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