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 = 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     wxDECLARE_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_KEY_DOWN(wxTextCtrl::OnKeyDown)
 252     EVT_DROP_FILES(wxTextCtrl::OnDropFiles)
 253
 254 #if wxUSE_RICHEDIT
 255     EVT_CONTEXT_MENU(wxTextCtrl::OnContextMenu)
 256 #endif
 257
 258     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 259     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 260     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 261     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 262     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 263     EVT_MENU(wxID_CLEAR, wxTextCtrl::OnDelete)
 264     EVT_MENU(wxID_SELECTALL, wxTextCtrl::OnSelectAll)
 265
 266     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 267     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 268     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 269     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 270     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 271     EVT_UPDATE_UI(wxID_CLEAR, wxTextCtrl::OnUpdateDelete)
 272     EVT_UPDATE_UI(wxID_SELECTALL, wxTextCtrl::OnUpdateSelectAll)
 273
 274     EVT_SET_FOCUS(wxTextCtrl::OnSetFocus)
 275 END_EVENT_TABLE()
 276
 277 // ============================================================================
 278 // implementation
 279 // ============================================================================
 280
 281 // ----------------------------------------------------------------------------
 282 // creation
 283 // ----------------------------------------------------------------------------
 284
 285 void wxTextCtrl::Init()
 286 {
 287 #if wxUSE_RICHEDIT
 288     m_verRichEdit = 0;
 289 #endif // wxUSE_RICHEDIT
 290
 291 #if wxUSE_INKEDIT && wxUSE_RICHEDIT
 292     m_isInkEdit = 0;
 293 #endif
 294
 295     m_privateContextMenu = NULL;
 296     m_updatesCount = -1;
 297     m_isNativeCaretShown = true;
 298 }
 299
 300 wxTextCtrl::~wxTextCtrl()
 301 {
 302 #if wxUSE_DRAG_AND_DROP && wxUSE_RICHEDIT
 303     if ( m_dropTarget == wxRICHTEXT_DEFAULT_DROPTARGET )
 304     {
 305         // don't try to destroy this dummy pointer in the base class dtor
 306         m_dropTarget = NULL;
 307     }
 308 #endif // wxUSE_DRAG_AND_DROP && wxUSE_RICHEDIT
 309
 310     delete m_privateContextMenu;
 311 }
 312
 313 bool wxTextCtrl::Create(wxWindow *parent,
 314                         wxWindowID id,
 315                         const wxString& value,
 316                         const wxPoint& pos,
 317                         const wxSize& size,
 318                         long style,
 319                         const wxValidator& validator,
 320                         const wxString& name)
 321 {
 322     // base initialization
 323     if ( !CreateControl(parent, id, pos, size, style, validator, name) )
 324         return false;
 325
 326     if ( !MSWCreateText(value, pos, size) )
 327         return false;
 328
 329 #if wxUSE_DRAG_AND_DROP && wxUSE_RICHEDIT
 330     if ( IsRich() )
 331     {
 332         // rich text controls have a default associated drop target which
 333         // allows them to receive (rich) text dropped on them, which is nice,
 334         // but prevents us from associating a user-defined drop target with
 335         // them as we need to unregister the old one first
 336         //
 337         // to make it work, we set m_dropTarget to this special value initially
 338         // and check for it in our SetDropTarget()
 339         m_dropTarget = wxRICHTEXT_DEFAULT_DROPTARGET;
 340     }
 341 #endif // wxUSE_DRAG_AND_DROP && wxUSE_RICHEDIT
 342
 343     return true;
 344 }
 345
 346 // returns true if the platform should explicitly apply a theme border
 347 bool wxTextCtrl::CanApplyThemeBorder() const
 348 {
 349 #ifdef __WXWINCE__
 350     return false;
 351 #else
 352     // Standard text control already handles theming
 353     return ((GetWindowStyle() & (wxTE_RICH|wxTE_RICH2)) != 0);
 354 #endif
 355 }
 356
 357 bool wxTextCtrl::MSWCreateText(const wxString& value,
 358                                const wxPoint& pos,
 359                                const wxSize& size)
 360 {
 361     // translate wxWin style flags to MSW ones
 362     WXDWORD msStyle = MSWGetCreateWindowFlags();
 363
 364     // do create the control - either an EDIT or RICHEDIT
 365     wxString windowClass = wxT("EDIT");
 366
 367 #if defined(__POCKETPC__) || defined(__SMARTPHONE__)
 368     // A control that capitalizes the first letter
 369     if ( HasFlag(wxTE_CAPITALIZE) )
 370         windowClass = wxT("CAPEDIT");
 371 #endif
 372
 373 #if wxUSE_RICHEDIT
 374     if ( m_windowStyle & wxTE_AUTO_URL )
 375     {
 376         // automatic URL detection only works in RichEdit 2.0+
 377         m_windowStyle |= wxTE_RICH2;
 378     }
 379
 380     if ( m_windowStyle & wxTE_RICH2 )
 381     {
 382         // using richedit 2.0 implies using wxTE_RICH
 383         m_windowStyle |= wxTE_RICH;
 384     }
 385
 386     // we need to load the richedit DLL before creating the rich edit control
 387     if ( m_windowStyle & wxTE_RICH )
 388     {
 389         // versions 2.0, 3.0 and 4.1 of rich edit are mostly compatible with
 390         // each other but not with version 1.0, so we have separate flags for
 391         // the version 1.0 and the others (and so m_verRichEdit may be 0 (plain
 392         // EDIT control), 1 for version 1.0 or 2 for any higher version)
 393         //
 394         // notice that 1.0 has no Unicode support at all so in Unicode build we
 395         // must use another version
 396
 397 #if wxUSE_UNICODE
 398         m_verRichEdit = 2;
 399 #else // !wxUSE_UNICODE
 400         m_verRichEdit = m_windowStyle & wxTE_RICH2 ? 2 : 1;
 401 #endif // wxUSE_UNICODE/!wxUSE_UNICODE
 402
 403 #if wxUSE_INKEDIT
 404         // First test if we can load an ink edit control. Normally, all edit
 405         // controls will be made ink edit controls if a tablet environment is
 406         // found (or if msw.inkedit != 0 and the InkEd.dll is present).
 407         // However, an application can veto ink edit controls by either specifying
 408         // msw.inkedit = 0 or by removing wxTE_RICH[2] from the style.
 409         //
 410         if ((wxSystemSettings::HasFeature(wxSYS_TABLET_PRESENT) || wxSystemOptions::GetOptionInt(wxT("msw.inkedit")) != 0) &&
 411             !(wxSystemOptions::HasOption(wxT("msw.inkedit")) && wxSystemOptions::GetOptionInt(wxT("msw.inkedit")) == 0))
 412         {
 413             if (wxRichEditModule::LoadInkEdit())
 414             {
 415                 windowClass = INKEDIT_CLASS;
 416
 417 #if wxUSE_INKEDIT && wxUSE_RICHEDIT
 418                 m_isInkEdit = 1;
 419 #endif
 420
 421                 // Fake rich text version for other calls
 422                 m_verRichEdit = 2;
 423             }
 424         }
 425 #endif
 426
 427         if (!IsInkEdit())
 428         {
 429             if ( m_verRichEdit == 2 )
 430             {
 431                 if ( wxRichEditModule::Load(wxRichEditModule::Version_41) )
 432                 {
 433                     // yes, class name for version 4.1 really is 5.0
 434                     windowClass = _T("RICHEDIT50W");
 435                 }
 436                 else if ( wxRichEditModule::Load(wxRichEditModule::Version_2or3) )
 437                 {
 438                     windowClass = _T("RichEdit20")
 439 #if wxUSE_UNICODE
 440                                 _T("W");
 441 #else // ANSI
 442                                 _T("A");
 443 #endif // Unicode/ANSI
 444                 }
 445                 else // failed to load msftedit.dll and riched20.dll
 446                 {
 447                     m_verRichEdit = 1;
 448                 }
 449             }
 450
 451             if ( m_verRichEdit == 1 )
 452             {
 453                 if ( wxRichEditModule::Load(wxRichEditModule::Version_1) )
 454                 {
 455                     windowClass = _T("RICHEDIT");
 456                 }
 457                 else // failed to load any richedit control DLL
 458                 {
 459                     // only give the error msg once if the DLL can't be loaded
 460                     static bool s_errorGiven = false; // MT ok as only used by GUI
 461
 462                     if ( !s_errorGiven )
 463                     {
 464                         wxLogError(_("Impossible to create a rich edit control, using simple text control instead. Please reinstall riched32.dll"));
 465
 466                         s_errorGiven = true;
 467                     }
 468
 469                     m_verRichEdit = 0;
 470                 }
 471             }
 472         } // !useInkEdit
 473     }
 474 #endif // wxUSE_RICHEDIT
 475
 476     // we need to turn '\n's into "\r\n"s for the multiline controls
 477     wxString valueWin;
 478     if ( m_windowStyle & wxTE_MULTILINE )
 479     {
 480         valueWin = wxTextFile::Translate(value, wxTextFileType_Dos);
 481     }
 482     else // single line
 483     {
 484         valueWin = value;
 485     }
 486
 487     // suppress events sent during control creation: we're called either from
 488     // the ctor and then we shouldn't generate any events for compatibility
 489     // with the other ports, or from SetWindowStyleFlag() and then we shouldn't
 490     // generate the events because our text doesn't really change, the fact
 491     // that we (sometimes) need to recreate the control is just an
 492     // implementation detail
 493     m_updatesCount = -2;
 494
 495     if ( !MSWCreateControl(windowClass.wx_str(), msStyle, pos, size, valueWin) )
 496         return false;
 497
 498     m_updatesCount = -1;
 499
 500 #if wxUSE_RICHEDIT
 501     if (IsRich())
 502     {
 503 #if wxUSE_INKEDIT
 504         if (IsInkEdit())
 505         {
 506             // Pass IEM_InsertText (0) as wParam, in order to have the ink always
 507             // converted to text.
 508             ::SendMessage(GetHwnd(), EM_SETINKINSERTMODE, 0, 0);
 509
 510             // Make sure the mouse can be used for input
 511             ::SendMessage(GetHwnd(), EM_SETUSEMOUSEFORINPUT, 1, 0);
 512         }
 513 #endif
 514
 515         // enable the events we're interested in: we want to get EN_CHANGE as
 516         // for the normal controls
 517         LPARAM mask = ENM_CHANGE;
 518
 519         if (GetRichVersion() == 1 && !IsInkEdit())
 520         {
 521             // we also need EN_MSGFILTER for richedit 1.0 for the reasons
 522             // explained in its handler
 523            mask |= ENM_MOUSEEVENTS;
 524
 525            // we also need to force the appearance of the vertical scrollbar
 526            // initially as otherwise the control doesn't refresh correctly
 527            // after resize: but once the vertical scrollbar had been shown
 528            // (even if it's subsequently hidden) it does
 529            //
 530            // this is clearly a bug and for now it has been only noticed under
 531            // Windows XP, so if we're sure it works correctly under other
 532            // systems we could do this only for XP
 533            SetSize(-1, 1); // 1 is small enough to force vert scrollbar
 534            SetInitialSize(size);
 535         }
 536         else if ( m_windowStyle & wxTE_AUTO_URL )
 537         {
 538             mask |= ENM_LINK;
 539
 540             ::SendMessage(GetHwnd(), EM_AUTOURLDETECT, TRUE, 0);
 541         }
 542
 543         ::SendMessage(GetHwnd(), EM_SETEVENTMASK, 0, mask);
 544     }
 545 #endif // wxUSE_RICHEDIT
 546
 547 #ifndef __WXWINCE__
 548     // Without this, if we pass the size in the constructor and then don't change it,
 549     // the themed borders will be drawn incorrectly.
