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, checking for consistency while
 199     // doing it
 200     long msStyle = ES_LEFT | WS_TABSTOP;
 201
 202     if ( m_windowStyle & wxCLIP_SIBLINGS )
 203         msStyle |= WS_CLIPSIBLINGS;
 204
 205     if ( m_windowStyle & wxTE_MULTILINE )
 206     {
 207         wxASSERT_MSG( !(m_windowStyle & wxTE_PROCESS_ENTER),
 208                       wxT("wxTE_PROCESS_ENTER style is ignored for multiline text controls (they always process it)") );
 209
 210         msStyle |= ES_MULTILINE | ES_WANTRETURN;
 211         if ((m_windowStyle & wxTE_NO_VSCROLL) == 0)
 212             msStyle |= WS_VSCROLL;
 213         m_windowStyle |= wxTE_PROCESS_ENTER;
 214     }
 215     else // !multiline
 216     {
 217         // there is really no reason to not have this style for single line
 218         // text controls
 219         msStyle |= ES_AUTOHSCROLL;
 220     }
 221
 222     if ( m_windowStyle & wxHSCROLL )
 223         msStyle |= WS_HSCROLL | ES_AUTOHSCROLL;
 224
 225     if ( m_windowStyle & wxTE_READONLY )
 226         msStyle |= ES_READONLY;
 227
 228     if ( m_windowStyle & wxTE_PASSWORD )
 229         msStyle |= ES_PASSWORD;
 230
 231     if ( m_windowStyle & wxTE_AUTO_SCROLL )
 232         msStyle |= ES_AUTOHSCROLL;
 233
 234     if ( m_windowStyle & wxTE_NOHIDESEL )
 235         msStyle |= ES_NOHIDESEL;
 236
 237     // we always want the characters and the arrows
 238     m_lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
 239
 240     // we may have several different cases:
 241     // 1. normal case: both TAB and ENTER are used for dialog navigation
 242     // 2. ctrl which wants TAB for itself: ENTER is used to pass to the next
 243     //    control in the dialog
 244     // 3. ctrl which wants ENTER for itself: TAB is used for dialog navigation
 245     // 4. ctrl which wants both TAB and ENTER: Ctrl-ENTER is used to pass to
 246     //    the next control
 247     if ( m_windowStyle & wxTE_PROCESS_ENTER )
 248         m_lDlgCode |= DLGC_WANTMESSAGE;
 249     if ( m_windowStyle & wxTE_PROCESS_TAB )
 250         m_lDlgCode |= DLGC_WANTTAB;
 251
 252     // do create the control - either an EDIT or RICHEDIT
 253     wxString windowClass = wxT("EDIT");
 254
 255 #if wxUSE_RICHEDIT
 256     if ( m_windowStyle & wxTE_AUTO_URL )
 257     {
 258         // automatic URL detection only works in RichEdit 2.0+
 259         m_windowStyle |= wxTE_RICH2;
 260     }
 261
 262     if ( m_windowStyle & wxTE_RICH2 )
 263     {
 264         // using richedit 2.0 implies using wxTE_RICH
 265         m_windowStyle |= wxTE_RICH;
 266     }
 267
 268     // we need to load the richedit DLL before creating the rich edit control
 269     if ( m_windowStyle & wxTE_RICH )
 270     {
 271         static bool s_errorGiven = FALSE;// MT-FIXME
 272
 273         // Which version do we need? Use 1.0 by default because it is much more
 274         // like the the standard EDIT or 2.0 if explicitly requested, but use
 275         // only 2.0 in Unicode mode as 1.0 doesn't support Unicode at all
 276         //
 277         // TODO: RichEdit 3.0 is apparently capable of emulating RichEdit 1.0
 278         //       (and thus EDIT) much better than RichEdit 2.0 so we probably
 279         //       should use 3.0 if available as it is the best of both worlds -
 280         //       but as I can't test it right now I don't do it (VZ)
 281 #if wxUSE_UNICODE
 282         const int verRichEdit = 2;
 283 #else // !wxUSE_UNICODE
 284         int verRichEdit = m_windowStyle & wxTE_RICH2 ? 2 : 1;
 285 #endif // wxUSE_UNICODE/!wxUSE_UNICODE
 286
 287         // only give the error msg once if the DLL can't be loaded
 288         if ( !s_errorGiven )
 289         {
 290             // try to load the RichEdit DLL (will do nothing if already done)
 291             if ( !wxRichEditModule::Load(verRichEdit) )
 292             {
 293 #if !wxUSE_UNICODE
 294                 // try another version?
 295                 verRichEdit = 3 - verRichEdit; // 1 <-> 2
 296
 297                 if ( !wxRichEditModule::Load(verRichEdit) )
 298 #endif // wxUSE_UNICODE
 299                 {
 300                     wxLogError(_("Impossible to create a rich edit control, using simple text control instead. Please reinstall riched32.dll"));
 301
 302                     s_errorGiven = TRUE;
 303                 }
 304             }
 305         }
 306
 307         // have we managed to load any richedit version?
