src/msw/textctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        msw/textctrl.cpp
   3 // Purpose:     wxTextCtrl
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 #ifdef __GNUG__
  17     #pragma implementation "textctrl.h"
  18 #endif
  19
  20 // ----------------------------------------------------------------------------
  21 // headers
  22 // ----------------------------------------------------------------------------
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #if wxUSE_TEXTCTRL
  32
  33 #ifndef WX_PRECOMP
  34     #include "wx/textctrl.h"
  35     #include "wx/settings.h"
  36     #include "wx/brush.h"
  37     #include "wx/utils.h"
  38     #include "wx/intl.h"
  39     #include "wx/log.h"
  40     #include "wx/app.h"
  41     #include "wx/menu.h"
  42 #endif
  43
  44 #include "wx/module.h"
  45
  46 #if wxUSE_CLIPBOARD
  47     #include "wx/clipbrd.h"
  48 #endif
  49
  50 #include "wx/textfile.h"
  51
  52 #include <windowsx.h>
  53
  54 #include "wx/msw/private.h"
  55 #include "wx/msw/winundef.h"
  56
  57 #include <string.h>
  58 #include <stdlib.h>
  59
  60 #ifndef __WXWINCE__
  61 #include <sys/types.h>
  62 #endif
  63
  64 #if wxUSE_RICHEDIT
  65
  66 // old mingw32 has richedit stuff directly in windows.h and doesn't have
  67 // richedit.h at all
  68 #if !defined(__GNUWIN32_OLD__) || defined(__CYGWIN10__)
  69     #include <richedit.h>
  70 #endif
  71
  72 #include "wx/msw/missing.h"
  73
  74 #endif // wxUSE_RICHEDIT
  75
  76 // ----------------------------------------------------------------------------
  77 // private functions
  78 // ----------------------------------------------------------------------------
  79
  80 #if wxUSE_RICHEDIT
  81
  82 DWORD CALLBACK wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb);
  83
  84 #endif // wxUSE_RICHEDIT
  85
  86 // ----------------------------------------------------------------------------
  87 // private classes
  88 // ----------------------------------------------------------------------------
  89
  90 #if wxUSE_RICHEDIT
  91
  92 // this module initializes RichEdit DLL(s) if needed
  93 class wxRichEditModule : public wxModule
  94 {
  95 public:
  96     virtual bool OnInit();
  97     virtual void OnExit();
  98
  99     // load the richedit DLL of at least of required version
 100     static bool Load(int version = 1);
 101
 102 private:
 103     // the handles to richedit 1.0 and 2.0 (or 3.0) DLLs
 104     static HINSTANCE ms_hRichEdit[2];
 105
 106     DECLARE_DYNAMIC_CLASS(wxRichEditModule)
 107 };
 108
 109 HINSTANCE wxRichEditModule::ms_hRichEdit[2] = { NULL, NULL };
 110
 111 IMPLEMENT_DYNAMIC_CLASS(wxRichEditModule, wxModule)
 112
 113 #endif // wxUSE_RICHEDIT
 114
 115 // ----------------------------------------------------------------------------
 116 // event tables and other macros
 117 // ----------------------------------------------------------------------------
 118
 119 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxControl)
 120
 121 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
 122     EVT_CHAR(wxTextCtrl::OnChar)
 123     EVT_DROP_FILES(wxTextCtrl::OnDropFiles)
 124
 125 #if wxUSE_RICHEDIT
 126     EVT_RIGHT_UP(wxTextCtrl::OnRightClick)
 127 #endif
 128
 129     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 130     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 131     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 132     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 133     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 134     EVT_MENU(wxID_CLEAR, wxTextCtrl::OnDelete)
 135     EVT_MENU(wxID_SELECTALL, wxTextCtrl::OnSelectAll)
 136
 137     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 138     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 139     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 140     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 141     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 142     EVT_UPDATE_UI(wxID_CLEAR, wxTextCtrl::OnUpdateDelete)
 143     EVT_UPDATE_UI(wxID_SELECTALL, wxTextCtrl::OnUpdateSelectAll)
 144 #ifdef __WIN16__
 145     EVT_ERASE_BACKGROUND(wxTextCtrl::OnEraseBackground)
 146 #endif
 147
 148     EVT_SET_FOCUS(wxTextCtrl::OnSetFocus)
 149 END_EVENT_TABLE()
 150
 151 // ============================================================================
 152 // implementation
 153 // ============================================================================
 154
 155 // ----------------------------------------------------------------------------
 156 // creation
 157 // ----------------------------------------------------------------------------
 158
 159 void wxTextCtrl::Init()
 160 {
 161 #if wxUSE_RICHEDIT
 162     m_verRichEdit = 0;
 163 #endif // wxUSE_RICHEDIT
 164
 165     m_privateContextMenu = NULL;
 166     m_suppressNextUpdate = FALSE;
 167     m_isNativeCaretShown = true;
 168 }
 169
 170 wxTextCtrl::~wxTextCtrl()
 171 {
 172     if (m_privateContextMenu)
 173     {
 174         delete m_privateContextMenu;
 175         m_privateContextMenu = NULL;
 176     }
 177 }
 178
 179 bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id,
 180                         const wxString& value,
 181                         const wxPoint& pos,
 182                         const wxSize& size,
 183                         long style,
 184                         const wxValidator& validator,
 185                         const wxString& name)
 186 {
 187     // base initialization
 188     if ( !CreateBase(parent, id, pos, size, style, validator, name) )
 189         return FALSE;
 190
 191     if ( parent )
 192         parent->AddChild(this);
 193
 194     // translate wxWin style flags to MSW ones
 195     WXDWORD msStyle = MSWGetCreateWindowFlags();
 196
 197     // do create the control - either an EDIT or RICHEDIT
 198     wxString windowClass = wxT("EDIT");
 199
 200 #if wxUSE_RICHEDIT
 201     if ( m_windowStyle & wxTE_AUTO_URL )
 202     {
 203         // automatic URL detection only works in RichEdit 2.0+
 204         m_windowStyle |= wxTE_RICH2;
 205     }
 206
 207     if ( m_windowStyle & wxTE_RICH2 )
 208     {
 209         // using richedit 2.0 implies using wxTE_RICH
 210         m_windowStyle |= wxTE_RICH;
 211     }
 212
 213     // we need to load the richedit DLL before creating the rich edit control
 214     if ( m_windowStyle & wxTE_RICH )
 215     {
 216         static bool s_errorGiven = FALSE;// MT-FIXME
 217
 218         // Which version do we need? Use 1.0 by default because it is much more
 219         // like the the standard EDIT or 2.0 if explicitly requested, but use
 220         // only 2.0 in Unicode mode as 1.0 doesn't support Unicode at all
 221         //
 222         // TODO: RichEdit 3.0 is apparently capable of emulating RichEdit 1.0
 223         //       (and thus EDIT) much better than RichEdit 2.0 so we probably
 224         //       should use 3.0 if available as it is the best of both worlds -
 225         //       but as I can't test it right now I don't do it (VZ)
 226 #if wxUSE_UNICODE
 227         const int verRichEdit = 2;
 228 #else // !wxUSE_UNICODE
 229         int verRichEdit = m_windowStyle & wxTE_RICH2 ? 2 : 1;
 230 #endif // wxUSE_UNICODE/!wxUSE_UNICODE
 231
 232         // only give the error msg once if the DLL can't be loaded
 233         if ( !s_errorGiven )
 234         {
 235             // try to load the RichEdit DLL (will do nothing if already done)
 236             if ( !wxRichEditModule::Load(verRichEdit) )
 237             {
 238 #if !wxUSE_UNICODE
 239                 // try another version?
 240                 verRichEdit = 3 - verRichEdit; // 1 <-> 2
 241
 242                 if ( !wxRichEditModule::Load(verRichEdit) )
 243 #endif // wxUSE_UNICODE
 244                 {
 245                     wxLogError(_("Impossible to create a rich edit control, using simple text control instead. Please reinstall riched32.dll"));
 246
 247                     s_errorGiven = TRUE;
 248                 }
 249             }
 250         }
 251
 252         // have we managed to load any richedit version?
 253         if ( !s_errorGiven )
 254         {
 255             m_verRichEdit = verRichEdit;
 256             if ( m_verRichEdit == 1 )
 257             {
 258                 windowClass = wxT("RICHEDIT");
 259             }
 260             else
 261             {
 262 #ifndef RICHEDIT_CLASS
 263                 wxString RICHEDIT_CLASS;
 264                 RICHEDIT_CLASS.Printf(_T("RichEdit%d0"), m_verRichEdit);
 265 #if wxUSE_UNICODE
 266                 RICHEDIT_CLASS += _T('W');
 267 #else // ANSI
 268                 RICHEDIT_CLASS += _T('A');
 269 #endif // Unicode/ANSI
 270 #endif // !RICHEDIT_CLASS
 271
 272                 windowClass = RICHEDIT_CLASS;
 273             }
 274         }
 275     }
 276 #endif // wxUSE_RICHEDIT
 277
 278     // we need to turn '\n's into "\r\n"s for the multiline controls
 279     wxString valueWin;
 280     if ( m_windowStyle & wxTE_MULTILINE )
 281     {
 282         valueWin = wxTextFile::Translate(value, wxTextFileType_Dos);
 283     }
 284     else // single line
 285     {
 286         valueWin = value;
 287     }
 288
 289     if ( !MSWCreateControl(windowClass, msStyle, pos, size, valueWin) )
 290         return FALSE;
 291
 292     SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
 293
 294 #if wxUSE_RICHEDIT
 295     if ( IsRich() )
 296     {
 297         // enable the events we're interested in: we want to get EN_CHANGE as
 298         // for the normal controls
 299         LPARAM mask = ENM_CHANGE;
 300
 301         if ( GetRichVersion() == 1 )
 302         {
 303             // we also need EN_MSGFILTER for richedit 1.0 for the reasons
 304             // explained in its handler
 305            mask |= ENM_MOUSEEVENTS;
 306         }
 307         else if ( m_windowStyle & wxTE_AUTO_URL )
 308         {
 309             mask |= ENM_LINK;
 310
 311             ::SendMessage(GetHwnd(), EM_AUTOURLDETECT, TRUE, 0);
 312         }
 313
 314         ::SendMessage(GetHwnd(), EM_SETEVENTMASK, 0, mask);
 315     }
 316 #endif // wxUSE_RICHEDIT
 317
 318     return TRUE;
 319 }
 320
 321 // Make sure the window style (etc.) reflects the HWND style (roughly)
 322 void wxTextCtrl::AdoptAttributesFromHWND()
 323 {
 324     wxWindow::AdoptAttributesFromHWND();
 325
 326     HWND hWnd = GetHwnd();
 327     long style = ::GetWindowLong(hWnd, GWL_STYLE);
 328
 329     // retrieve the style to see whether this is an edit or richedit ctrl
 330 #if wxUSE_RICHEDIT
 331     wxString classname = wxGetWindowClass(GetHWND());
 332
 333     if ( classname.IsSameAs(_T("EDIT"), FALSE /* no case */) )
 334     {
 335         m_verRichEdit = 0;
 336     }
 337     else // rich edit?
