO_NOHIDESEL);
1067             }
1068             //else: everything is already ok
1069         }
1070 #endif // wxUSE_RICHEDIT
1071
1072         SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
1073
1074 #if wxUSE_RICHEDIT
1075         // restore ECO_NOHIDESEL if we changed it
1076         if ( GetRichVersion() > 1 && !HasFlag(wxTE_NOHIDESEL) )
1077         {
1078             ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1079                           ECOOP_AND, ~ECO_NOHIDESEL);
1080         }
1081 #endif // wxUSE_RICHEDIT
1082     }
1083 #else // Win16
1084     // WPARAM is 0: selection is scrolled into view
1085     SendMessage(hWnd, EM_SETSEL, (WPARAM)0, (LPARAM)MAKELONG(from, to));
1086 #endif // Win32/16
1087 }
1088
1089 // ----------------------------------------------------------------------------
1090 // Editing
1091 // ----------------------------------------------------------------------------
1092
1093 void wxTextCtrl::Replace(long from, long to, const wxString& value)
1094 {
1095     // Set selection and remove it
1096     DoSetSelection(from, to, FALSE /* don't scroll caret into view */);
1097
1098     SendMessage(GetHwnd(), EM_REPLACESEL,
1099 #ifdef __WIN32__
1100                 TRUE,
1101 #else
1102                 FALSE,
1103 #endif
1104                 (LPARAM)value.c_str());
1105 }
1106
1107 void wxTextCtrl::Remove(long from, long to)
1108 {
1109     Replace(from, to, _T(""));
1110 }
1111
1112 bool wxTextCtrl::LoadFile(const wxString& file)
1113 {
1114     if ( wxTextCtrlBase::LoadFile(file) )
1115     {
1116         // update the size limit if needed
1117         AdjustSpaceLimit();
1118
1119         return TRUE;
1120     }
1121
1122     return FALSE;
1123 }
1124
1125 bool wxTextCtrl::IsModified() const
1126 {
1127     return SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0;
1128 }
1129
1130 // Makes 'unmodified'
1131 void wxTextCtrl::DiscardEdits()
1132 {
1133     SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0L);
1134 }
1135
1136 int wxTextCtrl::GetNumberOfLines() const
1137 {
1138     return (int)SendMessage(GetHwnd(), EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0);
1139 }
1140
1141 long wxTextCtrl::XYToPosition(long x, long y) const
1142 {
1143     // This gets the char index for the _beginning_ of this line
1144     long charIndex = SendMessage(GetHwnd(), EM_LINEINDEX, (WPARAM)y, (LPARAM)0);
1145
1146     return charIndex + x;
1147 }
1148
1149 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
1150 {
1151     HWND hWnd = GetHwnd();
1152
1153     // This gets the line number containing the character
1154     long lineNo;
1155 #if wxUSE_RICHEDIT
1156     if ( IsRich() )
1157     {
1158         lineNo = SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, (LPARAM)pos);
1159     }
1160     else
1161 #endif // wxUSE_RICHEDIT
1162     {
1163         lineNo = SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, 0);
1164     }
1165
1166     if ( lineNo == -1 )
1167     {
1168         // no such line
1169         return FALSE;
1170     }
1171
1172     // This gets the char index for the _beginning_ of this line
1173     long charIndex = SendMessage(hWnd, EM_LINEINDEX, (WPARAM)lineNo, (LPARAM)0);
1174     if ( charIndex == -1 )
1175     {
1176         return FALSE;
1177     }
1178
1179     // The X position must therefore be the different between pos and charIndex
1180     if ( x )
1181         *x = pos - charIndex;
1182     if ( y )
1183         *y = lineNo;
1184
1185     return TRUE;
1186 }
1187
1188 void wxTextCtrl::ShowPosition(long pos)
1189 {
1190     HWND hWnd = GetHwnd();
1191
1192     // To scroll to a position, we pass the number of lines and characters
1193     // to scroll *by*. This means that we need to:
1194     // (1) Find the line position of the current line.
1195     // (2) Find the line position of pos.
1196     // (3) Scroll by (pos - current).
1197     // For now, ignore the horizontal scrolling.
1198
1199     // Is this where scrolling is relative to - the line containing the caret?
1200     // Or is the first visible line??? Try first visible line.
