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 #ifndef CFM_BACKCOLOR
  69     #define CFM_BACKCOLOR 0x04000000
  70 #endif
  71
  72 // cygwin does not have these defined for richedit
  73 #ifndef ENM_LINK
  74     #define ENM_LINK 0x04000000
  75 #endif
  76
  77 #ifndef EM_AUTOURLDETECT
  78     #define EM_AUTOURLDETECT (WM_USER + 91)
  79 #endif
  80
  81 #ifndef EN_LINK
  82     #define EN_LINK 0x070b
  83
  84     typedef struct _enlink
  85     {
  86         NMHDR nmhdr;
  87         UINT msg;
  88         WPARAM wParam;
  89         LPARAM lParam;
  90         CHARRANGE chrg;
  91     } ENLINK;
  92 #endif // ENLINK
  93
  94 #ifndef SF_UNICODE
  95     #define SF_UNICODE 0x0010
  96 #endif
  97
  98 // ----------------------------------------------------------------------------
  99 // private functions
 100 // ----------------------------------------------------------------------------
 101
 102 #if wxUSE_RICHEDIT
 103
 104 DWORD CALLBACK wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb);
 105
 106 #endif // wxUSE_RICHEDIT
 107
 108 // ----------------------------------------------------------------------------
 109 // private classes
 110 // ----------------------------------------------------------------------------
 111
 112 #if wxUSE_RICHEDIT
 113
 114 // this module initializes RichEdit DLL if needed
 115 class wxRichEditModule : public wxModule
 116 {
 117 public:
 118     virtual bool OnInit();
 119     virtual void OnExit();
 120
 121     // get the version currently loaded, -1 if none
 122     static int GetLoadedVersion() { return ms_verRichEdit; }
 123
 124     // load the richedit DLL of at least of required version
 125     static bool Load(int version = 1);
 126
 127 private:
 128     // the handle to richedit DLL and the version of the DLL loaded
 129     static HINSTANCE ms_hRichEdit;
 130
 131     // the DLL version loaded or -1 if none
 132     static int ms_verRichEdit;
 133
 134     DECLARE_DYNAMIC_CLASS(wxRichEditModule)
 135 };
 136
 137 HINSTANCE wxRichEditModule::ms_hRichEdit = (HINSTANCE)NULL;
 138 int       wxRichEditModule::ms_verRichEdit = -1;
 139
 140 IMPLEMENT_DYNAMIC_CLASS(wxRichEditModule, wxModule)
 141
 142 #endif // wxUSE_RICHEDIT
 143
 144 // ----------------------------------------------------------------------------
 145 // event tables and other macros
 146 // ----------------------------------------------------------------------------
 147
 148 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxControl)
 149
 150 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
 151     EVT_CHAR(wxTextCtrl::OnChar)
 152     EVT_DROP_FILES(wxTextCtrl::OnDropFiles)
 153
 154     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 155     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 156     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 157     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 158     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 159
 160     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 161     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 162     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 163     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 164     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 165 #ifdef __WIN16__
 166     EVT_ERASE_BACKGROUND(wxTextCtrl::OnEraseBackground)
 167 #endif
 168 END_EVENT_TABLE()
 169
 170 // ============================================================================
 171 // implementation
 172 // ============================================================================
 173
 174 // ----------------------------------------------------------------------------
 175 // creation
 176 // ----------------------------------------------------------------------------
 177
 178 void wxTextCtrl::Init()
 179 {
 180 #if wxUSE_RICHEDIT
 181     m_verRichEdit = 0;
 182 #endif
 183 }
 184
 185 bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id,
 186                         const wxString& value,
 187                         const wxPoint& pos,
 188                         const wxSize& size,
 189                         long style,
 190                         const wxValidator& validator,
 191                         const wxString& name)
 192 {
 193     // base initialization
 194     if ( !CreateBase(parent, id, pos, size, style, validator, name) )
 195         return FALSE;
 196
 197     if ( parent )
 198         parent->AddChild(this);
 199
 200     // translate wxWin style flags to MSW ones, checking for consistency while
 201     // doing it
 202     long msStyle = ES_LEFT | WS_TABSTOP;
 203
 204     if ( m_windowStyle & wxCLIP_SIBLINGS )
 205         msStyle |= WS_CLIPSIBLINGS;
 206
 207     if ( m_windowStyle & wxTE_MULTILINE )
 208     {
 209         wxASSERT_MSG( !(m_windowStyle & wxTE_PROCESS_ENTER),
 210                       wxT("wxTE_PROCESS_ENTER style is ignored for multiline text controls (they always process it)") );
 211
 212         msStyle |= ES_MULTILINE | ES_WANTRETURN;
 213         if ((m_windowStyle & wxTE_NO_VSCROLL) == 0)
 214             msStyle |= WS_VSCROLL;
 215         m_windowStyle |= wxTE_PROCESS_ENTER;
 216     }
 217     else // !multiline
 218     {
 219         // there is really no reason to not have this style for single line
 220         // text controls
 221         msStyle |= ES_AUTOHSCROLL;
 222     }
 223
 224     if ( m_windowStyle & wxHSCROLL )
 225         msStyle |= WS_HSCROLL | ES_AUTOHSCROLL;
 226
 227     if ( m_windowStyle & wxTE_READONLY )
 228         msStyle |= ES_READONLY;
 229
 230     if ( m_windowStyle & wxTE_PASSWORD )
 231         msStyle |= ES_PASSWORD;
 232
 233     if ( m_windowStyle & wxTE_AUTO_SCROLL )
 234         msStyle |= ES_AUTOHSCROLL;
 235
 236     if ( m_windowStyle & wxTE_NOHIDESEL )
 237         msStyle |= ES_NOHIDESEL;
 238
 239     // we always want the characters and the arrows
 240     m_lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
 241
 242     // we may have several different cases:
