src/msw/textctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        msw/textctrl.cpp
   3 // Purpose:     wxTextCtrl
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #if wxUSE_TEXTCTRL && !(defined(__SMARTPHONE__) && defined(__WXWINCE__))
  28
  29 #ifndef WX_PRECOMP
  30     #include "wx/textctrl.h"
  31     #include "wx/settings.h"
  32     #include "wx/brush.h"
  33     #include "wx/utils.h"
  34     #include "wx/intl.h"
  35     #include "wx/log.h"
  36     #include "wx/app.h"
  37     #include "wx/menu.h"
  38     #include "wx/math.h"
  39 #endif
  40
  41 #include "wx/module.h"
  42
  43 #if wxUSE_CLIPBOARD
  44     #include "wx/clipbrd.h"
  45 #endif
  46
  47 #include "wx/textfile.h"
  48
  49 #include <windowsx.h>
  50
  51 #include "wx/msw/private.h"
  52 #include "wx/msw/winundef.h"
  53
  54 #include <string.h>
  55 #include <stdlib.h>
  56
  57 #ifndef __WXWINCE__
  58 #include <sys/types.h>
  59 #endif
  60
  61 #if wxUSE_RICHEDIT
  62
  63 // old mingw32 has richedit stuff directly in windows.h and doesn't have
  64 // richedit.h at all
  65 #if !defined(__GNUWIN32_OLD__) || defined(__CYGWIN10__)
  66     #include <richedit.h>
  67 #endif
  68
  69 #include "wx/msw/missing.h"
  70
  71 #endif // wxUSE_RICHEDIT
  72
  73 // ----------------------------------------------------------------------------
  74 // private classes
  75 // ----------------------------------------------------------------------------
  76
  77 #if wxUSE_RICHEDIT
  78
  79 // this module initializes RichEdit DLL(s) if needed
  80 class wxRichEditModule : public wxModule
  81 {
  82 public:
  83     enum Version
  84     {
  85         Version_1,          // riched32.dll
  86         Version_2or3,       // both use riched20.dll
  87         Version_41,         // msftedit.dll (XP SP1 and Windows 2003)
  88         Version_Max
  89     };
  90
  91     virtual bool OnInit();
  92     virtual void OnExit();
  93
  94     // load the richedit DLL for the specified version of rich edit
  95     static bool Load(Version version);
  96
  97 private:
  98     // the handles to richedit 1.0 and 2.0 (or 3.0) DLLs
  99     static HINSTANCE ms_hRichEdit[Version_Max];
 100
 101     DECLARE_DYNAMIC_CLASS(wxRichEditModule)
 102 };
 103
 104 HINSTANCE wxRichEditModule::ms_hRichEdit[Version_Max] = { NULL, NULL, NULL };
 105
 106 IMPLEMENT_DYNAMIC_CLASS(wxRichEditModule, wxModule)
 107
 108 #endif // wxUSE_RICHEDIT
 109
 110 // a small class used to set m_updatesCount to 0 (to filter duplicate events if
 111 // necessary) and to reset it back to -1 afterwards
 112 class UpdatesCountFilter
 113 {
 114 public:
 115     UpdatesCountFilter(int& count)
 116         : m_count(count)
 117     {
 118         wxASSERT_MSG( m_count == -1, _T("wrong initial m_updatesCount value") );
 119
 120         m_count = 0;
 121     }
 122
 123     ~UpdatesCountFilter()
 124     {
 125         m_count = -1;
 126     }
 127
 128     // return true if an event has been received
 129     bool GotUpdate() const
 130     {
 131         return m_count == 1;
 132     }
 133
 134 private:
 135     int& m_count;
 136
 137     DECLARE_NO_COPY_CLASS(UpdatesCountFilter)
 138 };
 139
 140 // ----------------------------------------------------------------------------
 141 // event tables and other macros
 142 // ----------------------------------------------------------------------------
 143
 144 #if wxUSE_EXTENDED_RTTI
 145 WX_DEFINE_FLAGS( wxTextCtrlStyle )
 146
 147 wxBEGIN_FLAGS( wxTextCtrlStyle )
 148     // new style border flags, we put them first to
 149     // use them for streaming out
 150     wxFLAGS_MEMBER(wxBORDER_SIMPLE)
 151     wxFLAGS_MEMBER(wxBORDER_SUNKEN)
 152     wxFLAGS_MEMBER(wxBORDER_DOUBLE)
 153     wxFLAGS_MEMBER(wxBORDER_RAISED)
 154     wxFLAGS_MEMBER(wxBORDER_STATIC)
 155     wxFLAGS_MEMBER(wxBORDER_NONE)
 156
 157     // old style border flags
 158     wxFLAGS_MEMBER(wxSIMPLE_BORDER)
 159     wxFLAGS_MEMBER(wxSUNKEN_BORDER)
 160     wxFLAGS_MEMBER(wxDOUBLE_BORDER)
 161     wxFLAGS_MEMBER(wxRAISED_BORDER)
 162     wxFLAGS_MEMBER(wxSTATIC_BORDER)
 163     wxFLAGS_MEMBER(wxBORDER)
 164
 165     // standard window styles
 166     wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
 167     wxFLAGS_MEMBER(wxCLIP_CHILDREN)
 168     wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
 169     wxFLAGS_MEMBER(wxWANTS_CHARS)
 170     wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
 171     wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
 172     wxFLAGS_MEMBER(wxVSCROLL)
 173     wxFLAGS_MEMBER(wxHSCROLL)
 174
 175     wxFLAGS_MEMBER(wxTE_PROCESS_ENTER)
 176     wxFLAGS_MEMBER(wxTE_PROCESS_TAB)
 177     wxFLAGS_MEMBER(wxTE_MULTILINE)
 178     wxFLAGS_MEMBER(wxTE_PASSWORD)
 179     wxFLAGS_MEMBER(wxTE_READONLY)
 180     wxFLAGS_MEMBER(wxHSCROLL)
 181     wxFLAGS_MEMBER(wxTE_RICH)
 182     wxFLAGS_MEMBER(wxTE_RICH2)
 183     wxFLAGS_MEMBER(wxTE_AUTO_URL)
 184     wxFLAGS_MEMBER(wxTE_NOHIDESEL)
 185     wxFLAGS_MEMBER(wxTE_LEFT)
 186     wxFLAGS_MEMBER(wxTE_CENTRE)
 187     wxFLAGS_MEMBER(wxTE_RIGHT)
 188     wxFLAGS_MEMBER(wxTE_DONTWRAP)
 189     wxFLAGS_MEMBER(wxTE_LINEWRAP)
 190     wxFLAGS_MEMBER(wxTE_WORDWRAP)
 191
 192 wxEND_FLAGS( wxTextCtrlStyle )
 193
 194 IMPLEMENT_DYNAMIC_CLASS_XTI(wxTextCtrl, wxControl,"wx/textctrl.h")
 195
 196 wxBEGIN_PROPERTIES_TABLE(wxTextCtrl)
 197     wxEVENT_PROPERTY( TextUpdated , wxEVT_COMMAND_TEXT_UPDATED , wxCommandEvent )
 198     wxEVENT_PROPERTY( TextEnter , wxEVT_COMMAND_TEXT_ENTER , wxCommandEvent )
 199
 200     wxPROPERTY( Font , wxFont , SetFont , GetFont  , EMPTY_MACROVALUE, 0 /*flags*/ , wxT("Helpstring") , wxT("group") )
 201     wxPROPERTY( Value , wxString , SetValue, GetValue, wxString() , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
 202     wxPROPERTY_FLAGS( WindowStyle , wxTextCtrlStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
 203 wxEND_PROPERTIES_TABLE()
 204
 205 wxBEGIN_HANDLERS_TABLE(wxTextCtrl)
 206 wxEND_HANDLERS_TABLE()
 207
 208 wxCONSTRUCTOR_6( wxTextCtrl , wxWindow* , Parent , wxWindowID , Id , wxString , Value , wxPoint , Position , wxSize , Size , long , WindowStyle)
 209 #else
 210 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxControl)
 211 #endif
 212
 213
 214 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
 215     EVT_CHAR(wxTextCtrl::OnChar)
 216     EVT_DROP_FILES(wxTextCtrl::OnDropFiles)
 217
 218 #if wxUSE_RICHEDIT
 219     EVT_CONTEXT_MENU(wxTextCtrl::OnContextMenu)
 220 #endif
 221
 222     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 223     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 224     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 225     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 226     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 227     EVT_MENU(wxID_CLEAR, wxTextCtrl::OnDelete)
 228     EVT_MENU(wxID_SELECTALL, wxTextCtrl::OnSelectAll)
 229
 230     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 231     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 232     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 233     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 234     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 235     EVT_UPDATE_UI(wxID_CLEAR, wxTextCtrl::OnUpdateDelete)
 236     EVT_UPDATE_UI(wxID_SELECTALL, wxTextCtrl::OnUpdateSelectAll)
 237
 238     EVT_SET_FOCUS(wxTextCtrl::OnSetFocus)
 239 END_EVENT_TABLE()
 240
 241 // ============================================================================
 242 // implementation
 243 // ============================================================================
 244
 245 // ----------------------------------------------------------------------------
 246 // creation
 247 // ----------------------------------------------------------------------------
 248
 249 void wxTextCtrl::Init()
 250 {
 251 #if wxUSE_RICHEDIT
 252     m_verRichEdit = 0;
 253 #endif // wxUSE_RICHEDIT
 254
 255     m_privateContextMenu = NULL;
 256     m_updatesCount = -1;
 257     m_isNativeCaretShown = true;
 258 }
 259
 260 wxTextCtrl::~wxTextCtrl()
 261 {
 262     delete m_privateContextMenu;
 263 }
 264
 265 bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id,
 266                         const wxString& value,
 267                         const wxPoint& pos,
 268                         const wxSize& size,
 269                         long style,
 270                         const wxValidator& validator,
 271                         const wxString& name)
 272 {
 273 #ifdef __WXWINCE__
 274     if ((style & wxBORDER_MASK) == 0)
 275         style |= wxBORDER_SIMPLE;
 276 #endif
 277
 278     // base initialization
 279     if ( !CreateControl(parent, id, pos, size, style, validator, name) )
 280         return false;
 281
 282     // translate wxWin style flags to MSW ones
 283     WXDWORD msStyle = MSWGetCreateWindowFlags();
 284
 285     // do create the control - either an EDIT or RICHEDIT
 286     wxString windowClass = wxT("EDIT");
 287
 288 #if defined(__POCKETPC__) || defined(__SMARTPHONE__)
 289     // A control that capitalizes the first letter
 290     if (style & wxTE_CAPITALIZE)
 291         windowClass = wxT("CAPEDIT");
 292 #endif
 293
 294 #if wxUSE_RICHEDIT
 295     if ( m_windowStyle & wxTE_AUTO_URL )
 296     {
 297         // automatic URL detection only works in RichEdit 2.0+
 298         m_windowStyle |= wxTE_RICH2;
 299     }
 300
 301     if ( m_windowStyle & wxTE_RICH2 )
 302     {
 303         // using richedit 2.0 implies using wxTE_RICH
 304         m_windowStyle |= wxTE_RICH;
 305     }
 306
 307     // we need to load the richedit DLL before creating the rich edit control
 308     if ( m_windowStyle & wxTE_RICH )
 309     {
 310         // versions 2.0, 3.0 and 4.1 of rich edit are mostly compatible with
 311         // each other but not with version 1.0, so we have separate flags for
 312         // the version 1.0 and the others (and so m_verRichEdit may be 0 (plain
