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/msw/missing.h"
  31     #include "wx/textctrl.h"
  32     #include "wx/settings.h"
  33     #include "wx/brush.h"
  34     #include "wx/utils.h"
  35     #include "wx/intl.h"
  36     #include "wx/log.h"
  37     #include "wx/app.h"
  38     #include "wx/menu.h"
  39     #include "wx/math.h"
  40     #include "wx/module.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
  56 #include <string.h>
  57 #include <stdlib.h>
  58
  59 #ifndef __WXWINCE__
  60 #include <sys/types.h>
  61 #endif
  62
  63 #if wxUSE_RICHEDIT
  64
  65 #if wxUSE_INKEDIT
  66 #include "wx/dynlib.h"
  67 #endif
  68
  69 // old mingw32 has richedit stuff directly in windows.h and doesn't have
  70 // richedit.h at all
  71 #if !defined(__GNUWIN32_OLD__) || defined(__CYGWIN10__)
  72     #include <richedit.h>
  73 #endif
  74
  75 #endif // wxUSE_RICHEDIT
  76
  77 // ----------------------------------------------------------------------------
  78 // private classes
  79 // ----------------------------------------------------------------------------
  80
  81 #if wxUSE_RICHEDIT
  82
  83 // this module initializes RichEdit DLL(s) if needed
  84 class wxRichEditModule : public wxModule
  85 {
  86 public:
  87     enum Version
  88     {
  89         Version_1,          // riched32.dll
  90         Version_2or3,       // both use riched20.dll
  91         Version_41,         // msftedit.dll (XP SP1 and Windows 2003)
  92         Version_Max
  93     };
  94
  95     virtual bool OnInit();
  96     virtual void OnExit();
  97
  98     // load the richedit DLL for the specified version of rich edit
  99     static bool Load(Version version);
 100
 101 #if wxUSE_INKEDIT
 102     // load the InkEdit library
 103     static bool LoadInkEdit();
 104 #endif
 105
 106 private:
 107     // the handles to richedit 1.0 and 2.0 (or 3.0) DLLs
 108     static HINSTANCE ms_hRichEdit[Version_Max];
 109
 110 #if wxUSE_INKEDIT
 111     static wxDynamicLibrary ms_inkEditLib;
 112     static bool             ms_inkEditLibLoadAttemped;
 113 #endif
 114
 115     DECLARE_DYNAMIC_CLASS(wxRichEditModule)
 116 };
 117
 118 HINSTANCE wxRichEditModule::ms_hRichEdit[Version_Max] = { NULL, NULL, NULL };
 119
 120 #if wxUSE_INKEDIT
 121 wxDynamicLibrary wxRichEditModule::ms_inkEditLib;
 122 bool             wxRichEditModule::ms_inkEditLibLoadAttemped = false;
 123 #endif
 124
 125 IMPLEMENT_DYNAMIC_CLASS(wxRichEditModule, wxModule)
 126
 127 #endif // wxUSE_RICHEDIT
 128
 129 // a small class used to set m_updatesCount to 0 (to filter duplicate events if
 130 // necessary) and to reset it back to -1 afterwards
 131 class UpdatesCountFilter
 132 {
 133 public:
 134     UpdatesCountFilter(int& count)
 135         : m_count(count)
 136     {
 137         wxASSERT_MSG( m_count == -1, _T("wrong initial m_updatesCount value") );
 138
 139         m_count = 0;
 140     }
 141
 142     ~UpdatesCountFilter()
 143     {
 144         m_count = -1;
 145     }
 146
 147     // return true if an event has been received
 148     bool GotUpdate() const
 149     {
 150         return m_count == 1;
 151     }
 152
 153 private:
 154     int& m_count;
 155
 156     DECLARE_NO_COPY_CLASS(UpdatesCountFilter)
 157 };
 158
 159 // ----------------------------------------------------------------------------
 160 // event tables and other macros
 161 // ----------------------------------------------------------------------------
 162
 163 #if wxUSE_EXTENDED_RTTI
 164 WX_DEFINE_FLAGS( wxTextCtrlStyle )
 165
 166 wxBEGIN_FLAGS( wxTextCtrlStyle )
 167     // new style border flags, we put them first to
 168     // use them for streaming out
 169     wxFLAGS_MEMBER(wxBORDER_SIMPLE)
 170     wxFLAGS_MEMBER(wxBORDER_SUNKEN)
 171     wxFLAGS_MEMBER(wxBORDER_DOUBLE)
 172     wxFLAGS_MEMBER(wxBORDER_RAISED)
 173     wxFLAGS_MEMBER(wxBORDER_STATIC)
 174     wxFLAGS_MEMBER(wxBORDER_NONE)
 175
 176     // old style border flags
 177     wxFLAGS_MEMBER(wxSIMPLE_BORDER)
 178     wxFLAGS_MEMBER(wxSUNKEN_BORDER)
 179     wxFLAGS_MEMBER(wxDOUBLE_BORDER)
 180     wxFLAGS_MEMBER(wxRAISED_BORDER)
 181     wxFLAGS_MEMBER(wxSTATIC_BORDER)
 182     wxFLAGS_MEMBER(wxBORDER)
 183
 184     // standard window styles
 185     wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
 186     wxFLAGS_MEMBER(wxCLIP_CHILDREN)
 187     wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
 188     wxFLAGS_MEMBER(wxWANTS_CHARS)
 189     wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
 190     wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
 191     wxFLAGS_MEMBER(wxVSCROLL)
 192     wxFLAGS_MEMBER(wxHSCROLL)
 193
 194     wxFLAGS_MEMBER(wxTE_PROCESS_ENTER)
 195     wxFLAGS_MEMBER(wxTE_PROCESS_TAB)
 196     wxFLAGS_MEMBER(wxTE_MULTILINE)
 197     wxFLAGS_MEMBER(wxTE_PASSWORD)
 198     wxFLAGS_MEMBER(wxTE_READONLY)
 199     wxFLAGS_MEMBER(wxHSCROLL)
 200     wxFLAGS_MEMBER(wxTE_RICH)
 201     wxFLAGS_MEMBER(wxTE_RICH2)
 202     wxFLAGS_MEMBER(wxTE_AUTO_URL)
 203     wxFLAGS_MEMBER(wxTE_NOHIDESEL)
 204     wxFLAGS_MEMBER(wxTE_LEFT)
 205     wxFLAGS_MEMBER(wxTE_CENTRE)
 206     wxFLAGS_MEMBER(wxTE_RIGHT)
 207     wxFLAGS_MEMBER(wxTE_DONTWRAP)
 208     wxFLAGS_MEMBER(wxTE_CHARWRAP)
 209     wxFLAGS_MEMBER(wxTE_WORDWRAP)
 210
 211 wxEND_FLAGS( wxTextCtrlStyle )
 212
 213 IMPLEMENT_DYNAMIC_CLASS_XTI(wxTextCtrl, wxControl,"wx/textctrl.h")
 214
 215 wxBEGIN_PROPERTIES_TABLE(wxTextCtrl)
 216     wxEVENT_PROPERTY( TextUpdated , wxEVT_COMMAND_TEXT_UPDATED , wxCommandEvent )
 217     wxEVENT_PROPERTY( TextEnter , wxEVT_COMMAND_TEXT_ENTER , wxCommandEvent )
 218
 219     wxPROPERTY( Font , wxFont , SetFont , GetFont  , EMPTY_MACROVALUE, 0 /*flags*/ , wxT("Helpstring") , wxT("group") )
 220     wxPROPERTY( Value , wxString , SetValue, GetValue, wxString() , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
 221     wxPROPERTY_FLAGS( WindowStyle , wxTextCtrlStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
 222 wxEND_PROPERTIES_TABLE()
 223
 224 wxBEGIN_HANDLERS_TABLE(wxTextCtrl)
 225 wxEND_HANDLERS_TABLE()
 226
 227 wxCONSTRUCTOR_6( wxTextCtrl , wxWindow* , Parent , wxWindowID , Id , wxString , Value , wxPoint , Position , wxSize , Size , long , WindowStyle)
 228 #else
 229 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxTextCtrlBase)
 230 #endif
 231
 232
 233 BEGIN_EVENT_TABLE(wxTextCtrl, wxTextCtrlBase)
 234     EVT_CHAR(wxTextCtrl::OnChar)
 235     EVT_DROP_FILES(wxTextCtrl::OnDropFiles)
 236
 237 #if wxUSE_RICHEDIT
 238     EVT_CONTEXT_MENU(wxTextCtrl::OnContextMenu)
 239 #endif
 240
 241     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 242     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 243     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 244     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 245     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 246     EVT_MENU(wxID_CLEAR, wxTextCtrl::OnDelete)
 247     EVT_MENU(wxID_SELECTALL, wxTextCtrl::OnSelectAll)
 248
 249     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 250     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 251     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 252     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 253     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 254     EVT_UPDATE_UI(wxID_CLEAR, wxTextCtrl::OnUpdateDelete)
 255     EVT_UPDATE_UI(wxID_SELECTALL, wxTextCtrl::OnUpdateSelectAll)
 256
 257     EVT_SET_FOCUS(wxTextCtrl::OnSetFocus)
 258 END_EVENT_TABLE()
 259
 260 // ----------------------------------------------------------------------------
 261 // function prototypes
 262 // ----------------------------------------------------------------------------
 263
 264 LRESULT APIENTRY _EXPORT wxTextCtrlWndProc(HWND hWnd,
 265                                            UINT message,
 266                                            WPARAM wParam,
 267                                            LPARAM lParam);
 268
 269 // ---------------------------------------------------------------------------
 270 // global vars
 271 // ---------------------------------------------------------------------------
 272
 273 // the pointer to standard text control wnd proc
 274 static WNDPROC gs_wndprocEdit = (WNDPROC)NULL;
 275
 276 // ============================================================================
 277 // implementation
 278 // ============================================================================
 279
 280 // ----------------------------------------------------------------------------
 281 // wnd proc for subclassed edit control
 282 // ----------------------------------------------------------------------------
 283
 284 LRESULT APIENTRY _EXPORT wxTextCtrlWndProc(HWND hWnd,
 285                                            UINT message,
 286                                            WPARAM wParam,
 287                                            LPARAM lParam)
 288 {
 289     switch ( message )
 290     {
 291         case WM_CUT:
 292         case WM_COPY:
 293         case WM_PASTE:
 294             {
 295                 wxWindow *win = wxFindWinFromHandle((WXHWND)hWnd);
 296                 if( win->HandleClipboardEvent( message ) )
 297                     return 0;
 298                 break;
 299             }
 300     }
 301     return ::CallWindowProc(CASTWNDPROC gs_wndprocEdit, hWnd, message, wParam, lParam);
 302 }
 303
 304 // ----------------------------------------------------------------------------
 305 // creation
 306 // ----------------------------------------------------------------------------
 307
 308 void wxTextCtrl::Init()
 309 {
 310 #if wxUSE_RICHEDIT
 311     m_verRichEdit = 0;
 312 #endif // wxUSE_RICHEDIT
 313
 314 #if wxUSE_INKEDIT && wxUSE_RICHEDIT
 315     m_isInkEdit = 0;
 316 #endif
 317
 318     m_privateContextMenu = NULL;
 319     m_updatesCount = -1;
 320     m_isNativeCaretShown = true;
 321 }
 322
 323 wxTextCtrl::~wxTextCtrl()
 324 {
 325     delete m_privateContextMenu;
 326 }
 327
 328 bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id,
 329                         const wxString& value,
 330                         const wxPoint& pos,
 331                         const wxSize& size,
 332                         long style,
 333                         const wxValidator& validator,
 334                         const wxString& name)
 335 {
 336 #ifdef __WXWINCE__
 337     if ((style & wxBORDER_MASK) == 0)
 338         style |= wxBORDER_SIMPLE;
 339 #endif
 340
 341     // base initialization
 342     if ( !CreateControl(parent, id, pos, size, style, validator, name) )
 343         return false;
 344
 345     // translate wxWin style flags to MSW ones
 346     WXDWORD msStyle = MSWGetCreateWindowFlags();
 347
 348     // do create the control - either an EDIT or RICHEDIT
 349     wxString windowClass = wxT("EDIT");
 350
 351 #if defined(__POCKETPC__) || defined(__SMARTPHONE__)
 352     // A control that capitalizes the first letter
 353     if (style & wxTE_CAPITALIZE)
 354         windowClass = wxT("CAPEDIT");
 355 #endif
 356
 357 #if wxUSE_RICHEDIT
 358     if ( m_windowStyle & wxTE_AUTO_URL )
 359     {
 360         // automatic URL detection only works in RichEdit 2.0+
 361         m_windowStyle |= wxTE_RICH2;
 362     }
 363
 364     if ( m_windowStyle & wxTE_RICH2 )
 365     {
 366         // using richedit 2.0 implies using wxTE_RICH
 367         m_windowStyle |= wxTE_RICH;
 368     }
 369
 370     // we need to load the richedit DLL before creating the rich edit control
 371     if ( m_windowStyle & wxTE_RICH )
 372     {
 373         // versions 2.0, 3.0 and 4.1 of rich edit are mostly compatible with
 374         // each other but not with version 1.0, so we have separate flags for
 375         // the version 1.0 and the others (and so m_verRichEdit may be 0 (plain
 376         // EDIT control), 1 for version 1.0 or 2 for any higher version)
 377         //
 378         // notice that 1.0 has no Unicode support at all so in Unicode build we
 379         // must use another version
 380
 381 #if wxUSE_UNICODE
 382         m_verRichEdit = 2;
 383 #else // !wxUSE_UNICODE
 384         m_verRichEdit = m_windowStyle & wxTE_RICH2 ? 2 : 1;
 385 #endif // wxUSE_UNICODE/!wxUSE_UNICODE
 386
 387 #if wxUSE_INKEDIT
 388         // First test if we can load an ink edit control. Normally, all edit
 389         // controls will be made ink edit controls if a tablet environment is
 390         // found (or if msw.inkedit != 0 and the InkEd.dll is present).
