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 #if !wxUSE_UNICODE
 472     // we have to use EM_STREAMIN to force richedit control 2.0+ to show any
 473     // text in the non default charset - otherwise it thinks it knows better
 474     // than we do and always shows it in the default one
 475
 476     // first get the Windows code page for this encoding
 477     long codepage = wxEncodingToCodepage(encoding);
 478     if ( codepage == -1 )
 479     {
 480         // unknown encoding
 481         return FALSE;
 482     }
 483
 484     // next translate to Unicode using this code page
 485     int len = ::MultiByteToWideChar(codepage, 0, value, -1, NULL, 0);
 486     wxWCharBuffer wchBuf(len);
 487     if ( !::MultiByteToWideChar(codepage, 0, value, -1,
 488                                 (wchar_t *)wchBuf.data(), len) )
 489     {
 490         wxLogLastError(_T("MultiByteToWideChar"));
 491     }
 492
 493     // finally, stream it in the control
 494     const wchar_t *wpc = wchBuf;
 495 #else
 496     const wchar_t *wpc = value.c_str();
 497 #endif
 498
 499     EDITSTREAM eds;
 500     wxZeroMemory(eds);
 501     eds.dwCookie = (DWORD)&wpc;
 502     // the cast below is needed for broken (very) old mingw32 headers
 503     eds.pfnCallback = (EDITSTREAMCALLBACK)wxRichEditStreamIn;
 504
 505     if ( !::SendMessage(GetHwnd(), EM_STREAMIN,
 506                         SF_TEXT | SF_UNICODE | SFF_SELECTION,
 507                         (LPARAM)&eds) || eds.dwError )
 508     {
 509         wxLogLastError(_T("EM_STREAMIN"));
 510
 511         return FALSE;
 512     }
 513
 514     return TRUE;
 515 }
 516
 517 #endif // wxUSE_RICHEDIT
 518
 519 void wxTextCtrl::WriteText(const wxString& value)
 520 {
 521     wxString valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
 522
 523 #if wxUSE_RICHEDIT
 524     // there are several complications with the rich edit controls here
 525     bool done = FALSE;
 526     if ( IsRich() )
 527     {
 528         // first, ensure that the new text will be in the default style
 529         if ( !m_defaultStyle.IsDefault() )
 530         {
 531             long start, end;
 532             GetSelection(&start, &end);
 533             SetStyle(start, end, m_defaultStyle );
 534         }
 535
 536         // next check if the text we're inserting must be shown in a non
 537         // default charset -- this only works for RichEdit > 1.0
 538         if ( GetRichVersion() > 1 )
 539         {
 540             wxFont font = m_defaultStyle.GetFont();
 541             if ( !font.Ok() )
 542                 font = GetFont();
 543
 544             if ( font.Ok() )
 545             {
 546                wxFontEncoding encoding = font.GetEncoding();
 547                if ( encoding != wxFONTENCODING_SYSTEM )
 548                {
 549                    done = StreamIn(valueDos, encoding);
 550                }
 551             }
 552         }
 553     }
 554
 555     if ( !done )
 556 #endif // wxUSE_RICHEDIT
 557     {
 558         ::SendMessage(GetHwnd(), EM_REPLACESEL, 0, (LPARAM)valueDos.c_str());
 559     }
 560
 561     AdjustSpaceLimit();
 562 }
 563
 564 void wxTextCtrl::AppendText(const wxString& text)
 565 {
 566     SetInsertionPointEnd();
 567
 568     WriteText(text);
 569 }
 570
 571 void wxTextCtrl::Clear()
 572 {
 573     ::SetWindowText(GetHwnd(), wxT(""));
 574 }
 575
 576 // ----------------------------------------------------------------------------
 577 // Clipboard operations
 578 // ----------------------------------------------------------------------------
 579
 580 void wxTextCtrl::Copy()
 581 {
 582     if (CanCopy())
