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             // Windows already sends an update event for single-line
 760             // controls.
 761             if ( m_windowStyle & wxTE_MULTILINE )
 762                 SendUpdateEvent();
 763         }
 764     }
 765
 766     AdjustSpaceLimit();
 767 }
 768
 769 void wxTextCtrl::AppendText(const wxString& text)
 770 {
 771     SetInsertionPointEnd();
 772
 773     WriteText(text);
 774
 775 #if wxUSE_RICHEDIT
 776     if ( IsMultiLine() && GetRichVersion() > 1 )
 777     {
 778         // setting the caret to the end and showing it simply doesn't work for
 779         // RichEdit 2.0 -- force it to still do what we want
 780         ::SendMessage(GetHwnd(), EM_LINESCROLL, 0, GetNumberOfLines());
 781     }
 782 #endif // wxUSE_RICHEDIT
 783 }
 784
 785 void wxTextCtrl::Clear()
 786 {
 787     ::SetWindowText(GetHwnd(), wxT(""));
 788
 789 #if wxUSE_RICHEDIT
 790     if ( !IsRich() )
 791 #endif // wxUSE_RICHEDIT
 792     {
 793         // rich edit controls send EN_UPDATE from WM_SETTEXT handler themselves
 794         // but the normal ones don't -- make Clear() behaviour consistent by
 795         // always sending this event
 796
 797         // Windows already sends an update event for single-line
 798         // controls.
 799         if ( m_windowStyle & wxTE_MULTILINE )
 800             SendUpdateEvent();
 801     }
 802 }
 803
 804 #ifdef __WIN32__
 805
 806 bool wxTextCtrl::EmulateKeyPress(const wxKeyEvent& event)
 807 {
 808     SetFocus();
 809
 810     size_t lenOld = GetValue().length();
 811
 812     wxUint32 code = event.GetRawKeyCode();
 813     ::keybd_event(code, 0, 0 /* key press */, 0);
 814     ::keybd_event(code, 0, KEYEVENTF_KEYUP, 0);
 815
 816     // assume that any alphanumeric key changes the total number of characters
 817     // in the control - this should work in 99% of cases
 818     return GetValue().length() != lenOld;
 819 }
 820
 821 #endif // __WIN32__
 822
 823 // ----------------------------------------------------------------------------
 824 // Clipboard operations
 825 // ----------------------------------------------------------------------------
 826
 827 void wxTextCtrl::Copy()
 828 {
 829     if (CanCopy())
 830     {
 831         ::SendMessage(GetHwnd(), WM_COPY, 0, 0L);
 832     }
 833 }
 834
 835 void wxTextCtrl::Cut()
 836 {
 837     if (CanCut())
 838     {
 839         ::SendMessage(GetHwnd(), WM_CUT, 0, 0L);
 840     }
 841 }
 842
 843 void wxTextCtrl::Paste()
 844 {
 845     if (CanPaste())
 846     {
 847         ::SendMessage(GetHwnd(), WM_PASTE, 0, 0L);
 848     }
 849 }
 850
 851 bool wxTextCtrl::HasSelection() const
 852 {
 853     long from, to;
 854     GetSelection(&from, &to);
 855     return from != to;
 856 }
 857
 858 bool wxTextCtrl::CanCopy() const
 859 {
 860     // Can copy if there's a selection
 861     return HasSelection();
 862 }
 863
 864 bool wxTextCtrl::CanCut() const
 865 {
 866     return CanCopy() && IsEditable();
 867 }
 868
 869 bool wxTextCtrl::CanPaste() const
 870 {
 871     if ( !IsEditable() )
 872         return FALSE;
 873
 874 #if wxUSE_RICHEDIT
 875     if ( IsRich() )
 876     {
 877         UINT cf = 0; // 0 == any format
 878
 879         return ::SendMessage(GetHwnd(), EM_CANPASTE, cf, 0) != 0;
 880     }
 881 #endif // wxUSE_RICHEDIT
 882
 883     // Standard edit control: check for straight text on clipboard
 884     if ( !::OpenClipboard(GetHwndOf(wxTheApp->GetTopWindow())) )
 885         return FALSE;
 886
 887     bool isTextAvailable = ::IsClipboardFormatAvailable(CF_TEXT) != 0;
 888     ::CloseClipboard();
 889
 890     return isTextAvailable;
 891 }
 892
 893 // ----------------------------------------------------------------------------
 894 // Accessors
 895 // ----------------------------------------------------------------------------
 896
 897 void wxTextCtrl::SetEditable(bool editable)
 898 {
 899     HWND hWnd = GetHwnd();
 900     SendMessage(hWnd, EM_SETREADONLY, (WPARAM)!editable, (LPARAM)0L);
 901 }
 902
 903 void wxTextCtrl::SetInsertionPoint(long pos)
 904 {
 905     DoSetSelection(pos, pos);
 906 }
 907
 908 void wxTextCtrl::SetInsertionPointEnd()
 909 {
 910     long pos;
 911
 912 #if wxUSE_RICHEDIT
 913     if ( m_verRichEdit == 1 )
 914     {
 915         // we don't have to waste time calling GetLastPosition() in this case
 916         pos = -1;
 917     }
 918     else // !RichEdit 1.0
 919 #endif // wxUSE_RICHEDIT
 920     {
 921         pos = GetLastPosition();
 922     }
 923
 924     SetInsertionPoint(pos);
 925 }
 926
 927 long wxTextCtrl::GetInsertionPoint() const
 928 {
 929 #if wxUSE_RICHEDIT
 930     if ( IsRich() )
 931     {
 932         CHARRANGE range;
 933         range.cpMin = 0;
 934         range.cpMax = 0;
 935         SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
 936         return range.cpMin;
 937     }
 938 #endif // wxUSE_RICHEDIT
 939
 940     DWORD Pos = (DWORD)SendMessage(GetHwnd(), EM_GETSEL, 0, 0L);
 941     return Pos & 0xFFFF;
 942 }
 943
 944 long wxTextCtrl::GetLastPosition() const
 945 {
 946     int numLines = GetNumberOfLines();
 947     long posStartLastLine = XYToPosition(0, numLines - 1);
 948
 949     long lenLastLine = GetLengthOfLineContainingPos(posStartLastLine);
 950
 951     return posStartLastLine + lenLastLine;
 952 }
 953
 954 // If the return values from and to are the same, there is no
 955 // selection.
