src/msw/textctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        msw/textctrl.cpp
   3 // Purpose:     wxTextCtrl
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 #ifdef __GNUG__
  17     #pragma implementation "textctrl.h"
  18 #endif
  19
  20 // ----------------------------------------------------------------------------
  21 // headers
  22 // ----------------------------------------------------------------------------
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #if wxUSE_TEXTCTRL
  32
  33 #ifndef WX_PRECOMP
  34     #include "wx/textctrl.h"
  35     #include "wx/settings.h"
  36     #include "wx/brush.h"
  37     #include "wx/utils.h"
  38     #include "wx/intl.h"
  39     #include "wx/log.h"
  40     #include "wx/app.h"
  41     #include "wx/menu.h"
  42 #endif
  43
  44 #include "wx/module.h"
  45
  46 #if wxUSE_CLIPBOARD
  47     #include "wx/clipbrd.h"
  48 #endif
  49
  50 #include "wx/textfile.h"
  51
  52 #include <windowsx.h>
  53
  54 #include "wx/msw/private.h"
  55 #include "wx/msw/winundef.h"
  56
  57 #include <string.h>
  58 #include <stdlib.h>
  59
  60 #ifndef __WXWINCE__
  61 #include <sys/types.h>
  62 #endif
  63
  64 #if wxUSE_RICHEDIT
  65
  66 // old mingw32 has richedit stuff directly in windows.h and doesn't have
  67 // richedit.h at all
  68 #if !defined(__GNUWIN32_OLD__) || defined(__CYGWIN10__)
  69     #include <richedit.h>
  70 #endif
  71
  72 #include "wx/msw/missing.h"
  73
  74 #endif // wxUSE_RICHEDIT
  75
  76 // ----------------------------------------------------------------------------
  77 // private functions
  78 // ----------------------------------------------------------------------------
  79
  80 #if wxUSE_RICHEDIT
  81
  82 DWORD CALLBACK wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb);
  83
  84 #endif // wxUSE_RICHEDIT
  85
  86 // ----------------------------------------------------------------------------
  87 // private classes
  88 // ----------------------------------------------------------------------------
  89
  90 #if wxUSE_RICHEDIT
  91
  92 // this module initializes RichEdit DLL(s) if needed
  93 class wxRichEditModule : public wxModule
  94 {
  95 public:
  96     virtual bool OnInit();
  97     virtual void OnExit();
  98
  99     // load the richedit DLL of at least of required version
 100     static bool Load(int version = 1);
 101
 102 private:
 103     // the handles to richedit 1.0 and 2.0 (or 3.0) DLLs
 104     static HINSTANCE ms_hRichEdit[2];
 105
 106     DECLARE_DYNAMIC_CLASS(wxRichEditModule)
 107 };
 108
 109 HINSTANCE wxRichEditModule::ms_hRichEdit[2] = { NULL, NULL };
 110
 111 IMPLEMENT_DYNAMIC_CLASS(wxRichEditModule, wxModule)
 112
 113 #endif // wxUSE_RICHEDIT
 114
 115 // ----------------------------------------------------------------------------
 116 // event tables and other macros
 117 // ----------------------------------------------------------------------------
 118
 119 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxControl)
 120
 121 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
 122     EVT_CHAR(wxTextCtrl::OnChar)
 123     EVT_DROP_FILES(wxTextCtrl::OnDropFiles)
 124
 125 #if wxUSE_RICHEDIT
 126     EVT_RIGHT_UP(wxTextCtrl::OnRightClick)
 127 #endif
 128
 129     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 130     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 131     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 132     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 133     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 134     EVT_MENU(wxID_CLEAR, wxTextCtrl::OnDelete)
 135     EVT_MENU(wxID_SELECTALL, wxTextCtrl::OnSelectAll)
 136
 137     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 138     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 139     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 140     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 141     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 142     EVT_UPDATE_UI(wxID_CLEAR, wxTextCtrl::OnUpdateDelete)
 143     EVT_UPDATE_UI(wxID_SELECTALL, wxTextCtrl::OnUpdateSelectAll)
 144 #ifdef __WIN16__
 145     EVT_ERASE_BACKGROUND(wxTextCtrl::OnEraseBackground)
 146 #endif
 147
 148     EVT_SET_FOCUS(wxTextCtrl::OnSetFocus)
 149 END_EVENT_TABLE()
 150
 151 // ============================================================================
 152 // implementation
 153 // ============================================================================
 154
 155 // ----------------------------------------------------------------------------
 156 // creation
 157 // ----------------------------------------------------------------------------
 158
 159 void wxTextCtrl::Init()
 160 {
 161 #if wxUSE_RICHEDIT
 162     m_verRichEdit = 0;
 163 #endif // wxUSE_RICHEDIT
 164
 165     m_privateContextMenu = NULL;
 166     m_suppressNextUpdate = FALSE;
 167     m_isNativeCaretShown = true;
 168 }
 169
 170 wxTextCtrl::~wxTextCtrl()
 171 {
 172     if (m_privateContextMenu)
 173     {
 174         delete m_privateContextMenu;
 175         m_privateContextMenu = NULL;
 176     }
 177 }
 178
 179 bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id,
 180                         const wxString& value,
 181                         const wxPoint& pos,
 182                         const wxSize& size,
 183                         long style,
 184                         const wxValidator& validator,
 185                         const wxString& name)
 186 {
 187     // base initialization
 188     if ( !CreateBase(parent, id, pos, size, style, validator, name) )
 189         return FALSE;
 190
 191     if ( parent )
 192         parent->AddChild(this);
 193
 194     // translate wxWin style flags to MSW ones
 195     WXDWORD msStyle = MSWGetCreateWindowFlags();
 196
 197     // do create the control - either an EDIT or RICHEDIT
 198     wxString windowClass = wxT("EDIT");
 199
 200 #if wxUSE_RICHEDIT
 201     if ( m_windowStyle & wxTE_AUTO_URL )
 202     {
 203         // automatic URL detection only works in RichEdit 2.0+
 204         m_windowStyle |= wxTE_RICH2;
 205     }
 206
 207     if ( m_windowStyle & wxTE_RICH2 )
 208     {
 209         // using richedit 2.0 implies using wxTE_RICH
 210         m_windowStyle |= wxTE_RICH;
 211     }
 212
 213     // we need to load the richedit DLL before creating the rich edit control
 214     if ( m_windowStyle & wxTE_RICH )
 215     {
 216         static bool s_errorGiven = FALSE;// MT-FIXME
 217
 218         // Which version do we need? Use 1.0 by default because it is much more
 219         // like the the standard EDIT or 2.0 if explicitly requested, but use
 220         // only 2.0 in Unicode mode as 1.0 doesn't support Unicode at all
 221         //
 222         // TODO: RichEdit 3.0 is apparently capable of emulating RichEdit 1.0
 223         //       (and thus EDIT) much better than RichEdit 2.0 so we probably
 224         //       should use 3.0 if available as it is the best of both worlds -
 225         //       but as I can't test it right now I don't do it (VZ)
 226 #if wxUSE_UNICODE
 227         const int verRichEdit = 2;
 228 #else // !wxUSE_UNICODE
 229         int verRichEdit = m_windowStyle & wxTE_RICH2 ? 2 : 1;
 230 #endif // wxUSE_UNICODE/!wxUSE_UNICODE
 231
 232         // only give the error msg once if the DLL can't be loaded
 233         if ( !s_errorGiven )
 234         {
 235             // try to load the RichEdit DLL (will do nothing if already done)
 236             if ( !wxRichEditModule::Load(verRichEdit) )
 237             {
 238 #if !wxUSE_UNICODE
 239                 // try another version?
 240                 verRichEdit = 3 - verRichEdit; // 1 <-> 2
 241
 242                 if ( !wxRichEditModule::Load(verRichEdit) )
 243 #endif // wxUSE_UNICODE
 244                 {
 245                     wxLogError(_("Impossible to create a rich edit control, using simple text control instead. Please reinstall riched32.dll"));
 246
 247                     s_errorGiven = TRUE;
 248                 }
 249             }
 250         }
 251
 252         // have we managed to load any richedit version?
 253         if ( !s_errorGiven )
 254         {
 255             m_verRichEdit = verRichEdit;
 256             if ( m_verRichEdit == 1 )
 257             {
 258                 windowClass = wxT("RICHEDIT");
 259             }
 260             else
 261             {
 262 #ifndef RICHEDIT_CLASS
 263                 wxString RICHEDIT_CLASS;
 264                 RICHEDIT_CLASS.Printf(_T("RichEdit%d0"), m_verRichEdit);
 265 #if wxUSE_UNICODE
 266                 RICHEDIT_CLASS += _T('W');
 267 #else // ANSI
 268                 RICHEDIT_CLASS += _T('A');
 269 #endif // Unicode/ANSI
 270 #endif // !RICHEDIT_CLASS
 271
 272                 windowClass = RICHEDIT_CLASS;
 273             }
 274         }
 275     }
 276 #endif // wxUSE_RICHEDIT
 277
 278     // we need to turn '\n's into "\r\n"s for the multiline controls
 279     wxString valueWin;
 280     if ( m_windowStyle & wxTE_MULTILINE )
 281     {
 282         valueWin = wxTextFile::Translate(value, wxTextFileType_Dos);
 283     }
 284     else // single line
 285     {
 286         valueWin = value;
 287     }
 288
 289     if ( !MSWCreateControl(windowClass, msStyle, pos, size, valueWin) )
 290         return FALSE;
 291
 292     SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
 293
 294 #if wxUSE_RICHEDIT
 295     if ( IsRich() )
 296     {
 297         // enable the events we're interested in: we want to get EN_CHANGE as
 298         // for the normal controls
 299         LPARAM mask = ENM_CHANGE;
 300
 301         if ( GetRichVersion() == 1 )
 302         {
 303             // we also need EN_MSGFILTER for richedit 1.0 for the reasons
 304             // explained in its handler
 305            mask |= ENM_MOUSEEVENTS;
 306         }
 307         else if ( m_windowStyle & wxTE_AUTO_URL )
 308         {
 309             mask |= ENM_LINK;
 310
 311             ::SendMessage(GetHwnd(), EM_AUTOURLDETECT, TRUE, 0);
 312         }
 313
 314         ::SendMessage(GetHwnd(), EM_SETEVENTMASK, 0, mask);
 315     }
 316 #endif // wxUSE_RICHEDIT
 317
 318     return TRUE;
 319 }
 320
 321 // Make sure the window style (etc.) reflects the HWND style (roughly)
 322 void wxTextCtrl::AdoptAttributesFromHWND()
 323 {
 324     wxWindow::AdoptAttributesFromHWND();
 325
 326     HWND hWnd = GetHwnd();
 327     long style = ::GetWindowLong(hWnd, GWL_STYLE);
 328
 329     // retrieve the style to see whether this is an edit or richedit ctrl
 330 #if wxUSE_RICHEDIT
 331     wxString classname = wxGetWindowClass(GetHWND());
 332
 333     if ( classname.IsSameAs(_T("EDIT"), FALSE /* no case */) )
 334     {
 335         m_verRichEdit = 0;
 336     }
 337     else // rich edit?
