src/msw/textctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        msw/textctrl.cpp
   3 // Purpose:     wxTextCtrl
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 #ifdef __GNUG__
  17     #pragma implementation "textctrl.h"
  18 #endif
  19
  20 // ----------------------------------------------------------------------------
  21 // headers
  22 // ----------------------------------------------------------------------------
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/textctrl.h"
  33     #include "wx/settings.h"
  34     #include "wx/brush.h"
  35     #include "wx/utils.h"
  36     #include "wx/intl.h"
  37     #include "wx/log.h"
  38     #include "wx/app.h"
  39 #endif
  40
  41 #include "wx/module.h"
  42
  43 #if wxUSE_CLIPBOARD
  44     #include "wx/clipbrd.h"
  45 #endif
  46
  47 #include "wx/textfile.h"
  48
  49 #include <windowsx.h>
  50
  51 #include "wx/msw/private.h"
  52
  53 #include <string.h>
  54 #include <stdlib.h>
  55 #include <sys/types.h>
  56
  57 #if wxUSE_RICHEDIT && (!defined(__GNUWIN32_OLD__) || defined(__CYGWIN10__))
  58     #include <richedit.h>
  59 #endif
  60
  61 // old mingw32 doesn't define this
  62 #ifndef CFM_CHARSET
  63     #define CFM_CHARSET 0x08000000
  64 #endif // CFM_CHARSET
  65
  66 // ----------------------------------------------------------------------------
  67 // private classes
  68 // ----------------------------------------------------------------------------
  69
  70 #if wxUSE_RICHEDIT
  71
  72 // this module initializes RichEdit DLL if needed
  73 class wxRichEditModule : public wxModule
  74 {
  75 public:
  76     virtual bool OnInit();
  77     virtual void OnExit();
  78
  79     // get the version currently loaded, -1 if none
  80     static int GetLoadedVersion() { return ms_verRichEdit; }
  81
  82     // load the richedit DLL of at least of required version
  83     static bool Load(int version = 1);
  84
  85 private:
  86     // the handle to richedit DLL and the version of the DLL loaded
  87     static HINSTANCE ms_hRichEdit;
  88
  89     // the DLL version loaded or -1 if none
  90     static int ms_verRichEdit;
  91
  92     DECLARE_DYNAMIC_CLASS(wxRichEditModule)
  93 };
  94
  95 HINSTANCE wxRichEditModule::ms_hRichEdit = (HINSTANCE)NULL;
  96 int       wxRichEditModule::ms_verRichEdit = -1;
  97
  98 IMPLEMENT_DYNAMIC_CLASS(wxRichEditModule, wxModule)
  99
 100 #endif // wxUSE_RICHEDIT
 101
 102 // ----------------------------------------------------------------------------
 103 // event tables and other macros
 104 // ----------------------------------------------------------------------------
 105
 106 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxControl)
 107
 108 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
 109     EVT_CHAR(wxTextCtrl::OnChar)
 110     EVT_DROP_FILES(wxTextCtrl::OnDropFiles)
 111
 112     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 113     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 114     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 115     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 116     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 117
 118     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 119     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 120     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 121     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 122     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 123 #ifdef __WIN16__
 124     EVT_ERASE_BACKGROUND(wxTextCtrl::OnEraseBackground)
 125 #endif
 126 END_EVENT_TABLE()
 127
 128 // ============================================================================
 129 // implementation
 130 // ============================================================================
 131
 132 // ----------------------------------------------------------------------------
 133 // creation
 134 // ----------------------------------------------------------------------------
 135
 136 wxTextCtrl::wxTextCtrl()
 137 {
 138 #if wxUSE_RICHEDIT
 139     m_isRich = FALSE;
 140 #endif
 141 }
 142
 143 bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id,
 144                         const wxString& value,
 145                         const wxPoint& pos,
 146                         const wxSize& size,
 147                         long style,
 148                         const wxValidator& validator,
 149                         const wxString& name)
 150 {
 151     // base initialization
 152     if ( !CreateBase(parent, id, pos, size, style, validator, name) )
 153         return FALSE;
 154
 155     if ( parent )
 156         parent->AddChild(this);
 157
 158     // translate wxWin style flags to MSW ones, checking for consistency while
 159     // doing it
 160     long msStyle = ES_LEFT | WS_VISIBLE | WS_CHILD | WS_TABSTOP;
 161
 162     if ( m_windowStyle & wxCLIP_SIBLINGS )
 163         msStyle |= WS_CLIPSIBLINGS;
 164
 165     if ( m_windowStyle & wxTE_MULTILINE )
 166     {
 167         wxASSERT_MSG( !(m_windowStyle & wxTE_PROCESS_ENTER),
 168                       wxT("wxTE_PROCESS_ENTER style is ignored for multiline text controls (they always process it)") );
 169
 170         msStyle |= ES_MULTILINE | ES_WANTRETURN;
 171         if ((m_windowStyle & wxTE_NO_VSCROLL) == 0)
 172             msStyle |= WS_VSCROLL;
 173         m_windowStyle |= wxTE_PROCESS_ENTER;
 174     }
 175     else