 391         // However, an application can veto ink edit controls by either specifying
 392         // msw.inkedit = 0 or by removing wxTE_RICH[2] from the style.
 393         //
 394         if ((wxSystemSettings::HasFeature(wxSYS_TABLET_PRESENT) || wxSystemOptions::GetOptionInt(wxT("msw.inkedit")) != 0) &&
 395             !(wxSystemOptions::HasOption(wxT("msw.inkedit")) && wxSystemOptions::GetOptionInt(wxT("msw.inkedit")) == 0))
 396         {
 397             if (wxRichEditModule::LoadInkEdit())
 398             {
 399                 windowClass = INKEDIT_CLASS;
 400
 401 #if wxUSE_INKEDIT && wxUSE_RICHEDIT
 402                 m_isInkEdit = 1;
 403 #endif
 404
 405                 // Fake rich text version for other calls
 406                 m_verRichEdit = 2;
 407             }
 408         }
 409 #endif
 410
 411         if (!IsInkEdit())
 412         {
 413             if ( m_verRichEdit == 2 )
 414             {
 415                 if ( wxRichEditModule::Load(wxRichEditModule::Version_41) )
 416                 {
 417                     // yes, class name for version 4.1 really is 5.0
 418                     windowClass = _T("RICHEDIT50W");
 419                 }
 420                 else if ( wxRichEditModule::Load(wxRichEditModule::Version_2or3) )
 421                 {
 422                     windowClass = _T("RichEdit20")
 423 #if wxUSE_UNICODE
 424                                 _T("W");
 425 #else // ANSI
 426                                 _T("A");
 427 #endif // Unicode/ANSI
 428                 }
 429                 else // failed to load msftedit.dll and riched20.dll
 430                 {
 431                     m_verRichEdit = 1;
 432                 }
 433             }
 434
 435             if ( m_verRichEdit == 1 )
 436             {
 437                 if ( wxRichEditModule::Load(wxRichEditModule::Version_1) )
 438                 {
 439                     windowClass = _T("RICHEDIT");
 440                 }
 441                 else // failed to load any richedit control DLL
 442                 {
 443                     // only give the error msg once if the DLL can't be loaded
 444                     static bool s_errorGiven = false; // MT ok as only used by GUI
 445
 446                     if ( !s_errorGiven )
 447                     {
 448                         wxLogError(_("Impossible to create a rich edit control, using simple text control instead. Please reinstall riched32.dll"));
 449
 450                         s_errorGiven = true;
 451                     }
 452
 453                     m_verRichEdit = 0;
 454                 }
 455             }
 456         } // !useInkEdit
 457     }
 458 #endif // wxUSE_RICHEDIT
 459
 460     // we need to turn '\n's into "\r\n"s for the multiline controls
 461     wxString valueWin;
 462     if ( m_windowStyle & wxTE_MULTILINE )
 463     {
 464         valueWin = wxTextFile::Translate(value, wxTextFileType_Dos);
 465     }
 466     else // single line
 467     {
 468         valueWin = value;
 469     }
 470
 471     if ( !MSWCreateControl(windowClass, msStyle, pos, size, valueWin) )
 472         return false;
 473
 474 #if wxUSE_RICHEDIT
 475     if (IsRich())
 476     {
 477 #if wxUSE_INKEDIT
 478         if (IsInkEdit())
 479         {
 480             // Pass IEM_InsertText (0) as wParam, in order to have the ink always
 481             // converted to text.
 482             ::SendMessage(GetHwnd(), EM_SETINKINSERTMODE, 0, 0);
 483
 484             // Make sure the mouse can be used for input
 485             ::SendMessage(GetHwnd(), EM_SETUSEMOUSEFORINPUT, 1, 0);
 486         }
 487 #endif
 488
 489         // enable the events we're interested in: we want to get EN_CHANGE as
 490         // for the normal controls
 491         LPARAM mask = ENM_CHANGE;
 492
 493         if (GetRichVersion() == 1 && !IsInkEdit())
 494         {
 495             // we also need EN_MSGFILTER for richedit 1.0 for the reasons
 496             // explained in its handler
 497            mask |= ENM_MOUSEEVENTS;
 498
 499            // we also need to force the appearance of the vertical scrollbar
 500            // initially as otherwise the control doesn't refresh correctly
 501            // after resize: but once the vertical scrollbar had been shown
 502            // (even if it's subsequently hidden) it does
 503            //
 504            // this is clearly a bug and for now it has been only noticed under
 505            // Windows XP, so if we're sure it works correctly under other
 506            // systems we could do this only for XP
 507            SetSize(-1, 1); // 1 is small enough to force vert scrollbar
 508            SetSize(size);
 509         }
 510         else if ( m_windowStyle & wxTE_AUTO_URL )
 511         {
 512             mask |= ENM_LINK;
 513
 514             ::SendMessage(GetHwnd(), EM_AUTOURLDETECT, TRUE, 0);
 515         }
 516
 517         ::SendMessage(GetHwnd(), EM_SETEVENTMASK, 0, mask);
 518     }
 519 #endif // wxUSE_RICHEDIT
 520
 521     gs_wndprocEdit = wxSetWindowProc((HWND)GetHwnd(),
 522                                      wxTextCtrlWndProc);
 523
 524     return true;
 525 }
 526
 527 // Make sure the window style (etc.) reflects the HWND style (roughly)
 528 void wxTextCtrl::AdoptAttributesFromHWND()
 529 {
 530     wxWindow::AdoptAttributesFromHWND();
 531
 532     HWND hWnd = GetHwnd();
 533     long style = ::GetWindowLong(hWnd, GWL_STYLE);
 534
 535     // retrieve the style to see whether this is an edit or richedit ctrl
 536 #if wxUSE_RICHEDIT
 537     wxString classname = wxGetWindowClass(GetHWND());
 538
 539     if ( classname.IsSameAs(_T("EDIT"), false /* no case */) )
 540     {
 541         m_verRichEdit = 0;
 542     }
 543     else // rich edit?
 544     {
 545         wxChar c;
 546         if ( wxSscanf(classname, _T("RichEdit%d0%c"), &m_verRichEdit, &c) != 2 )
 547         {
 548             wxLogDebug(_T("Unknown edit control '%s'."), classname.c_str());
 549
 550             m_verRichEdit = 0;
 551         }
 552     }
 553 #endif // wxUSE_RICHEDIT
 554
 555     if (style & ES_MULTILINE)
 556         m_windowStyle |= wxTE_MULTILINE;
 557     if (style & ES_PASSWORD)
 558         m_windowStyle |= wxTE_PASSWORD;
 559     if (style & ES_READONLY)
 560         m_windowStyle |= wxTE_READONLY;
 561     if (style & ES_WANTRETURN)
 562         m_windowStyle |= wxTE_PROCESS_ENTER;
 563     if (style & ES_CENTER)
 564         m_windowStyle |= wxTE_CENTRE;
 565     if (style & ES_RIGHT)
 566         m_windowStyle |= wxTE_RIGHT;
 567 }
 568
 569 WXDWORD wxTextCtrl::MSWGetStyle(long style, WXDWORD *exstyle) const
 570 {
 571     long msStyle = wxControl::MSWGetStyle(style, exstyle);
 572
 573     // styles which we alaways add by default
 574     if ( style & wxTE_MULTILINE )
 575     {
 576         wxASSERT_MSG( !(style & wxTE_PROCESS_ENTER),
 577                       wxT("wxTE_PROCESS_ENTER style is ignored for multiline text controls (they always process it)") );
 578
 579         msStyle |= ES_MULTILINE | ES_WANTRETURN;
 580         if ( !(style & wxTE_NO_VSCROLL) )
 581         {
 582             // always adjust the vertical scrollbar automatically if we have it
 583             msStyle |= WS_VSCROLL | ES_AUTOVSCROLL;
 584
 585 #if wxUSE_RICHEDIT
 586             // we have to use this style for the rich edit controls because
 587             // without it the vertical scrollbar never appears at all in
 588             // richedit 3.0 because of our ECO_NOHIDESEL hack (search for it)
 589             if ( style & wxTE_RICH2 )
 590             {
 591                 msStyle |= ES_DISABLENOSCROLL;
 592             }
 593 #endif // wxUSE_RICHEDIT
 594         }
 595
 596         style |= wxTE_PROCESS_ENTER;
 597     }
 598     else // !multiline
 599     {
 600         // there is really no reason to not have this style for single line
 601         // text controls
 602         msStyle |= ES_AUTOHSCROLL;
 603     }
 604
 605     // note that wxTE_DONTWRAP is the same as wxHSCROLL so if we have a horz
 606     // scrollbar, there is no wrapping -- which makes sense
 607     if ( style & wxTE_DONTWRAP )
 608     {
 609         // automatically scroll the control horizontally as necessary
 610         //
 611         // NB: ES_AUTOHSCROLL is needed for richedit controls or they don't
 612         //     show horz scrollbar at all, even in spite of WS_HSCROLL, and as
 613         //     it doesn't seem to do any harm for plain edit controls, add it
 614         //     always
 615         msStyle |= WS_HSCROLL | ES_AUTOHSCROLL;
 616     }
 617
 618     if ( style & wxTE_READONLY )
 619         msStyle |= ES_READONLY;
 620
 621     if ( style & wxTE_PASSWORD )
 622         msStyle |= ES_PASSWORD;
 623
 624     if ( style & wxTE_NOHIDESEL )
 625         msStyle |= ES_NOHIDESEL;
 626
 627     // note that we can't do do "& wxTE_LEFT" as wxTE_LEFT == 0
 628     if ( style & wxTE_CENTRE )
 629         msStyle |= ES_CENTER;
 630     else if ( style & wxTE_RIGHT )
 631         msStyle |= ES_RIGHT;
 632     else
 633         msStyle |= ES_LEFT; // ES_LEFT is 0 as well but for consistency...