 338     {
 339         wxChar c;
 340         if ( wxSscanf(classname, _T("RichEdit%d0%c"), &m_verRichEdit, &c) != 2 )
 341         {
 342             wxLogDebug(_T("Unknown edit control '%s'."), classname.c_str());
 343
 344             m_verRichEdit = 0;
 345         }
 346     }
 347 #endif // wxUSE_RICHEDIT
 348
 349     if (style & ES_MULTILINE)
 350         m_windowStyle |= wxTE_MULTILINE;
 351     if (style & ES_PASSWORD)
 352         m_windowStyle |= wxTE_PASSWORD;
 353     if (style & ES_READONLY)
 354         m_windowStyle |= wxTE_READONLY;
 355     if (style & ES_WANTRETURN)
 356         m_windowStyle |= wxTE_PROCESS_ENTER;
 357     if (style & ES_CENTER)
 358         m_windowStyle |= wxTE_CENTRE;
 359     if (style & ES_RIGHT)
 360         m_windowStyle |= wxTE_RIGHT;
 361 }
 362
 363 WXDWORD wxTextCtrl::MSWGetStyle(long style, WXDWORD *exstyle) const
 364 {
 365     long msStyle = wxControl::MSWGetStyle(style, exstyle);
 366
 367     // styles which we alaways add by default
 368     if ( style & wxTE_MULTILINE )
 369     {
 370         wxASSERT_MSG( !(style & wxTE_PROCESS_ENTER),
 371                       wxT("wxTE_PROCESS_ENTER style is ignored for multiline text controls (they always process it)") );
 372
 373         msStyle |= ES_MULTILINE | ES_WANTRETURN;
 374         if ( !(style & wxTE_NO_VSCROLL) )
 375         {
 376             // always adjust the vertical scrollbar automatically if we have it
 377             msStyle |= WS_VSCROLL | ES_AUTOVSCROLL;
 378
 379 #if wxUSE_RICHEDIT
 380             // we have to use this style for the rich edit controls because
 381             // without it the vertical scrollbar never appears at all in
 382             // richedit 3.0 because of our ECO_NOHIDESEL hack (search for it)
 383             if ( style & wxTE_RICH2 )
 384             {
 385                 msStyle |= ES_DISABLENOSCROLL;
 386             }
 387 #endif // wxUSE_RICHEDIT
 388         }
 389
 390         style |= wxTE_PROCESS_ENTER;
 391     }
 392     else // !multiline
 393     {
 394         // there is really no reason to not have this style for single line
 395         // text controls
 396         msStyle |= ES_AUTOHSCROLL;
 397     }
 398
 399     // styles which we add depending on the specified wxWindows styles
 400     if ( style & wxHSCROLL )
 401     {
 402         // automatically scroll the control horizontally as necessary
 403         msStyle |= WS_HSCROLL;// | ES_AUTOHSCROLL;
 404     }
 405
 406     if ( style & wxTE_READONLY )
 407         msStyle |= ES_READONLY;
 408
 409     if ( style & wxTE_PASSWORD )
 410         msStyle |= ES_PASSWORD;
 411
 412     if ( style & wxTE_NOHIDESEL )
 413         msStyle |= ES_NOHIDESEL;
 414
 415     // note that we can't do do "& wxTE_LEFT" as wxTE_LEFT == 0
 416     if ( style & wxTE_CENTRE )
 417         msStyle |= ES_CENTER;
 418     else if ( style & wxTE_RIGHT )
 419         msStyle |= ES_RIGHT;
 420     else
 421         msStyle |= ES_LEFT; // ES_LEFT if 0 as well but for consistency...
 422
 423     return msStyle;
 424 }
 425
 426 void wxTextCtrl::SetWindowStyleFlag(long style)
 427 {
 428 #if wxUSE_RICHEDIT
 429     // we have to deal with some styles separately because they can't be
 430     // changed by simply calling SetWindowLong(GWL_STYLE) but can be changed
 431     // using richedit-specific EM_SETOPTIONS
 432     if ( IsRich() &&
 433             ((style & wxTE_NOHIDESEL) != (GetWindowStyle() & wxTE_NOHIDESEL)) )
 434     {
 435         bool set = (style & wxTE_NOHIDESEL) != 0;
 436
 437         ::SendMessage(GetHwnd(), EM_SETOPTIONS, set ? ECOOP_OR : ECOOP_AND,
 438                       set ? ECO_NOHIDESEL : ~ECO_NOHIDESEL);
 439     }
 440 #endif // wxUSE_RICHEDIT
 441
 442     wxControl::SetWindowStyleFlag(style);
 443 }
 444
 445 // ----------------------------------------------------------------------------
 446 // set/get the controls text
 447 // ----------------------------------------------------------------------------
 448
 449 wxString wxTextCtrl::GetValue() const
 450 {
 451     // range 0..-1 is special for GetRange() and means to retrieve all text
 452     return GetRange(0, -1);
 453 }
 454
 455 wxString wxTextCtrl::GetRange(long from, long to) const
 456 {
 457     wxString str;
 458
 459     if ( from >= to && to != -1 )
 460     {
 461         // nothing to retrieve
 462         return str;
 463     }
 464
 465 #if wxUSE_RICHEDIT
 466     if ( IsRich() )
 467     {
 468         int len = GetWindowTextLength(GetHwnd());
 469         if ( len > from )
 470         {
 471             // alloc one extra WORD as needed by the control
 472             wxChar *p = str.GetWriteBuf(++len);
 473
 474             TEXTRANGE textRange;
 475             textRange.chrg.cpMin = from;
 476             textRange.chrg.cpMax = to == -1 ? len : to;
 477             textRange.lpstrText = p;
 478
 479             (void)SendMessage(GetHwnd(), EM_GETTEXTRANGE, 0, (LPARAM)&textRange);
 480
 481             if ( m_verRichEdit > 1 )
 482             {
 483                 // RichEdit 2.0 uses just CR ('\r') for the newlines which is
 484                 // neither Unix nor Windows style - convert it to something
 485                 // reasonable
 486                 for ( ; *p; p++ )
 487                 {
 488                     if ( *p == _T('\r') )
 489                         *p = _T('\n');
 490                 }
 491             }
 492
 493             str.UngetWriteBuf();
 494
 495             if ( m_verRichEdit == 1 )
 496             {
 497                 // convert to the canonical form - see comment below
 498                 str = wxTextFile::Translate(str, wxTextFileType_Unix);
 499             }
 500         }
 501         //else: no text at all, leave the string empty
 502     }
 503     else
 504 #endif // wxUSE_RICHEDIT
 505     {
 506         // retrieve all text
 507         str = wxGetWindowText(GetHWND());
 508
 509         // need only a range?