 583     {
 584         HWND hWnd = GetHwnd();
 585         SendMessage(hWnd, WM_COPY, 0, 0L);
 586     }
 587 }
 588
 589 void wxTextCtrl::Cut()
 590 {
 591     if (CanCut())
 592     {
 593         HWND hWnd = GetHwnd();
 594         SendMessage(hWnd, WM_CUT, 0, 0L);
 595     }
 596 }
 597
 598 void wxTextCtrl::Paste()
 599 {
 600     if (CanPaste())
 601     {
 602         HWND hWnd = GetHwnd();
 603         SendMessage(hWnd, WM_PASTE, 0, 0L);
 604     }
 605 }
 606
 607 bool wxTextCtrl::CanCopy() const
 608 {
 609     // Can copy if there's a selection
 610     long from, to;
 611     GetSelection(& from, & to);
 612     return (from != to) ;
 613 }
 614
 615 bool wxTextCtrl::CanCut() const
 616 {
 617     // Can cut if there's a selection
 618     long from, to;
 619     GetSelection(& from, & to);
 620     return (from != to) && (IsEditable());
 621 }
 622
 623 bool wxTextCtrl::CanPaste() const
 624 {
 625     if ( !IsEditable() )
 626         return FALSE;
 627
 628 #if wxUSE_RICHEDIT
 629     if ( IsRich() )
 630     {
 631         UINT cf = 0; // 0 == any format
 632
 633         return ::SendMessage(GetHwnd(), EM_CANPASTE, cf, 0) != 0;
 634     }
 635 #endif // wxUSE_RICHEDIT
 636
 637     // Standard edit control: check for straight text on clipboard
 638     if ( !::OpenClipboard(GetHwndOf(wxTheApp->GetTopWindow())) )
 639         return FALSE;
 640
 641     bool isTextAvailable = ::IsClipboardFormatAvailable(CF_TEXT) != 0;
 642     ::CloseClipboard();
 643
 644     return isTextAvailable;
 645 }
 646
 647 // ----------------------------------------------------------------------------
 648 // Accessors
 649 // ----------------------------------------------------------------------------
 650
 651 void wxTextCtrl::SetEditable(bool editable)
 652 {
 653     HWND hWnd = GetHwnd();
 654     SendMessage(hWnd, EM_SETREADONLY, (WPARAM)!editable, (LPARAM)0L);
 655 }
 656
 657 void wxTextCtrl::SetInsertionPoint(long pos)
 658 {
 659     SetSelection(pos, pos);
 660
 661 #if wxUSE_RICHEDIT
 662     if ( !IsRich() )
 663 #endif
 664     {
 665         static const wxChar *nothing = _T("");
 666         SendMessage(GetHwnd(), EM_REPLACESEL, 0, (LPARAM)nothing);
 667     }
 668 }
 669
 670 void wxTextCtrl::SetInsertionPointEnd()
 671 {
 672     long pos = GetLastPosition();
 673     SetInsertionPoint(pos);
 674 }
 675
 676 long wxTextCtrl::GetInsertionPoint() const
 677 {
 678 #if wxUSE_RICHEDIT
 679     if ( IsRich() )
 680     {
 681         CHARRANGE range;
 682         range.cpMin = 0;
 683         range.cpMax = 0;
 684         SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
 685         return range.cpMin;
 686     }
 687 #endif // wxUSE_RICHEDIT
 688
 689     DWORD Pos = (DWORD)SendMessage(GetHwnd(), EM_GETSEL, 0, 0L);
 690     return Pos & 0xFFFF;
 691 }
 692
 693 long wxTextCtrl::GetLastPosition() const
 694 {
 695     HWND hWnd = GetHwnd();
 696
 697     // Will always return a number > 0 (according to docs)
 698     int noLines = (int)SendMessage(hWnd, EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0L);
 699
 700     // This gets the char index for the _beginning_ of the last line
 701     int charIndex = (int)SendMessage(hWnd, EM_LINEINDEX, (WPARAM)(noLines-1), (LPARAM)0L);
 702
 703     // Get number of characters in the last line. We'll add this to the character
 704     // index for the last line, 1st position.
 705     int lineLength = (int)SendMessage(hWnd, EM_LINELENGTH, (WPARAM)charIndex, (LPARAM)0L);
 706
 707     return (long)(charIndex + lineLength);
 708 }
 709
 710 // If the return values from and to are the same, there is no
 711 // selection.