 176         msStyle |= ES_AUTOHSCROLL;
 177
 178     if (m_windowStyle & wxHSCROLL)
 179         msStyle |= (WS_HSCROLL | ES_AUTOHSCROLL);
 180
 181     if (m_windowStyle & wxTE_READONLY)
 182         msStyle |= ES_READONLY;
 183
 184     if (m_windowStyle & wxTE_PASSWORD) // hidden input
 185         msStyle |= ES_PASSWORD;
 186
 187    if (m_windowStyle & wxTE_AUTO_SCROLL)
 188         msStyle |=  ES_AUTOHSCROLL;
 189
 190
 191     // we always want the characters and the arrows
 192     m_lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
 193
 194     // we may have several different cases:
 195     // 1. normal case: both TAB and ENTER are used for dialog navigation
 196     // 2. ctrl which wants TAB for itself: ENTER is used to pass to the next
 197     //    control in the dialog
 198     // 3. ctrl which wants ENTER for itself: TAB is used for dialog navigation
 199     // 4. ctrl which wants both TAB and ENTER: Ctrl-ENTER is used to pass to
 200     //    the next control
 201     if ( m_windowStyle & wxTE_PROCESS_ENTER )
 202         m_lDlgCode |= DLGC_WANTMESSAGE;
 203     if ( m_windowStyle & wxTE_PROCESS_TAB )
 204         m_lDlgCode |= DLGC_WANTTAB;
 205
 206     // do create the control - either an EDIT or RICHEDIT
 207     wxString windowClass = wxT("EDIT");
 208
 209 #if wxUSE_RICHEDIT
 210     if ( m_windowStyle & wxTE_RICH )
 211     {
 212         static bool s_errorGiven = FALSE;   // MT-FIXME
 213
 214         // only give the error msg once if the DLL can't be loaded
 215         if ( !s_errorGiven )
 216         {
 217             // first try to load the RichEdit DLL (will do nothing if already
 218             // done)
 219             if ( !wxRichEditModule::Load() )
 220             {
 221                 wxLogError(_("Impossible to create a rich edit control, using simple text control instead. Please reinstall riched32.dll"));
 222
 223                 s_errorGiven = TRUE;
 224             }
 225         }
 226
 227         if ( s_errorGiven )
 228         {
 229             m_isRich = FALSE;
 230         }
 231         else
 232         {
 233             msStyle |= ES_AUTOVSCROLL;
 234             m_isRich = TRUE;
 235
 236             int ver = wxRichEditModule::GetLoadedVersion();
 237             if ( ver == 1 )
 238             {
 239                 windowClass = wxT("RICHEDIT");
 240             }
 241             else
 242             {
 243 #ifndef RICHEDIT_CLASS
 244                 wxString RICHEDIT_CLASS;
 245                 RICHEDIT_CLASS.Printf(_T("RichEdit%d0"), ver);
 246 #if wxUSE_UNICODE
 247                 RICHEDIT_CLASS += _T('W');
 248 #else // ANSI
 249                 RICHEDIT_CLASS += _T('A');
 250 #endif // Unicode/ANSI
 251 #endif // !RICHEDIT_CLASS
 252
 253                 windowClass = RICHEDIT_CLASS;
 254             }
 255         }
 256     }
 257     else
 258         m_isRich = FALSE;
 259 #endif // wxUSE_RICHEDIT
 260
 261     bool want3D;
 262     WXDWORD exStyle = Determine3DEffects(WS_EX_CLIENTEDGE, &want3D);
 263
 264     // Even with extended styles, need to combine with WS_BORDER for them to
 265     // look right.
 266     if ( want3D || wxStyleHasBorder(m_windowStyle) )
 267         msStyle |= WS_BORDER;
 268
 269     // NB: don't use pos and size as CreateWindowEx arguments because they
 270     //     might be -1 in which case we should use the default values (and
 271     //     SetSize called below takes care of it)
 272     m_hWnd = (WXHWND)::CreateWindowEx(exStyle,
 273                                       windowClass.c_str(),
 274                                       NULL,
 275                                       msStyle,
 276                                       0, 0, 0, 0,
 277                                       GetHwndOf(parent),
 278                                       (HMENU)m_windowId,
 279                                       wxGetInstance(),
 280                                       NULL);
 281
 282     wxCHECK_MSG( m_hWnd, FALSE, wxT("Failed to create text ctrl") );
 283
 284 #if wxUSE_CTL3D
 285     if ( want3D )
 286     {
 287         Ctl3dSubclassCtl(GetHwnd());
 288         m_useCtl3D = TRUE;
 289     }
 290 #endif
 291
 292 #if wxUSE_RICHEDIT
 293     if (m_isRich)
 294     {
 295         // Have to enable events
 296         ::SendMessage(GetHwnd(), EM_SETEVENTMASK, 0,
 297                       ENM_CHANGE | ENM_DROPFILES | ENM_SELCHANGE | ENM_UPDATE);
 298     }
 299 #endif
 300
 301     SubclassWin(GetHWND());
 302
 303     // set font, position, size and initial value
 304     wxFont& fontParent = parent->GetFont();
 305     if ( fontParent.Ok() )
 306     {
 307         SetFont(fontParent);
 308     }
 309     else
 310     {
 311         SetFont(wxSystemSettings::GetSystemFont(wxSYS_SYSTEM_FONT));
 312     }
 313
 314     // Causes a crash for Symantec C++ and WIN32 for some reason
 315 #if !(defined(__SC__) && defined(__WIN32__))
 316     if ( !value.IsEmpty() )
 317     {
 318         SetValue(value);
 319     }
 320 #endif
 321
 322     // set colours
 323     SetupColours();
 324
 325     SetSize(pos.x, pos.y, size.x, size.y);
 326
 327     return TRUE;
 328 }
 329
 330 // Make sure the window style (etc.) reflects the HWND style (roughly)
 331 void wxTextCtrl::AdoptAttributesFromHWND()
 332 {
 333   wxWindow::AdoptAttributesFromHWND();
 334
 335   HWND hWnd = GetHwnd();
 336   long style = GetWindowLong(hWnd, GWL_STYLE);
 337