 510         if ( from < to )
 511         {
 512             str = str.Mid(from, to - from);
 513         }
 514
 515         // WM_GETTEXT uses standard DOS CR+LF (\r\n) convention - convert to the
 516         // canonical one (same one as above) for consistency with the other kinds
 517         // of controls and, more importantly, with the other ports
 518         str = wxTextFile::Translate(str, wxTextFileType_Unix);
 519     }
 520
 521     return str;
 522 }
 523
 524 void wxTextCtrl::SetValue(const wxString& value)
 525 {
 526     // if the text is long enough, it's faster to just set it instead of first
 527     // comparing it with the old one (chances are that it will be different
 528     // anyhow, this comparison is there to avoid flicker for small single-line
 529     // edit controls mostly)
 530     if ( (value.length() > 0x400) || (value != GetValue()) )
 531     {
 532         DoWriteText(value, FALSE /* not selection only */);
 533     }
 534
 535     // we should reset the modified flag even if the value didn't really change
 536
 537     // mark the control as being not dirty - we changed its text, not the
 538     // user
 539     DiscardEdits();
 540
 541     // for compatibility, don't move the cursor when doing SetValue()
 542     SetInsertionPoint(0);
 543 }
 544
 545 #if wxUSE_RICHEDIT && (!wxUSE_UNICODE || wxUSE_UNICODE_MSLU)
 546
 547 DWORD CALLBACK wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb)
 548 {
 549     *pcb = 0;
 550
 551     wchar_t *wbuf = (wchar_t *)buf;
 552     const wchar_t *wpc = *(const wchar_t **)dwCookie;
 553     while ( cb && *wpc )
 554     {
 555         *wbuf++ = *wpc++;
 556
 557         cb -= sizeof(wchar_t);
 558         (*pcb) += sizeof(wchar_t);
 559     }
 560
 561     *(const wchar_t **)dwCookie = wpc;
 562
 563     return 0;
 564 }
 565
 566 // from utils.cpp
 567 extern WXDLLIMPEXP_BASE long wxEncodingToCodepage(wxFontEncoding encoding);
 568
 569 #if wxUSE_UNICODE_MSLU
 570 bool wxTextCtrl::StreamIn(const wxString& value,
 571                           wxFontEncoding WXUNUSED(encoding),
 572                           bool selectionOnly)
 573 {
 574     const wchar_t *wpc = value.c_str();
 575 #else // !wxUSE_UNICODE_MSLU
 576 bool wxTextCtrl::StreamIn(const wxString& value,
 577                           wxFontEncoding encoding,
 578                           bool selectionOnly)
 579 {
 580     // we have to use EM_STREAMIN to force richedit control 2.0+ to show any
 581     // text in the non default charset -- otherwise it thinks it knows better
 582     // than we do and always shows it in the default one
 583
 584     // first get the Windows code page for this encoding
 585     long codepage = wxEncodingToCodepage(encoding);
 586     if ( codepage == -1 )
 587     {
 588         // unknown encoding
 589         return FALSE;
 590     }
 591
 592     // next translate to Unicode using this code page
 593     int len = ::MultiByteToWideChar(codepage, 0, value, -1, NULL, 0);
 594
 595 #if wxUSE_WCHAR_T
 596     wxWCharBuffer wchBuf(len);
 597 #else
 598     wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
 599 #endif
 600
 601     if ( !::MultiByteToWideChar(codepage, 0, value, -1,
 602                                 (wchar_t *)(const wchar_t *)wchBuf, len) )
 603     {
 604         wxLogLastError(_T("MultiByteToWideChar"));
 605     }
 606
 607     // finally, stream it in the control
 608     const wchar_t *wpc = wchBuf;
 609 #endif // wxUSE_UNICODE_MSLU
 610
 611     EDITSTREAM eds;
 612     wxZeroMemory(eds);
 613     eds.dwCookie = (DWORD)&wpc;
 614     // the cast below is needed for broken (very) old mingw32 headers
 615     eds.pfnCallback = (EDITSTREAMCALLBACK)wxRichEditStreamIn;
 616
 617     // we're going to receive 2 EN_CHANGE notifications if we got any selection
 618     // (same problem as in DoWriteText())
 619     if ( selectionOnly && HasSelection() )
 620     {
 621         // so suppress one of them
 622         m_suppressNextUpdate = TRUE;
 623     }
 624
 625     ::SendMessage(GetHwnd(), EM_STREAMIN,
 626                   SF_TEXT |
 627                   SF_UNICODE |
 628                   (selectionOnly ? SFF_SELECTION : 0),
 629                   (LPARAM)&eds);
 630
 631     if ( eds.dwError )
 632     {
 633         wxLogLastError(_T("EM_STREAMIN"));
 634     }
 635
 636 #if !wxUSE_WCHAR_T
 637     free(wchBuf);
 638 #endif // !wxUSE_WCHAR_T
 639
 640     return TRUE;
 641 }
 642
 643 #endif // wxUSE_RICHEDIT
 644
 645 void wxTextCtrl::WriteText(const wxString& value)
 646 {
 647     DoWriteText(value);
 648 }
 649
 650 void wxTextCtrl::DoWriteText(const wxString& value, bool selectionOnly)
 651 {
 652     wxString valueDos;
 653     if ( m_windowStyle & wxTE_MULTILINE )
 654         valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
 655     else
 656         valueDos = value;
 657
 658 #if wxUSE_RICHEDIT
 659     // there are several complications with the rich edit controls here
 660     bool done = FALSE;
 661     if ( IsRich() )
 662     {
 663         // first, ensure that the new text will be in the default style
 664         if ( !m_defaultStyle.IsDefault() )
 665         {
 666             long start, end;
 667             GetSelection(&start, &end);
 668             SetStyle(start, end, m_defaultStyle);
 669         }
 670
 671 #if wxUSE_UNICODE_MSLU
 672         // RichEdit doesn't have Unicode version of EM_REPLACESEL on Win9x,
 673         // but EM_STREAMIN works
 674         if ( wxUsingUnicowsDll() && GetRichVersion() > 1 )
 675         {
 676            done = StreamIn(valueDos, wxFONTENCODING_SYSTEM, selectionOnly);
 677         }
 678 #endif // wxUSE_UNICODE_MSLU
 679
 680 #if !wxUSE_UNICODE
 681         // next check if the text we're inserting must be shown in a non
 682         // default charset -- this only works for RichEdit > 1.0
 683         if ( GetRichVersion() > 1 )
 684         {
 685             wxFont font = m_defaultStyle.GetFont();
 686             if ( !font.Ok() )
 687                 font = GetFont();
 688
 689             if ( font.Ok() )
 690             {
 691                wxFontEncoding encoding = font.GetEncoding();
 692                if ( encoding != wxFONTENCODING_SYSTEM )
 693                {
 694                    done = StreamIn(valueDos, encoding, selectionOnly);
 695                }
 696             }
 697         }
 698 #endif // !wxUSE_UNICODE
 699     }
 700
 701     if ( !done )
 702 #endif // wxUSE_RICHEDIT
 703     {
 704         // in some cases we get 2 EN_CHANGE notifications after the SendMessage
 705         // call below which is confusing for the client code and so should be
 706         // avoided
 707         //
 708         // these cases are: (a) plain EDIT controls if EM_REPLACESEL is used
 709         // and there is a non empty selection currently and (b) rich text
 710         // controls in any case
 711         if (
 712 #if wxUSE_RICHEDIT
 713             IsRich() ||
 714 #endif // wxUSE_RICHEDIT
 715             (selectionOnly && HasSelection()) )
 716         {
 717             m_suppressNextUpdate = TRUE;
 718         }
 719
 720         ::SendMessage(GetHwnd(), selectionOnly ? EM_REPLACESEL : WM_SETTEXT,
 721                       0, (LPARAM)valueDos.c_str());
 722
 723         // OTOH, non rich text controls don't generate any events at all when
 724         // we use WM_SETTEXT -- have to emulate them here
 725         if ( !selectionOnly
 726 #if wxUSE_RICHEDIT
 727                 && !IsRich()
 728 #endif // wxUSE_RICHEDIT
 729            )
 730         {
 731             // Windows already sends an update event for single-line
 732             // controls.
 733             if ( m_windowStyle & wxTE_MULTILINE )
 734                 SendUpdateEvent();
 735         }
 736     }
 737
 738     AdjustSpaceLimit();
 739 }
 740
 741 void wxTextCtrl::AppendText(const wxString& text)
 742 {
 743     SetInsertionPointEnd();
 744
 745     WriteText(text);
 746
 747 #if wxUSE_RICHEDIT
 748     if ( IsMultiLine() && GetRichVersion() > 1 )
 749     {
 750         // setting the caret to the end and showing it simply doesn't work for
 751         // RichEdit 2.0 -- force it to still do what we want
 752         ::SendMessage(GetHwnd(), EM_LINESCROLL, 0, GetNumberOfLines());
 753     }
 754 #endif // wxUSE_RICHEDIT
 755 }
 756
 757 void wxTextCtrl::Clear()
 758 {
 759     ::SetWindowText(GetHwnd(), wxEmptyString);
 760
 761 #if wxUSE_RICHEDIT
 762     if ( !IsRich() )
 763 #endif // wxUSE_RICHEDIT
 764     {
 765         // rich edit controls send EN_UPDATE from WM_SETTEXT handler themselves
 766         // but the normal ones don't -- make Clear() behaviour consistent by
 767         // always sending this event
 768
 769         // Windows already sends an update event for single-line
 770         // controls.
