src/msw/textctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        msw/textctrl.cpp
   3 // Purpose:     wxTextCtrl
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 #ifdef __GNUG__
  17     #pragma implementation "textctrl.h"
  18 #endif
  19
  20 // ----------------------------------------------------------------------------
  21 // headers
  22 // ----------------------------------------------------------------------------
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #if wxUSE_TEXTCTRL
  32
  33 #ifndef WX_PRECOMP
  34     #include "wx/textctrl.h"
  35     #include "wx/settings.h"
  36     #include "wx/brush.h"
  37     #include "wx/utils.h"
  38     #include "wx/intl.h"
  39     #include "wx/log.h"
  40     #include "wx/app.h"
  41     #include "wx/menu.h"
  42 #endif
  43
  44 #include "wx/module.h"
  45
  46 #if wxUSE_CLIPBOARD
  47     #include "wx/clipbrd.h"
  48 #endif
  49
  50 #include "wx/textfile.h"
  51
  52 #include <windowsx.h>
  53
  54 #include "wx/msw/private.h"
  55
  56 #include <string.h>
  57 #include <stdlib.h>
  58 #include <sys/types.h>
  59
  60 #if wxUSE_RICHEDIT
  61
  62 // old mingw32 has richedit stuff directly in windows.h and doesn't have
  63 // richedit.h at all
  64 #if !defined(__GNUWIN32_OLD__) || defined(__CYGWIN10__)
  65     #include <richedit.h>
  66 #endif
  67
  68 // old mingw32 doesn't define this
  69 #ifndef CFM_CHARSET
  70     #define CFM_CHARSET 0x08000000
  71 #endif // CFM_CHARSET
  72
  73 #ifndef CFM_BACKCOLOR
  74     #define CFM_BACKCOLOR 0x04000000
  75 #endif
  76
  77 // cygwin does not have these defined for richedit
  78 #ifndef ENM_LINK
  79     #define ENM_LINK 0x04000000
  80 #endif
  81
  82 #ifndef EM_AUTOURLDETECT
  83     #define EM_AUTOURLDETECT (WM_USER + 91)
  84 #endif
  85
  86 #ifndef EN_LINK
  87     #define EN_LINK 0x070b
  88
  89     typedef struct _enlink
  90     {
  91         NMHDR nmhdr;
  92         UINT msg;
  93         WPARAM wParam;
  94         LPARAM lParam;
  95         CHARRANGE chrg;
  96     } ENLINK;
  97 #endif // ENLINK
  98
  99 #ifndef SF_UNICODE
 100     #define SF_UNICODE 0x0010
 101 #endif
 102
 103 // Watcom C++ doesn't define this
 104 #ifndef SCF_ALL
 105     #define SCF_ALL 0x0004
 106 #endif
 107
 108 #endif // wxUSE_RICHEDIT
 109
 110 // ----------------------------------------------------------------------------
 111 // private functions
 112 // ----------------------------------------------------------------------------
 113
 114 #if wxUSE_RICHEDIT
 115
 116 DWORD CALLBACK wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb);
 117
 118 #endif // wxUSE_RICHEDIT
 119
 120 // ----------------------------------------------------------------------------
 121 // private classes
 122 // ----------------------------------------------------------------------------
 123
 124 #if wxUSE_RICHEDIT
 125
 126 // this module initializes RichEdit DLL(s) if needed
 127 class wxRichEditModule : public wxModule
 128 {
 129 public:
 130     virtual bool OnInit();
 131     virtual void OnExit();
 132
 133     // load the richedit DLL of at least of required version
 134     static bool Load(int version = 1);
 135
 136 private:
 137     // the handles to richedit 1.0 and 2.0 (or 3.0) DLLs
 138     static HINSTANCE ms_hRichEdit[2];
 139
 140     DECLARE_DYNAMIC_CLASS(wxRichEditModule)
 141 };
 142
 143 HINSTANCE wxRichEditModule::ms_hRichEdit[2] = { NULL, NULL };
 144
 145 IMPLEMENT_DYNAMIC_CLASS(wxRichEditModule, wxModule)
 146
 147 #endif // wxUSE_RICHEDIT
 148
 149 // ----------------------------------------------------------------------------
 150 // event tables and other macros
 151 // ----------------------------------------------------------------------------
 152
 153 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxControl)
 154
 155 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
 156     EVT_CHAR(wxTextCtrl::OnChar)
 157     EVT_DROP_FILES(wxTextCtrl::OnDropFiles)
 158
 159 #if wxUSE_RICHEDIT
 160     EVT_RIGHT_UP(wxTextCtrl::OnRightClick)
 161 #endif
 162
 163     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 164     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 165     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 166     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 167     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 168     EVT_MENU(wxID_CLEAR, wxTextCtrl::OnDelete)
 169     EVT_MENU(wxID_SELECTALL, wxTextCtrl::OnSelectAll)
 170
 171     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 172     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 173     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 174     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 175     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 176     EVT_UPDATE_UI(wxID_CLEAR, wxTextCtrl::OnUpdateDelete)
 177     EVT_UPDATE_UI(wxID_SELECTALL, wxTextCtrl::OnUpdateSelectAll)
 178 #ifdef __WIN16__
 179     EVT_ERASE_BACKGROUND(wxTextCtrl::OnEraseBackground)
 180 #endif
 181 END_EVENT_TABLE()
 182
 183 // ============================================================================
 184 // implementation
 185 // ============================================================================
 186
 187 // ----------------------------------------------------------------------------
 188 // creation
 189 // ----------------------------------------------------------------------------
 190
 191 void wxTextCtrl::Init()
 192 {
 193 #if wxUSE_RICHEDIT
 194     m_verRichEdit = 0;
 195 #endif // wxUSE_RICHEDIT
 196
 197     m_privateContextMenu = NULL;
 198     m_suppressNextUpdate = FALSE;
 199 }
 200
 201 wxTextCtrl::~wxTextCtrl()
 202 {
 203     if (m_privateContextMenu)
 204     {
 205         delete m_privateContextMenu;
 206         m_privateContextMenu = NULL;
 207     }
 208 }
 209
 210 bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id,
 211                         const wxString& value,
 212                         const wxPoint& pos,
 213                         const wxSize& size,
 214                         long style,
 215                         const wxValidator& validator,
 216                         const wxString& name)
 217 {
 218     // base initialization
 219     if ( !CreateBase(parent, id, pos, size, style, validator, name) )
 220         return FALSE;
 221
 222     if ( parent )
 223         parent->AddChild(this);
 224
 225     // translate wxWin style flags to MSW ones
 226     WXDWORD msStyle = MSWGetCreateWindowFlags();
 227
 228     // do create the control - either an EDIT or RICHEDIT
 229     wxString windowClass = wxT("EDIT");
 230
 231 #if wxUSE_RICHEDIT
 232     if ( m_windowStyle & wxTE_AUTO_URL )
 233     {
 234         // automatic URL detection only works in RichEdit 2.0+
 235         m_windowStyle |= wxTE_RICH2;
 236     }
 237
 238     if ( m_windowStyle & wxTE_RICH2 )
 239     {
 240         // using richedit 2.0 implies using wxTE_RICH
 241         m_windowStyle |= wxTE_RICH;
 242     }
 243
 244     // we need to load the richedit DLL before creating the rich edit control
 245     if ( m_windowStyle & wxTE_RICH )
 246     {
 247         static bool s_errorGiven = FALSE;// MT-FIXME
 248
 249         // Which version do we need? Use 1.0 by default because it is much more
 250         // like the the standard EDIT or 2.0 if explicitly requested, but use
 251         // only 2.0 in Unicode mode as 1.0 doesn't support Unicode at all
 252         //
 253         // TODO: RichEdit 3.0 is apparently capable of emulating RichEdit 1.0
 254         //       (and thus EDIT) much better than RichEdit 2.0 so we probably
 255         //       should use 3.0 if available as it is the best of both worlds -
 256         //       but as I can't test it right now I don't do it (VZ)
 257 #if wxUSE_UNICODE
 258         const int verRichEdit = 2;
 259 #else // !wxUSE_UNICODE
 260         int verRichEdit = m_windowStyle & wxTE_RICH2 ? 2 : 1;
 261 #endif // wxUSE_UNICODE/!wxUSE_UNICODE
 262
 263         // only give the error msg once if the DLL can't be loaded
 264         if ( !s_errorGiven )
 265         {
 266             // try to load the RichEdit DLL (will do nothing if already done)
 267             if ( !wxRichEditModule::Load(verRichEdit) )
 268             {
 269 #if !wxUSE_UNICODE
 270                 // try another version?
 271                 verRichEdit = 3 - verRichEdit; // 1 <-> 2
 272
 273                 if ( !wxRichEditModule::Load(verRichEdit) )
 274 #endif // wxUSE_UNICODE
 275                 {
 276                     wxLogError(_("Impossible to create a rich edit control, using simple text control instead. Please reinstall riched32.dll"));
 277
 278                     s_errorGiven = TRUE;
 279                 }
 280             }
 281         }
 282
 283         // have we managed to load any richedit version?
