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 and Markus Holzem
   9 // Licence:     wxWindows license
  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 #endif
  42
  43 #include "wx/module.h"
  44
  45 #if wxUSE_CLIPBOARD
  46     #include "wx/clipbrd.h"
  47 #endif
  48
  49 #include "wx/textfile.h"
  50
  51 #include <windowsx.h>
  52
  53 #include "wx/msw/private.h"
  54
  55 #include <string.h>
  56 #include <stdlib.h>
  57 #include <sys/types.h>
  58
  59 #if wxUSE_RICHEDIT && (!defined(__GNUWIN32_OLD__) || defined(__CYGWIN10__))
  60     #include <richedit.h>
  61 #endif
  62
  63 // old mingw32 doesn't define this
  64 #ifndef CFM_CHARSET
  65     #define CFM_CHARSET 0x08000000
  66 #endif // CFM_CHARSET
  67
  68 #ifndef CFM_BACKCOLOR
  69     #define CFM_BACKCOLOR 0x04000000
  70 #endif
  71
  72 // cygwin does not have these defined for richedit
  73 #ifndef ENM_LINK
  74     #define ENM_LINK 0x04000000
  75 #endif
  76
  77 #ifndef EM_AUTOURLDETECT
  78     #define EM_AUTOURLDETECT (WM_USER + 91)
  79 #endif
  80
  81 #ifndef EN_LINK
  82     #define EN_LINK 0x070b
  83
  84     typedef struct _enlink
  85     {
  86         NMHDR nmhdr;
  87         UINT msg;
  88         WPARAM wParam;
  89         LPARAM lParam;
  90         CHARRANGE chrg;
  91     } ENLINK;
  92 #endif // ENLINK
  93
  94 #ifndef SF_UNICODE
  95     #define SF_UNICODE 0x0010
  96 #endif
  97
  98 // Watcom C++ doesn't define this
  99 #ifndef SCF_ALL
 100 #define SCF_ALL 0x0004
 101 #endif
 102
 103 // ----------------------------------------------------------------------------
 104 // private functions
 105 // ----------------------------------------------------------------------------
 106
 107 #if wxUSE_RICHEDIT
 108
 109 DWORD CALLBACK wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb);
 110
 111 #endif // wxUSE_RICHEDIT
 112
 113 // ----------------------------------------------------------------------------
 114 // private classes
 115 // ----------------------------------------------------------------------------
 116
 117 #if wxUSE_RICHEDIT
 118
 119 // this module initializes RichEdit DLL(s) if needed
 120 class wxRichEditModule : public wxModule
 121 {
 122 public:
 123     virtual bool OnInit();
 124     virtual void OnExit();
 125
 126     // load the richedit DLL of at least of required version
 127     static bool Load(int version = 1);
 128
 129 private:
 130     // the handles to richedit 1.0 and 2.0 (or 3.0) DLLs
 131     static HINSTANCE ms_hRichEdit[2];
 132
 133     DECLARE_DYNAMIC_CLASS(wxRichEditModule)
 134 };
 135
 136 HINSTANCE wxRichEditModule::ms_hRichEdit[2] = { NULL, NULL };
 137
 138 IMPLEMENT_DYNAMIC_CLASS(wxRichEditModule, wxModule)
 139
 140 #endif // wxUSE_RICHEDIT
 141
 142 // ----------------------------------------------------------------------------
 143 // event tables and other macros
 144 // ----------------------------------------------------------------------------
 145
 146 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxControl)
 147
 148 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
 149     EVT_CHAR(wxTextCtrl::OnChar)
 150     EVT_DROP_FILES(wxTextCtrl::OnDropFiles)
 151
 152     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 153     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 154     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 155     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 156     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 157
 158     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 159     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 160     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 161     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 162     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 163 #ifdef __WIN16__
 164     EVT_ERASE_BACKGROUND(wxTextCtrl::OnEraseBackground)
 165 #endif
 166 END_EVENT_TABLE()
 167
 168 // ============================================================================
 169 // implementation
 170 // ============================================================================
 171
 172 // ----------------------------------------------------------------------------
 173 // creation
 174 // ----------------------------------------------------------------------------
 175
 176 void wxTextCtrl::Init()
 177 {
 178 #if wxUSE_RICHEDIT
 179     m_verRichEdit = 0;
 180 #endif
 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             msStyle |= ES_AUTOVSCROLL;
 260
 261             m_verRichEdit = verRichEdit;
 262             if ( m_verRichEdit == 1 )
 263             {
 264                 windowClass = wxT("RICHEDIT");
 265             }
 266             else
 267             {
 268 #ifndef RICHEDIT_CLASS
 269                 wxString RICHEDIT_CLASS;
 270                 RICHEDIT_CLASS.Printf(_T("RichEdit%d0"), m_verRichEdit);
 271 #if wxUSE_UNICODE
 272                 RICHEDIT_CLASS += _T('W');
 273 #else // ANSI
 274                 RICHEDIT_CLASS += _T('A');
 275 #endif // Unicode/ANSI
 276 #endif // !RICHEDIT_CLASS
 277
 278                 windowClass = RICHEDIT_CLASS;
 279             }
 280         }
 281     }
 282 #endif // wxUSE_RICHEDIT
 283
 284     // we need to turn '\n's into "\r\n"s for the multiline controls
 285     wxString valueWin;
 286     if ( m_windowStyle & wxTE_MULTILINE )
 287     {
 288         valueWin = wxTextFile::Translate(value, wxTextFileType_Dos);
 289     }
 290     else // single line
 291     {
 292         valueWin = value;
 293     }
 294
 295     if ( !MSWCreateControl(windowClass, msStyle, pos, size, valueWin) )
 296         return FALSE;
 297
 298     SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
 299
 300 #if wxUSE_RICHEDIT
 301     if ( IsRich() )
 302     {
 303         // have to enable events manually
 304         LPARAM mask = ENM_CHANGE | ENM_DROPFILES | ENM_SELCHANGE | ENM_UPDATE;
 305
 306         if ( m_windowStyle & wxTE_AUTO_URL )
 307         {
 308             mask |= ENM_LINK;
 309
 310             ::SendMessage(GetHwnd(), EM_AUTOURLDETECT, TRUE, 0);
 311         }
 312
 313         ::SendMessage(GetHwnd(), EM_SETEVENTMASK, 0, mask);
 314     }
 315 #endif // wxUSE_RICHEDIT
 316
 317     return TRUE;
 318 }
 319
 320 // Make sure the window style (etc.) reflects the HWND style (roughly)
 321 void wxTextCtrl::AdoptAttributesFromHWND()
 322 {
 323     wxWindow::AdoptAttributesFromHWND();
 324
 325     HWND hWnd = GetHwnd();
 326     long style = ::GetWindowLong(hWnd, GWL_STYLE);
 327
 328     // retrieve the style to see whether this is an edit or richedit ctrl
 329 #if wxUSE_RICHEDIT
 330     wxString classname = wxGetWindowClass(GetHWND());
 331
 332     if ( classname.IsSameAs(_T("EDIT"), FALSE /* no case */) )
 333     {
 334         m_verRichEdit = 0;
 335     }
 336     else // rich edit?