 243     // 1. normal case: both TAB and ENTER are used for dialog navigation
 244     // 2. ctrl which wants TAB for itself: ENTER is used to pass to the next
 245     //    control in the dialog
 246     // 3. ctrl which wants ENTER for itself: TAB is used for dialog navigation
 247     // 4. ctrl which wants both TAB and ENTER: Ctrl-ENTER is used to pass to
 248     //    the next control
 249     if ( m_windowStyle & wxTE_PROCESS_ENTER )
 250         m_lDlgCode |= DLGC_WANTMESSAGE;
 251     if ( m_windowStyle & wxTE_PROCESS_TAB )
 252         m_lDlgCode |= DLGC_WANTTAB;
 253
 254     // do create the control - either an EDIT or RICHEDIT
 255     wxString windowClass = wxT("EDIT");
 256
 257 #if wxUSE_RICHEDIT
 258     if ( m_windowStyle & wxTE_RICH )
 259     {
 260         static bool s_errorGiven = FALSE;   // MT-FIXME
 261
 262         // only give the error msg once if the DLL can't be loaded
 263         if ( !s_errorGiven )
 264         {
 265             // first try to load the RichEdit DLL (will do nothing if already
 266             // done)
 267             if ( !wxRichEditModule::Load() )
 268             {
 269                 wxLogError(_("Impossible to create a rich edit control, using simple text control instead. Please reinstall riched32.dll"));
 270
 271                 s_errorGiven = TRUE;
 272             }
 273         }
 274
 275         if ( !s_errorGiven )
 276         {
 277             msStyle |= ES_AUTOVSCROLL;
 278
 279             m_verRichEdit = wxRichEditModule::GetLoadedVersion();
 280             if ( m_verRichEdit == 1 )
 281             {
 282                 windowClass = wxT("RICHEDIT");
 283             }
 284             else
 285             {
 286 #ifndef RICHEDIT_CLASS
 287                 wxString RICHEDIT_CLASS;
 288                 RICHEDIT_CLASS.Printf(_T("RichEdit%d0"), m_verRichEdit);
 289 #if wxUSE_UNICODE
 290                 RICHEDIT_CLASS += _T('W');
 291 #else // ANSI
 292                 RICHEDIT_CLASS += _T('A');
 293 #endif // Unicode/ANSI
 294 #endif // !RICHEDIT_CLASS
 295
 296                 windowClass = RICHEDIT_CLASS;
 297             }
 298         }
 299     }
 300 #endif // wxUSE_RICHEDIT
 301
 302     // we need to turn '\n's into "\r\n"s for the multiline controls
 303     wxString valueWin;
 304     if ( m_windowStyle & wxTE_MULTILINE )
 305     {
 306         valueWin = wxTextFile::Translate(value, wxTextFileType_Dos);
 307     }
 308     else // single line
 309     {
 310         valueWin = value;
 311     }
 312
 313     if ( !MSWCreateControl(windowClass, msStyle, pos, size, valueWin) )
 314         return FALSE;
 315
 316     SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOW));
 317
 318 #if wxUSE_RICHEDIT
 319     if ( IsRich() )
 320     {
 321         // have to enable events manually
 322         LPARAM mask = ENM_CHANGE | ENM_DROPFILES | ENM_SELCHANGE | ENM_UPDATE;
 323
 324         if ( m_windowStyle & wxTE_AUTO_URL )
 325         {
 326             mask |= ENM_LINK;
 327
 328             ::SendMessage(GetHwnd(), EM_AUTOURLDETECT, TRUE, 0);
 329         }
 330
 331         ::SendMessage(GetHwnd(), EM_SETEVENTMASK, 0, mask);
 332     }
 333 #endif // wxUSE_RICHEDIT
 334
 335     return TRUE;
 336 }
 337
 338 // Make sure the window style (etc.) reflects the HWND style (roughly)
 339 void wxTextCtrl::AdoptAttributesFromHWND()
 340 {
 341     wxWindow::AdoptAttributesFromHWND();
 342
 343     HWND hWnd = GetHwnd();
 344     long style = ::GetWindowLong(hWnd, GWL_STYLE);
 345
 346     // retrieve the style to see whether this is an edit or richedit ctrl
 347 #if wxUSE_RICHEDIT
 348     wxString classname = wxGetWindowClass(GetHWND());
 349
 350     if ( classname.IsSameAs(_T("EDIT"), FALSE /* no case */) )
 351     {
 352         m_verRichEdit = 0;
 353     }
 354     else // rich edit?
 355     {
 356         wxChar c;
 357         if ( wxSscanf(classname, _T("RichEdit%d0%c"), &m_verRichEdit, &c) != 2 )
 358         {
 359             wxLogDebug(_T("Unknown edit control '%s'."), classname.c_str());
 360
 361             m_verRichEdit = 0;
 362         }
 363     }
 364 #endif // wxUSE_RICHEDIT
 365
 366     if (style & ES_MULTILINE)
 367         m_windowStyle |= wxTE_MULTILINE;
 368     if (style & ES_PASSWORD)
 369         m_windowStyle |= wxTE_PASSWORD;
 370     if (style & ES_READONLY)
 371         m_windowStyle |= wxTE_READONLY;
 372     if (style & ES_WANTRETURN)
 373         m_windowStyle |= wxTE_PROCESS_ENTER;
 374 }
 375
 376 // ----------------------------------------------------------------------------
 377 // set/get the controls text
 378 // ----------------------------------------------------------------------------
 379
 380 wxString wxTextCtrl::GetValue() const
 381 {
 382     // we can't use wxGetWindowText() (i.e. WM_GETTEXT internally) for
 383     // retrieving more than 64Kb under Win9x
 384 #if wxUSE_RICHEDIT
 385     if ( IsRich() )
 386     {
 387         wxString str;
 388
 389         int len = GetWindowTextLength(GetHwnd());
 390         if ( len )
 391         {
 392             // alloc one extra WORD as needed by the control
 393             wxChar *p = str.GetWriteBuf(++len);
 394
 395             TEXTRANGE textRange;
 396             textRange.chrg.cpMin = 0;
 397             textRange.chrg.cpMax = -1;
 398             textRange.lpstrText = p;
 399
 400             (void)SendMessage(GetHwnd(), EM_GETTEXTRANGE, 0, (LPARAM)&textRange);
 401
 402             // believe it or not, but EM_GETTEXTRANGE uses just CR ('\r') for
 403             // the newlines which is neither Unix nor Windows style (Win95 with
 404             // riched20.dll shows this behaviour) - convert it to something
 405             // reasonable
 406             for ( ; *p; p++ )
 407             {
 408                 if ( *p == _T('\r') )
 409                     *p = _T('\n');
 410             }
 411
 412             str.UngetWriteBuf();
 413         }
 414         //else: no text at all, leave the string empty
 415
 416         return str;