 634
 635     return msStyle;
 636 }
 637
 638 void wxTextCtrl::SetWindowStyleFlag(long style)
 639 {
 640 #if wxUSE_RICHEDIT
 641     // we have to deal with some styles separately because they can't be
 642     // changed by simply calling SetWindowLong(GWL_STYLE) but can be changed
 643     // using richedit-specific EM_SETOPTIONS
 644     if ( IsRich() &&
 645             ((style & wxTE_NOHIDESEL) != (GetWindowStyle() & wxTE_NOHIDESEL)) )
 646     {
 647         bool set = (style & wxTE_NOHIDESEL) != 0;
 648
 649         ::SendMessage(GetHwnd(), EM_SETOPTIONS, set ? ECOOP_OR : ECOOP_AND,
 650                       set ? ECO_NOHIDESEL : ~ECO_NOHIDESEL);
 651     }
 652 #endif // wxUSE_RICHEDIT
 653
 654     wxControl::SetWindowStyleFlag(style);
 655 }
 656
 657 // ----------------------------------------------------------------------------
 658 // set/get the controls text
 659 // ----------------------------------------------------------------------------
 660
 661 wxString wxTextCtrl::GetValue() const
 662 {
 663     // range 0..-1 is special for GetRange() and means to retrieve all text
 664     return GetRange(0, -1);
 665 }
 666
 667 wxString wxTextCtrl::GetRange(long from, long to) const
 668 {
 669     wxString str;
 670
 671     if ( from >= to && to != -1 )
 672     {
 673         // nothing to retrieve
 674         return str;
 675     }
 676
 677 #if wxUSE_RICHEDIT
 678     if ( IsRich() )
 679     {
 680         int len = GetWindowTextLength(GetHwnd());
 681         if ( len > from )
 682         {
 683             if ( to == -1 )
 684                 to = len;
 685
 686 #if !wxUSE_UNICODE
 687             // we must use EM_STREAMOUT if we don't want to lose all characters
 688             // not representable in the current character set (EM_GETTEXTRANGE
 689             // simply replaces them with question marks...)
 690             if ( GetRichVersion() > 1 )
 691             {
 692                 // we must have some encoding, otherwise any 8bit chars in the
 693                 // control are simply *lost* (replaced by '?')
 694                 wxFontEncoding encoding = wxFONTENCODING_SYSTEM;
 695
 696                 wxFont font = m_defaultStyle.GetFont();
 697                 if ( !font.Ok() )
 698                     font = GetFont();
 699
 700                 if ( font.Ok() )
 701                 {
 702                    encoding = font.GetEncoding();
 703                 }
 704
 705                 if ( encoding == wxFONTENCODING_SYSTEM )
 706                 {
 707                     encoding = wxLocale::GetSystemEncoding();
 708                 }
 709
 710                 if ( encoding == wxFONTENCODING_SYSTEM )
 711                 {
 712                     encoding = wxFONTENCODING_ISO8859_1;
 713                 }
 714
 715                 str = StreamOut(encoding);
 716
 717                 if ( !str.empty() )
 718                 {
 719                     // we have to manually extract the required part, luckily
 720                     // this is easy in this case as EOL characters in str are
 721                     // just LFs because we remove CRs in wxRichEditStreamOut
 722                     str = str.Mid(from, to - from);
 723                 }
 724             }
 725
 726             // StreamOut() wasn't used or failed, try to do it in normal way
 727             if ( str.empty() )
 728 #endif // !wxUSE_UNICODE
 729             {
 730                 // alloc one extra WORD as needed by the control
 731                 wxStringBuffer tmp(str, ++len);
 732                 wxChar *p = tmp;
 733
 734                 TEXTRANGE textRange;
 735                 textRange.chrg.cpMin = from;
 736                 textRange.chrg.cpMax = to;
 737                 textRange.lpstrText = p;
 738
 739                 (void)::SendMessage(GetHwnd(), EM_GETTEXTRANGE,
 740                                     0, (LPARAM)&textRange);
 741
 742                 if ( m_verRichEdit > 1 )
 743                 {
 744                     // RichEdit 2.0 uses just CR ('\r') for the
 745                     // newlines which is neither Unix nor Windows
 746                     // style - convert it to something reasonable
 747                     for ( ; *p; p++ )
 748                     {
 749                         if ( *p == _T('\r') )
 750                             *p = _T('\n');
 751                     }
 752                 }
 753             }
 754
 755             if ( m_verRichEdit == 1 )
 756             {
 757                 // convert to the canonical form - see comment below
 758                 str = wxTextFile::Translate(str, wxTextFileType_Unix);
 759             }
 760         }
 761         //else: no text at all, leave the string empty
 762     }
 763     else
 764 #endif // wxUSE_RICHEDIT
 765     {
 766         // retrieve all text
 767         str = wxGetWindowText(GetHWND());
 768
 769         // need only a range?
 770         if ( from < to )
 771         {
 772             str = str.Mid(from, to - from);
 773         }
 774
 775         // WM_GETTEXT uses standard DOS CR+LF (\r\n) convention - convert to the
 776         // canonical one (same one as above) for consistency with the other kinds
 777         // of controls and, more importantly, with the other ports
 778         str = wxTextFile::Translate(str, wxTextFileType_Unix);
 779     }
 780
 781     return str;
 782 }
 783
 784 void wxTextCtrl::SetValue(const wxString& value)
 785 {
 786     // if the text is long enough, it's faster to just set it instead of first
 787     // comparing it with the old one (chances are that it will be different
 788     // anyhow, this comparison is there to avoid flicker for small single-line
 789     // edit controls mostly)
 790     if ( (value.length() > 0x400) || (value != GetValue()) )
 791     {
 792         DoWriteText(value, false /* not selection only */);
 793
 794         // mark the control as being not dirty - we changed its text, not the
 795         // user
 796         DiscardEdits();
 797
 798         // for compatibility, don't move the cursor when doing SetValue()
 799         SetInsertionPoint(0);
 800     }
 801     else // same text
 802     {
 803         // still reset the modified flag even if the value didn't really change
 804         // because now it comes from the program and not the user (and do it
 805         // before generating the event so that the event handler could get the
 806         // expected value from IsModified())
 807         DiscardEdits();
 808
 809         // still send an event for consistency
 810         SendUpdateEvent();
 811     }
 812 }
 813
 814 #if wxUSE_RICHEDIT && (!wxUSE_UNICODE || wxUSE_UNICODE_MSLU)
 815
 816 // TODO: using memcpy() would improve performance a lot for big amounts of text
 817
 818 DWORD CALLBACK
 819 wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb)
 820 {
 821     *pcb = 0;
 822
 823     const wchar_t ** const ppws = (const wchar_t **)dwCookie;
 824
 825     wchar_t *wbuf = (wchar_t *)buf;
 826     const wchar_t *wpc = *ppws;
 827     while ( cb && *wpc )
 828     {
 829         *wbuf++ = *wpc++;
 830
 831         cb -= sizeof(wchar_t);
 832         (*pcb) += sizeof(wchar_t);
 833     }
 834
 835     *ppws = wpc;
 836
 837     return 0;
 838 }
 839
 840 // helper struct used to pass parameters from wxTextCtrl to wxRichEditStreamOut
 841 struct wxStreamOutData
 842 {
 843     wchar_t *wpc;
 844     size_t len;
 845 };
 846
 847 DWORD CALLBACK
 848 wxRichEditStreamOut(DWORD_PTR dwCookie, BYTE *buf, LONG cb, LONG *pcb)
 849 {
 850     *pcb = 0;
 851
 852     wxStreamOutData *data = (wxStreamOutData *)dwCookie;
 853
 854     const wchar_t *wbuf = (const wchar_t *)buf;
 855     wchar_t *wpc = data->wpc;
 856     while ( cb )
 857     {
 858         wchar_t wch = *wbuf++;
 859
 860         // turn "\r\n" into "\n" on the fly
 861         if ( wch != L'\r' )
 862             *wpc++ = wch;
 863         else
 864             data->len--;
 865
 866         cb -= sizeof(wchar_t);
 867         (*pcb) += sizeof(wchar_t);
 868     }
 869
 870     data->wpc = wpc;
 871
 872     return 0;
 873 }
 874
 875
 876 #if wxUSE_UNICODE_MSLU
 877     #define UNUSED_IF_MSLU(param)
 878 #else
 879     #define UNUSED_IF_MSLU(param) param
 880 #endif
 881
 882 bool
 883 wxTextCtrl::StreamIn(const wxString& value,
 884                      wxFontEncoding UNUSED_IF_MSLU(encoding),
 885                      bool selectionOnly)
 886 {
 887 #if wxUSE_UNICODE_MSLU
 888     const wchar_t *wpc = value.c_str();
 889 #else // !wxUSE_UNICODE_MSLU
 890     wxCSConv conv(encoding);
 891
 892     const size_t len = conv.MB2WC(NULL, value, value.length());
 893
 894 #if wxUSE_WCHAR_T
 895     wxWCharBuffer wchBuf(len);
 896     wchar_t *wpc = wchBuf.data();
 897 #else
 898     wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
 899     wchar_t *wpc = wchBuf;
 900 #endif
 901
 902     conv.MB2WC(wpc, value, value.length());
 903 #endif // wxUSE_UNICODE_MSLU
 904
 905     // finally, stream it in the control
 906     EDITSTREAM eds;
 907     wxZeroMemory(eds);
 908     eds.dwCookie = (DWORD)&wpc;
 909     // the cast below is needed for broken (very) old mingw32 headers
 910     eds.pfnCallback = (EDITSTREAMCALLBACK)wxRichEditStreamIn;
 911
 912     // same problem as in DoWriteText(): we can get multiple events here
 913     UpdatesCountFilter ucf(m_updatesCount);
 914
 915     ::SendMessage(GetHwnd(), EM_STREAMIN,
 916                   SF_TEXT |
 917                   SF_UNICODE |
 918                   (selectionOnly ? SFF_SELECTION : 0),
 919                   (LPARAM)&eds);
 920
 921     // It's okay for EN_UPDATE to not be sent if the selection is empty and
 922     // the text is empty, otherwise warn the programmer about it.