 712 void wxTextCtrl::GetSelection(long* from, long* to) const
 713 {
 714 #if wxUSE_RICHEDIT
 715     if ( IsRich() )
 716     {
 717         CHARRANGE charRange;
 718         ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &charRange);
 719
 720         *from = charRange.cpMin;
 721         *to = charRange.cpMax;
 722     }
 723     else
 724 #endif // !wxUSE_RICHEDIT
 725     {
 726         DWORD dwStart, dwEnd;
 727         ::SendMessage(GetHwnd(), EM_GETSEL, (WPARAM)&dwStart, (LPARAM)&dwEnd);
 728
 729         *from = dwStart;
 730         *to = dwEnd;
 731     }
 732 }
 733
 734 wxString wxTextCtrl::GetStringSelection() const
 735 {
 736     // the base class version works correctly for the rich text controls
 737     // because there the lines are terminated with just '\r' which means that
 738     // the string length is not changed in the result of the translations doen
 739     // in GetValue() but for the normal ones when we replace "\r\n" with '\n'
 740     // we break the indices
 741 #if wxUSE_RICHEDIT
 742     if ( IsRich() )
 743         return wxTextCtrlBase::GetStringSelection();
 744 #endif // wxUSE_RICHEDIT
 745
 746     long from, to;
 747     GetSelection(&from, &to);
 748
 749     wxString str;
 750     if ( from < to )
 751     {
 752         str = wxGetWindowText(GetHWND()).Mid(from, to - from);
 753
 754         // and now that we have the correct selection, convert it to the
 755         // correct format
 756         str = wxTextFile::Translate(str, wxTextFileType_Unix);
 757     }
 758
 759     return str;
 760 }
 761
 762 bool wxTextCtrl::IsEditable() const
 763 {
 764     long style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
 765
 766     return ((style & ES_READONLY) == 0);
 767 }
 768
 769 // ----------------------------------------------------------------------------
 770 // selection
 771 // ----------------------------------------------------------------------------
 772
 773 void wxTextCtrl::SetSelection(long from, long to)
 774 {
 775     DoSetSelection(from, to);
 776 }
 777
 778 void wxTextCtrl::DoSetSelection(long from, long to, bool scrollCaret)
 779 {
 780     // if from and to are both -1, it means (in wxWindows) that all text should
 781     // be selected - translate into Windows convention
 782     if ( (from == -1) && (to == -1) )
 783     {
 784         from = 0;
 785         to = -1;
 786     }
 787
 788     HWND hWnd = GetHwnd();
 789
 790 #ifdef __WIN32__
 791 #if wxUSE_RICHEDIT
 792     if ( IsRich() )
 793     {
 794         CHARRANGE range;
 795         range.cpMin = from;
 796         range.cpMax = to;
 797         SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM) &range);
 798     }
 799     else
 800 #endif // wxUSE_RICHEDIT
 801     {
 802         SendMessage(hWnd, EM_SETSEL, (WPARAM)from, (LPARAM)to);
 803     }
 804
 805     if ( scrollCaret )
 806     {
 807         SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
 808     }
 809 #else // Win16
 810     // WPARAM is 0: selection is scrolled into view
 811     SendMessage(hWnd, EM_SETSEL, (WPARAM)0, (LPARAM)MAKELONG(from, to));
 812 #endif // Win32/16
 813 }
 814
 815 // ----------------------------------------------------------------------------
 816 // Editing
 817 // ----------------------------------------------------------------------------
 818
 819 void wxTextCtrl::Replace(long from, long to, const wxString& value)
 820 {
 821     // Set selection and remove it
 822     DoSetSelection(from, to, FALSE);
 823
 824     SendMessage(GetHwnd(), EM_REPLACESEL,
 825 #ifdef __WIN32__
 826                 TRUE,
 827 #else
 828                 FALSE,
 829 #endif
 830                 (LPARAM)value.c_str());
 831 }
 832
 833 void wxTextCtrl::Remove(long from, long to)
 834 {
 835     Replace(from, to, _T(""));
 836 }
 837
 838 bool wxTextCtrl::LoadFile(const wxString& file)
 839 {
 840     if ( wxTextCtrlBase::LoadFile(file) )
 841     {
 842         // update the size limit if needed
 843         AdjustSpaceLimit();
 844
 845         return TRUE;
 846     }
 847
 848     return FALSE;
 849 }
 850
 851 bool wxTextCtrl::IsModified() const
 852 {
 853     return (SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0);
 854 }
 855
 856 // Makes 'unmodified'
 857 void wxTextCtrl::DiscardEdits()
 858 {
 859     SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0L);
 860 }
 861
 862 int wxTextCtrl::GetNumberOfLines() const
 863 {
 864     return (int)SendMessage(GetHwnd(), EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0);
 865 }
 866
 867 long wxTextCtrl::XYToPosition(long x, long y) const
 868 {
 869     HWND hWnd = GetHwnd();
 870
 871     // This gets the char index for the _beginning_ of this line
 872     int charIndex = (int)SendMessage(hWnd, EM_LINEINDEX, (WPARAM)y, (LPARAM)0);
 873     return (long)(x + charIndex);
 874 }
 875
 876 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
 877 {
 878     HWND hWnd = GetHwnd();
 879
 880     // This gets the line number containing the character
 881     int lineNo;
 882 #if wxUSE_RICHEDIT
 883     if ( IsRich() )
 884     {
 885         lineNo = (int)SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, (LPARAM)pos);
 886     }
 887     else
 888 #endif // wxUSE_RICHEDIT
 889         lineNo = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, 0);
 890
 891     if ( lineNo == -1 )
 892     {
 893         // no such line
 894         return FALSE;
 895     }
 896
 897     // This gets the char index for the _beginning_ of this line
 898     int charIndex = (int)SendMessage(hWnd, EM_LINEINDEX, (WPARAM)lineNo, (LPARAM)0);
 899     if ( charIndex == -1 )
 900     {
 901         return FALSE;
 902     }
 903
 904     // The X position must therefore be the different between pos and charIndex
 905     if ( x )
 906         *x = (long)(pos - charIndex);
 907     if ( y )
 908         *y = (long)lineNo;
 909
 910     return TRUE;
 911 }
 912
 913 void wxTextCtrl::ShowPosition(long pos)
 914 {
 915     HWND hWnd = GetHwnd();
 916
 917     // To scroll to a position, we pass the number of lines and characters
 918     // to scroll *by*. This means that we need to:
 919     // (1) Find the line position of the current line.
