src/msw/textctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/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
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #if wxUSE_TEXTCTRL && !(defined(__SMARTPHONE__) && defined(__WXWINCE__))
  28
  29 #ifndef WX_PRECOMP
  30     #include "wx/textctrl.h"
  31     #include "wx/settings.h"
  32     #include "wx/brush.h"
  33     #include "wx/utils.h"
  34     #include "wx/intl.h"
  35     #include "wx/log.h"
  36     #include "wx/app.h"
  37     #include "wx/menu.h"
  38     #include "wx/math.h"
  39     #include "wx/module.h"
  40     #include "wx/wxcrtvararg.h"
  41 #endif
  42
  43 #include "wx/sysopt.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 #include "wx/msw/winundef.h"
  55 #include "wx/msw/mslu.h"
  56
  57 #include <string.h>
  58 #include <stdlib.h>
  59
  60 #ifndef __WXWINCE__
  61 #include <sys/types.h>
  62 #endif
  63
  64 #if wxUSE_RICHEDIT
  65
  66 #if wxUSE_INKEDIT
  67 #include "wx/dynlib.h"
  68 #endif
  69
  70 // old mingw32 has richedit stuff directly in windows.h and doesn't have
  71 // richedit.h at all
  72 #if !defined(__GNUWIN32_OLD__) || defined(__CYGWIN10__)
  73     #include <richedit.h>
  74 #endif
  75
  76 #endif // wxUSE_RICHEDIT
  77
  78 #include "wx/msw/missing.h"
  79
  80 #if wxUSE_DRAG_AND_DROP && wxUSE_RICHEDIT
  81
  82 // dummy value used for m_dropTarget, different from any valid pointer value
  83 // (which are all even under Windows) and NULL
  84 static wxDropTarget *
  85     wxRICHTEXT_DEFAULT_DROPTARGET = wx_reinterpret_cast(wxDropTarget *, 1);
  86
  87 #endif // wxUSE_DRAG_AND_DROP && wxUSE_RICHEDIT
  88
  89 // ----------------------------------------------------------------------------
  90 // private classes
  91 // ----------------------------------------------------------------------------
  92
  93 #if wxUSE_RICHEDIT
  94
  95 // this module initializes RichEdit DLL(s) if needed
  96 class wxRichEditModule : public wxModule
  97 {
  98 public:
  99     enum Version
 100     {
 101         Version_1,          // riched32.dll
 102         Version_2or3,       // both use riched20.dll
 103         Version_41,         // msftedit.dll (XP SP1 and Windows 2003)
 104         Version_Max
 105     };
 106
 107     virtual bool OnInit();
 108     virtual void OnExit();
 109
 110     // load the richedit DLL for the specified version of rich edit
 111     static bool Load(Version version);
 112
 113 #if wxUSE_INKEDIT
 114     // load the InkEdit library
 115     static bool LoadInkEdit();
 116 #endif
 117
 118 private:
 119     // the handles to richedit 1.0 and 2.0 (or 3.0) DLLs
 120     static HINSTANCE ms_hRichEdit[Version_Max];
 121
 122 #if wxUSE_INKEDIT
 123     static wxDynamicLibrary ms_inkEditLib;
 124     static bool             ms_inkEditLibLoadAttemped;
 125 #endif
 126
 127     DECLARE_DYNAMIC_CLASS(wxRichEditModule)
 128 };
 129
 130 HINSTANCE wxRichEditModule::ms_hRichEdit[Version_Max] = { NULL, NULL, NULL };
 131
 132 #if wxUSE_INKEDIT
 133 wxDynamicLibrary wxRichEditModule::ms_inkEditLib;
 134 bool             wxRichEditModule::ms_inkEditLibLoadAttemped = false;
 135 #endif
 136
 137 IMPLEMENT_DYNAMIC_CLASS(wxRichEditModule, wxModule)
 138
 139 #endif // wxUSE_RICHEDIT
 140
 141 // a small class used to set m_updatesCount to 0 (to filter duplicate events if
 142 // necessary) and to reset it back to -1 afterwards
 143 class UpdatesCountFilter
 144 {
 145 public:
 146     UpdatesCountFilter(int& count)
 147         : m_count(count)
 148     {
 149         wxASSERT_MSG( m_count == -1 || m_count == -2,
 150                       _T("wrong initial m_updatesCount value") );
 151
 152         if (m_count != -2)
 153             m_count = 0;
 154         //else: we don't want to count how many update events we get as we're going
 155         //      to ignore all of them
 156     }
 157
 158     ~UpdatesCountFilter()
 159     {
 160         m_count = -1;
 161     }
 162
 163     // return true if an event has been received
 164     bool GotUpdate() const
 165     {
 166         return m_count == 1;
 167     }
 168
 169 private:
 170     int& m_count;
 171
 172     DECLARE_NO_COPY_CLASS(UpdatesCountFilter)
 173 };
 174
 175 // ----------------------------------------------------------------------------
 176 // event tables and other macros
 177 // ----------------------------------------------------------------------------
 178
 179 #if wxUSE_EXTENDED_RTTI
 180 WX_DEFINE_FLAGS( wxTextCtrlStyle )
 181
 182 wxBEGIN_FLAGS( wxTextCtrlStyle )
 183     // new style border flags, we put them first to
 184     // use them for streaming out
 185     wxFLAGS_MEMBER(wxBORDER_SIMPLE)
 186     wxFLAGS_MEMBER(wxBORDER_SUNKEN)
 187     wxFLAGS_MEMBER(wxBORDER_DOUBLE)
 188     wxFLAGS_MEMBER(wxBORDER_RAISED)
 189     wxFLAGS_MEMBER(wxBORDER_STATIC)
 190     wxFLAGS_MEMBER(wxBORDER_NONE)
 191
 192     // old style border flags
 193     wxFLAGS_MEMBER(wxSIMPLE_BORDER)
 194     wxFLAGS_MEMBER(wxSUNKEN_BORDER)
 195     wxFLAGS_MEMBER(wxDOUBLE_BORDER)
 196     wxFLAGS_MEMBER(wxRAISED_BORDER)
 197     wxFLAGS_MEMBER(wxSTATIC_BORDER)
 198     wxFLAGS_MEMBER(wxBORDER)
 199
 200     // standard window styles
 201     wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
 202     wxFLAGS_MEMBER(wxCLIP_CHILDREN)
 203     wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
 204     wxFLAGS_MEMBER(wxWANTS_CHARS)
 205     wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
 206     wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
 207     wxFLAGS_MEMBER(wxVSCROLL)
 208     wxFLAGS_MEMBER(wxHSCROLL)
 209
 210     wxFLAGS_MEMBER(wxTE_PROCESS_ENTER)
 211     wxFLAGS_MEMBER(wxTE_PROCESS_TAB)
 212     wxFLAGS_MEMBER(wxTE_MULTILINE)
 213     wxFLAGS_MEMBER(wxTE_PASSWORD)
 214     wxFLAGS_MEMBER(wxTE_READONLY)
 215     wxFLAGS_MEMBER(wxHSCROLL)
 216     wxFLAGS_MEMBER(wxTE_RICH)
 217     wxFLAGS_MEMBER(wxTE_RICH2)
 218     wxFLAGS_MEMBER(wxTE_AUTO_URL)
 219     wxFLAGS_MEMBER(wxTE_NOHIDESEL)
 220     wxFLAGS_MEMBER(wxTE_LEFT)
 221     wxFLAGS_MEMBER(wxTE_CENTRE)
 222     wxFLAGS_MEMBER(wxTE_RIGHT)
 223     wxFLAGS_MEMBER(wxTE_DONTWRAP)
 224     wxFLAGS_MEMBER(wxTE_CHARWRAP)
 225     wxFLAGS_MEMBER(wxTE_WORDWRAP)
 226
 227 wxEND_FLAGS( wxTextCtrlStyle )
 228
 229 IMPLEMENT_DYNAMIC_CLASS_XTI(wxTextCtrl, wxControl,"wx/textctrl.h")
 230
 231 wxBEGIN_PROPERTIES_TABLE(wxTextCtrl)
 232     wxEVENT_PROPERTY( TextUpdated , wxEVT_COMMAND_TEXT_UPDATED , wxCommandEvent )
 233     wxEVENT_PROPERTY( TextEnter , wxEVT_COMMAND_TEXT_ENTER , wxCommandEvent )
 234
 235     wxPROPERTY( Font , wxFont , SetFont , GetFont  , EMPTY_MACROVALUE, 0 /*flags*/ , wxT("Helpstring") , wxT("group") )
 236     wxPROPERTY( Value , wxString , SetValue, GetValue, wxString() , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
 237     wxPROPERTY_FLAGS( WindowStyle , wxTextCtrlStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
 238 wxEND_PROPERTIES_TABLE()
 239
 240 wxBEGIN_HANDLERS_TABLE(wxTextCtrl)
 241 wxEND_HANDLERS_TABLE()
 242
 243 wxCONSTRUCTOR_6( wxTextCtrl , wxWindow* , Parent , wxWindowID , Id , wxString , Value , wxPoint , Position , wxSize , Size , long , WindowStyle)
 244 #else
 245 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxTextCtrlBase)
 246 #endif
 247
 248
 249 BEGIN_EVENT_TABLE(wxTextCtrl, wxTextCtrlBase)
 250     EVT_CHAR(wxTextCtrl::OnChar)
 251     EVT_DROP_FILES(wxTextCtrl::OnDropFiles)
 252
 253 #if wxUSE_RICHEDIT
 254     EVT_CONTEXT_MENU(wxTextCtrl::OnContextMenu)
 255 #endif
 256
 257     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 258     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 259     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 260     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 261     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 262     EVT_MENU(wxID_CLEAR, wxTextCtrl::OnDelete)
 263     EVT_MENU(wxID_SELECTALL, wxTextCtrl::OnSelectAll)
 264
 265     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 266     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 267     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 268     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 269     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 270     EVT_UPDATE_UI(wxID_CLEAR, wxTextCtrl::OnUpdateDelete)
 271     EVT_UPDATE_UI(wxID_SELECTALL, wxTextCtrl::OnUpdateSelectAll)
 272
 273     EVT_SET_FOCUS(wxTextCtrl::OnSetFocus)
 274 END_EVENT_TABLE()
 275
 276 // ============================================================================
 277 // implementation
 278 // ============================================================================
 279
 280 // ----------------------------------------------------------------------------
 281 // creation
 282 // ----------------------------------------------------------------------------
 283
 284 void wxTextCtrl::Init()
 285 {
 286 #if wxUSE_RICHEDIT
 287     m_verRichEdit = 0;
 288 #endif // wxUSE_RICHEDIT
 289
 290 #if wxUSE_INKEDIT && wxUSE_RICHEDIT
 291     m_isInkEdit = 0;
 292 #endif
 293
 294     m_privateContextMenu = NULL;
 295     m_updatesCount = -1;
 296     m_isNativeCaretShown = true;
 297 }
 298
 299 wxTextCtrl::~wxTextCtrl()
 300 {
 301 #if wxUSE_DRAG_AND_DROP && wxUSE_RICHEDIT
 302     if ( m_dropTarget == wxRICHTEXT_DEFAULT_DROPTARGET )
 303     {
 304         // don't try to destroy this dummy pointer in the base class dtor
 305         m_dropTarget = NULL;
 306     }
 307 #endif // wxUSE_DRAG_AND_DROP && wxUSE_RICHEDIT
 308
 309     delete m_privateContextMenu;
 310 }
 311
 312 bool wxTextCtrl::Create(wxWindow *parent,
 313                         wxWindowID id,
 314                         const wxString& value,
 315                         const wxPoint& pos,
 316                         const wxSize& size,
 317                         long style,
 318                         const wxValidator& validator,
 319                         const wxString& name)
 320 {
 321     // base initialization
 322     if ( !CreateControl(parent, id, pos, size, style, validator, name) )
 323         return false;
 324
 325     if ( !MSWCreateText(value, pos, size) )
 326         return false;
 327
 328 #if wxUSE_DRAG_AND_DROP && wxUSE_RICHEDIT
 329     if ( IsRich() )
 330     {
 331         // rich text controls have a default associated drop target which
 332         // allows them to receive (rich) text dropped on them, which is nice,
 333         // but prevents us from associating a user-defined drop target with
 334         // them as we need to unregister the old one first
 335         //
 336         // to make it work, we set m_dropTarget to this special value initially
 337         // and check for it in our SetDropTarget()
 338         m_dropTarget = wxRICHTEXT_DEFAULT_DROPTARGET;
 339     }
 340 #endif // wxUSE_DRAG_AND_DROP && wxUSE_RICHEDIT
 341
 342     return true;
 343 }
 344
 345 // returns true if the platform should explicitly apply a theme border
 346 bool wxTextCtrl::CanApplyThemeBorder() const
 347 {
 348 #ifdef __WXWINCE__
 349     return false;
 350 #else
 351     // Standard text control already handles theming
 352     return ((GetWindowStyle() & (wxTE_RICH|wxTE_RICH2)) != 0);
 353 #endif
 354 }
 355
 356 bool wxTextCtrl::MSWCreateText(const wxString& value,
 357                                const wxPoint& pos,
 358                                const wxSize& size)
 359 {
 360     // translate wxWin style flags to MSW ones
 361     WXDWORD msStyle = MSWGetCreateWindowFlags();
 362
 363     // do create the control - either an EDIT or RICHEDIT
 364     wxString windowClass = wxT("EDIT");
 365
 366 #if defined(__POCKETPC__) || defined(__SMARTPHONE__)
 367     // A control that capitalizes the first letter
 368     if ( HasFlag(wxTE_CAPITALIZE) )
 369         windowClass = wxT("CAPEDIT");
 370 #endif
 371
 372 #if wxUSE_RICHEDIT
 373     if ( m_windowStyle & wxTE_AUTO_URL )
 374     {
 375         // automatic URL detection only works in RichEdit 2.0+
 376         m_windowStyle |= wxTE_RICH2;
 377     }
 378
 379     if ( m_windowStyle & wxTE_RICH2 )
 380     {
 381         // using richedit 2.0 implies using wxTE_RICH
 382         m_windowStyle |= wxTE_RICH;
 383     }
 384
 385     // we need to load the richedit DLL before creating the rich edit control
 386     if ( m_windowStyle & wxTE_RICH )
 387     {
 388         // versions 2.0, 3.0 and 4.1 of rich edit are mostly compatible with
 389         // each other but not with version 1.0, so we have separate flags for
 390         // the version 1.0 and the others (and so m_verRichEdit may be 0 (plain
 391         // EDIT control), 1 for version 1.0 or 2 for any higher version)
 392         //
 393         // notice that 1.0 has no Unicode support at all so in Unicode build we
 394         // must use another version
 395
 396 #if wxUSE_UNICODE
 397         m_verRichEdit = 2;
 398 #else // !wxUSE_UNICODE
 399         m_verRichEdit = m_windowStyle & wxTE_RICH2 ? 2 : 1;
 400 #endif // wxUSE_UNICODE/!wxUSE_UNICODE
 401
 402 #if wxUSE_INKEDIT
 403         // First test if we can load an ink edit control. Normally, all edit
 404         // controls will be made ink edit controls if a tablet environment is
 405         // found (or if msw.inkedit != 0 and the InkEd.dll is present).
