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 #if wxUSE_UNICODE_MSLU
 690     #define UNUSED_IF_MSLU(param)
 691 #else
 692     #define UNUSED_IF_MSLU(param) param
 693 #endif
 694
 695 bool
 696 wxTextCtrl::StreamIn(const wxString& value,
 697                      wxFontEncoding UNUSED_IF_MSLU(encoding),
 698                      bool selectionOnly)
 699 {
 700 #if wxUSE_UNICODE_MSLU
 701     const wchar_t *wpc = value.c_str();
 702 #else // !wxUSE_UNICODE_MSLU
 703     wxCSConv conv(encoding);
 704
 705     const size_t len = conv.MB2WC(NULL, value, value.length());
 706
 707 #if wxUSE_WCHAR_T
 708     wxWCharBuffer wchBuf(len);
 709     wchar_t *wpc = wchBuf.data();
 710 #else
 711     wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
 712     wchar_t *wpc = wchBuf;
 713 #endif
 714
 715     conv.MB2WC(wpc, value, value.length());
 716 #endif // wxUSE_UNICODE_MSLU
 717
 718     // finally, stream it in the control
 719     EDITSTREAM eds;
 720     wxZeroMemory(eds);
 721     eds.dwCookie = (DWORD)&wpc;
 722     // the cast below is needed for broken (very) old mingw32 headers
 723     eds.pfnCallback = (EDITSTREAMCALLBACK)wxRichEditStreamIn;
 724
 725     // we're going to receive 2 EN_CHANGE notifications if we got any selection
 726     // (same problem as in DoWriteText())
 727     if ( selectionOnly && HasSelection() )
 728     {
 729         // so suppress one of them
 730         m_suppressNextUpdate = TRUE;
 731     }
 732
 733     ::SendMessage(GetHwnd(), EM_STREAMIN,
 734                   SF_TEXT |
 735                   SF_UNICODE |
 736                   (selectionOnly ? SFF_SELECTION : 0),
 737                   (LPARAM)&eds);
 738
 739     if ( eds.dwError )
 740     {
 741         wxLogLastError(_T("EM_STREAMIN"));
 742     }
 743
 744 #if !wxUSE_WCHAR_T
 745     free(wchBuf);
 746 #endif // !wxUSE_WCHAR_T
 747
 748     return TRUE;
 749 }
 750
 751 #if !wxUSE_UNICODE_MSLU
 752
 753 wxString
 754 wxTextCtrl::StreamOut(wxFontEncoding encoding, bool selectionOnly) const
 755 {
 756     wxString out;
 757
 758     const int len = GetWindowTextLength(GetHwnd());
 759
 760 #if wxUSE_WCHAR_T
 761     wxWCharBuffer wchBuf(len);
 762     wchar_t *wpc = wchBuf.data();
 763 #else
 764     wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
 765     wchar_t *wpc = wchBuf;
 766 #endif
 767
 768     EDITSTREAM eds;
 769     wxZeroMemory(eds);
 770     eds.dwCookie = (DWORD)&wpc;
 771     eds.pfnCallback = wxRichEditStreamOut;
 772
 773     ::SendMessage
 774       (
 775         GetHwnd(),
 776         EM_STREAMOUT,
 777         SF_TEXT | SF_UNICODE | (selectionOnly ? SFF_SELECTION : 0),
 778         (LPARAM)&eds
 779       );
 780
 781     if ( eds.dwError )
 782     {
 783         wxLogLastError(_T("EM_STREAMOUT"));
 784     }
 785     else // streamed out ok
 786     {
 787         // now convert to the given encoding (this is a lossful conversion but
 788         // what else can we do)
 789         wxCSConv conv(encoding);
 790         size_t lenNeeded = conv.WC2MB(NULL, wchBuf, len);
 791         if ( lenNeeded )
 792         {
 793             conv.WC2MB(wxStringBuffer(out, lenNeeded), wchBuf, len);
 794         }
 795     }
 796
 797 #if !wxUSE_WCHAR_T
 798     free(wchBuf);
 799 #endif // !wxUSE_WCHAR_T
 800
 801     return out;
 802 }
 803
 804 #endif // !wxUSE_UNICODE_MSLU
 805
 806 #endif // wxUSE_RICHEDIT
 807
 808 void wxTextCtrl::WriteText(const wxString& value)
 809 {
 810     DoWriteText(value);
 811 }
 812
 813 void wxTextCtrl::DoWriteText(const wxString& value, bool selectionOnly)
 814 {
 815     wxString valueDos;
 816     if ( m_windowStyle & wxTE_MULTILINE )
 817         valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
 818     else
 819         valueDos = value;
 820
 821 #if wxUSE_RICHEDIT
 822     // there are several complications with the rich edit controls here
 823     bool done = FALSE;
 824     if ( IsRich() )
 825     {
 826         // first, ensure that the new text will be in the default style
 827         if ( !m_defaultStyle.IsDefault() )
 828         {
 829             long start, end;
 830             GetSelection(&start, &end);
 831             SetStyle(start, end, m_defaultStyle);
 832         }
 833
 834 #if wxUSE_UNICODE_MSLU
 835         // RichEdit doesn't have Unicode version of EM_REPLACESEL on Win9x,
 836         // but EM_STREAMIN works
 837         if ( wxUsingUnicowsDll() && GetRichVersion() > 1 )
 838         {
 839            done = StreamIn(valueDos, wxFONTENCODING_SYSTEM, selectionOnly);
 840         }
 841 #endif // wxUSE_UNICODE_MSLU
 842
 843 #if !wxUSE_UNICODE
 844         // next check if the text we're inserting must be shown in a non
 845         // default charset -- this only works for RichEdit > 1.0
 846         if ( GetRichVersion() > 1 )
 847         {
 848             wxFont font = m_defaultStyle.GetFont();
 849             if ( !font.Ok() )
 850                 font = GetFont();
 851
 852             if ( font.Ok() )
 853             {
 854                wxFontEncoding encoding = font.GetEncoding();
 855                if ( encoding != wxFONTENCODING_SYSTEM )
 856                {
 857                    // we have to use EM_STREAMIN to force richedit control 2.0+
 858                    // to show any text in the non default charset -- otherwise
 859                    // it thinks it knows better than we do and always shows it
 860                    // in the default one
 861                    done = StreamIn(valueDos, encoding, selectionOnly);
 862                }
 863             }
 864         }
 865 #endif // !wxUSE_UNICODE
 866     }
 867
 868     if ( !done )
 869 #endif // wxUSE_RICHEDIT
 870     {
 871         // in some cases we get 2 EN_CHANGE notifications after the SendMessage
 872         // call below which is confusing for the client code and so should be
 873         // avoided
 874         //
 875         // these cases are: (a) plain EDIT controls if EM_REPLACESEL is used
 876         // and there is a non empty selection currently and (b) rich text
 877         // controls in any case
 878         if (
 879 #if wxUSE_RICHEDIT
 880             IsRich() ||
 881 #endif // wxUSE_RICHEDIT
 882             (selectionOnly && HasSelection()) )
 883         {
 884             m_suppressNextUpdate = TRUE;
 885         }
 886
 887         ::SendMessage(GetHwnd(), selectionOnly ? EM_REPLACESEL : WM_SETTEXT,
 888                       0, (LPARAM)valueDos.c_str());
 889
 890         // OTOH, non rich text controls don't generate any events at all when
 891         // we use WM_SETTEXT -- have to emulate them here
 892         if ( !selectionOnly
 893 #if wxUSE_RICHEDIT
 894                 && !IsRich()
 895 #endif // wxUSE_RICHEDIT
 896            )
 897         {
 898             // Windows already sends an update event for single-line
 899             // controls.