 338   // retrieve the style to see whether this is an edit or richedit ctrl
 339 #if wxUSE_RICHEDIT
 340   wxChar buf[256];
 341
 342   GetClassName(hWnd, buf, WXSIZEOF(buf));
 343
 344   if ( wxStricmp(buf, wxT("EDIT")) == 0 )
 345     m_isRich = FALSE;
 346   else
 347     m_isRich = TRUE;
 348 #endif // wxUSE_RICHEDIT
 349
 350   if (style & ES_MULTILINE)
 351     m_windowStyle |= wxTE_MULTILINE;
 352   if (style & ES_PASSWORD)
 353     m_windowStyle |= wxTE_PASSWORD;
 354   if (style & ES_READONLY)
 355     m_windowStyle |= wxTE_READONLY;
 356   if (style & ES_WANTRETURN)
 357     m_windowStyle |= wxTE_PROCESS_ENTER;
 358 }
 359
 360 void wxTextCtrl::SetupColours()
 361 {
 362     wxColour bkgndColour;
 363 //    if (IsEditable() || (m_windowStyle & wxTE_MULTILINE))
 364         bkgndColour = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOW);
 365 //    else
 366 //        bkgndColour = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE);
 367
 368     SetBackgroundColour(bkgndColour);
 369     SetForegroundColour(GetParent()->GetForegroundColour());
 370 }
 371
 372 // ----------------------------------------------------------------------------
 373 // set/get the controls text
 374 // ----------------------------------------------------------------------------
 375
 376 wxString wxTextCtrl::GetValue() const
 377 {
 378     // we can't use wxGetWindowText() (i.e. WM_GETTEXT internally) for
 379     // retrieving more than 64Kb under Win9x
 380 #if wxUSE_RICHEDIT
 381     if ( m_isRich )
 382     {
 383         wxString str;
 384
 385         int len = GetWindowTextLength(GetHwnd());
 386         if ( len )
 387         {
 388             // alloc one extra WORD as needed by the control
 389             wxChar *p = str.GetWriteBuf(++len);
 390
 391             TEXTRANGE textRange;
 392             textRange.chrg.cpMin = 0;
 393             textRange.chrg.cpMax = -1;
 394             textRange.lpstrText = p;
 395
 396             (void)SendMessage(GetHwnd(), EM_GETTEXTRANGE, 0, (LPARAM)&textRange);
 397
 398             // believe it or not, but EM_GETTEXTRANGE uses just CR ('\r') for
 399             // the newlines which is neither Unix nor Windows style (Win95 with
 400             // riched20.dll shows this behaviour) - convert it to something
 401             // reasonable
 402             for ( ; *p; p++ )
 403             {
 404                 if ( *p == _T('\r') )
 405                     *p = _T('\n');
 406             }
 407
 408             str.UngetWriteBuf();
 409         }
 410         //else: no text at all, leave the string empty
 411
 412         return str;
 413     }
 414 #endif // wxUSE_RICHEDIT
 415
 416     // WM_GETTEXT uses standard DOS CR+LF (\r\n) convention - convert to the
 417     // same one as above for consitency
 418     wxString str = wxGetWindowText(GetHWND());
 419
 420     return wxTextFile::Translate(str, wxTextFileType_Unix);
 421 }
 422
 423 void wxTextCtrl::SetValue(const wxString& value)
 424 {
 425     // if the text is long enough, it's faster to just set it instead of first
 426     // comparing it with the old one (chances are that it will be different
 427     // anyhow, this comparison is there to avoid flicker for small single-line
 428     // edit controls mostly)
 429     if ( (value.length() > 0x400) || (value != GetValue()) )
 430     {
 431         wxString valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
 432
 433         SetWindowText(GetHwnd(), valueDos.c_str());
 434
 435         // for compatibility with the GTK and because it is more logical, we
 436         // move the cursor to the end of the text after SetValue()
 437
 438         // GRG, Jun/2000: Changed this back after a lot of discussion
 439         //   in the lists. wxWindows 2.2 will have a set of flags to
 440         //   customize this behaviour.
 441         //SetInsertionPointEnd();
 442
 443         AdjustSpaceLimit();
 444     }
 445 }
 446
 447 void wxTextCtrl::WriteText(const wxString& value)
 448 {
 449     wxString valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
 450
 451 #if wxUSE_RICHEDIT
 452     // ensure that the new text will be in the default style
 453     if ( IsRich() &&
 454             (m_defaultStyle.HasFont() || m_defaultStyle.HasTextColour()) )
 455     {
 456         long start, end;
 457         GetSelection(&start, &end);
 458         SetStyle(start, end, m_defaultStyle );
 459     }
 460 #endif // wxUSE_RICHEDIT
 461
 462     SendMessage(GetHwnd(), EM_REPLACESEL, 0, (LPARAM)valueDos.c_str());
 463
 464     AdjustSpaceLimit();
 465 }
 466
 467 void wxTextCtrl::AppendText(const wxString& text)
 468 {
 469     SetInsertionPointEnd();
 470     WriteText(text);
 471 }
 472
 473 void wxTextCtrl::Clear()
 474 {
 475     SetWindowText(GetHwnd(), wxT(""));
 476 }
 477
 478 // ----------------------------------------------------------------------------
 479 // Clipboard operations
 480 // ----------------------------------------------------------------------------
 481
 482 void wxTextCtrl::Copy()
 483 {
 484     if (CanCopy())
 485     {
 486         HWND hWnd = GetHwnd();
 487         SendMessage(hWnd, WM_COPY, 0, 0L);
 488     }
 489 }
 490
 491 void wxTextCtrl::Cut()
 492 {
 493     if (CanCut())
 494     {
 495         HWND hWnd = GetHwnd();
 496         SendMessage(hWnd, WM_CUT, 0, 0L);
 497     }
 498 }
 499
 500 void wxTextCtrl::Paste()
 501 {
 502     if (CanPaste())
 503     {
 504         HWND hWnd = GetHwnd();