 338     {
 339         wxChar c;
 340         if ( wxSscanf(classname, _T("RichEdit%d0%c"), &m_verRichEdit, &c) != 2 )
 341         {
 342             wxLogDebug(_T("Unknown edit control '%s'."), classname.c_str());
 343
 344             m_verRichEdit = 0;
 345         }
 346     }
 347 #endif // wxUSE_RICHEDIT
 348
 349     if (style & ES_MULTILINE)
 350         m_windowStyle |= wxTE_MULTILINE;
 351     if (style & ES_PASSWORD)
 352         m_windowStyle |= wxTE_PASSWORD;
 353     if (style & ES_READONLY)
 354         m_windowStyle |= wxTE_READONLY;
 355     if (style & ES_WANTRETURN)
 356         m_windowStyle |= wxTE_PROCESS_ENTER;
 357     if (style & ES_CENTER)
 358         m_windowStyle |= wxTE_CENTRE;
 359     if (style & ES_RIGHT)
 360         m_windowStyle |= wxTE_RIGHT;
 361 }
 362
 363 WXDWORD wxTextCtrl::MSWGetStyle(long style, WXDWORD *exstyle) const
 364 {
 365     long msStyle = wxControl::MSWGetStyle(style, exstyle);
 366
 367     // styles which we alaways add by default
 368     if ( style & wxTE_MULTILINE )
 369     {
 370         wxASSERT_MSG( !(style & wxTE_PROCESS_ENTER),
 371                       wxT("wxTE_PROCESS_ENTER style is ignored for multiline text controls (they always process it)") );
 372
 373         msStyle |= ES_MULTILINE | ES_WANTRETURN;
 374         if ( !(style & wxTE_NO_VSCROLL) )
 375         {
 376             // always adjust the vertical scrollbar automatically if we have it
 377             msStyle |= WS_VSCROLL | ES_AUTOVSCROLL;
 378
 379 #if wxUSE_RICHEDIT
 380             // we have to use this style for the rich edit controls because
 381             // without it the vertical scrollbar never appears at all in
 382             // richedit 3.0 because of our ECO_NOHIDESEL hack (search for it)
 383             if ( style & wxTE_RICH2 )
 384             {
 385                 msStyle |= ES_DISABLENOSCROLL;
 386             }
 387 #endif // wxUSE_RICHEDIT
 388         }
 389
 390         style |= wxTE_PROCESS_ENTER;
 391     }
 392     else // !multiline
 393     {
 394         // there is really no reason to not have this style for single line
 395         // text controls
 396         msStyle |= ES_AUTOHSCROLL;
 397     }
 398
 399     // styles which we add depending on the specified wxWindows styles
 400     if ( style & wxHSCROLL )
 401     {
 402         // automatically scroll the control horizontally as necessary
 403         msStyle |= WS_HSCROLL;// | ES_AUTOHSCROLL;
 404     }
 405
 406     if ( style & wxTE_READONLY )
 407         msStyle |= ES_READONLY;
 408
 409     if ( style & wxTE_PASSWORD )
 410         msStyle |= ES_PASSWORD;
 411
 412     if ( style & wxTE_NOHIDESEL )
 413         msStyle |= ES_NOHIDESEL;
 414
 415     // note that we can't do do "& wxTE_LEFT" as wxTE_LEFT == 0
 416     if ( style & wxTE_CENTRE )
 417         msStyle |= ES_CENTER;
 418     else if ( style & wxTE_RIGHT )
 419         msStyle |= ES_RIGHT;
 420     else
 421         msStyle |= ES_LEFT; // ES_LEFT if 0 as well but for consistency...
 422
 423     return msStyle;
 424 }
 425
 426 void wxTextCtrl::SetWindowStyleFlag(long style)
 427 {
 428 #if wxUSE_RICHEDIT
 429     // we have to deal with some styles separately because they can't be
 430     // changed by simply calling SetWindowLong(GWL_STYLE) but can be changed
 431     // using richedit-specific EM_SETOPTIONS
 432     if ( IsRich() &&
 433             ((style & wxTE_NOHIDESEL) != (GetWindowStyle() & wxTE_NOHIDESEL)) )
 434     {
 435         bool set = (style & wxTE_NOHIDESEL) != 0;
 436
 437         ::SendMessage(GetHwnd(), EM_SETOPTIONS, set ? ECOOP_OR : ECOOP_AND,
 438                       set ? ECO_NOHIDESEL : ~ECO_NOHIDESEL);
 439     }
 440 #endif // wxUSE_RICHEDIT
 441
 442     wxControl::SetWindowStyleFlag(style);
 443 }
 444
 445 // ----------------------------------------------------------------------------
 446 // set/get the controls text
 447 // ----------------------------------------------------------------------------
 448
 449 wxString wxTextCtrl::GetValue() const
 450 {
 451     // range 0..-1 is special for GetRange() and means to retrieve all text
 452     return GetRange(0, -1);
 453 }
 454
 455 wxString wxTextCtrl::GetRange(long from, long to) const
 456 {
 457     wxString str;
 458
 459     if ( from >= to && to != -1 )
 460     {
 461         // nothing to retrieve
 462         return str;
 463     }
 464
 465 #if wxUSE_RICHEDIT
 466     if ( IsRich() )
 467     {
 468         int len = GetWindowTextLength(GetHwnd());
 469         if ( len > from )
 470         {
 471             {
 472                 // alloc one extra WORD as needed by the control
 473                 wxStringBuffer tmp(str, ++len);
 474                 wxChar *p = tmp;
 475
 476                 TEXTRANGE textRange;
 477                 textRange.chrg.cpMin = from;
 478                 textRange.chrg.cpMax = to == -1 ? len : to;
 479                 textRange.lpstrText = p;
 480
 481                 (void)SendMessage(GetHwnd(), EM_GETTEXTRANGE,
 482                                   0, (LPARAM)&textRange);
 483
 484                 if ( m_verRichEdit > 1 )
 485                 {
 486                     // RichEdit 2.0 uses just CR ('\r') for the
 487                     // newlines which is neither Unix nor Windows
 488                     // style - convert it to something reasonable
 489                     for ( ; *p; p++ )
 490                     {
 491                         if ( *p == _T('\r') )
 492                             *p = _T('\n');
 493                     }
 494                 }
 495             }
 496
 497             if ( m_verRichEdit == 1 )
 498             {
 499                 // convert to the canonical form - see comment below
 500                 str = wxTextFile::Translate(str, wxTextFileType_Unix);
 501             }
 502         }
 503         //else: no text at all, leave the string empty
 504     }
 505     else
 506 #endif // wxUSE_RICHEDIT
 507     {
 508         // retrieve all text
 509         str = wxGetWindowText(GetHWND());
 510
 511         // need only a range?
