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(wxNO_BORDER)
 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(wxNO_FULL_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             // we must use EM_STREAMOUT if we don't want to lose all characters
 534             // not representable in the current character set (EM_GETTEXTRANGE
 535             // simply replaces them with question marks...)
 536             //
 537             // as EM_STREAMOUT only works for the entire controls contents (or
 538             // just the selection but it's probably a bad idea to play games
 539             // with selection here...), we can't use it unless we're called
 540             // from GetValue(), i.e. we want to retrieve all text
 541             if ( GetRichVersion() > 1 && (from == 0 && to >= len) )
 542             {
 543                 wxFont font = m_defaultStyle.GetFont();
 544                 if ( !font.Ok() )
 545                     font = GetFont();
 546
 547                 if ( font.Ok() )
 548                 {
 549                    wxFontEncoding encoding = font.GetEncoding();
 550                    if ( encoding != wxFONTENCODING_SYSTEM )
 551                    {
 552                        str = StreamOut(encoding);
 553                    }
 554                 }
 555             }
 556
 557             // StreamOut() wasn't used or failed, try to do it in normal way
 558             if ( str.empty() )
 559             {
 560                 // alloc one extra WORD as needed by the control
 561                 wxStringBuffer tmp(str, ++len);
 562                 wxChar *p = tmp;
 563
 564                 TEXTRANGE textRange;
 565                 textRange.chrg.cpMin = from;
 566                 textRange.chrg.cpMax = to == -1 ? len : to;
 567                 textRange.lpstrText = p;
 568
 569                 (void)SendMessage(GetHwnd(), EM_GETTEXTRANGE,
 570                                   0, (LPARAM)&textRange);
 571
 572                 if ( m_verRichEdit > 1 )
 573                 {
 574                     // RichEdit 2.0 uses just CR ('\r') for the
 575                     // newlines which is neither Unix nor Windows
 576                     // style - convert it to something reasonable
 577                     for ( ; *p; p++ )
 578                     {
 579                         if ( *p == _T('\r') )
 580                             *p = _T('\n');
 581                     }
 582                 }
 583             }
 584
 585             if ( m_verRichEdit == 1 )
 586             {
 587                 // convert to the canonical form - see comment below
 588                 str = wxTextFile::Translate(str, wxTextFileType_Unix);
 589             }
 590         }
 591         //else: no text at all, leave the string empty
 592     }
 593     else
 594 #endif // wxUSE_RICHEDIT
 595     {
 596         // retrieve all text
 597         str = wxGetWindowText(GetHWND());
 598
 599         // need only a range?
 600         if ( from < to )
 601         {
 602             str = str.Mid(from, to - from);
 603         }
 604
 605         // WM_GETTEXT uses standard DOS CR+LF (\r\n) convention - convert to the
 606         // canonical one (same one as above) for consistency with the other kinds
 607         // of controls and, more importantly, with the other ports
 608         str = wxTextFile::Translate(str, wxTextFileType_Unix);
 609     }
 610
 611     return str;
 612 }
 613
 614 void wxTextCtrl::SetValue(const wxString& value)
 615 {
 616     // if the text is long enough, it's faster to just set it instead of first
 617     // comparing it with the old one (chances are that it will be different
 618     // anyhow, this comparison is there to avoid flicker for small single-line
 619     // edit controls mostly)
 620     if ( (value.length() > 0x400) || (value != GetValue()) )
 621     {
 622         DoWriteText(value, FALSE /* not selection only */);
 623     }
 624     else // same text
 625     {
 626         // still send an event for consistency
 627         SendUpdateEvent();
 628     }
 629
 630     // we should reset the modified flag even if the value didn't really change
 631
 632     // mark the control as being not dirty - we changed its text, not the
 633     // user
 634     DiscardEdits();
 635
 636     // for compatibility, don't move the cursor when doing SetValue()
 637     SetInsertionPoint(0);
 638 }
 639
 640 #if wxUSE_RICHEDIT && (!wxUSE_UNICODE || wxUSE_UNICODE_MSLU)
 641
 642 // TODO: using memcpy() would improve performance a lot for big amounts of text
 643
 644 DWORD CALLBACK
 645 wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb)
 646 {
 647     *pcb = 0;
 648
 649     const wchar_t ** const ppws = (const wchar_t **)dwCookie;
 650
 651     wchar_t *wbuf = (wchar_t *)buf;
 652     const wchar_t *wpc = *ppws;
 653     while ( cb && *wpc )
 654     {
 655         *wbuf++ = *wpc++;
 656
 657         cb -= sizeof(wchar_t);
 658         (*pcb) += sizeof(wchar_t);
 659     }
 660
 661     *ppws = wpc;
 662
 663     return 0;
 664 }
 665
 666 DWORD CALLBACK
 667 wxRichEditStreamOut(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb)
 668 {
 669     *pcb = 0;
 670
 671     wchar_t ** const ppws = (wchar_t **)dwCookie;
 672
 673     const wchar_t *wbuf = (const wchar_t *)buf;
 674     wchar_t *wpc = *ppws;
 675     while ( cb && *wpc )
 676     {
 677          *wpc++ = *wbuf++;
 678
 679         cb -= sizeof(wchar_t);
 680         (*pcb) += sizeof(wchar_t);
 681     }
 682
 683     *ppws = wpc;
 684
 685     return 0;
 686 }
 687
 688
 689 // from utils.cpp
 690 extern WXDLLIMPEXP_BASE long wxEncodingToCodepage(wxFontEncoding encoding);
 691
 692 #if wxUSE_UNICODE_MSLU
 693     #define UNUSED_IF_MSLU(param)
 694 #else
 695     #define UNUSED_IF_MSLU(param) param
 696 #endif
 697
 698 bool
 699 wxTextCtrl::StreamIn(const wxString& value,
 700                      wxFontEncoding UNUSED_IF_MSLU(encoding),
 701                      bool selectionOnly)
 702 {
 703 #if wxUSE_UNICODE_MSLU
 704     const wchar_t *wpc = value.c_str();
 705 #else // !wxUSE_UNICODE_MSLU
 706     // we have to use EM_STREAMIN to force richedit control 2.0+ to show any
 707     // text in the non default charset -- otherwise it thinks it knows better
 708     // than we do and always shows it in the default one
 709
 710     // first get the Windows code page for this encoding
 711     long codepage = wxEncodingToCodepage(encoding);
 712     if ( codepage == -1 )
 713     {
 714         // unknown encoding
 715         return FALSE;
 716     }
 717
 718     // next translate to Unicode using this code page
 719     int len = ::MultiByteToWideChar(codepage, 0, value, -1, NULL, 0);
 720
 721 #if wxUSE_WCHAR_T
 722     wxWCharBuffer wchBuf(len);
 723 #else
 724     wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
 725 #endif
 726
 727     if ( !::MultiByteToWideChar(codepage, 0, value, -1,
 728                                 (wchar_t *)(const wchar_t *)wchBuf, len) )