1201 //    int currentLineLineNo1 = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)-1, (LPARAM)0L);
1202
1203     int currentLineLineNo = (int)SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, (WPARAM)0, (LPARAM)0L);
1204
1205     int specifiedLineLineNo = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, (LPARAM)0L);
1206
1207     int linesToScroll = specifiedLineLineNo - currentLineLineNo;
1208
1209     if (linesToScroll != 0)
1210       (void)SendMessage(hWnd, EM_LINESCROLL, (WPARAM)0, (LPARAM)linesToScroll);
1211 }
1212
1213 long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const
1214 {
1215     return ::SendMessage(GetHwnd(), EM_LINELENGTH, (WPARAM)pos, 0);
1216 }
1217
1218 int wxTextCtrl::GetLineLength(long lineNo) const
1219 {
1220     long pos = XYToPosition(0, lineNo);
1221
1222     return GetLengthOfLineContainingPos(pos);
1223 }
1224
1225 wxString wxTextCtrl::GetLineText(long lineNo) const
1226 {
1227     size_t len = (size_t)GetLineLength(lineNo) + 1;
1228
1229     // there must be at least enough place for the length WORD in the
1230     // buffer
1231     len += sizeof(WORD);
1232
1233     wxString str;
1234     wxChar *buf = str.GetWriteBuf(len);
1235
1236     *(WORD *)buf = (WORD)len;
1237     len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf);
1238     buf[len] = 0;
1239
1240     str.UngetWriteBuf(len);
1241
1242     return str;
1243 }
1244
1245 void wxTextCtrl::SetMaxLength(unsigned long len)
1246 {
1247     ::SendMessage(GetHwnd(), EM_LIMITTEXT, len, 0);
1248 }
1249
1250 // ----------------------------------------------------------------------------
1251 // Undo/redo
1252 // ----------------------------------------------------------------------------
1253
1254 void wxTextCtrl::Undo()
1255 {
1256     if (CanUndo())
1257     {
1258         ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1259     }
1260 }
1261
1262 void wxTextCtrl::Redo()
1263 {
1264     if (CanRedo())
1265     {
1266         // Same as Undo, since Undo undoes the undo, i.e. a redo.
1267         ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1268     }
1269 }
1270
1271 bool wxTextCtrl::CanUndo() const
1272 {
1273     return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1274 }
1275
1276 bool wxTextCtrl::CanRedo() const
1277 {
1278     return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1279 }
1280
1281 // ----------------------------------------------------------------------------
1282 // implemenation details
1283 // ----------------------------------------------------------------------------
1284
1285 void wxTextCtrl::Command(wxCommandEvent & event)
1286 {
1287     SetValue(event.GetString());
1288     ProcessCommand (event);
1289 }
1290
1291 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
1292 {
1293     // By default, load the first file into the text window.
1294     if (event.GetNumberOfFiles() > 0)
1295     {
1296         LoadFile(event.GetFiles()[0]);
1297     }
1298 }
1299
1300 // ----------------------------------------------------------------------------
1301 // kbd input processing
1302 // ----------------------------------------------------------------------------
1303
1304 bool wxTextCtrl::MSWShouldPreProcessMessage(WXMSG* pMsg)
1305 {
1306     MSG *msg = (MSG *)pMsg;
1307
1308     // check for our special keys here: if we don't do it and the parent frame
1309     // uses them as accelerators, they wouldn't work at all, so we disable
1310     // usual preprocessing for them
1311     if ( msg->message == WM_KEYDOWN )
1312     {
1313         WORD vkey = (WORD) msg->wParam;
1314         if ( (HIWORD(msg->lParam) & KF_ALTDOWN) == KF_ALTDOWN )
1315         {
1316             if ( vkey == VK_BACK )
1317                 return FALSE;
1318         }
1319         else // no Alt
1320         {
1321             // we want to process some Ctrl-foo and Shift-bar but no key
1322             // combinations without either Ctrl or Shift nor with both of them
1323             // pressed
1324             const int ctrl = wxIsCtrlDown(),
1325                       shift = wxIsShiftDown();
1326             switch ( ctrl + shift )
1327             {
1328                 default:
1329                     wxFAIL_MSG( _T("how many modifiers have we got?") );
1330                     // fall through
1331
1332                 case 0:
1333                 case 2:
1334                     break;
1335
1336                 case 1:
1337                     // either Ctrl or Shift pressed