 920     // (2) Find the line position of pos.
 921     // (3) Scroll by (pos - current).
 922     // For now, ignore the horizontal scrolling.
 923
 924     // Is this where scrolling is relative to - the line containing the caret?
 925     // Or is the first visible line??? Try first visible line.
 926 //    int currentLineLineNo1 = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)-1, (LPARAM)0L);
 927
 928     int currentLineLineNo = (int)SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, (WPARAM)0, (LPARAM)0L);
 929
 930     int specifiedLineLineNo = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, (LPARAM)0L);
 931
 932     int linesToScroll = specifiedLineLineNo - currentLineLineNo;
 933
 934     if (linesToScroll != 0)
 935       (void)SendMessage(hWnd, EM_LINESCROLL, (WPARAM)0, (LPARAM)linesToScroll);
 936 }
 937
 938 int wxTextCtrl::GetLineLength(long lineNo) const
 939 {
 940     long charIndex = XYToPosition(0, lineNo);
 941     int len = (int)SendMessage(GetHwnd(), EM_LINELENGTH, charIndex, 0);
 942     return len;
 943 }
 944
 945 wxString wxTextCtrl::GetLineText(long lineNo) const
 946 {
 947     size_t len = (size_t)GetLineLength(lineNo) + 1;
 948
 949     // there must be at least enough place for the length WORD in the
 950     // buffer
 951     len += sizeof(WORD);
 952
 953     wxString str;
 954     wxChar *buf = str.GetWriteBuf(len);
 955
 956     *(WORD *)buf = (WORD)len;
 957     len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf);
 958     buf[len] = 0;
 959
 960     str.UngetWriteBuf(len);
 961
 962     return str;
 963 }
 964
 965 void wxTextCtrl::SetMaxLength(unsigned long len)
 966 {
 967     ::SendMessage(GetHwnd(), EM_LIMITTEXT, len, 0);
 968 }
 969
 970 // ----------------------------------------------------------------------------
 971 // Undo/redo
 972 // ----------------------------------------------------------------------------
 973
 974 void wxTextCtrl::Undo()
 975 {
 976     if (CanUndo())
 977     {
 978         ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
 979     }
 980 }
 981
 982 void wxTextCtrl::Redo()
 983 {
 984     if (CanRedo())
 985     {
 986         // Same as Undo, since Undo undoes the undo, i.e. a redo.
 987         ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
 988     }
 989 }
 990
 991 bool wxTextCtrl::CanUndo() const
 992 {
 993     return (::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0);
 994 }
 995
 996 bool wxTextCtrl::CanRedo() const
 997 {
 998     return (::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0);
 999 }
1000
1001 // ----------------------------------------------------------------------------
1002 // implemenation details
1003 // ----------------------------------------------------------------------------
1004
1005 void wxTextCtrl::Command(wxCommandEvent & event)
1006 {
1007     SetValue(event.GetString());
1008     ProcessCommand (event);
1009 }
1010
1011 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
1012 {
1013     // By default, load the first file into the text window.
1014     if (event.GetNumberOfFiles() > 0)
1015     {
1016         LoadFile(event.GetFiles()[0]);
1017     }
1018 }
1019
1020 // ----------------------------------------------------------------------------
1021 // kbd input processing
1022 // ----------------------------------------------------------------------------
1023
1024 bool wxTextCtrl::MSWShouldPreProcessMessage(WXMSG* pMsg)
1025 {
1026     MSG *msg = (MSG *)pMsg;
1027
1028     // check for our special keys here: if we don't do it and the parent frame
1029     // uses them as accelerators, they wouldn't work at all, so we disable
1030     // usual preprocessing for them
1031     if ( msg->message == WM_KEYDOWN )
1032     {
1033         WORD vkey = msg->wParam;
1034         if ( (HIWORD(msg->lParam) & KF_ALTDOWN) == KF_ALTDOWN )
1035         {
1036             if ( vkey == VK_BACK )
1037                 return FALSE;
1038         }
1039         else // no Alt
1040         {
1041             if ( wxIsCtrlDown() )
1042             {
1043                 switch ( vkey )
1044                 {
1045                     case 'C':
1046                     case 'V':
1047                     case 'X':
1048                     case VK_INSERT:
1049                     case VK_DELETE:
1050                     case VK_HOME:
1051                     case VK_END:
1052                         return FALSE;
1053                 }
1054             }
1055             else if ( wxIsShiftDown() )
1056             {
1057                 if ( vkey == VK_INSERT || vkey == VK_DELETE )
1058                     return FALSE;
1059             }
1060         }
1061     }
1062
1063     return wxControl::MSWShouldPreProcessMessage(pMsg);
1064 }
1065
1066 void wxTextCtrl::OnChar(wxKeyEvent& event)
1067 {
1068     switch ( event.KeyCode() )
1069     {
1070         case WXK_RETURN:
1071             if ( !(m_windowStyle & wxTE_MULTILINE) )
1072             {
1073                 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1074                 InitCommandEvent(event);
1075                 event.SetString(GetValue());
1076                 if ( GetEventHandler()->ProcessEvent(event) )
1077                     return;
1078             }
1079             //else: multiline controls need Enter for themselves
1080
1081             break;
1082
1083         case WXK_TAB:
1084             // always produce navigation event - even if we process TAB
1085             // ourselves the fact that we got here means that the user code
1086             // decided to skip processing of this TAB - probably to let it
1087             // do its default job.