 729     {
 730         wxLogLastError(_T("MultiByteToWideChar"));
 731     }
 732
 733     // finally, stream it in the control
 734     const wchar_t *wpc = wchBuf;
 735 #endif // wxUSE_UNICODE_MSLU
 736
 737     EDITSTREAM eds;
 738     wxZeroMemory(eds);
 739     eds.dwCookie = (DWORD)&wpc;
 740     // the cast below is needed for broken (very) old mingw32 headers
 741     eds.pfnCallback = (EDITSTREAMCALLBACK)wxRichEditStreamIn;
 742
 743     // we're going to receive 2 EN_CHANGE notifications if we got any selection
 744     // (same problem as in DoWriteText())
 745     if ( selectionOnly && HasSelection() )
 746     {
 747         // so suppress one of them
 748         m_suppressNextUpdate = TRUE;
 749     }
 750
 751     ::SendMessage(GetHwnd(), EM_STREAMIN,
 752                   SF_TEXT |
 753                   SF_UNICODE |
 754                   (selectionOnly ? SFF_SELECTION : 0),
 755                   (LPARAM)&eds);
 756
 757     if ( eds.dwError )
 758     {
 759         wxLogLastError(_T("EM_STREAMIN"));
 760     }
 761
 762 #if !wxUSE_WCHAR_T
 763     free(wchBuf);
 764 #endif // !wxUSE_WCHAR_T
 765
 766     return TRUE;
 767 }
 768
 769 #if !wxUSE_UNICODE_MSLU
 770
 771 wxString
 772 wxTextCtrl::StreamOut(wxFontEncoding encoding, bool selectionOnly) const
 773 {
 774     wxString out;
 775
 776     const int len = GetWindowTextLength(GetHwnd());
 777
 778 #if wxUSE_WCHAR_T
 779     wxWCharBuffer wchBuf(len);
 780     wchar_t *wpc = wchBuf.data();
 781 #else
 782     wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
 783     wchar_t *wpc = wchBuf;
 784 #endif
 785
 786     EDITSTREAM eds;
 787     wxZeroMemory(eds);
 788     eds.dwCookie = (DWORD)&wpc;
 789     eds.pfnCallback = wxRichEditStreamOut;
 790
 791     ::SendMessage
 792       (
 793         GetHwnd(),
 794         EM_STREAMOUT,
 795         SF_TEXT | SF_UNICODE | (selectionOnly ? SFF_SELECTION : 0),
 796         (LPARAM)&eds
 797       );
 798
 799     if ( eds.dwError )
 800     {
 801         wxLogLastError(_T("EM_STREAMOUT"));
 802     }
 803     else // streamed out ok
 804     {
 805         // now convert to the given encoding (this is a lossful conversion but
 806         // what else can we do)
 807         wxCSConv conv(encoding);
 808         size_t lenNeeded = conv.WC2MB(NULL, wchBuf, len);
 809         if ( lenNeeded )
 810         {
 811             conv.WC2MB(wxStringBuffer(out, lenNeeded), wchBuf, len);
 812         }
 813     }
 814
 815 #if !wxUSE_WCHAR_T
 816     free(wchBuf);
 817 #endif // !wxUSE_WCHAR_T
 818
 819     return out;
 820 }
 821
 822 #endif // !wxUSE_UNICODE_MSLU
 823
 824 #endif // wxUSE_RICHEDIT
 825
 826 void wxTextCtrl::WriteText(const wxString& value)
 827 {
 828     DoWriteText(value);
 829 }
 830
 831 void wxTextCtrl::DoWriteText(const wxString& value, bool selectionOnly)
 832 {
 833     wxString valueDos;
 834     if ( m_windowStyle & wxTE_MULTILINE )
 835         valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
 836     else
 837         valueDos = value;
 838
 839 #if wxUSE_RICHEDIT
 840     // there are several complications with the rich edit controls here
 841     bool done = FALSE;
 842     if ( IsRich() )
 843     {
 844         // first, ensure that the new text will be in the default style
 845         if ( !m_defaultStyle.IsDefault() )
 846         {
 847             long start, end;
 848             GetSelection(&start, &end);
 849             SetStyle(start, end, m_defaultStyle);
 850         }
 851
 852 #if wxUSE_UNICODE_MSLU
 853         // RichEdit doesn't have Unicode version of EM_REPLACESEL on Win9x,
 854         // but EM_STREAMIN works
 855         if ( wxUsingUnicowsDll() && GetRichVersion() > 1 )
 856         {
 857            done = StreamIn(valueDos, wxFONTENCODING_SYSTEM, selectionOnly);
 858         }
 859 #endif // wxUSE_UNICODE_MSLU
 860
 861 #if !wxUSE_UNICODE
 862         // next check if the text we're inserting must be shown in a non
 863         // default charset -- this only works for RichEdit > 1.0
 864         if ( GetRichVersion() > 1 )
 865         {
 866             wxFont font = m_defaultStyle.GetFont();
 867             if ( !font.Ok() )
 868                 font = GetFont();
 869
 870             if ( font.Ok() )
 871             {
 872                wxFontEncoding encoding = font.GetEncoding();
 873                if ( encoding != wxFONTENCODING_SYSTEM )
 874                {
 875                    done = StreamIn(valueDos, encoding, selectionOnly);
 876                }
 877             }
 878         }
 879 #endif // !wxUSE_UNICODE
 880     }
 881
 882     if ( !done )
 883 #endif // wxUSE_RICHEDIT
 884     {
 885         // in some cases we get 2 EN_CHANGE notifications after the SendMessage
 886         // call below which is confusing for the client code and so should be
 887         // avoided
 888         //
 889         // these cases are: (a) plain EDIT controls if EM_REPLACESEL is used
 890         // and there is a non empty selection currently and (b) rich text
 891         // controls in any case
 892         if (
 893 #if wxUSE_RICHEDIT
 894             IsRich() ||
 895 #endif // wxUSE_RICHEDIT
 896             (selectionOnly && HasSelection()) )
 897         {
 898             m_suppressNextUpdate = TRUE;
 899         }
 900
 901         ::SendMessage(GetHwnd(), selectionOnly ? EM_REPLACESEL : WM_SETTEXT,
 902                       0, (LPARAM)valueDos.c_str());
 903
 904         // OTOH, non rich text controls don't generate any events at all when
 905         // we use WM_SETTEXT -- have to emulate them here
 906         if ( !selectionOnly
 907 #if wxUSE_RICHEDIT
 908                 && !IsRich()
 909 #endif // wxUSE_RICHEDIT
 910            )
 911         {
 912             // Windows already sends an update event for single-line
 913             // controls.
 914             if ( m_windowStyle & wxTE_MULTILINE )
 915                 SendUpdateEvent();
 916         }
 917     }
 918
 919     AdjustSpaceLimit();
 920 }
 921
 922 void wxTextCtrl::AppendText(const wxString& text)
 923 {
 924     SetInsertionPointEnd();
 925
 926     WriteText(text);
 927
 928 #if wxUSE_RICHEDIT
 929     if ( IsMultiLine() && GetRichVersion() > 1 )
 930     {
 931         // setting the caret to the end and showing it simply doesn't work for
 932         // RichEdit 2.0 -- force it to still do what we want
 933         ::SendMessage(GetHwnd(), EM_LINESCROLL, 0, GetNumberOfLines());
 934     }
 935 #endif // wxUSE_RICHEDIT
 936 }
 937
 938 void wxTextCtrl::Clear()
 939 {
 940     ::SetWindowText(GetHwnd(), wxEmptyString);
 941
 942 #if wxUSE_RICHEDIT
 943     if ( !IsRich() )
 944 #endif // wxUSE_RICHEDIT
 945     {
 946         // rich edit controls send EN_UPDATE from WM_SETTEXT handler themselves
 947         // but the normal ones don't -- make Clear() behaviour consistent by
 948         // always sending this event
 949
 950         // Windows already sends an update event for single-line
 951         // controls.
