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