 313         // EDIT control), 1 for version 1.0 or 2 for any higher version)
 314         //
 315         // notice that 1.0 has no Unicode support at all so in Unicode build we
 316         // must use another version
 317
 318 #if wxUSE_UNICODE
 319         m_verRichEdit = 2;
 320 #else // !wxUSE_UNICODE
 321         m_verRichEdit = m_windowStyle & wxTE_RICH2 ? 2 : 1;
 322 #endif // wxUSE_UNICODE/!wxUSE_UNICODE
 323
 324         if ( m_verRichEdit == 2 )
 325         {
 326             if ( wxRichEditModule::Load(wxRichEditModule::Version_41) )
 327             {
 328                 // yes, class name for version 4.1 really is 5.0
 329                 windowClass = _T("RICHEDIT50W");
 330             }
 331             else if ( wxRichEditModule::Load(wxRichEditModule::Version_2or3) )
 332             {
 333                 windowClass = _T("RichEdit20")
 334 #if wxUSE_UNICODE
 335                               _T("W");
 336 #else // ANSI
 337                               _T("A");
 338 #endif // Unicode/ANSI
 339             }
 340             else // failed to load msftedit.dll and riched20.dll
 341             {
 342                 m_verRichEdit = 1;
 343             }
 344         }
 345
 346         if ( m_verRichEdit == 1 )
 347         {
 348             if ( wxRichEditModule::Load(wxRichEditModule::Version_1) )
 349             {
 350                 windowClass = _T("RICHEDIT");
 351             }
 352             else // failed to load any richedit control DLL
 353             {
 354                 // only give the error msg once if the DLL can't be loaded
 355                 static bool s_errorGiven = false; // MT ok as only used by GUI
 356
 357                 if ( !s_errorGiven )
 358                 {
 359                     wxLogError(_("Impossible to create a rich edit control, using simple text control instead. Please reinstall riched32.dll"));
 360
 361                     s_errorGiven = true;
 362                 }
 363
 364                 m_verRichEdit = 0;
 365             }
 366         }
 367     }
 368 #endif // wxUSE_RICHEDIT
 369
 370     // we need to turn '\n's into "\r\n"s for the multiline controls
 371     wxString valueWin;
 372     if ( m_windowStyle & wxTE_MULTILINE )
 373     {
 374         valueWin = wxTextFile::Translate(value, wxTextFileType_Dos);
 375     }
 376     else // single line
 377     {
 378         valueWin = value;
 379     }
 380
 381     if ( !MSWCreateControl(windowClass, msStyle, pos, size, valueWin) )
 382         return false;
 383
 384 #if wxUSE_RICHEDIT
 385     if ( IsRich() )
 386     {
 387         // enable the events we're interested in: we want to get EN_CHANGE as
 388         // for the normal controls
 389         LPARAM mask = ENM_CHANGE;
 390
 391         if ( GetRichVersion() == 1 )
 392         {
 393             // we also need EN_MSGFILTER for richedit 1.0 for the reasons
 394             // explained in its handler
 395            mask |= ENM_MOUSEEVENTS;
 396
 397            // we also need to force the appearance of the vertical scrollbar
 398            // initially as otherwise the control doesn't refresh correctly
 399            // after resize: but once the vertical scrollbar had been shown
 400            // (even if it's subsequently hidden) it does
 401            //
 402            // this is clearly a bug and for now it has been only noticed under
 403            // Windows XP, so if we're sure it works correctly under other
 404            // systems we could do this only for XP
 405            SetSize(-1, 1); // 1 is small enough to force vert scrollbar
 406            SetSize(size);
 407         }
 408         else if ( m_windowStyle & wxTE_AUTO_URL )
 409         {
 410             mask |= ENM_LINK;
 411
 412             ::SendMessage(GetHwnd(), EM_AUTOURLDETECT, TRUE, 0);
 413         }
 414
 415         ::SendMessage(GetHwnd(), EM_SETEVENTMASK, 0, mask);
 416     }
 417 #endif // wxUSE_RICHEDIT
 418
 419     return true;
 420 }
 421
 422 // Make sure the window style (etc.) reflects the HWND style (roughly)
 423 void wxTextCtrl::AdoptAttributesFromHWND()
 424 {
 425     wxWindow::AdoptAttributesFromHWND();
 426
 427     HWND hWnd = GetHwnd();
 428     long style = ::GetWindowLong(hWnd, GWL_STYLE);
 429
 430     // retrieve the style to see whether this is an edit or richedit ctrl
 431 #if wxUSE_RICHEDIT
 432     wxString classname = wxGetWindowClass(GetHWND());
 433
 434     if ( classname.IsSameAs(_T("EDIT"), false /* no case */) )
 435     {
 436         m_verRichEdit = 0;
 437     }
 438     else // rich edit?
 439     {
 440         wxChar c;
 441         if ( wxSscanf(classname, _T("RichEdit%d0%c"), &m_verRichEdit, &c) != 2 )
 442         {
 443             wxLogDebug(_T("Unknown edit control '%s'."), classname.c_str());
 444
 445             m_verRichEdit = 0;
 446         }
 447     }
 448 #endif // wxUSE_RICHEDIT
 449
 450     if (style & ES_MULTILINE)
 451         m_windowStyle |= wxTE_MULTILINE;
 452     if (style & ES_PASSWORD)
 453         m_windowStyle |= wxTE_PASSWORD;
 454     if (style & ES_READONLY)
 455         m_windowStyle |= wxTE_READONLY;
 456     if (style & ES_WANTRETURN)
 457         m_windowStyle |= wxTE_PROCESS_ENTER;
 458     if (style & ES_CENTER)
 459         m_windowStyle |= wxTE_CENTRE;
 460     if (style & ES_RIGHT)
 461         m_windowStyle |= wxTE_RIGHT;
 462 }
 463
 464 WXDWORD wxTextCtrl::MSWGetStyle(long style, WXDWORD *exstyle) const
 465 {
 466     long msStyle = wxControl::MSWGetStyle(style, exstyle);
 467
 468     // styles which we alaways add by default
 469     if ( style & wxTE_MULTILINE )
 470     {
 471         wxASSERT_MSG( !(style & wxTE_PROCESS_ENTER),
 472                       wxT("wxTE_PROCESS_ENTER style is ignored for multiline text controls (they always process it)") );
 473
 474         msStyle |= ES_MULTILINE | ES_WANTRETURN;
 475         if ( !(style & wxTE_NO_VSCROLL) )
 476         {
 477             // always adjust the vertical scrollbar automatically if we have it
 478             msStyle |= WS_VSCROLL | ES_AUTOVSCROLL;
 479
 480 #if wxUSE_RICHEDIT
 481             // we have to use this style for the rich edit controls because
 482             // without it the vertical scrollbar never appears at all in
 483             // richedit 3.0 because of our ECO_NOHIDESEL hack (search for it)
 484             if ( style & wxTE_RICH2 )
 485             {
 486                 msStyle |= ES_DISABLENOSCROLL;
 487             }
 488 #endif // wxUSE_RICHEDIT
 489         }
 490
 491         style |= wxTE_PROCESS_ENTER;
 492     }
 493     else // !multiline
 494     {
 495         // there is really no reason to not have this style for single line
 496         // text controls
 497         msStyle |= ES_AUTOHSCROLL;
 498     }
 499
 500     // note that wxTE_DONTWRAP is the same as wxHSCROLL so if we have a horz
 501     // scrollbar, there is no wrapping -- which makes sense
 502     if ( style & wxTE_DONTWRAP )
 503     {
 504         // automatically scroll the control horizontally as necessary
 505         //
 506         // NB: ES_AUTOHSCROLL is needed for richedit controls or they don't
 507         //     show horz scrollbar at all, even in spite of WS_HSCROLL, and as
 508         //     it doesn't seem to do any harm for plain edit controls, add it
 509         //     always
 510         msStyle |= WS_HSCROLL | ES_AUTOHSCROLL;
 511     }
 512
 513     if ( style & wxTE_READONLY )
 514         msStyle |= ES_READONLY;
 515
 516     if ( style & wxTE_PASSWORD )
 517         msStyle |= ES_PASSWORD;
 518
 519     if ( style & wxTE_NOHIDESEL )
 520         msStyle |= ES_NOHIDESEL;
 521
 522     // note that we can't do do "& wxTE_LEFT" as wxTE_LEFT == 0
 523     if ( style & wxTE_CENTRE )
 524         msStyle |= ES_CENTER;
 525     else if ( style & wxTE_RIGHT )
 526         msStyle |= ES_RIGHT;
 527     else
 528         msStyle |= ES_LEFT; // ES_LEFT is 0 as well but for consistency...
 529
 530     return msStyle;
 531 }
 532
 533 void wxTextCtrl::SetWindowStyleFlag(long style)
 534 {
 535 #if wxUSE_RICHEDIT
 536     // we have to deal with some styles separately because they can't be
 537     // changed by simply calling SetWindowLong(GWL_STYLE) but can be changed
 538     // using richedit-specific EM_SETOPTIONS
 539     if ( IsRich() &&
 540             ((style & wxTE_NOHIDESEL) != (GetWindowStyle() & wxTE_NOHIDESEL)) )
 541     {
 542         bool set = (style & wxTE_NOHIDESEL) != 0;
 543
 544         ::SendMessage(GetHwnd(), EM_SETOPTIONS, set ? ECOOP_OR : ECOOP_AND,
 545                       set ? ECO_NOHIDESEL : ~ECO_NOHIDESEL);
 546     }
 547 #endif // wxUSE_RICHEDIT
 548
 549     wxControl::SetWindowStyleFlag(style);
 550 }
 551
 552 // ----------------------------------------------------------------------------
 553 // set/get the controls text
 554 // ----------------------------------------------------------------------------
 555
 556 wxString wxTextCtrl::GetValue() const
 557 {
 558     // range 0..-1 is special for GetRange() and means to retrieve all text
 559     return GetRange(0, -1);
 560 }
 561
 562 wxString wxTextCtrl::GetRange(long from, long to) const
 563 {
 564     wxString str;
 565
 566     if ( from >= to && to != -1 )
 567     {
 568         // nothing to retrieve
 569         return str;
 570     }
 571
 572 #if wxUSE_RICHEDIT
 573     if ( IsRich() )
 574     {
 575         int len = GetWindowTextLength(GetHwnd());
 576         if ( len > from )
 577         {
 578             if ( to == -1 )
 579                 to = len;
 580
 581 #if !wxUSE_UNICODE
 582             // we must use EM_STREAMOUT if we don't want to lose all characters
 583             // not representable in the current character set (EM_GETTEXTRANGE
 584             // simply replaces them with question marks...)
 585             if ( GetRichVersion() > 1 )
 586             {
 587                 // we must have some encoding, otherwise any 8bit chars in the
 588                 // control are simply *lost* (replaced by '?')