 505         SendMessage(hWnd, WM_PASTE, 0, 0L);
 506     }
 507 }
 508
 509 bool wxTextCtrl::CanCopy() const
 510 {
 511     // Can copy if there's a selection
 512     long from, to;
 513     GetSelection(& from, & to);
 514     return (from != to) ;
 515 }
 516
 517 bool wxTextCtrl::CanCut() const
 518 {
 519     // Can cut if there's a selection
 520     long from, to;
 521     GetSelection(& from, & to);
 522     return (from != to) && (IsEditable());
 523 }
 524
 525 bool wxTextCtrl::CanPaste() const
 526 {
 527 #if wxUSE_RICHEDIT
 528     if (m_isRich)
 529     {
 530         int dataFormat = 0; // 0 == any format
 531         return (::SendMessage( GetHwnd(), EM_CANPASTE, (WPARAM) (UINT) dataFormat, 0) != 0);
 532     }
 533 #endif
 534     if (!IsEditable())
 535         return FALSE;
 536
 537     // Standard edit control: check for straight text on clipboard
 538     bool isTextAvailable = FALSE;
 539     if ( ::OpenClipboard(GetHwndOf(wxTheApp->GetTopWindow())) )
 540     {
 541         isTextAvailable = (::IsClipboardFormatAvailable(CF_TEXT) != 0);
 542         ::CloseClipboard();
 543     }
 544
 545     return isTextAvailable;
 546 }
 547
 548 // ----------------------------------------------------------------------------
 549 // Accessors
 550 // ----------------------------------------------------------------------------
 551
 552 void wxTextCtrl::SetEditable(bool editable)
 553 {
 554     HWND hWnd = GetHwnd();
 555     SendMessage(hWnd, EM_SETREADONLY, (WPARAM)!editable, (LPARAM)0L);
 556 }
 557
 558 void wxTextCtrl::SetInsertionPoint(long pos)
 559 {
 560     HWND hWnd = GetHwnd();
 561 #ifdef __WIN32__
 562 #if wxUSE_RICHEDIT
 563     if ( m_isRich)
 564     {
 565         CHARRANGE range;
 566         range.cpMin = pos;
 567         range.cpMax = pos;
 568         SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM) &range);
 569         SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
 570     }
 571     else
 572 #endif // wxUSE_RICHEDIT
 573     {
 574         SendMessage(hWnd, EM_SETSEL, pos, pos);
 575         SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
 576     }
 577 #else // Win16
 578     SendMessage(hWnd, EM_SETSEL, 0, MAKELPARAM(pos, pos));
 579 #endif // Win32/16
 580
 581     static const wxChar *nothing = _T("");
 582     SendMessage(hWnd, EM_REPLACESEL, 0, (LPARAM)nothing);
 583 }
 584
 585 void wxTextCtrl::SetInsertionPointEnd()
 586 {
 587     long pos = GetLastPosition();
 588     SetInsertionPoint(pos);
 589 }
 590
 591 long wxTextCtrl::GetInsertionPoint() const
 592 {
 593 #if wxUSE_RICHEDIT
 594     if (m_isRich)
 595     {
 596         CHARRANGE range;
 597         range.cpMin = 0;
 598         range.cpMax = 0;
 599         SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
 600         return range.cpMin;
 601     }
 602 #endif
 603
 604     DWORD Pos = (DWORD)SendMessage(GetHwnd(), EM_GETSEL, 0, 0L);
 605     return Pos & 0xFFFF;
 606 }
 607
 608 long wxTextCtrl::GetLastPosition() const
 609 {
 610     HWND hWnd = GetHwnd();
 611
 612     // Will always return a number > 0 (according to docs)
 613     int noLines = (int)SendMessage(hWnd, EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0L);
 614
 615     // This gets the char index for the _beginning_ of the last line
 616     int charIndex = (int)SendMessage(hWnd, EM_LINEINDEX, (WPARAM)(noLines-1), (LPARAM)0L);
 617
 618     // Get number of characters in the last line. We'll add this to the character
 619     // index for the last line, 1st position.
 620     int lineLength = (int)SendMessage(hWnd, EM_LINELENGTH, (WPARAM)charIndex, (LPARAM)0L);
 621
 622     return (long)(charIndex + lineLength);
 623 }
 624
 625 // If the return values from and to are the same, there is no
 626 // selection.
 627 void wxTextCtrl::GetSelection(long* from, long* to) const
 628 {
 629 #if wxUSE_RICHEDIT
 630     if (m_isRich)
 631     {
 632         CHARRANGE charRange;
 633         ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) (CHARRANGE*) & charRange);
 634
 635         *from = charRange.cpMin;
 636         *to = charRange.cpMax;
 637     }
 638     else
 639 #endif // rich/!rich
 640     {
 641         DWORD dwStart, dwEnd;
 642         WPARAM wParam = (WPARAM) &dwStart; // receives starting position
 643         LPARAM lParam = (LPARAM) &dwEnd;   // receives ending position
 644
 645         ::SendMessage(GetHwnd(), EM_GETSEL, wParam, lParam);
 646
 647         *from = dwStart;
 648         *to = dwEnd;
 649     }
 650 }
 651
 652 bool wxTextCtrl::IsEditable() const
 653 {
 654     long style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
 655
 656     return ((style & ES_READONLY) == 0);
 657 }
 658
 659 // ----------------------------------------------------------------------------
 660 // Editing
 661 // ----------------------------------------------------------------------------
 662
 663 void wxTextCtrl::Replace(long from, long to, const wxString& value)
 664 {
 665 #if wxUSE_CLIPBOARD
 666     HWND hWnd = GetHwnd();
 667     long fromChar = from;
 668     long toChar = to;
 669
 670     // Set selection and remove it
 671 #ifdef __WIN32__
 672     SendMessage(hWnd, EM_SETSEL, fromChar, toChar);
 673 #else
 674     SendMessage(hWnd, EM_SETSEL, (WPARAM)0, (LPARAM)MAKELONG(fromChar, toChar));
 675 #endif
 676     SendMessage(hWnd, WM_CUT, (WPARAM)0, (LPARAM)0);
 677
 678     // Now replace with 'value', by pasting.