 417     }
 418 #endif // wxUSE_RICHEDIT
 419
 420     // WM_GETTEXT uses standard DOS CR+LF (\r\n) convention - convert to the
 421     // same one as above for consitency
 422     wxString str = wxGetWindowText(GetHWND());
 423
 424     return wxTextFile::Translate(str, wxTextFileType_Unix);
 425 }
 426
 427 void wxTextCtrl::SetValue(const wxString& value)
 428 {
 429     // if the text is long enough, it's faster to just set it instead of first
 430     // comparing it with the old one (chances are that it will be different
 431     // anyhow, this comparison is there to avoid flicker for small single-line
 432     // edit controls mostly)
 433     if ( (value.length() > 0x400) || (value != GetValue()) )
 434     {
 435         // it is simpler to do this but it could be more efficient to reproduce
 436         // WriteText() logic here
 437         Clear();
 438
 439         WriteText(value);
 440
 441         // for compatibility, don't move the cursor when doing SetValue()
 442         SetInsertionPoint(0);
 443     }
 444 }
 445
 446 #if wxUSE_RICHEDIT
 447
 448 DWORD CALLBACK wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb)
 449 {
 450     *pcb = 0;
 451
 452     wchar_t *wbuf = (wchar_t *)buf;
 453     const wchar_t *wpc = *(const wchar_t **)dwCookie;
 454     while ( cb && *wpc )
 455     {
 456         *wbuf++ = *wpc++;
 457
 458         cb -= sizeof(wchar_t);
 459         (*pcb) += sizeof(wchar_t);
 460     }
 461
 462     *(const wchar_t **)dwCookie = wpc;
 463
 464     return 0;
 465 }
 466
 467 extern long wxEncodingToCodepage(wxFontEncoding encoding); // from strconv.cpp
 468
 469 bool wxTextCtrl::StreamIn(const wxString& value, wxFontEncoding encoding)
 470 {
 471     // we have to use EM_STREAMIN to force richedit control 2.0+ to show any
 472     // text in the non default charset - otherwise it thinks it knows better
 473     // than we do and always shows it in the default one
 474
 475     // first get the Windows code page for this encoding
 476     long codepage = wxEncodingToCodepage(encoding);
 477     if ( codepage == -1 )
 478     {
 479         // unknown encoding
 480         return FALSE;
 481     }
 482
 483     // next translate to Unicode using this code page
 484     int len = ::MultiByteToWideChar(codepage, 0, value, -1, NULL, 0);
 485     wxWCharBuffer wchBuf(len);
 486     if ( !::MultiByteToWideChar(codepage, 0, value, -1,
 487                                 (wchar_t *)wchBuf.data(), len) )
 488     {
 489         wxLogLastError(_T("MultiByteToWideChar"));
 490     }
 491
 492     // finally, stream it in the control
 493     const wchar_t *wpc = wchBuf;
 494
 495     EDITSTREAM eds;
 496     wxZeroMemory(eds);
 497     eds.dwCookie = (DWORD)&wpc;
 498     // the cast below is needed for broken (very) old mingw32 headers
 499     eds.pfnCallback = (EDITSTREAMCALLBACK)wxRichEditStreamIn;
 500
 501     if ( !::SendMessage(GetHwnd(), EM_STREAMIN,
 502                         SF_TEXT | SF_UNICODE | SFF_SELECTION,
 503                         (LPARAM)&eds) || eds.dwError )
 504     {
 505         wxLogLastError(_T("EM_STREAMIN"));
 506
 507         return FALSE;
 508     }
 509
 510     return TRUE;
 511 }
 512
 513 #endif // wxUSE_RICHEDIT
 514
 515 void wxTextCtrl::WriteText(const wxString& value)
 516 {
 517     wxString valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
 518
 519 #if wxUSE_RICHEDIT
 520     // there are several complications with the rich edit controls here
 521     bool done = FALSE;
 522     if ( IsRich() )
 523     {
 524         // first, ensure that the new text will be in the default style
 525         if ( !m_defaultStyle.IsDefault() )
 526         {
 527             long start, end;
 528             GetSelection(&start, &end);
 529             SetStyle(start, end, m_defaultStyle );
 530         }
 531
 532         // next check if the text we're inserting must be shown in a non
 533         // default charset -- this only works for RichEdit > 1.0
 534         if ( GetRichVersion() > 1 )
 535         {
 536             wxFont font = m_defaultStyle.GetFont();
 537             if ( !font.Ok() )
 538                 font = GetFont();
 539
 540             if ( font.Ok() )
 541             {
 542                wxFontEncoding encoding = font.GetEncoding();
 543                if ( encoding != wxFONTENCODING_SYSTEM )
 544                {
 545                    done = StreamIn(valueDos, encoding);
 546                }
 547             }
 548         }
 549     }
 550
 551     if ( !done )
 552 #endif // wxUSE_RICHEDIT
 553     {
 554         ::SendMessage(GetHwnd(), EM_REPLACESEL, 0, (LPARAM)valueDos.c_str());
 555     }
 556
 557     AdjustSpaceLimit();
 558 }
 559
 560 void wxTextCtrl::AppendText(const wxString& text)
 561 {
 562     SetInsertionPointEnd();
 563
 564     WriteText(text);
 565 }
 566
 567 void wxTextCtrl::Clear()
 568 {
 569     ::SetWindowText(GetHwnd(), wxT(""));
 570 }
 571
 572 // ----------------------------------------------------------------------------
 573 // Clipboard operations
 574 // ----------------------------------------------------------------------------
 575
 576 void wxTextCtrl::Copy()
 577 {
 578     if (CanCopy())
 579     {
 580         HWND hWnd = GetHwnd();
 581         SendMessage(hWnd, WM_COPY, 0, 0L);
 582     }
 583 }
 584
 585 void wxTextCtrl::Cut()
 586 {
 587     if (CanCut())
 588     {
 589         HWND hWnd = GetHwnd();
 590         SendMessage(hWnd, WM_CUT, 0, 0L);
 591     }
 592 }
 593
 594 void wxTextCtrl::Paste()
 595 {
 596     if (CanPaste())
 597     {
 598         HWND hWnd = GetHwnd();
 599         SendMessage(hWnd, WM_PASTE, 0, 0L);
 600     }
 601 }
 602
 603 bool wxTextCtrl::CanCopy() const
 604 {
 605     // Can copy if there's a selection
 606     long from, to;
 607     GetSelection(& from, & to);
 608     return (from != to) ;
 609 }
 610
 611 bool wxTextCtrl::CanCut() const
 612 {
 613     // Can cut if there's a selection
 614     long from, to;
 615     GetSelection(& from, & to);
