src/msw/textctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        msw/textctrl.cpp
   3 // Purpose:     wxTextCtrl
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 #ifdef __GNUG__
  17     #pragma implementation "textctrl.h"
  18 #endif
  19
  20 // ----------------------------------------------------------------------------
  21 // headers
  22 // ----------------------------------------------------------------------------
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #if wxUSE_TEXTCTRL
  32
  33 #ifndef WX_PRECOMP
  34     #include "wx/textctrl.h"
  35     #include "wx/settings.h"
  36     #include "wx/brush.h"
  37     #include "wx/utils.h"
  38     #include "wx/intl.h"
  39     #include "wx/log.h"
  40     #include "wx/app.h"
  41 #endif
  42
  43 #include "wx/module.h"
  44
  45 #if wxUSE_CLIPBOARD
  46     #include "wx/clipbrd.h"
  47 #endif
  48
  49 #include "wx/textfile.h"
  50
  51 #include <windowsx.h>
  52
  53 #include "wx/msw/private.h"
  54
  55 #include <string.h>
  56 #include <stdlib.h>
  57 #include <sys/types.h>
  58
  59 #if wxUSE_RICHEDIT && (!defined(__GNUWIN32_OLD__) || defined(__CYGWIN10__))
  60     #include <richedit.h>
  61 #endif
  62
  63 // old mingw32 doesn't define this
  64 #ifndef CFM_CHARSET
  65     #define CFM_CHARSET 0x08000000
  66 #endif // CFM_CHARSET
  67
  68 // ----------------------------------------------------------------------------
  69 // private classes
  70 // ----------------------------------------------------------------------------
  71
  72 #if wxUSE_RICHEDIT
  73
  74 // this module initializes RichEdit DLL if needed
  75 class wxRichEditModule : public wxModule
  76 {
  77 public:
  78     virtual bool OnInit();
  79     virtual void OnExit();
  80
  81     // get the version currently loaded, -1 if none
  82     static int GetLoadedVersion() { return ms_verRichEdit; }
  83
  84     // load the richedit DLL of at least of required version
  85     static bool Load(int version = 1);
  86
  87 private:
  88     // the handle to richedit DLL and the version of the DLL loaded
  89     static HINSTANCE ms_hRichEdit;
  90
  91     // the DLL version loaded or -1 if none
  92     static int ms_verRichEdit;
  93
  94     DECLARE_DYNAMIC_CLASS(wxRichEditModule)
  95 };
  96
  97 HINSTANCE wxRichEditModule::ms_hRichEdit = (HINSTANCE)NULL;
  98 int       wxRichEditModule::ms_verRichEdit = -1;
  99
 100 IMPLEMENT_DYNAMIC_CLASS(wxRichEditModule, wxModule)
 101
 102 #endif // wxUSE_RICHEDIT
 103
 104 // ----------------------------------------------------------------------------
 105 // event tables and other macros
 106 // ----------------------------------------------------------------------------
 107
 108 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxControl)
 109
 110 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
 111     EVT_CHAR(wxTextCtrl::OnChar)
 112     EVT_DROP_FILES(wxTextCtrl::OnDropFiles)
 113
 114     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 115     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 116     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 117     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 118     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 119
 120     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 121     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 122     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 123     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 124     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 125 #ifdef __WIN16__
 126     EVT_ERASE_BACKGROUND(wxTextCtrl::OnEraseBackground)
 127 #endif
 128 END_EVENT_TABLE()
 129
 130 // ============================================================================
 131 // implementation
 132 // ============================================================================
 133
 134 // ----------------------------------------------------------------------------
 135 // creation
 136 // ----------------------------------------------------------------------------
 137
 138 wxTextCtrl::wxTextCtrl()
 139 {
 140 #if wxUSE_RICHEDIT
 141     m_isRich = FALSE;
 142 #endif
 143 }
 144
 145 bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id,
 146                         const wxString& value,
 147                         const wxPoint& pos,
 148                         const wxSize& size,
 149                         long style,
 150                         const wxValidator& validator,
 151                         const wxString& name)
 152 {
 153     // base initialization
 154     if ( !CreateBase(parent, id, pos, size, style, validator, name) )
 155         return FALSE;
 156
 157     if ( parent )
 158         parent->AddChild(this);
 159
 160     // translate wxWin style flags to MSW ones, checking for consistency while
 161     // doing it
 162     long msStyle = ES_LEFT | WS_VISIBLE | WS_CHILD | WS_TABSTOP;
 163
 164     if ( m_windowStyle & wxCLIP_SIBLINGS )
 165         msStyle |= WS_CLIPSIBLINGS;
 166
 167     if ( m_windowStyle & wxTE_MULTILINE )
 168     {
 169         wxASSERT_MSG( !(m_windowStyle & wxTE_PROCESS_ENTER),
 170                       wxT("wxTE_PROCESS_ENTER style is ignored for multiline text controls (they always process it)") );
 171
 172         msStyle |= ES_MULTILINE | ES_WANTRETURN;
 173         if ((m_windowStyle & wxTE_NO_VSCROLL) == 0)
 174             msStyle |= WS_VSCROLL;
 175         m_windowStyle |= wxTE_PROCESS_ENTER;