 337     {
 338         wxChar c;
 339         if ( wxSscanf(classname, _T("RichEdit%d0%c"), &m_verRichEdit, &c) != 2 )
 340         {
 341             wxLogDebug(_T("Unknown edit control '%s'."), classname.c_str());
 342
 343             m_verRichEdit = 0;
 344         }
 345     }
 346 #endif // wxUSE_RICHEDIT
 347
 348     if (style & ES_MULTILINE)
 349         m_windowStyle |= wxTE_MULTILINE;
 350     if (style & ES_PASSWORD)
 351         m_windowStyle |= wxTE_PASSWORD;
 352     if (style & ES_READONLY)
 353         m_windowStyle |= wxTE_READONLY;
 354     if (style & ES_WANTRETURN)
 355         m_windowStyle |= wxTE_PROCESS_ENTER;
 356 }
 357
 358 WXDWORD wxTextCtrl::MSWGetStyle(long style, WXDWORD *exstyle) const
 359 {
 360     // default border for the text controls is the sunken one
 361     if ( (style & wxBORDER_MASK) == wxBORDER_DEFAULT )
 362     {
 363         style |= wxBORDER_SUNKEN;
 364     }
 365
 366     long msStyle = wxControl::MSWGetStyle(style, exstyle);
 367
 368     // default styles
 369     msStyle |= ES_LEFT;
 370
 371     if ( style & wxTE_MULTILINE )
 372     {
 373         wxASSERT_MSG( !(style & wxTE_PROCESS_ENTER),
 374                       wxT("wxTE_PROCESS_ENTER style is ignored for multiline text controls (they always process it)") );
 375
 376         msStyle |= ES_MULTILINE | ES_WANTRETURN;
 377         if ( !(style & wxTE_NO_VSCROLL) )
 378             msStyle |= WS_VSCROLL;
 379
 380         style |= wxTE_PROCESS_ENTER;
 381     }
 382     else // !multiline
 383     {
 384         // there is really no reason to not have this style for single line
 385         // text controls
 386         msStyle |= ES_AUTOHSCROLL;
 387     }
 388
 389     if ( style & wxHSCROLL )
 390         msStyle |= WS_HSCROLL | ES_AUTOHSCROLL;
 391
 392     if ( style & wxTE_READONLY )
 393         msStyle |= ES_READONLY;
 394
 395     if ( style & wxTE_PASSWORD )
 396         msStyle |= ES_PASSWORD;
 397
 398     if ( style & wxTE_AUTO_SCROLL )
 399         msStyle |= ES_AUTOHSCROLL;
 400
 401     if ( style & wxTE_NOHIDESEL )
 402         msStyle |= ES_NOHIDESEL;
 403
 404     return msStyle;
 405 }
 406
 407 void wxTextCtrl::SetWindowStyleFlag(long style)
 408 {
 409 #if wxUSE_RICHEDIT
 410     // we have to deal with some styles separately because they can't be
 411     // changed by simply calling SetWindowLong(GWL_STYLE) but can be changed
 412     // using richedit-specific EM_SETOPTIONS
 413     if ( IsRich() &&
 414             ((style & wxTE_NOHIDESEL) != (GetWindowStyle() & wxTE_NOHIDESEL)) )
 415     {
 416         bool set = (style & wxTE_NOHIDESEL) != 0;
 417
 418         ::SendMessage(GetHwnd(), EM_SETOPTIONS, set ? ECOOP_OR : ECOOP_AND,
 419                       set ? ECO_NOHIDESEL : ~ECO_NOHIDESEL);
 420     }
 421 #endif // wxUSE_RICHEDIT
 422
 423     wxControl::SetWindowStyleFlag(style);
 424 }
 425
 426 // ----------------------------------------------------------------------------
 427 // set/get the controls text
 428 // ----------------------------------------------------------------------------
 429
 430 wxString wxTextCtrl::GetValue() const
 431 {
 432     // range 0..-1 is special for GetRange() and means to retrieve all text
 433     return GetRange(0, -1);
 434 }
 435
 436 wxString wxTextCtrl::GetRange(long from, long to) const
 437 {
 438     wxString str;
 439
 440     if ( from >= to && to != -1 )
 441     {
 442         // nothing to retrieve
 443         return str;
 444     }
 445
 446 #if wxUSE_RICHEDIT
 447     if ( IsRich() )
 448     {
 449         int len = GetWindowTextLength(GetHwnd());
 450         if ( len > from )
 451         {
 452             // alloc one extra WORD as needed by the control
 453             wxChar *p = str.GetWriteBuf(++len);
 454
 455             TEXTRANGE textRange;
 456             textRange.chrg.cpMin = from;
 457             textRange.chrg.cpMax = to == -1 ? len : to;
 458             textRange.lpstrText = p;
 459
 460             (void)SendMessage(GetHwnd(), EM_GETTEXTRANGE, 0, (LPARAM)&textRange);
 461
 462             if ( m_verRichEdit > 1 )
 463             {
 464                 // RichEdit 2.0 uses just CR ('\r') for the newlines which is
 465                 // neither Unix nor Windows style - convert it to something
 466                 // reasonable
 467                 for ( ; *p; p++ )
 468                 {
 469                     if ( *p == _T('\r') )
 470                         *p = _T('\n');
 471                 }
 472             }
 473
 474             str.UngetWriteBuf();
 475
 476             if ( m_verRichEdit == 1 )
 477             {
 478                 // convert to the canonical form - see comment below
 479                 str = wxTextFile::Translate(str, wxTextFileType_Unix);
 480             }
 481         }
 482         //else: no text at all, leave the string empty
 483     }
 484     else
 485 #endif // wxUSE_RICHEDIT
 486     {
 487         // retrieve all text
 488         str = wxGetWindowText(GetHWND());
 489
 490         // need only a range?