 616     return (from != to) && (IsEditable());
 617 }
 618
 619 bool wxTextCtrl::CanPaste() const
 620 {
 621     if ( !IsEditable() )
 622         return FALSE;
 623
 624 #if wxUSE_RICHEDIT
 625     if ( IsRich() )
 626     {
 627         UINT cf = 0; // 0 == any format
 628
 629         return ::SendMessage(GetHwnd(), EM_CANPASTE, cf, 0) != 0;
 630     }
 631 #endif // wxUSE_RICHEDIT
 632
 633     // Standard edit control: check for straight text on clipboard
 634     if ( !::OpenClipboard(GetHwndOf(wxTheApp->GetTopWindow())) )
 635         return FALSE;
 636
 637     bool isTextAvailable = ::IsClipboardFormatAvailable(CF_TEXT) != 0;
 638     ::CloseClipboard();
 639
 640     return isTextAvailable;
 641 }
 642
 643 // ----------------------------------------------------------------------------
 644 // Accessors
 645 // ----------------------------------------------------------------------------
 646
 647 void wxTextCtrl::SetEditable(bool editable)
 648 {
 649     HWND hWnd = GetHwnd();
 650     SendMessage(hWnd, EM_SETREADONLY, (WPARAM)!editable, (LPARAM)0L);
 651 }
 652
 653 void wxTextCtrl::SetInsertionPoint(long pos)
 654 {
 655     SetSelection(pos, pos);
 656
 657 #if wxUSE_RICHEDIT
 658     if ( !IsRich() )
 659 #endif
 660     {
 661         static const wxChar *nothing = _T("");
 662         SendMessage(GetHwnd(), EM_REPLACESEL, 0, (LPARAM)nothing);
 663     }
 664 }
 665
 666 void wxTextCtrl::SetInsertionPointEnd()
 667 {
 668     long pos = GetLastPosition();
 669     SetInsertionPoint(pos);
 670 }
 671
 672 long wxTextCtrl::GetInsertionPoint() const
 673 {
 674 #if wxUSE_RICHEDIT
 675     if ( IsRich() )
 676     {
 677         CHARRANGE range;
 678         range.cpMin = 0;
 679         range.cpMax = 0;
 680         SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
 681         return range.cpMin;
 682     }
 683 #endif // wxUSE_RICHEDIT
 684
 685     DWORD Pos = (DWORD)SendMessage(GetHwnd(), EM_GETSEL, 0, 0L);
 686     return Pos & 0xFFFF;
 687 }
 688
 689 long wxTextCtrl::GetLastPosition() const
 690 {
 691     HWND hWnd = GetHwnd();
 692
 693     // Will always return a number > 0 (according to docs)
 694     int noLines = (int)SendMessage(hWnd, EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0L);
 695
 696     // This gets the char index for the _beginning_ of the last line
 697     int charIndex = (int)SendMessage(hWnd, EM_LINEINDEX, (WPARAM)(noLines-1), (LPARAM)0L);
 698
 699     // Get number of characters in the last line. We'll add this to the character
 700     // index for the last line, 1st position.
 701     int lineLength = (int)SendMessage(hWnd, EM_LINELENGTH, (WPARAM)charIndex, (LPARAM)0L);
 702
 703     return (long)(charIndex + lineLength);
 704 }
 705
 706 // If the return values from and to are the same, there is no
 707 // selection.
 708 void wxTextCtrl::GetSelection(long* from, long* to) const
 709 {
 710 #if wxUSE_RICHEDIT
 711     if ( IsRich() )
 712     {
 713         CHARRANGE charRange;
 714         ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &charRange);
 715
 716         *from = charRange.cpMin;
 717         *to = charRange.cpMax;
 718     }
 719     else
 720 #endif // !wxUSE_RICHEDIT
 721     {
 722         DWORD dwStart, dwEnd;
 723         ::SendMessage(GetHwnd(), EM_GETSEL, (WPARAM)&dwStart, (LPARAM)&dwEnd);
 724
 725         *from = dwStart;
 726         *to = dwEnd;
 727     }
 728 }
 729
 730 wxString wxTextCtrl::GetStringSelection() const
 731 {
 732     // the base class version works correctly for the rich text controls
 733     // because there the lines are terminated with just '\r' which means that
 734     // the string length is not changed in the result of the translations doen
 735     // in GetValue() but for the normal ones when we replace "\r\n" with '\n'
 736     // we break the indices
 737 #if wxUSE_RICHEDIT
 738     if ( IsRich() )
 739         return wxTextCtrlBase::GetStringSelection();
 740 #endif // wxUSE_RICHEDIT
 741
 742     long from, to;
 743     GetSelection(&from, &to);
 744
 745     wxString str;
 746     if ( from < to )
 747     {
 748         str = wxGetWindowText(GetHWND()).Mid(from, to - from);
 749
 750         // and now that we have the correct selection, convert it to the
 751         // correct format
 752         str = wxTextFile::Translate(str, wxTextFileType_Unix);
 753     }
 754
 755     return str;
 756 }
 757
 758 bool wxTextCtrl::IsEditable() const
 759 {
 760     long style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
 761
 762     return ((style & ES_READONLY) == 0);
 763 }
 764
 765 // ----------------------------------------------------------------------------
 766 // selection
 767 // ----------------------------------------------------------------------------
 768
 769 void wxTextCtrl::SetSelection(long from, long to)
 770 {
 771     DoSetSelection(from, to);
 772 }
 773
 774 void wxTextCtrl::DoSetSelection(long from, long to, bool scrollCaret)
 775 {
 776     // if from and to are both -1, it means (in wxWindows) that all text should
 777     // be selected - translate into Windows convention
 778     if ( (from == -1) && (to == -1) )
 779     {
 780         from = 0;
 781         to = -1;
 782     }
 783
 784     HWND hWnd = GetHwnd();
 785
 786 #ifdef __WIN32__
 787 #if wxUSE_RICHEDIT
 788     if ( IsRich() )
 789     {
 790         CHARRANGE range;
 791         range.cpMin = from;
 792         range.cpMax = to;
 793         SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM) &range);
 794     }
 795     else
 796 #endif // wxUSE_RICHEDIT
 797     {
 798         SendMessage(hWnd, EM_SETSEL, (WPARAM)from, (LPARAM)to);
 799     }
 800
 801     if ( scrollCaret )
 802     {
 803         SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
 804     }
 805 #else // Win16
 806     // WPARAM is 0: selection is scrolled into view
 807     SendMessage(hWnd, EM_SETSEL, (WPARAM)0, (LPARAM)MAKELONG(from, to));
 808 #endif // Win32/16
 809 }
 810
 811 // ----------------------------------------------------------------------------