 176     }
 177     else
 178         msStyle |= ES_AUTOHSCROLL;
 179
 180     if (m_windowStyle & wxHSCROLL)
 181         msStyle |= (WS_HSCROLL | ES_AUTOHSCROLL);
 182
 183     if (m_windowStyle & wxTE_READONLY)
 184         msStyle |= ES_READONLY;
 185
 186     if (m_windowStyle & wxTE_PASSWORD) // hidden input
 187         msStyle |= ES_PASSWORD;
 188
 189    if (m_windowStyle & wxTE_AUTO_SCROLL)
 190         msStyle |=  ES_AUTOHSCROLL;
 191
 192
 193     // we always want the characters and the arrows
 194     m_lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
 195
 196     // we may have several different cases:
 197     // 1. normal case: both TAB and ENTER are used for dialog navigation
 198     // 2. ctrl which wants TAB for itself: ENTER is used to pass to the next
 199     //    control in the dialog
 200     // 3. ctrl which wants ENTER for itself: TAB is used for dialog navigation
 201     // 4. ctrl which wants both TAB and ENTER: Ctrl-ENTER is used to pass to
 202     //    the next control
 203     if ( m_windowStyle & wxTE_PROCESS_ENTER )
 204         m_lDlgCode |= DLGC_WANTMESSAGE;
 205     if ( m_windowStyle & wxTE_PROCESS_TAB )
 206         m_lDlgCode |= DLGC_WANTTAB;
 207
 208     // do create the control - either an EDIT or RICHEDIT
 209     wxString windowClass = wxT("EDIT");
 210
 211 #if wxUSE_RICHEDIT
 212     if ( m_windowStyle & wxTE_RICH )
 213     {
 214         static bool s_errorGiven = FALSE;   // MT-FIXME
 215
 216         // only give the error msg once if the DLL can't be loaded
 217         if ( !s_errorGiven )
 218         {
 219             // first try to load the RichEdit DLL (will do nothing if already
 220             // done)
 221             if ( !wxRichEditModule::Load() )
 222             {
 223                 wxLogError(_("Impossible to create a rich edit control, using simple text control instead. Please reinstall riched32.dll"));
 224
 225                 s_errorGiven = TRUE;
 226             }
 227         }
 228
 229         if ( s_errorGiven )
 230         {
 231             m_isRich = FALSE;
 232         }
 233         else
 234         {
 235             msStyle |= ES_AUTOVSCROLL;
 236             m_isRich = TRUE;
 237
 238             int ver = wxRichEditModule::GetLoadedVersion();
 239             if ( ver == 1 )
 240             {
 241                 windowClass = wxT("RICHEDIT");
 242             }
 243             else
 244             {
 245 #ifndef RICHEDIT_CLASS
 246                 wxString RICHEDIT_CLASS;
 247                 RICHEDIT_CLASS.Printf(_T("RichEdit%d0"), ver);
 248 #if wxUSE_UNICODE
 249                 RICHEDIT_CLASS += _T('W');
 250 #else // ANSI
 251                 RICHEDIT_CLASS += _T('A');
 252 #endif // Unicode/ANSI
 253 #endif // !RICHEDIT_CLASS
 254
 255                 windowClass = RICHEDIT_CLASS;
 256             }
 257         }
 258     }
 259     else
 260         m_isRich = FALSE;
 261 #endif // wxUSE_RICHEDIT
 262
 263     bool want3D;
 264     WXDWORD exStyle = Determine3DEffects(WS_EX_CLIENTEDGE, &want3D);
 265
 266     // Even with extended styles, need to combine with WS_BORDER for them to
 267     // look right.
 268     if ( want3D || wxStyleHasBorder(m_windowStyle) )
 269         msStyle |= WS_BORDER;
 270
 271     // NB: don't use pos and size as CreateWindowEx arguments because they
 272     //     might be -1 in which case we should use the default values (and
 273     //     SetSize called below takes care of it)
 274     m_hWnd = (WXHWND)::CreateWindowEx(exStyle,
 275                                       windowClass.c_str(),
 276                                       NULL,
 277                                       msStyle,
 278                                       0, 0, 0, 0,
 279                                       GetHwndOf(parent),
 280                                       (HMENU)m_windowId,
 281                                       wxGetInstance(),
 282                                       NULL);
 283
 284     wxCHECK_MSG( m_hWnd, FALSE, wxT("Failed to create text ctrl") );
 285
 286 #if wxUSE_CTL3D
 287     if ( want3D )
 288     {
 289         Ctl3dSubclassCtl(GetHwnd());
 290         m_useCtl3D = TRUE;
 291     }
 292 #endif
 293
 294 #if wxUSE_RICHEDIT
 295     if (m_isRich)
 296     {
 297         // Have to enable events
 298         ::SendMessage(GetHwnd(), EM_SETEVENTMASK, 0,
 299                       ENM_CHANGE | ENM_DROPFILES | ENM_SELCHANGE | ENM_UPDATE);
 300     }
 301 #endif
 302
 303     SubclassWin(GetHWND());
 304
 305     // set font, position, size and initial value
 306     wxFont& fontParent = parent->GetFont();
 307     if ( fontParent.Ok() )
 308     {
 309         SetFont(fontParent);
 310     }
 311     else
 312     {
 313         SetFont(wxSystemSettings::GetSystemFont(wxSYS_SYSTEM_FONT));
 314     }
 315
 316     // Causes a crash for Symantec C++ and WIN32 for some reason
 317 #if !(defined(__SC__) && defined(__WIN32__))
 318     if ( !value.IsEmpty() )
 319     {
 320         SetValue(value);
 321     }
 322 #endif
 323
 324     // set colours
 325     SetupColours();
 326
 327     SetSize(pos.x, pos.y, size.x, size.y);
 328
 329     return TRUE;
 330 }
 331
 332 // Make sure the window style (etc.) reflects the HWND style (roughly)
 333 void wxTextCtrl::AdoptAttributesFromHWND()
 334 {
 335   wxWindow::AdoptAttributesFromHWND();
 336
 337   HWND hWnd = GetHwnd();
 338   long style = GetWindowLong(hWnd, GWL_STYLE);