 406         // However, an application can veto ink edit controls by either specifying
 407         // msw.inkedit = 0 or by removing wxTE_RICH[2] from the style.
 408         //
 409         if ((wxSystemSettings::HasFeature(wxSYS_TABLET_PRESENT) || wxSystemOptions::GetOptionInt(wxT("msw.inkedit")) != 0) &&
 410             !(wxSystemOptions::HasOption(wxT("msw.inkedit")) && wxSystemOptions::GetOptionInt(wxT("msw.inkedit")) == 0))
 411         {
 412             if (wxRichEditModule::LoadInkEdit())
 413             {
 414                 windowClass = INKEDIT_CLASS;
 415
 416 #if wxUSE_INKEDIT && wxUSE_RICHEDIT
 417                 m_isInkEdit = 1;
 418 #endif
 419
 420                 // Fake rich text version for other calls
 421                 m_verRichEdit = 2;
 422             }
 423         }
 424 #endif
 425
 426         if (!IsInkEdit())
 427         {
 428             if ( m_verRichEdit == 2 )
 429             {
 430                 if ( wxRichEditModule::Load(wxRichEditModule::Version_41) )
 431                 {
 432                     // yes, class name for version 4.1 really is 5.0
 433                     windowClass = _T("RICHEDIT50W");
 434                 }
 435                 else if ( wxRichEditModule::Load(wxRichEditModule::Version_2or3) )
 436                 {
 437                     windowClass = _T("RichEdit20")
 438 #if wxUSE_UNICODE
 439                                 _T("W");
 440 #else // ANSI
 441                                 _T("A");
 442 #endif // Unicode/ANSI
 443                 }
 444                 else // failed to load msftedit.dll and riched20.dll
 445                 {
 446                     m_verRichEdit = 1;
 447                 }
 448             }
 449
 450             if ( m_verRichEdit == 1 )
 451             {
 452                 if ( wxRichEditModule::Load(wxRichEditModule::Version_1) )
 453                 {
 454                     windowClass = _T("RICHEDIT");
 455                 }
 456                 else // failed to load any richedit control DLL
 457                 {
 458                     // only give the error msg once if the DLL can't be loaded
 459                     static bool s_errorGiven = false; // MT ok as only used by GUI
 460
 461                     if ( !s_errorGiven )
 462                     {
 463                         wxLogError(_("Impossible to create a rich edit control, using simple text control instead. Please reinstall riched32.dll"));
 464
 465                         s_errorGiven = true;
 466                     }
 467
 468                     m_verRichEdit = 0;
 469                 }
 470             }
 471         } // !useInkEdit
 472     }
 473 #endif // wxUSE_RICHEDIT
 474
 475     // we need to turn '\n's into "\r\n"s for the multiline controls
 476     wxString valueWin;
 477     if ( m_windowStyle & wxTE_MULTILINE )
 478     {
 479         valueWin = wxTextFile::Translate(value, wxTextFileType_Dos);
 480     }
 481     else // single line
 482     {
 483         valueWin = value;
 484     }
 485
 486     if ( !MSWCreateControl(windowClass.wx_str(), msStyle, pos, size, valueWin) )
 487         return false;
 488
 489 #if wxUSE_RICHEDIT
 490     if (IsRich())
 491     {
 492 #if wxUSE_INKEDIT
 493         if (IsInkEdit())
 494         {
 495             // Pass IEM_InsertText (0) as wParam, in order to have the ink always
 496             // converted to text.
 497             ::SendMessage(GetHwnd(), EM_SETINKINSERTMODE, 0, 0);
 498
 499             // Make sure the mouse can be used for input
 500             ::SendMessage(GetHwnd(), EM_SETUSEMOUSEFORINPUT, 1, 0);
 501         }
 502 #endif
 503
 504         // enable the events we're interested in: we want to get EN_CHANGE as
 505         // for the normal controls
 506         LPARAM mask = ENM_CHANGE;
 507
 508         if (GetRichVersion() == 1 && !IsInkEdit())
 509         {
 510             // we also need EN_MSGFILTER for richedit 1.0 for the reasons
 511             // explained in its handler
 512            mask |= ENM_MOUSEEVENTS;
 513
 514            // we also need to force the appearance of the vertical scrollbar
 515            // initially as otherwise the control doesn't refresh correctly
 516            // after resize: but once the vertical scrollbar had been shown
 517            // (even if it's subsequently hidden) it does
 518            //
 519            // this is clearly a bug and for now it has been only noticed under
 520            // Windows XP, so if we're sure it works correctly under other
 521            // systems we could do this only for XP
 522            SetSize(-1, 1); // 1 is small enough to force vert scrollbar
 523            SetInitialSize(size);
 524         }
 525         else if ( m_windowStyle & wxTE_AUTO_URL )
 526         {
 527             mask |= ENM_LINK;
 528
 529             ::SendMessage(GetHwnd(), EM_AUTOURLDETECT, TRUE, 0);
 530         }
 531
 532         ::SendMessage(GetHwnd(), EM_SETEVENTMASK, 0, mask);
 533     }
 534 #endif // wxUSE_RICHEDIT
 535
 536 #ifndef __WXWINCE__
 537     // Without this, if we pass the size in the constructor and then don't change it,
 538     // the themed borders will be drawn incorrectly.
 539     SetWindowPos(GetHwnd(), NULL, 0, 0, 0, 0,
 540                 SWP_NOZORDER|SWP_NOMOVE|SWP_NOSIZE|SWP_NOACTIVATE|
 541                 SWP_FRAMECHANGED);
 542 #endif
 543
 544     return true;
 545 }
 546
 547 // Make sure the window style (etc.) reflects the HWND style (roughly)
 548 void wxTextCtrl::AdoptAttributesFromHWND()
 549 {
 550     wxWindow::AdoptAttributesFromHWND();
 551
 552     HWND hWnd = GetHwnd();
 553     long style = ::GetWindowLong(hWnd, GWL_STYLE);
 554
 555     // retrieve the style to see whether this is an edit or richedit ctrl
 556 #if wxUSE_RICHEDIT
 557     wxString classname = wxGetWindowClass(GetHWND());
 558
 559     if ( classname.IsSameAs(_T("EDIT"), false /* no case */) )
 560     {
 561         m_verRichEdit = 0;
 562     }
 563     else // rich edit?
 564     {
 565         wxChar c;
 566         if ( wxSscanf(classname, _T("RichEdit%d0%c"), &m_verRichEdit, &c) != 2 )
 567         {
 568             wxLogDebug(_T("Unknown edit control '%s'."), classname.c_str());
 569
 570             m_verRichEdit = 0;
 571         }
 572     }
 573 #endif // wxUSE_RICHEDIT
 574
 575     if (style & ES_MULTILINE)
 576         m_windowStyle |= wxTE_MULTILINE;
 577     if (style & ES_PASSWORD)
 578         m_windowStyle |= wxTE_PASSWORD;
 579     if (style & ES_READONLY)
 580         m_windowStyle |= wxTE_READONLY;
 581     if (style & ES_WANTRETURN)
 582         m_windowStyle |= wxTE_PROCESS_ENTER;
 583     if (style & ES_CENTER)
 584         m_windowStyle |= wxTE_CENTRE;
 585     if (style & ES_RIGHT)
 586         m_windowStyle |= wxTE_RIGHT;
 587 }
 588
 589 WXDWORD wxTextCtrl::MSWGetStyle(long style, WXDWORD *exstyle) const
 590 {
 591     long msStyle = wxControl::MSWGetStyle(style, exstyle);
 592
 593     // styles which we always add by default
 594     if ( style & wxTE_MULTILINE )
 595     {
 596         msStyle |= ES_MULTILINE | ES_WANTRETURN;
 597         if ( !(style & wxTE_NO_VSCROLL) )
 598         {
 599             // always adjust the vertical scrollbar automatically if we have it
 600             msStyle |= WS_VSCROLL | ES_AUTOVSCROLL;
 601
 602 #if wxUSE_RICHEDIT
 603             // we have to use this style for the rich edit controls because
 604             // without it the vertical scrollbar never appears at all in
 605             // richedit 3.0 because of our ECO_NOHIDESEL hack (search for it)
 606             if ( style & wxTE_RICH2 )
 607             {
 608                 msStyle |= ES_DISABLENOSCROLL;
 609             }
 610 #endif // wxUSE_RICHEDIT
 611         }
 612
 613         style |= wxTE_PROCESS_ENTER;
 614     }
 615     else // !multiline
 616     {
 617         // there is really no reason to not have this style for single line
 618         // text controls
 619         msStyle |= ES_AUTOHSCROLL;
 620     }
 621
 622     // note that wxTE_DONTWRAP is the same as wxHSCROLL so if we have a horz
 623     // scrollbar, there is no wrapping -- which makes sense
 624     if ( style & wxTE_DONTWRAP )
 625     {
 626         // automatically scroll the control horizontally as necessary
 627         //
 628         // NB: ES_AUTOHSCROLL is needed for richedit controls or they don't
 629         //     show horz scrollbar at all, even in spite of WS_HSCROLL, and as
 630         //     it doesn't seem to do any harm for plain edit controls, add it
 631         //     always
 632         msStyle |= WS_HSCROLL | ES_AUTOHSCROLL;
 633     }
 634
 635     if ( style & wxTE_READONLY )
 636         msStyle |= ES_READONLY;
 637
 638     if ( style & wxTE_PASSWORD )
 639         msStyle |= ES_PASSWORD;
 640
 641     if ( style & wxTE_NOHIDESEL )
 642         msStyle |= ES_NOHIDESEL;
 643
 644     // note that we can't do do "& wxTE_LEFT" as wxTE_LEFT == 0
 645     if ( style & wxTE_CENTRE )
 646         msStyle |= ES_CENTER;
 647     else if ( style & wxTE_RIGHT )
 648         msStyle |= ES_RIGHT;
 649     else
 650         msStyle |= ES_LEFT; // ES_LEFT is 0 as well but for consistency...
