src/msw/textctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        msw/textctrl.cpp
   3 // Purpose:     wxTextCtrl
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #if wxUSE_TEXTCTRL && !(defined(__SMARTPHONE__) && defined(__WXWINCE__))
  28
  29 #ifndef WX_PRECOMP
  30     #include "wx/textctrl.h"
  31     #include "wx/settings.h"
  32     #include "wx/brush.h"
  33     #include "wx/utils.h"
  34     #include "wx/intl.h"
  35     #include "wx/log.h"
  36     #include "wx/app.h"
  37     #include "wx/menu.h"
  38     #include "wx/math.h"
  39 #endif
  40
  41 #include "wx/module.h"
  42 #include "wx/sysopt.h"
  43
  44 #if wxUSE_CLIPBOARD
  45     #include "wx/clipbrd.h"
  46 #endif
  47
  48 #include "wx/textfile.h"
  49
  50 #include <windowsx.h>
  51
  52 #include "wx/msw/private.h"
  53 #include "wx/msw/winundef.h"
  54
  55 #include <string.h>
  56 #include <stdlib.h>
  57
  58 #ifndef __WXWINCE__
  59 #include <sys/types.h>
  60 #endif
  61
  62 #if wxUSE_RICHEDIT
  63
  64 #if wxUSE_INKEDIT
  65 #include "wx/dynlib.h"
  66 #endif
  67
  68 // old mingw32 has richedit stuff directly in windows.h and doesn't have
  69 // richedit.h at all
  70 #if !defined(__GNUWIN32_OLD__) || defined(__CYGWIN10__)
  71     #include <richedit.h>
  72 #endif
  73
  74 #include "wx/msw/missing.h"
  75
  76 #endif // wxUSE_RICHEDIT
  77
  78 // ----------------------------------------------------------------------------
  79 // private classes
  80 // ----------------------------------------------------------------------------
  81
  82 #if wxUSE_RICHEDIT
  83
  84 // this module initializes RichEdit DLL(s) if needed
  85 class wxRichEditModule : public wxModule
  86 {
  87 public:
  88     enum Version
  89     {
  90         Version_1,          // riched32.dll
  91         Version_2or3,       // both use riched20.dll
  92         Version_41,         // msftedit.dll (XP SP1 and Windows 2003)
  93         Version_Max
  94     };
  95
  96     virtual bool OnInit();
  97     virtual void OnExit();
  98
  99     // load the richedit DLL for the specified version of rich edit
 100     static bool Load(Version version);
 101
 102 #if wxUSE_INKEDIT
 103     // load the InkEdit library
 104     static bool LoadInkEdit();
 105 #endif
 106
 107 private:
 108     // the handles to richedit 1.0 and 2.0 (or 3.0) DLLs
 109     static HINSTANCE ms_hRichEdit[Version_Max];
 110
 111 #if wxUSE_INKEDIT
 112     static wxDynamicLibrary ms_inkEditLib;
 113     static bool             ms_inkEditLibLoadAttemped;
 114 #endif
 115
 116     DECLARE_DYNAMIC_CLASS(wxRichEditModule)
 117 };
 118
 119 HINSTANCE wxRichEditModule::ms_hRichEdit[Version_Max] = { NULL, NULL, NULL };
 120
 121 #if wxUSE_INKEDIT
 122 wxDynamicLibrary wxRichEditModule::ms_inkEditLib;
 123 bool             wxRichEditModule::ms_inkEditLibLoadAttemped = false;
 124 #endif
 125
 126 IMPLEMENT_DYNAMIC_CLASS(wxRichEditModule, wxModule)
 127
 128 #endif // wxUSE_RICHEDIT
 129
 130 // a small class used to set m_updatesCount to 0 (to filter duplicate events if
 131 // necessary) and to reset it back to -1 afterwards
 132 class UpdatesCountFilter
 133 {
 134 public:
 135     UpdatesCountFilter(int& count)
 136         : m_count(count)
 137     {
 138         wxASSERT_MSG( m_count == -1, _T("wrong initial m_updatesCount value") );
 139
 140         m_count = 0;
 141     }
 142
 143     ~UpdatesCountFilter()
 144     {
 145         m_count = -1;
 146     }
 147
 148     // return true if an event has been received
 149     bool GotUpdate() const
 150     {
 151         return m_count == 1;
 152     }
 153
 154 private:
 155     int& m_count;
 156
 157     DECLARE_NO_COPY_CLASS(UpdatesCountFilter)
 158 };
 159
 160 // ----------------------------------------------------------------------------
 161 // event tables and other macros
 162 // ----------------------------------------------------------------------------
 163
 164 #if wxUSE_EXTENDED_RTTI
 165 WX_DEFINE_FLAGS( wxTextCtrlStyle )
 166
 167 wxBEGIN_FLAGS( wxTextCtrlStyle )
 168     // new style border flags, we put them first to
 169     // use them for streaming out
 170     wxFLAGS_MEMBER(wxBORDER_SIMPLE)
 171     wxFLAGS_MEMBER(wxBORDER_SUNKEN)
 172     wxFLAGS_MEMBER(wxBORDER_DOUBLE)
 173     wxFLAGS_MEMBER(wxBORDER_RAISED)
 174     wxFLAGS_MEMBER(wxBORDER_STATIC)
 175     wxFLAGS_MEMBER(wxBORDER_NONE)
 176
 177     // old style border flags
 178     wxFLAGS_MEMBER(wxSIMPLE_BORDER)
 179     wxFLAGS_MEMBER(wxSUNKEN_BORDER)
 180     wxFLAGS_MEMBER(wxDOUBLE_BORDER)
 181     wxFLAGS_MEMBER(wxRAISED_BORDER)
 182     wxFLAGS_MEMBER(wxSTATIC_BORDER)
 183     wxFLAGS_MEMBER(wxBORDER)
 184
 185     // standard window styles
 186     wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
 187     wxFLAGS_MEMBER(wxCLIP_CHILDREN)
 188     wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
 189     wxFLAGS_MEMBER(wxWANTS_CHARS)
 190     wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
 191     wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
 192     wxFLAGS_MEMBER(wxVSCROLL)
 193     wxFLAGS_MEMBER(wxHSCROLL)
 194
 195     wxFLAGS_MEMBER(wxTE_PROCESS_ENTER)
 196     wxFLAGS_MEMBER(wxTE_PROCESS_TAB)
 197     wxFLAGS_MEMBER(wxTE_MULTILINE)
 198     wxFLAGS_MEMBER(wxTE_PASSWORD)
 199     wxFLAGS_MEMBER(wxTE_READONLY)
 200     wxFLAGS_MEMBER(wxHSCROLL)
 201     wxFLAGS_MEMBER(wxTE_RICH)
 202     wxFLAGS_MEMBER(wxTE_RICH2)
 203     wxFLAGS_MEMBER(wxTE_AUTO_URL)
 204     wxFLAGS_MEMBER(wxTE_NOHIDESEL)
 205     wxFLAGS_MEMBER(wxTE_LEFT)
 206     wxFLAGS_MEMBER(wxTE_CENTRE)
 207     wxFLAGS_MEMBER(wxTE_RIGHT)
 208     wxFLAGS_MEMBER(wxTE_DONTWRAP)
 209     wxFLAGS_MEMBER(wxTE_LINEWRAP)
 210     wxFLAGS_MEMBER(wxTE_WORDWRAP)
 211
 212 wxEND_FLAGS( wxTextCtrlStyle )
 213
 214 IMPLEMENT_DYNAMIC_CLASS_XTI(wxTextCtrl, wxControl,"wx/textctrl.h")
 215
 216 wxBEGIN_PROPERTIES_TABLE(wxTextCtrl)
 217     wxEVENT_PROPERTY( TextUpdated , wxEVT_COMMAND_TEXT_UPDATED , wxCommandEvent )
 218     wxEVENT_PROPERTY( TextEnter , wxEVT_COMMAND_TEXT_ENTER , wxCommandEvent )
 219
 220     wxPROPERTY( Font , wxFont , SetFont , GetFont  , EMPTY_MACROVALUE, 0 /*flags*/ , wxT("Helpstring") , wxT("group") )
 221     wxPROPERTY( Value , wxString , SetValue, GetValue, wxString() , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
 222     wxPROPERTY_FLAGS( WindowStyle , wxTextCtrlStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
 223 wxEND_PROPERTIES_TABLE()
 224
 225 wxBEGIN_HANDLERS_TABLE(wxTextCtrl)
 226 wxEND_HANDLERS_TABLE()
 227
 228 wxCONSTRUCTOR_6( wxTextCtrl , wxWindow* , Parent , wxWindowID , Id , wxString , Value , wxPoint , Position , wxSize , Size , long , WindowStyle)
 229 #else
 230 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxControl)
 231 #endif
 232
 233
 234 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
 235     EVT_CHAR(wxTextCtrl::OnChar)
 236     EVT_DROP_FILES(wxTextCtrl::OnDropFiles)
 237
 238 #if wxUSE_RICHEDIT
 239     EVT_CONTEXT_MENU(wxTextCtrl::OnContextMenu)
 240 #endif
 241
 242     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 243     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 244     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 245     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 246     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 247     EVT_MENU(wxID_CLEAR, wxTextCtrl::OnDelete)
 248     EVT_MENU(wxID_SELECTALL, wxTextCtrl::OnSelectAll)
 249
 250     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 251     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 252     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 253     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 254     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 255     EVT_UPDATE_UI(wxID_CLEAR, wxTextCtrl::OnUpdateDelete)
 256     EVT_UPDATE_UI(wxID_SELECTALL, wxTextCtrl::OnUpdateSelectAll)
 257
 258     EVT_SET_FOCUS(wxTextCtrl::OnSetFocus)
 259 END_EVENT_TABLE()
 260
 261 // ============================================================================
 262 // implementation
 263 // ============================================================================
 264
 265 // ----------------------------------------------------------------------------
 266 // creation
 267 // ----------------------------------------------------------------------------
 268
 269 void wxTextCtrl::Init()
 270 {
 271 #if wxUSE_RICHEDIT
 272     m_verRichEdit = 0;
 273 #endif // wxUSE_RICHEDIT
 274
 275 #if wxUSE_INKEDIT && wxUSE_RICHEDIT
 276     m_isInkEdit = 0;
 277 #endif
 278
 279     m_privateContextMenu = NULL;
 280     m_updatesCount = -1;
 281     m_isNativeCaretShown = true;
 282 }
 283
 284 wxTextCtrl::~wxTextCtrl()
 285 {
 286     delete m_privateContextMenu;
 287 }
 288
 289 bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id,
 290                         const wxString& value,
 291                         const wxPoint& pos,
 292                         const wxSize& size,
 293                         long style,
 294                         const wxValidator& validator,
 295                         const wxString& name)
 296 {
 297 #ifdef __WXWINCE__
 298     if ((style & wxBORDER_MASK) == 0)
 299         style |= wxBORDER_SIMPLE;
 300 #endif
 301
 302     // base initialization
 303     if ( !CreateControl(parent, id, pos, size, style, validator, name) )
 304         return false;
 305
 306     // translate wxWin style flags to MSW ones
 307     WXDWORD msStyle = MSWGetCreateWindowFlags();
 308
 309     // do create the control - either an EDIT or RICHEDIT
 310     wxString windowClass = wxT("EDIT");
 311
 312 #if defined(__POCKETPC__) || defined(__SMARTPHONE__)
 313     // A control that capitalizes the first letter
 314     if (style & wxTE_CAPITALIZE)
 315         windowClass = wxT("CAPEDIT");
 316 #endif
 317
 318 #if wxUSE_RICHEDIT
 319     if ( m_windowStyle & wxTE_AUTO_URL )
 320     {
 321         // automatic URL detection only works in RichEdit 2.0+
 322         m_windowStyle |= wxTE_RICH2;
 323     }
 324
 325     if ( m_windowStyle & wxTE_RICH2 )
 326     {
 327         // using richedit 2.0 implies using wxTE_RICH
 328         m_windowStyle |= wxTE_RICH;
 329     }
 330
 331     // we need to load the richedit DLL before creating the rich edit control
 332     if ( m_windowStyle & wxTE_RICH )
 333     {
 334         // versions 2.0, 3.0 and 4.1 of rich edit are mostly compatible with
 335         // each other but not with version 1.0, so we have separate flags for
 336         // the version 1.0 and the others (and so m_verRichEdit may be 0 (plain
 337         // EDIT control), 1 for version 1.0 or 2 for any higher version)
 338         //
 339         // notice that 1.0 has no Unicode support at all so in Unicode build we
 340         // must use another version
 341
 342 #if wxUSE_UNICODE
 343         m_verRichEdit = 2;
 344 #else // !wxUSE_UNICODE
 345         m_verRichEdit = m_windowStyle & wxTE_RICH2 ? 2 : 1;
 346 #endif // wxUSE_UNICODE/!wxUSE_UNICODE
 347
 348 #if wxUSE_INKEDIT
 349         // First test if we can load an ink edit control. Normally, all edit
 350         // controls will be made ink edit controls if a tablet environment is
 351         // found (or if msw.inkedit != 0 and the InkEd.dll is present).
