src/msw/textctrl.cpp

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