src/msw/textctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        msw/textctrl.cpp
   3 // Purpose:     wxTextCtrl
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  17     #pragma implementation "textctrl.h"
  18 #endif
  19
  20 // ----------------------------------------------------------------------------
  21 // headers
  22 // ----------------------------------------------------------------------------
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #if wxUSE_TEXTCTRL
  32
  33 #ifndef WX_PRECOMP
  34     #include "wx/textctrl.h"
  35     #include "wx/settings.h"
  36     #include "wx/brush.h"
  37     #include "wx/utils.h"
  38     #include "wx/intl.h"
  39     #include "wx/log.h"
  40     #include "wx/app.h"
  41     #include "wx/menu.h"
  42 #endif
  43
  44 #include "wx/module.h"
  45
  46 #if wxUSE_CLIPBOARD
  47     #include "wx/clipbrd.h"
  48 #endif
  49
  50 #include "wx/textfile.h"
  51
  52 #include <windowsx.h>
  53
  54 #include "wx/msw/private.h"
  55 #include "wx/msw/winundef.h"
  56
  57 #include <string.h>
  58 #include <stdlib.h>
  59
  60 #ifndef __WXWINCE__
  61 #include <sys/types.h>
  62 #endif
  63
  64 #if wxUSE_RICHEDIT
  65
  66 // old mingw32 has richedit stuff directly in windows.h and doesn't have
  67 // richedit.h at all
  68 #if !defined(__GNUWIN32_OLD__) || defined(__CYGWIN10__)
  69     #include <richedit.h>
  70 #endif
  71
  72 #include "wx/msw/missing.h"
  73
  74 #endif // wxUSE_RICHEDIT
  75
  76 // ----------------------------------------------------------------------------
  77 // private classes
  78 // ----------------------------------------------------------------------------
  79
  80 #if wxUSE_RICHEDIT
  81
  82 // this module initializes RichEdit DLL(s) if needed
  83 class wxRichEditModule : public wxModule
  84 {
  85 public:
  86     virtual bool OnInit();
  87     virtual void OnExit();
  88
  89     // load the richedit DLL of at least of required version
  90     static bool Load(int version = 1);
  91
  92 private:
  93     // the handles to richedit 1.0 and 2.0 (or 3.0) DLLs
  94     static HINSTANCE ms_hRichEdit[2];
  95
  96     DECLARE_DYNAMIC_CLASS(wxRichEditModule)
  97 };
  98
  99 HINSTANCE wxRichEditModule::ms_hRichEdit[2] = { NULL, NULL };
 100
 101 IMPLEMENT_DYNAMIC_CLASS(wxRichEditModule, wxModule)
 102
 103 #endif // wxUSE_RICHEDIT
 104
 105 // ----------------------------------------------------------------------------
 106 // event tables and other macros
 107 // ----------------------------------------------------------------------------
 108
 109 #if wxUSE_EXTENDED_RTTI
 110 WX_DEFINE_FLAGS( wxTextCtrlStyle )
 111
 112 wxBEGIN_FLAGS( wxTextCtrlStyle )
 113     // new style border flags, we put them first to
 114     // use them for streaming out
 115     wxFLAGS_MEMBER(wxBORDER_SIMPLE)
 116     wxFLAGS_MEMBER(wxBORDER_SUNKEN)
 117     wxFLAGS_MEMBER(wxBORDER_DOUBLE)
 118     wxFLAGS_MEMBER(wxBORDER_RAISED)
 119     wxFLAGS_MEMBER(wxBORDER_STATIC)
 120     wxFLAGS_MEMBER(wxBORDER_NONE)
 121
 122     // old style border flags
 123     wxFLAGS_MEMBER(wxSIMPLE_BORDER)
 124     wxFLAGS_MEMBER(wxSUNKEN_BORDER)
 125     wxFLAGS_MEMBER(wxDOUBLE_BORDER)
 126     wxFLAGS_MEMBER(wxRAISED_BORDER)
 127     wxFLAGS_MEMBER(wxSTATIC_BORDER)
 128     wxFLAGS_MEMBER(wxBORDER)
 129
 130     // standard window styles
 131     wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
 132     wxFLAGS_MEMBER(wxCLIP_CHILDREN)
 133     wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
 134     wxFLAGS_MEMBER(wxWANTS_CHARS)
 135     wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
 136     wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
 137     wxFLAGS_MEMBER(wxVSCROLL)
 138     wxFLAGS_MEMBER(wxHSCROLL)
 139
 140     wxFLAGS_MEMBER(wxTE_PROCESS_ENTER)
 141     wxFLAGS_MEMBER(wxTE_PROCESS_TAB)
 142     wxFLAGS_MEMBER(wxTE_MULTILINE)
 143     wxFLAGS_MEMBER(wxTE_PASSWORD)
 144     wxFLAGS_MEMBER(wxTE_READONLY)
 145     wxFLAGS_MEMBER(wxHSCROLL)
 146     wxFLAGS_MEMBER(wxTE_RICH)
 147     wxFLAGS_MEMBER(wxTE_RICH2)
 148     wxFLAGS_MEMBER(wxTE_AUTO_URL)
 149     wxFLAGS_MEMBER(wxTE_NOHIDESEL)
 150     wxFLAGS_MEMBER(wxTE_LEFT)
 151     wxFLAGS_MEMBER(wxTE_CENTRE)
 152     wxFLAGS_MEMBER(wxTE_RIGHT)
 153     wxFLAGS_MEMBER(wxTE_DONTWRAP)
 154     wxFLAGS_MEMBER(wxTE_LINEWRAP)
 155     wxFLAGS_MEMBER(wxTE_WORDWRAP)
 156
 157 wxEND_FLAGS( wxTextCtrlStyle )
 158
 159 IMPLEMENT_DYNAMIC_CLASS_XTI(wxTextCtrl, wxControl,"wx/textctrl.h")
 160
 161 wxBEGIN_PROPERTIES_TABLE(wxTextCtrl)
 162     wxEVENT_PROPERTY( TextUpdated , wxEVT_COMMAND_TEXT_UPDATED , wxCommandEvent )
 163     wxEVENT_PROPERTY( TextEnter , wxEVT_COMMAND_TEXT_ENTER , wxCommandEvent )
 164
 165     wxPROPERTY( Font , wxFont , SetFont , GetFont  ,, 0 /*flags*/ , wxT("Helpstring") , wxT("group") )
 166         wxPROPERTY( Value , wxString , SetValue, GetValue, wxString() , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
 167     wxPROPERTY_FLAGS( WindowStyle , wxTextCtrlStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
 168 wxEND_PROPERTIES_TABLE()
 169
 170 wxBEGIN_HANDLERS_TABLE(wxTextCtrl)
 171 wxEND_HANDLERS_TABLE()
 172
 173 wxCONSTRUCTOR_6( wxTextCtrl , wxWindow* , Parent , wxWindowID , Id , wxString , Value , wxPoint , Position , wxSize , Size , long , WindowStyle)
 174 #else
 175 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxControl)
 176 #endif
 177
 178
 179 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
 180     EVT_CHAR(wxTextCtrl::OnChar)
 181     EVT_DROP_FILES(wxTextCtrl::OnDropFiles)
 182
 183 #if wxUSE_RICHEDIT
 184     EVT_RIGHT_UP(wxTextCtrl::OnRightClick)
 185 #endif
 186
 187     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 188     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 189     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 190     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 191     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 192     EVT_MENU(wxID_CLEAR, wxTextCtrl::OnDelete)
 193     EVT_MENU(wxID_SELECTALL, wxTextCtrl::OnSelectAll)
 194
 195     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 196     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 197     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 198     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 199     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 200     EVT_UPDATE_UI(wxID_CLEAR, wxTextCtrl::OnUpdateDelete)
 201     EVT_UPDATE_UI(wxID_SELECTALL, wxTextCtrl::OnUpdateSelectAll)
 202 #ifdef __WIN16__
 203     EVT_ERASE_BACKGROUND(wxTextCtrl::OnEraseBackground)
 204 #endif
 205
 206     EVT_SET_FOCUS(wxTextCtrl::OnSetFocus)
 207 END_EVENT_TABLE()
 208
 209 // ============================================================================
 210 // implementation
 211 // ============================================================================
 212
 213 // ----------------------------------------------------------------------------
 214 // creation
 215 // ----------------------------------------------------------------------------
 216
 217 void wxTextCtrl::Init()
 218 {
 219 #if wxUSE_RICHEDIT
 220     m_verRichEdit = 0;
 221 #endif // wxUSE_RICHEDIT
 222
 223     m_privateContextMenu = NULL;
 224     m_suppressNextUpdate = FALSE;
 225     m_isNativeCaretShown = true;
 226 }
 227
 228 wxTextCtrl::~wxTextCtrl()
 229 {
 230     if (m_privateContextMenu)
 231     {
 232         delete m_privateContextMenu;
 233         m_privateContextMenu = NULL;
 234     }
 235 }
 236
 237 bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id,
 238                         const wxString& value,
 239                         const wxPoint& pos,
 240                         const wxSize& size,
 241                         long style,
 242                         const wxValidator& validator,
 243                         const wxString& name)
 244 {
 245     // base initialization
 246     if ( !CreateBase(parent, id, pos, size, style, validator, name) )
 247         return FALSE;
 248
 249     if ( parent )
 250         parent->AddChild(this);
 251
 252     // translate wxWin style flags to MSW ones
 253     WXDWORD msStyle = MSWGetCreateWindowFlags();
 254
 255     // do create the control - either an EDIT or RICHEDIT
 256     wxString windowClass = wxT("EDIT");
 257
 258 #if wxUSE_RICHEDIT
 259     if ( m_windowStyle & wxTE_AUTO_URL )
 260     {
 261         // automatic URL detection only works in RichEdit 2.0+
 262         m_windowStyle |= wxTE_RICH2;
 263     }
 264
 265     if ( m_windowStyle & wxTE_RICH2 )
 266     {
 267         // using richedit 2.0 implies using wxTE_RICH
 268         m_windowStyle |= wxTE_RICH;
 269     }
 270
 271     // we need to load the richedit DLL before creating the rich edit control
 272     if ( m_windowStyle & wxTE_RICH )
 273     {
 274         static bool s_errorGiven = FALSE;// MT-FIXME
 275
 276         // Which version do we need? Use 1.0 by default because it is much more
 277         // like the the standard EDIT or 2.0 if explicitly requested, but use
 278         // only 2.0 in Unicode mode as 1.0 doesn't support Unicode at all
 279         //
 280         // TODO: RichEdit 3.0 is apparently capable of emulating RichEdit 1.0
 281         //       (and thus EDIT) much better than RichEdit 2.0 so we probably
 282         //       should use 3.0 if available as it is the best of both worlds -
 283         //       but as I can't test it right now I don't do it (VZ)
 284 #if wxUSE_UNICODE
 285         const int verRichEdit = 2;
 286 #else // !wxUSE_UNICODE
 287         int verRichEdit = m_windowStyle & wxTE_RICH2 ? 2 : 1;
 288 #endif // wxUSE_UNICODE/!wxUSE_UNICODE
 289
 290         // only give the error msg once if the DLL can't be loaded
 291         if ( !s_errorGiven )
 292         {
 293             // try to load the RichEdit DLL (will do nothing if already done)
 294             if ( !wxRichEditModule::Load(verRichEdit) )
 295             {
 296 #if !wxUSE_UNICODE
 297                 // try another version?