 352         // However, an application can veto ink edit controls by either specifying
 353         // msw.inkedit = 0 or by removing wxTE_RICH[2] from the style.
 354         //
 355         if ((wxSystemSettings::HasFeature(wxSYS_TABLET_PRESENT) || wxSystemOptions::GetOptionInt(wxT("msw.inkedit")) != 0) &&
 356             !(wxSystemOptions::HasOption(wxT("msw.inkedit")) && wxSystemOptions::GetOptionInt(wxT("msw.inkedit")) == 0))
 357         {
 358             if (wxRichEditModule::LoadInkEdit())
 359             {
 360                 windowClass = INKEDIT_CLASS;
 361
 362 #if wxUSE_INKEDIT && wxUSE_RICHEDIT
 363                 m_isInkEdit = 1;
 364 #endif
 365
 366                 // Fake rich text version for other calls
 367                 m_verRichEdit = 2;
 368             }
 369         }
 370 #endif
 371
 372         if (!IsInkEdit())
 373         {
 374             if ( m_verRichEdit == 2 )
 375             {
 376                 if ( wxRichEditModule::Load(wxRichEditModule::Version_41) )
 377                 {
 378                     // yes, class name for version 4.1 really is 5.0
 379                     windowClass = _T("RICHEDIT50W");
 380                 }
 381                 else if ( wxRichEditModule::Load(wxRichEditModule::Version_2or3) )
 382                 {
 383                     windowClass = _T("RichEdit20")
 384 #if wxUSE_UNICODE
 385                                 _T("W");
 386 #else // ANSI
 387                                 _T("A");
 388 #endif // Unicode/ANSI
 389                 }
 390                 else // failed to load msftedit.dll and riched20.dll
 391                 {
 392                     m_verRichEdit = 1;
 393                 }
 394             }
 395
 396             if ( m_verRichEdit == 1 )
 397             {
 398                 if ( wxRichEditModule::Load(wxRichEditModule::Version_1) )
 399                 {
 400                     windowClass = _T("RICHEDIT");
 401                 }
 402                 else // failed to load any richedit control DLL
 403                 {
 404                     // only give the error msg once if the DLL can't be loaded
 405                     static bool s_errorGiven = false; // MT ok as only used by GUI
 406
 407                     if ( !s_errorGiven )
 408                     {
 409                         wxLogError(_("Impossible to create a rich edit control, using simple text control instead. Please reinstall riched32.dll"));
 410
 411                         s_errorGiven = true;
 412                     }
 413
 414                     m_verRichEdit = 0;
 415                 }
 416             }
 417         } // !useInkEdit
 418     }
 419 #endif // wxUSE_RICHEDIT
 420
 421     // we need to turn '\n's into "\r\n"s for the multiline controls
 422     wxString valueWin;
 423     if ( m_windowStyle & wxTE_MULTILINE )
 424     {
 425         valueWin = wxTextFile::Translate(value, wxTextFileType_Dos);
 426     }
 427     else // single line
 428     {
 429         valueWin = value;
 430     }
 431
 432     if ( !MSWCreateControl(windowClass, msStyle, pos, size, valueWin) )
 433         return false;
 434
 435 #if wxUSE_RICHEDIT
 436     if (IsRich())
 437     {
 438 #if wxUSE_INKEDIT
 439         if (IsInkEdit())
 440         {
 441             // Pass IEM_InsertText (0) as wParam, in order to have the ink always
 442             // converted to text.
 443             ::SendMessage(GetHwnd(), EM_SETINKINSERTMODE, 0, 0);
 444
 445             // Make sure the mouse can be used for input
 446             ::SendMessage(GetHwnd(), EM_SETUSEMOUSEFORINPUT, 1, 0);
 447         }
 448 #endif
 449
 450         // enable the events we're interested in: we want to get EN_CHANGE as
 451         // for the normal controls
 452         LPARAM mask = ENM_CHANGE;
 453
 454         if (GetRichVersion() == 1 && !IsInkEdit())
 455         {
 456             // we also need EN_MSGFILTER for richedit 1.0 for the reasons
 457             // explained in its handler
 458            mask |= ENM_MOUSEEVENTS;
 459
 460            // we also need to force the appearance of the vertical scrollbar
 461            // initially as otherwise the control doesn't refresh correctly
 462            // after resize: but once the vertical scrollbar had been shown
 463            // (even if it's subsequently hidden) it does
 464            //
 465            // this is clearly a bug and for now it has been only noticed under
 466            // Windows XP, so if we're sure it works correctly under other
 467            // systems we could do this only for XP
 468            SetSize(-1, 1); // 1 is small enough to force vert scrollbar
 469            SetSize(size);
 470         }
 471         else if ( m_windowStyle & wxTE_AUTO_URL )
 472         {
 473             mask |= ENM_LINK;
 474
 475             ::SendMessage(GetHwnd(), EM_AUTOURLDETECT, TRUE, 0);
 476         }
 477
 478         ::SendMessage(GetHwnd(), EM_SETEVENTMASK, 0, mask);
 479     }
 480 #endif // wxUSE_RICHEDIT
 481
 482     return true;
 483 }
 484
 485 // Make sure the window style (etc.) reflects the HWND style (roughly)
 486 void wxTextCtrl::AdoptAttributesFromHWND()
 487 {
 488     wxWindow::AdoptAttributesFromHWND();
 489
 490     HWND hWnd = GetHwnd();
 491     long style = ::GetWindowLong(hWnd, GWL_STYLE);
 492
 493     // retrieve the style to see whether this is an edit or richedit ctrl
 494 #if wxUSE_RICHEDIT
 495     wxString classname = wxGetWindowClass(GetHWND());
 496
 497     if ( classname.IsSameAs(_T("EDIT"), false /* no case */) )
 498     {
 499         m_verRichEdit = 0;
 500     }
 501     else // rich edit?
 502     {
 503         wxChar c;
 504         if ( wxSscanf(classname, _T("RichEdit%d0%c"), &m_verRichEdit, &c) != 2 )
 505         {
 506             wxLogDebug(_T("Unknown edit control '%s'."), classname.c_str());
 507
 508             m_verRichEdit = 0;
 509         }
 510     }
 511 #endif // wxUSE_RICHEDIT
 512
 513     if (style & ES_MULTILINE)
 514         m_windowStyle |= wxTE_MULTILINE;
 515     if (style & ES_PASSWORD)
 516         m_windowStyle |= wxTE_PASSWORD;
 517     if (style & ES_READONLY)
 518         m_windowStyle |= wxTE_READONLY;
 519     if (style & ES_WANTRETURN)
 520         m_windowStyle |= wxTE_PROCESS_ENTER;
 521     if (style & ES_CENTER)
 522         m_windowStyle |= wxTE_CENTRE;
 523     if (style & ES_RIGHT)
 524         m_windowStyle |= wxTE_RIGHT;
 525 }
 526
 527 WXDWORD wxTextCtrl::MSWGetStyle(long style, WXDWORD *exstyle) const
 528 {
 529     long msStyle = wxControl::MSWGetStyle(style, exstyle);
 530
 531     // styles which we alaways add by default
 532     if ( style & wxTE_MULTILINE )
 533     {
 534         wxASSERT_MSG( !(style & wxTE_PROCESS_ENTER),
 535                       wxT("wxTE_PROCESS_ENTER style is ignored for multiline text controls (they always process it)") );
 536
 537         msStyle |= ES_MULTILINE | ES_WANTRETURN;
 538         if ( !(style & wxTE_NO_VSCROLL) )
 539         {
 540             // always adjust the vertical scrollbar automatically if we have it
 541             msStyle |= WS_VSCROLL | ES_AUTOVSCROLL;
 542
 543 #if wxUSE_RICHEDIT
 544             // we have to use this style for the rich edit controls because
 545             // without it the vertical scrollbar never appears at all in
 546             // richedit 3.0 because of our ECO_NOHIDESEL hack (search for it)
 547             if ( style & wxTE_RICH2 )
 548             {
 549                 msStyle |= ES_DISABLENOSCROLL;
 550             }
 551 #endif // wxUSE_RICHEDIT
 552         }
 553
 554         style |= wxTE_PROCESS_ENTER;
 555     }
 556     else // !multiline
 557     {
 558         // there is really no reason to not have this style for single line
 559         // text controls
 560         msStyle |= ES_AUTOHSCROLL;
 561     }
 562
 563     // note that wxTE_DONTWRAP is the same as wxHSCROLL so if we have a horz
 564     // scrollbar, there is no wrapping -- which makes sense
 565     if ( style & wxTE_DONTWRAP )
 566     {
 567         // automatically scroll the control horizontally as necessary
 568         //
 569         // NB: ES_AUTOHSCROLL is needed for richedit controls or they don't
 570         //     show horz scrollbar at all, even in spite of WS_HSCROLL, and as
 571         //     it doesn't seem to do any harm for plain edit controls, add it
 572         //     always
 573         msStyle |= WS_HSCROLL | ES_AUTOHSCROLL;
 574     }
 575
 576     if ( style & wxTE_READONLY )
 577         msStyle |= ES_READONLY;
 578
 579     if ( style & wxTE_PASSWORD )
 580         msStyle |= ES_PASSWORD;
 581
 582     if ( style & wxTE_NOHIDESEL )
 583         msStyle |= ES_NOHIDESEL;
 584
 585     // note that we can't do do "& wxTE_LEFT" as wxTE_LEFT == 0
 586     if ( style & wxTE_CENTRE )
 587         msStyle |= ES_CENTER;
 588     else if ( style & wxTE_RIGHT )
 589         msStyle |= ES_RIGHT;
 590     else
 591         msStyle |= ES_LEFT; // ES_LEFT is 0 as well but for consistency...
 592
 593     return msStyle;
 594 }
 595
 596 void wxTextCtrl::SetWindowStyleFlag(long style)
 597 {
 598 #if wxUSE_RICHEDIT
 599     // we have to deal with some styles separately because they can't be
 600     // changed by simply calling SetWindowLong(GWL_STYLE) but can be changed
 601     // using richedit-specific EM_SETOPTIONS
 602     if ( IsRich() &&
 603             ((style & wxTE_NOHIDESEL) != (GetWindowStyle() & wxTE_NOHIDESEL)) )
 604     {
 605         bool set = (style & wxTE_NOHIDESEL) != 0;
 606
 607         ::SendMessage(GetHwnd(), EM_SETOPTIONS, set ? ECOOP_OR : ECOOP_AND,
 608                       set ? ECO_NOHIDESEL : ~ECO_NOHIDESEL);
 609     }
 610 #endif // wxUSE_RICHEDIT
 611
 612     wxControl::SetWindowStyleFlag(style);
 613 }
 614
 615 // ----------------------------------------------------------------------------
 616 // set/get the controls text
 617 // ----------------------------------------------------------------------------
 618
 619 wxString wxTextCtrl::GetValue() const
 620 {
 621     // range 0..-1 is special for GetRange() and means to retrieve all text
 622     return GetRange(0, -1);
 623 }
 624
 625 wxString wxTextCtrl::GetRange(long from, long to) const
 626 {
 627     wxString str;
 628
 629     if ( from >= to && to != -1 )
 630     {
 631         // nothing to retrieve
 632         return str;
 633     }
 634
 635 #if wxUSE_RICHEDIT
 636     if ( IsRich() )
 637     {
 638         int len = GetWindowTextLength(GetHwnd());
 639         if ( len > from )
 640         {
 641             if ( to == -1 )
 642                 to = len;
 643
 644 #if !wxUSE_UNICODE
 645             // we must use EM_STREAMOUT if we don't want to lose all characters
 646             // not representable in the current character set (EM_GETTEXTRANGE
 647             // simply replaces them with question marks...)