 308         if ( !s_errorGiven )
 309         {
 310             msStyle |= ES_AUTOVSCROLL;
 311
 312             m_verRichEdit = verRichEdit;
 313             if ( m_verRichEdit == 1 )
 314             {
 315                 windowClass = wxT("RICHEDIT");
 316             }
 317             else
 318             {
 319 #ifndef RICHEDIT_CLASS
 320                 wxString RICHEDIT_CLASS;
 321                 RICHEDIT_CLASS.Printf(_T("RichEdit%d0"), m_verRichEdit);
 322 #if wxUSE_UNICODE
 323                 RICHEDIT_CLASS += _T('W');
 324 #else // ANSI
 325                 RICHEDIT_CLASS += _T('A');
 326 #endif // Unicode/ANSI
 327 #endif // !RICHEDIT_CLASS
 328
 329                 windowClass = RICHEDIT_CLASS;
 330             }
 331         }
 332     }
 333 #endif // wxUSE_RICHEDIT
 334
 335     // we need to turn '\n's into "\r\n"s for the multiline controls
 336     wxString valueWin;
 337     if ( m_windowStyle & wxTE_MULTILINE )
 338     {
 339         valueWin = wxTextFile::Translate(value, wxTextFileType_Dos);
 340     }
 341     else // single line
 342     {
 343         valueWin = value;
 344     }
 345
 346     if ( !MSWCreateControl(windowClass, msStyle, pos, size, valueWin) )
 347         return FALSE;
 348
 349     SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
 350
 351 #if wxUSE_RICHEDIT
 352     if ( IsRich() )
 353     {
 354         // have to enable events manually
 355         LPARAM mask = ENM_CHANGE | ENM_DROPFILES | ENM_SELCHANGE | ENM_UPDATE;
 356
 357         if ( m_windowStyle & wxTE_AUTO_URL )
 358         {
 359             mask |= ENM_LINK;
 360
 361             ::SendMessage(GetHwnd(), EM_AUTOURLDETECT, TRUE, 0);
 362         }
 363
 364         ::SendMessage(GetHwnd(), EM_SETEVENTMASK, 0, mask);
 365     }
 366 #endif // wxUSE_RICHEDIT
 367
 368     return TRUE;
 369 }
 370
 371 // Make sure the window style (etc.) reflects the HWND style (roughly)
 372 void wxTextCtrl::AdoptAttributesFromHWND()
 373 {
 374     wxWindow::AdoptAttributesFromHWND();
 375
 376     HWND hWnd = GetHwnd();
 377     long style = ::GetWindowLong(hWnd, GWL_STYLE);
 378
 379     // retrieve the style to see whether this is an edit or richedit ctrl
 380 #if wxUSE_RICHEDIT
 381     wxString classname = wxGetWindowClass(GetHWND());
 382
 383     if ( classname.IsSameAs(_T("EDIT"), FALSE /* no case */) )
 384     {
 385         m_verRichEdit = 0;
 386     }
 387     else // rich edit?
 388     {
 389         wxChar c;
 390         if ( wxSscanf(classname, _T("RichEdit%d0%c"), &m_verRichEdit, &c) != 2 )
 391         {
 392             wxLogDebug(_T("Unknown edit control '%s'."), classname.c_str());
 393
 394             m_verRichEdit = 0;
 395         }
 396     }
 397 #endif // wxUSE_RICHEDIT
 398
 399     if (style & ES_MULTILINE)
 400         m_windowStyle |= wxTE_MULTILINE;
 401     if (style & ES_PASSWORD)
 402         m_windowStyle |= wxTE_PASSWORD;
 403     if (style & ES_READONLY)
 404         m_windowStyle |= wxTE_READONLY;
 405     if (style & ES_WANTRETURN)
 406         m_windowStyle |= wxTE_PROCESS_ENTER;
 407 }
 408
 409 // ----------------------------------------------------------------------------
 410 // set/get the controls text
 411 // ----------------------------------------------------------------------------
 412
 413 wxString wxTextCtrl::GetValue() const
 414 {
 415     // range 0..-1 is special for GetRange() and means to retrieve all text
 416     return GetRange(0, -1);
 417 }
 418
 419 wxString wxTextCtrl::GetRange(long from, long to) const
 420 {
 421     wxString str;
 422
 423     if ( from >= to && to != -1 )
 424     {
 425         // nothing to retrieve
 426         return str;
 427     }
 428
 429 #if wxUSE_RICHEDIT
 430     if ( IsRich() )
 431     {
 432         int len = GetWindowTextLength(GetHwnd());
 433         if ( len > from )
 434         {
 435             // alloc one extra WORD as needed by the control
 436             wxChar *p = str.GetWriteBuf(++len);
 437
 438             TEXTRANGE textRange;
 439             textRange.chrg.cpMin = from;
 440             textRange.chrg.cpMax = to == -1 ? len : to;
 441             textRange.lpstrText = p;
 442
 443             (void)SendMessage(GetHwnd(), EM_GETTEXTRANGE, 0, (LPARAM)&textRange);
 444
 445             if ( m_verRichEdit > 1 )
 446             {
 447                 // RichEdit 2.0 uses just CR ('\r') for the newlines which is
 448                 // neither Unix nor Windows style - convert it to something
 449                 // reasonable
 450                 for ( ; *p; p++ )
 451                 {
 452                     if ( *p == _T('\r') )
 453                         *p = _T('\n');
 454                 }
 455             }
 456
 457             str.UngetWriteBuf();
 458
 459             if ( m_verRichEdit == 1 )
 460             {
 461                 // convert to the canonical form - see comment below
 462                 str = wxTextFile::Translate(str, wxTextFileType_Unix);
 463             }
 464         }
 465         //else: no text at all, leave the string empty
 466     }
 467     else
 468 #endif // wxUSE_RICHEDIT
 469     {
 470         // retrieve all text
 471         str = wxGetWindowText(GetHWND());
 472
 473         // need only a range?
 474         if ( from < to )
 475         {
 476             str = str.Mid(from, to - from);
 477         }
 478
 479         // WM_GETTEXT uses standard DOS CR+LF (\r\n) convention - convert to the
 480         // canonical one (same one as above) for consistency with the other kinds
 481         // of controls and, more importantly, with the other ports
 482         str = wxTextFile::Translate(str, wxTextFileType_Unix);
 483     }
 484
 485     return str;
 486 }
 487
 488 void wxTextCtrl::SetValue(const wxString& value)
 489 {
 490     // if the text is long enough, it's faster to just set it instead of first
 491     // comparing it with the old one (chances are that it will be different
 492     // anyhow, this comparison is there to avoid flicker for small single-line
 493     // edit controls mostly)
 494     if ( (value.length() > 0x400) || (value != GetValue()) )
 495     {
 496         DoWriteText(value, FALSE /* not selection only */);
 497
 498         // mark the control as being not dirty - we changed its text, not the
 499         // user
 500         DiscardEdits();
 501
 502         // for compatibility, don't move the cursor when doing SetValue()
 503         SetInsertionPoint(0);
 504     }
 505 }
 506
 507 #if wxUSE_RICHEDIT && (!wxUSE_UNICODE || wxUSE_UNICODE_MSLU)