 771         if ( m_windowStyle & wxTE_MULTILINE )
 772             SendUpdateEvent();
 773     }
 774 }
 775
 776 #ifdef __WIN32__
 777
 778 bool wxTextCtrl::EmulateKeyPress(const wxKeyEvent& event)
 779 {
 780     SetFocus();
 781
 782     size_t lenOld = GetValue().length();
 783
 784     wxUint32 code = event.GetRawKeyCode();
 785     ::keybd_event(code, 0, 0 /* key press */, 0);
 786     ::keybd_event(code, 0, KEYEVENTF_KEYUP, 0);
 787
 788     // assume that any alphanumeric key changes the total number of characters
 789     // in the control - this should work in 99% of cases
 790     return GetValue().length() != lenOld;
 791 }
 792
 793 #endif // __WIN32__
 794
 795 // ----------------------------------------------------------------------------
 796 // Clipboard operations
 797 // ----------------------------------------------------------------------------
 798
 799 void wxTextCtrl::Copy()
 800 {
 801     if (CanCopy())
 802     {
 803         ::SendMessage(GetHwnd(), WM_COPY, 0, 0L);
 804     }
 805 }
 806
 807 void wxTextCtrl::Cut()
 808 {
 809     if (CanCut())
 810     {
 811         ::SendMessage(GetHwnd(), WM_CUT, 0, 0L);
 812     }
 813 }
 814
 815 void wxTextCtrl::Paste()
 816 {
 817     if (CanPaste())
 818     {
 819         ::SendMessage(GetHwnd(), WM_PASTE, 0, 0L);
 820     }
 821 }
 822
 823 bool wxTextCtrl::HasSelection() const
 824 {
 825     long from, to;
 826     GetSelection(&from, &to);
 827     return from != to;
 828 }
 829
 830 bool wxTextCtrl::CanCopy() const
 831 {
 832     // Can copy if there's a selection
 833     return HasSelection();
 834 }
 835
 836 bool wxTextCtrl::CanCut() const
 837 {
 838     return CanCopy() && IsEditable();
 839 }
 840
 841 bool wxTextCtrl::CanPaste() const
 842 {
 843     if ( !IsEditable() )
 844         return FALSE;
 845
 846 #if wxUSE_RICHEDIT
 847     if ( IsRich() )
 848     {
 849         UINT cf = 0; // 0 == any format
 850
 851         return ::SendMessage(GetHwnd(), EM_CANPASTE, cf, 0) != 0;
 852     }
 853 #endif // wxUSE_RICHEDIT
 854
 855     // Standard edit control: check for straight text on clipboard
 856     if ( !::OpenClipboard(GetHwndOf(wxTheApp->GetTopWindow())) )
 857         return FALSE;
 858
 859     bool isTextAvailable = ::IsClipboardFormatAvailable(CF_TEXT) != 0;
 860     ::CloseClipboard();
 861
 862     return isTextAvailable;
 863 }
 864
 865 // ----------------------------------------------------------------------------
 866 // Accessors
 867 // ----------------------------------------------------------------------------
 868
 869 void wxTextCtrl::SetEditable(bool editable)
 870 {
 871     HWND hWnd = GetHwnd();
 872     SendMessage(hWnd, EM_SETREADONLY, (WPARAM)!editable, (LPARAM)0L);
 873 }
 874
 875 void wxTextCtrl::SetInsertionPoint(long pos)
 876 {
 877     DoSetSelection(pos, pos);
 878 }
 879
 880 void wxTextCtrl::SetInsertionPointEnd()
 881 {
 882     // we must not do anything if the caret is already there because calling
 883     // SetInsertionPoint() thaws the controls if Freeze() had been called even
 884     // if it doesn't actually move the caret anywhere and so the simple fact of
 885     // doing it results in horrible flicker when appending big amounts of text
 886     // to the control in a few chunks (see DoAddText() test in the text sample)
 887     if ( GetInsertionPoint() == GetLastPosition() )
 888         return;
 889
 890     long pos;
 891
 892 #if wxUSE_RICHEDIT
 893     if ( m_verRichEdit == 1 )
 894     {
 895         // we don't have to waste time calling GetLastPosition() in this case
 896         pos = -1;
 897     }
 898     else // !RichEdit 1.0
 899 #endif // wxUSE_RICHEDIT
 900     {
 901         pos = GetLastPosition();
 902     }
 903
 904     SetInsertionPoint(pos);
 905 }
 906
 907 long wxTextCtrl::GetInsertionPoint() const
 908 {
 909 #if wxUSE_RICHEDIT
 910     if ( IsRich() )
 911     {
 912         CHARRANGE range;
 913         range.cpMin = 0;
 914         range.cpMax = 0;
 915         SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
 916         return range.cpMin;
 917     }
 918 #endif // wxUSE_RICHEDIT
 919
 920     DWORD Pos = (DWORD)SendMessage(GetHwnd(), EM_GETSEL, 0, 0L);
 921     return Pos & 0xFFFF;
 922 }
 923
 924 long wxTextCtrl::GetLastPosition() const
 925 {
 926     int numLines = GetNumberOfLines();
 927     long posStartLastLine = XYToPosition(0, numLines - 1);
 928
 929     long lenLastLine = GetLengthOfLineContainingPos(posStartLastLine);
 930
 931     return posStartLastLine + lenLastLine;
 932 }
 933
 934 // If the return values from and to are the same, there is no
 935 // selection.
 936 void wxTextCtrl::GetSelection(long* from, long* to) const
 937 {
 938 #if wxUSE_RICHEDIT
 939     if ( IsRich() )
 940     {
 941         CHARRANGE charRange;
 942         ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &charRange);
 943
 944         *from = charRange.cpMin;
 945         *to = charRange.cpMax;
 946     }
 947     else
 948 #endif // !wxUSE_RICHEDIT
 949     {
 950         DWORD dwStart, dwEnd;
 951         ::SendMessage(GetHwnd(), EM_GETSEL, (WPARAM)&dwStart, (LPARAM)&dwEnd);
 952
 953         *from = dwStart;
 954         *to = dwEnd;
 955     }
 956 }
 957
 958 bool wxTextCtrl::IsEditable() const
 959 {
 960     // strangely enough, we may be called before the control is created: our
 961     // own Create() calls MSWGetStyle() which calls AcceptsFocus() which calls
 962     // us
 963     if ( !m_hWnd )
 964         return TRUE;
 965
 966     long style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
 967
 968     return (style & ES_READONLY) == 0;
 969 }
 970
 971 // ----------------------------------------------------------------------------
 972 // selection
 973 // ----------------------------------------------------------------------------
 974
 975 void wxTextCtrl::SetSelection(long from, long to)
 976 {
 977     // if from and to are both -1, it means (in wxWindows) that all text should
 978     // be selected - translate into Windows convention
 979     if ( (from == -1) && (to == -1) )
 980     {
 981         from = 0;
 982         to = -1;
 983     }
 984
 985     DoSetSelection(from, to);
 986 }
 987
 988 void wxTextCtrl::DoSetSelection(long from, long to, bool scrollCaret)
 989 {
 990     HWND hWnd = GetHwnd();
 991
 992 #ifdef __WIN32__
 993 #if wxUSE_RICHEDIT
 994     if ( IsRich() )
 995     {
 996         CHARRANGE range;
 997         range.cpMin = from;
 998         range.cpMax = to;
 999         SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM) &range);
1000     }
1001     else
1002 #endif // wxUSE_RICHEDIT
1003     {
1004         SendMessage(hWnd, EM_SETSEL, (WPARAM)from, (LPARAM)to);
1005     }
1006
1007     if ( scrollCaret )
1008     {
1009 #if wxUSE_RICHEDIT
1010         // richedit 3.0 (i.e. the version living in riched20.dll distributed
1011         // with Windows 2000 and beyond) doesn't honour EM_SCROLLCARET when
1012         // emulating richedit 2.0 unless the control has focus or ECO_NOHIDESEL
1013         // option is set (but it does work ok in richedit 1.0 mode...)
1014         //
1015         // so to make it work we either need to give focus to it here which
1016         // will probably create many problems (dummy focus events; window
1017         // containing the text control being brought to foreground
1018         // unexpectedly; ...) or to temporarily set ECO_NOHIDESEL which may
1019         // create other problems too -- and in fact it does because if we turn
1020         // on/off this style while appending the text to the control, the
1021         // vertical scrollbar never appears in it even if we append tons of
1022         // text and to work around this the only solution I found was to use
1023         // ES_DISABLENOSCROLL
1024         //
1025         // this is very ugly but I don't see any other way to make this work
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 #endif // wxUSE_RICHEDIT
1036
1037         SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
1038
1039 #if wxUSE_RICHEDIT
1040         // restore ECO_NOHIDESEL if we changed it
1041         if ( GetRichVersion() > 1 && !HasFlag(wxTE_NOHIDESEL) )
1042         {
1043             ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1044                           ECOOP_AND, ~ECO_NOHIDESEL);
1045         }
1046 #endif // wxUSE_RICHEDIT
1047     }
1048 #else // Win16
1049     // WPARAM is 0: selection is scrolled into view
1050     SendMessage(hWnd, EM_SETSEL, (WPARAM)0, (LPARAM)MAKELONG(from, to));
1051 #endif // Win32/16
1052 }
1053
1054 // ----------------------------------------------------------------------------
1055 // Editing
1056 // ----------------------------------------------------------------------------
1057
1058 void wxTextCtrl::Replace(long from, long to, const wxString& value)
1059 {
1060     // Set selection and remove it
1061     DoSetSelection(from, to, FALSE /* don't scroll caret into view */);
1062
1063     SendMessage(GetHwnd(), EM_REPLACESEL,
1064 #ifdef __WIN32__
1065                 TRUE,
1066 #else
1067                 FALSE,
1068 #endif
1069                 (LPARAM)value.c_str());
1070 }
1071
1072 void wxTextCtrl::Remove(long from, long to)
1073 {
1074     Replace(from, to, wxEmptyString);
1075 }
1076
1077 bool wxTextCtrl::LoadFile(const wxString& file)
1078 {
1079     if ( wxTextCtrlBase::LoadFile(file) )
1080     {
1081         // update the size limit if needed
1082         AdjustSpaceLimit();
1083
1084         return TRUE;
1085     }
1086
1087     return FALSE;
1088 }
1089
1090 bool wxTextCtrl::IsModified() const
1091 {
1092     return SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0;
1093 }
1094
1095 // Makes 'unmodified'
1096 void wxTextCtrl::DiscardEdits()
1097 {
1098     SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0L);
1099 }
1100
1101 int wxTextCtrl::GetNumberOfLines() const
1102 {
1103     return (int)SendMessage(GetHwnd(), EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0);
1104 }
1105
1106 long wxTextCtrl::XYToPosition(long x, long y) const
1107 {
1108     // This gets the char index for the _beginning_ of this line
1109     long charIndex = SendMessage(GetHwnd(), EM_LINEINDEX, (WPARAM)y, (LPARAM)0);
1110
1111     return charIndex + x;
1112 }
1113
1114 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
1115 {
1116     HWND hWnd = GetHwnd();
1117
1118     // This gets the line number containing the character
1119     long lineNo;
1120 #if wxUSE_RICHEDIT
1121     if ( IsRich() )
1122     {
1123         lineNo = SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, (LPARAM)pos);
1124     }
1125     else
1126 #endif // wxUSE_RICHEDIT
1127     {
1128         lineNo = SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, 0);
1129     }
1130
1131     if ( lineNo == -1 )
1132     {
1133         // no such line
1134         return FALSE;
1135     }
1136
1137     // This gets the char index for the _beginning_ of this line
1138     long charIndex = SendMessage(hWnd, EM_LINEINDEX, (WPARAM)lineNo, (LPARAM)0);
1139     if ( charIndex == -1 )
1140     {
1141         return FALSE;
1142     }
1143
1144     // The X position must therefore be the different between pos and charIndex
1145     if ( x )
1146         *x = pos - charIndex;
1147     if ( y )
1148         *y = lineNo;
1149
1150     return TRUE;
1151 }
1152
1153 void wxTextCtrl::ShowPosition(long pos)
1154 {
1155     HWND hWnd = GetHwnd();
1156
1157     // To scroll to a position, we pass the number of lines and characters
1158     // to scroll *by*. This means that we need to:
1159     // (1) Find the line position of the current line.