 491         if ( from < to )
 492         {
 493             str = str.Mid(from, to - from);
 494         }
 495
 496         // WM_GETTEXT uses standard DOS CR+LF (\r\n) convention - convert to the
 497         // canonical one (same one as above) for consistency with the other kinds
 498         // of controls and, more importantly, with the other ports
 499         str = wxTextFile::Translate(str, wxTextFileType_Unix);
 500     }
 501
 502     return str;
 503 }
 504
 505 void wxTextCtrl::SetValue(const wxString& value)
 506 {
 507     // if the text is long enough, it's faster to just set it instead of first
 508     // comparing it with the old one (chances are that it will be different
 509     // anyhow, this comparison is there to avoid flicker for small single-line
 510     // edit controls mostly)
 511     if ( (value.length() > 0x400) || (value != GetValue()) )
 512     {
 513         DoWriteText(value, FALSE /* not selection only */);
 514
 515         // mark the control as being not dirty - we changed its text, not the
 516         // user
 517         DiscardEdits();
 518
 519         // for compatibility, don't move the cursor when doing SetValue()
 520         SetInsertionPoint(0);
 521     }
 522 }
 523
 524 #if wxUSE_RICHEDIT && (!wxUSE_UNICODE || wxUSE_UNICODE_MSLU)
 525
 526 DWORD CALLBACK wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb)
 527 {
 528     *pcb = 0;
 529
 530     wchar_t *wbuf = (wchar_t *)buf;
 531     const wchar_t *wpc = *(const wchar_t **)dwCookie;
 532     while ( cb && *wpc )
 533     {
 534         *wbuf++ = *wpc++;
 535
 536         cb -= sizeof(wchar_t);
 537         (*pcb) += sizeof(wchar_t);
 538     }
 539
 540     *(const wchar_t **)dwCookie = wpc;
 541
 542     return 0;
 543 }
 544
 545 extern long wxEncodingToCodepage(wxFontEncoding encoding); // from utils.cpp
 546
 547 #if wxUSE_UNICODE_MSLU
 548 bool wxTextCtrl::StreamIn(const wxString& value,
 549                           wxFontEncoding WXUNUSED(encoding),
 550                           bool selectionOnly)
 551 {
 552     const wchar_t *wpc = value.c_str();
 553 #else // !wxUSE_UNICODE_MSLU
 554 bool wxTextCtrl::StreamIn(const wxString& value,
 555                           wxFontEncoding encoding,
 556                           bool selectionOnly)
 557 {
 558     // we have to use EM_STREAMIN to force richedit control 2.0+ to show any
 559     // text in the non default charset - otherwise it thinks it knows better
 560     // than we do and always shows it in the default one
 561
 562     // first get the Windows code page for this encoding
 563     long codepage = wxEncodingToCodepage(encoding);
 564     if ( codepage == -1 )
 565     {
 566         // unknown encoding
 567         return FALSE;
 568     }
 569
 570     // next translate to Unicode using this code page
 571     int len = ::MultiByteToWideChar(codepage, 0, value, -1, NULL, 0);
 572
 573 #if wxUSE_WCHAR_T
 574     wxWCharBuffer wchBuf(len);
 575 #else
 576     wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
 577 #endif
 578
 579     if ( !::MultiByteToWideChar(codepage, 0, value, -1,
 580                                 (wchar_t *)(const wchar_t *)wchBuf, len) )
 581     {
 582         wxLogLastError(_T("MultiByteToWideChar"));
 583     }
 584
 585     // finally, stream it in the control
 586     const wchar_t *wpc = wchBuf;
 587 #endif // wxUSE_UNICODE_MSLU
 588
 589     EDITSTREAM eds;
 590     wxZeroMemory(eds);
 591     eds.dwCookie = (DWORD)&wpc;
 592     // the cast below is needed for broken (very) old mingw32 headers
 593     eds.pfnCallback = (EDITSTREAMCALLBACK)wxRichEditStreamIn;
 594
 595     if ( !::SendMessage(GetHwnd(), EM_STREAMIN,
 596                         SF_TEXT |
 597                         SF_UNICODE |
 598                         (selectionOnly ? SFF_SELECTION : 0),
 599                         (LPARAM)&eds) || eds.dwError )
 600     {
 601         wxLogLastError(_T("EM_STREAMIN"));
 602     }
 603
 604 #if !wxUSE_WCHAR_T
 605     free(wchBuf);
 606 #endif // !wxUSE_WCHAR_T
 607
 608     return TRUE;
 609 }
 610
 611 #endif // wxUSE_RICHEDIT
 612
 613 void wxTextCtrl::WriteText(const wxString& value)
 614 {
 615     DoWriteText(value);
 616 }
 617
 618 void wxTextCtrl::DoWriteText(const wxString& value, bool selectionOnly)
 619 {
 620     wxString valueDos;
 621     if ( m_windowStyle & wxTE_MULTILINE )
 622         valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
 623     else
 624         valueDos = value;
 625
 626 #if wxUSE_RICHEDIT
 627     // there are several complications with the rich edit controls here
 628     bool done = FALSE;
 629     if ( IsRich() )
 630     {
 631         // first, ensure that the new text will be in the default style
 632         if ( !m_defaultStyle.IsDefault() )
 633         {
 634             long start, end;
 635             GetSelection(&start, &end);
 636             SetStyle(start, end, m_defaultStyle);
 637         }
 638
 639 #if wxUSE_UNICODE_MSLU
 640         // RichEdit doesn't have Unicode version of EM_REPLACESEL on Win9x,
 641         // but EM_STREAMIN works
 642         if ( wxUsingUnicowsDll() && GetRichVersion() > 1 )
 643         {
 644            done = StreamIn(valueDos, wxFONTENCODING_SYSTEM, selectionOnly);
 645         }
 646 #endif // wxUSE_UNICODE_MSLU
 647
 648 #if !wxUSE_UNICODE
 649         // next check if the text we're inserting must be shown in a non
 650         // default charset -- this only works for RichEdit > 1.0
 651         if ( GetRichVersion() > 1 )
 652         {
 653             wxFont font = m_defaultStyle.GetFont();
 654             if ( !font.Ok() )
 655                 font = GetFont();
 656
 657             if ( font.Ok() )
 658             {
 659                wxFontEncoding encoding = font.GetEncoding();
 660                if ( encoding != wxFONTENCODING_SYSTEM )
 661                {
 662                    done = StreamIn(valueDos, encoding, selectionOnly);
 663                }
 664             }
 665         }
 666 #endif // !wxUSE_UNICODE
 667     }
 668
 669     if ( !done )
 670 #endif // wxUSE_RICHEDIT
 671     {
 672         if ( !selectionOnly )
 673         {
 674             SetSelection(-1, -1);
 675         }
 676
 677         ::SendMessage(GetHwnd(), EM_REPLACESEL, 0, (LPARAM)valueDos.c_str());
 678     }
 679
 680     AdjustSpaceLimit();
 681 }
 682
 683 void wxTextCtrl::AppendText(const wxString& text)
 684 {
 685     SetInsertionPointEnd();
 686
 687     WriteText(text);
 688 }
 689
 690 void wxTextCtrl::Clear()
 691 {
 692     ::SetWindowText(GetHwnd(), wxT(""));
 693 }
 694
 695 // ----------------------------------------------------------------------------
 696 // Clipboard operations
 697 // ----------------------------------------------------------------------------
 698
 699 void wxTextCtrl::Copy()
 700 {
 701     if (CanCopy())
 702     {
 703         ::SendMessage(GetHwnd(), WM_COPY, 0, 0L);
 704     }
 705 }
 706
 707 void wxTextCtrl::Cut()