1088             {
1089                 wxNavigationKeyEvent eventNav;
1090                 eventNav.SetDirection(!event.ShiftDown());
1091                 eventNav.SetWindowChange(event.ControlDown());
1092                 eventNav.SetEventObject(this);
1093
1094                 if ( GetParent()->GetEventHandler()->ProcessEvent(eventNav) )
1095                     return;
1096             }
1097             break;
1098     }
1099
1100     // no, we didn't process it
1101     event.Skip();
1102 }
1103
1104 bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
1105 {
1106     switch (param)
1107     {
1108         case EN_SETFOCUS:
1109         case EN_KILLFOCUS:
1110             {
1111                 wxFocusEvent event(param == EN_KILLFOCUS ? wxEVT_KILL_FOCUS
1112                                                          : wxEVT_SET_FOCUS,
1113                                    m_windowId);
1114                 event.SetEventObject( this );
1115                 GetEventHandler()->ProcessEvent(event);
1116             }
1117             break;
1118
1119         case EN_CHANGE:
1120             {
1121                 wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, m_windowId);
1122                 InitCommandEvent(event);
1123                 event.SetString(GetValue());
1124                 ProcessCommand(event);
1125             }
1126             break;
1127
1128         case EN_MAXTEXT:
1129             // the text size limit has been hit - increase it
1130             if ( !AdjustSpaceLimit() )
1131             {
1132                 wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, m_windowId);
1133                 InitCommandEvent(event);
1134                 event.SetString(GetValue());
1135                 ProcessCommand(event);
1136             }
1137             break;
1138
1139             // the other notification messages are not processed
1140         case EN_UPDATE:
1141         case EN_ERRSPACE:
1142         case EN_HSCROLL:
1143         case EN_VSCROLL:
1144             return FALSE;
1145         default:
1146             return FALSE;
1147     }
1148
1149     // processed
1150     return TRUE;
1151 }
1152
1153 WXHBRUSH wxTextCtrl::OnCtlColor(WXHDC pDC, WXHWND WXUNUSED(pWnd), WXUINT WXUNUSED(nCtlColor),
1154 #if wxUSE_CTL3D
1155                                WXUINT message,
1156                                WXWPARAM wParam,
1157                                WXLPARAM lParam
1158 #else
1159                                WXUINT WXUNUSED(message),
1160                                WXWPARAM WXUNUSED(wParam),
1161                                WXLPARAM WXUNUSED(lParam)
1162 #endif
1163     )
1164 {
1165 #if wxUSE_CTL3D
1166     if ( m_useCtl3D )
1167     {
1168         HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
1169         return (WXHBRUSH) hbrush;
1170     }
1171 #endif // wxUSE_CTL3D
1172
1173     HDC hdc = (HDC)pDC;
1174     if (GetParent()->GetTransparentBackground())
1175         SetBkMode(hdc, TRANSPARENT);
1176     else
1177         SetBkMode(hdc, OPAQUE);
1178
1179     wxColour colBack = GetBackgroundColour();
1180
1181     if (!IsEnabled() && (GetWindowStyle() & wxTE_MULTILINE) == 0)
1182         colBack = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE);
1183
1184     ::SetBkColor(hdc, wxColourToRGB(colBack));
1185     ::SetTextColor(hdc, wxColourToRGB(GetForegroundColour()));
1186
1187     wxBrush *brush = wxTheBrushList->FindOrCreateBrush(colBack, wxSOLID);
1188
1189     return (WXHBRUSH)brush->GetResourceHandle();
1190 }
1191
1192 // In WIN16, need to override normal erasing because
1193 // Ctl3D doesn't use the wxWindows background colour.