 900             if ( m_windowStyle & wxTE_MULTILINE )
 901                 SendUpdateEvent();
 902         }
 903     }
 904
 905     AdjustSpaceLimit();
 906 }
 907
 908 void wxTextCtrl::AppendText(const wxString& text)
 909 {
 910     SetInsertionPointEnd();
 911
 912     WriteText(text);
 913
 914 #if wxUSE_RICHEDIT
 915     if ( IsMultiLine() && GetRichVersion() > 1 )
 916     {
 917         // setting the caret to the end and showing it simply doesn't work for
 918         // RichEdit 2.0 -- force it to still do what we want
 919         ::SendMessage(GetHwnd(), EM_LINESCROLL, 0, GetNumberOfLines());
 920     }
 921 #endif // wxUSE_RICHEDIT
 922 }
 923
 924 void wxTextCtrl::Clear()
 925 {
 926     ::SetWindowText(GetHwnd(), wxEmptyString);
 927
 928 #if wxUSE_RICHEDIT
 929     if ( !IsRich() )
 930 #endif // wxUSE_RICHEDIT
 931     {
 932         // rich edit controls send EN_UPDATE from WM_SETTEXT handler themselves
 933         // but the normal ones don't -- make Clear() behaviour consistent by
 934         // always sending this event
 935
 936         // Windows already sends an update event for single-line
 937         // controls.
 938         if ( m_windowStyle & wxTE_MULTILINE )
 939             SendUpdateEvent();
 940     }
 941 }
 942
 943 #ifdef __WIN32__
 944
 945 bool wxTextCtrl::EmulateKeyPress(const wxKeyEvent& event)
 946 {
 947     SetFocus();
 948
 949     size_t lenOld = GetValue().length();
 950
 951     wxUint32 code = event.GetRawKeyCode();
 952     ::keybd_event(code, 0, 0 /* key press */, 0);
 953     ::keybd_event(code, 0, KEYEVENTF_KEYUP, 0);
 954
 955     // assume that any alphanumeric key changes the total number of characters
 956     // in the control - this should work in 99% of cases
 957     return GetValue().length() != lenOld;
 958 }
 959
 960 #endif // __WIN32__
 961
 962 // ----------------------------------------------------------------------------
 963 // Clipboard operations
 964 // ----------------------------------------------------------------------------
 965
 966 void wxTextCtrl::Copy()
 967 {
 968     if (CanCopy())
 969     {
 970         ::SendMessage(GetHwnd(), WM_COPY, 0, 0L);
 971     }
 972 }
 973
 974 void wxTextCtrl::Cut()
 975 {
 976     if (CanCut())
 977     {
 978         ::SendMessage(GetHwnd(), WM_CUT, 0, 0L);
 979     }
 980 }
 981
 982 void wxTextCtrl::Paste()
 983 {
 984     if (CanPaste())
 985     {
 986         ::SendMessage(GetHwnd(), WM_PASTE, 0, 0L);
 987     }
 988 }
 989
 990 bool wxTextCtrl::HasSelection() const
 991 {
 992     long from, to;
 993     GetSelection(&from, &to);
 994     return from != to;
 995 }
 996
 997 bool wxTextCtrl::CanCopy() const
 998 {
 999     // Can copy if there's a selection
1000     return HasSelection();
1001 }
1002
1003 bool wxTextCtrl::CanCut() const
1004 {
1005     return CanCopy() && IsEditable();
1006 }
1007
1008 bool wxTextCtrl::CanPaste() const
1009 {
1010     if ( !IsEditable() )
1011         return FALSE;
1012
1013 #if wxUSE_RICHEDIT
1014     if ( IsRich() )
1015     {
1016         UINT cf = 0; // 0 == any format
1017
1018         return ::SendMessage(GetHwnd(), EM_CANPASTE, cf, 0) != 0;
1019     }
1020 #endif // wxUSE_RICHEDIT
1021
1022     // Standard edit control: check for straight text on clipboard
1023     if ( !::OpenClipboard(GetHwndOf(wxTheApp->GetTopWindow())) )
1024         return FALSE;
1025
1026     bool isTextAvailable = ::IsClipboardFormatAvailable(CF_TEXT) != 0;
1027     ::CloseClipboard();
1028
1029     return isTextAvailable;
1030 }
1031
1032 // ----------------------------------------------------------------------------
1033 // Accessors
1034 // ----------------------------------------------------------------------------
1035
1036 void wxTextCtrl::SetEditable(bool editable)
1037 {
1038     HWND hWnd = GetHwnd();
1039     SendMessage(hWnd, EM_SETREADONLY, (WPARAM)!editable, (LPARAM)0L);
1040 }
1041
1042 void wxTextCtrl::SetInsertionPoint(long pos)
1043 {
1044     DoSetSelection(pos, pos);
1045 }
1046
1047 void wxTextCtrl::SetInsertionPointEnd()
1048 {
1049     // we must not do anything if the caret is already there because calling
1050     // SetInsertionPoint() thaws the controls if Freeze() had been called even
1051     // if it doesn't actually move the caret anywhere and so the simple fact of
1052     // doing it results in horrible flicker when appending big amounts of text
1053     // to the control in a few chunks (see DoAddText() test in the text sample)
1054     if ( GetInsertionPoint() == GetLastPosition() )
1055         return;
1056
1057     long pos;
1058
1059 #if wxUSE_RICHEDIT
1060     if ( m_verRichEdit == 1 )
1061     {
1062         // we don't have to waste time calling GetLastPosition() in this case
1063         pos = -1;
1064     }
1065     else // !RichEdit 1.0
1066 #endif // wxUSE_RICHEDIT
1067     {
1068         pos = GetLastPosition();
1069     }
1070
1071     SetInsertionPoint(pos);
1072 }
1073
1074 long wxTextCtrl::GetInsertionPoint() const
1075 {
1076 #if wxUSE_RICHEDIT
1077     if ( IsRich() )
1078     {
1079         CHARRANGE range;
1080         range.cpMin = 0;
1081         range.cpMax = 0;
1082         SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
1083         return range.cpMin;
1084     }
1085 #endif // wxUSE_RICHEDIT
1086
1087     DWORD Pos = (DWORD)SendMessage(GetHwnd(), EM_GETSEL, 0, 0L);
1088     return Pos & 0xFFFF;
1089 }
1090
1091 long wxTextCtrl::GetLastPosition() const
1092 {
1093     int numLines = GetNumberOfLines();
1094     long posStartLastLine = XYToPosition(0, numLines - 1);
1095
1096     long lenLastLine = GetLengthOfLineContainingPos(posStartLastLine);
1097
1098     return posStartLastLine + lenLastLine;
1099 }
1100
1101 // If the return values from and to are the same, there is no
1102 // selection.
