src/msw/textctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/msw/textctrl.cpp
   3 // Purpose:     wxTextCtrl
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #if wxUSE_TEXTCTRL && !(defined(__SMARTPHONE__) && defined(__WXWINCE__))
  28
  29 #ifndef WX_PRECOMP
  30     #include "wx/textctrl.h"
  31     #include "wx/settings.h"
  32     #include "wx/brush.h"
  33     #include "wx/utils.h"
  34     #include "wx/intl.h"
  35     #include "wx/log.h"
  36     #include "wx/app.h"
  37     #include "wx/menu.h"
  38     #include "wx/math.h"
  39     #include "wx/module.h"
  40     #include "wx/wxcrtvararg.h"
  41 #endif
  42
  43 #include "wx/sysopt.h"
  44
  45 #if wxUSE_CLIPBOARD
  46     #include "wx/clipbrd.h"
  47 #endif
  48
  49 #include "wx/textfile.h"
  50
  51 #include <windowsx.h>
  52
  53 #include "wx/msw/private.h"
  54 #include "wx/msw/winundef.h"
  55 #include "wx/msw/mslu.h"
  56
  57 #include <string.h>
  58 #include <stdlib.h>
  59
  60 #ifndef __WXWINCE__
  61 #include <sys/types.h>
  62 #endif
  63
  64 #if wxUSE_RICHEDIT
  65
  66 #if wxUSE_INKEDIT
  67 #include "wx/dynlib.h"
  68 #endif
  69
  70 // old mingw32 has richedit stuff directly in windows.h and doesn't have
  71 // richedit.h at all
  72 #if !defined(__GNUWIN32_OLD__) || defined(__CYGWIN10__)
  73     #include <richedit.h>
  74 #endif
  75
  76 #endif // wxUSE_RICHEDIT
  77
  78 #include "wx/msw/missing.h"
  79
  80 #if wxUSE_DRAG_AND_DROP && wxUSE_RICHEDIT
  81
  82 // dummy value used for m_dropTarget, different from any valid pointer value
  83 // (which are all even under Windows) and NULL
  84 static wxDropTarget *
  85     wxRICHTEXT_DEFAULT_DROPTARGET = wx_reinterpret_cast(wxDropTarget *, 1);
  86
  87 #endif // wxUSE_DRAG_AND_DROP && wxUSE_RICHEDIT
  88
  89 // ----------------------------------------------------------------------------
  90 // private classes
  91 // ----------------------------------------------------------------------------
  92
  93 #if wxUSE_RICHEDIT
  94
  95 // this module initializes RichEdit DLL(s) if needed
  96 class wxRichEditModule : public wxModule
  97 {
  98 public:
  99     enum Version
 100     {
 101         Version_1,          // riched32.dll
 102         Version_2or3,       // both use riched20.dll
 103         Version_41,         // msftedit.dll (XP SP1 and Windows 2003)
 104         Version_Max
 105     };
 106
 107     virtual bool OnInit();
 108     virtual void OnExit();
 109
 110     // load the richedit DLL for the specified version of rich edit
 111     static bool Load(Version version);
 112
 113 #if wxUSE_INKEDIT
 114     // load the InkEdit library
 115     static bool LoadInkEdit();
 116 #endif
 117
 118 private:
 119     // the handles to richedit 1.0 and 2.0 (or 3.0) DLLs
 120     static HINSTANCE ms_hRichEdit[Version_Max];
 121
 122 #if wxUSE_INKEDIT
 123     static wxDynamicLibrary ms_inkEditLib;
 124     static bool             ms_inkEditLibLoadAttemped;
 125 #endif
 126
 127     DECLARE_DYNAMIC_CLASS(wxRichEditModule)
 128 };
 129
 130 HINSTANCE wxRichEditModule::ms_hRichEdit[Version_Max] = { NULL, NULL, NULL };
 131
 132 #if wxUSE_INKEDIT
 133 wxDynamicLibrary wxRichEditModule::ms_inkEditLib;
 134 bool             wxRichEditModule::ms_inkEditLibLoadAttemped = false;
 135 #endif
 136
 137 IMPLEMENT_DYNAMIC_CLASS(wxRichEditModule, wxModule)
 138
 139 #endif // wxUSE_RICHEDIT
 140
 141 // a small class used to set m_updatesCount to 0 (to filter duplicate events if
 142 // necessary) and to reset it back to -1 afterwards
 143 class UpdatesCountFilter
 144 {
 145 public:
 146     UpdatesCountFilter(int& count)
 147         : m_count(count)
 148     {
 149         wxASSERT_MSG( m_count == -1 || m_count == -2,
 150                       _T("wrong initial m_updatesCount value") );
 151
 152         if (m_count != -2)
 153             m_count = 0;
 154         //else: we don't want to count how many update events we get as we're going
 155         //      to ignore all of them
 156     }
 157
 158     ~UpdatesCountFilter()
 159     {
 160         m_count = -1;
 161     }
 162
 163     // return true if an event has been received
 164     bool GotUpdate() const
 165     {
 166         return m_count == 1;
 167     }
 168
 169 private:
 170     int& m_count;
 171
 172     DECLARE_NO_COPY_CLASS(UpdatesCountFilter)
 173 };
 174
 175 // ----------------------------------------------------------------------------
 176 // event tables and other macros
 177 // ----------------------------------------------------------------------------
 178
 179 #if wxUSE_EXTENDED_RTTI
 180 WX_DEFINE_FLAGS( wxTextCtrlStyle )
 181
 182 wxBEGIN_FLAGS( wxTextCtrlStyle )
 183     // new style border flags, we put them first to
 184     // use them for streaming out
 185     wxFLAGS_MEMBER(wxBORDER_SIMPLE)
 186     wxFLAGS_MEMBER(wxBORDER_SUNKEN)
 187     wxFLAGS_MEMBER(wxBORDER_DOUBLE)
 188     wxFLAGS_MEMBER(wxBORDER_RAISED)
 189     wxFLAGS_MEMBER(wxBORDER_STATIC)
 190     wxFLAGS_MEMBER(wxBORDER_NONE)
 191
 192     // old style border flags
 193     wxFLAGS_MEMBER(wxSIMPLE_BORDER)
 194     wxFLAGS_MEMBER(wxSUNKEN_BORDER)
 195     wxFLAGS_MEMBER(wxDOUBLE_BORDER)
 196     wxFLAGS_MEMBER(wxRAISED_BORDER)
 197     wxFLAGS_MEMBER(wxSTATIC_BORDER)
 198     wxFLAGS_MEMBER(wxBORDER)
 199
 200     // standard window styles
 201     wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
 202     wxFLAGS_MEMBER(wxCLIP_CHILDREN)
 203     wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
 204     wxFLAGS_MEMBER(wxWANTS_CHARS)
 205     wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
 206     wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
 207     wxFLAGS_MEMBER(wxVSCROLL)
 208     wxFLAGS_MEMBER(wxHSCROLL)
 209
 210     wxFLAGS_MEMBER(wxTE_PROCESS_ENTER)
 211     wxFLAGS_MEMBER(wxTE_PROCESS_TAB)
 212     wxFLAGS_MEMBER(wxTE_MULTILINE)
 213     wxFLAGS_MEMBER(wxTE_PASSWORD)
 214     wxFLAGS_MEMBER(wxTE_READONLY)
 215     wxFLAGS_MEMBER(wxHSCROLL)
 216     wxFLAGS_MEMBER(wxTE_RICH)
 217     wxFLAGS_MEMBER(wxTE_RICH2)
 218     wxFLAGS_MEMBER(wxTE_AUTO_URL)
 219     wxFLAGS_MEMBER(wxTE_NOHIDESEL)
 220     wxFLAGS_MEMBER(wxTE_LEFT)
 221     wxFLAGS_MEMBER(wxTE_CENTRE)
 222     wxFLAGS_MEMBER(wxTE_RIGHT)
 223     wxFLAGS_MEMBER(wxTE_DONTWRAP)
 224     wxFLAGS_MEMBER(wxTE_CHARWRAP)
 225     wxFLAGS_MEMBER(wxTE_WORDWRAP)
 226
 227 wxEND_FLAGS( wxTextCtrlStyle )
 228
 229 IMPLEMENT_DYNAMIC_CLASS_XTI(wxTextCtrl, wxControl,"wx/textctrl.h")
 230
 231 wxBEGIN_PROPERTIES_TABLE(wxTextCtrl)
 232     wxEVENT_PROPERTY( TextUpdated , wxEVT_COMMAND_TEXT_UPDATED , wxCommandEvent )
 233     wxEVENT_PROPERTY( TextEnter , wxEVT_COMMAND_TEXT_ENTER , wxCommandEvent )
 234
 235     wxPROPERTY( Font , wxFont , SetFont , GetFont  , EMPTY_MACROVALUE, 0 /*flags*/ , wxT("Helpstring") , wxT("group") )
 236     wxPROPERTY( Value , wxString , SetValue, GetValue, wxString() , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
 237     wxPROPERTY_FLAGS( WindowStyle , wxTextCtrlStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
 238 wxEND_PROPERTIES_TABLE()
 239
 240 wxBEGIN_HANDLERS_TABLE(wxTextCtrl)
 241 wxEND_HANDLERS_TABLE()
 242
 243 wxCONSTRUCTOR_6( wxTextCtrl , wxWindow* , Parent , wxWindowID , Id , wxString , Value , wxPoint , Position , wxSize , Size , long , WindowStyle)
 244 #else
 245 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxTextCtrlBase)
 246 #endif
 247
 248
 249 BEGIN_EVENT_TABLE(wxTextCtrl, wxTextCtrlBase)
 250     EVT_CHAR(wxTextCtrl::OnChar)
 251     EVT_DROP_FILES(wxTextCtrl::OnDropFiles)
 252
 253 #if wxUSE_RICHEDIT
 254     EVT_CONTEXT_MENU(wxTextCtrl::OnContextMenu)
 255 #endif
 256
 257     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 258     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 259     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 260     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 261     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 262     EVT_MENU(wxID_CLEAR, wxTextCtrl::OnDelete)
 263     EVT_MENU(wxID_SELECTALL, wxTextCtrl::OnSelectAll)
 264
 265     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 266     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 267     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 268     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 269     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 270     EVT_UPDATE_UI(wxID_CLEAR, wxTextCtrl::OnUpdateDelete)
 271     EVT_UPDATE_UI(wxID_SELECTALL, wxTextCtrl::OnUpdateSelectAll)
 272
 273     EVT_SET_FOCUS(wxTextCtrl::OnSetFocus)
 274 END_EVENT_TABLE()
 275
 276 // ============================================================================
 277 // implementation
 278 // ============================================================================
 279
 280 // ----------------------------------------------------------------------------
 281 // creation
 282 // ----------------------------------------------------------------------------
 283
 284 void wxTextCtrl::Init()
 285 {
 286 #if wxUSE_RICHEDIT
 287     m_verRichEdit = 0;
 288 #endif // wxUSE_RICHEDIT
 289
 290 #if wxUSE_INKEDIT && wxUSE_RICHEDIT
 291     m_isInkEdit = 0;
 292 #endif
 293
 294     m_privateContextMenu = NULL;
 295     m_updatesCount = -1;
 296     m_isNativeCaretShown = true;
 297 }
 298
 299 wxTextCtrl::~wxTextCtrl()
 300 {
 301 #if wxUSE_DRAG_AND_DROP && wxUSE_RICHEDIT
 302     if ( m_dropTarget == wxRICHTEXT_DEFAULT_DROPTARGET )
 303     {
 304         // don't try to destroy this dummy pointer in the base class dtor
 305         m_dropTarget = NULL;
 306     }
 307 #endif // wxUSE_DRAG_AND_DROP && wxUSE_RICHEDIT
 308
 309     delete m_privateContextMenu;
 310 }
 311
 312 bool wxTextCtrl::Create(wxWindow *parent,
 313                         wxWindowID id,
 314                         const wxString& value,
 315                         const wxPoint& pos,
 316                         const wxSize& size,
 317                         long style,
 318                         const wxValidator& validator,
 319                         const wxString& name)
 320 {
 321     // base initialization
 322     if ( !CreateControl(parent, id, pos, size, style, validator, name) )
 323         return false;
 324
 325     if ( !MSWCreateText(value, pos, size) )
 326         return false;
 327
 328 #if wxUSE_DRAG_AND_DROP && wxUSE_RICHEDIT
 329     if ( IsRich() )
 330     {
 331         // rich text controls have a default associated drop target which
 332         // allows them to receive (rich) text dropped on them, which is nice,
 333         // but prevents us from associating a user-defined drop target with
 334         // them as we need to unregister the old one first
 335         //
 336         // to make it work, we set m_dropTarget to this special value initially
 337         // and check for it in our SetDropTarget()
 338         m_dropTarget = wxRICHTEXT_DEFAULT_DROPTARGET;
 339     }
 340 #endif // wxUSE_DRAG_AND_DROP && wxUSE_RICHEDIT
 341
 342     return true;
 343 }
 344
 345 // returns true if the platform should explicitly apply a theme border
 346 bool wxTextCtrl::CanApplyThemeBorder() const
 347 {
 348 #ifdef __WXWINCE__
 349     return false;
 350 #else
 351     // Standard text control already handles theming
 352     return ((GetWindowStyle() & (wxTE_RICH|wxTE_RICH2)) != 0);
 353 #endif
 354 }
 355
 356 bool wxTextCtrl::MSWCreateText(const wxString& value,
 357                                const wxPoint& pos,
 358                                const wxSize& size)
 359 {
 360     // translate wxWin style flags to MSW ones
 361     WXDWORD msStyle = MSWGetCreateWindowFlags();
 362
 363     // do create the control - either an EDIT or RICHEDIT
 364     wxString windowClass = wxT("EDIT");
 365
 366 #if defined(__POCKETPC__) || defined(__SMARTPHONE__)
 367     // A control that capitalizes the first letter
 368     if ( HasFlag(wxTE_CAPITALIZE) )
 369         windowClass = wxT("CAPEDIT");
 370 #endif
 371
 372 #if wxUSE_RICHEDIT
 373     if ( m_windowStyle & wxTE_AUTO_URL )
 374     {
 375         // automatic URL detection only works in RichEdit 2.0+
 376         m_windowStyle |= wxTE_RICH2;
 377     }
 378
 379     if ( m_windowStyle & wxTE_RICH2 )
 380     {
 381         // using richedit 2.0 implies using wxTE_RICH
 382         m_windowStyle |= wxTE_RICH;
 383     }
 384
 385     // we need to load the richedit DLL before creating the rich edit control
 386     if ( m_windowStyle & wxTE_RICH )
 387     {
 388         // versions 2.0, 3.0 and 4.1 of rich edit are mostly compatible with
 389         // each other but not with version 1.0, so we have separate flags for
 390         // the version 1.0 and the others (and so m_verRichEdit may be 0 (plain
 391         // EDIT control), 1 for version 1.0 or 2 for any higher version)
 392         //
 393         // notice that 1.0 has no Unicode support at all so in Unicode build we
 394         // must use another version
 395
 396 #if wxUSE_UNICODE
 397         m_verRichEdit = 2;
 398 #else // !wxUSE_UNICODE
 399         m_verRichEdit = m_windowStyle & wxTE_RICH2 ? 2 : 1;
 400 #endif // wxUSE_UNICODE/!wxUSE_UNICODE
 401
 402 #if wxUSE_INKEDIT
 403         // First test if we can load an ink edit control. Normally, all edit
 404         // controls will be made ink edit controls if a tablet environment is
 405         // found (or if msw.inkedit != 0 and the InkEd.dll is present).