 339
 340   // retrieve the style to see whether this is an edit or richedit ctrl
 341 #if wxUSE_RICHEDIT
 342   wxChar buf[256];
 343
 344   GetClassName(hWnd, buf, WXSIZEOF(buf));
 345
 346   if ( wxStricmp(buf, wxT("EDIT")) == 0 )
 347     m_isRich = FALSE;
 348   else
 349     m_isRich = TRUE;
 350 #endif // wxUSE_RICHEDIT
 351
 352   if (style & ES_MULTILINE)
 353     m_windowStyle |= wxTE_MULTILINE;
 354   if (style & ES_PASSWORD)
 355     m_windowStyle |= wxTE_PASSWORD;
 356   if (style & ES_READONLY)
 357     m_windowStyle |= wxTE_READONLY;
 358   if (style & ES_WANTRETURN)
 359     m_windowStyle |= wxTE_PROCESS_ENTER;
 360 }
 361
 362 void wxTextCtrl::SetupColours()
 363 {
 364     wxColour bkgndColour;
 365 //    if (IsEditable() || (m_windowStyle & wxTE_MULTILINE))
 366         bkgndColour = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOW);
 367 //    else
 368 //        bkgndColour = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE);
 369
 370     SetBackgroundColour(bkgndColour);
 371     SetForegroundColour(GetParent()->GetForegroundColour());
 372 }
 373
 374 // ----------------------------------------------------------------------------
 375 // set/get the controls text
 376 // ----------------------------------------------------------------------------
 377
 378 wxString wxTextCtrl::GetValue() const
 379 {
 380     // we can't use wxGetWindowText() (i.e. WM_GETTEXT internally) for
 381     // retrieving more than 64Kb under Win9x
 382 #if wxUSE_RICHEDIT
 383     if ( m_isRich )
 384     {
 385         wxString str;
 386
 387         int len = GetWindowTextLength(GetHwnd());
 388         if ( len )
 389         {
 390             // alloc one extra WORD as needed by the control
 391             wxChar *p = str.GetWriteBuf(++len);
 392
 393             TEXTRANGE textRange;
 394             textRange.chrg.cpMin = 0;
 395             textRange.chrg.cpMax = -1;
 396             textRange.lpstrText = p;
 397
 398             (void)SendMessage(GetHwnd(), EM_GETTEXTRANGE, 0, (LPARAM)&textRange);
 399
 400             // believe it or not, but EM_GETTEXTRANGE uses just CR ('\r') for
 401             // the newlines which is neither Unix nor Windows style (Win95 with
 402             // riched20.dll shows this behaviour) - convert it to something
 403             // reasonable
 404             for ( ; *p; p++ )
 405             {
 406                 if ( *p == _T('\r') )
 407                     *p = _T('\n');
 408             }
 409
 410             str.UngetWriteBuf();
 411         }
 412         //else: no text at all, leave the string empty
 413
 414         return str;
 415     }
 416 #endif // wxUSE_RICHEDIT
 417
 418     // WM_GETTEXT uses standard DOS CR+LF (\r\n) convention - convert to the
 419     // same one as above for consitency
 420     wxString str = wxGetWindowText(GetHWND());
 421
 422     return wxTextFile::Translate(str, wxTextFileType_Unix);
 423 }
 424
 425 void wxTextCtrl::SetValue(const wxString& value)
 426 {
 427     // if the text is long enough, it's faster to just set it instead of first
 428     // comparing it with the old one (chances are that it will be different
 429     // anyhow, this comparison is there to avoid flicker for small single-line
 430     // edit controls mostly)
 431     if ( (value.length() > 0x400) || (value != GetValue()) )
 432     {
 433         wxString valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
 434
 435         SetWindowText(GetHwnd(), valueDos.c_str());
 436
 437         // for compatibility with the GTK and because it is more logical, we
 438         // move the cursor to the end of the text after SetValue()
 439
 440         // GRG, Jun/2000: Changed this back after a lot of discussion
 441         //   in the lists. wxWindows 2.2 will have a set of flags to
 442         //   customize this behaviour.
 443         //SetInsertionPointEnd();
 444
 445         AdjustSpaceLimit();
 446     }
 447 }
 448
 449 void wxTextCtrl::WriteText(const wxString& value)
 450 {
 451     wxString valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
 452
 453 #if wxUSE_RICHEDIT
 454     // ensure that the new text will be in the default style
 455     if ( IsRich() &&
 456             (m_defaultStyle.HasFont() || m_defaultStyle.HasTextColour()) )
 457     {
 458         long start, end;
 459         GetSelection(&start, &end);
 460         SetStyle(start, end, m_defaultStyle );
 461     }
 462 #endif // wxUSE_RICHEDIT
 463
 464     SendMessage(GetHwnd(), EM_REPLACESEL, 0, (LPARAM)valueDos.c_str());
 465
 466     AdjustSpaceLimit();
 467 }
 468
 469 void wxTextCtrl::AppendText(const wxString& text)
 470 {
 471     SetInsertionPointEnd();
 472     WriteText(text);
 473 }
 474
 475 void wxTextCtrl::Clear()
 476 {
 477     SetWindowText(GetHwnd(), wxT(""));
 478 }
 479
 480 // ----------------------------------------------------------------------------
 481 // Clipboard operations
 482 // ----------------------------------------------------------------------------
 483
 484 void wxTextCtrl::Copy()
 485 {
 486     if (CanCopy())
 487     {
 488         HWND hWnd = GetHwnd();
 489         SendMessage(hWnd, WM_COPY, 0, 0L);
 490     }
 491 }
 492
 493 void wxTextCtrl::Cut()
 494 {
 495     if (CanCut())
 496     {
 497         HWND hWnd = GetHwnd();
 498         SendMessage(hWnd, WM_CUT, 0, 0L);
 499     }
 500 }
 501
 502 void wxTextCtrl::Paste()
 503 {
 504     if (CanPaste())
 505     {