 648             if ( GetRichVersion() > 1 )
 649             {
 650                 // we must have some encoding, otherwise any 8bit chars in the
 651                 // control are simply *lost* (replaced by '?')
 652                 wxFontEncoding encoding = wxFONTENCODING_SYSTEM;
 653
 654                 wxFont font = m_defaultStyle.GetFont();
 655                 if ( !font.Ok() )
 656                     font = GetFont();
 657
 658                 if ( font.Ok() )
 659                 {
 660                    encoding = font.GetEncoding();
 661                 }
 662
 663                 if ( encoding == wxFONTENCODING_SYSTEM )
 664                 {
 665                     encoding = wxLocale::GetSystemEncoding();
 666                 }
 667
 668                 if ( encoding == wxFONTENCODING_SYSTEM )
 669                 {
 670                     encoding = wxFONTENCODING_ISO8859_1;
 671                 }
 672
 673                 str = StreamOut(encoding);
 674
 675                 if ( !str.empty() )
 676                 {
 677                     // we have to manually extract the required part, luckily
 678                     // this is easy in this case as EOL characters in str are
 679                     // just LFs because we remove CRs in wxRichEditStreamOut
 680                     str = str.Mid(from, to - from);
 681                 }
 682             }
 683
 684             // StreamOut() wasn't used or failed, try to do it in normal way
 685             if ( str.empty() )
 686 #endif // !wxUSE_UNICODE
 687             {
 688                 // alloc one extra WORD as needed by the control
 689                 wxStringBuffer tmp(str, ++len);
 690                 wxChar *p = tmp;
 691
 692                 TEXTRANGE textRange;
 693                 textRange.chrg.cpMin = from;
 694                 textRange.chrg.cpMax = to;
 695                 textRange.lpstrText = p;
 696
 697                 (void)::SendMessage(GetHwnd(), EM_GETTEXTRANGE,
 698                                     0, (LPARAM)&textRange);
 699
 700                 if ( m_verRichEdit > 1 )
 701                 {
 702                     // RichEdit 2.0 uses just CR ('\r') for the
 703                     // newlines which is neither Unix nor Windows
 704                     // style - convert it to something reasonable
 705                     for ( ; *p; p++ )
 706                     {
 707                         if ( *p == _T('\r') )
 708                             *p = _T('\n');
 709                     }
 710                 }
 711             }
 712
 713             if ( m_verRichEdit == 1 )
 714             {
 715                 // convert to the canonical form - see comment below
 716                 str = wxTextFile::Translate(str, wxTextFileType_Unix);
 717             }
 718         }
 719         //else: no text at all, leave the string empty
 720     }
 721     else
 722 #endif // wxUSE_RICHEDIT
 723     {
 724         // retrieve all text
 725         str = wxGetWindowText(GetHWND());
 726
 727         // need only a range?
 728         if ( from < to )
 729         {
 730             str = str.Mid(from, to - from);
 731         }
 732
 733         // WM_GETTEXT uses standard DOS CR+LF (\r\n) convention - convert to the
 734         // canonical one (same one as above) for consistency with the other kinds
 735         // of controls and, more importantly, with the other ports
 736         str = wxTextFile::Translate(str, wxTextFileType_Unix);
 737     }
 738
 739     return str;
 740 }
 741
 742 void wxTextCtrl::SetValue(const wxString& value)
 743 {
 744     // if the text is long enough, it's faster to just set it instead of first
 745     // comparing it with the old one (chances are that it will be different
 746     // anyhow, this comparison is there to avoid flicker for small single-line
 747     // edit controls mostly)
 748     if ( (value.length() > 0x400) || (value != GetValue()) )
 749     {
 750         DoWriteText(value, false /* not selection only */);
 751
 752         // for compatibility, don't move the cursor when doing SetValue()
 753         SetInsertionPoint(0);
 754     }
 755     else // same text
 756     {
 757         // still send an event for consistency
 758         SendUpdateEvent();
 759     }
 760
 761     // we should reset the modified flag even if the value didn't really change
 762
 763     // mark the control as being not dirty - we changed its text, not the
 764     // user
 765     DiscardEdits();
 766 }
 767
 768 #if wxUSE_RICHEDIT && (!wxUSE_UNICODE || wxUSE_UNICODE_MSLU)
 769
 770 // TODO: using memcpy() would improve performance a lot for big amounts of text
 771
 772 DWORD CALLBACK
 773 wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb)
 774 {
 775     *pcb = 0;
 776
 777     const wchar_t ** const ppws = (const wchar_t **)dwCookie;
 778
 779     wchar_t *wbuf = (wchar_t *)buf;
 780     const wchar_t *wpc = *ppws;
 781     while ( cb && *wpc )
 782     {
 783         *wbuf++ = *wpc++;
 784
 785         cb -= sizeof(wchar_t);
 786         (*pcb) += sizeof(wchar_t);
 787     }
 788
 789     *ppws = wpc;
 790
 791     return 0;
 792 }
 793
 794 // helper struct used to pass parameters from wxTextCtrl to wxRichEditStreamOut
 795 struct wxStreamOutData
 796 {
 797     wchar_t *wpc;
 798     size_t len;
 799 };
 800
 801 DWORD CALLBACK
 802 wxRichEditStreamOut(DWORD_PTR dwCookie, BYTE *buf, LONG cb, LONG *pcb)
 803 {
 804     *pcb = 0;
 805
 806     wxStreamOutData *data = (wxStreamOutData *)dwCookie;
 807
 808     const wchar_t *wbuf = (const wchar_t *)buf;
 809     wchar_t *wpc = data->wpc;
 810     while ( cb )
 811     {
 812         wchar_t wch = *wbuf++;
 813
 814         // turn "\r\n" into "\n" on the fly
 815         if ( wch != L'\r' )
 816             *wpc++ = wch;
 817         else
 818             data->len--;
 819
 820         cb -= sizeof(wchar_t);
 821         (*pcb) += sizeof(wchar_t);
 822     }
 823
 824     data->wpc = wpc;
 825
 826     return 0;
 827 }
 828
 829
 830 #if wxUSE_UNICODE_MSLU
 831     #define UNUSED_IF_MSLU(param)
 832 #else
 833     #define UNUSED_IF_MSLU(param) param
 834 #endif
 835
 836 bool
 837 wxTextCtrl::StreamIn(const wxString& value,
 838                      wxFontEncoding UNUSED_IF_MSLU(encoding),
 839                      bool selectionOnly)
 840 {
 841 #if wxUSE_UNICODE_MSLU
 842     const wchar_t *wpc = value.c_str();
 843 #else // !wxUSE_UNICODE_MSLU
 844     wxCSConv conv(encoding);
 845
 846     const size_t len = conv.MB2WC(NULL, value, value.length());
 847
 848 #if wxUSE_WCHAR_T
 849     wxWCharBuffer wchBuf(len);
 850     wchar_t *wpc = wchBuf.data();
 851 #else
 852     wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
 853     wchar_t *wpc = wchBuf;
 854 #endif
 855
 856     conv.MB2WC(wpc, value, value.length());
 857 #endif // wxUSE_UNICODE_MSLU
 858
 859     // finally, stream it in the control
 860     EDITSTREAM eds;
 861     wxZeroMemory(eds);
 862     eds.dwCookie = (DWORD)&wpc;
 863     // the cast below is needed for broken (very) old mingw32 headers
 864     eds.pfnCallback = (EDITSTREAMCALLBACK)wxRichEditStreamIn;
 865
 866     // same problem as in DoWriteText(): we can get multiple events here
 867     UpdatesCountFilter ucf(m_updatesCount);
 868
 869     ::SendMessage(GetHwnd(), EM_STREAMIN,
 870                   SF_TEXT |
 871                   SF_UNICODE |
 872                   (selectionOnly ? SFF_SELECTION : 0),
 873                   (LPARAM)&eds);
 874
 875     // It's okay for EN_UPDATE to not be sent if the selection is empty and
 876     // the text is empty, otherwise warn the programmer about it.
 877     wxASSERT_MSG( ucf.GotUpdate() || ( !HasSelection() && value.empty() ),
 878                   _T("EM_STREAMIN didn't send EN_UPDATE?") );
 879
 880     if ( eds.dwError )
 881     {
 882         wxLogLastError(_T("EM_STREAMIN"));
 883     }
 884
 885 #if !wxUSE_WCHAR_T
 886     free(wchBuf);
 887 #endif // !wxUSE_WCHAR_T
 888
 889     return true;
 890 }
 891
 892 #if !wxUSE_UNICODE_MSLU
 893
 894 wxString
 895 wxTextCtrl::StreamOut(wxFontEncoding encoding, bool selectionOnly) const
 896 {
 897     wxString out;
 898
 899     const int len = GetWindowTextLength(GetHwnd());
 900
 901 #if wxUSE_WCHAR_T
 902     wxWCharBuffer wchBuf(len);
 903     wchar_t *wpc = wchBuf.data();
 904 #else
 905     wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
 906     wchar_t *wpc = wchBuf;
 907 #endif
 908
 909     wxStreamOutData data;
 910     data.wpc = wpc;
 911     data.len = len;
 912
 913     EDITSTREAM eds;
 914     wxZeroMemory(eds);
 915     eds.dwCookie = (DWORD)&data;
 916     eds.pfnCallback = wxRichEditStreamOut;
 917
 918     ::SendMessage
 919       (
 920         GetHwnd(),
 921         EM_STREAMOUT,
 922         SF_TEXT | SF_UNICODE | (selectionOnly ? SFF_SELECTION : 0),
 923         (LPARAM)&eds
 924       );
 925
 926     if ( eds.dwError )
 927     {
 928         wxLogLastError(_T("EM_STREAMOUT"));
 929     }
 930     else // streamed out ok
 931     {
 932         // NUL-terminate the string because its length could have been
 933         // decreased by wxRichEditStreamOut
 934         *(wchBuf.data() + data.len) = L'\0';
 935
 936         // now convert to the given encoding (this is a possibly lossful
 937         // conversion but what else can we do)
 938         wxCSConv conv(encoding);
 939         size_t lenNeeded = conv.WC2MB(NULL, wchBuf, 0);
 940         if ( lenNeeded++ )
 941         {
 942             conv.WC2MB(wxStringBuffer(out, lenNeeded), wchBuf, lenNeeded);
 943         }
 944     }
 945
 946 #if !wxUSE_WCHAR_T
 947     free(wchBuf);
 948 #endif // !wxUSE_WCHAR_T
 949
 950     return out;
 951 }
 952
 953 #endif // !wxUSE_UNICODE_MSLU
 954
 955 #endif // wxUSE_RICHEDIT
 956
 957 void wxTextCtrl::WriteText(const wxString& value)
 958 {
 959     DoWriteText(value);
 960 }
 961
 962 void wxTextCtrl::DoWriteText(const wxString& value, bool selectionOnly)
 963 {
 964     wxString valueDos;
 965     if ( m_windowStyle & wxTE_MULTILINE )
 966         valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
 967     else
 968         valueDos = value;
 969
 970 #if wxUSE_RICHEDIT
 971     // there are several complications with the rich edit controls here
 972     bool done = false;
 973     if ( IsRich() )
 974     {
 975         // first, ensure that the new text will be in the default style
 976         if ( !m_defaultStyle.IsDefault() )
 977         {
 978             long start, end;
 979             GetSelection(&start, &end);
 980             SetStyle(start, end, m_defaultStyle);
 981         }
 982
 983 #if wxUSE_UNICODE_MSLU
 984         // RichEdit doesn't have Unicode version of EM_REPLACESEL on Win9x,
 985         // but EM_STREAMIN works
 986         if ( wxUsingUnicowsDll() && GetRichVersion() > 1 )
 987         {
 988            done = StreamIn(valueDos, wxFONTENCODING_SYSTEM, selectionOnly);
 989         }
 990 #endif // wxUSE_UNICODE_MSLU
 991
 992 #if !wxUSE_UNICODE
 993         // next check if the text we're inserting must be shown in a non
 994         // default charset -- this only works for RichEdit > 1.0
 995         if ( GetRichVersion() > 1 )
 996         {
 997             wxFont font = m_defaultStyle.GetFont();
 998             if ( !font.Ok() )
 999                 font = GetFont();
1000
1001             if ( font.Ok() )
1002             {
1003                wxFontEncoding encoding = font.GetEncoding();
1004                if ( encoding != wxFONTENCODING_SYSTEM )
1005                {
1006                    // we have to use EM_STREAMIN to force richedit control 2.0+
1007                    // to show any text in the non default charset -- otherwise
1008                    // it thinks it knows better than we do and always shows it
1009                    // in the default one
1010                    done = StreamIn(valueDos, encoding, selectionOnly);
1011                }
1012             }
1013         }
1014 #endif // !wxUSE_UNICODE
1015     }
1016
1017     if ( !done )
1018 #endif // wxUSE_RICHEDIT
1019     {
1020         // in some cases we get 2 EN_CHANGE notifications after the SendMessage
1021         // call (this happens for plain EDITs with EM_REPLACESEL and under some
1022         // -- undetermined -- conditions with rich edit) and sometimes we don't
1023         // get any events at all (plain EDIT with WM_SETTEXT), so ensure that
1024         // we generate exactly one of them by ignoring all but the first one in
1025         // SendUpdateEvent() and generating one ourselves if we hadn't got any
1026         // notifications from Windows
1027         UpdatesCountFilter ucf(m_updatesCount);
1028
1029         ::SendMessage(GetHwnd(), selectionOnly ? EM_REPLACESEL : WM_SETTEXT,
1030                       // EM_REPLACESEL takes 1 to indicate the operation should be redoable
1031                       selectionOnly ? 1 : 0, (LPARAM)valueDos.c_str());
1032
1033         if ( !ucf.GotUpdate() )
1034         {
1035             SendUpdateEvent();
1036         }
1037     }
1038 }
1039
1040 void wxTextCtrl::AppendText(const wxString& text)
1041 {
1042     SetInsertionPointEnd();
1043
1044     WriteText(text);
1045
1046 #if wxUSE_RICHEDIT
1047     // don't do this if we're frozen, saves some time
1048     if ( !IsFrozen() && IsMultiLine() && GetRichVersion() > 1 )
1049     {
1050         // setting the caret to the end and showing it simply doesn't work for
1051         // RichEdit 2.0 -- force it to still do what we want
1052         ::SendMessage(GetHwnd(), EM_LINESCROLL, 0, GetNumberOfLines());
1053     }
1054 #endif // wxUSE_RICHEDIT
1055 }
1056
1057 void wxTextCtrl::Clear()
1058 {
1059     ::SetWindowText(GetHwnd(), wxEmptyString);
1060
1061 #if wxUSE_RICHEDIT
1062     if ( !IsRich() )
1063 #endif // wxUSE_RICHEDIT
1064     {
1065         // rich edit controls send EN_UPDATE from WM_SETTEXT handler themselves
1066         // but the normal ones don't -- make Clear() behaviour consistent by
1067         // always sending this event
1068
1069         // Windows already sends an update event for single-line
1070         // controls.