 952         if ( m_windowStyle & wxTE_MULTILINE )
 953             SendUpdateEvent();
 954     }
 955 }
 956
 957 #ifdef __WIN32__
 958
 959 bool wxTextCtrl::EmulateKeyPress(const wxKeyEvent& event)
 960 {
 961     SetFocus();
 962
 963     size_t lenOld = GetValue().length();
 964
 965     wxUint32 code = event.GetRawKeyCode();
 966     ::keybd_event(code, 0, 0 /* key press */, 0);
 967     ::keybd_event(code, 0, KEYEVENTF_KEYUP, 0);
 968
 969     // assume that any alphanumeric key changes the total number of characters
 970     // in the control - this should work in 99% of cases
 971     return GetValue().length() != lenOld;
 972 }
 973
 974 #endif // __WIN32__
 975
 976 // ----------------------------------------------------------------------------
 977 // Clipboard operations
 978 // ----------------------------------------------------------------------------
 979
 980 void wxTextCtrl::Copy()
 981 {
 982     if (CanCopy())
 983     {
 984         ::SendMessage(GetHwnd(), WM_COPY, 0, 0L);
 985     }
 986 }
 987
 988 void wxTextCtrl::Cut()
 989 {
 990     if (CanCut())
 991     {
 992         ::SendMessage(GetHwnd(), WM_CUT, 0, 0L);
 993     }
 994 }
 995
 996 void wxTextCtrl::Paste()
 997 {
 998     if (CanPaste())
 999     {
1000         ::SendMessage(GetHwnd(), WM_PASTE, 0, 0L);
1001     }
1002 }
1003
1004 bool wxTextCtrl::HasSelection() const
1005 {
1006     long from, to;
1007     GetSelection(&from, &to);
1008     return from != to;
1009 }
1010
1011 bool wxTextCtrl::CanCopy() const
1012 {
1013     // Can copy if there's a selection
1014     return HasSelection();
1015 }
1016
1017 bool wxTextCtrl::CanCut() const
1018 {
1019     return CanCopy() && IsEditable();
1020 }
1021
1022 bool wxTextCtrl::CanPaste() const
1023 {
1024     if ( !IsEditable() )
1025         return FALSE;
1026
1027 #if wxUSE_RICHEDIT
1028     if ( IsRich() )
1029     {
1030         UINT cf = 0; // 0 == any format
1031
1032         return ::SendMessage(GetHwnd(), EM_CANPASTE, cf, 0) != 0;
1033     }
1034 #endif // wxUSE_RICHEDIT
1035
1036     // Standard edit control: check for straight text on clipboard
1037     if ( !::OpenClipboard(GetHwndOf(wxTheApp->GetTopWindow())) )
1038         return FALSE;
1039
1040     bool isTextAvailable = ::IsClipboardFormatAvailable(CF_TEXT) != 0;
1041     ::CloseClipboard();
1042
1043     return isTextAvailable;
1044 }
1045
1046 // ----------------------------------------------------------------------------
1047 // Accessors
1048 // ----------------------------------------------------------------------------
1049
1050 void wxTextCtrl::SetEditable(bool editable)
1051 {
1052     HWND hWnd = GetHwnd();
1053     SendMessage(hWnd, EM_SETREADONLY, (WPARAM)!editable, (LPARAM)0L);
1054 }
1055
1056 void wxTextCtrl::SetInsertionPoint(long pos)
1057 {
1058     DoSetSelection(pos, pos);
1059 }
1060
1061 void wxTextCtrl::SetInsertionPointEnd()
1062 {
1063     // we must not do anything if the caret is already there because calling
1064     // SetInsertionPoint() thaws the controls if Freeze() had been called even
1065     // if it doesn't actually move the caret anywhere and so the simple fact of
1066     // doing it results in horrible flicker when appending big amounts of text
1067     // to the control in a few chunks (see DoAddText() test in the text sample)
1068     if ( GetInsertionPoint() == GetLastPosition() )
1069         return;
1070
1071     long pos;
1072
1073 #if wxUSE_RICHEDIT
1074     if ( m_verRichEdit == 1 )
1075     {
1076         // we don't have to waste time calling GetLastPosition() in this case
1077         pos = -1;
1078     }
1079     else // !RichEdit 1.0
1080 #endif // wxUSE_RICHEDIT
1081     {
1082         pos = GetLastPosition();
1083     }
1084
1085     SetInsertionPoint(pos);
1086 }
1087
1088 long wxTextCtrl::GetInsertionPoint() const
1089 {
1090 #if wxUSE_RICHEDIT
1091     if ( IsRich() )
1092     {
1093         CHARRANGE range;
1094         range.cpMin = 0;
1095         range.cpMax = 0;
1096         SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
1097         return range.cpMin;
1098     }
1099 #endif // wxUSE_RICHEDIT
1100
1101     DWORD Pos = (DWORD)SendMessage(GetHwnd(), EM_GETSEL, 0, 0L);
1102     return Pos & 0xFFFF;
1103 }
1104
1105 long wxTextCtrl::GetLastPosition() const
1106 {
1107     int numLines = GetNumberOfLines();
1108     long posStartLastLine = XYToPosition(0, numLines - 1);
1109
1110     long lenLastLine = GetLengthOfLineContainingPos(posStartLastLine);
1111
1112     return posStartLastLine + lenLastLine;
1113 }
1114
1115 // If the return values from and to are the same, there is no
1116 // selection.
1117 void wxTextCtrl::GetSelection(long* from, long* to) const
1118 {
1119 #if wxUSE_RICHEDIT
1120     if ( IsRich() )
1121     {
1122         CHARRANGE charRange;
1123         ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &charRange);
1124
1125         *from = charRange.cpMin;
1126         *to = charRange.cpMax;
1127     }
1128     else
1129 #endif // !wxUSE_RICHEDIT
1130     {
1131         DWORD dwStart, dwEnd;
1132         ::SendMessage(GetHwnd(), EM_GETSEL, (WPARAM)&dwStart, (LPARAM)&dwEnd);
1133
1134         *from = dwStart;
1135         *to = dwEnd;
1136     }
1137 }
1138
1139 bool wxTextCtrl::IsEditable() const
1140 {
1141     // strangely enough, we may be called before the control is created: our
1142     // own Create() calls MSWGetStyle() which calls AcceptsFocus() which calls
1143     // us
1144     if ( !m_hWnd )
1145         return TRUE;
1146
1147     long style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1148
1149     return (style & ES_READONLY) == 0;
1150 }
1151
1152 // ----------------------------------------------------------------------------
1153 // selection
1154 // ----------------------------------------------------------------------------
1155
1156 void wxTextCtrl::SetSelection(long from, long to)
1157 {
1158     // if from and to are both -1, it means (in wxWindows) that all text should
1159     // be selected - translate into Windows convention
1160     if ( (from == -1) && (to == -1) )
1161     {
1162         from = 0;
1163         to = -1;
1164     }
1165
1166     DoSetSelection(from, to);
1167 }
1168
1169 void wxTextCtrl::DoSetSelection(long from, long to, bool scrollCaret)
1170 {
1171     HWND hWnd = GetHwnd();
1172
1173 #ifdef __WIN32__
1174 #if wxUSE_RICHEDIT
1175     if ( IsRich() )
1176     {
1177         CHARRANGE range;
1178         range.cpMin = from;
1179         range.cpMax = to;
1180         SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM) &range);
1181     }
1182     else
1183 #endif // wxUSE_RICHEDIT
1184     {
1185         SendMessage(hWnd, EM_SETSEL, (WPARAM)from, (LPARAM)to);
1186     }
1187
1188     if ( scrollCaret )
1189     {
1190 #if wxUSE_RICHEDIT
1191         // richedit 3.0 (i.e. the version living in riched20.dll distributed
1192         // with Windows 2000 and beyond) doesn't honour EM_SCROLLCARET when
1193         // emulating richedit 2.0 unless the control has focus or ECO_NOHIDESEL
1194         // option is set (but it does work ok in richedit 1.0 mode...)
1195         //
1196         // so to make it work we either need to give focus to it here which
1197         // will probably create many problems (dummy focus events; window
1198         // containing the text control being brought to foreground
1199         // unexpectedly; ...) or to temporarily set ECO_NOHIDESEL which may
1200         // create other problems too -- and in fact it does because if we turn
1201         // on/off this style while appending the text to the control, the
1202         // vertical scrollbar never appears in it even if we append tons of
1203         // text and to work around this the only solution I found was to use
1204         // ES_DISABLENOSCROLL
1205         //
1206         // this is very ugly but I don't see any other way to make this work
1207         if ( GetRichVersion() > 1 )
1208         {
1209             if ( !HasFlag(wxTE_NOHIDESEL) )
1210             {
1211                 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1212                               ECOOP_OR, ECO_NOHIDESEL);
1213             }
1214             //else: everything is already ok
1215         }
1216 #endif // wxUSE_RICHEDIT
1217
1218         SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
1219
1220 #if wxUSE_RICHEDIT
1221         // restore ECO_NOHIDESEL if we changed it
1222         if ( GetRichVersion() > 1 && !HasFlag(wxTE_NOHIDESEL) )
1223         {
1224             ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1225                           ECOOP_AND, ~ECO_NOHIDESEL);
1226         }
1227 #endif // wxUSE_RICHEDIT
1228     }
1229 #else // Win16
1230     // WPARAM is 0: selection is scrolled into view
1231     SendMessage(hWnd, EM_SETSEL, (WPARAM)0, (LPARAM)MAKELONG(from, to));
1232 #endif // Win32/16
1233 }
1234
1235 // ----------------------------------------------------------------------------
1236 // Editing
1237 // ----------------------------------------------------------------------------
1238
1239 void wxTextCtrl::Replace(long from, long to, const wxString& value)
1240 {
1241     // Set selection and remove it
1242     DoSetSelection(from, to, FALSE /* don't scroll caret into view */);
1243
1244     SendMessage(GetHwnd(), EM_REPLACESEL,
1245 #ifdef __WIN32__
1246                 TRUE,
1247 #else
1248                 FALSE,
1249 #endif
1250                 (LPARAM)value.c_str());
1251 }
1252
1253 void wxTextCtrl::Remove(long from, long to)
1254 {
1255     Replace(from, to, wxEmptyString);
1256 }
1257
1258 bool wxTextCtrl::LoadFile(const wxString& file)
1259 {
1260     if ( wxTextCtrlBase::LoadFile(file) )
1261     {
1262         // update the size limit if needed
1263         AdjustSpaceLimit();
1264
1265         return TRUE;
1266     }
1267
1268     return FALSE;
1269 }
1270
1271 bool wxTextCtrl::IsModified() const
1272 {
1273     return SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0;
1274 }
1275
1276 // Makes 'unmodified'
1277 void wxTextCtrl::DiscardEdits()
1278 {
1279     SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0L);
1280 }
1281
1282 int wxTextCtrl::GetNumberOfLines() const
1283 {
1284     return (int)SendMessage(GetHwnd(), EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0);
1285 }
1286
1287 long wxTextCtrl::XYToPosition(long x, long y) const
1288 {
1289     // This gets the char index for the _beginning_ of this line
1290     long charIndex = SendMessage(GetHwnd(), EM_LINEINDEX, (WPARAM)y, (LPARAM)0);
1291
1292     return charIndex + x;
1293 }
1294
1295 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
1296 {
1297     HWND hWnd = GetHwnd();
1298
1299     // This gets the line number containing the character
1300     long lineNo;
1301 #if wxUSE_RICHEDIT
1302     if ( IsRich() )
1303     {
1304         lineNo = SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, (LPARAM)pos);
1305     }
1306     else
1307 #endif // wxUSE_RICHEDIT
1308     {
1309         lineNo = SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, 0);
1310     }
1311
1312     if ( lineNo == -1 )
1313     {
1314         // no such line
1315         return FALSE;
1316     }
1317
1318     // This gets the char index for the _beginning_ of this line
1319     long charIndex = SendMessage(hWnd, EM_LINEINDEX, (WPARAM)lineNo, (LPARAM)0);
1320     if ( charIndex == -1 )
1321     {
1322         return FALSE;
1323     }
1324
1325     // The X position must therefore be the different between pos and charIndex
1326     if ( x )
1327         *x = pos - charIndex;
1328     if ( y )
1329         *y = lineNo;
1330
1331     return TRUE;
1332 }
1333
1334 void wxTextCtrl::ShowPosition(long pos)
1335 {
1336     HWND hWnd = GetHwnd();
1337
1338     // To scroll to a position, we pass the number of lines and characters
1339     // to scroll *by*. This means that we need to:
1340     // (1) Find the line position of the current line.