 956 void wxTextCtrl::GetSelection(long* from, long* to) const
 957 {
 958 #if wxUSE_RICHEDIT
 959     if ( IsRich() )
 960     {
 961         CHARRANGE charRange;
 962         ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &charRange);
 963
 964         *from = charRange.cpMin;
 965         *to = charRange.cpMax;
 966     }
 967     else
 968 #endif // !wxUSE_RICHEDIT
 969     {
 970         DWORD dwStart, dwEnd;
 971         ::SendMessage(GetHwnd(), EM_GETSEL, (WPARAM)&dwStart, (LPARAM)&dwEnd);
 972
 973         *from = dwStart;
 974         *to = dwEnd;
 975     }
 976 }
 977
 978 bool wxTextCtrl::IsEditable() const
 979 {
 980     // strangely enough, we may be called before the control is created: our
 981     // own Create() calls MSWGetStyle() which calls AcceptsFocus() which calls
 982     // us
 983     if ( !m_hWnd )
 984         return TRUE;
 985
 986     long style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
 987
 988     return (style & ES_READONLY) == 0;
 989 }
 990
 991 // ----------------------------------------------------------------------------
 992 // selection
 993 // ----------------------------------------------------------------------------
 994
 995 void wxTextCtrl::SetSelection(long from, long to)
 996 {
 997     // if from and to are both -1, it means (in wxWindows) that all text should
 998     // be selected - translate into Windows convention
 999     if ( (from == -1) && (to == -1) )
1000     {
1001         from = 0;
1002         to = -1;
1003     }
1004
1005     DoSetSelection(from, to);
1006 }
1007
1008 void wxTextCtrl::DoSetSelection(long from, long to, bool scrollCaret)
1009 {
1010     HWND hWnd = GetHwnd();
1011
1012 #ifdef __WIN32__
1013 #if wxUSE_RICHEDIT
1014     if ( IsRich() )
1015     {
1016         // richedit 3.0 (i.e. the version living in riched20.dll distributed
1017         // with Windows 2000 and beyond) doesn't honour EM_SCROLLCARET when
1018         // emulating richedit 2.0 unless the control has focus or ECO_NOHIDESEL
1019         // option is set (but it does work ok in richedit 1.0 mode...)
1020         //
1021         // so to make it work we either need to give focus to it here which
1022         // will probably create many problems (dummy focus events; window
1023         // containing the text control being brought to foreground
1024         // unexpectedly; ...) or to temporarily set ECO_NOHIDESEL which may
1025         // create other problems too -- or it might not, so let's try to do it
1026         if ( GetRichVersion() > 1 )
1027         {
1028             if ( !HasFlag(wxTE_NOHIDESEL) )
1029             {
1030                 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1031                               ECOOP_OR, ECO_NOHIDESEL);
1032             }
1033             //else: everything is already ok
1034         }
1035
1036         CHARRANGE range;
1037         range.cpMin = from;
1038         range.cpMax = to;
1039         SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM) &range);
1040     }
1041     else
1042 #endif // wxUSE_RICHEDIT
1043     {
1044         SendMessage(hWnd, EM_SETSEL, (WPARAM)from, (LPARAM)to);
1045     }
1046
1047     if ( scrollCaret )
1048     {
1049         SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
1050     }
1051
1052 #if wxUSE_RICHEDIT
1053     // restore ECO_NOHIDESEL if we changed it
1054     if ( GetRichVersion() > 1 && !HasFlag(wxTE_NOHIDESEL) )
1055     {
1056         ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1057                       ECOOP_AND, ~ECO_NOHIDESEL);
1058     }
1059 #endif // wxUSE_RICHEDIT
1060
1061 #else // Win16
1062     // WPARAM is 0: selection is scrolled into view
1063     SendMessage(hWnd, EM_SETSEL, (WPARAM)0, (LPARAM)MAKELONG(from, to));
1064 #endif // Win32/16
1065 }
1066
1067 // ----------------------------------------------------------------------------
1068 // Editing
1069 // ----------------------------------------------------------------------------
1070
1071 void wxTextCtrl::Replace(long from, long to, const wxString& value)
1072 {
1073     // Set selection and remove it
1074     DoSetSelection(from, to, FALSE /* don't scroll caret into view */);
1075
1076     SendMessage(GetHwnd(), EM_REPLACESEL,
1077 #ifdef __WIN32__
1078                 TRUE,
1079 #else
1080                 FALSE,
1081 #endif
1082                 (LPARAM)value.c_str());
1083 }
1084
1085 void wxTextCtrl::Remove(long from, long to)
1086 {
1087     Replace(from, to, _T(""));
1088 }
1089
1090 bool wxTextCtrl::LoadFile(const wxString& file)
1091 {
1092     if ( wxTextCtrlBase::LoadFile(file) )
1093     {
1094         // update the size limit if needed
1095         AdjustSpaceLimit();
1096
1097         return TRUE;
1098     }
1099
1100     return FALSE;
1101 }
1102
1103 bool wxTextCtrl::IsModified() const
1104 {
1105     return SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0;
1106 }
1107
1108 // Makes 'unmodified'
1109 void wxTextCtrl::DiscardEdits()
1110 {