1103 void wxTextCtrl::GetSelection(long* from, long* to) const
1104 {
1105 #if wxUSE_RICHEDIT
1106     if ( IsRich() )
1107     {
1108         CHARRANGE charRange;
1109         ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &charRange);
1110
1111         *from = charRange.cpMin;
1112         *to = charRange.cpMax;
1113     }
1114     else
1115 #endif // !wxUSE_RICHEDIT
1116     {
1117         DWORD dwStart, dwEnd;
1118         ::SendMessage(GetHwnd(), EM_GETSEL, (WPARAM)&dwStart, (LPARAM)&dwEnd);
1119
1120         *from = dwStart;
1121         *to = dwEnd;
1122     }
1123 }
1124
1125 bool wxTextCtrl::IsEditable() const
1126 {
1127     // strangely enough, we may be called before the control is created: our
1128     // own Create() calls MSWGetStyle() which calls AcceptsFocus() which calls
1129     // us
1130     if ( !m_hWnd )
1131         return TRUE;
1132
1133     long style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1134
1135     return (style & ES_READONLY) == 0;
1136 }
1137
1138 // ----------------------------------------------------------------------------
1139 // selection
1140 // ----------------------------------------------------------------------------
1141
1142 void wxTextCtrl::SetSelection(long from, long to)
1143 {
1144     // if from and to are both -1, it means (in wxWindows) that all text should
1145     // be selected - translate into Windows convention
1146     if ( (from == -1) && (to == -1) )
1147     {
1148         from = 0;
1149         to = -1;
1150     }
1151
1152     DoSetSelection(from, to);
1153 }
1154
1155 void wxTextCtrl::DoSetSelection(long from, long to, bool scrollCaret)
1156 {
1157     HWND hWnd = GetHwnd();
1158
1159 #ifdef __WIN32__
1160 #if wxUSE_RICHEDIT
1161     if ( IsRich() )
1162     {
1163         CHARRANGE range;
1164         range.cpMin = from;
1165         range.cpMax = to;
1166         SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM) &range);
1167     }
1168     else
1169 #endif // wxUSE_RICHEDIT
1170     {
1171         SendMessage(hWnd, EM_SETSEL, (WPARAM)from, (LPARAM)to);
1172     }
1173
1174     if ( scrollCaret )
1175     {
1176 #if wxUSE_RICHEDIT
1177         // richedit 3.0 (i.e. the version living in riched20.dll distributed
1178         // with Windows 2000 and beyond) doesn't honour EM_SCROLLCARET when
1179         // emulating richedit 2.0 unless the control has focus or ECO_NOHIDESEL
1180         // option is set (but it does work ok in richedit 1.0 mode...)
1181         //
1182         // so to make it work we either need to give focus to it here which
1183         // will probably create many problems (dummy focus events; window
1184         // containing the text control being brought to foreground
1185         // unexpectedly; ...) or to temporarily set ECO_NOHIDESEL which may
1186         // create other problems too -- and in fact it does because if we turn
1187         // on/off this style while appending the text to the control, the
1188         // vertical scrollbar never appears in it even if we append tons of
1189         // text and to work around this the only solution I found was to use
1190         // ES_DISABLENOSCROLL
1191         //
1192         // this is very ugly but I don't see any other way to make this work
1193         if ( GetRichVersion() > 1 )
1194         {
1195             if ( !HasFlag(wxTE_NOHIDESEL) )
1196             {
1197                 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1198                               ECOOP_OR, ECO_NOHIDESEL);
1199             }
1200             //else: everything is already ok
1201         }
1202 #endif // wxUSE_RICHEDIT
1203
1204         SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
1205
1206 #if wxUSE_RICHEDIT
1207         // restore ECO_NOHIDESEL if we changed it
1208         if ( GetRichVersion() > 1 && !HasFlag(wxTE_NOHIDESEL) )
1209         {
1210             ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1211                           ECOOP_AND, ~ECO_NOHIDESEL);
1212         }
1213 #endif // wxUSE_RICHEDIT
1214     }
1215 #else // Win16
1216     // WPARAM is 0: selection is scrolled into view
1217     SendMessage(hWnd, EM_SETSEL, (WPARAM)0, (LPARAM)MAKELONG(from, to));
1218 #endif // Win32/16
1219 }
1220
1221 // ----------------------------------------------------------------------------
1222 // Editing
1223 // ----------------------------------------------------------------------------
1224
1225 void wxTextCtrl::Replace(long from, long to, const wxString& value)
1226 {
1227     // Set selection and remove it
1228     DoSetSelection(from, to, FALSE /* don't scroll caret into view */);
1229
1230     SendMessage(GetHwnd(), EM_REPLACESEL,
1231 #ifdef __WIN32__
1232                 TRUE,
1233 #else
1234                 FALSE,
1235 #endif
1236                 (LPARAM)value.c_str());
1237 }
1238
1239 void wxTextCtrl::Remove(long from, long to)
1240 {
1241     Replace(from, to, wxEmptyString);
1242 }
1243
1244 bool wxTextCtrl::LoadFile(const wxString& file)
1245 {
1246     if ( wxTextCtrlBase::LoadFile(file) )
1247     {
1248         // update the size limit if needed
1249         AdjustSpaceLimit();
1250
1251         return TRUE;
1252     }
1253
1254     return FALSE;
1255 }
1256
1257 bool wxTextCtrl::IsModified() const
1258 {
1259     return SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0;
1260 }
1261
1262 // Makes 'unmodified'
1263 void wxTextCtrl::DiscardEdits()
1264 {
1265     SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0L);
1266 }
1267
1268 int wxTextCtrl::GetNumberOfLines() const
1269 {
1270     return (int)SendMessage(GetHwnd(), EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0);
1271 }
1272
1273 long wxTextCtrl::XYToPosition(long x, long y) const
1274 {
1275     // This gets the char index for the _beginning_ of this line
1276     long charIndex = SendMessage(GetHwnd(), EM_LINEINDEX, (WPARAM)y, (LPARAM)0);
1277
1278     return charIndex + x;
1279 }
1280
1281 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
1282 {
1283     HWND hWnd = GetHwnd();
1284
1285     // This gets the line number containing the character
1286     long lineNo;
1287 #if wxUSE_RICHEDIT
1288     if ( IsRich() )
1289     {
1290         lineNo = SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, (LPARAM)pos);
1291     }
1292     else
1293 #endif // wxUSE_RICHEDIT
1294     {
1295         lineNo = SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, 0);
1296     }
1297
1298     if ( lineNo == -1 )
1299     {
1300         // no such line
1301         return FALSE;
1302     }
1303
1304     // This gets the char index for the _beginning_ of this line
1305     long charIndex = SendMessage(hWnd, EM_LINEINDEX, (WPARAM)lineNo, (LPARAM)0);
1306     if ( charIndex == -1 )
1307     {
1308         return FALSE;
1309     }
1310
1311     // The X position must therefore be the different between pos and charIndex
1312     if ( x )
1313         *x = pos - charIndex;
1314     if ( y )
1315         *y = lineNo;
1316
1317     return TRUE;
1318 }
1319
1320 void wxTextCtrl::ShowPosition(long pos)
1321 {
1322     HWND hWnd = GetHwnd();
1323
1324     // To scroll to a position, we pass the number of lines and characters
1325     // to scroll *by*. This means that we need to:
1326     // (1) Find the line position of the current line.
1327     // (2) Find the line position of pos.
1328     // (3) Scroll by (pos - current).
1329     // For now, ignore the horizontal scrolling.
1330
1331     // Is this where scrolling is relative to - the line containing the caret?
1332     // Or is the first visible line??? Try first visible line.