 508
 509 DWORD CALLBACK wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb)
 510 {
 511     *pcb = 0;
 512
 513     wchar_t *wbuf = (wchar_t *)buf;
 514     const wchar_t *wpc = *(const wchar_t **)dwCookie;
 515     while ( cb && *wpc )
 516     {
 517         *wbuf++ = *wpc++;
 518
 519         cb -= sizeof(wchar_t);
 520         (*pcb) += sizeof(wchar_t);
 521     }
 522
 523     *(const wchar_t **)dwCookie = wpc;
 524
 525     return 0;
 526 }
 527
 528 extern long wxEncodingToCodepage(wxFontEncoding encoding); // from utils.cpp
 529
 530 #if wxUSE_UNICODE_MSLU
 531 bool wxTextCtrl::StreamIn(const wxString& value,
 532                           wxFontEncoding WXUNUSED(encoding),
 533                           bool selectionOnly)
 534 {
 535     const wchar_t *wpc = value.c_str();
 536 #else // !wxUSE_UNICODE_MSLU
 537 bool wxTextCtrl::StreamIn(const wxString& value,
 538                           wxFontEncoding encoding,
 539                           bool selectionOnly)
 540 {
 541     // we have to use EM_STREAMIN to force richedit control 2.0+ to show any
 542     // text in the non default charset - otherwise it thinks it knows better
 543     // than we do and always shows it in the default one
 544
 545     // first get the Windows code page for this encoding
 546     long codepage = wxEncodingToCodepage(encoding);
 547     if ( codepage == -1 )
 548     {
 549         // unknown encoding
 550         return FALSE;
 551     }
 552
 553     // next translate to Unicode using this code page
 554     int len = ::MultiByteToWideChar(codepage, 0, value, -1, NULL, 0);
 555
 556 #if wxUSE_WCHAR_T
 557     wxWCharBuffer wchBuf(len);
 558 #else
 559     wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
 560 #endif
 561
 562     if ( !::MultiByteToWideChar(codepage, 0, value, -1,
 563                                 (wchar_t *)(const wchar_t *)wchBuf, len) )
 564     {
 565         wxLogLastError(_T("MultiByteToWideChar"));
 566     }
 567
 568     // finally, stream it in the control
 569     const wchar_t *wpc = wchBuf;
 570 #endif // wxUSE_UNICODE_MSLU
 571
 572     EDITSTREAM eds;
 573     wxZeroMemory(eds);
 574     eds.dwCookie = (DWORD)&wpc;
 575     // the cast below is needed for broken (very) old mingw32 headers
 576     eds.pfnCallback = (EDITSTREAMCALLBACK)wxRichEditStreamIn;
 577
 578     if ( !::SendMessage(GetHwnd(), EM_STREAMIN,
 579                         SF_TEXT |
 580                         SF_UNICODE |
 581                         (selectionOnly ? SFF_SELECTION : 0),
 582                         (LPARAM)&eds) || eds.dwError )
 583     {
 584         wxLogLastError(_T("EM_STREAMIN"));
 585     }
 586
 587 #if !wxUSE_WCHAR_T
 588     free(wchBuf);
 589 #endif // !wxUSE_WCHAR_T
 590
 591     return TRUE;
 592 }
 593
 594 #endif // wxUSE_RICHEDIT
 595
 596 void wxTextCtrl::WriteText(const wxString& value)
 597 {
 598     DoWriteText(value);
 599 }
 600
 601 void wxTextCtrl::DoWriteText(const wxString& value, bool selectionOnly)
 602 {
 603     wxString valueDos;
 604     if ( m_windowStyle & wxTE_MULTILINE )
 605         valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
 606     else
 607         valueDos = value;
 608
 609 #if wxUSE_RICHEDIT
 610     // there are several complications with the rich edit controls here
 611     bool done = FALSE;
 612     if ( IsRich() )
 613     {
 614         // first, ensure that the new text will be in the default style
 615         if ( !m_defaultStyle.IsDefault() )
 616         {
 617             long start, end;
 618             GetSelection(&start, &end);
 619             SetStyle(start, end, m_defaultStyle);
 620         }
 621
 622 #if wxUSE_UNICODE_MSLU
 623         // RichEdit doesn't have Unicode version of EM_REPLACESEL on Win9x,
 624         // but EM_STREAMIN works
 625         if ( wxGetOsVersion() == wxWIN95 && GetRichVersion() > 1 )
 626         {
 627            done = StreamIn(valueDos, wxFONTENCODING_SYSTEM, selectionOnly);
 628         }
 629 #endif // wxUSE_UNICODE_MSLU
 630
 631 #if !wxUSE_UNICODE
 632         // next check if the text we're inserting must be shown in a non
 633         // default charset -- this only works for RichEdit > 1.0
 634         if ( GetRichVersion() > 1 )
 635         {
 636             wxFont font = m_defaultStyle.GetFont();
 637             if ( !font.Ok() )
 638                 font = GetFont();
 639
 640             if ( font.Ok() )
 641             {
 642                wxFontEncoding encoding = font.GetEncoding();
 643                if ( encoding != wxFONTENCODING_SYSTEM )
 644                {
 645                    done = StreamIn(valueDos, encoding, selectionOnly);
 646                }
 647             }
 648         }
 649 #endif // !wxUSE_UNICODE
 650     }
 651
 652     if ( !done )
 653 #endif // wxUSE_RICHEDIT
 654     {
 655         if ( !selectionOnly )
 656         {
 657             SetSelection(-1, -1);
 658         }
 659
 660         ::SendMessage(GetHwnd(), EM_REPLACESEL, 0, (LPARAM)valueDos.c_str());
 661     }
 662
 663     AdjustSpaceLimit();
 664 }
 665
 666 void wxTextCtrl::AppendText(const wxString& text)
 667 {
 668     SetInsertionPointEnd();
 669
 670     WriteText(text);
 671 }
 672
 673 void wxTextCtrl::Clear()
 674 {
 675     ::SetWindowText(GetHwnd(), wxT(""));
 676 }
 677
 678 // ----------------------------------------------------------------------------
 679 // Clipboard operations
 680 // ----------------------------------------------------------------------------
 681
 682 void wxTextCtrl::Copy()
 683 {
 684     if (CanCopy())
 685     {
 686         ::SendMessage(GetHwnd(), WM_COPY, 0, 0L);
 687     }
 688 }
 689
 690 void wxTextCtrl::Cut()
 691 {
 692     if (CanCut())
 693     {
 694         ::SendMessage(GetHwnd(), WM_CUT, 0, 0L);
 695     }
 696 }
 697
 698 void wxTextCtrl::Paste()
 699 {
 700     if (CanPaste())
 701     {
 702         ::SendMessage(GetHwnd(), WM_PASTE, 0, 0L);
 703     }
 704 }
 705
 706 bool wxTextCtrl::CanCopy() const
 707 {
 708     // Can copy if there's a selection
 709     long from, to;
 710     GetSelection(&from, &to);
 711     return from != to;
 712 }
 713
 714 bool wxTextCtrl::CanCut() const
 715 {
 716     return CanCopy() && IsEditable();
 717 }
 718
 719 bool wxTextCtrl::CanPaste() const
 720 {
 721     if ( !IsEditable() )
 722         return FALSE;
 723
 724 #if wxUSE_RICHEDIT
 725     if ( IsRich() )
 726     {
 727         UINT cf = 0; // 0 == any format
 728
 729         return ::SendMessage(GetHwnd(), EM_CANPASTE, cf, 0) != 0;