 679     wxSetClipboardData(wxDF_TEXT, (wxObject *) (const wxChar *)value, 0, 0);
 680
 681     // Paste into edit control
 682     SendMessage(hWnd, WM_PASTE, (WPARAM)0, (LPARAM)0L);
 683 #else
 684     wxFAIL_MSG("wxTextCtrl::Replace not implemented if wxUSE_CLIPBOARD is 0.");
 685 #endif
 686 }
 687
 688 void wxTextCtrl::Remove(long from, long to)
 689 {
 690     HWND hWnd = GetHwnd();
 691     long fromChar = from;
 692     long toChar = to;
 693
 694     // Cut all selected text
 695 #ifdef __WIN32__
 696     SendMessage(hWnd, EM_SETSEL, fromChar, toChar);
 697 #else
 698     SendMessage(hWnd, EM_SETSEL, (WPARAM)0, (LPARAM)MAKELONG(fromChar, toChar));
 699 #endif
 700     SendMessage(hWnd, WM_CUT, (WPARAM)0, (LPARAM)0);
 701 }
 702
 703 void wxTextCtrl::SetSelection(long from, long to)
 704 {
 705     HWND hWnd = GetHwnd();
 706     long fromChar = from;
 707     long toChar = to;
 708
 709     // if from and to are both -1, it means (in wxWindows) that all text should
 710     // be selected. Translate into Windows convention
 711     if ((from == -1) && (to == -1))
 712     {
 713       fromChar = 0;
 714       toChar = -1;
 715     }
 716
 717 #ifdef __WIN32__
 718     SendMessage(hWnd, EM_SETSEL, (WPARAM)fromChar, (LPARAM)toChar);
 719     SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
 720 #else
 721     // WPARAM is 0: selection is scrolled into view
 722     SendMessage(hWnd, EM_SETSEL, (WPARAM)0, (LPARAM)MAKELONG(fromChar, toChar));
 723 #endif
 724 }
 725
 726 bool wxTextCtrl::LoadFile(const wxString& file)
 727 {
 728     if ( wxTextCtrlBase::LoadFile(file) )
 729     {
 730         // update the size limit if needed
 731         AdjustSpaceLimit();
 732
 733         return TRUE;
 734     }
 735
 736     return FALSE;
 737 }
 738
 739 bool wxTextCtrl::IsModified() const
 740 {
 741     return (SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0);
 742 }
 743
 744 // Makes 'unmodified'
 745 void wxTextCtrl::DiscardEdits()
 746 {
 747     SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0L);
 748 }
 749
 750 int wxTextCtrl::GetNumberOfLines() const
 751 {
 752     return (int)SendMessage(GetHwnd(), EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0);
 753 }
 754
 755 long wxTextCtrl::XYToPosition(long x, long y) const
 756 {
 757     HWND hWnd = GetHwnd();
 758
 759     // This gets the char index for the _beginning_ of this line
 760     int charIndex = (int)SendMessage(hWnd, EM_LINEINDEX, (WPARAM)y, (LPARAM)0);
 761     return (long)(x + charIndex);
 762 }
 763
 764 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
 765 {
 766     HWND hWnd = GetHwnd();
 767
 768     // This gets the line number containing the character
 769     int lineNo;
 770 #if wxUSE_RICHEDIT
 771     if ( m_isRich )
 772     {
 773         lineNo = (int)SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, (LPARAM)pos);
 774     }
 775     else
 776 #endif // wxUSE_RICHEDIT
 777         lineNo = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, 0);
 778
 779     if ( lineNo == -1 )
 780     {
 781         // no such line
 782         return FALSE;
 783     }
 784
 785     // This gets the char index for the _beginning_ of this line
 786     int charIndex = (int)SendMessage(hWnd, EM_LINEINDEX, (WPARAM)lineNo, (LPARAM)0);
 787     if ( charIndex == -1 )
 788     {
 789         return FALSE;
 790     }
 791
 792     // The X position must therefore be the different between pos and charIndex
 793     if ( x )
 794         *x = (long)(pos - charIndex);
 795     if ( y )
 796         *y = (long)lineNo;
 797
 798     return TRUE;
 799 }
 800
 801 void wxTextCtrl::ShowPosition(long pos)
 802 {
 803     HWND hWnd = GetHwnd();
 804
 805     // To scroll to a position, we pass the number of lines and characters
 806     // to scroll *by*. This means that we need to:
 807     // (1) Find the line position of the current line.
 808     // (2) Find the line position of pos.
 809     // (3) Scroll by (pos - current).
 810     // For now, ignore the horizontal scrolling.
 811
 812     // Is this where scrolling is relative to - the line containing the caret?
 813     // Or is the first visible line??? Try first visible line.
 814 //    int currentLineLineNo1 = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)-1, (LPARAM)0L);
 815
 816     int currentLineLineNo = (int)SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, (WPARAM)0, (LPARAM)0L);
 817
 818     int specifiedLineLineNo = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, (LPARAM)0L);
 819
 820     int linesToScroll = specifiedLineLineNo - currentLineLineNo;
 821
 822     if (linesToScroll != 0)
 823       (void)SendMessage(hWnd, EM_LINESCROLL, (WPARAM)0, (LPARAM)linesToScroll);
 824 }
 825
 826 int wxTextCtrl::GetLineLength(long lineNo) const
 827 {
 828     long charIndex = XYToPosition(0, lineNo);
 829     int len = (int)SendMessage(GetHwnd(), EM_LINELENGTH, charIndex, 0);
 830     return len;
 831 }
 832
 833 wxString wxTextCtrl::GetLineText(long lineNo) const
 834 {
 835     size_t len = (size_t)GetLineLength(lineNo) + 1;
 836
 837     // there must be at least enough place for the length WORD in the
 838     // buffer
 839     len += sizeof(WORD);
 840
 841     wxString str;
 842     wxChar *buf = str.GetWriteBuf(len);
 843
 844     *(WORD *)buf = (WORD)len;
 845     len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf);
 846     buf[len] = 0;
 847
 848     str.UngetWriteBuf(len);
 849
 850     return str;
 851 }
 852
 853 // ----------------------------------------------------------------------------
 854 // Undo/redo
 855 // ----------------------------------------------------------------------------
 856
 857 void wxTextCtrl::Undo()
 858 {
 859     if (CanUndo())
 860     {
 861         ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
 862     }
 863 }
 864
 865 void wxTextCtrl::Redo()
 866 {
 867     if (CanRedo())
 868     {
 869         // Same as Undo, since Undo undoes the undo, i.e. a redo.