 708 {
 709     if (CanCut())
 710     {
 711         ::SendMessage(GetHwnd(), WM_CUT, 0, 0L);
 712     }
 713 }
 714
 715 void wxTextCtrl::Paste()
 716 {
 717     if (CanPaste())
 718     {
 719         ::SendMessage(GetHwnd(), WM_PASTE, 0, 0L);
 720     }
 721 }
 722
 723 bool wxTextCtrl::CanCopy() const
 724 {
 725     // Can copy if there's a selection
 726     long from, to;
 727     GetSelection(&from, &to);
 728     return from != to;
 729 }
 730
 731 bool wxTextCtrl::CanCut() const
 732 {
 733     return CanCopy() && IsEditable();
 734 }
 735
 736 bool wxTextCtrl::CanPaste() const
 737 {
 738     if ( !IsEditable() )
 739         return FALSE;
 740
 741 #if wxUSE_RICHEDIT
 742     if ( IsRich() )
 743     {
 744         UINT cf = 0; // 0 == any format
 745
 746         return ::SendMessage(GetHwnd(), EM_CANPASTE, cf, 0) != 0;
 747     }
 748 #endif // wxUSE_RICHEDIT
 749
 750     // Standard edit control: check for straight text on clipboard
 751     if ( !::OpenClipboard(GetHwndOf(wxTheApp->GetTopWindow())) )
 752         return FALSE;
 753
 754     bool isTextAvailable = ::IsClipboardFormatAvailable(CF_TEXT) != 0;
 755     ::CloseClipboard();
 756
 757     return isTextAvailable;
 758 }
 759
 760 // ----------------------------------------------------------------------------
 761 // Accessors
 762 // ----------------------------------------------------------------------------
 763
 764 void wxTextCtrl::SetEditable(bool editable)
 765 {
 766     HWND hWnd = GetHwnd();
 767     SendMessage(hWnd, EM_SETREADONLY, (WPARAM)!editable, (LPARAM)0L);
 768 }
 769
 770 void wxTextCtrl::SetInsertionPoint(long pos)
 771 {
 772     DoSetSelection(pos, pos);
 773 }
 774
 775 void wxTextCtrl::SetInsertionPointEnd()
 776 {
 777     long pos;
 778
 779 #if wxUSE_RICHEDIT
 780     if ( m_verRichEdit == 1 )
 781     {
 782         // we don't have to waste time calling GetLastPosition() in this case
 783         pos = -1;
 784     }
 785     else // !RichEdit 1.0
 786 #endif // wxUSE_RICHEDIT
 787     {
 788         pos = GetLastPosition();
 789     }
 790
 791     SetInsertionPoint(pos);
 792 }
 793
 794 long wxTextCtrl::GetInsertionPoint() const
 795 {
 796 #if wxUSE_RICHEDIT
 797     if ( IsRich() )
 798     {
 799         CHARRANGE range;
 800         range.cpMin = 0;
 801         range.cpMax = 0;
 802         SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
 803         return range.cpMin;
 804     }
 805 #endif // wxUSE_RICHEDIT
 806
 807     DWORD Pos = (DWORD)SendMessage(GetHwnd(), EM_GETSEL, 0, 0L);
 808     return Pos & 0xFFFF;
 809 }
 810
 811 long wxTextCtrl::GetLastPosition() const
 812 {
 813     int numLines = GetNumberOfLines();
 814     long posStartLastLine = XYToPosition(0, numLines - 1);
 815
 816     long lenLastLine = GetLengthOfLineContainingPos(posStartLastLine);
 817
 818     return posStartLastLine + lenLastLine;
 819 }
 820
 821 // If the return values from and to are the same, there is no
 822 // selection.
 823 void wxTextCtrl::GetSelection(long* from, long* to) const
 824 {
 825 #if wxUSE_RICHEDIT
 826     if ( IsRich() )
 827     {
 828         CHARRANGE charRange;
 829         ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &charRange);
 830
 831         *from = charRange.cpMin;
 832         *to = charRange.cpMax;
 833     }
 834     else
 835 #endif // !wxUSE_RICHEDIT
 836     {
 837         DWORD dwStart, dwEnd;
 838         ::SendMessage(GetHwnd(), EM_GETSEL, (WPARAM)&dwStart, (LPARAM)&dwEnd);
 839
 840         *from = dwStart;
 841         *to = dwEnd;
 842     }
 843 }
 844
 845 bool wxTextCtrl::IsEditable() const
 846 {
 847     long style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
 848
 849     return (style & ES_READONLY) == 0;
 850 }
 851
 852 // ----------------------------------------------------------------------------
 853 // selection
 854 // ----------------------------------------------------------------------------
 855
 856 void wxTextCtrl::SetSelection(long from, long to)
 857 {
 858     // if from and to are both -1, it means (in wxWindows) that all text should
 859     // be selected - translate into Windows convention
 860     if ( (from == -1) && (to == -1) )
 861     {
 862         from = 0;
 863         to = -1;
 864     }
 865
 866     DoSetSelection(from, to);
 867 }
 868
 869 void wxTextCtrl::DoSetSelection(long from, long to, bool scrollCaret)
 870 {
 871     HWND hWnd = GetHwnd();
 872
 873 #ifdef __WIN32__
 874 #if wxUSE_RICHEDIT
 875     if ( IsRich() )
 876     {
 877         CHARRANGE range;
 878         range.cpMin = from;
 879         range.cpMax = to;
 880         SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM) &range);
 881     }
 882     else
 883 #endif // wxUSE_RICHEDIT
 884     {
 885         SendMessage(hWnd, EM_SETSEL, (WPARAM)from, (LPARAM)to);
 886     }
 887
 888     if ( scrollCaret )
 889     {
 890         SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
 891     }
 892 #else // Win16
 893     // WPARAM is 0: selection is scrolled into view
 894     SendMessage(hWnd, EM_SETSEL, (WPARAM)0, (LPARAM)MAKELONG(from, to));
 895 #endif // Win32/16
 896 }
 897
 898 // ----------------------------------------------------------------------------
 899 // Editing
 900 // ----------------------------------------------------------------------------
 901
 902 void wxTextCtrl::Replace(long from, long to, const wxString& value)
 903 {
 904     // Set selection and remove it
 905     DoSetSelection(from, to, FALSE /* don't scroll caret into view */);
 906
 907     SendMessage(GetHwnd(), EM_REPLACESEL,
 908 #ifdef __WIN32__
 909                 TRUE,
 910 #else
 911                 FALSE,
 912 #endif
 913                 (LPARAM)value.c_str());
 914 }
 915
 916 void wxTextCtrl::Remove(long from, long to)
 917 {
 918     Replace(from, to, _T(""));
 919 }
 920
 921 bool wxTextCtrl::LoadFile(const wxString& file)
 922 {
 923     if ( wxTextCtrlBase::LoadFile(file) )
 924     {
 925         // update the size limit if needed
 926         AdjustSpaceLimit();
 927
 928         return TRUE;
 929     }
 930
 931     return FALSE;
 932 }
 933
 934 bool wxTextCtrl::IsModified() const
 935 {
 936     return SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0;
 937 }
 938
 939 // Makes 'unmodified'
 940 void wxTextCtrl::DiscardEdits()
 941 {
 942     SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0L);
 943 }
 944
 945 int wxTextCtrl::GetNumberOfLines() const
 946 {
 947     return (int)SendMessage(GetHwnd(), EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0);
 948 }
 949
 950 long wxTextCtrl::XYToPosition(long x, long y) const
 951 {
 952     // This gets the char index for the _beginning_ of this line
 953     long charIndex = SendMessage(GetHwnd(), EM_LINEINDEX, (WPARAM)y, (LPARAM)0);
 954
 955     return charIndex + x;
 956 }
 957
 958 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
 959 {
 960     HWND hWnd = GetHwnd();
 961
 962     // This gets the line number containing the character