 406         // However, an application can veto ink edit controls by either specifying
 407         // msw.inkedit = 0 or by removing wxTE_RICH[2] from the style.
 408         //
 409         if ((wxSystemSettings::HasFeature(wxSYS_TABLET_PRESENT) || wxSystemOptions::GetOptionInt(wxT("msw.inkedit")) != 0) &&
 410             !(wxSystemOptions::HasOption(wxT("msw.inkedit")) && wxSystemOptions::GetOptionInt(wxT("msw.inkedit")) == 0))
 411         {
 412             if (wxRichEditModule::LoadInkEdit())
 413             {
 414                 windowClass = INKEDIT_CLASS;
 415
 416 #if wxUSE_INKEDIT && wxUSE_RICHEDIT
 417                 m_isInkEdit = 1;
 418 #endif
 419
 420                 // Fake rich text version for other calls
 421                 m_verRichEdit = 2;
 422             }
 423         }
 424 #endif
 425
 426         if (!IsInkEdit())
 427         {
 428             if ( m_verRichEdit == 2 )
 429             {
 430                 if ( wxRichEditModule::Load(wxRichEditModule::Version_41) )
 431                 {
 432                     // yes, class name for version 4.1 really is 5.0
 433                     windowClass = _T("RICHEDIT50W");
 434                 }
 435                 else if ( wxRichEditModule::Load(wxRichEditModule::Version_2or3) )
 436                 {
 437                     windowClass = _T("RichEdit20")
 438 #if wxUSE_UNICODE
 439                                 _T("W");
 440 #else // ANSI
 441                                 _T("A");
 442 #endif // Unicode/ANSI
 443                 }
 444                 else // failed to load msftedit.dll and riched20.dll
 445                 {
 446                     m_verRichEdit = 1;
 447                 }
 448             }
 449
 450             if ( m_verRichEdit == 1 )
 451             {
 452                 if ( wxRichEditModule::Load(wxRichEditModule::Version_1) )
 453                 {
 454                     windowClass = _T("RICHEDIT");
 455                 }
 456                 else // failed to load any richedit control DLL
 457                 {
 458                     // only give the error msg once if the DLL can't be loaded
 459                     static bool s_errorGiven = false; // MT ok as only used by GUI
 460
 461                     if ( !s_errorGiven )
 462                     {
 463                         wxLogError(_("Impossible to create a rich edit control, using simple text control instead. Please reinstall riched32.dll"));
 464
 465                         s_errorGiven = true;
 466                     }
 467
 468                     m_verRichEdit = 0;
 469                 }
 470             }
 471         } // !useInkEdit
 472     }
 473 #endif // wxUSE_RICHEDIT
 474
 475     // we need to turn '\n's into "\r\n"s for the multiline controls
 476     wxString valueWin;
 477     if ( m_windowStyle & wxTE_MULTILINE )
 478     {
 479         valueWin = wxTextFile::Translate(value, wxTextFileType_Dos);
 480     }
 481     else // single line
 482     {
 483         valueWin = value;
 484     }
 485
 486     if ( !MSWCreateControl(windowClass.wx_str(), msStyle, pos, size, valueWin) )
 487         return false;
 488
 489 #if wxUSE_RICHEDIT
 490     if (IsRich())
 491     {
 492 #if wxUSE_INKEDIT
 493         if (IsInkEdit())
 494         {
 495             // Pass IEM_InsertText (0) as wParam, in order to have the ink always
 496             // converted to text.
 497             ::SendMessage(GetHwnd(), EM_SETINKINSERTMODE, 0, 0);
 498
 499             // Make sure the mouse can be used for input
 500             ::SendMessage(GetHwnd(), EM_SETUSEMOUSEFORINPUT, 1, 0);
 501         }
 502 #endif
 503
 504         // enable the events we're interested in: we want to get EN_CHANGE as
 505         // for the normal controls
 506         LPARAM mask = ENM_CHANGE;
 507
 508         if (GetRichVersion() == 1 && !IsInkEdit())
 509         {
 510             // we also need EN_MSGFILTER for richedit 1.0 for the reasons
 511             // explained in its handler
 512            mask |= ENM_MOUSEEVENTS;
 513
 514            // we also need to force the appearance of the vertical scrollbar
 515            // initially as otherwise the control doesn't refresh correctly
 516            // after resize: but once the vertical scrollbar had been shown
 517            // (even if it's subsequently hidden) it does
 518            //
 519            // this is clearly a bug and for now it has been only noticed under
 520            // Windows XP, so if we're sure it works correctly under other
 521            // systems we could do this only for XP
 522            SetSize(-1, 1); // 1 is small enough to force vert scrollbar
 523            SetInitialSize(size);
 524         }
 525         else if ( m_windowStyle & wxTE_AUTO_URL )
 526         {
 527             mask |= ENM_LINK;
 528
 529             ::SendMessage(GetHwnd(), EM_AUTOURLDETECT, TRUE, 0);
 530         }
 531
 532         ::SendMessage(GetHwnd(), EM_SETEVENTMASK, 0, mask);
 533     }
 534 #endif // wxUSE_RICHEDIT
 535
 536 #ifndef __WXWINCE__
 537     // Without this, if we pass the size in the constructor and then don't change it,
 538     // the themed borders will be drawn incorrectly.
 539     SetWindowPos(GetHwnd(), NULL, 0, 0, 0, 0,
 540                 SWP_NOZORDER|SWP_NOMOVE|SWP_NOSIZE|SWP_NOACTIVATE|
 541                 SWP_FRAMECHANGED);
 542 #endif
 543
 544     return true;
 545 }
 546
 547 // Make sure the window style (etc.) reflects the HWND style (roughly)
 548 void wxTextCtrl::AdoptAttributesFromHWND()
 549 {
 550     wxWindow::AdoptAttributesFromHWND();
 551
 552     HWND hWnd = GetHwnd();
 553     long style = ::GetWindowLong(hWnd, GWL_STYLE);
 554
 555     // retrieve the style to see whether this is an edit or richedit ctrl
 556 #if wxUSE_RICHEDIT
 557     wxString classname = wxGetWindowClass(GetHWND());
 558
 559     if ( classname.IsSameAs(_T("EDIT"), false /* no case */) )
 560     {
 561         m_verRichEdit = 0;
 562     }
 563     else // rich edit?
 564     {
 565         wxChar c;
 566         if ( wxSscanf(classname, _T("RichEdit%d0%c"), &m_verRichEdit, &c) != 2 )
 567         {
 568             wxLogDebug(_T("Unknown edit control '%s'."), classname.c_str());
 569
 570             m_verRichEdit = 0;
 571         }
 572     }
 573 #endif // wxUSE_RICHEDIT
 574
 575     if (style & ES_MULTILINE)
 576         m_windowStyle |= wxTE_MULTILINE;
 577     if (style & ES_PASSWORD)
 578         m_windowStyle |= wxTE_PASSWORD;
 579     if (style & ES_READONLY)
 580         m_windowStyle |= wxTE_READONLY;
 581     if (style & ES_WANTRETURN)
 582         m_windowStyle |= wxTE_PROCESS_ENTER;
 583     if (style & ES_CENTER)
 584         m_windowStyle |= wxTE_CENTRE;
 585     if (style & ES_RIGHT)
 586         m_windowStyle |= wxTE_RIGHT;
 587 }
 588
 589 WXDWORD wxTextCtrl::MSWGetStyle(long style, WXDWORD *exstyle) const
 590 {
 591     long msStyle = wxControl::MSWGetStyle(style, exstyle);
 592
 593     // styles which we alaways add by default
 594     if ( style & wxTE_MULTILINE )
 595     {
 596         msStyle |= ES_MULTILINE | ES_WANTRETURN;
 597         if ( !(style & wxTE_NO_VSCROLL) )
 598         {
 599             // always adjust the vertical scrollbar automatically if we have it
 600             msStyle |= WS_VSCROLL | ES_AUTOVSCROLL;
 601
 602 #if wxUSE_RICHEDIT
 603             // we have to use this style for the rich edit controls because
 604             // without it the vertical scrollbar never appears at all in
 605             // richedit 3.0 because of our ECO_NOHIDESEL hack (search for it)
 606             if ( style & wxTE_RICH2 )
 607             {
 608                 msStyle |= ES_DISABLENOSCROLL;
 609             }
 610 #endif // wxUSE_RICHEDIT
 611         }
 612
 613         style |= wxTE_PROCESS_ENTER;
 614     }
 615     else // !multiline
 616     {
 617         // there is really no reason to not have this style for single line
 618         // text controls
 619         msStyle |= ES_AUTOHSCROLL;
 620     }
 621
 622     // note that wxTE_DONTWRAP is the same as wxHSCROLL so if we have a horz
 623     // scrollbar, there is no wrapping -- which makes sense
 624     if ( style & wxTE_DONTWRAP )
 625     {
 626         // automatically scroll the control horizontally as necessary
 627         //
 628         // NB: ES_AUTOHSCROLL is needed for richedit controls or they don't
 629         //     show horz scrollbar at all, even in spite of WS_HSCROLL, and as
 630         //     it doesn't seem to do any harm for plain edit controls, add it
 631         //     always
 632         msStyle |= WS_HSCROLL | ES_AUTOHSCROLL;
 633     }
 634
 635     if ( style & wxTE_READONLY )
 636         msStyle |= ES_READONLY;
 637
 638     if ( style & wxTE_PASSWORD )
 639         msStyle |= ES_PASSWORD;
 640
 641     if ( style & wxTE_NOHIDESEL )
 642         msStyle |= ES_NOHIDESEL;
 643
 644     // note that we can't do do "& wxTE_LEFT" as wxTE_LEFT == 0
 645     if ( style & wxTE_CENTRE )
 646         msStyle |= ES_CENTER;
 647     else if ( style & wxTE_RIGHT )
 648         msStyle |= ES_RIGHT;
 649     else
 650         msStyle |= ES_LEFT; // ES_LEFT is 0 as well but for consistency...