1194 #ifdef __WIN16__
1195 void wxTextCtrl::OnEraseBackground(wxEraseEvent& event)
1196 {
1197     wxColour col(m_backgroundColour);
1198
1199 #if wxUSE_CTL3D
1200     if (m_useCtl3D)
1201         col = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOW);
1202 #endif
1203
1204     RECT rect;
1205     ::GetClientRect(GetHwnd(), &rect);
1206
1207     COLORREF ref = PALETTERGB(col.Red(),
1208                               col.Green(),
1209                               col.Blue());
1210     HBRUSH hBrush = ::CreateSolidBrush(ref);
1211     if ( !hBrush )
1212         wxLogLastError(wxT("CreateSolidBrush"));
1213
1214     HDC hdc = (HDC)event.GetDC()->GetHDC();
1215
1216     int mode = ::SetMapMode(hdc, MM_TEXT);
1217
1218     ::FillRect(hdc, &rect, hBrush);
1219     ::DeleteObject(hBrush);
1220     ::SetMapMode(hdc, mode);
1221
1222 }
1223 #endif // Win16
1224
1225 bool wxTextCtrl::AdjustSpaceLimit()
1226 {
1227 #ifndef __WIN16__
1228     unsigned int limit = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
1229
1230     // HACK: we try to automatically extend the limit for the amount of text
1231     //       to allow (interactively) entering more than 64Kb of text under
1232     //       Win9x but we shouldn't reset the text limit which was previously
1233     //       set explicitly with SetMaxLength()
1234     //
1235     //       we could solve this by storing the limit we set in wxTextCtrl but
1236     //       to save space we prefer to simply test here the actual limit
1237     //       value: we consider that SetMaxLength() can only be called for
1238     //       values < 32Kb
1239     if ( limit < 0x8000 )
1240     {
1241         // we've got more text than limit set by SetMaxLength()
1242         return FALSE;
1243     }
1244
1245     unsigned int len = ::GetWindowTextLength(GetHwnd());
1246     if ( len >= limit )
1247     {
1248         limit = len + 0x8000;    // 32Kb
1249
1250 #if wxUSE_RICHEDIT
1251         if ( IsRich() )
1252         {
1253             // as a nice side effect, this also allows passing limit > 64Kb
1254             ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, limit);
1255         }
1256         else
1257 #endif // wxUSE_RICHEDIT
1258         {
1259             if ( limit > 0xffff )
1260             {
1261                 // this will set it to a platform-dependent maximum (much more
1262                 // than 64Kb under NT)
1263                 limit = 0;
1264             }
1265
1266             ::SendMessage(GetHwnd(), EM_LIMITTEXT, limit, 0);
1267         }
1268     }
1269 #endif // !Win16
1270
1271     // we changed the limit
1272     return TRUE;
1273 }
1274
1275 bool wxTextCtrl::AcceptsFocus() const
1276 {
1277     // we don't want focus if we can't be edited
1278     return IsEditable() && wxControl::AcceptsFocus();
1279 }
1280
1281 wxSize wxTextCtrl::DoGetBestSize() const
1282 {
1283     int cx, cy;
1284     wxGetCharSize(GetHWND(), &cx, &cy, &GetFont());
1285
1286     int wText = DEFAULT_ITEM_WIDTH;
1287
1288     int hText = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy);
1289     if ( m_windowStyle & wxTE_MULTILINE )
1290     {
1291         hText *= wxMax(GetNumberOfLines(), 5);
1292     }
1293     //else: for single line control everything is ok
1294
1295     return wxSize(wText, hText);
1296 }
1297
1298 // ----------------------------------------------------------------------------
1299 // standard handlers for standard edit menu events
1300 // ----------------------------------------------------------------------------
1301
1302 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1303 {
1304     Cut();
1305 }
1306
1307 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1308 {
1309     Copy();
1310 }
1311
1312 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1313 {
1314     Paste();
1315 }
1316
1317 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1318 {
1319     Undo();
1320 }
1321
1322 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1323 {
1324     Redo();
1325 }
1326
1327 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1328 {
1329     event.Enable( CanCut() );
1330 }
1331
1332 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1333 {
1334     event.Enable( CanCopy() );
1335 }
1336
1337 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1338 {
1339     event.Enable( CanPaste() );
1340 }
1341
1342 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1343 {
1344     event.Enable( CanUndo() );
1345 }
1346
1347 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1348 {
1349     event.Enable( CanRedo() );
1350 }
1351
1352 // the rest of the file only deals with the rich edit controls
1353 #if wxUSE_RICHEDIT
1354
1355 // ----------------------------------------------------------------------------
1356 // EN_LINK processing
1357 // ----------------------------------------------------------------------------
1358
1359 bool wxTextCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
1360 {
1361     NMHDR *hdr = (NMHDR* )lParam;
1362     if ( hdr->code == EN_LINK )
1363     {
1364         ENLINK *enlink = (ENLINK *)hdr;
1365
1366         switch ( enlink->msg )
1367         {
1368             case WM_SETCURSOR:
1369                 // ok, so it is hardcoded - do we really nee to customize it?