1111     SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0L);
1112 }
1113
1114 int wxTextCtrl::GetNumberOfLines() const
1115 {
1116     return (int)SendMessage(GetHwnd(), EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0);
1117 }
1118
1119 long wxTextCtrl::XYToPosition(long x, long y) const
1120 {
1121     // This gets the char index for the _beginning_ of this line
1122     long charIndex = SendMessage(GetHwnd(), EM_LINEINDEX, (WPARAM)y, (LPARAM)0);
1123
1124     return charIndex + x;
1125 }
1126
1127 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
1128 {
1129     HWND hWnd = GetHwnd();
1130
1131     // This gets the line number containing the character
1132     long lineNo;
1133 #if wxUSE_RICHEDIT
1134     if ( IsRich() )
1135     {
1136         lineNo = SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, (LPARAM)pos);
1137     }
1138     else
1139 #endif // wxUSE_RICHEDIT
1140     {
1141         lineNo = SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, 0);
1142     }
1143
1144     if ( lineNo == -1 )
1145     {
1146         // no such line
1147         return FALSE;
1148     }
1149
1150     // This gets the char index for the _beginning_ of this line
1151     long charIndex = SendMessage(hWnd, EM_LINEINDEX, (WPARAM)lineNo, (LPARAM)0);
1152     if ( charIndex == -1 )
1153     {
1154         return FALSE;
1155     }
1156
1157     // The X position must therefore be the different between pos and charIndex
1158     if ( x )
1159         *x = pos - charIndex;
1160     if ( y )
1161         *y = lineNo;
1162
1163     return TRUE;
1164 }
1165
1166 void wxTextCtrl::ShowPosition(long pos)
1167 {
1168     HWND hWnd = GetHwnd();
1169
1170     // To scroll to a position, we pass the number of lines and characters
1171     // to scroll *by*. This means that we need to:
1172     // (1) Find the line position of the current line.
1173     // (2) Find the line position of pos.
1174     // (3) Scroll by (pos - current).
1175     // For now, ignore the horizontal scrolling.
1176
1177     // Is this where scrolling is relative to - the line containing the caret?
1178     // Or is the first visible line??? Try first visible line.
1179 //    int currentLineLineNo1 = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)-1, (LPARAM)0L);
1180
1181     int currentLineLineNo = (int)SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, (WPARAM)0, (LPARAM)0L);
1182
1183     int specifiedLineLineNo = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, (LPARAM)0L);
1184
1185     int linesToScroll = specifiedLineLineNo - currentLineLineNo;
1186
1187     if (linesToScroll != 0)
1188       (void)SendMessage(hWnd, EM_LINESCROLL, (WPARAM)0, (LPARAM)linesToScroll);
1189 }
1190
1191 long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const
1192 {
1193     return ::SendMessage(GetHwnd(), EM_LINELENGTH, (WPARAM)pos, 0);
1194 }
1195
1196 int wxTextCtrl::GetLineLength(long lineNo) const
1197 {
1198     long pos = XYToPosition(0, lineNo);
1199
1200     return GetLengthOfLineContainingPos(pos);
1201 }
1202
1203 wxString wxTextCtrl::GetLineText(long lineNo) const
1204 {
1205     size_t len = (size_t)GetLineLength(lineNo) + 1;
1206
1207     // there must be at least enough place for the length WORD in the
1208     // buffer
1209     len += sizeof(WORD);
1210
1211     wxString str;
1212     wxChar *buf = str.GetWriteBuf(len);
1213
1214     *(WORD *)buf = (WORD)len;
1215     len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf);
1216     buf[len] = 0;
1217
1218     str.UngetWriteBuf(len);
1219
1220     return str;
1221 }
1222
1223 void wxTextCtrl::SetMaxLength(unsigned long len)
1224 {
1225     ::SendMessage(GetHwnd(), EM_LIMITTEXT, len, 0);
1226 }
1227
1228 // ----------------------------------------------------------------------------
1229 // Undo/redo
1230 // ----------------------------------------------------------------------------
1231
1232 void wxTextCtrl::Undo()
1233 {
1234     if (CanUndo())
1235     {
1236         ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1237     }
1238 }
1239
1240 void wxTextCtrl::Redo()
1241 {
1242     if (CanRedo())
1243     {
1244         // Same as Undo, since Undo undoes the undo, i.e. a redo.
1245         ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1246     }
1247 }
1248
1249 bool wxTextCtrl::CanUndo() const
1250 {
1251     return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1252 }
1253
1254 bool wxTextCtrl::CanRedo() const
1255 {
1256     return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1257 }
1258
1259 // ----------------------------------------------------------------------------
1260 // implemenation details
1261 // ----------------------------------------------------------------------------
1262
1263 void wxTextCtrl::Command(wxCommandEvent & event)
1264 {
1265     SetValue(event.GetString());
1266     ProcessCommand (event);
1267 }
1268
1269 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
1270 {
1271     // By default, load the first file into the text window.