 284         if ( !s_errorGiven )
 285         {
 286             m_verRichEdit = verRichEdit;
 287             if ( m_verRichEdit == 1 )
 288             {
 289                 windowClass = wxT("RICHEDIT");
 290             }
 291             else
 292             {
 293 #ifndef RICHEDIT_CLASS
 294                 wxString RICHEDIT_CLASS;
 295                 RICHEDIT_CLASS.Printf(_T("RichEdit%d0"), m_verRichEdit);
 296 #if wxUSE_UNICODE
 297                 RICHEDIT_CLASS += _T('W');
 298 #else // ANSI
 299                 RICHEDIT_CLASS += _T('A');
 300 #endif // Unicode/ANSI
 301 #endif // !RICHEDIT_CLASS
 302
 303                 windowClass = RICHEDIT_CLASS;
 304             }
 305         }
 306     }
 307 #endif // wxUSE_RICHEDIT
 308
 309     // we need to turn '\n's into "\r\n"s for the multiline controls
 310     wxString valueWin;
 311     if ( m_windowStyle & wxTE_MULTILINE )
 312     {
 313         valueWin = wxTextFile::Translate(value, wxTextFileType_Dos);
 314     }
 315     else // single line
 316     {
 317         valueWin = value;
 318     }
 319
 320     if ( !MSWCreateControl(windowClass, msStyle, pos, size, valueWin) )
 321         return FALSE;
 322
 323     SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
 324
 325 #if wxUSE_RICHEDIT
 326     if ( IsRich() )
 327     {
 328         // enable the events we're interested in: we want to get EN_CHANGE as
 329         // for the normal controls
 330         LPARAM mask = ENM_CHANGE;
 331
 332         if ( GetRichVersion() == 1 )
 333         {
 334             // we also need EN_MSGFILTER for richedit 1.0 for the reasons
 335             // explained in its handler
 336            mask |= ENM_MOUSEEVENTS;
 337         }
 338         else if ( m_windowStyle & wxTE_AUTO_URL )
 339         {
 340             mask |= ENM_LINK;
 341
 342             ::SendMessage(GetHwnd(), EM_AUTOURLDETECT, TRUE, 0);
 343         }
 344
 345         ::SendMessage(GetHwnd(), EM_SETEVENTMASK, 0, mask);
 346     }
 347 #endif // wxUSE_RICHEDIT
 348
 349     return TRUE;
 350 }
 351
 352 // Make sure the window style (etc.) reflects the HWND style (roughly)
 353 void wxTextCtrl::AdoptAttributesFromHWND()
 354 {
 355     wxWindow::AdoptAttributesFromHWND();
 356
 357     HWND hWnd = GetHwnd();
 358     long style = ::GetWindowLong(hWnd, GWL_STYLE);
 359
 360     // retrieve the style to see whether this is an edit or richedit ctrl
 361 #if wxUSE_RICHEDIT
 362     wxString classname = wxGetWindowClass(GetHWND());
 363
 364     if ( classname.IsSameAs(_T("EDIT"), FALSE /* no case */) )
 365     {
 366         m_verRichEdit = 0;
 367     }
 368     else // rich edit?
 369     {
 370         wxChar c;
 371         if ( wxSscanf(classname, _T("RichEdit%d0%c"), &m_verRichEdit, &c) != 2 )
 372         {
 373             wxLogDebug(_T("Unknown edit control '%s'."), classname.c_str());
 374
 375             m_verRichEdit = 0;
 376         }
 377     }
 378 #endif // wxUSE_RICHEDIT
 379
 380     if (style & ES_MULTILINE)
 381         m_windowStyle |= wxTE_MULTILINE;
 382     if (style & ES_PASSWORD)
 383         m_windowStyle |= wxTE_PASSWORD;
 384     if (style & ES_READONLY)
 385         m_windowStyle |= wxTE_READONLY;
 386     if (style & ES_WANTRETURN)
 387         m_windowStyle |= wxTE_PROCESS_ENTER;
 388     if (style & ES_CENTER)
 389         m_windowStyle |= wxTE_CENTRE;
 390     if (style & ES_RIGHT)
 391         m_windowStyle |= wxTE_RIGHT;
 392 }
 393
 394 WXDWORD wxTextCtrl::MSWGetStyle(long style, WXDWORD *exstyle) const
 395 {
 396     // default border for the text controls is the sunken one
 397     if ( (style & wxBORDER_MASK) == wxBORDER_DEFAULT )
 398     {
 399         style |= wxBORDER_SUNKEN;
 400     }
 401
 402     long msStyle = wxControl::MSWGetStyle(style, exstyle);
 403
 404     // styles which we alaways add by default
 405     if ( style & wxTE_MULTILINE )
 406     {
 407         wxASSERT_MSG( !(style & wxTE_PROCESS_ENTER),
 408                       wxT("wxTE_PROCESS_ENTER style is ignored for multiline text controls (they always process it)") );
 409
 410         msStyle |= ES_MULTILINE | ES_WANTRETURN;
 411         if ( !(style & wxTE_NO_VSCROLL) )
 412         {
 413             // always adjust the vertical scrollbar automatically if we have it
 414             msStyle |= WS_VSCROLL | ES_AUTOVSCROLL;
 415
 416 #if wxUSE_RICHEDIT
 417             // we have to use this style for the rich edit controls because
 418             // without it the vertical scrollbar never appears at all in
 419             // richedit 3.0 because of our ECO_NOHIDESEL hack (search for it)
 420             if ( style & wxTE_RICH2 )
 421             {
 422                 msStyle |= ES_DISABLENOSCROLL;
 423             }
 424 #endif // wxUSE_RICHEDIT
 425         }
 426
 427         style |= wxTE_PROCESS_ENTER;
 428     }
 429     else // !multiline
 430     {
 431         // there is really no reason to not have this style for single line
 432         // text controls
 433         msStyle |= ES_AUTOHSCROLL;
 434     }
 435
 436     // styles which we add depending on the specified wxWindows styles
 437     if ( style & wxHSCROLL )
 438     {
 439         // automatically scroll the control horizontally as necessary
 440         msStyle |= WS_HSCROLL;// | ES_AUTOHSCROLL;
 441     }
 442
 443     if ( style & wxTE_READONLY )
 444         msStyle |= ES_READONLY;
 445
 446     if ( style & wxTE_PASSWORD )
 447         msStyle |= ES_PASSWORD;
 448
 449     if ( style & wxTE_NOHIDESEL )
 450         msStyle |= ES_NOHIDESEL;
 451
 452     // note that we can't do do "& wxTE_LEFT" as wxTE_LEFT == 0
 453     if ( style & wxTE_CENTRE )
 454         msStyle |= ES_CENTER;
 455     else if ( style & wxTE_RIGHT )
 456         msStyle |= ES_RIGHT;
 457     else
 458         msStyle |= ES_LEFT; // ES_LEFT if 0 as well but for consistency...
 459
 460     return msStyle;
 461 }
 462
 463 void wxTextCtrl::SetWindowStyleFlag(long style)
 464 {
 465     if ( (style & wxBORDER_MASK) == wxBORDER_DEFAULT )
 466         style |= wxBORDER_SUNKEN;
 467
 468 #if wxUSE_RICHEDIT
 469     // we have to deal with some styles separately because they can't be
 470     // changed by simply calling SetWindowLong(GWL_STYLE) but can be changed
 471     // using richedit-specific EM_SETOPTIONS
 472     if ( IsRich() &&
 473             ((style & wxTE_NOHIDESEL) != (GetWindowStyle() & wxTE_NOHIDESEL)) )
 474     {
 475         bool set = (style & wxTE_NOHIDESEL) != 0;
 476
 477         ::SendMessage(GetHwnd(), EM_SETOPTIONS, set ? ECOOP_OR : ECOOP_AND,
 478                       set ? ECO_NOHIDESEL : ~ECO_NOHIDESEL);
 479     }
 480 #endif // wxUSE_RICHEDIT
 481
 482     wxControl::SetWindowStyleFlag(style);
 483 }
 484
 485 // ----------------------------------------------------------------------------
 486 // set/get the controls text
 487 // ----------------------------------------------------------------------------
 488
 489 wxString wxTextCtrl::GetValue() const
 490 {
 491     // range 0..-1 is special for GetRange() and means to retrieve all text
 492     return GetRange(0, -1);
 493 }
 494
 495 wxString wxTextCtrl::GetRange(long from, long to) const
 496 {
 497     wxString str;
 498
 499     if ( from >= to && to != -1 )
 500     {
 501         // nothing to retrieve
 502         return str;
 503     }
 504
 505 #if wxUSE_RICHEDIT
 506     if ( IsRich() )
 507     {
 508         int len = GetWindowTextLength(GetHwnd());
 509         if ( len > from )
 510         {
 511             // alloc one extra WORD as needed by the control
 512             wxChar *p = str.GetWriteBuf(++len);
 513
 514             TEXTRANGE textRange;
 515             textRange.chrg.cpMin = from;
 516             textRange.chrg.cpMax = to == -1 ? len : to;
 517             textRange.lpstrText = p;
 518
 519             (void)SendMessage(GetHwnd(), EM_GETTEXTRANGE, 0, (LPARAM)&textRange);
 520
 521             if ( m_verRichEdit > 1 )
 522             {
 523                 // RichEdit 2.0 uses just CR ('\r') for the newlines which is
 524                 // neither Unix nor Windows style - convert it to something
 525                 // reasonable
 526                 for ( ; *p; p++ )
 527                 {
 528                     if ( *p == _T('\r') )
 529                         *p = _T('\n');
 530                 }
 531             }
 532
 533             str.UngetWriteBuf();
 534
 535             if ( m_verRichEdit == 1 )
 536             {
 537                 // convert to the canonical form - see comment below
 538                 str = wxTextFile::Translate(str, wxTextFileType_Unix);
 539             }
 540         }
 541         //else: no text at all, leave the string empty
 542     }
 543     else
 544 #endif // wxUSE_RICHEDIT
 545     {
 546         // retrieve all text
 547         str = wxGetWindowText(GetHWND());
 548
 549         // need only a range?