 870         ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
 871     }
 872 }
 873
 874 bool wxTextCtrl::CanUndo() const
 875 {
 876     return (::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0);
 877 }
 878
 879 bool wxTextCtrl::CanRedo() const
 880 {
 881     return (::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0);
 882 }
 883
 884 // ----------------------------------------------------------------------------
 885 // implemenation details
 886 // ----------------------------------------------------------------------------
 887
 888 void wxTextCtrl::Command(wxCommandEvent & event)
 889 {
 890     SetValue(event.GetString());
 891     ProcessCommand (event);
 892 }
 893
 894 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
 895 {
 896     // By default, load the first file into the text window.
 897     if (event.GetNumberOfFiles() > 0)
 898     {
 899         LoadFile(event.GetFiles()[0]);
 900     }
 901 }
 902
 903 void wxTextCtrl::OnChar(wxKeyEvent& event)
 904 {
 905     switch ( event.KeyCode() )
 906     {
 907         case WXK_RETURN:
 908             if ( !(m_windowStyle & wxTE_MULTILINE) )
 909             {
 910                 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
 911                 InitCommandEvent(event);
 912                 event.SetString(GetValue());
 913                 if ( GetEventHandler()->ProcessEvent(event) )
 914                     return;
 915             }
 916             //else: multiline controls need Enter for themselves
 917
 918             break;
 919
 920         case WXK_TAB:
 921             // always produce navigation event - even if we process TAB
 922             // ourselves the fact that we got here means that the user code
 923             // decided to skip processing of this TAB - probably to let it
 924             // do its default job.
 925             {
 926                 wxNavigationKeyEvent eventNav;
 927                 eventNav.SetDirection(!event.ShiftDown());
 928                 eventNav.SetWindowChange(event.ControlDown());
 929                 eventNav.SetEventObject(this);
 930
 931                 if ( GetParent()->GetEventHandler()->ProcessEvent(eventNav) )
 932                     return;
 933             }
 934             break;
 935     }
 936
 937     // no, we didn't process it
 938     event.Skip();
 939 }
 940
 941 bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
 942 {
 943     switch (param)
 944     {
 945         case EN_SETFOCUS:
 946         case EN_KILLFOCUS:
 947             {
 948                 wxFocusEvent event(param == EN_KILLFOCUS ? wxEVT_KILL_FOCUS
 949                         : wxEVT_SET_FOCUS,
 950                         m_windowId);
 951                 event.SetEventObject( this );
 952                 GetEventHandler()->ProcessEvent(event);
 953             }
 954             break;
 955
 956         case EN_CHANGE:
 957             {
 958                 wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, m_windowId);
 959                 InitCommandEvent(event);
 960                 event.SetString(GetValue());
 961                 ProcessCommand(event);
 962             }
 963             break;
 964
 965         case EN_MAXTEXT:
 966             // the text size limit has been hit - increase it
 967             AdjustSpaceLimit();
 968             break;
 969
 970             // the other notification messages are not processed
 971         case EN_UPDATE:
 972         case EN_ERRSPACE:
 973         case EN_HSCROLL:
 974         case EN_VSCROLL:
 975             return FALSE;
 976         default:
 977             return FALSE;
 978     }
 979
 980     // processed
 981     return TRUE;
 982 }
 983
 984 WXHBRUSH wxTextCtrl::OnCtlColor(WXHDC pDC, WXHWND WXUNUSED(pWnd), WXUINT WXUNUSED(nCtlColor),
 985 #if wxUSE_CTL3D
 986                                WXUINT message,
 987                                WXWPARAM wParam,
 988                                WXLPARAM lParam
 989 #else
 990                                WXUINT WXUNUSED(message),
 991                                WXWPARAM WXUNUSED(wParam),
 992                                WXLPARAM WXUNUSED(lParam)
 993 #endif
 994     )
 995 {
 996 #if wxUSE_CTL3D
 997     if ( m_useCtl3D )
 998     {
 999         HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
1000         return (WXHBRUSH) hbrush;
1001     }
1002 #endif // wxUSE_CTL3D
1003
1004     HDC hdc = (HDC)pDC;
1005     if (GetParent()->GetTransparentBackground())
1006         SetBkMode(hdc, TRANSPARENT);
1007     else
1008         SetBkMode(hdc, OPAQUE);
1009
1010     wxColour colBack = GetBackgroundColour();
1011
1012     if (!IsEnabled() && (GetWindowStyle() & wxTE_MULTILINE) == 0)
1013         colBack = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE);
1014
1015     ::SetBkColor(hdc, wxColourToRGB(colBack));
1016     ::SetTextColor(hdc, wxColourToRGB(GetForegroundColour()));
1017
1018     wxBrush *brush = wxTheBrushList->FindOrCreateBrush(colBack, wxSOLID);
1019
1020     return (WXHBRUSH)brush->GetResourceHandle();
1021 }
1022
1023 // In WIN16, need to override normal erasing because
1024 // Ctl3D doesn't use the wxWindows background colour.