1338                     if ( ctrl )
1339                     {
1340                         switch ( vkey )
1341                         {
1342                             case 'C':
1343                             case 'V':
1344                             case 'X':
1345                             case VK_INSERT:
1346                             case VK_DELETE:
1347                             case VK_HOME:
1348                             case VK_END:
1349                                 return FALSE;
1350                         }
1351                     }
1352                     else // Shift is pressed
1353                     {
1354                         if ( vkey == VK_INSERT || vkey == VK_DELETE )
1355                             return FALSE;
1356                     }
1357             }
1358         }
1359     }
1360
1361     return wxControl::MSWShouldPreProcessMessage(pMsg);
1362 }
1363
1364 void wxTextCtrl::OnChar(wxKeyEvent& event)
1365 {
1366     switch ( event.GetKeyCode() )
1367     {
1368         case WXK_RETURN:
1369             if ( !(m_windowStyle & wxTE_MULTILINE) )
1370             {
1371                 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1372                 InitCommandEvent(event);
1373                 event.SetString(GetValue());
1374                 if ( GetEventHandler()->ProcessEvent(event) )
1375                     return;
1376             }
1377             //else: multiline controls need Enter for themselves
1378
1379             break;
1380
1381         case WXK_TAB:
1382             // always produce navigation event - even if we process TAB
1383             // ourselves the fact that we got here means that the user code
1384             // decided to skip processing of this TAB - probably to let it
1385             // do its default job.
1386             {
1387                 wxNavigationKeyEvent eventNav;
1388                 eventNav.SetDirection(!event.ShiftDown());
1389                 eventNav.SetWindowChange(event.ControlDown());
1390                 eventNav.SetEventObject(this);
1391
1392                 if ( GetParent()->GetEventHandler()->ProcessEvent(eventNav) )
1393                     return;
1394             }
1395             break;
1396     }
1397
1398     // no, we didn't process it
1399     event.Skip();
1400 }
1401
1402 long wxTextCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
1403 {
1404     long lRc = wxTextCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
1405
1406     if ( nMsg == WM_GETDLGCODE )
1407     {
1408         // we always want the chars and the arrows: the arrows for navigation
1409         // and the chars because we want Ctrl-C to work even in a read only
1410         // control
1411         long lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
1412
1413         if ( IsEditable() )
1414         {
1415             // we may have several different cases:
1416             // 1. normal case: both TAB and ENTER are used for dlg navigation
1417             // 2. ctrl which wants TAB for itself: ENTER is used to pass to the
1418             //    next control in the dialog
1419             // 3. ctrl which wants ENTER for itself: TAB is used for dialog
1420             //    navigation
1421             // 4. ctrl which wants both TAB and ENTER: Ctrl-ENTER is used to go
1422             //    to the next control
1423
1424             // the multiline edit control should always get <Return> for itself
1425             if ( HasFlag(wxTE_PROCESS_ENTER) || HasFlag(wxTE_MULTILINE) )
1426                 lDlgCode |= DLGC_WANTMESSAGE;
1427
1428             if ( HasFlag(wxTE_PROCESS_TAB) )
1429                 lDlgCode |= DLGC_WANTTAB;
1430
1431             lRc |= lDlgCode;
1432         }
1433         else // !editable
1434         {
1435             // NB: use "=", not "|=" as the base class version returns the
1436             //     same flags is this state as usual (i.e. including
1437             //     DLGC_WANTMESSAGE). This is strange (how does it work in the
1438             //     native Win32 apps?) but for now live with it.
1439             lRc = lDlgCode;
1440         }
1441     }
1442
1443     return lRc;
1444 }
1445
1446 // ----------------------------------------------------------------------------
1447 // text control event processing
1448 // ----------------------------------------------------------------------------
1449
1450 bool wxTextCtrl::SendUpdateEvent()
1451 {
1452     // is event reporting suspended?