 512         if ( from < to )
 513         {
 514             str = str.Mid(from, to - from);
 515         }
 516
 517         // WM_GETTEXT uses standard DOS CR+LF (\r\n) convention - convert to the
 518         // canonical one (same one as above) for consistency with the other kinds
 519         // of controls and, more importantly, with the other ports
 520         str = wxTextFile::Translate(str, wxTextFileType_Unix);
 521     }
 522
 523     return str;
 524 }
 525
 526 void wxTextCtrl::SetValue(const wxString& value)
 527 {
 528     // if the text is long enough, it's faster to just set it instead of first
 529     // comparing it with the old one (chances are that it will be different
 530     // anyhow, this comparison is there to avoid flicker for small single-line
 531     // edit controls mostly)
 532     if ( (value.length() > 0x400) || (value != GetValue()) )
 533     {
 534         DoWriteText(value, FALSE /* not selection only */);
 535     }
 536
 537     // we should reset the modified flag even if the value didn't really change
 538
 539     // mark the control as being not dirty - we changed its text, not the
 540     // user
 541     DiscardEdits();
 542
 543     // for compatibility, don't move the cursor when doing SetValue()
 544     SetInsertionPoint(0);
 545 }
 546
 547 #if wxUSE_RICHEDIT && (!wxUSE_UNICODE || wxUSE_UNICODE_MSLU)
 548
 549 DWORD CALLBACK wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb)
 550 {
 551     *pcb = 0;
 552
 553     wchar_t *wbuf = (wchar_t *)buf;
 554     const wchar_t *wpc = *(const wchar_t **)dwCookie;
 555     while ( cb && *wpc )
 556     {
 557         *wbuf++ = *wpc++;
 558
 559         cb -= sizeof(wchar_t);
 560         (*pcb) += sizeof(wchar_t);
 561     }
 562
 563     *(const wchar_t **)dwCookie = wpc;
 564
 565     return 0;
 566 }
 567
 568 // from utils.cpp
 569 extern WXDLLIMPEXP_BASE long wxEncodingToCodepage(wxFontEncoding encoding);
 570
 571 #if wxUSE_UNICODE_MSLU
 572 bool wxTextCtrl::StreamIn(const wxString& value,
 573                           wxFontEncoding WXUNUSED(encoding),
 574                           bool selectionOnly)
 575 {
 576     const wchar_t *wpc = value.c_str();
 577 #else // !wxUSE_UNICODE_MSLU
 578 bool wxTextCtrl::StreamIn(const wxString& value,
 579                           wxFontEncoding encoding,
 580                           bool selectionOnly)
 581 {
 582     // we have to use EM_STREAMIN to force richedit control 2.0+ to show any
 583     // text in the non default charset -- otherwise it thinks it knows better
 584     // than we do and always shows it in the default one
 585
 586     // first get the Windows code page for this encoding
 587     long codepage = wxEncodingToCodepage(encoding);
 588     if ( codepage == -1 )
 589     {
 590         // unknown encoding
 591         return FALSE;
 592     }
 593
 594     // next translate to Unicode using this code page
 595     int len = ::MultiByteToWideChar(codepage, 0, value, -1, NULL, 0);
 596
 597 #if wxUSE_WCHAR_T
 598     wxWCharBuffer wchBuf(len);
 599 #else
 600     wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
 601 #endif
 602
 603     if ( !::MultiByteToWideChar(codepage, 0, value, -1,
 604                                 (wchar_t *)(const wchar_t *)wchBuf, len) )
 605     {
 606         wxLogLastError(_T("MultiByteToWideChar"));
 607     }
 608
 609     // finally, stream it in the control
 610     const wchar_t *wpc = wchBuf;
 611 #endif // wxUSE_UNICODE_MSLU
 612
 613     EDITSTREAM eds;
 614     wxZeroMemory(eds);
 615     eds.dwCookie = (DWORD)&wpc;
 616     // the cast below is needed for broken (very) old mingw32 headers
 617     eds.pfnCallback = (EDITSTREAMCALLBACK)wxRichEditStreamIn;
 618
 619     // we're going to receive 2 EN_CHANGE notifications if we got any selection
 620     // (same problem as in DoWriteText())
 621     if ( selectionOnly && HasSelection() )
 622     {
 623         // so suppress one of them
 624         m_suppressNextUpdate = TRUE;
 625     }
 626
 627     ::SendMessage(GetHwnd(), EM_STREAMIN,
 628                   SF_TEXT |
 629                   SF_UNICODE |
 630                   (selectionOnly ? SFF_SELECTION : 0),
 631                   (LPARAM)&eds);
 632
 633     if ( eds.dwError )
 634     {
 635         wxLogLastError(_T("EM_STREAMIN"));
 636     }
 637
 638 #if !wxUSE_WCHAR_T
 639     free(wchBuf);
 640 #endif // !wxUSE_WCHAR_T
 641
 642     return TRUE;
 643 }
 644
 645 #endif // wxUSE_RICHEDIT
 646
 647 void wxTextCtrl::WriteText(const wxString& value)
 648 {
 649     DoWriteText(value);
 650 }
 651
 652 void wxTextCtrl::DoWriteText(const wxString& value, bool selectionOnly)
 653 {
 654     wxString valueDos;
 655     if ( m_windowStyle & wxTE_MULTILINE )
 656         valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
 657     else
 658         valueDos = value;
 659
 660 #if wxUSE_RICHEDIT
 661     // there are several complications with the rich edit controls here
 662     bool done = FALSE;
 663     if ( IsRich() )
 664     {
 665         // first, ensure that the new text will be in the default style
 666         if ( !m_defaultStyle.IsDefault() )
 667         {
 668             long start, end;
 669             GetSelection(&start, &end);
 670             SetStyle(start, end, m_defaultStyle);
 671         }
 672
 673 #if wxUSE_UNICODE_MSLU
 674         // RichEdit doesn't have Unicode version of EM_REPLACESEL on Win9x,
 675         // but EM_STREAMIN works
 676         if ( wxUsingUnicowsDll() && GetRichVersion() > 1 )
 677         {
 678            done = StreamIn(valueDos, wxFONTENCODING_SYSTEM, selectionOnly);
 679         }
 680 #endif // wxUSE_UNICODE_MSLU
 681
 682 #if !wxUSE_UNICODE
 683         // next check if the text we're inserting must be shown in a non
 684         // default charset -- this only works for RichEdit > 1.0
 685         if ( GetRichVersion() > 1 )
 686         {
 687             wxFont font = m_defaultStyle.GetFont();
 688             if ( !font.Ok() )
 689                 font = GetFont();
 690
 691             if ( font.Ok() )
 692             {
 693                wxFontEncoding encoding = font.GetEncoding();
 694                if ( encoding != wxFONTENCODING_SYSTEM )
 695                {
 696                    done = StreamIn(valueDos, encoding, selectionOnly);
 697                }
 698             }
 699         }
 700 #endif // !wxUSE_UNICODE
 701     }
 702
 703     if ( !done )
 704 #endif // wxUSE_RICHEDIT
 705     {
 706         // in some cases we get 2 EN_CHANGE notifications after the SendMessage
 707         // call below which is confusing for the client code and so should be
 708         // avoided
 709         //
 710         // these cases are: (a) plain EDIT controls if EM_REPLACESEL is used
 711         // and there is a non empty selection currently and (b) rich text
 712         // controls in any case
 713         if (
 714 #if wxUSE_RICHEDIT
 715             IsRich() ||
 716 #endif // wxUSE_RICHEDIT
 717             (selectionOnly && HasSelection()) )
 718         {
 719             m_suppressNextUpdate = TRUE;
 720         }
 721
 722         ::SendMessage(GetHwnd(), selectionOnly ? EM_REPLACESEL : WM_SETTEXT,
 723                       0, (LPARAM)valueDos.c_str());
 724
 725         // OTOH, non rich text controls don't generate any events at all when
 726         // we use WM_SETTEXT -- have to emulate them here
 727         if ( !selectionOnly
 728 #if wxUSE_RICHEDIT
 729                 && !IsRich()
 730 #endif // wxUSE_RICHEDIT
 731            )
 732         {
 733             // Windows already sends an update event for single-line
 734             // controls.
 735             if ( m_windowStyle & wxTE_MULTILINE )
 736                 SendUpdateEvent();
 737         }
 738     }
 739
 740     AdjustSpaceLimit();
 741 }
 742
 743 void wxTextCtrl::AppendText(const wxString& text)
 744 {
 745     SetInsertionPointEnd();
 746
 747     WriteText(text);
 748
 749 #if wxUSE_RICHEDIT
 750     if ( IsMultiLine() && GetRichVersion() > 1 )
 751     {
 752         // setting the caret to the end and showing it simply doesn't work for
 753         // RichEdit 2.0 -- force it to still do what we want
 754         ::SendMessage(GetHwnd(), EM_LINESCROLL, 0, GetNumberOfLines());
 755     }
 756 #endif // wxUSE_RICHEDIT
 757 }
 758
 759 void wxTextCtrl::Clear()
 760 {
 761     ::SetWindowText(GetHwnd(), wxEmptyString);
 762
 763 #if wxUSE_RICHEDIT
 764     if ( !IsRich() )
 765 #endif // wxUSE_RICHEDIT
 766     {
 767         // rich edit controls send EN_UPDATE from WM_SETTEXT handler themselves
 768         // but the normal ones don't -- make Clear() behaviour consistent by
 769         // always sending this event
 770
 771         // Windows already sends an update event for single-line
 772         // controls.