 589                 wxFontEncoding encoding = wxFONTENCODING_SYSTEM;
 590
 591                 wxFont font = m_defaultStyle.GetFont();
 592                 if ( !font.Ok() )
 593                     font = GetFont();
 594
 595                 if ( font.Ok() )
 596                 {
 597                    encoding = font.GetEncoding();
 598                 }
 599
 600                 if ( encoding == wxFONTENCODING_SYSTEM )
 601                 {
 602                     encoding = wxLocale::GetSystemEncoding();
 603                 }
 604
 605                 if ( encoding == wxFONTENCODING_SYSTEM )
 606                 {
 607                     encoding = wxFONTENCODING_ISO8859_1;
 608                 }
 609
 610                 str = StreamOut(encoding);
 611
 612                 if ( !str.empty() )
 613                 {
 614                     // we have to manually extract the required part, luckily
 615                     // this is easy in this case as EOL characters in str are
 616                     // just LFs because we remove CRs in wxRichEditStreamOut
 617                     str = str.Mid(from, to - from);
 618                 }
 619             }
 620
 621             // StreamOut() wasn't used or failed, try to do it in normal way
 622             if ( str.empty() )
 623 #endif // !wxUSE_UNICODE
 624             {
 625                 // alloc one extra WORD as needed by the control
 626                 wxStringBuffer tmp(str, ++len);
 627                 wxChar *p = tmp;
 628
 629                 TEXTRANGE textRange;
 630                 textRange.chrg.cpMin = from;
 631                 textRange.chrg.cpMax = to;
 632                 textRange.lpstrText = p;
 633
 634                 (void)::SendMessage(GetHwnd(), EM_GETTEXTRANGE,
 635                                     0, (LPARAM)&textRange);
 636
 637                 if ( m_verRichEdit > 1 )
 638                 {
 639                     // RichEdit 2.0 uses just CR ('\r') for the
 640                     // newlines which is neither Unix nor Windows
 641                     // style - convert it to something reasonable
 642                     for ( ; *p; p++ )
 643                     {
 644                         if ( *p == _T('\r') )
 645                             *p = _T('\n');
 646                     }
 647                 }
 648             }
 649
 650             if ( m_verRichEdit == 1 )
 651             {
 652                 // convert to the canonical form - see comment below
 653                 str = wxTextFile::Translate(str, wxTextFileType_Unix);
 654             }
 655         }
 656         //else: no text at all, leave the string empty
 657     }
 658     else
 659 #endif // wxUSE_RICHEDIT
 660     {
 661         // retrieve all text
 662         str = wxGetWindowText(GetHWND());
 663
 664         // need only a range?
 665         if ( from < to )
 666         {
 667             str = str.Mid(from, to - from);
 668         }
 669
 670         // WM_GETTEXT uses standard DOS CR+LF (\r\n) convention - convert to the
 671         // canonical one (same one as above) for consistency with the other kinds
 672         // of controls and, more importantly, with the other ports
 673         str = wxTextFile::Translate(str, wxTextFileType_Unix);
 674     }
 675
 676     return str;
 677 }
 678
 679 void wxTextCtrl::SetValue(const wxString& value)
 680 {
 681     // if the text is long enough, it's faster to just set it instead of first
 682     // comparing it with the old one (chances are that it will be different
 683     // anyhow, this comparison is there to avoid flicker for small single-line
 684     // edit controls mostly)
 685     if ( (value.length() > 0x400) || (value != GetValue()) )
 686     {
 687         DoWriteText(value, false /* not selection only */);
 688
 689         // for compatibility, don't move the cursor when doing SetValue()
 690         SetInsertionPoint(0);
 691     }
 692     else // same text
 693     {
 694         // still send an event for consistency
 695         SendUpdateEvent();
 696     }
 697
 698     // we should reset the modified flag even if the value didn't really change
 699
 700     // mark the control as being not dirty - we changed its text, not the
 701     // user
 702     DiscardEdits();
 703 }
 704
 705 #if wxUSE_RICHEDIT && (!wxUSE_UNICODE || wxUSE_UNICODE_MSLU)
 706
 707 // TODO: using memcpy() would improve performance a lot for big amounts of text
 708
 709 DWORD CALLBACK
 710 wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb)
 711 {
 712     *pcb = 0;
 713
 714     const wchar_t ** const ppws = (const wchar_t **)dwCookie;
 715
 716     wchar_t *wbuf = (wchar_t *)buf;
 717     const wchar_t *wpc = *ppws;
 718     while ( cb && *wpc )
 719     {
 720         *wbuf++ = *wpc++;
 721
 722         cb -= sizeof(wchar_t);
 723         (*pcb) += sizeof(wchar_t);
 724     }
 725
 726     *ppws = wpc;
 727
 728     return 0;
 729 }
 730
 731 // helper struct used to pass parameters from wxTextCtrl to wxRichEditStreamOut
 732 struct wxStreamOutData
 733 {
 734     wchar_t *wpc;
 735     size_t len;
 736 };
 737
 738 DWORD CALLBACK
 739 wxRichEditStreamOut(DWORD_PTR dwCookie, BYTE *buf, LONG cb, LONG *pcb)
 740 {
 741     *pcb = 0;
 742
 743     wxStreamOutData *data = (wxStreamOutData *)dwCookie;
 744
 745     const wchar_t *wbuf = (const wchar_t *)buf;
 746     wchar_t *wpc = data->wpc;
 747     while ( cb )
 748     {
 749         wchar_t wch = *wbuf++;
 750
 751         // turn "\r\n" into "\n" on the fly
 752         if ( wch != L'\r' )
 753             *wpc++ = wch;
 754         else
 755             data->len--;
 756
 757         cb -= sizeof(wchar_t);
 758         (*pcb) += sizeof(wchar_t);
 759     }
 760
 761     data->wpc = wpc;
 762
 763     return 0;
 764 }
 765
 766
 767 #if wxUSE_UNICODE_MSLU
 768     #define UNUSED_IF_MSLU(param)
 769 #else
 770     #define UNUSED_IF_MSLU(param) param
 771 #endif
 772
 773 bool
 774 wxTextCtrl::StreamIn(const wxString& value,
 775                      wxFontEncoding UNUSED_IF_MSLU(encoding),
 776                      bool selectionOnly)
 777 {
 778 #if wxUSE_UNICODE_MSLU
 779     const wchar_t *wpc = value.c_str();
 780 #else // !wxUSE_UNICODE_MSLU
 781     wxCSConv conv(encoding);
 782
 783     const size_t len = conv.MB2WC(NULL, value, value.length());
 784
 785 #if wxUSE_WCHAR_T
 786     wxWCharBuffer wchBuf(len);
 787     wchar_t *wpc = wchBuf.data();
 788 #else
 789     wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
 790     wchar_t *wpc = wchBuf;
 791 #endif
 792
 793     conv.MB2WC(wpc, value, value.length());
 794 #endif // wxUSE_UNICODE_MSLU
 795
 796     // finally, stream it in the control
 797     EDITSTREAM eds;
 798     wxZeroMemory(eds);
 799     eds.dwCookie = (DWORD)&wpc;
 800     // the cast below is needed for broken (very) old mingw32 headers
 801     eds.pfnCallback = (EDITSTREAMCALLBACK)wxRichEditStreamIn;
 802
 803     // same problem as in DoWriteText(): we can get multiple events here
 804     UpdatesCountFilter ucf(m_updatesCount);
 805
 806     ::SendMessage(GetHwnd(), EM_STREAMIN,
 807                   SF_TEXT |
 808                   SF_UNICODE |
 809                   (selectionOnly ? SFF_SELECTION : 0),
 810                   (LPARAM)&eds);
 811
 812     // It's okay for EN_UPDATE to not be sent if the selection is empty and
 813     // the text is empty, otherwise warn the programmer about it.
 814     wxASSERT_MSG( ucf.GotUpdate() || ( !HasSelection() && value.empty() ),
 815                   _T("EM_STREAMIN didn't send EN_UPDATE?") );
 816
 817     if ( eds.dwError )
 818     {
 819         wxLogLastError(_T("EM_STREAMIN"));
 820     }
 821
 822 #if !wxUSE_WCHAR_T
 823     free(wchBuf);
 824 #endif // !wxUSE_WCHAR_T
 825
 826     return true;
 827 }
 828
 829 #if !wxUSE_UNICODE_MSLU
 830
 831 wxString
 832 wxTextCtrl::StreamOut(wxFontEncoding encoding, bool selectionOnly) const
 833 {
 834     wxString out;
 835
 836     const int len = GetWindowTextLength(GetHwnd());
 837
 838 #if wxUSE_WCHAR_T
 839     wxWCharBuffer wchBuf(len);
 840     wchar_t *wpc = wchBuf.data();
 841 #else
 842     wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
 843     wchar_t *wpc = wchBuf;
 844 #endif
 845
 846     wxStreamOutData data;
 847     data.wpc = wpc;
 848     data.len = len;
 849
 850     EDITSTREAM eds;
 851     wxZeroMemory(eds);
 852     eds.dwCookie = (DWORD)&data;
 853     eds.pfnCallback = wxRichEditStreamOut;
 854
 855     ::SendMessage
 856       (
 857         GetHwnd(),
 858         EM_STREAMOUT,
 859         SF_TEXT | SF_UNICODE | (selectionOnly ? SFF_SELECTION : 0),
 860         (LPARAM)&eds
 861       );
 862
 863     if ( eds.dwError )
 864     {
 865         wxLogLastError(_T("EM_STREAMOUT"));
 866     }
 867     else // streamed out ok
 868     {
 869         // NUL-terminate the string because its length could have been
 870         // decreased by wxRichEditStreamOut
 871         *(wchBuf.data() + data.len) = L'\0';
 872
 873         // now convert to the given encoding (this is a possibly lossful
 874         // conversion but what else can we do)
 875         wxCSConv conv(encoding);
 876         size_t lenNeeded = conv.WC2MB(NULL, wchBuf, 0);
 877         if ( lenNeeded++ )
 878         {
 879             conv.WC2MB(wxStringBuffer(out, lenNeeded), wchBuf, lenNeeded);
 880         }
 881     }
 882
 883 #if !wxUSE_WCHAR_T
 884     free(wchBuf);
 885 #endif // !wxUSE_WCHAR_T
 886
 887     return out;
 888 }
 889
 890 #endif // !wxUSE_UNICODE_MSLU
 891
 892 #endif // wxUSE_RICHEDIT
 893
 894 void wxTextCtrl::WriteText(const wxString& value)
 895 {
 896     DoWriteText(value);
 897 }
 898
 899 void wxTextCtrl::DoWriteText(const wxString& value, bool selectionOnly)
 900 {
 901     wxString valueDos;
 902     if ( m_windowStyle & wxTE_MULTILINE )
 903         valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
 904     else
 905         valueDos = value;
 906
 907 #if wxUSE_RICHEDIT
 908     // there are several complications with the rich edit controls here
 909     bool done = false;
 910     if ( IsRich() )
 911     {
 912         // first, ensure that the new text will be in the default style
 913         if ( !m_defaultStyle.IsDefault() )
 914         {
 915             long start, end;
 916             GetSelection(&start, &end);
 917             SetStyle(start, end, m_defaultStyle);
 918         }
 919
 920 #if wxUSE_UNICODE_MSLU
 921         // RichEdit doesn't have Unicode version of EM_REPLACESEL on Win9x,
 922         // but EM_STREAMIN works
 923         if ( wxUsingUnicowsDll() && GetRichVersion() > 1 )
 924         {
 925            done = StreamIn(valueDos, wxFONTENCODING_SYSTEM, selectionOnly);
 926         }
 927 #endif // wxUSE_UNICODE_MSLU
 928
 929 #if !wxUSE_UNICODE
 930         // next check if the text we're inserting must be shown in a non
 931         // default charset -- this only works for RichEdit > 1.0
 932         if ( GetRichVersion() > 1 )
 933         {
 934             wxFont font = m_defaultStyle.GetFont();
 935             if ( !font.Ok() )
 936                 font = GetFont();
 937
 938             if ( font.Ok() )
 939             {
 940                wxFontEncoding encoding = font.GetEncoding();
 941                if ( encoding != wxFONTENCODING_SYSTEM )
 942                {
 943                    // we have to use EM_STREAMIN to force richedit control 2.0+
 944                    // to show any text in the non default charset -- otherwise
 945                    // it thinks it knows better than we do and always shows it
 946                    // in the default one
 947                    done = StreamIn(valueDos, encoding, selectionOnly);
 948                }
 949             }
 950         }
 951 #endif // !wxUSE_UNICODE
 952     }
 953
 954     if ( !done )
 955 #endif // wxUSE_RICHEDIT
 956     {
 957         // in some cases we get 2 EN_CHANGE notifications after the SendMessage
 958         // call (this happens for plain EDITs with EM_REPLACESEL and under some
 959         // -- undetermined -- conditions with rich edit) and sometimes we don't
 960         // get any events at all (plain EDIT with WM_SETTEXT), so ensure that
 961         // we generate exactly one of them by ignoring all but the first one in
 962         // SendUpdateEvent() and generating one ourselves if we hadn't got any
 963         // notifications from Windows
 964         UpdatesCountFilter ucf(m_updatesCount);
 965
 966         ::SendMessage(GetHwnd(), selectionOnly ? EM_REPLACESEL : WM_SETTEXT,
 967                       // EM_REPLACESEL takes 1 to indicate the operation should be redoable
 968                       selectionOnly ? 1 : 0, (LPARAM)valueDos.c_str());
 969
 970         if ( !ucf.GotUpdate() )
 971         {
 972             SendUpdateEvent();
 973         }
 974     }
 975 }
 976
 977 void wxTextCtrl::AppendText(const wxString& text)
 978 {
 979     SetInsertionPointEnd();
 980
 981     WriteText(text);
 982
 983 #if wxUSE_RICHEDIT
 984     // don't do this if we're frozen, saves some time
 985     if ( !IsFrozen() && IsMultiLine() && GetRichVersion() > 1 )
 986     {
 987         // setting the caret to the end and showing it simply doesn't work for
 988         // RichEdit 2.0 -- force it to still do what we want
 989         ::SendMessage(GetHwnd(), EM_LINESCROLL, 0, GetNumberOfLines());
 990     }
 991 #endif // wxUSE_RICHEDIT
 992 }
 993
 994 void wxTextCtrl::Clear()
 995 {
 996     ::SetWindowText(GetHwnd(), wxEmptyString);
 997
 998 #if wxUSE_RICHEDIT
 999     if ( !IsRich() )
1000 #endif // wxUSE_RICHEDIT
1001     {
1002         // rich edit controls send EN_UPDATE from WM_SETTEXT handler themselves
1003         // but the normal ones don't -- make Clear() behaviour consistent by
1004         // always sending this event
1005
1006         // Windows already sends an update event for single-line
1007         // controls.