 550         if ( from < to )
 551         {
 552             str = str.Mid(from, to - from);
 553         }
 554
 555         // WM_GETTEXT uses standard DOS CR+LF (\r\n) convention - convert to the
 556         // canonical one (same one as above) for consistency with the other kinds
 557         // of controls and, more importantly, with the other ports
 558         str = wxTextFile::Translate(str, wxTextFileType_Unix);
 559     }
 560
 561     return str;
 562 }
 563
 564 void wxTextCtrl::SetValue(const wxString& value)
 565 {
 566     // if the text is long enough, it's faster to just set it instead of first
 567     // comparing it with the old one (chances are that it will be different
 568     // anyhow, this comparison is there to avoid flicker for small single-line
 569     // edit controls mostly)
 570     if ( (value.length() > 0x400) || (value != GetValue()) )
 571     {
 572         DoWriteText(value, FALSE /* not selection only */);
 573     }
 574
 575     // we should reset the modified flag even if the value didn't really change
 576
 577     // mark the control as being not dirty - we changed its text, not the
 578     // user
 579     DiscardEdits();
 580
 581     // for compatibility, don't move the cursor when doing SetValue()
 582     SetInsertionPoint(0);
 583 }
 584
 585 #if wxUSE_RICHEDIT && (!wxUSE_UNICODE || wxUSE_UNICODE_MSLU)
 586
 587 DWORD CALLBACK wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb)
 588 {
 589     *pcb = 0;
 590
 591     wchar_t *wbuf = (wchar_t *)buf;
 592     const wchar_t *wpc = *(const wchar_t **)dwCookie;
 593     while ( cb && *wpc )
 594     {
 595         *wbuf++ = *wpc++;
 596
 597         cb -= sizeof(wchar_t);
 598         (*pcb) += sizeof(wchar_t);
 599     }
 600
 601     *(const wchar_t **)dwCookie = wpc;
 602
 603     return 0;
 604 }
 605
 606 extern long wxEncodingToCodepage(wxFontEncoding encoding); // from utils.cpp
 607
 608 #if wxUSE_UNICODE_MSLU
 609 bool wxTextCtrl::StreamIn(const wxString& value,
 610                           wxFontEncoding WXUNUSED(encoding),
 611                           bool selectionOnly)
 612 {
 613     const wchar_t *wpc = value.c_str();
 614 #else // !wxUSE_UNICODE_MSLU
 615 bool wxTextCtrl::StreamIn(const wxString& value,
 616                           wxFontEncoding encoding,
 617                           bool selectionOnly)
 618 {
 619     // we have to use EM_STREAMIN to force richedit control 2.0+ to show any
 620     // text in the non default charset -- otherwise it thinks it knows better
 621     // than we do and always shows it in the default one
 622
 623     // first get the Windows code page for this encoding
 624     long codepage = wxEncodingToCodepage(encoding);
 625     if ( codepage == -1 )
 626     {
 627         // unknown encoding
 628         return FALSE;
 629     }
 630
 631     // next translate to Unicode using this code page
 632     int len = ::MultiByteToWideChar(codepage, 0, value, -1, NULL, 0);
 633
 634 #if wxUSE_WCHAR_T
 635     wxWCharBuffer wchBuf(len);
 636 #else
 637     wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
 638 #endif
 639
 640     if ( !::MultiByteToWideChar(codepage, 0, value, -1,
 641                                 (wchar_t *)(const wchar_t *)wchBuf, len) )
 642     {
 643         wxLogLastError(_T("MultiByteToWideChar"));
 644     }
 645
 646     // finally, stream it in the control
 647     const wchar_t *wpc = wchBuf;
 648 #endif // wxUSE_UNICODE_MSLU
 649
 650     EDITSTREAM eds;
 651     wxZeroMemory(eds);
 652     eds.dwCookie = (DWORD)&wpc;
 653     // the cast below is needed for broken (very) old mingw32 headers
 654     eds.pfnCallback = (EDITSTREAMCALLBACK)wxRichEditStreamIn;
 655
 656     // we're going to receive 2 EN_CHANGE notifications if we got any selection
 657     // (same problem as in DoWriteText())
 658     if ( selectionOnly && HasSelection() )
 659     {
 660         // so suppress one of them
 661         m_suppressNextUpdate = TRUE;
 662     }
 663
 664     ::SendMessage(GetHwnd(), EM_STREAMIN,
 665                   SF_TEXT |
 666                   SF_UNICODE |
 667                   (selectionOnly ? SFF_SELECTION : 0),
 668                   (LPARAM)&eds);
 669
 670     if ( eds.dwError )
 671     {
 672         wxLogLastError(_T("EM_STREAMIN"));
 673     }
 674
 675 #if !wxUSE_WCHAR_T
 676     free(wchBuf);
 677 #endif // !wxUSE_WCHAR_T
 678
 679     return TRUE;
 680 }
 681
 682 #endif // wxUSE_RICHEDIT
 683
 684 void wxTextCtrl::WriteText(const wxString& value)
 685 {
 686     DoWriteText(value);
 687 }
 688
 689 void wxTextCtrl::DoWriteText(const wxString& value, bool selectionOnly)
 690 {
 691     wxString valueDos;
 692     if ( m_windowStyle & wxTE_MULTILINE )
 693         valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
 694     else
 695         valueDos = value;
 696
 697 #if wxUSE_RICHEDIT
 698     // there are several complications with the rich edit controls here
 699     bool done = FALSE;
 700     if ( IsRich() )
 701     {
 702         // first, ensure that the new text will be in the default style
 703         if ( !m_defaultStyle.IsDefault() )
 704         {
 705             long start, end;
 706             GetSelection(&start, &end);
 707             SetStyle(start, end, m_defaultStyle);
 708         }
 709
 710 #if wxUSE_UNICODE_MSLU
 711         // RichEdit doesn't have Unicode version of EM_REPLACESEL on Win9x,
 712         // but EM_STREAMIN works
 713         if ( wxUsingUnicowsDll() && GetRichVersion() > 1 )
 714         {
 715            done = StreamIn(valueDos, wxFONTENCODING_SYSTEM, selectionOnly);
 716         }
 717 #endif // wxUSE_UNICODE_MSLU
 718
 719 #if !wxUSE_UNICODE
 720         // next check if the text we're inserting must be shown in a non
 721         // default charset -- this only works for RichEdit > 1.0
 722         if ( GetRichVersion() > 1 )
 723         {
 724             wxFont font = m_defaultStyle.GetFont();
 725             if ( !font.Ok() )
 726                 font = GetFont();
 727
 728             if ( font.Ok() )
 729             {
 730                wxFontEncoding encoding = font.GetEncoding();
 731                if ( encoding != wxFONTENCODING_SYSTEM )
 732                {
 733                    done = StreamIn(valueDos, encoding, selectionOnly);
 734                }
 735             }
 736         }
 737 #endif // !wxUSE_UNICODE
 738     }
 739
 740     if ( !done )
 741 #endif // wxUSE_RICHEDIT
 742     {
 743         // in some cases we get 2 EN_CHANGE notifications after the SendMessage
 744         // call below which is confusing for the client code and so should be
 745         // avoided
 746         //
 747         // these cases are: (a) plain EDIT controls if EM_REPLACESEL is used
 748         // and there is a non empty selection currently and (b) rich text
 749         // controls in any case
 750         if (
 751 #if wxUSE_RICHEDIT
 752             IsRich() ||
 753 #endif // wxUSE_RICHEDIT
 754             (selectionOnly && HasSelection()) )
 755         {
 756             m_suppressNextUpdate = TRUE;
 757         }
 758
 759         ::SendMessage(GetHwnd(), selectionOnly ? EM_REPLACESEL : WM_SETTEXT,
 760                       0, (LPARAM)valueDos.c_str());
 761
 762         // OTOH, non rich text controls don't generate any events at all when
 763         // we use WM_SETTEXT -- have to emulate them here
 764         if ( !selectionOnly
 765 #if wxUSE_RICHEDIT
 766                 && !IsRich()
 767 #endif // wxUSE_RICHEDIT
 768            )
 769         {
 770             // Windows already sends an update event for single-line
 771             // controls.
 772             if ( m_windowStyle & wxTE_MULTILINE )
 773                 SendUpdateEvent();
 774         }
 775     }
 776
 777     AdjustSpaceLimit();
 778 }
 779
 780 void wxTextCtrl::AppendText(const wxString& text)
 781 {
 782     SetInsertionPointEnd();
 783
 784     WriteText(text);
 785
 786 #if wxUSE_RICHEDIT
 787     if ( IsMultiLine() && GetRichVersion() > 1 )
 788     {
 789         // setting the caret to the end and showing it simply doesn't work for
 790         // RichEdit 2.0 -- force it to still do what we want
 791         ::SendMessage(GetHwnd(), EM_LINESCROLL, 0, GetNumberOfLines());
 792     }
 793 #endif // wxUSE_RICHEDIT
 794 }
 795
 796 void wxTextCtrl::Clear()
 797 {
 798     ::SetWindowText(GetHwnd(), wxT(""));
 799
 800 #if wxUSE_RICHEDIT
 801     if ( !IsRich() )
 802 #endif // wxUSE_RICHEDIT
 803     {
 804         // rich edit controls send EN_UPDATE from WM_SETTEXT handler themselves
 805         // but the normal ones don't -- make Clear() behaviour consistent by
 806         // always sending this event
 807
 808         // Windows already sends an update event for single-line
 809         // controls.