1160     // (2) Find the line position of pos.
1161     // (3) Scroll by (pos - current).
1162     // For now, ignore the horizontal scrolling.
1163
1164     // Is this where scrolling is relative to - the line containing the caret?
1165     // Or is the first visible line??? Try first visible line.
1166 //    int currentLineLineNo1 = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)-1, (LPARAM)0L);
1167
1168     int currentLineLineNo = (int)SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, (WPARAM)0, (LPARAM)0L);
1169
1170     int specifiedLineLineNo = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, (LPARAM)0L);
1171
1172     int linesToScroll = specifiedLineLineNo - currentLineLineNo;
1173
1174     if (linesToScroll != 0)
1175       (void)SendMessage(hWnd, EM_LINESCROLL, (WPARAM)0, (LPARAM)linesToScroll);
1176 }
1177
1178 long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const
1179 {
1180     return ::SendMessage(GetHwnd(), EM_LINELENGTH, (WPARAM)pos, 0);
1181 }
1182
1183 int wxTextCtrl::GetLineLength(long lineNo) const
1184 {
1185     long pos = XYToPosition(0, lineNo);
1186
1187     return GetLengthOfLineContainingPos(pos);
1188 }
1189
1190 wxString wxTextCtrl::GetLineText(long lineNo) const
1191 {
1192     size_t len = (size_t)GetLineLength(lineNo) + 1;
1193
1194     // there must be at least enough place for the length WORD in the
1195     // buffer
1196     len += sizeof(WORD);
1197
1198     wxString str;
1199     wxChar *buf = str.GetWriteBuf(len);
1200
1201     *(WORD *)buf = (WORD)len;
1202     len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf);
1203     buf[len] = 0;
1204
1205     str.UngetWriteBuf(len);
1206
1207     return str;
1208 }
1209
1210 void wxTextCtrl::SetMaxLength(unsigned long len)
1211 {
1212     ::SendMessage(GetHwnd(), EM_LIMITTEXT, len, 0);
1213 }
1214
1215 // ----------------------------------------------------------------------------
1216 // Undo/redo
1217 // ----------------------------------------------------------------------------
1218
1219 void wxTextCtrl::Undo()
1220 {
1221     if (CanUndo())
1222     {
1223         ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1224     }
1225 }
1226
1227 void wxTextCtrl::Redo()
1228 {
1229     if (CanRedo())
1230     {
1231         // Same as Undo, since Undo undoes the undo, i.e. a redo.
1232         ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1233     }
1234 }
1235
1236 bool wxTextCtrl::CanUndo() const
1237 {
1238     return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1239 }
1240
1241 bool wxTextCtrl::CanRedo() const
1242 {
1243     return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1244 }
1245
1246 // ----------------------------------------------------------------------------
1247 // caret handling (Windows only)
1248 // ----------------------------------------------------------------------------
1249
1250 bool wxTextCtrl::ShowNativeCaret(bool show)
1251 {
1252     if ( show != m_isNativeCaretShown )
1253     {
1254         if ( !(show ? ::ShowCaret(GetHwnd()) : ::HideCaret(GetHwnd())) )
1255         {
1256             // not an error, may simply indicate that it's not shown/hidden
1257             // yet (i.e. it had been hidden/showh 2 times before)
1258             return false;
1259         }
1260
1261         m_isNativeCaretShown = show;
1262     }
1263
1264     return true;
1265 }
1266
1267 // ----------------------------------------------------------------------------
1268 // implemenation details
1269 // ----------------------------------------------------------------------------
1270
1271 void wxTextCtrl::Command(wxCommandEvent & event)
1272 {
1273     SetValue(event.GetString());
1274     ProcessCommand (event);
1275 }
1276
1277 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
1278 {
1279     // By default, load the first file into the text window.
1280     if (event.GetNumberOfFiles() > 0)
1281     {
1282         LoadFile(event.GetFiles()[0]);
1283     }
1284 }
1285
1286 // ----------------------------------------------------------------------------
1287 // kbd input processing
1288 // ----------------------------------------------------------------------------
1289
1290 bool wxTextCtrl::MSWShouldPreProcessMessage(WXMSG* pMsg)
1291 {
1292     MSG *msg = (MSG *)pMsg;
1293
1294     // check for our special keys here: if we don't do it and the parent frame
1295     // uses them as accelerators, they wouldn't work at all, so we disable
1296     // usual preprocessing for them
1297     if ( msg->message == WM_KEYDOWN )
1298     {
1299         WORD vkey = (WORD) msg->wParam;
1300         if ( (HIWORD(msg->lParam) & KF_ALTDOWN) == KF_ALTDOWN )
1301         {
1302             if ( vkey == VK_BACK )
1303                 return FALSE;
1304         }
1305         else // no Alt
1306         {
1307             // we want to process some Ctrl-foo and Shift-bar but no key
1308             // combinations without either Ctrl or Shift nor with both of them
1309             // pressed
1310             const int ctrl = wxIsCtrlDown(),
1311                       shift = wxIsShiftDown();
1312             switch ( ctrl + shift )
1313             {
1314                 default:
1315                     wxFAIL_MSG( _T("how many modifiers have we got?") );
1316                     // fall through
1317
1318                 case 0:
1319                 case 2:
1320                     break;
1321
1322                 case 1:
1323                     // either Ctrl or Shift pressed
1324                     if ( ctrl )
1325                     {
1326                         switch ( vkey )
1327                         {
1328                             case 'C':
1329                             case 'V':
1330                             case 'X':
1331                             case VK_INSERT:
1332                             case VK_DELETE:
1333                             case VK_HOME:
1334                             case VK_END:
1335                                 return FALSE;
1336                         }
1337                     }
1338                     else // Shift is pressed
1339                     {
1340                         if ( vkey == VK_INSERT || vkey == VK_DELETE )
1341                             return FALSE;
1342                     }
1343             }
1344         }
1345     }
1346
1347     return wxControl::MSWShouldPreProcessMessage(pMsg);
1348 }
1349
1350 void wxTextCtrl::OnChar(wxKeyEvent& event)
1351 {
1352     switch ( event.GetKeyCode() )
1353     {
1354         case WXK_RETURN:
1355             if ( !(m_windowStyle & wxTE_MULTILINE) )
1356             {
1357                 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1358                 InitCommandEvent(event);
1359                 event.SetString(GetValue());
1360                 if ( GetEventHandler()->ProcessEvent(event) )
1361                     return;
1362             }
1363             //else: multiline controls need Enter for themselves
1364
1365             break;
1366
1367         case WXK_TAB:
1368             // always produce navigation event - even if we process TAB
1369             // ourselves the fact that we got here means that the user code
1370             // decided to skip processing of this TAB - probably to let it
1371             // do its default job.
1372             {
1373                 wxNavigationKeyEvent eventNav;
1374                 eventNav.SetDirection(!event.ShiftDown());
1375                 eventNav.SetWindowChange(event.ControlDown());
1376                 eventNav.SetEventObject(this);
1377
1378                 if ( GetParent()->GetEventHandler()->ProcessEvent(eventNav) )
1379                     return;
1380             }
1381             break;
1382     }
1383
1384     // no, we didn't process it
1385     event.Skip();
1386 }
1387
1388 long wxTextCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
1389 {
1390     long lRc = wxTextCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
1391
1392     if ( nMsg == WM_GETDLGCODE )
1393     {
1394         // we always want the chars and the arrows: the arrows for navigation
1395         // and the chars because we want Ctrl-C to work even in a read only
1396         // control
1397         long lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
1398
1399         if ( IsEditable() )
1400         {
1401             // we may have several different cases:
1402             // 1. normal case: both TAB and ENTER are used for dlg navigation
1403             // 2. ctrl which wants TAB for itself: ENTER is used to pass to the
1404             //    next control in the dialog
1405             // 3. ctrl which wants ENTER for itself: TAB is used for dialog
1406             //    navigation
1407             // 4. ctrl which wants both TAB and ENTER: Ctrl-ENTER is used to go
1408             //    to the next control
1409
1410             // the multiline edit control should always get <Return> for itself
1411             if ( HasFlag(wxTE_PROCESS_ENTER) || HasFlag(wxTE_MULTILINE) )
1412                 lDlgCode |= DLGC_WANTMESSAGE;
1413
1414             if ( HasFlag(wxTE_PROCESS_TAB) )
1415                 lDlgCode |= DLGC_WANTTAB;
1416
1417             lRc |= lDlgCode;
1418         }
1419         else // !editable
1420         {
1421             // NB: use "=", not "|=" as the base class version returns the
1422             //     same flags is this state as usual (i.e. including
1423             //     DLGC_WANTMESSAGE). This is strange (how does it work in the
1424             //     native Win32 apps?) but for now live with it.
1425             lRc = lDlgCode;
1426         }
1427     }
1428
1429     return lRc;
1430 }
1431
1432 // ----------------------------------------------------------------------------
1433 // text control event processing
1434 // ----------------------------------------------------------------------------
1435
1436 bool wxTextCtrl::SendUpdateEvent()
1437 {
1438     // is event reporting suspended?