 730     }
 731 #endif // wxUSE_RICHEDIT
 732
 733     // Standard edit control: check for straight text on clipboard
 734     if ( !::OpenClipboard(GetHwndOf(wxTheApp->GetTopWindow())) )
 735         return FALSE;
 736
 737     bool isTextAvailable = ::IsClipboardFormatAvailable(CF_TEXT) != 0;
 738     ::CloseClipboard();
 739
 740     return isTextAvailable;
 741 }
 742
 743 // ----------------------------------------------------------------------------
 744 // Accessors
 745 // ----------------------------------------------------------------------------
 746
 747 void wxTextCtrl::SetEditable(bool editable)
 748 {
 749     HWND hWnd = GetHwnd();
 750     SendMessage(hWnd, EM_SETREADONLY, (WPARAM)!editable, (LPARAM)0L);
 751 }
 752
 753 void wxTextCtrl::SetInsertionPoint(long pos)
 754 {
 755     DoSetSelection(pos, pos);
 756 }
 757
 758 void wxTextCtrl::SetInsertionPointEnd()
 759 {
 760     long pos;
 761
 762 #if wxUSE_RICHEDIT
 763     if ( m_verRichEdit == 1 )
 764     {
 765         // we don't have to waste time calling GetLastPosition() in this case
 766         pos = -1;
 767     }
 768     else // !RichEdit 1.0
 769 #endif // wxUSE_RICHEDIT
 770     {
 771         pos = GetLastPosition();
 772     }
 773
 774     SetInsertionPoint(pos);
 775 }
 776
 777 long wxTextCtrl::GetInsertionPoint() const
 778 {
 779 #if wxUSE_RICHEDIT
 780     if ( IsRich() )
 781     {
 782         CHARRANGE range;
 783         range.cpMin = 0;
 784         range.cpMax = 0;
 785         SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
 786         return range.cpMin;
 787     }
 788 #endif // wxUSE_RICHEDIT
 789
 790     DWORD Pos = (DWORD)SendMessage(GetHwnd(), EM_GETSEL, 0, 0L);
 791     return Pos & 0xFFFF;
 792 }
 793
 794 long wxTextCtrl::GetLastPosition() const
 795 {
 796     int numLines = GetNumberOfLines();
 797     long posStartLastLine = XYToPosition(0, numLines - 1);
 798
 799     long lenLastLine = GetLengthOfLineContainingPos(posStartLastLine);
 800
 801     return posStartLastLine + lenLastLine;
 802 }
 803
 804 // If the return values from and to are the same, there is no
 805 // selection.
 806 void wxTextCtrl::GetSelection(long* from, long* to) const
 807 {
 808 #if wxUSE_RICHEDIT
 809     if ( IsRich() )
 810     {
 811         CHARRANGE charRange;
 812         ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &charRange);
 813
 814         *from = charRange.cpMin;
 815         *to = charRange.cpMax;
 816     }
 817     else
 818 #endif // !wxUSE_RICHEDIT
 819     {
 820         DWORD dwStart, dwEnd;
 821         ::SendMessage(GetHwnd(), EM_GETSEL, (WPARAM)&dwStart, (LPARAM)&dwEnd);
 822
 823         *from = dwStart;
 824         *to = dwEnd;
 825     }
 826 }
 827
 828 bool wxTextCtrl::IsEditable() const
 829 {
 830     long style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
 831
 832     return (style & ES_READONLY) == 0;
 833 }
 834
 835 // ----------------------------------------------------------------------------
 836 // selection
 837 // ----------------------------------------------------------------------------
 838
 839 void wxTextCtrl::SetSelection(long from, long to)
 840 {
 841     // if from and to are both -1, it means (in wxWindows) that all text should
 842     // be selected - translate into Windows convention
 843     if ( (from == -1) && (to == -1) )
 844     {
 845         from = 0;
 846         to = -1;
 847     }
 848
 849     DoSetSelection(from, to);
 850 }
 851
 852 void wxTextCtrl::DoSetSelection(long from, long to, bool scrollCaret)
 853 {
 854     HWND hWnd = GetHwnd();
 855
 856 #ifdef __WIN32__
 857 #if wxUSE_RICHEDIT
 858     if ( IsRich() )
 859     {
 860         CHARRANGE range;
 861         range.cpMin = from;
 862         range.cpMax = to;
 863         SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM) &range);
 864     }
 865     else
 866 #endif // wxUSE_RICHEDIT
 867     {
 868         SendMessage(hWnd, EM_SETSEL, (WPARAM)from, (LPARAM)to);
 869     }
 870
 871     if ( scrollCaret )
 872     {
 873         SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
 874     }
 875 #else // Win16
 876     // WPARAM is 0: selection is scrolled into view
 877     SendMessage(hWnd, EM_SETSEL, (WPARAM)0, (LPARAM)MAKELONG(from, to));
 878 #endif // Win32/16
 879 }
 880
 881 // ----------------------------------------------------------------------------
 882 // Editing
 883 // ----------------------------------------------------------------------------
 884
 885 void wxTextCtrl::Replace(long from, long to, const wxString& value)
 886 {
 887     // Set selection and remove it
 888     DoSetSelection(from, to, FALSE /* don't scroll caret into view */);
 889
 890     SendMessage(GetHwnd(), EM_REPLACESEL,
 891 #ifdef __WIN32__
 892                 TRUE,
 893 #else
 894                 FALSE,
 895 #endif
 896                 (LPARAM)value.c_str());
 897 }
 898
 899 void wxTextCtrl::Remove(long from, long to)
 900 {
 901     Replace(from, to, _T(""));
 902 }
 903
 904 bool wxTextCtrl::LoadFile(const wxString& file)
 905 {
 906     if ( wxTextCtrlBase::LoadFile(file) )
 907     {
 908         // update the size limit if needed
 909         AdjustSpaceLimit();
 910
 911         return TRUE;
 912     }
 913
 914     return FALSE;
 915 }
 916
 917 bool wxTextCtrl::IsModified() const
 918 {
 919     return SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0;
 920 }
 921
 922 // Makes 'unmodified'
 923 void wxTextCtrl::DiscardEdits()
 924 {
 925     SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0L);
 926 }
 927
 928 int wxTextCtrl::GetNumberOfLines() const
 929 {
 930     return (int)SendMessage(GetHwnd(), EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0);
 931 }
 932
 933 long wxTextCtrl::XYToPosition(long x, long y) const
 934 {
 935     // This gets the char index for the _beginning_ of this line
 936     long charIndex = SendMessage(GetHwnd(), EM_LINEINDEX, (WPARAM)y, (LPARAM)0);
 937
 938     return charIndex + x;
 939 }
 940
 941 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
 942 {
 943     HWND hWnd = GetHwnd();
 944
 945     // This gets the line number containing the character
 946     long lineNo;
 947 #if wxUSE_RICHEDIT
 948     if ( IsRich() )
 949     {
 950         lineNo = SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, (LPARAM)pos);
 951     }
 952     else
 953 #endif // wxUSE_RICHEDIT
 954     {
 955         lineNo = SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, 0);
 956     }
 957
 958     if ( lineNo == -1 )
 959     {
 960         // no such line
