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 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  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         TODO PROPERTIES :
 122                 value
 123 */
 124
 125 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
 126     EVT_CHAR(wxTextCtrl::OnChar)
 127     EVT_DROP_FILES(wxTextCtrl::OnDropFiles)
 128
 129 #if wxUSE_RICHEDIT
 130     EVT_RIGHT_UP(wxTextCtrl::OnRightClick)
 131 #endif
 132
 133     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 134     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 135     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 136     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 137     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 138     EVT_MENU(wxID_CLEAR, wxTextCtrl::OnDelete)
 139     EVT_MENU(wxID_SELECTALL, wxTextCtrl::OnSelectAll)
 140
 141     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 142     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 143     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 144     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 145     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 146     EVT_UPDATE_UI(wxID_CLEAR, wxTextCtrl::OnUpdateDelete)
 147     EVT_UPDATE_UI(wxID_SELECTALL, wxTextCtrl::OnUpdateSelectAll)
 148 #ifdef __WIN16__
 149     EVT_ERASE_BACKGROUND(wxTextCtrl::OnEraseBackground)
 150 #endif
 151
 152     EVT_SET_FOCUS(wxTextCtrl::OnSetFocus)
 153 END_EVENT_TABLE()
 154
 155 // ============================================================================
 156 // implementation
 157 // ============================================================================
 158
 159 // ----------------------------------------------------------------------------
 160 // creation
 161 // ----------------------------------------------------------------------------
 162
 163 void wxTextCtrl::Init()
 164 {
 165 #if wxUSE_RICHEDIT
 166     m_verRichEdit = 0;
 167 #endif // wxUSE_RICHEDIT
 168
 169     m_privateContextMenu = NULL;
 170     m_suppressNextUpdate = FALSE;
 171     m_isNativeCaretShown = true;
 172 }
 173
 174 wxTextCtrl::~wxTextCtrl()
 175 {
 176     if (m_privateContextMenu)
 177     {
 178         delete m_privateContextMenu;
 179         m_privateContextMenu = NULL;
 180     }
 181 }
 182
 183 bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id,
 184                         const wxString& value,
 185                         const wxPoint& pos,
 186                         const wxSize& size,
 187                         long style,
 188                         const wxValidator& validator,
 189                         const wxString& name)
 190 {
 191     // base initialization
 192     if ( !CreateBase(parent, id, pos, size, style, validator, name) )
 193         return FALSE;
 194
 195     if ( parent )
 196         parent->AddChild(this);
 197
 198     // translate wxWin style flags to MSW ones
 199     WXDWORD msStyle = MSWGetCreateWindowFlags();
 200
 201     // do create the control - either an EDIT or RICHEDIT
 202     wxString windowClass = wxT("EDIT");
 203
 204 #if wxUSE_RICHEDIT
 205     if ( m_windowStyle & wxTE_AUTO_URL )
 206     {
 207         // automatic URL detection only works in RichEdit 2.0+
 208         m_windowStyle |= wxTE_RICH2;
 209     }
 210
 211     if ( m_windowStyle & wxTE_RICH2 )
 212     {
 213         // using richedit 2.0 implies using wxTE_RICH
 214         m_windowStyle |= wxTE_RICH;
 215     }
 216
 217     // we need to load the richedit DLL before creating the rich edit control
 218     if ( m_windowStyle & wxTE_RICH )
 219     {
 220         static bool s_errorGiven = FALSE;// MT-FIXME
 221
 222         // Which version do we need? Use 1.0 by default because it is much more
 223         // like the the standard EDIT or 2.0 if explicitly requested, but use
 224         // only 2.0 in Unicode mode as 1.0 doesn't support Unicode at all
 225         //
 226         // TODO: RichEdit 3.0 is apparently capable of emulating RichEdit 1.0
 227         //       (and thus EDIT) much better than RichEdit 2.0 so we probably
 228         //       should use 3.0 if available as it is the best of both worlds -
 229         //       but as I can't test it right now I don't do it (VZ)
 230 #if wxUSE_UNICODE
 231         const int verRichEdit = 2;
 232 #else // !wxUSE_UNICODE
 233         int verRichEdit = m_windowStyle & wxTE_RICH2 ? 2 : 1;
 234 #endif // wxUSE_UNICODE/!wxUSE_UNICODE
 235
 236         // only give the error msg once if the DLL can't be loaded
 237         if ( !s_errorGiven )
 238         {
 239             // try to load the RichEdit DLL (will do nothing if already done)
 240             if ( !wxRichEditModule::Load(verRichEdit) )
 241             {
 242 #if !wxUSE_UNICODE
 243                 // try another version?
 244                 verRichEdit = 3 - verRichEdit; // 1 <-> 2
 245
 246                 if ( !wxRichEditModule::Load(verRichEdit) )
 247 #endif // wxUSE_UNICODE
 248                 {
 249                     wxLogError(_("Impossible to create a rich edit control, using simple text control instead. Please reinstall riched32.dll"));
 250
 251                     s_errorGiven = TRUE;
 252                 }
 253             }
 254         }
 255
 256         // have we managed to load any richedit version?
 257         if ( !s_errorGiven )
 258         {
 259             m_verRichEdit = verRichEdit;
 260             if ( m_verRichEdit == 1 )
 261             {
 262                 windowClass = wxT("RICHEDIT");
 263             }
 264             else
 265             {
 266 #ifndef RICHEDIT_CLASS
 267                 wxString RICHEDIT_CLASS;
 268                 RICHEDIT_CLASS.Printf(_T("RichEdit%d0"), m_verRichEdit);
 269 #if wxUSE_UNICODE
 270                 RICHEDIT_CLASS += _T('W');
 271 #else // ANSI
 272                 RICHEDIT_CLASS += _T('A');
 273 #endif // Unicode/ANSI
 274 #endif // !RICHEDIT_CLASS
 275
 276                 windowClass = RICHEDIT_CLASS;
 277             }
 278         }
 279     }
 280 #endif // wxUSE_RICHEDIT
 281
 282     // we need to turn '\n's into "\r\n"s for the multiline controls
 283     wxString valueWin;
 284     if ( m_windowStyle & wxTE_MULTILINE )
 285     {
 286         valueWin = wxTextFile::Translate(value, wxTextFileType_Dos);
 287     }
 288     else // single line
 289     {
 290         valueWin = value;
 291     }
 292
 293     if ( !MSWCreateControl(windowClass, msStyle, pos, size, valueWin) )
 294         return FALSE;
 295
 296     SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
 297
 298 #if wxUSE_RICHEDIT
 299     if ( IsRich() )
 300     {
 301         // enable the events we're interested in: we want to get EN_CHANGE as
 302         // for the normal controls
 303         LPARAM mask = ENM_CHANGE;
 304
 305         if ( GetRichVersion() == 1 )
 306         {
 307             // we also need EN_MSGFILTER for richedit 1.0 for the reasons
 308             // explained in its handler
 309            mask |= ENM_MOUSEEVENTS;
 310         }
 311         else if ( m_windowStyle & wxTE_AUTO_URL )
 312         {
 313             mask |= ENM_LINK;
 314
 315             ::SendMessage(GetHwnd(), EM_AUTOURLDETECT, TRUE, 0);
 316         }
 317
 318         ::SendMessage(GetHwnd(), EM_SETEVENTMASK, 0, mask);
 319     }
 320 #endif // wxUSE_RICHEDIT
 321
 322     return TRUE;
 323 }
 324
 325 // Make sure the window style (etc.) reflects the HWND style (roughly)
 326 void wxTextCtrl::AdoptAttributesFromHWND()
 327 {
 328     wxWindow::AdoptAttributesFromHWND();
 329
 330     HWND hWnd = GetHwnd();
 331     long style = ::GetWindowLong(hWnd, GWL_STYLE);
 332
 333     // retrieve the style to see whether this is an edit or richedit ctrl
 334 #if wxUSE_RICHEDIT
 335     wxString classname = wxGetWindowClass(GetHWND());
 336
 337     if ( classname.IsSameAs(_T("EDIT"), FALSE /* no case */) )
 338     {
 339         m_verRichEdit = 0;
 340     }
 341     else // rich edit?
