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 (len == wxCONV_FAILED)
 978         return false;
 979
 980 #if wxUSE_WCHAR_T
 981     wxWCharBuffer wchBuf(len);
 982     wchar_t *wpc = wchBuf.data();
 983 #else
 984     wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
 985     wchar_t *wpc = wchBuf;
 986 #endif
 987
 988     conv.MB2WC(wpc, value.mb_str(), value.length());
 989 #endif // wxUSE_UNICODE_MSLU
 990
 991     // finally, stream it in the control
 992     EDITSTREAM eds;
 993     wxZeroMemory(eds);
 994     eds.dwCookie = (DWORD)&wpc;
 995     // the cast below is needed for broken (very) old mingw32 headers
 996     eds.pfnCallback = (EDITSTREAMCALLBACK)wxRichEditStreamIn;
 997
 998     // same problem as in DoWriteText(): we can get multiple events here
 999     UpdatesCountFilter ucf(m_updatesCount);
1000
1001     ::SendMessage(GetHwnd(), EM_STREAMIN,
1002                   SF_TEXT |
1003                   SF_UNICODE |
1004                   (selectionOnly ? SFF_SELECTION : 0),
1005                   (LPARAM)&eds);
1006
1007     // It's okay for EN_UPDATE to not be sent if the selection is empty and
1008     // the text is empty, otherwise warn the programmer about it.
1009     wxASSERT_MSG( ucf.GotUpdate() || ( !HasSelection() && value.empty() ),
1010                   _T("EM_STREAMIN didn't send EN_UPDATE?") );
1011
1012     if ( eds.dwError )
1013     {
1014         wxLogLastError(_T("EM_STREAMIN"));
1015     }
1016
1017 #if !wxUSE_WCHAR_T
1018     free(wchBuf);
1019 #endif // !wxUSE_WCHAR_T
1020
1021     return true;
1022 }
1023
1024 #if !wxUSE_UNICODE_MSLU
1025
1026 wxString
1027 wxTextCtrl::StreamOut(wxFontEncoding encoding, bool selectionOnly) const
1028 {
1029     wxString out;
1030
1031     const int len = GetWindowTextLength(GetHwnd());
1032
1033 #if wxUSE_WCHAR_T
1034     wxWCharBuffer wchBuf(len);
1035     wchar_t *wpc = wchBuf.data();
1036 #else
1037     wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
1038     wchar_t *wpc = wchBuf;
1039 #endif
1040
1041     wxStreamOutData data;
1042     data.wpc = wpc;
1043     data.len = len;
1044
1045     EDITSTREAM eds;
1046     wxZeroMemory(eds);
1047     eds.dwCookie = (DWORD)&data;
1048     eds.pfnCallback = wxRichEditStreamOut;
1049
1050     ::SendMessage
1051       (
1052         GetHwnd(),
1053         EM_STREAMOUT,
1054         SF_TEXT | SF_UNICODE | (selectionOnly ? SFF_SELECTION : 0),
1055         (LPARAM)&eds
1056       );
1057
1058     if ( eds.dwError )
1059     {
1060         wxLogLastError(_T("EM_STREAMOUT"));
1061     }
1062     else // streamed out ok
1063     {
1064         // NUL-terminate the string because its length could have been
1065         // decreased by wxRichEditStreamOut
1066         *(wchBuf.data() + data.len) = L'\0';
1067
1068         // now convert to the given encoding (this is a possibly lossful
1069         // conversion but what else can we do)
1070         wxCSConv conv(encoding);
1071         size_t lenNeeded = conv.WC2MB(NULL, wchBuf, 0);
1072
1073         if ( lenNeeded != wxCONV_FAILED && lenNeeded++ )
1074         {
1075             conv.WC2MB(wxStringBuffer(out, lenNeeded), wchBuf, lenNeeded);
1076         }
1077     }
1078
1079 #if !wxUSE_WCHAR_T
1080     free(wchBuf);
1081 #endif // !wxUSE_WCHAR_T
1082
1083     return out;
1084 }
1085
1086 #endif // !wxUSE_UNICODE_MSLU
1087
1088 #endif // wxUSE_RICHEDIT
1089