1439     if ( m_suppressNextUpdate )
1440     {
1441         // do process the next one
1442         m_suppressNextUpdate = FALSE;
1443
1444         return FALSE;
1445     }
1446
1447     wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, GetId());
1448     InitCommandEvent(event);
1449     event.SetString(GetValue());
1450
1451     return ProcessCommand(event);
1452 }
1453
1454 bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
1455 {
1456     switch ( param )
1457     {
1458         case EN_SETFOCUS:
1459         case EN_KILLFOCUS:
1460             {
1461                 wxFocusEvent event(param == EN_KILLFOCUS ? wxEVT_KILL_FOCUS
1462                                                          : wxEVT_SET_FOCUS,
1463                                    m_windowId);
1464                 event.SetEventObject(this);
1465                 GetEventHandler()->ProcessEvent(event);
1466             }
1467             break;
1468
1469         case EN_CHANGE:
1470             SendUpdateEvent();
1471             break;
1472
1473         case EN_MAXTEXT:
1474             // the text size limit has been hit -- try to increase it
1475             if ( !AdjustSpaceLimit() )
1476             {
1477                 wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, m_windowId);
1478                 InitCommandEvent(event);
1479                 event.SetString(GetValue());
1480                 ProcessCommand(event);
1481             }
1482             break;
1483
1484             // the other edit notification messages are not processed
1485         default:
1486             return FALSE;
1487     }
1488
1489     // processed
1490     return TRUE;
1491 }
1492
1493 WXHBRUSH wxTextCtrl::OnCtlColor(WXHDC pDC, WXHWND WXUNUSED(pWnd), WXUINT WXUNUSED(nCtlColor),
1494 #if wxUSE_CTL3D
1495                                WXUINT message,
1496                                WXWPARAM wParam,
1497                                WXLPARAM lParam
1498 #else
1499                                WXUINT WXUNUSED(message),
1500                                WXWPARAM WXUNUSED(wParam),
1501                                WXLPARAM WXUNUSED(lParam)
1502 #endif
1503     )
1504 {
1505 #if wxUSE_CTL3D
1506     if ( m_useCtl3D )
1507     {
1508         HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
1509         return (WXHBRUSH) hbrush;
1510     }
1511 #endif // wxUSE_CTL3D
1512
1513     HDC hdc = (HDC)pDC;
1514     wxColour colBack = GetBackgroundColour();
1515
1516     if (!IsEnabled() && (GetWindowStyle() & wxTE_MULTILINE) == 0)
1517         colBack = wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE);
1518
1519     ::SetBkColor(hdc, wxColourToRGB(colBack));
1520     ::SetTextColor(hdc, wxColourToRGB(GetForegroundColour()));
1521
1522     wxBrush *brush = wxTheBrushList->FindOrCreateBrush(colBack, wxSOLID);
1523
1524     return (WXHBRUSH)brush->GetResourceHandle();
1525 }
1526
1527 // In WIN16, need to override normal erasing because
1528 // Ctl3D doesn't use the wxWindows background colour.
1529 #ifdef __WIN16__
1530 void wxTextCtrl::OnEraseBackground(wxEraseEvent& event)
1531 {
1532     wxColour col(m_backgroundColour);
1533
1534 #if wxUSE_CTL3D
1535     if (m_useCtl3D)
1536         col = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
1537 #endif
1538
1539     RECT rect;
1540     ::GetClientRect(GetHwnd(), &rect);
1541
1542     COLORREF ref = wxColourToRGB(col);
1543     HBRUSH hBrush = ::CreateSolidBrush(ref);
1544     if ( !hBrush )
1545         wxLogLastError(wxT("CreateSolidBrush"));
1546
1547     HDC hdc = (HDC)event.GetDC()->GetHDC();
1548
1549     int mode = ::SetMapMode(hdc, MM_TEXT);
1550
1551     ::FillRect(hdc, &rect, hBrush);
1552     ::DeleteObject(hBrush);
1553     ::SetMapMode(hdc, mode);
1554
1555 }
1556 #endif // Win16
1557
1558 bool wxTextCtrl::AdjustSpaceLimit()
1559 {
1560 #ifndef __WIN16__
1561     unsigned int limit = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
1562
1563     // HACK: we try to automatically extend the limit for the amount of text
1564     //       to allow (interactively) entering more than 64Kb of text under
1565     //       Win9x but we shouldn't reset the text limit which was previously
1566     //       set explicitly with SetMaxLength()
1567     //
1568     //       we could solve this by storing the limit we set in wxTextCtrl but
1569     //       to save space we prefer to simply test here the actual limit
1570     //       value: we consider that SetMaxLength() can only be called for
1571     //       values < 32Kb
1572     if ( limit < 0x8000 )
1573     {
1574         // we've got more text than limit set by SetMaxLength()
1575         return FALSE;
1576     }
1577
1578     unsigned int len = ::GetWindowTextLength(GetHwnd());
1579     if ( len >= limit )
1580     {
1581         limit = len + 0x8000;    // 32Kb
1582
1583 #if wxUSE_RICHEDIT
1584         if ( IsRich() )
1585         {
1586             // as a nice side effect, this also allows passing limit > 64Kb
1587             ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, limit);
1588         }
1589         else
1590 #endif // wxUSE_RICHEDIT
1591         {
1592             if ( limit > 0xffff )
1593             {
1594                 // this will set it to a platform-dependent maximum (much more
1595                 // than 64Kb under NT)
1596                 limit = 0;
1597             }
1598
1599             ::SendMessage(GetHwnd(), EM_LIMITTEXT, limit, 0);
1600         }
1601     }
1602 #endif // !Win16
1603
1604     // we changed the limit
1605     return TRUE;
1606 }
1607
1608 bool wxTextCtrl::AcceptsFocus() const
1609 {
1610     // we don't want focus if we can't be edited unless we're a multiline
1611     // control because then it might be still nice to get focus from keyboard
1612     // to be able to scroll it without mouse
1613     return (IsEditable() || IsMultiLine()) && wxControl::AcceptsFocus();
1614 }
1615
1616 wxSize wxTextCtrl::DoGetBestSize() const
1617 {
1618     int cx, cy;
1619     wxGetCharSize(GetHWND(), &cx, &cy, &GetFont());
1620
1621     int wText = DEFAULT_ITEM_WIDTH;
1622
1623     int hText = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy);
1624     if ( m_windowStyle & wxTE_MULTILINE )
1625     {
1626         hText *= wxMax(GetNumberOfLines(), 5);
1627     }
1628     //else: for single line control everything is ok
1629
1630     return wxSize(wText, hText);
1631 }
1632
1633 // ----------------------------------------------------------------------------
1634 // standard handlers for standard edit menu events
1635 // ----------------------------------------------------------------------------
1636
1637 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1638 {
1639     Cut();
1640 }
1641
1642 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1643 {
1644     Copy();
1645 }
1646
1647 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1648 {
1649     Paste();
1650 }
1651
1652 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1653 {
1654     Undo();
1655 }
1656
1657 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1658 {
1659     Redo();
1660 }
1661
1662 void wxTextCtrl::OnDelete(wxCommandEvent& event)
1663 {
1664     long from, to;
1665     GetSelection(& from, & to);
1666     if (from != -1 && to != -1)
1667         Remove(from, to);
1668 }
1669
1670 void wxTextCtrl::OnSelectAll(wxCommandEvent& event)
1671 {
1672     SetSelection(-1, -1);
1673 }
1674
1675 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1676 {
1677     event.Enable( CanCut() );
1678 }
1679
1680 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1681 {
1682     event.Enable( CanCopy() );
1683 }
1684
1685 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1686 {
1687     event.Enable( CanPaste() );
1688 }
1689
1690 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1691 {
1692     event.Enable( CanUndo() );
1693 }
1694
1695 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1696 {
1697     event.Enable( CanRedo() );
1698 }
1699
1700 void wxTextCtrl::OnUpdateDelete(wxUpdateUIEvent& event)
1701 {
1702     long from, to;
1703     GetSelection(& from, & to);
1704     event.Enable(from != -1 && to != -1 && from != to && IsEditable()) ;
1705 }
1706
1707 void wxTextCtrl::OnUpdateSelectAll(wxUpdateUIEvent& event)
1708 {
1709     event.Enable(GetLastPosition() > 0);
1710 }
1711
1712 void wxTextCtrl::OnRightClick(wxMouseEvent& event)
1713 {
1714 #if wxUSE_RICHEDIT
1715     if (IsRich())
1716     {
1717         if (!m_privateContextMenu)
1718         {
1719             m_privateContextMenu = new wxMenu;
1720             m_privateContextMenu->Append(wxID_UNDO, _("&Undo"));
1721             m_privateContextMenu->Append(wxID_REDO, _("&Redo"));
1722             m_privateContextMenu->AppendSeparator();
1723             m_privateContextMenu->Append(wxID_CUT, _("Cu&t"));
1724             m_privateContextMenu->Append(wxID_COPY, _("&Copy"));
1725             m_privateContextMenu->Append(wxID_PASTE, _("&Paste"));
1726             m_privateContextMenu->Append(wxID_CLEAR, _("&Delete"));
1727             m_privateContextMenu->AppendSeparator();
1728             m_privateContextMenu->Append(wxID_SELECTALL, _("Select &All"));
1729         }
1730         PopupMenu(m_privateContextMenu, event.GetPosition());
1731         return;
1732     }
1733     else
1734 #endif
1735     event.Skip();
1736 }
1737
1738 void wxTextCtrl::OnSetFocus(wxFocusEvent& event)
1739 {
1740     // be sure the caret remains invisible if the user had hidden it
1741     if ( !m_isNativeCaretShown )
1742     {
1743         ::HideCaret(GetHwnd());
1744     }
1745 }
1746
1747 // the rest of the file only deals with the rich edit controls
1748 #if wxUSE_RICHEDIT
1749
1750 // ----------------------------------------------------------------------------
1751 // EN_LINK processing
1752 // ----------------------------------------------------------------------------
1753
1754 bool wxTextCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
1755 {
1756     NMHDR *hdr = (NMHDR* )lParam;
1757     switch ( hdr->code )
1758     {
1759        case EN_MSGFILTER:
1760             {
1761                 const MSGFILTER *msgf = (MSGFILTER *)lParam;
1762                 UINT msg = msgf->msg;
1763
1764                 // this is a bit crazy but richedit 1.0 sends us all mouse
1765                 // events _except_ WM_LBUTTONUP (don't ask me why) so we have
1766                 // generate the wxWin events for this message manually
1767                 //
1768                 // NB: in fact, this is still not totally correct as it does
1769                 //     send us WM_LBUTTONUP if the selection was cleared by the
1770                 //     last click -- so currently we get 2 events in this case,
1771                 //     but as I don't see any obvious way to check for this I
1772                 //     leave this code in place because it's still better than
1773                 //     not getting left up events at all
1774                 if ( msg == WM_LBUTTONUP )
1775                 {
1776                     WXUINT flags = msgf->wParam;
1777                     int x = GET_X_LPARAM(msgf->lParam),
1778                         y = GET_Y_LPARAM(msgf->lParam);
1779
1780                     HandleMouseEvent(msg, x, y, flags);
1781                 }
1782             }
1783
1784             // return TRUE to process the event (and FALSE to ignore it)
1785             return TRUE;
1786
1787         case EN_LINK:
1788             {
1789                 const ENLINK *enlink = (ENLINK *)hdr;
1790
1791                 switch ( enlink->msg )
1792                 {
1793                     case WM_SETCURSOR:
1794                         // ok, so it is hardcoded - do we really nee to
1795                         // customize it?