1025 #ifdef __WIN16__
1026 void wxTextCtrl::OnEraseBackground(wxEraseEvent& event)
1027 {
1028     wxColour col(m_backgroundColour);
1029
1030 #if wxUSE_CTL3D
1031     if (m_useCtl3D)
1032         col = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOW);
1033 #endif
1034
1035     RECT rect;
1036     ::GetClientRect(GetHwnd(), &rect);
1037
1038     COLORREF ref = PALETTERGB(col.Red(),
1039                               col.Green(),
1040                               col.Blue());
1041     HBRUSH hBrush = ::CreateSolidBrush(ref);
1042     if ( !hBrush )
1043         wxLogLastError(wxT("CreateSolidBrush"));
1044
1045     HDC hdc = (HDC)event.GetDC()->GetHDC();
1046
1047     int mode = ::SetMapMode(hdc, MM_TEXT);
1048
1049     ::FillRect(hdc, &rect, hBrush);
1050     ::DeleteObject(hBrush);
1051     ::SetMapMode(hdc, mode);
1052
1053 }
1054 #endif
1055
1056 void wxTextCtrl::AdjustSpaceLimit()
1057 {
1058 #ifndef __WIN16__
1059     unsigned int len = ::GetWindowTextLength(GetHwnd()),
1060     limit = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
1061     if ( len >= limit )
1062     {
1063         limit = len + 0x8000;    // 32Kb
1064
1065 #if wxUSE_RICHEDIT
1066         if ( m_isRich )
1067         {
1068             // as a nice side effect, this also allows passing limit > 64Kb
1069             ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, limit);
1070         }
1071         else
1072 #endif // wxUSE_RICHEDIT
1073         {
1074             if ( limit > 0xffff )
1075             {
1076                 // this will set it to a platform-dependent maximum (much more
1077                 // than 64Kb under NT)
1078                 limit = 0;
1079             }
1080
1081             ::SendMessage(GetHwnd(), EM_LIMITTEXT, limit, 0);
1082         }
1083     }
1084 #endif // !Win16
1085 }
1086
1087 bool wxTextCtrl::AcceptsFocus() const
1088 {
1089     // we don't want focus if we can't be edited
1090     return IsEditable() && wxControl::AcceptsFocus();
1091 }
1092
1093 wxSize wxTextCtrl::DoGetBestSize() const
1094 {
1095     int cx, cy;
1096     wxGetCharSize(GetHWND(), &cx, &cy, &GetFont());
1097
1098     int wText = DEFAULT_ITEM_WIDTH;
1099
1100     int hText = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy);
1101     if ( m_windowStyle & wxTE_MULTILINE )
1102     {
1103         hText *= wxMax(GetNumberOfLines(), 5);
1104     }
1105     //else: for single line control everything is ok
1106
1107     return wxSize(wText, hText);
1108 }
1109
1110 // ----------------------------------------------------------------------------
1111 // standard handlers for standard edit menu events
1112 // ----------------------------------------------------------------------------
1113
1114 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1115 {
1116     Cut();
1117 }
1118
1119 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1120 {
1121     Copy();
1122 }
1123
1124 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1125 {
1126     Paste();
1127 }
1128
1129 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1130 {
1131     Undo();
1132 }
1133
1134 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1135 {
1136     Redo();
1137 }
1138
1139 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1140 {
1141     event.Enable( CanCut() );
1142 }
1143
1144 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1145 {
1146     event.Enable( CanCopy() );
1147 }
1148
1149 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1150 {
1151     event.Enable( CanPaste() );
1152 }
1153
1154 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1155 {
1156     event.Enable( CanUndo() );
1157 }
1158
1159 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1160 {
1161     event.Enable( CanRedo() );
1162 }
1163
1164 // the rest of the file only deals with the rich edit controls
1165 #if wxUSE_RICHEDIT
1166
1167 // ----------------------------------------------------------------------------
1168 // colour setting for the rich edit controls
1169 // ----------------------------------------------------------------------------
1170
1171 // Watcom C++ doesn't define this
1172 #ifndef SCF_ALL
1173 #define SCF_ALL 0x0004
1174 #endif
1175
1176 bool wxTextCtrl::SetBackgroundColour(const wxColour& colour)
1177 {
1178     if ( !wxTextCtrlBase::SetBackgroundColour(colour) )
1179     {
1180         // colour didn't really change
1181         return FALSE;
1182     }
1183
1184     if ( IsRich() )
1185     {
1186         // rich edit doesn't use WM_CTLCOLOR, hence we need to send
1187         // EM_SETBKGNDCOLOR additionally
1188         ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour));
1189     }
1190
1191     return TRUE;
1192 }
1193
1194 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1195 {
1196     if ( !wxTextCtrlBase::SetForegroundColour(colour) )
1197     {
1198         // colour didn't really change
1199         return FALSE;
1200     }
1201
1202     if ( IsRich() )
1203     {
1204         // change the colour of everything
1205         CHARFORMAT cf;
1206         wxZeroMemory(cf);
1207         cf.cbSize = sizeof(cf);
1208         cf.dwMask = CFM_COLOR;
1209         cf.crTextColor = wxColourToRGB(colour);
1210         ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf);
1211     }
1212
1213     return TRUE;
1214 }
1215
1216 // ----------------------------------------------------------------------------
1217 // styling support for rich edit controls
1218 // ----------------------------------------------------------------------------
1219
1220 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
1221 {
1222     if ( !IsRich() )
1223     {
1224         // can't do it with normal text control
1225         return FALSE;
1226     }
1227
1228     // the rich text control doesn't handle setting background colour, so don't
1229     // even try if it's the only thing we want to change
1230     if ( wxRichEditModule::GetLoadedVersion() < 2 &&
1231          !style.HasFont() && !style.HasTextColour() )
1232     {
1233         // nothing to do: return TRUE if there was really nothing to do and
1234         // FALSE if we failed to set bg colour
1235         return !style.HasBackgroundColour();
1236     }
1237
1238     // order the range if needed
1239     if ( start > end )
1240     {
1241         long tmp = start;
1242         start = end;
1243         end = tmp;
1244     }
1245
1246     // we can only change the format of the selection, so select the range we
1247     // want and restore the old selection later
1248     long startOld, endOld;
1249     GetSelection(&startOld, &endOld);
1250
1251     // but do we really have to change the selection?