1341     // (2) Find the line position of pos.
1342     // (3) Scroll by (pos - current).
1343     // For now, ignore the horizontal scrolling.
1344
1345     // Is this where scrolling is relative to - the line containing the caret?
1346     // Or is the first visible line??? Try first visible line.
1347 //    int currentLineLineNo1 = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)-1, (LPARAM)0L);
1348
1349     int currentLineLineNo = (int)SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, (WPARAM)0, (LPARAM)0L);
1350
1351     int specifiedLineLineNo = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, (LPARAM)0L);
1352
1353     int linesToScroll = specifiedLineLineNo - currentLineLineNo;
1354
1355     if (linesToScroll != 0)
1356       (void)SendMessage(hWnd, EM_LINESCROLL, (WPARAM)0, (LPARAM)linesToScroll);
1357 }
1358
1359 long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const
1360 {
1361     return ::SendMessage(GetHwnd(), EM_LINELENGTH, (WPARAM)pos, 0);
1362 }
1363
1364 int wxTextCtrl::GetLineLength(long lineNo) const
1365 {
1366     long pos = XYToPosition(0, lineNo);
1367
1368     return GetLengthOfLineContainingPos(pos);
1369 }
1370
1371 wxString wxTextCtrl::GetLineText(long lineNo) const
1372 {
1373     size_t len = (size_t)GetLineLength(lineNo) + 1;
1374
1375     // there must be at least enough place for the length WORD in the
1376     // buffer
1377     len += sizeof(WORD);
1378
1379     wxString str;
1380     {
1381         wxStringBufferLength tmp(str, len);
1382         wxChar *buf = tmp;
1383
1384         *(WORD *)buf = (WORD)len;
1385         len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf);
1386
1387 #if wxUSE_RICHEDIT
1388         if ( IsRich() )
1389         {
1390             // remove the '\r' returned by the rich edit control, the user code
1391             // should never see it
1392             if ( buf[len - 2] == _T('\r') && buf[len - 1] == _T('\n') )
1393             {
1394                 buf[len - 2] = _T('\n');
1395                 len--;
1396             }
1397         }
1398 #endif // wxUSE_RICHEDIT
1399
1400         // remove the '\n' at the end, if any (this is how this function is
1401         // supposed to work according to the docs)
1402         if ( buf[len - 1] == _T('\n') )
1403         {
1404             len--;
1405         }
1406
1407         buf[len] = 0;
1408         tmp.SetLength(len);
1409     }
1410
1411     return str;
1412 }
1413
1414 void wxTextCtrl::SetMaxLength(unsigned long len)
1415 {
1416     ::SendMessage(GetHwnd(), EM_LIMITTEXT, len, 0);
1417 }
1418
1419 // ----------------------------------------------------------------------------
1420 // Undo/redo
1421 // ----------------------------------------------------------------------------
1422
1423 void wxTextCtrl::Undo()
1424 {
1425     if (CanUndo())
1426     {
1427         ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1428     }
1429 }
1430
1431 void wxTextCtrl::Redo()
1432 {
1433     if (CanRedo())
1434     {
1435         // Same as Undo, since Undo undoes the undo, i.e. a redo.
1436         ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1437     }
1438 }
1439
1440 bool wxTextCtrl::CanUndo() const
1441 {
1442     return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1443 }
1444
1445 bool wxTextCtrl::CanRedo() const
1446 {
1447     return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1448 }
1449
1450 // ----------------------------------------------------------------------------
1451 // caret handling (Windows only)
1452 // ----------------------------------------------------------------------------
1453
1454 bool wxTextCtrl::ShowNativeCaret(bool show)
1455 {
1456     if ( show != m_isNativeCaretShown )
1457     {
1458         if ( !(show ? ::ShowCaret(GetHwnd()) : ::HideCaret(GetHwnd())) )
1459         {
1460             // not an error, may simply indicate that it's not shown/hidden
1461             // yet (i.e. it had been hidden/showh 2 times before)
1462             return false;
1463         }
1464
1465         m_isNativeCaretShown = show;
1466     }
1467
1468     return true;
1469 }
1470
1471 // ----------------------------------------------------------------------------
1472 // implemenation details
1473 // ----------------------------------------------------------------------------
1474
1475 void wxTextCtrl::Command(wxCommandEvent & event)
1476 {
1477     SetValue(event.GetString());
1478     ProcessCommand (event);
1479 }
1480
1481 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
1482 {
1483     // By default, load the first file into the text window.
1484     if (event.GetNumberOfFiles() > 0)
1485     {
1486         LoadFile(event.GetFiles()[0]);
1487     }
1488 }
1489
1490 // ----------------------------------------------------------------------------
1491 // kbd input processing
1492 // ----------------------------------------------------------------------------
1493
1494 bool wxTextCtrl::MSWShouldPreProcessMessage(WXMSG* pMsg)
1495 {
1496     MSG *msg = (MSG *)pMsg;
1497
1498     // check for our special keys here: if we don't do it and the parent frame
1499     // uses them as accelerators, they wouldn't work at all, so we disable
1500     // usual preprocessing for them
1501     if ( msg->message == WM_KEYDOWN )
1502     {
1503         WORD vkey = (WORD) msg->wParam;
1504         if ( (HIWORD(msg->lParam) & KF_ALTDOWN) == KF_ALTDOWN )
1505         {
1506             if ( vkey == VK_BACK )
1507                 return FALSE;
1508         }
1509         else // no Alt
1510         {
1511             // we want to process some Ctrl-foo and Shift-bar but no key
1512             // combinations without either Ctrl or Shift nor with both of them
1513             // pressed
1514             const int ctrl = wxIsCtrlDown(),
1515                       shift = wxIsShiftDown();
1516             switch ( ctrl + shift )
1517             {
1518                 default:
1519                     wxFAIL_MSG( _T("how many modifiers have we got?") );
1520                     // fall through
1521
1522                 case 0:
1523                 case 2:
1524                     break;
1525
1526                 case 1:
1527                     // either Ctrl or Shift pressed
1528                     if ( ctrl )
1529                     {
1530                         switch ( vkey )
1531                         {
1532                             case 'C':
1533                             case 'V':
1534                             case 'X':
1535                             case VK_INSERT:
1536                             case VK_DELETE:
1537                             case VK_HOME:
1538                             case VK_END:
1539                                 return FALSE;
1540                         }
1541                     }
1542                     else // Shift is pressed
1543                     {
1544                         if ( vkey == VK_INSERT || vkey == VK_DELETE )
1545                             return FALSE;
1546                     }
1547             }
1548         }
1549     }
1550
1551     return wxControl::MSWShouldPreProcessMessage(pMsg);
1552 }
1553
1554 void wxTextCtrl::OnChar(wxKeyEvent& event)
1555 {
1556     switch ( event.GetKeyCode() )
1557     {
1558         case WXK_RETURN:
1559             if ( !(m_windowStyle & wxTE_MULTILINE) )
1560             {
1561                 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1562                 InitCommandEvent(event);
1563                 event.SetString(GetValue());
1564                 if ( GetEventHandler()->ProcessEvent(event) )
1565                     return;
1566             }
1567             //else: multiline controls need Enter for themselves
1568
1569             break;
1570
1571         case WXK_TAB:
1572             // always produce navigation event - even if we process TAB
1573             // ourselves the fact that we got here means that the user code
1574             // decided to skip processing of this TAB - probably to let it
1575             // do its default job.