 810         if ( m_windowStyle & wxTE_MULTILINE )
 811             SendUpdateEvent();
 812     }
 813 }
 814
 815 #ifdef __WIN32__
 816
 817 bool wxTextCtrl::EmulateKeyPress(const wxKeyEvent& event)
 818 {
 819     SetFocus();
 820
 821     size_t lenOld = GetValue().length();
 822
 823     wxUint32 code = event.GetRawKeyCode();
 824     ::keybd_event(code, 0, 0 /* key press */, 0);
 825     ::keybd_event(code, 0, KEYEVENTF_KEYUP, 0);
 826
 827     // assume that any alphanumeric key changes the total number of characters
 828     // in the control - this should work in 99% of cases
 829     return GetValue().length() != lenOld;
 830 }
 831
 832 #endif // __WIN32__
 833
 834 // ----------------------------------------------------------------------------
 835 // Clipboard operations
 836 // ----------------------------------------------------------------------------
 837
 838 void wxTextCtrl::Copy()
 839 {
 840     if (CanCopy())
 841     {
 842         ::SendMessage(GetHwnd(), WM_COPY, 0, 0L);
 843     }
 844 }
 845
 846 void wxTextCtrl::Cut()
 847 {
 848     if (CanCut())
 849     {
 850         ::SendMessage(GetHwnd(), WM_CUT, 0, 0L);
 851     }
 852 }
 853
 854 void wxTextCtrl::Paste()
 855 {
 856     if (CanPaste())
 857     {
 858         ::SendMessage(GetHwnd(), WM_PASTE, 0, 0L);
 859     }
 860 }
 861
 862 bool wxTextCtrl::HasSelection() const
 863 {
 864     long from, to;
 865     GetSelection(&from, &to);
 866     return from != to;
 867 }
 868
 869 bool wxTextCtrl::CanCopy() const
 870 {
 871     // Can copy if there's a selection
 872     return HasSelection();
 873 }
 874
 875 bool wxTextCtrl::CanCut() const
 876 {
 877     return CanCopy() && IsEditable();
 878 }
 879
 880 bool wxTextCtrl::CanPaste() const
 881 {
 882     if ( !IsEditable() )
 883         return FALSE;
 884
 885 #if wxUSE_RICHEDIT
 886     if ( IsRich() )
 887     {
 888         UINT cf = 0; // 0 == any format
 889
 890         return ::SendMessage(GetHwnd(), EM_CANPASTE, cf, 0) != 0;
 891     }
 892 #endif // wxUSE_RICHEDIT
 893
 894     // Standard edit control: check for straight text on clipboard
 895     if ( !::OpenClipboard(GetHwndOf(wxTheApp->GetTopWindow())) )
 896         return FALSE;
 897
 898     bool isTextAvailable = ::IsClipboardFormatAvailable(CF_TEXT) != 0;
 899     ::CloseClipboard();
 900
 901     return isTextAvailable;
 902 }
 903
 904 // ----------------------------------------------------------------------------
 905 // Accessors
 906 // ----------------------------------------------------------------------------
 907
 908 void wxTextCtrl::SetEditable(bool editable)
 909 {
 910     HWND hWnd = GetHwnd();
 911     SendMessage(hWnd, EM_SETREADONLY, (WPARAM)!editable, (LPARAM)0L);
 912 }
 913
 914 void wxTextCtrl::SetInsertionPoint(long pos)
 915 {
 916     DoSetSelection(pos, pos);
 917 }
 918
 919 void wxTextCtrl::SetInsertionPointEnd()
 920 {
 921     // we must not do anything if the caret is already there because calling
 922     // SetInsertionPoint() thaws the controls if Freeze() had been called even
 923     // if it doesn't actually move the caret anywhere and so the simple fact of
 924     // doing it results in horrible flicker when appending big amounts of text
 925     // to the control in a few chunks (see DoAddText() test in the text sample)
 926     if ( GetInsertionPoint() == GetLastPosition() )
 927         return;
 928
 929     long pos;
 930
 931 #if wxUSE_RICHEDIT
 932     if ( m_verRichEdit == 1 )
 933     {
 934         // we don't have to waste time calling GetLastPosition() in this case
 935         pos = -1;
 936     }
 937     else // !RichEdit 1.0
 938 #endif // wxUSE_RICHEDIT
 939     {
 940         pos = GetLastPosition();
 941     }
 942
 943     SetInsertionPoint(pos);
 944 }
 945
 946 long wxTextCtrl::GetInsertionPoint() const
 947 {
 948 #if wxUSE_RICHEDIT
 949     if ( IsRich() )
 950     {
 951         CHARRANGE range;
 952         range.cpMin = 0;
 953         range.cpMax = 0;
 954         SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
 955         return range.cpMin;
 956     }
 957 #endif // wxUSE_RICHEDIT
 958
 959     DWORD Pos = (DWORD)SendMessage(GetHwnd(), EM_GETSEL, 0, 0L);
 960     return Pos & 0xFFFF;
 961 }
 962
 963 long wxTextCtrl::GetLastPosition() const
 964 {
 965     int numLines = GetNumberOfLines();
 966     long posStartLastLine = XYToPosition(0, numLines - 1);
 967
 968     long lenLastLine = GetLengthOfLineContainingPos(posStartLastLine);
 969
 970     return posStartLastLine + lenLastLine;
 971 }
 972
 973 // If the return values from and to are the same, there is no
 974 // selection.
 975 void wxTextCtrl::GetSelection(long* from, long* to) const
 976 {
 977 #if wxUSE_RICHEDIT
 978     if ( IsRich() )
 979     {
 980         CHARRANGE charRange;
 981         ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &charRange);
 982
 983         *from = charRange.cpMin;
 984         *to = charRange.cpMax;
 985     }
 986     else
 987 #endif // !wxUSE_RICHEDIT
 988     {
 989         DWORD dwStart, dwEnd;
 990         ::SendMessage(GetHwnd(), EM_GETSEL, (WPARAM)&dwStart, (LPARAM)&dwEnd);
 991
 992         *from = dwStart;
 993         *to = dwEnd;
 994     }
 995 }
 996
 997 bool wxTextCtrl::IsEditable() const
 998 {
 999     // strangely enough, we may be called before the control is created: our
1000     // own Create() calls MSWGetStyle() which calls AcceptsFocus() which calls
1001     // us
1002     if ( !m_hWnd )
1003         return TRUE;
1004
1005     long style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1006
1007     return (style & ES_READONLY) == 0;
1008 }
1009
1010 // ----------------------------------------------------------------------------
1011 // selection
1012 // ----------------------------------------------------------------------------
1013
1014 void wxTextCtrl::SetSelection(long from, long to)
1015 {
1016     // if from and to are both -1, it means (in wxWindows) that all text should
1017     // be selected - translate into Windows convention
1018     if ( (from == -1) && (to == -1) )
1019     {
1020         from = 0;
1021         to = -1;
1022     }
1023
1024     DoSetSelection(from, to);
1025 }
1026
1027 void wxTextCtrl::DoSetSelection(long from, long to, bool scrollCaret)
1028 {
1029     HWND hWnd = GetHwnd();
1030
1031 #ifdef __WIN32__
1032 #if wxUSE_RICHEDIT
1033     if ( IsRich() )
1034     {
1035         CHARRANGE range;
1036         range.cpMin = from;
1037         range.cpMax = to;
1038         SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM) &range);
1039     }
1040     else
1041 #endif // wxUSE_RICHEDIT
1042     {
1043         SendMessage(hWnd, EM_SETSEL, (WPARAM)from, (LPARAM)to);
1044     }
1045
1046     if ( scrollCaret )
1047     {
1048 #if wxUSE_RICHEDIT
1049         // richedit 3.0 (i.e. the version living in riched20.dll distributed
1050         // with Windows 2000 and beyond) doesn't honour EM_SCROLLCARET when
1051         // emulating richedit 2.0 unless the control has focus or ECO_NOHIDESEL
1052         // option is set (but it does work ok in richedit 1.0 mode...)