 812 // Editing
 813 // ----------------------------------------------------------------------------
 814
 815 void wxTextCtrl::Replace(long from, long to, const wxString& value)
 816 {
 817     // Set selection and remove it
 818     DoSetSelection(from, to, FALSE);
 819
 820     SendMessage(GetHwnd(), EM_REPLACESEL,
 821 #ifdef __WIN32__
 822                 TRUE,
 823 #else
 824                 FALSE,
 825 #endif
 826                 (LPARAM)value.c_str());
 827 }
 828
 829 void wxTextCtrl::Remove(long from, long to)
 830 {
 831     Replace(from, to, _T(""));
 832 }
 833
 834 bool wxTextCtrl::LoadFile(const wxString& file)
 835 {
 836     if ( wxTextCtrlBase::LoadFile(file) )
 837     {
 838         // update the size limit if needed
 839         AdjustSpaceLimit();
 840
 841         return TRUE;
 842     }
 843
 844     return FALSE;
 845 }
 846
 847 bool wxTextCtrl::IsModified() const
 848 {
 849     return (SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0);
 850 }
 851
 852 // Makes 'unmodified'
 853 void wxTextCtrl::DiscardEdits()
 854 {
 855     SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0L);
 856 }
 857
 858 int wxTextCtrl::GetNumberOfLines() const
 859 {
 860     return (int)SendMessage(GetHwnd(), EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0);
 861 }
 862
 863 long wxTextCtrl::XYToPosition(long x, long y) const
 864 {
 865     HWND hWnd = GetHwnd();
 866
 867     // This gets the char index for the _beginning_ of this line
 868     int charIndex = (int)SendMessage(hWnd, EM_LINEINDEX, (WPARAM)y, (LPARAM)0);
 869     return (long)(x + charIndex);
 870 }
 871
 872 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
 873 {
 874     HWND hWnd = GetHwnd();
 875
 876     // This gets the line number containing the character
 877     int lineNo;
 878 #if wxUSE_RICHEDIT
 879     if ( IsRich() )
 880     {
 881         lineNo = (int)SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, (LPARAM)pos);
 882     }
 883     else
 884 #endif // wxUSE_RICHEDIT
 885         lineNo = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, 0);
 886
 887     if ( lineNo == -1 )
 888     {
 889         // no such line
 890         return FALSE;
 891     }
 892
 893     // This gets the char index for the _beginning_ of this line
 894     int charIndex = (int)SendMessage(hWnd, EM_LINEINDEX, (WPARAM)lineNo, (LPARAM)0);
 895     if ( charIndex == -1 )
 896     {
 897         return FALSE;
 898     }
 899
 900     // The X position must therefore be the different between pos and charIndex
 901     if ( x )
 902         *x = (long)(pos - charIndex);
 903     if ( y )
 904         *y = (long)lineNo;
 905
 906     return TRUE;
 907 }
 908
 909 void wxTextCtrl::ShowPosition(long pos)
 910 {
 911     HWND hWnd = GetHwnd();
 912
 913     // To scroll to a position, we pass the number of lines and characters
 914     // to scroll *by*. This means that we need to:
 915     // (1) Find the line position of the current line.
 916     // (2) Find the line position of pos.
 917     // (3) Scroll by (pos - current).
 918     // For now, ignore the horizontal scrolling.
 919
 920     // Is this where scrolling is relative to - the line containing the caret?
 921     // Or is the first visible line??? Try first visible line.
 922 //    int currentLineLineNo1 = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)-1, (LPARAM)0L);
 923
 924     int currentLineLineNo = (int)SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, (WPARAM)0, (LPARAM)0L);
 925
 926     int specifiedLineLineNo = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, (LPARAM)0L);
 927
 928     int linesToScroll = specifiedLineLineNo - currentLineLineNo;
 929
 930     if (linesToScroll != 0)
 931       (void)SendMessage(hWnd, EM_LINESCROLL, (WPARAM)0, (LPARAM)linesToScroll);
 932 }
 933
 934 int wxTextCtrl::GetLineLength(long lineNo) const
 935 {
 936     long charIndex = XYToPosition(0, lineNo);
 937     int len = (int)SendMessage(GetHwnd(), EM_LINELENGTH, charIndex, 0);
 938     return len;
 939 }
 940
 941 wxString wxTextCtrl::GetLineText(long lineNo) const
 942 {
 943     size_t len = (size_t)GetLineLength(lineNo) + 1;
 944
 945     // there must be at least enough place for the length WORD in the
 946     // buffer
 947     len += sizeof(WORD);
 948
 949     wxString str;
 950     wxChar *buf = str.GetWriteBuf(len);
 951
 952     *(WORD *)buf = (WORD)len;
 953     len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf);
 954     buf[len] = 0;
 955
 956     str.UngetWriteBuf(len);
 957
 958     return str;
 959 }
 960
 961 void wxTextCtrl::SetMaxLength(unsigned long len)
 962 {
 963     ::SendMessage(GetHwnd(), EM_LIMITTEXT, len, 0);
 964 }
 965
 966 // ----------------------------------------------------------------------------
 967 // Undo/redo
 968 // ----------------------------------------------------------------------------
 969
 970 void wxTextCtrl::Undo()
 971 {
 972     if (CanUndo())
 973     {
 974         ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
 975     }
 976 }
 977
 978 void wxTextCtrl::Redo()
 979 {
 980     if (CanRedo())
 981     {
 982         // Same as Undo, since Undo undoes the undo, i.e. a redo.
 983         ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
 984     }
 985 }
 986
 987 bool wxTextCtrl::CanUndo() const
 988 {
 989     return (::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0);
 990 }
 991
 992 bool wxTextCtrl::CanRedo() const
 993 {
 994     return (::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0);
 995 }
 996
 997 // ----------------------------------------------------------------------------
 998 // implemenation details
 999 // ----------------------------------------------------------------------------
1000
1001 void wxTextCtrl::Command(wxCommandEvent & event)
1002 {
1003     SetValue(event.GetString());
1004     ProcessCommand (event);
1005 }
1006
1007 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
1008 {
1009     // By default, load the first file into the text window.