 550     SetWindowPos(GetHwnd(), NULL, 0, 0, 0, 0,
 551                 SWP_NOZORDER|SWP_NOMOVE|SWP_NOSIZE|SWP_NOACTIVATE|
 552                 SWP_FRAMECHANGED);
 553 #endif
 554
 555     return true;
 556 }
 557
 558 // Make sure the window style (etc.) reflects the HWND style (roughly)
 559 void wxTextCtrl::AdoptAttributesFromHWND()
 560 {
 561     wxWindow::AdoptAttributesFromHWND();
 562
 563     HWND hWnd = GetHwnd();
 564     long style = ::GetWindowLong(hWnd, GWL_STYLE);
 565
 566     // retrieve the style to see whether this is an edit or richedit ctrl
 567 #if wxUSE_RICHEDIT
 568     wxString classname = wxGetWindowClass(GetHWND());
 569
 570     if ( classname.IsSameAs(_T("EDIT"), false /* no case */) )
 571     {
 572         m_verRichEdit = 0;
 573     }
 574     else // rich edit?
 575     {
 576         wxChar c;
 577         if ( wxSscanf(classname, _T("RichEdit%d0%c"), &m_verRichEdit, &c) != 2 )
 578         {
 579             wxLogDebug(_T("Unknown edit control '%s'."), classname.c_str());
 580
 581             m_verRichEdit = 0;
 582         }
 583     }
 584 #endif // wxUSE_RICHEDIT
 585
 586     if (style & ES_MULTILINE)
 587         m_windowStyle |= wxTE_MULTILINE;
 588     if (style & ES_PASSWORD)
 589         m_windowStyle |= wxTE_PASSWORD;
 590     if (style & ES_READONLY)
 591         m_windowStyle |= wxTE_READONLY;
 592     if (style & ES_WANTRETURN)
 593         m_windowStyle |= wxTE_PROCESS_ENTER;
 594     if (style & ES_CENTER)
 595         m_windowStyle |= wxTE_CENTRE;
 596     if (style & ES_RIGHT)
 597         m_windowStyle |= wxTE_RIGHT;
 598 }
 599
 600 WXDWORD wxTextCtrl::MSWGetStyle(long style, WXDWORD *exstyle) const
 601 {
 602     long msStyle = wxControl::MSWGetStyle(style, exstyle);
 603
 604     // styles which we always add by default
 605     if ( style & wxTE_MULTILINE )
 606     {
 607         msStyle |= ES_MULTILINE | ES_WANTRETURN;
 608         if ( !(style & wxTE_NO_VSCROLL) )
 609         {
 610             // always adjust the vertical scrollbar automatically if we have it
 611             msStyle |= WS_VSCROLL | ES_AUTOVSCROLL;
 612
 613 #if wxUSE_RICHEDIT
 614             // we have to use this style for the rich edit controls because
 615             // without it the vertical scrollbar never appears at all in
 616             // richedit 3.0 because of our ECO_NOHIDESEL hack (search for it)
 617             if ( style & wxTE_RICH2 )
 618             {
 619                 msStyle |= ES_DISABLENOSCROLL;
 620             }
 621 #endif // wxUSE_RICHEDIT
 622         }
 623
 624         style |= wxTE_PROCESS_ENTER;
 625     }
 626     else // !multiline
 627     {
 628         // there is really no reason to not have this style for single line
 629         // text controls
 630         msStyle |= ES_AUTOHSCROLL;
 631     }
 632
 633     // note that wxTE_DONTWRAP is the same as wxHSCROLL so if we have a horz
 634     // scrollbar, there is no wrapping -- which makes sense
 635     if ( style & wxTE_DONTWRAP )
 636     {
 637         // automatically scroll the control horizontally as necessary
 638         //
 639         // NB: ES_AUTOHSCROLL is needed for richedit controls or they don't
 640         //     show horz scrollbar at all, even in spite of WS_HSCROLL, and as
 641         //     it doesn't seem to do any harm for plain edit controls, add it
 642         //     always
 643         msStyle |= WS_HSCROLL | ES_AUTOHSCROLL;
 644     }
 645
 646     if ( style & wxTE_READONLY )
 647         msStyle |= ES_READONLY;
 648
 649     if ( style & wxTE_PASSWORD )
 650         msStyle |= ES_PASSWORD;
 651
 652     if ( style & wxTE_NOHIDESEL )
 653         msStyle |= ES_NOHIDESEL;
 654
 655     // note that we can't do do "& wxTE_LEFT" as wxTE_LEFT == 0
 656     if ( style & wxTE_CENTRE )
 657         msStyle |= ES_CENTER;
 658     else if ( style & wxTE_RIGHT )
 659         msStyle |= ES_RIGHT;
 660     else
 661         msStyle |= ES_LEFT; // ES_LEFT is 0 as well but for consistency...
 662
 663     return msStyle;
 664 }
 665
 666 void wxTextCtrl::SetWindowStyleFlag(long style)
 667 {
 668     // changing the alignment of the control dynamically works under Win2003
 669     // (but not older Windows version: it seems to work under some versions of
 670     // XP but not other ones, and we have no way to determine it so be
 671     // conservative here) and only for plain EDIT controls (not RICH ones) and
 672     // we have to recreate the control to make it always work
 673     if ( IsRich() || wxGetWinVersion() < wxWinVersion_2003 )
 674     {
 675         const long alignMask = wxTE_LEFT | wxTE_CENTRE | wxTE_RIGHT;
 676         if ( (style & alignMask) != (GetWindowStyle() & alignMask) )
 677         {
 678             const wxString value = GetValue();
 679             const wxPoint pos = GetPosition();
 680             const wxSize size = GetSize();
 681
 682             // delete the old window
 683             HWND hwnd = GetHwnd();
 684             DissociateHandle();
 685             ::DestroyWindow(hwnd);
 686
 687             // create the new one with the updated flags
 688             m_windowStyle = style;
 689             MSWCreateText(value, pos, size);
 690
 691             // and make sure it has the same attributes as before
 692             if ( m_hasFont )
 693             {
 694                 // calling SetFont(m_font) would do nothing as the code would
 695                 // notice that the font didn't change, so force it to believe
 696                 // that it did
 697                 wxFont font = m_font;
 698                 m_font = wxNullFont;
 699                 SetFont(font);
 700             }
 701
 702             if ( m_hasFgCol )
 703             {
 704                 wxColour colFg = m_foregroundColour;
 705                 m_foregroundColour = wxNullColour;
 706                 SetForegroundColour(colFg);
 707             }
 708
 709             if ( m_hasBgCol )
 710             {
 711                 wxColour colBg = m_backgroundColour;
 712                 m_backgroundColour = wxNullColour;
 713                 SetBackgroundColour(colBg);
 714             }
 715
 716             // note that text styles are lost but this is probably not a big
 717             // problem: if you use styles, you probably don't use nor change
 718             // alignment flags anyhow
 719
 720             return;
 721         }
 722     }
 723
 724 #if wxUSE_RICHEDIT
 725     // we have to deal with some styles separately because they can't be
 726     // changed by simply calling SetWindowLong(GWL_STYLE) but can be changed
 727     // using richedit-specific EM_SETOPTIONS
 728     if ( IsRich() &&
 729             ((style & wxTE_NOHIDESEL) != (GetWindowStyle() & wxTE_NOHIDESEL)) )
 730     {
 731         bool set = (style & wxTE_NOHIDESEL) != 0;
 732
 733         ::SendMessage(GetHwnd(), EM_SETOPTIONS, set ? ECOOP_OR : ECOOP_AND,
 734                       set ? ECO_NOHIDESEL : ~ECO_NOHIDESEL);
 735     }
 736 #endif // wxUSE_RICHEDIT
 737
 738     wxControl::SetWindowStyleFlag(style);
 739 }
 740
 741 // ----------------------------------------------------------------------------
 742 // set/get the controls text
 743 // ----------------------------------------------------------------------------
 744
 745 bool wxTextCtrl::IsEmpty() const
 746 {
 747     // this is an optimization for multiline controls containing a lot of text
 748     if ( IsMultiLine() && GetNumberOfLines() != 1 )
 749         return false;
 750
 751     return wxTextCtrlBase::IsEmpty();
 752 }
 753
 754 wxString wxTextCtrl::GetValue() const
 755 {
 756     // range 0..-1 is special for GetRange() and means to retrieve all text
 757     return GetRange(0, -1);
 758 }
 759
 760 wxString wxTextCtrl::GetRange(long from, long to) const
 761 {
 762     wxString str;
 763
 764     if ( from >= to && to != -1 )
 765     {
 766         // nothing to retrieve
 767         return str;
 768     }
 769
 770 #if wxUSE_RICHEDIT
 771     if ( IsRich() )
 772     {
 773         int len = GetWindowTextLength(GetHwnd());
 774         if ( len > from )
 775         {
 776             if ( to == -1 )
 777                 to = len;
 778
 779 #if !wxUSE_UNICODE
 780             // we must use EM_STREAMOUT if we don't want to lose all characters
 781             // not representable in the current character set (EM_GETTEXTRANGE
 782             // simply replaces them with question marks...)
 783             if ( GetRichVersion() > 1 )
 784             {
 785                 // we must have some encoding, otherwise any 8bit chars in the
 786                 // control are simply *lost* (replaced by '?')
 787                 wxFontEncoding encoding = wxFONTENCODING_SYSTEM;
 788
 789                 wxFont font = m_defaultStyle.GetFont();
 790                 if ( !font.Ok() )
 791                     font = GetFont();
 792
 793                 if ( font.Ok() )
 794                 {
 795                    encoding = font.GetEncoding();
 796                 }
 797
 798 #if wxUSE_INTL
 799                 if ( encoding == wxFONTENCODING_SYSTEM )
 800                 {
 801                     encoding = wxLocale::GetSystemEncoding();
 802                 }
 803 #endif // wxUSE_INTL
 804
 805                 if ( encoding == wxFONTENCODING_SYSTEM )
 806                 {
 807                     encoding = wxFONTENCODING_ISO8859_1;
 808                 }
 809
 810                 str = StreamOut(encoding);
 811
 812                 if ( !str.empty() )
 813                 {
 814                     // we have to manually extract the required part, luckily
 815                     // this is easy in this case as EOL characters in str are
 816                     // just LFs because we remove CRs in wxRichEditStreamOut
 817                     str = str.Mid(from, to - from);
 818                 }
 819             }
 820
 821             // StreamOut() wasn't used or failed, try to do it in normal way
 822             if ( str.empty() )
 823 #endif // !wxUSE_UNICODE
 824             {
 825                 // alloc one extra WORD as needed by the control
 826                 wxStringBuffer tmp(str, ++len);
 827                 wxChar *p = tmp;
 828
 829                 TEXTRANGE textRange;
 830                 textRange.chrg.cpMin = from;
 831                 textRange.chrg.cpMax = to;
 832                 textRange.lpstrText = p;
 833
 834                 (void)::SendMessage(GetHwnd(), EM_GETTEXTRANGE,
 835                                     0, (LPARAM)&textRange);
 836
 837                 if ( m_verRichEdit > 1 )
 838                 {
 839                     // RichEdit 2.0 uses just CR ('\r') for the
 840                     // newlines which is neither Unix nor Windows
 841                     // style - convert it to something reasonable
 842                     for ( ; *p; p++ )
 843                     {
 844                         if ( *p == _T('\r') )
 845                             *p = _T('\n');
 846                     }
 847                 }
 848             }
 849
 850             if ( m_verRichEdit == 1 )
 851             {
 852                 // convert to the canonical form - see comment below
 853                 str = wxTextFile::Translate(str, wxTextFileType_Unix);
 854             }
 855         }
 856         //else: no text at all, leave the string empty
 857     }
 858     else
 859 #endif // wxUSE_RICHEDIT
 860     {
 861         // retrieve all text: wxTextEntry method works even for multiline
 862         // controls and must be used for single line ones to account for hints
 863         str = wxTextEntry::GetValue();
 864
 865         // need only a range?