1272     if (event.GetNumberOfFiles() > 0)
1273     {
1274         LoadFile(event.GetFiles()[0]);
1275     }
1276 }
1277
1278 // ----------------------------------------------------------------------------
1279 // kbd input processing
1280 // ----------------------------------------------------------------------------
1281
1282 bool wxTextCtrl::MSWShouldPreProcessMessage(WXMSG* pMsg)
1283 {
1284     MSG *msg = (MSG *)pMsg;
1285
1286     // check for our special keys here: if we don't do it and the parent frame
1287     // uses them as accelerators, they wouldn't work at all, so we disable
1288     // usual preprocessing for them
1289     if ( msg->message == WM_KEYDOWN )
1290     {
1291         WORD vkey = (WORD) msg->wParam;
1292         if ( (HIWORD(msg->lParam) & KF_ALTDOWN) == KF_ALTDOWN )
1293         {
1294             if ( vkey == VK_BACK )
1295                 return FALSE;
1296         }
1297         else // no Alt
1298         {
1299             // we want to process some Ctrl-foo and Shift-bar but no key
1300             // combinations without either Ctrl or Shift nor with both of them
1301             // pressed
1302             const int ctrl = wxIsCtrlDown(),
1303                       shift = wxIsShiftDown();
1304             switch ( ctrl + shift )
1305             {
1306                 default:
1307                     wxFAIL_MSG( _T("how many modifiers have we got?") );
1308                     // fall through
1309
1310                 case 0:
1311                 case 2:
1312                     break;
1313
1314                 case 1:
1315                     // either Ctrl or Shift pressed
1316                     if ( ctrl )
1317                     {
1318                         switch ( vkey )
1319                         {
1320                             case 'C':
1321                             case 'V':
1322                             case 'X':
1323                             case VK_INSERT:
1324                             case VK_DELETE:
1325                             case VK_HOME:
1326                             case VK_END:
1327                                 return FALSE;
1328                         }
1329                     }
1330                     else // Shift is pressed
1331                     {
1332                         if ( vkey == VK_INSERT || vkey == VK_DELETE )
1333                             return FALSE;
1334                     }
1335             }
1336         }
1337     }
1338
1339     return wxControl::MSWShouldPreProcessMessage(pMsg);
1340 }
1341
1342 void wxTextCtrl::OnChar(wxKeyEvent& event)
1343 {
1344     switch ( event.KeyCode() )
1345     {
1346         case WXK_RETURN:
1347             if ( !(m_windowStyle & wxTE_MULTILINE) )
1348             {
1349                 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1350                 InitCommandEvent(event);
1351                 event.SetString(GetValue());
1352                 if ( GetEventHandler()->ProcessEvent(event) )
1353                     return;
1354             }
1355             //else: multiline controls need Enter for themselves
1356
1357             break;
1358
1359         case WXK_TAB:
1360             // always produce navigation event - even if we process TAB
1361             // ourselves the fact that we got here means that the user code
1362             // decided to skip processing of this TAB - probably to let it
1363             // do its default job.
1364             {
1365                 wxNavigationKeyEvent eventNav;
1366                 eventNav.SetDirection(!event.ShiftDown());
1367                 eventNav.SetWindowChange(event.ControlDown());
1368                 eventNav.SetEventObject(this);
1369
1370                 if ( GetParent()->GetEventHandler()->ProcessEvent(eventNav) )
1371                     return;
1372             }
1373             break;
1374     }
1375
1376     // no, we didn't process it
1377     event.Skip();
1378 }
1379
1380 long wxTextCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
1381 {
1382     long lRc = wxTextCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
1383
1384     if ( nMsg == WM_GETDLGCODE )
1385     {
1386         // we always want the chars and the arrows: the arrows for navigation
1387         // and the chars because we want Ctrl-C to work even in a read only
1388         // control
1389         long lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
1390
1391         if ( IsEditable() )
1392         {
1393             // we may have several different cases:
1394             // 1. normal case: both TAB and ENTER are used for dlg navigation
1395             // 2. ctrl which wants TAB for itself: ENTER is used to pass to the
1396             //    next control in the dialog
1397             // 3. ctrl which wants ENTER for itself: TAB is used for dialog
1398             //    navigation
1399             // 4. ctrl which wants both TAB and ENTER: Ctrl-ENTER is used to go
1400             //    to the next control
1401
1402             // the multiline edit control should always get <Return> for itself
1403             if ( HasFlag(wxTE_PROCESS_ENTER) || HasFlag(wxTE_MULTILINE) )
1404                 lDlgCode |= DLGC_WANTMESSAGE;
1405
1406             if ( HasFlag(wxTE_PROCESS_TAB) )
1407                 lDlgCode |= DLGC_WANTTAB;
1408
1409             lRc |= lDlgCode;
1410         }
1411         else // !editable
1412         {
1413             // NB: use "=", not "|=" as the base class version returns the
1414             //     same flags is this state as usual (i.e. including
1415             //     DLGC_WANTMESSAGE). This is strange (how does it work in the
1416             //     native Win32 apps?) but for now live with it.
1417             lRc = lDlgCode;
1418         }
1419     }
1420
1421     return lRc;
1422 }
1423
1424 // ----------------------------------------------------------------------------
1425 // text control event processing
1426 // ----------------------------------------------------------------------------
1427
1428 bool wxTextCtrl::SendUpdateEvent()
1429 {
1430     // is event reporting suspended?