 923     wxASSERT_MSG( ucf.GotUpdate() || ( !HasSelection() && value.empty() ),
 924                   _T("EM_STREAMIN didn't send EN_UPDATE?") );
 925
 926     if ( eds.dwError )
 927     {
 928         wxLogLastError(_T("EM_STREAMIN"));
 929     }
 930
 931 #if !wxUSE_WCHAR_T
 932     free(wchBuf);
 933 #endif // !wxUSE_WCHAR_T
 934
 935     return true;
 936 }
 937
 938 #if !wxUSE_UNICODE_MSLU
 939
 940 wxString
 941 wxTextCtrl::StreamOut(wxFontEncoding encoding, bool selectionOnly) const
 942 {
 943     wxString out;
 944
 945     const int len = GetWindowTextLength(GetHwnd());
 946
 947 #if wxUSE_WCHAR_T
 948     wxWCharBuffer wchBuf(len);
 949     wchar_t *wpc = wchBuf.data();
 950 #else
 951     wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
 952     wchar_t *wpc = wchBuf;
 953 #endif
 954
 955     wxStreamOutData data;
 956     data.wpc = wpc;
 957     data.len = len;
 958
 959     EDITSTREAM eds;
 960     wxZeroMemory(eds);
 961     eds.dwCookie = (DWORD)&data;
 962     eds.pfnCallback = wxRichEditStreamOut;
 963
 964     ::SendMessage
 965       (
 966         GetHwnd(),
 967         EM_STREAMOUT,
 968         SF_TEXT | SF_UNICODE | (selectionOnly ? SFF_SELECTION : 0),
 969         (LPARAM)&eds
 970       );
 971
 972     if ( eds.dwError )
 973     {
 974         wxLogLastError(_T("EM_STREAMOUT"));
 975     }
 976     else // streamed out ok
 977     {
 978         // NUL-terminate the string because its length could have been
 979         // decreased by wxRichEditStreamOut
 980         *(wchBuf.data() + data.len) = L'\0';
 981
 982         // now convert to the given encoding (this is a possibly lossful
 983         // conversion but what else can we do)
 984         wxCSConv conv(encoding);
 985         size_t lenNeeded = conv.WC2MB(NULL, wchBuf, 0);
 986         if ( lenNeeded++ )
 987         {
 988             conv.WC2MB(wxStringBuffer(out, lenNeeded), wchBuf, lenNeeded);
 989         }
 990     }
 991
 992 #if !wxUSE_WCHAR_T
 993     free(wchBuf);
 994 #endif // !wxUSE_WCHAR_T
 995
 996     return out;
 997 }
 998
 999 #endif // !wxUSE_UNICODE_MSLU
1000
1001 #endif // wxUSE_RICHEDIT
1002
1003 void wxTextCtrl::WriteText(const wxString& value)
1004 {
1005     DoWriteText(value);
1006 }
1007
1008 void wxTextCtrl::DoWriteText(const wxString& value, bool selectionOnly)
1009 {
1010     wxString valueDos;
1011     if ( m_windowStyle & wxTE_MULTILINE )
1012         valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
1013     else
1014         valueDos = value;
1015
1016 #if wxUSE_RICHEDIT
1017     // there are several complications with the rich edit controls here
1018     bool done = false;
1019     if ( IsRich() )
1020     {
1021         // first, ensure that the new text will be in the default style
1022         if ( !m_defaultStyle.IsDefault() )
1023         {
1024             long start, end;
1025             GetSelection(&start, &end);
1026             SetStyle(start, end, m_defaultStyle);
1027         }
1028
1029 #if wxUSE_UNICODE_MSLU
1030         // RichEdit doesn't have Unicode version of EM_REPLACESEL on Win9x,
1031         // but EM_STREAMIN works
1032         if ( wxUsingUnicowsDll() && GetRichVersion() > 1 )
1033         {
1034            done = StreamIn(valueDos, wxFONTENCODING_SYSTEM, selectionOnly);
1035         }
1036 #endif // wxUSE_UNICODE_MSLU
1037
1038 #if !wxUSE_UNICODE
1039         // next check if the text we're inserting must be shown in a non
1040         // default charset -- this only works for RichEdit > 1.0
1041         if ( GetRichVersion() > 1 )
1042         {
1043             wxFont font = m_defaultStyle.GetFont();
1044             if ( !font.Ok() )
1045                 font = GetFont();
1046
1047             if ( font.Ok() )
1048             {
1049                wxFontEncoding encoding = font.GetEncoding();
1050                if ( encoding != wxFONTENCODING_SYSTEM )
1051                {
1052                    // we have to use EM_STREAMIN to force richedit control 2.0+
1053                    // to show any text in the non default charset -- otherwise
1054                    // it thinks it knows better than we do and always shows it
1055                    // in the default one
1056                    done = StreamIn(valueDos, encoding, selectionOnly);
1057                }
1058             }
1059         }
1060 #endif // !wxUSE_UNICODE
1061     }
1062
1063     if ( !done )
1064 #endif // wxUSE_RICHEDIT
1065     {
1066         // in some cases we get 2 EN_CHANGE notifications after the SendMessage
1067         // call (this happens for plain EDITs with EM_REPLACESEL and under some
1068         // -- undetermined -- conditions with rich edit) and sometimes we don't
1069         // get any events at all (plain EDIT with WM_SETTEXT), so ensure that
1070         // we generate exactly one of them by ignoring all but the first one in
1071         // SendUpdateEvent() and generating one ourselves if we hadn't got any
1072         // notifications from Windows
1073         UpdatesCountFilter ucf(m_updatesCount);
1074
1075         ::SendMessage(GetHwnd(), selectionOnly ? EM_REPLACESEL : WM_SETTEXT,
1076                       // EM_REPLACESEL takes 1 to indicate the operation should be redoable
1077                       selectionOnly ? 1 : 0, (LPARAM)valueDos.c_str());
1078
1079         if ( !ucf.GotUpdate() )
1080         {
1081             SendUpdateEvent();
1082         }
1083     }
1084 }
1085
1086 void wxTextCtrl::AppendText(const wxString& text)
1087 {
1088     SetInsertionPointEnd();
1089
1090     WriteText(text);
1091
1092 #if wxUSE_RICHEDIT
1093     // don't do this if we're frozen, saves some time
1094     if ( !IsFrozen() && IsMultiLine() && GetRichVersion() > 1 )
1095     {
1096         // setting the caret to the end and showing it simply doesn't work for
1097         // RichEdit 2.0 -- force it to still do what we want
1098         ::SendMessage(GetHwnd(), EM_LINESCROLL, 0, GetNumberOfLines());
1099     }
1100 #endif // wxUSE_RICHEDIT
1101 }
1102
1103 void wxTextCtrl::Clear()
1104 {
1105     ::SetWindowText(GetHwnd(), wxEmptyString);
1106
1107 #if wxUSE_RICHEDIT
1108     if ( !IsRich() )
1109 #endif // wxUSE_RICHEDIT
1110     {
1111         // rich edit controls send EN_UPDATE from WM_SETTEXT handler themselves
1112         // but the normal ones don't -- make Clear() behaviour consistent by
1113         // always sending this event
1114
1115         // Windows already sends an update event for single-line
1116         // controls.
1117         if ( m_windowStyle & wxTE_MULTILINE )
1118             SendUpdateEvent();
1119     }
1120 }
1121
1122 #ifdef __WIN32__
1123
1124 bool wxTextCtrl::EmulateKeyPress(const wxKeyEvent& event)
1125 {
1126     SetFocus();
1127
1128     size_t lenOld = GetValue().length();
1129
1130     wxUint32 code = event.GetRawKeyCode();
1131     ::keybd_event((BYTE)code, 0, 0 /* key press */, 0);
1132     ::keybd_event((BYTE)code, 0, KEYEVENTF_KEYUP, 0);
1133
1134     // assume that any alphanumeric key changes the total number of characters
1135     // in the control - this should work in 99% of cases
1136     return GetValue().length() != lenOld;
1137 }
1138
1139 #endif // __WIN32__
1140
1141 // ----------------------------------------------------------------------------
1142 // Clipboard operations
1143 // ----------------------------------------------------------------------------
1144
1145 void wxTextCtrl::Copy()
1146 {
1147     if (CanCopy())
1148     {
1149         ::SendMessage(GetHwnd(), WM_COPY, 0, 0L);
1150     }
1151 }
1152
1153 void wxTextCtrl::Cut()
1154 {
1155     if (CanCut())
1156     {
1157         ::SendMessage(GetHwnd(), WM_CUT, 0, 0L);
1158     }
1159 }
1160
1161 void wxTextCtrl::Paste()
1162 {
1163     if (CanPaste())
1164     {
1165         ::SendMessage(GetHwnd(), WM_PASTE, 0, 0L);
1166     }
1167 }
1168
1169 bool wxTextCtrl::HasSelection() const
1170 {
1171     long from, to;
1172     GetSelection(&from, &to);
1173     return from != to;
1174 }
1175
1176 bool wxTextCtrl::CanCopy() const
1177 {
1178     // Can copy if there's a selection
1179     return HasSelection();
1180 }
1181
1182 bool wxTextCtrl::CanCut() const
1183 {
1184     return CanCopy() && IsEditable();
1185 }
1186
1187 bool wxTextCtrl::CanPaste() const
1188 {
1189     if ( !IsEditable() )
1190         return false;
1191
1192 #if wxUSE_RICHEDIT
1193     if ( IsRich() )
1194     {
1195         UINT cf = 0; // 0 == any format
1196
1197         return ::SendMessage(GetHwnd(), EM_CANPASTE, cf, 0) != 0;
1198     }
1199 #endif // wxUSE_RICHEDIT
1200
1201     // Standard edit control: check for straight text on clipboard
1202     if ( !::OpenClipboard(GetHwndOf(wxTheApp->GetTopWindow())) )
1203         return false;
1204
1205     bool isTextAvailable = ::IsClipboardFormatAvailable(CF_TEXT) != 0;
1206     ::CloseClipboard();
1207
1208     return isTextAvailable;
1209 }
1210
1211 // ----------------------------------------------------------------------------
1212 // Accessors
1213 // ----------------------------------------------------------------------------
1214
1215 void wxTextCtrl::SetEditable(bool editable)
1216 {
1217     HWND hWnd = GetHwnd();
1218     ::SendMessage(hWnd, EM_SETREADONLY, (WPARAM)!editable, (LPARAM)0L);
1219 }
1220
1221 void wxTextCtrl::SetInsertionPoint(long pos)
1222 {
1223     DoSetSelection(pos, pos);
1224 }
1225
1226 void wxTextCtrl::SetInsertionPointEnd()
1227 {
1228     // we must not do anything if the caret is already there because calling
1229     // SetInsertionPoint() thaws the controls if Freeze() had been called even
1230     // if it doesn't actually move the caret anywhere and so the simple fact of
1231     // doing it results in horrible flicker when appending big amounts of text
1232     // to the control in a few chunks (see DoAddText() test in the text sample)
1233     const wxTextPos lastPosition = GetLastPosition();
1234     if ( GetInsertionPoint() == lastPosition )
1235     {
1236         return;
1237     }
1238
1239     long pos;
1240
1241 #if wxUSE_RICHEDIT
1242     if ( m_verRichEdit == 1 )
1243     {
1244         // we don't have to waste time calling GetLastPosition() in this case
1245         pos = -1;
1246     }
1247     else // !RichEdit 1.0
1248 #endif // wxUSE_RICHEDIT
1249     {
1250         pos = lastPosition;
1251     }
1252
1253     SetInsertionPoint(pos);
1254 }
1255
1256 long wxTextCtrl::GetInsertionPoint() const
1257 {
1258 #if wxUSE_RICHEDIT
1259     if ( IsRich() )
1260     {
1261         CHARRANGE range;
1262         range.cpMin = 0;
1263         range.cpMax = 0;
1264         ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
1265         return range.cpMin;
1266     }
1267 #endif // wxUSE_RICHEDIT
1268
1269     DWORD Pos = (DWORD)::SendMessage(GetHwnd(), EM_GETSEL, 0, 0L);
1270     return Pos & 0xFFFF;
1271 }
1272
1273 wxTextPos wxTextCtrl::GetLastPosition() const
1274 {
1275     int numLines = GetNumberOfLines();
1276     long posStartLastLine = XYToPosition(0, numLines - 1);
1277
1278     long lenLastLine = GetLengthOfLineContainingPos(posStartLastLine);
1279
1280     return posStartLastLine + lenLastLine;
1281 }
1282
1283 // If the return values from and to are the same, there is no
1284 // selection.
1285 void wxTextCtrl::GetSelection(long* from, long* to) const
1286 {
1287 #if wxUSE_RICHEDIT
1288     if ( IsRich() )
1289     {
1290         CHARRANGE charRange;
1291         ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &charRange);
1292
1293         *from = charRange.cpMin;
1294         *to = charRange.cpMax;
1295     }
1296     else
1297 #endif // !wxUSE_RICHEDIT
1298     {
1299         DWORD dwStart, dwEnd;
1300         ::SendMessage(GetHwnd(), EM_GETSEL, (WPARAM)&dwStart, (LPARAM)&dwEnd);
1301
1302         *from = dwStart;
1303         *to = dwEnd;
1304     }
1305 }
1306
1307 bool wxTextCtrl::IsEditable() const
1308 {
1309     // strangely enough, we may be called before the control is created: our
1310     // own Create() calls MSWGetStyle() which calls AcceptsFocus() which calls
1311     // us
1312     if ( !m_hWnd )
1313         return true;
1314
1315     long style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1316
1317     return (style & ES_READONLY) == 0;
1318 }
1319
1320 // ----------------------------------------------------------------------------
1321 // selection
1322 // ----------------------------------------------------------------------------
1323
1324 void wxTextCtrl::SetSelection(long from, long to)
1325 {
1326     // if from and to are both -1, it means (in wxWidgets) that all text should
1327     // be selected - translate into Windows convention
1328     if ( (from == -1) && (to == -1) )
1329     {
1330         from = 0;
1331         to = -1;
1332     }
1333
1334     DoSetSelection(from, to);
1335 }
1336
1337 void wxTextCtrl::DoSetSelection(long from, long to, bool scrollCaret)
1338 {
1339     HWND hWnd = GetHwnd();
1340
1341 #if wxUSE_RICHEDIT
1342     if ( IsRich() )
1343     {
1344         CHARRANGE range;
1345         range.cpMin = from;
1346         range.cpMax = to;
1347         ::SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM) &range);
1348     }
1349     else
1350 #endif // wxUSE_RICHEDIT
1351     {
1352         ::SendMessage(hWnd, EM_SETSEL, (WPARAM)from, (LPARAM)to);
1353     }
1354
1355     if ( scrollCaret && !IsFrozen() )
1356     {
1357 #if wxUSE_RICHEDIT
1358         // richedit 3.0 (i.e. the version living in riched20.dll distributed
1359         // with Windows 2000 and beyond) doesn't honour EM_SCROLLCARET when
1360         // emulating richedit 2.0 unless the control has focus or ECO_NOHIDESEL
1361         // option is set (but it does work ok in richedit 1.0 mode...)