1008         if ( m_windowStyle & wxTE_MULTILINE )
1009             SendUpdateEvent();
1010     }
1011 }
1012
1013 #ifdef __WIN32__
1014
1015 bool wxTextCtrl::EmulateKeyPress(const wxKeyEvent& event)
1016 {
1017     SetFocus();
1018
1019     size_t lenOld = GetValue().length();
1020
1021     wxUint32 code = event.GetRawKeyCode();
1022     ::keybd_event((BYTE)code, 0, 0 /* key press */, 0);
1023     ::keybd_event((BYTE)code, 0, KEYEVENTF_KEYUP, 0);
1024
1025     // assume that any alphanumeric key changes the total number of characters
1026     // in the control - this should work in 99% of cases
1027     return GetValue().length() != lenOld;
1028 }
1029
1030 #endif // __WIN32__
1031
1032 // ----------------------------------------------------------------------------
1033 // Clipboard operations
1034 // ----------------------------------------------------------------------------
1035
1036 void wxTextCtrl::Copy()
1037 {
1038     if (CanCopy())
1039     {
1040         ::SendMessage(GetHwnd(), WM_COPY, 0, 0L);
1041     }
1042 }
1043
1044 void wxTextCtrl::Cut()
1045 {
1046     if (CanCut())
1047     {
1048         ::SendMessage(GetHwnd(), WM_CUT, 0, 0L);
1049     }
1050 }
1051
1052 void wxTextCtrl::Paste()
1053 {
1054     if (CanPaste())
1055     {
1056         ::SendMessage(GetHwnd(), WM_PASTE, 0, 0L);
1057     }
1058 }
1059
1060 bool wxTextCtrl::HasSelection() const
1061 {
1062     long from, to;
1063     GetSelection(&from, &to);
1064     return from != to;
1065 }
1066
1067 bool wxTextCtrl::CanCopy() const
1068 {
1069     // Can copy if there's a selection
1070     return HasSelection();
1071 }
1072
1073 bool wxTextCtrl::CanCut() const
1074 {
1075     return CanCopy() && IsEditable();
1076 }
1077
1078 bool wxTextCtrl::CanPaste() const
1079 {
1080     if ( !IsEditable() )
1081         return false;
1082
1083 #if wxUSE_RICHEDIT
1084     if ( IsRich() )
1085     {
1086         UINT cf = 0; // 0 == any format
1087
1088         return ::SendMessage(GetHwnd(), EM_CANPASTE, cf, 0) != 0;
1089     }
1090 #endif // wxUSE_RICHEDIT
1091
1092     // Standard edit control: check for straight text on clipboard
1093     if ( !::OpenClipboard(GetHwndOf(wxTheApp->GetTopWindow())) )
1094         return false;
1095
1096     bool isTextAvailable = ::IsClipboardFormatAvailable(CF_TEXT) != 0;
1097     ::CloseClipboard();
1098
1099     return isTextAvailable;
1100 }
1101
1102 // ----------------------------------------------------------------------------
1103 // Accessors
1104 // ----------------------------------------------------------------------------
1105
1106 void wxTextCtrl::SetEditable(bool editable)
1107 {
1108     HWND hWnd = GetHwnd();
1109     ::SendMessage(hWnd, EM_SETREADONLY, (WPARAM)!editable, (LPARAM)0L);
1110 }
1111
1112 void wxTextCtrl::SetInsertionPoint(long pos)
1113 {
1114     DoSetSelection(pos, pos);
1115 }
1116
1117 void wxTextCtrl::SetInsertionPointEnd()
1118 {
1119     // we must not do anything if the caret is already there because calling
1120     // SetInsertionPoint() thaws the controls if Freeze() had been called even
1121     // if it doesn't actually move the caret anywhere and so the simple fact of
1122     // doing it results in horrible flicker when appending big amounts of text
1123     // to the control in a few chunks (see DoAddText() test in the text sample)
1124     if ( GetInsertionPoint() == GetLastPosition() )
1125     {
1126         return;
1127     }
1128
1129     long pos;
1130
1131 #if wxUSE_RICHEDIT
1132     if ( m_verRichEdit == 1 )
1133     {
1134         // we don't have to waste time calling GetLastPosition() in this case
1135         pos = -1;
1136     }
1137     else // !RichEdit 1.0
1138 #endif // wxUSE_RICHEDIT
1139     {
1140         pos = GetLastPosition();
1141     }
1142
1143     SetInsertionPoint(pos);
1144 }
1145
1146 long wxTextCtrl::GetInsertionPoint() const
1147 {
1148 #if wxUSE_RICHEDIT
1149     if ( IsRich() )
1150     {
1151         CHARRANGE range;
1152         range.cpMin = 0;
1153         range.cpMax = 0;
1154         ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
1155         return range.cpMin;
1156     }
1157 #endif // wxUSE_RICHEDIT
1158
1159     DWORD Pos = (DWORD)::SendMessage(GetHwnd(), EM_GETSEL, 0, 0L);
1160     return Pos & 0xFFFF;
1161 }
1162
1163 wxTextPos wxTextCtrl::GetLastPosition() const
1164 {
1165     int numLines = GetNumberOfLines();
1166     long posStartLastLine = XYToPosition(0, numLines - 1);
1167
1168     long lenLastLine = GetLengthOfLineContainingPos(posStartLastLine);
1169
1170     return posStartLastLine + lenLastLine;
1171 }
1172
1173 // If the return values from and to are the same, there is no
1174 // selection.
1175 void wxTextCtrl::GetSelection(long* from, long* to) const
1176 {
1177 #if wxUSE_RICHEDIT
1178     if ( IsRich() )
1179     {
1180         CHARRANGE charRange;
1181         ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &charRange);
1182
1183         *from = charRange.cpMin;
1184         *to = charRange.cpMax;
1185     }
1186     else
1187 #endif // !wxUSE_RICHEDIT
1188     {
1189         DWORD dwStart, dwEnd;
1190         ::SendMessage(GetHwnd(), EM_GETSEL, (WPARAM)&dwStart, (LPARAM)&dwEnd);
1191
1192         *from = dwStart;
1193         *to = dwEnd;
1194     }
1195 }
1196
1197 bool wxTextCtrl::IsEditable() const
1198 {
1199     // strangely enough, we may be called before the control is created: our
1200     // own Create() calls MSWGetStyle() which calls AcceptsFocus() which calls
1201     // us
1202     if ( !m_hWnd )
1203         return true;
1204
1205     long style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1206
1207     return (style & ES_READONLY) == 0;
1208 }
1209
1210 // ----------------------------------------------------------------------------
1211 // selection
1212 // ----------------------------------------------------------------------------
1213
1214 void wxTextCtrl::SetSelection(long from, long to)
1215 {
1216     // if from and to are both -1, it means (in wxWidgets) that all text should
1217     // be selected - translate into Windows convention
1218     if ( (from == -1) && (to == -1) )
1219     {
1220         from = 0;
1221         to = -1;
1222     }
1223
1224     DoSetSelection(from, to);
1225 }
1226
1227 void wxTextCtrl::DoSetSelection(long from, long to, bool scrollCaret)
1228 {
1229     HWND hWnd = GetHwnd();
1230
1231 #if wxUSE_RICHEDIT
1232     if ( IsRich() )
1233     {
1234         CHARRANGE range;
1235         range.cpMin = from;
1236         range.cpMax = to;
1237         ::SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM) &range);
1238     }
1239     else
1240 #endif // wxUSE_RICHEDIT
1241     {
1242         ::SendMessage(hWnd, EM_SETSEL, (WPARAM)from, (LPARAM)to);
1243     }
1244
1245     if ( scrollCaret && !IsFrozen() )
1246     {
1247 #if wxUSE_RICHEDIT
1248         // richedit 3.0 (i.e. the version living in riched20.dll distributed
1249         // with Windows 2000 and beyond) doesn't honour EM_SCROLLCARET when
1250         // emulating richedit 2.0 unless the control has focus or ECO_NOHIDESEL
1251         // option is set (but it does work ok in richedit 1.0 mode...)