 651
 652     return msStyle;
 653 }
 654
 655 void wxTextCtrl::SetWindowStyleFlag(long style)
 656 {
 657     // changing the alignment of the control dynamically works under Win2003
 658     // (but not older Windows version: it seems to work under some versions of
 659     // XP but not other ones, and we have no way to determine it so be
 660     // conservative here) and only for plain EDIT controls (not RICH ones) and
 661     // we have to recreate the control to make it always work
 662     if ( IsRich() || wxGetWinVersion() < wxWinVersion_2003 )
 663     {
 664         const long alignMask = wxTE_LEFT | wxTE_CENTRE | wxTE_RIGHT;
 665         if ( (style & alignMask) != (GetWindowStyle() & alignMask) )
 666         {
 667             const wxString value = GetValue();
 668             const wxPoint pos = GetPosition();
 669             const wxSize size = GetSize();
 670
 671             // delete the old window
 672             HWND hwnd = GetHwnd();
 673             DissociateHandle();
 674             ::DestroyWindow(hwnd);
 675
 676             // create the new one with the updated flags
 677             m_windowStyle = style;
 678             MSWCreateText(value, pos, size);
 679
 680             // and make sure it has the same attributes as before
 681             if ( m_hasFont )
 682             {
 683                 // calling SetFont(m_font) would do nothing as the code would
 684                 // notice that the font didn't change, so force it to believe
 685                 // that it did
 686                 wxFont font = m_font;
 687                 m_font = wxNullFont;
 688                 SetFont(font);
 689             }
 690
 691             if ( m_hasFgCol )
 692             {
 693                 wxColour colFg = m_foregroundColour;
 694                 m_foregroundColour = wxNullColour;
 695                 SetForegroundColour(colFg);
 696             }
 697
 698             if ( m_hasBgCol )
 699             {
 700                 wxColour colBg = m_backgroundColour;
 701                 m_backgroundColour = wxNullColour;
 702                 SetBackgroundColour(colBg);
 703             }
 704
 705             // note that text styles are lost but this is probably not a big
 706             // problem: if you use styles, you probably don't use nor change
 707             // alignment flags anyhow
 708
 709             return;
 710         }
 711     }
 712
 713 #if wxUSE_RICHEDIT
 714     // we have to deal with some styles separately because they can't be
 715     // changed by simply calling SetWindowLong(GWL_STYLE) but can be changed
 716     // using richedit-specific EM_SETOPTIONS
 717     if ( IsRich() &&
 718             ((style & wxTE_NOHIDESEL) != (GetWindowStyle() & wxTE_NOHIDESEL)) )
 719     {
 720         bool set = (style & wxTE_NOHIDESEL) != 0;
 721
 722         ::SendMessage(GetHwnd(), EM_SETOPTIONS, set ? ECOOP_OR : ECOOP_AND,
 723                       set ? ECO_NOHIDESEL : ~ECO_NOHIDESEL);
 724     }
 725 #endif // wxUSE_RICHEDIT
 726
 727     wxControl::SetWindowStyleFlag(style);
 728 }
 729
 730 // ----------------------------------------------------------------------------
 731 // set/get the controls text
 732 // ----------------------------------------------------------------------------
 733
 734 bool wxTextCtrl::IsEmpty() const
 735 {
 736     // this is an optimization for multiline controls containing a lot of text
 737     if ( IsMultiLine() && GetNumberOfLines() != 1 )
 738         return false;
 739
 740     return wxTextCtrlBase::IsEmpty();
 741 }
 742
 743 wxString wxTextCtrl::GetValue() const
 744 {
 745     // range 0..-1 is special for GetRange() and means to retrieve all text
 746     return GetRange(0, -1);
 747 }
 748
 749 wxString wxTextCtrl::GetRange(long from, long to) const
 750 {
 751     wxString str;
 752
 753     if ( from >= to && to != -1 )
 754     {
 755         // nothing to retrieve
 756         return str;
 757     }
 758
 759 #if wxUSE_RICHEDIT
 760     if ( IsRich() )
 761     {
 762         int len = GetWindowTextLength(GetHwnd());
 763         if ( len > from )
 764         {
 765             if ( to == -1 )
 766                 to = len;
 767
 768 #if !wxUSE_UNICODE
 769             // we must use EM_STREAMOUT if we don't want to lose all characters
 770             // not representable in the current character set (EM_GETTEXTRANGE
 771             // simply replaces them with question marks...)
 772             if ( GetRichVersion() > 1 )
 773             {
 774                 // we must have some encoding, otherwise any 8bit chars in the
 775                 // control are simply *lost* (replaced by '?')
 776                 wxFontEncoding encoding = wxFONTENCODING_SYSTEM;
 777
 778                 wxFont font = m_defaultStyle.GetFont();
 779                 if ( !font.Ok() )
 780                     font = GetFont();
 781
 782                 if ( font.Ok() )
 783                 {
 784                    encoding = font.GetEncoding();
 785                 }
 786
 787 #if wxUSE_INTL
 788                 if ( encoding == wxFONTENCODING_SYSTEM )
 789                 {
 790                     encoding = wxLocale::GetSystemEncoding();
 791                 }
 792 #endif // wxUSE_INTL
 793
 794                 if ( encoding == wxFONTENCODING_SYSTEM )
 795                 {
 796                     encoding = wxFONTENCODING_ISO8859_1;
 797                 }
 798
 799                 str = StreamOut(encoding);
 800
 801                 if ( !str.empty() )
 802                 {
 803                     // we have to manually extract the required part, luckily
 804                     // this is easy in this case as EOL characters in str are
 805                     // just LFs because we remove CRs in wxRichEditStreamOut
 806                     str = str.Mid(from, to - from);
 807                 }
 808             }
 809
 810             // StreamOut() wasn't used or failed, try to do it in normal way
 811             if ( str.empty() )
 812 #endif // !wxUSE_UNICODE
 813             {
 814                 // alloc one extra WORD as needed by the control
 815                 wxStringBuffer tmp(str, ++len);
 816                 wxChar *p = tmp;
 817
 818                 TEXTRANGE textRange;
 819                 textRange.chrg.cpMin = from;
 820                 textRange.chrg.cpMax = to;
 821                 textRange.lpstrText = p;
 822
 823                 (void)::SendMessage(GetHwnd(), EM_GETTEXTRANGE,
 824                                     0, (LPARAM)&textRange);
 825
 826                 if ( m_verRichEdit > 1 )
 827                 {
 828                     // RichEdit 2.0 uses just CR ('\r') for the
 829                     // newlines which is neither Unix nor Windows
 830                     // style - convert it to something reasonable
 831                     for ( ; *p; p++ )
 832                     {
 833                         if ( *p == _T('\r') )
 834                             *p = _T('\n');
 835                     }
 836                 }
 837             }
 838
 839             if ( m_verRichEdit == 1 )
 840             {
 841                 // convert to the canonical form - see comment below
 842                 str = wxTextFile::Translate(str, wxTextFileType_Unix);
 843             }
 844         }
 845         //else: no text at all, leave the string empty
 846     }
 847     else
 848 #endif // wxUSE_RICHEDIT
 849     {
 850         // retrieve all text
 851         str = wxGetWindowText(GetHWND());
 852
 853         // need only a range?
 854         if ( from < to )
 855         {
 856             str = str.Mid(from, to - from);
 857         }
 858
 859         // WM_GETTEXT uses standard DOS CR+LF (\r\n) convention - convert to the
 860         // canonical one (same one as above) for consistency with the other kinds
 861         // of controls and, more importantly, with the other ports
 862         str = wxTextFile::Translate(str, wxTextFileType_Unix);
 863     }
 864
 865     return str;
 866 }
 867
 868 void wxTextCtrl::DoSetValue(const wxString& value, int flags)
 869 {
 870     // if the text is long enough, it's faster to just set it instead of first
 871     // comparing it with the old one (chances are that it will be different
 872     // anyhow, this comparison is there to avoid flicker for small single-line
 873     // edit controls mostly)
 874     if ( (value.length() > 0x400) || (value != GetValue()) )
 875     {
 876         DoWriteText(value, flags /* doesn't include SelectionOnly here */);
 877
 878         // mark the control as being not dirty - we changed its text, not the
 879         // user
 880         DiscardEdits();
 881
 882         // for compatibility, don't move the cursor when doing SetValue()
 883         SetInsertionPoint(0);
 884     }
 885     else // same text
 886     {
 887         // still reset the modified flag even if the value didn't really change
 888         // because now it comes from the program and not the user (and do it
 889         // before generating the event so that the event handler could get the
 890         // expected value from IsModified())
 891         DiscardEdits();
 892
 893         // still send an event for consistency
 894         if (flags & SetValue_SendEvent)
 895             SendUpdateEvent();
 896     }
 897 }
 898
 899 #if wxUSE_RICHEDIT && (!wxUSE_UNICODE || wxUSE_UNICODE_MSLU)
 900
 901 // TODO: using memcpy() would improve performance a lot for big amounts of text
 902
 903 DWORD CALLBACK
 904 wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb)
 905 {
 906     *pcb = 0;
 907
 908     const wchar_t ** const ppws = (const wchar_t **)dwCookie;
 909
 910     wchar_t *wbuf = (wchar_t *)buf;
 911     const wchar_t *wpc = *ppws;
 912     while ( cb && *wpc )
 913     {
 914         *wbuf++ = *wpc++;
 915
 916         cb -= sizeof(wchar_t);
 917         (*pcb) += sizeof(wchar_t);
 918     }
 919
 920     *ppws = wpc;
 921
 922     return 0;
 923 }
 924
 925 // helper struct used to pass parameters from wxTextCtrl to wxRichEditStreamOut
 926 struct wxStreamOutData
 927 {
 928     wchar_t *wpc;
 929     size_t len;
 930 };
 931
 932 DWORD CALLBACK
 933 wxRichEditStreamOut(DWORD_PTR dwCookie, BYTE *buf, LONG cb, LONG *pcb)
 934 {
 935     *pcb = 0;
 936
 937     wxStreamOutData *data = (wxStreamOutData *)dwCookie;
 938
 939     const wchar_t *wbuf = (const wchar_t *)buf;
 940     wchar_t *wpc = data->wpc;
 941     while ( cb )
 942     {
 943         wchar_t wch = *wbuf++;
 944
 945         // turn "\r\n" into "\n" on the fly
 946         if ( wch != L'\r' )
 947             *wpc++ = wch;
 948         else
 949             data->len--;
 950
 951         cb -= sizeof(wchar_t);
 952         (*pcb) += sizeof(wchar_t);
 953     }
 954
 955     data->wpc = wpc;
 956
 957     return 0;
 958 }
 959
 960
 961 #if wxUSE_UNICODE_MSLU
 962     #define UNUSED_IF_MSLU(param)
 963 #else
 964     #define UNUSED_IF_MSLU(param) param
 965 #endif
 966
 967 bool
 968 wxTextCtrl::StreamIn(const wxString& value,
 969                      wxFontEncoding UNUSED_IF_MSLU(encoding),
 970                      bool selectionOnly)
 971 {
 972 #if wxUSE_UNICODE_MSLU
 973     const wchar_t *wpc = value.c_str();
 974 #else // !wxUSE_UNICODE_MSLU
 975     wxCSConv conv(encoding);
 976
 977     const size_t len = conv.MB2WC(NULL, value.mb_str(), value.length());
 978
 979     if (len == wxCONV_FAILED)
 980         return false;
 981
 982 #if wxUSE_WCHAR_T
 983     wxWCharBuffer wchBuf(len);
 984     wchar_t *wpc = wchBuf.data();
 985 #else
 986     wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
 987     wchar_t *wpc = wchBuf;
 988 #endif
 989
 990     conv.MB2WC(wpc, value.mb_str(), value.length());
 991 #endif // wxUSE_UNICODE_MSLU
 992
 993     // finally, stream it in the control
 994     EDITSTREAM eds;
 995     wxZeroMemory(eds);
 996     eds.dwCookie = (DWORD)&wpc;
 997     // the cast below is needed for broken (very) old mingw32 headers
 998     eds.pfnCallback = (EDITSTREAMCALLBACK)wxRichEditStreamIn;
 999
1000     // same problem as in DoWriteText(): we can get multiple events here
1001     UpdatesCountFilter ucf(m_updatesCount);
1002
1003     ::SendMessage(GetHwnd(), EM_STREAMIN,
1004                   SF_TEXT |
1005                   SF_UNICODE |
1006                   (selectionOnly ? SFF_SELECTION : 0),
1007                   (LPARAM)&eds);
1008
1009     // It's okay for EN_UPDATE to not be sent if the selection is empty and
1010     // the text is empty, otherwise warn the programmer about it.