1362         //
1363         // so to make it work we either need to give focus to it here which
1364         // will probably create many problems (dummy focus events; window
1365         // containing the text control being brought to foreground
1366         // unexpectedly; ...) or to temporarily set ECO_NOHIDESEL which may
1367         // create other problems too -- and in fact it does because if we turn
1368         // on/off this style while appending the text to the control, the
1369         // vertical scrollbar never appears in it even if we append tons of
1370         // text and to work around this the only solution I found was to use
1371         // ES_DISABLENOSCROLL
1372         //
1373         // this is very ugly but I don't see any other way to make this work
1374         long style = 0;
1375         if ( GetRichVersion() > 1 )
1376         {
1377             if ( !HasFlag(wxTE_NOHIDESEL) )
1378             {
1379                 // setting ECO_NOHIDESEL also sets WS_VISIBLE and possibly
1380                 // others, remember the style so we can reset it later if needed
1381                 style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1382                 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1383                               ECOOP_OR, ECO_NOHIDESEL);
1384             }
1385             //else: everything is already ok
1386         }
1387 #endif // wxUSE_RICHEDIT
1388
1389         ::SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
1390
1391 #if wxUSE_RICHEDIT
1392         // restore ECO_NOHIDESEL if we changed it
1393         if ( GetRichVersion() > 1 && !HasFlag(wxTE_NOHIDESEL) )
1394         {
1395             ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1396                           ECOOP_AND, ~ECO_NOHIDESEL);
1397             if ( style != ::GetWindowLong(GetHwnd(), GWL_STYLE) )
1398                 ::SetWindowLong(GetHwnd(), GWL_STYLE, style);
1399         }
1400 #endif // wxUSE_RICHEDIT
1401     }
1402 }
1403
1404 // ----------------------------------------------------------------------------
1405 // Working with files
1406 // ----------------------------------------------------------------------------
1407
1408 bool wxTextCtrl::DoLoadFile(const wxString& file, int fileType)
1409 {
1410     if ( wxTextCtrlBase::DoLoadFile(file, fileType) )
1411     {
1412         // update the size limit if needed
1413         AdjustSpaceLimit();
1414
1415         return true;
1416     }
1417
1418     return false;
1419 }
1420
1421 // ----------------------------------------------------------------------------
1422 // Editing
1423 // ----------------------------------------------------------------------------
1424
1425 void wxTextCtrl::Replace(long from, long to, const wxString& value)
1426 {
1427     // Set selection and remove it
1428     DoSetSelection(from, to, false /* don't scroll caret into view */);
1429
1430     DoWriteText(value, true /* selection only */);
1431 }
1432
1433 void wxTextCtrl::Remove(long from, long to)
1434 {
1435     Replace(from, to, wxEmptyString);
1436 }
1437
1438 bool wxTextCtrl::IsModified() const
1439 {
1440     return ::SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0;
1441 }
1442
1443 void wxTextCtrl::MarkDirty()
1444 {
1445     ::SendMessage(GetHwnd(), EM_SETMODIFY, TRUE, 0L);
1446 }
1447
1448 void wxTextCtrl::DiscardEdits()
1449 {
1450     ::SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0L);
1451 }
1452
1453 int wxTextCtrl::GetNumberOfLines() const
1454 {
1455     return (int)::SendMessage(GetHwnd(), EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0);
1456 }
1457
1458 // ----------------------------------------------------------------------------
1459 // Positions <-> coords
1460 // ----------------------------------------------------------------------------
1461
1462 long wxTextCtrl::XYToPosition(long x, long y) const
1463 {
1464     // This gets the char index for the _beginning_ of this line
1465     long charIndex = ::SendMessage(GetHwnd(), EM_LINEINDEX, (WPARAM)y, (LPARAM)0);
1466
1467     return charIndex + x;
1468 }
1469
1470 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
1471 {
1472     HWND hWnd = GetHwnd();
1473
1474     // This gets the line number containing the character
1475     long lineNo;
1476 #if wxUSE_RICHEDIT
1477     if ( IsRich() )
1478     {
1479         lineNo = ::SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, (LPARAM)pos);
1480     }
1481     else
1482 #endif // wxUSE_RICHEDIT
1483     {
1484         lineNo = ::SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, 0);
1485     }
1486
1487     if ( lineNo == -1 )
1488     {
1489         // no such line
1490         return false;
1491     }
1492
1493     // This gets the char index for the _beginning_ of this line
1494     long charIndex = ::SendMessage(hWnd, EM_LINEINDEX, (WPARAM)lineNo, (LPARAM)0);
1495     if ( charIndex == -1 )
1496     {
1497         return false;
1498     }
1499
1500     // The X position must therefore be the different between pos and charIndex
1501     if ( x )
1502         *x = pos - charIndex;
1503     if ( y )
1504         *y = lineNo;
1505
1506     return true;
1507 }
1508
1509 wxTextCtrlHitTestResult
1510 wxTextCtrl::HitTest(const wxPoint& pt, long *posOut) const
1511 {
1512     // first get the position from Windows
1513     LPARAM lParam;
1514
1515 #if wxUSE_RICHEDIT
1516     POINTL ptl;
1517     if ( IsRich() )
1518     {
1519         // for rich edit controls the position is passed iva the struct fields
1520         ptl.x = pt.x;
1521         ptl.y = pt.y;
1522         lParam = (LPARAM)&ptl;
1523     }
1524     else
1525 #endif // wxUSE_RICHEDIT
1526     {
1527         // for the plain ones, we are limited to 16 bit positions which are
1528         // combined in a single 32 bit value
1529         lParam = MAKELPARAM(pt.x, pt.y);
1530     }
1531
1532     LRESULT pos = ::SendMessage(GetHwnd(), EM_CHARFROMPOS, 0, lParam);
1533
1534     if ( pos == -1 )
1535     {
1536         // this seems to indicate an error...
1537         return wxTE_HT_UNKNOWN;
1538     }
1539
1540 #if wxUSE_RICHEDIT
1541     if ( !IsRich() )
1542 #endif // wxUSE_RICHEDIT
1543     {
1544         // for plain EDIT controls the higher word contains something else
1545         pos = LOWORD(pos);
1546     }
1547
1548
1549     // next determine where it is relatively to our point: EM_CHARFROMPOS
1550     // always returns the closest character but we need to be more precise, so
1551     // double check that we really are where it pretends
1552     POINTL ptReal;
1553
1554 #if wxUSE_RICHEDIT
1555     // FIXME: we need to distinguish between richedit 2 and 3 here somehow but
1556     //        we don't know how to do it
1557     if ( IsRich() )
1558     {
1559         ::SendMessage(GetHwnd(), EM_POSFROMCHAR, (WPARAM)&ptReal, pos);
1560     }
1561     else
1562 #endif // wxUSE_RICHEDIT
1563     {
1564         LRESULT lRc = ::SendMessage(GetHwnd(), EM_POSFROMCHAR, pos, 0);
1565
1566         if ( lRc == -1 )
1567         {
1568             // this is apparently returned when pos corresponds to the last
1569             // position
1570             ptReal.x =
1571             ptReal.y = 0;
1572         }
1573         else
1574         {
1575             ptReal.x = LOWORD(lRc);
1576             ptReal.y = HIWORD(lRc);
1577         }
1578     }
1579
1580     wxTextCtrlHitTestResult rc;
1581
1582     if ( pt.y > ptReal.y + GetCharHeight() )
1583         rc = wxTE_HT_BELOW;
1584     else if ( pt.x > ptReal.x + GetCharWidth() )
1585         rc = wxTE_HT_BEYOND;
1586     else
1587         rc = wxTE_HT_ON_TEXT;
1588
1589     if ( posOut )
1590         *posOut = pos;
1591
1592     return rc;
1593 }
1594
1595 // ----------------------------------------------------------------------------
1596 //
1597 // ----------------------------------------------------------------------------
1598
1599 void wxTextCtrl::ShowPosition(long pos)
1600 {
1601     HWND hWnd = GetHwnd();
1602
1603     // To scroll to a position, we pass the number of lines and characters
1604     // to scroll *by*. This means that we need to:
1605     // (1) Find the line position of the current line.
1606     // (2) Find the line position of pos.
1607     // (3) Scroll by (pos - current).
1608     // For now, ignore the horizontal scrolling.
1609
1610     // Is this where scrolling is relative to - the line containing the caret?
1611     // Or is the first visible line??? Try first visible line.
1612 //    int currentLineLineNo1 = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)-1, (LPARAM)0L);
1613
1614     int currentLineLineNo = (int)::SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, (WPARAM)0, (LPARAM)0L);
1615
1616     int specifiedLineLineNo = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, (LPARAM)0L);
1617
1618     int linesToScroll = specifiedLineLineNo - currentLineLineNo;
1619
1620     if (linesToScroll != 0)
1621       (void)::SendMessage(hWnd, EM_LINESCROLL, (WPARAM)0, (LPARAM)linesToScroll);
1622 }
1623
1624 long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const
1625 {
1626     return ::SendMessage(GetHwnd(), EM_LINELENGTH, (WPARAM)pos, 0);
1627 }
1628
1629 int wxTextCtrl::GetLineLength(long lineNo) const
1630 {
1631     long pos = XYToPosition(0, lineNo);
1632
1633     return GetLengthOfLineContainingPos(pos);
1634 }
1635
1636 wxString wxTextCtrl::GetLineText(long lineNo) const
1637 {
1638     size_t len = (size_t)GetLineLength(lineNo) + 1;
1639
1640     // there must be at least enough place for the length WORD in the
1641     // buffer
1642     len += sizeof(WORD);
1643
1644     wxString str;
1645     {
1646         wxStringBufferLength tmp(str, len);
1647         wxChar *buf = tmp;
1648
1649         *(WORD *)buf = (WORD)len;
1650         len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf);
1651
1652 #if wxUSE_RICHEDIT
1653         if ( IsRich() )
1654         {
1655             // remove the '\r' returned by the rich edit control, the user code
1656             // should never see it
1657             if ( buf[len - 2] == _T('\r') && buf[len - 1] == _T('\n') )
1658             {
1659                 buf[len - 2] = _T('\n');
1660                 len--;
1661             }
1662         }
1663 #endif // wxUSE_RICHEDIT
1664
1665         // remove the '\n' at the end, if any (this is how this function is
1666         // supposed to work according to the docs)
1667         if ( buf[len - 1] == _T('\n') )
1668         {
1669             len--;
1670         }
1671
1672         buf[len] = 0;
1673         tmp.SetLength(len);
1674     }
1675
1676     return str;
1677 }
1678
1679 void wxTextCtrl::SetMaxLength(unsigned long len)
1680 {
1681 #if wxUSE_RICHEDIT
1682     if ( IsRich() )
1683     {
1684         ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, len ? len : 0x7fffffff);
1685     }
1686     else
1687 #endif // wxUSE_RICHEDIT
1688     {
1689         if ( len >= 0xffff )
1690         {
1691             // this will set it to a platform-dependent maximum (much more
1692             // than 64Kb under NT)
1693             len = 0;
1694         }
1695
1696         ::SendMessage(GetHwnd(), EM_LIMITTEXT, len, 0);
1697     }
1698 }
1699
1700 // ----------------------------------------------------------------------------
1701 // Undo/redo
1702 // ----------------------------------------------------------------------------
1703
1704 void wxTextCtrl::Undo()
1705 {
1706     if (CanUndo())
1707     {
1708         ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1709     }
1710 }
1711
1712 void wxTextCtrl::Redo()
1713 {
1714     if (CanRedo())
1715     {
1716 #if wxUSE_RICHEDIT
1717         if (GetRichVersion() > 1)
1718             ::SendMessage(GetHwnd(), EM_REDO, 0, 0);
1719         else
1720 #endif
1721         // Same as Undo, since Undo undoes the undo, i.e. a redo.
1722         ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1723     }
1724 }
1725
1726 bool wxTextCtrl::CanUndo() const
1727 {
1728     return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1729 }
1730
1731 bool wxTextCtrl::CanRedo() const
1732 {
1733 #if wxUSE_RICHEDIT
1734     if (GetRichVersion() > 1)
1735         return ::SendMessage(GetHwnd(), EM_CANREDO, 0, 0) != 0;
1736     else
1737 #endif
1738     return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1739 }
1740
1741 // ----------------------------------------------------------------------------
1742 // caret handling (Windows only)
1743 // ----------------------------------------------------------------------------
1744
1745 bool wxTextCtrl::ShowNativeCaret(bool show)
1746 {
1747     if ( show != m_isNativeCaretShown )
1748     {
1749         if ( !(show ? ::ShowCaret(GetHwnd()) : ::HideCaret(GetHwnd())) )
1750         {
1751             // not an error, may simply indicate that it's not shown/hidden
1752             // yet (i.e. it had been hidden/showh 2 times before)
1753             return false;
1754         }
1755
1756         m_isNativeCaretShown = show;
1757     }
1758
1759     return true;
1760 }
1761
1762 // ----------------------------------------------------------------------------
1763 // implemenation details
1764 // ----------------------------------------------------------------------------
1765
1766 void wxTextCtrl::Command(wxCommandEvent & event)
1767 {
1768     SetValue(event.GetString());
1769     ProcessCommand (event);
1770 }
1771
1772 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
1773 {
1774     // By default, load the first file into the text window.