1252         //
1253         // so to make it work we either need to give focus to it here which
1254         // will probably create many problems (dummy focus events; window
1255         // containing the text control being brought to foreground
1256         // unexpectedly; ...) or to temporarily set ECO_NOHIDESEL which may
1257         // create other problems too -- and in fact it does because if we turn
1258         // on/off this style while appending the text to the control, the
1259         // vertical scrollbar never appears in it even if we append tons of
1260         // text and to work around this the only solution I found was to use
1261         // ES_DISABLENOSCROLL
1262         //
1263         // this is very ugly but I don't see any other way to make this work
1264         long style = 0;
1265         if ( GetRichVersion() > 1 )
1266         {
1267             if ( !HasFlag(wxTE_NOHIDESEL) )
1268             {
1269                 // setting ECO_NOHIDESEL also sets WS_VISIBLE and possibly
1270                 // others, remember the style so we can reset it later if needed
1271                 style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1272                 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1273                               ECOOP_OR, ECO_NOHIDESEL);
1274             }
1275             //else: everything is already ok
1276         }
1277 #endif // wxUSE_RICHEDIT
1278
1279         ::SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
1280
1281 #if wxUSE_RICHEDIT
1282         // restore ECO_NOHIDESEL if we changed it
1283         if ( GetRichVersion() > 1 && !HasFlag(wxTE_NOHIDESEL) )
1284         {
1285             ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1286                           ECOOP_AND, ~ECO_NOHIDESEL);
1287             if ( style != ::GetWindowLong(GetHwnd(), GWL_STYLE) )
1288                 ::SetWindowLong(GetHwnd(), GWL_STYLE, style);
1289         }
1290 #endif // wxUSE_RICHEDIT
1291     }
1292 }
1293
1294 // ----------------------------------------------------------------------------
1295 // Working with files
1296 // ----------------------------------------------------------------------------
1297
1298 bool wxTextCtrl::LoadFile(const wxString& file)
1299 {
1300     if ( wxTextCtrlBase::LoadFile(file) )
1301     {
1302         // update the size limit if needed
1303         AdjustSpaceLimit();
1304
1305         return true;
1306     }
1307
1308     return false;
1309 }
1310
1311 // ----------------------------------------------------------------------------
1312 // Editing
1313 // ----------------------------------------------------------------------------
1314
1315 void wxTextCtrl::Replace(long from, long to, const wxString& value)
1316 {
1317     // Set selection and remove it
1318     DoSetSelection(from, to, false /* don't scroll caret into view */);
1319
1320     DoWriteText(value, true /* selection only */);
1321 }
1322
1323 void wxTextCtrl::Remove(long from, long to)
1324 {
1325     Replace(from, to, wxEmptyString);
1326 }
1327
1328 bool wxTextCtrl::IsModified() const
1329 {
1330     return ::SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0;
1331 }
1332
1333 void wxTextCtrl::MarkDirty()
1334 {
1335     ::SendMessage(GetHwnd(), EM_SETMODIFY, TRUE, 0L);
1336 }
1337
1338 void wxTextCtrl::DiscardEdits()
1339 {
1340     ::SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0L);
1341 }
1342
1343 int wxTextCtrl::GetNumberOfLines() const
1344 {
1345     return (int)::SendMessage(GetHwnd(), EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0);
1346 }
1347
1348 // ----------------------------------------------------------------------------
1349 // Positions <-> coords
1350 // ----------------------------------------------------------------------------
1351
1352 long wxTextCtrl::XYToPosition(long x, long y) const
1353 {
1354     // This gets the char index for the _beginning_ of this line
1355     long charIndex = ::SendMessage(GetHwnd(), EM_LINEINDEX, (WPARAM)y, (LPARAM)0);
1356
1357     return charIndex + x;
1358 }
1359
1360 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
1361 {
1362     HWND hWnd = GetHwnd();
1363
1364     // This gets the line number containing the character
1365     long lineNo;
1366 #if wxUSE_RICHEDIT
1367     if ( IsRich() )
1368     {
1369         lineNo = ::SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, (LPARAM)pos);
1370     }
1371     else
1372 #endif // wxUSE_RICHEDIT
1373     {
1374         lineNo = ::SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, 0);
1375     }
1376
1377     if ( lineNo == -1 )
1378     {
1379         // no such line
1380         return false;
1381     }
1382
1383     // This gets the char index for the _beginning_ of this line
1384     long charIndex = ::SendMessage(hWnd, EM_LINEINDEX, (WPARAM)lineNo, (LPARAM)0);
1385     if ( charIndex == -1 )
1386     {
1387         return false;
1388     }
1389
1390     // The X position must therefore be the different between pos and charIndex
1391     if ( x )
1392         *x = pos - charIndex;
1393     if ( y )
1394         *y = lineNo;
1395
1396     return true;
1397 }
1398
1399 wxTextCtrlHitTestResult
1400 wxTextCtrl::HitTest(const wxPoint& pt, long *posOut) const
1401 {
1402     // first get the position from Windows
1403     LPARAM lParam;
1404
1405 #if wxUSE_RICHEDIT
1406     POINTL ptl;
1407     if ( IsRich() )
1408     {
1409         // for rich edit controls the position is passed iva the struct fields
1410         ptl.x = pt.x;
1411         ptl.y = pt.y;
1412         lParam = (LPARAM)&ptl;
1413     }
1414     else
1415 #endif // wxUSE_RICHEDIT
1416     {
1417         // for the plain ones, we are limited to 16 bit positions which are
1418         // combined in a single 32 bit value
1419         lParam = MAKELPARAM(pt.x, pt.y);
1420     }
1421
1422     LRESULT pos = ::SendMessage(GetHwnd(), EM_CHARFROMPOS, 0, lParam);
1423
1424     if ( pos == -1 )
1425     {
1426         // this seems to indicate an error...
1427         return wxTE_HT_UNKNOWN;
1428     }
1429
1430 #if wxUSE_RICHEDIT
1431     if ( !IsRich() )
1432 #endif // wxUSE_RICHEDIT
1433     {
1434         // for plain EDIT controls the higher word contains something else
1435         pos = LOWORD(pos);
1436     }
1437
1438
1439     // next determine where it is relatively to our point: EM_CHARFROMPOS
1440     // always returns the closest character but we need to be more precise, so
1441     // double check that we really are where it pretends
1442     POINTL ptReal;
1443
1444 #if wxUSE_RICHEDIT
1445     // FIXME: we need to distinguish between richedit 2 and 3 here somehow but
1446     //        we don't know how to do it
1447     if ( IsRich() )
1448     {
1449         ::SendMessage(GetHwnd(), EM_POSFROMCHAR, (WPARAM)&ptReal, pos);
1450     }
1451     else
1452 #endif // wxUSE_RICHEDIT
1453     {
1454         LRESULT lRc = ::SendMessage(GetHwnd(), EM_POSFROMCHAR, pos, 0);
1455
1456         if ( lRc == -1 )
1457         {
1458             // this is apparently returned when pos corresponds to the last
1459             // position
1460             ptReal.x =
1461             ptReal.y = 0;
1462         }
1463         else
1464         {
1465             ptReal.x = LOWORD(lRc);
1466             ptReal.y = HIWORD(lRc);
1467         }
1468     }
1469
1470     wxTextCtrlHitTestResult rc;
1471
1472     if ( pt.y > ptReal.y + GetCharHeight() )
1473         rc = wxTE_HT_BELOW;
1474     else if ( pt.x > ptReal.x + GetCharWidth() )
1475         rc = wxTE_HT_BEYOND;
1476     else
1477         rc = wxTE_HT_ON_TEXT;
1478
1479     if ( posOut )
1480         *posOut = pos;
1481
1482     return rc;
1483 }
1484
1485 // ----------------------------------------------------------------------------
1486 //
1487 // ----------------------------------------------------------------------------
1488
1489 void wxTextCtrl::ShowPosition(long pos)
1490 {
1491     HWND hWnd = GetHwnd();
1492
1493     // To scroll to a position, we pass the number of lines and characters
1494     // to scroll *by*. This means that we need to:
1495     // (1) Find the line position of the current line.
1496     // (2) Find the line position of pos.
1497     // (3) Scroll by (pos - current).
1498     // For now, ignore the horizontal scrolling.
1499
1500     // Is this where scrolling is relative to - the line containing the caret?
1501     // Or is the first visible line??? Try first visible line.
1502 //    int currentLineLineNo1 = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)-1, (LPARAM)0L);
1503
1504     int currentLineLineNo = (int)::SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, (WPARAM)0, (LPARAM)0L);
1505
1506     int specifiedLineLineNo = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, (LPARAM)0L);
1507
1508     int linesToScroll = specifiedLineLineNo - currentLineLineNo;
1509
1510     if (linesToScroll != 0)
1511       (void)::SendMessage(hWnd, EM_LINESCROLL, (WPARAM)0, (LPARAM)linesToScroll);
1512 }
1513
1514 long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const
1515 {
1516     return ::SendMessage(GetHwnd(), EM_LINELENGTH, (WPARAM)pos, 0);
1517 }
1518
1519 int wxTextCtrl::GetLineLength(long lineNo) const
1520 {
1521     long pos = XYToPosition(0, lineNo);
1522
1523     return GetLengthOfLineContainingPos(pos);
1524 }
1525
1526 wxString wxTextCtrl::GetLineText(long lineNo) const
1527 {
1528     size_t len = (size_t)GetLineLength(lineNo) + 1;
1529
1530     // there must be at least enough place for the length WORD in the
1531     // buffer
1532     len += sizeof(WORD);
1533
1534     wxString str;
1535     {
1536         wxStringBufferLength tmp(str, len);
1537         wxChar *buf = tmp;
1538
1539         *(WORD *)buf = (WORD)len;
1540         len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf);
1541
1542 #if wxUSE_RICHEDIT
1543         if ( IsRich() )
1544         {
1545             // remove the '\r' returned by the rich edit control, the user code
1546             // should never see it
1547             if ( buf[len - 2] == _T('\r') && buf[len - 1] == _T('\n') )
1548             {
1549                 buf[len - 2] = _T('\n');
1550                 len--;
1551             }
1552         }
1553 #endif // wxUSE_RICHEDIT
1554
1555         // remove the '\n' at the end, if any (this is how this function is
1556         // supposed to work according to the docs)
1557         if ( buf[len - 1] == _T('\n') )
1558         {
1559             len--;
1560         }
1561
1562         buf[len] = 0;
1563         tmp.SetLength(len);
1564     }
1565
1566     return str;
1567 }
1568
1569 void wxTextCtrl::SetMaxLength(unsigned long len)
1570 {
1571 #if wxUSE_RICHEDIT
1572     if ( IsRich() )
1573     {
1574         ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, len ? len : 0x7fffffff);
1575     }
1576     else
1577 #endif // wxUSE_RICHEDIT
1578     {
1579         if ( len >= 0xffff )
1580         {
1581             // this will set it to a platform-dependent maximum (much more
1582             // than 64Kb under NT)
1583             len = 0;
1584         }
1585
1586         ::SendMessage(GetHwnd(), EM_LIMITTEXT, len, 0);
1587     }
1588 }
1589
1590 // ----------------------------------------------------------------------------
1591 // Undo/redo
1592 // ----------------------------------------------------------------------------
1593
1594 void wxTextCtrl::Undo()
1595 {
1596     if (CanUndo())
1597     {
1598         ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1599     }
1600 }
1601
1602 void wxTextCtrl::Redo()
1603 {
1604     if (CanRedo())
1605     {
1606 #if wxUSE_RICHEDIT
1607         if (GetRichVersion() > 1)
1608             ::SendMessage(GetHwnd(), EM_REDO, 0, 0);
1609         else
1610 #endif
1611         // Same as Undo, since Undo undoes the undo, i.e. a redo.
1612         ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1613     }
1614 }
1615
1616 bool wxTextCtrl::CanUndo() const
1617 {
1618     return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1619 }
1620
1621 bool wxTextCtrl::CanRedo() const
1622 {
1623 #if wxUSE_RICHEDIT
1624     if (GetRichVersion() > 1)
1625         return ::SendMessage(GetHwnd(), EM_CANREDO, 0, 0) != 0;
1626     else
1627 #endif
1628     return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1629 }
1630
1631 // ----------------------------------------------------------------------------
1632 // caret handling (Windows only)
1633 // ----------------------------------------------------------------------------
1634
1635 bool wxTextCtrl::ShowNativeCaret(bool show)
1636 {
1637     if ( show != m_isNativeCaretShown )
1638     {
1639         if ( !(show ? ::ShowCaret(GetHwnd()) : ::HideCaret(GetHwnd())) )
1640         {
1641             // not an error, may simply indicate that it's not shown/hidden
1642             // yet (i.e. it had been hidden/showh 2 times before)
1643             return false;
1644         }
1645
1646         m_isNativeCaretShown = show;
1647     }
1648
1649     return true;
1650 }
1651
1652 // ----------------------------------------------------------------------------
1653 // implemenation details
1654 // ----------------------------------------------------------------------------
1655
1656 void wxTextCtrl::Command(wxCommandEvent & event)
1657 {
1658     SetValue(event.GetString());
1659     ProcessCommand (event);
1660 }
1661
1662 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
1663 {
1664     // By default, load the first file into the text window.