1011     wxASSERT_MSG( ucf.GotUpdate() || ( !HasSelection() && value.empty() ),
1012                   _T("EM_STREAMIN didn't send EN_UPDATE?") );
1013
1014     if ( eds.dwError )
1015     {
1016         wxLogLastError(_T("EM_STREAMIN"));
1017     }
1018
1019 #if !wxUSE_WCHAR_T
1020     free(wchBuf);
1021 #endif // !wxUSE_WCHAR_T
1022
1023     return true;
1024 }
1025
1026 #if !wxUSE_UNICODE_MSLU
1027
1028 wxString
1029 wxTextCtrl::StreamOut(wxFontEncoding encoding, bool selectionOnly) const
1030 {
1031     wxString out;
1032
1033     const int len = GetWindowTextLength(GetHwnd());
1034
1035 #if wxUSE_WCHAR_T
1036     wxWCharBuffer wchBuf(len);
1037     wchar_t *wpc = wchBuf.data();
1038 #else
1039     wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
1040     wchar_t *wpc = wchBuf;
1041 #endif
1042
1043     wxStreamOutData data;
1044     data.wpc = wpc;
1045     data.len = len;
1046
1047     EDITSTREAM eds;
1048     wxZeroMemory(eds);
1049     eds.dwCookie = (DWORD)&data;
1050     eds.pfnCallback = wxRichEditStreamOut;
1051
1052     ::SendMessage
1053       (
1054         GetHwnd(),
1055         EM_STREAMOUT,
1056         SF_TEXT | SF_UNICODE | (selectionOnly ? SFF_SELECTION : 0),
1057         (LPARAM)&eds
1058       );
1059
1060     if ( eds.dwError )
1061     {
1062         wxLogLastError(_T("EM_STREAMOUT"));
1063     }
1064     else // streamed out ok
1065     {
1066         // NUL-terminate the string because its length could have been
1067         // decreased by wxRichEditStreamOut
1068         *(wchBuf.data() + data.len) = L'\0';
1069
1070         // now convert to the given encoding (this is a possibly lossful
1071         // conversion but what else can we do)
1072         wxCSConv conv(encoding);
1073         size_t lenNeeded = conv.WC2MB(NULL, wchBuf, 0);
1074
1075         if ( lenNeeded != wxCONV_FAILED && lenNeeded++ )
1076         {
1077             conv.WC2MB(wxStringBuffer(out, lenNeeded), wchBuf, lenNeeded);
1078         }
1079     }
1080
1081 #if !wxUSE_WCHAR_T
1082     free(wchBuf);
1083 #endif // !wxUSE_WCHAR_T
1084
1085     return out;
1086 }
1087
1088 #endif // !wxUSE_UNICODE_MSLU
1089
1090 #endif // wxUSE_RICHEDIT
1091
1092 void wxTextCtrl::WriteText(const wxString& value)
1093 {
1094     DoWriteText(value);
1095 }
1096
1097 void wxTextCtrl::DoWriteText(const wxString& value, int flags)
1098 {
1099     bool selectionOnly = (flags & SetValue_SelectionOnly) != 0;
1100     wxString valueDos;
1101     if ( m_windowStyle & wxTE_MULTILINE )
1102         valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
1103     else
1104         valueDos = value;
1105
1106 #if wxUSE_RICHEDIT
1107     // there are several complications with the rich edit controls here
1108     bool done = false;
1109     if ( IsRich() )
1110     {
1111         // first, ensure that the new text will be in the default style
1112         if ( !m_defaultStyle.IsDefault() )
1113         {
1114             long start, end;
1115             GetSelection(&start, &end);
1116             SetStyle(start, end, m_defaultStyle);
1117         }
1118
1119 #if wxUSE_UNICODE_MSLU
1120         // RichEdit doesn't have Unicode version of EM_REPLACESEL on Win9x,
1121         // but EM_STREAMIN works
1122         if ( wxUsingUnicowsDll() && GetRichVersion() > 1 )
1123         {
1124            done = StreamIn(valueDos, wxFONTENCODING_SYSTEM, selectionOnly);
1125         }
1126 #endif // wxUSE_UNICODE_MSLU
1127
1128 #if !wxUSE_UNICODE
1129         // next check if the text we're inserting must be shown in a non
1130         // default charset -- this only works for RichEdit > 1.0
1131         if ( GetRichVersion() > 1 )
1132         {
1133             wxFont font = m_defaultStyle.GetFont();
1134             if ( !font.Ok() )
1135                 font = GetFont();
1136
1137             if ( font.Ok() )
1138             {
1139                wxFontEncoding encoding = font.GetEncoding();
1140                if ( encoding != wxFONTENCODING_SYSTEM )
1141                {
1142                    // we have to use EM_STREAMIN to force richedit control 2.0+
1143                    // to show any text in the non default charset -- otherwise
1144                    // it thinks it knows better than we do and always shows it
1145                    // in the default one
1146                    done = StreamIn(valueDos, encoding, selectionOnly);
1147                }
1148             }
1149         }
1150 #endif // !wxUSE_UNICODE
1151     }
1152
1153     if ( !done )
1154 #endif // wxUSE_RICHEDIT
1155     {
1156         // in some cases we get 2 EN_CHANGE notifications after the SendMessage
1157         // call (this happens for plain EDITs with EM_REPLACESEL and under some
1158         // -- undetermined -- conditions with rich edit) and sometimes we don't
1159         // get any events at all (plain EDIT with WM_SETTEXT), so ensure that
1160         // we generate exactly one of them by ignoring all but the first one in
1161         // SendUpdateEvent() and generating one ourselves if we hadn't got any
1162         // notifications from Windows
1163         if ( !(flags & SetValue_SendEvent) )
1164             m_updatesCount = -2;        // suppress any update event
1165
1166         UpdatesCountFilter ucf(m_updatesCount);
1167
1168         ::SendMessage(GetHwnd(), selectionOnly ? EM_REPLACESEL : WM_SETTEXT,
1169                       // EM_REPLACESEL takes 1 to indicate the operation should be redoable
1170                       selectionOnly ? 1 : 0, (LPARAM)valueDos.wx_str());
1171
1172         if ( !ucf.GotUpdate() && (flags & SetValue_SendEvent) )
1173         {
1174             SendUpdateEvent();
1175         }
1176     }
1177 }
1178
1179 void wxTextCtrl::AppendText(const wxString& text)
1180 {
1181     wxTextEntry::AppendText(text);
1182
1183 #if wxUSE_RICHEDIT
1184     // don't do this if we're frozen, saves some time
1185     if ( !IsFrozen() && IsMultiLine() && GetRichVersion() > 1 )
1186     {
1187         // setting the caret to the end and showing it simply doesn't work for
1188         // RichEdit 2.0 -- force it to still do what we want
1189         ::SendMessage(GetHwnd(), EM_LINESCROLL, 0, GetNumberOfLines());
1190     }
1191 #endif // wxUSE_RICHEDIT
1192 }
1193
1194 void wxTextCtrl::Clear()
1195 {
1196     ::SetWindowText(GetHwnd(), wxEmptyString);
1197
1198     if ( IsMultiLine() && !IsRich() )
1199     {
1200         // rich edit controls send EN_UPDATE from WM_SETTEXT handler themselves
1201         // but the normal ones don't -- make Clear() behaviour consistent by
1202         // always sending this event
1203         SendUpdateEvent();
1204     }
1205 }
1206
1207 #ifdef __WIN32__
1208
1209 bool wxTextCtrl::EmulateKeyPress(const wxKeyEvent& event)
1210 {
1211     SetFocus();
1212
1213     size_t lenOld = GetValue().length();
1214
1215     wxUint32 code = event.GetRawKeyCode();
1216     ::keybd_event((BYTE)code, 0, 0 /* key press */, 0);
1217     ::keybd_event((BYTE)code, 0, KEYEVENTF_KEYUP, 0);
1218
1219     // assume that any alphanumeric key changes the total number of characters
1220     // in the control - this should work in 99% of cases
1221     return GetValue().length() != lenOld;
1222 }
1223
1224 #endif // __WIN32__
1225
1226 // ----------------------------------------------------------------------------
1227 // Accessors
1228 // ----------------------------------------------------------------------------
1229
1230 void wxTextCtrl::SetInsertionPointEnd()
1231 {
1232     // we must not do anything if the caret is already there because calling
1233     // SetInsertionPoint() thaws the controls if Freeze() had been called even
1234     // if it doesn't actually move the caret anywhere and so the simple fact of
1235     // doing it results in horrible flicker when appending big amounts of text
1236     // to the control in a few chunks (see DoAddText() test in the text sample)
1237     const wxTextPos lastPosition = GetLastPosition();
1238     if ( GetInsertionPoint() == lastPosition )
1239     {
1240         return;
1241     }
1242
1243     SetInsertionPoint(lastPosition);
1244 }
1245
1246 long wxTextCtrl::GetInsertionPoint() const
1247 {
1248 #if wxUSE_RICHEDIT
1249     if ( IsRich() )
1250     {
1251         CHARRANGE range;
1252         range.cpMin = 0;
1253         range.cpMax = 0;
1254         ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
1255         return range.cpMin;
1256     }
1257 #endif // wxUSE_RICHEDIT
1258
1259     return wxTextEntry::GetInsertionPoint();
1260 }
1261
1262 wxTextPos wxTextCtrl::GetLastPosition() const
1263 {
1264     if ( IsMultiLine() )
1265     {
1266         int numLines = GetNumberOfLines();
1267         long posStartLastLine = XYToPosition(0, numLines - 1);
1268
1269         long lenLastLine = GetLengthOfLineContainingPos(posStartLastLine);
1270
1271         return posStartLastLine + lenLastLine;
1272     }
1273
1274     return wxTextEntry::GetLastPosition();
1275 }
1276
1277 // If the return values from and to are the same, there is no
1278 // selection.
1279 void wxTextCtrl::GetSelection(long *from, long *to) const
1280 {
1281 #if wxUSE_RICHEDIT
1282     if ( IsRich() )
1283     {
1284         CHARRANGE charRange;
1285         ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &charRange);
1286
1287         *from = charRange.cpMin;
1288         *to = charRange.cpMax;
1289     }
1290     else
1291 #endif // !wxUSE_RICHEDIT
1292     {
1293         wxTextEntry::GetSelection(from, to);
1294     }
1295 }
1296
1297 // ----------------------------------------------------------------------------
1298 // selection
1299 // ----------------------------------------------------------------------------
1300
1301 void wxTextCtrl::DoSetSelection(long from, long to, int flags)
1302 {
1303     HWND hWnd = GetHwnd();
1304
1305 #if wxUSE_RICHEDIT
1306     if ( IsRich() )
1307     {
1308         CHARRANGE range;
1309         range.cpMin = from;
1310         range.cpMax = to;
1311         ::SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM)&range);
1312     }
1313     else
1314 #endif // wxUSE_RICHEDIT
1315     {
1316         wxTextEntry::DoSetSelection(from, to, flags);
1317     }
1318
1319     if ( (flags & SetSel_Scroll) && !IsFrozen() )
1320     {
1321 #if wxUSE_RICHEDIT
1322         // richedit 3.0 (i.e. the version living in riched20.dll distributed
1323         // with Windows 2000 and beyond) doesn't honour EM_SCROLLCARET when
1324         // emulating richedit 2.0 unless the control has focus or ECO_NOHIDESEL
1325         // option is set (but it does work ok in richedit 1.0 mode...)