1576             {
1577                 wxNavigationKeyEvent eventNav;
1578                 eventNav.SetDirection(!event.ShiftDown());
1579                 eventNav.SetWindowChange(event.ControlDown());
1580                 eventNav.SetEventObject(this);
1581
1582                 if ( GetParent()->GetEventHandler()->ProcessEvent(eventNav) )
1583                     return;
1584             }
1585             break;
1586     }
1587
1588     // no, we didn't process it
1589     event.Skip();
1590 }
1591
1592 long wxTextCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
1593 {
1594     long lRc = wxTextCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
1595
1596     if ( nMsg == WM_GETDLGCODE )
1597     {
1598         // we always want the chars and the arrows: the arrows for navigation
1599         // and the chars because we want Ctrl-C to work even in a read only
1600         // control
1601         long lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
1602
1603         if ( IsEditable() )
1604         {
1605             // we may have several different cases:
1606             // 1. normal case: both TAB and ENTER are used for dlg navigation
1607             // 2. ctrl which wants TAB for itself: ENTER is used to pass to the
1608             //    next control in the dialog
1609             // 3. ctrl which wants ENTER for itself: TAB is used for dialog
1610             //    navigation
1611             // 4. ctrl which wants both TAB and ENTER: Ctrl-ENTER is used to go
1612             //    to the next control
1613
1614             // the multiline edit control should always get <Return> for itself
1615             if ( HasFlag(wxTE_PROCESS_ENTER) || HasFlag(wxTE_MULTILINE) )
1616                 lDlgCode |= DLGC_WANTMESSAGE;
1617
1618             if ( HasFlag(wxTE_PROCESS_TAB) )
1619                 lDlgCode |= DLGC_WANTTAB;
1620
1621             lRc |= lDlgCode;
1622         }
1623         else // !editable
1624         {
1625             // NB: use "=", not "|=" as the base class version returns the
1626             //     same flags is this state as usual (i.e. including
1627             //     DLGC_WANTMESSAGE). This is strange (how does it work in the
1628             //     native Win32 apps?) but for now live with it.
1629             lRc = lDlgCode;
1630         }
1631     }
1632
1633     return lRc;
1634 }
1635
1636 // ----------------------------------------------------------------------------
1637 // text control event processing
1638 // ----------------------------------------------------------------------------
1639
1640 bool wxTextCtrl::SendUpdateEvent()
1641 {
1642     // is event reporting suspended?
1643     if ( m_suppressNextUpdate )
1644     {
1645         // do process the next one
1646         m_suppressNextUpdate = FALSE;
1647
1648         return FALSE;
1649     }
1650
1651     wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, GetId());
1652     InitCommandEvent(event);
1653     event.SetString(GetValue());
1654
1655     return ProcessCommand(event);
1656 }
1657
1658 bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
1659 {
1660     switch ( param )
1661     {
1662         case EN_SETFOCUS:
1663         case EN_KILLFOCUS:
1664             {
1665                 wxFocusEvent event(param == EN_KILLFOCUS ? wxEVT_KILL_FOCUS
1666                                                          : wxEVT_SET_FOCUS,
1667                                    m_windowId);
1668                 event.SetEventObject(this);
1669                 GetEventHandler()->ProcessEvent(event);
1670             }
1671             break;
1672
1673         case EN_CHANGE:
1674             SendUpdateEvent();
1675             break;
1676
1677         case EN_MAXTEXT:
1678             // the text size limit has been hit -- try to increase it
1679             if ( !AdjustSpaceLimit() )
1680             {
1681                 wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, m_windowId);
1682                 InitCommandEvent(event);
1683                 event.SetString(GetValue());
1684                 ProcessCommand(event);
1685             }
1686             break;
1687
1688             // the other edit notification messages are not processed
1689         default:
1690             return FALSE;
1691     }
1692
1693     // processed
1694     return TRUE;
1695 }
1696
1697 WXHBRUSH wxTextCtrl::OnCtlColor(WXHDC pDC, WXHWND WXUNUSED(pWnd), WXUINT WXUNUSED(nCtlColor),
1698 #if wxUSE_CTL3D
1699                                WXUINT message,
1700                                WXWPARAM wParam,
1701                                WXLPARAM lParam
1702 #else
1703                                WXUINT WXUNUSED(message),
1704                                WXWPARAM WXUNUSED(wParam),
1705                                WXLPARAM WXUNUSED(lParam)
1706 #endif
1707     )
1708 {
1709 #if wxUSE_CTL3D
1710     if ( m_useCtl3D )
1711     {
1712         HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
1713         return (WXHBRUSH) hbrush;
1714     }
1715 #endif // wxUSE_CTL3D
1716
1717     HDC hdc = (HDC)pDC;
1718     wxColour colBack = GetBackgroundColour();
1719
1720     if (!IsEnabled() && (GetWindowStyle() & wxTE_MULTILINE) == 0)
1721         colBack = wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE);
1722
1723     ::SetBkColor(hdc, wxColourToRGB(colBack));
1724     ::SetTextColor(hdc, wxColourToRGB(GetForegroundColour()));
1725
1726     wxBrush *brush = wxTheBrushList->FindOrCreateBrush(colBack, wxSOLID);
1727
1728     return (WXHBRUSH)brush->GetResourceHandle();
1729 }
1730
1731 // In WIN16, need to override normal erasing because
1732 // Ctl3D doesn't use the wxWindows background colour.