1665     if (event.GetNumberOfFiles() > 0)
1666     {
1667         LoadFile(event.GetFiles()[0]);
1668     }
1669 }
1670
1671 // ----------------------------------------------------------------------------
1672 // kbd input processing
1673 // ----------------------------------------------------------------------------
1674
1675 bool wxTextCtrl::MSWShouldPreProcessMessage(WXMSG* pMsg)
1676 {
1677     MSG *msg = (MSG *)pMsg;
1678
1679     // check for our special keys here: if we don't do it and the parent frame
1680     // uses them as accelerators, they wouldn't work at all, so we disable
1681     // usual preprocessing for them
1682     if ( msg->message == WM_KEYDOWN )
1683     {
1684         WORD vkey = (WORD) msg->wParam;
1685         if ( (HIWORD(msg->lParam) & KF_ALTDOWN) == KF_ALTDOWN )
1686         {
1687             if ( vkey == VK_BACK )
1688                 return false;
1689         }
1690         else // no Alt
1691         {
1692             // we want to process some Ctrl-foo and Shift-bar but no key
1693             // combinations without either Ctrl or Shift nor with both of them
1694             // pressed
1695             const int ctrl = wxIsCtrlDown(),
1696                       shift = wxIsShiftDown();
1697             switch ( ctrl + shift )
1698             {
1699                 default:
1700                     wxFAIL_MSG( _T("how many modifiers have we got?") );
1701                     // fall through
1702
1703                 case 0:
1704                 case 2:
1705                     break;
1706
1707                 case 1:
1708                     // either Ctrl or Shift pressed
1709                     if ( ctrl )
1710                     {
1711                         switch ( vkey )
1712                         {
1713                             case 'C':
1714                             case 'V':
1715                             case 'X':
1716                             case VK_INSERT:
1717                             case VK_DELETE:
1718                             case VK_HOME:
1719                             case VK_END:
1720                                 return false;
1721                         }
1722                     }
1723                     else // Shift is pressed
1724                     {
1725                         if ( vkey == VK_INSERT || vkey == VK_DELETE )
1726                             return false;
1727                     }
1728             }
1729         }
1730     }
1731
1732     return wxControl::MSWShouldPreProcessMessage(pMsg);
1733 }
1734
1735 void wxTextCtrl::OnChar(wxKeyEvent& event)
1736 {
1737     switch ( event.GetKeyCode() )
1738     {
1739         case WXK_RETURN:
1740             if ( !HasFlag(wxTE_MULTILINE) )
1741             {
1742                 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1743                 InitCommandEvent(event);
1744                 event.SetString(GetValue());
1745                 if ( GetEventHandler()->ProcessEvent(event) )
1746                     return;
1747             }
1748             //else: multiline controls need Enter for themselves
1749
1750             break;
1751
1752         case WXK_TAB:
1753             // ok, so this is getting absolutely ridiculous but I don't see
1754             // any other way to fix this bug: when a multiline text control is
1755             // inside a wxFrame, we need to generate the navigation event as
1756             // otherwise nothing happens at all, but when the same control is
1757             // created inside a dialog, IsDialogMessage() *does* switch focus
1758             // all by itself and so if we do it here as well, it is advanced
1759             // twice and goes to the next control... to prevent this from
1760             // happening we're doing this ugly check, the logic being that if
1761             // we don't have focus then it had been already changed to the next
1762             // control
1763             //
1764             // the right thing to do would, of course, be to understand what
1765             // the hell is IsDialogMessage() doing but this is beyond my feeble
1766             // forces at the moment unfortunately
1767             if ( !(m_windowStyle & wxTE_PROCESS_TAB))
1768             {
1769                 if ( FindFocus() == this )
1770                 {
1771                     int flags = 0;
1772                     if (!event.ShiftDown())
1773                         flags |= wxNavigationKeyEvent::IsForward ;
1774                     if (event.ControlDown())
1775                         flags |= wxNavigationKeyEvent::WinChange ;
1776                     if (Navigate(flags))
1777                         return;
1778                 }
1779             }
1780             else
1781             {
1782                 // Insert tab since calling the default Windows handler
1783                 // doesn't seem to do it
1784                 WriteText(wxT("\t"));
1785                 return;
1786             }
1787             break;
1788     }
1789
1790     // no, we didn't process it
1791     event.Skip();
1792 }
1793
1794 WXLRESULT wxTextCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
1795 {
1796     WXLRESULT lRc = wxTextCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
1797
1798     if ( nMsg == WM_GETDLGCODE )
1799     {
1800         // we always want the chars and the arrows: the arrows for navigation
1801         // and the chars because we want Ctrl-C to work even in a read only
1802         // control
1803         long lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
1804
1805         if ( IsEditable() )
1806         {
1807             // we may have several different cases:
1808             // 1. normal case: both TAB and ENTER are used for dlg navigation
1809             // 2. ctrl which wants TAB for itself: ENTER is used to pass to the
1810             //    next control in the dialog
1811             // 3. ctrl which wants ENTER for itself: TAB is used for dialog
1812             //    navigation
1813             // 4. ctrl which wants both TAB and ENTER: Ctrl-ENTER is used to go
1814             //    to the next control
1815
1816             // the multiline edit control should always get <Return> for itself
1817             if ( HasFlag(wxTE_PROCESS_ENTER) || HasFlag(wxTE_MULTILINE) )
1818                 lDlgCode |= DLGC_WANTMESSAGE;
1819
1820             if ( HasFlag(wxTE_PROCESS_TAB) )
1821                 lDlgCode |= DLGC_WANTTAB;
1822
1823             lRc |= lDlgCode;
1824         }
1825         else // !editable
1826         {
1827             // NB: use "=", not "|=" as the base class version returns the
1828             //     same flags is this state as usual (i.e. including
1829             //     DLGC_WANTMESSAGE). This is strange (how does it work in the
1830             //     native Win32 apps?) but for now live with it.
1831             lRc = lDlgCode;
1832         }
1833     }
1834
1835     return lRc;
1836 }
1837
1838 // ----------------------------------------------------------------------------
1839 // text control event processing
1840 // ----------------------------------------------------------------------------
1841
1842 bool wxTextCtrl::SendUpdateEvent()
1843 {
1844     switch ( m_updatesCount )
1845     {
1846         case 0:
1847             // remember that we've got an update
1848             m_updatesCount++;
1849             break;
1850
1851         case 1:
1852             // we had already sent one event since the last control modification
1853             return false;
1854
1855         default:
1856             wxFAIL_MSG( _T("unexpected wxTextCtrl::m_updatesCount value") );
1857             // fall through
1858
1859         case -1:
1860             // we hadn't updated the control ourselves, this event comes from
1861             // the user, don't need to ignore it nor update the count
1862             break;
1863     }
1864
1865     wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, GetId());
1866     InitCommandEvent(event);
1867
1868     return ProcessCommand(event);
1869 }
1870
1871 bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
1872 {
1873     switch ( param )
1874     {
1875         case EN_SETFOCUS:
1876         case EN_KILLFOCUS:
1877             {
1878                 wxFocusEvent event(param == EN_KILLFOCUS ? wxEVT_KILL_FOCUS
1879                                                          : wxEVT_SET_FOCUS,
1880                                    m_windowId);
1881                 event.SetEventObject(this);
1882                 GetEventHandler()->ProcessEvent(event);
1883             }
1884             break;
1885
1886         case EN_CHANGE:
1887             SendUpdateEvent();
1888             break;
1889
1890         case EN_MAXTEXT:
1891             // the text size limit has been hit -- try to increase it
1892             if ( !AdjustSpaceLimit() )
1893             {
1894                 wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, m_windowId);
1895                 InitCommandEvent(event);
1896                 event.SetString(GetValue());
1897                 ProcessCommand(event);
1898             }
1899             break;
1900
1901             // the other edit notification messages are not processed
1902         default:
1903             return false;
1904     }
1905
1906     // processed
1907     return true;
1908 }
1909
1910 WXHBRUSH wxTextCtrl::MSWControlColor(WXHDC hDC, WXHWND hWnd)
1911 {
1912     if ( !IsEnabled() && !HasFlag(wxTE_MULTILINE) )
1913         return MSWControlColorDisabled(hDC);
1914
1915     return wxTextCtrlBase::MSWControlColor(hDC, hWnd);
1916 }
1917
1918 bool wxTextCtrl::HasSpaceLimit(unsigned int *len) const
1919 {
1920     // HACK: we try to automatically extend the limit for the amount of text
1921     //       to allow (interactively) entering more than 64Kb of text under
1922     //       Win9x but we shouldn't reset the text limit which was previously
1923     //       set explicitly with SetMaxLength()
1924     //
1925     //       Unfortunately there is no EM_GETLIMITTEXTSETBYUSER and so we don't
1926     //       know the limit we set (if any). We could solve this by storing the
1927     //       limit we set in wxTextCtrl but to save space we prefer to simply
1928     //       test here the actual limit value: we consider that SetMaxLength()
1929     //       can only be called for small values while EN_MAXTEXT is only sent
1930     //       for large values (in practice the default limit seems to be 30000
1931     //       but make it smaller just to be on the safe side)
1932     *len = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
1933     return *len < 10001;
1934
1935 }
1936
1937 bool wxTextCtrl::AdjustSpaceLimit()
1938 {
1939     unsigned int limit;
1940     if ( HasSpaceLimit(&limit) )
1941         return false;
1942
1943     unsigned int len = ::GetWindowTextLength(GetHwnd());
1944     if ( len >= limit )
1945     {
1946         // increment in 32Kb chunks
1947         SetMaxLength(len + 0x8000);
1948     }
1949
1950     // we changed the limit
1951     return true;
1952 }
1953
1954 bool wxTextCtrl::AcceptsFocus() const
1955 {
1956     // we don't want focus if we can't be edited unless we're a multiline
1957     // control because then it might be still nice to get focus from keyboard
1958     // to be able to scroll it without mouse
1959     return (IsEditable() || IsMultiLine()) && wxControl::AcceptsFocus();
1960 }
1961
1962 wxSize wxTextCtrl::DoGetBestSize() const
1963 {
1964     int cx, cy;
1965     wxGetCharSize(GetHWND(), &cx, &cy, GetFont());
1966
1967     int wText = DEFAULT_ITEM_WIDTH;
1968
1969     int hText = cy;
1970     if ( m_windowStyle & wxTE_MULTILINE )
1971     {
1972         hText *= wxMax(wxMin(GetNumberOfLines(), 10), 2);
1973     }
1974     //else: for single line control everything is ok
1975
1976     // we have to add the adjustments for the control height only once, not
1977     // once per line, so do it after multiplication above
1978     hText += EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy) - cy;
1979
1980     return wxSize(wText, hText);
1981 }
1982
1983 // ----------------------------------------------------------------------------
1984 // standard handlers for standard edit menu events
1985 // ----------------------------------------------------------------------------
1986
1987 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1988 {
1989     Cut();
1990 }
1991
1992 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1993 {
1994     Copy();
1995 }
1996
1997 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1998 {
1999     Paste();
2000 }
2001
2002 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
2003 {
2004     Undo();
2005 }
2006
2007 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
2008 {
2009     Redo();
2010 }
2011
2012 void wxTextCtrl::OnDelete(wxCommandEvent& WXUNUSED(event))
2013 {
2014     long from, to;
2015     GetSelection(& from, & to);
2016     if (from != -1 && to != -1)
2017         Remove(from, to);
2018 }
2019
2020 void wxTextCtrl::OnSelectAll(wxCommandEvent& WXUNUSED(event))
2021 {
2022     SetSelection(-1, -1);
2023 }
2024
2025 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
2026 {
2027     event.Enable( CanCut() );
2028 }
2029
2030 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
2031 {
2032     event.Enable( CanCopy() );
2033 }
2034
2035 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
2036 {
2037     event.Enable( CanPaste() );
2038 }
2039
2040 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
2041 {
2042     event.Enable( CanUndo() );
2043 }
2044
2045 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
2046 {
2047     event.Enable( CanRedo() );
2048 }
2049
2050 void wxTextCtrl::OnUpdateDelete(wxUpdateUIEvent& event)
2051 {
2052     long from, to;
2053     GetSelection(& from, & to);
2054     event.Enable(from != -1 && to != -1 && from != to && IsEditable()) ;
2055 }
2056
2057 void wxTextCtrl::OnUpdateSelectAll(wxUpdateUIEvent& event)
2058 {
2059     event.Enable(GetLastPosition() > 0);
2060 }
2061
2062 void wxTextCtrl::OnContextMenu(wxContextMenuEvent& event)
2063 {
2064 #if wxUSE_RICHEDIT
2065     if (IsRich())
2066     {
2067         if (!m_privateContextMenu)
2068         {
2069             m_privateContextMenu = new wxMenu;
2070             m_privateContextMenu->Append(wxID_UNDO, _("&Undo"));
2071             m_privateContextMenu->Append(wxID_REDO, _("&Redo"));
2072             m_privateContextMenu->AppendSeparator();
2073             m_privateContextMenu->Append(wxID_CUT, _("Cu&t"));
2074             m_privateContextMenu->Append(wxID_COPY, _("&Copy"));
2075             m_privateContextMenu->Append(wxID_PASTE, _("&Paste"));
2076             m_privateContextMenu->Append(wxID_CLEAR, _("&Delete"));
2077             m_privateContextMenu->AppendSeparator();
2078             m_privateContextMenu->Append(wxID_SELECTALL, _("Select &All"));
2079         }
2080         PopupMenu(m_privateContextMenu);
2081         return;
2082     }
2083     else
2084 #endif
2085     event.Skip();
2086 }
2087
2088 void wxTextCtrl::OnSetFocus(wxFocusEvent& WXUNUSED(event))
2089 {
2090     // be sure the caret remains invisible if the user had hidden it
2091     if ( !m_isNativeCaretShown )
2092     {
2093         ::HideCaret(GetHwnd());
2094     }
2095 }
2096
2097 // ----------------------------------------------------------------------------
2098 // Default colors for MSW text control
2099 //
2100 // Set default background color to the native white instead of
2101 // the default wxSYS_COLOUR_BTNFACE (is triggered with wxNullColour).