1775     if (event.GetNumberOfFiles() > 0)
1776     {
1777         LoadFile(event.GetFiles()[0]);
1778     }
1779 }
1780
1781 // ----------------------------------------------------------------------------
1782 // kbd input processing
1783 // ----------------------------------------------------------------------------
1784
1785 bool wxTextCtrl::MSWShouldPreProcessMessage(WXMSG* msg)
1786 {
1787     // check for our special keys here: if we don't do it and the parent frame
1788     // uses them as accelerators, they wouldn't work at all, so we disable
1789     // usual preprocessing for them
1790     if ( msg->message == WM_KEYDOWN )
1791     {
1792         const WPARAM vkey = msg->wParam;
1793         if ( HIWORD(msg->lParam) & KF_ALTDOWN )
1794         {
1795             // Alt-Backspace is accelerator for "Undo"
1796             if ( vkey == VK_BACK )
1797                 return false;
1798         }
1799         else // no Alt
1800         {
1801             // we want to process some Ctrl-foo and Shift-bar but no key
1802             // combinations without either Ctrl or Shift nor with both of them
1803             // pressed
1804             const int ctrl = wxIsCtrlDown(),
1805                       shift = wxIsShiftDown();
1806             switch ( ctrl + shift )
1807             {
1808                 default:
1809                     wxFAIL_MSG( _T("how many modifiers have we got?") );
1810                     // fall through
1811
1812                 case 0:
1813                     if ( IsMultiLine() && vkey == VK_RETURN )
1814                         return false;
1815                     // fall through
1816                 case 2:
1817                     break;
1818
1819                 case 1:
1820                     // either Ctrl or Shift pressed
1821                     if ( ctrl )
1822                     {
1823                         switch ( vkey )
1824                         {
1825                             case 'C':
1826                             case 'V':
1827                             case 'X':
1828                             case VK_INSERT:
1829                             case VK_DELETE:
1830                             case VK_HOME:
1831                             case VK_END:
1832                                 return false;
1833                         }
1834                     }
1835                     else // Shift is pressed
1836                     {
1837                         if ( vkey == VK_INSERT || vkey == VK_DELETE )
1838                             return false;
1839                     }
1840             }
1841         }
1842     }
1843
1844     return wxControl::MSWShouldPreProcessMessage(msg);
1845 }
1846
1847 void wxTextCtrl::OnChar(wxKeyEvent& event)
1848 {
1849     switch ( event.GetKeyCode() )
1850     {
1851         case WXK_RETURN:
1852             {
1853                 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1854                 InitCommandEvent(event);
1855                 event.SetString(GetValue());
1856                 if ( GetEventHandler()->ProcessEvent(event) )
1857                 if ( !HasFlag(wxTE_MULTILINE) )
1858                     return;
1859                 //else: multiline controls need Enter for themselves
1860             }
1861             break;
1862
1863         case WXK_TAB:
1864             // ok, so this is getting absolutely ridiculous but I don't see
1865             // any other way to fix this bug: when a multiline text control is
1866             // inside a wxFrame, we need to generate the navigation event as
1867             // otherwise nothing happens at all, but when the same control is
1868             // created inside a dialog, IsDialogMessage() *does* switch focus
1869             // all by itself and so if we do it here as well, it is advanced
1870             // twice and goes to the next control... to prevent this from
1871             // happening we're doing this ugly check, the logic being that if
1872             // we don't have focus then it had been already changed to the next
1873             // control
1874             //
1875             // the right thing to do would, of course, be to understand what
1876             // the hell is IsDialogMessage() doing but this is beyond my feeble
1877             // forces at the moment unfortunately
1878             if ( !(m_windowStyle & wxTE_PROCESS_TAB))
1879             {
1880                 if ( FindFocus() == this )
1881                 {
1882                     int flags = 0;
1883                     if (!event.ShiftDown())
1884                         flags |= wxNavigationKeyEvent::IsForward ;
1885                     if (event.ControlDown())
1886                         flags |= wxNavigationKeyEvent::WinChange ;
1887                     if (Navigate(flags))
1888                         return;
1889                 }
1890             }
1891             else
1892             {
1893                 // Insert tab since calling the default Windows handler
1894                 // doesn't seem to do it
1895                 WriteText(wxT("\t"));
1896                 return;
1897             }
1898             break;
1899     }
1900
1901     // no, we didn't process it
1902     event.Skip();
1903 }
1904
1905 WXLRESULT wxTextCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
1906 {
1907     WXLRESULT lRc = wxTextCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
1908
1909     if ( nMsg == WM_GETDLGCODE )
1910     {
1911         // we always want the chars and the arrows: the arrows for navigation
1912         // and the chars because we want Ctrl-C to work even in a read only
1913         // control
1914         long lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
1915
1916         if ( IsEditable() )
1917         {
1918             // we may have several different cases:
1919             // 1. normal case: both TAB and ENTER are used for dlg navigation
1920             // 2. ctrl which wants TAB for itself: ENTER is used to pass to the
1921             //    next control in the dialog
1922             // 3. ctrl which wants ENTER for itself: TAB is used for dialog
1923             //    navigation
1924             // 4. ctrl which wants both TAB and ENTER: Ctrl-ENTER is used to go
1925             //    to the next control
1926
1927             // the multiline edit control should always get <Return> for itself
1928             if ( HasFlag(wxTE_PROCESS_ENTER) || HasFlag(wxTE_MULTILINE) )
1929                 lDlgCode |= DLGC_WANTMESSAGE;
1930
1931             if ( HasFlag(wxTE_PROCESS_TAB) )
1932                 lDlgCode |= DLGC_WANTTAB;
1933
1934             lRc |= lDlgCode;
1935         }
1936         else // !editable
1937         {
1938             // NB: use "=", not "|=" as the base class version returns the
1939             //     same flags is this state as usual (i.e. including
1940             //     DLGC_WANTMESSAGE). This is strange (how does it work in the
1941             //     native Win32 apps?) but for now live with it.
1942             lRc = lDlgCode;
1943         }
1944     }
1945
1946     return lRc;
1947 }
1948
1949 // ----------------------------------------------------------------------------
1950 // text control event processing
1951 // ----------------------------------------------------------------------------
1952
1953 bool wxTextCtrl::SendUpdateEvent()
1954 {
1955     switch ( m_updatesCount )
1956     {
1957         case 0:
1958             // remember that we've got an update
1959             m_updatesCount++;
1960             break;
1961
1962         case 1:
1963             // we had already sent one event since the last control modification
1964             return false;
1965
1966         default:
1967             wxFAIL_MSG( _T("unexpected wxTextCtrl::m_updatesCount value") );
1968             // fall through
1969
1970         case -1:
1971             // we hadn't updated the control ourselves, this event comes from
1972             // the user, don't need to ignore it nor update the count
1973             break;
1974     }
1975
1976     wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, GetId());
1977     InitCommandEvent(event);
1978
1979     return ProcessCommand(event);
1980 }
1981
1982 bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
1983 {
1984     switch ( param )
1985     {
1986         case EN_SETFOCUS:
1987         case EN_KILLFOCUS:
1988             {
1989                 wxFocusEvent event(param == EN_KILLFOCUS ? wxEVT_KILL_FOCUS
1990                                                          : wxEVT_SET_FOCUS,
1991                                    m_windowId);
1992                 event.SetEventObject(this);
1993                 GetEventHandler()->ProcessEvent(event);
1994             }
1995             break;
1996
1997         case EN_CHANGE:
1998             SendUpdateEvent();
1999             break;
2000
2001         case EN_MAXTEXT:
2002             // the text size limit has been hit -- try to increase it
2003             if ( !AdjustSpaceLimit() )
2004             {
2005                 wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, m_windowId);
2006                 InitCommandEvent(event);
2007                 event.SetString(GetValue());
2008                 ProcessCommand(event);
2009             }
2010             break;
2011
2012             // the other edit notification messages are not processed
2013         default:
2014             return false;
2015     }
2016
2017     // processed
2018     return true;
2019 }
2020
2021 WXHBRUSH wxTextCtrl::MSWControlColor(WXHDC hDC, WXHWND hWnd)
2022 {
2023     if ( !IsEnabled() && !HasFlag(wxTE_MULTILINE) )
2024         return MSWControlColorDisabled(hDC);
2025
2026     return wxTextCtrlBase::MSWControlColor(hDC, hWnd);
2027 }
2028
2029 bool wxTextCtrl::HasSpaceLimit(unsigned int *len) const
2030 {
2031     // HACK: we try to automatically extend the limit for the amount of text
2032     //       to allow (interactively) entering more than 64Kb of text under
2033     //       Win9x but we shouldn't reset the text limit which was previously
2034     //       set explicitly with SetMaxLength()
2035     //
2036     //       Unfortunately there is no EM_GETLIMITTEXTSETBYUSER and so we don't
2037     //       know the limit we set (if any). We could solve this by storing the
2038     //       limit we set in wxTextCtrl but to save space we prefer to simply
2039     //       test here the actual limit value: we consider that SetMaxLength()
2040     //       can only be called for small values while EN_MAXTEXT is only sent
2041     //       for large values (in practice the default limit seems to be 30000
2042     //       but make it smaller just to be on the safe side)
2043     *len = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
2044     return *len < 10001;
2045
2046 }
2047
2048 bool wxTextCtrl::AdjustSpaceLimit()
2049 {
2050     unsigned int limit;
2051     if ( HasSpaceLimit(&limit) )
2052         return false;
2053
2054     unsigned int len = ::GetWindowTextLength(GetHwnd());
2055     if ( len >= limit )
2056     {
2057         // increment in 32Kb chunks
2058         SetMaxLength(len + 0x8000);
2059     }
2060
2061     // we changed the limit
2062     return true;
2063 }
2064
2065 bool wxTextCtrl::AcceptsFocus() const
2066 {
2067     // we don't want focus if we can't be edited unless we're a multiline
2068     // control because then it might be still nice to get focus from keyboard
2069     // to be able to scroll it without mouse
2070     return (IsEditable() || IsMultiLine()) && wxControl::AcceptsFocus();
2071 }
2072
2073 wxSize wxTextCtrl::DoGetBestSize() const
2074 {
2075     int cx, cy;
2076     wxGetCharSize(GetHWND(), &cx, &cy, GetFont());
2077
2078     int wText = DEFAULT_ITEM_WIDTH;
2079
2080     int hText = cy;
2081     if ( m_windowStyle & wxTE_MULTILINE )
2082     {
2083         hText *= wxMax(wxMin(GetNumberOfLines(), 10), 2);
2084     }
2085     //else: for single line control everything is ok
2086
2087     // we have to add the adjustments for the control height only once, not
2088     // once per line, so do it after multiplication above
2089     hText += EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy) - cy;
2090
2091     return wxSize(wText, hText);
2092 }
2093
2094 // ----------------------------------------------------------------------------
2095 // standard handlers for standard edit menu events
2096 // ----------------------------------------------------------------------------
2097
2098 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
2099 {
2100     Cut();
2101 }
2102
2103 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
2104 {
2105     Copy();
2106 }
2107
2108 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
2109 {
2110     Paste();
2111 }
2112
2113 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
2114 {
2115     Undo();
2116 }
2117
2118 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
2119 {
2120     Redo();
2121 }
2122
2123 void wxTextCtrl::OnDelete(wxCommandEvent& WXUNUSED(event))
2124 {
2125     long from, to;
2126     GetSelection(& from, & to);
2127     if (from != -1 && to != -1)
2128         Remove(from, to);
2129 }
2130
2131 void wxTextCtrl::OnSelectAll(wxCommandEvent& WXUNUSED(event))
2132 {
2133     SetSelection(-1, -1);
2134 }
2135
2136 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
2137 {
2138     event.Enable( CanCut() );
2139 }
2140
2141 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
2142 {
2143     event.Enable( CanCopy() );
2144 }
2145
2146 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
2147 {
2148     event.Enable( CanPaste() );
2149 }
2150
2151 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
2152 {
2153     event.Enable( CanUndo() );
2154 }
2155
2156 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
2157 {
2158     event.Enable( CanRedo() );
2159 }
2160
2161 void wxTextCtrl::OnUpdateDelete(wxUpdateUIEvent& event)
2162 {
2163     long from, to;
2164     GetSelection(& from, & to);
2165     event.Enable(from != -1 && to != -1 && from != to && IsEditable()) ;
2166 }
2167
2168 void wxTextCtrl::OnUpdateSelectAll(wxUpdateUIEvent& event)
2169 {
2170     event.Enable(GetLastPosition() > 0);
2171 }
2172
2173 void wxTextCtrl::OnContextMenu(wxContextMenuEvent& event)
2174 {
2175 #if wxUSE_RICHEDIT
2176     if (IsRich())
2177     {
2178         if (!m_privateContextMenu)
2179         {
2180             m_privateContextMenu = new wxMenu;
2181             m_privateContextMenu->Append(wxID_UNDO, _("&Undo"));
2182             m_privateContextMenu->Append(wxID_REDO, _("&Redo"));
2183             m_privateContextMenu->AppendSeparator();
2184             m_privateContextMenu->Append(wxID_CUT, _("Cu&t"));
2185             m_privateContextMenu->Append(wxID_COPY, _("&Copy"));
2186             m_privateContextMenu->Append(wxID_PASTE, _("&Paste"));
2187             m_privateContextMenu->Append(wxID_CLEAR, _("&Delete"));
2188             m_privateContextMenu->AppendSeparator();
2189             m_privateContextMenu->Append(wxID_SELECTALL, _("Select &All"));
2190         }
2191         PopupMenu(m_privateContextMenu);
2192         return;
2193     }
2194     else
2195 #endif
2196     event.Skip();
2197 }
2198
2199 void wxTextCtrl::OnSetFocus(wxFocusEvent& WXUNUSED(event))
2200 {
2201     // be sure the caret remains invisible if the user had hidden it
2202     if ( !m_isNativeCaretShown )
2203     {
2204         ::HideCaret(GetHwnd());
2205     }
2206 }
2207
2208 // ----------------------------------------------------------------------------
2209 // Default colors for MSW text control
2210 //
2211 // Set default background color to the native white instead of
2212 // the default wxSYS_COLOUR_BTNFACE (is triggered with wxNullColour).