 961         return FALSE;
 962     }
 963
 964     // This gets the char index for the _beginning_ of this line
 965     long charIndex = SendMessage(hWnd, EM_LINEINDEX, (WPARAM)lineNo, (LPARAM)0);
 966     if ( charIndex == -1 )
 967     {
 968         return FALSE;
 969     }
 970
 971     // The X position must therefore be the different between pos and charIndex
 972     if ( x )
 973         *x = pos - charIndex;
 974     if ( y )
 975         *y = lineNo;
 976
 977     return TRUE;
 978 }
 979
 980 void wxTextCtrl::ShowPosition(long pos)
 981 {
 982     HWND hWnd = GetHwnd();
 983
 984     // To scroll to a position, we pass the number of lines and characters
 985     // to scroll *by*. This means that we need to:
 986     // (1) Find the line position of the current line.
 987     // (2) Find the line position of pos.
 988     // (3) Scroll by (pos - current).
 989     // For now, ignore the horizontal scrolling.
 990
 991     // Is this where scrolling is relative to - the line containing the caret?
 992     // Or is the first visible line??? Try first visible line.
 993 //    int currentLineLineNo1 = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)-1, (LPARAM)0L);
 994
 995     int currentLineLineNo = (int)SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, (WPARAM)0, (LPARAM)0L);
 996
 997     int specifiedLineLineNo = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, (LPARAM)0L);
 998
 999     int linesToScroll = specifiedLineLineNo - currentLineLineNo;
1000
1001     if (linesToScroll != 0)
1002       (void)SendMessage(hWnd, EM_LINESCROLL, (WPARAM)0, (LPARAM)linesToScroll);
1003 }
1004
1005 long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const
1006 {
1007     return ::SendMessage(GetHwnd(), EM_LINELENGTH, (WPARAM)pos, 0);
1008 }
1009
1010 int wxTextCtrl::GetLineLength(long lineNo) const
1011 {
1012     long pos = XYToPosition(0, lineNo);
1013
1014     return GetLengthOfLineContainingPos(pos);
1015 }
1016
1017 wxString wxTextCtrl::GetLineText(long lineNo) const
1018 {
1019     size_t len = (size_t)GetLineLength(lineNo) + 1;
1020
1021     // there must be at least enough place for the length WORD in the
1022     // buffer
1023     len += sizeof(WORD);
1024
1025     wxString str;
1026     wxChar *buf = str.GetWriteBuf(len);
1027
1028     *(WORD *)buf = (WORD)len;
1029     len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf);
1030     buf[len] = 0;
1031
1032     str.UngetWriteBuf(len);
1033
1034     return str;
1035 }
1036
1037 void wxTextCtrl::SetMaxLength(unsigned long len)
1038 {
1039     ::SendMessage(GetHwnd(), EM_LIMITTEXT, len, 0);
1040 }
1041
1042 // ----------------------------------------------------------------------------
1043 // Undo/redo
1044 // ----------------------------------------------------------------------------
1045
1046 void wxTextCtrl::Undo()
1047 {
1048     if (CanUndo())
1049     {
1050         ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1051     }
1052 }
1053
1054 void wxTextCtrl::Redo()
1055 {
1056     if (CanRedo())
1057     {
1058         // Same as Undo, since Undo undoes the undo, i.e. a redo.
1059         ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1060     }
1061 }
1062
1063 bool wxTextCtrl::CanUndo() const
1064 {
1065     return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1066 }
1067
1068 bool wxTextCtrl::CanRedo() const
1069 {
1070     return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1071 }
1072
1073 // ----------------------------------------------------------------------------
1074 // implemenation details
1075 // ----------------------------------------------------------------------------
1076
1077 void wxTextCtrl::Command(wxCommandEvent & event)
1078 {
1079     SetValue(event.GetString());
1080     ProcessCommand (event);
1081 }
1082
1083 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
1084 {
1085     // By default, load the first file into the text window.
1086     if (event.GetNumberOfFiles() > 0)
1087     {
1088         LoadFile(event.GetFiles()[0]);
1089     }
1090 }
1091
1092 // ----------------------------------------------------------------------------
1093 // kbd input processing
1094 // ----------------------------------------------------------------------------
1095
1096 bool wxTextCtrl::MSWShouldPreProcessMessage(WXMSG* pMsg)
1097 {
1098     MSG *msg = (MSG *)pMsg;
1099
1100     // check for our special keys here: if we don't do it and the parent frame
1101     // uses them as accelerators, they wouldn't work at all, so we disable
1102     // usual preprocessing for them
1103     if ( msg->message == WM_KEYDOWN )
1104     {
1105         WORD vkey = msg->wParam;
1106         if ( (HIWORD(msg->lParam) & KF_ALTDOWN) == KF_ALTDOWN )
1107         {
1108             if ( vkey == VK_BACK )
1109                 return FALSE;
1110         }
1111         else // no Alt
1112         {
1113             if ( wxIsCtrlDown() )
1114             {
1115                 switch ( vkey )
1116                 {
1117                     case 'C':
1118                     case 'V':
1119                     case 'X':
1120                     case VK_INSERT:
1121                     case VK_DELETE:
1122                     case VK_HOME:
1123                     case VK_END:
1124                         return FALSE;
1125                 }
1126             }
1127             else if ( wxIsShiftDown() )
1128             {
1129                 if ( vkey == VK_INSERT || vkey == VK_DELETE )
1130                     return FALSE;
1131             }
1132         }
1133     }
1134
1135     return wxControl::MSWShouldPreProcessMessage(pMsg);
1136 }
1137
1138 void wxTextCtrl::OnChar(wxKeyEvent& event)
1139 {
1140     switch ( event.KeyCode() )
1141     {
1142         case WXK_RETURN:
1143             if ( !(m_windowStyle & wxTE_MULTILINE) )
1144             {
1145                 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1146                 InitCommandEvent(event);
1147                 event.SetString(GetValue());
1148                 if ( GetEventHandler()->ProcessEvent(event) )
1149                     return;
1150             }
1151             //else: multiline controls need Enter for themselves
1152
1153             break;
1154
1155         case WXK_TAB:
1156             // always produce navigation event - even if we process TAB
1157             // ourselves the fact that we got here means that the user code
1158             // decided to skip processing of this TAB - probably to let it
1159             // do its default job.