 963     long lineNo;
 964 #if wxUSE_RICHEDIT
 965     if ( IsRich() )
 966     {
 967         lineNo = SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, (LPARAM)pos);
 968     }
 969     else
 970 #endif // wxUSE_RICHEDIT
 971     {
 972         lineNo = SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, 0);
 973     }
 974
 975     if ( lineNo == -1 )
 976     {
 977         // no such line
 978         return FALSE;
 979     }
 980
 981     // This gets the char index for the _beginning_ of this line
 982     long charIndex = SendMessage(hWnd, EM_LINEINDEX, (WPARAM)lineNo, (LPARAM)0);
 983     if ( charIndex == -1 )
 984     {
 985         return FALSE;
 986     }
 987
 988     // The X position must therefore be the different between pos and charIndex
 989     if ( x )
 990         *x = pos - charIndex;
 991     if ( y )
 992         *y = lineNo;
 993
 994     return TRUE;
 995 }
 996
 997 void wxTextCtrl::ShowPosition(long pos)
 998 {
 999     HWND hWnd = GetHwnd();
1000
1001     // To scroll to a position, we pass the number of lines and characters
1002     // to scroll *by*. This means that we need to:
1003     // (1) Find the line position of the current line.
1004     // (2) Find the line position of pos.
1005     // (3) Scroll by (pos - current).
1006     // For now, ignore the horizontal scrolling.
1007
1008     // Is this where scrolling is relative to - the line containing the caret?
1009     // Or is the first visible line??? Try first visible line.
1010 //    int currentLineLineNo1 = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)-1, (LPARAM)0L);
1011
1012     int currentLineLineNo = (int)SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, (WPARAM)0, (LPARAM)0L);
1013
1014     int specifiedLineLineNo = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, (LPARAM)0L);
1015
1016     int linesToScroll = specifiedLineLineNo - currentLineLineNo;
1017
1018     if (linesToScroll != 0)
1019       (void)SendMessage(hWnd, EM_LINESCROLL, (WPARAM)0, (LPARAM)linesToScroll);
1020 }
1021
1022 long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const
1023 {
1024     return ::SendMessage(GetHwnd(), EM_LINELENGTH, (WPARAM)pos, 0);
1025 }
1026
1027 int wxTextCtrl::GetLineLength(long lineNo) const
1028 {
1029     long pos = XYToPosition(0, lineNo);
1030
1031     return GetLengthOfLineContainingPos(pos);
1032 }
1033
1034 wxString wxTextCtrl::GetLineText(long lineNo) const
1035 {
1036     size_t len = (size_t)GetLineLength(lineNo) + 1;
1037
1038     // there must be at least enough place for the length WORD in the
1039     // buffer
1040     len += sizeof(WORD);
1041
1042     wxString str;
1043     wxChar *buf = str.GetWriteBuf(len);
1044
1045     *(WORD *)buf = (WORD)len;
1046     len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf);
1047     buf[len] = 0;
1048
1049     str.UngetWriteBuf(len);
1050
1051     return str;
1052 }
1053
1054 void wxTextCtrl::SetMaxLength(unsigned long len)
1055 {
1056     ::SendMessage(GetHwnd(), EM_LIMITTEXT, len, 0);
1057 }
1058
1059 // ----------------------------------------------------------------------------
1060 // Undo/redo
1061 // ----------------------------------------------------------------------------
1062
1063 void wxTextCtrl::Undo()
1064 {
1065     if (CanUndo())
1066     {
1067         ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1068     }
1069 }
1070
1071 void wxTextCtrl::Redo()
1072 {
1073     if (CanRedo())
1074     {
1075         // Same as Undo, since Undo undoes the undo, i.e. a redo.
1076         ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1077     }
1078 }
1079
1080 bool wxTextCtrl::CanUndo() const
1081 {
1082     return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1083 }
1084
1085 bool wxTextCtrl::CanRedo() const
1086 {
1087     return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1088 }
1089
1090 // ----------------------------------------------------------------------------
1091 // implemenation details
1092 // ----------------------------------------------------------------------------
1093
1094 void wxTextCtrl::Command(wxCommandEvent & event)
1095 {
1096     SetValue(event.GetString());
1097     ProcessCommand (event);
1098 }
1099
1100 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
1101 {
1102     // By default, load the first file into the text window.
1103     if (event.GetNumberOfFiles() > 0)
1104     {
1105         LoadFile(event.GetFiles()[0]);
1106     }
1107 }
1108
1109 // ----------------------------------------------------------------------------
1110 // kbd input processing
1111 // ----------------------------------------------------------------------------
1112
1113 bool wxTextCtrl::MSWShouldPreProcessMessage(WXMSG* pMsg)
1114 {
1115     MSG *msg = (MSG *)pMsg;
1116
1117     // check for our special keys here: if we don't do it and the parent frame
1118     // uses them as accelerators, they wouldn't work at all, so we disable
1119     // usual preprocessing for them
1120     if ( msg->message == WM_KEYDOWN )
1121     {
1122         WORD vkey = (WORD) msg->wParam;
1123         if ( (HIWORD(msg->lParam) & KF_ALTDOWN) == KF_ALTDOWN )
1124         {
1125             if ( vkey == VK_BACK )
1126                 return FALSE;
1127         }
1128         else // no Alt
1129         {
1130             if ( wxIsCtrlDown() )
1131             {
1132                 switch ( vkey )
1133                 {
1134                     case 'C':
1135                     case 'V':
1136                     case 'X':
1137                     case VK_INSERT:
1138                     case VK_DELETE:
1139                     case VK_HOME:
1140                     case VK_END:
1141                         return FALSE;
1142                 }
1143             }
1144             else if ( wxIsShiftDown() )
1145             {
1146                 if ( vkey == VK_INSERT || vkey == VK_DELETE )
1147                     return FALSE;
1148             }
1149         }
1150     }
1151
1152     return wxControl::MSWShouldPreProcessMessage(pMsg);
1153 }
1154
1155 void wxTextCtrl::OnChar(wxKeyEvent& event)
1156 {
1157     switch ( event.KeyCode() )
1158     {
1159         case WXK_RETURN:
1160             if ( !(m_windowStyle & wxTE_MULTILINE) )
1161             {
1162                 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1163                 InitCommandEvent(event);
1164                 event.SetString(GetValue());
1165                 if ( GetEventHandler()->ProcessEvent(event) )
1166                     return;
1167             }
1168             //else: multiline controls need Enter for themselves
1169
1170             break;
1171
1172         case WXK_TAB:
1173             // always produce navigation event - even if we process TAB
1174             // ourselves the fact that we got here means that the user code
1175             // decided to skip processing of this TAB - probably to let it
1176             // do its default job.