 506         HWND hWnd = GetHwnd();
 507         SendMessage(hWnd, WM_PASTE, 0, 0L);
 508     }
 509 }
 510
 511 bool wxTextCtrl::CanCopy() const
 512 {
 513     // Can copy if there's a selection
 514     long from, to;
 515     GetSelection(& from, & to);
 516     return (from != to) ;
 517 }
 518
 519 bool wxTextCtrl::CanCut() const
 520 {
 521     // Can cut if there's a selection
 522     long from, to;
 523     GetSelection(& from, & to);
 524     return (from != to) && (IsEditable());
 525 }
 526
 527 bool wxTextCtrl::CanPaste() const
 528 {
 529 #if wxUSE_RICHEDIT
 530     if (m_isRich)
 531     {
 532         int dataFormat = 0; // 0 == any format
 533         return (::SendMessage( GetHwnd(), EM_CANPASTE, (WPARAM) (UINT) dataFormat, 0) != 0);
 534     }
 535 #endif
 536     if (!IsEditable())
 537         return FALSE;
 538
 539     // Standard edit control: check for straight text on clipboard
 540     bool isTextAvailable = FALSE;
 541     if ( ::OpenClipboard(GetHwndOf(wxTheApp->GetTopWindow())) )
 542     {
 543         isTextAvailable = (::IsClipboardFormatAvailable(CF_TEXT) != 0);
 544         ::CloseClipboard();
 545     }
 546
 547     return isTextAvailable;
 548 }
 549
 550 // ----------------------------------------------------------------------------
 551 // Accessors
 552 // ----------------------------------------------------------------------------
 553
 554 void wxTextCtrl::SetEditable(bool editable)
 555 {
 556     HWND hWnd = GetHwnd();
 557     SendMessage(hWnd, EM_SETREADONLY, (WPARAM)!editable, (LPARAM)0L);
 558 }
 559
 560 void wxTextCtrl::SetInsertionPoint(long pos)
 561 {
 562     HWND hWnd = GetHwnd();
 563 #ifdef __WIN32__
 564 #if wxUSE_RICHEDIT
 565     if ( m_isRich)
 566     {
 567         CHARRANGE range;
 568         range.cpMin = pos;
 569         range.cpMax = pos;
 570         SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM) &range);
 571         SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
 572     }
 573     else
 574 #endif // wxUSE_RICHEDIT
 575     {
 576         SendMessage(hWnd, EM_SETSEL, pos, pos);
 577         SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
 578     }
 579 #else // Win16
 580     SendMessage(hWnd, EM_SETSEL, 0, MAKELPARAM(pos, pos));
 581 #endif // Win32/16
 582
 583     static const wxChar *nothing = _T("");
 584     SendMessage(hWnd, EM_REPLACESEL, 0, (LPARAM)nothing);
 585 }
 586
 587 void wxTextCtrl::SetInsertionPointEnd()
 588 {
 589     long pos = GetLastPosition();
 590     SetInsertionPoint(pos);
 591 }
 592
 593 long wxTextCtrl::GetInsertionPoint() const
 594 {
 595 #if wxUSE_RICHEDIT
 596     if (m_isRich)
 597     {
 598         CHARRANGE range;
 599         range.cpMin = 0;
 600         range.cpMax = 0;
 601         SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
 602         return range.cpMin;
 603     }
 604 #endif
 605
 606     DWORD Pos = (DWORD)SendMessage(GetHwnd(), EM_GETSEL, 0, 0L);
 607     return Pos & 0xFFFF;
 608 }
 609
 610 long wxTextCtrl::GetLastPosition() const
 611 {
 612     HWND hWnd = GetHwnd();
 613
 614     // Will always return a number > 0 (according to docs)
 615     int noLines = (int)SendMessage(hWnd, EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0L);
 616
 617     // This gets the char index for the _beginning_ of the last line
 618     int charIndex = (int)SendMessage(hWnd, EM_LINEINDEX, (WPARAM)(noLines-1), (LPARAM)0L);
 619
 620     // Get number of characters in the last line. We'll add this to the character
 621     // index for the last line, 1st position.
 622     int lineLength = (int)SendMessage(hWnd, EM_LINELENGTH, (WPARAM)charIndex, (LPARAM)0L);
 623
 624     return (long)(charIndex + lineLength);
 625 }
 626
 627 // If the return values from and to are the same, there is no
 628 // selection.
 629 void wxTextCtrl::GetSelection(long* from, long* to) const
 630 {
 631 #if wxUSE_RICHEDIT
 632     if (m_isRich)
 633     {
 634         CHARRANGE charRange;
 635         ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) (CHARRANGE*) & charRange);
 636
 637         *from = charRange.cpMin;
 638         *to = charRange.cpMax;
 639     }
 640     else
 641 #endif // rich/!rich
 642     {
 643         DWORD dwStart, dwEnd;
 644         WPARAM wParam = (WPARAM) &dwStart; // receives starting position
 645         LPARAM lParam = (LPARAM) &dwEnd;   // receives ending position
 646
 647         ::SendMessage(GetHwnd(), EM_GETSEL, wParam, lParam);
 648
 649         *from = dwStart;
 650         *to = dwEnd;
 651     }
 652 }
 653
 654 bool wxTextCtrl::IsEditable() const
 655 {
 656     long style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
 657
 658     return ((style & ES_READONLY) == 0);
 659 }
 660
 661 // ----------------------------------------------------------------------------
 662 // Editing
 663 // ----------------------------------------------------------------------------
 664
 665 void wxTextCtrl::Replace(long from, long to, const wxString& value)
 666 {
 667 #if wxUSE_CLIPBOARD
 668     HWND hWnd = GetHwnd();
 669     long fromChar = from;
 670     long toChar = to;
 671
 672     // Set selection and remove it
 673 #ifdef __WIN32__
 674     SendMessage(hWnd, EM_SETSEL, fromChar, toChar);
 675 #else
 676     SendMessage(hWnd, EM_SETSEL, (WPARAM)0, (LPARAM)MAKELONG(fromChar, toChar));
 677 #endif
 678     SendMessage(hWnd, WM_CUT, (WPARAM)0, (LPARAM)0);
 679
 680     // Now replace with 'value', by pasting.