 298                 verRichEdit = 3 - verRichEdit; // 1 <-> 2
 299
 300                 if ( !wxRichEditModule::Load(verRichEdit) )
 301 #endif // wxUSE_UNICODE
 302                 {
 303                     wxLogError(_("Impossible to create a rich edit control, using simple text control instead. Please reinstall riched32.dll"));
 304
 305                     s_errorGiven = TRUE;
 306                 }
 307             }
 308         }
 309
 310         // have we managed to load any richedit version?
 311         if ( !s_errorGiven )
 312         {
 313             m_verRichEdit = verRichEdit;
 314             if ( m_verRichEdit == 1 )
 315             {
 316                 windowClass = wxT("RICHEDIT");
 317             }
 318             else
 319             {
 320 #ifndef RICHEDIT_CLASS
 321                 wxString RICHEDIT_CLASS;
 322                 RICHEDIT_CLASS.Printf(_T("RichEdit%d0"), m_verRichEdit);
 323 #if wxUSE_UNICODE
 324                 RICHEDIT_CLASS += _T('W');
 325 #else // ANSI
 326                 RICHEDIT_CLASS += _T('A');
 327 #endif // Unicode/ANSI
 328 #endif // !RICHEDIT_CLASS
 329
 330                 windowClass = RICHEDIT_CLASS;
 331             }
 332         }
 333     }
 334 #endif // wxUSE_RICHEDIT
 335
 336     // we need to turn '\n's into "\r\n"s for the multiline controls
 337     wxString valueWin;
 338     if ( m_windowStyle & wxTE_MULTILINE )
 339     {
 340         valueWin = wxTextFile::Translate(value, wxTextFileType_Dos);
 341     }
 342     else // single line
 343     {
 344         valueWin = value;
 345     }
 346
 347     if ( !MSWCreateControl(windowClass, msStyle, pos, size, valueWin) )
 348         return FALSE;
 349
 350     SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
 351
 352 #if wxUSE_RICHEDIT
 353     if ( IsRich() )
 354     {
 355         // enable the events we're interested in: we want to get EN_CHANGE as
 356         // for the normal controls
 357         LPARAM mask = ENM_CHANGE;
 358
 359         if ( GetRichVersion() == 1 )
 360         {
 361             // we also need EN_MSGFILTER for richedit 1.0 for the reasons
 362             // explained in its handler
 363            mask |= ENM_MOUSEEVENTS;
 364         }
 365         else if ( m_windowStyle & wxTE_AUTO_URL )
 366         {
 367             mask |= ENM_LINK;
 368
 369             ::SendMessage(GetHwnd(), EM_AUTOURLDETECT, TRUE, 0);
 370         }
 371
 372         ::SendMessage(GetHwnd(), EM_SETEVENTMASK, 0, mask);
 373     }
 374 #endif // wxUSE_RICHEDIT
 375
 376     return TRUE;
 377 }
 378
 379 // Make sure the window style (etc.) reflects the HWND style (roughly)
 380 void wxTextCtrl::AdoptAttributesFromHWND()
 381 {
 382     wxWindow::AdoptAttributesFromHWND();
 383
 384     HWND hWnd = GetHwnd();
 385     long style = ::GetWindowLong(hWnd, GWL_STYLE);
 386
 387     // retrieve the style to see whether this is an edit or richedit ctrl
 388 #if wxUSE_RICHEDIT
 389     wxString classname = wxGetWindowClass(GetHWND());
 390
 391     if ( classname.IsSameAs(_T("EDIT"), FALSE /* no case */) )
 392     {
 393         m_verRichEdit = 0;
 394     }
 395     else // rich edit?
 396     {
 397         wxChar c;
 398         if ( wxSscanf(classname, _T("RichEdit%d0%c"), &m_verRichEdit, &c) != 2 )
 399         {
 400             wxLogDebug(_T("Unknown edit control '%s'."), classname.c_str());
 401
 402             m_verRichEdit = 0;
 403         }
 404     }
 405 #endif // wxUSE_RICHEDIT
 406
 407     if (style & ES_MULTILINE)
 408         m_windowStyle |= wxTE_MULTILINE;
 409     if (style & ES_PASSWORD)
 410         m_windowStyle |= wxTE_PASSWORD;
 411     if (style & ES_READONLY)
 412         m_windowStyle |= wxTE_READONLY;
 413     if (style & ES_WANTRETURN)
 414         m_windowStyle |= wxTE_PROCESS_ENTER;
 415     if (style & ES_CENTER)
 416         m_windowStyle |= wxTE_CENTRE;
 417     if (style & ES_RIGHT)
 418         m_windowStyle |= wxTE_RIGHT;
 419 }
 420
 421 WXDWORD wxTextCtrl::MSWGetStyle(long style, WXDWORD *exstyle) const
 422 {
 423     long msStyle = wxControl::MSWGetStyle(style, exstyle);
 424
 425     // styles which we alaways add by default
 426     if ( style & wxTE_MULTILINE )
 427     {
 428         wxASSERT_MSG( !(style & wxTE_PROCESS_ENTER),
 429                       wxT("wxTE_PROCESS_ENTER style is ignored for multiline text controls (they always process it)") );
 430
 431         msStyle |= ES_MULTILINE | ES_WANTRETURN;
 432         if ( !(style & wxTE_NO_VSCROLL) )
 433         {
 434             // always adjust the vertical scrollbar automatically if we have it
 435             msStyle |= WS_VSCROLL | ES_AUTOVSCROLL;
 436
 437 #if wxUSE_RICHEDIT
 438             // we have to use this style for the rich edit controls because
 439             // without it the vertical scrollbar never appears at all in
 440             // richedit 3.0 because of our ECO_NOHIDESEL hack (search for it)
 441             if ( style & wxTE_RICH2 )
 442             {
 443                 msStyle |= ES_DISABLENOSCROLL;
 444             }
 445 #endif // wxUSE_RICHEDIT
 446         }
 447
 448         style |= wxTE_PROCESS_ENTER;
 449     }
 450     else // !multiline
 451     {
 452         // there is really no reason to not have this style for single line
 453         // text controls
 454         msStyle |= ES_AUTOHSCROLL;
 455     }
 456
 457     // note that wxTE_DONTWRAP is the same as wxHSCROLL so if we have a horz
 458     // scrollbar, there is no wrapping -- which makes sense
 459     if ( style & wxTE_DONTWRAP )
 460     {
 461         // automatically scroll the control horizontally as necessary
 462         msStyle |= WS_HSCROLL;
 463     }
 464
 465     if ( style & wxTE_READONLY )
 466         msStyle |= ES_READONLY;
 467
 468     if ( style & wxTE_PASSWORD )
 469         msStyle |= ES_PASSWORD;
 470
 471     if ( style & wxTE_NOHIDESEL )
 472         msStyle |= ES_NOHIDESEL;
 473
 474     // note that we can't do do "& wxTE_LEFT" as wxTE_LEFT == 0
 475     if ( style & wxTE_CENTRE )
 476         msStyle |= ES_CENTER;
 477     else if ( style & wxTE_RIGHT )
 478         msStyle |= ES_RIGHT;
 479     else
 480         msStyle |= ES_LEFT; // ES_LEFT is 0 as well but for consistency...
 481
 482     return msStyle;
 483 }
 484
 485 void wxTextCtrl::SetWindowStyleFlag(long style)
 486 {
 487 #if wxUSE_RICHEDIT
 488     // we have to deal with some styles separately because they can't be
 489     // changed by simply calling SetWindowLong(GWL_STYLE) but can be changed
 490     // using richedit-specific EM_SETOPTIONS
 491     if ( IsRich() &&
 492             ((style & wxTE_NOHIDESEL) != (GetWindowStyle() & wxTE_NOHIDESEL)) )
 493     {
 494         bool set = (style & wxTE_NOHIDESEL) != 0;
 495
 496         ::SendMessage(GetHwnd(), EM_SETOPTIONS, set ? ECOOP_OR : ECOOP_AND,
 497                       set ? ECO_NOHIDESEL : ~ECO_NOHIDESEL);
 498     }
 499 #endif // wxUSE_RICHEDIT
 500
 501     wxControl::SetWindowStyleFlag(style);
 502 }
 503
 504 // ----------------------------------------------------------------------------
 505 // set/get the controls text
 506 // ----------------------------------------------------------------------------
 507
 508 wxString wxTextCtrl::GetValue() const
 509 {
 510     // range 0..-1 is special for GetRange() and means to retrieve all text
 511     return GetRange(0, -1);
 512 }
 513
 514 wxString wxTextCtrl::GetRange(long from, long to) const
 515 {
 516     wxString str;
 517
 518     if ( from >= to && to != -1 )
 519     {
 520         // nothing to retrieve
 521         return str;
 522     }
 523
 524 #if wxUSE_RICHEDIT
 525     if ( IsRich() )
 526     {
 527         int len = GetWindowTextLength(GetHwnd());
 528         if ( len > from )
 529         {
 530             if ( to == -1 )
 531                 to = len;
 532
 533 #if !wxUSE_UNICODE
 534             // we must use EM_STREAMOUT if we don't want to lose all characters
 535             // not representable in the current character set (EM_GETTEXTRANGE
 536             // simply replaces them with question marks...)
 537             //
 538             // as EM_STREAMOUT only works for the entire controls contents (or
 539             // just the selection but it's probably a bad idea to play games
 540             // with selection here...), we can't use it unless we're called
 541             // from GetValue(), i.e. we want to retrieve all text
 542             if ( GetRichVersion() > 1 && (from == 0 && to >= len) )
 543             {
 544                 wxFont font = m_defaultStyle.GetFont();
 545                 if ( !font.Ok() )
 546                     font = GetFont();
 547
 548                 if ( font.Ok() )
 549                 {
 550                    wxFontEncoding encoding = font.GetEncoding();
 551                    if ( encoding != wxFONTENCODING_SYSTEM )
 552                    {
 553                        str = StreamOut(encoding);
 554                    }
 555                 }
 556             }
 557
 558             // StreamOut() wasn't used or failed, try to do it in normal way
 559             if ( str.empty() )
 560 #endif // !wxUSE_UNICODE
 561             {
 562                 // alloc one extra WORD as needed by the control
 563                 wxStringBuffer tmp(str, ++len);
 564                 wxChar *p = tmp;
 565
 566                 TEXTRANGE textRange;
 567                 textRange.chrg.cpMin = from;
 568                 textRange.chrg.cpMax = to;
 569                 textRange.lpstrText = p;
 570
 571                 (void)SendMessage(GetHwnd(), EM_GETTEXTRANGE,
 572                                   0, (LPARAM)&textRange);
 573
 574                 if ( m_verRichEdit > 1 )
 575                 {
 576                     // RichEdit 2.0 uses just CR ('\r') for the
 577                     // newlines which is neither Unix nor Windows
 578                     // style - convert it to something reasonable
 579                     for ( ; *p; p++ )
 580                     {
 581                         if ( *p == _T('\r') )
 582                             *p = _T('\n');
 583                     }
 584                 }
 585             }
 586
 587             if ( m_verRichEdit == 1 )
 588             {
 589                 // convert to the canonical form - see comment below
 590                 str = wxTextFile::Translate(str, wxTextFileType_Unix);
 591             }
 592         }
 593         //else: no text at all, leave the string empty
 594     }
 595     else
 596 #endif // wxUSE_RICHEDIT
 597     {
 598         // retrieve all text
 599         str = wxGetWindowText(GetHWND());
 600
 601         // need only a range?