1010     if (event.GetNumberOfFiles() > 0)
1011     {
1012         LoadFile(event.GetFiles()[0]);
1013     }
1014 }
1015
1016 // ----------------------------------------------------------------------------
1017 // kbd input processing
1018 // ----------------------------------------------------------------------------
1019
1020 bool wxTextCtrl::MSWShouldPreProcessMessage(WXMSG* pMsg)
1021 {
1022     MSG *msg = (MSG *)pMsg;
1023
1024     // check for our special keys here: if we don't do it and the parent frame
1025     // uses them as accelerators, they wouldn't work at all, so we disable
1026     // usual preprocessing for them
1027     if ( msg->message == WM_KEYDOWN )
1028     {
1029         WORD vkey = msg->wParam;
1030         if ( (HIWORD(msg->lParam) & KF_ALTDOWN) == KF_ALTDOWN )
1031         {
1032             if ( vkey == VK_BACK )
1033                 return FALSE;
1034         }
1035         else // no Alt
1036         {
1037             if ( wxIsCtrlDown() )
1038             {
1039                 switch ( vkey )
1040                 {
1041                     case 'C':
1042                     case 'V':
1043                     case 'X':
1044                     case VK_INSERT:
1045                     case VK_DELETE:
1046                     case VK_HOME:
1047                     case VK_END:
1048                         return FALSE;
1049                 }
1050             }
1051             else if ( wxIsShiftDown() )
1052             {
1053                 if ( vkey == VK_INSERT || vkey == VK_DELETE )
1054                     return FALSE;
1055             }
1056         }
1057     }
1058
1059     return wxControl::MSWShouldPreProcessMessage(pMsg);
1060 }
1061
1062 void wxTextCtrl::OnChar(wxKeyEvent& event)
1063 {
1064     switch ( event.KeyCode() )
1065     {
1066         case WXK_RETURN:
1067             if ( !(m_windowStyle & wxTE_MULTILINE) )
1068             {
1069                 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1070                 InitCommandEvent(event);
1071                 event.SetString(GetValue());
1072                 if ( GetEventHandler()->ProcessEvent(event) )
1073                     return;
1074             }
1075             //else: multiline controls need Enter for themselves
1076
1077             break;
1078
1079         case WXK_TAB:
1080             // always produce navigation event - even if we process TAB
1081             // ourselves the fact that we got here means that the user code
1082             // decided to skip processing of this TAB - probably to let it
1083             // do its default job.
1084             {
1085                 wxNavigationKeyEvent eventNav;
1086                 eventNav.SetDirection(!event.ShiftDown());
1087                 eventNav.SetWindowChange(event.ControlDown());
1088                 eventNav.SetEventObject(this);
1089
1090                 if ( GetParent()->GetEventHandler()->ProcessEvent(eventNav) )
1091                     return;
1092             }
1093             break;
1094     }
1095
1096     // no, we didn't process it
1097     event.Skip();
1098 }
1099
1100 bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
1101 {
1102     switch (param)
1103     {
1104         case EN_SETFOCUS:
1105         case EN_KILLFOCUS:
1106             {
1107                 wxFocusEvent event(param == EN_KILLFOCUS ? wxEVT_KILL_FOCUS
1108                                                          : wxEVT_SET_FOCUS,
1109                                    m_windowId);
1110                 event.SetEventObject( this );
1111                 GetEventHandler()->ProcessEvent(event);
1112             }
1113             break;
1114
1115         case EN_CHANGE:
1116             {
1117                 wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, m_windowId);
1118                 InitCommandEvent(event);
1119                 event.SetString(GetValue());
1120                 ProcessCommand(event);
1121             }
1122             break;
1123
1124         case EN_MAXTEXT:
1125             // the text size limit has been hit - increase it
1126             if ( !AdjustSpaceLimit() )
1127             {
1128                 wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, m_windowId);
1129                 InitCommandEvent(event);
1130                 event.SetString(GetValue());
1131                 ProcessCommand(event);
1132             }
1133             break;
1134
1135             // the other notification messages are not processed
1136         case EN_UPDATE:
1137         case EN_ERRSPACE:
1138         case EN_HSCROLL:
1139         case EN_VSCROLL:
1140             return FALSE;
1141         default:
1142             return FALSE;
1143     }
1144
1145     // processed
1146     return TRUE;
1147 }
1148
1149 WXHBRUSH wxTextCtrl::OnCtlColor(WXHDC pDC, WXHWND WXUNUSED(pWnd), WXUINT WXUNUSED(nCtlColor),
1150 #if wxUSE_CTL3D
1151                                WXUINT message,
1152                                WXWPARAM wParam,
1153                                WXLPARAM lParam
1154 #else
1155                                WXUINT WXUNUSED(message),
1156                                WXWPARAM WXUNUSED(wParam),
1157                                WXLPARAM WXUNUSED(lParam)
1158 #endif
1159     )
1160 {
1161 #if wxUSE_CTL3D
1162     if ( m_useCtl3D )
1163     {
1164         HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
1165         return (WXHBRUSH) hbrush;
1166     }
1167 #endif // wxUSE_CTL3D
1168
1169     HDC hdc = (HDC)pDC;
1170     if (GetParent()->GetTransparentBackground())
1171         SetBkMode(hdc, TRANSPARENT);
1172     else
1173         SetBkMode(hdc, OPAQUE);
1174
1175     wxColour colBack = GetBackgroundColour();
1176
1177     if (!IsEnabled() && (GetWindowStyle() & wxTE_MULTILINE) == 0)
1178         colBack = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE);
1179
1180     ::SetBkColor(hdc, wxColourToRGB(colBack));
1181     ::SetTextColor(hdc, wxColourToRGB(GetForegroundColour()));
1182
1183     wxBrush *brush = wxTheBrushList->FindOrCreateBrush(colBack, wxSOLID);
1184
1185     return (WXHBRUSH)brush->GetResourceHandle();
1186 }
1187
1188 // In WIN16, need to override normal erasing because
1189 // Ctl3D doesn't use the wxWindows background colour.