1431     if ( m_suppressNextUpdate )
1432     {
1433         // do process the next one
1434         m_suppressNextUpdate = FALSE;
1435
1436         return FALSE;
1437     }
1438
1439     wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, GetId());
1440     InitCommandEvent(event);
1441     event.SetString(GetValue());
1442
1443     return ProcessCommand(event);
1444 }
1445
1446 bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
1447 {
1448     switch ( param )
1449     {
1450         case EN_SETFOCUS:
1451         case EN_KILLFOCUS:
1452             {
1453                 wxFocusEvent event(param == EN_KILLFOCUS ? wxEVT_KILL_FOCUS
1454                                                          : wxEVT_SET_FOCUS,
1455                                    m_windowId);
1456                 event.SetEventObject(this);
1457                 GetEventHandler()->ProcessEvent(event);
1458             }
1459             break;
1460
1461         case EN_CHANGE:
1462             SendUpdateEvent();
1463             break;
1464
1465         case EN_MAXTEXT:
1466             // the text size limit has been hit -- try to increase it
1467             if ( !AdjustSpaceLimit() )
1468             {
1469                 wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, m_windowId);
1470                 InitCommandEvent(event);
1471                 event.SetString(GetValue());
1472                 ProcessCommand(event);
1473             }
1474             break;
1475
1476             // the other edit notification messages are not processed
1477         default:
1478             return FALSE;
1479     }
1480
1481     // processed
1482     return TRUE;
1483 }
1484
1485 WXHBRUSH wxTextCtrl::OnCtlColor(WXHDC pDC, WXHWND WXUNUSED(pWnd), WXUINT WXUNUSED(nCtlColor),
1486 #if wxUSE_CTL3D
1487                                WXUINT message,
1488                                WXWPARAM wParam,
1489                                WXLPARAM lParam
1490 #else
1491                                WXUINT WXUNUSED(message),
1492                                WXWPARAM WXUNUSED(wParam),
1493                                WXLPARAM WXUNUSED(lParam)
1494 #endif
1495     )
1496 {
1497 #if wxUSE_CTL3D
1498     if ( m_useCtl3D )
1499     {
1500         HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
1501         return (WXHBRUSH) hbrush;
1502     }
1503 #endif // wxUSE_CTL3D
1504
1505     HDC hdc = (HDC)pDC;
1506     if (GetParent()->GetTransparentBackground())
1507         SetBkMode(hdc, TRANSPARENT);
1508     else
1509         SetBkMode(hdc, OPAQUE);
1510
1511     wxColour colBack = GetBackgroundColour();
1512
1513     if (!IsEnabled() && (GetWindowStyle() & wxTE_MULTILINE) == 0)
1514         colBack = wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE);
1515
1516     ::SetBkColor(hdc, wxColourToRGB(colBack));
1517     ::SetTextColor(hdc, wxColourToRGB(GetForegroundColour()));
1518
1519     wxBrush *brush = wxTheBrushList->FindOrCreateBrush(colBack, wxSOLID);
1520
1521     return (WXHBRUSH)brush->GetResourceHandle();
1522 }
1523
1524 // In WIN16, need to override normal erasing because
1525 // Ctl3D doesn't use the wxWindows background colour.
1526 #ifdef __WIN16__
1527 void wxTextCtrl::OnEraseBackground(wxEraseEvent& event)
1528 {
1529     wxColour col(m_backgroundColour);
1530
1531 #if wxUSE_CTL3D
1532     if (m_useCtl3D)
1533         col = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
1534 #endif
1535
1536     RECT rect;
1537     ::GetClientRect(GetHwnd(), &rect);
1538
1539     COLORREF ref = wxColourToRGB(col);
1540     HBRUSH hBrush = ::CreateSolidBrush(ref);
1541     if ( !hBrush )
1542         wxLogLastError(wxT("CreateSolidBrush"));
1543
1544     HDC hdc = (HDC)event.GetDC()->GetHDC();
1545
1546     int mode = ::SetMapMode(hdc, MM_TEXT);
1547
1548     ::FillRect(hdc, &rect, hBrush);
1549     ::DeleteObject(hBrush);
1550     ::SetMapMode(hdc, mode);
1551
1552 }
1553 #endif // Win16
1554
1555 bool wxTextCtrl::AdjustSpaceLimit()
1556 {
1557 #ifndef __WIN16__
1558     unsigned int limit = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
1559
1560     // HACK: we try to automatically extend the limit for the amount of text
1561     //       to allow (interactively) entering more than 64Kb of text under
1562     //       Win9x but we shouldn't reset the text limit which was previously
1563     //       set explicitly with SetMaxLength()
1564     //
1565     //       we could solve this by storing the limit we set in wxTextCtrl but
1566     //       to save space we prefer to simply test here the actual limit
1567     //       value: we consider that SetMaxLength() can only be called for
1568     //       values < 32Kb
1569     if ( limit < 0x8000 )
1570     {
1571         // we've got more text than limit set by SetMaxLength()
1572         return FALSE;
1573     }
1574
1575     unsigned int len = ::GetWindowTextLength(GetHwnd());
1576     if ( len >= limit )
1577     {
1578         limit = len + 0x8000;    // 32Kb
1579
1580 #if wxUSE_RICHEDIT
1581         if ( IsRich() )
1582         {
1583             // as a nice side effect, this also allows passing limit > 64Kb
1584             ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, limit);
1585         }
1586         else
1587 #endif // wxUSE_RICHEDIT
1588         {
1589             if ( limit > 0xffff )
1590             {
1591                 // this will set it to a platform-dependent maximum (much more
1592                 // than 64Kb under NT)
1593                 limit = 0;
1594             }
1595
1596             ::SendMessage(GetHwnd(), EM_LIMITTEXT, limit, 0);
1597         }
1598     }
1599 #endif // !Win16
1600
1601     // we changed the limit
1602     return TRUE;
1603 }
1604
1605 bool wxTextCtrl::AcceptsFocus() const
1606 {
1607     // we don't want focus if we can't be edited unless we're a multiline