1071         if ( m_windowStyle & wxTE_MULTILINE )
1072             SendUpdateEvent();
1073     }
1074 }
1075
1076 #ifdef __WIN32__
1077
1078 bool wxTextCtrl::EmulateKeyPress(const wxKeyEvent& event)
1079 {
1080     SetFocus();
1081
1082     size_t lenOld = GetValue().length();
1083
1084     wxUint32 code = event.GetRawKeyCode();
1085     ::keybd_event((BYTE)code, 0, 0 /* key press */, 0);
1086     ::keybd_event((BYTE)code, 0, KEYEVENTF_KEYUP, 0);
1087
1088     // assume that any alphanumeric key changes the total number of characters
1089     // in the control - this should work in 99% of cases
1090     return GetValue().length() != lenOld;
1091 }
1092
1093 #endif // __WIN32__
1094
1095 // ----------------------------------------------------------------------------
1096 // Clipboard operations
1097 // ----------------------------------------------------------------------------
1098
1099 void wxTextCtrl::Copy()
1100 {
1101     if (CanCopy())
1102     {
1103         ::SendMessage(GetHwnd(), WM_COPY, 0, 0L);
1104     }
1105 }
1106
1107 void wxTextCtrl::Cut()
1108 {
1109     if (CanCut())
1110     {
1111         ::SendMessage(GetHwnd(), WM_CUT, 0, 0L);
1112     }
1113 }
1114
1115 void wxTextCtrl::Paste()
1116 {
1117     if (CanPaste())
1118     {
1119         ::SendMessage(GetHwnd(), WM_PASTE, 0, 0L);
1120     }
1121 }
1122
1123 bool wxTextCtrl::HasSelection() const
1124 {
1125     long from, to;
1126     GetSelection(&from, &to);
1127     return from != to;
1128 }
1129
1130 bool wxTextCtrl::CanCopy() const
1131 {
1132     // Can copy if there's a selection
1133     return HasSelection();
1134 }
1135
1136 bool wxTextCtrl::CanCut() const
1137 {
1138     return CanCopy() && IsEditable();
1139 }
1140
1141 bool wxTextCtrl::CanPaste() const
1142 {
1143     if ( !IsEditable() )
1144         return false;
1145
1146 #if wxUSE_RICHEDIT
1147     if ( IsRich() )
1148     {
1149         UINT cf = 0; // 0 == any format
1150
1151         return ::SendMessage(GetHwnd(), EM_CANPASTE, cf, 0) != 0;
1152     }
1153 #endif // wxUSE_RICHEDIT
1154
1155     // Standard edit control: check for straight text on clipboard
1156     if ( !::OpenClipboard(GetHwndOf(wxTheApp->GetTopWindow())) )
1157         return false;
1158
1159     bool isTextAvailable = ::IsClipboardFormatAvailable(CF_TEXT) != 0;
1160     ::CloseClipboard();
1161
1162     return isTextAvailable;
1163 }
1164
1165 // ----------------------------------------------------------------------------
1166 // Accessors
1167 // ----------------------------------------------------------------------------
1168
1169 void wxTextCtrl::SetEditable(bool editable)
1170 {
1171     HWND hWnd = GetHwnd();
1172     ::SendMessage(hWnd, EM_SETREADONLY, (WPARAM)!editable, (LPARAM)0L);
1173 }
1174
1175 void wxTextCtrl::SetInsertionPoint(long pos)
1176 {
1177     DoSetSelection(pos, pos);
1178 }
1179
1180 void wxTextCtrl::SetInsertionPointEnd()
1181 {
1182     // we must not do anything if the caret is already there because calling
1183     // SetInsertionPoint() thaws the controls if Freeze() had been called even
1184     // if it doesn't actually move the caret anywhere and so the simple fact of
1185     // doing it results in horrible flicker when appending big amounts of text
1186     // to the control in a few chunks (see DoAddText() test in the text sample)
1187     if ( GetInsertionPoint() == GetLastPosition() )
1188     {
1189         return;
1190     }
1191
1192     long pos;
1193
1194 #if wxUSE_RICHEDIT
1195     if ( m_verRichEdit == 1 )
1196     {
1197         // we don't have to waste time calling GetLastPosition() in this case
1198         pos = -1;
1199     }
1200     else // !RichEdit 1.0
1201 #endif // wxUSE_RICHEDIT
1202     {
1203         pos = GetLastPosition();
1204     }
1205
1206     SetInsertionPoint(pos);
1207 }
1208
1209 long wxTextCtrl::GetInsertionPoint() const
1210 {
1211 #if wxUSE_RICHEDIT
1212     if ( IsRich() )
1213     {
1214         CHARRANGE range;
1215         range.cpMin = 0;
1216         range.cpMax = 0;
1217         ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
1218         return range.cpMin;
1219     }
1220 #endif // wxUSE_RICHEDIT
1221
1222     DWORD Pos = (DWORD)::SendMessage(GetHwnd(), EM_GETSEL, 0, 0L);
1223     return Pos & 0xFFFF;
1224 }
1225
1226 wxTextPos wxTextCtrl::GetLastPosition() const
1227 {
1228     int numLines = GetNumberOfLines();
1229     long posStartLastLine = XYToPosition(0, numLines - 1);
1230
1231     long lenLastLine = GetLengthOfLineContainingPos(posStartLastLine);
1232
1233     return posStartLastLine + lenLastLine;
1234 }
1235
1236 // If the return values from and to are the same, there is no
1237 // selection.
1238 void wxTextCtrl::GetSelection(long* from, long* to) const
1239 {
1240 #if wxUSE_RICHEDIT
1241     if ( IsRich() )
1242     {
1243         CHARRANGE charRange;
1244         ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &charRange);
1245
1246         *from = charRange.cpMin;
1247         *to = charRange.cpMax;
1248     }
1249     else
1250 #endif // !wxUSE_RICHEDIT
1251     {
1252         DWORD dwStart, dwEnd;
1253         ::SendMessage(GetHwnd(), EM_GETSEL, (WPARAM)&dwStart, (LPARAM)&dwEnd);
1254
1255         *from = dwStart;
1256         *to = dwEnd;
1257     }
1258 }
1259
1260 bool wxTextCtrl::IsEditable() const
1261 {
1262     // strangely enough, we may be called before the control is created: our
1263     // own Create() calls MSWGetStyle() which calls AcceptsFocus() which calls
1264     // us
1265     if ( !m_hWnd )
1266         return true;
1267
1268     long style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1269
1270     return (style & ES_READONLY) == 0;
1271 }
1272
1273 // ----------------------------------------------------------------------------
1274 // selection
1275 // ----------------------------------------------------------------------------
1276
1277 void wxTextCtrl::SetSelection(long from, long to)
1278 {
1279     // if from and to are both -1, it means (in wxWidgets) that all text should
1280     // be selected - translate into Windows convention
1281     if ( (from == -1) && (to == -1) )
1282     {
1283         from = 0;
1284         to = -1;
1285     }
1286
1287     DoSetSelection(from, to);
1288 }
1289
1290 void wxTextCtrl::DoSetSelection(long from, long to, bool scrollCaret)
1291 {
1292     HWND hWnd = GetHwnd();
1293
1294 #if wxUSE_RICHEDIT
1295     if ( IsRich() )
1296     {
1297         CHARRANGE range;
1298         range.cpMin = from;
1299         range.cpMax = to;
1300         ::SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM) &range);
1301     }
1302     else
1303 #endif // wxUSE_RICHEDIT
1304     {
1305         ::SendMessage(hWnd, EM_SETSEL, (WPARAM)from, (LPARAM)to);
1306     }
1307
1308     if ( scrollCaret && !IsFrozen() )
1309     {
1310 #if wxUSE_RICHEDIT
1311         // richedit 3.0 (i.e. the version living in riched20.dll distributed
1312         // with Windows 2000 and beyond) doesn't honour EM_SCROLLCARET when
1313         // emulating richedit 2.0 unless the control has focus or ECO_NOHIDESEL
1314         // option is set (but it does work ok in richedit 1.0 mode...)