 602         if ( from < to )
 603         {
 604             str = str.Mid(from, to - from);
 605         }
 606
 607         // WM_GETTEXT uses standard DOS CR+LF (\r\n) convention - convert to the
 608         // canonical one (same one as above) for consistency with the other kinds
 609         // of controls and, more importantly, with the other ports
 610         str = wxTextFile::Translate(str, wxTextFileType_Unix);
 611     }
 612
 613     return str;
 614 }
 615
 616 void wxTextCtrl::SetValue(const wxString& value)
 617 {
 618     // if the text is long enough, it's faster to just set it instead of first
 619     // comparing it with the old one (chances are that it will be different
 620     // anyhow, this comparison is there to avoid flicker for small single-line
 621     // edit controls mostly)
 622     if ( (value.length() > 0x400) || (value != GetValue()) )
 623     {
 624         DoWriteText(value, FALSE /* not selection only */);
 625     }
 626     else // same text
 627     {
 628         // still send an event for consistency
 629         SendUpdateEvent();
 630     }
 631
 632     // we should reset the modified flag even if the value didn't really change
 633
 634     // mark the control as being not dirty - we changed its text, not the
 635     // user
 636     DiscardEdits();
 637
 638     // for compatibility, don't move the cursor when doing SetValue()
 639     SetInsertionPoint(0);
 640 }
 641
 642 #if wxUSE_RICHEDIT && (!wxUSE_UNICODE || wxUSE_UNICODE_MSLU)
 643
 644 // TODO: using memcpy() would improve performance a lot for big amounts of text
 645
 646 DWORD CALLBACK
 647 wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb)
 648 {
 649     *pcb = 0;
 650
 651     const wchar_t ** const ppws = (const wchar_t **)dwCookie;
 652
 653     wchar_t *wbuf = (wchar_t *)buf;
 654     const wchar_t *wpc = *ppws;
 655     while ( cb && *wpc )
 656     {
 657         *wbuf++ = *wpc++;
 658
 659         cb -= sizeof(wchar_t);
 660         (*pcb) += sizeof(wchar_t);
 661     }
 662
 663     *ppws = wpc;
 664
 665     return 0;
 666 }
 667
 668 DWORD CALLBACK
 669 wxRichEditStreamOut(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb)
 670 {
 671     *pcb = 0;
 672
 673     wchar_t ** const ppws = (wchar_t **)dwCookie;
 674
 675     const wchar_t *wbuf = (const wchar_t *)buf;
 676     wchar_t *wpc = *ppws;
 677     while ( cb && *wpc )
 678     {
 679          *wpc++ = *wbuf++;
 680
 681         cb -= sizeof(wchar_t);
 682         (*pcb) += sizeof(wchar_t);
 683     }
 684
 685     *ppws = wpc;
 686
 687     return 0;
 688 }
 689
 690
 691 #if wxUSE_UNICODE_MSLU
 692     #define UNUSED_IF_MSLU(param)
 693 #else
 694     #define UNUSED_IF_MSLU(param) param
 695 #endif
 696
 697 bool
 698 wxTextCtrl::StreamIn(const wxString& value,
 699                      wxFontEncoding UNUSED_IF_MSLU(encoding),
 700                      bool selectionOnly)
 701 {
 702 #if wxUSE_UNICODE_MSLU
 703     const wchar_t *wpc = value.c_str();
 704 #else // !wxUSE_UNICODE_MSLU
 705     wxCSConv conv(encoding);
 706
 707     const size_t len = conv.MB2WC(NULL, value, value.length());
 708
 709 #if wxUSE_WCHAR_T
 710     wxWCharBuffer wchBuf(len);
 711     wchar_t *wpc = wchBuf.data();
 712 #else
 713     wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
 714     wchar_t *wpc = wchBuf;
 715 #endif
 716
 717     conv.MB2WC(wpc, value, value.length());
 718 #endif // wxUSE_UNICODE_MSLU
 719
 720     // finally, stream it in the control
 721     EDITSTREAM eds;
 722     wxZeroMemory(eds);
 723     eds.dwCookie = (DWORD)&wpc;
 724     // the cast below is needed for broken (very) old mingw32 headers
 725     eds.pfnCallback = (EDITSTREAMCALLBACK)wxRichEditStreamIn;
 726
 727     // we're going to receive 2 EN_CHANGE notifications if we got any selection
 728     // (same problem as in DoWriteText())
 729     if ( selectionOnly && HasSelection() )
 730     {
 731         // so suppress one of them
 732         m_suppressNextUpdate = TRUE;
 733     }
 734
 735     ::SendMessage(GetHwnd(), EM_STREAMIN,
 736                   SF_TEXT |
 737                   SF_UNICODE |
 738                   (selectionOnly ? SFF_SELECTION : 0),
 739                   (LPARAM)&eds);
 740
 741     if ( eds.dwError )
 742     {
 743         wxLogLastError(_T("EM_STREAMIN"));
 744     }
 745
 746 #if !wxUSE_WCHAR_T
 747     free(wchBuf);
 748 #endif // !wxUSE_WCHAR_T
 749
 750     return TRUE;
 751 }
 752
 753 #if !wxUSE_UNICODE_MSLU
 754
 755 wxString
 756 wxTextCtrl::StreamOut(wxFontEncoding encoding, bool selectionOnly) const
 757 {
 758     wxString out;
 759
 760     const int len = GetWindowTextLength(GetHwnd());
 761
 762 #if wxUSE_WCHAR_T
 763     wxWCharBuffer wchBuf(len);
 764     wchar_t *wpc = wchBuf.data();
 765 #else
 766     wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
 767     wchar_t *wpc = wchBuf;
 768 #endif
 769
 770     EDITSTREAM eds;
 771     wxZeroMemory(eds);
 772     eds.dwCookie = (DWORD)&wpc;
 773     eds.pfnCallback = wxRichEditStreamOut;
 774
 775     ::SendMessage
 776       (
 777         GetHwnd(),
 778         EM_STREAMOUT,
 779         SF_TEXT | SF_UNICODE | (selectionOnly ? SFF_SELECTION : 0),
 780         (LPARAM)&eds
 781       );
 782
 783     if ( eds.dwError )
 784     {
 785         wxLogLastError(_T("EM_STREAMOUT"));
 786     }
 787     else // streamed out ok
 788     {
 789         // now convert to the given encoding (this is a lossful conversion but
 790         // what else can we do)
 791         wxCSConv conv(encoding);
 792         size_t lenNeeded = conv.WC2MB(NULL, wchBuf, len);
 793         if ( lenNeeded )
 794         {
 795             conv.WC2MB(wxStringBuffer(out, lenNeeded), wchBuf, len);
 796         }
 797     }
 798
 799 #if !wxUSE_WCHAR_T
 800     free(wchBuf);
 801 #endif // !wxUSE_WCHAR_T
 802
 803     return out;
 804 }
 805
 806 #endif // !wxUSE_UNICODE_MSLU
 807
 808 #endif // wxUSE_RICHEDIT
 809
 810 void wxTextCtrl::WriteText(const wxString& value)
 811 {
 812     DoWriteText(value);
 813 }
 814
 815 void wxTextCtrl::DoWriteText(const wxString& value, bool selectionOnly)
 816 {
 817     wxString valueDos;
 818     if ( m_windowStyle & wxTE_MULTILINE )
 819         valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
 820     else
 821         valueDos = value;
 822
 823 #if wxUSE_RICHEDIT
 824     // there are several complications with the rich edit controls here
 825     bool done = FALSE;
 826     if ( IsRich() )
 827     {
 828         // first, ensure that the new text will be in the default style
 829         if ( !m_defaultStyle.IsDefault() )
 830         {
 831             long start, end;
 832             GetSelection(&start, &end);
 833             SetStyle(start, end, m_defaultStyle);
 834         }
 835
 836 #if wxUSE_UNICODE_MSLU
 837         // RichEdit doesn't have Unicode version of EM_REPLACESEL on Win9x,
 838         // but EM_STREAMIN works
 839         if ( wxUsingUnicowsDll() && GetRichVersion() > 1 )
 840         {
 841            done = StreamIn(valueDos, wxFONTENCODING_SYSTEM, selectionOnly);
 842         }
 843 #endif // wxUSE_UNICODE_MSLU
 844
 845 #if !wxUSE_UNICODE
 846         // next check if the text we're inserting must be shown in a non
 847         // default charset -- this only works for RichEdit > 1.0
 848         if ( GetRichVersion() > 1 )
 849         {
 850             wxFont font = m_defaultStyle.GetFont();
 851             if ( !font.Ok() )
 852                 font = GetFont();
 853
 854             if ( font.Ok() )
 855             {
 856                wxFontEncoding encoding = font.GetEncoding();
 857                if ( encoding != wxFONTENCODING_SYSTEM )
 858                {
 859                    // we have to use EM_STREAMIN to force richedit control 2.0+
 860                    // to show any text in the non default charset -- otherwise
 861                    // it thinks it knows better than we do and always shows it
 862                    // in the default one
 863                    done = StreamIn(valueDos, encoding, selectionOnly);
 864                }
 865             }
 866         }
 867 #endif // !wxUSE_UNICODE
 868     }
 869
 870     if ( !done )
 871 #endif // wxUSE_RICHEDIT
 872     {
 873         // in some cases we get 2 EN_CHANGE notifications after the SendMessage
 874         // call below which is confusing for the client code and so should be
 875         // avoided
 876         //
 877         // these cases are: (a) plain EDIT controls if EM_REPLACESEL is used
 878         // and there is a non empty selection currently and (b) rich text
 879         // controls in any case
 880         if (
 881 #if wxUSE_RICHEDIT
 882             IsRich() ||
 883 #endif // wxUSE_RICHEDIT
 884             (selectionOnly && HasSelection()) )
 885         {
 886             m_suppressNextUpdate = TRUE;
 887         }
 888
 889         ::SendMessage(GetHwnd(), selectionOnly ? EM_REPLACESEL : WM_SETTEXT,
 890                       0, (LPARAM)valueDos.c_str());
 891
 892         // OTOH, non rich text controls don't generate any events at all when
 893         // we use WM_SETTEXT -- have to emulate them here
 894         if ( !selectionOnly
 895 #if wxUSE_RICHEDIT
 896                 && !IsRich()
 897 #endif // wxUSE_RICHEDIT
 898            )
 899         {
 900             // Windows already sends an update event for single-line
 901             // controls.