1190 #ifdef __WIN16__
1191 void wxTextCtrl::OnEraseBackground(wxEraseEvent& event)
1192 {
1193     wxColour col(m_backgroundColour);
1194
1195 #if wxUSE_CTL3D
1196     if (m_useCtl3D)
1197         col = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOW);
1198 #endif
1199
1200     RECT rect;
1201     ::GetClientRect(GetHwnd(), &rect);
1202
1203     COLORREF ref = PALETTERGB(col.Red(),
1204                               col.Green(),
1205                               col.Blue());
1206     HBRUSH hBrush = ::CreateSolidBrush(ref);
1207     if ( !hBrush )
1208         wxLogLastError(wxT("CreateSolidBrush"));
1209
1210     HDC hdc = (HDC)event.GetDC()->GetHDC();
1211
1212     int mode = ::SetMapMode(hdc, MM_TEXT);
1213
1214     ::FillRect(hdc, &rect, hBrush);
1215     ::DeleteObject(hBrush);
1216     ::SetMapMode(hdc, mode);
1217
1218 }
1219 #endif // Win16
1220
1221 bool wxTextCtrl::AdjustSpaceLimit()
1222 {
1223 #ifndef __WIN16__
1224     unsigned int limit = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
1225
1226     // HACK: we try to automatically extend the limit for the amount of text
1227     //       to allow (interactively) entering more than 64Kb of text under
1228     //       Win9x but we shouldn't reset the text limit which was previously
1229     //       set explicitly with SetMaxLength()
1230     //
1231     //       we could solve this by storing the limit we set in wxTextCtrl but
1232     //       to save space we prefer to simply test here the actual limit
1233     //       value: we consider that SetMaxLength() can only be called for
1234     //       values < 32Kb
1235     if ( limit < 0x8000 )
1236     {
1237         // we've got more text than limit set by SetMaxLength()
1238         return FALSE;
1239     }
1240
1241     unsigned int len = ::GetWindowTextLength(GetHwnd());
1242     if ( len >= limit )
1243     {
1244         limit = len + 0x8000;    // 32Kb
1245
1246 #if wxUSE_RICHEDIT
1247         if ( IsRich() )
1248         {
1249             // as a nice side effect, this also allows passing limit > 64Kb
1250             ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, limit);
1251         }
1252         else
1253 #endif // wxUSE_RICHEDIT
1254         {
1255             if ( limit > 0xffff )
1256             {
1257                 // this will set it to a platform-dependent maximum (much more
1258                 // than 64Kb under NT)
1259                 limit = 0;
1260             }
1261
1262             ::SendMessage(GetHwnd(), EM_LIMITTEXT, limit, 0);
1263         }
1264     }
1265 #endif // !Win16
1266
1267     // we changed the limit
1268     return TRUE;
1269 }
1270
1271 bool wxTextCtrl::AcceptsFocus() const
1272 {
1273     // we don't want focus if we can't be edited
1274     return IsEditable() && wxControl::AcceptsFocus();
1275 }
1276
1277 wxSize wxTextCtrl::DoGetBestSize() const
1278 {
1279     int cx, cy;
1280     wxGetCharSize(GetHWND(), &cx, &cy, &GetFont());
1281
1282     int wText = DEFAULT_ITEM_WIDTH;
1283
1284     int hText = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy);
1285     if ( m_windowStyle & wxTE_MULTILINE )
1286     {
1287         hText *= wxMax(GetNumberOfLines(), 5);
1288     }
1289     //else: for single line control everything is ok
1290
1291     return wxSize(wText, hText);
1292 }
1293
1294 // ----------------------------------------------------------------------------
1295 // standard handlers for standard edit menu events
1296 // ----------------------------------------------------------------------------
1297
1298 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1299 {
1300     Cut();
1301 }
1302
1303 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1304 {
1305     Copy();
1306 }
1307
1308 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1309 {
1310     Paste();
1311 }
1312
1313 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1314 {
1315     Undo();
1316 }
1317
1318 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1319 {
1320     Redo();
1321 }
1322
1323 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1324 {
1325     event.Enable( CanCut() );
1326 }
1327
1328 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1329 {
1330     event.Enable( CanCopy() );
1331 }
1332
1333 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1334 {
1335     event.Enable( CanPaste() );
1336 }
1337
1338 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1339 {
1340     event.Enable( CanUndo() );
1341 }
1342
1343 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1344 {
1345     event.Enable( CanRedo() );
1346 }
1347
1348 // the rest of the file only deals with the rich edit controls
1349 #if wxUSE_RICHEDIT
1350
1351 // ----------------------------------------------------------------------------
1352 // EN_LINK processing
1353 // ----------------------------------------------------------------------------
1354
1355 bool wxTextCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
1356 {
1357     NMHDR *hdr = (NMHDR* )lParam;
1358     if ( hdr->code == EN_LINK )
1359     {
1360         ENLINK *enlink = (ENLINK *)hdr;
1361
1362         switch ( enlink->msg )
1363         {
1364             case WM_SETCURSOR:
1365                 // ok, so it is hardcoded - do we really nee to customize it?
1366                 ::SetCursor(GetHcursorOf(wxCursor(wxCURSOR_HAND)));
1367                 *result = TRUE;
1368                 break;
1369
1370             case WM_MOUSEMOVE:
1371             case WM_LBUTTONDOWN:
1372             case WM_LBUTTONUP:
1373             case WM_LBUTTONDBLCLK:
1374             case WM_RBUTTONDOWN:
1375             case WM_RBUTTONUP:
1376             case WM_RBUTTONDBLCLK:
1377                 // send a mouse event
1378                 {
1379                     static const wxEventType eventsMouse[] =
1380                     {
1381                         wxEVT_MOTION,
1382                         wxEVT_LEFT_DOWN,
1383                         wxEVT_LEFT_UP,
1384                         wxEVT_LEFT_DCLICK,
1385                         wxEVT_RIGHT_DOWN,
1386                         wxEVT_RIGHT_UP,
1387                         wxEVT_RIGHT_DCLICK,
1388                     };
1389
1390                     // the event ids are consecutive
1391                     wxMouseEvent
1392                         evtMouse(eventsMouse[enlink->msg - WM_MOUSEMOVE]);
1393
1394                     InitMouseEvent(evtMouse,
1395                                    GET_X_LPARAM(enlink->lParam),
1396                                    GET_Y_LPARAM(enlink->lParam),
1397                                    enlink->wParam);
1398
1399                     wxTextUrlEvent event(m_windowId, evtMouse,
1400                                          enlink->chrg.cpMin,
1401                                          enlink->chrg.cpMax);
1402
1403                     InitCommandEvent(event);
1404
1405                     *result = ProcessCommand(event);
1406                 }
1407                 break;
1408         }
1409
1410         return TRUE;
1411     }
1412
1413     // not processed
1414     return FALSE;
1415 }
1416
1417 // ----------------------------------------------------------------------------
1418 // colour setting for the rich edit controls
1419 // ----------------------------------------------------------------------------
1420
1421 // Watcom C++ doesn't define this
1422 #ifndef SCF_ALL
1423 #define SCF_ALL 0x0004
1424 #endif
1425
1426 bool wxTextCtrl::SetBackgroundColour(const wxColour& colour)
1427 {
1428     if ( !wxTextCtrlBase::SetBackgroundColour(colour) )
1429     {
1430         // colour didn't really change
1431         return FALSE;
1432     }
1433
1434     if ( IsRich() )
1435     {
1436         // rich edit doesn't use WM_CTLCOLOR, hence we need to send
1437         // EM_SETBKGNDCOLOR additionally
1438         ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour));
1439     }
1440
1441     return TRUE;
1442 }
1443
1444 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1445 {
1446     if ( !wxTextCtrlBase::SetForegroundColour(colour) )
1447     {
1448         // colour didn't really change
1449         return FALSE;
1450     }
1451
1452     if ( IsRich() )
1453     {
1454         // change the colour of everything
1455         CHARFORMAT cf;
1456         wxZeroMemory(cf);
1457         cf.cbSize = sizeof(cf);
1458         cf.dwMask = CFM_COLOR;
1459         cf.crTextColor = wxColourToRGB(colour);
1460         ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf);
1461     }
1462
1463     return TRUE;
1464 }
1465
1466 // ----------------------------------------------------------------------------
1467 // styling support for rich edit controls
1468 // ----------------------------------------------------------------------------
1469
1470 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
1471 {
1472     if ( !IsRich() )
1473     {
1474         // can't do it with normal text control
1475         return FALSE;
1476     }
1477
1478     // the rich text control doesn't handle setting background colour, so don't
1479     // even try if it's the only thing we want to change
1480     if ( wxRichEditModule::GetLoadedVersion() < 2 &&
1481          !style.HasFont() && !style.HasTextColour() )
1482     {
1483         // nothing to do: return TRUE if there was really nothing to do and
1484         // FALSE if we failed to set bg colour
1485         return !style.HasBackgroundColour();
1486     }
1487
1488     // order the range if needed
1489     if ( start > end )
1490     {
1491         long tmp = start;
1492         start = end;
1493         end = tmp;
1494     }
1495
1496     // we can only change the format of the selection, so select the range we
1497     // want and restore the old selection later
1498     long startOld, endOld;
1499     GetSelection(&startOld, &endOld);
1500
1501     // but do we really have to change the selection?