 342     {
 343         wxChar c;
 344         if ( wxSscanf(classname, _T("RichEdit%d0%c"), &m_verRichEdit, &c) != 2 )
 345         {
 346             wxLogDebug(_T("Unknown edit control '%s'."), classname.c_str());
 347
 348             m_verRichEdit = 0;
 349         }
 350     }
 351 #endif // wxUSE_RICHEDIT
 352
 353     if (style & ES_MULTILINE)
 354         m_windowStyle |= wxTE_MULTILINE;
 355     if (style & ES_PASSWORD)
 356         m_windowStyle |= wxTE_PASSWORD;
 357     if (style & ES_READONLY)
 358         m_windowStyle |= wxTE_READONLY;
 359     if (style & ES_WANTRETURN)
 360         m_windowStyle |= wxTE_PROCESS_ENTER;
 361     if (style & ES_CENTER)
 362         m_windowStyle |= wxTE_CENTRE;
 363     if (style & ES_RIGHT)
 364         m_windowStyle |= wxTE_RIGHT;
 365 }
 366
 367 WXDWORD wxTextCtrl::MSWGetStyle(long style, WXDWORD *exstyle) const
 368 {
 369     long msStyle = wxControl::MSWGetStyle(style, exstyle);
 370
 371     // styles which we alaways add by default
 372     if ( style & wxTE_MULTILINE )
 373     {
 374         wxASSERT_MSG( !(style & wxTE_PROCESS_ENTER),
 375                       wxT("wxTE_PROCESS_ENTER style is ignored for multiline text controls (they always process it)") );
 376
 377         msStyle |= ES_MULTILINE | ES_WANTRETURN;
 378         if ( !(style & wxTE_NO_VSCROLL) )
 379         {
 380             // always adjust the vertical scrollbar automatically if we have it
 381             msStyle |= WS_VSCROLL | ES_AUTOVSCROLL;
 382
 383 #if wxUSE_RICHEDIT
 384             // we have to use this style for the rich edit controls because
 385             // without it the vertical scrollbar never appears at all in
 386             // richedit 3.0 because of our ECO_NOHIDESEL hack (search for it)
 387             if ( style & wxTE_RICH2 )
 388             {
 389                 msStyle |= ES_DISABLENOSCROLL;
 390             }
 391 #endif // wxUSE_RICHEDIT
 392         }
 393
 394         style |= wxTE_PROCESS_ENTER;
 395     }
 396     else // !multiline
 397     {
 398         // there is really no reason to not have this style for single line
 399         // text controls
 400         msStyle |= ES_AUTOHSCROLL;
 401     }
 402
 403     // styles which we add depending on the specified wxWindows styles
 404     if ( style & wxHSCROLL )
 405     {
 406         // automatically scroll the control horizontally as necessary
 407         msStyle |= WS_HSCROLL;// | ES_AUTOHSCROLL;
 408     }
 409
 410     if ( style & wxTE_READONLY )
 411         msStyle |= ES_READONLY;
 412
 413     if ( style & wxTE_PASSWORD )
 414         msStyle |= ES_PASSWORD;
 415
 416     if ( style & wxTE_NOHIDESEL )
 417         msStyle |= ES_NOHIDESEL;
 418
 419     // note that we can't do do "& wxTE_LEFT" as wxTE_LEFT == 0
 420     if ( style & wxTE_CENTRE )
 421         msStyle |= ES_CENTER;
 422     else if ( style & wxTE_RIGHT )
 423         msStyle |= ES_RIGHT;
 424     else
 425         msStyle |= ES_LEFT; // ES_LEFT if 0 as well but for consistency...
 426
 427     return msStyle;
 428 }
 429
 430 void wxTextCtrl::SetWindowStyleFlag(long style)
 431 {
 432 #if wxUSE_RICHEDIT
 433     // we have to deal with some styles separately because they can't be
 434     // changed by simply calling SetWindowLong(GWL_STYLE) but can be changed
 435     // using richedit-specific EM_SETOPTIONS
 436     if ( IsRich() &&
 437             ((style & wxTE_NOHIDESEL) != (GetWindowStyle() & wxTE_NOHIDESEL)) )
 438     {
 439         bool set = (style & wxTE_NOHIDESEL) != 0;
 440
 441         ::SendMessage(GetHwnd(), EM_SETOPTIONS, set ? ECOOP_OR : ECOOP_AND,
 442                       set ? ECO_NOHIDESEL : ~ECO_NOHIDESEL);
 443     }
 444 #endif // wxUSE_RICHEDIT
 445
 446     wxControl::SetWindowStyleFlag(style);
 447 }
 448
 449 // ----------------------------------------------------------------------------
 450 // set/get the controls text
 451 // ----------------------------------------------------------------------------
 452
 453 wxString wxTextCtrl::GetValue() const
 454 {
 455     // range 0..-1 is special for GetRange() and means to retrieve all text
 456     return GetRange(0, -1);
 457 }
 458
 459 wxString wxTextCtrl::GetRange(long from, long to) const
 460 {
 461     wxString str;
 462
 463     if ( from >= to && to != -1 )
 464     {
 465         // nothing to retrieve
 466         return str;
 467     }
 468
 469 #if wxUSE_RICHEDIT
 470     if ( IsRich() )
 471     {
 472         int len = GetWindowTextLength(GetHwnd());
 473         if ( len > from )
 474         {
 475             {
 476                 // alloc one extra WORD as needed by the control
 477                 wxStringBuffer tmp(str, ++len);
 478                 wxChar *p = tmp;
 479
 480                 TEXTRANGE textRange;
 481                 textRange.chrg.cpMin = from;
 482                 textRange.chrg.cpMax = to == -1 ? len : to;
 483                 textRange.lpstrText = p;
 484
 485                 (void)SendMessage(GetHwnd(), EM_GETTEXTRANGE,
 486                                   0, (LPARAM)&textRange);
 487
 488                 if ( m_verRichEdit > 1 )
 489                 {
 490                     // RichEdit 2.0 uses just CR ('\r') for the
 491                     // newlines which is neither Unix nor Windows
 492                     // style - convert it to something reasonable
 493                     for ( ; *p; p++ )
 494                     {
 495                         if ( *p == _T('\r') )
 496                             *p = _T('\n');
 497                     }
 498                 }
 499             }
 500
 501             if ( m_verRichEdit == 1 )
 502             {
 503                 // convert to the canonical form - see comment below
 504                 str = wxTextFile::Translate(str, wxTextFileType_Unix);
 505             }
 506         }
 507         //else: no text at all, leave the string empty
 508     }
 509     else
 510 #endif // wxUSE_RICHEDIT
 511     {
 512         // retrieve all text
 513         str = wxGetWindowText(GetHWND());
 514
 515         // need only a range?