 866         if ( from < to )
 867         {
 868             str = str.Mid(from, to - from);
 869         }
 870
 871         // WM_GETTEXT uses standard DOS CR+LF (\r\n) convention - convert to the
 872         // canonical one (same one as above) for consistency with the other kinds
 873         // of controls and, more importantly, with the other ports
 874         str = wxTextFile::Translate(str, wxTextFileType_Unix);
 875     }
 876
 877     return str;
 878 }
 879
 880 void wxTextCtrl::DoSetValue(const wxString& value, int flags)
 881 {
 882     // if the text is long enough, it's faster to just set it instead of first
 883     // comparing it with the old one (chances are that it will be different
 884     // anyhow, this comparison is there to avoid flicker for small single-line
 885     // edit controls mostly)
 886     if ( (value.length() > 0x400) || (value != DoGetValue()) )
 887     {
 888         DoWriteText(value, flags /* doesn't include SelectionOnly here */);
 889
 890         // mark the control as being not dirty - we changed its text, not the
 891         // user
 892         DiscardEdits();
 893
 894         // for compatibility, don't move the cursor when doing SetValue()
 895         SetInsertionPoint(0);
 896     }
 897     else // same text
 898     {
 899         // still reset the modified flag even if the value didn't really change
 900         // because now it comes from the program and not the user (and do it
 901         // before generating the event so that the event handler could get the
 902         // expected value from IsModified())
 903         DiscardEdits();
 904
 905         // still send an event for consistency
 906         if (flags & SetValue_SendEvent)
 907             SendUpdateEvent();
 908     }
 909 }
 910
 911 #if wxUSE_RICHEDIT && (!wxUSE_UNICODE || wxUSE_UNICODE_MSLU)
 912
 913 // TODO: using memcpy() would improve performance a lot for big amounts of text
 914
 915 DWORD CALLBACK
 916 wxRichEditStreamIn(DWORD_PTR dwCookie, BYTE *buf, LONG cb, LONG *pcb)
 917 {
 918     *pcb = 0;
 919
 920     const wchar_t ** const ppws = (const wchar_t **)dwCookie;
 921
 922     wchar_t *wbuf = (wchar_t *)buf;
 923     const wchar_t *wpc = *ppws;
 924     while ( cb && *wpc )
 925     {
 926         *wbuf++ = *wpc++;
 927
 928         cb -= sizeof(wchar_t);
 929         (*pcb) += sizeof(wchar_t);
 930     }
 931
 932     *ppws = wpc;
 933
 934     return 0;
 935 }
 936
 937 // helper struct used to pass parameters from wxTextCtrl to wxRichEditStreamOut
 938 struct wxStreamOutData
 939 {
 940     wchar_t *wpc;
 941     size_t len;
 942 };
 943
 944 DWORD CALLBACK
 945 wxRichEditStreamOut(DWORD_PTR dwCookie, BYTE *buf, LONG cb, LONG *pcb)
 946 {
 947     *pcb = 0;
 948
 949     wxStreamOutData *data = (wxStreamOutData *)dwCookie;
 950
 951     const wchar_t *wbuf = (const wchar_t *)buf;
 952     wchar_t *wpc = data->wpc;
 953     while ( cb )
 954     {
 955         wchar_t wch = *wbuf++;
 956
 957         // turn "\r\n" into "\n" on the fly
 958         if ( wch != L'\r' )
 959             *wpc++ = wch;
 960         else
 961             data->len--;
 962
 963         cb -= sizeof(wchar_t);
 964         (*pcb) += sizeof(wchar_t);
 965     }
 966
 967     data->wpc = wpc;
 968
 969     return 0;
 970 }
 971
 972
 973 #if wxUSE_UNICODE_MSLU
 974     #define UNUSED_IF_MSLU(param)
 975 #else
 976     #define UNUSED_IF_MSLU(param) param
 977 #endif
 978
 979 bool
 980 wxTextCtrl::StreamIn(const wxString& value,
 981                      wxFontEncoding UNUSED_IF_MSLU(encoding),
 982                      bool selectionOnly)
 983 {
 984 #if wxUSE_UNICODE_MSLU
 985     const wchar_t *wpc = value.c_str();
 986 #else // !wxUSE_UNICODE_MSLU
 987     wxCSConv conv(encoding);
 988
 989     const size_t len = conv.MB2WC(NULL, value.mb_str(), value.length());
 990
 991     if (len == wxCONV_FAILED)
 992         return false;
 993
 994     wxWCharBuffer wchBuf(len); // allocates one extra character
 995     wchar_t *wpc = wchBuf.data();
 996
 997     conv.MB2WC(wpc, value.mb_str(), len + 1);
 998 #endif // wxUSE_UNICODE_MSLU
 999
1000     // finally, stream it in the control
1001     EDITSTREAM eds;
1002     wxZeroMemory(eds);
1003     eds.dwCookie = (DWORD_PTR)&wpc;
1004     // the cast below is needed for broken (very) old mingw32 headers
1005     eds.pfnCallback = (EDITSTREAMCALLBACK)wxRichEditStreamIn;
1006
1007     // same problem as in DoWriteText(): we can get multiple events here
1008     UpdatesCountFilter ucf(m_updatesCount);
1009
1010     ::SendMessage(GetHwnd(), EM_STREAMIN,
1011                   SF_TEXT |
1012                   SF_UNICODE |
1013                   (selectionOnly ? SFF_SELECTION : 0),
1014                   (LPARAM)&eds);
1015
1016     // It's okay for EN_UPDATE to not be sent if the selection is empty and
1017     // the text is empty, otherwise warn the programmer about it.
1018     wxASSERT_MSG( ucf.GotUpdate() || ( !HasSelection() && value.empty() ),
1019                   _T("EM_STREAMIN didn't send EN_UPDATE?") );
1020
1021     if ( eds.dwError )
1022     {
1023         wxLogLastError(_T("EM_STREAMIN"));
1024     }
1025
1026 #if !wxUSE_WCHAR_T
1027     free(wchBuf);
1028 #endif // !wxUSE_WCHAR_T
1029
1030     return true;
1031 }
1032
1033 #if !wxUSE_UNICODE_MSLU
1034
1035 wxString
1036 wxTextCtrl::StreamOut(wxFontEncoding encoding, bool selectionOnly) const
1037 {
1038     wxString out;
1039
1040     const int len = GetWindowTextLength(GetHwnd());
1041
1042 #if wxUSE_WCHAR_T
1043     wxWCharBuffer wchBuf(len);
1044     wchar_t *wpc = wchBuf.data();
1045 #else
1046     wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
1047     wchar_t *wpc = wchBuf;
1048 #endif
1049
1050     wxStreamOutData data;
1051     data.wpc = wpc;
1052     data.len = len;
1053
1054     EDITSTREAM eds;
1055     wxZeroMemory(eds);
1056     eds.dwCookie = (DWORD)&data;
1057     eds.pfnCallback = wxRichEditStreamOut;
1058
1059     ::SendMessage
1060       (
1061         GetHwnd(),
1062         EM_STREAMOUT,
1063         SF_TEXT | SF_UNICODE | (selectionOnly ? SFF_SELECTION : 0),
1064         (LPARAM)&eds
1065       );
1066
1067     if ( eds.dwError )
1068     {
1069         wxLogLastError(_T("EM_STREAMOUT"));
1070     }
1071     else // streamed out ok
1072     {
1073         // NUL-terminate the string because its length could have been
1074         // decreased by wxRichEditStreamOut
1075         *(wchBuf.data() + data.len) = L'\0';
1076
1077         // now convert to the given encoding (this is a possibly lossful
1078         // conversion but what else can we do)
1079         wxCSConv conv(encoding);
1080         size_t lenNeeded = conv.WC2MB(NULL, wchBuf, 0);
1081
1082         if ( lenNeeded != wxCONV_FAILED && lenNeeded++ )
1083         {
1084             conv.WC2MB(wxStringBuffer(out, lenNeeded), wchBuf, lenNeeded);
1085         }
1086     }
1087
1088 #if !wxUSE_WCHAR_T
1089     free(wchBuf);
1090 #endif // !wxUSE_WCHAR_T
1091
1092     return out;
1093 }
1094
1095 #endif // !wxUSE_UNICODE_MSLU
1096
1097 #endif // wxUSE_RICHEDIT
1098
1099 void wxTextCtrl::WriteText(const wxString& value)
1100 {
1101     DoWriteText(value);
1102 }
1103
1104 void wxTextCtrl::DoWriteText(const wxString& value, int flags)
1105 {
1106     bool selectionOnly = (flags & SetValue_SelectionOnly) != 0;
1107     wxString valueDos;
1108     if ( m_windowStyle & wxTE_MULTILINE )
1109         valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
1110     else
1111         valueDos = value;
1112
1113 #if wxUSE_RICHEDIT
1114     // there are several complications with the rich edit controls here
1115     bool done = false;
1116     if ( IsRich() )
1117     {
1118         // first, ensure that the new text will be in the default style
1119         if ( !m_defaultStyle.IsDefault() )
1120         {
1121             long start, end;
1122             GetSelection(&start, &end);
1123             SetStyle(start, end, m_defaultStyle);
1124         }
1125
1126 #if wxUSE_UNICODE_MSLU
1127         // RichEdit doesn't have Unicode version of EM_REPLACESEL on Win9x,
1128         // but EM_STREAMIN works
1129         if ( wxUsingUnicowsDll() && GetRichVersion() > 1 )
1130         {
1131            done = StreamIn(valueDos, wxFONTENCODING_SYSTEM, selectionOnly);
1132         }
1133 #endif // wxUSE_UNICODE_MSLU
1134
1135 #if !wxUSE_UNICODE
1136         // next check if the text we're inserting must be shown in a non
1137         // default charset -- this only works for RichEdit > 1.0
1138         if ( GetRichVersion() > 1 )
1139         {
1140             wxFont font = m_defaultStyle.GetFont();
1141             if ( !font.Ok() )
1142                 font = GetFont();
1143
1144             if ( font.Ok() )
1145             {
1146                wxFontEncoding encoding = font.GetEncoding();
1147                if ( encoding != wxFONTENCODING_SYSTEM )
1148                {
1149                    // we have to use EM_STREAMIN to force richedit control 2.0+
1150                    // to show any text in the non default charset -- otherwise
1151                    // it thinks it knows better than we do and always shows it
1152                    // in the default one
1153                    done = StreamIn(valueDos, encoding, selectionOnly);
1154                }
1155             }
1156         }
1157 #endif // !wxUSE_UNICODE
1158     }
1159
1160     if ( !done )
1161 #endif // wxUSE_RICHEDIT
1162     {
1163         // in some cases we get 2 EN_CHANGE notifications after the SendMessage
1164         // call (this happens for plain EDITs with EM_REPLACESEL and under some
1165         // -- undetermined -- conditions with rich edit) and sometimes we don't
1166         // get any events at all (plain EDIT with WM_SETTEXT), so ensure that
1167         // we generate exactly one of them by ignoring all but the first one in
1168         // SendUpdateEvent() and generating one ourselves if we hadn't got any
1169         // notifications from Windows
1170         if ( !(flags & SetValue_SendEvent) )
1171             m_updatesCount = -2;        // suppress any update event
1172
1173         UpdatesCountFilter ucf(m_updatesCount);
1174
1175         ::SendMessage(GetHwnd(), selectionOnly ? EM_REPLACESEL : WM_SETTEXT,
1176                       // EM_REPLACESEL takes 1 to indicate the operation should be redoable
1177                       selectionOnly ? 1 : 0, (LPARAM)valueDos.wx_str());
1178
1179         if ( !ucf.GotUpdate() && (flags & SetValue_SendEvent) )
1180         {
1181             SendUpdateEvent();
1182         }
1183     }
1184 }
1185
1186 void wxTextCtrl::AppendText(const wxString& text)
1187 {