 902             if ( m_windowStyle & wxTE_MULTILINE )
 903                 SendUpdateEvent();
 904         }
 905     }
 906
 907     AdjustSpaceLimit();
 908 }
 909
 910 void wxTextCtrl::AppendText(const wxString& text)
 911 {
 912     SetInsertionPointEnd();
 913
 914     WriteText(text);
 915
 916 #if wxUSE_RICHEDIT
 917     if ( IsMultiLine() && GetRichVersion() > 1 )
 918     {
 919         // setting the caret to the end and showing it simply doesn't work for
 920         // RichEdit 2.0 -- force it to still do what we want
 921         ::SendMessage(GetHwnd(), EM_LINESCROLL, 0, GetNumberOfLines());
 922     }
 923 #endif // wxUSE_RICHEDIT
 924 }
 925
 926 void wxTextCtrl::Clear()
 927 {
 928     ::SetWindowText(GetHwnd(), wxEmptyString);
 929
 930 #if wxUSE_RICHEDIT
 931     if ( !IsRich() )
 932 #endif // wxUSE_RICHEDIT
 933     {
 934         // rich edit controls send EN_UPDATE from WM_SETTEXT handler themselves
 935         // but the normal ones don't -- make Clear() behaviour consistent by
 936         // always sending this event
 937
 938         // Windows already sends an update event for single-line
 939         // controls.
 940         if ( m_windowStyle & wxTE_MULTILINE )
 941             SendUpdateEvent();
 942     }
 943 }
 944
 945 #ifdef __WIN32__
 946
 947 bool wxTextCtrl::EmulateKeyPress(const wxKeyEvent& event)
 948 {
 949     SetFocus();
 950
 951     size_t lenOld = GetValue().length();
 952
 953     wxUint32 code = event.GetRawKeyCode();
 954     ::keybd_event(code, 0, 0 /* key press */, 0);
 955     ::keybd_event(code, 0, KEYEVENTF_KEYUP, 0);
 956
 957     // assume that any alphanumeric key changes the total number of characters
 958     // in the control - this should work in 99% of cases
 959     return GetValue().length() != lenOld;
 960 }
 961
 962 #endif // __WIN32__
 963
 964 // ----------------------------------------------------------------------------
 965 // Clipboard operations
 966 // ----------------------------------------------------------------------------
 967
 968 void wxTextCtrl::Copy()
 969 {
 970     if (CanCopy())
 971     {
 972         ::SendMessage(GetHwnd(), WM_COPY, 0, 0L);
 973     }
 974 }
 975
 976 void wxTextCtrl::Cut()
 977 {
 978     if (CanCut())
 979     {
 980         ::SendMessage(GetHwnd(), WM_CUT, 0, 0L);
 981     }
 982 }
 983
 984 void wxTextCtrl::Paste()
 985 {
 986     if (CanPaste())
 987     {
 988         ::SendMessage(GetHwnd(), WM_PASTE, 0, 0L);
 989     }
 990 }
 991
 992 bool wxTextCtrl::HasSelection() const
 993 {
 994     long from, to;
 995     GetSelection(&from, &to);
 996     return from != to;
 997 }
 998
 999 bool wxTextCtrl::CanCopy() const
1000 {
1001     // Can copy if there's a selection
1002     return HasSelection();
1003 }
1004
1005 bool wxTextCtrl::CanCut() const
1006 {
1007     return CanCopy() && IsEditable();
1008 }
1009
1010 bool wxTextCtrl::CanPaste() const
1011 {
1012     if ( !IsEditable() )
1013         return FALSE;
1014
1015 #if wxUSE_RICHEDIT
1016     if ( IsRich() )
1017     {
1018         UINT cf = 0; // 0 == any format
1019
1020         return ::SendMessage(GetHwnd(), EM_CANPASTE, cf, 0) != 0;
1021     }
1022 #endif // wxUSE_RICHEDIT
1023
1024     // Standard edit control: check for straight text on clipboard
1025     if ( !::OpenClipboard(GetHwndOf(wxTheApp->GetTopWindow())) )
1026         return FALSE;
1027
1028     bool isTextAvailable = ::IsClipboardFormatAvailable(CF_TEXT) != 0;
1029     ::CloseClipboard();
1030
1031     return isTextAvailable;
1032 }
1033
1034 // ----------------------------------------------------------------------------
1035 // Accessors
1036 // ----------------------------------------------------------------------------
1037
1038 void wxTextCtrl::SetEditable(bool editable)
1039 {
1040     HWND hWnd = GetHwnd();
1041     SendMessage(hWnd, EM_SETREADONLY, (WPARAM)!editable, (LPARAM)0L);
1042 }
1043
1044 void wxTextCtrl::SetInsertionPoint(long pos)
1045 {
1046     DoSetSelection(pos, pos);
1047 }
1048
1049 void wxTextCtrl::SetInsertionPointEnd()
1050 {
1051     // we must not do anything if the caret is already there because calling
1052     // SetInsertionPoint() thaws the controls if Freeze() had been called even
1053     // if it doesn't actually move the caret anywhere and so the simple fact of
1054     // doing it results in horrible flicker when appending big amounts of text
1055     // to the control in a few chunks (see DoAddText() test in the text sample)
1056     if ( GetInsertionPoint() == GetLastPosition() )
1057         return;
1058
1059     long pos;
1060
1061 #if wxUSE_RICHEDIT
1062     if ( m_verRichEdit == 1 )
1063     {
1064         // we don't have to waste time calling GetLastPosition() in this case
1065         pos = -1;
1066     }
1067     else // !RichEdit 1.0
1068 #endif // wxUSE_RICHEDIT
1069     {
1070         pos = GetLastPosition();
1071     }
1072
1073     SetInsertionPoint(pos);
1074 }
1075
1076 long wxTextCtrl::GetInsertionPoint() const
1077 {
1078 #if wxUSE_RICHEDIT
1079     if ( IsRich() )
1080     {
1081         CHARRANGE range;
1082         range.cpMin = 0;
1083         range.cpMax = 0;
1084         SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
1085         return range.cpMin;
1086     }
1087 #endif // wxUSE_RICHEDIT
1088
1089     DWORD Pos = (DWORD)SendMessage(GetHwnd(), EM_GETSEL, 0, 0L);
1090     return Pos & 0xFFFF;
1091 }
1092
1093 long wxTextCtrl::GetLastPosition() const
1094 {
1095     int numLines = GetNumberOfLines();
1096     long posStartLastLine = XYToPosition(0, numLines - 1);
1097
1098     long lenLastLine = GetLengthOfLineContainingPos(posStartLastLine);
1099
1100     return posStartLastLine + lenLastLine;
1101 }
1102
1103 // If the return values from and to are the same, there is no
1104 // selection.
1105 void wxTextCtrl::GetSelection(long* from, long* to) const
1106 {
1107 #if wxUSE_RICHEDIT
1108     if ( IsRich() )
1109     {
1110         CHARRANGE charRange;
1111         ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &charRange);
1112
1113         *from = charRange.cpMin;
1114         *to = charRange.cpMax;
1115     }
1116     else
1117 #endif // !wxUSE_RICHEDIT
1118     {
1119         DWORD dwStart, dwEnd;
1120         ::SendMessage(GetHwnd(), EM_GETSEL, (WPARAM)&dwStart, (LPARAM)&dwEnd);
1121
1122         *from = dwStart;
1123         *to = dwEnd;
1124     }
1125 }
1126
1127 bool wxTextCtrl::IsEditable() const
1128 {
1129     // strangely enough, we may be called before the control is created: our
1130     // own Create() calls MSWGetStyle() which calls AcceptsFocus() which calls
1131     // us
1132     if ( !m_hWnd )
1133         return TRUE;
1134
1135     long style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1136
1137     return (style & ES_READONLY) == 0;
1138 }
1139
1140 // ----------------------------------------------------------------------------
1141 // selection
1142 // ----------------------------------------------------------------------------
1143
1144 void wxTextCtrl::SetSelection(long from, long to)
1145 {
1146     // if from and to are both -1, it means (in wxWindows) that all text should
1147     // be selected - translate into Windows convention
1148     if ( (from == -1) && (to == -1) )
1149     {
1150         from = 0;
1151         to = -1;
1152     }
1153
1154     DoSetSelection(from, to);
1155 }
1156
1157 void wxTextCtrl::DoSetSelection(long from, long to, bool scrollCaret)
1158 {
1159     HWND hWnd = GetHwnd();
1160
1161 #ifdef __WIN32__
1162 #if wxUSE_RICHEDIT
1163     if ( IsRich() )
1164     {
1165         CHARRANGE range;
1166         range.cpMin = from;
1167         range.cpMax = to;
1168         SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM) &range);
1169     }
1170     else
1171 #endif // wxUSE_RICHEDIT
1172     {
1173         SendMessage(hWnd, EM_SETSEL, (WPARAM)from, (LPARAM)to);
1174     }
1175
1176     if ( scrollCaret )
1177     {
1178 #if wxUSE_RICHEDIT
1179         // richedit 3.0 (i.e. the version living in riched20.dll distributed
1180         // with Windows 2000 and beyond) doesn't honour EM_SCROLLCARET when
1181         // emulating richedit 2.0 unless the control has focus or ECO_NOHIDESEL
1182         // option is set (but it does work ok in richedit 1.0 mode...)