 516         if ( from < to )
 517         {
 518             str = str.Mid(from, to - from);
 519         }
 520
 521         // WM_GETTEXT uses standard DOS CR+LF (\r\n) convention - convert to the
 522         // canonical one (same one as above) for consistency with the other kinds
 523         // of controls and, more importantly, with the other ports
 524         str = wxTextFile::Translate(str, wxTextFileType_Unix);
 525     }
 526
 527     return str;
 528 }
 529
 530 void wxTextCtrl::SetValue(const wxString& value)
 531 {
 532     // if the text is long enough, it's faster to just set it instead of first
 533     // comparing it with the old one (chances are that it will be different
 534     // anyhow, this comparison is there to avoid flicker for small single-line
 535     // edit controls mostly)
 536     if ( (value.length() > 0x400) || (value != GetValue()) )
 537     {
 538         DoWriteText(value, FALSE /* not selection only */);
 539     }
 540     else // same text
 541     {
 542         // still send an event for consistency
 543         SendUpdateEvent();
 544     }
 545
 546     // we should reset the modified flag even if the value didn't really change
 547
 548     // mark the control as being not dirty - we changed its text, not the
 549     // user
 550     DiscardEdits();
 551
 552     // for compatibility, don't move the cursor when doing SetValue()
 553     SetInsertionPoint(0);
 554 }
 555
 556 #if wxUSE_RICHEDIT && (!wxUSE_UNICODE || wxUSE_UNICODE_MSLU)
 557
 558 DWORD CALLBACK wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb)
 559 {
 560     *pcb = 0;
 561
 562     wchar_t *wbuf = (wchar_t *)buf;
 563     const wchar_t *wpc = *(const wchar_t **)dwCookie;
 564     while ( cb && *wpc )
 565     {
 566         *wbuf++ = *wpc++;
 567
 568         cb -= sizeof(wchar_t);
 569         (*pcb) += sizeof(wchar_t);
 570     }
 571
 572     *(const wchar_t **)dwCookie = wpc;
 573
 574     return 0;
 575 }
 576
 577 // from utils.cpp
 578 extern WXDLLIMPEXP_BASE long wxEncodingToCodepage(wxFontEncoding encoding);
 579
 580 #if wxUSE_UNICODE_MSLU
 581 bool wxTextCtrl::StreamIn(const wxString& value,
 582                           wxFontEncoding WXUNUSED(encoding),
 583                           bool selectionOnly)
 584 {
 585     const wchar_t *wpc = value.c_str();
 586 #else // !wxUSE_UNICODE_MSLU
 587 bool wxTextCtrl::StreamIn(const wxString& value,
 588                           wxFontEncoding encoding,
 589                           bool selectionOnly)
 590 {
 591     // we have to use EM_STREAMIN to force richedit control 2.0+ to show any
 592     // text in the non default charset -- otherwise it thinks it knows better
 593     // than we do and always shows it in the default one
 594
 595     // first get the Windows code page for this encoding
 596     long codepage = wxEncodingToCodepage(encoding);
 597     if ( codepage == -1 )
 598     {
 599         // unknown encoding
 600         return FALSE;
 601     }
 602
 603     // next translate to Unicode using this code page
 604     int len = ::MultiByteToWideChar(codepage, 0, value, -1, NULL, 0);
 605
 606 #if wxUSE_WCHAR_T
 607     wxWCharBuffer wchBuf(len);
 608 #else
 609     wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
 610 #endif
 611
 612     if ( !::MultiByteToWideChar(codepage, 0, value, -1,
 613                                 (wchar_t *)(const wchar_t *)wchBuf, len) )
 614     {
 615         wxLogLastError(_T("MultiByteToWideChar"));
 616     }
 617
 618     // finally, stream it in the control
 619     const wchar_t *wpc = wchBuf;
 620 #endif // wxUSE_UNICODE_MSLU
 621
 622     EDITSTREAM eds;
 623     wxZeroMemory(eds);
 624     eds.dwCookie = (DWORD)&wpc;
 625     // the cast below is needed for broken (very) old mingw32 headers
 626     eds.pfnCallback = (EDITSTREAMCALLBACK)wxRichEditStreamIn;
 627
 628     // we're going to receive 2 EN_CHANGE notifications if we got any selection
 629     // (same problem as in DoWriteText())
 630     if ( selectionOnly && HasSelection() )
 631     {
 632         // so suppress one of them
 633         m_suppressNextUpdate = TRUE;
 634     }
 635
 636     ::SendMessage(GetHwnd(), EM_STREAMIN,
 637                   SF_TEXT |
 638                   SF_UNICODE |
 639                   (selectionOnly ? SFF_SELECTION : 0),
 640                   (LPARAM)&eds);
 641
 642     if ( eds.dwError )
 643     {
 644         wxLogLastError(_T("EM_STREAMIN"));
 645     }
 646
 647 #if !wxUSE_WCHAR_T
 648     free(wchBuf);
 649 #endif // !wxUSE_WCHAR_T
 650
 651     return TRUE;
 652 }
 653
 654 #endif // wxUSE_RICHEDIT
 655
 656 void wxTextCtrl::WriteText(const wxString& value)
 657 {
 658     DoWriteText(value);
 659 }
 660
 661 void wxTextCtrl::DoWriteText(const wxString& value, bool selectionOnly)
 662 {
 663     wxString valueDos;
 664     if ( m_windowStyle & wxTE_MULTILINE )
 665         valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
 666     else
 667         valueDos = value;
 668
 669 #if wxUSE_RICHEDIT
 670     // there are several complications with the rich edit controls here
 671     bool done = FALSE;
 672     if ( IsRich() )
 673     {
 674         // first, ensure that the new text will be in the default style
 675         if ( !m_defaultStyle.IsDefault() )
 676         {
 677             long start, end;
 678             GetSelection(&start, &end);
 679             SetStyle(start, end, m_defaultStyle);
 680         }
 681
 682 #if wxUSE_UNICODE_MSLU
 683         // RichEdit doesn't have Unicode version of EM_REPLACESEL on Win9x,
 684         // but EM_STREAMIN works
 685         if ( wxUsingUnicowsDll() && GetRichVersion() > 1 )
 686         {
 687            done = StreamIn(valueDos, wxFONTENCODING_SYSTEM, selectionOnly);
 688         }
 689 #endif // wxUSE_UNICODE_MSLU
 690
 691 #if !wxUSE_UNICODE
 692         // next check if the text we're inserting must be shown in a non
 693         // default charset -- this only works for RichEdit > 1.0
 694         if ( GetRichVersion() > 1 )
 695         {
 696             wxFont font = m_defaultStyle.GetFont();
 697             if ( !font.Ok() )
 698                 font = GetFont();
 699
 700             if ( font.Ok() )
 701             {
 702                wxFontEncoding encoding = font.GetEncoding();
 703                if ( encoding != wxFONTENCODING_SYSTEM )
 704                {
 705                    done = StreamIn(valueDos, encoding, selectionOnly);
 706                }
 707             }
 708         }
 709 #endif // !wxUSE_UNICODE
 710     }
 711
 712     if ( !done )
 713 #endif // wxUSE_RICHEDIT
 714     {
 715         // in some cases we get 2 EN_CHANGE notifications after the SendMessage
 716         // call below which is confusing for the client code and so should be
 717         // avoided
 718         //
 719         // these cases are: (a) plain EDIT controls if EM_REPLACESEL is used
 720         // and there is a non empty selection currently and (b) rich text
 721         // controls in any case
 722         if (
 723 #if wxUSE_RICHEDIT
 724             IsRich() ||
 725 #endif // wxUSE_RICHEDIT
 726             (selectionOnly && HasSelection()) )
 727         {
 728             m_suppressNextUpdate = TRUE;
 729         }
 730
 731         ::SendMessage(GetHwnd(), selectionOnly ? EM_REPLACESEL : WM_SETTEXT,
 732                       0, (LPARAM)valueDos.c_str());
 733
 734         // OTOH, non rich text controls don't generate any events at all when
 735         // we use WM_SETTEXT -- have to emulate them here
 736         if ( !selectionOnly
 737 #if wxUSE_RICHEDIT
 738                 && !IsRich()
 739 #endif // wxUSE_RICHEDIT
 740            )
 741         {
 742             // Windows already sends an update event for single-line
 743             // controls.