1796                         ::SetCursor(GetHcursorOf(wxCursor(wxCURSOR_HAND)));
1797                         *result = TRUE;
1798                         break;
1799
1800                     case WM_MOUSEMOVE:
1801                     case WM_LBUTTONDOWN:
1802                     case WM_LBUTTONUP:
1803                     case WM_LBUTTONDBLCLK:
1804                     case WM_RBUTTONDOWN:
1805                     case WM_RBUTTONUP:
1806                     case WM_RBUTTONDBLCLK:
1807                         // send a mouse event
1808                         {
1809                             static const wxEventType eventsMouse[] =
1810                             {
1811                                 wxEVT_MOTION,
1812                                 wxEVT_LEFT_DOWN,
1813                                 wxEVT_LEFT_UP,
1814                                 wxEVT_LEFT_DCLICK,
1815                                 wxEVT_RIGHT_DOWN,
1816                                 wxEVT_RIGHT_UP,
1817                                 wxEVT_RIGHT_DCLICK,
1818                             };
1819
1820                             // the event ids are consecutive
1821                             wxMouseEvent
1822                                 evtMouse(eventsMouse[enlink->msg - WM_MOUSEMOVE]);
1823
1824                             InitMouseEvent(evtMouse,
1825                                            GET_X_LPARAM(enlink->lParam),
1826                                            GET_Y_LPARAM(enlink->lParam),
1827                                            enlink->wParam);
1828
1829                             wxTextUrlEvent event(m_windowId, evtMouse,
1830                                                  enlink->chrg.cpMin,
1831                                                  enlink->chrg.cpMax);
1832
1833                             InitCommandEvent(event);
1834
1835                             *result = ProcessCommand(event);
1836                         }
1837                         break;
1838                 }
1839             }
1840             return TRUE;
1841     }
1842
1843     // not processed, leave it to the base class
1844     return wxTextCtrlBase::MSWOnNotify(idCtrl, lParam, result);
1845 }
1846
1847 // ----------------------------------------------------------------------------
1848 // colour setting for the rich edit controls
1849 // ----------------------------------------------------------------------------
1850
1851 bool wxTextCtrl::SetBackgroundColour(const wxColour& colour)
1852 {
1853     if ( !wxTextCtrlBase::SetBackgroundColour(colour) )
1854     {
1855         // colour didn't really change
1856         return FALSE;
1857     }
1858
1859     if ( IsRich() )
1860     {
1861         // rich edit doesn't use WM_CTLCOLOR, hence we need to send
1862         // EM_SETBKGNDCOLOR additionally
1863         ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour));
1864     }
1865
1866     return TRUE;
1867 }
1868
1869 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1870 {
1871     if ( !wxTextCtrlBase::SetForegroundColour(colour) )
1872     {
1873         // colour didn't really change
1874         return FALSE;
1875     }
1876
1877     if ( IsRich() )
1878     {
1879         // change the colour of everything
1880         CHARFORMAT cf;
1881         wxZeroMemory(cf);
1882         cf.cbSize = sizeof(cf);
1883         cf.dwMask = CFM_COLOR;
1884         cf.crTextColor = wxColourToRGB(colour);
1885         ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf);
1886     }
1887
1888     return TRUE;
1889 }
1890
1891 // ----------------------------------------------------------------------------
1892 // styling support for rich edit controls
1893 // ----------------------------------------------------------------------------
1894
1895 #if wxUSE_RICHEDIT
1896
1897 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
1898 {
1899     if ( !IsRich() )
1900     {
1901         // can't do it with normal text control
1902         return FALSE;
1903     }
1904
1905     // the richedit 1.0 doesn't handle setting background colour, so don't
1906     // even try to do anything if it's the only thing we want to change
1907     if ( m_verRichEdit == 1 && !style.HasFont() && !style.HasTextColour() &&
1908         !style.HasLeftIndent() && !style.HasRightIndent() && !style.HasAlignment() &&
1909         !style.HasTabs() )
1910     {
1911         // nothing to do: return TRUE if there was really nothing to do and
1912         // FALSE if we failed to set bg colour
1913         return !style.HasBackgroundColour();
1914     }
1915
1916     // order the range if needed
1917     if ( start > end )
1918     {
1919         long tmp = start;
1920         start = end;
1921         end = tmp;
1922     }
1923
1924     // we can only change the format of the selection, so select the range we
1925     // want and restore the old selection later
1926     long startOld, endOld;
1927     GetSelection(&startOld, &endOld);
1928
1929     // but do we really have to change the selection?
1930     bool changeSel = start != startOld || end != endOld;
1931
1932     if ( changeSel )
1933     {
1934         DoSetSelection(start, end, FALSE /* don't scroll caret into view */);
1935     }
1936
1937     // initialize CHARFORMAT struct
1938 #if wxUSE_RICHEDIT2
1939     CHARFORMAT2 cf;
1940 #else
1941     CHARFORMAT cf;
1942 #endif
1943
1944     wxZeroMemory(cf);
1945
1946     // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
1947     // CHARFORMAT in that case
1948 #if wxUSE_RICHEDIT2
1949     if ( m_verRichEdit == 1 )
1950     {
1951         // this is the only thing the control is going to grok
1952         cf.cbSize = sizeof(CHARFORMAT);
1953     }
1954     else
1955 #endif
1956     {
1957         // CHARFORMAT or CHARFORMAT2
1958         cf.cbSize = sizeof(cf);
1959     }
1960
1961     if ( style.HasFont() )
1962     {
1963         // VZ: CFM_CHARSET doesn't seem to do anything at all in RichEdit 2.0
1964         //     but using it doesn't seem to hurt neither so leaving it for now
1965
1966         cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET |
1967                      CFM_ITALIC | CFM_BOLD | CFM_UNDERLINE;
1968
1969         // fill in data from LOGFONT but recalculate lfHeight because we need
1970         // the real height in twips and not the negative number which
1971         // wxFillLogFont() returns (this is correct in general and works with
1972         // the Windows font mapper, but not here)
1973         LOGFONT lf;
1974         wxFillLogFont(&lf, &style.GetFont());
1975         cf.yHeight = 20*style.GetFont().GetPointSize(); // 1 pt = 20 twips
1976         cf.bCharSet = lf.lfCharSet;
1977         cf.bPitchAndFamily = lf.lfPitchAndFamily;
1978         wxStrncpy( cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName) );
1979
1980         // also deal with underline/italic/bold attributes: note that we must
1981         // always set CFM_ITALIC &c bits in dwMask, even if we don't set the
1982         // style to allow clearing it
1983         if ( lf.lfItalic )
1984         {
1985             cf.dwEffects |= CFE_ITALIC;
1986         }
1987
1988         if ( lf.lfWeight == FW_BOLD )
1989         {
1990             cf.dwEffects |= CFE_BOLD;
1991         }
1992
1993         if ( lf.lfUnderline )
1994         {
1995             cf.dwEffects |= CFE_UNDERLINE;
1996         }
1997
1998         // strikeout fonts are not supported by wxWindows
1999     }
2000
2001     if ( style.HasTextColour() )
2002     {
2003         cf.dwMask |= CFM_COLOR;
2004         cf.crTextColor = wxColourToRGB(style.GetTextColour());
2005     }
2006
2007 #if wxUSE_RICHEDIT2
2008     if ( m_verRichEdit != 1 && style.HasBackgroundColour() )
2009     {
2010         cf.dwMask |= CFM_BACKCOLOR;
2011         cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
2012     }
2013 #endif // wxUSE_RICHEDIT2
2014
2015     // do format the selection
2016     bool ok = ::SendMessage(GetHwnd(), EM_SETCHARFORMAT,
2017                             SCF_SELECTION, (LPARAM)&cf) != 0;
2018     if ( !ok )
2019     {
2020         wxLogDebug(_T("SendMessage(EM_SETCHARFORMAT, SCF_SELECTION) failed"));
2021     }
2022
2023     // now do the paragraph formatting
2024     PARAFORMAT2 pf;
2025     wxZeroMemory(pf);
2026     // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2027     // PARAFORMAT in that case
2028 #if wxUSE_RICHEDIT2
2029     if ( m_verRichEdit == 1 )
2030     {
2031         // this is the only thing the control is going to grok
2032         pf.cbSize = sizeof(PARAFORMAT);
2033     }
2034     else
2035 #endif
2036     {
2037         // PARAFORMAT or PARAFORMAT2
2038         pf.cbSize = sizeof(pf);
2039     }
2040
2041     if (style.HasAlignment())
2042     {
2043         pf.dwMask |= PFM_ALIGNMENT;
2044         if (style.GetAlignment() == wxTEXT_ALIGNMENT_RIGHT)
2045             pf.wAlignment = PFA_RIGHT;
2046         else if (style.GetAlignment() == wxTEXT_ALIGNMENT_CENTRE)
2047             pf.wAlignment = PFA_CENTER;
2048         else if (style.GetAlignment() == wxTEXT_ALIGNMENT_JUSTIFIED)
2049             pf.wAlignment = PFA_JUSTIFY;
2050         else
2051             pf.wAlignment = PFA_LEFT;
2052     }
2053
2054     if (style.HasLeftIndent())
2055     {
2056         pf.dwMask |= PFM_STARTINDENT;
2057
2058         // Convert from 1/10 mm to TWIPS
2059         pf.dxStartIndent = (int) (((double) style.GetLeftIndent()) * mm2twips / 10.0) ;
2060
2061         // TODO: do we need to specify dxOffset?