 681     wxSetClipboardData(wxDF_TEXT, (wxObject *) (const wxChar *)value, 0, 0);
 682
 683     // Paste into edit control
 684     SendMessage(hWnd, WM_PASTE, (WPARAM)0, (LPARAM)0L);
 685 #else
 686     wxFAIL_MSG("wxTextCtrl::Replace not implemented if wxUSE_CLIPBOARD is 0.");
 687 #endif
 688 }
 689
 690 void wxTextCtrl::Remove(long from, long to)
 691 {
 692     HWND hWnd = GetHwnd();
 693     long fromChar = from;
 694     long toChar = to;
 695
 696     // Cut all selected text
 697 #ifdef __WIN32__
 698     SendMessage(hWnd, EM_SETSEL, fromChar, toChar);
 699 #else
 700     SendMessage(hWnd, EM_SETSEL, (WPARAM)0, (LPARAM)MAKELONG(fromChar, toChar));
 701 #endif
 702     SendMessage(hWnd, WM_CUT, (WPARAM)0, (LPARAM)0);
 703 }
 704
 705 void wxTextCtrl::SetSelection(long from, long to)
 706 {
 707     HWND hWnd = GetHwnd();
 708     long fromChar = from;
 709     long toChar = to;
 710
 711     // if from and to are both -1, it means (in wxWindows) that all text should
 712     // be selected. Translate into Windows convention
 713     if ((from == -1) && (to == -1))
 714     {
 715       fromChar = 0;
 716       toChar = -1;
 717     }
 718
 719 #ifdef __WIN32__
 720     SendMessage(hWnd, EM_SETSEL, (WPARAM)fromChar, (LPARAM)toChar);
 721     SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
 722 #else
 723     // WPARAM is 0: selection is scrolled into view
 724     SendMessage(hWnd, EM_SETSEL, (WPARAM)0, (LPARAM)MAKELONG(fromChar, toChar));
 725 #endif
 726 }
 727
 728 bool wxTextCtrl::LoadFile(const wxString& file)
 729 {
 730     if ( wxTextCtrlBase::LoadFile(file) )
 731     {
 732         // update the size limit if needed
 733         AdjustSpaceLimit();
 734
 735         return TRUE;
 736     }
 737
 738     return FALSE;
 739 }
 740
 741 bool wxTextCtrl::IsModified() const
 742 {
 743     return (SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0);
 744 }
 745
 746 // Makes 'unmodified'
 747 void wxTextCtrl::DiscardEdits()
 748 {
 749     SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0L);
 750 }
 751
 752 int wxTextCtrl::GetNumberOfLines() const
 753 {
 754     return (int)SendMessage(GetHwnd(), EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0);
 755 }
 756
 757 long wxTextCtrl::XYToPosition(long x, long y) const
 758 {
 759     HWND hWnd = GetHwnd();
 760
 761     // This gets the char index for the _beginning_ of this line
 762     int charIndex = (int)SendMessage(hWnd, EM_LINEINDEX, (WPARAM)y, (LPARAM)0);
 763     return (long)(x + charIndex);
 764 }
 765
 766 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
 767 {
 768     HWND hWnd = GetHwnd();
 769
 770     // This gets the line number containing the character
 771     int lineNo;
 772 #if wxUSE_RICHEDIT
 773     if ( m_isRich )
 774     {
 775         lineNo = (int)SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, (LPARAM)pos);
 776     }
 777     else
 778 #endif // wxUSE_RICHEDIT
 779         lineNo = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, 0);
 780
 781     if ( lineNo == -1 )
 782     {
 783         // no such line
 784         return FALSE;
 785     }
 786
 787     // This gets the char index for the _beginning_ of this line
 788     int charIndex = (int)SendMessage(hWnd, EM_LINEINDEX, (WPARAM)lineNo, (LPARAM)0);
 789     if ( charIndex == -1 )
 790     {
 791         return FALSE;
 792     }
 793
 794     // The X position must therefore be the different between pos and charIndex
 795     if ( x )
 796         *x = (long)(pos - charIndex);
 797     if ( y )
 798         *y = (long)lineNo;
 799
 800     return TRUE;
 801 }
 802
 803 void wxTextCtrl::ShowPosition(long pos)
 804 {
 805     HWND hWnd = GetHwnd();
 806
 807     // To scroll to a position, we pass the number of lines and characters
 808     // to scroll *by*. This means that we need to:
 809     // (1) Find the line position of the current line.
 810     // (2) Find the line position of pos.
 811     // (3) Scroll by (pos - current).
 812     // For now, ignore the horizontal scrolling.
 813
 814     // Is this where scrolling is relative to - the line containing the caret?
 815     // Or is the first visible line??? Try first visible line.
 816 //    int currentLineLineNo1 = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)-1, (LPARAM)0L);
 817
 818     int currentLineLineNo = (int)SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, (WPARAM)0, (LPARAM)0L);
 819
 820     int specifiedLineLineNo = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, (LPARAM)0L);
 821
 822     int linesToScroll = specifiedLineLineNo - currentLineLineNo;
 823
 824     if (linesToScroll != 0)
 825       (void)SendMessage(hWnd, EM_LINESCROLL, (WPARAM)0, (LPARAM)linesToScroll);
 826 }
 827
 828 int wxTextCtrl::GetLineLength(long lineNo) const
 829 {
 830     long charIndex = XYToPosition(0, lineNo);
 831     int len = (int)SendMessage(GetHwnd(), EM_LINELENGTH, charIndex, 0);
 832     return len;
 833 }
 834
 835 wxString wxTextCtrl::GetLineText(long lineNo) const
 836 {
 837     size_t len = (size_t)GetLineLength(lineNo) + 1;
 838
 839     // there must be at least enough place for the length WORD in the
 840     // buffer
 841     len += sizeof(WORD);
 842
 843     wxString str;
 844     wxChar *buf = str.GetWriteBuf(len);
 845
 846     *(WORD *)buf = (WORD)len;
 847     len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf);
 848     buf[len] = 0;
 849
 850     str.UngetWriteBuf(len);
 851
 852     return str;
 853 }
 854
 855 // ----------------------------------------------------------------------------
 856 // Undo/redo
 857 // ----------------------------------------------------------------------------
 858
 859 void wxTextCtrl::Undo()
 860 {
 861     if (CanUndo())
 862     {
 863         ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
 864     }
 865 }
 866
 867 void wxTextCtrl::Redo()
 868 {
 869     if (CanRedo())
 870     {
 871         // Same as Undo, since Undo undoes the undo, i.e. a redo.