1053         //
1054         // so to make it work we either need to give focus to it here which
1055         // will probably create many problems (dummy focus events; window
1056         // containing the text control being brought to foreground
1057         // unexpectedly; ...) or to temporarily set ECO_NOHIDESEL which may
1058         // create other problems too -- and in fact it does because if we turn
1059         // on/off this style while appending the text to the control, the
1060         // vertical scrollbar never appears in it even if we append tons of
1061         // text and to work around this the only solution I found was to use
1062         // ES_DISABLENOSCROLL
1063         //
1064         // this is very ugly but I don't see any other way to make this work
1065         if ( GetRichVersion() > 1 )
1066         {
1067             if ( !HasFlag(wxTE_NOHIDESEL) )
1068             {
1069                 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1070                               ECOOP_OR, ECO_NOHIDESEL);
1071             }
1072             //else: everything is already ok
1073         }
1074 #endif // wxUSE_RICHEDIT
1075
1076         SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
1077
1078 #if wxUSE_RICHEDIT
1079         // restore ECO_NOHIDESEL if we changed it
1080         if ( GetRichVersion() > 1 && !HasFlag(wxTE_NOHIDESEL) )
1081         {
1082             ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1083                           ECOOP_AND, ~ECO_NOHIDESEL);
1084         }
1085 #endif // wxUSE_RICHEDIT
1086     }
1087 #else // Win16
1088     // WPARAM is 0: selection is scrolled into view
1089     SendMessage(hWnd, EM_SETSEL, (WPARAM)0, (LPARAM)MAKELONG(from, to));
1090 #endif // Win32/16
1091 }
1092
1093 // ----------------------------------------------------------------------------
1094 // Editing
1095 // ----------------------------------------------------------------------------
1096
1097 void wxTextCtrl::Replace(long from, long to, const wxString& value)
1098 {
1099     // Set selection and remove it
1100     DoSetSelection(from, to, FALSE /* don't scroll caret into view */);
1101
1102     SendMessage(GetHwnd(), EM_REPLACESEL,
1103 #ifdef __WIN32__
1104                 TRUE,
1105 #else
1106                 FALSE,
1107 #endif
1108                 (LPARAM)value.c_str());
1109 }
1110
1111 void wxTextCtrl::Remove(long from, long to)
1112 {
1113     Replace(from, to, _T(""));
1114 }
1115
1116 bool wxTextCtrl::LoadFile(const wxString& file)
1117 {
1118     if ( wxTextCtrlBase::LoadFile(file) )
1119     {
1120         // update the size limit if needed
1121         AdjustSpaceLimit();
1122
1123         return TRUE;
1124     }
1125
1126     return FALSE;
1127 }
1128
1129 bool wxTextCtrl::IsModified() const
1130 {
1131     return SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0;
1132 }
1133
1134 // Makes 'unmodified'
1135 void wxTextCtrl::DiscardEdits()
1136 {
1137     SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0L);
1138 }
1139
1140 int wxTextCtrl::GetNumberOfLines() const
1141 {
1142     return (int)SendMessage(GetHwnd(), EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0);
1143 }
1144
1145 long wxTextCtrl::XYToPosition(long x, long y) const
1146 {
1147     // This gets the char index for the _beginning_ of this line
1148     long charIndex = SendMessage(GetHwnd(), EM_LINEINDEX, (WPARAM)y, (LPARAM)0);
1149
1150     return charIndex + x;
1151 }
1152
1153 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
1154 {
1155     HWND hWnd = GetHwnd();
1156
1157     // This gets the line number containing the character
1158     long lineNo;
1159 #if wxUSE_RICHEDIT
1160     if ( IsRich() )
1161     {
1162         lineNo = SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, (LPARAM)pos);
1163     }
1164     else
1165 #endif // wxUSE_RICHEDIT
1166     {
1167         lineNo = SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, 0);
1168     }
1169
1170     if ( lineNo == -1 )
1171     {
1172         // no such line
1173         return FALSE;
1174     }
1175
1176     // This gets the char index for the _beginning_ of this line
1177     long charIndex = SendMessage(hWnd, EM_LINEINDEX, (WPARAM)lineNo, (LPARAM)0);
1178     if ( charIndex == -1 )
1179     {
1180         return FALSE;
1181     }
1182
1183     // The X position must therefore be the different between pos and charIndex
1184     if ( x )
1185         *x = pos - charIndex;
1186     if ( y )
1187         *y = lineNo;
1188
1189     return TRUE;
1190 }
1191
1192 void wxTextCtrl::ShowPosition(long pos)
1193 {
1194     HWND hWnd = GetHwnd();
1195
1196     // To scroll to a position, we pass the number of lines and characters
1197     // to scroll *by*. This means that we need to:
1198     // (1) Find the line position of the current line.
1199     // (2) Find the line position of pos.
1200     // (3) Scroll by (pos - current).
1201     // For now, ignore the horizontal scrolling.
1202
1203     // Is this where scrolling is relative to - the line containing the caret?
1204     // Or is the first visible line??? Try first visible line.
1205 //    int currentLineLineNo1 = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)-1, (LPARAM)0L);
1206
1207     int currentLineLineNo = (int)SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, (WPARAM)0, (LPARAM)0L);
1208
1209     int specifiedLineLineNo = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, (LPARAM)0L);
1210
1211     int linesToScroll = specifiedLineLineNo - currentLineLineNo;
1212
1213     if (linesToScroll != 0)
1214       (void)SendMessage(hWnd, EM_LINESCROLL, (WPARAM)0, (LPARAM)linesToScroll);
1215 }
1216
1217 long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const
1218 {
1219     return ::SendMessage(GetHwnd(), EM_LINELENGTH, (WPARAM)pos, 0);
1220 }
1221
1222 int wxTextCtrl::GetLineLength(long lineNo) const
1223 {
1224     long pos = XYToPosition(0, lineNo);
1225
1226     return GetLengthOfLineContainingPos(pos);
1227 }
1228
1229 wxString wxTextCtrl::GetLineText(long lineNo) const
1230 {
1231     size_t len = (size_t)GetLineLength(lineNo) + 1;
1232
1233     // there must be at least enough place for the length WORD in the
1234     // buffer
1235     len += sizeof(WORD);
1236
1237     wxString str;
1238     wxChar *buf = str.GetWriteBuf(len);
1239
1240     *(WORD *)buf = (WORD)len;
1241     len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf);
1242     buf[len] = 0;
1243
1244     str.UngetWriteBuf(len);
1245
1246     return str;
1247 }
1248
1249 void wxTextCtrl::SetMaxLength(unsigned long len)
1250 {
1251     ::SendMessage(GetHwnd(), EM_LIMITTEXT, len, 0);
1252 }
1253
1254 // ----------------------------------------------------------------------------
1255 // Undo/redo
1256 // ----------------------------------------------------------------------------
1257
1258 void wxTextCtrl::Undo()
1259 {
1260     if (CanUndo())
1261     {
1262         ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1263     }
1264 }
1265
1266 void wxTextCtrl::Redo()
1267 {
1268     if (CanRedo())
1269     {
1270         // Same as Undo, since Undo undoes the undo, i.e. a redo.
1271         ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1272     }
1273 }
1274
1275 bool wxTextCtrl::CanUndo() const
1276 {
1277     return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1278 }
1279
1280 bool wxTextCtrl::CanRedo() const
1281 {
1282     return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1283 }
1284
1285 // ----------------------------------------------------------------------------
1286 // implemenation details
1287 // ----------------------------------------------------------------------------
1288
1289 void wxTextCtrl::Command(wxCommandEvent & event)
1290 {
1291     SetValue(event.GetString());
1292     ProcessCommand (event);
1293 }
1294
1295 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
1296 {
1297     // By default, load the first file into the text window.
1298     if (event.GetNumberOfFiles() > 0)
1299     {
1300         LoadFile(event.GetFiles()[0]);
1301     }
1302 }
1303
1304 // ----------------------------------------------------------------------------
1305 // kbd input processing
1306 // ----------------------------------------------------------------------------
1307
1308 bool wxTextCtrl::MSWShouldPreProcessMessage(WXMSG* pMsg)
1309 {
1310     MSG *msg = (MSG *)pMsg;
1311
1312     // check for our special keys here: if we don't do it and the parent frame
1313     // uses them as accelerators, they wouldn't work at all, so we disable
1314     // usual preprocessing for them
1315     if ( msg->message == WM_KEYDOWN )
1316     {
1317         WORD vkey = (WORD) msg->wParam;
1318         if ( (HIWORD(msg->lParam) & KF_ALTDOWN) == KF_ALTDOWN )
1319         {
1320             if ( vkey == VK_BACK )
1321                 return FALSE;
1322         }
1323         else // no Alt
1324         {
1325             // we want to process some Ctrl-foo and Shift-bar but no key
1326             // combinations without either Ctrl or Shift nor with both of them
1327             // pressed
1328             const int ctrl = wxIsCtrlDown(),
1329                       shift = wxIsShiftDown();
1330             switch ( ctrl + shift )
1331             {
1332                 default:
1333                     wxFAIL_MSG( _T("how many modifiers have we got?") );
1334                     // fall through
1335
1336                 case 0:
1337                 case 2:
1338                     break;
1339
1340                 case 1:
1341                     // either Ctrl or Shift pressed
1342                     if ( ctrl )
1343                     {
1344                         switch ( vkey )
1345                         {
1346                             case 'C':
1347                             case 'V':
1348                             case 'X':
1349                             case VK_INSERT:
1350                             case VK_DELETE:
1351                             case VK_HOME:
1352                             case VK_END:
1353                                 return FALSE;
1354                         }
1355                     }
1356                     else // Shift is pressed
1357                     {
1358                         if ( vkey == VK_INSERT || vkey == VK_DELETE )
1359                             return FALSE;
1360                     }
1361             }
1362         }
1363     }
1364
1365     return wxControl::MSWShouldPreProcessMessage(pMsg);
1366 }
1367
1368 void wxTextCtrl::OnChar(wxKeyEvent& event)
1369 {
1370     switch ( event.GetKeyCode() )
1371     {
1372         case WXK_RETURN:
1373             if ( !(m_windowStyle & wxTE_MULTILINE) )
1374             {
1375                 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1376                 InitCommandEvent(event);
1377                 event.SetString(GetValue());
1378                 if ( GetEventHandler()->ProcessEvent(event) )
1379                     return;
1380             }
1381             //else: multiline controls need Enter for themselves
1382
1383             break;
1384
1385         case WXK_TAB:
1386             // always produce navigation event - even if we process TAB
1387             // ourselves the fact that we got here means that the user code
1388             // decided to skip processing of this TAB - probably to let it
1389             // do its default job.