1453     if ( m_suppressNextUpdate )
1454     {
1455         // do process the next one
1456         m_suppressNextUpdate = FALSE;
1457
1458         return FALSE;
1459     }
1460
1461     wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, GetId());
1462     InitCommandEvent(event);
1463     event.SetString(GetValue());
1464
1465     return ProcessCommand(event);
1466 }
1467
1468 bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
1469 {
1470     switch ( param )
1471     {
1472         case EN_SETFOCUS:
1473         case EN_KILLFOCUS:
1474             {
1475                 wxFocusEvent event(param == EN_KILLFOCUS ? wxEVT_KILL_FOCUS
1476                                                          : wxEVT_SET_FOCUS,
1477                                    m_windowId);
1478                 event.SetEventObject(this);
1479                 GetEventHandler()->ProcessEvent(event);
1480             }
1481             break;
1482
1483         case EN_CHANGE:
1484             SendUpdateEvent();
1485             break;
1486
1487         case EN_MAXTEXT:
1488             // the text size limit has been hit -- try to increase it
1489             if ( !AdjustSpaceLimit() )
1490             {
1491                 wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, m_windowId);
1492                 InitCommandEvent(event);
1493                 event.SetString(GetValue());
1494                 ProcessCommand(event);
1495             }
1496             break;
1497
1498             // the other edit notification messages are not processed
1499         default:
1500             return FALSE;
1501     }
1502
1503     // processed
1504     return TRUE;
1505 }
1506
1507 WXHBRUSH wxTextCtrl::OnCtlColor(WXHDC pDC, WXHWND WXUNUSED(pWnd), WXUINT WXUNUSED(nCtlColor),
1508 #if wxUSE_CTL3D
1509                                WXUINT message,
1510                                WXWPARAM wParam,
1511                                WXLPARAM lParam
1512 #else
1513                                WXUINT WXUNUSED(message),
1514                                WXWPARAM WXUNUSED(wParam),
1515                                WXLPARAM WXUNUSED(lParam)
1516 #endif
1517     )
1518 {
1519 #if wxUSE_CTL3D
1520     if ( m_useCtl3D )
1521     {
1522         HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
1523         return (WXHBRUSH) hbrush;
1524     }
1525 #endif // wxUSE_CTL3D
1526
1527     HDC hdc = (HDC)pDC;
1528     if (GetParent()->GetTransparentBackground())
1529         SetBkMode(hdc, TRANSPARENT);
1530     else
1531         SetBkMode(hdc, OPAQUE);
1532
1533     wxColour colBack = GetBackgroundColour();
1534
1535     if (!IsEnabled() && (GetWindowStyle() & wxTE_MULTILINE) == 0)
1536         colBack = wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE);
1537
1538     ::SetBkColor(hdc, wxColourToRGB(colBack));
1539     ::SetTextColor(hdc, wxColourToRGB(GetForegroundColour()));
1540
1541     wxBrush *brush = wxTheBrushList->FindOrCreateBrush(colBack, wxSOLID);
1542
1543     return (WXHBRUSH)brush->GetResourceHandle();
1544 }
1545
1546 // In WIN16, need to override normal erasing because
1547 // Ctl3D doesn't use the wxWindows background colour.
1548 #ifdef __WIN16__
1549 void wxTextCtrl::OnEraseBackground(wxEraseEvent& event)
1550 {
1551     wxColour col(m_backgroundColour);
1552
1553 #if wxUSE_CTL3D
1554     if (m_useCtl3D)
1555         col = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
1556 #endif
1557
1558     RECT rect;
1559     ::GetClientRect(GetHwnd(), &rect);
1560
1561     COLORREF ref = wxColourToRGB(col);
1562     HBRUSH hBrush = ::CreateSolidBrush(ref);
1563     if ( !hBrush )
1564         wxLogLastError(wxT("CreateSolidBrush"));
1565
1566     HDC hdc = (HDC)event.GetDC()->GetHDC();
1567
1568     int mode = ::SetMapMode(hdc, MM_TEXT);
1569
1570     ::FillRect(hdc, &rect, hBrush);
1571     ::DeleteObject(hBrush);
1572     ::SetMapMode(hdc, mode);
1573
1574 }
1575 #endif // Win16
1576
1577 bool wxTextCtrl::AdjustSpaceLimit()
1578 {
1579 #ifndef __WIN16__
1580     unsigned int limit = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
1581
1582     // HACK: we try to automatically extend the limit for the amount of text
1583     //       to allow (interactively) entering more than 64Kb of text under
1584     //       Win9x but we shouldn't reset the text limit which was previously
1585     //       set explicitly with SetMaxLength()
1586     //