1177             {
1178                 wxNavigationKeyEvent eventNav;
1179                 eventNav.SetDirection(!event.ShiftDown());
1180                 eventNav.SetWindowChange(event.ControlDown());
1181                 eventNav.SetEventObject(this);
1182
1183                 if ( GetParent()->GetEventHandler()->ProcessEvent(eventNav) )
1184                     return;
1185             }
1186             break;
1187     }
1188
1189     // no, we didn't process it
1190     event.Skip();
1191 }
1192
1193 long wxTextCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
1194 {
1195     // we always want the characters and the arrows
1196     if ( nMsg == WM_GETDLGCODE )
1197     {
1198         // we always want the chars and the arrows
1199         long lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
1200
1201         // we may have several different cases:
1202         // 1. normal case: both TAB and ENTER are used for dialog navigation
1203         // 2. ctrl which wants TAB for itself: ENTER is used to pass to the next
1204         //    control in the dialog
1205         // 3. ctrl which wants ENTER for itself: TAB is used for dialog navigation
1206         // 4. ctrl which wants both TAB and ENTER: Ctrl-ENTER is used to pass to
1207         //    the next control
1208         if ( m_windowStyle & wxTE_PROCESS_ENTER )
1209             lDlgCode |= DLGC_WANTMESSAGE;
1210         if ( m_windowStyle & wxTE_PROCESS_TAB )
1211             lDlgCode |= DLGC_WANTTAB;
1212
1213         return lDlgCode;
1214     }
1215
1216     return wxTextCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
1217 }
1218
1219 bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
1220 {
1221     switch (param)
1222     {
1223         case EN_SETFOCUS:
1224         case EN_KILLFOCUS:
1225             {
1226                 wxFocusEvent event(param == EN_KILLFOCUS ? wxEVT_KILL_FOCUS
1227                                                          : wxEVT_SET_FOCUS,
1228                                    m_windowId);
1229                 event.SetEventObject( this );
1230                 GetEventHandler()->ProcessEvent(event);
1231             }
1232             break;
1233
1234         case EN_CHANGE:
1235             {
1236                 wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, m_windowId);
1237                 InitCommandEvent(event);
1238                 event.SetString(GetValue());
1239                 ProcessCommand(event);
1240             }
1241             break;
1242
1243         case EN_MAXTEXT:
1244             // the text size limit has been hit - increase it
1245             if ( !AdjustSpaceLimit() )
1246             {
1247                 wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, m_windowId);
1248                 InitCommandEvent(event);
1249                 event.SetString(GetValue());
1250                 ProcessCommand(event);
1251             }
1252             break;
1253
1254             // the other notification messages are not processed
1255         case EN_UPDATE:
1256         case EN_ERRSPACE:
1257         case EN_HSCROLL:
1258         case EN_VSCROLL:
1259             return FALSE;
1260         default:
1261             return FALSE;
1262     }
1263
1264     // processed
1265     return TRUE;
1266 }
1267
1268 WXHBRUSH wxTextCtrl::OnCtlColor(WXHDC pDC, WXHWND WXUNUSED(pWnd), WXUINT WXUNUSED(nCtlColor),
1269 #if wxUSE_CTL3D
1270                                WXUINT message,
1271                                WXWPARAM wParam,
1272                                WXLPARAM lParam
1273 #else
1274                                WXUINT WXUNUSED(message),
1275                                WXWPARAM WXUNUSED(wParam),
1276                                WXLPARAM WXUNUSED(lParam)
1277 #endif
1278     )
1279 {
1280 #if wxUSE_CTL3D
1281     if ( m_useCtl3D )
1282     {
1283         HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
1284         return (WXHBRUSH) hbrush;
1285     }
1286 #endif // wxUSE_CTL3D
1287
1288     HDC hdc = (HDC)pDC;
1289     if (GetParent()->GetTransparentBackground())
1290         SetBkMode(hdc, TRANSPARENT);
1291     else
1292         SetBkMode(hdc, OPAQUE);
1293
1294     wxColour colBack = GetBackgroundColour();
1295
1296     if (!IsEnabled() && (GetWindowStyle() & wxTE_MULTILINE) == 0)
1297         colBack = wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE);
1298
1299     ::SetBkColor(hdc, wxColourToRGB(colBack));
1300     ::SetTextColor(hdc, wxColourToRGB(GetForegroundColour()));
1301
1302     wxBrush *brush = wxTheBrushList->FindOrCreateBrush(colBack, wxSOLID);
1303
1304     return (WXHBRUSH)brush->GetResourceHandle();
1305 }
1306
1307 // In WIN16, need to override normal erasing because
1308 // Ctl3D doesn't use the wxWindows background colour.