1252     bool changeSel = start != startOld || end != endOld;
1253
1254     if ( changeSel )
1255         SendMessage(GetHwnd(), EM_SETSEL, (WPARAM) start, (LPARAM) end);
1256
1257     // initialize CHARFORMAT struct
1258 #if wxUSE_RICHEDIT2
1259     CHARFORMAT2 cf;
1260 #else
1261     CHARFORMAT cf;
1262 #endif
1263     wxZeroMemory(cf);
1264     cf.cbSize = sizeof(cf);
1265
1266     if ( style.HasFont() )
1267     {
1268         cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET;
1269
1270         // fill in data from LOGFONT but recalculate lfHeight because we need
1271         // the real height in twips and not the negative number which
1272         // wxFillLogFont() returns (this is correct in general and works with
1273         // the Windows font mapper, but not here)
1274         LOGFONT lf;
1275         wxFillLogFont(&lf, &style.GetFont());
1276         cf.yHeight = 20*style.GetFont().GetPointSize(); // 1 pt = 20 twips
1277         cf.bCharSet = lf.lfCharSet;
1278         cf.bPitchAndFamily = lf.lfPitchAndFamily;
1279         wxStrncpy( cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName) );
1280
1281         // also deal with underline/italic/bold attributes
1282         if ( lf.lfItalic )
1283         {
1284             cf.dwMask |= CFM_ITALIC;
1285             cf.dwEffects |= CFE_ITALIC;
1286         }
1287
1288         if ( lf.lfWeight == FW_BOLD )
1289         {
1290             cf.dwMask |= CFM_BOLD;
1291             cf.dwEffects |= CFE_BOLD;
1292         }
1293
1294         if ( lf.lfUnderline )
1295         {
1296             cf.dwMask |= CFM_UNDERLINE;
1297             cf.dwEffects |= CFE_UNDERLINE;
1298         }
1299
1300         // strikeout fonts are not supported by wxWindows
1301     }
1302
1303     if ( style.HasTextColour() )
1304     {
1305         cf.dwMask |= CFM_COLOR;
1306         cf.crTextColor = wxColourToRGB(style.GetTextColour());
1307     }
1308
1309 #if wxUSE_RICHEDIT2
1310 #ifndef CFM_BACKCOLOR
1311 #define CFM_BACKCOLOR 0x04000000
1312 #endif
1313
1314     if ( wxRichEditModule::GetLoadedVersion() > 1 && style.HasBackgroundColour() )
1315     {
1316         cf.dwMask |= CFM_BACKCOLOR;
1317         cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
1318     }
1319 #endif
1320     // do format the selection
1321     bool ok = ::SendMessage(GetHwnd(), EM_SETCHARFORMAT,
1322                             SCF_SELECTION, (LPARAM)&cf) != 0;
1323     if ( !ok )
1324     {
1325         wxLogDebug(_T("SendMessage(EM_SETCHARFORMAT, SCF_SELECTION) failed"));
1326     }
1327
1328     if ( changeSel )
1329     {
1330         // restore the original selection
1331         SendMessage(GetHwnd(), EM_SETSEL, (WPARAM)startOld, (LPARAM)endOld);
1332     }
1333
1334     return ok;
1335 }
1336
1337 // ----------------------------------------------------------------------------
1338 // wxRichEditModule
1339 // ----------------------------------------------------------------------------
1340
1341 bool wxRichEditModule::OnInit()
1342 {
1343     // don't do anything - we will load it when needed
1344     return TRUE;
1345 }
1346
1347 void wxRichEditModule::OnExit()
1348 {
1349     if ( ms_hRichEdit )
1350     {
1351         FreeLibrary(ms_hRichEdit);
1352     }
1353 }
1354
1355 /* static */
1356 bool wxRichEditModule::Load(int version)
1357 {
1358     wxCHECK_MSG( version >= 1 && version <= 3, FALSE,
1359                  _T("incorrect richedit control version requested") );
1360
1361     if ( version <= ms_verRichEdit )
1362     {
1363         // we've already got this or better
1364         return TRUE;
1365     }
1366
1367     if ( ms_hRichEdit )
1368     {
1369         ::FreeLibrary(ms_hRichEdit);
1370     }
1371
1372     // always try load riched20.dll first - like this we won't have to reload
1373     // it later if we're first asked for RE 1 and then for RE 2 or 3
1374     wxString dllname = _T("riched20.dll");
1375     ms_hRichEdit = ::LoadLibrary(dllname);
1376     ms_verRichEdit = 2; // no way to tell if it's 2 or 3, assume 2
1377
1378     if ( !ms_hRichEdit && (version == 1) )
1379     {
1380         // fall back to RE 1
1381         dllname = _T("riched32.dll");
1382         ms_hRichEdit = ::LoadLibrary(dllname);
1383         ms_verRichEdit = 1;
1384     }
1385
1386     if ( !ms_hRichEdit )
1387     {
1388         wxLogSysError(_("Could not load Rich Edit DLL '%s'"), dllname.c_str());
1389
1390         ms_verRichEdit = -1;
1391
1392         return FALSE;
1393     }
1394
1395     return TRUE;
1396 }
1397
1398 #endif // wxUSE_RICHEDIT
1399