 744             if ( m_windowStyle & wxTE_MULTILINE )
 745                 SendUpdateEvent();
 746         }
 747     }
 748
 749     AdjustSpaceLimit();
 750 }
 751
 752 void wxTextCtrl::AppendText(const wxString& text)
 753 {
 754     SetInsertionPointEnd();
 755
 756     WriteText(text);
 757
 758 #if wxUSE_RICHEDIT
 759     if ( IsMultiLine() && GetRichVersion() > 1 )
 760     {
 761         // setting the caret to the end and showing it simply doesn't work for
 762         // RichEdit 2.0 -- force it to still do what we want
 763         ::SendMessage(GetHwnd(), EM_LINESCROLL, 0, GetNumberOfLines());
 764     }
 765 #endif // wxUSE_RICHEDIT
 766 }
 767
 768 void wxTextCtrl::Clear()
 769 {
 770     ::SetWindowText(GetHwnd(), wxEmptyString);
 771
 772 #if wxUSE_RICHEDIT
 773     if ( !IsRich() )
 774 #endif // wxUSE_RICHEDIT
 775     {
 776         // rich edit controls send EN_UPDATE from WM_SETTEXT handler themselves
 777         // but the normal ones don't -- make Clear() behaviour consistent by
 778         // always sending this event
 779
 780         // Windows already sends an update event for single-line
 781         // controls.
 782         if ( m_windowStyle & wxTE_MULTILINE )
 783             SendUpdateEvent();
 784     }
 785 }
 786
 787 #ifdef __WIN32__
 788
 789 bool wxTextCtrl::EmulateKeyPress(const wxKeyEvent& event)
 790 {
 791     SetFocus();
 792
 793     size_t lenOld = GetValue().length();
 794
 795     wxUint32 code = event.GetRawKeyCode();
 796     ::keybd_event(code, 0, 0 /* key press */, 0);
 797     ::keybd_event(code, 0, KEYEVENTF_KEYUP, 0);
 798
 799     // assume that any alphanumeric key changes the total number of characters
 800     // in the control - this should work in 99% of cases
 801     return GetValue().length() != lenOld;
 802 }
 803
 804 #endif // __WIN32__
 805
 806 // ----------------------------------------------------------------------------
 807 // Clipboard operations
 808 // ----------------------------------------------------------------------------
 809
 810 void wxTextCtrl::Copy()
 811 {
 812     if (CanCopy())
 813     {
 814         ::SendMessage(GetHwnd(), WM_COPY, 0, 0L);
 815     }
 816 }
 817
 818 void wxTextCtrl::Cut()
 819 {
 820     if (CanCut())
 821     {
 822         ::SendMessage(GetHwnd(), WM_CUT, 0, 0L);
 823     }
 824 }
 825
 826 void wxTextCtrl::Paste()
 827 {
 828     if (CanPaste())
 829     {
 830         ::SendMessage(GetHwnd(), WM_PASTE, 0, 0L);
 831     }
 832 }
 833
 834 bool wxTextCtrl::HasSelection() const
 835 {
 836     long from, to;
 837     GetSelection(&from, &to);
 838     return from != to;
 839 }
 840
 841 bool wxTextCtrl::CanCopy() const
 842 {
 843     // Can copy if there's a selection
 844     return HasSelection();
 845 }
 846
 847 bool wxTextCtrl::CanCut() const
 848 {
 849     return CanCopy() && IsEditable();
 850 }
 851
 852 bool wxTextCtrl::CanPaste() const
 853 {
 854     if ( !IsEditable() )
 855         return FALSE;
 856
 857 #if wxUSE_RICHEDIT
 858     if ( IsRich() )
 859     {
 860         UINT cf = 0; // 0 == any format
 861
 862         return ::SendMessage(GetHwnd(), EM_CANPASTE, cf, 0) != 0;
 863     }
 864 #endif // wxUSE_RICHEDIT
 865
 866     // Standard edit control: check for straight text on clipboard
 867     if ( !::OpenClipboard(GetHwndOf(wxTheApp->GetTopWindow())) )
 868         return FALSE;
 869
 870     bool isTextAvailable = ::IsClipboardFormatAvailable(CF_TEXT) != 0;
 871     ::CloseClipboard();
 872
 873     return isTextAvailable;
 874 }
 875
 876 // ----------------------------------------------------------------------------
 877 // Accessors
 878 // ----------------------------------------------------------------------------
 879
 880 void wxTextCtrl::SetEditable(bool editable)
 881 {
 882     HWND hWnd = GetHwnd();
 883     SendMessage(hWnd, EM_SETREADONLY, (WPARAM)!editable, (LPARAM)0L);
 884 }
 885
 886 void wxTextCtrl::SetInsertionPoint(long pos)
 887 {
 888     DoSetSelection(pos, pos);
 889 }
 890
 891 void wxTextCtrl::SetInsertionPointEnd()
 892 {
 893     // we must not do anything if the caret is already there because calling
 894     // SetInsertionPoint() thaws the controls if Freeze() had been called even
 895     // if it doesn't actually move the caret anywhere and so the simple fact of
 896     // doing it results in horrible flicker when appending big amounts of text
 897     // to the control in a few chunks (see DoAddText() test in the text sample)
 898     if ( GetInsertionPoint() == GetLastPosition() )
 899         return;
 900
 901     long pos;
 902
 903 #if wxUSE_RICHEDIT
 904     if ( m_verRichEdit == 1 )
 905     {
 906         // we don't have to waste time calling GetLastPosition() in this case
 907         pos = -1;
 908     }
 909     else // !RichEdit 1.0
 910 #endif // wxUSE_RICHEDIT
 911     {
 912         pos = GetLastPosition();
 913     }
 914
 915     SetInsertionPoint(pos);
 916 }
 917
 918 long wxTextCtrl::GetInsertionPoint() const
 919 {
 920 #if wxUSE_RICHEDIT
 921     if ( IsRich() )
 922     {
 923         CHARRANGE range;
 924         range.cpMin = 0;
 925         range.cpMax = 0;
 926         SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
 927         return range.cpMin;
 928     }
 929 #endif // wxUSE_RICHEDIT
 930
 931     DWORD Pos = (DWORD)SendMessage(GetHwnd(), EM_GETSEL, 0, 0L);
 932     return Pos & 0xFFFF;
 933 }
 934
 935 long wxTextCtrl::GetLastPosition() const
 936 {
 937     int numLines = GetNumberOfLines();
 938     long posStartLastLine = XYToPosition(0, numLines - 1);
 939
 940     long lenLastLine = GetLengthOfLineContainingPos(posStartLastLine);
 941
 942     return posStartLastLine + lenLastLine;
 943 }
 944
 945 // If the return values from and to are the same, there is no
 946 // selection.
 947 void wxTextCtrl::GetSelection(long* from, long* to) const
 948 {
 949 #if wxUSE_RICHEDIT
 950     if ( IsRich() )
 951     {
 952         CHARRANGE charRange;
 953         ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &charRange);
 954
 955         *from = charRange.cpMin;
 956         *to = charRange.cpMax;
 957     }
 958     else
 959 #endif // !wxUSE_RICHEDIT
 960     {
 961         DWORD dwStart, dwEnd;
 962         ::SendMessage(GetHwnd(), EM_GETSEL, (WPARAM)&dwStart, (LPARAM)&dwEnd);
 963
 964         *from = dwStart;
 965         *to = dwEnd;
 966     }
 967 }
 968
 969 bool wxTextCtrl::IsEditable() const
 970 {
 971     // strangely enough, we may be called before the control is created: our
 972     // own Create() calls MSWGetStyle() which calls AcceptsFocus() which calls
 973     // us
 974     if ( !m_hWnd )
 975         return TRUE;
 976
 977     long style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
 978
 979     return (style & ES_READONLY) == 0;
 980 }
 981
 982 // ----------------------------------------------------------------------------
 983 // selection
 984 // ----------------------------------------------------------------------------
 985
 986 void wxTextCtrl::SetSelection(long from, long to)
 987 {
 988     // if from and to are both -1, it means (in wxWindows) that all text should
 989     // be selected - translate into Windows convention
 990     if ( (from == -1) && (to == -1) )
 991     {
 992         from = 0;
 993         to = -1;
 994     }
 995
 996     DoSetSelection(from, to);
 997 }
 998
 999 void wxTextCtrl::DoSetSelection(long from, long to, bool scrollCaret)
1000 {
1001     HWND hWnd = GetHwnd();
1002
1003 #ifdef __WIN32__
1004 #if wxUSE_RICHEDIT
1005     if ( IsRich() )
1006     {
1007         CHARRANGE range;
1008         range.cpMin = from;
1009         range.cpMax = to;
1010         SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM) &range);
1011     }
1012     else
1013 #endif // wxUSE_RICHEDIT
1014     {
1015         SendMessage(hWnd, EM_SETSEL, (WPARAM)from, (LPARAM)to);
1016     }
1017
1018     if ( scrollCaret )
1019     {
1020 #if wxUSE_RICHEDIT
1021         // richedit 3.0 (i.e. the version living in riched20.dll distributed
1022         // with Windows 2000 and beyond) doesn't honour EM_SCROLLCARET when
1023         // emulating richedit 2.0 unless the control has focus or ECO_NOHIDESEL
1024         // option is set (but it does work ok in richedit 1.0 mode...)