 773         if ( m_windowStyle & wxTE_MULTILINE )
 774             SendUpdateEvent();
 775     }
 776 }
 777
 778 #ifdef __WIN32__
 779
 780 bool wxTextCtrl::EmulateKeyPress(const wxKeyEvent& event)
 781 {
 782     SetFocus();
 783
 784     size_t lenOld = GetValue().length();
 785
 786     wxUint32 code = event.GetRawKeyCode();
 787     ::keybd_event(code, 0, 0 /* key press */, 0);
 788     ::keybd_event(code, 0, KEYEVENTF_KEYUP, 0);
 789
 790     // assume that any alphanumeric key changes the total number of characters
 791     // in the control - this should work in 99% of cases
 792     return GetValue().length() != lenOld;
 793 }
 794
 795 #endif // __WIN32__
 796
 797 // ----------------------------------------------------------------------------
 798 // Clipboard operations
 799 // ----------------------------------------------------------------------------
 800
 801 void wxTextCtrl::Copy()
 802 {
 803     if (CanCopy())
 804     {
 805         ::SendMessage(GetHwnd(), WM_COPY, 0, 0L);
 806     }
 807 }
 808
 809 void wxTextCtrl::Cut()
 810 {
 811     if (CanCut())
 812     {
 813         ::SendMessage(GetHwnd(), WM_CUT, 0, 0L);
 814     }
 815 }
 816
 817 void wxTextCtrl::Paste()
 818 {
 819     if (CanPaste())
 820     {
 821         ::SendMessage(GetHwnd(), WM_PASTE, 0, 0L);
 822     }
 823 }
 824
 825 bool wxTextCtrl::HasSelection() const
 826 {
 827     long from, to;
 828     GetSelection(&from, &to);
 829     return from != to;
 830 }
 831
 832 bool wxTextCtrl::CanCopy() const
 833 {
 834     // Can copy if there's a selection
 835     return HasSelection();
 836 }
 837
 838 bool wxTextCtrl::CanCut() const
 839 {
 840     return CanCopy() && IsEditable();
 841 }
 842
 843 bool wxTextCtrl::CanPaste() const
 844 {
 845     if ( !IsEditable() )
 846         return FALSE;
 847
 848 #if wxUSE_RICHEDIT
 849     if ( IsRich() )
 850     {
 851         UINT cf = 0; // 0 == any format
 852
 853         return ::SendMessage(GetHwnd(), EM_CANPASTE, cf, 0) != 0;
 854     }
 855 #endif // wxUSE_RICHEDIT
 856
 857     // Standard edit control: check for straight text on clipboard
 858     if ( !::OpenClipboard(GetHwndOf(wxTheApp->GetTopWindow())) )
 859         return FALSE;
 860
 861     bool isTextAvailable = ::IsClipboardFormatAvailable(CF_TEXT) != 0;
 862     ::CloseClipboard();
 863
 864     return isTextAvailable;
 865 }
 866
 867 // ----------------------------------------------------------------------------
 868 // Accessors
 869 // ----------------------------------------------------------------------------
 870
 871 void wxTextCtrl::SetEditable(bool editable)
 872 {
 873     HWND hWnd = GetHwnd();
 874     SendMessage(hWnd, EM_SETREADONLY, (WPARAM)!editable, (LPARAM)0L);
 875 }
 876
 877 void wxTextCtrl::SetInsertionPoint(long pos)
 878 {
 879     DoSetSelection(pos, pos);
 880 }
 881
 882 void wxTextCtrl::SetInsertionPointEnd()
 883 {
 884     // we must not do anything if the caret is already there because calling
 885     // SetInsertionPoint() thaws the controls if Freeze() had been called even
 886     // if it doesn't actually move the caret anywhere and so the simple fact of
 887     // doing it results in horrible flicker when appending big amounts of text
 888     // to the control in a few chunks (see DoAddText() test in the text sample)
 889     if ( GetInsertionPoint() == GetLastPosition() )
 890         return;
 891
 892     long pos;
 893
 894 #if wxUSE_RICHEDIT
 895     if ( m_verRichEdit == 1 )
 896     {
 897         // we don't have to waste time calling GetLastPosition() in this case
 898         pos = -1;
 899     }
 900     else // !RichEdit 1.0
 901 #endif // wxUSE_RICHEDIT
 902     {
 903         pos = GetLastPosition();
 904     }
 905
 906     SetInsertionPoint(pos);
 907 }
 908
 909 long wxTextCtrl::GetInsertionPoint() const
 910 {
 911 #if wxUSE_RICHEDIT
 912     if ( IsRich() )
 913     {
 914         CHARRANGE range;
 915         range.cpMin = 0;
 916         range.cpMax = 0;
 917         SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
 918         return range.cpMin;
 919     }
 920 #endif // wxUSE_RICHEDIT
 921
 922     DWORD Pos = (DWORD)SendMessage(GetHwnd(), EM_GETSEL, 0, 0L);
 923     return Pos & 0xFFFF;
 924 }
 925
 926 long wxTextCtrl::GetLastPosition() const
 927 {
 928     int numLines = GetNumberOfLines();
 929     long posStartLastLine = XYToPosition(0, numLines - 1);
 930
 931     long lenLastLine = GetLengthOfLineContainingPos(posStartLastLine);
 932
 933     return posStartLastLine + lenLastLine;
 934 }
 935
 936 // If the return values from and to are the same, there is no
 937 // selection.
 938 void wxTextCtrl::GetSelection(long* from, long* to) const
 939 {
 940 #if wxUSE_RICHEDIT
 941     if ( IsRich() )
 942     {
 943         CHARRANGE charRange;
 944         ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &charRange);
 945
 946         *from = charRange.cpMin;
 947         *to = charRange.cpMax;
 948     }
 949     else
 950 #endif // !wxUSE_RICHEDIT
 951     {
 952         DWORD dwStart, dwEnd;
 953         ::SendMessage(GetHwnd(), EM_GETSEL, (WPARAM)&dwStart, (LPARAM)&dwEnd);
 954
 955         *from = dwStart;
 956         *to = dwEnd;
 957     }
 958 }
 959
 960 bool wxTextCtrl::IsEditable() const
 961 {
 962     // strangely enough, we may be called before the control is created: our
 963     // own Create() calls MSWGetStyle() which calls AcceptsFocus() which calls
 964     // us
 965     if ( !m_hWnd )
 966         return TRUE;
 967
 968     long style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
 969
 970     return (style & ES_READONLY) == 0;
 971 }
 972
 973 // ----------------------------------------------------------------------------
 974 // selection
 975 // ----------------------------------------------------------------------------
 976
 977 void wxTextCtrl::SetSelection(long from, long to)
 978 {
 979     // if from and to are both -1, it means (in wxWindows) that all text should
 980     // be selected - translate into Windows convention
 981     if ( (from == -1) && (to == -1) )
 982     {
 983         from = 0;
 984         to = -1;
 985     }
 986
 987     DoSetSelection(from, to);
 988 }
 989
 990 void wxTextCtrl::DoSetSelection(long from, long to, bool scrollCaret)
 991 {
 992     HWND hWnd = GetHwnd();
 993
 994 #ifdef __WIN32__
 995 #if wxUSE_RICHEDIT
 996     if ( IsRich() )
 997     {
 998         CHARRANGE range;
 999         range.cpMin = from;
1000         range.cpMax = to;
1001         SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM) &range);
1002     }
1003     else
1004 #endif // wxUSE_RICHEDIT
1005     {
1006         SendMessage(hWnd, EM_SETSEL, (WPARAM)from, (LPARAM)to);
1007     }
1008
1009     if ( scrollCaret )
1010     {
1011 #if wxUSE_RICHEDIT
1012         // richedit 3.0 (i.e. the version living in riched20.dll distributed
1013         // with Windows 2000 and beyond) doesn't honour EM_SCROLLCARET when
1014         // emulating richedit 2.0 unless the control has focus or ECO_NOHIDESEL
1015         // option is set (but it does work ok in richedit 1.0 mode...)
1016         //
1017         // so to make it work we either need to give focus to it here which
1018         // will probably create many problems (dummy focus events; window
1019         // containing the text control being brought to foreground
1020         // unexpectedly; ...) or to temporarily set ECO_NOHIDESEL which may
1021         // create other problems too -- and in fact it does because if we turn
1022         // on/off this style while appending the text to the control, the
1023         // vertical scrollbar never appears in it even if we append tons of
1024         // text and to work around this the only solution I found was to use
1025         // ES_DISABLENOSCROLL
1026         //
1027         // this is very ugly but I don't see any other way to make this work
1028         if ( GetRichVersion() > 1 )
1029         {
1030             if ( !HasFlag(wxTE_NOHIDESEL) )
1031             {
1032                 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1033                               ECOOP_OR, ECO_NOHIDESEL);
1034             }
1035             //else: everything is already ok
1036         }
1037 #endif // wxUSE_RICHEDIT
1038
1039         SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
1040
1041 #if wxUSE_RICHEDIT
1042         // restore ECO_NOHIDESEL if we changed it
1043         if ( GetRichVersion() > 1 && !HasFlag(wxTE_NOHIDESEL) )
1044         {
1045             ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1046                           ECOOP_AND, ~ECO_NOHIDESEL);
1047         }
1048 #endif // wxUSE_RICHEDIT
1049     }
1050 #else // Win16
1051     // WPARAM is 0: selection is scrolled into view
1052     SendMessage(hWnd, EM_SETSEL, (WPARAM)0, (LPARAM)MAKELONG(from, to));
1053 #endif // Win32/16
1054 }
1055
1056 // ----------------------------------------------------------------------------
1057 // Editing
1058 // ----------------------------------------------------------------------------
1059
1060 void wxTextCtrl::Replace(long from, long to, const wxString& value)
1061 {
1062     // Set selection and remove it
1063     DoSetSelection(from, to, FALSE /* don't scroll caret into view */);
1064
1065     SendMessage(GetHwnd(), EM_REPLACESEL,
1066 #ifdef __WIN32__
1067                 TRUE,
1068 #else
1069                 FALSE,
1070 #endif
1071                 (LPARAM)value.c_str());
1072 }
1073
1074 void wxTextCtrl::Remove(long from, long to)
1075 {
1076     Replace(from, to, wxEmptyString);
1077 }
1078
1079 bool wxTextCtrl::LoadFile(const wxString& file)
1080 {
1081     if ( wxTextCtrlBase::LoadFile(file) )
1082     {
1083         // update the size limit if needed
1084         AdjustSpaceLimit();
1085
1086         return TRUE;
1087     }
1088
1089     return FALSE;
1090 }
1091
1092 bool wxTextCtrl::IsModified() const
1093 {
1094     return SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0;
1095 }
1096
1097 // Makes 'unmodified'
1098 void wxTextCtrl::DiscardEdits()
1099 {
1100     SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0L);
1101 }
1102
1103 int wxTextCtrl::GetNumberOfLines() const
1104 {
1105     return (int)SendMessage(GetHwnd(), EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0);
1106 }
1107
1108 long wxTextCtrl::XYToPosition(long x, long y) const
1109 {
1110     // This gets the char index for the _beginning_ of this line
1111     long charIndex = SendMessage(GetHwnd(), EM_LINEINDEX, (WPARAM)y, (LPARAM)0);
1112
1113     return charIndex + x;
1114 }
1115
1116 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
1117 {
1118     HWND hWnd = GetHwnd();
1119
1120     // This gets the line number containing the character
1121     long lineNo;
1122 #if wxUSE_RICHEDIT
1123     if ( IsRich() )
1124     {
1125         lineNo = SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, (LPARAM)pos);
1126     }
1127     else
1128 #endif // wxUSE_RICHEDIT
1129     {
1130         lineNo = SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, 0);
1131     }
1132
1133     if ( lineNo == -1 )
1134     {
1135         // no such line
1136         return FALSE;
1137     }
1138
1139     // This gets the char index for the _beginning_ of this line
1140     long charIndex = SendMessage(hWnd, EM_LINEINDEX, (WPARAM)lineNo, (LPARAM)0);
1141     if ( charIndex == -1 )
1142     {
1143         return FALSE;
1144     }
1145
1146     // The X position must therefore be the different between pos and charIndex
1147     if ( x )
1148         *x = pos - charIndex;
1149     if ( y )
1150         *y = lineNo;
1151
1152     return TRUE;
1153 }
1154
1155 void wxTextCtrl::ShowPosition(long pos)
1156 {
1157     HWND hWnd = GetHwnd();
1158
1159     // To scroll to a position, we pass the number of lines and characters
1160     // to scroll *by*. This means that we need to:
1161     // (1) Find the line position of the current line.