1733 #ifdef __WIN16__
1734 void wxTextCtrl::OnEraseBackground(wxEraseEvent& event)
1735 {
1736     wxColour col(m_backgroundColour);
1737
1738 #if wxUSE_CTL3D
1739     if (m_useCtl3D)
1740         col = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
1741 #endif
1742
1743     RECT rect;
1744     ::GetClientRect(GetHwnd(), &rect);
1745
1746     COLORREF ref = wxColourToRGB(col);
1747     HBRUSH hBrush = ::CreateSolidBrush(ref);
1748     if ( !hBrush )
1749         wxLogLastError(wxT("CreateSolidBrush"));
1750
1751     HDC hdc = (HDC)event.GetDC()->GetHDC();
1752
1753     int mode = ::SetMapMode(hdc, MM_TEXT);
1754
1755     ::FillRect(hdc, &rect, hBrush);
1756     ::DeleteObject(hBrush);
1757     ::SetMapMode(hdc, mode);
1758
1759 }
1760 #endif // Win16
1761
1762 bool wxTextCtrl::AdjustSpaceLimit()
1763 {
1764 #ifndef __WIN16__
1765     unsigned int limit = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
1766
1767     // HACK: we try to automatically extend the limit for the amount of text
1768     //       to allow (interactively) entering more than 64Kb of text under
1769     //       Win9x but we shouldn't reset the text limit which was previously
1770     //       set explicitly with SetMaxLength()
1771     //
1772     //       we could solve this by storing the limit we set in wxTextCtrl but
1773     //       to save space we prefer to simply test here the actual limit
1774     //       value: we consider that SetMaxLength() can only be called for
1775     //       values < 32Kb
1776     if ( limit < 0x8000 )
1777     {
1778         // we've got more text than limit set by SetMaxLength()
1779         return FALSE;
1780     }
1781
1782     unsigned int len = ::GetWindowTextLength(GetHwnd());
1783     if ( len >= limit )
1784     {
1785         limit = len + 0x8000;    // 32Kb
1786
1787 #if wxUSE_RICHEDIT
1788         if ( IsRich() )
1789         {
1790             // as a nice side effect, this also allows passing limit > 64Kb
1791             ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, limit);
1792         }
1793         else
1794 #endif // wxUSE_RICHEDIT
1795         {
1796             if ( limit > 0xffff )
1797             {
1798                 // this will set it to a platform-dependent maximum (much more
1799                 // than 64Kb under NT)
1800                 limit = 0;
1801             }
1802
1803             ::SendMessage(GetHwnd(), EM_LIMITTEXT, limit, 0);
1804         }
1805     }
1806 #endif // !Win16
1807
1808     // we changed the limit
1809     return TRUE;
1810 }
1811
1812 bool wxTextCtrl::AcceptsFocus() const
1813 {
1814     // we don't want focus if we can't be edited unless we're a multiline
1815     // control because then it might be still nice to get focus from keyboard
1816     // to be able to scroll it without mouse
1817     return (IsEditable() || IsMultiLine()) && wxControl::AcceptsFocus();
1818 }
1819
1820 wxSize wxTextCtrl::DoGetBestSize() const
1821 {
1822     int cx, cy;
1823     wxGetCharSize(GetHWND(), &cx, &cy, &GetFont());
1824
1825     int wText = DEFAULT_ITEM_WIDTH;
1826
1827     int hText = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy);
1828     if ( m_windowStyle & wxTE_MULTILINE )
1829     {
1830         hText *= wxMax(GetNumberOfLines(), 5);
1831     }
1832     //else: for single line control everything is ok
1833
1834     return wxSize(wText, hText);
1835 }
1836
1837 // ----------------------------------------------------------------------------
1838 // standard handlers for standard edit menu events
1839 // ----------------------------------------------------------------------------
1840
1841 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1842 {
1843     Cut();
1844 }
1845
1846 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1847 {
1848     Copy();
1849 }
1850
1851 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1852 {
1853     Paste();
1854 }
1855
1856 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1857 {
1858     Undo();
1859 }
1860
1861 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1862 {
1863     Redo();
1864 }
1865
1866 void wxTextCtrl::OnDelete(wxCommandEvent& WXUNUSED(event))
1867 {
1868     long from, to;
1869     GetSelection(& from, & to);
1870     if (from != -1 && to != -1)
1871         Remove(from, to);
1872 }
1873
1874 void wxTextCtrl::OnSelectAll(wxCommandEvent& WXUNUSED(event))
1875 {
1876     SetSelection(-1, -1);
1877 }
1878
1879 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1880 {
1881     event.Enable( CanCut() );
1882 }
1883
1884 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1885 {
1886     event.Enable( CanCopy() );
1887 }
1888
1889 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1890 {
1891     event.Enable( CanPaste() );
1892 }
1893
1894 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1895 {
1896     event.Enable( CanUndo() );
1897 }
1898
1899 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1900 {
1901     event.Enable( CanRedo() );
1902 }
1903
1904 void wxTextCtrl::OnUpdateDelete(wxUpdateUIEvent& event)
1905 {
1906     long from, to;
1907     GetSelection(& from, & to);
1908     event.Enable(from != -1 && to != -1 && from != to && IsEditable()) ;
1909 }
1910
1911 void wxTextCtrl::OnUpdateSelectAll(wxUpdateUIEvent& event)
1912 {
1913     event.Enable(GetLastPosition() > 0);
1914 }
1915
1916 void wxTextCtrl::OnRightClick(wxMouseEvent& event)
1917 {
1918 #if wxUSE_RICHEDIT
1919     if (IsRich())
1920     {
1921         if (!m_privateContextMenu)
1922         {
1923             m_privateContextMenu = new wxMenu;
1924             m_privateContextMenu->Append(wxID_UNDO, _("&Undo"));
1925             m_privateContextMenu->Append(wxID_REDO, _("&Redo"));
1926             m_privateContextMenu->AppendSeparator();
1927             m_privateContextMenu->Append(wxID_CUT, _("Cu&t"));
1928             m_privateContextMenu->Append(wxID_COPY, _("&Copy"));
1929             m_privateContextMenu->Append(wxID_PASTE, _("&Paste"));
1930             m_privateContextMenu->Append(wxID_CLEAR, _("&Delete"));
1931             m_privateContextMenu->AppendSeparator();
1932             m_privateContextMenu->Append(wxID_SELECTALL, _("Select &All"));
1933         }
1934         PopupMenu(m_privateContextMenu, event.GetPosition());
1935         return;
1936     }
1937     else
1938 #endif
1939     event.Skip();
1940 }
1941
1942 void wxTextCtrl::OnSetFocus(wxFocusEvent& WXUNUSED(event))
1943 {
1944     // be sure the caret remains invisible if the user had hidden it
1945     if ( !m_isNativeCaretShown )
1946     {
1947         ::HideCaret(GetHwnd());
1948     }
1949 }
1950
1951 // the rest of the file only deals with the rich edit controls
1952 #if wxUSE_RICHEDIT
1953
1954 // ----------------------------------------------------------------------------
1955 // EN_LINK processing
1956 // ----------------------------------------------------------------------------
1957
1958 bool wxTextCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
1959 {
1960     NMHDR *hdr = (NMHDR* )lParam;
1961     switch ( hdr->code )
1962     {
1963        case EN_MSGFILTER:
1964             {
1965                 const MSGFILTER *msgf = (MSGFILTER *)lParam;
1966                 UINT msg = msgf->msg;
1967
1968                 // this is a bit crazy but richedit 1.0 sends us all mouse
1969                 // events _except_ WM_LBUTTONUP (don't ask me why) so we have
1970                 // generate the wxWin events for this message manually
1971                 //
1972                 // NB: in fact, this is still not totally correct as it does
1973                 //     send us WM_LBUTTONUP if the selection was cleared by the
1974                 //     last click -- so currently we get 2 events in this case,
1975                 //     but as I don't see any obvious way to check for this I
1976                 //     leave this code in place because it's still better than
1977                 //     not getting left up events at all
1978                 if ( msg == WM_LBUTTONUP )
1979                 {
1980                     WXUINT flags = msgf->wParam;
1981                     int x = GET_X_LPARAM(msgf->lParam),
1982                         y = GET_Y_LPARAM(msgf->lParam);
1983
1984                     HandleMouseEvent(msg, x, y, flags);
1985                 }
1986             }
1987
1988             // return TRUE to process the event (and FALSE to ignore it)
1989             return TRUE;
1990
1991         case EN_LINK:
1992             {
1993                 const ENLINK *enlink = (ENLINK *)hdr;
1994
1995                 switch ( enlink->msg )
1996                 {
1997                     case WM_SETCURSOR:
1998                         // ok, so it is hardcoded - do we really nee to
1999                         // customize it?