1025         //
1026         // so to make it work we either need to give focus to it here which
1027         // will probably create many problems (dummy focus events; window
1028         // containing the text control being brought to foreground
1029         // unexpectedly; ...) or to temporarily set ECO_NOHIDESEL which may
1030         // create other problems too -- and in fact it does because if we turn
1031         // on/off this style while appending the text to the control, the
1032         // vertical scrollbar never appears in it even if we append tons of
1033         // text and to work around this the only solution I found was to use
1034         // ES_DISABLENOSCROLL
1035         //
1036         // this is very ugly but I don't see any other way to make this work
1037         if ( GetRichVersion() > 1 )
1038         {
1039             if ( !HasFlag(wxTE_NOHIDESEL) )
1040             {
1041                 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1042                               ECOOP_OR, ECO_NOHIDESEL);
1043             }
1044             //else: everything is already ok
1045         }
1046 #endif // wxUSE_RICHEDIT
1047
1048         SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
1049
1050 #if wxUSE_RICHEDIT
1051         // restore ECO_NOHIDESEL if we changed it
1052         if ( GetRichVersion() > 1 && !HasFlag(wxTE_NOHIDESEL) )
1053         {
1054             ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1055                           ECOOP_AND, ~ECO_NOHIDESEL);
1056         }
1057 #endif // wxUSE_RICHEDIT
1058     }
1059 #else // Win16
1060     // WPARAM is 0: selection is scrolled into view
1061     SendMessage(hWnd, EM_SETSEL, (WPARAM)0, (LPARAM)MAKELONG(from, to));
1062 #endif // Win32/16
1063 }
1064
1065 // ----------------------------------------------------------------------------
1066 // Editing
1067 // ----------------------------------------------------------------------------
1068
1069 void wxTextCtrl::Replace(long from, long to, const wxString& value)
1070 {
1071     // Set selection and remove it
1072     DoSetSelection(from, to, FALSE /* don't scroll caret into view */);
1073
1074     SendMessage(GetHwnd(), EM_REPLACESEL,
1075 #ifdef __WIN32__
1076                 TRUE,
1077 #else
1078                 FALSE,
1079 #endif
1080                 (LPARAM)value.c_str());
1081 }
1082
1083 void wxTextCtrl::Remove(long from, long to)
1084 {
1085     Replace(from, to, wxEmptyString);
1086 }
1087
1088 bool wxTextCtrl::LoadFile(const wxString& file)
1089 {
1090     if ( wxTextCtrlBase::LoadFile(file) )
1091     {
1092         // update the size limit if needed
1093         AdjustSpaceLimit();
1094
1095         return TRUE;
1096     }
1097
1098     return FALSE;
1099 }
1100
1101 bool wxTextCtrl::IsModified() const
1102 {
1103     return SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0;
1104 }
1105
1106 // Makes 'unmodified'
1107 void wxTextCtrl::DiscardEdits()
1108 {
1109     SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0L);
1110 }
1111
1112 int wxTextCtrl::GetNumberOfLines() const
1113 {
1114     return (int)SendMessage(GetHwnd(), EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0);
1115 }
1116
1117 long wxTextCtrl::XYToPosition(long x, long y) const
1118 {
1119     // This gets the char index for the _beginning_ of this line
1120     long charIndex = SendMessage(GetHwnd(), EM_LINEINDEX, (WPARAM)y, (LPARAM)0);
1121
1122     return charIndex + x;
1123 }
1124
1125 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
1126 {
1127     HWND hWnd = GetHwnd();
1128
1129     // This gets the line number containing the character
1130     long lineNo;
1131 #if wxUSE_RICHEDIT
1132     if ( IsRich() )
1133     {
1134         lineNo = SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, (LPARAM)pos);
1135     }
1136     else
1137 #endif // wxUSE_RICHEDIT
1138     {
1139         lineNo = SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, 0);
1140     }
1141
1142     if ( lineNo == -1 )
1143     {
1144         // no such line
1145         return FALSE;
1146     }
1147
1148     // This gets the char index for the _beginning_ of this line
1149     long charIndex = SendMessage(hWnd, EM_LINEINDEX, (WPARAM)lineNo, (LPARAM)0);
1150     if ( charIndex == -1 )
1151     {
1152         return FALSE;
1153     }
1154
1155     // The X position must therefore be the different between pos and charIndex
1156     if ( x )
1157         *x = pos - charIndex;
1158     if ( y )
1159         *y = lineNo;
1160
1161     return TRUE;
1162 }
1163
1164 void wxTextCtrl::ShowPosition(long pos)
1165 {
1166     HWND hWnd = GetHwnd();
1167
1168     // To scroll to a position, we pass the number of lines and characters
1169     // to scroll *by*. This means that we need to:
1170     // (1) Find the line position of the current line.
1171     // (2) Find the line position of pos.
1172     // (3) Scroll by (pos - current).
1173     // For now, ignore the horizontal scrolling.
1174
1175     // Is this where scrolling is relative to - the line containing the caret?
1176     // Or is the first visible line??? Try first visible line.
1177 //    int currentLineLineNo1 = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)-1, (LPARAM)0L);
1178
1179     int currentLineLineNo = (int)SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, (WPARAM)0, (LPARAM)0L);
1180
1181     int specifiedLineLineNo = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, (LPARAM)0L);
1182
1183     int linesToScroll = specifiedLineLineNo - currentLineLineNo;
1184
1185     if (linesToScroll != 0)
1186       (void)SendMessage(hWnd, EM_LINESCROLL, (WPARAM)0, (LPARAM)linesToScroll);
1187 }
1188
1189 long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const
1190 {
1191     return ::SendMessage(GetHwnd(), EM_LINELENGTH, (WPARAM)pos, 0);
1192 }
1193
1194 int wxTextCtrl::GetLineLength(long lineNo) const
1195 {
1196     long pos = XYToPosition(0, lineNo);
1197
1198     return GetLengthOfLineContainingPos(pos);
1199 }
1200
1201 wxString wxTextCtrl::GetLineText(long lineNo) const
1202 {
1203     size_t len = (size_t)GetLineLength(lineNo) + 1;
1204
1205     // there must be at least enough place for the length WORD in the
1206     // buffer
1207     len += sizeof(WORD);
1208
1209     wxString str;
1210     {
1211         wxStringBufferLength tmp(str, len);
1212         wxChar *buf = tmp;
1213
1214         *(WORD *)buf = (WORD)len;
1215         len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE,
1216                                     lineNo, (LPARAM)buf);
1217         buf[len] = 0;
1218         tmp.SetLength(len);
1219     }
1220
1221     return str;
1222 }
1223
1224 void wxTextCtrl::SetMaxLength(unsigned long len)
1225 {
1226     ::SendMessage(GetHwnd(), EM_LIMITTEXT, len, 0);
1227 }
1228
1229 // ----------------------------------------------------------------------------
1230 // Undo/redo
1231 // ----------------------------------------------------------------------------
1232
1233 void wxTextCtrl::Undo()
1234 {
1235     if (CanUndo())
1236     {
1237         ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1238     }
1239 }
1240
1241 void wxTextCtrl::Redo()
1242 {
1243     if (CanRedo())
1244     {
1245         // Same as Undo, since Undo undoes the undo, i.e. a redo.