1188     wxTextEntry::AppendText(text);
1189
1190 #if wxUSE_RICHEDIT
1191     // don't do this if we're frozen, saves some time
1192     if ( !IsFrozen() && IsMultiLine() && GetRichVersion() > 1 )
1193     {
1194         // setting the caret to the end and showing it simply doesn't work for
1195         // RichEdit 2.0 -- force it to still do what we want
1196         ::SendMessage(GetHwnd(), EM_LINESCROLL, 0, GetNumberOfLines());
1197     }
1198 #endif // wxUSE_RICHEDIT
1199 }
1200
1201 void wxTextCtrl::Clear()
1202 {
1203     ::SetWindowText(GetHwnd(), wxEmptyString);
1204
1205     if ( IsMultiLine() && !IsRich() )
1206     {
1207         // rich edit controls send EN_UPDATE from WM_SETTEXT handler themselves
1208         // but the normal ones don't -- make Clear() behaviour consistent by
1209         // always sending this event
1210         SendUpdateEvent();
1211     }
1212 }
1213
1214 #ifdef __WIN32__
1215
1216 bool wxTextCtrl::EmulateKeyPress(const wxKeyEvent& event)
1217 {
1218     SetFocus();
1219
1220     size_t lenOld = GetValue().length();
1221
1222     wxUint32 code = event.GetRawKeyCode();
1223     ::keybd_event((BYTE)code, 0, 0 /* key press */, 0);
1224     ::keybd_event((BYTE)code, 0, KEYEVENTF_KEYUP, 0);
1225
1226     // assume that any alphanumeric key changes the total number of characters
1227     // in the control - this should work in 99% of cases
1228     return GetValue().length() != lenOld;
1229 }
1230
1231 #endif // __WIN32__
1232
1233 // ----------------------------------------------------------------------------
1234 // Accessors
1235 // ----------------------------------------------------------------------------
1236
1237 void wxTextCtrl::SetInsertionPointEnd()
1238 {
1239     // we must not do anything if the caret is already there because calling
1240     // SetInsertionPoint() thaws the controls if Freeze() had been called even
1241     // if it doesn't actually move the caret anywhere and so the simple fact of
1242     // doing it results in horrible flicker when appending big amounts of text
1243     // to the control in a few chunks (see DoAddText() test in the text sample)
1244     const wxTextPos lastPosition = GetLastPosition();
1245     if ( GetInsertionPoint() == lastPosition )
1246     {
1247         return;
1248     }
1249
1250     SetInsertionPoint(lastPosition);
1251 }
1252
1253 long wxTextCtrl::GetInsertionPoint() const
1254 {
1255 #if wxUSE_RICHEDIT
1256     if ( IsRich() )
1257     {
1258         CHARRANGE range;
1259         range.cpMin = 0;
1260         range.cpMax = 0;
1261         ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
1262         return range.cpMin;
1263     }
1264 #endif // wxUSE_RICHEDIT
1265
1266     return wxTextEntry::GetInsertionPoint();
1267 }
1268
1269 wxTextPos wxTextCtrl::GetLastPosition() const
1270 {
1271     if ( IsMultiLine() )
1272     {
1273         int numLines = GetNumberOfLines();
1274         long posStartLastLine = XYToPosition(0, numLines - 1);
1275
1276         long lenLastLine = GetLengthOfLineContainingPos(posStartLastLine);
1277
1278         return posStartLastLine + lenLastLine;
1279     }
1280
1281     return wxTextEntry::GetLastPosition();
1282 }
1283
1284 // If the return values from and to are the same, there is no
1285 // selection.
1286 void wxTextCtrl::GetSelection(long *from, long *to) const
1287 {
1288 #if wxUSE_RICHEDIT
1289     if ( IsRich() )
1290     {
1291         CHARRANGE charRange;
1292         ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &charRange);
1293
1294         *from = charRange.cpMin;
1295         *to = charRange.cpMax;
1296     }
1297     else
1298 #endif // !wxUSE_RICHEDIT
1299     {
1300         wxTextEntry::GetSelection(from, to);
1301     }
1302 }
1303
1304 // ----------------------------------------------------------------------------
1305 // selection
1306 // ----------------------------------------------------------------------------
1307
1308 void wxTextCtrl::DoSetSelection(long from, long to, int flags)
1309 {
1310     HWND hWnd = GetHwnd();
1311
1312 #if wxUSE_RICHEDIT
1313     if ( IsRich() )
1314     {
1315         // if from and to are both -1, it means (in wxWidgets) that all text
1316         // should be selected, translate this into Windows convention
1317         if ( (from == -1) && (to == -1) )
1318         {
1319             from = 0;
1320         }
1321
1322         CHARRANGE range;
1323         range.cpMin = from;
1324         range.cpMax = to;
1325         ::SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM)&range);
1326     }
1327     else
1328 #endif // wxUSE_RICHEDIT
1329     {
1330         wxTextEntry::DoSetSelection(from, to, flags);
1331     }
1332
1333     if ( (flags & SetSel_Scroll) && !IsFrozen() )
1334     {
1335 #if wxUSE_RICHEDIT
1336         // richedit 3.0 (i.e. the version living in riched20.dll distributed
1337         // with Windows 2000 and beyond) doesn't honour EM_SCROLLCARET when
1338         // emulating richedit 2.0 unless the control has focus or ECO_NOHIDESEL
1339         // option is set (but it does work ok in richedit 1.0 mode...)
1340         //
1341         // so to make it work we either need to give focus to it here which
1342         // will probably create many problems (dummy focus events; window
1343         // containing the text control being brought to foreground
1344         // unexpectedly; ...) or to temporarily set ECO_NOHIDESEL which may
1345         // create other problems too -- and in fact it does because if we turn
1346         // on/off this style while appending the text to the control, the
1347         // vertical scrollbar never appears in it even if we append tons of
1348         // text and to work around this the only solution I found was to use
1349         // ES_DISABLENOSCROLL
1350         //
1351         // this is very ugly but I don't see any other way to make this work
1352         long style = 0;
1353         if ( GetRichVersion() > 1 )
1354         {
1355             if ( !HasFlag(wxTE_NOHIDESEL) )
1356             {
1357                 // setting ECO_NOHIDESEL also sets WS_VISIBLE and possibly
1358                 // others, remember the style so we can reset it later if needed
1359                 style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1360                 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1361                               ECOOP_OR, ECO_NOHIDESEL);
1362             }
1363             //else: everything is already ok
1364         }
1365 #endif // wxUSE_RICHEDIT
1366
1367         ::SendMessage(hWnd, EM_SCROLLCARET, 0, (LPARAM)0);
1368
1369 #if wxUSE_RICHEDIT
1370         // restore ECO_NOHIDESEL if we changed it
1371         if ( GetRichVersion() > 1 && !HasFlag(wxTE_NOHIDESEL) )
1372         {
1373             ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1374                           ECOOP_AND, ~ECO_NOHIDESEL);
1375             if ( style != ::GetWindowLong(GetHwnd(), GWL_STYLE) )
1376                 ::SetWindowLong(GetHwnd(), GWL_STYLE, style);
1377         }
1378 #endif // wxUSE_RICHEDIT
1379     }
1380 }
1381
1382 // ----------------------------------------------------------------------------
1383 // Working with files
1384 // ----------------------------------------------------------------------------
1385
1386 bool wxTextCtrl::DoLoadFile(const wxString& file, int fileType)
1387 {
1388     if ( wxTextCtrlBase::DoLoadFile(file, fileType) )
1389     {
1390         // update the size limit if needed
1391         AdjustSpaceLimit();
1392
1393         return true;
1394     }
1395
1396     return false;
1397 }
1398
1399 // ----------------------------------------------------------------------------
1400 // dirty status
1401 // ----------------------------------------------------------------------------
1402
1403 bool wxTextCtrl::IsModified() const
1404 {
1405     return ::SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0;
1406 }
1407
1408 void wxTextCtrl::MarkDirty()
1409 {
1410     ::SendMessage(GetHwnd(), EM_SETMODIFY, TRUE, 0);
1411 }
1412
1413 void wxTextCtrl::DiscardEdits()
1414 {
1415     ::SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0);
1416 }
1417
1418 // ----------------------------------------------------------------------------
1419 // Positions <-> coords
1420 // ----------------------------------------------------------------------------
1421
1422 int wxTextCtrl::GetNumberOfLines() const
1423 {
1424     return (int)::SendMessage(GetHwnd(), EM_GETLINECOUNT, 0, 0);
1425 }
1426
1427 long wxTextCtrl::XYToPosition(long x, long y) const
1428 {
1429     // This gets the char index for the _beginning_ of this line
1430     long charIndex = ::SendMessage(GetHwnd(), EM_LINEINDEX, y, 0);
1431
1432     return charIndex + x;
1433 }
1434
1435 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
1436 {
1437     HWND hWnd = GetHwnd();
1438
1439     // This gets the line number containing the character
1440     long lineNo;
1441 #if wxUSE_RICHEDIT
1442     if ( IsRich() )
1443     {
1444         lineNo = ::SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, pos);
1445     }
1446     else
1447 #endif // wxUSE_RICHEDIT
1448     {
1449         lineNo = ::SendMessage(hWnd, EM_LINEFROMCHAR, pos, 0);
1450     }
1451
1452     if ( lineNo == -1 )
1453     {
1454         // no such line
1455         return false;
1456     }
1457
1458     // This gets the char index for the _beginning_ of this line
1459     long charIndex = ::SendMessage(hWnd, EM_LINEINDEX, lineNo, 0);
1460     if ( charIndex == -1 )
1461     {
1462         return false;
1463     }
1464
1465     // The X position must therefore be the different between pos and charIndex
1466     if ( x )
1467         *x = pos - charIndex;
1468     if ( y )
1469         *y = lineNo;
1470
1471     return true;
1472 }
1473
1474 wxTextCtrlHitTestResult
1475 wxTextCtrl::HitTest(const wxPoint& pt, long *posOut) const
1476 {
1477     // first get the position from Windows
1478     LPARAM lParam;
1479
1480 #if wxUSE_RICHEDIT
1481     POINTL ptl;
1482     if ( IsRich() )
1483     {
1484         // for rich edit controls the position is passed iva the struct fields
1485         ptl.x = pt.x;
1486         ptl.y = pt.y;
1487         lParam = (LPARAM)&ptl;
1488     }
1489     else
1490 #endif // wxUSE_RICHEDIT
1491     {
1492         // for the plain ones, we are limited to 16 bit positions which are
1493         // combined in a single 32 bit value
1494         lParam = MAKELPARAM(pt.x, pt.y);
1495     }
1496
1497     LRESULT pos = ::SendMessage(GetHwnd(), EM_CHARFROMPOS, 0, lParam);
1498
1499     if ( pos == -1 )
1500     {
1501         // this seems to indicate an error...