1326         //
1327         // so to make it work we either need to give focus to it here which
1328         // will probably create many problems (dummy focus events; window
1329         // containing the text control being brought to foreground
1330         // unexpectedly; ...) or to temporarily set ECO_NOHIDESEL which may
1331         // create other problems too -- and in fact it does because if we turn
1332         // on/off this style while appending the text to the control, the
1333         // vertical scrollbar never appears in it even if we append tons of
1334         // text and to work around this the only solution I found was to use
1335         // ES_DISABLENOSCROLL
1336         //
1337         // this is very ugly but I don't see any other way to make this work
1338         long style = 0;
1339         if ( GetRichVersion() > 1 )
1340         {
1341             if ( !HasFlag(wxTE_NOHIDESEL) )
1342             {
1343                 // setting ECO_NOHIDESEL also sets WS_VISIBLE and possibly
1344                 // others, remember the style so we can reset it later if needed
1345                 style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1346                 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1347                               ECOOP_OR, ECO_NOHIDESEL);
1348             }
1349             //else: everything is already ok
1350         }
1351 #endif // wxUSE_RICHEDIT
1352
1353         ::SendMessage(hWnd, EM_SCROLLCARET, 0, (LPARAM)0);
1354
1355 #if wxUSE_RICHEDIT
1356         // restore ECO_NOHIDESEL if we changed it
1357         if ( GetRichVersion() > 1 && !HasFlag(wxTE_NOHIDESEL) )
1358         {
1359             ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1360                           ECOOP_AND, ~ECO_NOHIDESEL);
1361             if ( style != ::GetWindowLong(GetHwnd(), GWL_STYLE) )
1362                 ::SetWindowLong(GetHwnd(), GWL_STYLE, style);
1363         }
1364 #endif // wxUSE_RICHEDIT
1365     }
1366 }
1367
1368 // ----------------------------------------------------------------------------
1369 // Working with files
1370 // ----------------------------------------------------------------------------
1371
1372 bool wxTextCtrl::DoLoadFile(const wxString& file, int fileType)
1373 {
1374     if ( wxTextCtrlBase::DoLoadFile(file, fileType) )
1375     {
1376         // update the size limit if needed
1377         AdjustSpaceLimit();
1378
1379         return true;
1380     }
1381
1382     return false;
1383 }
1384
1385 // ----------------------------------------------------------------------------
1386 // dirty status
1387 // ----------------------------------------------------------------------------
1388
1389 bool wxTextCtrl::IsModified() const
1390 {
1391     return ::SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0;
1392 }
1393
1394 void wxTextCtrl::MarkDirty()
1395 {
1396     ::SendMessage(GetHwnd(), EM_SETMODIFY, TRUE, 0);
1397 }
1398
1399 void wxTextCtrl::DiscardEdits()
1400 {
1401     ::SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0);
1402 }
1403
1404 // ----------------------------------------------------------------------------
1405 // Positions <-> coords
1406 // ----------------------------------------------------------------------------
1407
1408 int wxTextCtrl::GetNumberOfLines() const
1409 {
1410     return (int)::SendMessage(GetHwnd(), EM_GETLINECOUNT, 0, 0);
1411 }
1412
1413 long wxTextCtrl::XYToPosition(long x, long y) const
1414 {
1415     // This gets the char index for the _beginning_ of this line
1416     long charIndex = ::SendMessage(GetHwnd(), EM_LINEINDEX, y, 0);
1417
1418     return charIndex + x;
1419 }
1420
1421 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
1422 {
1423     HWND hWnd = GetHwnd();
1424
1425     // This gets the line number containing the character
1426     long lineNo;
1427 #if wxUSE_RICHEDIT
1428     if ( IsRich() )
1429     {
1430         lineNo = ::SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, pos);
1431     }
1432     else
1433 #endif // wxUSE_RICHEDIT
1434     {
1435         lineNo = ::SendMessage(hWnd, EM_LINEFROMCHAR, pos, 0);
1436     }
1437
1438     if ( lineNo == -1 )
1439     {
1440         // no such line
1441         return false;
1442     }
1443
1444     // This gets the char index for the _beginning_ of this line
1445     long charIndex = ::SendMessage(hWnd, EM_LINEINDEX, lineNo, 0);
1446     if ( charIndex == -1 )
1447     {
1448         return false;
1449     }
1450
1451     // The X position must therefore be the different between pos and charIndex
1452     if ( x )
1453         *x = pos - charIndex;
1454     if ( y )
1455         *y = lineNo;
1456
1457     return true;
1458 }
1459
1460 wxTextCtrlHitTestResult
1461 wxTextCtrl::HitTest(const wxPoint& pt, long *posOut) const
1462 {
1463     // first get the position from Windows
1464     LPARAM lParam;
1465
1466 #if wxUSE_RICHEDIT
1467     POINTL ptl;
1468     if ( IsRich() )
1469     {
1470         // for rich edit controls the position is passed iva the struct fields
1471         ptl.x = pt.x;
1472         ptl.y = pt.y;
1473         lParam = (LPARAM)&ptl;
1474     }
1475     else
1476 #endif // wxUSE_RICHEDIT
1477     {
1478         // for the plain ones, we are limited to 16 bit positions which are
1479         // combined in a single 32 bit value
1480         lParam = MAKELPARAM(pt.x, pt.y);
1481     }
1482
1483     LRESULT pos = ::SendMessage(GetHwnd(), EM_CHARFROMPOS, 0, lParam);
1484
1485     if ( pos == -1 )
1486     {
1487         // this seems to indicate an error...
1488         return wxTE_HT_UNKNOWN;
1489     }
1490
1491 #if wxUSE_RICHEDIT
1492     if ( !IsRich() )
1493 #endif // wxUSE_RICHEDIT
1494     {
1495         // for plain EDIT controls the higher word contains something else
1496         pos = LOWORD(pos);
1497     }
1498
1499
1500     // next determine where it is relatively to our point: EM_CHARFROMPOS
1501     // always returns the closest character but we need to be more precise, so
1502     // double check that we really are where it pretends
1503     POINTL ptReal;
1504
1505 #if wxUSE_RICHEDIT
1506     // FIXME: we need to distinguish between richedit 2 and 3 here somehow but
1507     //        we don't know how to do it
1508     if ( IsRich() )
1509     {
1510         ::SendMessage(GetHwnd(), EM_POSFROMCHAR, (WPARAM)&ptReal, pos);
1511     }
1512     else
1513 #endif // wxUSE_RICHEDIT
1514     {
1515         LRESULT lRc = ::SendMessage(GetHwnd(), EM_POSFROMCHAR, pos, 0);
1516
1517         if ( lRc == -1 )
1518         {
1519             // this is apparently returned when pos corresponds to the last
1520             // position
1521             ptReal.x =
1522             ptReal.y = 0;
1523         }
1524         else
1525         {
1526             ptReal.x = LOWORD(lRc);
1527             ptReal.y = HIWORD(lRc);
1528         }
1529     }
1530
1531     wxTextCtrlHitTestResult rc;
1532
1533     if ( pt.y > ptReal.y + GetCharHeight() )
1534         rc = wxTE_HT_BELOW;
1535     else if ( pt.x > ptReal.x + GetCharWidth() )
1536         rc = wxTE_HT_BEYOND;
1537     else
1538         rc = wxTE_HT_ON_TEXT;
1539
1540     if ( posOut )
1541         *posOut = pos;
1542
1543     return rc;
1544 }
1545
1546 // ----------------------------------------------------------------------------
1547 //
1548 // ----------------------------------------------------------------------------
1549
1550 void wxTextCtrl::ShowPosition(long pos)
1551 {
1552     HWND hWnd = GetHwnd();
1553
1554     // To scroll to a position, we pass the number of lines and characters
1555     // to scroll *by*. This means that we need to:
1556     // (1) Find the line position of the current line.
1557     // (2) Find the line position of pos.
1558     // (3) Scroll by (pos - current).
1559     // For now, ignore the horizontal scrolling.
1560
1561     // Is this where scrolling is relative to - the line containing the caret?
1562     // Or is the first visible line??? Try first visible line.
1563 //    int currentLineLineNo1 = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, -1, 0L);
1564
1565     int currentLineLineNo = (int)::SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, 0, 0);
1566
1567     int specifiedLineLineNo = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, pos, 0);
1568
1569     int linesToScroll = specifiedLineLineNo - currentLineLineNo;
1570
1571     if (linesToScroll != 0)
1572       ::SendMessage(hWnd, EM_LINESCROLL, 0, linesToScroll);
1573 }
1574
1575 long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const
1576 {
1577     return ::SendMessage(GetHwnd(), EM_LINELENGTH, pos, 0);
1578 }
1579
1580 int wxTextCtrl::GetLineLength(long lineNo) const
1581 {
1582     long pos = XYToPosition(0, lineNo);
1583
1584     return GetLengthOfLineContainingPos(pos);
1585 }
1586
1587 wxString wxTextCtrl::GetLineText(long lineNo) const
1588 {
1589     size_t len = (size_t)GetLineLength(lineNo) + 1;
1590
1591     // there must be at least enough place for the length WORD in the
1592     // buffer
1593     len += sizeof(WORD);
1594
1595     wxString str;
1596     {
1597         wxStringBufferLength tmp(str, len);
1598         wxChar *buf = tmp;
1599
1600         *(WORD *)buf = (WORD)len;
1601         len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf);
1602
1603 #if wxUSE_RICHEDIT
1604         if ( IsRich() )
1605         {
1606             // remove the '\r' returned by the rich edit control, the user code
1607             // should never see it
1608             if ( buf[len - 2] == _T('\r') && buf[len - 1] == _T('\n') )
1609             {
1610                 // richedit 1.0 uses "\r\n" as line terminator, so remove "\r"
1611                 // here and "\n" below
1612                 buf[len - 2] = _T('\n');
1613                 len--;
1614             }
1615             else if ( buf[len - 1] == _T('\r') )
1616             {
1617                 // richedit 2.0+ uses only "\r", replace it with "\n"
1618                 buf[len - 1] = _T('\n');
1619             }
1620         }
1621 #endif // wxUSE_RICHEDIT
1622
1623         // remove the '\n' at the end, if any (this is how this function is
1624         // supposed to work according to the docs)
1625         if ( buf[len - 1] == _T('\n') )
1626         {
1627             len--;
1628         }
1629
1630         buf[len] = 0;
1631         tmp.SetLength(len);
1632     }
1633
1634     return str;
1635 }
1636
1637 void wxTextCtrl::SetMaxLength(unsigned long len)
1638 {
1639 #if wxUSE_RICHEDIT
1640     if ( IsRich() )
1641     {
1642         ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, len ? len : 0x7fffffff);
1643     }
1644     else
1645 #endif // wxUSE_RICHEDIT
1646     {
1647         wxTextEntry::SetMaxLength(len);
1648     }
1649 }
1650
1651 // ----------------------------------------------------------------------------
1652 // Undo/redo
1653 // ----------------------------------------------------------------------------
1654
1655 void wxTextCtrl::Redo()
1656 {
1657 #if wxUSE_RICHEDIT
1658     if ( GetRichVersion() > 1 )
1659     {
1660         ::SendMessage(GetHwnd(), EM_REDO, 0, 0);
1661         return;
1662     }
1663 #endif // wxUSE_RICHEDIT
1664
1665     wxTextEntry::Redo();
1666 }
1667
1668 bool wxTextCtrl::CanRedo() const
1669 {
1670 #if wxUSE_RICHEDIT
1671     if ( GetRichVersion() > 1 )
1672         return ::SendMessage(GetHwnd(), EM_CANREDO, 0, 0) != 0;
1673 #endif // wxUSE_RICHEDIT
1674
1675     return wxTextEntry::CanRedo();
1676 }
1677
1678 // ----------------------------------------------------------------------------
1679 // caret handling (Windows only)
1680 // ----------------------------------------------------------------------------
1681
1682 bool wxTextCtrl::ShowNativeCaret(bool show)
1683 {
1684     if ( show != m_isNativeCaretShown )
1685     {
1686         if ( !(show ? ::ShowCaret(GetHwnd()) : ::HideCaret(GetHwnd())) )
1687         {
1688             // not an error, may simply indicate that it's not shown/hidden
1689             // yet (i.e. it had been hidden/shown 2 times before)
1690             return false;
1691         }
1692
1693         m_isNativeCaretShown = show;
1694     }
1695
1696     return true;
1697 }
1698
1699 // ----------------------------------------------------------------------------
1700 // implementation details
1701 // ----------------------------------------------------------------------------
1702
1703 void wxTextCtrl::Command(wxCommandEvent & event)
1704 {
1705     SetValue(event.GetString());
1706     ProcessCommand (event);
1707 }
1708
1709 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
1710 {
1711     // By default, load the first file into the text window.