1160             {
1161                 wxNavigationKeyEvent eventNav;
1162                 eventNav.SetDirection(!event.ShiftDown());
1163                 eventNav.SetWindowChange(event.ControlDown());
1164                 eventNav.SetEventObject(this);
1165
1166                 if ( GetParent()->GetEventHandler()->ProcessEvent(eventNav) )
1167                     return;
1168             }
1169             break;
1170     }
1171
1172     // no, we didn't process it
1173     event.Skip();
1174 }
1175
1176 bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
1177 {
1178     switch (param)
1179     {
1180         case EN_SETFOCUS:
1181         case EN_KILLFOCUS:
1182             {
1183                 wxFocusEvent event(param == EN_KILLFOCUS ? wxEVT_KILL_FOCUS
1184                                                          : wxEVT_SET_FOCUS,
1185                                    m_windowId);
1186                 event.SetEventObject( this );
1187                 GetEventHandler()->ProcessEvent(event);
1188             }
1189             break;
1190
1191         case EN_CHANGE:
1192             {
1193                 wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, m_windowId);
1194                 InitCommandEvent(event);
1195                 event.SetString(GetValue());
1196                 ProcessCommand(event);
1197             }
1198             break;
1199
1200         case EN_MAXTEXT:
1201             // the text size limit has been hit - increase it
1202             if ( !AdjustSpaceLimit() )
1203             {
1204                 wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, m_windowId);
1205                 InitCommandEvent(event);
1206                 event.SetString(GetValue());
1207                 ProcessCommand(event);
1208             }
1209             break;
1210
1211             // the other notification messages are not processed
1212         case EN_UPDATE:
1213         case EN_ERRSPACE:
1214         case EN_HSCROLL:
1215         case EN_VSCROLL:
1216             return FALSE;
1217         default:
1218             return FALSE;
1219     }
1220
1221     // processed
1222     return TRUE;
1223 }
1224
1225 WXHBRUSH wxTextCtrl::OnCtlColor(WXHDC pDC, WXHWND WXUNUSED(pWnd), WXUINT WXUNUSED(nCtlColor),
1226 #if wxUSE_CTL3D
1227                                WXUINT message,
1228                                WXWPARAM wParam,
1229                                WXLPARAM lParam
1230 #else
1231                                WXUINT WXUNUSED(message),
1232                                WXWPARAM WXUNUSED(wParam),
1233                                WXLPARAM WXUNUSED(lParam)
1234 #endif
1235     )
1236 {
1237 #if wxUSE_CTL3D
1238     if ( m_useCtl3D )
1239     {
1240         HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
1241         return (WXHBRUSH) hbrush;
1242     }
1243 #endif // wxUSE_CTL3D
1244
1245     HDC hdc = (HDC)pDC;
1246     if (GetParent()->GetTransparentBackground())
1247         SetBkMode(hdc, TRANSPARENT);
1248     else
1249         SetBkMode(hdc, OPAQUE);
1250
1251     wxColour colBack = GetBackgroundColour();
1252
1253     if (!IsEnabled() && (GetWindowStyle() & wxTE_MULTILINE) == 0)
1254         colBack = wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE);
1255
1256     ::SetBkColor(hdc, wxColourToRGB(colBack));
1257     ::SetTextColor(hdc, wxColourToRGB(GetForegroundColour()));
1258
1259     wxBrush *brush = wxTheBrushList->FindOrCreateBrush(colBack, wxSOLID);
1260
1261     return (WXHBRUSH)brush->GetResourceHandle();
1262 }
1263
1264 // In WIN16, need to override normal erasing because
1265 // Ctl3D doesn't use the wxWindows background colour.