1502         return wxTE_HT_UNKNOWN;
1503     }
1504
1505 #if wxUSE_RICHEDIT
1506     if ( !IsRich() )
1507 #endif // wxUSE_RICHEDIT
1508     {
1509         // for plain EDIT controls the higher word contains something else
1510         pos = LOWORD(pos);
1511     }
1512
1513
1514     // next determine where it is relatively to our point: EM_CHARFROMPOS
1515     // always returns the closest character but we need to be more precise, so
1516     // double check that we really are where it pretends
1517     POINTL ptReal;
1518
1519 #if wxUSE_RICHEDIT
1520     // FIXME: we need to distinguish between richedit 2 and 3 here somehow but
1521     //        we don't know how to do it
1522     if ( IsRich() )
1523     {
1524         ::SendMessage(GetHwnd(), EM_POSFROMCHAR, (WPARAM)&ptReal, pos);
1525     }
1526     else
1527 #endif // wxUSE_RICHEDIT
1528     {
1529         LRESULT lRc = ::SendMessage(GetHwnd(), EM_POSFROMCHAR, pos, 0);
1530
1531         if ( lRc == -1 )
1532         {
1533             // this is apparently returned when pos corresponds to the last
1534             // position
1535             ptReal.x =
1536             ptReal.y = 0;
1537         }
1538         else
1539         {
1540             ptReal.x = LOWORD(lRc);
1541             ptReal.y = HIWORD(lRc);
1542         }
1543     }
1544
1545     wxTextCtrlHitTestResult rc;
1546
1547     if ( pt.y > ptReal.y + GetCharHeight() )
1548         rc = wxTE_HT_BELOW;
1549     else if ( pt.x > ptReal.x + GetCharWidth() )
1550         rc = wxTE_HT_BEYOND;
1551     else
1552         rc = wxTE_HT_ON_TEXT;
1553
1554     if ( posOut )
1555         *posOut = pos;
1556
1557     return rc;
1558 }
1559
1560 // ----------------------------------------------------------------------------
1561 //
1562 // ----------------------------------------------------------------------------
1563
1564 void wxTextCtrl::ShowPosition(long pos)
1565 {
1566     HWND hWnd = GetHwnd();
1567
1568     // To scroll to a position, we pass the number of lines and characters
1569     // to scroll *by*. This means that we need to:
1570     // (1) Find the line position of the current line.
1571     // (2) Find the line position of pos.
1572     // (3) Scroll by (pos - current).
1573     // For now, ignore the horizontal scrolling.
1574
1575     // Is this where scrolling is relative to - the line containing the caret?
1576     // Or is the first visible line??? Try first visible line.
1577 //    int currentLineLineNo1 = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, -1, 0L);
1578
1579     int currentLineLineNo = (int)::SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, 0, 0);
1580
1581     int specifiedLineLineNo = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, pos, 0);
1582
1583     int linesToScroll = specifiedLineLineNo - currentLineLineNo;
1584
1585     if (linesToScroll != 0)
1586       ::SendMessage(hWnd, EM_LINESCROLL, 0, linesToScroll);
1587 }
1588
1589 long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const
1590 {
1591     return ::SendMessage(GetHwnd(), EM_LINELENGTH, pos, 0);
1592 }
1593
1594 int wxTextCtrl::GetLineLength(long lineNo) const
1595 {
1596     long pos = XYToPosition(0, lineNo);
1597
1598     return GetLengthOfLineContainingPos(pos);
1599 }
1600
1601 wxString wxTextCtrl::GetLineText(long lineNo) const
1602 {
1603     size_t len = (size_t)GetLineLength(lineNo) + 1;
1604
1605     // there must be at least enough place for the length WORD in the
1606     // buffer
1607     len += sizeof(WORD);
1608
1609     wxString str;
1610     {
1611         wxStringBufferLength tmp(str, len);
1612         wxChar *buf = tmp;
1613
1614         *(WORD *)buf = (WORD)len;
1615         len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf);
1616
1617 #if wxUSE_RICHEDIT
1618         if ( IsRich() )
1619         {
1620             // remove the '\r' returned by the rich edit control, the user code
1621             // should never see it
1622             if ( buf[len - 2] == _T('\r') && buf[len - 1] == _T('\n') )
1623             {
1624                 // richedit 1.0 uses "\r\n" as line terminator, so remove "\r"
1625                 // here and "\n" below
1626                 buf[len - 2] = _T('\n');
1627                 len--;
1628             }
1629             else if ( buf[len - 1] == _T('\r') )
1630             {
1631                 // richedit 2.0+ uses only "\r", replace it with "\n"
1632                 buf[len - 1] = _T('\n');
1633             }
1634         }
1635 #endif // wxUSE_RICHEDIT
1636
1637         // remove the '\n' at the end, if any (this is how this function is
1638         // supposed to work according to the docs)
1639         if ( buf[len - 1] == _T('\n') )
1640         {
1641             len--;
1642         }
1643
1644         buf[len] = 0;
1645         tmp.SetLength(len);
1646     }
1647
1648     return str;
1649 }
1650
1651 void wxTextCtrl::SetMaxLength(unsigned long len)
1652 {
1653 #if wxUSE_RICHEDIT
1654     if ( IsRich() )
1655     {
1656         ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, len ? len : 0x7fffffff);
1657     }
1658     else
1659 #endif // wxUSE_RICHEDIT
1660     {
1661         wxTextEntry::SetMaxLength(len);
1662     }
1663 }
1664
1665 // ----------------------------------------------------------------------------
1666 // Undo/redo
1667 // ----------------------------------------------------------------------------
1668
1669 void wxTextCtrl::Redo()
1670 {
1671 #if wxUSE_RICHEDIT
1672     if ( GetRichVersion() > 1 )
1673     {
1674         ::SendMessage(GetHwnd(), EM_REDO, 0, 0);
1675         return;
1676     }
1677 #endif // wxUSE_RICHEDIT
1678
1679     wxTextEntry::Redo();
1680 }
1681
1682 bool wxTextCtrl::CanRedo() const
1683 {
1684 #if wxUSE_RICHEDIT
1685     if ( GetRichVersion() > 1 )
1686         return ::SendMessage(GetHwnd(), EM_CANREDO, 0, 0) != 0;
1687 #endif // wxUSE_RICHEDIT
1688
1689     return wxTextEntry::CanRedo();
1690 }
1691
1692 // ----------------------------------------------------------------------------
1693 // caret handling (Windows only)
1694 // ----------------------------------------------------------------------------
1695
1696 bool wxTextCtrl::ShowNativeCaret(bool show)
1697 {
1698     if ( show != m_isNativeCaretShown )
1699     {
1700         if ( !(show ? ::ShowCaret(GetHwnd()) : ::HideCaret(GetHwnd())) )
1701         {
1702             // not an error, may simply indicate that it's not shown/hidden
1703             // yet (i.e. it had been hidden/shown 2 times before)
1704             return false;
1705         }
1706
1707         m_isNativeCaretShown = show;
1708     }
1709
1710     return true;
1711 }
1712
1713 // ----------------------------------------------------------------------------
1714 // implementation details
1715 // ----------------------------------------------------------------------------
1716
1717 void wxTextCtrl::Command(wxCommandEvent & event)
1718 {
1719     SetValue(event.GetString());
1720     ProcessCommand (event);
1721 }
1722
1723 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
1724 {
1725     // By default, load the first file into the text window.
1726     if (event.GetNumberOfFiles() > 0)
1727     {
1728         LoadFile(event.GetFiles()[0]);
1729     }
1730 }
1731
1732 // ----------------------------------------------------------------------------
1733 // kbd input processing
1734 // ----------------------------------------------------------------------------
1735
1736 bool wxTextCtrl::MSWShouldPreProcessMessage(WXMSG* msg)
1737 {
1738     // check for our special keys here: if we don't do it and the parent frame
1739     // uses them as accelerators, they wouldn't work at all, so we disable
1740     // usual preprocessing for them
1741     if ( msg->message == WM_KEYDOWN )
1742     {
1743         const WPARAM vkey = msg->wParam;
1744         if ( HIWORD(msg->lParam) & KF_ALTDOWN )
1745         {
1746             // Alt-Backspace is accelerator for "Undo"
1747             if ( vkey == VK_BACK )
1748                 return false;
1749         }
1750         else // no Alt
1751         {
1752             // we want to process some Ctrl-foo and Shift-bar but no key
1753             // combinations without either Ctrl or Shift nor with both of them
1754             // pressed
1755             const int ctrl = wxIsCtrlDown(),
1756                       shift = wxIsShiftDown();
1757             switch ( ctrl + shift )
1758             {
1759                 default:
1760                     wxFAIL_MSG( _T("how many modifiers have we got?") );
1761                     // fall through
1762
1763                 case 0:
1764                     if ( IsMultiLine() && vkey == VK_RETURN )
1765                         return false;
1766                     // fall through
1767                 case 2:
1768                     break;
1769
1770                 case 1:
1771                     // either Ctrl or Shift pressed
1772                     if ( ctrl )
1773                     {
1774                         switch ( vkey )
1775                         {
1776                             case 'C':
1777                             case 'V':
1778                             case 'X':
1779                             case VK_INSERT:
1780                             case VK_DELETE:
1781                             case VK_HOME:
1782                             case VK_END:
1783                                 return false;
1784                         }
1785                     }
1786                     else // Shift is pressed
1787                     {
1788                         if ( vkey == VK_INSERT || vkey == VK_DELETE )
1789                             return false;
1790                     }
1791             }
1792         }
1793     }
1794
1795     return wxControl::MSWShouldPreProcessMessage(msg);
1796 }
1797
1798 void wxTextCtrl::OnChar(wxKeyEvent& event)
1799 {
1800     switch ( event.GetKeyCode() )
1801     {
1802         case WXK_RETURN:
1803             {
1804                 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1805                 InitCommandEvent(event);
1806                 event.SetString(GetValue());
1807                 if ( HandleWindowEvent(event) )
1808                 if ( !HasFlag(wxTE_MULTILINE) )
1809                     return;
1810                 //else: multiline controls need Enter for themselves
1811             }
1812             break;
1813
1814         case WXK_TAB:
1815             // ok, so this is getting absolutely ridiculous but I don't see
1816             // any other way to fix this bug: when a multiline text control is
1817             // inside a wxFrame, we need to generate the navigation event as
1818             // otherwise nothing happens at all, but when the same control is
1819             // created inside a dialog, IsDialogMessage() *does* switch focus
1820             // all by itself and so if we do it here as well, it is advanced
1821             // twice and goes to the next control... to prevent this from
1822             // happening we're doing this ugly check, the logic being that if
1823             // we don't have focus then it had been already changed to the next
1824             // control
1825             //
1826             // the right thing to do would, of course, be to understand what
1827             // the hell is IsDialogMessage() doing but this is beyond my feeble
1828             // forces at the moment unfortunately
1829             if ( !(m_windowStyle & wxTE_PROCESS_TAB))
1830             {
1831                 if ( FindFocus() == this )
1832                 {
1833                     int flags = 0;
1834                     if (!event.ShiftDown())
1835                         flags |= wxNavigationKeyEvent::IsForward ;
1836                     if (event.ControlDown())
1837                         flags |= wxNavigationKeyEvent::WinChange ;
1838                     if (Navigate(flags))
1839                         return;
1840                 }
1841             }
1842             else
1843             {
1844                 // Insert tab since calling the default Windows handler
1845                 // doesn't seem to do it
1846                 WriteText(wxT("\t"));
1847                 return;
1848             }
1849             break;
1850     }
1851
1852     // no, we didn't process it
1853     event.Skip();
1854 }
1855
1856 void wxTextCtrl::OnKeyDown(wxKeyEvent& event)
1857 {
1858     // richedit control doesn't send WM_PASTE, WM_CUT and WM_COPY messages
1859     // when Ctrl-V, X or C is pressed and this prevents wxClipboardTextEvent
1860     // from working. So we work around it by intercepting these shortcuts
1861     // ourselves and emitting clipboard events (which richedit will handle,
1862     // so everything works as before, including pasting of rich text):
1863     if ( event.GetModifiers() == wxMOD_CONTROL && IsRich() )
1864     {
1865         switch ( event.GetKeyCode() )
1866         {
1867             case 'C':
1868                 Copy();
1869                 return;
1870             case 'X':
1871                 Cut();
1872                 return;
1873             case 'V':
1874                 Paste();
1875                 return;
1876             default:
1877                 break;
1878         }
1879     }
1880
1881     // no, we didn't process it
1882     event.Skip();
1883 }
1884
1885 WXLRESULT wxTextCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
1886 {
1887     WXLRESULT lRc = wxTextCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
1888
1889     switch ( nMsg )
1890     {
1891         case WM_GETDLGCODE:
1892             {
1893                 // we always want the chars and the arrows: the arrows for
1894                 // navigation and the chars because we want Ctrl-C to work even
1895                 // in a read only control
1896                 long lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
1897
1898                 if ( IsEditable() )
1899                 {
1900                     // we may have several different cases:
1901                     // 1. normal: both TAB and ENTER are used for navigation
1902                     // 2. ctrl wants TAB for itself: ENTER is used to pass to
1903                     //    the next control in the dialog
1904                     // 3. ctrl wants ENTER for itself: TAB is used for dialog
1905                     //    navigation
1906                     // 4. ctrl wants both TAB and ENTER: Ctrl-ENTER is used to
1907                     //    go to the next control (we need some way to do it)
1908
1909                     // multiline controls should always get ENTER for themselves
1910                     if ( HasFlag(wxTE_PROCESS_ENTER) || HasFlag(wxTE_MULTILINE) )
1911                         lDlgCode |= DLGC_WANTMESSAGE;
1912
1913                     if ( HasFlag(wxTE_PROCESS_TAB) )
1914                         lDlgCode |= DLGC_WANTTAB;
1915
1916                     lRc |= lDlgCode;
1917                 }
1918                 else // !editable
1919                 {
1920                     // NB: use "=", not "|=" as the base class version returns
1921                     //     the same flags in the disabled state as usual (i.e.