1370                 ::SetCursor(GetHcursorOf(wxCursor(wxCURSOR_HAND)));
1371                 *result = TRUE;
1372                 break;
1373
1374             case WM_MOUSEMOVE:
1375             case WM_LBUTTONDOWN:
1376             case WM_LBUTTONUP:
1377             case WM_LBUTTONDBLCLK:
1378             case WM_RBUTTONDOWN:
1379             case WM_RBUTTONUP:
1380             case WM_RBUTTONDBLCLK:
1381                 // send a mouse event
1382                 {
1383                     static const wxEventType eventsMouse[] =
1384                     {
1385                         wxEVT_MOTION,
1386                         wxEVT_LEFT_DOWN,
1387                         wxEVT_LEFT_UP,
1388                         wxEVT_LEFT_DCLICK,
1389                         wxEVT_RIGHT_DOWN,
1390                         wxEVT_RIGHT_UP,
1391                         wxEVT_RIGHT_DCLICK,
1392                     };
1393
1394                     // the event ids are consecutive
1395                     wxMouseEvent
1396                         evtMouse(eventsMouse[enlink->msg - WM_MOUSEMOVE]);
1397
1398                     InitMouseEvent(evtMouse,
1399                                    GET_X_LPARAM(enlink->lParam),
1400                                    GET_Y_LPARAM(enlink->lParam),
1401                                    enlink->wParam);
1402
1403                     wxTextUrlEvent event(m_windowId, evtMouse,
1404                                          enlink->chrg.cpMin,
1405                                          enlink->chrg.cpMax);
1406
1407                     InitCommandEvent(event);
1408
1409                     *result = ProcessCommand(event);
1410                 }
1411                 break;
1412         }
1413
1414         return TRUE;
1415     }
1416
1417     // not processed
1418     return FALSE;
1419 }
1420
1421 // ----------------------------------------------------------------------------
1422 // colour setting for the rich edit controls
1423 // ----------------------------------------------------------------------------
1424
1425 // Watcom C++ doesn't define this
1426 #ifndef SCF_ALL
1427 #define SCF_ALL 0x0004
1428 #endif
1429
1430 bool wxTextCtrl::SetBackgroundColour(const wxColour& colour)
1431 {
1432     if ( !wxTextCtrlBase::SetBackgroundColour(colour) )
1433     {
1434         // colour didn't really change
1435         return FALSE;
1436     }
1437
1438     if ( IsRich() )
1439     {
1440         // rich edit doesn't use WM_CTLCOLOR, hence we need to send
1441         // EM_SETBKGNDCOLOR additionally
1442         ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour));
1443     }
1444
1445     return TRUE;
1446 }
1447
1448 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1449 {
1450     if ( !wxTextCtrlBase::SetForegroundColour(colour) )
1451     {
1452         // colour didn't really change
1453         return FALSE;
1454     }
1455
1456     if ( IsRich() )
1457     {
1458         // change the colour of everything
1459         CHARFORMAT cf;
1460         wxZeroMemory(cf);
1461         cf.cbSize = sizeof(cf);
1462         cf.dwMask = CFM_COLOR;
1463         cf.crTextColor = wxColourToRGB(colour);
1464         ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf);
1465     }
1466
1467     return TRUE;
1468 }
1469
1470 // ----------------------------------------------------------------------------
1471 // styling support for rich edit controls
1472 // ----------------------------------------------------------------------------
1473
1474 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
1475 {
1476     if ( !IsRich() )
1477     {
1478         // can't do it with normal text control
1479         return FALSE;
1480     }
1481
1482     // the rich text control doesn't handle setting background colour, so don't
1483     // even try if it's the only thing we want to change
1484     if ( wxRichEditModule::GetLoadedVersion() < 2 &&
1485          !style.HasFont() && !style.HasTextColour() )
1486     {
1487         // nothing to do: return TRUE if there was really nothing to do and
1488         // FALSE if we failed to set bg colour
1489         return !style.HasBackgroundColour();
1490     }
1491
1492     // order the range if needed
1493     if ( start > end )
1494     {
1495         long tmp = start;
1496         start = end;
1497         end = tmp;
1498     }
1499
1500     // we can only change the format of the selection, so select the range we
1501     // want and restore the old selection later
1502     long startOld, endOld;
1503     GetSelection(&startOld, &endOld);
1504
1505     // but do we really have to change the selection?