1090 void wxTextCtrl::WriteText(const wxString& value)
1091 {
1092     DoWriteText(value);
1093 }
1094
1095 void wxTextCtrl::DoWriteText(const wxString& value, int flags)
1096 {
1097     bool selectionOnly = (flags & SetValue_SelectionOnly) != 0;
1098     wxString valueDos;
1099     if ( m_windowStyle & wxTE_MULTILINE )
1100         valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
1101     else
1102         valueDos = value;
1103
1104 #if wxUSE_RICHEDIT
1105     // there are several complications with the rich edit controls here
1106     bool done = false;
1107     if ( IsRich() )
1108     {
1109         // first, ensure that the new text will be in the default style
1110         if ( !m_defaultStyle.IsDefault() )
1111         {
1112             long start, end;
1113             GetSelection(&start, &end);
1114             SetStyle(start, end, m_defaultStyle);
1115         }
1116
1117 #if wxUSE_UNICODE_MSLU
1118         // RichEdit doesn't have Unicode version of EM_REPLACESEL on Win9x,
1119         // but EM_STREAMIN works
1120         if ( wxUsingUnicowsDll() && GetRichVersion() > 1 )
1121         {
1122            done = StreamIn(valueDos, wxFONTENCODING_SYSTEM, selectionOnly);
1123         }
1124 #endif // wxUSE_UNICODE_MSLU
1125
1126 #if !wxUSE_UNICODE
1127         // next check if the text we're inserting must be shown in a non
1128         // default charset -- this only works for RichEdit > 1.0
1129         if ( GetRichVersion() > 1 )
1130         {
1131             wxFont font = m_defaultStyle.GetFont();
1132             if ( !font.Ok() )
1133                 font = GetFont();
1134
1135             if ( font.Ok() )
1136             {
1137                wxFontEncoding encoding = font.GetEncoding();
1138                if ( encoding != wxFONTENCODING_SYSTEM )
1139                {
1140                    // we have to use EM_STREAMIN to force richedit control 2.0+
1141                    // to show any text in the non default charset -- otherwise
1142                    // it thinks it knows better than we do and always shows it
1143                    // in the default one
1144                    done = StreamIn(valueDos, encoding, selectionOnly);
1145                }
1146             }
1147         }
1148 #endif // !wxUSE_UNICODE
1149     }
1150
1151     if ( !done )
1152 #endif // wxUSE_RICHEDIT
1153     {
1154         // in some cases we get 2 EN_CHANGE notifications after the SendMessage
1155         // call (this happens for plain EDITs with EM_REPLACESEL and under some
1156         // -- undetermined -- conditions with rich edit) and sometimes we don't
1157         // get any events at all (plain EDIT with WM_SETTEXT), so ensure that
1158         // we generate exactly one of them by ignoring all but the first one in
1159         // SendUpdateEvent() and generating one ourselves if we hadn't got any
1160         // notifications from Windows
1161         if ( !(flags & SetValue_SendEvent) )
1162             m_updatesCount = -2;        // suppress any update event
1163
1164         UpdatesCountFilter ucf(m_updatesCount);
1165
1166         ::SendMessage(GetHwnd(), selectionOnly ? EM_REPLACESEL : WM_SETTEXT,
1167                       // EM_REPLACESEL takes 1 to indicate the operation should be redoable
1168                       selectionOnly ? 1 : 0, (LPARAM)valueDos.wx_str());
1169
1170         if ( !ucf.GotUpdate() && (flags & SetValue_SendEvent) )
1171         {