1246         ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1247     }
1248 }
1249
1250 bool wxTextCtrl::CanUndo() const
1251 {
1252     return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1253 }
1254
1255 bool wxTextCtrl::CanRedo() const
1256 {
1257     return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1258 }
1259
1260 // ----------------------------------------------------------------------------
1261 // caret handling (Windows only)
1262 // ----------------------------------------------------------------------------
1263
1264 bool wxTextCtrl::ShowNativeCaret(bool show)
1265 {
1266     if ( show != m_isNativeCaretShown )
1267     {
1268         if ( !(show ? ::ShowCaret(GetHwnd()) : ::HideCaret(GetHwnd())) )
1269         {
1270             // not an error, may simply indicate that it's not shown/hidden
1271             // yet (i.e. it had been hidden/showh 2 times before)
1272             return false;
1273         }
1274
1275         m_isNativeCaretShown = show;
1276     }
1277
1278     return true;
1279 }
1280
1281 // ----------------------------------------------------------------------------
1282 // implemenation details
1283 // ----------------------------------------------------------------------------
1284
1285 void wxTextCtrl::Command(wxCommandEvent & event)
1286 {
1287     SetValue(event.GetString());
1288     ProcessCommand (event);
1289 }
1290
1291 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
1292 {
1293     // By default, load the first file into the text window.
1294     if (event.GetNumberOfFiles() > 0)
1295     {
1296         LoadFile(event.GetFiles()[0]);
1297     }
1298 }
1299
1300 // ----------------------------------------------------------------------------
1301 // kbd input processing
1302 // ----------------------------------------------------------------------------
1303
1304 bool wxTextCtrl::MSWShouldPreProcessMessage(WXMSG* pMsg)
1305 {
1306     MSG *msg = (MSG *)pMsg;
1307
1308     // check for our special keys here: if we don't do it and the parent frame
1309     // uses them as accelerators, they wouldn't work at all, so we disable
1310     // usual preprocessing for them
1311     if ( msg->message == WM_KEYDOWN )
1312     {
1313         WORD vkey = (WORD) msg->wParam;
1314         if ( (HIWORD(msg->lParam) & KF_ALTDOWN) == KF_ALTDOWN )
1315         {
1316             if ( vkey == VK_BACK )
1317                 return FALSE;
1318         }
1319         else // no Alt
1320         {
1321             // we want to process some Ctrl-foo and Shift-bar but no key
1322             // combinations without either Ctrl or Shift nor with both of them
1323             // pressed
1324             const int ctrl = wxIsCtrlDown(),
1325                       shift = wxIsShiftDown();
1326             switch ( ctrl + shift )
1327             {
1328                 default:
1329                     wxFAIL_MSG( _T("how many modifiers have we got?") );
1330                     // fall through
1331
1332                 case 0:
1333                 case 2:
1334                     break;
1335
1336                 case 1:
1337                     // either Ctrl or Shift pressed
1338                     if ( ctrl )
1339                     {
1340                         switch ( vkey )
1341                         {
1342                             case 'C':
1343                             case 'V':
1344                             case 'X':
1345                             case VK_INSERT:
1346                             case VK_DELETE:
1347                             case VK_HOME:
1348                             case VK_END:
1349                                 return FALSE;
1350                         }
1351                     }
1352                     else // Shift is pressed
1353                     {
1354                         if ( vkey == VK_INSERT || vkey == VK_DELETE )
1355                             return FALSE;
1356                     }
1357             }
1358         }
1359     }
1360
1361     return wxControl::MSWShouldPreProcessMessage(pMsg);
1362 }
1363
1364 void wxTextCtrl::OnChar(wxKeyEvent& event)
1365 {
1366     switch ( event.GetKeyCode() )
1367     {
1368         case WXK_RETURN:
1369             if ( !(m_windowStyle & wxTE_MULTILINE) )
1370             {
1371                 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1372                 InitCommandEvent(event);
1373                 event.SetString(GetValue());
1374                 if ( GetEventHandler()->ProcessEvent(event) )
1375                     return;
1376             }
1377             //else: multiline controls need Enter for themselves
1378
1379             break;
1380
1381         case WXK_TAB:
1382             // always produce navigation event - even if we process TAB
1383             // ourselves the fact that we got here means that the user code
1384             // decided to skip processing of this TAB - probably to let it
1385             // do its default job.
1386             {
1387                 wxNavigationKeyEvent eventNav;
1388                 eventNav.SetDirection(!event.ShiftDown());
1389                 eventNav.SetWindowChange(event.ControlDown());
1390                 eventNav.SetEventObject(this);
1391
1392                 if ( GetParent()->GetEventHandler()->ProcessEvent(eventNav) )
1393                     return;
1394             }
1395             break;
1396     }
1397
1398     // no, we didn't process it
1399     event.Skip();
1400 }
1401
1402 long wxTextCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
1403 {
1404     long lRc = wxTextCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
1405
1406     if ( nMsg == WM_GETDLGCODE )
1407     {
1408         // we always want the chars and the arrows: the arrows for navigation
1409         // and the chars because we want Ctrl-C to work even in a read only
1410         // control
1411         long lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
1412
1413         if ( IsEditable() )
1414         {
1415             // we may have several different cases:
1416             // 1. normal case: both TAB and ENTER are used for dlg navigation
1417             // 2. ctrl which wants TAB for itself: ENTER is used to pass to the
1418             //    next control in the dialog
1419             // 3. ctrl which wants ENTER for itself: TAB is used for dialog
1420             //    navigation
1421             // 4. ctrl which wants both TAB and ENTER: Ctrl-ENTER is used to go
1422             //    to the next control
1423
1424             // the multiline edit control should always get <Return> for itself
1425             if ( HasFlag(wxTE_PROCESS_ENTER) || HasFlag(wxTE_MULTILINE) )
1426                 lDlgCode |= DLGC_WANTMESSAGE;
1427
1428             if ( HasFlag(wxTE_PROCESS_TAB) )
1429                 lDlgCode |= DLGC_WANTTAB;
1430
1431             lRc |= lDlgCode;
1432         }
1433         else // !editable
1434         {
1435             // NB: use "=", not "|=" as the base class version returns the
1436             //     same flags is this state as usual (i.e. including
1437             //     DLGC_WANTMESSAGE). This is strange (how does it work in the
1438             //     native Win32 apps?) but for now live with it.
1439             lRc = lDlgCode;
1440         }
1441     }
1442
1443     return lRc;
1444 }
1445
1446 // ----------------------------------------------------------------------------
1447 // text control event processing
1448 // ----------------------------------------------------------------------------
1449
1450 bool wxTextCtrl::SendUpdateEvent()
1451 {
1452     // is event reporting suspended?