2000                         ::SetCursor(GetHcursorOf(wxCursor(wxCURSOR_HAND)));
2001                         *result = TRUE;
2002                         break;
2003
2004                     case WM_MOUSEMOVE:
2005                     case WM_LBUTTONDOWN:
2006                     case WM_LBUTTONUP:
2007                     case WM_LBUTTONDBLCLK:
2008                     case WM_RBUTTONDOWN:
2009                     case WM_RBUTTONUP:
2010                     case WM_RBUTTONDBLCLK:
2011                         // send a mouse event
2012                         {
2013                             static const wxEventType eventsMouse[] =
2014                             {
2015                                 wxEVT_MOTION,
2016                                 wxEVT_LEFT_DOWN,
2017                                 wxEVT_LEFT_UP,
2018                                 wxEVT_LEFT_DCLICK,
2019                                 wxEVT_RIGHT_DOWN,
2020                                 wxEVT_RIGHT_UP,
2021                                 wxEVT_RIGHT_DCLICK,
2022                             };
2023
2024                             // the event ids are consecutive
2025                             wxMouseEvent
2026                                 evtMouse(eventsMouse[enlink->msg - WM_MOUSEMOVE]);
2027
2028                             InitMouseEvent(evtMouse,
2029                                            GET_X_LPARAM(enlink->lParam),
2030                                            GET_Y_LPARAM(enlink->lParam),
2031                                            enlink->wParam);
2032
2033                             wxTextUrlEvent event(m_windowId, evtMouse,
2034                                                  enlink->chrg.cpMin,
2035                                                  enlink->chrg.cpMax);
2036
2037                             InitCommandEvent(event);
2038
2039                             *result = ProcessCommand(event);
2040                         }
2041                         break;
2042                 }
2043             }
2044             return TRUE;
2045     }
2046
2047     // not processed, leave it to the base class
2048     return wxTextCtrlBase::MSWOnNotify(idCtrl, lParam, result);
2049 }
2050
2051 // ----------------------------------------------------------------------------
2052 // colour setting for the rich edit controls
2053 // ----------------------------------------------------------------------------
2054
2055 bool wxTextCtrl::SetBackgroundColour(const wxColour& colour)
2056 {
2057     if ( !wxTextCtrlBase::SetBackgroundColour(colour) )
2058     {
2059         // colour didn't really change
2060         return FALSE;
2061     }
2062
2063     if ( IsRich() )
2064     {
2065         // rich edit doesn't use WM_CTLCOLOR, hence we need to send
2066         // EM_SETBKGNDCOLOR additionally
2067         ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour));
2068     }
2069
2070     return TRUE;
2071 }
2072
2073 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
2074 {
2075     if ( !wxTextCtrlBase::SetForegroundColour(colour) )
2076     {
2077         // colour didn't really change
2078         return FALSE;
2079     }
2080
2081     if ( IsRich() )
2082     {
2083         // change the colour of everything
2084         CHARFORMAT cf;
2085         wxZeroMemory(cf);
2086         cf.cbSize = sizeof(cf);
2087         cf.dwMask = CFM_COLOR;
2088         cf.crTextColor = wxColourToRGB(colour);
2089         ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf);
2090     }
2091
2092     return TRUE;
2093 }
2094
2095 // ----------------------------------------------------------------------------
2096 // styling support for rich edit controls
2097 // ----------------------------------------------------------------------------
2098
2099 #if wxUSE_RICHEDIT
2100
2101 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
2102 {
2103     if ( !IsRich() )
2104     {
2105         // can't do it with normal text control
2106         return FALSE;
2107     }
2108
2109     // the richedit 1.0 doesn't handle setting background colour, so don't
2110     // even try to do anything if it's the only thing we want to change
2111     if ( m_verRichEdit == 1 && !style.HasFont() && !style.HasTextColour() &&
2112         !style.HasLeftIndent() && !style.HasRightIndent() && !style.HasAlignment() &&
2113         !style.HasTabs() )
2114     {
2115         // nothing to do: return TRUE if there was really nothing to do and
2116         // FALSE if we failed to set bg colour
2117         return !style.HasBackgroundColour();
2118     }
2119
2120     // order the range if needed
2121     if ( start > end )
2122     {
2123         long tmp = start;
2124         start = end;
2125         end = tmp;
2126     }
2127
2128     // we can only change the format of the selection, so select the range we
2129     // want and restore the old selection later
2130     long startOld, endOld;
2131     GetSelection(&startOld, &endOld);
2132
2133     // but do we really have to change the selection?
2134     bool changeSel = start != startOld || end != endOld;
2135
2136     if ( changeSel )
2137     {
2138         DoSetSelection(start, end, FALSE /* don't scroll caret into view */);
2139     }
2140
2141     // initialize CHARFORMAT struct
2142 #if wxUSE_RICHEDIT2
2143     CHARFORMAT2 cf;
2144 #else
2145     CHARFORMAT cf;
2146 #endif
2147
2148     wxZeroMemory(cf);
2149
2150     // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2151     // CHARFORMAT in that case
2152 #if wxUSE_RICHEDIT2
2153     if ( m_verRichEdit == 1 )
2154     {
2155         // this is the only thing the control is going to grok
2156         cf.cbSize = sizeof(CHARFORMAT);
2157     }
2158     else
2159 #endif
2160     {
2161         // CHARFORMAT or CHARFORMAT2
2162         cf.cbSize = sizeof(cf);
2163     }
2164
2165     if ( style.HasFont() )
2166     {
2167         // VZ: CFM_CHARSET doesn't seem to do anything at all in RichEdit 2.0
2168         //     but using it doesn't seem to hurt neither so leaving it for now
2169
2170         cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET |
2171                      CFM_ITALIC | CFM_BOLD | CFM_UNDERLINE;
2172
2173         // fill in data from LOGFONT but recalculate lfHeight because we need
2174         // the real height in twips and not the negative number which
2175         // wxFillLogFont() returns (this is correct in general and works with
2176         // the Windows font mapper, but not here)
2177         LOGFONT lf;
2178         wxFillLogFont(&lf, &style.GetFont());
2179         cf.yHeight = 20*style.GetFont().GetPointSize(); // 1 pt = 20 twips
2180         cf.bCharSet = lf.lfCharSet;
2181         cf.bPitchAndFamily = lf.lfPitchAndFamily;
2182         wxStrncpy( cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName) );
2183
2184         // also deal with underline/italic/bold attributes: note that we must
2185         // always set CFM_ITALIC &c bits in dwMask, even if we don't set the
2186         // style to allow clearing it
2187         if ( lf.lfItalic )
2188         {
2189             cf.dwEffects |= CFE_ITALIC;
2190         }
2191
2192         if ( lf.lfWeight == FW_BOLD )
2193         {
2194             cf.dwEffects |= CFE_BOLD;
2195         }
2196
2197         if ( lf.lfUnderline )
2198         {
2199             cf.dwEffects |= CFE_UNDERLINE;
2200         }
2201
2202         // strikeout fonts are not supported by wxWindows
2203     }
2204
2205     if ( style.HasTextColour() )
2206     {
2207         cf.dwMask |= CFM_COLOR;
2208         cf.crTextColor = wxColourToRGB(style.GetTextColour());
2209     }
2210
2211 #if wxUSE_RICHEDIT2
2212     if ( m_verRichEdit != 1 && style.HasBackgroundColour() )
2213     {
2214         cf.dwMask |= CFM_BACKCOLOR;
2215         cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
2216     }
2217 #endif // wxUSE_RICHEDIT2
2218
2219     // do format the selection
2220     bool ok = ::SendMessage(GetHwnd(), EM_SETCHARFORMAT,
2221                             SCF_SELECTION, (LPARAM)&cf) != 0;
2222     if ( !ok )
2223     {
2224         wxLogDebug(_T("SendMessage(EM_SETCHARFORMAT, SCF_SELECTION) failed"));
2225     }
2226
2227     // now do the paragraph formatting
2228     PARAFORMAT2 pf;
2229     wxZeroMemory(pf);
2230     // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2231     // PARAFORMAT in that case
2232 #if wxUSE_RICHEDIT2
2233     if ( m_verRichEdit == 1 )
2234     {
2235         // this is the only thing the control is going to grok
2236         pf.cbSize = sizeof(PARAFORMAT);
2237     }
2238     else
2239 #endif
2240     {
2241         // PARAFORMAT or PARAFORMAT2
2242         pf.cbSize = sizeof(pf);
2243     }
2244
2245     if (style.HasAlignment())
2246     {
2247         pf.dwMask |= PFM_ALIGNMENT;
2248         if (style.GetAlignment() == wxTEXT_ALIGNMENT_RIGHT)
2249             pf.wAlignment = PFA_RIGHT;
2250         else if (style.GetAlignment() == wxTEXT_ALIGNMENT_CENTRE)
2251             pf.wAlignment = PFA_CENTER;
2252         else if (style.GetAlignment() == wxTEXT_ALIGNMENT_JUSTIFIED)
2253             pf.wAlignment = PFA_JUSTIFY;
2254         else
2255             pf.wAlignment = PFA_LEFT;
2256     }
2257
2258     if (style.HasLeftIndent())
2259     {
2260         pf.dwMask |= PFM_STARTINDENT;
2261
2262         // Convert from 1/10 mm to TWIPS
2263         pf.dxStartIndent = (int) (((double) style.GetLeftIndent()) * mm2twips / 10.0) ;
2264
2265         // TODO: do we need to specify dxOffset?