2213 // ----------------------------------------------------------------------------
2214
2215 wxVisualAttributes wxTextCtrl::GetDefaultAttributes() const
2216 {
2217     wxVisualAttributes attrs;
2218     attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
2219     attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
2220     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW); //white
2221
2222     return attrs;
2223 }
2224
2225 // the rest of the file only deals with the rich edit controls
2226 #if wxUSE_RICHEDIT
2227
2228 // ----------------------------------------------------------------------------
2229 // EN_LINK processing
2230 // ----------------------------------------------------------------------------
2231
2232 bool wxTextCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
2233 {
2234     NMHDR *hdr = (NMHDR* )lParam;
2235     switch ( hdr->code )
2236     {
2237        case EN_MSGFILTER:
2238             {
2239                 const MSGFILTER *msgf = (MSGFILTER *)lParam;
2240                 UINT msg = msgf->msg;
2241
2242                 // this is a bit crazy but richedit 1.0 sends us all mouse
2243                 // events _except_ WM_LBUTTONUP (don't ask me why) so we have
2244                 // generate the wxWin events for this message manually
2245                 //
2246                 // NB: in fact, this is still not totally correct as it does
2247                 //     send us WM_LBUTTONUP if the selection was cleared by the
2248                 //     last click -- so currently we get 2 events in this case,
2249                 //     but as I don't see any obvious way to check for this I
2250                 //     leave this code in place because it's still better than
2251                 //     not getting left up events at all
2252                 if ( msg == WM_LBUTTONUP )
2253                 {
2254                     WXUINT flags = msgf->wParam;
2255                     int x = GET_X_LPARAM(msgf->lParam),
2256                         y = GET_Y_LPARAM(msgf->lParam);
2257
2258                     HandleMouseEvent(msg, x, y, flags);
2259                 }
2260             }
2261
2262             // return true to process the event (and false to ignore it)
2263             return true;
2264
2265         case EN_LINK:
2266             {
2267                 const ENLINK *enlink = (ENLINK *)hdr;
2268
2269                 switch ( enlink->msg )
2270                 {
2271                     case WM_SETCURSOR:
2272                         // ok, so it is hardcoded - do we really nee to
2273                         // customize it?
2274                         {
2275                             wxCursor cur(wxCURSOR_HAND);
2276                             ::SetCursor(GetHcursorOf(cur));
2277                             *result = TRUE;
2278                             break;
2279                         }
2280
2281                     case WM_MOUSEMOVE:
2282                     case WM_LBUTTONDOWN:
2283                     case WM_LBUTTONUP:
2284                     case WM_LBUTTONDBLCLK:
2285                     case WM_RBUTTONDOWN:
2286                     case WM_RBUTTONUP:
2287                     case WM_RBUTTONDBLCLK:
2288                         // send a mouse event
2289                         {
2290                             static const wxEventType eventsMouse[] =
2291                             {
2292                                 wxEVT_MOTION,
2293                                 wxEVT_LEFT_DOWN,
2294                                 wxEVT_LEFT_UP,
2295                                 wxEVT_LEFT_DCLICK,
2296                                 wxEVT_RIGHT_DOWN,
2297                                 wxEVT_RIGHT_UP,
2298                                 wxEVT_RIGHT_DCLICK,
2299                             };
2300
2301                             // the event ids are consecutive
2302                             wxMouseEvent
2303                                 evtMouse(eventsMouse[enlink->msg - WM_MOUSEMOVE]);
2304
2305                             InitMouseEvent(evtMouse,
2306                                            GET_X_LPARAM(enlink->lParam),
2307                                            GET_Y_LPARAM(enlink->lParam),
2308                                            enlink->wParam);
2309
2310                             wxTextUrlEvent event(m_windowId, evtMouse,
2311                                                  enlink->chrg.cpMin,
2312                                                  enlink->chrg.cpMax);
2313
2314                             InitCommandEvent(event);
2315
2316                             *result = ProcessCommand(event);
2317                         }
2318                         break;
2319                 }
2320             }
2321             return true;
2322     }
2323
2324     // not processed, leave it to the base class
2325     return wxTextCtrlBase::MSWOnNotify(idCtrl, lParam, result);
2326 }
2327
2328 // ----------------------------------------------------------------------------
2329 // colour setting for the rich edit controls
2330 // ----------------------------------------------------------------------------
2331
2332 bool wxTextCtrl::SetBackgroundColour(const wxColour& colour)
2333 {
2334     if ( !wxTextCtrlBase::SetBackgroundColour(colour) )
2335     {
2336         // colour didn't really change
2337         return false;
2338     }
2339
2340     if ( IsRich() )
2341     {
2342         // rich edit doesn't use WM_CTLCOLOR, hence we need to send
2343         // EM_SETBKGNDCOLOR additionally
2344         ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour));
2345     }
2346
2347     return true;
2348 }
2349
2350 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
2351 {
2352     if ( !wxTextCtrlBase::SetForegroundColour(colour) )
2353     {
2354         // colour didn't really change
2355         return false;
2356     }
2357
2358     if ( IsRich() )
2359     {
2360         // change the colour of everything
2361         CHARFORMAT cf;
2362         wxZeroMemory(cf);
2363         cf.cbSize = sizeof(cf);
2364         cf.dwMask = CFM_COLOR;
2365         cf.crTextColor = wxColourToRGB(colour);
2366         ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf);
2367     }
2368
2369     return true;
2370 }
2371
2372 // ----------------------------------------------------------------------------
2373 // styling support for rich edit controls
2374 // ----------------------------------------------------------------------------
2375
2376 #if wxUSE_RICHEDIT
2377
2378 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
2379 {
2380     if ( !IsRich() )
2381     {
2382         // can't do it with normal text control
2383         return false;
2384     }
2385
2386     // the richedit 1.0 doesn't handle setting background colour, so don't
2387     // even try to do anything if it's the only thing we want to change
2388     if ( m_verRichEdit == 1 && !style.HasFont() && !style.HasTextColour() &&
2389         !style.HasLeftIndent() && !style.HasRightIndent() && !style.HasAlignment() &&
2390         !style.HasTabs() )
2391     {
2392         // nothing to do: return true if there was really nothing to do and
2393         // false if we failed to set bg colour
2394         return !style.HasBackgroundColour();
2395     }
2396
2397     // order the range if needed
2398     if ( start > end )
2399     {
2400         long tmp = start;
2401         start = end;
2402         end = tmp;
2403     }
2404
2405     // we can only change the format of the selection, so select the range we
2406     // want and restore the old selection later
2407     long startOld, endOld;
2408     GetSelection(&startOld, &endOld);
2409
2410     // but do we really have to change the selection?