1922                     //     including DLGC_WANTMESSAGE). This is strange (how
1923                     //     does it work in the native Win32 apps?) but for now
1924                     //     live with it.
1925                     lRc = lDlgCode;
1926                 }
1927             }
1928             break;
1929     }
1930
1931     return lRc;
1932 }
1933
1934 // ----------------------------------------------------------------------------
1935 // text control event processing
1936 // ----------------------------------------------------------------------------
1937
1938 bool wxTextCtrl::SendUpdateEvent()
1939 {
1940     switch ( m_updatesCount )
1941     {
1942         case 0:
1943             // remember that we've got an update
1944             m_updatesCount++;
1945             break;
1946
1947         case 1:
1948             // we had already sent one event since the last control modification
1949             return false;
1950
1951         default:
1952             wxFAIL_MSG( _T("unexpected wxTextCtrl::m_updatesCount value") );
1953             // fall through
1954
1955         case -1:
1956             // we hadn't updated the control ourselves, this event comes from
1957             // the user, don't need to ignore it nor update the count
1958             break;
1959
1960         case -2:
1961             // the control was updated programmatically and we do NOT want to
1962             // send events
1963             return false;
1964     }
1965
1966     return SendTextUpdatedEvent();
1967 }
1968
1969 bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
1970 {
1971     switch ( param )
1972     {
1973         case EN_CHANGE:
1974             SendUpdateEvent();
1975             break;
1976
1977         case EN_MAXTEXT:
1978             // the text size limit has been hit -- try to increase it
1979             if ( !AdjustSpaceLimit() )
1980             {
1981                 wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, m_windowId);
1982                 InitCommandEvent(event);
1983                 event.SetString(GetValue());
1984                 ProcessCommand(event);
1985             }
1986             break;
1987
1988             // the other edit notification messages are not processed (or, in
1989             // the case of EN_{SET/KILL}FOCUS were already handled at WM_SET/
1990             // KILLFOCUS level)
1991         default:
1992             return false;
1993     }
1994
1995     // processed
1996     return true;
1997 }
1998
1999 WXHBRUSH wxTextCtrl::MSWControlColor(WXHDC hDC, WXHWND hWnd)
2000 {
2001     if ( !IsEnabled() && !HasFlag(wxTE_MULTILINE) )
2002         return MSWControlColorDisabled(hDC);
2003
2004     return wxTextCtrlBase::MSWControlColor(hDC, hWnd);
2005 }
2006
2007 bool wxTextCtrl::HasSpaceLimit(unsigned int *len) const
2008 {
2009     // HACK: we try to automatically extend the limit for the amount of text
2010     //       to allow (interactively) entering more than 64Kb of text under
2011     //       Win9x but we shouldn't reset the text limit which was previously
2012     //       set explicitly with SetMaxLength()
2013     //
2014     //       Unfortunately there is no EM_GETLIMITTEXTSETBYUSER and so we don't
2015     //       know the limit we set (if any). We could solve this by storing the
2016     //       limit we set in wxTextCtrl but to save space we prefer to simply
2017     //       test here the actual limit value: we consider that SetMaxLength()
2018     //       can only be called for small values while EN_MAXTEXT is only sent
2019     //       for large values (in practice the default limit seems to be 30000
2020     //       but make it smaller just to be on the safe side)
2021     *len = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
2022     return *len < 10001;
2023
2024 }
2025
2026 bool wxTextCtrl::AdjustSpaceLimit()
2027 {
2028     unsigned int limit;
2029     if ( HasSpaceLimit(&limit) )
2030         return false;
2031
2032     unsigned int len = ::GetWindowTextLength(GetHwnd());
2033     if ( len >= limit )
2034     {
2035         // increment in 32Kb chunks
2036         SetMaxLength(len + 0x8000);
2037     }
2038
2039     // we changed the limit
2040     return true;
2041 }
2042
2043 bool wxTextCtrl::AcceptsFocusFromKeyboard() const
2044 {
2045     // we don't want focus if we can't be edited unless we're a multiline
2046     // control because then it might be still nice to get focus from keyboard
2047     // to be able to scroll it without mouse
2048     return (IsEditable() || IsMultiLine()) && wxControl::AcceptsFocus();
2049 }
2050
2051 wxSize wxTextCtrl::DoGetBestSize() const
2052 {
2053     int cx, cy;
2054     wxGetCharSize(GetHWND(), &cx, &cy, GetFont());
2055
2056     int wText = DEFAULT_ITEM_WIDTH;
2057
2058     int hText = cy;
2059     if ( m_windowStyle & wxTE_MULTILINE )
2060     {
2061         hText *= wxMax(wxMin(GetNumberOfLines(), 10), 2);
2062     }
2063     //else: for single line control everything is ok
2064
2065     // we have to add the adjustments for the control height only once, not
2066     // once per line, so do it after multiplication above
2067     hText += EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy) - cy;
2068
2069     return wxSize(wText, hText);
2070 }
2071
2072 // ----------------------------------------------------------------------------
2073 // standard handlers for standard edit menu events
2074 // ----------------------------------------------------------------------------
2075
2076 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
2077 {
2078     Cut();
2079 }
2080
2081 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
2082 {
2083     Copy();
2084 }
2085
2086 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
2087 {
2088     Paste();
2089 }
2090
2091 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
2092 {
2093     Undo();
2094 }
2095
2096 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
2097 {
2098     Redo();
2099 }
2100
2101 void wxTextCtrl::OnDelete(wxCommandEvent& WXUNUSED(event))
2102 {
2103     RemoveSelection();
2104 }
2105
2106 void wxTextCtrl::OnSelectAll(wxCommandEvent& WXUNUSED(event))
2107 {
2108     SelectAll();
2109 }
2110
2111 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
2112 {
2113     event.Enable( CanCut() );
2114 }
2115
2116 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
2117 {
2118     event.Enable( CanCopy() );
2119 }
2120
2121 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
2122 {
2123     event.Enable( CanPaste() );
2124 }
2125
2126 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
2127 {
2128     event.Enable( CanUndo() );
2129 }
2130
2131 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
2132 {
2133     event.Enable( CanRedo() );
2134 }
2135
2136 void wxTextCtrl::OnUpdateDelete(wxUpdateUIEvent& event)
2137 {
2138     event.Enable( HasSelection() && IsEditable() );
2139 }
2140
2141 void wxTextCtrl::OnUpdateSelectAll(wxUpdateUIEvent& event)
2142 {
2143     event.Enable( !IsEmpty() );
2144 }
2145
2146 void wxTextCtrl::OnContextMenu(wxContextMenuEvent& event)
2147 {
2148 #if wxUSE_RICHEDIT
2149     if (IsRich())
2150     {
2151         if (!m_privateContextMenu)
2152         {
2153             m_privateContextMenu = new wxMenu;
2154             m_privateContextMenu->Append(wxID_UNDO, _("&Undo"));
2155             m_privateContextMenu->Append(wxID_REDO, _("&Redo"));
2156             m_privateContextMenu->AppendSeparator();
2157             m_privateContextMenu->Append(wxID_CUT, _("Cu&t"));
2158             m_privateContextMenu->Append(wxID_COPY, _("&Copy"));
2159             m_privateContextMenu->Append(wxID_PASTE, _("&Paste"));
2160             m_privateContextMenu->Append(wxID_CLEAR, _("&Delete"));
2161             m_privateContextMenu->AppendSeparator();
2162             m_privateContextMenu->Append(wxID_SELECTALL, _("Select &All"));
2163         }
2164         PopupMenu(m_privateContextMenu);
2165         return;
2166     }
2167     else
2168 #endif
2169     event.Skip();
2170 }
2171
2172 void wxTextCtrl::OnSetFocus(wxFocusEvent& event)
2173 {
2174     // be sure the caret remains invisible if the user had hidden it
2175     if ( !m_isNativeCaretShown )
2176     {
2177         ::HideCaret(GetHwnd());
2178     }
2179
2180     event.Skip();
2181 }
2182
2183 // ----------------------------------------------------------------------------
2184 // Default colors for MSW text control
2185 //
2186 // Set default background color to the native white instead of
2187 // the default wxSYS_COLOUR_BTNFACE (is triggered with wxNullColour).