1712     if (event.GetNumberOfFiles() > 0)
1713     {
1714         LoadFile(event.GetFiles()[0]);
1715     }
1716 }
1717
1718 // ----------------------------------------------------------------------------
1719 // kbd input processing
1720 // ----------------------------------------------------------------------------
1721
1722 bool wxTextCtrl::MSWShouldPreProcessMessage(WXMSG* msg)
1723 {
1724     // check for our special keys here: if we don't do it and the parent frame
1725     // uses them as accelerators, they wouldn't work at all, so we disable
1726     // usual preprocessing for them
1727     if ( msg->message == WM_KEYDOWN )
1728     {
1729         const WPARAM vkey = msg->wParam;
1730         if ( HIWORD(msg->lParam) & KF_ALTDOWN )
1731         {
1732             // Alt-Backspace is accelerator for "Undo"
1733             if ( vkey == VK_BACK )
1734                 return false;
1735         }
1736         else // no Alt
1737         {
1738             // we want to process some Ctrl-foo and Shift-bar but no key
1739             // combinations without either Ctrl or Shift nor with both of them
1740             // pressed
1741             const int ctrl = wxIsCtrlDown(),
1742                       shift = wxIsShiftDown();
1743             switch ( ctrl + shift )
1744             {
1745                 default:
1746                     wxFAIL_MSG( _T("how many modifiers have we got?") );
1747                     // fall through
1748
1749                 case 0:
1750                     if ( IsMultiLine() && vkey == VK_RETURN )
1751                         return false;
1752                     // fall through
1753                 case 2:
1754                     break;
1755
1756                 case 1:
1757                     // either Ctrl or Shift pressed
1758                     if ( ctrl )
1759                     {
1760                         switch ( vkey )
1761                         {
1762                             case 'C':
1763                             case 'V':
1764                             case 'X':
1765                             case VK_INSERT:
1766                             case VK_DELETE:
1767                             case VK_HOME:
1768                             case VK_END:
1769                                 return false;
1770                         }
1771                     }
1772                     else // Shift is pressed
1773                     {
1774                         if ( vkey == VK_INSERT || vkey == VK_DELETE )
1775                             return false;
1776                     }
1777             }
1778         }
1779     }
1780
1781     return wxControl::MSWShouldPreProcessMessage(msg);
1782 }
1783
1784 void wxTextCtrl::OnChar(wxKeyEvent& event)
1785 {
1786     switch ( event.GetKeyCode() )
1787     {
1788         case WXK_RETURN:
1789             {
1790                 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1791                 InitCommandEvent(event);
1792                 event.SetString(GetValue());
1793                 if ( HandleWindowEvent(event) )
1794                 if ( !HasFlag(wxTE_MULTILINE) )
1795                     return;
1796                 //else: multiline controls need Enter for themselves
1797             }
1798             break;
1799
1800         case WXK_TAB:
1801             // ok, so this is getting absolutely ridiculous but I don't see
1802             // any other way to fix this bug: when a multiline text control is
1803             // inside a wxFrame, we need to generate the navigation event as
1804             // otherwise nothing happens at all, but when the same control is
1805             // created inside a dialog, IsDialogMessage() *does* switch focus
1806             // all by itself and so if we do it here as well, it is advanced
1807             // twice and goes to the next control... to prevent this from
1808             // happening we're doing this ugly check, the logic being that if
1809             // we don't have focus then it had been already changed to the next
1810             // control
1811             //
1812             // the right thing to do would, of course, be to understand what
1813             // the hell is IsDialogMessage() doing but this is beyond my feeble
1814             // forces at the moment unfortunately
1815             if ( !(m_windowStyle & wxTE_PROCESS_TAB))
1816             {
1817                 if ( FindFocus() == this )
1818                 {
1819                     int flags = 0;
1820                     if (!event.ShiftDown())
1821                         flags |= wxNavigationKeyEvent::IsForward ;
1822                     if (event.ControlDown())
1823                         flags |= wxNavigationKeyEvent::WinChange ;
1824                     if (Navigate(flags))
1825                         return;
1826                 }
1827             }
1828             else
1829             {
1830                 // Insert tab since calling the default Windows handler
1831                 // doesn't seem to do it
1832                 WriteText(wxT("\t"));
1833                 return;
1834             }
1835             break;
1836     }
1837
1838     // no, we didn't process it
1839     event.Skip();
1840 }
1841
1842 WXLRESULT wxTextCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
1843 {
1844     WXLRESULT lRc = wxTextCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
1845
1846     switch ( nMsg )
1847     {
1848         case WM_GETDLGCODE:
1849             {
1850                 // we always want the chars and the arrows: the arrows for
1851                 // navigation and the chars because we want Ctrl-C to work even
1852                 // in a read only control
1853                 long lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
1854
1855                 if ( IsEditable() )
1856                 {
1857                     // we may have several different cases:
1858                     // 1. normal: both TAB and ENTER are used for navigation
1859                     // 2. ctrl wants TAB for itself: ENTER is used to pass to
1860                     //    the next control in the dialog
1861                     // 3. ctrl wants ENTER for itself: TAB is used for dialog
1862                     //    navigation
1863                     // 4. ctrl wants both TAB and ENTER: Ctrl-ENTER is used to
1864                     //    go to the next control (we need some way to do it)
1865
1866                     // multiline controls should always get ENTER for themselves
1867                     if ( HasFlag(wxTE_PROCESS_ENTER) || HasFlag(wxTE_MULTILINE) )
1868                         lDlgCode |= DLGC_WANTMESSAGE;
1869
1870                     if ( HasFlag(wxTE_PROCESS_TAB) )
1871                         lDlgCode |= DLGC_WANTTAB;
1872
1873                     lRc |= lDlgCode;
1874                 }
1875                 else // !editable
1876                 {
1877                     // NB: use "=", not "|=" as the base class version returns
1878                     //     the same flags is this state as usual (i.e.
1879                     //     including DLGC_WANTMESSAGE). This is strange (how
1880                     //     does it work in the native Win32 apps?) but for now
1881                     //     live with it.
1882                     lRc = lDlgCode;
1883                 }
1884             }
1885             break;
1886     }
1887
1888     return lRc;
1889 }
1890
1891 // ----------------------------------------------------------------------------
1892 // text control event processing
1893 // ----------------------------------------------------------------------------
1894
1895 bool wxTextCtrl::SendUpdateEvent()
1896 {
1897     switch ( m_updatesCount )
1898     {
1899         case 0:
1900             // remember that we've got an update
1901             m_updatesCount++;
1902             break;
1903
1904         case 1:
1905             // we had already sent one event since the last control modification
1906             return false;
1907
1908         default:
1909             wxFAIL_MSG( _T("unexpected wxTextCtrl::m_updatesCount value") );
1910             // fall through
1911
1912         case -1:
1913             // we hadn't updated the control ourselves, this event comes from
1914             // the user, don't need to ignore it nor update the count
1915             break;
1916
1917         case -2:
1918             // the control was updated programmatically and we do NOT want to
1919             // send events
1920             return false;
1921     }
1922
1923     return SendTextUpdatedEvent();
1924 }
1925
1926 bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
1927 {
1928     switch ( param )
1929     {
1930         case EN_CHANGE:
1931             SendUpdateEvent();
1932             break;
1933
1934         case EN_MAXTEXT:
1935             // the text size limit has been hit -- try to increase it
1936             if ( !AdjustSpaceLimit() )
1937             {
1938                 wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, m_windowId);
1939                 InitCommandEvent(event);
1940                 event.SetString(GetValue());
1941                 ProcessCommand(event);
1942             }
1943             break;
1944
1945             // the other edit notification messages are not processed (or, in
1946             // the case of EN_{SET/KILL}FOCUS were already handled at WM_SET/
1947             // KILLFOCUS level)
1948         default:
1949             return false;
1950     }
1951
1952     // processed
1953     return true;
1954 }
1955
1956 WXHBRUSH wxTextCtrl::MSWControlColor(WXHDC hDC, WXHWND hWnd)
1957 {
1958     if ( !IsEnabled() && !HasFlag(wxTE_MULTILINE) )
1959         return MSWControlColorDisabled(hDC);
1960
1961     return wxTextCtrlBase::MSWControlColor(hDC, hWnd);
1962 }
1963
1964 bool wxTextCtrl::HasSpaceLimit(unsigned int *len) const
1965 {
1966     // HACK: we try to automatically extend the limit for the amount of text
1967     //       to allow (interactively) entering more than 64Kb of text under
1968     //       Win9x but we shouldn't reset the text limit which was previously
1969     //       set explicitly with SetMaxLength()
1970     //
1971     //       Unfortunately there is no EM_GETLIMITTEXTSETBYUSER and so we don't
1972     //       know the limit we set (if any). We could solve this by storing the
1973     //       limit we set in wxTextCtrl but to save space we prefer to simply
1974     //       test here the actual limit value: we consider that SetMaxLength()
1975     //       can only be called for small values while EN_MAXTEXT is only sent
1976     //       for large values (in practice the default limit seems to be 30000
1977     //       but make it smaller just to be on the safe side)
1978     *len = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
1979     return *len < 10001;
1980
1981 }
1982
1983 bool wxTextCtrl::AdjustSpaceLimit()
1984 {
1985     unsigned int limit;
1986     if ( HasSpaceLimit(&limit) )
1987         return false;
1988
1989     unsigned int len = ::GetWindowTextLength(GetHwnd());
1990     if ( len >= limit )
1991     {
1992         // increment in 32Kb chunks
1993         SetMaxLength(len + 0x8000);
1994     }
1995
1996     // we changed the limit
1997     return true;
1998 }
1999
2000 bool wxTextCtrl::AcceptsFocusFromKeyboard() const
2001 {
2002     // we don't want focus if we can't be edited unless we're a multiline
2003     // control because then it might be still nice to get focus from keyboard
2004     // to be able to scroll it without mouse
2005     return (IsEditable() || IsMultiLine()) && wxControl::AcceptsFocus();
2006 }
2007
2008 wxSize wxTextCtrl::DoGetBestSize() const
2009 {
2010     int cx, cy;
2011     wxGetCharSize(GetHWND(), &cx, &cy, GetFont());
2012
2013     int wText = DEFAULT_ITEM_WIDTH;
2014
2015     int hText = cy;
2016     if ( m_windowStyle & wxTE_MULTILINE )
2017     {
2018         hText *= wxMax(wxMin(GetNumberOfLines(), 10), 2);
2019     }
2020     //else: for single line control everything is ok
2021
2022     // we have to add the adjustments for the control height only once, not
2023     // once per line, so do it after multiplication above
2024     hText += EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy) - cy;
2025
2026     return wxSize(wText, hText);
2027 }
2028
2029 // ----------------------------------------------------------------------------
2030 // standard handlers for standard edit menu events
2031 // ----------------------------------------------------------------------------
2032
2033 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
2034 {
2035     Cut();
2036 }
2037
2038 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
2039 {
2040     Copy();
2041 }
2042
2043 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
2044 {
2045     Paste();
2046 }
2047
2048 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
2049 {
2050     Undo();
2051 }
2052
2053 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
2054 {
2055     Redo();
2056 }
2057
2058 void wxTextCtrl::OnDelete(wxCommandEvent& WXUNUSED(event))
2059 {
2060     long from, to;
2061     GetSelection(& from, & to);
2062     if (from != -1 && to != -1)
2063         Remove(from, to);
2064 }
2065
2066 void wxTextCtrl::OnSelectAll(wxCommandEvent& WXUNUSED(event))
2067 {
2068     SetSelection(-1, -1);
2069 }
2070
2071 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
2072 {
2073     event.Enable( CanCut() );
2074 }
2075
2076 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
2077 {
2078     event.Enable( CanCopy() );
2079 }
2080
2081 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
2082 {
2083     event.Enable( CanPaste() );
2084 }
2085
2086 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
2087 {
2088     event.Enable( CanUndo() );
2089 }
2090
2091 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
2092 {
2093     event.Enable( CanRedo() );
2094 }
2095
2096 void wxTextCtrl::OnUpdateDelete(wxUpdateUIEvent& event)
2097 {
2098     long from, to;
2099     GetSelection(& from, & to);
2100     event.Enable(from != -1 && to != -1 && from != to && IsEditable()) ;
2101 }
2102
2103 void wxTextCtrl::OnUpdateSelectAll(wxUpdateUIEvent& event)
2104 {
2105     event.Enable(GetLastPosition() > 0);
2106 }
2107
2108 void wxTextCtrl::OnContextMenu(wxContextMenuEvent& event)
2109 {
2110 #if wxUSE_RICHEDIT
2111     if (IsRich())
2112     {
2113         if (!m_privateContextMenu)
2114         {
2115             m_privateContextMenu = new wxMenu;
2116             m_privateContextMenu->Append(wxID_UNDO, _("&Undo"));
2117             m_privateContextMenu->Append(wxID_REDO, _("&Redo"));
2118             m_privateContextMenu->AppendSeparator();
2119             m_privateContextMenu->Append(wxID_CUT, _("Cu&t"));
2120             m_privateContextMenu->Append(wxID_COPY, _("&Copy"));
2121             m_privateContextMenu->Append(wxID_PASTE, _("&Paste"));
2122             m_privateContextMenu->Append(wxID_CLEAR, _("&Delete"));
2123             m_privateContextMenu->AppendSeparator();
2124             m_privateContextMenu->Append(wxID_SELECTALL, _("Select &All"));
2125         }
2126         PopupMenu(m_privateContextMenu);
2127         return;
2128     }
2129     else
2130 #endif
2131     event.Skip();
2132 }
2133
2134 void wxTextCtrl::OnSetFocus(wxFocusEvent& event)
2135 {
2136     // be sure the caret remains invisible if the user had hidden it
2137     if ( !m_isNativeCaretShown )
2138     {
2139         ::HideCaret(GetHwnd());
2140     }
2141
2142     event.Skip();
2143 }
2144
2145 // ----------------------------------------------------------------------------
2146 // Default colors for MSW text control
2147 //
2148 // Set default background color to the native white instead of
2149 // the default wxSYS_COLOUR_BTNFACE (is triggered with wxNullColour).