2266     }
2267
2268     if (style.HasRightIndent())
2269     {
2270         pf.dwMask |= PFM_RIGHTINDENT;
2271
2272         // Convert from 1/10 mm to TWIPS
2273         pf.dxRightIndent = (int) (((double) style.GetRightIndent()) * mm2twips / 10.0) ;
2274     }
2275
2276     if (style.HasTabs())
2277     {
2278         pf.dwMask |= PFM_TABSTOPS;
2279
2280         const wxArrayInt& tabs = style.GetTabs();
2281
2282         pf.cTabCount = wxMin(tabs.GetCount(), MAX_TAB_STOPS);
2283         size_t i;
2284         for (i = 0; i < (size_t) pf.cTabCount; i++)
2285         {
2286             // Convert from 1/10 mm to TWIPS
2287             pf.rgxTabs[i] = (int) (((double) tabs[i]) * mm2twips / 10.0) ;
2288         }
2289     }
2290
2291     if (pf.dwMask != 0)
2292     {
2293         // do format the selection
2294         bool ok = ::SendMessage(GetHwnd(), EM_SETPARAFORMAT,
2295             0, (LPARAM) &pf) != 0;
2296         if ( !ok )
2297         {
2298             wxLogDebug(_T("SendMessage(EM_SETPARAFORMAT, 0) failed"));
2299         }
2300     }
2301
2302     if ( changeSel )
2303     {
2304         // restore the original selection
2305         DoSetSelection(startOld, endOld, FALSE);
2306     }
2307
2308     return ok;
2309 }
2310
2311 bool wxTextCtrl::SetDefaultStyle(const wxTextAttr& style)
2312 {
2313     if ( !wxTextCtrlBase::SetDefaultStyle(style) )
2314         return FALSE;
2315
2316     // we have to do this or the style wouldn't apply for the text typed by the
2317     // user
2318     long posLast = GetLastPosition();
2319     SetStyle(posLast, posLast, m_defaultStyle);
2320
2321     return TRUE;
2322 }
2323
2324 bool wxTextCtrl::GetStyle(long position, wxTextAttr& style)
2325 {
2326     if ( !IsRich() )
2327     {
2328         // can't do it with normal text control
2329         return FALSE;
2330     }
2331
2332     // initialize CHARFORMAT struct
2333 #if wxUSE_RICHEDIT2
2334     CHARFORMAT2 cf;
2335 #else
2336     CHARFORMAT cf;
2337 #endif
2338
2339     wxZeroMemory(cf);
2340
2341     // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2342     // CHARFORMAT in that case
2343 #if wxUSE_RICHEDIT2
2344     if ( m_verRichEdit == 1 )
2345     {
2346         // this is the only thing the control is going to grok
2347         cf.cbSize = sizeof(CHARFORMAT);
2348     }
2349     else
2350 #endif
2351     {
2352         // CHARFORMAT or CHARFORMAT2
2353         cf.cbSize = sizeof(cf);
2354     }
2355     // we can only change the format of the selection, so select the range we
2356     // want and restore the old selection later
2357     long startOld, endOld;
2358     GetSelection(&startOld, &endOld);
2359
2360     // but do we really have to change the selection?
2361     bool changeSel = position != startOld || position != endOld;
2362
2363     if ( changeSel )
2364     {
2365         DoSetSelection(position, position, FALSE /* don't scroll caret into view */);
2366     }
2367
2368     // get the selection formatting
2369     (void) ::SendMessage(GetHwnd(), EM_GETCHARFORMAT,
2370                             SCF_SELECTION, (LPARAM)&cf) ;
2371
2372     LOGFONT lf;
2373     lf.lfHeight = cf.yHeight;
2374     lf.lfWidth = 0;
2375     lf.lfCharSet = ANSI_CHARSET; // FIXME: how to get correct charset?
2376     lf.lfClipPrecision = 0;
2377     lf.lfEscapement = 0;
2378     wxStrcpy(lf.lfFaceName, cf.szFaceName);
2379     if (cf.dwEffects & CFE_ITALIC)
2380         lf.lfItalic = TRUE;
2381     lf.lfOrientation = 0;
2382     lf.lfPitchAndFamily = cf.bPitchAndFamily;
2383     lf.lfQuality = 0;
2384     if (cf.dwEffects & CFE_STRIKEOUT)
2385         lf.lfStrikeOut = TRUE;
2386     if (cf.dwEffects & CFE_UNDERLINE)
2387         lf.lfUnderline = TRUE;
2388     if (cf.dwEffects & CFE_BOLD)
2389         lf.lfWeight = FW_BOLD;
2390
2391     wxFont font = wxCreateFontFromLogFont(& lf);
2392     if (font.Ok())
2393     {
2394         style.SetFont(font);
2395     }
2396     style.SetTextColour(wxColour(cf.crTextColor));
2397
2398 #if wxUSE_RICHEDIT2
2399     if ( m_verRichEdit != 1 )
2400     {
2401         // cf.dwMask |= CFM_BACKCOLOR;
2402         style.SetBackgroundColour(wxColour(cf.crBackColor));
2403     }
2404 #endif // wxUSE_RICHEDIT2
2405
2406     // now get the paragraph formatting
2407     PARAFORMAT2 pf;
2408     wxZeroMemory(pf);
2409     // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2410     // PARAFORMAT in that case
2411 #if wxUSE_RICHEDIT2
2412     if ( m_verRichEdit == 1 )
2413     {
2414         // this is the only thing the control is going to grok
2415         pf.cbSize = sizeof(PARAFORMAT);
2416     }
2417     else
2418 #endif
2419     {
2420         // PARAFORMAT or PARAFORMAT2
2421         pf.cbSize = sizeof(pf);
2422     }
2423
2424     // do format the selection
2425     (void) ::SendMessage(GetHwnd(), EM_GETPARAFORMAT, 0, (LPARAM) &pf) ;
2426
2427     style.SetLeftIndent( (int) ((double) pf.dxStartIndent * twips2mm * 10.0) );
2428     style.SetRightIndent( (int) ((double) pf.dxRightIndent * twips2mm * 10.0) );
2429
2430     if (pf.wAlignment == PFA_CENTER)
2431         style.SetAlignment(wxTEXT_ALIGNMENT_CENTRE);
2432     else if (pf.wAlignment == PFA_RIGHT)
2433         style.SetAlignment(wxTEXT_ALIGNMENT_RIGHT);
2434     else if (pf.wAlignment == PFA_JUSTIFY)
2435         style.SetAlignment(wxTEXT_ALIGNMENT_JUSTIFIED);
2436     else
2437         style.SetAlignment(wxTEXT_ALIGNMENT_LEFT);
2438
2439     wxArrayInt tabStops;
2440     size_t i;
2441     for (i = 0; i < (size_t) pf.cTabCount; i++)
2442     {
2443         tabStops[i] = (int) ((double) (pf.rgxTabs[i] & 0xFFFF) * twips2mm * 10.0) ;
2444     }
2445
2446     if ( changeSel )
2447     {
2448         // restore the original selection
2449         DoSetSelection(startOld, endOld, FALSE);
2450     }
2451
2452     return TRUE;
2453 }
2454
2455 #endif
2456
2457 // ----------------------------------------------------------------------------
2458 // wxRichEditModule
2459 // ----------------------------------------------------------------------------
2460
2461 bool wxRichEditModule::OnInit()
2462 {
2463     // don't do anything - we will load it when needed
2464     return TRUE;
2465 }
2466
2467 void wxRichEditModule::OnExit()
2468 {
2469     for ( size_t i = 0; i < WXSIZEOF(ms_hRichEdit); i++ )
2470     {
2471         if ( ms_hRichEdit[i] )
2472         {
2473             ::FreeLibrary(ms_hRichEdit[i]);
2474             ms_hRichEdit[i] = NULL;
2475         }
2476     }
2477 }
2478
2479 /* static */
2480 bool wxRichEditModule::Load(int version)
2481 {
2482     // we don't support loading richedit 3.0 as I don't know how to distinguish
2483     // it from 2.0 anyhow
2484     wxCHECK_MSG( version == 1 || version == 2, FALSE,
2485                  _T("incorrect richedit control version requested") );
2486
2487     // make it the index in the array
2488     version--;
2489
2490     if ( ms_hRichEdit[version] == (HINSTANCE)-1 )
2491     {
2492         // we had already tried to load it and failed
2493         return FALSE;
2494     }
2495
2496     if ( ms_hRichEdit[version] )
2497     {
2498         // we've already got this one
2499         return TRUE;
2500     }
2501
2502     wxString dllname = version ? _T("riched20") : _T("riched32");
2503     dllname += _T(".dll");
2504
2505     ms_hRichEdit[version] = ::LoadLibrary(dllname);
2506
2507     if ( !ms_hRichEdit[version] )
2508     {
2509         wxLogSysError(_("Could not load Rich Edit DLL '%s'"), dllname.c_str());
2510
2511         ms_hRichEdit[version] = (HINSTANCE)-1;
2512
2513         return FALSE;
2514     }
2515
2516     return TRUE;
2517 }
2518
2519 #endif // wxUSE_RICHEDIT
2520
2521 #endif // wxUSE_TEXTCTRL