1315         //
1316         // so to make it work we either need to give focus to it here which
1317         // will probably create many problems (dummy focus events; window
1318         // containing the text control being brought to foreground
1319         // unexpectedly; ...) or to temporarily set ECO_NOHIDESEL which may
1320         // create other problems too -- and in fact it does because if we turn
1321         // on/off this style while appending the text to the control, the
1322         // vertical scrollbar never appears in it even if we append tons of
1323         // text and to work around this the only solution I found was to use
1324         // ES_DISABLENOSCROLL
1325         //
1326         // this is very ugly but I don't see any other way to make this work
1327         long style = 0;
1328         if ( GetRichVersion() > 1 )
1329         {
1330             if ( !HasFlag(wxTE_NOHIDESEL) )
1331             {
1332                 // setting ECO_NOHIDESEL also sets WS_VISIBLE and possibly
1333                 // others, remember the style so we can reset it later if needed
1334                 style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1335                 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1336                               ECOOP_OR, ECO_NOHIDESEL);
1337             }
1338             //else: everything is already ok
1339         }
1340 #endif // wxUSE_RICHEDIT
1341
1342         ::SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
1343
1344 #if wxUSE_RICHEDIT
1345         // restore ECO_NOHIDESEL if we changed it
1346         if ( GetRichVersion() > 1 && !HasFlag(wxTE_NOHIDESEL) )
1347         {
1348             ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1349                           ECOOP_AND, ~ECO_NOHIDESEL);
1350             if ( style != ::GetWindowLong(GetHwnd(), GWL_STYLE) )
1351                 ::SetWindowLong(GetHwnd(), GWL_STYLE, style);
1352         }
1353 #endif // wxUSE_RICHEDIT
1354     }
1355 }
1356
1357 // ----------------------------------------------------------------------------
1358 // Working with files
1359 // ----------------------------------------------------------------------------
1360
1361 bool wxTextCtrl::LoadFile(const wxString& file)
1362 {
1363     if ( wxTextCtrlBase::LoadFile(file) )
1364     {
1365         // update the size limit if needed
1366         AdjustSpaceLimit();
1367
1368         return true;
1369     }
1370
1371     return false;
1372 }
1373
1374 // ----------------------------------------------------------------------------
1375 // Editing
1376 // ----------------------------------------------------------------------------
1377
1378 void wxTextCtrl::Replace(long from, long to, const wxString& value)
1379 {
1380     // Set selection and remove it
1381     DoSetSelection(from, to, false /* don't scroll caret into view */);
1382
1383     DoWriteText(value, true /* selection only */);
1384 }
1385
1386 void wxTextCtrl::Remove(long from, long to)
1387 {
1388     Replace(from, to, wxEmptyString);
1389 }
1390
1391 bool wxTextCtrl::IsModified() const
1392 {
1393     return ::SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0;
1394 }
1395
1396 void wxTextCtrl::MarkDirty()
1397 {
1398     ::SendMessage(GetHwnd(), EM_SETMODIFY, TRUE, 0L);
1399 }
1400
1401 void wxTextCtrl::DiscardEdits()
1402 {
1403     ::SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0L);
1404 }
1405
1406 int wxTextCtrl::GetNumberOfLines() const
1407 {
1408     return (int)::SendMessage(GetHwnd(), EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0);
1409 }
1410
1411 // ----------------------------------------------------------------------------
1412 // Positions <-> coords
1413 // ----------------------------------------------------------------------------
1414
1415 long wxTextCtrl::XYToPosition(long x, long y) const
1416 {
1417     // This gets the char index for the _beginning_ of this line
1418     long charIndex = ::SendMessage(GetHwnd(), EM_LINEINDEX, (WPARAM)y, (LPARAM)0);
1419
1420     return charIndex + x;
1421 }
1422
1423 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
1424 {
1425     HWND hWnd = GetHwnd();
1426
1427     // This gets the line number containing the character
1428     long lineNo;
1429 #if wxUSE_RICHEDIT
1430     if ( IsRich() )
1431     {
1432         lineNo = ::SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, (LPARAM)pos);
1433     }
1434     else
1435 #endif // wxUSE_RICHEDIT
1436     {
1437         lineNo = ::SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, 0);
1438     }
1439
1440     if ( lineNo == -1 )
1441     {
1442         // no such line
1443         return false;
1444     }
1445
1446     // This gets the char index for the _beginning_ of this line
1447     long charIndex = ::SendMessage(hWnd, EM_LINEINDEX, (WPARAM)lineNo, (LPARAM)0);
1448     if ( charIndex == -1 )
1449     {
1450         return false;
1451     }
1452
1453     // The X position must therefore be the different between pos and charIndex
1454     if ( x )
1455         *x = pos - charIndex;
1456     if ( y )
1457         *y = lineNo;
1458
1459     return true;
1460 }
1461
1462 wxTextCtrlHitTestResult
1463 wxTextCtrl::HitTest(const wxPoint& pt, long *posOut) const
1464 {
1465     // first get the position from Windows
1466     LPARAM lParam;
1467
1468 #if wxUSE_RICHEDIT
1469     POINTL ptl;
1470     if ( IsRich() )
1471     {
1472         // for rich edit controls the position is passed iva the struct fields
1473         ptl.x = pt.x;
1474         ptl.y = pt.y;
1475         lParam = (LPARAM)&ptl;
1476     }
1477     else
1478 #endif // wxUSE_RICHEDIT
1479     {
1480         // for the plain ones, we are limited to 16 bit positions which are
1481         // combined in a single 32 bit value
1482         lParam = MAKELPARAM(pt.x, pt.y);
1483     }
1484
1485     LRESULT pos = ::SendMessage(GetHwnd(), EM_CHARFROMPOS, 0, lParam);
1486
1487     if ( pos == -1 )
1488     {
1489         // this seems to indicate an error...
1490         return wxTE_HT_UNKNOWN;
1491     }
1492
1493 #if wxUSE_RICHEDIT
1494     if ( !IsRich() )
1495 #endif // wxUSE_RICHEDIT
1496     {
1497         // for plain EDIT controls the higher word contains something else
1498         pos = LOWORD(pos);
1499     }
1500
1501
1502     // next determine where it is relatively to our point: EM_CHARFROMPOS
1503     // always returns the closest character but we need to be more precise, so
1504     // double check that we really are where it pretends
1505     POINTL ptReal;
1506
1507 #if wxUSE_RICHEDIT
1508     // FIXME: we need to distinguish between richedit 2 and 3 here somehow but
1509     //        we don't know how to do it
1510     if ( IsRich() )
1511     {
1512         ::SendMessage(GetHwnd(), EM_POSFROMCHAR, (WPARAM)&ptReal, pos);
1513     }
1514     else
1515 #endif // wxUSE_RICHEDIT
1516     {
1517         LRESULT lRc = ::SendMessage(GetHwnd(), EM_POSFROMCHAR, pos, 0);
1518
1519         if ( lRc == -1 )
1520         {
1521             // this is apparently returned when pos corresponds to the last
1522             // position
1523             ptReal.x =
1524             ptReal.y = 0;
1525         }
1526         else
1527         {
1528             ptReal.x = LOWORD(lRc);
1529             ptReal.y = HIWORD(lRc);
1530         }
1531     }
1532
1533     wxTextCtrlHitTestResult rc;
1534
1535     if ( pt.y > ptReal.y + GetCharHeight() )
1536         rc = wxTE_HT_BELOW;
1537     else if ( pt.x > ptReal.x + GetCharWidth() )
1538         rc = wxTE_HT_BEYOND;
1539     else
1540         rc = wxTE_HT_ON_TEXT;
1541
1542     if ( posOut )
1543         *posOut = pos;
1544
1545     return rc;
1546 }
1547
1548 // ----------------------------------------------------------------------------
1549 //
1550 // ----------------------------------------------------------------------------
1551
1552 void wxTextCtrl::ShowPosition(long pos)
1553 {
1554     HWND hWnd = GetHwnd();
1555
1556     // To scroll to a position, we pass the number of lines and characters
1557     // to scroll *by*. This means that we need to:
1558     // (1) Find the line position of the current line.
1559     // (2) Find the line position of pos.
1560     // (3) Scroll by (pos - current).
1561     // For now, ignore the horizontal scrolling.
1562
1563     // Is this where scrolling is relative to - the line containing the caret?
1564     // Or is the first visible line??? Try first visible line.
1565 //    int currentLineLineNo1 = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)-1, (LPARAM)0L);
1566
1567     int currentLineLineNo = (int)::SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, (WPARAM)0, (LPARAM)0L);
1568
1569     int specifiedLineLineNo = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, (LPARAM)0L);
1570
1571     int linesToScroll = specifiedLineLineNo - currentLineLineNo;
1572
1573     if (linesToScroll != 0)
1574       (void)::SendMessage(hWnd, EM_LINESCROLL, (WPARAM)0, (LPARAM)linesToScroll);
1575 }
1576
1577 long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const
1578 {
1579     return ::SendMessage(GetHwnd(), EM_LINELENGTH, (WPARAM)pos, 0);
1580 }
1581
1582 int wxTextCtrl::GetLineLength(long lineNo) const
1583 {
1584     long pos = XYToPosition(0, lineNo);
1585
1586     return GetLengthOfLineContainingPos(pos);
1587 }
1588
1589 wxString wxTextCtrl::GetLineText(long lineNo) const
1590 {
1591     size_t len = (size_t)GetLineLength(lineNo) + 1;
1592
1593     // there must be at least enough place for the length WORD in the
1594     // buffer
1595     len += sizeof(WORD);
1596
1597     wxString str;
1598     {
1599         wxStringBufferLength tmp(str, len);
1600         wxChar *buf = tmp;
1601
1602         *(WORD *)buf = (WORD)len;
1603         len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf);
1604
1605 #if wxUSE_RICHEDIT
1606         if ( IsRich() )
1607         {
1608             // remove the '\r' returned by the rich edit control, the user code
1609             // should never see it
1610             if ( buf[len - 2] == _T('\r') && buf[len - 1] == _T('\n') )
1611             {
1612                 buf[len - 2] = _T('\n');
1613                 len--;
1614             }
1615         }
1616 #endif // wxUSE_RICHEDIT
1617
1618         // remove the '\n' at the end, if any (this is how this function is
1619         // supposed to work according to the docs)
1620         if ( buf[len - 1] == _T('\n') )
1621         {
1622             len--;
1623         }
1624
1625         buf[len] = 0;
1626         tmp.SetLength(len);
1627     }
1628
1629     return str;
1630 }
1631
1632 void wxTextCtrl::SetMaxLength(unsigned long len)
1633 {
1634 #if wxUSE_RICHEDIT
1635     if ( IsRich() )
1636     {
1637         ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, len ? len : 0x7fffffff);
1638     }
1639     else
1640 #endif // wxUSE_RICHEDIT
1641     {
1642         if ( len >= 0xffff )
1643         {
1644             // this will set it to a platform-dependent maximum (much more
1645             // than 64Kb under NT)
1646             len = 0;
1647         }
1648
1649         ::SendMessage(GetHwnd(), EM_LIMITTEXT, len, 0);
1650     }
1651 }
1652
1653 // ----------------------------------------------------------------------------
1654 // Undo/redo
1655 // ----------------------------------------------------------------------------
1656
1657 void wxTextCtrl::Undo()
1658 {
1659     if (CanUndo())
1660     {
1661         ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1662     }
1663 }
1664
1665 void wxTextCtrl::Redo()
1666 {
1667     if (CanRedo())
1668     {
1669 #if wxUSE_RICHEDIT
1670         if (GetRichVersion() > 1)
1671             ::SendMessage(GetHwnd(), EM_REDO, 0, 0);
1672         else
1673 #endif
1674         // Same as Undo, since Undo undoes the undo, i.e. a redo.
1675         ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1676     }
1677 }
1678
1679 bool wxTextCtrl::CanUndo() const
1680 {
1681     return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1682 }
1683
1684 bool wxTextCtrl::CanRedo() const
1685 {
1686 #if wxUSE_RICHEDIT
1687     if (GetRichVersion() > 1)
1688         return ::SendMessage(GetHwnd(), EM_CANREDO, 0, 0) != 0;
1689     else
1690 #endif
1691     return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1692 }
1693
1694 // ----------------------------------------------------------------------------
1695 // caret handling (Windows only)
1696 // ----------------------------------------------------------------------------
1697
1698 bool wxTextCtrl::ShowNativeCaret(bool show)
1699 {
1700     if ( show != m_isNativeCaretShown )
1701     {
1702         if ( !(show ? ::ShowCaret(GetHwnd()) : ::HideCaret(GetHwnd())) )
1703         {
1704             // not an error, may simply indicate that it's not shown/hidden
1705             // yet (i.e. it had been hidden/showh 2 times before)
1706             return false;
1707         }
1708
1709         m_isNativeCaretShown = show;
1710     }
1711
1712     return true;
1713 }
1714
1715 // ----------------------------------------------------------------------------
1716 // implemenation details
1717 // ----------------------------------------------------------------------------
1718
1719 void wxTextCtrl::Command(wxCommandEvent & event)
1720 {
1721     SetValue(event.GetString());
1722     ProcessCommand (event);
1723 }
1724
1725 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
1726 {
1727     // By default, load the first file into the text window.