1266 #ifdef __WIN16__
1267 void wxTextCtrl::OnEraseBackground(wxEraseEvent& event)
1268 {
1269     wxColour col(m_backgroundColour);
1270
1271 #if wxUSE_CTL3D
1272     if (m_useCtl3D)
1273         col = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
1274 #endif
1275
1276     RECT rect;
1277     ::GetClientRect(GetHwnd(), &rect);
1278
1279     COLORREF ref = wxColourToRGB(col);
1280     HBRUSH hBrush = ::CreateSolidBrush(ref);
1281     if ( !hBrush )
1282         wxLogLastError(wxT("CreateSolidBrush"));
1283
1284     HDC hdc = (HDC)event.GetDC()->GetHDC();
1285
1286     int mode = ::SetMapMode(hdc, MM_TEXT);
1287
1288     ::FillRect(hdc, &rect, hBrush);
1289     ::DeleteObject(hBrush);
1290     ::SetMapMode(hdc, mode);
1291
1292 }
1293 #endif // Win16
1294
1295 bool wxTextCtrl::AdjustSpaceLimit()
1296 {
1297 #ifndef __WIN16__
1298     unsigned int limit = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
1299
1300     // HACK: we try to automatically extend the limit for the amount of text
1301     //       to allow (interactively) entering more than 64Kb of text under
1302     //       Win9x but we shouldn't reset the text limit which was previously
1303     //       set explicitly with SetMaxLength()
1304     //
1305     //       we could solve this by storing the limit we set in wxTextCtrl but
1306     //       to save space we prefer to simply test here the actual limit
1307     //       value: we consider that SetMaxLength() can only be called for
1308     //       values < 32Kb
1309     if ( limit < 0x8000 )
1310     {
1311         // we've got more text than limit set by SetMaxLength()
1312         return FALSE;
1313     }
1314
1315     unsigned int len = ::GetWindowTextLength(GetHwnd());
1316     if ( len >= limit )
1317     {
1318         limit = len + 0x8000;    // 32Kb
1319
1320 #if wxUSE_RICHEDIT
1321         if ( IsRich() )
1322         {
1323             // as a nice side effect, this also allows passing limit > 64Kb
1324             ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, limit);
1325         }
1326         else
1327 #endif // wxUSE_RICHEDIT
1328         {
1329             if ( limit > 0xffff )
1330             {
1331                 // this will set it to a platform-dependent maximum (much more
1332                 // than 64Kb under NT)
1333                 limit = 0;
1334             }
1335
1336             ::SendMessage(GetHwnd(), EM_LIMITTEXT, limit, 0);
1337         }
1338     }
1339 #endif // !Win16
1340
1341     // we changed the limit
1342     return TRUE;
1343 }
1344
1345 bool wxTextCtrl::AcceptsFocus() const
1346 {
1347     // we don't want focus if we can't be edited
1348     return IsEditable() && wxControl::AcceptsFocus();
1349 }
1350
1351 wxSize wxTextCtrl::DoGetBestSize() const
1352 {
1353     int cx, cy;
1354     wxGetCharSize(GetHWND(), &cx, &cy, &GetFont());
1355
1356     int wText = DEFAULT_ITEM_WIDTH;
1357
1358     int hText = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy);
1359     if ( m_windowStyle & wxTE_MULTILINE )
1360     {
1361         hText *= wxMax(GetNumberOfLines(), 5);
1362     }
1363     //else: for single line control everything is ok
1364
1365     return wxSize(wText, hText);
1366 }
1367
1368 // ----------------------------------------------------------------------------
1369 // standard handlers for standard edit menu events
1370 // ----------------------------------------------------------------------------
1371
1372 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1373 {
1374     Cut();
1375 }
1376
1377 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1378 {
1379     Copy();
1380 }
1381
1382 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1383 {
1384     Paste();
1385 }
1386
1387 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1388 {
1389     Undo();
1390 }
1391
1392 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1393 {
1394     Redo();
1395 }
1396
1397 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1398 {
1399     event.Enable( CanCut() );
1400 }
1401
1402 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1403 {
1404     event.Enable( CanCopy() );
1405 }
1406
1407 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1408 {
1409     event.Enable( CanPaste() );
1410 }
1411
1412 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1413 {
1414     event.Enable( CanUndo() );
1415 }
1416
1417 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1418 {
1419     event.Enable( CanRedo() );
1420 }
1421
1422 // the rest of the file only deals with the rich edit controls
1423 #if wxUSE_RICHEDIT
1424
1425 // ----------------------------------------------------------------------------
1426 // EN_LINK processing
1427 // ----------------------------------------------------------------------------
1428
1429 bool wxTextCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
1430 {
1431     NMHDR *hdr = (NMHDR* )lParam;
1432     if ( hdr->code == EN_LINK )
1433     {
1434         ENLINK *enlink = (ENLINK *)hdr;
1435
1436         switch ( enlink->msg )
1437         {
1438             case WM_SETCURSOR:
1439                 // ok, so it is hardcoded - do we really nee to customize it?
1440                 ::SetCursor(GetHcursorOf(wxCursor(wxCURSOR_HAND)));
1441                 *result = TRUE;
1442                 break;
1443
1444             case WM_MOUSEMOVE:
1445             case WM_LBUTTONDOWN:
1446             case WM_LBUTTONUP:
1447             case WM_LBUTTONDBLCLK:
1448             case WM_RBUTTONDOWN:
1449             case WM_RBUTTONUP:
1450             case WM_RBUTTONDBLCLK:
1451                 // send a mouse event
1452                 {
1453                     static const wxEventType eventsMouse[] =
1454                     {
1455                         wxEVT_MOTION,
1456                         wxEVT_LEFT_DOWN,
1457                         wxEVT_LEFT_UP,
1458                         wxEVT_LEFT_DCLICK,
1459                         wxEVT_RIGHT_DOWN,
1460                         wxEVT_RIGHT_UP,
1461                         wxEVT_RIGHT_DCLICK,
1462                     };
1463
1464                     // the event ids are consecutive
1465                     wxMouseEvent
1466                         evtMouse(eventsMouse[enlink->msg - WM_MOUSEMOVE]);
1467
1468                     InitMouseEvent(evtMouse,
1469                                    GET_X_LPARAM(enlink->lParam),
1470                                    GET_Y_LPARAM(enlink->lParam),
1471                                    enlink->wParam);
1472
1473                     wxTextUrlEvent event(m_windowId, evtMouse,
1474                                          enlink->chrg.cpMin,
1475                                          enlink->chrg.cpMax);
1476
1477                     InitCommandEvent(event);
1478
1479                     *result = ProcessCommand(event);
1480                 }
1481                 break;
1482         }
1483
1484         return TRUE;
1485     }
1486
1487     // not processed
1488     return FALSE;
1489 }
1490
1491 // ----------------------------------------------------------------------------
1492 // colour setting for the rich edit controls
1493 // ----------------------------------------------------------------------------
1494
1495 bool wxTextCtrl::SetBackgroundColour(const wxColour& colour)
1496 {
1497     if ( !wxTextCtrlBase::SetBackgroundColour(colour) )
1498     {
1499         // colour didn't really change
1500         return FALSE;
1501     }
1502
1503     if ( IsRich() )
1504     {
1505         // rich edit doesn't use WM_CTLCOLOR, hence we need to send
1506         // EM_SETBKGNDCOLOR additionally
1507         ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour));
1508     }
1509
1510     return TRUE;
1511 }
1512
1513 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1514 {
1515     if ( !wxTextCtrlBase::SetForegroundColour(colour) )
1516     {
1517         // colour didn't really change
1518         return FALSE;
1519     }
1520
1521     if ( IsRich() )
1522     {
1523         // change the colour of everything
1524         CHARFORMAT cf;
1525         wxZeroMemory(cf);
1526         cf.cbSize = sizeof(cf);
1527         cf.dwMask = CFM_COLOR;
1528         cf.crTextColor = wxColourToRGB(colour);
1529         ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf);
1530     }
1531
1532     return TRUE;
1533 }
1534
1535 // ----------------------------------------------------------------------------
1536 // styling support for rich edit controls
1537 // ----------------------------------------------------------------------------
1538
1539 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
1540 {
1541     if ( !IsRich() )
1542     {
1543         // can't do it with normal text control
1544         return FALSE;
1545     }
1546
1547     // the richedit 1.0 doesn't handle setting background colour, so don't
1548     // even try to do anything if it's the only thing we want to change
1549     if ( m_verRichEdit == 1 && !style.HasFont() && !style.HasTextColour() )
1550     {
1551         // nothing to do: return TRUE if there was really nothing to do and
1552         // FALSE if we failed to set bg colour
1553         return !style.HasBackgroundColour();
1554     }
1555
1556     // order the range if needed
1557     if ( start > end )
1558     {
1559         long tmp = start;
1560         start = end;
1561         end = tmp;
1562     }
1563
1564     // we can only change the format of the selection, so select the range we
1565     // want and restore the old selection later
1566     long startOld, endOld;
1567     GetSelection(&startOld, &endOld);
1568
1569     // but do we really have to change the selection?