2150 // ----------------------------------------------------------------------------
2151
2152 wxVisualAttributes wxTextCtrl::GetDefaultAttributes() const
2153 {
2154     wxVisualAttributes attrs;
2155     attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
2156     attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
2157     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW); //white
2158
2159     return attrs;
2160 }
2161
2162 // the rest of the file only deals with the rich edit controls
2163 #if wxUSE_RICHEDIT
2164
2165 // ----------------------------------------------------------------------------
2166 // EN_LINK processing
2167 // ----------------------------------------------------------------------------
2168
2169 bool wxTextCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
2170 {
2171     NMHDR *hdr = (NMHDR* )lParam;
2172     switch ( hdr->code )
2173     {
2174        case EN_MSGFILTER:
2175             {
2176                 const MSGFILTER *msgf = (MSGFILTER *)lParam;
2177                 UINT msg = msgf->msg;
2178
2179                 // this is a bit crazy but richedit 1.0 sends us all mouse
2180                 // events _except_ WM_LBUTTONUP (don't ask me why) so we have
2181                 // generate the wxWin events for this message manually
2182                 //
2183                 // NB: in fact, this is still not totally correct as it does
2184                 //     send us WM_LBUTTONUP if the selection was cleared by the
2185                 //     last click -- so currently we get 2 events in this case,
2186                 //     but as I don't see any obvious way to check for this I
2187                 //     leave this code in place because it's still better than
2188                 //     not getting left up events at all
2189                 if ( msg == WM_LBUTTONUP )
2190                 {
2191                     WXUINT flags = msgf->wParam;
2192                     int x = GET_X_LPARAM(msgf->lParam),
2193                         y = GET_Y_LPARAM(msgf->lParam);
2194
2195                     HandleMouseEvent(msg, x, y, flags);
2196                 }
2197             }
2198
2199             // return true to process the event (and false to ignore it)
2200             return true;
2201
2202         case EN_LINK:
2203             {
2204                 const ENLINK *enlink = (ENLINK *)hdr;
2205
2206                 switch ( enlink->msg )
2207                 {
2208                     case WM_SETCURSOR:
2209                         // ok, so it is hardcoded - do we really nee to
2210                         // customize it?
2211                         {
2212                             wxCursor cur(wxCURSOR_HAND);
2213                             ::SetCursor(GetHcursorOf(cur));
2214                             *result = TRUE;
2215                             break;
2216                         }
2217
2218                     case WM_MOUSEMOVE:
2219                     case WM_LBUTTONDOWN:
2220                     case WM_LBUTTONUP:
2221                     case WM_LBUTTONDBLCLK:
2222                     case WM_RBUTTONDOWN:
2223                     case WM_RBUTTONUP:
2224                     case WM_RBUTTONDBLCLK:
2225                         // send a mouse event
2226                         {
2227                             static const wxEventType eventsMouse[] =
2228                             {
2229                                 wxEVT_MOTION,
2230                                 wxEVT_LEFT_DOWN,
2231                                 wxEVT_LEFT_UP,
2232                                 wxEVT_LEFT_DCLICK,
2233                                 wxEVT_RIGHT_DOWN,
2234                                 wxEVT_RIGHT_UP,
2235                                 wxEVT_RIGHT_DCLICK,
2236                             };
2237
2238                             // the event ids are consecutive
2239                             wxMouseEvent
2240                                 evtMouse(eventsMouse[enlink->msg - WM_MOUSEMOVE]);
2241
2242                             InitMouseEvent(evtMouse,
2243                                            GET_X_LPARAM(enlink->lParam),
2244                                            GET_Y_LPARAM(enlink->lParam),
2245                                            enlink->wParam);
2246
2247                             wxTextUrlEvent event(m_windowId, evtMouse,
2248                                                  enlink->chrg.cpMin,
2249                                                  enlink->chrg.cpMax);
2250
2251                             InitCommandEvent(event);
2252
2253                             *result = ProcessCommand(event);
2254                         }
2255                         break;
2256                 }
2257             }
2258             return true;
2259     }
2260
2261     // not processed, leave it to the base class
2262     return wxTextCtrlBase::MSWOnNotify(idCtrl, lParam, result);
2263 }
2264
2265 #if wxUSE_DRAG_AND_DROP
2266
2267 void wxTextCtrl::SetDropTarget(wxDropTarget *dropTarget)
2268 {
2269     if ( m_dropTarget == wxRICHTEXT_DEFAULT_DROPTARGET )
2270     {
2271         // get rid of the built-in drop target
2272         ::RevokeDragDrop(GetHwnd());
2273         m_dropTarget = NULL;
2274     }
2275
2276     wxTextCtrlBase::SetDropTarget(dropTarget);
2277 }
2278
2279 #endif // wxUSE_DRAG_AND_DROP
2280
2281 // ----------------------------------------------------------------------------
2282 // colour setting for the rich edit controls
2283 // ----------------------------------------------------------------------------
2284
2285 bool wxTextCtrl::SetBackgroundColour(const wxColour& colour)
2286 {
2287     if ( !wxTextCtrlBase::SetBackgroundColour(colour) )
2288     {
2289         // colour didn't really change
2290         return false;
2291     }
2292
2293     if ( IsRich() )
2294     {
2295         // rich edit doesn't use WM_CTLCOLOR, hence we need to send
2296         // EM_SETBKGNDCOLOR additionally
2297         ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour));
2298     }
2299
2300     return true;
2301 }
2302
2303 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
2304 {
2305     if ( !wxTextCtrlBase::SetForegroundColour(colour) )
2306     {
2307         // colour didn't really change
2308         return false;
2309     }
2310
2311     if ( IsRich() )
2312     {
2313         // change the colour of everything
2314         CHARFORMAT cf;
2315         wxZeroMemory(cf);
2316         cf.cbSize = sizeof(cf);
2317         cf.dwMask = CFM_COLOR;
2318         cf.crTextColor = wxColourToRGB(colour);
2319         ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf);
2320     }
2321
2322     return true;
2323 }
2324
2325 // ----------------------------------------------------------------------------
2326 // styling support for rich edit controls
2327 // ----------------------------------------------------------------------------
2328
2329 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
2330 {
2331     if ( !IsRich() )
2332     {
2333         // can't do it with normal text control
2334         return false;
2335     }
2336
2337     // the richedit 1.0 doesn't handle setting background colour, so don't
2338     // even try to do anything if it's the only thing we want to change
2339     if ( m_verRichEdit == 1 && !style.HasFont() && !style.HasTextColour() &&
2340         !style.HasLeftIndent() && !style.HasRightIndent() && !style.HasAlignment() &&
2341         !style.HasTabs() )
2342     {
2343         // nothing to do: return true if there was really nothing to do and
2344         // false if we failed to set bg colour
2345         return !style.HasBackgroundColour();
2346     }
2347
2348     // order the range if needed
2349     if ( start > end )
2350     {
2351         long tmp = start;
2352         start = end;
2353         end = tmp;
2354     }
2355
2356     // we can only change the format of the selection, so select the range we
2357     // want and restore the old selection later
2358     long startOld, endOld;
2359     GetSelection(&startOld, &endOld);
2360
2361     // but do we really have to change the selection?