1453     if ( m_suppressNextUpdate )
1454     {
1455         // do process the next one
1456         m_suppressNextUpdate = FALSE;
1457
1458         return FALSE;
1459     }
1460
1461     wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, GetId());
1462     InitCommandEvent(event);
1463     event.SetString(GetValue());
1464
1465     return ProcessCommand(event);
1466 }
1467
1468 bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
1469 {
1470     switch ( param )
1471     {
1472         case EN_SETFOCUS:
1473         case EN_KILLFOCUS:
1474             {
1475                 wxFocusEvent event(param == EN_KILLFOCUS ? wxEVT_KILL_FOCUS
1476                                                          : wxEVT_SET_FOCUS,
1477                                    m_windowId);
1478                 event.SetEventObject(this);
1479                 GetEventHandler()->ProcessEvent(event);
1480             }
1481             break;
1482
1483         case EN_CHANGE:
1484             SendUpdateEvent();
1485             break;
1486
1487         case EN_MAXTEXT:
1488             // the text size limit has been hit -- try to increase it
1489             if ( !AdjustSpaceLimit() )
1490             {
1491                 wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, m_windowId);
1492                 InitCommandEvent(event);
1493                 event.SetString(GetValue());
1494                 ProcessCommand(event);
1495             }
1496             break;
1497
1498             // the other edit notification messages are not processed
1499         default:
1500             return FALSE;
1501     }
1502
1503     // processed
1504     return TRUE;
1505 }
1506
1507 WXHBRUSH wxTextCtrl::OnCtlColor(WXHDC pDC, WXHWND WXUNUSED(pWnd), WXUINT WXUNUSED(nCtlColor),
1508 #if wxUSE_CTL3D
1509                                WXUINT message,
1510                                WXWPARAM wParam,
1511                                WXLPARAM lParam
1512 #else
1513                                WXUINT WXUNUSED(message),
1514                                WXWPARAM WXUNUSED(wParam),
1515                                WXLPARAM WXUNUSED(lParam)
1516 #endif
1517     )
1518 {
1519 #if wxUSE_CTL3D
1520     if ( m_useCtl3D )
1521     {
1522         HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
1523         return (WXHBRUSH) hbrush;
1524     }
1525 #endif // wxUSE_CTL3D
1526
1527     HDC hdc = (HDC)pDC;
1528     wxColour colBack = GetBackgroundColour();
1529
1530     if (!IsEnabled() && (GetWindowStyle() & wxTE_MULTILINE) == 0)
1531         colBack = wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE);
1532
1533     ::SetBkColor(hdc, wxColourToRGB(colBack));
1534     ::SetTextColor(hdc, wxColourToRGB(GetForegroundColour()));
1535
1536     wxBrush *brush = wxTheBrushList->FindOrCreateBrush(colBack, wxSOLID);
1537
1538     return (WXHBRUSH)brush->GetResourceHandle();
1539 }
1540
1541 // In WIN16, need to override normal erasing because
1542 // Ctl3D doesn't use the wxWindows background colour.
1543 #ifdef __WIN16__
1544 void wxTextCtrl::OnEraseBackground(wxEraseEvent& event)
1545 {
1546     wxColour col(m_backgroundColour);
1547
1548 #if wxUSE_CTL3D
1549     if (m_useCtl3D)
1550         col = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
1551 #endif
1552
1553     RECT rect;
1554     ::GetClientRect(GetHwnd(), &rect);
1555
1556     COLORREF ref = wxColourToRGB(col);
1557     HBRUSH hBrush = ::CreateSolidBrush(ref);
1558     if ( !hBrush )
1559         wxLogLastError(wxT("CreateSolidBrush"));
1560
1561     HDC hdc = (HDC)event.GetDC()->GetHDC();
1562
1563     int mode = ::SetMapMode(hdc, MM_TEXT);
1564
1565     ::FillRect(hdc, &rect, hBrush);
1566     ::DeleteObject(hBrush);
1567     ::SetMapMode(hdc, mode);
1568
1569 }
1570 #endif // Win16
1571
1572 bool wxTextCtrl::AdjustSpaceLimit()
1573 {
1574 #ifndef __WIN16__
1575     unsigned int limit = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
1576
1577     // HACK: we try to automatically extend the limit for the amount of text
1578     //       to allow (interactively) entering more than 64Kb of text under
1579     //       Win9x but we shouldn't reset the text limit which was previously
1580     //       set explicitly with SetMaxLength()
1581     //
1582     //       we could solve this by storing the limit we set in wxTextCtrl but
1583     //       to save space we prefer to simply test here the actual limit
1584     //       value: we consider that SetMaxLength() can only be called for
1585     //       values < 32Kb
1586     if ( limit < 0x8000 )
1587     {
1588         // we've got more text than limit set by SetMaxLength()
1589         return FALSE;
1590     }
1591
1592     unsigned int len = ::GetWindowTextLength(GetHwnd());
1593     if ( len >= limit )
1594     {
1595         limit = len + 0x8000;    // 32Kb
1596
1597 #if wxUSE_RICHEDIT
1598         if ( IsRich() )
1599         {
1600             // as a nice side effect, this also allows passing limit > 64Kb
1601             ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, limit);
1602         }
1603         else
1604 #endif // wxUSE_RICHEDIT
1605         {
1606             if ( limit > 0xffff )
1607             {
1608                 // this will set it to a platform-dependent maximum (much more
1609                 // than 64Kb under NT)
1610                 limit = 0;
1611             }
1612
1613             ::SendMessage(GetHwnd(), EM_LIMITTEXT, limit, 0);
1614         }
1615     }
1616 #endif // !Win16
1617
1618     // we changed the limit
1619     return TRUE;
1620 }
1621
1622 bool wxTextCtrl::AcceptsFocus() const
1623 {
1624     // we don't want focus if we can't be edited unless we're a multiline
1625     // control because then it might be still nice to get focus from keyboard
1626     // to be able to scroll it without mouse
1627     return (IsEditable() || IsMultiLine()) && wxControl::AcceptsFocus();
1628 }
1629
1630 wxSize wxTextCtrl::DoGetBestSize() const
1631 {
1632     int cx, cy;
1633     wxGetCharSize(GetHWND(), &cx, &cy, &GetFont());
1634
1635     int wText = DEFAULT_ITEM_WIDTH;
1636
1637     int hText = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy);
1638     if ( m_windowStyle & wxTE_MULTILINE )
1639     {
1640         hText *= wxMax(GetNumberOfLines(), 5);
1641     }
1642     //else: for single line control everything is ok
1643
1644     return wxSize(wText, hText);
1645 }
1646
1647 // ----------------------------------------------------------------------------
1648 // standard handlers for standard edit menu events
1649 // ----------------------------------------------------------------------------
1650
1651 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1652 {
1653     Cut();
1654 }
1655
1656 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1657 {
1658     Copy();
1659 }
1660
1661 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1662 {
1663     Paste();
1664 }
1665
1666 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1667 {
1668     Undo();
1669 }
1670
1671 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1672 {
1673     Redo();
1674 }
1675
1676 void wxTextCtrl::OnDelete(wxCommandEvent& WXUNUSED(event))
1677 {
1678     long from, to;
1679     GetSelection(& from, & to);
1680     if (from != -1 && to != -1)
1681         Remove(from, to);
1682 }
1683
1684 void wxTextCtrl::OnSelectAll(wxCommandEvent& WXUNUSED(event))
1685 {
1686     SetSelection(-1, -1);
1687 }
1688
1689 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1690 {
1691     event.Enable( CanCut() );
1692 }
1693
1694 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1695 {
1696     event.Enable( CanCopy() );
1697 }
1698
1699 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1700 {
1701     event.Enable( CanPaste() );
1702 }
1703
1704 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1705 {
1706     event.Enable( CanUndo() );
1707 }
1708
1709 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1710 {
1711     event.Enable( CanRedo() );
1712 }
1713
1714 void wxTextCtrl::OnUpdateDelete(wxUpdateUIEvent& event)
1715 {
1716     long from, to;
1717     GetSelection(& from, & to);
1718     event.Enable(from != -1 && to != -1 && from != to && IsEditable()) ;
1719 }
1720
1721 void wxTextCtrl::OnUpdateSelectAll(wxUpdateUIEvent& event)
1722 {
1723     event.Enable(GetLastPosition() > 0);
1724 }
1725
1726 void wxTextCtrl::OnRightClick(wxMouseEvent& event)
1727 {
1728 #if wxUSE_RICHEDIT
1729     if (IsRich())
1730     {
1731         if (!m_privateContextMenu)
1732         {
1733             m_privateContextMenu = new wxMenu;
1734             m_privateContextMenu->Append(wxID_UNDO, _("&Undo"));
1735             m_privateContextMenu->Append(wxID_REDO, _("&Redo"));
1736             m_privateContextMenu->AppendSeparator();
1737             m_privateContextMenu->Append(wxID_CUT, _("Cu&t"));
1738             m_privateContextMenu->Append(wxID_COPY, _("&Copy"));
1739             m_privateContextMenu->Append(wxID_PASTE, _("&Paste"));
1740             m_privateContextMenu->Append(wxID_CLEAR, _("&Delete"));
1741             m_privateContextMenu->AppendSeparator();
1742             m_privateContextMenu->Append(wxID_SELECTALL, _("Select &All"));
1743         }
1744         PopupMenu(m_privateContextMenu, event.GetPosition());
1745         return;
1746     }
1747     else
1748 #endif
1749     event.Skip();
1750 }
1751
1752 void wxTextCtrl::OnSetFocus(wxFocusEvent& WXUNUSED(event))
1753 {
1754     // be sure the caret remains invisible if the user had hidden it
1755     if ( !m_isNativeCaretShown )
1756     {
1757         ::HideCaret(GetHwnd());
1758     }
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 position, wxTextAttr& style)
2135 {
2136     if ( !IsRich() )
2137     {
2138         // can't do it with normal text control
2139         return FALSE;
2140     }
2141
2142     // initialize CHARFORMAT struct
2143 #if wxUSE_RICHEDIT2
2144     CHARFORMAT2 cf;
2145 #else
2146     CHARFORMAT cf;
2147 #endif
2148
2149     wxZeroMemory(cf);
2150
2151     // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2152     // CHARFORMAT in that case
2153 #if wxUSE_RICHEDIT2
2154     if ( m_verRichEdit == 1 )
2155     {
2156         // this is the only thing the control is going to grok
2157         cf.cbSize = sizeof(CHARFORMAT);
2158     }
2159     else
2160 #endif
2161     {
2162         // CHARFORMAT or CHARFORMAT2
2163         cf.cbSize = sizeof(cf);
2164     }
2165     // we can only change the format of the selection, so select the range we
2166     // want and restore the old selection later
2167     long startOld, endOld;
2168     GetSelection(&startOld, &endOld);
2169
2170     // but do we really have to change the selection?