 651
 652     return msStyle;
 653 }
 654
 655 void wxTextCtrl::SetWindowStyleFlag(long style)
 656 {
 657     // changing the alignment of the control dynamically works under Win2003
 658     // (but not older Windows version: it seems to work under some versions of
 659     // XP but not other ones, and we have no way to determine it so be
 660     // conservative here) and only for plain EDIT controls (not RICH ones) and
 661     // we have to recreate the control to make it always work
 662     if ( IsRich() || wxGetWinVersion() < wxWinVersion_2003 )
 663     {
 664         const long alignMask = wxTE_LEFT | wxTE_CENTRE | wxTE_RIGHT;
 665         if ( (style & alignMask) != (GetWindowStyle() & alignMask) )
 666         {
 667             const wxString value = GetValue();
 668             const wxPoint pos = GetPosition();
 669             const wxSize size = GetSize();
 670
 671             // delete the old window
 672             HWND hwnd = GetHwnd();
 673             DissociateHandle();
 674             ::DestroyWindow(hwnd);
 675
 676             // create the new one with the updated flags
 677             m_windowStyle = style;
 678             MSWCreateText(value, pos, size);
 679
 680             // and make sure it has the same attributes as before
 681             if ( m_hasFont )
 682             {
 683                 // calling SetFont(m_font) would do nothing as the code would
 684                 // notice that the font didn't change, so force it to believe
 685                 // that it did
 686                 wxFont font = m_font;
 687                 m_font = wxNullFont;
 688                 SetFont(font);
 689             }
 690
 691             if ( m_hasFgCol )
 692             {
 693                 wxColour colFg = m_foregroundColour;
 694                 m_foregroundColour = wxNullColour;
 695                 SetForegroundColour(colFg);
 696             }
 697
 698             if ( m_hasBgCol )
 699             {
 700                 wxColour colBg = m_backgroundColour;
 701                 m_backgroundColour = wxNullColour;
 702                 SetBackgroundColour(colBg);
 703             }
 704
 705             // note that text styles are lost but this is probably not a big
 706             // problem: if you use styles, you probably don't use nor change
 707             // alignment flags anyhow
 708
 709             return;
 710         }
 711     }
 712
 713 #if wxUSE_RICHEDIT
 714     // we have to deal with some styles separately because they can't be
 715     // changed by simply calling SetWindowLong(GWL_STYLE) but can be changed
 716     // using richedit-specific EM_SETOPTIONS
 717     if ( IsRich() &&
 718             ((style & wxTE_NOHIDESEL) != (GetWindowStyle() & wxTE_NOHIDESEL)) )
 719     {
 720         bool set = (style & wxTE_NOHIDESEL) != 0;
 721
 722         ::SendMessage(GetHwnd(), EM_SETOPTIONS, set ? ECOOP_OR : ECOOP_AND,
 723                       set ? ECO_NOHIDESEL : ~ECO_NOHIDESEL);
 724     }
 725 #endif // wxUSE_RICHEDIT
 726
 727     wxControl::SetWindowStyleFlag(style);
 728 }
 729
 730 // ----------------------------------------------------------------------------
 731 // set/get the controls text
 732 // ----------------------------------------------------------------------------
 733
 734 bool wxTextCtrl::IsEmpty() const
 735 {
 736     // this is an optimization for multiline controls containing a lot of text
 737     if ( IsMultiLine() && GetNumberOfLines() != 1 )
 738         return false;
 739
 740     return wxTextCtrlBase::IsEmpty();
 741 }
 742
 743 wxString wxTextCtrl::GetValue() const
 744 {
 745     // range 0..-1 is special for GetRange() and means to retrieve all text
 746     return GetRange(0, -1);
 747 }
 748
 749 wxString wxTextCtrl::GetRange(long from, long to) const
 750 {
 751     wxString str;
 752
 753     if ( from >= to && to != -1 )
 754     {
 755         // nothing to retrieve
 756         return str;
 757     }
 758
 759 #if wxUSE_RICHEDIT
 760     if ( IsRich() )
 761     {
 762         int len = GetWindowTextLength(GetHwnd());
 763         if ( len > from )
 764         {
 765             if ( to == -1 )
 766                 to = len;
 767
 768 #if !wxUSE_UNICODE
 769             // we must use EM_STREAMOUT if we don't want to lose all characters
 770             // not representable in the current character set (EM_GETTEXTRANGE
 771             // simply replaces them with question marks...)
 772             if ( GetRichVersion() > 1 )
 773             {
 774                 // we must have some encoding, otherwise any 8bit chars in the
 775                 // control are simply *lost* (replaced by '?')
 776                 wxFontEncoding encoding = wxFONTENCODING_SYSTEM;
 777
 778                 wxFont font = m_defaultStyle.GetFont();
 779                 if ( !font.Ok() )
 780                     font = GetFont();
 781
 782                 if ( font.Ok() )
 783                 {
 784                    encoding = font.GetEncoding();
 785                 }
 786
 787                 if ( encoding == wxFONTENCODING_SYSTEM )
 788                 {
 789                     encoding = wxLocale::GetSystemEncoding();
 790                 }
 791
 792                 if ( encoding == wxFONTENCODING_SYSTEM )
 793                 {
 794                     encoding = wxFONTENCODING_ISO8859_1;
 795                 }
 796
 797                 str = StreamOut(encoding);
 798
 799                 if ( !str.empty() )
 800                 {
 801                     // we have to manually extract the required part, luckily
 802                     // this is easy in this case as EOL characters in str are
 803                     // just LFs because we remove CRs in wxRichEditStreamOut
 804                     str = str.Mid(from, to - from);
 805                 }
 806             }
 807
 808             // StreamOut() wasn't used or failed, try to do it in normal way
 809             if ( str.empty() )
 810 #endif // !wxUSE_UNICODE
 811             {
 812                 // alloc one extra WORD as needed by the control
 813                 wxStringBuffer tmp(str, ++len);
 814                 wxChar *p = tmp;
 815
 816                 TEXTRANGE textRange;
 817                 textRange.chrg.cpMin = from;
 818                 textRange.chrg.cpMax = to;
 819                 textRange.lpstrText = p;
 820
 821                 (void)::SendMessage(GetHwnd(), EM_GETTEXTRANGE,
 822                                     0, (LPARAM)&textRange);
 823
 824                 if ( m_verRichEdit > 1 )
 825                 {
 826                     // RichEdit 2.0 uses just CR ('\r') for the
 827                     // newlines which is neither Unix nor Windows
 828                     // style - convert it to something reasonable
 829                     for ( ; *p; p++ )
 830                     {
 831                         if ( *p == _T('\r') )
 832                             *p = _T('\n');
 833                     }
 834                 }
 835             }
 836
 837             if ( m_verRichEdit == 1 )
 838             {
 839                 // convert to the canonical form - see comment below
 840                 str = wxTextFile::Translate(str, wxTextFileType_Unix);
 841             }
 842         }
 843         //else: no text at all, leave the string empty
 844     }
 845     else
 846 #endif // wxUSE_RICHEDIT
 847     {
 848         // retrieve all text
 849         str = wxGetWindowText(GetHWND());
 850
 851         // need only a range?
 852         if ( from < to )
 853         {
 854             str = str.Mid(from, to - from);
 855         }
 856
 857         // WM_GETTEXT uses standard DOS CR+LF (\r\n) convention - convert to the
 858         // canonical one (same one as above) for consistency with the other kinds
 859         // of controls and, more importantly, with the other ports
 860         str = wxTextFile::Translate(str, wxTextFileType_Unix);
 861     }
 862
 863     return str;
 864 }
 865
 866 void wxTextCtrl::DoSetValue(const wxString& value, int flags)
 867 {
 868     // if the text is long enough, it's faster to just set it instead of first
 869     // comparing it with the old one (chances are that it will be different
 870     // anyhow, this comparison is there to avoid flicker for small single-line
 871     // edit controls mostly)
 872     if ( (value.length() > 0x400) || (value != GetValue()) )
 873     {
 874         DoWriteText(value, flags /* doesn't include SelectionOnly here */);
 875
 876         // mark the control as being not dirty - we changed its text, not the
 877         // user
 878         DiscardEdits();
 879
 880         // for compatibility, don't move the cursor when doing SetValue()
 881         SetInsertionPoint(0);
 882     }
 883     else // same text
 884     {
 885         // still reset the modified flag even if the value didn't really change
 886         // because now it comes from the program and not the user (and do it
 887         // before generating the event so that the event handler could get the
 888         // expected value from IsModified())
 889         DiscardEdits();
 890
 891         // still send an event for consistency
 892         if (flags & SetValue_SendEvent)
 893             SendUpdateEvent();
 894     }
 895 }
 896
 897 #if wxUSE_RICHEDIT && (!wxUSE_UNICODE || wxUSE_UNICODE_MSLU)
 898
 899 // TODO: using memcpy() would improve performance a lot for big amounts of text
 900
 901 DWORD CALLBACK
 902 wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb)
 903 {
 904     *pcb = 0;
 905
 906     const wchar_t ** const ppws = (const wchar_t **)dwCookie;
 907
 908     wchar_t *wbuf = (wchar_t *)buf;
 909     const wchar_t *wpc = *ppws;
 910     while ( cb && *wpc )
 911     {
 912         *wbuf++ = *wpc++;
 913
 914         cb -= sizeof(wchar_t);
 915         (*pcb) += sizeof(wchar_t);
 916     }
 917
 918     *ppws = wpc;
 919
 920     return 0;
 921 }
 922
 923 // helper struct used to pass parameters from wxTextCtrl to wxRichEditStreamOut
 924 struct wxStreamOutData
 925 {
 926     wchar_t *wpc;
 927     size_t len;
 928 };
 929
 930 DWORD CALLBACK
 931 wxRichEditStreamOut(DWORD_PTR dwCookie, BYTE *buf, LONG cb, LONG *pcb)
 932 {
 933     *pcb = 0;
 934
 935     wxStreamOutData *data = (wxStreamOutData *)dwCookie;
 936
 937     const wchar_t *wbuf = (const wchar_t *)buf;
 938     wchar_t *wpc = data->wpc;
 939     while ( cb )
 940     {
 941         wchar_t wch = *wbuf++;
 942
 943         // turn "\r\n" into "\n" on the fly
 944         if ( wch != L'\r' )
 945             *wpc++ = wch;
 946         else
 947             data->len--;
 948
 949         cb -= sizeof(wchar_t);
 950         (*pcb) += sizeof(wchar_t);
 951     }
 952
 953     data->wpc = wpc;
 954
 955     return 0;
 956 }
 957
 958
 959 #if wxUSE_UNICODE_MSLU
 960     #define UNUSED_IF_MSLU(param)
 961 #else
 962     #define UNUSED_IF_MSLU(param) param
 963 #endif
 964
 965 bool
 966 wxTextCtrl::StreamIn(const wxString& value,
 967                      wxFontEncoding UNUSED_IF_MSLU(encoding),
 968                      bool selectionOnly)
 969 {
 970 #if wxUSE_UNICODE_MSLU
 971     const wchar_t *wpc = value.c_str();
 972 #else // !wxUSE_UNICODE_MSLU
 973     wxCSConv conv(encoding);
 974
 975     const size_t len = conv.MB2WC(NULL, value.mb_str(), value.length());
 976
 977 #if wxUSE_WCHAR_T
 978     wxWCharBuffer wchBuf(len);
 979     wchar_t *wpc = wchBuf.data();
 980 #else
 981     wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
 982     wchar_t *wpc = wchBuf;
 983 #endif
 984
 985     conv.MB2WC(wpc, value.mb_str(), value.length());
 986 #endif // wxUSE_UNICODE_MSLU
 987
 988     // finally, stream it in the control
 989     EDITSTREAM eds;
 990     wxZeroMemory(eds);
 991     eds.dwCookie = (DWORD)&wpc;
 992     // the cast below is needed for broken (very) old mingw32 headers
 993     eds.pfnCallback = (EDITSTREAMCALLBACK)wxRichEditStreamIn;
 994
 995     // same problem as in DoWriteText(): we can get multiple events here
 996     UpdatesCountFilter ucf(m_updatesCount);
 997
 998     ::SendMessage(GetHwnd(), EM_STREAMIN,
 999                   SF_TEXT |
1000                   SF_UNICODE |
1001                   (selectionOnly ? SFF_SELECTION : 0),
1002                   (LPARAM)&eds);
1003
1004     // It's okay for EN_UPDATE to not be sent if the selection is empty and
1005     // the text is empty, otherwise warn the programmer about it.