 872         ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
 873     }
 874 }
 875
 876 bool wxTextCtrl::CanUndo() const
 877 {
 878     return (::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0);
 879 }
 880
 881 bool wxTextCtrl::CanRedo() const
 882 {
 883     return (::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0);
 884 }
 885
 886 // ----------------------------------------------------------------------------
 887 // implemenation details
 888 // ----------------------------------------------------------------------------
 889
 890 void wxTextCtrl::Command(wxCommandEvent & event)
 891 {
 892     SetValue(event.GetString());
 893     ProcessCommand (event);
 894 }
 895
 896 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
 897 {
 898     // By default, load the first file into the text window.
 899     if (event.GetNumberOfFiles() > 0)
 900     {
 901         LoadFile(event.GetFiles()[0]);
 902     }
 903 }
 904
 905 void wxTextCtrl::OnChar(wxKeyEvent& event)
 906 {
 907     switch ( event.KeyCode() )
 908     {
 909         case WXK_RETURN:
 910             if ( !(m_windowStyle & wxTE_MULTILINE) )
 911             {
 912                 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
 913                 InitCommandEvent(event);
 914                 event.SetString(GetValue());
 915                 if ( GetEventHandler()->ProcessEvent(event) )
 916                     return;
 917             }
 918             //else: multiline controls need Enter for themselves
 919
 920             break;
 921
 922         case WXK_TAB:
 923             // always produce navigation event - even if we process TAB
 924             // ourselves the fact that we got here means that the user code
 925             // decided to skip processing of this TAB - probably to let it
 926             // do its default job.
 927             {
 928                 wxNavigationKeyEvent eventNav;
 929                 eventNav.SetDirection(!event.ShiftDown());
 930                 eventNav.SetWindowChange(event.ControlDown());
 931                 eventNav.SetEventObject(this);
 932
 933                 if ( GetParent()->GetEventHandler()->ProcessEvent(eventNav) )
 934                     return;
 935             }
 936             break;
 937     }
 938
 939     // no, we didn't process it
 940     event.Skip();
 941 }
 942
 943 bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
 944 {
 945     switch (param)
 946     {
 947         case EN_SETFOCUS:
 948         case EN_KILLFOCUS:
 949             {
 950                 wxFocusEvent event(param == EN_KILLFOCUS ? wxEVT_KILL_FOCUS
 951                         : wxEVT_SET_FOCUS,
 952                         m_windowId);
 953                 event.SetEventObject( this );
 954                 GetEventHandler()->ProcessEvent(event);
 955             }
 956             break;
 957
 958         case EN_CHANGE:
 959             {
 960                 wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, m_windowId);
 961                 InitCommandEvent(event);
 962                 event.SetString(GetValue());
 963                 ProcessCommand(event);
 964             }
 965             break;
 966
 967         case EN_MAXTEXT:
 968             // the text size limit has been hit - increase it
 969             AdjustSpaceLimit();
 970             break;
 971
 972             // the other notification messages are not processed
 973         case EN_UPDATE:
 974         case EN_ERRSPACE:
 975         case EN_HSCROLL:
 976         case EN_VSCROLL:
 977             return FALSE;
 978         default:
 979             return FALSE;
 980     }
 981
 982     // processed
 983     return TRUE;
 984 }
 985
 986 WXHBRUSH wxTextCtrl::OnCtlColor(WXHDC pDC, WXHWND WXUNUSED(pWnd), WXUINT WXUNUSED(nCtlColor),
 987 #if wxUSE_CTL3D
 988                                WXUINT message,
 989                                WXWPARAM wParam,
 990                                WXLPARAM lParam
 991 #else
 992                                WXUINT WXUNUSED(message),
 993                                WXWPARAM WXUNUSED(wParam),
 994                                WXLPARAM WXUNUSED(lParam)
 995 #endif
 996     )
 997 {
 998 #if wxUSE_CTL3D
 999     if ( m_useCtl3D )
1000     {
1001         HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
1002         return (WXHBRUSH) hbrush;
1003     }
1004 #endif // wxUSE_CTL3D
1005
1006     HDC hdc = (HDC)pDC;
1007     if (GetParent()->GetTransparentBackground())
1008         SetBkMode(hdc, TRANSPARENT);
1009     else
1010         SetBkMode(hdc, OPAQUE);
1011
1012     wxColour colBack = GetBackgroundColour();
1013
1014     if (!IsEnabled() && (GetWindowStyle() & wxTE_MULTILINE) == 0)
1015         colBack = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE);
1016
1017     ::SetBkColor(hdc, wxColourToRGB(colBack));
1018     ::SetTextColor(hdc, wxColourToRGB(GetForegroundColour()));
1019
1020     wxBrush *brush = wxTheBrushList->FindOrCreateBrush(colBack, wxSOLID);
1021
1022     return (WXHBRUSH)brush->GetResourceHandle();
1023 }
1024
1025 // In WIN16, need to override normal erasing because
1026 // Ctl3D doesn't use the wxWindows background colour.