1309 #ifdef __WIN16__
1310 void wxTextCtrl::OnEraseBackground(wxEraseEvent& event)
1311 {
1312     wxColour col(m_backgroundColour);
1313
1314 #if wxUSE_CTL3D
1315     if (m_useCtl3D)
1316         col = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
1317 #endif
1318
1319     RECT rect;
1320     ::GetClientRect(GetHwnd(), &rect);
1321
1322     COLORREF ref = wxColourToRGB(col);
1323     HBRUSH hBrush = ::CreateSolidBrush(ref);
1324     if ( !hBrush )
1325         wxLogLastError(wxT("CreateSolidBrush"));
1326
1327     HDC hdc = (HDC)event.GetDC()->GetHDC();
1328
1329     int mode = ::SetMapMode(hdc, MM_TEXT);
1330
1331     ::FillRect(hdc, &rect, hBrush);
1332     ::DeleteObject(hBrush);
1333     ::SetMapMode(hdc, mode);
1334
1335 }
1336 #endif // Win16
1337
1338 bool wxTextCtrl::AdjustSpaceLimit()
1339 {
1340 #ifndef __WIN16__
1341     unsigned int limit = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
1342
1343     // HACK: we try to automatically extend the limit for the amount of text
1344     //       to allow (interactively) entering more than 64Kb of text under
1345     //       Win9x but we shouldn't reset the text limit which was previously
1346     //       set explicitly with SetMaxLength()
1347     //
1348     //       we could solve this by storing the limit we set in wxTextCtrl but
1349     //       to save space we prefer to simply test here the actual limit
1350     //       value: we consider that SetMaxLength() can only be called for
1351     //       values < 32Kb
1352     if ( limit < 0x8000 )
1353     {
1354         // we've got more text than limit set by SetMaxLength()
1355         return FALSE;
1356     }
1357
1358     unsigned int len = ::GetWindowTextLength(GetHwnd());
1359     if ( len >= limit )
1360     {
1361         limit = len + 0x8000;    // 32Kb
1362
1363 #if wxUSE_RICHEDIT
1364         if ( IsRich() )
1365         {
1366             // as a nice side effect, this also allows passing limit > 64Kb
1367             ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, limit);
1368         }
1369         else
1370 #endif // wxUSE_RICHEDIT
1371         {
1372             if ( limit > 0xffff )
1373             {
1374                 // this will set it to a platform-dependent maximum (much more
1375                 // than 64Kb under NT)
1376                 limit = 0;
1377             }
1378
1379             ::SendMessage(GetHwnd(), EM_LIMITTEXT, limit, 0);
1380         }
1381     }
1382 #endif // !Win16
1383
1384     // we changed the limit
1385     return TRUE;
1386 }
1387
1388 bool wxTextCtrl::AcceptsFocus() const
1389 {
1390     // we don't want focus if we can't be edited
1391     return IsEditable() && wxControl::AcceptsFocus();
1392 }
1393
1394 wxSize wxTextCtrl::DoGetBestSize() const
1395 {
1396     int cx, cy;
1397     wxGetCharSize(GetHWND(), &cx, &cy, &GetFont());
1398
1399     int wText = DEFAULT_ITEM_WIDTH;
1400
1401     int hText = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy);
1402     if ( m_windowStyle & wxTE_MULTILINE )
1403     {
1404         hText *= wxMax(GetNumberOfLines(), 5);
1405     }
1406     //else: for single line control everything is ok
1407
1408     return wxSize(wText, hText);
1409 }
1410
1411 // ----------------------------------------------------------------------------
1412 // standard handlers for standard edit menu events
1413 // ----------------------------------------------------------------------------
1414
1415 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1416 {
1417     Cut();
1418 }
1419
1420 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1421 {
1422     Copy();
1423 }
1424
1425 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1426 {
1427     Paste();
1428 }
1429
1430 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1431 {
1432     Undo();
1433 }
1434
1435 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1436 {
1437     Redo();
1438 }
1439
1440 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1441 {
1442     event.Enable( CanCut() );
1443 }
1444
1445 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1446 {
1447     event.Enable( CanCopy() );
1448 }
1449
1450 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1451 {
1452     event.Enable( CanPaste() );
1453 }
1454
1455 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1456 {
1457     event.Enable( CanUndo() );
1458 }
1459
1460 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1461 {
1462     event.Enable( CanRedo() );
1463 }
1464
1465 // the rest of the file only deals with the rich edit controls
1466 #if wxUSE_RICHEDIT
1467
1468 // ----------------------------------------------------------------------------
1469 // EN_LINK processing
1470 // ----------------------------------------------------------------------------
1471
1472 bool wxTextCtrl::MSWOnNotify(int WXUNUSED(idCtrl), WXLPARAM lParam, WXLPARAM *result)
1473 {
1474     NMHDR *hdr = (NMHDR* )lParam;
1475     if ( hdr->code == EN_LINK )
1476     {
1477         ENLINK *enlink = (ENLINK *)hdr;
1478
1479         switch ( enlink->msg )
1480         {
1481             case WM_SETCURSOR:
1482                 // ok, so it is hardcoded - do we really nee to customize it?
1483                 ::SetCursor(GetHcursorOf(wxCursor(wxCURSOR_HAND)));
1484                 *result = TRUE;
1485                 break;
1486
1487             case WM_MOUSEMOVE:
1488             case WM_LBUTTONDOWN:
1489             case WM_LBUTTONUP:
1490             case WM_LBUTTONDBLCLK:
1491             case WM_RBUTTONDOWN:
1492             case WM_RBUTTONUP:
1493             case WM_RBUTTONDBLCLK:
1494                 // send a mouse event
1495                 {
1496                     static const wxEventType eventsMouse[] =
1497                     {
1498                         wxEVT_MOTION,
1499                         wxEVT_LEFT_DOWN,
1500                         wxEVT_LEFT_UP,
1501                         wxEVT_LEFT_DCLICK,
1502                         wxEVT_RIGHT_DOWN,
1503                         wxEVT_RIGHT_UP,
1504                         wxEVT_RIGHT_DCLICK,
1505                     };
1506
1507                     // the event ids are consecutive
1508                     wxMouseEvent
1509                         evtMouse(eventsMouse[enlink->msg - WM_MOUSEMOVE]);
1510
1511                     InitMouseEvent(evtMouse,
1512                                    GET_X_LPARAM(enlink->lParam),
1513                                    GET_Y_LPARAM(enlink->lParam),
1514                                    enlink->wParam);
1515
1516                     wxTextUrlEvent event(m_windowId, evtMouse,
1517                                          enlink->chrg.cpMin,
1518                                          enlink->chrg.cpMax);
1519
1520                     InitCommandEvent(event);
1521
1522                     *result = ProcessCommand(event);
1523                 }
1524                 break;
1525         }
1526
1527         return TRUE;
1528     }
1529
1530     // not processed
1531     return FALSE;
1532 }
1533
1534 // ----------------------------------------------------------------------------
1535 // colour setting for the rich edit controls
1536 // ----------------------------------------------------------------------------
1537
1538 bool wxTextCtrl::SetBackgroundColour(const wxColour& colour)
1539 {
1540     if ( !wxTextCtrlBase::SetBackgroundColour(colour) )
1541     {
1542         // colour didn't really change
1543         return FALSE;
1544     }
1545
1546     if ( IsRich() )
1547     {
1548         // rich edit doesn't use WM_CTLCOLOR, hence we need to send
1549         // EM_SETBKGNDCOLOR additionally
1550         ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour));
1551     }
1552
1553     return TRUE;
1554 }
1555
1556 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1557 {
1558     if ( !wxTextCtrlBase::SetForegroundColour(colour) )
1559     {
1560         // colour didn't really change
1561         return FALSE;
1562     }
1563
1564     if ( IsRich() )
1565     {
1566         // change the colour of everything
1567         CHARFORMAT cf;
1568         wxZeroMemory(cf);
1569         cf.cbSize = sizeof(cf);
1570         cf.dwMask = CFM_COLOR;
1571         cf.crTextColor = wxColourToRGB(colour);
1572         ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf);
1573     }
1574
1575     return TRUE;
1576 }
1577
1578 // ----------------------------------------------------------------------------
1579 // styling support for rich edit controls
1580 // ----------------------------------------------------------------------------
1581
1582 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
1583 {
1584     if ( !IsRich() )
1585     {
1586         // can't do it with normal text control
1587         return FALSE;
1588     }
1589
1590     // the richedit 1.0 doesn't handle setting background colour, so don't
1591     // even try to do anything if it's the only thing we want to change
1592     if ( m_verRichEdit == 1 && !style.HasFont() && !style.HasTextColour() )
1593     {
1594         // nothing to do: return TRUE if there was really nothing to do and
1595         // FALSE if we failed to set bg colour
1596         return !style.HasBackgroundColour();
1597     }
1598
1599     // order the range if needed
1600     if ( start > end )
1601     {
1602         long tmp = start;
1603         start = end;
1604         end = tmp;
1605     }
1606
1607     // we can only change the format of the selection, so select the range we
1608     // want and restore the old selection later
1609     long startOld, endOld;
1610     GetSelection(&startOld, &endOld);
1611
1612     // but do we really have to change the selection?