1570     bool changeSel = start != startOld || end != endOld;
1571
1572     if ( changeSel )
1573     {
1574         DoSetSelection(start, end, FALSE /* don't scroll caret into view */);
1575     }
1576
1577     // initialize CHARFORMAT struct
1578 #if wxUSE_RICHEDIT2
1579     CHARFORMAT2 cf;
1580 #else
1581     CHARFORMAT cf;
1582 #endif
1583
1584     wxZeroMemory(cf);
1585
1586     // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
1587     // CHARFORMAT in that case
1588 #if wxUSE_RICHEDIT2
1589     if ( m_verRichEdit == 1 )
1590     {
1591         // this is the only thing the control is going to grok
1592         cf.cbSize = sizeof(CHARFORMAT);
1593     }
1594     else
1595 #endif
1596     {
1597         // CHARFORMAT or CHARFORMAT2
1598         cf.cbSize = sizeof(cf);
1599     }
1600
1601     if ( style.HasFont() )
1602     {
1603         // VZ: CFM_CHARSET doesn't seem to do anything at all in RichEdit 2.0
1604         //     but using it doesn't seem to hurt neither so leaving it for now
1605
1606         cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET |
1607                      CFM_ITALIC | CFM_BOLD | CFM_UNDERLINE;
1608
1609         // fill in data from LOGFONT but recalculate lfHeight because we need
1610         // the real height in twips and not the negative number which
1611         // wxFillLogFont() returns (this is correct in general and works with
1612         // the Windows font mapper, but not here)
1613         LOGFONT lf;
1614         wxFillLogFont(&lf, &style.GetFont());
1615         cf.yHeight = 20*style.GetFont().GetPointSize(); // 1 pt = 20 twips
1616         cf.bCharSet = lf.lfCharSet;
1617         cf.bPitchAndFamily = lf.lfPitchAndFamily;
1618         wxStrncpy( cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName) );
1619
1620         // also deal with underline/italic/bold attributes: note that we must
1621         // always set CFM_ITALIC &c bits in dwMask, even if we don't set the
1622         // style to allow clearing it
1623         if ( lf.lfItalic )
1624         {
1625             cf.dwEffects |= CFE_ITALIC;
1626         }
1627
1628         if ( lf.lfWeight == FW_BOLD )
1629         {
1630             cf.dwEffects |= CFE_BOLD;
1631         }
1632
1633         if ( lf.lfUnderline )
1634         {
1635             cf.dwEffects |= CFE_UNDERLINE;
1636         }
1637
1638         // strikeout fonts are not supported by wxWindows
1639     }
1640
1641     if ( style.HasTextColour() )
1642     {
1643         cf.dwMask |= CFM_COLOR;
1644         cf.crTextColor = wxColourToRGB(style.GetTextColour());
1645     }
1646
1647 #if wxUSE_RICHEDIT2
1648     if ( m_verRichEdit != 1 && style.HasBackgroundColour() )
1649     {
1650         cf.dwMask |= CFM_BACKCOLOR;
1651         cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
1652     }
1653 #endif // wxUSE_RICHEDIT2
1654
1655     // do format the selection
1656     bool ok = ::SendMessage(GetHwnd(), EM_SETCHARFORMAT,
1657                             SCF_SELECTION, (LPARAM)&cf) != 0;
1658     if ( !ok )
1659     {
1660         wxLogDebug(_T("SendMessage(EM_SETCHARFORMAT, SCF_SELECTION) failed"));
1661     }
1662
1663     if ( changeSel )
1664     {
1665         // restore the original selection
1666         DoSetSelection(startOld, endOld, FALSE);
1667     }
1668
1669     return ok;
1670 }
1671
1672 // ----------------------------------------------------------------------------
1673 // wxRichEditModule
1674 // ----------------------------------------------------------------------------
1675
1676 bool wxRichEditModule::OnInit()
1677 {
1678     // don't do anything - we will load it when needed
1679     return TRUE;
1680 }
1681
1682 void wxRichEditModule::OnExit()
1683 {
1684     for ( int i = 0; i < WXSIZEOF(ms_hRichEdit); i++ )
1685     {
1686         if ( ms_hRichEdit[i] )
1687         {
1688             ::FreeLibrary(ms_hRichEdit[i]);
1689         }
1690     }
1691 }
1692
1693 /* static */
1694 bool wxRichEditModule::Load(int version)
1695 {
1696     // we don't support loading richedit 3.0 as I don't know how to distinguish
1697     // it from 2.0 anyhow
1698     wxCHECK_MSG( version == 1 || version == 2, FALSE,
1699                  _T("incorrect richedit control version requested") );
1700
1701     // make it the index in the array
1702     version--;
1703
1704     if ( ms_hRichEdit[version] == (HINSTANCE)-1 )
1705     {
1706         // we had already tried to load it and failed
1707         return FALSE;
1708     }
1709
1710     if ( ms_hRichEdit[version] )
1711     {
1712         // we've already got this one
1713         return TRUE;
1714     }
1715
1716     wxString dllname = version ? _T("riched20") : _T("riched32");
1717     dllname += _T(".dll");
1718
1719     ms_hRichEdit[version] = ::LoadLibrary(dllname);
1720
1721     if ( !ms_hRichEdit[version] )
1722     {
1723         wxLogSysError(_("Could not load Rich Edit DLL '%s'"), dllname.c_str());
1724
1725         ms_hRichEdit[version] = (HINSTANCE)-1;
1726
1727         return FALSE;
1728     }
1729
1730     return TRUE;
1731 }
1732
1733 #endif // wxUSE_RICHEDIT
1734
1735 #endif // wxUSE_TEXTCTRL