1333 //    int currentLineLineNo1 = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)-1, (LPARAM)0L);
1334
1335     int currentLineLineNo = (int)SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, (WPARAM)0, (LPARAM)0L);
1336
1337     int specifiedLineLineNo = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, (LPARAM)0L);
1338
1339     int linesToScroll = specifiedLineLineNo - currentLineLineNo;
1340
1341     if (linesToScroll != 0)
1342       (void)SendMessage(hWnd, EM_LINESCROLL, (WPARAM)0, (LPARAM)linesToScroll);
1343 }
1344
1345 long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const
1346 {
1347     return ::SendMessage(GetHwnd(), EM_LINELENGTH, (WPARAM)pos, 0);
1348 }
1349
1350 int wxTextCtrl::GetLineLength(long lineNo) const
1351 {
1352     long pos = XYToPosition(0, lineNo);
1353
1354     return GetLengthOfLineContainingPos(pos);
1355 }
1356
1357 wxString wxTextCtrl::GetLineText(long lineNo) const
1358 {
1359     size_t len = (size_t)GetLineLength(lineNo) + 1;
1360
1361     // there must be at least enough place for the length WORD in the
1362     // buffer
1363     len += sizeof(WORD);
1364
1365     wxString str;
1366     {
1367         wxStringBufferLength tmp(str, len);
1368         wxChar *buf = tmp;
1369
1370         *(WORD *)buf = (WORD)len;
1371         len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf);
1372
1373 #if wxUSE_RICHEDIT
1374         if ( IsRich() )
1375         {
1376             // remove the '\r' returned by the rich edit control, the user code
1377             // should never see it
1378             if ( buf[len - 2] == _T('\r') && buf[len - 1] == _T('\n') )
1379             {
1380                 buf[len - 2] = _T('\n');
1381                 len--;
1382             }
1383         }
1384 #endif // wxUSE_RICHEDIT
1385
1386         // remove the '\n' at the end, if any (this is how this function is
1387         // supposed to work according to the docs)
1388         if ( buf[len - 1] == _T('\n') )
1389         {
1390             len--;
1391         }
1392
1393         buf[len] = 0;
1394         tmp.SetLength(len);
1395     }
1396
1397     return str;
1398 }
1399
1400 void wxTextCtrl::SetMaxLength(unsigned long len)
1401 {
1402     ::SendMessage(GetHwnd(), EM_LIMITTEXT, len, 0);
1403 }
1404
1405 // ----------------------------------------------------------------------------
1406 // Undo/redo
1407 // ----------------------------------------------------------------------------
1408
1409 void wxTextCtrl::Undo()
1410 {
1411     if (CanUndo())
1412     {
1413         ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1414     }
1415 }
1416
1417 void wxTextCtrl::Redo()
1418 {
1419     if (CanRedo())
1420     {
1421         // Same as Undo, since Undo undoes the undo, i.e. a redo.
1422         ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1423     }
1424 }
1425
1426 bool wxTextCtrl::CanUndo() const
1427 {
1428     return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1429 }
1430
1431 bool wxTextCtrl::CanRedo() const
1432 {
1433     return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1434 }
1435
1436 // ----------------------------------------------------------------------------
1437 // caret handling (Windows only)
1438 // ----------------------------------------------------------------------------
1439
1440 bool wxTextCtrl::ShowNativeCaret(bool show)
1441 {
1442     if ( show != m_isNativeCaretShown )
1443     {
1444         if ( !(show ? ::ShowCaret(GetHwnd()) : ::HideCaret(GetHwnd())) )
1445         {
1446             // not an error, may simply indicate that it's not shown/hidden
1447             // yet (i.e. it had been hidden/showh 2 times before)
1448             return false;
1449         }
1450
1451         m_isNativeCaretShown = show;
1452     }
1453
1454     return true;
1455 }
1456
1457 // ----------------------------------------------------------------------------
1458 // implemenation details
1459 // ----------------------------------------------------------------------------
1460
1461 void wxTextCtrl::Command(wxCommandEvent & event)
1462 {
1463     SetValue(event.GetString());
1464     ProcessCommand (event);
1465 }
1466
1467 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
1468 {
1469     // By default, load the first file into the text window.
1470     if (event.GetNumberOfFiles() > 0)
1471     {
1472         LoadFile(event.GetFiles()[0]);
1473     }
1474 }
1475
1476 // ----------------------------------------------------------------------------
1477 // kbd input processing
1478 // ----------------------------------------------------------------------------
1479
1480 bool wxTextCtrl::MSWShouldPreProcessMessage(WXMSG* pMsg)
1481 {
1482     MSG *msg = (MSG *)pMsg;
1483
1484     // check for our special keys here: if we don't do it and the parent frame
1485     // uses them as accelerators, they wouldn't work at all, so we disable
1486     // usual preprocessing for them
1487     if ( msg->message == WM_KEYDOWN )
1488     {
1489         WORD vkey = (WORD) msg->wParam;
1490         if ( (HIWORD(msg->lParam) & KF_ALTDOWN) == KF_ALTDOWN )
1491         {
1492             if ( vkey == VK_BACK )
1493                 return FALSE;
1494         }
1495         else // no Alt
1496         {
1497             // we want to process some Ctrl-foo and Shift-bar but no key
1498             // combinations without either Ctrl or Shift nor with both of them
1499             // pressed
1500             const int ctrl = wxIsCtrlDown(),
1501                       shift = wxIsShiftDown();
1502             switch ( ctrl + shift )
1503             {
1504                 default:
1505                     wxFAIL_MSG( _T("how many modifiers have we got?") );
1506                     // fall through
1507
1508                 case 0:
1509                 case 2:
1510                     break;
1511
1512                 case 1:
1513                     // either Ctrl or Shift pressed
1514                     if ( ctrl )
1515                     {
1516                         switch ( vkey )
1517                         {
1518                             case 'C':
1519                             case 'V':
1520                             case 'X':
1521                             case VK_INSERT:
1522                             case VK_DELETE:
1523                             case VK_HOME:
1524                             case VK_END:
1525                                 return FALSE;
1526                         }
1527                     }
1528                     else // Shift is pressed
1529                     {
1530                         if ( vkey == VK_INSERT || vkey == VK_DELETE )
1531                             return FALSE;
1532                     }
1533             }
1534         }
1535     }
1536
1537     return wxControl::MSWShouldPreProcessMessage(pMsg);
1538 }
1539
1540 void wxTextCtrl::OnChar(wxKeyEvent& event)
1541 {
1542     switch ( event.GetKeyCode() )
1543     {
1544         case WXK_RETURN:
1545             if ( !(m_windowStyle & wxTE_MULTILINE) )
1546             {
1547                 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1548                 InitCommandEvent(event);
1549                 event.SetString(GetValue());
1550                 if ( GetEventHandler()->ProcessEvent(event) )
1551                     return;
1552             }
1553             //else: multiline controls need Enter for themselves
1554
1555             break;
1556
1557         case WXK_TAB:
1558             // always produce navigation event - even if we process TAB
1559             // ourselves the fact that we got here means that the user code
1560             // decided to skip processing of this TAB - probably to let it
1561             // do its default job.
1562             {
1563                 wxNavigationKeyEvent eventNav;
1564                 eventNav.SetDirection(!event.ShiftDown());
1565                 eventNav.SetWindowChange(event.ControlDown());
1566                 eventNav.SetEventObject(this);
1567
1568                 if ( GetParent()->GetEventHandler()->ProcessEvent(eventNav) )
1569                     return;
1570             }
1571             break;
1572     }
1573
1574     // no, we didn't process it
1575     event.Skip();
1576 }
1577
1578 long wxTextCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
1579 {
1580     long lRc = wxTextCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
1581
1582     if ( nMsg == WM_GETDLGCODE )
1583     {
1584         // we always want the chars and the arrows: the arrows for navigation
1585         // and the chars because we want Ctrl-C to work even in a read only
1586         // control
1587         long lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
1588
1589         if ( IsEditable() )
1590         {
1591             // we may have several different cases:
1592             // 1. normal case: both TAB and ENTER are used for dlg navigation
1593             // 2. ctrl which wants TAB for itself: ENTER is used to pass to the
1594             //    next control in the dialog
1595             // 3. ctrl which wants ENTER for itself: TAB is used for dialog
1596             //    navigation
1597             // 4. ctrl which wants both TAB and ENTER: Ctrl-ENTER is used to go
1598             //    to the next control
1599
1600             // the multiline edit control should always get <Return> for itself
1601             if ( HasFlag(wxTE_PROCESS_ENTER) || HasFlag(wxTE_MULTILINE) )
1602                 lDlgCode |= DLGC_WANTMESSAGE;
1603
1604             if ( HasFlag(wxTE_PROCESS_TAB) )
1605                 lDlgCode |= DLGC_WANTTAB;
1606
1607             lRc |= lDlgCode;
1608         }
1609         else // !editable
1610         {
1611             // NB: use "=", not "|=" as the base class version returns the
1612             //     same flags is this state as usual (i.e. including
1613             //     DLGC_WANTMESSAGE). This is strange (how does it work in the
1614             //     native Win32 apps?) but for now live with it.