2102 // ----------------------------------------------------------------------------
2103
2104 wxVisualAttributes wxTextCtrl::GetDefaultAttributes() const
2105 {
2106     wxVisualAttributes attrs;
2107     attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
2108     attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
2109     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW); //white
2110
2111     return attrs;
2112 }
2113
2114 // the rest of the file only deals with the rich edit controls
2115 #if wxUSE_RICHEDIT
2116
2117 // ----------------------------------------------------------------------------
2118 // EN_LINK processing
2119 // ----------------------------------------------------------------------------
2120
2121 bool wxTextCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
2122 {
2123     NMHDR *hdr = (NMHDR* )lParam;
2124     switch ( hdr->code )
2125     {
2126        case EN_MSGFILTER:
2127             {
2128                 const MSGFILTER *msgf = (MSGFILTER *)lParam;
2129                 UINT msg = msgf->msg;
2130
2131                 // this is a bit crazy but richedit 1.0 sends us all mouse
2132                 // events _except_ WM_LBUTTONUP (don't ask me why) so we have
2133                 // generate the wxWin events for this message manually
2134                 //
2135                 // NB: in fact, this is still not totally correct as it does
2136                 //     send us WM_LBUTTONUP if the selection was cleared by the
2137                 //     last click -- so currently we get 2 events in this case,
2138                 //     but as I don't see any obvious way to check for this I
2139                 //     leave this code in place because it's still better than
2140                 //     not getting left up events at all
2141                 if ( msg == WM_LBUTTONUP )
2142                 {
2143                     WXUINT flags = msgf->wParam;
2144                     int x = GET_X_LPARAM(msgf->lParam),
2145                         y = GET_Y_LPARAM(msgf->lParam);
2146
2147                     HandleMouseEvent(msg, x, y, flags);
2148                 }
2149             }
2150
2151             // return true to process the event (and false to ignore it)
2152             return true;
2153
2154         case EN_LINK:
2155             {
2156                 const ENLINK *enlink = (ENLINK *)hdr;
2157
2158                 switch ( enlink->msg )
2159                 {
2160                     case WM_SETCURSOR:
2161                         // ok, so it is hardcoded - do we really nee to
2162                         // customize it?
2163                         {
2164                             wxCursor cur(wxCURSOR_HAND);
2165                             ::SetCursor(GetHcursorOf(cur));
2166                             *result = TRUE;
2167                             break;
2168                         }
2169
2170                     case WM_MOUSEMOVE:
2171                     case WM_LBUTTONDOWN:
2172                     case WM_LBUTTONUP:
2173                     case WM_LBUTTONDBLCLK:
2174                     case WM_RBUTTONDOWN:
2175                     case WM_RBUTTONUP:
2176                     case WM_RBUTTONDBLCLK:
2177                         // send a mouse event
2178                         {
2179                             static const wxEventType eventsMouse[] =
2180                             {
2181                                 wxEVT_MOTION,
2182                                 wxEVT_LEFT_DOWN,
2183                                 wxEVT_LEFT_UP,
2184                                 wxEVT_LEFT_DCLICK,
2185                                 wxEVT_RIGHT_DOWN,
2186                                 wxEVT_RIGHT_UP,
2187                                 wxEVT_RIGHT_DCLICK,
2188                             };
2189
2190                             // the event ids are consecutive
2191                             wxMouseEvent
2192                                 evtMouse(eventsMouse[enlink->msg - WM_MOUSEMOVE]);
2193
2194                             InitMouseEvent(evtMouse,
2195                                            GET_X_LPARAM(enlink->lParam),
2196                                            GET_Y_LPARAM(enlink->lParam),
2197                                            enlink->wParam);
2198
2199                             wxTextUrlEvent event(m_windowId, evtMouse,
2200                                                  enlink->chrg.cpMin,
2201                                                  enlink->chrg.cpMax);
2202
2203                             InitCommandEvent(event);
2204
2205                             *result = ProcessCommand(event);
2206                         }
2207                         break;
2208                 }
2209             }
2210             return true;
2211     }
2212
2213     // not processed, leave it to the base class
2214     return wxTextCtrlBase::MSWOnNotify(idCtrl, lParam, result);
2215 }
2216
2217 // ----------------------------------------------------------------------------
2218 // colour setting for the rich edit controls
2219 // ----------------------------------------------------------------------------
2220
2221 bool wxTextCtrl::SetBackgroundColour(const wxColour& colour)
2222 {
2223     if ( !wxTextCtrlBase::SetBackgroundColour(colour) )
2224     {
2225         // colour didn't really change
2226         return false;
2227     }
2228
2229     if ( IsRich() )
2230     {
2231         // rich edit doesn't use WM_CTLCOLOR, hence we need to send
2232         // EM_SETBKGNDCOLOR additionally
2233         ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour));
2234     }
2235
2236     return true;
2237 }
2238
2239 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
2240 {
2241     if ( !wxTextCtrlBase::SetForegroundColour(colour) )
2242     {
2243         // colour didn't really change
2244         return false;
2245     }
2246
2247     if ( IsRich() )
2248     {
2249         // change the colour of everything
2250         CHARFORMAT cf;
2251         wxZeroMemory(cf);
2252         cf.cbSize = sizeof(cf);
2253         cf.dwMask = CFM_COLOR;
2254         cf.crTextColor = wxColourToRGB(colour);
2255         ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf);
2256     }
2257
2258     return true;
2259 }
2260
2261 // ----------------------------------------------------------------------------
2262 // styling support for rich edit controls
2263 // ----------------------------------------------------------------------------
2264
2265 #if wxUSE_RICHEDIT
2266
2267 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
2268 {
2269     if ( !IsRich() )
2270     {
2271         // can't do it with normal text control
2272         return false;
2273     }
2274
2275     // the richedit 1.0 doesn't handle setting background colour, so don't
2276     // even try to do anything if it's the only thing we want to change
2277     if ( m_verRichEdit == 1 && !style.HasFont() && !style.HasTextColour() &&
2278         !style.HasLeftIndent() && !style.HasRightIndent() && !style.HasAlignment() &&
2279         !style.HasTabs() )
2280     {
2281         // nothing to do: return true if there was really nothing to do and
2282         // false if we failed to set bg colour
2283         return !style.HasBackgroundColour();
2284     }
2285
2286     // order the range if needed
2287     if ( start > end )
2288     {
2289         long tmp = start;
2290         start = end;
2291         end = tmp;
2292     }
2293
2294     // we can only change the format of the selection, so select the range we
2295     // want and restore the old selection later
2296     long startOld, endOld;
2297     GetSelection(&startOld, &endOld);
2298
2299     // but do we really have to change the selection?