1728     if (event.GetNumberOfFiles() > 0)
1729     {
1730         LoadFile(event.GetFiles()[0]);
1731     }
1732 }
1733
1734 // ----------------------------------------------------------------------------
1735 // kbd input processing
1736 // ----------------------------------------------------------------------------
1737
1738 bool wxTextCtrl::MSWShouldPreProcessMessage(WXMSG* pMsg)
1739 {
1740     MSG *msg = (MSG *)pMsg;
1741
1742     // check for our special keys here: if we don't do it and the parent frame
1743     // uses them as accelerators, they wouldn't work at all, so we disable
1744     // usual preprocessing for them
1745     if ( msg->message == WM_KEYDOWN )
1746     {
1747         WORD vkey = (WORD) msg->wParam;
1748         if ( (HIWORD(msg->lParam) & KF_ALTDOWN) == KF_ALTDOWN )
1749         {
1750             if ( vkey == VK_BACK )
1751                 return false;
1752         }
1753         else // no Alt
1754         {
1755             // we want to process some Ctrl-foo and Shift-bar but no key
1756             // combinations without either Ctrl or Shift nor with both of them
1757             // pressed
1758             const int ctrl = wxIsCtrlDown(),
1759                       shift = wxIsShiftDown();
1760             switch ( ctrl + shift )
1761             {
1762                 default:
1763                     wxFAIL_MSG( _T("how many modifiers have we got?") );
1764                     // fall through
1765
1766                 case 0:
1767                 case 2:
1768                     break;
1769
1770                 case 1:
1771                     // either Ctrl or Shift pressed
1772                     if ( ctrl )
1773                     {
1774                         switch ( vkey )
1775                         {
1776                             case 'C':
1777                             case 'V':
1778                             case 'X':
1779                             case VK_INSERT:
1780                             case VK_DELETE:
1781                             case VK_HOME:
1782                             case VK_END:
1783                                 return false;
1784                         }
1785                     }
1786                     else // Shift is pressed
1787                     {
1788                         if ( vkey == VK_INSERT || vkey == VK_DELETE )
1789                             return false;
1790                     }
1791             }
1792         }
1793     }
1794
1795     return wxControl::MSWShouldPreProcessMessage(pMsg);
1796 }
1797
1798 void wxTextCtrl::OnChar(wxKeyEvent& event)
1799 {
1800     switch ( event.GetKeyCode() )
1801     {
1802         case WXK_RETURN:
1803             if ( !HasFlag(wxTE_MULTILINE) )
1804             {
1805                 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1806                 InitCommandEvent(event);
1807                 event.SetString(GetValue());
1808                 if ( GetEventHandler()->ProcessEvent(event) )
1809                     return;
1810             }
1811             //else: multiline controls need Enter for themselves
1812
1813             break;
1814
1815         case WXK_TAB:
1816             // ok, so this is getting absolutely ridiculous but I don't see
1817             // any other way to fix this bug: when a multiline text control is
1818             // inside a wxFrame, we need to generate the navigation event as
1819             // otherwise nothing happens at all, but when the same control is
1820             // created inside a dialog, IsDialogMessage() *does* switch focus
1821             // all by itself and so if we do it here as well, it is advanced
1822             // twice and goes to the next control... to prevent this from
1823             // happening we're doing this ugly check, the logic being that if
1824             // we don't have focus then it had been already changed to the next
1825             // control
1826             //
1827             // the right thing to do would, of course, be to understand what
1828             // the hell is IsDialogMessage() doing but this is beyond my feeble
1829             // forces at the moment unfortunately
1830             if ( !(m_windowStyle & wxTE_PROCESS_TAB))
1831             {
1832                 if ( FindFocus() == this )
1833                 {
1834                     int flags = 0;
1835                     if (!event.ShiftDown())
1836                         flags |= wxNavigationKeyEvent::IsForward ;
1837                     if (event.ControlDown())
1838                         flags |= wxNavigationKeyEvent::WinChange ;
1839                     if (Navigate(flags))
1840                         return;
1841                 }
1842             }
1843             else
1844             {
1845                 // Insert tab since calling the default Windows handler
1846                 // doesn't seem to do it
1847                 WriteText(wxT("\t"));
1848                 return;
1849             }
1850             break;
1851     }
1852
1853     // no, we didn't process it
1854     event.Skip();
1855 }
1856
1857 WXLRESULT wxTextCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
1858 {
1859     WXLRESULT lRc = wxTextCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
1860
1861     if ( nMsg == WM_GETDLGCODE )
1862     {
1863         // we always want the chars and the arrows: the arrows for navigation
1864         // and the chars because we want Ctrl-C to work even in a read only
1865         // control
1866         long lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
1867
1868         if ( IsEditable() )
1869         {
1870             // we may have several different cases:
1871             // 1. normal case: both TAB and ENTER are used for dlg navigation
1872             // 2. ctrl which wants TAB for itself: ENTER is used to pass to the
1873             //    next control in the dialog
1874             // 3. ctrl which wants ENTER for itself: TAB is used for dialog
1875             //    navigation
1876             // 4. ctrl which wants both TAB and ENTER: Ctrl-ENTER is used to go
1877             //    to the next control
1878
1879             // the multiline edit control should always get <Return> for itself
1880             if ( HasFlag(wxTE_PROCESS_ENTER) || HasFlag(wxTE_MULTILINE) )
1881                 lDlgCode |= DLGC_WANTMESSAGE;
1882
1883             if ( HasFlag(wxTE_PROCESS_TAB) )
1884                 lDlgCode |= DLGC_WANTTAB;
1885
1886             lRc |= lDlgCode;
1887         }
1888         else // !editable
1889         {
1890             // NB: use "=", not "|=" as the base class version returns the
1891             //     same flags is this state as usual (i.e. including
1892             //     DLGC_WANTMESSAGE). This is strange (how does it work in the
1893             //     native Win32 apps?) but for now live with it.
1894             lRc = lDlgCode;
1895         }
1896     }
1897
1898     return lRc;
1899 }
1900
1901 // ----------------------------------------------------------------------------
1902 // text control event processing
1903 // ----------------------------------------------------------------------------
1904
1905 bool wxTextCtrl::SendUpdateEvent()
1906 {
1907     switch ( m_updatesCount )
1908     {
1909         case 0:
1910             // remember that we've got an update
1911             m_updatesCount++;
1912             break;
1913
1914         case 1:
1915             // we had already sent one event since the last control modification
1916             return false;
1917
1918         default:
1919             wxFAIL_MSG( _T("unexpected wxTextCtrl::m_updatesCount value") );
1920             // fall through
1921
1922         case -1:
1923             // we hadn't updated the control ourselves, this event comes from
1924             // the user, don't need to ignore it nor update the count
1925             break;
1926     }
1927
1928     wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, GetId());
1929     InitCommandEvent(event);
1930
1931     return ProcessCommand(event);
1932 }
1933
1934 bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
1935 {
1936     switch ( param )
1937     {
1938         case EN_SETFOCUS:
1939         case EN_KILLFOCUS:
1940             {
1941                 wxFocusEvent event(param == EN_KILLFOCUS ? wxEVT_KILL_FOCUS
1942                                                          : wxEVT_SET_FOCUS,
1943                                    m_windowId);
1944                 event.SetEventObject(this);
1945                 GetEventHandler()->ProcessEvent(event);
1946             }
1947             break;
1948
1949         case EN_CHANGE:
1950             SendUpdateEvent();
1951             break;
1952
1953         case EN_MAXTEXT:
1954             // the text size limit has been hit -- try to increase it
1955             if ( !AdjustSpaceLimit() )
1956             {
1957                 wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, m_windowId);
1958                 InitCommandEvent(event);
1959                 event.SetString(GetValue());
1960                 ProcessCommand(event);
1961             }
1962             break;
1963
1964             // the other edit notification messages are not processed
1965         default:
1966             return false;
1967     }
1968
1969     // processed
1970     return true;
1971 }
1972
1973 WXHBRUSH wxTextCtrl::MSWControlColor(WXHDC hDC, WXHWND hWnd)
1974 {
1975     if ( !IsEnabled() && !HasFlag(wxTE_MULTILINE) )
1976         return MSWControlColorDisabled(hDC);
1977
1978     return wxTextCtrlBase::MSWControlColor(hDC, hWnd);
1979 }
1980
1981 bool wxTextCtrl::HasSpaceLimit(unsigned int *len) const
1982 {
1983     // HACK: we try to automatically extend the limit for the amount of text
1984     //       to allow (interactively) entering more than 64Kb of text under
1985     //       Win9x but we shouldn't reset the text limit which was previously
1986     //       set explicitly with SetMaxLength()
1987     //
1988     //       Unfortunately there is no EM_GETLIMITTEXTSETBYUSER and so we don't
1989     //       know the limit we set (if any). We could solve this by storing the
1990     //       limit we set in wxTextCtrl but to save space we prefer to simply
1991     //       test here the actual limit value: we consider that SetMaxLength()
1992     //       can only be called for small values while EN_MAXTEXT is only sent
1993     //       for large values (in practice the default limit seems to be 30000
1994     //       but make it smaller just to be on the safe side)
1995     *len = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
1996     return *len < 10001;
1997
1998 }
1999
2000 bool wxTextCtrl::AdjustSpaceLimit()
2001 {
2002     unsigned int limit;
2003     if ( HasSpaceLimit(&limit) )
2004         return false;
2005
2006     unsigned int len = ::GetWindowTextLength(GetHwnd());
2007     if ( len >= limit )
2008     {
2009         // increment in 32Kb chunks
2010         SetMaxLength(len + 0x8000);
2011     }
2012
2013     // we changed the limit
2014     return true;
2015 }
2016
2017 bool wxTextCtrl::AcceptsFocus() const
2018 {
2019     // we don't want focus if we can't be edited unless we're a multiline
2020     // control because then it might be still nice to get focus from keyboard
2021     // to be able to scroll it without mouse
2022     return (IsEditable() || IsMultiLine()) && wxControl::AcceptsFocus();
2023 }
2024
2025 wxSize wxTextCtrl::DoGetBestSize() const
2026 {
2027     int cx, cy;
2028     wxGetCharSize(GetHWND(), &cx, &cy, GetFont());
2029
2030     int wText = DEFAULT_ITEM_WIDTH;
2031
2032     int hText = cy;
2033     if ( m_windowStyle & wxTE_MULTILINE )
2034     {
2035         hText *= wxMax(wxMin(GetNumberOfLines(), 10), 2);
2036     }
2037     //else: for single line control everything is ok
2038
2039     // we have to add the adjustments for the control height only once, not
2040     // once per line, so do it after multiplication above
2041     hText += EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy) - cy;
2042
2043     return wxSize(wText, hText);
2044 }
2045
2046 // ----------------------------------------------------------------------------
2047 // standard handlers for standard edit menu events
2048 // ----------------------------------------------------------------------------
2049
2050 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
2051 {
2052     Cut();
2053 }
2054
2055 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
2056 {
2057     Copy();
2058 }
2059
2060 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
2061 {
2062     Paste();
2063 }
2064
2065 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
2066 {
2067     Undo();
2068 }
2069
2070 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
2071 {
2072     Redo();
2073 }
2074
2075 void wxTextCtrl::OnDelete(wxCommandEvent& WXUNUSED(event))
2076 {
2077     long from, to;
2078     GetSelection(& from, & to);
2079     if (from != -1 && to != -1)
2080         Remove(from, to);
2081 }
2082
2083 void wxTextCtrl::OnSelectAll(wxCommandEvent& WXUNUSED(event))
2084 {
2085     SetSelection(-1, -1);
2086 }
2087
2088 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
2089 {
2090     event.Enable( CanCut() );
2091 }
2092
2093 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
2094 {
2095     event.Enable( CanCopy() );
2096 }
2097
2098 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
2099 {
2100     event.Enable( CanPaste() );
2101 }
2102
2103 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
2104 {
2105     event.Enable( CanUndo() );
2106 }
2107
2108 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
2109 {
2110     event.Enable( CanRedo() );
2111 }
2112
2113 void wxTextCtrl::OnUpdateDelete(wxUpdateUIEvent& event)
2114 {
2115     long from, to;
2116     GetSelection(& from, & to);
2117     event.Enable(from != -1 && to != -1 && from != to && IsEditable()) ;
2118 }
2119
2120 void wxTextCtrl::OnUpdateSelectAll(wxUpdateUIEvent& event)
2121 {
2122     event.Enable(GetLastPosition() > 0);
2123 }
2124
2125 void wxTextCtrl::OnContextMenu(wxContextMenuEvent& event)
2126 {
2127 #if wxUSE_RICHEDIT
2128     if (IsRich())
2129     {
2130         if (!m_privateContextMenu)
2131         {
2132             m_privateContextMenu = new wxMenu;
2133             m_privateContextMenu->Append(wxID_UNDO, _("&Undo"));
2134             m_privateContextMenu->Append(wxID_REDO, _("&Redo"));
2135             m_privateContextMenu->AppendSeparator();
2136             m_privateContextMenu->Append(wxID_CUT, _("Cu&t"));
2137             m_privateContextMenu->Append(wxID_COPY, _("&Copy"));
2138             m_privateContextMenu->Append(wxID_PASTE, _("&Paste"));
2139             m_privateContextMenu->Append(wxID_CLEAR, _("&Delete"));
2140             m_privateContextMenu->AppendSeparator();
2141             m_privateContextMenu->Append(wxID_SELECTALL, _("Select &All"));
2142         }
2143         PopupMenu(m_privateContextMenu);
2144         return;
2145     }
2146     else
2147 #endif
2148     event.Skip();
2149 }
2150
2151 void wxTextCtrl::OnSetFocus(wxFocusEvent& WXUNUSED(event))
2152 {
2153     // be sure the caret remains invisible if the user had hidden it
2154     if ( !m_isNativeCaretShown )
2155     {
2156         ::HideCaret(GetHwnd());
2157     }
2158 }
2159
2160 // ----------------------------------------------------------------------------
2161 // Default colors for MSW text control
2162 //
2163 // Set default background color to the native white instead of
2164 // the default wxSYS_COLOUR_BTNFACE (is triggered with wxNullColour).