1587     //       we could solve this by storing the limit we set in wxTextCtrl but
1588     //       to save space we prefer to simply test here the actual limit
1589     //       value: we consider that SetMaxLength() can only be called for
1590     //       values < 32Kb
1591     if ( limit < 0x8000 )
1592     {
1593         // we've got more text than limit set by SetMaxLength()
1594         return FALSE;
1595     }
1596
1597     unsigned int len = ::GetWindowTextLength(GetHwnd());
1598     if ( len >= limit )
1599     {
1600         limit = len + 0x8000;    // 32Kb
1601
1602 #if wxUSE_RICHEDIT
1603         if ( IsRich() )
1604         {
1605             // as a nice side effect, this also allows passing limit > 64Kb
1606             ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, limit);
1607         }
1608         else
1609 #endif // wxUSE_RICHEDIT
1610         {
1611             if ( limit > 0xffff )
1612             {
1613                 // this will set it to a platform-dependent maximum (much more
1614                 // than 64Kb under NT)
1615                 limit = 0;
1616             }
1617
1618             ::SendMessage(GetHwnd(), EM_LIMITTEXT, limit, 0);
1619         }
1620     }
1621 #endif // !Win16
1622
1623     // we changed the limit
1624     return TRUE;
1625 }
1626
1627 bool wxTextCtrl::AcceptsFocus() const
1628 {
1629     // we don't want focus if we can't be edited unless we're a multiline
1630     // control because then it might be still nice to get focus from keyboard
1631     // to be able to scroll it without mouse
1632     return (IsEditable() || IsMultiLine()) && wxControl::AcceptsFocus();
1633 }
1634
1635 wxSize wxTextCtrl::DoGetBestSize() const
1636 {
1637     int cx, cy;
1638     wxGetCharSize(GetHWND(), &cx, &cy, &GetFont());
1639
1640     int wText = DEFAULT_ITEM_WIDTH;
1641
1642     int hText = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy);
1643     if ( m_windowStyle & wxTE_MULTILINE )
1644     {
1645         hText *= wxMax(GetNumberOfLines(), 5);
1646     }
1647     //else: for single line control everything is ok
1648
1649     return wxSize(wText, hText);
1650 }
1651
1652 // ----------------------------------------------------------------------------
1653 // standard handlers for standard edit menu events
1654 // ----------------------------------------------------------------------------
1655
1656 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1657 {
1658     Cut();
1659 }
1660
1661 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1662 {
1663     Copy();
1664 }
1665
1666 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1667 {
1668     Paste();
1669 }
1670
1671 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1672 {
1673     Undo();
1674 }
1675
1676 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1677 {
1678     Redo();
1679 }
1680
1681 void wxTextCtrl::OnDelete(wxCommandEvent& event)
1682 {
1683     long from, to;
1684     GetSelection(& from, & to);
1685     if (from != -1 && to != -1)
1686         Remove(from, to);
1687 }
1688
1689 void wxTextCtrl::OnSelectAll(wxCommandEvent& event)
1690 {
1691     SetSelection(-1, -1);
1692 }
1693
1694 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1695 {
1696     event.Enable( CanCut() );
1697 }
1698
1699 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1700 {
1701     event.Enable( CanCopy() );
1702 }
1703
1704 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1705 {
1706     event.Enable( CanPaste() );
1707 }
1708
1709 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1710 {
1711     event.Enable( CanUndo() );
1712 }
1713
1714 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1715 {
1716     event.Enable( CanRedo() );
1717 }
1718
1719 void wxTextCtrl::OnUpdateDelete(wxUpdateUIEvent& event)
1720 {
1721     long from, to;
1722     GetSelection(& from, & to);
1723     event.Enable(from != -1 && to != -1 && from != to && IsEditable()) ;
1724 }
1725
1726 void wxTextCtrl::OnUpdateSelectAll(wxUpdateUIEvent& event)
1727 {
1728     event.Enable(GetLastPosition() > 0);
1729 }
1730
1731 void wxTextCtrl::OnRightClick(wxMouseEvent& event)
1732 {
1733 #if wxUSE_RICHEDIT
1734     if (IsRich())
1735     {
1736         if (!m_privateContextMenu)
1737         {
1738             m_privateContextMenu = new wxMenu;
1739             m_privateContextMenu->Append(wxID_UNDO, _("&Undo"));
1740             m_privateContextMenu->Append(wxID_REDO, _("&Redo"));