1390             {
1391                 wxNavigationKeyEvent eventNav;
1392                 eventNav.SetDirection(!event.ShiftDown());
1393                 eventNav.SetWindowChange(event.ControlDown());
1394                 eventNav.SetEventObject(this);
1395
1396                 if ( GetParent()->GetEventHandler()->ProcessEvent(eventNav) )
1397                     return;
1398             }
1399             break;
1400     }
1401
1402     // no, we didn't process it
1403     event.Skip();
1404 }
1405
1406 long wxTextCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
1407 {
1408     long lRc = wxTextCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
1409
1410     if ( nMsg == WM_GETDLGCODE )
1411     {
1412         // we always want the chars and the arrows: the arrows for navigation
1413         // and the chars because we want Ctrl-C to work even in a read only
1414         // control
1415         long lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
1416
1417         if ( IsEditable() )
1418         {
1419             // we may have several different cases:
1420             // 1. normal case: both TAB and ENTER are used for dlg navigation
1421             // 2. ctrl which wants TAB for itself: ENTER is used to pass to the
1422             //    next control in the dialog
1423             // 3. ctrl which wants ENTER for itself: TAB is used for dialog
1424             //    navigation
1425             // 4. ctrl which wants both TAB and ENTER: Ctrl-ENTER is used to go
1426             //    to the next control
1427
1428             // the multiline edit control should always get <Return> for itself
1429             if ( HasFlag(wxTE_PROCESS_ENTER) || HasFlag(wxTE_MULTILINE) )
1430                 lDlgCode |= DLGC_WANTMESSAGE;
1431
1432             if ( HasFlag(wxTE_PROCESS_TAB) )
1433                 lDlgCode |= DLGC_WANTTAB;
1434
1435             lRc |= lDlgCode;
1436         }
1437         else // !editable
1438         {
1439             // NB: use "=", not "|=" as the base class version returns the
1440             //     same flags is this state as usual (i.e. including
1441             //     DLGC_WANTMESSAGE). This is strange (how does it work in the
1442             //     native Win32 apps?) but for now live with it.
1443             lRc = lDlgCode;
1444         }
1445     }
1446
1447     return lRc;
1448 }
1449
1450 // ----------------------------------------------------------------------------
1451 // text control event processing
1452 // ----------------------------------------------------------------------------
1453
1454 bool wxTextCtrl::SendUpdateEvent()
1455 {
1456     // is event reporting suspended?
1457     if ( m_suppressNextUpdate )
1458     {
1459         // do process the next one
1460         m_suppressNextUpdate = FALSE;
1461
1462         return FALSE;
1463     }
1464
1465     wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, GetId());
1466     InitCommandEvent(event);
1467     event.SetString(GetValue());
1468
1469     return ProcessCommand(event);
1470 }
1471
1472 bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
1473 {
1474     switch ( param )
1475     {
1476         case EN_SETFOCUS:
1477         case EN_KILLFOCUS:
1478             {
1479                 wxFocusEvent event(param == EN_KILLFOCUS ? wxEVT_KILL_FOCUS
1480                                                          : wxEVT_SET_FOCUS,
1481                                    m_windowId);
1482                 event.SetEventObject(this);
1483                 GetEventHandler()->ProcessEvent(event);
1484             }
1485             break;
1486
1487         case EN_CHANGE:
1488             SendUpdateEvent();
1489             break;
1490
1491         case EN_MAXTEXT:
1492             // the text size limit has been hit -- try to increase it
1493             if ( !AdjustSpaceLimit() )
1494             {
1495                 wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, m_windowId);
1496                 InitCommandEvent(event);
1497                 event.SetString(GetValue());
1498                 ProcessCommand(event);
1499             }
1500             break;
1501
1502             // the other edit notification messages are not processed
1503         default:
1504             return FALSE;
1505     }
1506
1507     // processed
1508     return TRUE;
1509 }
1510
1511 WXHBRUSH wxTextCtrl::OnCtlColor(WXHDC pDC, WXHWND WXUNUSED(pWnd), WXUINT WXUNUSED(nCtlColor),
1512 #if wxUSE_CTL3D
1513                                WXUINT message,
1514                                WXWPARAM wParam,
1515                                WXLPARAM lParam
1516 #else
1517                                WXUINT WXUNUSED(message),
1518                                WXWPARAM WXUNUSED(wParam),
1519                                WXLPARAM WXUNUSED(lParam)
1520 #endif
1521     )
1522 {
1523 #if wxUSE_CTL3D
1524     if ( m_useCtl3D )
1525     {
1526         HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
1527         return (WXHBRUSH) hbrush;
1528     }
1529 #endif // wxUSE_CTL3D
1530
1531     HDC hdc = (HDC)pDC;
1532     if (GetParent()->GetTransparentBackground())
1533         SetBkMode(hdc, TRANSPARENT);
1534     else
1535         SetBkMode(hdc, OPAQUE);
1536
1537     wxColour colBack = GetBackgroundColour();
1538
1539     if (!IsEnabled() && (GetWindowStyle() & wxTE_MULTILINE) == 0)
1540         colBack = wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE);
1541
1542     ::SetBkColor(hdc, wxColourToRGB(colBack));
1543     ::SetTextColor(hdc, wxColourToRGB(GetForegroundColour()));
1544
1545     wxBrush *brush = wxTheBrushList->FindOrCreateBrush(colBack, wxSOLID);
1546
1547     return (WXHBRUSH)brush->GetResourceHandle();
1548 }
1549
1550 // In WIN16, need to override normal erasing because
1551 // Ctl3D doesn't use the wxWindows background colour.
1552 #ifdef __WIN16__
1553 void wxTextCtrl::OnEraseBackground(wxEraseEvent& event)
1554 {
1555     wxColour col(m_backgroundColour);
1556
1557 #if wxUSE_CTL3D
1558     if (m_useCtl3D)
1559         col = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
1560 #endif
1561
1562     RECT rect;
1563     ::GetClientRect(GetHwnd(), &rect);
1564
1565     COLORREF ref = wxColourToRGB(col);
1566     HBRUSH hBrush = ::CreateSolidBrush(ref);
1567     if ( !hBrush )
1568         wxLogLastError(wxT("CreateSolidBrush"));
1569
1570     HDC hdc = (HDC)event.GetDC()->GetHDC();
1571
1572     int mode = ::SetMapMode(hdc, MM_TEXT);
1573
1574     ::FillRect(hdc, &rect, hBrush);
1575     ::DeleteObject(hBrush);
1576     ::SetMapMode(hdc, mode);
1577
1578 }
1579 #endif // Win16
1580
1581 bool wxTextCtrl::AdjustSpaceLimit()
1582 {
1583 #ifndef __WIN16__
1584     unsigned int limit = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
1585
1586     // HACK: we try to automatically extend the limit for the amount of text
1587     //       to allow (interactively) entering more than 64Kb of text under
1588     //       Win9x but we shouldn't reset the text limit which was previously
1589     //       set explicitly with SetMaxLength()
1590     //
1591     //       we could solve this by storing the limit we set in wxTextCtrl but
1592     //       to save space we prefer to simply test here the actual limit
1593     //       value: we consider that SetMaxLength() can only be called for
1594     //       values < 32Kb
1595     if ( limit < 0x8000 )
1596     {
1597         // we've got more text than limit set by SetMaxLength()
1598         return FALSE;
1599     }
1600
1601     unsigned int len = ::GetWindowTextLength(GetHwnd());
1602     if ( len >= limit )
1603     {
1604         limit = len + 0x8000;    // 32Kb
1605
1606 #if wxUSE_RICHEDIT
1607         if ( IsRich() )
1608         {
1609             // as a nice side effect, this also allows passing limit > 64Kb
1610             ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, limit);
1611         }
1612         else
1613 #endif // wxUSE_RICHEDIT
1614         {
1615             if ( limit > 0xffff )
1616             {
1617                 // this will set it to a platform-dependent maximum (much more
1618                 // than 64Kb under NT)
1619                 limit = 0;
1620             }
1621
1622             ::SendMessage(GetHwnd(), EM_LIMITTEXT, limit, 0);
1623         }
1624     }
1625 #endif // !Win16
1626
1627     // we changed the limit
1628     return TRUE;
1629 }
1630
1631 bool wxTextCtrl::AcceptsFocus() const
1632 {
1633     // we don't want focus if we can't be edited unless we're a multiline
1634     // control because then it might be still nice to get focus from keyboard
1635     // to be able to scroll it without mouse
1636     return (IsEditable() || IsMultiLine()) && wxControl::AcceptsFocus();
1637 }
1638
1639 wxSize wxTextCtrl::DoGetBestSize() const
1640 {
1641     int cx, cy;
1642     wxGetCharSize(GetHWND(), &cx, &cy, &GetFont());
1643
1644     int wText = DEFAULT_ITEM_WIDTH;
1645
1646     int hText = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy);
1647     if ( m_windowStyle & wxTE_MULTILINE )
1648     {
1649         hText *= wxMax(GetNumberOfLines(), 5);
1650     }
1651     //else: for single line control everything is ok
1652
1653     return wxSize(wText, hText);
1654 }
1655
1656 // ----------------------------------------------------------------------------
1657 // standard handlers for standard edit menu events
1658 // ----------------------------------------------------------------------------
1659
1660 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1661 {
1662     Cut();
1663 }
1664
1665 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1666 {
1667     Copy();
1668 }
1669
1670 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1671 {