1162     // (2) Find the line position of pos.
1163     // (3) Scroll by (pos - current).
1164     // For now, ignore the horizontal scrolling.
1165
1166     // Is this where scrolling is relative to - the line containing the caret?
1167     // Or is the first visible line??? Try first visible line.
1168 //    int currentLineLineNo1 = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)-1, (LPARAM)0L);
1169
1170     int currentLineLineNo = (int)SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, (WPARAM)0, (LPARAM)0L);
1171
1172     int specifiedLineLineNo = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, (LPARAM)0L);
1173
1174     int linesToScroll = specifiedLineLineNo - currentLineLineNo;
1175
1176     if (linesToScroll != 0)
1177       (void)SendMessage(hWnd, EM_LINESCROLL, (WPARAM)0, (LPARAM)linesToScroll);
1178 }
1179
1180 long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const
1181 {
1182     return ::SendMessage(GetHwnd(), EM_LINELENGTH, (WPARAM)pos, 0);
1183 }
1184
1185 int wxTextCtrl::GetLineLength(long lineNo) const
1186 {
1187     long pos = XYToPosition(0, lineNo);
1188
1189     return GetLengthOfLineContainingPos(pos);
1190 }
1191
1192 wxString wxTextCtrl::GetLineText(long lineNo) const
1193 {
1194     size_t len = (size_t)GetLineLength(lineNo) + 1;
1195
1196     // there must be at least enough place for the length WORD in the
1197     // buffer
1198     len += sizeof(WORD);
1199
1200     wxString str;
1201     {
1202         wxStringBufferLength tmp(str, len);
1203         wxChar *buf = tmp;
1204
1205         *(WORD *)buf = (WORD)len;
1206         len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE,
1207                                     lineNo, (LPARAM)buf);
1208         buf[len] = 0;
1209         tmp.SetLength(len);
1210     }
1211
1212     return str;
1213 }
1214
1215 void wxTextCtrl::SetMaxLength(unsigned long len)
1216 {
1217     ::SendMessage(GetHwnd(), EM_LIMITTEXT, len, 0);
1218 }
1219
1220 // ----------------------------------------------------------------------------
1221 // Undo/redo
1222 // ----------------------------------------------------------------------------
1223
1224 void wxTextCtrl::Undo()
1225 {
1226     if (CanUndo())
1227     {
1228         ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1229     }
1230 }
1231
1232 void wxTextCtrl::Redo()
1233 {
1234     if (CanRedo())
1235     {
1236         // Same as Undo, since Undo undoes the undo, i.e. a redo.
1237         ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1238     }
1239 }
1240
1241 bool wxTextCtrl::CanUndo() const
1242 {
1243     return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1244 }
1245
1246 bool wxTextCtrl::CanRedo() const
1247 {
1248     return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1249 }
1250
1251 // ----------------------------------------------------------------------------
1252 // caret handling (Windows only)
1253 // ----------------------------------------------------------------------------
1254
1255 bool wxTextCtrl::ShowNativeCaret(bool show)
1256 {
1257     if ( show != m_isNativeCaretShown )
1258     {
1259         if ( !(show ? ::ShowCaret(GetHwnd()) : ::HideCaret(GetHwnd())) )
1260         {
1261             // not an error, may simply indicate that it's not shown/hidden
1262             // yet (i.e. it had been hidden/showh 2 times before)
1263             return false;
1264         }
1265
1266         m_isNativeCaretShown = show;
1267     }
1268
1269     return true;
1270 }
1271
1272 // ----------------------------------------------------------------------------
1273 // implemenation details
1274 // ----------------------------------------------------------------------------
1275
1276 void wxTextCtrl::Command(wxCommandEvent & event)
1277 {
1278     SetValue(event.GetString());
1279     ProcessCommand (event);
1280 }
1281
1282 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
1283 {
1284     // By default, load the first file into the text window.
1285     if (event.GetNumberOfFiles() > 0)
1286     {
1287         LoadFile(event.GetFiles()[0]);
1288     }
1289 }
1290
1291 // ----------------------------------------------------------------------------
1292 // kbd input processing
1293 // ----------------------------------------------------------------------------
1294
1295 bool wxTextCtrl::MSWShouldPreProcessMessage(WXMSG* pMsg)
1296 {
1297     MSG *msg = (MSG *)pMsg;
1298
1299     // check for our special keys here: if we don't do it and the parent frame
1300     // uses them as accelerators, they wouldn't work at all, so we disable
1301     // usual preprocessing for them
1302     if ( msg->message == WM_KEYDOWN )
1303     {
1304         WORD vkey = (WORD) msg->wParam;
1305         if ( (HIWORD(msg->lParam) & KF_ALTDOWN) == KF_ALTDOWN )
1306         {
1307             if ( vkey == VK_BACK )
1308                 return FALSE;
1309         }
1310         else // no Alt
1311         {
1312             // we want to process some Ctrl-foo and Shift-bar but no key
1313             // combinations without either Ctrl or Shift nor with both of them
1314             // pressed
1315             const int ctrl = wxIsCtrlDown(),
1316                       shift = wxIsShiftDown();
1317             switch ( ctrl + shift )
1318             {
1319                 default:
1320                     wxFAIL_MSG( _T("how many modifiers have we got?") );
1321                     // fall through
1322
1323                 case 0:
1324                 case 2:
1325                     break;
1326
1327                 case 1:
1328                     // either Ctrl or Shift pressed
1329                     if ( ctrl )
1330                     {
1331                         switch ( vkey )
1332                         {
1333                             case 'C':
1334                             case 'V':
1335                             case 'X':
1336                             case VK_INSERT:
1337                             case VK_DELETE:
1338                             case VK_HOME:
1339                             case VK_END:
1340                                 return FALSE;
1341                         }
1342                     }
1343                     else // Shift is pressed
1344                     {
1345                         if ( vkey == VK_INSERT || vkey == VK_DELETE )
1346                             return FALSE;
1347                     }
1348             }
1349         }
1350     }
1351
1352     return wxControl::MSWShouldPreProcessMessage(pMsg);
1353 }
1354
1355 void wxTextCtrl::OnChar(wxKeyEvent& event)
1356 {
1357     switch ( event.GetKeyCode() )
1358     {
1359         case WXK_RETURN:
1360             if ( !(m_windowStyle & wxTE_MULTILINE) )
1361             {
1362                 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1363                 InitCommandEvent(event);
1364                 event.SetString(GetValue());
1365                 if ( GetEventHandler()->ProcessEvent(event) )
1366                     return;
1367             }
1368             //else: multiline controls need Enter for themselves
1369
1370             break;
1371
1372         case WXK_TAB:
1373             // always produce navigation event - even if we process TAB
1374             // ourselves the fact that we got here means that the user code
1375             // decided to skip processing of this TAB - probably to let it
1376             // do its default job.
1377             {
1378                 wxNavigationKeyEvent eventNav;
1379                 eventNav.SetDirection(!event.ShiftDown());
1380                 eventNav.SetWindowChange(event.ControlDown());
1381                 eventNav.SetEventObject(this);
1382
1383                 if ( GetParent()->GetEventHandler()->ProcessEvent(eventNav) )
1384                     return;
1385             }
1386             break;
1387     }
1388
1389     // no, we didn't process it
1390     event.Skip();
1391 }
1392
1393 long wxTextCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
1394 {
1395     long lRc = wxTextCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
1396
1397     if ( nMsg == WM_GETDLGCODE )
1398     {
1399         // we always want the chars and the arrows: the arrows for navigation
1400         // and the chars because we want Ctrl-C to work even in a read only
1401         // control
1402         long lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
1403
1404         if ( IsEditable() )
1405         {
1406             // we may have several different cases:
1407             // 1. normal case: both TAB and ENTER are used for dlg navigation
1408             // 2. ctrl which wants TAB for itself: ENTER is used to pass to the
1409             //    next control in the dialog
1410             // 3. ctrl which wants ENTER for itself: TAB is used for dialog
1411             //    navigation
1412             // 4. ctrl which wants both TAB and ENTER: Ctrl-ENTER is used to go
1413             //    to the next control
1414
1415             // the multiline edit control should always get <Return> for itself
1416             if ( HasFlag(wxTE_PROCESS_ENTER) || HasFlag(wxTE_MULTILINE) )
1417                 lDlgCode |= DLGC_WANTMESSAGE;
1418
1419             if ( HasFlag(wxTE_PROCESS_TAB) )
1420                 lDlgCode |= DLGC_WANTTAB;
1421
1422             lRc |= lDlgCode;
1423         }
1424         else // !editable
1425         {
1426             // NB: use "=", not "|=" as the base class version returns the
1427             //     same flags is this state as usual (i.e. including
1428             //     DLGC_WANTMESSAGE). This is strange (how does it work in the
1429             //     native Win32 apps?) but for now live with it.
1430             lRc = lDlgCode;
1431         }
1432     }
1433
1434     return lRc;
1435 }
1436
1437 // ----------------------------------------------------------------------------
1438 // text control event processing
1439 // ----------------------------------------------------------------------------
1440
1441 bool wxTextCtrl::SendUpdateEvent()
1442 {
1443     // is event reporting suspended?