2171     bool changeSel = position != startOld || position != endOld;
2172
2173     if ( changeSel )
2174     {
2175         DoSetSelection(position, position, FALSE /* don't scroll caret into view */);
2176     }
2177
2178     // get the selection formatting
2179     (void) ::SendMessage(GetHwnd(), EM_GETCHARFORMAT,
2180                             SCF_SELECTION, (LPARAM)&cf) ;
2181
2182     LOGFONT lf;
2183     lf.lfHeight = cf.yHeight;
2184     lf.lfWidth = 0;
2185     lf.lfCharSet = ANSI_CHARSET; // FIXME: how to get correct charset?
2186     lf.lfClipPrecision = 0;
2187     lf.lfEscapement = 0;
2188     wxStrcpy(lf.lfFaceName, cf.szFaceName);
2189     if (cf.dwEffects & CFE_ITALIC)
2190         lf.lfItalic = TRUE;
2191     lf.lfOrientation = 0;
2192     lf.lfPitchAndFamily = cf.bPitchAndFamily;
2193     lf.lfQuality = 0;
2194     if (cf.dwEffects & CFE_STRIKEOUT)
2195         lf.lfStrikeOut = TRUE;
2196     if (cf.dwEffects & CFE_UNDERLINE)
2197         lf.lfUnderline = TRUE;
2198     if (cf.dwEffects & CFE_BOLD)
2199         lf.lfWeight = FW_BOLD;
2200
2201     wxFont font = wxCreateFontFromLogFont(& lf);
2202     if (font.Ok())
2203     {
2204         style.SetFont(font);
2205     }
2206     style.SetTextColour(wxColour(cf.crTextColor));
2207
2208 #if wxUSE_RICHEDIT2
2209     if ( m_verRichEdit != 1 )
2210     {
2211         // cf.dwMask |= CFM_BACKCOLOR;
2212         style.SetBackgroundColour(wxColour(cf.crBackColor));
2213     }
2214 #endif // wxUSE_RICHEDIT2
2215
2216     // now get the paragraph formatting
2217     PARAFORMAT2 pf;
2218     wxZeroMemory(pf);
2219     // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2220     // PARAFORMAT in that case
2221 #if wxUSE_RICHEDIT2
2222     if ( m_verRichEdit == 1 )
2223     {
2224         // this is the only thing the control is going to grok
2225         pf.cbSize = sizeof(PARAFORMAT);
2226     }
2227     else
2228 #endif
2229     {
2230         // PARAFORMAT or PARAFORMAT2
2231         pf.cbSize = sizeof(pf);
2232     }
2233
2234     // do format the selection
2235     (void) ::SendMessage(GetHwnd(), EM_GETPARAFORMAT, 0, (LPARAM) &pf) ;
2236
2237     style.SetLeftIndent( (int) ((double) pf.dxStartIndent * twips2mm * 10.0) );
2238     style.SetRightIndent( (int) ((double) pf.dxRightIndent * twips2mm * 10.0) );
2239
2240     if (pf.wAlignment == PFA_CENTER)
2241         style.SetAlignment(wxTEXT_ALIGNMENT_CENTRE);
2242     else if (pf.wAlignment == PFA_RIGHT)
2243         style.SetAlignment(wxTEXT_ALIGNMENT_RIGHT);
2244     else if (pf.wAlignment == PFA_JUSTIFY)
2245         style.SetAlignment(wxTEXT_ALIGNMENT_JUSTIFIED);
2246     else
2247         style.SetAlignment(wxTEXT_ALIGNMENT_LEFT);
2248
2249     wxArrayInt tabStops;
2250     size_t i;
2251     for (i = 0; i < (size_t) pf.cTabCount; i++)
2252     {
2253         tabStops[i] = (int) ((double) (pf.rgxTabs[i] & 0xFFFF) * twips2mm * 10.0) ;
2254     }
2255
2256     if ( changeSel )
2257     {
2258         // restore the original selection
2259         DoSetSelection(startOld, endOld, FALSE);
2260     }
2261
2262     return TRUE;
2263 }
2264
2265 #endif
2266
2267 // ----------------------------------------------------------------------------
2268 // wxRichEditModule
2269 // ----------------------------------------------------------------------------
2270
2271 bool wxRichEditModule::OnInit()
2272 {
2273     // don't do anything - we will load it when needed
2274     return TRUE;
2275 }
2276
2277 void wxRichEditModule::OnExit()
2278 {
2279     for ( size_t i = 0; i < WXSIZEOF(ms_hRichEdit); i++ )
2280     {
2281         if ( ms_hRichEdit[i] )
2282         {
2283             ::FreeLibrary(ms_hRichEdit[i]);
2284             ms_hRichEdit[i] = NULL;
2285         }
2286     }
2287 }
2288
2289 /* static */
2290 bool wxRichEditModule::Load(int version)
2291 {
2292     // we don't support loading richedit 3.0 as I don't know how to distinguish
2293     // it from 2.0 anyhow
2294     wxCHECK_MSG( version == 1 || version == 2, FALSE,
2295                  _T("incorrect richedit control version requested") );
2296
2297     // make it the index in the array
2298     version--;
2299
2300     if ( ms_hRichEdit[version] == (HINSTANCE)-1 )
2301     {
2302         // we had already tried to load it and failed
2303         return FALSE;
2304     }
2305
2306     if ( ms_hRichEdit[version] )
2307     {
2308         // we've already got this one
2309         return TRUE;
2310     }
2311
2312     wxString dllname = version ? _T("riched20") : _T("riched32");
2313     dllname += _T(".dll");
2314
2315     ms_hRichEdit[version] = ::LoadLibrary(dllname);
2316
2317     if ( !ms_hRichEdit[version] )
2318     {
2319         wxLogSysError(_("Could not load Rich Edit DLL '%s'"), dllname.c_str());
2320
2321         ms_hRichEdit[version] = (HINSTANCE)-1;
2322
2323         return FALSE;
2324     }
2325
2326     return TRUE;
2327 }
2328
2329 #endif // wxUSE_RICHEDIT
2330
2331 #endif // wxUSE_TEXTCTRL