1027 #ifdef __WIN16__
1028 void wxTextCtrl::OnEraseBackground(wxEraseEvent& event)
1029 {
1030     wxColour col(m_backgroundColour);
1031
1032 #if wxUSE_CTL3D
1033     if (m_useCtl3D)
1034         col = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOW);
1035 #endif
1036
1037     RECT rect;
1038     ::GetClientRect(GetHwnd(), &rect);
1039
1040     COLORREF ref = PALETTERGB(col.Red(),
1041                               col.Green(),
1042                               col.Blue());
1043     HBRUSH hBrush = ::CreateSolidBrush(ref);
1044     if ( !hBrush )
1045         wxLogLastError(wxT("CreateSolidBrush"));
1046
1047     HDC hdc = (HDC)event.GetDC()->GetHDC();
1048
1049     int mode = ::SetMapMode(hdc, MM_TEXT);
1050
1051     ::FillRect(hdc, &rect, hBrush);
1052     ::DeleteObject(hBrush);
1053     ::SetMapMode(hdc, mode);
1054
1055 }
1056 #endif
1057
1058 void wxTextCtrl::AdjustSpaceLimit()
1059 {
1060 #ifndef __WIN16__
1061     unsigned int len = ::GetWindowTextLength(GetHwnd()),
1062     limit = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
1063     if ( len >= limit )
1064     {
1065         limit = len + 0x8000;    // 32Kb
1066
1067 #if wxUSE_RICHEDIT
1068         if ( m_isRich )
1069         {
1070             // as a nice side effect, this also allows passing limit > 64Kb
1071             ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, limit);
1072         }
1073         else
1074 #endif // wxUSE_RICHEDIT
1075         {
1076             if ( limit > 0xffff )
1077             {
1078                 // this will set it to a platform-dependent maximum (much more
1079                 // than 64Kb under NT)
1080                 limit = 0;
1081             }
1082
1083             ::SendMessage(GetHwnd(), EM_LIMITTEXT, limit, 0);
1084         }
1085     }
1086 #endif // !Win16
1087 }
1088
1089 bool wxTextCtrl::AcceptsFocus() const
1090 {
1091     // we don't want focus if we can't be edited
1092     return IsEditable() && wxControl::AcceptsFocus();
1093 }
1094
1095 wxSize wxTextCtrl::DoGetBestSize() const
1096 {
1097     int cx, cy;
1098     wxGetCharSize(GetHWND(), &cx, &cy, &GetFont());
1099
1100     int wText = DEFAULT_ITEM_WIDTH;
1101
1102     int hText = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy);
1103     if ( m_windowStyle & wxTE_MULTILINE )
1104     {
1105         hText *= wxMax(GetNumberOfLines(), 5);
1106     }
1107     //else: for single line control everything is ok
1108
1109     return wxSize(wText, hText);
1110 }
1111
1112 // ----------------------------------------------------------------------------
1113 // standard handlers for standard edit menu events
1114 // ----------------------------------------------------------------------------
1115
1116 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1117 {
1118     Cut();
1119 }
1120
1121 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1122 {
1123     Copy();
1124 }
1125
1126 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1127 {
1128     Paste();
1129 }
1130
1131 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1132 {
1133     Undo();
1134 }
1135
1136 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1137 {
1138     Redo();
1139 }
1140
1141 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1142 {
1143     event.Enable( CanCut() );
1144 }
1145
1146 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1147 {
1148     event.Enable( CanCopy() );
1149 }
1150
1151 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1152 {
1153     event.Enable( CanPaste() );
1154 }
1155
1156 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1157 {
1158     event.Enable( CanUndo() );
1159 }
1160
1161 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1162 {
1163     event.Enable( CanRedo() );
1164 }
1165
1166 // the rest of the file only deals with the rich edit controls
1167 #if wxUSE_RICHEDIT
1168
1169 // ----------------------------------------------------------------------------
1170 // colour setting for the rich edit controls
1171 // ----------------------------------------------------------------------------
1172
1173 // Watcom C++ doesn't define this
1174 #ifndef SCF_ALL
1175 #define SCF_ALL 0x0004
1176 #endif
1177
1178 bool wxTextCtrl::SetBackgroundColour(const wxColour& colour)
1179 {
1180     if ( !wxTextCtrlBase::SetBackgroundColour(colour) )
1181     {
1182         // colour didn't really change
1183         return FALSE;
1184     }
1185
1186     if ( IsRich() )
1187     {
1188         // rich edit doesn't use WM_CTLCOLOR, hence we need to send
1189         // EM_SETBKGNDCOLOR additionally
1190         ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour));
1191     }
1192
1193     return TRUE;
1194 }
1195
1196 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1197 {
1198     if ( !wxTextCtrlBase::SetForegroundColour(colour) )
1199     {
1200         // colour didn't really change
1201         return FALSE;
1202     }
1203
1204     if ( IsRich() )
1205     {
1206         // change the colour of everything
1207         CHARFORMAT cf;
1208         wxZeroMemory(cf);
1209         cf.cbSize = sizeof(cf);
1210         cf.dwMask = CFM_COLOR;
1211         cf.crTextColor = wxColourToRGB(colour);
1212         ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf);
1213     }
1214
1215     return TRUE;
1216 }
1217
1218 // ----------------------------------------------------------------------------
1219 // styling support for rich edit controls
1220 // ----------------------------------------------------------------------------
1221
1222 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
1223 {
1224     if ( !IsRich() )
1225     {
1226         // can't do it with normal text control
1227         return FALSE;
1228     }
1229
1230     // the rich text control doesn't handle setting background colour, so don't
1231     // even try if it's the only thing we want to change
1232     if ( wxRichEditModule::GetLoadedVersion() < 2 &&
1233          !style.HasFont() && !style.HasTextColour() )
1234     {
1235         // nothing to do: return TRUE if there was really nothing to do and
1236         // FALSE if we failed to set bg colour
1237         return !style.HasBackgroundColour();
1238     }
1239
1240     // order the range if needed
1241     if ( start > end )
1242     {
1243         long tmp = start;
1244         start = end;
1245         end = tmp;
1246     }
1247
1248     // we can only change the format of the selection, so select the range we
1249     // want and restore the old selection later
1250     long startOld, endOld;
1251     GetSelection(&startOld, &endOld);
1252
1253     // but do we really have to change the selection?