1608     // control because then it might be still nice to get focus from keyboard
1609     // to be able to scroll it without mouse
1610     return (IsEditable() || IsMultiLine()) && wxControl::AcceptsFocus();
1611 }
1612
1613 wxSize wxTextCtrl::DoGetBestSize() const
1614 {
1615     int cx, cy;
1616     wxGetCharSize(GetHWND(), &cx, &cy, &GetFont());
1617
1618     int wText = DEFAULT_ITEM_WIDTH;
1619
1620     int hText = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy);
1621     if ( m_windowStyle & wxTE_MULTILINE )
1622     {
1623         hText *= wxMax(GetNumberOfLines(), 5);
1624     }
1625     //else: for single line control everything is ok
1626
1627     return wxSize(wText, hText);
1628 }
1629
1630 // ----------------------------------------------------------------------------
1631 // standard handlers for standard edit menu events
1632 // ----------------------------------------------------------------------------
1633
1634 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1635 {
1636     Cut();
1637 }
1638
1639 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1640 {
1641     Copy();
1642 }
1643
1644 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1645 {
1646     Paste();
1647 }
1648
1649 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1650 {
1651     Undo();
1652 }
1653
1654 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1655 {
1656     Redo();
1657 }
1658
1659 void wxTextCtrl::OnDelete(wxCommandEvent& event)
1660 {
1661     long from, to;
1662     GetSelection(& from, & to);
1663     if (from != -1 && to != -1)
1664         Remove(from, to);
1665 }
1666
1667 void wxTextCtrl::OnSelectAll(wxCommandEvent& event)
1668 {
1669     SetSelection(-1, -1);
1670 }
1671
1672 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1673 {
1674     event.Enable( CanCut() );
1675 }
1676
1677 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1678 {
1679     event.Enable( CanCopy() );
1680 }
1681
1682 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1683 {
1684     event.Enable( CanPaste() );
1685 }
1686
1687 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1688 {
1689     event.Enable( CanUndo() );
1690 }
1691
1692 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1693 {
1694     event.Enable( CanRedo() );
1695 }
1696
1697 void wxTextCtrl::OnUpdateDelete(wxUpdateUIEvent& event)
1698 {
1699     long from, to;
1700     GetSelection(& from, & to);
1701     event.Enable(from != -1 && to != -1 && from != to && IsEditable()) ;
1702 }
1703
1704 void wxTextCtrl::OnUpdateSelectAll(wxUpdateUIEvent& event)
1705 {
1706     event.Enable(GetLastPosition() > 0);
1707 }
1708
1709 void wxTextCtrl::OnRightClick(wxMouseEvent& event)
1710 {
1711 #if wxUSE_RICHEDIT
1712     if (IsRich())
1713     {
1714         if (!m_privateContextMenu)
1715         {
1716             m_privateContextMenu = new wxMenu;
1717             m_privateContextMenu->Append(wxID_UNDO, _("&Undo"));
1718             m_privateContextMenu->Append(wxID_REDO, _("&Redo"));
1719             m_privateContextMenu->AppendSeparator();
1720             m_privateContextMenu->Append(wxID_CUT, _("Cu&t"));
1721             m_privateContextMenu->Append(wxID_COPY, _("&Copy"));
1722             m_privateContextMenu->Append(wxID_PASTE, _("&Paste"));
1723             m_privateContextMenu->Append(wxID_CLEAR, _("&Delete"));
1724             m_privateContextMenu->AppendSeparator();
1725             m_privateContextMenu->Append(wxID_SELECTALL, _("Select &All"));
1726         }
1727         PopupMenu(m_privateContextMenu, event.GetPosition());
1728         return;
1729     }
1730     else
1731 #endif
1732     event.Skip();
1733 }
1734
1735 // the rest of the file only deals with the rich edit controls
1736 #if wxUSE_RICHEDIT
1737
1738 // ----------------------------------------------------------------------------
1739 // EN_LINK processing
1740 // ----------------------------------------------------------------------------
1741
1742 bool wxTextCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
1743 {
1744 #ifndef __WXWINE__
1745     NMHDR *hdr = (NMHDR* )lParam;
1746     switch ( hdr->code )
1747     {
1748        case EN_MSGFILTER:
1749             {
1750                 const MSGFILTER *msgf = (MSGFILTER *)lParam;
1751                 UINT msg = msgf->msg;
1752
1753                 // this is a bit crazy but richedit 1.0 sends us all mouse
1754                 // events _except_ WM_LBUTTONUP (don't ask me why) so we have
1755                 // generate the wxWin events for this message manually
1756                 //
1757                 // NB: in fact, this is still not totally correct as it does
1758                 //     send us WM_LBUTTONUP if the selection was cleared by the
1759                 //     last click -- so currently we get 2 events in this case,
1760                 //     but as I don't see any obvious way to check for this I
1761                 //     leave this code in place because it's still better than
1762                 //     not getting left up events at all
1763                 if ( msg == WM_LBUTTONUP )
1764                 {
1765                     WXUINT flags = msgf->wParam;
1766                     int x = GET_X_LPARAM(msgf->lParam),
1767                         y = GET_Y_LPARAM(msgf->lParam);
1768
1769                     HandleMouseEvent(msg, x, y, flags);
1770                 }
1771             }
1772
1773             // return TRUE to process the event (and FALSE to ignore it)
1774             return TRUE;
1775
1776         case EN_LINK:
1777             {
1778                 const ENLINK *enlink = (ENLINK *)hdr;
1779
1780                 switch ( enlink->msg )
1781                 {
1782                     case WM_SETCURSOR:
1783                         // ok, so it is hardcoded - do we really nee to
1784                         // customize it?