1183         //
1184         // so to make it work we either need to give focus to it here which
1185         // will probably create many problems (dummy focus events; window
1186         // containing the text control being brought to foreground
1187         // unexpectedly; ...) or to temporarily set ECO_NOHIDESEL which may
1188         // create other problems too -- and in fact it does because if we turn
1189         // on/off this style while appending the text to the control, the
1190         // vertical scrollbar never appears in it even if we append tons of
1191         // text and to work around this the only solution I found was to use
1192         // ES_DISABLENOSCROLL
1193         //
1194         // this is very ugly but I don't see any other way to make this work
1195         if ( GetRichVersion() > 1 )
1196         {
1197             if ( !HasFlag(wxTE_NOHIDESEL) )
1198             {
1199                 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1200                               ECOOP_OR, ECO_NOHIDESEL);
1201             }
1202             //else: everything is already ok
1203         }
1204 #endif // wxUSE_RICHEDIT
1205
1206         SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
1207
1208 #if wxUSE_RICHEDIT
1209         // restore ECO_NOHIDESEL if we changed it
1210         if ( GetRichVersion() > 1 && !HasFlag(wxTE_NOHIDESEL) )
1211         {
1212             ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1213                           ECOOP_AND, ~ECO_NOHIDESEL);
1214         }
1215 #endif // wxUSE_RICHEDIT
1216     }
1217 #else // Win16
1218     // WPARAM is 0: selection is scrolled into view
1219     SendMessage(hWnd, EM_SETSEL, (WPARAM)0, (LPARAM)MAKELONG(from, to));
1220 #endif // Win32/16
1221 }
1222
1223 // ----------------------------------------------------------------------------
1224 // Editing
1225 // ----------------------------------------------------------------------------
1226
1227 void wxTextCtrl::Replace(long from, long to, const wxString& value)
1228 {
1229     // Set selection and remove it
1230     DoSetSelection(from, to, FALSE /* don't scroll caret into view */);
1231
1232     SendMessage(GetHwnd(), EM_REPLACESEL,
1233 #ifdef __WIN32__
1234                 TRUE,
1235 #else
1236                 FALSE,
1237 #endif
1238                 (LPARAM)value.c_str());
1239 }
1240
1241 void wxTextCtrl::Remove(long from, long to)
1242 {
1243     Replace(from, to, wxEmptyString);
1244 }
1245
1246 bool wxTextCtrl::LoadFile(const wxString& file)
1247 {
1248     if ( wxTextCtrlBase::LoadFile(file) )
1249     {
1250         // update the size limit if needed
1251         AdjustSpaceLimit();
1252
1253         return TRUE;
1254     }
1255
1256     return FALSE;
1257 }
1258
1259 bool wxTextCtrl::IsModified() const
1260 {
1261     return SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0;
1262 }
1263
1264 void wxTextCtrl::MarkDirty()
1265 {
1266     SendMessage(GetHwnd(), EM_SETMODIFY, TRUE, 0L);
1267 }
1268
1269 void wxTextCtrl::DiscardEdits()
1270 {
1271     SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0L);
1272 }
1273
1274 int wxTextCtrl::GetNumberOfLines() const
1275 {
1276     return (int)SendMessage(GetHwnd(), EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0);
1277 }
1278
1279 long wxTextCtrl::XYToPosition(long x, long y) const
1280 {
1281     // This gets the char index for the _beginning_ of this line
1282     long charIndex = SendMessage(GetHwnd(), EM_LINEINDEX, (WPARAM)y, (LPARAM)0);
1283
1284     return charIndex + x;
1285 }
1286
1287 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
1288 {
1289     HWND hWnd = GetHwnd();
1290
1291     // This gets the line number containing the character
1292     long lineNo;
1293 #if wxUSE_RICHEDIT
1294     if ( IsRich() )
1295     {
1296         lineNo = SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, (LPARAM)pos);
1297     }
1298     else
1299 #endif // wxUSE_RICHEDIT
1300     {
1301         lineNo = SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, 0);
1302     }
1303
1304     if ( lineNo == -1 )
1305     {
1306         // no such line
1307         return FALSE;
1308     }
1309
1310     // This gets the char index for the _beginning_ of this line
1311     long charIndex = SendMessage(hWnd, EM_LINEINDEX, (WPARAM)lineNo, (LPARAM)0);
1312     if ( charIndex == -1 )
1313     {
1314         return FALSE;
1315     }
1316
1317     // The X position must therefore be the different between pos and charIndex
1318     if ( x )
1319         *x = pos - charIndex;
1320     if ( y )
1321         *y = lineNo;
1322
1323     return TRUE;
1324 }
1325
1326 void wxTextCtrl::ShowPosition(long pos)
1327 {
1328     HWND hWnd = GetHwnd();
1329
1330     // To scroll to a position, we pass the number of lines and characters
1331     // to scroll *by*. This means that we need to:
1332     // (1) Find the line position of the current line.
1333     // (2) Find the line position of pos.
1334     // (3) Scroll by (pos - current).
1335     // For now, ignore the horizontal scrolling.
1336
1337     // Is this where scrolling is relative to - the line containing the caret?
1338     // Or is the first visible line??? Try first visible line.
1339 //    int currentLineLineNo1 = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)-1, (LPARAM)0L);
1340
1341     int currentLineLineNo = (int)SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, (WPARAM)0, (LPARAM)0L);
1342
1343     int specifiedLineLineNo = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, (LPARAM)0L);
1344
1345     int linesToScroll = specifiedLineLineNo - currentLineLineNo;
1346
1347     if (linesToScroll != 0)
1348       (void)SendMessage(hWnd, EM_LINESCROLL, (WPARAM)0, (LPARAM)linesToScroll);
1349 }
1350
1351 long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const
1352 {
1353     return ::SendMessage(GetHwnd(), EM_LINELENGTH, (WPARAM)pos, 0);
1354 }
1355
1356 int wxTextCtrl::GetLineLength(long lineNo) const
1357 {
1358     long pos = XYToPosition(0, lineNo);
1359
1360     return GetLengthOfLineContainingPos(pos);
1361 }
1362
1363 wxString wxTextCtrl::GetLineText(long lineNo) const
1364 {
1365     size_t len = (size_t)GetLineLength(lineNo) + 1;
1366
1367     // there must be at least enough place for the length WORD in the
1368     // buffer
1369     len += sizeof(WORD);
1370
1371     wxString str;
1372     {
1373         wxStringBufferLength tmp(str, len);
1374         wxChar *buf = tmp;
1375
1376         *(WORD *)buf = (WORD)len;
1377         len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf);
1378
1379 #if wxUSE_RICHEDIT
1380         if ( IsRich() )
1381         {
1382             // remove the '\r' returned by the rich edit control, the user code
1383             // should never see it
1384             if ( buf[len - 2] == _T('\r') && buf[len - 1] == _T('\n') )
1385             {
1386                 buf[len - 2] = _T('\n');
1387                 len--;
1388             }
1389         }
1390 #endif // wxUSE_RICHEDIT
1391
1392         // remove the '\n' at the end, if any (this is how this function is
1393         // supposed to work according to the docs)
1394         if ( buf[len - 1] == _T('\n') )
1395         {
1396             len--;
1397         }
1398
1399         buf[len] = 0;
1400         tmp.SetLength(len);
1401     }
1402
1403     return str;
1404 }
1405
1406 void wxTextCtrl::SetMaxLength(unsigned long len)
1407 {
1408     ::SendMessage(GetHwnd(), EM_LIMITTEXT, len, 0);
1409 }
1410
1411 // ----------------------------------------------------------------------------
1412 // Undo/redo
1413 // ----------------------------------------------------------------------------
1414
1415 void wxTextCtrl::Undo()
1416 {
1417     if (CanUndo())
1418     {
1419         ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1420     }
1421 }
1422
1423 void wxTextCtrl::Redo()
1424 {
1425     if (CanRedo())
1426     {
1427         // Same as Undo, since Undo undoes the undo, i.e. a redo.
1428         ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1429     }
1430 }
1431
1432 bool wxTextCtrl::CanUndo() const
1433 {
1434     return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1435 }
1436
1437 bool wxTextCtrl::CanRedo() const
1438 {
1439     return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1440 }
1441
1442 // ----------------------------------------------------------------------------
1443 // caret handling (Windows only)
1444 // ----------------------------------------------------------------------------
1445
1446 bool wxTextCtrl::ShowNativeCaret(bool show)
1447 {
1448     if ( show != m_isNativeCaretShown )
1449     {
1450         if ( !(show ? ::ShowCaret(GetHwnd()) : ::HideCaret(GetHwnd())) )
1451         {
1452             // not an error, may simply indicate that it's not shown/hidden
1453             // yet (i.e. it had been hidden/showh 2 times before)
1454             return false;
1455         }
1456
1457         m_isNativeCaretShown = show;
1458     }
1459
1460     return true;
1461 }
1462
1463 // ----------------------------------------------------------------------------
1464 // implemenation details
1465 // ----------------------------------------------------------------------------
1466
1467 void wxTextCtrl::Command(wxCommandEvent & event)
1468 {
1469     SetValue(event.GetString());
1470     ProcessCommand (event);
1471 }
1472
1473 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
1474 {
1475     // By default, load the first file into the text window.
1476     if (event.GetNumberOfFiles() > 0)
1477     {
1478         LoadFile(event.GetFiles()[0]);
1479     }
1480 }
1481
1482 // ----------------------------------------------------------------------------
1483 // kbd input processing
1484 // ----------------------------------------------------------------------------
1485
1486 bool wxTextCtrl::MSWShouldPreProcessMessage(WXMSG* pMsg)
1487 {
1488     MSG *msg = (MSG *)pMsg;
1489
1490     // check for our special keys here: if we don't do it and the parent frame
1491     // uses them as accelerators, they wouldn't work at all, so we disable
1492     // usual preprocessing for them
1493     if ( msg->message == WM_KEYDOWN )
1494     {
1495         WORD vkey = (WORD) msg->wParam;
1496         if ( (HIWORD(msg->lParam) & KF_ALTDOWN) == KF_ALTDOWN )
1497         {
1498             if ( vkey == VK_BACK )
1499                 return FALSE;
1500         }
1501         else // no Alt
1502         {
1503             // we want to process some Ctrl-foo and Shift-bar but no key
1504             // combinations without either Ctrl or Shift nor with both of them
1505             // pressed
1506             const int ctrl = wxIsCtrlDown(),
1507                       shift = wxIsShiftDown();
1508             switch ( ctrl + shift )
1509             {
1510                 default:
1511                     wxFAIL_MSG( _T("how many modifiers have we got?") );
1512                     // fall through
1513
1514                 case 0:
1515                 case 2:
1516                     break;
1517
1518                 case 1:
1519                     // either Ctrl or Shift pressed
1520                     if ( ctrl )
1521                     {
1522                         switch ( vkey )
1523                         {
1524                             case 'C':
1525                             case 'V':
1526                             case 'X':
1527                             case VK_INSERT:
1528                             case VK_DELETE:
1529                             case VK_HOME:
1530                             case VK_END:
1531                                 return FALSE;
1532                         }
1533                     }
1534                     else // Shift is pressed
1535                     {
1536                         if ( vkey == VK_INSERT || vkey == VK_DELETE )
1537                             return FALSE;
1538                     }
1539             }
1540         }
1541     }
1542
1543     return wxControl::MSWShouldPreProcessMessage(pMsg);
1544 }
1545
1546 void wxTextCtrl::OnChar(wxKeyEvent& event)
1547 {
1548     switch ( event.GetKeyCode() )
1549     {
1550         case WXK_RETURN:
1551             if ( !(m_windowStyle & wxTE_MULTILINE) )
1552             {
1553                 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1554                 InitCommandEvent(event);
1555                 event.SetString(GetValue());
1556                 if ( GetEventHandler()->ProcessEvent(event) )
1557                     return;
1558             }
1559             //else: multiline controls need Enter for themselves
1560
1561             break;
1562
1563         case WXK_TAB:
1564             // always produce navigation event - even if we process TAB
1565             // ourselves the fact that we got here means that the user code
1566             // decided to skip processing of this TAB - probably to let it
1567             // do its default job.