1006     wxASSERT_MSG( ucf.GotUpdate() || ( !HasSelection() && value.empty() ),
1007                   _T("EM_STREAMIN didn't send EN_UPDATE?") );
1008
1009     if ( eds.dwError )
1010     {
1011         wxLogLastError(_T("EM_STREAMIN"));
1012     }
1013
1014 #if !wxUSE_WCHAR_T
1015     free(wchBuf);
1016 #endif // !wxUSE_WCHAR_T
1017
1018     return true;
1019 }
1020
1021 #if !wxUSE_UNICODE_MSLU
1022
1023 wxString
1024 wxTextCtrl::StreamOut(wxFontEncoding encoding, bool selectionOnly) const
1025 {
1026     wxString out;
1027
1028     const int len = GetWindowTextLength(GetHwnd());
1029
1030 #if wxUSE_WCHAR_T
1031     wxWCharBuffer wchBuf(len);
1032     wchar_t *wpc = wchBuf.data();
1033 #else
1034     wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
1035     wchar_t *wpc = wchBuf;
1036 #endif
1037
1038     wxStreamOutData data;
1039     data.wpc = wpc;
1040     data.len = len;
1041
1042     EDITSTREAM eds;
1043     wxZeroMemory(eds);
1044     eds.dwCookie = (DWORD)&data;
1045     eds.pfnCallback = wxRichEditStreamOut;
1046
1047     ::SendMessage
1048       (
1049         GetHwnd(),
1050         EM_STREAMOUT,
1051         SF_TEXT | SF_UNICODE | (selectionOnly ? SFF_SELECTION : 0),
1052         (LPARAM)&eds
1053       );
1054
1055     if ( eds.dwError )
1056     {
1057         wxLogLastError(_T("EM_STREAMOUT"));
1058     }
1059     else // streamed out ok
1060     {
1061         // NUL-terminate the string because its length could have been
1062         // decreased by wxRichEditStreamOut
1063         *(wchBuf.data() + data.len) = L'\0';
1064
1065         // now convert to the given encoding (this is a possibly lossful
1066         // conversion but what else can we do)
1067         wxCSConv conv(encoding);
1068         size_t lenNeeded = conv.WC2MB(NULL, wchBuf, 0);
1069         if ( lenNeeded++ )
1070         {
1071             conv.WC2MB(wxStringBuffer(out, lenNeeded), wchBuf, lenNeeded);
1072         }
1073     }
1074
1075 #if !wxUSE_WCHAR_T
1076     free(wchBuf);
1077 #endif // !wxUSE_WCHAR_T
1078
1079     return out;
1080 }
1081
1082 #endif // !wxUSE_UNICODE_MSLU
1083
1084 #endif // wxUSE_RICHEDIT
1085
1086 void wxTextCtrl::WriteText(const wxString& value)
1087 {
1088     DoWriteText(value);
1089 }
1090
1091 void wxTextCtrl::DoWriteText(const wxString& value, int flags)
1092 {
1093     bool selectionOnly = (flags & SetValue_SelectionOnly) != 0;
1094     wxString valueDos;
1095     if ( m_windowStyle & wxTE_MULTILINE )
1096         valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
1097     else
1098         valueDos = value;
1099
1100 #if wxUSE_RICHEDIT
1101     // there are several complications with the rich edit controls here
1102     bool done = false;
1103     if ( IsRich() )
1104     {
1105         // first, ensure that the new text will be in the default style
1106         if ( !m_defaultStyle.IsDefault() )
1107         {
1108             long start, end;
1109             GetSelection(&start, &end);
1110             SetStyle(start, end, m_defaultStyle);
1111         }
1112
1113 #if wxUSE_UNICODE_MSLU
1114         // RichEdit doesn't have Unicode version of EM_REPLACESEL on Win9x,
1115         // but EM_STREAMIN works
1116         if ( wxUsingUnicowsDll() && GetRichVersion() > 1 )
1117         {
1118            done = StreamIn(valueDos, wxFONTENCODING_SYSTEM, selectionOnly);
1119         }
1120 #endif // wxUSE_UNICODE_MSLU
1121
1122 #if !wxUSE_UNICODE
1123         // next check if the text we're inserting must be shown in a non
1124         // default charset -- this only works for RichEdit > 1.0
1125         if ( GetRichVersion() > 1 )
1126         {
1127             wxFont font = m_defaultStyle.GetFont();
1128             if ( !font.Ok() )
1129                 font = GetFont();
1130
1131             if ( font.Ok() )
1132             {
1133                wxFontEncoding encoding = font.GetEncoding();
1134                if ( encoding != wxFONTENCODING_SYSTEM )
1135                {
1136                    // we have to use EM_STREAMIN to force richedit control 2.0+
1137                    // to show any text in the non default charset -- otherwise
1138                    // it thinks it knows better than we do and always shows it
1139                    // in the default one
1140                    done = StreamIn(valueDos, encoding, selectionOnly);
1141                }
1142             }
1143         }
1144 #endif // !wxUSE_UNICODE
1145     }
1146
1147     if ( !done )
1148 #endif // wxUSE_RICHEDIT
1149     {
1150         // in some cases we get 2 EN_CHANGE notifications after the SendMessage
1151         // call (this happens for plain EDITs with EM_REPLACESEL and under some
1152         // -- undetermined -- conditions with rich edit) and sometimes we don't
1153         // get any events at all (plain EDIT with WM_SETTEXT), so ensure that
1154         // we generate exactly one of them by ignoring all but the first one in
1155         // SendUpdateEvent() and generating one ourselves if we hadn't got any
1156         // notifications from Windows
1157         if ( !(flags & SetValue_SendEvent) )
1158             m_updatesCount = -2;        // suppress any update event
1159
1160         UpdatesCountFilter ucf(m_updatesCount);
1161
1162         ::SendMessage(GetHwnd(), selectionOnly ? EM_REPLACESEL : WM_SETTEXT,
1163                       // EM_REPLACESEL takes 1 to indicate the operation should be redoable
1164                       selectionOnly ? 1 : 0, (LPARAM)valueDos.wx_str());
1165
1166         if ( !ucf.GotUpdate() && (flags & SetValue_SendEvent) )
1167         {
1168             SendUpdateEvent();
1169         }
1170     }
1171 }
1172
1173 void wxTextCtrl::AppendText(const wxString& text)
1174 {
1175     SetInsertionPointEnd();
1176
1177     WriteText(text);
1178
1179 #if wxUSE_RICHEDIT
1180     // don't do this if we're frozen, saves some time
1181     if ( !IsFrozen() && IsMultiLine() && GetRichVersion() > 1 )
1182     {
1183         // setting the caret to the end and showing it simply doesn't work for
1184         // RichEdit 2.0 -- force it to still do what we want
1185         ::SendMessage(GetHwnd(), EM_LINESCROLL, 0, GetNumberOfLines());
1186     }
1187 #endif // wxUSE_RICHEDIT
1188 }
1189
1190 void wxTextCtrl::Clear()
1191 {
1192     ::SetWindowText(GetHwnd(), wxEmptyString);
1193
1194 #if wxUSE_RICHEDIT
1195     if ( !IsRich() )
1196 #endif // wxUSE_RICHEDIT
1197     {
1198         // rich edit controls send EN_UPDATE from WM_SETTEXT handler themselves
1199         // but the normal ones don't -- make Clear() behaviour consistent by
1200         // always sending this event
1201
1202         // Windows already sends an update event for single-line
1203         // controls.
1204         if ( m_windowStyle & wxTE_MULTILINE )
1205             SendUpdateEvent();
1206     }
1207 }
1208
1209 #ifdef __WIN32__
1210
1211 bool wxTextCtrl::EmulateKeyPress(const wxKeyEvent& event)
1212 {
1213     SetFocus();
1214
1215     size_t lenOld = GetValue().length();
1216
1217     wxUint32 code = event.GetRawKeyCode();
1218     ::keybd_event((BYTE)code, 0, 0 /* key press */, 0);
1219     ::keybd_event((BYTE)code, 0, KEYEVENTF_KEYUP, 0);
1220
1221     // assume that any alphanumeric key changes the total number of characters
1222     // in the control - this should work in 99% of cases
1223     return GetValue().length() != lenOld;
1224 }
1225
1226 #endif // __WIN32__
1227
1228 // ----------------------------------------------------------------------------
1229 // Clipboard operations
1230 // ----------------------------------------------------------------------------
1231
1232 void wxTextCtrl::Copy()
1233 {
1234     if (CanCopy())
1235     {
1236         ::SendMessage(GetHwnd(), WM_COPY, 0, 0L);
1237     }
1238 }
1239
1240 void wxTextCtrl::Cut()
1241 {
1242     if (CanCut())
1243     {
1244         ::SendMessage(GetHwnd(), WM_CUT, 0, 0L);
1245     }
1246 }
1247
1248 void wxTextCtrl::Paste()
1249 {
1250     if (CanPaste())
1251     {
1252         ::SendMessage(GetHwnd(), WM_PASTE, 0, 0L);
1253     }
1254 }
1255
1256 bool wxTextCtrl::HasSelection() const
1257 {
1258     long from, to;
1259     GetSelection(&from, &to);
1260     return from != to;
1261 }
1262
1263 bool wxTextCtrl::CanCopy() const
1264 {
1265     // Can copy if there's a selection
1266     return HasSelection();
1267 }
1268
1269 bool wxTextCtrl::CanCut() const
1270 {
1271     return CanCopy() && IsEditable();
1272 }
1273
1274 bool wxTextCtrl::CanPaste() const
1275 {
1276     if ( !IsEditable() )
1277         return false;
1278
1279 #if wxUSE_RICHEDIT
1280     if ( IsRich() )
1281     {
1282         UINT cf = 0; // 0 == any format
1283
1284         return ::SendMessage(GetHwnd(), EM_CANPASTE, cf, 0) != 0;
1285     }
1286 #endif // wxUSE_RICHEDIT
1287
1288     // Standard edit control: check for straight text on clipboard
1289     if ( !::OpenClipboard(GetHwndOf(wxTheApp->GetTopWindow())) )
1290         return false;
1291
1292     bool isTextAvailable = ::IsClipboardFormatAvailable(CF_TEXT) != 0;
1293     ::CloseClipboard();
1294
1295     return isTextAvailable;
1296 }
1297
1298 // ----------------------------------------------------------------------------
1299 // Accessors
1300 // ----------------------------------------------------------------------------
1301
1302 void wxTextCtrl::SetEditable(bool editable)
1303 {
1304     HWND hWnd = GetHwnd();
1305     ::SendMessage(hWnd, EM_SETREADONLY, (WPARAM)!editable, (LPARAM)0L);
1306 }
1307
1308 void wxTextCtrl::SetInsertionPoint(long pos)
1309 {
1310     DoSetSelection(pos, pos);
1311 }
1312
1313 void wxTextCtrl::SetInsertionPointEnd()
1314 {
1315     // we must not do anything if the caret is already there because calling
1316     // SetInsertionPoint() thaws the controls if Freeze() had been called even
1317     // if it doesn't actually move the caret anywhere and so the simple fact of
1318     // doing it results in horrible flicker when appending big amounts of text
1319     // to the control in a few chunks (see DoAddText() test in the text sample)
1320     const wxTextPos lastPosition = GetLastPosition();
1321     if ( GetInsertionPoint() == lastPosition )
1322     {
1323         return;
1324     }
1325
1326     long pos;
1327
1328 #if wxUSE_RICHEDIT
1329     if ( m_verRichEdit == 1 )
1330     {
1331         // we don't have to waste time calling GetLastPosition() in this case
1332         pos = -1;
1333     }
1334     else // !RichEdit 1.0
1335 #endif // wxUSE_RICHEDIT
1336     {
1337         pos = lastPosition;
1338     }
1339
1340     SetInsertionPoint(pos);
1341 }
1342
1343 long wxTextCtrl::GetInsertionPoint() const
1344 {
1345 #if wxUSE_RICHEDIT
1346     if ( IsRich() )
1347     {
1348         CHARRANGE range;
1349         range.cpMin = 0;
1350         range.cpMax = 0;
1351         ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
1352         return range.cpMin;
1353     }
1354 #endif // wxUSE_RICHEDIT
1355
1356     DWORD Pos = (DWORD)::SendMessage(GetHwnd(), EM_GETSEL, 0, 0L);
1357     return Pos & 0xFFFF;
1358 }
1359
1360 wxTextPos wxTextCtrl::GetLastPosition() const
1361 {
1362     int numLines = GetNumberOfLines();
1363     long posStartLastLine = XYToPosition(0, numLines - 1);
1364
1365     long lenLastLine = GetLengthOfLineContainingPos(posStartLastLine);
1366
1367     return posStartLastLine + lenLastLine;
1368 }
1369
1370 // If the return values from and to are the same, there is no
1371 // selection.
1372 void wxTextCtrl::GetSelection(long* from, long* to) const
1373 {
1374 #if wxUSE_RICHEDIT
1375     if ( IsRich() )
1376     {
1377         CHARRANGE charRange;
1378         ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &charRange);
1379
1380         *from = charRange.cpMin;
1381         *to = charRange.cpMax;
1382     }
1383     else
1384 #endif // !wxUSE_RICHEDIT
1385     {
1386         DWORD dwStart, dwEnd;
1387         ::SendMessage(GetHwnd(), EM_GETSEL, (WPARAM)&dwStart, (LPARAM)&dwEnd);
1388
1389         *from = dwStart;
1390         *to = dwEnd;
1391     }
1392 }
1393
1394 bool wxTextCtrl::IsEditable() const
1395 {
1396     // strangely enough, we may be called before the control is created: our
1397     // own Create() calls MSWGetStyle() which calls AcceptsFocus() which calls
1398     // us
1399     if ( !m_hWnd )
1400         return true;
1401
1402     long style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1403
1404     return (style & ES_READONLY) == 0;
1405 }
1406
1407 // ----------------------------------------------------------------------------
1408 // selection
1409 // ----------------------------------------------------------------------------
1410
1411 void wxTextCtrl::SetSelection(long from, long to)
1412 {
1413     // if from and to are both -1, it means (in wxWidgets) that all text should
1414     // be selected - translate into Windows convention
1415     if ( (from == -1) && (to == -1) )
1416     {
1417         from = 0;
1418         to = -1;
1419     }
1420
1421     DoSetSelection(from, to);
1422 }
1423
1424 void wxTextCtrl::DoSetSelection(long from, long to, bool scrollCaret)
1425 {
1426     HWND hWnd = GetHwnd();
1427
1428 #if wxUSE_RICHEDIT
1429     if ( IsRich() )
1430     {
1431         CHARRANGE range;
1432         range.cpMin = from;
1433         range.cpMax = to;
1434         ::SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM) &range);
1435     }
1436     else
1437 #endif // wxUSE_RICHEDIT
1438     {
1439         ::SendMessage(hWnd, EM_SETSEL, (WPARAM)from, (LPARAM)to);
1440     }
1441
1442     if ( scrollCaret && !IsFrozen() )
1443     {
1444 #if wxUSE_RICHEDIT
1445         // richedit 3.0 (i.e. the version living in riched20.dll distributed
1446         // with Windows 2000 and beyond) doesn't honour EM_SCROLLCARET when
1447         // emulating richedit 2.0 unless the control has focus or ECO_NOHIDESEL
1448         // option is set (but it does work ok in richedit 1.0 mode...)