1785                         ::SetCursor(GetHcursorOf(wxCursor(wxCURSOR_HAND)));
1786                         *result = TRUE;
1787                         break;
1788
1789                     case WM_MOUSEMOVE:
1790                     case WM_LBUTTONDOWN:
1791                     case WM_LBUTTONUP:
1792                     case WM_LBUTTONDBLCLK:
1793                     case WM_RBUTTONDOWN:
1794                     case WM_RBUTTONUP:
1795                     case WM_RBUTTONDBLCLK:
1796                         // send a mouse event
1797                         {
1798                             static const wxEventType eventsMouse[] =
1799                             {
1800                                 wxEVT_MOTION,
1801                                 wxEVT_LEFT_DOWN,
1802                                 wxEVT_LEFT_UP,
1803                                 wxEVT_LEFT_DCLICK,
1804                                 wxEVT_RIGHT_DOWN,
1805                                 wxEVT_RIGHT_UP,
1806                                 wxEVT_RIGHT_DCLICK,
1807                             };
1808
1809                             // the event ids are consecutive
1810                             wxMouseEvent
1811                                 evtMouse(eventsMouse[enlink->msg - WM_MOUSEMOVE]);
1812
1813                             InitMouseEvent(evtMouse,
1814                                            GET_X_LPARAM(enlink->lParam),
1815                                            GET_Y_LPARAM(enlink->lParam),
1816                                            enlink->wParam);
1817
1818                             wxTextUrlEvent event(m_windowId, evtMouse,
1819                                                  enlink->chrg.cpMin,
1820                                                  enlink->chrg.cpMax);
1821
1822                             InitCommandEvent(event);
1823
1824                             *result = ProcessCommand(event);
1825                         }
1826                         break;
1827                 }
1828             }
1829             return TRUE;
1830     }
1831 #endif
1832
1833     // not processed, leave it to the base class
1834     return wxTextCtrlBase::MSWOnNotify(idCtrl, lParam, result);
1835 }
1836
1837 // ----------------------------------------------------------------------------
1838 // colour setting for the rich edit controls
1839 // ----------------------------------------------------------------------------
1840
1841 bool wxTextCtrl::SetBackgroundColour(const wxColour& colour)
1842 {
1843     if ( !wxTextCtrlBase::SetBackgroundColour(colour) )
1844     {
1845         // colour didn't really change
1846         return FALSE;
1847     }
1848
1849     if ( IsRich() )
1850     {
1851         // rich edit doesn't use WM_CTLCOLOR, hence we need to send
1852         // EM_SETBKGNDCOLOR additionally
1853         ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour));
1854     }
1855
1856     return TRUE;
1857 }
1858
1859 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1860 {
1861     if ( !wxTextCtrlBase::SetForegroundColour(colour) )
1862     {
1863         // colour didn't really change
1864         return FALSE;
1865     }
1866
1867     if ( IsRich() )
1868     {
1869         // change the colour of everything
1870         CHARFORMAT cf;
1871         wxZeroMemory(cf);
1872         cf.cbSize = sizeof(cf);
1873         cf.dwMask = CFM_COLOR;
1874         cf.crTextColor = wxColourToRGB(colour);
1875         ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf);
1876     }
1877
1878     return TRUE;
1879 }
1880
1881 // ----------------------------------------------------------------------------
1882 // styling support for rich edit controls
1883 // ----------------------------------------------------------------------------
1884
1885 #if wxUSE_RICHEDIT
1886
1887 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
1888 {
1889 #ifdef __WXWINE__
1890     return FALSE;
1891 #else
1892     if ( !IsRich() )
1893     {
1894         // can't do it with normal text control
1895         return FALSE;
1896     }
1897
1898     // the richedit 1.0 doesn't handle setting background colour, so don't
1899     // even try to do anything if it's the only thing we want to change
1900     if ( m_verRichEdit == 1 && !style.HasFont() && !style.HasTextColour() )
1901     {
1902         // nothing to do: return TRUE if there was really nothing to do and
1903         // FALSE if we failed to set bg colour
1904         return !style.HasBackgroundColour();
1905     }
1906
1907     // order the range if needed
1908     if ( start > end )
1909     {
1910         long tmp = start;
1911         start = end;
1912         end = tmp;
1913     }
1914
1915     // we can only change the format of the selection, so select the range we
1916     // want and restore the old selection later
1917     long startOld, endOld;
1918     GetSelection(&startOld, &endOld);
1919
1920     // but do we really have to change the selection?