1615             lRc = lDlgCode;
1616         }
1617     }
1618
1619     return lRc;
1620 }
1621
1622 // ----------------------------------------------------------------------------
1623 // text control event processing
1624 // ----------------------------------------------------------------------------
1625
1626 bool wxTextCtrl::SendUpdateEvent()
1627 {
1628     // is event reporting suspended?
1629     if ( m_suppressNextUpdate )
1630     {
1631         // do process the next one
1632         m_suppressNextUpdate = FALSE;
1633
1634         return FALSE;
1635     }
1636
1637     wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, GetId());
1638     InitCommandEvent(event);
1639     event.SetString(GetValue());
1640
1641     return ProcessCommand(event);
1642 }
1643
1644 bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
1645 {
1646     switch ( param )
1647     {
1648         case EN_SETFOCUS:
1649         case EN_KILLFOCUS:
1650             {
1651                 wxFocusEvent event(param == EN_KILLFOCUS ? wxEVT_KILL_FOCUS
1652                                                          : wxEVT_SET_FOCUS,
1653                                    m_windowId);
1654                 event.SetEventObject(this);
1655                 GetEventHandler()->ProcessEvent(event);
1656             }
1657             break;
1658
1659         case EN_CHANGE:
1660             SendUpdateEvent();
1661             break;
1662
1663         case EN_MAXTEXT:
1664             // the text size limit has been hit -- try to increase it
1665             if ( !AdjustSpaceLimit() )
1666             {
1667                 wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, m_windowId);
1668                 InitCommandEvent(event);
1669                 event.SetString(GetValue());
1670                 ProcessCommand(event);
1671             }
1672             break;
1673
1674             // the other edit notification messages are not processed
1675         default:
1676             return FALSE;
1677     }
1678
1679     // processed
1680     return TRUE;
1681 }
1682
1683 WXHBRUSH wxTextCtrl::OnCtlColor(WXHDC pDC, WXHWND WXUNUSED(pWnd), WXUINT WXUNUSED(nCtlColor),
1684 #if wxUSE_CTL3D
1685                                WXUINT message,
1686                                WXWPARAM wParam,
1687                                WXLPARAM lParam
1688 #else
1689                                WXUINT WXUNUSED(message),
1690                                WXWPARAM WXUNUSED(wParam),
1691                                WXLPARAM WXUNUSED(lParam)
1692 #endif
1693     )
1694 {
1695 #if wxUSE_CTL3D
1696     if ( m_useCtl3D )
1697     {
1698         HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
1699         return (WXHBRUSH) hbrush;
1700     }
1701 #endif // wxUSE_CTL3D
1702
1703     HDC hdc = (HDC)pDC;
1704     wxColour colBack = GetBackgroundColour();
1705
1706     if (!IsEnabled() && (GetWindowStyle() & wxTE_MULTILINE) == 0)
1707         colBack = wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE);
1708
1709     ::SetBkColor(hdc, wxColourToRGB(colBack));
1710     ::SetTextColor(hdc, wxColourToRGB(GetForegroundColour()));
1711
1712     wxBrush *brush = wxTheBrushList->FindOrCreateBrush(colBack, wxSOLID);
1713
1714     return (WXHBRUSH)brush->GetResourceHandle();
1715 }
1716
1717 // In WIN16, need to override normal erasing because
1718 // Ctl3D doesn't use the wxWindows background colour.
1719 #ifdef __WIN16__
1720 void wxTextCtrl::OnEraseBackground(wxEraseEvent& event)
1721 {
1722     wxColour col(m_backgroundColour);
1723
1724 #if wxUSE_CTL3D
1725     if (m_useCtl3D)
1726         col = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
1727 #endif
1728
1729     RECT rect;
1730     ::GetClientRect(GetHwnd(), &rect);
1731
1732     COLORREF ref = wxColourToRGB(col);
1733     HBRUSH hBrush = ::CreateSolidBrush(ref);
1734     if ( !hBrush )
1735         wxLogLastError(wxT("CreateSolidBrush"));
1736
1737     HDC hdc = (HDC)event.GetDC()->GetHDC();
1738
1739     int mode = ::SetMapMode(hdc, MM_TEXT);
1740
1741     ::FillRect(hdc, &rect, hBrush);
1742     ::DeleteObject(hBrush);
1743     ::SetMapMode(hdc, mode);
1744
1745 }
1746 #endif // Win16
1747
1748 bool wxTextCtrl::AdjustSpaceLimit()
1749 {
1750 #ifndef __WIN16__
1751     unsigned int limit = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
1752
1753     // HACK: we try to automatically extend the limit for the amount of text
1754     //       to allow (interactively) entering more than 64Kb of text under
1755     //       Win9x but we shouldn't reset the text limit which was previously
1756     //       set explicitly with SetMaxLength()
1757     //
1758     //       we could solve this by storing the limit we set in wxTextCtrl but
1759     //       to save space we prefer to simply test here the actual limit
1760     //       value: we consider that SetMaxLength() can only be called for
1761     //       values < 32Kb
1762     if ( limit < 0x8000 )
1763     {
1764         // we've got more text than limit set by SetMaxLength()
1765         return FALSE;
1766     }
1767
1768     unsigned int len = ::GetWindowTextLength(GetHwnd());
1769     if ( len >= limit )
1770     {
1771         limit = len + 0x8000;    // 32Kb
1772
1773 #if wxUSE_RICHEDIT
1774         if ( IsRich() )
1775         {
1776             // as a nice side effect, this also allows passing limit > 64Kb
1777             ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, limit);
1778         }
1779         else
1780 #endif // wxUSE_RICHEDIT
1781         {
1782             if ( limit > 0xffff )
1783             {
1784                 // this will set it to a platform-dependent maximum (much more
1785                 // than 64Kb under NT)
1786                 limit = 0;
1787             }
1788
1789             ::SendMessage(GetHwnd(), EM_LIMITTEXT, limit, 0);
1790         }
1791     }
1792 #endif // !Win16
1793
1794     // we changed the limit
1795     return TRUE;
1796 }
1797
1798 bool wxTextCtrl::AcceptsFocus() const
1799 {
1800     // we don't want focus if we can't be edited unless we're a multiline
1801     // control because then it might be still nice to get focus from keyboard
1802     // to be able to scroll it without mouse
1803     return (IsEditable() || IsMultiLine()) && wxControl::AcceptsFocus();
1804 }
1805
1806 wxSize wxTextCtrl::DoGetBestSize() const
1807 {
1808     int cx, cy;
1809     wxGetCharSize(GetHWND(), &cx, &cy, &GetFont());
1810
1811     int wText = DEFAULT_ITEM_WIDTH;
1812
1813     int hText = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy);
1814     if ( m_windowStyle & wxTE_MULTILINE )
1815     {
1816         hText *= wxMax(GetNumberOfLines(), 5);
1817     }
1818     //else: for single line control everything is ok
1819
1820     return wxSize(wText, hText);
1821 }
1822
1823 // ----------------------------------------------------------------------------
1824 // standard handlers for standard edit menu events
1825 // ----------------------------------------------------------------------------
1826
1827 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1828 {
1829     Cut();
1830 }
1831
1832 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1833 {
1834     Copy();
1835 }
1836
1837 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1838 {
1839     Paste();
1840 }
1841
1842 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1843 {
1844     Undo();
1845 }
1846
1847 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1848 {
1849     Redo();
1850 }
1851
1852 void wxTextCtrl::OnDelete(wxCommandEvent& WXUNUSED(event))
1853 {
1854     long from, to;
1855     GetSelection(& from, & to);
1856     if (from != -1 && to != -1)
1857         Remove(from, to);
1858 }
1859
1860 void wxTextCtrl::OnSelectAll(wxCommandEvent& WXUNUSED(event))
1861 {
1862     SetSelection(-1, -1);
1863 }
1864
1865 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1866 {
1867     event.Enable( CanCut() );
1868 }
1869
1870 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1871 {
1872     event.Enable( CanCopy() );
1873 }
1874
1875 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1876 {
1877     event.Enable( CanPaste() );
1878 }
1879
1880 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1881 {
1882     event.Enable( CanUndo() );
1883 }
1884
1885 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1886 {
1887     event.Enable( CanRedo() );
1888 }
1889
1890 void wxTextCtrl::OnUpdateDelete(wxUpdateUIEvent& event)
1891 {
1892     long from, to;
1893     GetSelection(& from, & to);
1894     event.Enable(from != -1 && to != -1 && from != to && IsEditable()) ;
1895 }
1896