1449         //
1450         // so to make it work we either need to give focus to it here which
1451         // will probably create many problems (dummy focus events; window
1452         // containing the text control being brought to foreground
1453         // unexpectedly; ...) or to temporarily set ECO_NOHIDESEL which may
1454         // create other problems too -- and in fact it does because if we turn
1455         // on/off this style while appending the text to the control, the
1456         // vertical scrollbar never appears in it even if we append tons of
1457         // text and to work around this the only solution I found was to use
1458         // ES_DISABLENOSCROLL
1459         //
1460         // this is very ugly but I don't see any other way to make this work
1461         long style = 0;
1462         if ( GetRichVersion() > 1 )
1463         {
1464             if ( !HasFlag(wxTE_NOHIDESEL) )
1465             {
1466                 // setting ECO_NOHIDESEL also sets WS_VISIBLE and possibly
1467                 // others, remember the style so we can reset it later if needed
1468                 style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1469                 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1470                               ECOOP_OR, ECO_NOHIDESEL);
1471             }
1472             //else: everything is already ok
1473         }
1474 #endif // wxUSE_RICHEDIT
1475
1476         ::SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
1477
1478 #if wxUSE_RICHEDIT
1479         // restore ECO_NOHIDESEL if we changed it
1480         if ( GetRichVersion() > 1 && !HasFlag(wxTE_NOHIDESEL) )
1481         {
1482             ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1483                           ECOOP_AND, ~ECO_NOHIDESEL);
1484             if ( style != ::GetWindowLong(GetHwnd(), GWL_STYLE) )
1485                 ::SetWindowLong(GetHwnd(), GWL_STYLE, style);
1486         }
1487 #endif // wxUSE_RICHEDIT
1488     }
1489 }
1490
1491 // ----------------------------------------------------------------------------
1492 // Working with files
1493 // ----------------------------------------------------------------------------
1494
1495 bool wxTextCtrl::DoLoadFile(const wxString& file, int fileType)
1496 {
1497     if ( wxTextCtrlBase::DoLoadFile(file, fileType) )
1498     {
1499         // update the size limit if needed
1500         AdjustSpaceLimit();
1501
1502         return true;
1503     }
1504
1505     return false;
1506 }
1507
1508 // ----------------------------------------------------------------------------
1509 // Editing
1510 // ----------------------------------------------------------------------------
1511
1512 void wxTextCtrl::Replace(long from, long to, const wxString& value)
1513 {
1514     // Set selection and remove it
1515     DoSetSelection(from, to, false /* don't scroll caret into view */);
1516
1517     DoWriteText(value);
1518 }
1519
1520 void wxTextCtrl::Remove(long from, long to)
1521 {
1522     Replace(from, to, wxEmptyString);
1523 }
1524
1525 bool wxTextCtrl::IsModified() const
1526 {
1527     return ::SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0;
1528 }
1529
1530 void wxTextCtrl::MarkDirty()
1531 {
1532     ::SendMessage(GetHwnd(), EM_SETMODIFY, TRUE, 0L);
1533 }
1534
1535 void wxTextCtrl::DiscardEdits()
1536 {
1537     ::SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0L);
1538 }
1539
1540 int wxTextCtrl::GetNumberOfLines() const
1541 {
1542     return (int)::SendMessage(GetHwnd(), EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0);
1543 }
1544
1545 // ----------------------------------------------------------------------------
1546 // Positions <-> coords
1547 // ----------------------------------------------------------------------------
1548
1549 long wxTextCtrl::XYToPosition(long x, long y) const
1550 {
1551     // This gets the char index for the _beginning_ of this line
1552     long charIndex = ::SendMessage(GetHwnd(), EM_LINEINDEX, (WPARAM)y, (LPARAM)0);
1553
1554     return charIndex + x;
1555 }
1556
1557 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
1558 {
1559     HWND hWnd = GetHwnd();
1560
1561     // This gets the line number containing the character
1562     long lineNo;
1563 #if wxUSE_RICHEDIT
1564     if ( IsRich() )
1565     {
1566         lineNo = ::SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, (LPARAM)pos);
1567     }
1568     else
1569 #endif // wxUSE_RICHEDIT
1570     {
1571         lineNo = ::SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, 0);
1572     }
1573
1574     if ( lineNo == -1 )
1575     {
1576         // no such line
1577         return false;
1578     }
1579
1580     // This gets the char index for the _beginning_ of this line
1581     long charIndex = ::SendMessage(hWnd, EM_LINEINDEX, (WPARAM)lineNo, (LPARAM)0);
1582     if ( charIndex == -1 )
1583     {
1584         return false;
1585     }
1586
1587     // The X position must therefore be the different between pos and charIndex
1588     if ( x )
1589         *x = pos - charIndex;
1590     if ( y )
1591         *y = lineNo;
1592
1593     return true;
1594 }
1595
1596 wxTextCtrlHitTestResult
1597 wxTextCtrl::HitTest(const wxPoint& pt, long *posOut) const
1598 {
1599     // first get the position from Windows
1600     LPARAM lParam;
1601
1602 #if wxUSE_RICHEDIT
1603     POINTL ptl;
1604     if ( IsRich() )
1605     {
1606         // for rich edit controls the position is passed iva the struct fields
1607         ptl.x = pt.x;
1608         ptl.y = pt.y;
1609         lParam = (LPARAM)&ptl;
1610     }
1611     else
1612 #endif // wxUSE_RICHEDIT
1613     {
1614         // for the plain ones, we are limited to 16 bit positions which are
1615         // combined in a single 32 bit value
1616         lParam = MAKELPARAM(pt.x, pt.y);
1617     }
1618
1619     LRESULT pos = ::SendMessage(GetHwnd(), EM_CHARFROMPOS, 0, lParam);
1620
1621     if ( pos == -1 )
1622     {
1623         // this seems to indicate an error...
1624         return wxTE_HT_UNKNOWN;
1625     }
1626
1627 #if wxUSE_RICHEDIT
1628     if ( !IsRich() )
1629 #endif // wxUSE_RICHEDIT
1630     {
1631         // for plain EDIT controls the higher word contains something else
1632         pos = LOWORD(pos);
1633     }
1634
1635
1636     // next determine where it is relatively to our point: EM_CHARFROMPOS
1637     // always returns the closest character but we need to be more precise, so
1638     // double check that we really are where it pretends
1639     POINTL ptReal;
1640
1641 #if wxUSE_RICHEDIT
1642     // FIXME: we need to distinguish between richedit 2 and 3 here somehow but
1643     //        we don't know how to do it
1644     if ( IsRich() )
1645     {
1646         ::SendMessage(GetHwnd(), EM_POSFROMCHAR, (WPARAM)&ptReal, pos);
1647     }
1648     else
1649 #endif // wxUSE_RICHEDIT
1650     {
1651         LRESULT lRc = ::SendMessage(GetHwnd(), EM_POSFROMCHAR, pos, 0);
1652
1653         if ( lRc == -1 )
1654         {
1655             // this is apparently returned when pos corresponds to the last
1656             // position
1657             ptReal.x =
1658             ptReal.y = 0;
1659         }
1660         else
1661         {
1662             ptReal.x = LOWORD(lRc);
1663             ptReal.y = HIWORD(lRc);
1664         }
1665     }
1666
1667     wxTextCtrlHitTestResult rc;
1668
1669     if ( pt.y > ptReal.y + GetCharHeight() )
1670         rc = wxTE_HT_BELOW;
1671     else if ( pt.x > ptReal.x + GetCharWidth() )
1672         rc = wxTE_HT_BEYOND;
1673     else
1674         rc = wxTE_HT_ON_TEXT;
1675
1676     if ( posOut )
1677         *posOut = pos;
1678
1679     return rc;
1680 }
1681
1682 // ----------------------------------------------------------------------------
1683 //
1684 // ----------------------------------------------------------------------------
1685
1686 void wxTextCtrl::ShowPosition(long pos)
1687 {
1688     HWND hWnd = GetHwnd();
1689
1690     // To scroll to a position, we pass the number of lines and characters
1691     // to scroll *by*. This means that we need to:
1692     // (1) Find the line position of the current line.
1693     // (2) Find the line position of pos.
1694     // (3) Scroll by (pos - current).
1695     // For now, ignore the horizontal scrolling.
1696
1697     // Is this where scrolling is relative to - the line containing the caret?
1698     // Or is the first visible line??? Try first visible line.
1699 //    int currentLineLineNo1 = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)-1, (LPARAM)0L);
1700
1701     int currentLineLineNo = (int)::SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, (WPARAM)0, (LPARAM)0L);
1702
1703     int specifiedLineLineNo = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, (LPARAM)0L);
1704
1705     int linesToScroll = specifiedLineLineNo - currentLineLineNo;
1706
1707     if (linesToScroll != 0)
1708       (void)::SendMessage(hWnd, EM_LINESCROLL, (WPARAM)0, (LPARAM)linesToScroll);
1709 }
1710
1711 long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const
1712 {
1713     return ::SendMessage(GetHwnd(), EM_LINELENGTH, (WPARAM)pos, 0);
1714 }
1715
1716 int wxTextCtrl::GetLineLength(long lineNo) const
1717 {
1718     long pos = XYToPosition(0, lineNo);
1719
1720     return GetLengthOfLineContainingPos(pos);
1721 }
1722
1723 wxString wxTextCtrl::GetLineText(long lineNo) const
1724 {
1725     size_t len = (size_t)GetLineLength(lineNo) + 1;
1726
1727     // there must be at least enough place for the length WORD in the
1728     // buffer
1729     len += sizeof(WORD);
1730
1731     wxString str;
1732     {
1733         wxStringBufferLength tmp(str, len);
1734         wxChar *buf = tmp;
1735
1736         *(WORD *)buf = (WORD)len;
1737         len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf);
1738
1739 #if wxUSE_RICHEDIT
1740         if ( IsRich() )
1741         {
1742             // remove the '\r' returned by the rich edit control, the user code
1743             // should never see it
1744             if ( buf[len - 2] == _T('\r') && buf[len - 1] == _T('\n') )
1745             {
1746                 // richedit 1.0 uses "\r\n" as line terminator, so remove "\r"
1747                 // here and "\n" below
1748                 buf[len - 2] = _T('\n');
1749                 len--;
1750             }
1751             else if ( buf[len - 1] == _T('\r') )
1752             {
1753                 // richedit 2.0+ uses only "\r", replace it with "\n"
1754                 buf[len - 1] = _T('\n');
1755             }
1756         }
1757 #endif // wxUSE_RICHEDIT
1758
1759         // remove the '\n' at the end, if any (this is how this function is
1760         // supposed to work according to the docs)
1761         if ( buf[len - 1] == _T('\n') )
1762         {
1763             len--;
1764         }
1765
1766         buf[len] = 0;
1767         tmp.SetLength(len);
1768     }
1769
1770     return str;
1771 }
1772
1773 void wxTextCtrl::SetMaxLength(unsigned long len)
1774 {
1775 #if wxUSE_RICHEDIT
1776     if ( IsRich() )
1777     {
1778         ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, len ? len : 0x7fffffff);
1779     }
1780     else
1781 #endif // wxUSE_RICHEDIT
1782     {
1783         if ( len >= 0xffff )
1784         {
1785             // this will set it to a platform-dependent maximum (much more
1786             // than 64Kb under NT)
1787             len = 0;
1788         }
1789
1790         ::SendMessage(GetHwnd(), EM_LIMITTEXT, len, 0);
1791     }
1792 }
1793
1794 // ----------------------------------------------------------------------------
1795 // Undo/redo
1796 // ----------------------------------------------------------------------------
1797
1798 void wxTextCtrl::Undo()
1799 {
1800     if (CanUndo())
1801     {
1802         ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1803     }
1804 }
1805
1806 void wxTextCtrl::Redo()
1807 {
1808     if (CanRedo())
1809     {
1810 #if wxUSE_RICHEDIT
1811         if (GetRichVersion() > 1)
1812             ::SendMessage(GetHwnd(), EM_REDO, 0, 0);
1813         else
1814 #endif
1815         // Same as Undo, since Undo undoes the undo, i.e. a redo.