2411     bool changeSel = start != startOld || end != endOld;
2412
2413     if ( changeSel )
2414     {
2415         DoSetSelection(start, end, false /* don't scroll caret into view */);
2416     }
2417
2418     // initialize CHARFORMAT struct
2419 #if wxUSE_RICHEDIT2
2420     CHARFORMAT2 cf;
2421 #else
2422     CHARFORMAT cf;
2423 #endif
2424
2425     wxZeroMemory(cf);
2426
2427     // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2428     // CHARFORMAT in that case
2429 #if wxUSE_RICHEDIT2
2430     if ( m_verRichEdit == 1 )
2431     {
2432         // this is the only thing the control is going to grok
2433         cf.cbSize = sizeof(CHARFORMAT);
2434     }
2435     else
2436 #endif
2437     {
2438         // CHARFORMAT or CHARFORMAT2
2439         cf.cbSize = sizeof(cf);
2440     }
2441
2442     if ( style.HasFont() )
2443     {
2444         // VZ: CFM_CHARSET doesn't seem to do anything at all in RichEdit 2.0
2445         //     but using it doesn't seem to hurt neither so leaving it for now
2446
2447         cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET |
2448                      CFM_ITALIC | CFM_BOLD | CFM_UNDERLINE;
2449
2450         // fill in data from LOGFONT but recalculate lfHeight because we need
2451         // the real height in twips and not the negative number which
2452         // wxFillLogFont() returns (this is correct in general and works with
2453         // the Windows font mapper, but not here)
2454         LOGFONT lf;
2455         wxFillLogFont(&lf, &style.GetFont());
2456         cf.yHeight = 20*style.GetFont().GetPointSize(); // 1 pt = 20 twips
2457         cf.bCharSet = lf.lfCharSet;
2458         cf.bPitchAndFamily = lf.lfPitchAndFamily;
2459         wxStrncpy( cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName) );
2460
2461         // also deal with underline/italic/bold attributes: note that we must
2462         // always set CFM_ITALIC &c bits in dwMask, even if we don't set the
2463         // style to allow clearing it
2464         if ( lf.lfItalic )
2465         {
2466             cf.dwEffects |= CFE_ITALIC;
2467         }
2468
2469         if ( lf.lfWeight == FW_BOLD )
2470         {
2471             cf.dwEffects |= CFE_BOLD;
2472         }
2473
2474         if ( lf.lfUnderline )
2475         {
2476             cf.dwEffects |= CFE_UNDERLINE;
2477         }
2478
2479         // strikeout fonts are not supported by wxWidgets
2480     }
2481
2482     if ( style.HasTextColour() )
2483     {
2484         cf.dwMask |= CFM_COLOR;
2485         cf.crTextColor = wxColourToRGB(style.GetTextColour());
2486     }
2487
2488 #if wxUSE_RICHEDIT2
2489     if ( m_verRichEdit != 1 && style.HasBackgroundColour() )
2490     {
2491         cf.dwMask |= CFM_BACKCOLOR;
2492         cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
2493     }
2494 #endif // wxUSE_RICHEDIT2
2495
2496     // do format the selection
2497     bool ok = ::SendMessage(GetHwnd(), EM_SETCHARFORMAT,
2498                             SCF_SELECTION, (LPARAM)&cf) != 0;
2499     if ( !ok )
2500     {
2501         wxLogDebug(_T("SendMessage(EM_SETCHARFORMAT, SCF_SELECTION) failed"));
2502     }
2503
2504     // now do the paragraph formatting
2505     PARAFORMAT2 pf;
2506     wxZeroMemory(pf);
2507     // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2508     // PARAFORMAT in that case
2509 #if wxUSE_RICHEDIT2
2510     if ( m_verRichEdit == 1 )
2511     {
2512         // this is the only thing the control is going to grok
2513         pf.cbSize = sizeof(PARAFORMAT);
2514     }
2515     else
2516 #endif
2517     {
2518         // PARAFORMAT or PARAFORMAT2
2519         pf.cbSize = sizeof(pf);
2520     }
2521
2522     if (style.HasAlignment())
2523     {
2524         pf.dwMask |= PFM_ALIGNMENT;
2525         if (style.GetAlignment() == wxTEXT_ALIGNMENT_RIGHT)
2526             pf.wAlignment = PFA_RIGHT;
2527         else if (style.GetAlignment() == wxTEXT_ALIGNMENT_CENTRE)
2528             pf.wAlignment = PFA_CENTER;
2529         else if (style.GetAlignment() == wxTEXT_ALIGNMENT_JUSTIFIED)
2530             pf.wAlignment = PFA_JUSTIFY;
2531         else
2532             pf.wAlignment = PFA_LEFT;
2533     }
2534
2535     if (style.HasLeftIndent())
2536     {
2537         pf.dwMask |= PFM_STARTINDENT | PFM_OFFSET;
2538
2539         // Convert from 1/10 mm to TWIPS
2540         pf.dxStartIndent = (int) (((double) style.GetLeftIndent()) * mm2twips / 10.0) ;
2541         pf.dxOffset = (int) (((double) style.GetLeftSubIndent()) * mm2twips / 10.0) ;
2542     }
2543
2544     if (style.HasRightIndent())
2545     {
2546         pf.dwMask |= PFM_RIGHTINDENT;
2547
2548         // Convert from 1/10 mm to TWIPS
2549         pf.dxRightIndent = (int) (((double) style.GetRightIndent()) * mm2twips / 10.0) ;
2550     }
2551
2552     if (style.HasTabs())
2553     {
2554         pf.dwMask |= PFM_TABSTOPS;
2555
2556         const wxArrayInt& tabs = style.GetTabs();
2557
2558         pf.cTabCount = (SHORT)wxMin(tabs.GetCount(), MAX_TAB_STOPS);
2559         size_t i;
2560         for (i = 0; i < (size_t) pf.cTabCount; i++)
2561         {
2562             // Convert from 1/10 mm to TWIPS
2563             pf.rgxTabs[i] = (int) (((double) tabs[i]) * mm2twips / 10.0) ;
2564         }
2565     }
2566
2567 #if wxUSE_RICHEDIT2
2568     if ( m_verRichEdit > 1 )
2569     {
2570         if ( wxTheApp->GetLayoutDirection() == wxLayout_RightToLeft )
2571         {
2572             // Use RTL paragraphs in RTL mode to get proper layout
2573             pf.dwMask |= PFM_RTLPARA;
2574             pf.wEffects |= PFE_RTLPARA;
2575         }
2576     }
2577 #endif // wxUSE_RICHEDIT2
2578
2579     if ( pf.dwMask )
2580     {
2581         // do format the selection
2582         bool ok = ::SendMessage(GetHwnd(), EM_SETPARAFORMAT,
2583                                 0, (LPARAM) &pf) != 0;
2584         if ( !ok )
2585         {
2586             wxLogDebug(_T("SendMessage(EM_SETPARAFORMAT, 0) failed"));
2587         }
2588     }
2589
2590     if ( changeSel )
2591     {
2592         // restore the original selection
2593         DoSetSelection(startOld, endOld, false);
2594     }
2595
2596     return ok;
2597 }
2598
2599 bool wxTextCtrl::SetDefaultStyle(const wxTextAttr& style)
2600 {
2601     if ( !wxTextCtrlBase::SetDefaultStyle(style) )
2602         return false;
2603
2604     if ( IsEditable() )
2605     {
2606         // we have to do this or the style wouldn't apply for the text typed by
2607         // the user
2608         wxTextPos posLast = GetLastPosition();
2609         SetStyle(posLast, posLast, m_defaultStyle);
2610     }
2611
2612     return true;
2613 }
2614
2615 bool wxTextCtrl::GetStyle(long position, wxTextAttr& style)
2616 {
2617     if ( !IsRich() )
2618     {
2619         // can't do it with normal text control
2620         return false;
2621     }
2622
2623     // initialize CHARFORMAT struct
2624 #if wxUSE_RICHEDIT2
2625     CHARFORMAT2 cf;
2626 #else
2627     CHARFORMAT cf;
2628 #endif
2629
2630     wxZeroMemory(cf);
2631
2632     // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2633     // CHARFORMAT in that case
2634 #if wxUSE_RICHEDIT2
2635     if ( m_verRichEdit == 1 )
2636     {
2637         // this is the only thing the control is going to grok
2638         cf.cbSize = sizeof(CHARFORMAT);
2639     }
2640     else
2641 #endif
2642     {
2643         // CHARFORMAT or CHARFORMAT2
2644         cf.cbSize = sizeof(cf);
2645     }
2646     // we can only change the format of the selection, so select the range we
2647     // want and restore the old selection later
2648     long startOld, endOld;
2649     GetSelection(&startOld, &endOld);
2650
2651     // but do we really have to change the selection?
2652     bool changeSel = position != startOld || position != endOld;
2653
2654     if ( changeSel )
2655     {
2656         DoSetSelection(position, position+1, false /* don't scroll caret into view */);
2657     }
2658
2659     // get the selection formatting
2660     (void) ::SendMessage(GetHwnd(), EM_GETCHARFORMAT,
2661                             SCF_SELECTION, (LPARAM)&cf) ;
2662
2663
2664     LOGFONT lf;
2665     lf.lfHeight = cf.yHeight;
2666     lf.lfWidth = 0;
2667     lf.lfCharSet = ANSI_CHARSET; // FIXME: how to get correct charset?
2668     lf.lfClipPrecision = 0;
2669     lf.lfEscapement = 0;
2670     wxStrcpy(lf.lfFaceName, cf.szFaceName);
2671
2672     //NOTE:  we _MUST_ set each of these values to _something_ since we
2673     //do not call wxZeroMemory on the LOGFONT lf
2674     if (cf.dwEffects & CFE_ITALIC)
2675         lf.lfItalic = TRUE;
2676     else
2677         lf.lfItalic = FALSE;
2678
2679     lf.lfOrientation = 0;
2680     lf.lfPitchAndFamily = cf.bPitchAndFamily;
2681     lf.lfQuality = 0;
2682
2683     if (cf.dwEffects & CFE_STRIKEOUT)
2684         lf.lfStrikeOut = TRUE;
2685     else
2686         lf.lfStrikeOut = FALSE;
2687
2688     if (cf.dwEffects & CFE_UNDERLINE)
2689         lf.lfUnderline = TRUE;
2690     else
2691         lf.lfUnderline = FALSE;
2692
2693     if (cf.dwEffects & CFE_BOLD)
2694         lf.lfWeight = FW_BOLD;
2695     else
2696         lf.lfWeight = FW_NORMAL;
2697
2698     wxFont font = wxCreateFontFromLogFont(& lf);
2699     if (font.Ok())
2700     {
2701         style.SetFont(font);
2702     }
2703     style.SetTextColour(wxColour(cf.crTextColor));
2704
2705 #if wxUSE_RICHEDIT2
2706     if ( m_verRichEdit != 1 )
2707     {
2708         // cf.dwMask |= CFM_BACKCOLOR;
2709         style.SetBackgroundColour(wxColour(cf.crBackColor));
2710     }
2711 #endif // wxUSE_RICHEDIT2
2712
2713     // now get the paragraph formatting
2714     PARAFORMAT2 pf;
2715     wxZeroMemory(pf);
2716     // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2717     // PARAFORMAT in that case
2718 #if wxUSE_RICHEDIT2
2719     if ( m_verRichEdit == 1 )
2720     {
2721         // this is the only thing the control is going to grok
2722         pf.cbSize = sizeof(PARAFORMAT);
2723     }
2724     else
2725 #endif
2726     {
2727         // PARAFORMAT or PARAFORMAT2
2728         pf.cbSize = sizeof(pf);
2729     }
2730
2731     // do format the selection
2732     (void) ::SendMessage(GetHwnd(), EM_GETPARAFORMAT, 0, (LPARAM) &pf) ;
2733
2734     style.SetLeftIndent( (int) ((double) pf.dxStartIndent * twips2mm * 10.0), (int) ((double) pf.dxOffset * twips2mm * 10.0) );
2735     style.SetRightIndent( (int) ((double) pf.dxRightIndent * twips2mm * 10.0) );
2736
2737     if (pf.wAlignment == PFA_CENTER)
2738         style.SetAlignment(wxTEXT_ALIGNMENT_CENTRE);
2739     else if (pf.wAlignment == PFA_RIGHT)
2740         style.SetAlignment(wxTEXT_ALIGNMENT_RIGHT);
2741     else if (pf.wAlignment == PFA_JUSTIFY)
2742         style.SetAlignment(wxTEXT_ALIGNMENT_JUSTIFIED);
2743     else
2744         style.SetAlignment(wxTEXT_ALIGNMENT_LEFT);
2745
2746     wxArrayInt tabStops;
2747     size_t i;
2748     for (i = 0; i < (size_t) pf.cTabCount; i++)
2749     {
2750         tabStops.Add( (int) ((double) (pf.rgxTabs[i] & 0xFFFF) * twips2mm * 10.0) );
2751     }
2752
2753     if ( changeSel )
2754     {
2755         // restore the original selection
2756         DoSetSelection(startOld, endOld, false);
2757     }
2758
2759     return true;
2760 }
2761
2762 #endif
2763
2764 // ----------------------------------------------------------------------------
2765 // wxRichEditModule
2766 // ----------------------------------------------------------------------------
2767
2768 static const HINSTANCE INVALID_HINSTANCE = (HINSTANCE)-1;
2769
2770 bool wxRichEditModule::OnInit()
2771 {
2772     // don't do anything - we will load it when needed
2773     return true;
2774 }
2775
2776 void wxRichEditModule::OnExit()
2777 {
2778     for ( size_t i = 0; i < WXSIZEOF(ms_hRichEdit); i++ )
2779     {
2780         if ( ms_hRichEdit[i] && ms_hRichEdit[i] != INVALID_HINSTANCE )
2781         {
2782             ::FreeLibrary(ms_hRichEdit[i]);
2783             ms_hRichEdit[i] = NULL;
2784         }
2785     }
2786 #if wxUSE_INKEDIT
2787     if (ms_inkEditLib.IsLoaded())
2788         ms_inkEditLib.Unload();
2789 #endif
2790 }
2791
2792 /* static */
2793 bool wxRichEditModule::Load(Version version)
2794 {
2795     if ( ms_hRichEdit[version] == INVALID_HINSTANCE )
2796     {
2797         // we had already tried to load it and failed
2798         return false;
2799     }
2800
2801     if ( ms_hRichEdit[version] )
2802     {
2803         // we've already got this one
2804         return true;
2805     }
2806
2807     static const wxChar *dllnames[] =
2808     {
2809         _T("riched32"),
2810         _T("riched20"),
2811         _T("msftedit"),
2812     };
2813
2814     wxCOMPILE_TIME_ASSERT( WXSIZEOF(dllnames) == Version_Max,
2815                             RichEditDllNamesVersionsMismatch );
2816
2817     ms_hRichEdit[version] = ::LoadLibrary(dllnames[version]);
2818
2819     if ( !ms_hRichEdit[version] )
2820     {
2821         ms_hRichEdit[version] = INVALID_HINSTANCE;
2822
2823         return false;
2824     }
2825
2826     return true;
2827 }
2828
2829 #if wxUSE_INKEDIT
2830 // load the InkEdit library
2831 bool wxRichEditModule::LoadInkEdit()
2832 {
2833     static wxDynamicLibrary ms_inkEditLib;
2834     static bool             ms_inkEditLibLoadAttemped;
2835     if (ms_inkEditLibLoadAttemped)
2836         ms_inkEditLib.IsLoaded();
2837
2838     ms_inkEditLibLoadAttemped = true;
2839
2840     wxLogNull logNull;
2841     return ms_inkEditLib.Load(wxT("inked"));
2842 }
2843 #endif
2844
2845
2846 #endif // wxUSE_RICHEDIT
2847
2848 #endif // wxUSE_TEXTCTRL && !(__SMARTPHONE__ && __WXWINCE__)