1897 void wxTextCtrl::OnUpdateSelectAll(wxUpdateUIEvent& event)
1898 {
1899     event.Enable(GetLastPosition() > 0);
1900 }
1901
1902 void wxTextCtrl::OnRightClick(wxMouseEvent& event)
1903 {
1904 #if wxUSE_RICHEDIT
1905     if (IsRich())
1906     {
1907         if (!m_privateContextMenu)
1908         {
1909             m_privateContextMenu = new wxMenu;
1910             m_privateContextMenu->Append(wxID_UNDO, _("&Undo"));
1911             m_privateContextMenu->Append(wxID_REDO, _("&Redo"));
1912             m_privateContextMenu->AppendSeparator();
1913             m_privateContextMenu->Append(wxID_CUT, _("Cu&t"));
1914             m_privateContextMenu->Append(wxID_COPY, _("&Copy"));
1915             m_privateContextMenu->Append(wxID_PASTE, _("&Paste"));
1916             m_privateContextMenu->Append(wxID_CLEAR, _("&Delete"));
1917             m_privateContextMenu->AppendSeparator();
1918             m_privateContextMenu->Append(wxID_SELECTALL, _("Select &All"));
1919         }
1920         PopupMenu(m_privateContextMenu, event.GetPosition());
1921         return;
1922     }
1923     else
1924 #endif
1925     event.Skip();
1926 }
1927
1928 void wxTextCtrl::OnSetFocus(wxFocusEvent& WXUNUSED(event))
1929 {
1930     // be sure the caret remains invisible if the user had hidden it
1931     if ( !m_isNativeCaretShown )
1932     {
1933         ::HideCaret(GetHwnd());
1934     }
1935 }
1936
1937 // the rest of the file only deals with the rich edit controls
1938 #if wxUSE_RICHEDIT
1939
1940 // ----------------------------------------------------------------------------
1941 // EN_LINK processing
1942 // ----------------------------------------------------------------------------
1943
1944 bool wxTextCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
1945 {
1946     NMHDR *hdr = (NMHDR* )lParam;
1947     switch ( hdr->code )
1948     {
1949        case EN_MSGFILTER:
1950             {
1951                 const MSGFILTER *msgf = (MSGFILTER *)lParam;
1952                 UINT msg = msgf->msg;
1953
1954                 // this is a bit crazy but richedit 1.0 sends us all mouse
1955                 // events _except_ WM_LBUTTONUP (don't ask me why) so we have
1956                 // generate the wxWin events for this message manually
1957                 //
1958                 // NB: in fact, this is still not totally correct as it does
1959                 //     send us WM_LBUTTONUP if the selection was cleared by the
1960                 //     last click -- so currently we get 2 events in this case,
1961                 //     but as I don't see any obvious way to check for this I
1962                 //     leave this code in place because it's still better than
1963                 //     not getting left up events at all
1964                 if ( msg == WM_LBUTTONUP )
1965                 {
1966                     WXUINT flags = msgf->wParam;
1967                     int x = GET_X_LPARAM(msgf->lParam),
1968                         y = GET_Y_LPARAM(msgf->lParam);
1969
1970                     HandleMouseEvent(msg, x, y, flags);
1971                 }
1972             }
1973
1974             // return TRUE to process the event (and FALSE to ignore it)
1975             return TRUE;
1976
1977         case EN_LINK:
1978             {
1979                 const ENLINK *enlink = (ENLINK *)hdr;
1980
1981                 switch ( enlink->msg )
1982                 {
1983                     case WM_SETCURSOR:
1984                         // ok, so it is hardcoded - do we really nee to
1985                         // customize it?
1986                         ::SetCursor(GetHcursorOf(wxCursor(wxCURSOR_HAND)));
1987                         *result = TRUE;
1988                         break;
1989
1990                     case WM_MOUSEMOVE:
1991                     case WM_LBUTTONDOWN:
1992                     case WM_LBUTTONUP:
1993                     case WM_LBUTTONDBLCLK:
1994                     case WM_RBUTTONDOWN:
1995                     case WM_RBUTTONUP:
1996                     case WM_RBUTTONDBLCLK:
1997                         // send a mouse event
1998                         {
1999                             static const wxEventType eventsMouse[] =
2000                             {
2001                                 wxEVT_MOTION,
2002                                 wxEVT_LEFT_DOWN,
2003                                 wxEVT_LEFT_UP,
2004                                 wxEVT_LEFT_DCLICK,
2005                                 wxEVT_RIGHT_DOWN,
2006                                 wxEVT_RIGHT_UP,
2007                                 wxEVT_RIGHT_DCLICK,
2008                             };
2009
2010                             // the event ids are consecutive
2011                             wxMouseEvent
2012                                 evtMouse(eventsMouse[enlink->msg - WM_MOUSEMOVE]);
2013
2014                             InitMouseEvent(evtMouse,
2015                                            GET_X_LPARAM(enlink->lParam),
2016                                            GET_Y_LPARAM(enlink->lParam),
2017                                            enlink->wParam);
2018
2019                             wxTextUrlEvent event(m_windowId, evtMouse,
2020                                                  enlink->chrg.cpMin,
2021                                                  enlink->chrg.cpMax);
2022
2023                             InitCommandEvent(event);
2024
2025                             *result = ProcessCommand(event);
2026                         }
2027                         break;
2028                 }
2029             }
2030             return TRUE;
2031     }
2032
2033     // not processed, leave it to the base class
2034     return wxTextCtrlBase::MSWOnNotify(idCtrl, lParam, result);
2035 }
2036
2037 // ----------------------------------------------------------------------------
2038 // colour setting for the rich edit controls
2039 // ----------------------------------------------------------------------------
2040
2041 bool wxTextCtrl::SetBackgroundColour(const wxColour& colour)
2042 {
2043     if ( !wxTextCtrlBase::SetBackgroundColour(colour) )
2044     {
2045         // colour didn't really change
2046         return FALSE;
2047     }
2048
2049     if ( IsRich() )
2050     {
2051         // rich edit doesn't use WM_CTLCOLOR, hence we need to send
2052         // EM_SETBKGNDCOLOR additionally
2053         ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour));
2054     }
2055
2056     return TRUE;
2057 }
2058
2059 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
2060 {
2061     if ( !wxTextCtrlBase::SetForegroundColour(colour) )
2062     {
2063         // colour didn't really change
2064         return FALSE;
2065     }
2066
2067     if ( IsRich() )
2068     {
2069         // change the colour of everything
2070         CHARFORMAT cf;
2071         wxZeroMemory(cf);
2072         cf.cbSize = sizeof(cf);
2073         cf.dwMask = CFM_COLOR;
2074         cf.crTextColor = wxColourToRGB(colour);
2075         ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf);
2076     }
2077
2078     return TRUE;
2079 }
2080
2081 // ----------------------------------------------------------------------------
2082 // styling support for rich edit controls
2083 // ----------------------------------------------------------------------------
2084
2085 #if wxUSE_RICHEDIT
2086
2087 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
2088 {
2089     if ( !IsRich() )
2090     {
2091         // can't do it with normal text control
2092         return FALSE;
2093     }
2094
2095     // the richedit 1.0 doesn't handle setting background colour, so don't
2096     // even try to do anything if it's the only thing we want to change
2097     if ( m_verRichEdit == 1 && !style.HasFont() && !style.HasTextColour() &&
2098         !style.HasLeftIndent() && !style.HasRightIndent() && !style.HasAlignment() &&
2099         !style.HasTabs() )
2100     {
2101         // nothing to do: return TRUE if there was really nothing to do and
2102         // FALSE if we failed to set bg colour
2103         return !style.HasBackgroundColour();
2104     }
2105
2106     // order the range if needed
2107     if ( start > end )
2108     {
2109         long tmp = start;
2110         start = end;
2111         end = tmp;
2112     }
2113
2114     // we can only change the format of the selection, so select the range we
2115     // want and restore the old selection later
2116     long startOld, endOld;
2117     GetSelection(&startOld, &endOld);
2118
2119     // but do we really have to change the selection?