1816         ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1817     }
1818 }
1819
1820 bool wxTextCtrl::CanUndo() const
1821 {
1822     return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1823 }
1824
1825 bool wxTextCtrl::CanRedo() const
1826 {
1827 #if wxUSE_RICHEDIT
1828     if (GetRichVersion() > 1)
1829         return ::SendMessage(GetHwnd(), EM_CANREDO, 0, 0) != 0;
1830     else
1831 #endif
1832     return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1833 }
1834
1835 // ----------------------------------------------------------------------------
1836 // caret handling (Windows only)
1837 // ----------------------------------------------------------------------------
1838
1839 bool wxTextCtrl::ShowNativeCaret(bool show)
1840 {
1841     if ( show != m_isNativeCaretShown )
1842     {
1843         if ( !(show ? ::ShowCaret(GetHwnd()) : ::HideCaret(GetHwnd())) )
1844         {
1845             // not an error, may simply indicate that it's not shown/hidden
1846             // yet (i.e. it had been hidden/showh 2 times before)
1847             return false;
1848         }
1849
1850         m_isNativeCaretShown = show;
1851     }
1852
1853     return true;
1854 }
1855
1856 // ----------------------------------------------------------------------------
1857 // implemenation details
1858 // ----------------------------------------------------------------------------
1859
1860 void wxTextCtrl::Command(wxCommandEvent & event)
1861 {
1862     SetValue(event.GetString());
1863     ProcessCommand (event);
1864 }
1865
1866 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
1867 {
1868     // By default, load the first file into the text window.
1869     if (event.GetNumberOfFiles() > 0)
1870     {
1871         LoadFile(event.GetFiles()[0]);
1872     }
1873 }
1874
1875 // ----------------------------------------------------------------------------
1876 // kbd input processing
1877 // ----------------------------------------------------------------------------
1878
1879 bool wxTextCtrl::MSWShouldPreProcessMessage(WXMSG* msg)
1880 {
1881     // check for our special keys here: if we don't do it and the parent frame
1882     // uses them as accelerators, they wouldn't work at all, so we disable
1883     // usual preprocessing for them
1884     if ( msg->message == WM_KEYDOWN )
1885     {
1886         const WPARAM vkey = msg->wParam;
1887         if ( HIWORD(msg->lParam) & KF_ALTDOWN )
1888         {
1889             // Alt-Backspace is accelerator for "Undo"
1890             if ( vkey == VK_BACK )
1891                 return false;
1892         }
1893         else // no Alt
1894         {
1895             // we want to process some Ctrl-foo and Shift-bar but no key
1896             // combinations without either Ctrl or Shift nor with both of them
1897             // pressed
1898             const int ctrl = wxIsCtrlDown(),
1899                       shift = wxIsShiftDown();
1900             switch ( ctrl + shift )
1901             {
1902                 default:
1903                     wxFAIL_MSG( _T("how many modifiers have we got?") );
1904                     // fall through
1905
1906                 case 0:
1907                     if ( IsMultiLine() && vkey == VK_RETURN )
1908                         return false;
1909                     // fall through
1910                 case 2:
1911                     break;
1912
1913                 case 1:
1914                     // either Ctrl or Shift pressed
1915                     if ( ctrl )
1916                     {
1917                         switch ( vkey )
1918                         {
1919                             case 'C':
1920                             case 'V':
1921                             case 'X':
1922                             case VK_INSERT:
1923                             case VK_DELETE:
1924                             case VK_HOME:
1925                             case VK_END:
1926                                 return false;
1927                         }
1928                     }
1929                     else // Shift is pressed
1930                     {
1931                         if ( vkey == VK_INSERT || vkey == VK_DELETE )
1932                             return false;
1933                     }
1934             }
1935         }
1936     }
1937
1938     return wxControl::MSWShouldPreProcessMessage(msg);
1939 }
1940
1941 void wxTextCtrl::OnChar(wxKeyEvent& event)
1942 {
1943     switch ( event.GetKeyCode() )
1944     {
1945         case WXK_RETURN:
1946             {
1947                 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1948                 InitCommandEvent(event);
1949                 event.SetString(GetValue());
1950                 if ( GetEventHandler()->ProcessEvent(event) )
1951                 if ( !HasFlag(wxTE_MULTILINE) )
1952                     return;
1953                 //else: multiline controls need Enter for themselves
1954             }
1955             break;
1956
1957         case WXK_TAB:
1958             // ok, so this is getting absolutely ridiculous but I don't see
1959             // any other way to fix this bug: when a multiline text control is
1960             // inside a wxFrame, we need to generate the navigation event as
1961             // otherwise nothing happens at all, but when the same control is
1962             // created inside a dialog, IsDialogMessage() *does* switch focus
1963             // all by itself and so if we do it here as well, it is advanced
1964             // twice and goes to the next control... to prevent this from
1965             // happening we're doing this ugly check, the logic being that if
1966             // we don't have focus then it had been already changed to the next
1967             // control
1968             //
1969             // the right thing to do would, of course, be to understand what
1970             // the hell is IsDialogMessage() doing but this is beyond my feeble
1971             // forces at the moment unfortunately
1972             if ( !(m_windowStyle & wxTE_PROCESS_TAB))
1973             {
1974                 if ( FindFocus() == this )
1975                 {
1976                     int flags = 0;
1977                     if (!event.ShiftDown())
1978                         flags |= wxNavigationKeyEvent::IsForward ;
1979                     if (event.ControlDown())
1980                         flags |= wxNavigationKeyEvent::WinChange ;
1981                     if (Navigate(flags))
1982                         return;
1983                 }
1984             }
1985             else
1986             {
1987                 // Insert tab since calling the default Windows handler
1988                 // doesn't seem to do it
1989                 WriteText(wxT("\t"));
1990                 return;
1991             }
1992             break;
1993     }
1994
1995     // no, we didn't process it
1996     event.Skip();
1997 }
1998
1999 WXLRESULT wxTextCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
2000 {
2001     WXLRESULT lRc = wxTextCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
2002
2003     switch ( nMsg )
2004     {
2005         case WM_GETDLGCODE:
2006             {
2007                 // we always want the chars and the arrows: the arrows for
2008                 // navigation and the chars because we want Ctrl-C to work even
2009                 // in a read only control
2010                 long lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
2011
2012                 if ( IsEditable() )
2013                 {
2014                     // we may have several different cases:
2015                     // 1. normal: both TAB and ENTER are used for navigation
2016                     // 2. ctrl wants TAB for itself: ENTER is used to pass to
2017                     //    the next control in the dialog
2018                     // 3. ctrl wants ENTER for itself: TAB is used for dialog
2019                     //    navigation
2020                     // 4. ctrl wants both TAB and ENTER: Ctrl-ENTER is used to
2021                     //    go to the next control (we need some way to do it)
2022
2023                     // multiline controls should always get ENTER for themselves
2024                     if ( HasFlag(wxTE_PROCESS_ENTER) || HasFlag(wxTE_MULTILINE) )
2025                         lDlgCode |= DLGC_WANTMESSAGE;
2026
2027                     if ( HasFlag(wxTE_PROCESS_TAB) )
2028                         lDlgCode |= DLGC_WANTTAB;
2029
2030                     lRc |= lDlgCode;
2031                 }
2032                 else // !editable
2033                 {
2034                     // NB: use "=", not "|=" as the base class version returns
2035                     //     the same flags is this state as usual (i.e.
2036                     //     including DLGC_WANTMESSAGE). This is strange (how
2037                     //     does it work in the native Win32 apps?) but for now
2038                     //     live with it.
2039                     lRc = lDlgCode;
2040                 }
2041             }
2042             break;
2043
2044         case WM_CUT:
2045         case WM_COPY:
2046         case WM_PASTE:
2047             if ( HandleClipboardEvent(nMsg) )
2048                 lRc = 0;
2049             break;
2050     }
2051
2052     return lRc;
2053 }
2054
2055 // ----------------------------------------------------------------------------
2056 // text control event processing
2057 // ----------------------------------------------------------------------------
2058
2059 bool wxTextCtrl::SendUpdateEvent()
2060 {
2061     switch ( m_updatesCount )
2062     {
2063         case 0:
2064             // remember that we've got an update
2065             m_updatesCount++;
2066             break;
2067
2068         case 1:
2069             // we had already sent one event since the last control modification
2070             return false;
2071
2072         default:
2073             wxFAIL_MSG( _T("unexpected wxTextCtrl::m_updatesCount value") );
2074             // fall through
2075
2076         case -1:
2077             // we hadn't updated the control ourselves, this event comes from
2078             // the user, don't need to ignore it nor update the count
2079             break;
2080
2081         case -2:
2082             // the control was updated programmatically and we do NOT want to
2083             // send events
2084             return false;
2085     }
2086
2087     wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, GetId());
2088     InitCommandEvent(event);
2089
2090     return ProcessCommand(event);
2091 }
2092
2093 bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
2094 {
2095     switch ( param )
2096     {
2097         case EN_SETFOCUS:
2098         case EN_KILLFOCUS:
2099             {
2100                 wxFocusEvent event(param == EN_KILLFOCUS ? wxEVT_KILL_FOCUS
2101                                                          : wxEVT_SET_FOCUS,
2102                                    m_windowId);
2103                 event.SetEventObject(this);
2104                 GetEventHandler()->ProcessEvent(event);
2105             }
2106             break;
2107
2108         case EN_CHANGE:
2109             SendUpdateEvent();
2110             break;
2111
2112         case EN_MAXTEXT:
2113             // the text size limit has been hit -- try to increase it
2114             if ( !AdjustSpaceLimit() )
2115             {
2116                 wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, m_windowId);
2117                 InitCommandEvent(event);
2118                 event.SetString(GetValue());
2119                 ProcessCommand(event);
2120             }
2121             break;
2122
2123             // the other edit notification messages are not processed
2124         default:
2125             return false;
2126     }
2127
2128     // processed
2129     return true;
2130 }
2131
2132 WXHBRUSH wxTextCtrl::MSWControlColor(WXHDC hDC, WXHWND hWnd)
2133 {
2134     if ( !IsEnabled() && !HasFlag(wxTE_MULTILINE) )
2135         return MSWControlColorDisabled(hDC);
2136
2137     return wxTextCtrlBase::MSWControlColor(hDC, hWnd);
2138 }
2139
2140 bool wxTextCtrl::HasSpaceLimit(unsigned int *len) const
2141 {
2142     // HACK: we try to automatically extend the limit for the amount of text
2143     //       to allow (interactively) entering more than 64Kb of text under
2144     //       Win9x but we shouldn't reset the text limit which was previously
2145     //       set explicitly with SetMaxLength()
2146     //
2147     //       Unfortunately there is no EM_GETLIMITTEXTSETBYUSER and so we don't
2148     //       know the limit we set (if any). We could solve this by storing the
2149     //       limit we set in wxTextCtrl but to save space we prefer to simply
2150     //       test here the actual limit value: we consider that SetMaxLength()
2151     //       can only be called for small values while EN_MAXTEXT is only sent
2152     //       for large values (in practice the default limit seems to be 30000
2153     //       but make it smaller just to be on the safe side)
2154     *len = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
2155     return *len < 10001;
2156
2157 }
2158
2159 bool wxTextCtrl::AdjustSpaceLimit()
2160 {
2161     unsigned int limit;
2162     if ( HasSpaceLimit(&limit) )
2163         return false;
2164
2165     unsigned int len = ::GetWindowTextLength(GetHwnd());
2166     if ( len >= limit )
2167     {
2168         // increment in 32Kb chunks
2169         SetMaxLength(len + 0x8000);
2170     }
2171
2172     // we changed the limit
2173     return true;
2174 }
2175
2176 bool wxTextCtrl::AcceptsFocus() const
2177 {
2178     // we don't want focus if we can't be edited unless we're a multiline
2179     // control because then it might be still nice to get focus from keyboard
2180     // to be able to scroll it without mouse
2181     return (IsEditable() || IsMultiLine()) && wxControl::AcceptsFocus();
2182 }
2183
2184 wxSize wxTextCtrl::DoGetBestSize() const
2185 {
2186     int cx, cy;
2187     wxGetCharSize(GetHWND(), &cx, &cy, GetFont());
2188
2189     int wText = DEFAULT_ITEM_WIDTH;
2190
2191     int hText = cy;
2192     if ( m_windowStyle & wxTE_MULTILINE )
2193     {
2194         hText *= wxMax(wxMin(GetNumberOfLines(), 10), 2);
2195     }
2196     //else: for single line control everything is ok
2197
2198     // we have to add the adjustments for the control height only once, not
2199     // once per line, so do it after multiplication above
2200     hText += EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy) - cy;
2201
2202     return wxSize(wText, hText);
2203 }
2204
2205 // ----------------------------------------------------------------------------
2206 // standard handlers for standard edit menu events
2207 // ----------------------------------------------------------------------------
2208
2209 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
2210 {
2211     Cut();
2212 }
2213
2214 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
2215 {
2216     Copy();
2217 }
2218
2219 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
2220 {
2221     Paste();
2222 }
2223
2224 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
2225 {
2226     Undo();
2227 }
2228
2229 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
2230 {
2231     Redo();
2232 }
2233
2234 void wxTextCtrl::OnDelete(wxCommandEvent& WXUNUSED(event))
2235 {
2236     long from, to;
2237     GetSelection(& from, & to);
2238     if (from != -1 && to != -1)
2239         Remove(from, to);
2240 }
2241
2242 void wxTextCtrl::OnSelectAll(wxCommandEvent& WXUNUSED(event))
2243 {
2244     SetSelection(-1, -1);
2245 }
2246
2247 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
2248 {
2249     event.Enable( CanCut() );
2250 }
2251
2252 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
2253 {
2254     event.Enable( CanCopy() );
2255 }
2256
2257 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
2258 {
2259     event.Enable( CanPaste() );
2260 }
2261
2262 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
2263 {
2264     event.Enable( CanUndo() );
2265 }
2266
2267 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
2268 {
2269     event.Enable( CanRedo() );
2270 }
2271
2272 void wxTextCtrl::OnUpdateDelete(wxUpdateUIEvent& event)
2273 {
2274     long from, to;
2275     GetSelection(& from, & to);
2276     event.Enable(from != -1 && to != -1 && from != to && IsEditable()) ;
2277 }
2278
2279 void wxTextCtrl::OnUpdateSelectAll(wxUpdateUIEvent& event)
2280 {
2281     event.Enable(GetLastPosition() > 0);
2282 }
2283
2284 void wxTextCtrl::OnContextMenu(wxContextMenuEvent& event)
2285 {
2286 #if wxUSE_RICHEDIT
2287     if (IsRich())
2288     {
2289         if (!m_privateContextMenu)
2290         {
2291             m_privateContextMenu = new wxMenu;
2292             m_privateContextMenu->Append(wxID_UNDO, _("&Undo"));
2293             m_privateContextMenu->Append(wxID_REDO, _("&Redo"));
2294             m_privateContextMenu->AppendSeparator();
2295             m_privateContextMenu->Append(wxID_CUT, _("Cu&t"));
2296             m_privateContextMenu->Append(wxID_COPY, _("&Copy"));
2297             m_privateContextMenu->Append(wxID_PASTE, _("&Paste"));
2298             m_privateContextMenu->Append(wxID_CLEAR, _("&Delete"));
2299             m_privateContextMenu->AppendSeparator();
2300             m_privateContextMenu->Append(wxID_SELECTALL, _("Select &All"));
2301         }
2302         PopupMenu(m_privateContextMenu);
2303         return;
2304     }
2305     else
2306 #endif
2307     event.Skip();
2308 }
2309
2310 void wxTextCtrl::OnSetFocus(wxFocusEvent& WXUNUSED(event))
2311 {
2312     // be sure the caret remains invisible if the user had hidden it
2313     if ( !m_isNativeCaretShown )
2314     {
2315         ::HideCaret(GetHwnd());
2316     }
2317 }
2318
2319 // ----------------------------------------------------------------------------
2320 // Default colors for MSW text control
2321 //
2322 // Set default background color to the native white instead of
2323 // the default wxSYS_COLOUR_BTNFACE (is triggered with wxNullColour).