1672     Paste();
1673 }
1674
1675 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1676 {
1677     Undo();
1678 }
1679
1680 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1681 {
1682     Redo();
1683 }
1684
1685 void wxTextCtrl::OnDelete(wxCommandEvent& event)
1686 {
1687     long from, to;
1688     GetSelection(& from, & to);
1689     if (from != -1 && to != -1)
1690         Remove(from, to);
1691 }
1692
1693 void wxTextCtrl::OnSelectAll(wxCommandEvent& event)
1694 {
1695     SetSelection(-1, -1);
1696 }
1697
1698 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1699 {
1700     event.Enable( CanCut() );
1701 }
1702
1703 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1704 {
1705     event.Enable( CanCopy() );
1706 }
1707
1708 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1709 {
1710     event.Enable( CanPaste() );
1711 }
1712
1713 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1714 {
1715     event.Enable( CanUndo() );
1716 }
1717
1718 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1719 {
1720     event.Enable( CanRedo() );
1721 }
1722
1723 void wxTextCtrl::OnUpdateDelete(wxUpdateUIEvent& event)
1724 {
1725     long from, to;
1726     GetSelection(& from, & to);
1727     event.Enable(from != -1 && to != -1 && from != to && IsEditable()) ;
1728 }
1729
1730 void wxTextCtrl::OnUpdateSelectAll(wxUpdateUIEvent& event)
1731 {
1732     event.Enable(GetLastPosition() > 0);
1733 }
1734
1735 void wxTextCtrl::OnRightClick(wxMouseEvent& event)
1736 {
1737 #if wxUSE_RICHEDIT
1738     if (IsRich())
1739     {
1740         if (!m_privateContextMenu)
1741         {
1742             m_privateContextMenu = new wxMenu;
1743             m_privateContextMenu->Append(wxID_UNDO, _("&Undo"));
1744             m_privateContextMenu->Append(wxID_REDO, _("&Redo"));
1745             m_privateContextMenu->AppendSeparator();
1746             m_privateContextMenu->Append(wxID_CUT, _("Cu&t"));
1747             m_privateContextMenu->Append(wxID_COPY, _("&Copy"));
1748             m_privateContextMenu->Append(wxID_PASTE, _("&Paste"));
1749             m_privateContextMenu->Append(wxID_CLEAR, _("&Delete"));
1750             m_privateContextMenu->AppendSeparator();
1751             m_privateContextMenu->Append(wxID_SELECTALL, _("Select &All"));
1752         }
1753         PopupMenu(m_privateContextMenu, event.GetPosition());
1754         return;
1755     }
1756     else
1757 #endif
1758     event.Skip();
1759 }
1760
1761 // the rest of the file only deals with the rich edit controls
1762 #if wxUSE_RICHEDIT
1763
1764 // ----------------------------------------------------------------------------
1765 // EN_LINK processing
1766 // ----------------------------------------------------------------------------
1767
1768 bool wxTextCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
1769 {
1770     NMHDR *hdr = (NMHDR* )lParam;
1771     switch ( hdr->code )
1772     {
1773        case EN_MSGFILTER:
1774             {
1775                 const MSGFILTER *msgf = (MSGFILTER *)lParam;
1776                 UINT msg = msgf->msg;
1777
1778                 // this is a bit crazy but richedit 1.0 sends us all mouse
1779                 // events _except_ WM_LBUTTONUP (don't ask me why) so we have
1780                 // generate the wxWin events for this message manually
1781                 //
1782                 // NB: in fact, this is still not totally correct as it does
1783                 //     send us WM_LBUTTONUP if the selection was cleared by the
1784                 //     last click -- so currently we get 2 events in this case,
1785                 //     but as I don't see any obvious way to check for this I
1786                 //     leave this code in place because it's still better than
1787                 //     not getting left up events at all
1788                 if ( msg == WM_LBUTTONUP )
1789                 {
1790                     WXUINT flags = msgf->wParam;
1791                     int x = GET_X_LPARAM(msgf->lParam),
1792                         y = GET_Y_LPARAM(msgf->lParam);
1793
1794                     HandleMouseEvent(msg, x, y, flags);
1795                 }
1796             }
1797
1798             // return TRUE to process the event (and FALSE to ignore it)
1799             return TRUE;
1800
1801         case EN_LINK:
1802             {
1803                 const ENLINK *enlink = (ENLINK *)hdr;
1804
1805                 switch ( enlink->msg )
1806                 {
1807                     case WM_SETCURSOR:
1808                         // ok, so it is hardcoded - do we really nee to
1809                         // customize it?
1810                         ::SetCursor(GetHcursorOf(wxCursor(wxCURSOR_HAND)));
1811                         *result = TRUE;
1812                         break;
1813
1814                     case WM_MOUSEMOVE:
1815                     case WM_LBUTTONDOWN:
1816                     case WM_LBUTTONUP:
1817                     case WM_LBUTTONDBLCLK:
1818                     case WM_RBUTTONDOWN:
1819                     case WM_RBUTTONUP:
1820                     case WM_RBUTTONDBLCLK:
1821                         // send a mouse event
1822                         {
1823                             static const wxEventType eventsMouse[] =
1824                             {
1825                                 wxEVT_MOTION,
1826                                 wxEVT_LEFT_DOWN,
1827                                 wxEVT_LEFT_UP,
1828                                 wxEVT_LEFT_DCLICK,
1829                                 wxEVT_RIGHT_DOWN,
1830                                 wxEVT_RIGHT_UP,
1831                                 wxEVT_RIGHT_DCLICK,
1832                             };
1833
1834                             // the event ids are consecutive
1835                             wxMouseEvent
1836                                 evtMouse(eventsMouse[enlink->msg - WM_MOUSEMOVE]);
1837
1838                             InitMouseEvent(evtMouse,
1839                                            GET_X_LPARAM(enlink->lParam),
1840                                            GET_Y_LPARAM(enlink->lParam),
1841                                            enlink->wParam);
1842
1843                             wxTextUrlEvent event(m_windowId, evtMouse,
1844                                                  enlink->chrg.cpMin,
1845                                                  enlink->chrg.cpMax);
1846
1847                             InitCommandEvent(event);
1848
1849                             *result = ProcessCommand(event);
1850                         }
1851                         break;
1852                 }
1853             }
1854             return TRUE;
1855     }
1856
1857     // not processed, leave it to the base class
1858     return wxTextCtrlBase::MSWOnNotify(idCtrl, lParam, result);
1859 }
1860
1861 // ----------------------------------------------------------------------------
1862 // colour setting for the rich edit controls
1863 // ----------------------------------------------------------------------------
1864
1865 bool wxTextCtrl::SetBackgroundColour(const wxColour& colour)
1866 {
1867     if ( !wxTextCtrlBase::SetBackgroundColour(colour) )
1868     {
1869         // colour didn't really change
1870         return FALSE;
1871     }
1872
1873     if ( IsRich() )
1874     {
1875         // rich edit doesn't use WM_CTLCOLOR, hence we need to send
1876         // EM_SETBKGNDCOLOR additionally
1877         ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour));
1878     }
1879
1880     return TRUE;
1881 }
1882
1883 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1884 {
1885     if ( !wxTextCtrlBase::SetForegroundColour(colour) )
1886     {
1887         // colour didn't really change
1888         return FALSE;
1889     }
1890
1891     if ( IsRich() )
1892     {
1893         // change the colour of everything
1894         CHARFORMAT cf;
1895         wxZeroMemory(cf);
1896         cf.cbSize = sizeof(cf);
1897         cf.dwMask = CFM_COLOR;
1898         cf.crTextColor = wxColourToRGB(colour);
1899         ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf);
1900     }
1901
1902     return TRUE;
1903 }
1904
1905 // ----------------------------------------------------------------------------
1906 // styling support for rich edit controls
1907 // ----------------------------------------------------------------------------
1908
1909 #if wxUSE_RICHEDIT
1910
1911 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
1912 {
1913     if ( !IsRich() )
1914     {
1915         // can't do it with normal text control
1916         return FALSE;
1917     }
1918
1919     // the richedit 1.0 doesn't handle setting background colour, so don't
1920     // even try to do anything if it's the only thing we want to change
1921     if ( m_verRichEdit == 1 && !style.HasFont() && !style.HasTextColour() &&
1922         !style.HasLeftIndent() && !style.HasRightIndent() && !style.HasAlignment() &&
1923         !style.HasTabs() )
1924     {
1925         // nothing to do: return TRUE if there was really nothing to do and
1926         // FALSE if we failed to set bg colour
1927         return !style.HasBackgroundColour();
1928     }
1929
1930     // order the range if needed
1931     if ( start > end )
1932     {
1933         long tmp = start;
1934         start = end;
1935         end = tmp;
1936     }
1937
1938     // we can only change the format of the selection, so select the range we
1939     // want and restore the old selection later
1940     long startOld, endOld;
1941     GetSelection(&startOld, &endOld);
1942
1943     // but do we really have to change the selection?