1444     if ( m_suppressNextUpdate )
1445     {
1446         // do process the next one
1447         m_suppressNextUpdate = FALSE;
1448
1449         return FALSE;
1450     }
1451
1452     wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, GetId());
1453     InitCommandEvent(event);
1454     event.SetString(GetValue());
1455
1456     return ProcessCommand(event);
1457 }
1458
1459 bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
1460 {
1461     switch ( param )
1462     {
1463         case EN_SETFOCUS:
1464         case EN_KILLFOCUS:
1465             {
1466                 wxFocusEvent event(param == EN_KILLFOCUS ? wxEVT_KILL_FOCUS
1467                                                          : wxEVT_SET_FOCUS,
1468                                    m_windowId);
1469                 event.SetEventObject(this);
1470                 GetEventHandler()->ProcessEvent(event);
1471             }
1472             break;
1473
1474         case EN_CHANGE:
1475             SendUpdateEvent();
1476             break;
1477
1478         case EN_MAXTEXT:
1479             // the text size limit has been hit -- try to increase it
1480             if ( !AdjustSpaceLimit() )
1481             {
1482                 wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, m_windowId);
1483                 InitCommandEvent(event);
1484                 event.SetString(GetValue());
1485                 ProcessCommand(event);
1486             }
1487             break;
1488
1489             // the other edit notification messages are not processed
1490         default:
1491             return FALSE;
1492     }
1493
1494     // processed
1495     return TRUE;
1496 }
1497
1498 WXHBRUSH wxTextCtrl::OnCtlColor(WXHDC pDC, WXHWND WXUNUSED(pWnd), WXUINT WXUNUSED(nCtlColor),
1499 #if wxUSE_CTL3D
1500                                WXUINT message,
1501                                WXWPARAM wParam,
1502                                WXLPARAM lParam
1503 #else
1504                                WXUINT WXUNUSED(message),
1505                                WXWPARAM WXUNUSED(wParam),
1506                                WXLPARAM WXUNUSED(lParam)
1507 #endif
1508     )
1509 {
1510 #if wxUSE_CTL3D
1511     if ( m_useCtl3D )
1512     {
1513         HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
1514         return (WXHBRUSH) hbrush;
1515     }
1516 #endif // wxUSE_CTL3D
1517
1518     HDC hdc = (HDC)pDC;
1519     wxColour colBack = GetBackgroundColour();
1520
1521     if (!IsEnabled() && (GetWindowStyle() & wxTE_MULTILINE) == 0)
1522         colBack = wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE);
1523
1524     ::SetBkColor(hdc, wxColourToRGB(colBack));
1525     ::SetTextColor(hdc, wxColourToRGB(GetForegroundColour()));
1526
1527     wxBrush *brush = wxTheBrushList->FindOrCreateBrush(colBack, wxSOLID);
1528
1529     return (WXHBRUSH)brush->GetResourceHandle();
1530 }
1531
1532 // In WIN16, need to override normal erasing because
1533 // Ctl3D doesn't use the wxWindows background colour.
1534 #ifdef __WIN16__
1535 void wxTextCtrl::OnEraseBackground(wxEraseEvent& event)
1536 {
1537     wxColour col(m_backgroundColour);
1538
1539 #if wxUSE_CTL3D
1540     if (m_useCtl3D)
1541         col = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
1542 #endif
1543
1544     RECT rect;
1545     ::GetClientRect(GetHwnd(), &rect);
1546
1547     COLORREF ref = wxColourToRGB(col);
1548     HBRUSH hBrush = ::CreateSolidBrush(ref);
1549     if ( !hBrush )
1550         wxLogLastError(wxT("CreateSolidBrush"));
1551
1552     HDC hdc = (HDC)event.GetDC()->GetHDC();
1553
1554     int mode = ::SetMapMode(hdc, MM_TEXT);
1555
1556     ::FillRect(hdc, &rect, hBrush);
1557     ::DeleteObject(hBrush);
1558     ::SetMapMode(hdc, mode);
1559
1560 }
1561 #endif // Win16
1562
1563 bool wxTextCtrl::AdjustSpaceLimit()
1564 {
1565 #ifndef __WIN16__
1566     unsigned int limit = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
1567
1568     // HACK: we try to automatically extend the limit for the amount of text
1569     //       to allow (interactively) entering more than 64Kb of text under
1570     //       Win9x but we shouldn't reset the text limit which was previously
1571     //       set explicitly with SetMaxLength()
1572     //
1573     //       we could solve this by storing the limit we set in wxTextCtrl but
1574     //       to save space we prefer to simply test here the actual limit
1575     //       value: we consider that SetMaxLength() can only be called for
1576     //       values < 32Kb
1577     if ( limit < 0x8000 )
1578     {
1579         // we've got more text than limit set by SetMaxLength()
1580         return FALSE;
1581     }
1582
1583     unsigned int len = ::GetWindowTextLength(GetHwnd());
1584     if ( len >= limit )
1585     {
1586         limit = len + 0x8000;    // 32Kb
1587
1588 #if wxUSE_RICHEDIT
1589         if ( IsRich() )
1590         {
1591             // as a nice side effect, this also allows passing limit > 64Kb
1592             ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, limit);
1593         }
1594         else
1595 #endif // wxUSE_RICHEDIT
1596         {
1597             if ( limit > 0xffff )
1598             {
1599                 // this will set it to a platform-dependent maximum (much more
1600                 // than 64Kb under NT)
1601                 limit = 0;
1602             }
1603
1604             ::SendMessage(GetHwnd(), EM_LIMITTEXT, limit, 0);
1605         }
1606     }
1607 #endif // !Win16
1608
1609     // we changed the limit
1610     return TRUE;
1611 }
1612
1613 bool wxTextCtrl::AcceptsFocus() const
1614 {
1615     // we don't want focus if we can't be edited unless we're a multiline
1616     // control because then it might be still nice to get focus from keyboard
1617     // to be able to scroll it without mouse
1618     return (IsEditable() || IsMultiLine()) && wxControl::AcceptsFocus();
1619 }
1620
1621 wxSize wxTextCtrl::DoGetBestSize() const
1622 {
1623     int cx, cy;
1624     wxGetCharSize(GetHWND(), &cx, &cy, &GetFont());
1625
1626     int wText = DEFAULT_ITEM_WIDTH;
1627
1628     int hText = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy);
1629     if ( m_windowStyle & wxTE_MULTILINE )
1630     {
1631         hText *= wxMax(GetNumberOfLines(), 5);
1632     }
1633     //else: for single line control everything is ok
1634
1635     return wxSize(wText, hText);
1636 }
1637
1638 // ----------------------------------------------------------------------------
1639 // standard handlers for standard edit menu events
1640 // ----------------------------------------------------------------------------
1641
1642 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1643 {
1644     Cut();
1645 }
1646
1647 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1648 {
1649     Copy();
1650 }
1651
1652 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1653 {
1654     Paste();
1655 }
1656
1657 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1658 {
1659     Undo();
1660 }
1661
1662 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1663 {
1664     Redo();
1665 }
1666
1667 void wxTextCtrl::OnDelete(wxCommandEvent& event)
1668 {
1669     long from, to;
1670     GetSelection(& from, & to);
1671     if (from != -1 && to != -1)
1672         Remove(from, to);
1673 }
1674
1675 void wxTextCtrl::OnSelectAll(wxCommandEvent& event)
1676 {
1677     SetSelection(-1, -1);
1678 }
1679
1680 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1681 {
1682     event.Enable( CanCut() );
1683 }
1684
1685 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1686 {
1687     event.Enable( CanCopy() );
1688 }
1689
1690 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1691 {
1692     event.Enable( CanPaste() );
1693 }
1694
1695 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1696 {
1697     event.Enable( CanUndo() );
1698 }
1699
1700 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1701 {
1702     event.Enable( CanRedo() );
1703 }
1704
1705 void wxTextCtrl::OnUpdateDelete(wxUpdateUIEvent& event)
1706 {
1707     long from, to;
1708     GetSelection(& from, & to);
1709     event.Enable(from != -1 && to != -1 && from != to && IsEditable()) ;
1710 }
1711
1712 void wxTextCtrl::OnUpdateSelectAll(wxUpdateUIEvent& event)
1713 {
1714     event.Enable(GetLastPosition() > 0);
1715 }
1716
1717 void wxTextCtrl::OnRightClick(wxMouseEvent& event)
1718 {
1719 #if wxUSE_RICHEDIT
1720     if (IsRich())
1721     {
1722         if (!m_privateContextMenu)
1723         {
1724             m_privateContextMenu = new wxMenu;
1725             m_privateContextMenu->Append(wxID_UNDO, _("&Undo"));
1726             m_privateContextMenu->Append(wxID_REDO, _("&Redo"));
1727             m_privateContextMenu->AppendSeparator();
1728             m_privateContextMenu->Append(wxID_CUT, _("Cu&t"));
1729             m_privateContextMenu->Append(wxID_COPY, _("&Copy"));
1730             m_privateContextMenu->Append(wxID_PASTE, _("&Paste"));
1731             m_privateContextMenu->Append(wxID_CLEAR, _("&Delete"));
1732             m_privateContextMenu->AppendSeparator();
1733             m_privateContextMenu->Append(wxID_SELECTALL, _("Select &All"));
1734         }
1735         PopupMenu(m_privateContextMenu, event.GetPosition());
1736         return;
1737     }
1738     else
1739 #endif
1740     event.Skip();
1741 }
1742
1743 void wxTextCtrl::OnSetFocus(wxFocusEvent& event)
1744 {
1745     // be sure the caret remains invisible if the user had hidden it
1746     if ( !m_isNativeCaretShown )
1747     {
1748         ::HideCaret(GetHwnd());
1749     }
1750 }
1751
1752 // the rest of the file only deals with the rich edit controls
1753 #if wxUSE_RICHEDIT
1754
1755 // ----------------------------------------------------------------------------
1756 // EN_LINK processing
1757 // ----------------------------------------------------------------------------
1758
1759 bool wxTextCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
1760 {
1761     NMHDR *hdr = (NMHDR* )lParam;
1762     switch ( hdr->code )
1763     {
1764        case EN_MSGFILTER:
1765             {
1766                 const MSGFILTER *msgf = (MSGFILTER *)lParam;
1767                 UINT msg = msgf->msg;
1768
1769                 // this is a bit crazy but richedit 1.0 sends us all mouse
1770                 // events _except_ WM_LBUTTONUP (don't ask me why) so we have
1771                 // generate the wxWin events for this message manually
1772                 //
1773                 // NB: in fact, this is still not totally correct as it does
1774                 //     send us WM_LBUTTONUP if the selection was cleared by the
1775                 //     last click -- so currently we get 2 events in this case,
1776                 //     but as I don't see any obvious way to check for this I
1777                 //     leave this code in place because it's still better than
1778                 //     not getting left up events at all
1779                 if ( msg == WM_LBUTTONUP )
1780                 {
1781                     WXUINT flags = msgf->wParam;
1782                     int x = GET_X_LPARAM(msgf->lParam),
1783                         y = GET_Y_LPARAM(msgf->lParam);
1784
1785                     HandleMouseEvent(msg, x, y, flags);
1786                 }
1787             }
1788
1789             // return TRUE to process the event (and FALSE to ignore it)
1790             return TRUE;
1791
1792         case EN_LINK:
1793             {
1794                 const ENLINK *enlink = (ENLINK *)hdr;
1795
1796                 switch ( enlink->msg )
1797                 {
1798                     case WM_SETCURSOR:
1799                         // ok, so it is hardcoded - do we really nee to
1800                         // customize it?