1741             m_privateContextMenu->AppendSeparator();
1742             m_privateContextMenu->Append(wxID_CUT, _("Cu&t"));
1743             m_privateContextMenu->Append(wxID_COPY, _("&Copy"));
1744             m_privateContextMenu->Append(wxID_PASTE, _("&Paste"));
1745             m_privateContextMenu->Append(wxID_CLEAR, _("&Delete"));
1746             m_privateContextMenu->AppendSeparator();
1747             m_privateContextMenu->Append(wxID_SELECTALL, _("Select &All"));
1748         }
1749         PopupMenu(m_privateContextMenu, event.GetPosition());
1750         return;
1751     }
1752     else
1753 #endif
1754     event.Skip();
1755 }
1756
1757 // the rest of the file only deals with the rich edit controls
1758 #if wxUSE_RICHEDIT
1759
1760 // ----------------------------------------------------------------------------
1761 // EN_LINK processing
1762 // ----------------------------------------------------------------------------
1763
1764 bool wxTextCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
1765 {
1766     NMHDR *hdr = (NMHDR* )lParam;
1767     switch ( hdr->code )
1768     {
1769        case EN_MSGFILTER:
1770             {
1771                 const MSGFILTER *msgf = (MSGFILTER *)lParam;
1772                 UINT msg = msgf->msg;
1773
1774                 // this is a bit crazy but richedit 1.0 sends us all mouse
1775                 // events _except_ WM_LBUTTONUP (don't ask me why) so we have
1776                 // generate the wxWin events for this message manually
1777                 //
1778                 // NB: in fact, this is still not totally correct as it does
1779                 //     send us WM_LBUTTONUP if the selection was cleared by the
1780                 //     last click -- so currently we get 2 events in this case,
1781                 //     but as I don't see any obvious way to check for this I
1782                 //     leave this code in place because it's still better than
1783                 //     not getting left up events at all
1784                 if ( msg == WM_LBUTTONUP )
1785                 {
1786                     WXUINT flags = msgf->wParam;
1787                     int x = GET_X_LPARAM(msgf->lParam),
1788                         y = GET_Y_LPARAM(msgf->lParam);
1789
1790                     HandleMouseEvent(msg, x, y, flags);
1791                 }
1792             }
1793
1794             // return TRUE to process the event (and FALSE to ignore it)
1795             return TRUE;
1796
1797         case EN_LINK:
1798             {
1799                 const ENLINK *enlink = (ENLINK *)hdr;
1800
1801                 switch ( enlink->msg )
1802                 {
1803                     case WM_SETCURSOR:
1804                         // ok, so it is hardcoded - do we really nee to
1805                         // customize it?
1806                         ::SetCursor(GetHcursorOf(wxCursor(wxCURSOR_HAND)));
1807                         *result = TRUE;
1808                         break;
1809
1810                     case WM_MOUSEMOVE:
1811                     case WM_LBUTTONDOWN:
1812                     case WM_LBUTTONUP:
1813                     case WM_LBUTTONDBLCLK:
1814                     case WM_RBUTTONDOWN:
1815                     case WM_RBUTTONUP:
1816                     case WM_RBUTTONDBLCLK:
1817                         // send a mouse event
1818                         {
1819                             static const wxEventType eventsMouse[] =
1820                             {
1821                                 wxEVT_MOTION,
1822                                 wxEVT_LEFT_DOWN,
1823                                 wxEVT_LEFT_UP,
1824                                 wxEVT_LEFT_DCLICK,
1825                                 wxEVT_RIGHT_DOWN,
1826                                 wxEVT_RIGHT_UP,
1827                                 wxEVT_RIGHT_DCLICK,
1828                             };
1829
1830                             // the event ids are consecutive
1831                             wxMouseEvent
1832                                 evtMouse(eventsMouse[enlink->msg - WM_MOUSEMOVE]);
1833
1834                             InitMouseEvent(evtMouse,
1835                                            GET_X_LPARAM(enlink->lParam),
1836                                            GET_Y_LPARAM(enlink->lParam),
1837                                            enlink->wParam);
1838