2165 // ----------------------------------------------------------------------------
2166
2167 wxVisualAttributes wxTextCtrl::GetDefaultAttributes() const
2168 {
2169     wxVisualAttributes attrs;
2170     attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
2171     attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
2172     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW); //white
2173
2174     return attrs;
2175 }
2176
2177 // the rest of the file only deals with the rich edit controls
2178 #if wxUSE_RICHEDIT
2179
2180 // ----------------------------------------------------------------------------
2181 // EN_LINK processing
2182 // ----------------------------------------------------------------------------
2183
2184 bool wxTextCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
2185 {
2186     NMHDR *hdr = (NMHDR* )lParam;
2187     switch ( hdr->code )
2188     {
2189        case EN_MSGFILTER:
2190             {
2191                 const MSGFILTER *msgf = (MSGFILTER *)lParam;
2192                 UINT msg = msgf->msg;
2193
2194                 // this is a bit crazy but richedit 1.0 sends us all mouse
2195                 // events _except_ WM_LBUTTONUP (don't ask me why) so we have
2196                 // generate the wxWin events for this message manually
2197                 //
2198                 // NB: in fact, this is still not totally correct as it does
2199                 //     send us WM_LBUTTONUP if the selection was cleared by the
2200                 //     last click -- so currently we get 2 events in this case,
2201                 //     but as I don't see any obvious way to check for this I
2202                 //     leave this code in place because it's still better than
2203                 //     not getting left up events at all
2204                 if ( msg == WM_LBUTTONUP )
2205                 {
2206                     WXUINT flags = msgf->wParam;
2207                     int x = GET_X_LPARAM(msgf->lParam),
2208                         y = GET_Y_LPARAM(msgf->lParam);
2209
2210                     HandleMouseEvent(msg, x, y, flags);
2211                 }
2212             }
2213
2214             // return true to process the event (and false to ignore it)
2215             return true;
2216
2217         case EN_LINK:
2218             {
2219                 const ENLINK *enlink = (ENLINK *)hdr;
2220
2221                 switch ( enlink->msg )
2222                 {
2223                     case WM_SETCURSOR:
2224                         // ok, so it is hardcoded - do we really nee to
2225                         // customize it?
2226                         {
2227                             wxCursor cur(wxCURSOR_HAND);
2228                             ::SetCursor(GetHcursorOf(cur));
2229                             *result = TRUE;
2230                             break;
2231                         }
2232
2233                     case WM_MOUSEMOVE:
2234                     case WM_LBUTTONDOWN:
2235                     case WM_LBUTTONUP:
2236                     case WM_LBUTTONDBLCLK:
2237                     case WM_RBUTTONDOWN:
2238                     case WM_RBUTTONUP:
2239                     case WM_RBUTTONDBLCLK:
2240                         // send a mouse event
2241                         {
2242                             static const wxEventType eventsMouse[] =
2243                             {
2244                                 wxEVT_MOTION,
2245                                 wxEVT_LEFT_DOWN,
2246                                 wxEVT_LEFT_UP,
2247                                 wxEVT_LEFT_DCLICK,
2248                                 wxEVT_RIGHT_DOWN,
2249                                 wxEVT_RIGHT_UP,
2250                                 wxEVT_RIGHT_DCLICK,
2251                             };
2252
2253                             // the event ids are consecutive
2254                             wxMouseEvent
2255                                 evtMouse(eventsMouse[enlink->msg - WM_MOUSEMOVE]);
2256
2257                             InitMouseEvent(evtMouse,
2258                                            GET_X_LPARAM(enlink->lParam),
2259                                            GET_Y_LPARAM(enlink->lParam),
2260                                            enlink->wParam);
2261
2262                             wxTextUrlEvent event(m_windowId, evtMouse,
2263                                                  enlink->chrg.cpMin,
2264                                                  enlink->chrg.cpMax);
2265
2266                             InitCommandEvent(event);
2267
2268                             *result = ProcessCommand(event);
2269                         }
2270                         break;
2271                 }
2272             }
2273             return true;
2274     }
2275
2276     // not processed, leave it to the base class
2277     return wxTextCtrlBase::MSWOnNotify(idCtrl, lParam, result);
2278 }
2279
2280 // ----------------------------------------------------------------------------
2281 // colour setting for the rich edit controls
2282 // ----------------------------------------------------------------------------
2283
2284 bool wxTextCtrl::SetBackgroundColour(const wxColour& colour)
2285 {
2286     if ( !wxTextCtrlBase::SetBackgroundColour(colour) )
2287     {
2288         // colour didn't really change
2289         return false;
2290     }
2291
2292     if ( IsRich() )
2293     {
2294         // rich edit doesn't use WM_CTLCOLOR, hence we need to send
2295         // EM_SETBKGNDCOLOR additionally
2296         ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour));
2297     }
2298
2299     return true;
2300 }
2301
2302 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
2303 {
2304     if ( !wxTextCtrlBase::SetForegroundColour(colour) )
2305     {
2306         // colour didn't really change
2307         return false;
2308     }
2309
2310     if ( IsRich() )
2311     {
2312         // change the colour of everything
2313         CHARFORMAT cf;
2314         wxZeroMemory(cf);
2315         cf.cbSize = sizeof(cf);
2316         cf.dwMask = CFM_COLOR;
2317         cf.crTextColor = wxColourToRGB(colour);
2318         ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf);
2319     }
2320
2321     return true;
2322 }
2323
2324 // ----------------------------------------------------------------------------
2325 // styling support for rich edit controls
2326 // ----------------------------------------------------------------------------
2327
2328 #if wxUSE_RICHEDIT
2329
2330 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
2331 {
2332     if ( !IsRich() )
2333     {
2334         // can't do it with normal text control
2335         return false;
2336     }
2337
2338     // the richedit 1.0 doesn't handle setting background colour, so don't
2339     // even try to do anything if it's the only thing we want to change
2340     if ( m_verRichEdit == 1 && !style.HasFont() && !style.HasTextColour() &&
2341         !style.HasLeftIndent() && !style.HasRightIndent() && !style.HasAlignment() &&
2342         !style.HasTabs() )
2343     {
2344         // nothing to do: return true if there was really nothing to do and
2345         // false if we failed to set bg colour
2346         return !style.HasBackgroundColour();
2347     }
2348
2349     // order the range if needed
2350     if ( start > end )
2351     {
2352         long tmp = start;
2353         start = end;
2354         end = tmp;
2355     }
2356
2357     // we can only change the format of the selection, so select the range we
2358     // want and restore the old selection later
2359     long startOld, endOld;
2360     GetSelection(&startOld, &endOld);
2361
2362     // but do we really have to change the selection?