1613     bool changeSel = start != startOld || end != endOld;
1614
1615     if ( changeSel )
1616     {
1617         DoSetSelection(start, end, FALSE /* don't scroll caret into view */);
1618     }
1619
1620     // initialize CHARFORMAT struct
1621 #if wxUSE_RICHEDIT2
1622     CHARFORMAT2 cf;
1623 #else
1624     CHARFORMAT cf;
1625 #endif
1626
1627     wxZeroMemory(cf);
1628
1629     // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
1630     // CHARFORMAT in that case
1631 #if wxUSE_RICHEDIT2
1632     if ( m_verRichEdit == 1 )
1633     {
1634         // this is the only thing the control is going to grok
1635         cf.cbSize = sizeof(CHARFORMAT);
1636     }
1637     else
1638 #endif
1639     {
1640         // CHARFORMAT or CHARFORMAT2
1641         cf.cbSize = sizeof(cf);
1642     }
1643
1644     if ( style.HasFont() )
1645     {
1646         // VZ: CFM_CHARSET doesn't seem to do anything at all in RichEdit 2.0
1647         //     but using it doesn't seem to hurt neither so leaving it for now
1648
1649         cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET |
1650                      CFM_ITALIC | CFM_BOLD | CFM_UNDERLINE;
1651
1652         // fill in data from LOGFONT but recalculate lfHeight because we need
1653         // the real height in twips and not the negative number which
1654         // wxFillLogFont() returns (this is correct in general and works with
1655         // the Windows font mapper, but not here)
1656         LOGFONT lf;
1657         wxFillLogFont(&lf, &style.GetFont());
1658         cf.yHeight = 20*style.GetFont().GetPointSize(); // 1 pt = 20 twips
1659         cf.bCharSet = lf.lfCharSet;
1660         cf.bPitchAndFamily = lf.lfPitchAndFamily;
1661         wxStrncpy( cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName) );
1662
1663         // also deal with underline/italic/bold attributes: note that we must
1664         // always set CFM_ITALIC &c bits in dwMask, even if we don't set the
1665         // style to allow clearing it
1666         if ( lf.lfItalic )
1667         {
1668             cf.dwEffects |= CFE_ITALIC;
1669         }
1670
1671         if ( lf.lfWeight == FW_BOLD )
1672         {
1673             cf.dwEffects |= CFE_BOLD;
1674         }
1675
1676         if ( lf.lfUnderline )
1677         {
1678             cf.dwEffects |= CFE_UNDERLINE;
1679         }
1680
1681         // strikeout fonts are not supported by wxWindows
1682     }
1683
1684     if ( style.HasTextColour() )
1685     {
1686         cf.dwMask |= CFM_COLOR;
1687         cf.crTextColor = wxColourToRGB(style.GetTextColour());
1688     }
1689
1690 #if wxUSE_RICHEDIT2
1691     if ( m_verRichEdit != 1 && style.HasBackgroundColour() )
1692     {
1693         cf.dwMask |= CFM_BACKCOLOR;
1694         cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
1695     }
1696 #endif // wxUSE_RICHEDIT2
1697
1698     // do format the selection
1699     bool ok = ::SendMessage(GetHwnd(), EM_SETCHARFORMAT,
1700                             SCF_SELECTION, (LPARAM)&cf) != 0;
1701     if ( !ok )
1702     {
1703         wxLogDebug(_T("SendMessage(EM_SETCHARFORMAT, SCF_SELECTION) failed"));
1704     }
1705
1706     if ( changeSel )
1707     {
1708         // restore the original selection
1709         DoSetSelection(startOld, endOld, FALSE);
1710     }
1711
1712     return ok;
1713 }
1714
1715 // ----------------------------------------------------------------------------
1716 // wxRichEditModule
1717 // ----------------------------------------------------------------------------
1718
1719 bool wxRichEditModule::OnInit()
1720 {
1721     // don't do anything - we will load it when needed
1722     return TRUE;
1723 }
1724
1725 void wxRichEditModule::OnExit()
1726 {
1727     for ( size_t i = 0; i < WXSIZEOF(ms_hRichEdit); i++ )
1728     {
1729         if ( ms_hRichEdit[i] )
1730         {
1731             ::FreeLibrary(ms_hRichEdit[i]);
1732         }
1733     }
1734 }
1735
1736 /* static */
1737 bool wxRichEditModule::Load(int version)
1738 {
1739     // we don't support loading richedit 3.0 as I don't know how to distinguish
1740     // it from 2.0 anyhow
1741     wxCHECK_MSG( version == 1 || version == 2, FALSE,
1742                  _T("incorrect richedit control version requested") );
1743
1744     // make it the index in the array
1745     version--;
1746
1747     if ( ms_hRichEdit[version] == (HINSTANCE)-1 )
1748     {
1749         // we had already tried to load it and failed
1750         return FALSE;
1751     }
1752
1753     if ( ms_hRichEdit[version] )
1754     {
1755         // we've already got this one
1756         return TRUE;
1757     }
1758
1759     wxString dllname = version ? _T("riched20") : _T("riched32");
1760     dllname += _T(".dll");
1761
1762     ms_hRichEdit[version] = ::LoadLibrary(dllname);
1763
1764     if ( !ms_hRichEdit[version] )
1765     {
1766         wxLogSysError(_("Could not load Rich Edit DLL '%s'"), dllname.c_str());
1767
1768         ms_hRichEdit[version] = (HINSTANCE)-1;
1769
1770         return FALSE;
1771     }
1772
1773     return TRUE;
1774 }
1775
1776 #endif // wxUSE_RICHEDIT
1777
1778 #endif // wxUSE_TEXTCTRL