1839                             wxTextUrlEvent event(m_windowId, evtMouse,
1840                                                  enlink->chrg.cpMin,
1841                                                  enlink->chrg.cpMax);
1842
1843                             InitCommandEvent(event);
1844
1845                             *result = ProcessCommand(event);
1846                         }
1847                         break;
1848                 }
1849             }
1850             return TRUE;
1851     }
1852
1853     // not processed, leave it to the base class
1854     return wxTextCtrlBase::MSWOnNotify(idCtrl, lParam, result);
1855 }
1856
1857 // ----------------------------------------------------------------------------
1858 // colour setting for the rich edit controls
1859 // ----------------------------------------------------------------------------
1860
1861 bool wxTextCtrl::SetBackgroundColour(const wxColour& colour)
1862 {
1863     if ( !wxTextCtrlBase::SetBackgroundColour(colour) )
1864     {
1865         // colour didn't really change
1866         return FALSE;
1867     }
1868
1869     if ( IsRich() )
1870     {
1871         // rich edit doesn't use WM_CTLCOLOR, hence we need to send
1872         // EM_SETBKGNDCOLOR additionally
1873         ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour));
1874     }
1875
1876     return TRUE;
1877 }
1878
1879 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1880 {
1881     if ( !wxTextCtrlBase::SetForegroundColour(colour) )
1882     {
1883         // colour didn't really change
1884         return FALSE;
1885     }
1886
1887     if ( IsRich() )
1888     {
1889         // change the colour of everything
1890         CHARFORMAT cf;
1891         wxZeroMemory(cf);
1892         cf.cbSize = sizeof(cf);
1893         cf.dwMask = CFM_COLOR;
1894         cf.crTextColor = wxColourToRGB(colour);
1895         ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf);
1896     }
1897
1898     return TRUE;
1899 }
1900
1901 // ----------------------------------------------------------------------------
1902 // styling support for rich edit controls
1903 // ----------------------------------------------------------------------------
1904
1905 #if wxUSE_RICHEDIT
1906
1907 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
1908 {
1909     if ( !IsRich() )
1910     {
1911         // can't do it with normal text control
1912         return FALSE;
1913     }
1914
1915     // the richedit 1.0 doesn't handle setting background colour, so don't
1916     // even try to do anything if it's the only thing we want to change
1917     if ( m_verRichEdit == 1 && !style.HasFont() && !style.HasTextColour() )
1918     {
1919         // nothing to do: return TRUE if there was really nothing to do and
1920         // FALSE if we failed to set bg colour
1921         return !style.HasBackgroundColour();
1922     }
1923
1924     // order the range if needed
1925     if ( start > end )
1926     {
1927         long tmp = start;
1928         start = end;
1929         end = tmp;
1930     }
1931
1932     // we can only change the format of the selection, so select the range we
1933     // want and restore the old selection later
1934     long startOld, endOld;
1935     GetSelection(&startOld, &endOld);
1936
1937     // but do we really have to change the selection?
1938     bool changeSel = start != startOld || end != endOld;
1939
1940     if ( changeSel )
1941     {
1942         DoSetSelection(start, end, FALSE /* don't scroll caret into view */);
1943     }
1944
1945     // initialize CHARFORMAT struct
1946 #if wxUSE_RICHEDIT2
1947     CHARFORMAT2 cf;
1948 #else
1949     CHARFORMAT cf;
1950 #endif
1951
1952     wxZeroMemory(cf);
1953
1954     // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
1955     // CHARFORMAT in that case
1956 #if wxUSE_RICHEDIT2
1957     if ( m_verRichEdit == 1 )
1958     {
1959         // this is the only thing the control is going to grok
1960         cf.cbSize = sizeof(CHARFORMAT);
1961     }
1962     else
1963 #endif
1964     {
1965         // CHARFORMAT or CHARFORMAT2
1966         cf.cbSize = sizeof(cf);
1967     }
1968
1969     if ( style.HasFont() )
1970     {
1971         // VZ: CFM_CHARSET doesn't seem to do anything at all in RichEdit 2.0
1972         //     but using it doesn't seem to hurt neither so leaving it for now
1973
1974         cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET |
1975                      CFM_ITALIC | CFM_BOLD | CFM_UNDERLINE;
1976
1977         // fill in data from LOGFONT but recalculate lfHeight because we need
1978         // the real height in twips and not the negative number which
1979         // wxFillLogFont() returns (this is correct in general and works with
1980         // the Windows font mapper, but not here)
1981         LOGFONT lf;
1982         wxFillLogFont(&lf, &style.GetFont());
1983         cf.yHeight = 20*style.GetFont().GetPointSize(); // 1 pt = 20 twips
1984         cf.bCharSet = lf.lfCharSet;
1985         cf.bPitchAndFamily = lf.lfPitchAndFamily;
1986         wxStrncpy( cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName) );
1987
1988         // also deal with underline/italic/bold attributes: note that we must
1989         // always set CFM_ITALIC &c bits in dwMask, even if we don't set the
1990         // style to allow clearing it
1991         if ( lf.lfItalic )
1992         {
1993             cf.dwEffects |= CFE_ITALIC;
1994         }
1995
1996         if ( lf.lfWeight == FW_BOLD )
1997         {
1998             cf.dwEffects |= CFE_BOLD;
1999         }
2000
2001         if ( lf.lfUnderline )
2002         {
2003             cf.dwEffects |= CFE_UNDERLINE;
2004         }
2005
2006         // strikeout fonts are not supported by wxWindows
2007     }
2008
2009     if ( style.HasTextColour() )
2010     {
2011         cf.dwMask |= CFM_COLOR;
2012         cf.crTextColor = wxColourToRGB(style.GetTextColour());
2013     }
2014
2015 #if wxUSE_RICHEDIT2
2016     if ( m_verRichEdit != 1 && style.HasBackgroundColour() )
2017     {
2018         cf.dwMask |= CFM_BACKCOLOR;
2019         cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
2020     }
2021 #endif // wxUSE_RICHEDIT2
2022
2023     // do format the selection
2024     bool ok = ::SendMessage(GetHwnd(), EM_SETCHARFORMAT,
2025                             SCF_SELECTION, (LPARAM)&cf) != 0;
2026     if ( !ok )
2027     {
2028         wxLogDebug(_T("SendMessage(EM_SETCHARFORMAT, SCF_SELECTION) failed"));
2029     }
2030
2031     if ( changeSel )
2032     {
2033         // restore the original selection
2034         DoSetSelection(startOld, endOld, FALSE);
2035     }
2036
2037     return ok;
2038 }
2039
2040 bool wxTextCtrl::SetDefaultStyle(const wxTextAttr& style)
2041 {
2042     if ( !wxTextCtrlBase::SetDefaultStyle(style) )
2043         return FALSE;
2044
2045     // we have to do this or the style wouldn't apply for the text typed by the
2046     // user
2047     long posLast = GetLastPosition();
2048     SetStyle(posLast, posLast, m_defaultStyle);
2049
2050     return TRUE;
2051 }
2052
2053 #endif
2054
2055 // ----------------------------------------------------------------------------
2056 // wxRichEditModule
2057 // ----------------------------------------------------------------------------
2058
2059 bool wxRichEditModule::OnInit()
2060 {
2061     // don't do anything - we will load it when needed
2062     return TRUE;
2063 }
2064
2065 void wxRichEditModule::OnExit()
2066 {
2067     for ( size_t i = 0; i < WXSIZEOF(ms_hRichEdit); i++ )
2068     {
2069         if ( ms_hRichEdit[i] )
2070         {
2071             ::FreeLibrary(ms_hRichEdit[i]);
2072         }
2073     }
2074 }
2075
2076 /* static */
2077 bool wxRichEditModule::Load(int version)
2078 {
2079     // we don't support loading richedit 3.0 as I don't know how to distinguish
2080     // it from 2.0 anyhow
2081     wxCHECK_MSG( version == 1 || version == 2, FALSE,
2082                  _T("incorrect richedit control version requested") );
2083
2084     // make it the index in the array
2085     version--;
2086
2087     if ( ms_hRichEdit[version] == (HINSTANCE)-1 )
2088     {
2089         // we had already tried to load it and failed
2090         return FALSE;
2091     }
2092
2093     if ( ms_hRichEdit[version] )
2094     {
2095         // we've already got this one
2096         return TRUE;
2097     }
2098
2099     wxString dllname = version ? _T("riched20") : _T("riched32");
2100     dllname += _T(".dll");
2101
2102     ms_hRichEdit[version] = ::LoadLibrary(dllname);
2103
2104     if ( !ms_hRichEdit[version] )
2105     {
2106         wxLogSysError(_("Could not load Rich Edit DLL '%s'"), dllname.c_str());
2107
2108         ms_hRichEdit[version] = (HINSTANCE)-1;
2109
2110         return FALSE;
2111     }
2112
2113     return TRUE;
2114 }
2115
2116 #endif // wxUSE_RICHEDIT
2117
2118 #endif // wxUSE_TEXTCTRL