1502     bool changeSel = start != startOld || end != endOld;
1503
1504     if ( changeSel )
1505     {
1506         DoSetSelection(start, end, FALSE);
1507     }
1508
1509     // initialize CHARFORMAT struct
1510 #if wxUSE_RICHEDIT2
1511     CHARFORMAT2 cf;
1512 #else
1513     CHARFORMAT cf;
1514 #endif
1515     wxZeroMemory(cf);
1516     cf.cbSize = sizeof(cf);
1517
1518     if ( style.HasFont() )
1519     {
1520         // VZ: CFM_CHARSET doesn't seem to do anything at all in RichEdit 2.0
1521         //     but using it doesn't seem to hurt neither so leaving it for now
1522
1523         cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET |
1524                      CFM_ITALIC | CFM_BOLD | CFM_UNDERLINE;
1525
1526         // fill in data from LOGFONT but recalculate lfHeight because we need
1527         // the real height in twips and not the negative number which
1528         // wxFillLogFont() returns (this is correct in general and works with
1529         // the Windows font mapper, but not here)
1530         LOGFONT lf;
1531         wxFillLogFont(&lf, &style.GetFont());
1532         cf.yHeight = 20*style.GetFont().GetPointSize(); // 1 pt = 20 twips
1533         cf.bCharSet = lf.lfCharSet;
1534         cf.bPitchAndFamily = lf.lfPitchAndFamily;
1535         wxStrncpy( cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName) );
1536
1537         // also deal with underline/italic/bold attributes: note that we must
1538         // always set CFM_ITALIC &c bits in dwMask, even if we don't set the
1539         // style to allow clearing it
1540         if ( lf.lfItalic )
1541         {
1542             cf.dwEffects |= CFE_ITALIC;
1543         }
1544
1545         if ( lf.lfWeight == FW_BOLD )
1546         {
1547             cf.dwEffects |= CFE_BOLD;
1548         }
1549
1550         if ( lf.lfUnderline )
1551         {
1552             cf.dwEffects |= CFE_UNDERLINE;
1553         }
1554
1555         // strikeout fonts are not supported by wxWindows
1556     }
1557
1558     if ( style.HasTextColour() )
1559     {
1560         cf.dwMask |= CFM_COLOR;
1561         cf.crTextColor = wxColourToRGB(style.GetTextColour());
1562     }
1563
1564 #if wxUSE_RICHEDIT2
1565     if ( wxRichEditModule::GetLoadedVersion() > 1 && style.HasBackgroundColour() )
1566     {
1567         cf.dwMask |= CFM_BACKCOLOR;
1568         cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
1569     }
1570 #endif // wxUSE_RICHEDIT2
1571
1572     // do format the selection
1573     bool ok = ::SendMessage(GetHwnd(), EM_SETCHARFORMAT,
1574                             SCF_SELECTION, (LPARAM)&cf) != 0;
1575     if ( !ok )
1576     {
1577         wxLogDebug(_T("SendMessage(EM_SETCHARFORMAT, SCF_SELECTION) failed"));
1578     }
1579
1580     if ( changeSel )
1581     {
1582         // restore the original selection
1583         DoSetSelection(startOld, endOld, FALSE);
1584     }
1585
1586     return ok;
1587 }
1588
1589 // ----------------------------------------------------------------------------
1590 // wxRichEditModule
1591 // ----------------------------------------------------------------------------
1592
1593 bool wxRichEditModule::OnInit()
1594 {
1595     // don't do anything - we will load it when needed
1596     return TRUE;
1597 }
1598
1599 void wxRichEditModule::OnExit()
1600 {
1601     if ( ms_hRichEdit )
1602     {
1603         FreeLibrary(ms_hRichEdit);
1604     }
1605 }
1606
1607 /* static */
1608 bool wxRichEditModule::Load(int version)
1609 {
1610     wxCHECK_MSG( version >= 1 && version <= 3, FALSE,
1611                  _T("incorrect richedit control version requested") );
1612
1613     if ( version <= ms_verRichEdit )
1614     {
1615         // we've already got this or better
1616         return TRUE;
1617     }
1618
1619     if ( ms_hRichEdit )
1620     {
1621         ::FreeLibrary(ms_hRichEdit);
1622     }
1623
1624     // always try load riched20.dll first - like this we won't have to reload
1625     // it later if we're first asked for RE 1 and then for RE 2 or 3
1626     wxString dllname = _T("riched20.dll");
1627     ms_hRichEdit = ::LoadLibrary(dllname);
1628     ms_verRichEdit = 2; // no way to tell if it's 2 or 3, assume 2
1629
1630     if ( !ms_hRichEdit && (version == 1) )
1631     {
1632         // fall back to RE 1
1633         dllname = _T("riched32.dll");
1634         ms_hRichEdit = ::LoadLibrary(dllname);
1635         ms_verRichEdit = 1;
1636     }
1637
1638     if ( !ms_hRichEdit )
1639     {
1640         wxLogSysError(_("Could not load Rich Edit DLL '%s'"), dllname.c_str());
1641
1642         ms_verRichEdit = -1;
1643
1644         return FALSE;
1645     }
1646
1647     return TRUE;
1648 }
1649
1650 #endif // wxUSE_RICHEDIT
1651
1652 #endif // wxUSE_TEXTCTRL