2324 // ----------------------------------------------------------------------------
2325
2326 wxVisualAttributes wxTextCtrl::GetDefaultAttributes() const
2327 {
2328     wxVisualAttributes attrs;
2329     attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
2330     attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
2331     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW); //white
2332
2333     return attrs;
2334 }
2335
2336 // the rest of the file only deals with the rich edit controls
2337 #if wxUSE_RICHEDIT
2338
2339 // ----------------------------------------------------------------------------
2340 // EN_LINK processing
2341 // ----------------------------------------------------------------------------
2342
2343 bool wxTextCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
2344 {
2345     NMHDR *hdr = (NMHDR* )lParam;
2346     switch ( hdr->code )
2347     {
2348        case EN_MSGFILTER:
2349             {
2350                 const MSGFILTER *msgf = (MSGFILTER *)lParam;
2351                 UINT msg = msgf->msg;
2352
2353                 // this is a bit crazy but richedit 1.0 sends us all mouse
2354                 // events _except_ WM_LBUTTONUP (don't ask me why) so we have
2355                 // generate the wxWin events for this message manually
2356                 //
2357                 // NB: in fact, this is still not totally correct as it does
2358                 //     send us WM_LBUTTONUP if the selection was cleared by the
2359                 //     last click -- so currently we get 2 events in this case,
2360                 //     but as I don't see any obvious way to check for this I
2361                 //     leave this code in place because it's still better than
2362                 //     not getting left up events at all
2363                 if ( msg == WM_LBUTTONUP )
2364                 {
2365                     WXUINT flags = msgf->wParam;
2366                     int x = GET_X_LPARAM(msgf->lParam),
2367                         y = GET_Y_LPARAM(msgf->lParam);
2368
2369                     HandleMouseEvent(msg, x, y, flags);
2370                 }
2371             }
2372
2373             // return true to process the event (and false to ignore it)
2374             return true;
2375
2376         case EN_LINK:
2377             {
2378                 const ENLINK *enlink = (ENLINK *)hdr;
2379
2380                 switch ( enlink->msg )
2381                 {
2382                     case WM_SETCURSOR:
2383                         // ok, so it is hardcoded - do we really nee to
2384                         // customize it?
2385                         {
2386                             wxCursor cur(wxCURSOR_HAND);
2387                             ::SetCursor(GetHcursorOf(cur));
2388                             *result = TRUE;
2389                             break;
2390                         }
2391
2392                     case WM_MOUSEMOVE:
2393                     case WM_LBUTTONDOWN:
2394                     case WM_LBUTTONUP:
2395                     case WM_LBUTTONDBLCLK:
2396                     case WM_RBUTTONDOWN:
2397                     case WM_RBUTTONUP:
2398                     case WM_RBUTTONDBLCLK:
2399                         // send a mouse event
2400                         {
2401                             static const wxEventType eventsMouse[] =
2402                             {
2403                                 wxEVT_MOTION,
2404                                 wxEVT_LEFT_DOWN,
2405                                 wxEVT_LEFT_UP,
2406                                 wxEVT_LEFT_DCLICK,
2407                                 wxEVT_RIGHT_DOWN,
2408                                 wxEVT_RIGHT_UP,
2409                                 wxEVT_RIGHT_DCLICK,
2410                             };
2411
2412                             // the event ids are consecutive
2413                             wxMouseEvent
2414                                 evtMouse(eventsMouse[enlink->msg - WM_MOUSEMOVE]);
2415
2416                             InitMouseEvent(evtMouse,
2417                                            GET_X_LPARAM(enlink->lParam),
2418                                            GET_Y_LPARAM(enlink->lParam),
2419                                            enlink->wParam);
2420
2421                             wxTextUrlEvent event(m_windowId, evtMouse,
2422                                                  enlink->chrg.cpMin,
2423                                                  enlink->chrg.cpMax);
2424
2425                             InitCommandEvent(event);
2426
2427                             *result = ProcessCommand(event);
2428                         }
2429                         break;
2430                 }
2431             }
2432             return true;
2433     }
2434
2435     // not processed, leave it to the base class
2436     return wxTextCtrlBase::MSWOnNotify(idCtrl, lParam, result);
2437 }
2438
2439 #if wxUSE_DRAG_AND_DROP
2440
2441 void wxTextCtrl::SetDropTarget(wxDropTarget *dropTarget)
2442 {
2443     if ( m_dropTarget == wxRICHTEXT_DEFAULT_DROPTARGET )
2444     {
2445         // get rid of the built-in drop target
2446         ::RevokeDragDrop(GetHwnd());
2447         m_dropTarget = NULL;
2448     }
2449
2450     wxTextCtrlBase::SetDropTarget(dropTarget);
2451 }
2452
2453 #endif // wxUSE_DRAG_AND_DROP
2454
2455 // ----------------------------------------------------------------------------
2456 // colour setting for the rich edit controls
2457 // ----------------------------------------------------------------------------
2458
2459 bool wxTextCtrl::SetBackgroundColour(const wxColour& colour)
2460 {
2461     if ( !wxTextCtrlBase::SetBackgroundColour(colour) )
2462     {
2463         // colour didn't really change
2464         return false;
2465     }
2466
2467     if ( IsRich() )
2468     {
2469         // rich edit doesn't use WM_CTLCOLOR, hence we need to send
2470         // EM_SETBKGNDCOLOR additionally
2471         ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour));
2472     }
2473
2474     return true;
2475 }
2476
2477 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
2478 {
2479     if ( !wxTextCtrlBase::SetForegroundColour(colour) )
2480     {
2481         // colour didn't really change
2482         return false;
2483     }
2484
2485     if ( IsRich() )
2486     {
2487         // change the colour of everything
2488         CHARFORMAT cf;
2489         wxZeroMemory(cf);
2490         cf.cbSize = sizeof(cf);
2491         cf.dwMask = CFM_COLOR;
2492         cf.crTextColor = wxColourToRGB(colour);
2493         ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf);
2494     }
2495
2496     return true;
2497 }
2498
2499 // ----------------------------------------------------------------------------
2500 // styling support for rich edit controls
2501 // ----------------------------------------------------------------------------
2502
2503 #if wxUSE_RICHEDIT
2504
2505 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
2506 {
2507     if ( !IsRich() )
2508     {
2509         // can't do it with normal text control
2510         return false;
2511     }
2512
2513     // the richedit 1.0 doesn't handle setting background colour, so don't
2514     // even try to do anything if it's the only thing we want to change
2515     if ( m_verRichEdit == 1 && !style.HasFont() && !style.HasTextColour() &&
2516         !style.HasLeftIndent() && !style.HasRightIndent() && !style.HasAlignment() &&
2517         !style.HasTabs() )
2518     {
2519         // nothing to do: return true if there was really nothing to do and
2520         // false if we failed to set bg colour
2521         return !style.HasBackgroundColour();
2522     }
2523
2524     // order the range if needed
2525     if ( start > end )
2526     {
2527         long tmp = start;
2528         start = end;
2529         end = tmp;
2530     }
2531
2532     // we can only change the format of the selection, so select the range we
2533     // want and restore the old selection later
2534     long startOld, endOld;
2535     GetSelection(&startOld, &endOld);
2536
2537     // but do we really have to change the selection?