2363     bool changeSel = start != startOld || end != endOld;
2364
2365     if ( changeSel )
2366     {
2367         DoSetSelection(start, end, false /* don't scroll caret into view */);
2368     }
2369
2370     // initialize CHARFORMAT struct
2371 #if wxUSE_RICHEDIT2
2372     CHARFORMAT2 cf;
2373 #else
2374     CHARFORMAT cf;
2375 #endif
2376
2377     wxZeroMemory(cf);
2378
2379     // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2380     // CHARFORMAT in that case
2381 #if wxUSE_RICHEDIT2
2382     if ( m_verRichEdit == 1 )
2383     {
2384         // this is the only thing the control is going to grok
2385         cf.cbSize = sizeof(CHARFORMAT);
2386     }
2387     else
2388 #endif
2389     {
2390         // CHARFORMAT or CHARFORMAT2
2391         cf.cbSize = sizeof(cf);
2392     }
2393
2394     if ( style.HasFont() )
2395     {
2396         // VZ: CFM_CHARSET doesn't seem to do anything at all in RichEdit 2.0
2397         //     but using it doesn't seem to hurt neither so leaving it for now
2398
2399         cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET |
2400                      CFM_ITALIC | CFM_BOLD | CFM_UNDERLINE;
2401
2402         // fill in data from LOGFONT but recalculate lfHeight because we need
2403         // the real height in twips and not the negative number which
2404         // wxFillLogFont() returns (this is correct in general and works with
2405         // the Windows font mapper, but not here)
2406         LOGFONT lf;
2407         wxFillLogFont(&lf, &style.GetFont());
2408         cf.yHeight = 20*style.GetFont().GetPointSize(); // 1 pt = 20 twips
2409         cf.bCharSet = lf.lfCharSet;
2410         cf.bPitchAndFamily = lf.lfPitchAndFamily;
2411         wxStrncpy( cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName) );
2412
2413         // also deal with underline/italic/bold attributes: note that we must
2414         // always set CFM_ITALIC &c bits in dwMask, even if we don't set the
2415         // style to allow clearing it
2416         if ( lf.lfItalic )
2417         {
2418             cf.dwEffects |= CFE_ITALIC;
2419         }
2420
2421         if ( lf.lfWeight == FW_BOLD )
2422         {
2423             cf.dwEffects |= CFE_BOLD;
2424         }
2425
2426         if ( lf.lfUnderline )
2427         {
2428             cf.dwEffects |= CFE_UNDERLINE;
2429         }
2430
2431         // strikeout fonts are not supported by wxWidgets
2432     }
2433
2434     if ( style.HasTextColour() )
2435     {
2436         cf.dwMask |= CFM_COLOR;
2437         cf.crTextColor = wxColourToRGB(style.GetTextColour());
2438     }
2439
2440 #if wxUSE_RICHEDIT2
2441     if ( m_verRichEdit != 1 && style.HasBackgroundColour() )
2442     {
2443         cf.dwMask |= CFM_BACKCOLOR;
2444         cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
2445     }
2446 #endif // wxUSE_RICHEDIT2
2447
2448     // do format the selection
2449     bool ok = ::SendMessage(GetHwnd(), EM_SETCHARFORMAT,
2450                             SCF_SELECTION, (LPARAM)&cf) != 0;
2451     if ( !ok )
2452     {
2453         wxLogDebug(_T("SendMessage(EM_SETCHARFORMAT, SCF_SELECTION) failed"));
2454     }
2455
2456     // now do the paragraph formatting
2457     PARAFORMAT2 pf;
2458     wxZeroMemory(pf);
2459     // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2460     // PARAFORMAT in that case
2461 #if wxUSE_RICHEDIT2
2462     if ( m_verRichEdit == 1 )
2463     {
2464         // this is the only thing the control is going to grok
2465         pf.cbSize = sizeof(PARAFORMAT);
2466     }
2467     else
2468 #endif
2469     {
2470         // PARAFORMAT or PARAFORMAT2
2471         pf.cbSize = sizeof(pf);
2472     }
2473
2474     if (style.HasAlignment())
2475     {
2476         pf.dwMask |= PFM_ALIGNMENT;
2477         if (style.GetAlignment() == wxTEXT_ALIGNMENT_RIGHT)
2478             pf.wAlignment = PFA_RIGHT;
2479         else if (style.GetAlignment() == wxTEXT_ALIGNMENT_CENTRE)
2480             pf.wAlignment = PFA_CENTER;
2481         else if (style.GetAlignment() == wxTEXT_ALIGNMENT_JUSTIFIED)
2482             pf.wAlignment = PFA_JUSTIFY;
2483         else
2484             pf.wAlignment = PFA_LEFT;
2485     }
2486
2487     if (style.HasLeftIndent())
2488     {
2489         pf.dwMask |= PFM_STARTINDENT | PFM_OFFSET;
2490
2491         // Convert from 1/10 mm to TWIPS
2492         pf.dxStartIndent = (int) (((double) style.GetLeftIndent()) * mm2twips / 10.0) ;
2493         pf.dxOffset = (int) (((double) style.GetLeftSubIndent()) * mm2twips / 10.0) ;
2494     }
2495
2496     if (style.HasRightIndent())
2497     {
2498         pf.dwMask |= PFM_RIGHTINDENT;
2499
2500         // Convert from 1/10 mm to TWIPS
2501         pf.dxRightIndent = (int) (((double) style.GetRightIndent()) * mm2twips / 10.0) ;
2502     }
2503
2504     if (style.HasTabs())
2505     {
2506         pf.dwMask |= PFM_TABSTOPS;
2507
2508         const wxArrayInt& tabs = style.GetTabs();
2509
2510         pf.cTabCount = (SHORT)wxMin(tabs.GetCount(), MAX_TAB_STOPS);
2511         size_t i;
2512         for (i = 0; i < (size_t) pf.cTabCount; i++)
2513         {
2514             // Convert from 1/10 mm to TWIPS
2515             pf.rgxTabs[i] = (int) (((double) tabs[i]) * mm2twips / 10.0) ;
2516         }
2517     }
2518
2519     if (pf.dwMask != 0)
2520     {
2521         // do format the selection
2522         bool ok = ::SendMessage(GetHwnd(), EM_SETPARAFORMAT,
2523             0, (LPARAM) &pf) != 0;
2524         if ( !ok )
2525         {
2526             wxLogDebug(_T("SendMessage(EM_SETPARAFORMAT, 0) failed"));
2527         }
2528     }
2529
2530     if ( changeSel )
2531     {
2532         // restore the original selection
2533         DoSetSelection(startOld, endOld, false);
2534     }
2535
2536     return ok;
2537 }
2538
2539 bool wxTextCtrl::SetDefaultStyle(const wxTextAttr& style)
2540 {
2541     if ( !wxTextCtrlBase::SetDefaultStyle(style) )
2542         return false;
2543
2544     if ( IsEditable() )
2545     {
2546         // we have to do this or the style wouldn't apply for the text typed by
2547         // the user
2548         wxTextPos posLast = GetLastPosition();
2549         SetStyle(posLast, posLast, m_defaultStyle);
2550     }
2551
2552     return true;
2553 }
2554
2555 bool wxTextCtrl::GetStyle(long position, wxTextAttr& style)
2556 {
2557     if ( !IsRich() )
2558     {
2559         // can't do it with normal text control
2560         return false;
2561     }
2562
2563     // initialize CHARFORMAT struct
2564 #if wxUSE_RICHEDIT2
2565     CHARFORMAT2 cf;
2566 #else
2567     CHARFORMAT cf;
2568 #endif
2569
2570     wxZeroMemory(cf);
2571
2572     // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2573     // CHARFORMAT in that case
2574 #if wxUSE_RICHEDIT2
2575     if ( m_verRichEdit == 1 )
2576     {
2577         // this is the only thing the control is going to grok
2578         cf.cbSize = sizeof(CHARFORMAT);
2579     }
2580     else
2581 #endif
2582     {
2583         // CHARFORMAT or CHARFORMAT2
2584         cf.cbSize = sizeof(cf);
2585     }
2586     // we can only change the format of the selection, so select the range we
2587     // want and restore the old selection later
2588     long startOld, endOld;
2589     GetSelection(&startOld, &endOld);
2590
2591     // but do we really have to change the selection?
2592     bool changeSel = position != startOld || position != endOld;
2593
2594     if ( changeSel )
2595     {
2596         DoSetSelection(position, position+1, false /* don't scroll caret into view */);
2597     }
2598
2599     // get the selection formatting
2600     (void) ::SendMessage(GetHwnd(), EM_GETCHARFORMAT,
2601                             SCF_SELECTION, (LPARAM)&cf) ;
2602
2603
2604     LOGFONT lf;
2605     lf.lfHeight = cf.yHeight;
2606     lf.lfWidth = 0;
2607     lf.lfCharSet = ANSI_CHARSET; // FIXME: how to get correct charset?
2608     lf.lfClipPrecision = 0;
2609     lf.lfEscapement = 0;
2610     wxStrcpy(lf.lfFaceName, cf.szFaceName);
2611
2612     //NOTE:  we _MUST_ set each of these values to _something_ since we
2613     //do not call wxZeroMemory on the LOGFONT lf
2614     if (cf.dwEffects & CFE_ITALIC)
2615         lf.lfItalic = TRUE;
2616     else
2617         lf.lfItalic = FALSE;
2618
2619     lf.lfOrientation = 0;
2620     lf.lfPitchAndFamily = cf.bPitchAndFamily;
2621     lf.lfQuality = 0;
2622
2623     if (cf.dwEffects & CFE_STRIKEOUT)
2624         lf.lfStrikeOut = TRUE;
2625     else
2626         lf.lfStrikeOut = FALSE;
2627
2628     if (cf.dwEffects & CFE_UNDERLINE)
2629         lf.lfUnderline = TRUE;
2630     else
2631         lf.lfUnderline = FALSE;
2632
2633     if (cf.dwEffects & CFE_BOLD)
2634         lf.lfWeight = FW_BOLD;
2635     else
2636         lf.lfWeight = FW_NORMAL;
2637
2638     wxFont font = wxCreateFontFromLogFont(& lf);
2639     if (font.Ok())
2640     {
2641         style.SetFont(font);
2642     }
2643     style.SetTextColour(wxColour(cf.crTextColor));
2644
2645 #if wxUSE_RICHEDIT2
2646     if ( m_verRichEdit != 1 )
2647     {
2648         // cf.dwMask |= CFM_BACKCOLOR;
2649         style.SetBackgroundColour(wxColour(cf.crBackColor));
2650     }
2651 #endif // wxUSE_RICHEDIT2
2652
2653     // now get the paragraph formatting
2654     PARAFORMAT2 pf;
2655     wxZeroMemory(pf);
2656     // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2657     // PARAFORMAT in that case
2658 #if wxUSE_RICHEDIT2
2659     if ( m_verRichEdit == 1 )
2660     {
2661         // this is the only thing the control is going to grok
2662         pf.cbSize = sizeof(PARAFORMAT);
2663     }
2664     else
2665 #endif
2666     {
2667         // PARAFORMAT or PARAFORMAT2
2668         pf.cbSize = sizeof(pf);
2669     }
2670
2671     // do format the selection
2672     (void) ::SendMessage(GetHwnd(), EM_GETPARAFORMAT, 0, (LPARAM) &pf) ;
2673
2674     style.SetLeftIndent( (int) ((double) pf.dxStartIndent * twips2mm * 10.0), (int) ((double) pf.dxOffset * twips2mm * 10.0) );
2675     style.SetRightIndent( (int) ((double) pf.dxRightIndent * twips2mm * 10.0) );
2676
2677     if (pf.wAlignment == PFA_CENTER)
2678         style.SetAlignment(wxTEXT_ALIGNMENT_CENTRE);
2679     else if (pf.wAlignment == PFA_RIGHT)
2680         style.SetAlignment(wxTEXT_ALIGNMENT_RIGHT);
2681     else if (pf.wAlignment == PFA_JUSTIFY)
2682         style.SetAlignment(wxTEXT_ALIGNMENT_JUSTIFIED);
2683     else
2684         style.SetAlignment(wxTEXT_ALIGNMENT_LEFT);
2685
2686     wxArrayInt tabStops;
2687     size_t i;
2688     for (i = 0; i < (size_t) pf.cTabCount; i++)
2689     {
2690         tabStops.Add( (int) ((double) (pf.rgxTabs[i] & 0xFFFF) * twips2mm * 10.0) );
2691     }
2692
2693     if ( changeSel )
2694     {
2695         // restore the original selection
2696         DoSetSelection(startOld, endOld, false);
2697     }
2698
2699     return true;
2700 }
2701
2702 #endif
2703
2704 // ----------------------------------------------------------------------------
2705 // wxRichEditModule
2706 // ----------------------------------------------------------------------------
2707
2708 static const HINSTANCE INVALID_HINSTANCE = (HINSTANCE)-1;
2709
2710 bool wxRichEditModule::OnInit()
2711 {
2712     // don't do anything - we will load it when needed
2713     return true;
2714 }
2715
2716 void wxRichEditModule::OnExit()
2717 {
2718     for ( size_t i = 0; i < WXSIZEOF(ms_hRichEdit); i++ )
2719     {
2720         if ( ms_hRichEdit[i] && ms_hRichEdit[i] != INVALID_HINSTANCE )
2721         {
2722             ::FreeLibrary(ms_hRichEdit[i]);
2723             ms_hRichEdit[i] = NULL;
2724         }
2725     }
2726 #if wxUSE_INKEDIT
2727     if (ms_inkEditLib.IsLoaded())
2728         ms_inkEditLib.Unload();
2729 #endif
2730 }
2731
2732 /* static */
2733 bool wxRichEditModule::Load(Version version)
2734 {
2735     if ( ms_hRichEdit[version] == INVALID_HINSTANCE )
2736     {
2737         // we had already tried to load it and failed
2738         return false;
2739     }
2740
2741     if ( ms_hRichEdit[version] )
2742     {
2743         // we've already got this one
2744         return true;
2745     }
2746
2747     static const wxChar *dllnames[] =
2748     {
2749         _T("riched32"),
2750         _T("riched20"),
2751         _T("msftedit"),
2752     };
2753
2754     wxCOMPILE_TIME_ASSERT( WXSIZEOF(dllnames) == Version_Max,
2755                             RichEditDllNamesVersionsMismatch );
2756
2757     ms_hRichEdit[version] = ::LoadLibrary(dllnames[version]);
2758
2759     if ( !ms_hRichEdit[version] )
2760     {
2761         ms_hRichEdit[version] = INVALID_HINSTANCE;
2762
2763         return false;
2764     }
2765
2766     return true;
2767 }
2768
2769 #if wxUSE_INKEDIT
2770 // load the InkEdit library
2771 bool wxRichEditModule::LoadInkEdit()
2772 {
2773     static wxDynamicLibrary ms_inkEditLib;
2774     static bool             ms_inkEditLibLoadAttemped;
2775     if (ms_inkEditLibLoadAttemped)
2776         ms_inkEditLib.IsLoaded();
2777
2778     ms_inkEditLibLoadAttemped = true;
2779
2780     wxLogNull logNull;
2781     return ms_inkEditLib.Load(wxT("inked"));
2782 }
2783 #endif
2784
2785
2786 #endif // wxUSE_RICHEDIT
2787
2788 #endif // wxUSE_TEXTCTRL && !(__SMARTPHONE__ && __WXWINCE__)