2300     bool changeSel = start != startOld || end != endOld;
2301
2302     if ( changeSel )
2303     {
2304         DoSetSelection(start, end, false /* don't scroll caret into view */);
2305     }
2306
2307     // initialize CHARFORMAT struct
2308 #if wxUSE_RICHEDIT2
2309     CHARFORMAT2 cf;
2310 #else
2311     CHARFORMAT cf;
2312 #endif
2313
2314     wxZeroMemory(cf);
2315
2316     // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2317     // CHARFORMAT in that case
2318 #if wxUSE_RICHEDIT2
2319     if ( m_verRichEdit == 1 )
2320     {
2321         // this is the only thing the control is going to grok
2322         cf.cbSize = sizeof(CHARFORMAT);
2323     }
2324     else
2325 #endif
2326     {
2327         // CHARFORMAT or CHARFORMAT2
2328         cf.cbSize = sizeof(cf);
2329     }
2330
2331     if ( style.HasFont() )
2332     {
2333         // VZ: CFM_CHARSET doesn't seem to do anything at all in RichEdit 2.0
2334         //     but using it doesn't seem to hurt neither so leaving it for now
2335
2336         cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET |
2337                      CFM_ITALIC | CFM_BOLD | CFM_UNDERLINE;
2338
2339         // fill in data from LOGFONT but recalculate lfHeight because we need
2340         // the real height in twips and not the negative number which
2341         // wxFillLogFont() returns (this is correct in general and works with
2342         // the Windows font mapper, but not here)
2343         LOGFONT lf;
2344         wxFillLogFont(&lf, &style.GetFont());
2345         cf.yHeight = 20*style.GetFont().GetPointSize(); // 1 pt = 20 twips
2346         cf.bCharSet = lf.lfCharSet;
2347         cf.bPitchAndFamily = lf.lfPitchAndFamily;
2348         wxStrncpy( cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName) );
2349
2350         // also deal with underline/italic/bold attributes: note that we must
2351         // always set CFM_ITALIC &c bits in dwMask, even if we don't set the
2352         // style to allow clearing it
2353         if ( lf.lfItalic )
2354         {
2355             cf.dwEffects |= CFE_ITALIC;
2356         }
2357
2358         if ( lf.lfWeight == FW_BOLD )
2359         {
2360             cf.dwEffects |= CFE_BOLD;
2361         }
2362
2363         if ( lf.lfUnderline )
2364         {
2365             cf.dwEffects |= CFE_UNDERLINE;
2366         }
2367
2368         // strikeout fonts are not supported by wxWidgets
2369     }
2370
2371     if ( style.HasTextColour() )
2372     {
2373         cf.dwMask |= CFM_COLOR;
2374         cf.crTextColor = wxColourToRGB(style.GetTextColour());
2375     }
2376
2377 #if wxUSE_RICHEDIT2
2378     if ( m_verRichEdit != 1 && style.HasBackgroundColour() )
2379     {
2380         cf.dwMask |= CFM_BACKCOLOR;
2381         cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
2382     }
2383 #endif // wxUSE_RICHEDIT2
2384
2385     // do format the selection
2386     bool ok = ::SendMessage(GetHwnd(), EM_SETCHARFORMAT,
2387                             SCF_SELECTION, (LPARAM)&cf) != 0;
2388     if ( !ok )
2389     {
2390         wxLogDebug(_T("SendMessage(EM_SETCHARFORMAT, SCF_SELECTION) failed"));
2391     }
2392
2393     // now do the paragraph formatting
2394     PARAFORMAT2 pf;
2395     wxZeroMemory(pf);
2396     // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2397     // PARAFORMAT in that case
2398 #if wxUSE_RICHEDIT2
2399     if ( m_verRichEdit == 1 )
2400     {
2401         // this is the only thing the control is going to grok
2402         pf.cbSize = sizeof(PARAFORMAT);
2403     }
2404     else
2405 #endif
2406     {
2407         // PARAFORMAT or PARAFORMAT2
2408         pf.cbSize = sizeof(pf);
2409     }
2410
2411     if (style.HasAlignment())
2412     {
2413         pf.dwMask |= PFM_ALIGNMENT;
2414         if (style.GetAlignment() == wxTEXT_ALIGNMENT_RIGHT)
2415             pf.wAlignment = PFA_RIGHT;
2416         else if (style.GetAlignment() == wxTEXT_ALIGNMENT_CENTRE)
2417             pf.wAlignment = PFA_CENTER;
2418         else if (style.GetAlignment() == wxTEXT_ALIGNMENT_JUSTIFIED)
2419             pf.wAlignment = PFA_JUSTIFY;
2420         else
2421             pf.wAlignment = PFA_LEFT;
2422     }
2423
2424     if (style.HasLeftIndent())
2425     {
2426         pf.dwMask |= PFM_STARTINDENT | PFM_OFFSET;
2427
2428         // Convert from 1/10 mm to TWIPS
2429         pf.dxStartIndent = (int) (((double) style.GetLeftIndent()) * mm2twips / 10.0) ;
2430         pf.dxOffset = (int) (((double) style.GetLeftSubIndent()) * mm2twips / 10.0) ;
2431     }
2432
2433     if (style.HasRightIndent())
2434     {
2435         pf.dwMask |= PFM_RIGHTINDENT;
2436
2437         // Convert from 1/10 mm to TWIPS
2438         pf.dxRightIndent = (int) (((double) style.GetRightIndent()) * mm2twips / 10.0) ;
2439     }
2440
2441     if (style.HasTabs())
2442     {
2443         pf.dwMask |= PFM_TABSTOPS;
2444
2445         const wxArrayInt& tabs = style.GetTabs();
2446
2447         pf.cTabCount = (SHORT)wxMin(tabs.GetCount(), MAX_TAB_STOPS);
2448         size_t i;
2449         for (i = 0; i < (size_t) pf.cTabCount; i++)
2450         {
2451             // Convert from 1/10 mm to TWIPS
2452             pf.rgxTabs[i] = (int) (((double) tabs[i]) * mm2twips / 10.0) ;
2453         }
2454     }
2455
2456     if (pf.dwMask != 0)
2457     {
2458         // do format the selection
2459         bool ok = ::SendMessage(GetHwnd(), EM_SETPARAFORMAT,
2460             0, (LPARAM) &pf) != 0;
2461         if ( !ok )
2462         {
2463             wxLogDebug(_T("SendMessage(EM_SETPARAFORMAT, 0) failed"));
2464         }
2465     }
2466
2467     if ( changeSel )
2468     {
2469         // restore the original selection
2470         DoSetSelection(startOld, endOld, false);
2471     }
2472
2473     return ok;
2474 }
2475
2476 bool wxTextCtrl::SetDefaultStyle(const wxTextAttr& style)
2477 {
2478     if ( !wxTextCtrlBase::SetDefaultStyle(style) )
2479         return false;
2480
2481     if ( IsEditable() )
2482     {
2483         // we have to do this or the style wouldn't apply for the text typed by
2484         // the user
2485         wxTextPos posLast = GetLastPosition();
2486         SetStyle(posLast, posLast, m_defaultStyle);
2487     }
2488
2489     return true;
2490 }
2491
2492 bool wxTextCtrl::GetStyle(long position, wxTextAttr& style)
2493 {
2494     if ( !IsRich() )
2495     {
2496         // can't do it with normal text control
2497         return false;
2498     }
2499
2500     // initialize CHARFORMAT struct
2501 #if wxUSE_RICHEDIT2
2502     CHARFORMAT2 cf;
2503 #else
2504     CHARFORMAT cf;
2505 #endif
2506
2507     wxZeroMemory(cf);
2508
2509     // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2510     // CHARFORMAT in that case
2511 #if wxUSE_RICHEDIT2
2512     if ( m_verRichEdit == 1 )
2513     {
2514         // this is the only thing the control is going to grok
2515         cf.cbSize = sizeof(CHARFORMAT);
2516     }
2517     else
2518 #endif
2519     {
2520         // CHARFORMAT or CHARFORMAT2
2521         cf.cbSize = sizeof(cf);
2522     }
2523     // we can only change the format of the selection, so select the range we
2524     // want and restore the old selection later
2525     long startOld, endOld;
2526     GetSelection(&startOld, &endOld);
2527
2528     // but do we really have to change the selection?
2529     bool changeSel = position != startOld || position != endOld;
2530
2531     if ( changeSel )
2532     {
2533         DoSetSelection(position, position+1, false /* don't scroll caret into view */);
2534     }
2535
2536     // get the selection formatting
2537     (void) ::SendMessage(GetHwnd(), EM_GETCHARFORMAT,
2538                             SCF_SELECTION, (LPARAM)&cf) ;
2539
2540
2541     LOGFONT lf;
2542     lf.lfHeight = cf.yHeight;
2543     lf.lfWidth = 0;
2544     lf.lfCharSet = ANSI_CHARSET; // FIXME: how to get correct charset?
2545     lf.lfClipPrecision = 0;
2546     lf.lfEscapement = 0;
2547     wxStrcpy(lf.lfFaceName, cf.szFaceName);
2548
2549     //NOTE:  we _MUST_ set each of these values to _something_ since we
2550     //do not call wxZeroMemory on the LOGFONT lf
2551     if (cf.dwEffects & CFE_ITALIC)
2552         lf.lfItalic = TRUE;
2553     else
2554         lf.lfItalic = FALSE;
2555
2556     lf.lfOrientation = 0;
2557     lf.lfPitchAndFamily = cf.bPitchAndFamily;
2558     lf.lfQuality = 0;
2559
2560     if (cf.dwEffects & CFE_STRIKEOUT)
2561         lf.lfStrikeOut = TRUE;
2562     else
2563         lf.lfStrikeOut = FALSE;
2564
2565     if (cf.dwEffects & CFE_UNDERLINE)
2566         lf.lfUnderline = TRUE;
2567     else
2568         lf.lfUnderline = FALSE;
2569
2570     if (cf.dwEffects & CFE_BOLD)
2571         lf.lfWeight = FW_BOLD;
2572     else
2573         lf.lfWeight = FW_NORMAL;
2574
2575     wxFont font = wxCreateFontFromLogFont(& lf);
2576     if (font.Ok())
2577     {
2578         style.SetFont(font);
2579     }
2580     style.SetTextColour(wxColour(cf.crTextColor));
2581
2582 #if wxUSE_RICHEDIT2
2583     if ( m_verRichEdit != 1 )
2584     {
2585         // cf.dwMask |= CFM_BACKCOLOR;
2586         style.SetBackgroundColour(wxColour(cf.crBackColor));
2587     }
2588 #endif // wxUSE_RICHEDIT2
2589
2590     // now get the paragraph formatting
2591     PARAFORMAT2 pf;
2592     wxZeroMemory(pf);
2593     // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2594     // PARAFORMAT in that case
2595 #if wxUSE_RICHEDIT2
2596     if ( m_verRichEdit == 1 )
2597     {
2598         // this is the only thing the control is going to grok
2599         pf.cbSize = sizeof(PARAFORMAT);
2600     }
2601     else
2602 #endif
2603     {
2604         // PARAFORMAT or PARAFORMAT2
2605         pf.cbSize = sizeof(pf);
2606     }
2607
2608     // do format the selection
2609     (void) ::SendMessage(GetHwnd(), EM_GETPARAFORMAT, 0, (LPARAM) &pf) ;
2610
2611     style.SetLeftIndent( (int) ((double) pf.dxStartIndent * twips2mm * 10.0), (int) ((double) pf.dxOffset * twips2mm * 10.0) );
2612     style.SetRightIndent( (int) ((double) pf.dxRightIndent * twips2mm * 10.0) );
2613
2614     if (pf.wAlignment == PFA_CENTER)
2615         style.SetAlignment(wxTEXT_ALIGNMENT_CENTRE);
2616     else if (pf.wAlignment == PFA_RIGHT)
2617         style.SetAlignment(wxTEXT_ALIGNMENT_RIGHT);
2618     else if (pf.wAlignment == PFA_JUSTIFY)
2619         style.SetAlignment(wxTEXT_ALIGNMENT_JUSTIFIED);
2620     else
2621         style.SetAlignment(wxTEXT_ALIGNMENT_LEFT);
2622
2623     wxArrayInt tabStops;
2624     size_t i;
2625     for (i = 0; i < (size_t) pf.cTabCount; i++)
2626     {
2627         tabStops.Add( (int) ((double) (pf.rgxTabs[i] & 0xFFFF) * twips2mm * 10.0) );
2628     }
2629
2630     if ( changeSel )
2631     {
2632         // restore the original selection
2633         DoSetSelection(startOld, endOld, false);
2634     }
2635
2636     return true;
2637 }
2638
2639 #endif
2640
2641 // ----------------------------------------------------------------------------
2642 // wxRichEditModule
2643 // ----------------------------------------------------------------------------
2644
2645 static const HINSTANCE INVALID_HINSTANCE = (HINSTANCE)-1;
2646
2647 bool wxRichEditModule::OnInit()
2648 {
2649     // don't do anything - we will load it when needed
2650     return true;
2651 }
2652
2653 void wxRichEditModule::OnExit()
2654 {
2655     for ( size_t i = 0; i < WXSIZEOF(ms_hRichEdit); i++ )
2656     {
2657         if ( ms_hRichEdit[i] && ms_hRichEdit[i] != INVALID_HINSTANCE )
2658         {
2659             ::FreeLibrary(ms_hRichEdit[i]);
2660             ms_hRichEdit[i] = NULL;
2661         }
2662     }
2663 }
2664
2665 /* static */
2666 bool wxRichEditModule::Load(Version version)
2667 {
2668     if ( ms_hRichEdit[version] == INVALID_HINSTANCE )
2669     {
2670         // we had already tried to load it and failed
2671         return false;
2672     }
2673
2674     if ( ms_hRichEdit[version] )
2675     {
2676         // we've already got this one
2677         return true;
2678     }
2679
2680     static const wxChar *dllnames[] =
2681     {
2682         _T("riched32"),
2683         _T("riched20"),
2684         _T("msftedit"),
2685     };
2686
2687     wxCOMPILE_TIME_ASSERT( WXSIZEOF(dllnames) == Version_Max,
2688                             RichEditDllNamesVersionsMismatch );
2689
2690     ms_hRichEdit[version] = ::LoadLibrary(dllnames[version]);
2691
2692     if ( !ms_hRichEdit[version] )
2693     {
2694         ms_hRichEdit[version] = INVALID_HINSTANCE;
2695
2696         return false;
2697     }
2698
2699     return true;
2700 }
2701
2702 #endif // wxUSE_RICHEDIT
2703
2704 #endif // wxUSE_TEXTCTRL && !(__SMARTPHONE__ && __WXWINCE__)