2538     bool changeSel = start != startOld || end != endOld;
2539
2540     if ( changeSel )
2541     {
2542         DoSetSelection(start, end, false /* don't scroll caret into view */);
2543     }
2544
2545     // initialize CHARFORMAT struct
2546 #if wxUSE_RICHEDIT2
2547     CHARFORMAT2 cf;
2548 #else
2549     CHARFORMAT cf;
2550 #endif
2551
2552     wxZeroMemory(cf);
2553
2554     // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2555     // CHARFORMAT in that case
2556 #if wxUSE_RICHEDIT2
2557     if ( m_verRichEdit == 1 )
2558     {
2559         // this is the only thing the control is going to grok
2560         cf.cbSize = sizeof(CHARFORMAT);
2561     }
2562     else
2563 #endif
2564     {
2565         // CHARFORMAT or CHARFORMAT2
2566         cf.cbSize = sizeof(cf);
2567     }
2568
2569     if ( style.HasFont() )
2570     {
2571         // VZ: CFM_CHARSET doesn't seem to do anything at all in RichEdit 2.0
2572         //     but using it doesn't seem to hurt neither so leaving it for now
2573
2574         cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET |
2575                      CFM_ITALIC | CFM_BOLD | CFM_UNDERLINE;
2576
2577         // fill in data from LOGFONT but recalculate lfHeight because we need
2578         // the real height in twips and not the negative number which
2579         // wxFillLogFont() returns (this is correct in general and works with
2580         // the Windows font mapper, but not here)
2581         LOGFONT lf;
2582         wxFillLogFont(&lf, &style.GetFont());
2583         cf.yHeight = 20*style.GetFont().GetPointSize(); // 1 pt = 20 twips
2584         cf.bCharSet = lf.lfCharSet;
2585         cf.bPitchAndFamily = lf.lfPitchAndFamily;
2586         wxStrncpy( cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName) );
2587
2588         // also deal with underline/italic/bold attributes: note that we must
2589         // always set CFM_ITALIC &c bits in dwMask, even if we don't set the
2590         // style to allow clearing it
2591         if ( lf.lfItalic )
2592         {
2593             cf.dwEffects |= CFE_ITALIC;
2594         }
2595
2596         if ( lf.lfWeight == FW_BOLD )
2597         {
2598             cf.dwEffects |= CFE_BOLD;
2599         }
2600
2601         if ( lf.lfUnderline )
2602         {
2603             cf.dwEffects |= CFE_UNDERLINE;
2604         }
2605
2606         // strikeout fonts are not supported by wxWidgets
2607     }
2608
2609     if ( style.HasTextColour() )
2610     {
2611         cf.dwMask |= CFM_COLOR;
2612         cf.crTextColor = wxColourToRGB(style.GetTextColour());
2613     }
2614
2615 #if wxUSE_RICHEDIT2
2616     if ( m_verRichEdit != 1 && style.HasBackgroundColour() )
2617     {
2618         cf.dwMask |= CFM_BACKCOLOR;
2619         cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
2620     }
2621 #endif // wxUSE_RICHEDIT2
2622
2623     // do format the selection
2624     bool ok = ::SendMessage(GetHwnd(), EM_SETCHARFORMAT,
2625                             SCF_SELECTION, (LPARAM)&cf) != 0;
2626     if ( !ok )
2627     {
2628         wxLogDebug(_T("SendMessage(EM_SETCHARFORMAT, SCF_SELECTION) failed"));
2629     }
2630
2631     // now do the paragraph formatting
2632     PARAFORMAT2 pf;
2633     wxZeroMemory(pf);
2634     // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2635     // PARAFORMAT in that case
2636 #if wxUSE_RICHEDIT2
2637     if ( m_verRichEdit == 1 )
2638     {
2639         // this is the only thing the control is going to grok
2640         pf.cbSize = sizeof(PARAFORMAT);
2641     }
2642     else
2643 #endif
2644     {
2645         // PARAFORMAT or PARAFORMAT2
2646         pf.cbSize = sizeof(pf);
2647     }
2648
2649     if (style.HasAlignment())
2650     {
2651         pf.dwMask |= PFM_ALIGNMENT;
2652         if (style.GetAlignment() == wxTEXT_ALIGNMENT_RIGHT)
2653             pf.wAlignment = PFA_RIGHT;
2654         else if (style.GetAlignment() == wxTEXT_ALIGNMENT_CENTRE)
2655             pf.wAlignment = PFA_CENTER;
2656         else if (style.GetAlignment() == wxTEXT_ALIGNMENT_JUSTIFIED)
2657             pf.wAlignment = PFA_JUSTIFY;
2658         else
2659             pf.wAlignment = PFA_LEFT;
2660     }
2661
2662     if (style.HasLeftIndent())
2663     {
2664         pf.dwMask |= PFM_STARTINDENT | PFM_OFFSET;
2665
2666         // Convert from 1/10 mm to TWIPS
2667         pf.dxStartIndent = (int) (((double) style.GetLeftIndent()) * mm2twips / 10.0) ;
2668         pf.dxOffset = (int) (((double) style.GetLeftSubIndent()) * mm2twips / 10.0) ;
2669     }
2670
2671     if (style.HasRightIndent())
2672     {
2673         pf.dwMask |= PFM_RIGHTINDENT;
2674
2675         // Convert from 1/10 mm to TWIPS
2676         pf.dxRightIndent = (int) (((double) style.GetRightIndent()) * mm2twips / 10.0) ;
2677     }
2678
2679     if (style.HasTabs())
2680     {
2681         pf.dwMask |= PFM_TABSTOPS;
2682
2683         const wxArrayInt& tabs = style.GetTabs();
2684
2685         pf.cTabCount = (SHORT)wxMin(tabs.GetCount(), MAX_TAB_STOPS);
2686         size_t i;
2687         for (i = 0; i < (size_t) pf.cTabCount; i++)
2688         {
2689             // Convert from 1/10 mm to TWIPS
2690             pf.rgxTabs[i] = (int) (((double) tabs[i]) * mm2twips / 10.0) ;
2691         }
2692     }
2693
2694 #if wxUSE_RICHEDIT2
2695     if ( m_verRichEdit > 1 )
2696     {
2697         if ( wxTheApp->GetLayoutDirection() == wxLayout_RightToLeft )
2698         {
2699             // Use RTL paragraphs in RTL mode to get proper layout
2700             pf.dwMask |= PFM_RTLPARA;
2701             pf.wEffects |= PFE_RTLPARA;
2702         }
2703     }
2704 #endif // wxUSE_RICHEDIT2
2705
2706     if ( pf.dwMask )
2707     {
2708         // do format the selection
2709         bool ok = ::SendMessage(GetHwnd(), EM_SETPARAFORMAT,
2710                                 0, (LPARAM) &pf) != 0;
2711         if ( !ok )
2712         {
2713             wxLogDebug(_T("SendMessage(EM_SETPARAFORMAT, 0) failed"));
2714         }
2715     }
2716
2717     if ( changeSel )
2718     {
2719         // restore the original selection
2720         DoSetSelection(startOld, endOld, false);
2721     }
2722
2723     return ok;
2724 }
2725
2726 bool wxTextCtrl::SetDefaultStyle(const wxTextAttr& style)
2727 {
2728     if ( !wxTextCtrlBase::SetDefaultStyle(style) )
2729         return false;
2730
2731     if ( IsEditable() )
2732     {
2733         // we have to do this or the style wouldn't apply for the text typed by
2734         // the user
2735         wxTextPos posLast = GetLastPosition();
2736         SetStyle(posLast, posLast, m_defaultStyle);
2737     }
2738
2739     return true;
2740 }
2741
2742 bool wxTextCtrl::GetStyle(long position, wxTextAttr& style)
2743 {
2744     if ( !IsRich() )
2745     {
2746         // can't do it with normal text control
2747         return false;
2748     }
2749
2750     // initialize CHARFORMAT struct
2751 #if wxUSE_RICHEDIT2
2752     CHARFORMAT2 cf;
2753 #else
2754     CHARFORMAT cf;
2755 #endif
2756
2757     wxZeroMemory(cf);
2758
2759     // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2760     // CHARFORMAT in that case
2761 #if wxUSE_RICHEDIT2
2762     if ( m_verRichEdit == 1 )
2763     {
2764         // this is the only thing the control is going to grok
2765         cf.cbSize = sizeof(CHARFORMAT);
2766     }
2767     else
2768 #endif
2769     {
2770         // CHARFORMAT or CHARFORMAT2
2771         cf.cbSize = sizeof(cf);
2772     }
2773     // we can only change the format of the selection, so select the range we
2774     // want and restore the old selection later
2775     long startOld, endOld;
2776     GetSelection(&startOld, &endOld);
2777
2778     // but do we really have to change the selection?
2779     bool changeSel = position != startOld || position != endOld;
2780
2781     if ( changeSel )
2782     {
2783         DoSetSelection(position, position+1, false /* don't scroll caret into view */);
2784     }
2785
2786     // get the selection formatting
2787     (void) ::SendMessage(GetHwnd(), EM_GETCHARFORMAT,
2788                             SCF_SELECTION, (LPARAM)&cf) ;
2789
2790
2791     LOGFONT lf;
2792     lf.lfHeight = cf.yHeight;
2793     lf.lfWidth = 0;
2794     lf.lfCharSet = ANSI_CHARSET; // FIXME: how to get correct charset?
2795     lf.lfClipPrecision = 0;
2796     lf.lfEscapement = 0;
2797     wxStrcpy(lf.lfFaceName, cf.szFaceName);
2798
2799     //NOTE:  we _MUST_ set each of these values to _something_ since we
2800     //do not call wxZeroMemory on the LOGFONT lf
2801     if (cf.dwEffects & CFE_ITALIC)
2802         lf.lfItalic = TRUE;
2803     else
2804         lf.lfItalic = FALSE;
2805
2806     lf.lfOrientation = 0;
2807     lf.lfPitchAndFamily = cf.bPitchAndFamily;
2808     lf.lfQuality = 0;
2809
2810     if (cf.dwEffects & CFE_STRIKEOUT)
2811         lf.lfStrikeOut = TRUE;
2812     else
2813         lf.lfStrikeOut = FALSE;
2814
2815     if (cf.dwEffects & CFE_UNDERLINE)
2816         lf.lfUnderline = TRUE;
2817     else
2818         lf.lfUnderline = FALSE;
2819
2820     if (cf.dwEffects & CFE_BOLD)
2821         lf.lfWeight = FW_BOLD;
2822     else
2823         lf.lfWeight = FW_NORMAL;
2824
2825     wxFont font = wxCreateFontFromLogFont(& lf);
2826     if (font.Ok())
2827     {
2828         style.SetFont(font);
2829     }
2830     style.SetTextColour(wxColour(cf.crTextColor));
2831
2832 #if wxUSE_RICHEDIT2
2833     if ( m_verRichEdit != 1 )
2834     {
2835         // cf.dwMask |= CFM_BACKCOLOR;
2836         style.SetBackgroundColour(wxColour(cf.crBackColor));
2837     }
2838 #endif // wxUSE_RICHEDIT2
2839
2840     // now get the paragraph formatting
2841     PARAFORMAT2 pf;
2842     wxZeroMemory(pf);
2843     // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2844     // PARAFORMAT in that case
2845 #if wxUSE_RICHEDIT2
2846     if ( m_verRichEdit == 1 )
2847     {
2848         // this is the only thing the control is going to grok
2849         pf.cbSize = sizeof(PARAFORMAT);
2850     }
2851     else
2852 #endif
2853     {
2854         // PARAFORMAT or PARAFORMAT2
2855         pf.cbSize = sizeof(pf);
2856     }
2857
2858     // do format the selection
2859     (void) ::SendMessage(GetHwnd(), EM_GETPARAFORMAT, 0, (LPARAM) &pf) ;
2860
2861     style.SetLeftIndent( (int) ((double) pf.dxStartIndent * twips2mm * 10.0), (int) ((double) pf.dxOffset * twips2mm * 10.0) );
2862     style.SetRightIndent( (int) ((double) pf.dxRightIndent * twips2mm * 10.0) );
2863
2864     if (pf.wAlignment == PFA_CENTER)
2865         style.SetAlignment(wxTEXT_ALIGNMENT_CENTRE);
2866     else if (pf.wAlignment == PFA_RIGHT)
2867         style.SetAlignment(wxTEXT_ALIGNMENT_RIGHT);
2868     else if (pf.wAlignment == PFA_JUSTIFY)
2869         style.SetAlignment(wxTEXT_ALIGNMENT_JUSTIFIED);
2870     else
2871         style.SetAlignment(wxTEXT_ALIGNMENT_LEFT);
2872
2873     wxArrayInt tabStops;
2874     size_t i;
2875     for (i = 0; i < (size_t) pf.cTabCount; i++)
2876     {
2877         tabStops.Add( (int) ((double) (pf.rgxTabs[i] & 0xFFFF) * twips2mm * 10.0) );
2878     }
2879
2880     if ( changeSel )
2881     {
2882         // restore the original selection
2883         DoSetSelection(startOld, endOld, false);
2884     }
2885
2886     return true;
2887 }
2888
2889 #endif
2890
2891 // ----------------------------------------------------------------------------
2892 // wxRichEditModule
2893 // ----------------------------------------------------------------------------
2894
2895 static const HINSTANCE INVALID_HINSTANCE = (HINSTANCE)-1;
2896
2897 bool wxRichEditModule::OnInit()
2898 {
2899     // don't do anything - we will load it when needed
2900     return true;
2901 }
2902
2903 void wxRichEditModule::OnExit()
2904 {
2905     for ( size_t i = 0; i < WXSIZEOF(ms_hRichEdit); i++ )
2906     {
2907         if ( ms_hRichEdit[i] && ms_hRichEdit[i] != INVALID_HINSTANCE )
2908         {
2909             ::FreeLibrary(ms_hRichEdit[i]);
2910             ms_hRichEdit[i] = NULL;
2911         }
2912     }
2913 #if wxUSE_INKEDIT
2914     if (ms_inkEditLib.IsLoaded())
2915         ms_inkEditLib.Unload();
2916 #endif
2917 }
2918
2919 /* static */
2920 bool wxRichEditModule::Load(Version version)
2921 {
2922     if ( ms_hRichEdit[version] == INVALID_HINSTANCE )
2923     {
2924         // we had already tried to load it and failed
2925         return false;
2926     }
2927
2928     if ( ms_hRichEdit[version] )
2929     {
2930         // we've already got this one
2931         return true;
2932     }
2933
2934     static const wxChar *dllnames[] =
2935     {
2936         _T("riched32"),
2937         _T("riched20"),
2938         _T("msftedit"),
2939     };
2940
2941     wxCOMPILE_TIME_ASSERT( WXSIZEOF(dllnames) == Version_Max,
2942                             RichEditDllNamesVersionsMismatch );
2943
2944     ms_hRichEdit[version] = ::LoadLibrary(dllnames[version]);
2945
2946     if ( !ms_hRichEdit[version] )
2947     {
2948         ms_hRichEdit[version] = INVALID_HINSTANCE;
2949
2950         return false;
2951     }
2952
2953     return true;
2954 }
2955
2956 #if wxUSE_INKEDIT
2957 // load the InkEdit library
2958 bool wxRichEditModule::LoadInkEdit()
2959 {
2960     static wxDynamicLibrary ms_inkEditLib;
2961     static bool             ms_inkEditLibLoadAttemped;
2962     if (ms_inkEditLibLoadAttemped)
2963         ms_inkEditLib.IsLoaded();
2964
2965     ms_inkEditLibLoadAttemped = true;
2966
2967     wxLogNull logNull;
2968     return ms_inkEditLib.Load(wxT("inked"));
2969 }
2970 #endif
2971
2972
2973 #endif // wxUSE_RICHEDIT
2974
2975 #endif // wxUSE_TEXTCTRL && !(__SMARTPHONE__ && __WXWINCE__)