1254     bool changeSel = start != startOld || end != endOld;
1255
1256     if ( changeSel )
1257         SendMessage(GetHwnd(), EM_SETSEL, (WPARAM) start, (LPARAM) end);
1258
1259     // initialize CHARFORMAT struct
1260 #if wxUSE_RICHEDIT2
1261     CHARFORMAT2 cf;
1262 #else
1263     CHARFORMAT cf;
1264 #endif
1265     wxZeroMemory(cf);
1266     cf.cbSize = sizeof(cf);
1267
1268     if ( style.HasFont() )
1269     {
1270         cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET;
1271
1272         // fill in data from LOGFONT but recalculate lfHeight because we need
1273         // the real height in twips and not the negative number which
1274         // wxFillLogFont() returns (this is correct in general and works with
1275         // the Windows font mapper, but not here)
1276         LOGFONT lf;
1277         wxFillLogFont(&lf, &style.GetFont());
1278         cf.yHeight = 20*style.GetFont().GetPointSize(); // 1 pt = 20 twips
1279         cf.bCharSet = lf.lfCharSet;
1280         cf.bPitchAndFamily = lf.lfPitchAndFamily;
1281         wxStrncpy( cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName) );
1282
1283         // also deal with underline/italic/bold attributes
1284         if ( lf.lfItalic )
1285         {
1286             cf.dwMask |= CFM_ITALIC;
1287             cf.dwEffects |= CFE_ITALIC;
1288         }
1289
1290         if ( lf.lfWeight == FW_BOLD )
1291         {
1292             cf.dwMask |= CFM_BOLD;
1293             cf.dwEffects |= CFE_BOLD;
1294         }
1295
1296         if ( lf.lfUnderline )
1297         {
1298             cf.dwMask |= CFM_UNDERLINE;
1299             cf.dwEffects |= CFE_UNDERLINE;
1300         }
1301
1302         // strikeout fonts are not supported by wxWindows
1303     }
1304
1305     if ( style.HasTextColour() )
1306     {
1307         cf.dwMask |= CFM_COLOR;
1308         cf.crTextColor = wxColourToRGB(style.GetTextColour());
1309     }
1310
1311 #if wxUSE_RICHEDIT2
1312 #ifndef CFM_BACKCOLOR
1313 #define CFM_BACKCOLOR 0x04000000
1314 #endif
1315
1316     if ( wxRichEditModule::GetLoadedVersion() > 1 && style.HasBackgroundColour() )
1317     {
1318         cf.dwMask |= CFM_BACKCOLOR;
1319         cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
1320     }
1321 #endif
1322     // do format the selection
1323     bool ok = ::SendMessage(GetHwnd(), EM_SETCHARFORMAT,
1324                             SCF_SELECTION, (LPARAM)&cf) != 0;
1325     if ( !ok )
1326     {
1327         wxLogDebug(_T("SendMessage(EM_SETCHARFORMAT, SCF_SELECTION) failed"));
1328     }
1329
1330     if ( changeSel )
1331     {
1332         // restore the original selection
1333         SendMessage(GetHwnd(), EM_SETSEL, (WPARAM)startOld, (LPARAM)endOld);
1334     }
1335
1336     return ok;
1337 }
1338
1339 // ----------------------------------------------------------------------------
1340 // wxRichEditModule
1341 // ----------------------------------------------------------------------------
1342
1343 bool wxRichEditModule::OnInit()
1344 {
1345     // don't do anything - we will load it when needed
1346     return TRUE;
1347 }
1348
1349 void wxRichEditModule::OnExit()
1350 {
1351     if ( ms_hRichEdit )
1352     {
1353         FreeLibrary(ms_hRichEdit);
1354     }
1355 }
1356
1357 /* static */
1358 bool wxRichEditModule::Load(int version)
1359 {
1360     wxCHECK_MSG( version >= 1 && version <= 3, FALSE,
1361                  _T("incorrect richedit control version requested") );
1362
1363     if ( version <= ms_verRichEdit )
1364     {
1365         // we've already got this or better
1366         return TRUE;
1367     }
1368
1369     if ( ms_hRichEdit )
1370     {
1371         ::FreeLibrary(ms_hRichEdit);
1372     }
1373
1374     // always try load riched20.dll first - like this we won't have to reload
1375     // it later if we're first asked for RE 1 and then for RE 2 or 3
1376     wxString dllname = _T("riched20.dll");
1377     ms_hRichEdit = ::LoadLibrary(dllname);
1378     ms_verRichEdit = 2; // no way to tell if it's 2 or 3, assume 2
1379
1380     if ( !ms_hRichEdit && (version == 1) )
1381     {
1382         // fall back to RE 1
1383         dllname = _T("riched32.dll");
1384         ms_hRichEdit = ::LoadLibrary(dllname);
1385         ms_verRichEdit = 1;
1386     }
1387
1388     if ( !ms_hRichEdit )
1389     {
1390         wxLogSysError(_("Could not load Rich Edit DLL '%s'"), dllname.c_str());
1391
1392         ms_verRichEdit = -1;
1393
1394         return FALSE;
1395     }
1396
1397     return TRUE;
1398 }
1399
1400 #endif // wxUSE_RICHEDIT
1401
1402 #endif // wxUSE_TEXTCTRL