1172             SendUpdateEvent();
1173         }
1174     }
1175 }
1176
1177 void wxTextCtrl::AppendText(const wxString& text)
1178 {
1179     wxTextEntry::AppendText(text);
1180
1181 #if wxUSE_RICHEDIT
1182     // don't do this if we're frozen, saves some time
1183     if ( !IsFrozen() && IsMultiLine() && GetRichVersion() > 1 )
1184     {
1185         // setting the caret to the end and showing it simply doesn't work for
1186         // RichEdit 2.0 -- force it to still do what we want
1187         ::SendMessage(GetHwnd(), EM_LINESCROLL, 0, GetNumberOfLines());
1188     }
1189 #endif // wxUSE_RICHEDIT
1190 }
1191
1192 void wxTextCtrl::Clear()
1193 {
1194     ::SetWindowText(GetHwnd(), wxEmptyString);
1195
1196     if ( IsMultiLine() && !IsRich() )
1197     {
1198         // rich edit controls send EN_UPDATE from WM_SETTEXT handler themselves
1199         // but the normal ones don't -- make Clear() behaviour consistent by
1200         // always sending this event
1201         SendUpdateEvent();
1202     }
1203 }
1204
1205 #ifdef __WIN32__
1206
1207 bool wxTextCtrl::EmulateKeyPress(const wxKeyEvent& event)
1208 {
1209     SetFocus();
1210
1211     size_t lenOld = GetValue().length();
1212
1213     wxUint32 code = event.GetRawKeyCode();
1214     ::keybd_event((BYTE)code, 0, 0 /* key press */, 0);
1215     ::keybd_event((BYTE)code, 0, KEYEVENTF_KEYUP, 0);
1216
1217     // assume that any alphanumeric key changes the total number of characters
1218     // in the control - this should work in 99% of cases
1219     return GetValue().length() != lenOld;
1220 }
1221
1222 #endif // __WIN32__
1223
1224 // ----------------------------------------------------------------------------
1225 // Accessors
1226 // ----------------------------------------------------------------------------
1227
1228 void wxTextCtrl::SetInsertionPointEnd()
1229 {
1230     // we must not do anything if the caret is already there because calling
1231     // SetInsertionPoint() thaws the controls if Freeze() had been called even
1232     // if it doesn't actually move the caret anywhere and so the simple fact of
1233     // doing it results in horrible flicker when appending big amounts of text
1234     // to the control in a few chunks (see DoAddText() test in the text sample)
1235     const wxTextPos lastPosition = GetLastPosition();
1236     if ( GetInsertionPoint() == lastPosition )
1237     {
1238         return;
1239     }
1240
1241     SetInsertionPoint(lastPosition);
1242 }
1243
1244 long wxTextCtrl::GetInsertionPoint() const
1245 {
1246 #if wxUSE_RICHEDIT
1247     if ( IsRich() )
1248     {
1249         CHARRANGE range;
1250         range.cpMin = 0;
1251         range.cpMax = 0;
1252         ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
1253         return range.cpMin;
1254     }
1255 #endif // wxUSE_RICHEDIT
1256
1257     return wxTextEntry::GetInsertionPoint();
1258 }
1259
1260 wxTextPos wxTextCtrl::GetLastPosition() const
1261 {
1262     if ( IsMultiLine() )
1263     {
1264         int numLines = GetNumberOfLines();
1265         long posStartLastLine = XYToPosition(0, numLines - 1);
1266
1267         long lenLastLine = GetLengthOfLineContainingPos(posStartLastLine);
1268
1269         return posStartLastLine + lenLastLine;
1270     }
1271
1272     return wxTextEntry::GetLastPosition();
1273 }
1274
1275 // If the return values from and to are the same, there is no
1276 // selection.