1568             {
1569                 wxNavigationKeyEvent eventNav;
1570                 eventNav.SetDirection(!event.ShiftDown());
1571                 eventNav.SetWindowChange(event.ControlDown());
1572                 eventNav.SetEventObject(this);
1573
1574                 if ( GetParent()->GetEventHandler()->ProcessEvent(eventNav) )
1575                     return;
1576             }
1577             break;
1578     }
1579
1580     // no, we didn't process it
1581     event.Skip();
1582 }
1583
1584 long wxTextCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
1585 {
1586     long lRc = wxTextCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
1587
1588     if ( nMsg == WM_GETDLGCODE )
1589     {
1590         // we always want the chars and the arrows: the arrows for navigation
1591         // and the chars because we want Ctrl-C to work even in a read only
1592         // control
1593         long lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
1594
1595         if ( IsEditable() )
1596         {
1597             // we may have several different cases:
1598             // 1. normal case: both TAB and ENTER are used for dlg navigation
1599             // 2. ctrl which wants TAB for itself: ENTER is used to pass to the
1600             //    next control in the dialog
1601             // 3. ctrl which wants ENTER for itself: TAB is used for dialog
1602             //    navigation
1603             // 4. ctrl which wants both TAB and ENTER: Ctrl-ENTER is used to go
1604             //    to the next control
1605
1606             // the multiline edit control should always get <Return> for itself
1607             if ( HasFlag(wxTE_PROCESS_ENTER) || HasFlag(wxTE_MULTILINE) )
1608                 lDlgCode |= DLGC_WANTMESSAGE;
1609
1610             if ( HasFlag(wxTE_PROCESS_TAB) )
1611                 lDlgCode |= DLGC_WANTTAB;
1612
1613             lRc |= lDlgCode;
1614         }
1615         else // !editable
1616         {
1617             // NB: use "=", not "|=" as the base class version returns the
1618             //     same flags is this state as usual (i.e. including
1619             //     DLGC_WANTMESSAGE). This is strange (how does it work in the
1620             //     native Win32 apps?) but for now live with it.
1621             lRc = lDlgCode;
1622         }
1623     }
1624
1625     return lRc;
1626 }
1627
1628 // ----------------------------------------------------------------------------
1629 // text control event processing
1630 // ----------------------------------------------------------------------------
1631
1632 bool wxTextCtrl::SendUpdateEvent()
1633 {
1634     // is event reporting suspended?
1635     if ( m_suppressNextUpdate )
1636     {
1637         // do process the next one
1638         m_suppressNextUpdate = FALSE;
1639
1640         return FALSE;
1641     }
1642
1643     wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, GetId());
1644     InitCommandEvent(event);
1645     event.SetString(GetValue());
1646
1647     return ProcessCommand(event);
1648 }
1649
1650 bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
1651 {
1652     switch ( param )
1653     {
1654         case EN_SETFOCUS:
1655         case EN_KILLFOCUS:
1656             {
1657                 wxFocusEvent event(param == EN_KILLFOCUS ? wxEVT_KILL_FOCUS
1658                                                          : wxEVT_SET_FOCUS,
1659                                    m_windowId);
1660                 event.SetEventObject(this);
1661                 GetEventHandler()->ProcessEvent(event);
1662             }
1663             break;
1664
1665         case EN_CHANGE:
1666             SendUpdateEvent();
1667             break;
1668
1669         case EN_MAXTEXT:
1670             // the text size limit has been hit -- try to increase it
1671             if ( !AdjustSpaceLimit() )
1672             {
1673                 wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, m_windowId);
1674                 InitCommandEvent(event);
1675                 event.SetString(GetValue());
1676                 ProcessCommand(event);
1677             }
1678             break;
1679
1680             // the other edit notification messages are not processed
1681         default:
1682             return FALSE;
1683     }
1684
1685     // processed
1686     return TRUE;
1687 }
1688
1689 WXHBRUSH wxTextCtrl::OnCtlColor(WXHDC pDC, WXHWND WXUNUSED(pWnd), WXUINT WXUNUSED(nCtlColor),
1690 #if wxUSE_CTL3D
1691                                WXUINT message,
1692                                WXWPARAM wParam,
1693                                WXLPARAM lParam
1694 #else
1695                                WXUINT WXUNUSED(message),
1696                                WXWPARAM WXUNUSED(wParam),
1697                                WXLPARAM WXUNUSED(lParam)
1698 #endif
1699     )
1700 {
1701 #if wxUSE_CTL3D
1702     if ( m_useCtl3D )
1703     {
1704         HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
1705         return (WXHBRUSH) hbrush;
1706     }
1707 #endif // wxUSE_CTL3D
1708
1709     HDC hdc = (HDC)pDC;
1710     wxColour colBack = GetBackgroundColour();
1711
1712     if (!IsEnabled() && (GetWindowStyle() & wxTE_MULTILINE) == 0)
1713         colBack = wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE);
1714
1715     ::SetBkColor(hdc, wxColourToRGB(colBack));
1716     ::SetTextColor(hdc, wxColourToRGB(GetForegroundColour()));
1717
1718     wxBrush *brush = wxTheBrushList->FindOrCreateBrush(colBack, wxSOLID);
1719
1720     return (WXHBRUSH)brush->GetResourceHandle();
1721 }
1722
1723 // In WIN16, need to override normal erasing because
1724 // Ctl3D doesn't use the wxWindows background colour.
1725 #ifdef __WIN16__
1726 void wxTextCtrl::OnEraseBackground(wxEraseEvent& event)
1727 {
1728     wxColour col(m_backgroundColour);
1729
1730 #if wxUSE_CTL3D
1731     if (m_useCtl3D)
1732         col = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
1733 #endif
1734
1735     RECT rect;
1736     ::GetClientRect(GetHwnd(), &rect);
1737
1738     COLORREF ref = wxColourToRGB(col);
1739     HBRUSH hBrush = ::CreateSolidBrush(ref);
1740     if ( !hBrush )
1741         wxLogLastError(wxT("CreateSolidBrush"));
1742
1743     HDC hdc = (HDC)event.GetDC()->GetHDC();
1744
1745     int mode = ::SetMapMode(hdc, MM_TEXT);
1746
1747     ::FillRect(hdc, &rect, hBrush);
1748     ::DeleteObject(hBrush);
1749     ::SetMapMode(hdc, mode);
1750
1751 }
1752 #endif // Win16
1753
1754 bool wxTextCtrl::AdjustSpaceLimit()
1755 {
1756 #ifndef __WIN16__
1757     unsigned int limit = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
1758
1759     // HACK: we try to automatically extend the limit for the amount of text
1760     //       to allow (interactively) entering more than 64Kb of text under
1761     //       Win9x but we shouldn't reset the text limit which was previously
1762     //       set explicitly with SetMaxLength()
1763     //
1764     //       we could solve this by storing the limit we set in wxTextCtrl but
1765     //       to save space we prefer to simply test here the actual limit
1766     //       value: we consider that SetMaxLength() can only be called for
1767     //       values < 32Kb
1768     if ( limit < 0x8000 )
1769     {
1770         // we've got more text than limit set by SetMaxLength()
1771         return FALSE;
1772     }
1773
1774     unsigned int len = ::GetWindowTextLength(GetHwnd());
1775     if ( len >= limit )
1776     {
1777         limit = len + 0x8000;    // 32Kb
1778
1779 #if wxUSE_RICHEDIT
1780         if ( IsRich() )
1781         {
1782             // as a nice side effect, this also allows passing limit > 64Kb
1783             ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, limit);
1784         }
1785         else
1786 #endif // wxUSE_RICHEDIT
1787         {
1788             if ( limit > 0xffff )
1789             {
1790                 // this will set it to a platform-dependent maximum (much more
1791                 // than 64Kb under NT)
1792                 limit = 0;
1793             }
1794
1795             ::SendMessage(GetHwnd(), EM_LIMITTEXT, limit, 0);
1796         }
1797     }
1798 #endif // !Win16
1799
1800     // we changed the limit
1801     return TRUE;
1802 }
1803
1804 bool wxTextCtrl::AcceptsFocus() const
1805 {
1806     // we don't want focus if we can't be edited unless we're a multiline
1807     // control because then it might be still nice to get focus from keyboard
1808     // to be able to scroll it without mouse
1809     return (IsEditable() || IsMultiLine()) && wxControl::AcceptsFocus();
1810 }
1811
1812 wxSize wxTextCtrl::DoGetBestSize() const
1813 {
1814     int cx, cy;
1815     wxGetCharSize(GetHWND(), &cx, &cy, &GetFont());
1816
1817     int wText = DEFAULT_ITEM_WIDTH;
1818
1819     int hText = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy);
1820     if ( m_windowStyle & wxTE_MULTILINE )
1821     {
1822         hText *= wxMax(GetNumberOfLines(), 5);
1823     }
1824     //else: for single line control everything is ok
1825
1826     return wxSize(wText, hText);
1827 }
1828
1829 // ----------------------------------------------------------------------------
1830 // standard handlers for standard edit menu events
1831 // ----------------------------------------------------------------------------
1832
1833 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1834 {
1835     Cut();
1836 }
1837
1838 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1839 {
1840     Copy();
1841 }
1842
1843 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1844 {
1845     Paste();
1846 }
1847
1848 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1849 {
1850     Undo();
1851 }
1852
1853 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1854 {
1855     Redo();
1856 }
1857
1858 void wxTextCtrl::OnDelete(wxCommandEvent& WXUNUSED(event))
1859 {
1860     long from, to;
1861     GetSelection(& from, & to);
1862     if (from != -1 && to != -1)
1863         Remove(from, to);
1864 }
1865
1866 void wxTextCtrl::OnSelectAll(wxCommandEvent& WXUNUSED(event))
1867 {
1868     SetSelection(-1, -1);
1869 }
1870
1871 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1872 {
1873     event.Enable( CanCut() );
1874 }
1875
1876 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1877 {
1878     event.Enable( CanCopy() );
1879 }
1880
1881 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1882 {
1883     event.Enable( CanPaste() );
1884 }
1885
1886 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1887 {
1888     event.Enable( CanUndo() );
1889 }
1890
1891 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1892 {
1893     event.Enable( CanRedo() );
1894 }
1895
1896 void wxTextCtrl::OnUpdateDelete(wxUpdateUIEvent& event)
1897 {
1898     long from, to;
1899     GetSelection(& from, & to);
1900     event.Enable(from != -1 && to != -1 && from != to && IsEditable()) ;
1901 }
1902
1903 void wxTextCtrl::OnUpdateSelectAll(wxUpdateUIEvent& event)
1904 {
1905     event.Enable(GetLastPosition() > 0);
1906 }
1907
1908 void wxTextCtrl::OnRightClick(wxMouseEvent& event)
1909 {
1910 #if wxUSE_RICHEDIT
1911     if (IsRich())
1912     {
1913         if (!m_privateContextMenu)
1914         {
1915             m_privateContextMenu = new wxMenu;
1916             m_privateContextMenu->Append(wxID_UNDO, _("&Undo"));
1917             m_privateContextMenu->Append(wxID_REDO, _("&Redo"));
1918             m_privateContextMenu->AppendSeparator();
1919             m_privateContextMenu->Append(wxID_CUT, _("Cu&t"));
1920             m_privateContextMenu->Append(wxID_COPY, _("&Copy"));
1921             m_privateContextMenu->Append(wxID_PASTE, _("&Paste"));
1922             m_privateContextMenu->Append(wxID_CLEAR, _("&Delete"));
1923             m_privateContextMenu->AppendSeparator();
1924             m_privateContextMenu->Append(wxID_SELECTALL, _("Select &All"));
1925         }
1926         PopupMenu(m_privateContextMenu, event.GetPosition());
1927         return;
1928     }
1929     else
1930 #endif
1931     event.Skip();
1932 }
1933
1934 void wxTextCtrl::OnSetFocus(wxFocusEvent& WXUNUSED(event))
1935 {
1936     // be sure the caret remains invisible if the user had hidden it
1937     if ( !m_isNativeCaretShown )
1938     {
1939         ::HideCaret(GetHwnd());
1940     }
1941 }
1942
1943 // the rest of the file only deals with the rich edit controls
1944 #if wxUSE_RICHEDIT
1945
1946 // ----------------------------------------------------------------------------
1947 // EN_LINK processing
1948 // ----------------------------------------------------------------------------
1949
1950 bool wxTextCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
1951 {
1952     NMHDR *hdr = (NMHDR* )lParam;
1953     switch ( hdr->code )
1954     {
1955        case EN_MSGFILTER:
1956             {
1957                 const MSGFILTER *msgf = (MSGFILTER *)lParam;
1958                 UINT msg = msgf->msg;
1959
1960                 // this is a bit crazy but richedit 1.0 sends us all mouse
1961                 // events _except_ WM_LBUTTONUP (don't ask me why) so we have
1962                 // generate the wxWin events for this message manually
1963                 //
1964                 // NB: in fact, this is still not totally correct as it does
1965                 //     send us WM_LBUTTONUP if the selection was cleared by the
1966                 //     last click -- so currently we get 2 events in this case,
1967                 //     but as I don't see any obvious way to check for this I
1968                 //     leave this code in place because it's still better than
1969                 //     not getting left up events at all
1970                 if ( msg == WM_LBUTTONUP )
1971                 {
1972                     WXUINT flags = msgf->wParam;
1973                     int x = GET_X_LPARAM(msgf->lParam),
1974                         y = GET_Y_LPARAM(msgf->lParam);
1975
1976                     HandleMouseEvent(msg, x, y, flags);
1977                 }
1978             }
1979
1980             // return TRUE to process the event (and FALSE to ignore it)
1981             return TRUE;
1982
1983         case EN_LINK:
1984             {
1985                 const ENLINK *enlink = (ENLINK *)hdr;
1986
1987                 switch ( enlink->msg )
1988                 {
1989                     case WM_SETCURSOR:
1990                         // ok, so it is hardcoded - do we really nee to
1991                         // customize it?