1801                         ::SetCursor(GetHcursorOf(wxCursor(wxCURSOR_HAND)));
1802                         *result = TRUE;
1803                         break;
1804
1805                     case WM_MOUSEMOVE:
1806                     case WM_LBUTTONDOWN:
1807                     case WM_LBUTTONUP:
1808                     case WM_LBUTTONDBLCLK:
1809                     case WM_RBUTTONDOWN:
1810                     case WM_RBUTTONUP:
1811                     case WM_RBUTTONDBLCLK:
1812                         // send a mouse event
1813                         {
1814                             static const wxEventType eventsMouse[] =
1815                             {
1816                                 wxEVT_MOTION,
1817                                 wxEVT_LEFT_DOWN,
1818                                 wxEVT_LEFT_UP,
1819                                 wxEVT_LEFT_DCLICK,
1820                                 wxEVT_RIGHT_DOWN,
1821                                 wxEVT_RIGHT_UP,
1822                                 wxEVT_RIGHT_DCLICK,
1823                             };
1824
1825                             // the event ids are consecutive
1826                             wxMouseEvent
1827                                 evtMouse(eventsMouse[enlink->msg - WM_MOUSEMOVE]);
1828
1829                             InitMouseEvent(evtMouse,
1830                                            GET_X_LPARAM(enlink->lParam),
1831                                            GET_Y_LPARAM(enlink->lParam),
1832                                            enlink->wParam);
1833
1834                             wxTextUrlEvent event(m_windowId, evtMouse,
1835                                                  enlink->chrg.cpMin,
1836                                                  enlink->chrg.cpMax);
1837
1838                             InitCommandEvent(event);
1839
1840                             *result = ProcessCommand(event);
1841                         }
1842                         break;
1843                 }
1844             }
1845             return TRUE;
1846     }
1847
1848     // not processed, leave it to the base class
1849     return wxTextCtrlBase::MSWOnNotify(idCtrl, lParam, result);
1850 }
1851
1852 // ----------------------------------------------------------------------------
1853 // colour setting for the rich edit controls
1854 // ----------------------------------------------------------------------------
1855
1856 bool wxTextCtrl::SetBackgroundColour(const wxColour& colour)
1857 {
1858     if ( !wxTextCtrlBase::SetBackgroundColour(colour) )
1859     {
1860         // colour didn't really change
1861         return FALSE;
1862     }
1863
1864     if ( IsRich() )
1865     {
1866         // rich edit doesn't use WM_CTLCOLOR, hence we need to send
1867         // EM_SETBKGNDCOLOR additionally
1868         ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour));
1869     }
1870
1871     return TRUE;
1872 }
1873
1874 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1875 {
1876     if ( !wxTextCtrlBase::SetForegroundColour(colour) )
1877     {
1878         // colour didn't really change
1879         return FALSE;
1880     }
1881
1882     if ( IsRich() )
1883     {
1884         // change the colour of everything
1885         CHARFORMAT cf;
1886         wxZeroMemory(cf);
1887         cf.cbSize = sizeof(cf);
1888         cf.dwMask = CFM_COLOR;
1889         cf.crTextColor = wxColourToRGB(colour);
1890         ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf);
1891     }
1892
1893     return TRUE;
1894 }
1895
1896 // ----------------------------------------------------------------------------
1897 // styling support for rich edit controls
1898 // ----------------------------------------------------------------------------
1899
1900 #if wxUSE_RICHEDIT
1901
1902 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
1903 {
1904     if ( !IsRich() )
1905     {
1906         // can't do it with normal text control
1907         return FALSE;
1908     }
1909
1910     // the richedit 1.0 doesn't handle setting background colour, so don't
1911     // even try to do anything if it's the only thing we want to change
1912     if ( m_verRichEdit == 1 && !style.HasFont() && !style.HasTextColour() &&
1913         !style.HasLeftIndent() && !style.HasRightIndent() && !style.HasAlignment() &&
1914         !style.HasTabs() )
1915     {
1916         // nothing to do: return TRUE if there was really nothing to do and
1917         // FALSE if we failed to set bg colour
1918         return !style.HasBackgroundColour();
1919     }
1920
1921     // order the range if needed
1922     if ( start > end )
1923     {
1924         long tmp = start;
1925         start = end;
1926         end = tmp;
1927     }
1928
1929     // we can only change the format of the selection, so select the range we
1930     // want and restore the old selection later
1931     long startOld, endOld;
1932     GetSelection(&startOld, &endOld);
1933
1934     // but do we really have to change the selection?
1935     bool changeSel = start != startOld || end != endOld;
1936
1937     if ( changeSel )
1938     {
1939         DoSetSelection(start, end, FALSE /* don't scroll caret into view */);
1940     }
1941
1942     // initialize CHARFORMAT struct
1943 #if wxUSE_RICHEDIT2
1944     CHARFORMAT2 cf;
1945 #else
1946     CHARFORMAT cf;
1947 #endif
1948
1949     wxZeroMemory(cf);
1950
1951     // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
1952     // CHARFORMAT in that case
1953 #if wxUSE_RICHEDIT2
1954     if ( m_verRichEdit == 1 )
1955     {
1956         // this is the only thing the control is going to grok
1957         cf.cbSize = sizeof(CHARFORMAT);
1958     }
1959     else
1960 #endif
1961     {
1962         // CHARFORMAT or CHARFORMAT2
1963         cf.cbSize = sizeof(cf);
1964     }
1965
1966     if ( style.HasFont() )
1967     {
1968         // VZ: CFM_CHARSET doesn't seem to do anything at all in RichEdit 2.0
1969         //     but using it doesn't seem to hurt neither so leaving it for now
1970
1971         cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET |
1972                      CFM_ITALIC | CFM_BOLD | CFM_UNDERLINE;
1973
1974         // fill in data from LOGFONT but recalculate lfHeight because we need
1975         // the real height in twips and not the negative number which
1976         // wxFillLogFont() returns (this is correct in general and works with
1977         // the Windows font mapper, but not here)
1978         LOGFONT lf;
1979         wxFillLogFont(&lf, &style.GetFont());
1980         cf.yHeight = 20*style.GetFont().GetPointSize(); // 1 pt = 20 twips
1981         cf.bCharSet = lf.lfCharSet;
1982         cf.bPitchAndFamily = lf.lfPitchAndFamily;
1983         wxStrncpy( cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName) );
1984
1985         // also deal with underline/italic/bold attributes: note that we must
1986         // always set CFM_ITALIC &c bits in dwMask, even if we don't set the
1987         // style to allow clearing it
1988         if ( lf.lfItalic )
1989         {
1990             cf.dwEffects |= CFE_ITALIC;
1991         }
1992
1993         if ( lf.lfWeight == FW_BOLD )
1994         {
1995             cf.dwEffects |= CFE_BOLD;
1996         }
1997
1998         if ( lf.lfUnderline )
1999         {
2000             cf.dwEffects |= CFE_UNDERLINE;
2001         }
2002
2003         // strikeout fonts are not supported by wxWindows
2004     }
2005
2006     if ( style.HasTextColour() )
2007     {
2008         cf.dwMask |= CFM_COLOR;
2009         cf.crTextColor = wxColourToRGB(style.GetTextColour());
2010     }
2011
2012 #if wxUSE_RICHEDIT2
2013     if ( m_verRichEdit != 1 && style.HasBackgroundColour() )
2014     {
2015         cf.dwMask |= CFM_BACKCOLOR;
2016         cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
2017     }
2018 #endif // wxUSE_RICHEDIT2
2019
2020     // do format the selection
2021     bool ok = ::SendMessage(GetHwnd(), EM_SETCHARFORMAT,
2022                             SCF_SELECTION, (LPARAM)&cf) != 0;
2023     if ( !ok )
2024     {
2025         wxLogDebug(_T("SendMessage(EM_SETCHARFORMAT, SCF_SELECTION) failed"));
2026     }
2027
2028     // now do the paragraph formatting
2029     PARAFORMAT2 pf;
2030     wxZeroMemory(pf);
2031     // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2032     // PARAFORMAT in that case
2033 #if wxUSE_RICHEDIT2
2034     if ( m_verRichEdit == 1 )
2035     {
2036         // this is the only thing the control is going to grok
2037         pf.cbSize = sizeof(PARAFORMAT);
2038     }
2039     else
2040 #endif
2041     {
2042         // PARAFORMAT or PARAFORMAT2
2043         pf.cbSize = sizeof(pf);
2044     }
2045
2046     if (style.HasAlignment())
2047     {
2048         pf.dwMask |= PFM_ALIGNMENT;
2049         if (style.GetAlignment() == wxTEXT_ALIGNMENT_RIGHT)
2050             pf.wAlignment = PFA_RIGHT;
2051         else if (style.GetAlignment() == wxTEXT_ALIGNMENT_CENTRE)
2052             pf.wAlignment = PFA_CENTER;
2053         else if (style.GetAlignment() == wxTEXT_ALIGNMENT_JUSTIFIED)
2054             pf.wAlignment = PFA_JUSTIFY;
2055         else
2056             pf.wAlignment = PFA_LEFT;
2057     }
2058
2059     if (style.HasLeftIndent())
2060     {
2061         pf.dwMask |= PFM_STARTINDENT;
2062
2063         // Convert from 1/10 mm to TWIPS
2064         pf.dxStartIndent = (int) (((double) style.GetLeftIndent()) * mm2twips / 10.0) ;
2065
2066         // TODO: do we need to specify dxOffset?