2062     }
2063
2064     if (style.HasRightIndent())
2065     {
2066         pf.dwMask |= PFM_RIGHTINDENT;
2067
2068         // Convert from 1/10 mm to TWIPS
2069         pf.dxRightIndent = (int) (((double) style.GetRightIndent()) * mm2twips / 10.0) ;
2070     }
2071
2072     if (style.HasTabs())
2073     {
2074         pf.dwMask |= PFM_TABSTOPS;
2075
2076         const wxArrayInt& tabs = style.GetTabs();
2077
2078         pf.cTabCount = wxMin(tabs.GetCount(), MAX_TAB_STOPS);
2079         size_t i;
2080         for (i = 0; i < (size_t) pf.cTabCount; i++)
2081         {
2082             // Convert from 1/10 mm to TWIPS
2083             pf.rgxTabs[i] = (int) (((double) tabs[i]) * mm2twips / 10.0) ;
2084         }
2085     }
2086
2087     if (pf.dwMask != 0)
2088     {
2089         // do format the selection
2090         bool ok = ::SendMessage(GetHwnd(), EM_SETPARAFORMAT,
2091             0, (LPARAM) &pf) != 0;
2092         if ( !ok )
2093         {
2094             wxLogDebug(_T("SendMessage(EM_SETPARAFORMAT, 0) failed"));
2095         }
2096     }
2097
2098     if ( changeSel )
2099     {
2100         // restore the original selection
2101         DoSetSelection(startOld, endOld, FALSE);
2102     }
2103
2104     return ok;
2105 }
2106
2107 bool wxTextCtrl::SetDefaultStyle(const wxTextAttr& style)
2108 {
2109     if ( !wxTextCtrlBase::SetDefaultStyle(style) )
2110         return FALSE;
2111
2112     // we have to do this or the style wouldn't apply for the text typed by the
2113     // user
2114     long posLast = GetLastPosition();
2115     SetStyle(posLast, posLast, m_defaultStyle);
2116
2117     return TRUE;
2118 }
2119
2120 bool wxTextCtrl::GetStyle(long position, wxTextAttr& style)
2121 {
2122     if ( !IsRich() )
2123     {
2124         // can't do it with normal text control
2125         return FALSE;
2126     }
2127
2128     // initialize CHARFORMAT struct
2129 #if wxUSE_RICHEDIT2
2130     CHARFORMAT2 cf;
2131 #else
2132     CHARFORMAT cf;
2133 #endif
2134
2135     wxZeroMemory(cf);
2136
2137     // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2138     // CHARFORMAT in that case
2139 #if wxUSE_RICHEDIT2
2140     if ( m_verRichEdit == 1 )
2141     {
2142         // this is the only thing the control is going to grok
2143         cf.cbSize = sizeof(CHARFORMAT);
2144     }
2145     else
2146 #endif
2147     {
2148         // CHARFORMAT or CHARFORMAT2
2149         cf.cbSize = sizeof(cf);
2150     }
2151     // we can only change the format of the selection, so select the range we
2152     // want and restore the old selection later
2153     long startOld, endOld;
2154     GetSelection(&startOld, &endOld);
2155
2156     // but do we really have to change the selection?
2157     bool changeSel = position != startOld || position != endOld;
2158
2159     if ( changeSel )
2160     {
2161         DoSetSelection(position, position, FALSE /* don't scroll caret into view */);
2162     }
2163
2164     // get the selection formatting
2165     (void) ::SendMessage(GetHwnd(), EM_GETCHARFORMAT,
2166                             SCF_SELECTION, (LPARAM)&cf) ;
2167
2168     LOGFONT lf;
2169     lf.lfHeight = cf.yHeight;
2170     lf.lfWidth = 0;
2171     lf.lfCharSet = ANSI_CHARSET; // FIXME: how to get correct charset?
2172     lf.lfClipPrecision = 0;
2173     lf.lfEscapement = 0;
2174     wxStrcpy(lf.lfFaceName, cf.szFaceName);
2175     if (cf.dwEffects & CFE_ITALIC)
2176         lf.lfItalic = TRUE;
2177     lf.lfOrientation = 0;
2178     lf.lfPitchAndFamily = cf.bPitchAndFamily;
2179     lf.lfQuality = 0;
2180     if (cf.dwEffects & CFE_STRIKEOUT)
2181         lf.lfStrikeOut = TRUE;
2182     if (cf.dwEffects & CFE_UNDERLINE)
2183         lf.lfUnderline = TRUE;
2184     if (cf.dwEffects & CFE_BOLD)
2185         lf.lfWeight = FW_BOLD;
2186
2187     wxFont font = wxCreateFontFromLogFont(& lf);
2188     if (font.Ok())
2189     {
2190         style.SetFont(font);
2191     }
2192     style.SetTextColour(wxColour(cf.crTextColor));
2193
2194 #if wxUSE_RICHEDIT2
2195     if ( m_verRichEdit != 1 )
2196     {
2197         // cf.dwMask |= CFM_BACKCOLOR;
2198         style.SetBackgroundColour(wxColour(cf.crBackColor));
2199     }
2200 #endif // wxUSE_RICHEDIT2
2201
2202     // now get the paragraph formatting
2203     PARAFORMAT2 pf;
2204     wxZeroMemory(pf);
2205     // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2206     // PARAFORMAT in that case
2207 #if wxUSE_RICHEDIT2
2208     if ( m_verRichEdit == 1 )
2209     {
2210         // this is the only thing the control is going to grok
2211         pf.cbSize = sizeof(PARAFORMAT);
2212     }
2213     else
2214 #endif
2215     {
2216         // PARAFORMAT or PARAFORMAT2
2217         pf.cbSize = sizeof(pf);
2218     }
2219
2220     // do format the selection
2221     (void) ::SendMessage(GetHwnd(), EM_GETPARAFORMAT, 0, (LPARAM) &pf) ;
2222
2223     style.SetLeftIndent( (int) ((double) pf.dxStartIndent * twips2mm * 10.0) );
2224     style.SetRightIndent( (int) ((double) pf.dxRightIndent * twips2mm * 10.0) );
2225
2226     if (pf.wAlignment == PFA_CENTER)
2227         style.SetAlignment(wxTEXT_ALIGNMENT_CENTRE);
2228     else if (pf.wAlignment == PFA_RIGHT)
2229         style.SetAlignment(wxTEXT_ALIGNMENT_RIGHT);
2230     else if (pf.wAlignment == PFA_JUSTIFY)
2231         style.SetAlignment(wxTEXT_ALIGNMENT_JUSTIFIED);
2232     else
2233         style.SetAlignment(wxTEXT_ALIGNMENT_LEFT);
2234
2235     wxArrayInt tabStops;
2236     size_t i;
2237     for (i = 0; i < (size_t) pf.cTabCount; i++)
2238     {
2239         tabStops[i] = (int) ((double) (pf.rgxTabs[i] & 0xFFFF) * twips2mm * 10.0) ;
2240     }
2241
2242     if ( changeSel )
2243     {
2244         // restore the original selection
2245         DoSetSelection(startOld, endOld, FALSE);
2246     }
2247
2248     return TRUE;
2249 }
2250
2251 #endif
2252
2253 // ----------------------------------------------------------------------------
2254 // wxRichEditModule
2255 // ----------------------------------------------------------------------------
2256
2257 bool wxRichEditModule::OnInit()
2258 {
2259     // don't do anything - we will load it when needed
2260     return TRUE;
2261 }
2262
2263 void wxRichEditModule::OnExit()
2264 {
2265     for ( size_t i = 0; i < WXSIZEOF(ms_hRichEdit); i++ )
2266     {
2267         if ( ms_hRichEdit[i] )
2268         {
2269             ::FreeLibrary(ms_hRichEdit[i]);
2270             ms_hRichEdit[i] = NULL;
2271         }
2272     }
2273 }
2274
2275 /* static */
2276 bool wxRichEditModule::Load(int version)
2277 {
2278     // we don't support loading richedit 3.0 as I don't know how to distinguish
2279     // it from 2.0 anyhow
2280     wxCHECK_MSG( version == 1 || version == 2, FALSE,
2281                  _T("incorrect richedit control version requested") );
2282
2283     // make it the index in the array
2284     version--;
2285
2286     if ( ms_hRichEdit[version] == (HINSTANCE)-1 )
2287     {
2288         // we had already tried to load it and failed
2289         return FALSE;
2290     }
2291
2292     if ( ms_hRichEdit[version] )
2293     {
2294         // we've already got this one
2295         return TRUE;
2296     }
2297
2298     wxString dllname = version ? _T("riched20") : _T("riched32");
2299     dllname += _T(".dll");
2300
2301     ms_hRichEdit[version] = ::LoadLibrary(dllname);
2302
2303     if ( !ms_hRichEdit[version] )
2304     {
2305         wxLogSysError(_("Could not load Rich Edit DLL '%s'"), dllname.c_str());
2306
2307         ms_hRichEdit[version] = (HINSTANCE)-1;
2308
2309         return FALSE;
2310     }
2311
2312     return TRUE;
2313 }
2314
2315 #endif // wxUSE_RICHEDIT
2316
2317 #endif // wxUSE_TEXTCTRL