1992                         ::SetCursor(GetHcursorOf(wxCursor(wxCURSOR_HAND)));
1993                         *result = TRUE;
1994                         break;
1995
1996                     case WM_MOUSEMOVE:
1997                     case WM_LBUTTONDOWN:
1998                     case WM_LBUTTONUP:
1999                     case WM_LBUTTONDBLCLK:
2000                     case WM_RBUTTONDOWN:
2001                     case WM_RBUTTONUP:
2002                     case WM_RBUTTONDBLCLK:
2003                         // send a mouse event
2004                         {
2005                             static const wxEventType eventsMouse[] =
2006                             {
2007                                 wxEVT_MOTION,
2008                                 wxEVT_LEFT_DOWN,
2009                                 wxEVT_LEFT_UP,
2010                                 wxEVT_LEFT_DCLICK,
2011                                 wxEVT_RIGHT_DOWN,
2012                                 wxEVT_RIGHT_UP,
2013                                 wxEVT_RIGHT_DCLICK,
2014                             };
2015
2016                             // the event ids are consecutive
2017                             wxMouseEvent
2018                                 evtMouse(eventsMouse[enlink->msg - WM_MOUSEMOVE]);
2019
2020                             InitMouseEvent(evtMouse,
2021                                            GET_X_LPARAM(enlink->lParam),
2022                                            GET_Y_LPARAM(enlink->lParam),
2023                                            enlink->wParam);
2024
2025                             wxTextUrlEvent event(m_windowId, evtMouse,
2026                                                  enlink->chrg.cpMin,
2027                                                  enlink->chrg.cpMax);
2028
2029                             InitCommandEvent(event);
2030
2031                             *result = ProcessCommand(event);
2032                         }
2033                         break;
2034                 }
2035             }
2036             return TRUE;
2037     }
2038
2039     // not processed, leave it to the base class
2040     return wxTextCtrlBase::MSWOnNotify(idCtrl, lParam, result);
2041 }
2042
2043 // ----------------------------------------------------------------------------
2044 // colour setting for the rich edit controls
2045 // ----------------------------------------------------------------------------
2046
2047 bool wxTextCtrl::SetBackgroundColour(const wxColour& colour)
2048 {
2049     if ( !wxTextCtrlBase::SetBackgroundColour(colour) )
2050     {
2051         // colour didn't really change
2052         return FALSE;
2053     }
2054
2055     if ( IsRich() )
2056     {
2057         // rich edit doesn't use WM_CTLCOLOR, hence we need to send
2058         // EM_SETBKGNDCOLOR additionally
2059         ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour));
2060     }
2061
2062     return TRUE;
2063 }
2064
2065 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
2066 {
2067     if ( !wxTextCtrlBase::SetForegroundColour(colour) )
2068     {
2069         // colour didn't really change
2070         return FALSE;
2071     }
2072
2073     if ( IsRich() )
2074     {
2075         // change the colour of everything
2076         CHARFORMAT cf;
2077         wxZeroMemory(cf);
2078         cf.cbSize = sizeof(cf);
2079         cf.dwMask = CFM_COLOR;
2080         cf.crTextColor = wxColourToRGB(colour);
2081         ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf);
2082     }
2083
2084     return TRUE;
2085 }
2086
2087 // ----------------------------------------------------------------------------
2088 // styling support for rich edit controls
2089 // ----------------------------------------------------------------------------
2090
2091 #if wxUSE_RICHEDIT
2092
2093 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
2094 {
2095     if ( !IsRich() )
2096     {
2097         // can't do it with normal text control
2098         return FALSE;
2099     }
2100
2101     // the richedit 1.0 doesn't handle setting background colour, so don't
2102     // even try to do anything if it's the only thing we want to change
2103     if ( m_verRichEdit == 1 && !style.HasFont() && !style.HasTextColour() &&
2104         !style.HasLeftIndent() && !style.HasRightIndent() && !style.HasAlignment() &&
2105         !style.HasTabs() )
2106     {
2107         // nothing to do: return TRUE if there was really nothing to do and
2108         // FALSE if we failed to set bg colour
2109         return !style.HasBackgroundColour();
2110     }
2111
2112     // order the range if needed
2113     if ( start > end )
2114     {
2115         long tmp = start;
2116         start = end;
2117         end = tmp;
2118     }
2119
2120     // we can only change the format of the selection, so select the range we
2121     // want and restore the old selection later
2122     long startOld, endOld;
2123     GetSelection(&startOld, &endOld);
2124
2125     // but do we really have to change the selection?
2126     bool changeSel = start != startOld || end != endOld;
2127
2128     if ( changeSel )
2129     {
2130         DoSetSelection(start, end, FALSE /* don't scroll caret into view */);
2131     }
2132
2133     // initialize CHARFORMAT struct
2134 #if wxUSE_RICHEDIT2
2135     CHARFORMAT2 cf;
2136 #else
2137     CHARFORMAT cf;
2138 #endif
2139
2140     wxZeroMemory(cf);
2141
2142     // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2143     // CHARFORMAT in that case
2144 #if wxUSE_RICHEDIT2
2145     if ( m_verRichEdit == 1 )
2146     {
2147         // this is the only thing the control is going to grok
2148         cf.cbSize = sizeof(CHARFORMAT);
2149     }
2150     else
2151 #endif
2152     {
2153         // CHARFORMAT or CHARFORMAT2
2154         cf.cbSize = sizeof(cf);
2155     }
2156
2157     if ( style.HasFont() )
2158     {
2159         // VZ: CFM_CHARSET doesn't seem to do anything at all in RichEdit 2.0
2160         //     but using it doesn't seem to hurt neither so leaving it for now
2161
2162         cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET |
2163                      CFM_ITALIC | CFM_BOLD | CFM_UNDERLINE;
2164
2165         // fill in data from LOGFONT but recalculate lfHeight because we need
2166         // the real height in twips and not the negative number which
2167         // wxFillLogFont() returns (this is correct in general and works with
2168         // the Windows font mapper, but not here)
2169         LOGFONT lf;
2170         wxFillLogFont(&lf, &style.GetFont());
2171         cf.yHeight = 20*style.GetFont().GetPointSize(); // 1 pt = 20 twips
2172         cf.bCharSet = lf.lfCharSet;
2173         cf.bPitchAndFamily = lf.lfPitchAndFamily;
2174         wxStrncpy( cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName) );
2175
2176         // also deal with underline/italic/bold attributes: note that we must
2177         // always set CFM_ITALIC &c bits in dwMask, even if we don't set the
2178         // style to allow clearing it
2179         if ( lf.lfItalic )
2180         {
2181             cf.dwEffects |= CFE_ITALIC;
2182         }
2183
2184         if ( lf.lfWeight == FW_BOLD )
2185         {
2186             cf.dwEffects |= CFE_BOLD;
2187         }
2188
2189         if ( lf.lfUnderline )
2190         {
2191             cf.dwEffects |= CFE_UNDERLINE;
2192         }
2193
2194         // strikeout fonts are not supported by wxWindows
2195     }
2196
2197     if ( style.HasTextColour() )
2198     {
2199         cf.dwMask |= CFM_COLOR;
2200         cf.crTextColor = wxColourToRGB(style.GetTextColour());
2201     }
2202
2203 #if wxUSE_RICHEDIT2
2204     if ( m_verRichEdit != 1 && style.HasBackgroundColour() )
2205     {
2206         cf.dwMask |= CFM_BACKCOLOR;
2207         cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
2208     }
2209 #endif // wxUSE_RICHEDIT2
2210
2211     // do format the selection
2212     bool ok = ::SendMessage(GetHwnd(), EM_SETCHARFORMAT,
2213                             SCF_SELECTION, (LPARAM)&cf) != 0;
2214     if ( !ok )
2215     {
2216         wxLogDebug(_T("SendMessage(EM_SETCHARFORMAT, SCF_SELECTION) failed"));
2217     }
2218
2219     // now do the paragraph formatting
2220     PARAFORMAT2 pf;
2221     wxZeroMemory(pf);
2222     // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2223     // PARAFORMAT in that case
2224 #if wxUSE_RICHEDIT2
2225     if ( m_verRichEdit == 1 )
2226     {
2227         // this is the only thing the control is going to grok
2228         pf.cbSize = sizeof(PARAFORMAT);
2229     }
2230     else
2231 #endif
2232     {
2233         // PARAFORMAT or PARAFORMAT2
2234         pf.cbSize = sizeof(pf);
2235     }
2236
2237     if (style.HasAlignment())
2238     {
2239         pf.dwMask |= PFM_ALIGNMENT;
2240         if (style.GetAlignment() == wxTEXT_ALIGNMENT_RIGHT)
2241             pf.wAlignment = PFA_RIGHT;
2242         else if (style.GetAlignment() == wxTEXT_ALIGNMENT_CENTRE)
2243             pf.wAlignment = PFA_CENTER;
2244         else if (style.GetAlignment() == wxTEXT_ALIGNMENT_JUSTIFIED)
2245             pf.wAlignment = PFA_JUSTIFY;
2246         else
2247             pf.wAlignment = PFA_LEFT;
2248     }
2249
2250     if (style.HasLeftIndent())
2251     {
2252         pf.dwMask |= PFM_STARTINDENT;
2253
2254         // Convert from 1/10 mm to TWIPS
2255         pf.dxStartIndent = (int) (((double) style.GetLeftIndent()) * mm2twips / 10.0) ;
2256
2257         // TODO: do we need to specify dxOffset?