2188 // ----------------------------------------------------------------------------
2189
2190 wxVisualAttributes wxTextCtrl::GetDefaultAttributes() const
2191 {
2192     wxVisualAttributes attrs;
2193     attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
2194     attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
2195     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW); //white
2196
2197     return attrs;
2198 }
2199
2200 // the rest of the file only deals with the rich edit controls
2201 #if wxUSE_RICHEDIT
2202
2203 // ----------------------------------------------------------------------------
2204 // EN_LINK processing
2205 // ----------------------------------------------------------------------------
2206
2207 bool wxTextCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
2208 {
2209     NMHDR *hdr = (NMHDR* )lParam;
2210     switch ( hdr->code )
2211     {
2212        case EN_MSGFILTER:
2213             {
2214                 const MSGFILTER *msgf = (MSGFILTER *)lParam;
2215                 UINT msg = msgf->msg;
2216
2217                 // this is a bit crazy but richedit 1.0 sends us all mouse
2218                 // events _except_ WM_LBUTTONUP (don't ask me why) so we have
2219                 // generate the wxWin events for this message manually
2220                 //
2221                 // NB: in fact, this is still not totally correct as it does
2222                 //     send us WM_LBUTTONUP if the selection was cleared by the
2223                 //     last click -- so currently we get 2 events in this case,
2224                 //     but as I don't see any obvious way to check for this I
2225                 //     leave this code in place because it's still better than
2226                 //     not getting left up events at all
2227                 if ( msg == WM_LBUTTONUP )
2228                 {
2229                     WXUINT flags = msgf->wParam;
2230                     int x = GET_X_LPARAM(msgf->lParam),
2231                         y = GET_Y_LPARAM(msgf->lParam);
2232
2233                     HandleMouseEvent(msg, x, y, flags);
2234                 }
2235             }
2236
2237             // return true to process the event (and false to ignore it)
2238             return true;
2239
2240         case EN_LINK:
2241             {
2242                 const ENLINK *enlink = (ENLINK *)hdr;
2243
2244                 switch ( enlink->msg )
2245                 {
2246                     case WM_SETCURSOR:
2247                         // ok, so it is hardcoded - do we really nee to
2248                         // customize it?
2249                         {
2250                             wxCursor cur(wxCURSOR_HAND);
2251                             ::SetCursor(GetHcursorOf(cur));
2252                             *result = TRUE;
2253                             break;
2254                         }
2255
2256                     case WM_MOUSEMOVE:
2257                     case WM_LBUTTONDOWN:
2258                     case WM_LBUTTONUP:
2259                     case WM_LBUTTONDBLCLK:
2260                     case WM_RBUTTONDOWN:
2261                     case WM_RBUTTONUP:
2262                     case WM_RBUTTONDBLCLK:
2263                         // send a mouse event
2264                         {
2265                             static const wxEventType eventsMouse[] =
2266                             {
2267                                 wxEVT_MOTION,
2268                                 wxEVT_LEFT_DOWN,
2269                                 wxEVT_LEFT_UP,
2270                                 wxEVT_LEFT_DCLICK,
2271                                 wxEVT_RIGHT_DOWN,
2272                                 wxEVT_RIGHT_UP,
2273                                 wxEVT_RIGHT_DCLICK,
2274                             };
2275
2276                             // the event ids are consecutive
2277                             wxMouseEvent
2278                                 evtMouse(eventsMouse[enlink->msg - WM_MOUSEMOVE]);
2279
2280                             InitMouseEvent(evtMouse,
2281                                            GET_X_LPARAM(enlink->lParam),
2282                                            GET_Y_LPARAM(enlink->lParam),
2283                                            enlink->wParam);
2284
2285                             wxTextUrlEvent event(m_windowId, evtMouse,
2286                                                  enlink->chrg.cpMin,
2287                                                  enlink->chrg.cpMax);
2288
2289                             InitCommandEvent(event);
2290
2291                             *result = ProcessCommand(event);
2292                         }
2293                         break;
2294                 }
2295             }
2296             return true;
2297     }
2298
2299     // not processed, leave it to the base class
2300     return wxTextCtrlBase::MSWOnNotify(idCtrl, lParam, result);
2301 }
2302
2303 #if wxUSE_DRAG_AND_DROP
2304
2305 void wxTextCtrl::SetDropTarget(wxDropTarget *dropTarget)
2306 {
2307     if ( m_dropTarget == wxRICHTEXT_DEFAULT_DROPTARGET )
2308     {
2309         // get rid of the built-in drop target
2310         ::RevokeDragDrop(GetHwnd());
2311         m_dropTarget = NULL;
2312     }
2313
2314     wxTextCtrlBase::SetDropTarget(dropTarget);
2315 }
2316
2317 #endif // wxUSE_DRAG_AND_DROP
2318
2319 // ----------------------------------------------------------------------------
2320 // colour setting for the rich edit controls
2321 // ----------------------------------------------------------------------------
2322
2323 bool wxTextCtrl::SetBackgroundColour(const wxColour& colour)
2324 {
2325     if ( !wxTextCtrlBase::SetBackgroundColour(colour) )
2326     {
2327         // colour didn't really change
2328         return false;
2329     }
2330
2331     if ( IsRich() )
2332     {
2333         // rich edit doesn't use WM_CTLCOLOR, hence we need to send
2334         // EM_SETBKGNDCOLOR additionally
2335         ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour));
2336     }
2337
2338     return true;
2339 }
2340
2341 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
2342 {
2343     if ( !wxTextCtrlBase::SetForegroundColour(colour) )
2344     {
2345         // colour didn't really change
2346         return false;
2347     }
2348
2349     if ( IsRich() )
2350     {
2351         // change the colour of everything
2352         CHARFORMAT cf;
2353         wxZeroMemory(cf);
2354         cf.cbSize = sizeof(cf);
2355         cf.dwMask = CFM_COLOR;
2356         cf.crTextColor = wxColourToRGB(colour);
2357         ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf);
2358     }
2359
2360     return true;
2361 }
2362
2363 // ----------------------------------------------------------------------------
2364 // styling support for rich edit controls
2365 // ----------------------------------------------------------------------------
2366
2367 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
2368 {
2369     if ( !IsRich() )
2370     {
2371         // can't do it with normal text control
2372         return false;
2373     }
2374
2375     // the richedit 1.0 doesn't handle setting background colour, so don't
2376     // even try to do anything if it's the only thing we want to change
2377     if ( m_verRichEdit == 1 && !style.HasFont() && !style.HasTextColour() &&
2378         !style.HasLeftIndent() && !style.HasRightIndent() && !style.HasAlignment() &&
2379         !style.HasTabs() )
2380     {
2381         // nothing to do: return true if there was really nothing to do and
2382         // false if we failed to set bg colour
2383         return !style.HasBackgroundColour();
2384     }
2385
2386     // order the range if needed
2387     if ( start > end )
2388     {
2389         long tmp = start;
2390         start = end;
2391         end = tmp;
2392     }
2393
2394     // we can only change the format of the selection, so select the range we
2395     // want and restore the old selection later
2396     long startOld, endOld;
2397     GetSelection(&startOld, &endOld);
2398
2399     // but do we really have to change the selection?
2400     bool changeSel = start != startOld || end != endOld;
2401
2402     if ( changeSel )
2403     {
2404         DoSetSelection(start, end, SetSel_NoScroll);
2405     }
2406
2407     // initialize CHARFORMAT struct
2408 #if wxUSE_RICHEDIT2
2409     CHARFORMAT2 cf;
2410 #else
2411     CHARFORMAT cf;
2412 #endif
2413
2414     wxZeroMemory(cf);
2415
2416     // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2417     // CHARFORMAT in that case
2418 #if wxUSE_RICHEDIT2
2419     if ( m_verRichEdit == 1 )
2420     {
2421         // this is the only thing the control is going to grok
2422         cf.cbSize = sizeof(CHARFORMAT);
2423     }
2424     else
2425 #endif
2426     {
2427         // CHARFORMAT or CHARFORMAT2
2428         cf.cbSize = sizeof(cf);
2429     }
2430
2431     if ( style.HasFont() )
2432     {
2433         // VZ: CFM_CHARSET doesn't seem to do anything at all in RichEdit 2.0
2434         //     but using it doesn't seem to hurt neither so leaving it for now
2435
2436         cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET |
2437                      CFM_ITALIC | CFM_BOLD | CFM_UNDERLINE;
2438
2439         // fill in data from LOGFONT but recalculate lfHeight because we need
2440         // the real height in twips and not the negative number which
2441         // wxFillLogFont() returns (this is correct in general and works with
2442         // the Windows font mapper, but not here)
2443
2444         wxFont font(style.GetFont());
2445
2446         LOGFONT lf;
2447         wxFillLogFont(&lf, &font);
2448         cf.yHeight = 20*font.GetPointSize(); // 1 pt = 20 twips
2449         cf.bCharSet = lf.lfCharSet;
2450         cf.bPitchAndFamily = lf.lfPitchAndFamily;
2451         wxStrlcpy(cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName));
2452
2453         // also deal with underline/italic/bold attributes: note that we must
2454         // always set CFM_ITALIC &c bits in dwMask, even if we don't set the
2455         // style to allow clearing it
2456         if ( lf.lfItalic )
2457         {
2458             cf.dwEffects |= CFE_ITALIC;
2459         }
2460
2461         if ( lf.lfWeight == FW_BOLD )
2462         {
2463             cf.dwEffects |= CFE_BOLD;
2464         }
2465
2466         if ( lf.lfUnderline )
2467         {
2468             cf.dwEffects |= CFE_UNDERLINE;
2469         }
2470
2471         // strikeout fonts are not supported by wxWidgets
2472     }
2473
2474     if ( style.HasTextColour() )
2475     {
2476         cf.dwMask |= CFM_COLOR;
2477         cf.crTextColor = wxColourToRGB(style.GetTextColour());
2478     }
2479
2480 #if wxUSE_RICHEDIT2
2481     if ( m_verRichEdit != 1 && style.HasBackgroundColour() )
2482     {