1921     bool changeSel = start != startOld || end != endOld;
1922
1923     if ( changeSel )
1924     {
1925         DoSetSelection(start, end, FALSE /* don't scroll caret into view */);
1926     }
1927
1928     // initialize CHARFORMAT struct
1929 #if wxUSE_RICHEDIT2
1930     CHARFORMAT2 cf;
1931 #else
1932     CHARFORMAT cf;
1933 #endif
1934
1935     wxZeroMemory(cf);
1936
1937     // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
1938     // CHARFORMAT in that case
1939 #if wxUSE_RICHEDIT2
1940     if ( m_verRichEdit == 1 )
1941     {
1942         // this is the only thing the control is going to grok
1943         cf.cbSize = sizeof(CHARFORMAT);
1944     }
1945     else
1946 #endif
1947     {
1948         // CHARFORMAT or CHARFORMAT2
1949         cf.cbSize = sizeof(cf);
1950     }
1951
1952     if ( style.HasFont() )
1953     {
1954         // VZ: CFM_CHARSET doesn't seem to do anything at all in RichEdit 2.0
1955         //     but using it doesn't seem to hurt neither so leaving it for now
1956
1957         cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET |
1958                      CFM_ITALIC | CFM_BOLD | CFM_UNDERLINE;
1959
1960         // fill in data from LOGFONT but recalculate lfHeight because we need
1961         // the real height in twips and not the negative number which
1962         // wxFillLogFont() returns (this is correct in general and works with
1963         // the Windows font mapper, but not here)
1964         LOGFONT lf;
1965         wxFillLogFont(&lf, &style.GetFont());
1966         cf.yHeight = 20*style.GetFont().GetPointSize(); // 1 pt = 20 twips
1967         cf.bCharSet = lf.lfCharSet;
1968         cf.bPitchAndFamily = lf.lfPitchAndFamily;
1969         wxStrncpy( cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName) );
1970
1971         // also deal with underline/italic/bold attributes: note that we must
1972         // always set CFM_ITALIC &c bits in dwMask, even if we don't set the
1973         // style to allow clearing it
1974         if ( lf.lfItalic )
1975         {
1976             cf.dwEffects |= CFE_ITALIC;
1977         }
1978
1979         if ( lf.lfWeight == FW_BOLD )
1980         {
1981             cf.dwEffects |= CFE_BOLD;
1982         }
1983
1984         if ( lf.lfUnderline )
1985         {
1986             cf.dwEffects |= CFE_UNDERLINE;
1987         }
1988
1989         // strikeout fonts are not supported by wxWindows
1990     }
1991
1992     if ( style.HasTextColour() )
1993     {
1994         cf.dwMask |= CFM_COLOR;
1995         cf.crTextColor = wxColourToRGB(style.GetTextColour());
1996     }
1997
1998 #if wxUSE_RICHEDIT2
1999     if ( m_verRichEdit != 1 && style.HasBackgroundColour() )
2000     {
2001         cf.dwMask |= CFM_BACKCOLOR;
2002         cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
2003     }
2004 #endif // wxUSE_RICHEDIT2
2005
2006     // do format the selection
2007     bool ok = ::SendMessage(GetHwnd(), EM_SETCHARFORMAT,
2008                             SCF_SELECTION, (LPARAM)&cf) != 0;
2009     if ( !ok )
2010     {
2011         wxLogDebug(_T("SendMessage(EM_SETCHARFORMAT, SCF_SELECTION) failed"));
2012     }
2013
2014     if ( changeSel )
2015     {
2016         // restore the original selection
2017         DoSetSelection(startOld, endOld, FALSE);
2018     }
2019
2020     return ok;
2021 #endif
2022 }
2023
2024 bool wxTextCtrl::SetDefaultStyle(const wxTextAttr& style)
2025 {
2026     if ( !wxTextCtrlBase::SetDefaultStyle(style) )
2027         return FALSE;
2028
2029     // we have to do this or the style wouldn't apply for the text typed by the
2030     // user
2031     long posLast = GetLastPosition();
2032     SetStyle(posLast, posLast, m_defaultStyle);
2033
2034     return TRUE;
2035 }
2036
2037 #endif
2038
2039 // ----------------------------------------------------------------------------
2040 // wxRichEditModule
2041 // ----------------------------------------------------------------------------
2042
2043 bool wxRichEditModule::OnInit()
2044 {
2045     // don't do anything - we will load it when needed
2046     return TRUE;
2047 }
2048
2049 void wxRichEditModule::OnExit()
2050 {
2051     for ( size_t i = 0; i < WXSIZEOF(ms_hRichEdit); i++ )
2052     {
2053         if ( ms_hRichEdit[i] )
2054         {
2055             ::FreeLibrary(ms_hRichEdit[i]);
2056         }
2057     }
2058 }
2059
2060 /* static */
2061 bool wxRichEditModule::Load(int version)
2062 {
2063     // we don't support loading richedit 3.0 as I don't know how to distinguish
2064     // it from 2.0 anyhow
2065     wxCHECK_MSG( version == 1 || version == 2, FALSE,
2066                  _T("incorrect richedit control version requested") );
2067
2068     // make it the index in the array
2069     version--;
2070
2071     if ( ms_hRichEdit[version] == (HINSTANCE)-1 )
2072     {
2073         // we had already tried to load it and failed
2074         return FALSE;
2075     }
2076
2077     if ( ms_hRichEdit[version] )
2078     {
2079         // we've already got this one
2080         return TRUE;
2081     }
2082
2083     wxString dllname = version ? _T("riched20") : _T("riched32");
2084     dllname += _T(".dll");
2085
2086     ms_hRichEdit[version] = ::LoadLibrary(dllname);
2087
2088     if ( !ms_hRichEdit[version] )
2089     {
2090         wxLogSysError(_("Could not load Rich Edit DLL '%s'"), dllname.c_str());
2091
2092         ms_hRichEdit[version] = (HINSTANCE)-1;
2093
2094         return FALSE;
2095     }
2096
2097     return TRUE;
2098 }
2099
2100 #endif // wxUSE_RICHEDIT
2101
2102 #endif // wxUSE_TEXTCTRL