2258     }
2259
2260     if (style.HasRightIndent())
2261     {
2262         pf.dwMask |= PFM_RIGHTINDENT;
2263
2264         // Convert from 1/10 mm to TWIPS
2265         pf.dxRightIndent = (int) (((double) style.GetRightIndent()) * mm2twips / 10.0) ;
2266     }
2267
2268     if (style.HasTabs())
2269     {
2270         pf.dwMask |= PFM_TABSTOPS;
2271
2272         const wxArrayInt& tabs = style.GetTabs();
2273
2274         pf.cTabCount = wxMin(tabs.GetCount(), MAX_TAB_STOPS);
2275         size_t i;
2276         for (i = 0; i < (size_t) pf.cTabCount; i++)
2277         {
2278             // Convert from 1/10 mm to TWIPS
2279             pf.rgxTabs[i] = (int) (((double) tabs[i]) * mm2twips / 10.0) ;
2280         }
2281     }
2282
2283     if (pf.dwMask != 0)
2284     {
2285         // do format the selection
2286         bool ok = ::SendMessage(GetHwnd(), EM_SETPARAFORMAT,
2287             0, (LPARAM) &pf) != 0;
2288         if ( !ok )
2289         {
2290             wxLogDebug(_T("SendMessage(EM_SETPARAFORMAT, 0) failed"));
2291         }
2292     }
2293
2294     if ( changeSel )
2295     {
2296         // restore the original selection
2297         DoSetSelection(startOld, endOld, FALSE);
2298     }
2299
2300     return ok;
2301 }
2302
2303 bool wxTextCtrl::SetDefaultStyle(const wxTextAttr& style)
2304 {
2305     if ( !wxTextCtrlBase::SetDefaultStyle(style) )
2306         return FALSE;
2307
2308     // we have to do this or the style wouldn't apply for the text typed by the
2309     // user
2310     long posLast = GetLastPosition();
2311     SetStyle(posLast, posLast, m_defaultStyle);
2312
2313     return TRUE;
2314 }
2315
2316 bool wxTextCtrl::GetStyle(long position, wxTextAttr& style)
2317 {
2318     if ( !IsRich() )
2319     {
2320         // can't do it with normal text control
2321         return FALSE;
2322     }
2323
2324     // initialize CHARFORMAT struct
2325 #if wxUSE_RICHEDIT2
2326     CHARFORMAT2 cf;
2327 #else
2328     CHARFORMAT cf;
2329 #endif
2330
2331     wxZeroMemory(cf);
2332
2333     // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2334     // CHARFORMAT in that case
2335 #if wxUSE_RICHEDIT2
2336     if ( m_verRichEdit == 1 )
2337     {
2338         // this is the only thing the control is going to grok
2339         cf.cbSize = sizeof(CHARFORMAT);
2340     }
2341     else
2342 #endif
2343     {
2344         // CHARFORMAT or CHARFORMAT2
2345         cf.cbSize = sizeof(cf);
2346     }
2347     // we can only change the format of the selection, so select the range we
2348     // want and restore the old selection later
2349     long startOld, endOld;
2350     GetSelection(&startOld, &endOld);
2351
2352     // but do we really have to change the selection?
2353     bool changeSel = position != startOld || position != endOld;
2354
2355     if ( changeSel )
2356     {
2357         DoSetSelection(position, position, FALSE /* don't scroll caret into view */);
2358     }
2359
2360     // get the selection formatting
2361     (void) ::SendMessage(GetHwnd(), EM_GETCHARFORMAT,
2362                             SCF_SELECTION, (LPARAM)&cf) ;
2363
2364     LOGFONT lf;
2365     lf.lfHeight = cf.yHeight;
2366     lf.lfWidth = 0;
2367     lf.lfCharSet = ANSI_CHARSET; // FIXME: how to get correct charset?
2368     lf.lfClipPrecision = 0;
2369     lf.lfEscapement = 0;
2370     wxStrcpy(lf.lfFaceName, cf.szFaceName);
2371     if (cf.dwEffects & CFE_ITALIC)
2372         lf.lfItalic = TRUE;
2373     lf.lfOrientation = 0;
2374     lf.lfPitchAndFamily = cf.bPitchAndFamily;
2375     lf.lfQuality = 0;
2376     if (cf.dwEffects & CFE_STRIKEOUT)
2377         lf.lfStrikeOut = TRUE;
2378     if (cf.dwEffects & CFE_UNDERLINE)
2379         lf.lfUnderline = TRUE;
2380     if (cf.dwEffects & CFE_BOLD)
2381         lf.lfWeight = FW_BOLD;
2382
2383     wxFont font = wxCreateFontFromLogFont(& lf);
2384     if (font.Ok())
2385     {
2386         style.SetFont(font);
2387     }
2388     style.SetTextColour(wxColour(cf.crTextColor));
2389
2390 #if wxUSE_RICHEDIT2
2391     if ( m_verRichEdit != 1 )
2392     {
2393         // cf.dwMask |= CFM_BACKCOLOR;
2394         style.SetBackgroundColour(wxColour(cf.crBackColor));
2395     }
2396 #endif // wxUSE_RICHEDIT2
2397
2398     // now get the paragraph formatting
2399     PARAFORMAT2 pf;
2400     wxZeroMemory(pf);
2401     // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2402     // PARAFORMAT in that case
2403 #if wxUSE_RICHEDIT2
2404     if ( m_verRichEdit == 1 )
2405     {
2406         // this is the only thing the control is going to grok
2407         pf.cbSize = sizeof(PARAFORMAT);
2408     }
2409     else
2410 #endif
2411     {
2412         // PARAFORMAT or PARAFORMAT2
2413         pf.cbSize = sizeof(pf);
2414     }
2415
2416     // do format the selection
2417     (void) ::SendMessage(GetHwnd(), EM_GETPARAFORMAT, 0, (LPARAM) &pf) ;
2418
2419     style.SetLeftIndent( (int) ((double) pf.dxStartIndent * twips2mm * 10.0) );
2420     style.SetRightIndent( (int) ((double) pf.dxRightIndent * twips2mm * 10.0) );
2421
2422     if (pf.wAlignment == PFA_CENTER)
2423         style.SetAlignment(wxTEXT_ALIGNMENT_CENTRE);
2424     else if (pf.wAlignment == PFA_RIGHT)
2425         style.SetAlignment(wxTEXT_ALIGNMENT_RIGHT);
2426     else if (pf.wAlignment == PFA_JUSTIFY)
2427         style.SetAlignment(wxTEXT_ALIGNMENT_JUSTIFIED);
2428     else
2429         style.SetAlignment(wxTEXT_ALIGNMENT_LEFT);
2430
2431     wxArrayInt tabStops;
2432     size_t i;
2433     for (i = 0; i < (size_t) pf.cTabCount; i++)
2434     {
2435         tabStops[i] = (int) ((double) (pf.rgxTabs[i] & 0xFFFF) * twips2mm * 10.0) ;
2436     }
2437
2438     if ( changeSel )
2439     {
2440         // restore the original selection
2441         DoSetSelection(startOld, endOld, FALSE);
2442     }
2443
2444     return TRUE;
2445 }
2446
2447 #endif
2448
2449 // ----------------------------------------------------------------------------
2450 // wxRichEditModule
2451 // ----------------------------------------------------------------------------
2452
2453 bool wxRichEditModule::OnInit()
2454 {
2455     // don't do anything - we will load it when needed
2456     return TRUE;
2457 }
2458
2459 void wxRichEditModule::OnExit()
2460 {
2461     for ( size_t i = 0; i < WXSIZEOF(ms_hRichEdit); i++ )
2462     {
2463         if ( ms_hRichEdit[i] )
2464         {
2465             ::FreeLibrary(ms_hRichEdit[i]);
2466             ms_hRichEdit[i] = NULL;
2467         }
2468     }
2469 }
2470
2471 /* static */
2472 bool wxRichEditModule::Load(int version)
2473 {
2474     // we don't support loading richedit 3.0 as I don't know how to distinguish
2475     // it from 2.0 anyhow
2476     wxCHECK_MSG( version == 1 || version == 2, FALSE,
2477                  _T("incorrect richedit control version requested") );
2478
2479     // make it the index in the array
2480     version--;
2481
2482     if ( ms_hRichEdit[version] == (HINSTANCE)-1 )
2483     {
2484         // we had already tried to load it and failed
2485         return FALSE;
2486     }
2487
2488     if ( ms_hRichEdit[version] )
2489     {
2490         // we've already got this one
2491         return TRUE;
2492     }
2493
2494     wxString dllname = version ? _T("riched20") : _T("riched32");
2495     dllname += _T(".dll");
2496
2497     ms_hRichEdit[version] = ::LoadLibrary(dllname);
2498
2499     if ( !ms_hRichEdit[version] )
2500     {
2501         wxLogSysError(_("Could not load Rich Edit DLL '%s'"), dllname.c_str());
2502
2503         ms_hRichEdit[version] = (HINSTANCE)-1;
2504
2505         return FALSE;
2506     }
2507
2508     return TRUE;
2509 }
2510
2511 #endif // wxUSE_RICHEDIT
2512
2513 #endif // wxUSE_TEXTCTRL