1944     bool changeSel = start != startOld || end != endOld;
1945
1946     if ( changeSel )
1947     {
1948         DoSetSelection(start, end, FALSE /* don't scroll caret into view */);
1949     }
1950
1951     // initialize CHARFORMAT struct
1952 #if wxUSE_RICHEDIT2
1953     CHARFORMAT2 cf;
1954 #else
1955     CHARFORMAT cf;
1956 #endif
1957
1958     wxZeroMemory(cf);
1959
1960     // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
1961     // CHARFORMAT in that case
1962 #if wxUSE_RICHEDIT2
1963     if ( m_verRichEdit == 1 )
1964     {
1965         // this is the only thing the control is going to grok
1966         cf.cbSize = sizeof(CHARFORMAT);
1967     }
1968     else
1969 #endif
1970     {
1971         // CHARFORMAT or CHARFORMAT2
1972         cf.cbSize = sizeof(cf);
1973     }
1974
1975     if ( style.HasFont() )
1976     {
1977         // VZ: CFM_CHARSET doesn't seem to do anything at all in RichEdit 2.0
1978         //     but using it doesn't seem to hurt neither so leaving it for now
1979
1980         cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET |
1981                      CFM_ITALIC | CFM_BOLD | CFM_UNDERLINE;
1982
1983         // fill in data from LOGFONT but recalculate lfHeight because we need
1984         // the real height in twips and not the negative number which
1985         // wxFillLogFont() returns (this is correct in general and works with
1986         // the Windows font mapper, but not here)
1987         LOGFONT lf;
1988         wxFillLogFont(&lf, &style.GetFont());
1989         cf.yHeight = 20*style.GetFont().GetPointSize(); // 1 pt = 20 twips
1990         cf.bCharSet = lf.lfCharSet;
1991         cf.bPitchAndFamily = lf.lfPitchAndFamily;
1992         wxStrncpy( cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName) );
1993
1994         // also deal with underline/italic/bold attributes: note that we must
1995         // always set CFM_ITALIC &c bits in dwMask, even if we don't set the
1996         // style to allow clearing it
1997         if ( lf.lfItalic )
1998         {
1999             cf.dwEffects |= CFE_ITALIC;
2000         }
2001
2002         if ( lf.lfWeight == FW_BOLD )
2003         {
2004             cf.dwEffects |= CFE_BOLD;
2005         }
2006
2007         if ( lf.lfUnderline )
2008         {
2009             cf.dwEffects |= CFE_UNDERLINE;
2010         }
2011
2012         // strikeout fonts are not supported by wxWindows
2013     }
2014
2015     if ( style.HasTextColour() )
2016     {
2017         cf.dwMask |= CFM_COLOR;
2018         cf.crTextColor = wxColourToRGB(style.GetTextColour());
2019     }
2020
2021 #if wxUSE_RICHEDIT2
2022     if ( m_verRichEdit != 1 && style.HasBackgroundColour() )
2023     {
2024         cf.dwMask |= CFM_BACKCOLOR;
2025         cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
2026     }
2027 #endif // wxUSE_RICHEDIT2
2028
2029     // do format the selection
2030     bool ok = ::SendMessage(GetHwnd(), EM_SETCHARFORMAT,
2031                             SCF_SELECTION, (LPARAM)&cf) != 0;
2032     if ( !ok )
2033     {
2034         wxLogDebug(_T("SendMessage(EM_SETCHARFORMAT, SCF_SELECTION) failed"));
2035     }
2036
2037     // now do the paragraph formatting
2038     PARAFORMAT2 pf;
2039     wxZeroMemory(pf);
2040     // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2041     // PARAFORMAT in that case
2042 #if wxUSE_RICHEDIT2
2043     if ( m_verRichEdit == 1 )
2044     {
2045         // this is the only thing the control is going to grok
2046         pf.cbSize = sizeof(PARAFORMAT);
2047     }
2048     else
2049 #endif
2050     {
2051         // PARAFORMAT or PARAFORMAT2
2052         pf.cbSize = sizeof(pf);
2053     }
2054
2055     if (style.HasAlignment())
2056     {
2057         pf.dwMask |= PFM_ALIGNMENT;
2058         if (style.GetAlignment() == wxTEXT_ALIGNMENT_RIGHT)
2059             pf.wAlignment = PFA_RIGHT;
2060         else if (style.GetAlignment() == wxTEXT_ALIGNMENT_CENTRE)
2061             pf.wAlignment = PFA_CENTER;
2062         else if (style.GetAlignment() == wxTEXT_ALIGNMENT_JUSTIFIED)
2063             pf.wAlignment = PFA_JUSTIFY;
2064         else
2065             pf.wAlignment = PFA_LEFT;
2066     }
2067
2068     if (style.HasLeftIndent())
2069     {
2070         pf.dwMask |= PFM_STARTINDENT;
2071
2072         // Convert from 1/10 mm to TWIPS
2073         pf.dxStartIndent = (int) (((double) style.GetLeftIndent()) * mm2twips / 10.0) ;
2074
2075         // TODO: do we need to specify dxOffset?
2076     }
2077
2078     if (style.HasRightIndent())
2079     {
2080         pf.dwMask |= PFM_RIGHTINDENT;
2081
2082         // Convert from 1/10 mm to TWIPS
2083         pf.dxRightIndent = (int) (((double) style.GetRightIndent()) * mm2twips / 10.0) ;
2084     }
2085
2086     if (style.HasTabs())
2087     {
2088         pf.dwMask |= PFM_TABSTOPS;
2089
2090         const wxArrayInt& tabs = style.GetTabs();
2091
2092         pf.cTabCount = wxMin(tabs.GetCount(), MAX_TAB_STOPS);
2093         size_t i;
2094         for (i = 0; i < (size_t) pf.cTabCount; i++)
2095         {
2096             // Convert from 1/10 mm to TWIPS
2097             pf.rgxTabs[i] = (int) (((double) tabs[i]) * mm2twips / 10.0) ;
2098         }
2099     }
2100
2101     if (pf.dwMask != 0)
2102     {
2103         // do format the selection
2104         bool ok = ::SendMessage(GetHwnd(), EM_SETPARAFORMAT,
2105             0, (LPARAM) &pf) != 0;
2106         if ( !ok )
2107         {
2108             wxLogDebug(_T("SendMessage(EM_SETPARAFORMAT, 0) failed"));
2109         }
2110     }
2111
2112     if ( changeSel )
2113     {
2114         // restore the original selection
2115         DoSetSelection(startOld, endOld, FALSE);
2116     }
2117
2118     return ok;
2119 }
2120
2121 bool wxTextCtrl::SetDefaultStyle(const wxTextAttr& style)
2122 {
2123     if ( !wxTextCtrlBase::SetDefaultStyle(style) )
2124         return FALSE;
2125
2126     // we have to do this or the style wouldn't apply for the text typed by the
2127     // user
2128     long posLast = GetLastPosition();
2129     SetStyle(posLast, posLast, m_defaultStyle);
2130
2131     return TRUE;
2132 }
2133
2134 bool wxTextCtrl::GetStyle(long WXUNUSED(position), wxTextAttr& WXUNUSED(style))
2135 {
2136     // TODO
2137     return FALSE;
2138 }
2139
2140 #endif
2141
2142 // ----------------------------------------------------------------------------
2143 // wxRichEditModule
2144 // ----------------------------------------------------------------------------
2145
2146 bool wxRichEditModule::OnInit()
2147 {
2148     // don't do anything - we will load it when needed
2149     return TRUE;
2150 }
2151
2152 void wxRichEditModule::OnExit()
2153 {
2154     for ( size_t i = 0; i < WXSIZEOF(ms_hRichEdit); i++ )
2155     {
2156         if ( ms_hRichEdit[i] )
2157         {
2158             ::FreeLibrary(ms_hRichEdit[i]);
2159         }
2160     }
2161 }
2162
2163 /* static */
2164 bool wxRichEditModule::Load(int version)
2165 {
2166     // we don't support loading richedit 3.0 as I don't know how to distinguish
2167     // it from 2.0 anyhow
2168     wxCHECK_MSG( version == 1 || version == 2, FALSE,
2169                  _T("incorrect richedit control version requested") );
2170
2171     // make it the index in the array
2172     version--;
2173
2174     if ( ms_hRichEdit[version] == (HINSTANCE)-1 )
2175     {
2176         // we had already tried to load it and failed
2177         return FALSE;
2178     }
2179
2180     if ( ms_hRichEdit[version] )
2181     {
2182         // we've already got this one
2183         return TRUE;
2184     }
2185
2186     wxString dllname = version ? _T("riched20") : _T("riched32");
2187     dllname += _T(".dll");
2188
2189     ms_hRichEdit[version] = ::LoadLibrary(dllname);
2190
2191     if ( !ms_hRichEdit[version] )
2192     {
2193         wxLogSysError(_("Could not load Rich Edit DLL '%s'"), dllname.c_str());
2194
2195         ms_hRichEdit[version] = (HINSTANCE)-1;
2196
2197         return FALSE;
2198     }
2199
2200     return TRUE;
2201 }
2202
2203 #endif // wxUSE_RICHEDIT
2204
2205 #endif // wxUSE_TEXTCTRL