2120     bool changeSel = start != startOld || end != endOld;
2121
2122     if ( changeSel )
2123     {
2124         DoSetSelection(start, end, FALSE /* don't scroll caret into view */);
2125     }
2126
2127     // initialize CHARFORMAT struct
2128 #if wxUSE_RICHEDIT2
2129     CHARFORMAT2 cf;
2130 #else
2131     CHARFORMAT cf;
2132 #endif
2133
2134     wxZeroMemory(cf);
2135
2136     // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2137     // CHARFORMAT in that case
2138 #if wxUSE_RICHEDIT2
2139     if ( m_verRichEdit == 1 )
2140     {
2141         // this is the only thing the control is going to grok
2142         cf.cbSize = sizeof(CHARFORMAT);
2143     }
2144     else
2145 #endif
2146     {
2147         // CHARFORMAT or CHARFORMAT2
2148         cf.cbSize = sizeof(cf);
2149     }
2150
2151     if ( style.HasFont() )
2152     {
2153         // VZ: CFM_CHARSET doesn't seem to do anything at all in RichEdit 2.0
2154         //     but using it doesn't seem to hurt neither so leaving it for now
2155
2156         cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET |
2157                      CFM_ITALIC | CFM_BOLD | CFM_UNDERLINE;
2158
2159         // fill in data from LOGFONT but recalculate lfHeight because we need
2160         // the real height in twips and not the negative number which
2161         // wxFillLogFont() returns (this is correct in general and works with
2162         // the Windows font mapper, but not here)
2163         LOGFONT lf;
2164         wxFillLogFont(&lf, &style.GetFont());
2165         cf.yHeight = 20*style.GetFont().GetPointSize(); // 1 pt = 20 twips
2166         cf.bCharSet = lf.lfCharSet;
2167         cf.bPitchAndFamily = lf.lfPitchAndFamily;
2168         wxStrncpy( cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName) );
2169
2170         // also deal with underline/italic/bold attributes: note that we must
2171         // always set CFM_ITALIC &c bits in dwMask, even if we don't set the
2172         // style to allow clearing it
2173         if ( lf.lfItalic )
2174         {
2175             cf.dwEffects |= CFE_ITALIC;
2176         }
2177
2178         if ( lf.lfWeight == FW_BOLD )
2179         {
2180             cf.dwEffects |= CFE_BOLD;
2181         }
2182
2183         if ( lf.lfUnderline )
2184         {
2185             cf.dwEffects |= CFE_UNDERLINE;
2186         }
2187
2188         // strikeout fonts are not supported by wxWindows
2189     }
2190
2191     if ( style.HasTextColour() )
2192     {
2193         cf.dwMask |= CFM_COLOR;
2194         cf.crTextColor = wxColourToRGB(style.GetTextColour());
2195     }
2196
2197 #if wxUSE_RICHEDIT2
2198     if ( m_verRichEdit != 1 && style.HasBackgroundColour() )
2199     {
2200         cf.dwMask |= CFM_BACKCOLOR;
2201         cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
2202     }
2203 #endif // wxUSE_RICHEDIT2
2204
2205     // do format the selection
2206     bool ok = ::SendMessage(GetHwnd(), EM_SETCHARFORMAT,
2207                             SCF_SELECTION, (LPARAM)&cf) != 0;
2208     if ( !ok )
2209     {
2210         wxLogDebug(_T("SendMessage(EM_SETCHARFORMAT, SCF_SELECTION) failed"));
2211     }
2212
2213     // now do the paragraph formatting
2214     PARAFORMAT2 pf;
2215     wxZeroMemory(pf);
2216     // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2217     // PARAFORMAT in that case
2218 #if wxUSE_RICHEDIT2
2219     if ( m_verRichEdit == 1 )
2220     {
2221         // this is the only thing the control is going to grok
2222         pf.cbSize = sizeof(PARAFORMAT);
2223     }
2224     else
2225 #endif
2226     {
2227         // PARAFORMAT or PARAFORMAT2
2228         pf.cbSize = sizeof(pf);
2229     }
2230
2231     if (style.HasAlignment())
2232     {
2233         pf.dwMask |= PFM_ALIGNMENT;
2234         if (style.GetAlignment() == wxTEXT_ALIGNMENT_RIGHT)
2235             pf.wAlignment = PFA_RIGHT;
2236         else if (style.GetAlignment() == wxTEXT_ALIGNMENT_CENTRE)
2237             pf.wAlignment = PFA_CENTER;
2238         else if (style.GetAlignment() == wxTEXT_ALIGNMENT_JUSTIFIED)
2239             pf.wAlignment = PFA_JUSTIFY;
2240         else
2241             pf.wAlignment = PFA_LEFT;
2242     }
2243
2244     if (style.HasLeftIndent())
2245     {
2246         pf.dwMask |= PFM_STARTINDENT;
2247
2248         // Convert from 1/10 mm to TWIPS
2249         pf.dxStartIndent = (int) (((double) style.GetLeftIndent()) * mm2twips / 10.0) ;
2250
2251         // TODO: do we need to specify dxOffset?