1506     bool changeSel = start != startOld || end != endOld;
1507
1508     if ( changeSel )
1509     {
1510         DoSetSelection(start, end, FALSE);
1511     }
1512
1513     // initialize CHARFORMAT struct
1514 #if wxUSE_RICHEDIT2
1515     CHARFORMAT2 cf;
1516 #else
1517     CHARFORMAT cf;
1518 #endif
1519     wxZeroMemory(cf);
1520     cf.cbSize = sizeof(cf);
1521
1522     if ( style.HasFont() )
1523     {
1524         // VZ: CFM_CHARSET doesn't seem to do anything at all in RichEdit 2.0
1525         //     but using it doesn't seem to hurt neither so leaving it for now
1526
1527         cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET |
1528                      CFM_ITALIC | CFM_BOLD | CFM_UNDERLINE;
1529
1530         // fill in data from LOGFONT but recalculate lfHeight because we need
1531         // the real height in twips and not the negative number which
1532         // wxFillLogFont() returns (this is correct in general and works with
1533         // the Windows font mapper, but not here)
1534         LOGFONT lf;
1535         wxFillLogFont(&lf, &style.GetFont());
1536         cf.yHeight = 20*style.GetFont().GetPointSize(); // 1 pt = 20 twips
1537         cf.bCharSet = lf.lfCharSet;
1538         cf.bPitchAndFamily = lf.lfPitchAndFamily;
1539         wxStrncpy( cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName) );
1540
1541         // also deal with underline/italic/bold attributes: note that we must
1542         // always set CFM_ITALIC &c bits in dwMask, even if we don't set the
1543         // style to allow clearing it
1544         if ( lf.lfItalic )
1545         {
1546             cf.dwEffects |= CFE_ITALIC;
1547         }
1548
1549         if ( lf.lfWeight == FW_BOLD )
1550         {
1551             cf.dwEffects |= CFE_BOLD;
1552         }
1553
1554         if ( lf.lfUnderline )
1555         {
1556             cf.dwEffects |= CFE_UNDERLINE;
1557         }
1558
1559         // strikeout fonts are not supported by wxWindows
1560     }
1561
1562     if ( style.HasTextColour() )
1563     {
1564         cf.dwMask |= CFM_COLOR;
1565         cf.crTextColor = wxColourToRGB(style.GetTextColour());
1566     }
1567
1568 #if wxUSE_RICHEDIT2
1569     if ( wxRichEditModule::GetLoadedVersion() > 1 && style.HasBackgroundColour() )
1570     {
1571         cf.dwMask |= CFM_BACKCOLOR;
1572         cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
1573     }
1574 #endif // wxUSE_RICHEDIT2
1575
1576     // do format the selection
1577     bool ok = ::SendMessage(GetHwnd(), EM_SETCHARFORMAT,
1578                             SCF_SELECTION, (LPARAM)&cf) != 0;
1579     if ( !ok )
1580     {
1581         wxLogDebug(_T("SendMessage(EM_SETCHARFORMAT, SCF_SELECTION) failed"));
1582     }
1583
1584     if ( changeSel )
1585     {
1586         // restore the original selection
1587         DoSetSelection(startOld, endOld, FALSE);
1588     }
1589
1590     return ok;
1591 }
1592
1593 // ----------------------------------------------------------------------------
1594 // wxRichEditModule
1595 // ----------------------------------------------------------------------------
1596
1597 bool wxRichEditModule::OnInit()
1598 {
1599     // don't do anything - we will load it when needed
1600     return TRUE;
1601 }
1602
1603 void wxRichEditModule::OnExit()
1604 {
1605     if ( ms_hRichEdit )
1606     {
1607         FreeLibrary(ms_hRichEdit);
1608     }
1609 }
1610
1611 /* static */
1612 bool wxRichEditModule::Load(int version)
1613 {
1614     wxCHECK_MSG( version >= 1 && version <= 3, FALSE,
1615                  _T("incorrect richedit control version requested") );
1616
1617     if ( version <= ms_verRichEdit )
1618     {
1619         // we've already got this or better
1620         return TRUE;
1621     }
1622
1623     if ( ms_hRichEdit )
1624     {
1625         ::FreeLibrary(ms_hRichEdit);
1626     }
1627
1628     // always try load riched20.dll first - like this we won't have to reload
1629     // it later if we're first asked for RE 1 and then for RE 2 or 3
1630     wxString dllname = _T("riched20.dll");
1631     ms_hRichEdit = ::LoadLibrary(dllname);
1632     ms_verRichEdit = 2; // no way to tell if it's 2 or 3, assume 2
1633
1634     if ( !ms_hRichEdit && (version == 1) )
1635     {
1636         // fall back to RE 1
1637         dllname = _T("riched32.dll");
1638         ms_hRichEdit = ::LoadLibrary(dllname);
1639         ms_verRichEdit = 1;
1640     }
1641
1642     if ( !ms_hRichEdit )
1643     {
1644         wxLogSysError(_("Could not load Rich Edit DLL '%s'"), dllname.c_str());
1645
1646         ms_verRichEdit = -1;
1647
1648         return FALSE;
1649     }
1650
1651     return TRUE;
1652 }
1653
1654 #endif // wxUSE_RICHEDIT
1655
1656 #endif // wxUSE_TEXTCTRL