2362     bool changeSel = start != startOld || end != endOld;
2363
2364     if ( changeSel )
2365     {
2366         DoSetSelection(start, end, SetSel_NoScroll);
2367     }
2368
2369     // initialize CHARFORMAT struct
2370 #if wxUSE_RICHEDIT2
2371     CHARFORMAT2 cf;
2372 #else
2373     CHARFORMAT cf;
2374 #endif
2375
2376     wxZeroMemory(cf);
2377
2378     // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2379     // CHARFORMAT in that case
2380 #if wxUSE_RICHEDIT2
2381     if ( m_verRichEdit == 1 )
2382     {
2383         // this is the only thing the control is going to grok
2384         cf.cbSize = sizeof(CHARFORMAT);
2385     }
2386     else
2387 #endif
2388     {
2389         // CHARFORMAT or CHARFORMAT2
2390         cf.cbSize = sizeof(cf);
2391     }
2392
2393     if ( style.HasFont() )
2394     {
2395         // VZ: CFM_CHARSET doesn't seem to do anything at all in RichEdit 2.0
2396         //     but using it doesn't seem to hurt neither so leaving it for now
2397
2398         cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET |
2399                      CFM_ITALIC | CFM_BOLD | CFM_UNDERLINE;
2400
2401         // fill in data from LOGFONT but recalculate lfHeight because we need
2402         // the real height in twips and not the negative number which
2403         // wxFillLogFont() returns (this is correct in general and works with
2404         // the Windows font mapper, but not here)
2405
2406         wxFont font(style.GetFont());
2407
2408         LOGFONT lf;
2409         wxFillLogFont(&lf, &font);
2410         cf.yHeight = 20*font.GetPointSize(); // 1 pt = 20 twips
2411         cf.bCharSet = lf.lfCharSet;
2412         cf.bPitchAndFamily = lf.lfPitchAndFamily;
2413         wxStrncpy( cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName) );
2414
2415         // also deal with underline/italic/bold attributes: note that we must
2416         // always set CFM_ITALIC &c bits in dwMask, even if we don't set the
2417         // style to allow clearing it
2418         if ( lf.lfItalic )
2419         {
2420             cf.dwEffects |= CFE_ITALIC;
2421         }
2422
2423         if ( lf.lfWeight == FW_BOLD )
2424         {
2425             cf.dwEffects |= CFE_BOLD;
2426         }
2427
2428         if ( lf.lfUnderline )
2429         {
2430             cf.dwEffects |= CFE_UNDERLINE;
2431         }
2432
2433         // strikeout fonts are not supported by wxWidgets
2434     }
2435
2436     if ( style.HasTextColour() )
2437     {
2438         cf.dwMask |= CFM_COLOR;
2439         cf.crTextColor = wxColourToRGB(style.GetTextColour());
2440     }
2441
2442 #if wxUSE_RICHEDIT2
2443     if ( m_verRichEdit != 1 && style.HasBackgroundColour() )
2444     {
2445         cf.dwMask |= CFM_BACKCOLOR;
2446         cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
2447     }
2448 #endif // wxUSE_RICHEDIT2
2449
2450     // do format the selection
2451     bool ok = ::SendMessage(GetHwnd(), EM_SETCHARFORMAT,
2452                             SCF_SELECTION, (LPARAM)&cf) != 0;
2453     if ( !ok )
2454     {
2455         wxLogDebug(_T("SendMessage(EM_SETCHARFORMAT, SCF_SELECTION) failed"));
2456     }
2457
2458     // now do the paragraph formatting
2459     PARAFORMAT2 pf;
2460     wxZeroMemory(pf);
2461     // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2462     // PARAFORMAT in that case
2463 #if wxUSE_RICHEDIT2
2464     if ( m_verRichEdit == 1 )
2465     {
2466         // this is the only thing the control is going to grok
2467         pf.cbSize = sizeof(PARAFORMAT);
2468     }
2469     else
2470 #endif
2471     {
2472         // PARAFORMAT or PARAFORMAT2
2473         pf.cbSize = sizeof(pf);
2474     }
2475
2476     if (style.HasAlignment())
2477     {
2478         pf.dwMask |= PFM_ALIGNMENT;
2479         if (style.GetAlignment() == wxTEXT_ALIGNMENT_RIGHT)
2480             pf.wAlignment = PFA_RIGHT;
2481         else if (style.GetAlignment() == wxTEXT_ALIGNMENT_CENTRE)
2482             pf.wAlignment = PFA_CENTER;
2483         else if (style.GetAlignment() == wxTEXT_ALIGNMENT_JUSTIFIED)
2484             pf.wAlignment = PFA_JUSTIFY;
2485         else
2486             pf.wAlignment = PFA_LEFT;
2487     }
2488
2489     if (style.HasLeftIndent())
2490     {
2491         pf.dwMask |= PFM_STARTINDENT | PFM_OFFSET;
2492
2493         // Convert from 1/10 mm to TWIPS
2494         pf.dxStartIndent = (int) (((double) style.GetLeftIndent()) * mm2twips / 10.0) ;
2495         pf.dxOffset = (int) (((double) style.GetLeftSubIndent()) * mm2twips / 10.0) ;
2496     }
2497
2498     if (style.HasRightIndent())
2499     {
2500         pf.dwMask |= PFM_RIGHTINDENT;
2501
2502         // Convert from 1/10 mm to TWIPS
2503         pf.dxRightIndent = (int) (((double) style.GetRightIndent()) * mm2twips / 10.0) ;
2504     }
2505
2506     if (style.HasTabs())
2507     {
2508         pf.dwMask |= PFM_TABSTOPS;
2509
2510         const wxArrayInt& tabs = style.GetTabs();
2511
2512         pf.cTabCount = (SHORT)wxMin(tabs.GetCount(), MAX_TAB_STOPS);
2513         size_t i;
2514         for (i = 0; i < (size_t) pf.cTabCount; i++)
2515         {
2516             // Convert from 1/10 mm to TWIPS
2517             pf.rgxTabs[i] = (int) (((double) tabs[i]) * mm2twips / 10.0) ;
2518         }
2519     }
2520
2521 #if wxUSE_RICHEDIT2
2522     if ( m_verRichEdit > 1 )
2523     {
2524         if ( wxTheApp->GetLayoutDirection() == wxLayout_RightToLeft )
2525         {
2526             // Use RTL paragraphs in RTL mode to get proper layout
2527             pf.dwMask |= PFM_RTLPARA;
2528             pf.wEffects |= PFE_RTLPARA;
2529         }
2530     }
2531 #endif // wxUSE_RICHEDIT2
2532
2533     if ( pf.dwMask )
2534     {
2535         // do format the selection
2536         bool ok = ::SendMessage(GetHwnd(), EM_SETPARAFORMAT,
2537                                 0, (LPARAM) &pf) != 0;
2538         if ( !ok )
2539         {
2540             wxLogDebug(_T("SendMessage(EM_SETPARAFORMAT, 0) failed"));
2541         }
2542     }
2543
2544     if ( changeSel )
2545     {
2546         // restore the original selection
2547         DoSetSelection(startOld, endOld, SetSel_NoScroll);
2548     }
2549
2550     return ok;
2551 }
2552
2553 bool wxTextCtrl::SetDefaultStyle(const wxTextAttr& style)
2554 {
2555     if ( !wxTextCtrlBase::SetDefaultStyle(style) )
2556         return false;
2557
2558     if ( IsEditable() )
2559     {
2560         // we have to do this or the style wouldn't apply for the text typed by
2561         // the user
2562         wxTextPos posLast = GetLastPosition();
2563         SetStyle(posLast, posLast, m_defaultStyle);
2564     }
2565
2566     return true;
2567 }
2568
2569 bool wxTextCtrl::GetStyle(long position, wxTextAttr& style)
2570 {
2571     if ( !IsRich() )
2572     {
2573         // can't do it with normal text control
2574         return false;
2575     }
2576
2577     // initialize CHARFORMAT struct
2578 #if wxUSE_RICHEDIT2
2579     CHARFORMAT2 cf;
2580 #else
2581     CHARFORMAT cf;
2582 #endif
2583
2584     wxZeroMemory(cf);
2585
2586     // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2587     // CHARFORMAT in that case
2588 #if wxUSE_RICHEDIT2
2589     if ( m_verRichEdit == 1 )
2590     {
2591         // this is the only thing the control is going to grok
2592         cf.cbSize = sizeof(CHARFORMAT);
2593     }
2594     else
2595 #endif
2596     {
2597         // CHARFORMAT or CHARFORMAT2
2598         cf.cbSize = sizeof(cf);
2599     }
2600     // we can only change the format of the selection, so select the range we
2601     // want and restore the old selection later
2602     long startOld, endOld;
2603     GetSelection(&startOld, &endOld);
2604
2605     // but do we really have to change the selection?
2606     bool changeSel = position != startOld || position != endOld;
2607
2608     if ( changeSel )
2609     {
2610         DoSetSelection(position, position + 1, SetSel_NoScroll);
2611     }
2612
2613     // get the selection formatting
2614     (void) ::SendMessage(GetHwnd(), EM_GETCHARFORMAT,
2615                             SCF_SELECTION, (LPARAM)&cf) ;
2616
2617
2618     LOGFONT lf;
2619     lf.lfHeight = cf.yHeight;
2620     lf.lfWidth = 0;
2621     lf.lfCharSet = ANSI_CHARSET; // FIXME: how to get correct charset?
2622     lf.lfClipPrecision = 0;
2623     lf.lfEscapement = 0;
2624     wxStrcpy(lf.lfFaceName, cf.szFaceName);
2625
2626     //NOTE:  we _MUST_ set each of these values to _something_ since we
2627     //do not call wxZeroMemory on the LOGFONT lf
2628     if (cf.dwEffects & CFE_ITALIC)
2629         lf.lfItalic = TRUE;
2630     else
2631         lf.lfItalic = FALSE;
2632
2633     lf.lfOrientation = 0;
2634     lf.lfPitchAndFamily = cf.bPitchAndFamily;
2635     lf.lfQuality = 0;
2636
2637     if (cf.dwEffects & CFE_STRIKEOUT)
2638         lf.lfStrikeOut = TRUE;
2639     else
2640         lf.lfStrikeOut = FALSE;
2641
2642     if (cf.dwEffects & CFE_UNDERLINE)
2643         lf.lfUnderline = TRUE;
2644     else
2645         lf.lfUnderline = FALSE;
2646
2647     if (cf.dwEffects & CFE_BOLD)
2648         lf.lfWeight = FW_BOLD;
2649     else
2650         lf.lfWeight = FW_NORMAL;
2651
2652     wxFont font = wxCreateFontFromLogFont(& lf);
2653     if (font.Ok())
2654     {
2655         style.SetFont(font);
2656     }
2657     style.SetTextColour(wxColour(cf.crTextColor));
2658
2659 #if wxUSE_RICHEDIT2
2660     if ( m_verRichEdit != 1 )
2661     {
2662         // cf.dwMask |= CFM_BACKCOLOR;
2663         style.SetBackgroundColour(wxColour(cf.crBackColor));
2664     }
2665 #endif // wxUSE_RICHEDIT2
2666
2667     // now get the paragraph formatting
2668     PARAFORMAT2 pf;
2669     wxZeroMemory(pf);
2670     // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2671     // PARAFORMAT in that case
2672 #if wxUSE_RICHEDIT2
2673     if ( m_verRichEdit == 1 )
2674     {
2675         // this is the only thing the control is going to grok
2676         pf.cbSize = sizeof(PARAFORMAT);
2677     }
2678     else
2679 #endif
2680     {
2681         // PARAFORMAT or PARAFORMAT2
2682         pf.cbSize = sizeof(pf);
2683     }
2684
2685     // do format the selection
2686     (void) ::SendMessage(GetHwnd(), EM_GETPARAFORMAT, 0, (LPARAM) &pf) ;
2687
2688     style.SetLeftIndent( (int) ((double) pf.dxStartIndent * twips2mm * 10.0), (int) ((double) pf.dxOffset * twips2mm * 10.0) );
2689     style.SetRightIndent( (int) ((double) pf.dxRightIndent * twips2mm * 10.0) );
2690
2691     if (pf.wAlignment == PFA_CENTER)
2692         style.SetAlignment(wxTEXT_ALIGNMENT_CENTRE);
2693     else if (pf.wAlignment == PFA_RIGHT)
2694         style.SetAlignment(wxTEXT_ALIGNMENT_RIGHT);
2695     else if (pf.wAlignment == PFA_JUSTIFY)
2696         style.SetAlignment(wxTEXT_ALIGNMENT_JUSTIFIED);
2697     else
2698         style.SetAlignment(wxTEXT_ALIGNMENT_LEFT);
2699
2700     wxArrayInt tabStops;
2701     size_t i;
2702     for (i = 0; i < (size_t) pf.cTabCount; i++)
2703     {
2704         tabStops.Add( (int) ((double) (pf.rgxTabs[i] & 0xFFFF) * twips2mm * 10.0) );
2705     }
2706
2707     if ( changeSel )
2708     {
2709         // restore the original selection
2710         DoSetSelection(startOld, endOld, SetSel_NoScroll);
2711     }
2712
2713     return true;
2714 }
2715
2716 // ----------------------------------------------------------------------------
2717 // wxRichEditModule
2718 // ----------------------------------------------------------------------------
2719
2720 static const HINSTANCE INVALID_HINSTANCE = (HINSTANCE)-1;
2721
2722 bool wxRichEditModule::OnInit()
2723 {
2724     // don't do anything - we will load it when needed
2725     return true;
2726 }
2727
2728 void wxRichEditModule::OnExit()
2729 {
2730     for ( size_t i = 0; i < WXSIZEOF(ms_hRichEdit); i++ )
2731     {
2732         if ( ms_hRichEdit[i] && ms_hRichEdit[i] != INVALID_HINSTANCE )
2733         {
2734             ::FreeLibrary(ms_hRichEdit[i]);
2735             ms_hRichEdit[i] = NULL;
2736         }
2737     }
2738 #if wxUSE_INKEDIT
2739     if (ms_inkEditLib.IsLoaded())
2740         ms_inkEditLib.Unload();
2741 #endif
2742 }
2743
2744 /* static */
2745 bool wxRichEditModule::Load(Version version)
2746 {
2747     if ( ms_hRichEdit[version] == INVALID_HINSTANCE )
2748     {
2749         // we had already tried to load it and failed
2750         return false;
2751     }
2752
2753     if ( ms_hRichEdit[version] )
2754     {
2755         // we've already got this one
2756         return true;
2757     }
2758
2759     static const wxChar *dllnames[] =
2760     {
2761         _T("riched32"),
2762         _T("riched20"),
2763         _T("msftedit"),
2764     };
2765
2766     wxCOMPILE_TIME_ASSERT( WXSIZEOF(dllnames) == Version_Max,
2767                             RichEditDllNamesVersionsMismatch );
2768
2769     ms_hRichEdit[version] = ::LoadLibrary(dllnames[version]);
2770
2771     if ( !ms_hRichEdit[version] )
2772     {
2773         ms_hRichEdit[version] = INVALID_HINSTANCE;
2774
2775         return false;
2776     }
2777
2778     return true;
2779 }
2780
2781 #if wxUSE_INKEDIT
2782 // load the InkEdit library
2783 bool wxRichEditModule::LoadInkEdit()
2784 {
2785     static wxDynamicLibrary ms_inkEditLib;
2786     static bool             ms_inkEditLibLoadAttemped;
2787     if (ms_inkEditLibLoadAttemped)
2788         ms_inkEditLib.IsLoaded();
2789
2790     ms_inkEditLibLoadAttemped = true;
2791
2792     wxLogNull logNull;
2793     return ms_inkEditLib.Load(wxT("inked"));
2794 }
2795 #endif // wxUSE_INKEDIT
2796
2797
2798 #endif // wxUSE_RICHEDIT
2799
2800 #endif // wxUSE_TEXTCTRL && !(__SMARTPHONE__ && __WXWINCE__)