2067     }
2068
2069     if (style.HasRightIndent())
2070     {
2071         pf.dwMask |= PFM_RIGHTINDENT;
2072
2073         // Convert from 1/10 mm to TWIPS
2074         pf.dxRightIndent = (int) (((double) style.GetRightIndent()) * mm2twips / 10.0) ;
2075     }
2076
2077     if (style.HasTabs())
2078     {
2079         pf.dwMask |= PFM_TABSTOPS;
2080
2081         const wxArrayInt& tabs = style.GetTabs();
2082
2083         pf.cTabCount = wxMin(tabs.GetCount(), MAX_TAB_STOPS);
2084         size_t i;
2085         for (i = 0; i < (size_t) pf.cTabCount; i++)
2086         {
2087             // Convert from 1/10 mm to TWIPS
2088             pf.rgxTabs[i] = (int) (((double) tabs[i]) * mm2twips / 10.0) ;
2089         }
2090     }
2091
2092     if (pf.dwMask != 0)
2093     {
2094         // do format the selection
2095         bool ok = ::SendMessage(GetHwnd(), EM_SETPARAFORMAT,
2096             0, (LPARAM) &pf) != 0;
2097         if ( !ok )
2098         {
2099             wxLogDebug(_T("SendMessage(EM_SETPARAFORMAT, 0) failed"));
2100         }
2101     }
2102
2103     if ( changeSel )
2104     {
2105         // restore the original selection
2106         DoSetSelection(startOld, endOld, FALSE);
2107     }
2108
2109     return ok;
2110 }
2111
2112 bool wxTextCtrl::SetDefaultStyle(const wxTextAttr& style)
2113 {
2114     if ( !wxTextCtrlBase::SetDefaultStyle(style) )
2115         return FALSE;
2116
2117     // we have to do this or the style wouldn't apply for the text typed by the
2118     // user
2119     long posLast = GetLastPosition();
2120     SetStyle(posLast, posLast, m_defaultStyle);
2121
2122     return TRUE;
2123 }
2124
2125 bool wxTextCtrl::GetStyle(long position, wxTextAttr& style)
2126 {
2127     if ( !IsRich() )
2128     {
2129         // can't do it with normal text control
2130         return FALSE;
2131     }
2132
2133     // initialize CHARFORMAT struct
2134 #if wxUSE_RICHEDIT2
2135     CHARFORMAT2 cf;
2136 #else
2137     CHARFORMAT cf;
2138 #endif
2139
2140     wxZeroMemory(cf);
2141
2142     // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2143     // CHARFORMAT in that case
2144 #if wxUSE_RICHEDIT2
2145     if ( m_verRichEdit == 1 )
2146     {
2147         // this is the only thing the control is going to grok
2148         cf.cbSize = sizeof(CHARFORMAT);
2149     }
2150     else
2151 #endif
2152     {
2153         // CHARFORMAT or CHARFORMAT2
2154         cf.cbSize = sizeof(cf);
2155     }
2156     // we can only change the format of the selection, so select the range we
2157     // want and restore the old selection later
2158     long startOld, endOld;
2159     GetSelection(&startOld, &endOld);
2160
2161     // but do we really have to change the selection?
2162     bool changeSel = position != startOld || position != endOld;
2163
2164     if ( changeSel )
2165     {
2166         DoSetSelection(position, position, FALSE /* don't scroll caret into view */);
2167     }
2168
2169     // get the selection formatting
2170     (void) ::SendMessage(GetHwnd(), EM_GETCHARFORMAT,
2171                             SCF_SELECTION, (LPARAM)&cf) ;
2172
2173     LOGFONT lf;
2174     lf.lfHeight = cf.yHeight;
2175     lf.lfWidth = 0;
2176     lf.lfCharSet = ANSI_CHARSET; // FIXME: how to get correct charset?
2177     lf.lfClipPrecision = 0;
2178     lf.lfEscapement = 0;
2179     wxStrcpy(lf.lfFaceName, cf.szFaceName);
2180     if (cf.dwEffects & CFE_ITALIC)
2181         lf.lfItalic = TRUE;
2182     lf.lfOrientation = 0;
2183     lf.lfPitchAndFamily = cf.bPitchAndFamily;
2184     lf.lfQuality = 0;
2185     if (cf.dwEffects & CFE_STRIKEOUT)
2186         lf.lfStrikeOut = TRUE;
2187     if (cf.dwEffects & CFE_UNDERLINE)
2188         lf.lfUnderline = TRUE;
2189     if (cf.dwEffects & CFE_BOLD)
2190         lf.lfWeight = FW_BOLD;
2191
2192     wxFont font = wxCreateFontFromLogFont(& lf);
2193     if (font.Ok())
2194     {
2195         style.SetFont(font);
2196     }
2197     style.SetTextColour(wxColour(cf.crTextColor));
2198
2199 #if wxUSE_RICHEDIT2
2200     if ( m_verRichEdit != 1 )
2201     {
2202         // cf.dwMask |= CFM_BACKCOLOR;
2203         style.SetBackgroundColour(wxColour(cf.crBackColor));
2204     }
2205 #endif // wxUSE_RICHEDIT2
2206
2207     // now get the paragraph formatting
2208     PARAFORMAT2 pf;
2209     wxZeroMemory(pf);
2210     // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2211     // PARAFORMAT in that case
2212 #if wxUSE_RICHEDIT2
2213     if ( m_verRichEdit == 1 )
2214     {
2215         // this is the only thing the control is going to grok
2216         pf.cbSize = sizeof(PARAFORMAT);
2217     }
2218     else
2219 #endif
2220     {
2221         // PARAFORMAT or PARAFORMAT2
2222         pf.cbSize = sizeof(pf);
2223     }
2224
2225     // do format the selection
2226     (void) ::SendMessage(GetHwnd(), EM_GETPARAFORMAT, 0, (LPARAM) &pf) ;
2227
2228     style.SetLeftIndent( (int) ((double) pf.dxStartIndent * twips2mm * 10.0) );
2229     style.SetRightIndent( (int) ((double) pf.dxRightIndent * twips2mm * 10.0) );
2230
2231     if (pf.wAlignment == PFA_CENTER)
2232         style.SetAlignment(wxTEXT_ALIGNMENT_CENTRE);
2233     else if (pf.wAlignment == PFA_RIGHT)
2234         style.SetAlignment(wxTEXT_ALIGNMENT_RIGHT);
2235     else if (pf.wAlignment == PFA_JUSTIFY)
2236         style.SetAlignment(wxTEXT_ALIGNMENT_JUSTIFIED);
2237     else
2238         style.SetAlignment(wxTEXT_ALIGNMENT_LEFT);
2239
2240     wxArrayInt tabStops;
2241     size_t i;
2242     for (i = 0; i < (size_t) pf.cTabCount; i++)
2243     {
2244         tabStops[i] = (int) ((double) (pf.rgxTabs[i] & 0xFFFF) * twips2mm * 10.0) ;
2245     }
2246
2247     if ( changeSel )
2248     {
2249         // restore the original selection
2250         DoSetSelection(startOld, endOld, FALSE);
2251     }
2252
2253     return TRUE;
2254 }
2255
2256 #endif
2257
2258 // ----------------------------------------------------------------------------
2259 // wxRichEditModule
2260 // ----------------------------------------------------------------------------
2261
2262 bool wxRichEditModule::OnInit()
2263 {
2264     // don't do anything - we will load it when needed
2265     return TRUE;
2266 }
2267
2268 void wxRichEditModule::OnExit()
2269 {
2270     for ( size_t i = 0; i < WXSIZEOF(ms_hRichEdit); i++ )
2271     {
2272         if ( ms_hRichEdit[i] )
2273         {
2274             ::FreeLibrary(ms_hRichEdit[i]);
2275             ms_hRichEdit[i] = NULL;
2276         }
2277     }
2278 }
2279
2280 /* static */
2281 bool wxRichEditModule::Load(int version)
2282 {
2283     // we don't support loading richedit 3.0 as I don't know how to distinguish
2284     // it from 2.0 anyhow
2285     wxCHECK_MSG( version == 1 || version == 2, FALSE,
2286                  _T("incorrect richedit control version requested") );
2287
2288     // make it the index in the array
2289     version--;
2290
2291     if ( ms_hRichEdit[version] == (HINSTANCE)-1 )
2292     {
2293         // we had already tried to load it and failed
2294         return FALSE;
2295     }
2296
2297     if ( ms_hRichEdit[version] )
2298     {
2299         // we've already got this one
2300         return TRUE;
2301     }
2302
2303     wxString dllname = version ? _T("riched20") : _T("riched32");
2304     dllname += _T(".dll");
2305
2306     ms_hRichEdit[version] = ::LoadLibrary(dllname);
2307
2308     if ( !ms_hRichEdit[version] )
2309     {
2310         wxLogSysError(_("Could not load Rich Edit DLL '%s'"), dllname.c_str());
2311
2312         ms_hRichEdit[version] = (HINSTANCE)-1;
2313
2314         return FALSE;
2315     }
2316
2317     return TRUE;
2318 }
2319
2320 #endif // wxUSE_RICHEDIT
2321
2322 #endif // wxUSE_TEXTCTRL