2483         cf.dwMask |= CFM_BACKCOLOR;
2484         cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
2485     }
2486 #endif // wxUSE_RICHEDIT2
2487
2488     // do format the selection
2489     bool ok = ::SendMessage(GetHwnd(), EM_SETCHARFORMAT,
2490                             SCF_SELECTION, (LPARAM)&cf) != 0;
2491     if ( !ok )
2492     {
2493         wxLogDebug(_T("SendMessage(EM_SETCHARFORMAT, SCF_SELECTION) failed"));
2494     }
2495
2496     // now do the paragraph formatting
2497     PARAFORMAT2 pf;
2498     wxZeroMemory(pf);
2499     // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2500     // PARAFORMAT in that case
2501 #if wxUSE_RICHEDIT2
2502     if ( m_verRichEdit == 1 )
2503     {
2504         // this is the only thing the control is going to grok
2505         pf.cbSize = sizeof(PARAFORMAT);
2506     }
2507     else
2508 #endif
2509     {
2510         // PARAFORMAT or PARAFORMAT2
2511         pf.cbSize = sizeof(pf);
2512     }
2513
2514     if (style.HasAlignment())
2515     {
2516         pf.dwMask |= PFM_ALIGNMENT;
2517         if (style.GetAlignment() == wxTEXT_ALIGNMENT_RIGHT)
2518             pf.wAlignment = PFA_RIGHT;
2519         else if (style.GetAlignment() == wxTEXT_ALIGNMENT_CENTRE)
2520             pf.wAlignment = PFA_CENTER;
2521         else if (style.GetAlignment() == wxTEXT_ALIGNMENT_JUSTIFIED)
2522             pf.wAlignment = PFA_JUSTIFY;
2523         else
2524             pf.wAlignment = PFA_LEFT;
2525     }
2526
2527     if (style.HasLeftIndent())
2528     {
2529         pf.dwMask |= PFM_STARTINDENT | PFM_OFFSET;
2530
2531         // Convert from 1/10 mm to TWIPS
2532         pf.dxStartIndent = (int) (((double) style.GetLeftIndent()) * mm2twips / 10.0) ;
2533         pf.dxOffset = (int) (((double) style.GetLeftSubIndent()) * mm2twips / 10.0) ;
2534     }
2535
2536     if (style.HasRightIndent())
2537     {
2538         pf.dwMask |= PFM_RIGHTINDENT;
2539
2540         // Convert from 1/10 mm to TWIPS
2541         pf.dxRightIndent = (int) (((double) style.GetRightIndent()) * mm2twips / 10.0) ;
2542     }
2543
2544     if (style.HasTabs())
2545     {
2546         pf.dwMask |= PFM_TABSTOPS;
2547
2548         const wxArrayInt& tabs = style.GetTabs();
2549
2550         pf.cTabCount = (SHORT)wxMin(tabs.GetCount(), MAX_TAB_STOPS);
2551         size_t i;
2552         for (i = 0; i < (size_t) pf.cTabCount; i++)
2553         {
2554             // Convert from 1/10 mm to TWIPS
2555             pf.rgxTabs[i] = (int) (((double) tabs[i]) * mm2twips / 10.0) ;
2556         }
2557     }
2558
2559 #if wxUSE_RICHEDIT2
2560     if ( m_verRichEdit > 1 )
2561     {
2562         if ( wxTheApp->GetLayoutDirection() == wxLayout_RightToLeft )
2563         {
2564             // Use RTL paragraphs in RTL mode to get proper layout
2565             pf.dwMask |= PFM_RTLPARA;
2566             pf.wEffects |= PFE_RTLPARA;
2567         }
2568     }
2569 #endif // wxUSE_RICHEDIT2
2570
2571     if ( pf.dwMask )
2572     {
2573         // do format the selection
2574         bool ok = ::SendMessage(GetHwnd(), EM_SETPARAFORMAT,
2575                                 0, (LPARAM) &pf) != 0;
2576         if ( !ok )
2577         {
2578             wxLogDebug(_T("SendMessage(EM_SETPARAFORMAT, 0) failed"));
2579         }
2580     }
2581
2582     if ( changeSel )
2583     {
2584         // restore the original selection
2585         DoSetSelection(startOld, endOld, SetSel_NoScroll);
2586     }
2587
2588     return ok;
2589 }
2590
2591 bool wxTextCtrl::SetDefaultStyle(const wxTextAttr& style)
2592 {
2593     if ( !wxTextCtrlBase::SetDefaultStyle(style) )
2594         return false;
2595
2596     if ( IsEditable() )
2597     {
2598         // we have to do this or the style wouldn't apply for the text typed by
2599         // the user
2600         wxTextPos posLast = GetLastPosition();
2601         SetStyle(posLast, posLast, m_defaultStyle);
2602     }
2603
2604     return true;
2605 }
2606
2607 bool wxTextCtrl::GetStyle(long position, wxTextAttr& style)
2608 {
2609     if ( !IsRich() )
2610     {
2611         // can't do it with normal text control
2612         return false;
2613     }
2614
2615     // initialize CHARFORMAT struct
2616 #if wxUSE_RICHEDIT2
2617     CHARFORMAT2 cf;
2618 #else
2619     CHARFORMAT cf;
2620 #endif
2621
2622     wxZeroMemory(cf);
2623
2624     // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2625     // CHARFORMAT in that case
2626 #if wxUSE_RICHEDIT2
2627     if ( m_verRichEdit == 1 )
2628     {
2629         // this is the only thing the control is going to grok
2630         cf.cbSize = sizeof(CHARFORMAT);
2631     }
2632     else
2633 #endif
2634     {
2635         // CHARFORMAT or CHARFORMAT2
2636         cf.cbSize = sizeof(cf);
2637     }
2638     // we can only change the format of the selection, so select the range we
2639     // want and restore the old selection later
2640     long startOld, endOld;
2641     GetSelection(&startOld, &endOld);
2642
2643     // but do we really have to change the selection?
2644     bool changeSel = position != startOld || position != endOld;
2645
2646     if ( changeSel )
2647     {
2648         DoSetSelection(position, position + 1, SetSel_NoScroll);
2649     }
2650
2651     // get the selection formatting
2652     (void) ::SendMessage(GetHwnd(), EM_GETCHARFORMAT,
2653                             SCF_SELECTION, (LPARAM)&cf) ;
2654
2655
2656     LOGFONT lf;
2657     lf.lfHeight = cf.yHeight;
2658     lf.lfWidth = 0;
2659     lf.lfCharSet = ANSI_CHARSET; // FIXME: how to get correct charset?
2660     lf.lfClipPrecision = 0;
2661     lf.lfEscapement = 0;
2662     wxStrcpy(lf.lfFaceName, cf.szFaceName);
2663
2664     //NOTE:  we _MUST_ set each of these values to _something_ since we
2665     //do not call wxZeroMemory on the LOGFONT lf
2666     if (cf.dwEffects & CFE_ITALIC)
2667         lf.lfItalic = TRUE;
2668     else
2669         lf.lfItalic = FALSE;
2670
2671     lf.lfOrientation = 0;
2672     lf.lfPitchAndFamily = cf.bPitchAndFamily;
2673     lf.lfQuality = 0;
2674
2675     if (cf.dwEffects & CFE_STRIKEOUT)
2676         lf.lfStrikeOut = TRUE;
2677     else
2678         lf.lfStrikeOut = FALSE;
2679
2680     if (cf.dwEffects & CFE_UNDERLINE)
2681         lf.lfUnderline = TRUE;
2682     else
2683         lf.lfUnderline = FALSE;
2684
2685     if (cf.dwEffects & CFE_BOLD)
2686         lf.lfWeight = FW_BOLD;
2687     else
2688         lf.lfWeight = FW_NORMAL;
2689
2690     wxFont font = wxCreateFontFromLogFont(& lf);
2691     if (font.Ok())
2692     {
2693         style.SetFont(font);
2694     }
2695     style.SetTextColour(wxColour(cf.crTextColor));
2696
2697 #if wxUSE_RICHEDIT2
2698     if ( m_verRichEdit != 1 )
2699     {
2700         // cf.dwMask |= CFM_BACKCOLOR;
2701         style.SetBackgroundColour(wxColour(cf.crBackColor));
2702     }
2703 #endif // wxUSE_RICHEDIT2
2704
2705     // now get the paragraph formatting
2706     PARAFORMAT2 pf;
2707     wxZeroMemory(pf);
2708     // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2709     // PARAFORMAT in that case
2710 #if wxUSE_RICHEDIT2
2711     if ( m_verRichEdit == 1 )
2712     {
2713         // this is the only thing the control is going to grok
2714         pf.cbSize = sizeof(PARAFORMAT);
2715     }
2716     else
2717 #endif
2718     {
2719         // PARAFORMAT or PARAFORMAT2
2720         pf.cbSize = sizeof(pf);
2721     }
2722
2723     // do format the selection
2724     (void) ::SendMessage(GetHwnd(), EM_GETPARAFORMAT, 0, (LPARAM) &pf) ;
2725
2726     style.SetLeftIndent( (int) ((double) pf.dxStartIndent * twips2mm * 10.0), (int) ((double) pf.dxOffset * twips2mm * 10.0) );
2727     style.SetRightIndent( (int) ((double) pf.dxRightIndent * twips2mm * 10.0) );
2728
2729     if (pf.wAlignment == PFA_CENTER)
2730         style.SetAlignment(wxTEXT_ALIGNMENT_CENTRE);
2731     else if (pf.wAlignment == PFA_RIGHT)
2732         style.SetAlignment(wxTEXT_ALIGNMENT_RIGHT);
2733     else if (pf.wAlignment == PFA_JUSTIFY)
2734         style.SetAlignment(wxTEXT_ALIGNMENT_JUSTIFIED);
2735     else
2736         style.SetAlignment(wxTEXT_ALIGNMENT_LEFT);
2737
2738     wxArrayInt tabStops;
2739     size_t i;
2740     for (i = 0; i < (size_t) pf.cTabCount; i++)
2741     {
2742         tabStops.Add( (int) ((double) (pf.rgxTabs[i] & 0xFFFF) * twips2mm * 10.0) );
2743     }
2744
2745     if ( changeSel )
2746     {
2747         // restore the original selection
2748         DoSetSelection(startOld, endOld, SetSel_NoScroll);
2749     }
2750
2751     return true;
2752 }
2753
2754 // ----------------------------------------------------------------------------
2755 // wxRichEditModule
2756 // ----------------------------------------------------------------------------
2757
2758 static const HINSTANCE INVALID_HINSTANCE = (HINSTANCE)-1;
2759
2760 bool wxRichEditModule::OnInit()
2761 {
2762     // don't do anything - we will load it when needed
2763     return true;
2764 }
2765
2766 void wxRichEditModule::OnExit()
2767 {
2768     for ( size_t i = 0; i < WXSIZEOF(ms_hRichEdit); i++ )
2769     {
2770         if ( ms_hRichEdit[i] && ms_hRichEdit[i] != INVALID_HINSTANCE )
2771         {
2772             ::FreeLibrary(ms_hRichEdit[i]);
2773             ms_hRichEdit[i] = NULL;
2774         }
2775     }
2776 #if wxUSE_INKEDIT
2777     if (ms_inkEditLib.IsLoaded())
2778         ms_inkEditLib.Unload();
2779 #endif
2780 }
2781
2782 /* static */
2783 bool wxRichEditModule::Load(Version version)
2784 {
2785     if ( ms_hRichEdit[version] == INVALID_HINSTANCE )
2786     {
2787         // we had already tried to load it and failed
2788         return false;
2789     }
2790
2791     if ( ms_hRichEdit[version] )
2792     {
2793         // we've already got this one
2794         return true;
2795     }
2796
2797     static const wxChar *dllnames[] =
2798     {
2799         _T("riched32"),
2800         _T("riched20"),
2801         _T("msftedit"),
2802     };
2803
2804     wxCOMPILE_TIME_ASSERT( WXSIZEOF(dllnames) == Version_Max,
2805                             RichEditDllNamesVersionsMismatch );
2806
2807     ms_hRichEdit[version] = ::LoadLibrary(dllnames[version]);
2808
2809     if ( !ms_hRichEdit[version] )
2810     {
2811         ms_hRichEdit[version] = INVALID_HINSTANCE;
2812
2813         return false;
2814     }
2815
2816     return true;
2817 }
2818
2819 #if wxUSE_INKEDIT
2820 // load the InkEdit library
2821 bool wxRichEditModule::LoadInkEdit()
2822 {
2823     static wxDynamicLibrary ms_inkEditLib;
2824     static bool             ms_inkEditLibLoadAttemped;
2825     if (ms_inkEditLibLoadAttemped)
2826         ms_inkEditLib.IsLoaded();
2827
2828     ms_inkEditLibLoadAttemped = true;
2829
2830     wxLogNull logNull;
2831     return ms_inkEditLib.Load(wxT("inked"));
2832 }
2833 #endif // wxUSE_INKEDIT
2834
2835
2836 #endif // wxUSE_RICHEDIT
2837
2838 #endif // wxUSE_TEXTCTRL && !(__SMARTPHONE__ && __WXWINCE__)