2252     }
2253
2254     if (style.HasRightIndent())
2255     {
2256         pf.dwMask |= PFM_RIGHTINDENT;
2257
2258         // Convert from 1/10 mm to TWIPS
2259         pf.dxRightIndent = (int) (((double) style.GetRightIndent()) * mm2twips / 10.0) ;
2260     }
2261
2262     if (style.HasTabs())
2263     {
2264         pf.dwMask |= PFM_TABSTOPS;
2265
2266         const wxArrayInt& tabs = style.GetTabs();
2267
2268         pf.cTabCount = wxMin(tabs.GetCount(), MAX_TAB_STOPS);
2269         size_t i;
2270         for (i = 0; i < (size_t) pf.cTabCount; i++)
2271         {
2272             // Convert from 1/10 mm to TWIPS
2273             pf.rgxTabs[i] = (int) (((double) tabs[i]) * mm2twips / 10.0) ;
2274         }
2275     }
2276
2277     if (pf.dwMask != 0)
2278     {
2279         // do format the selection
2280         bool ok = ::SendMessage(GetHwnd(), EM_SETPARAFORMAT,
2281             0, (LPARAM) &pf) != 0;
2282         if ( !ok )
2283         {
2284             wxLogDebug(_T("SendMessage(EM_SETPARAFORMAT, 0) failed"));
2285         }
2286     }
2287
2288     if ( changeSel )
2289     {
2290         // restore the original selection
2291         DoSetSelection(startOld, endOld, FALSE);
2292     }
2293
2294     return ok;
2295 }
2296
2297 bool wxTextCtrl::SetDefaultStyle(const wxTextAttr& style)
2298 {
2299     if ( !wxTextCtrlBase::SetDefaultStyle(style) )
2300         return FALSE;
2301
2302     // we have to do this or the style wouldn't apply for the text typed by the
2303     // user
2304     long posLast = GetLastPosition();
2305     SetStyle(posLast, posLast, m_defaultStyle);
2306
2307     return TRUE;
2308 }
2309
2310 bool wxTextCtrl::GetStyle(long position, wxTextAttr& style)
2311 {
2312     if ( !IsRich() )
2313     {
2314         // can't do it with normal text control
2315         return FALSE;
2316     }
2317
2318     // initialize CHARFORMAT struct
2319 #if wxUSE_RICHEDIT2
2320     CHARFORMAT2 cf;
2321 #else
2322     CHARFORMAT cf;
2323 #endif
2324
2325     wxZeroMemory(cf);
2326
2327     // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2328     // CHARFORMAT in that case
2329 #if wxUSE_RICHEDIT2
2330     if ( m_verRichEdit == 1 )
2331     {
2332         // this is the only thing the control is going to grok
2333         cf.cbSize = sizeof(CHARFORMAT);
2334     }
2335     else
2336 #endif
2337     {
2338         // CHARFORMAT or CHARFORMAT2
2339         cf.cbSize = sizeof(cf);
2340     }
2341     // we can only change the format of the selection, so select the range we
2342     // want and restore the old selection later
2343     long startOld, endOld;
2344     GetSelection(&startOld, &endOld);
2345
2346     // but do we really have to change the selection?
2347     bool changeSel = position != startOld || position != endOld;
2348
2349     if ( changeSel )
2350     {
2351         DoSetSelection(position, position, FALSE /* don't scroll caret into view */);
2352     }
2353
2354     // get the selection formatting
2355     (void) ::SendMessage(GetHwnd(), EM_GETCHARFORMAT,
2356                             SCF_SELECTION, (LPARAM)&cf) ;
2357
2358     LOGFONT lf;
2359     lf.lfHeight = cf.yHeight;
2360     lf.lfWidth = 0;
2361     lf.lfCharSet = ANSI_CHARSET; // FIXME: how to get correct charset?
2362     lf.lfClipPrecision = 0;
2363     lf.lfEscapement = 0;
2364     wxStrcpy(lf.lfFaceName, cf.szFaceName);
2365     if (cf.dwEffects & CFE_ITALIC)
2366         lf.lfItalic = TRUE;
2367     lf.lfOrientation = 0;
2368     lf.lfPitchAndFamily = cf.bPitchAndFamily;
2369     lf.lfQuality = 0;
2370     if (cf.dwEffects & CFE_STRIKEOUT)
2371         lf.lfStrikeOut = TRUE;
2372     if (cf.dwEffects & CFE_UNDERLINE)
2373         lf.lfUnderline = TRUE;
2374     if (cf.dwEffects & CFE_BOLD)
2375         lf.lfWeight = FW_BOLD;
2376
2377     wxFont font = wxCreateFontFromLogFont(& lf);
2378     if (font.Ok())
2379     {
2380         style.SetFont(font);
2381     }
2382     style.SetTextColour(wxColour(cf.crTextColor));
2383
2384 #if wxUSE_RICHEDIT2
2385     if ( m_verRichEdit != 1 )
2386     {
2387         // cf.dwMask |= CFM_BACKCOLOR;
2388         style.SetBackgroundColour(wxColour(cf.crBackColor));
2389     }
2390 #endif // wxUSE_RICHEDIT2
2391
2392     // now get the paragraph formatting
2393     PARAFORMAT2 pf;
2394     wxZeroMemory(pf);
2395     // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2396     // PARAFORMAT in that case
2397 #if wxUSE_RICHEDIT2
2398     if ( m_verRichEdit == 1 )
2399     {
2400         // this is the only thing the control is going to grok
2401         pf.cbSize = sizeof(PARAFORMAT);
2402     }
2403     else
2404 #endif
2405     {
2406         // PARAFORMAT or PARAFORMAT2
2407         pf.cbSize = sizeof(pf);
2408     }
2409
2410     // do format the selection
2411     (void) ::SendMessage(GetHwnd(), EM_GETPARAFORMAT, 0, (LPARAM) &pf) ;
2412
2413     style.SetLeftIndent( (int) ((double) pf.dxStartIndent * twips2mm * 10.0) );
2414     style.SetRightIndent( (int) ((double) pf.dxRightIndent * twips2mm * 10.0) );
2415
2416     if (pf.wAlignment == PFA_CENTER)
2417         style.SetAlignment(wxTEXT_ALIGNMENT_CENTRE);
2418     else if (pf.wAlignment == PFA_RIGHT)
2419         style.SetAlignment(wxTEXT_ALIGNMENT_RIGHT);
2420     else if (pf.wAlignment == PFA_JUSTIFY)
2421         style.SetAlignment(wxTEXT_ALIGNMENT_JUSTIFIED);
2422     else
2423         style.SetAlignment(wxTEXT_ALIGNMENT_LEFT);
2424
2425     wxArrayInt tabStops;
2426     size_t i;
2427     for (i = 0; i < (size_t) pf.cTabCount; i++)
2428     {
2429         tabStops[i] = (int) ((double) (pf.rgxTabs[i] & 0xFFFF) * twips2mm * 10.0) ;
2430     }
2431
2432     if ( changeSel )
2433     {
2434         // restore the original selection
2435         DoSetSelection(startOld, endOld, FALSE);
2436     }
2437
2438     return TRUE;
2439 }
2440
2441 #endif
2442
2443 // ----------------------------------------------------------------------------
2444 // wxRichEditModule
2445 // ----------------------------------------------------------------------------
2446
2447 bool wxRichEditModule::OnInit()
2448 {
2449     // don't do anything - we will load it when needed
2450     return TRUE;
2451 }
2452
2453 void wxRichEditModule::OnExit()
2454 {
2455     for ( size_t i = 0; i < WXSIZEOF(ms_hRichEdit); i++ )
2456     {
2457         if ( ms_hRichEdit[i] )
2458         {
2459             ::FreeLibrary(ms_hRichEdit[i]);
2460             ms_hRichEdit[i] = NULL;
2461         }
2462     }
2463 }
2464
2465 /* static */
2466 bool wxRichEditModule::Load(int version)
2467 {
2468     // we don't support loading richedit 3.0 as I don't know how to distinguish
2469     // it from 2.0 anyhow
2470     wxCHECK_MSG( version == 1 || version == 2, FALSE,
2471                  _T("incorrect richedit control version requested") );
2472
2473     // make it the index in the array
2474     version--;
2475
2476     if ( ms_hRichEdit[version] == (HINSTANCE)-1 )
2477     {
2478         // we had already tried to load it and failed
2479         return FALSE;
2480     }
2481
2482     if ( ms_hRichEdit[version] )
2483     {
2484         // we've already got this one
2485         return TRUE;
2486     }
2487
2488     wxString dllname = version ? _T("riched20") : _T("riched32");
2489     dllname += _T(".dll");
2490
2491     ms_hRichEdit[version] = ::LoadLibrary(dllname);
2492
2493     if ( !ms_hRichEdit[version] )
2494     {
2495         wxLogSysError(_("Could not load Rich Edit DLL '%s'"), dllname.c_str());
2496
2497         ms_hRichEdit[version] = (HINSTANCE)-1;
2498
2499         return FALSE;
2500     }
2501
2502     return TRUE;
2503 }
2504
2505 #endif // wxUSE_RICHEDIT
2506
2507 #endif // wxUSE_TEXTCTRL