1277 void wxTextCtrl::GetSelection(long *from, long *to) const
1278 {
1279 #if wxUSE_RICHEDIT
1280     if ( IsRich() )
1281     {
1282         CHARRANGE charRange;
1283         ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &charRange);
1284
1285         *from = charRange.cpMin;
1286         *to = charRange.cpMax;
1287     }
1288     else
1289 #endif // !wxUSE_RICHEDIT
1290     {
1291         wxTextEntry::GetSelection(from, to);
1292     }
1293 }
1294
1295 // ----------------------------------------------------------------------------
1296 // selection
1297 // ----------------------------------------------------------------------------
1298
1299 void wxTextCtrl::DoSetSelection(long from, long to, int flags)
1300 {
1301     HWND hWnd = GetHwnd();
1302
1303 #if wxUSE_RICHEDIT
1304     if ( IsRich() )
1305     {
1306         CHARRANGE range;
1307         range.cpMin = from;
1308         range.cpMax = to;
1309         ::SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM)&range);
1310     }
1311     else
1312 #endif // wxUSE_RICHEDIT
1313     {
1314         wxTextEntry::DoSetSelection(from, to, flags);
1315     }
1316
1317     if ( (flags & SetSel_Scroll) && !IsFrozen() )
1318     {
1319 #if wxUSE_RICHEDIT
1320         // richedit 3.0 (i.e. the version living in riched20.dll distributed
1321         // with Windows 2000 and beyond) doesn't honour EM_SCROLLCARET when
1322         // emulating richedit 2.0 unless the control has focus or ECO_NOHIDESEL
1323         // option is set (but it does work ok in richedit 1.0 mode...)
1324         //
1325         // so to make it work we either need to give focus to it here which
1326         // will probably create many problems (dummy focus events; window
1327         // containing the text control being brought to foreground
1328         // unexpectedly; ...) or to temporarily set ECO_NOHIDESEL which may
1329         // create other problems too -- and in fact it does because if we turn
1330         // on/off this style while appending the text to the control, the
1331         // vertical scrollbar never appears in it even if we append tons of
1332         // text and to work around this the only solution I found was to use
1333         // ES_DISABLENOSCROLL
1334         //
1335         // this is very ugly but I don't see any other way to make this work
1336         long style = 0;
1337         if ( GetRichVersion() > 1 )
1338         {
1339             if ( !HasFlag(wxTE_NOHIDESEL) )
1340             {
1341                 // setting ECO_NOHIDESEL also sets WS_VISIBLE and possibly
1342                 // others, remember the style so we can reset it later if needed
1343                 style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1344                 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1345                               ECOOP_OR, ECO_NOHIDESEL);
1346             }
1347             //else: everything is already ok
1348         }
1349 #endif // wxUSE_RICHEDIT
1350
1351         ::SendMessage(hWnd, EM_SCROLLCARET, 0, (LPARAM)0);
1352
1353 #if wxUSE_RICHEDIT
1354         // restore ECO_NOHIDESEL if we changed it
1355         if ( GetRichVersion() > 1 && !HasFlag(wxTE_NOHIDESEL) )
1356         {
1357             ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1358                           ECOOP_AND, ~ECO_NOHIDESEL);
1359             if ( style != ::GetWindowLong(GetHwnd(), GWL_STYLE) )
1360                 ::SetWindowLong(GetHwnd(), GWL_STYLE, style);
1361         }
1362 #endif // wxUSE_RICHEDIT
1363     }
1364 }
1365
1366 // ----------------------------------------------------------------------------
1367 // Working with files
1368 // ----------------------------------------------------------------------------
1369
1370 bool wxTextCtrl::DoLoadFile(const wxString& file, int fileType)
1371 {
1372     if ( wxTextCtrlBase::DoLoadFile(file, fileType) )
1373     {
1374         // update the size limit if needed
1375         AdjustSpaceLimit();
1376
1377         return true;
1378     }
1379
1380     return false;
1381 }
1382
1383 // ----------------------------------------------------------------------------
1384 // dirty status
1385 // ----------------------------------------------------------------------------
1386
1387 bool wxTextCtrl::IsModified() const
1388 {
1389     return ::SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0;
1390 }
1391
1392 void wxTextCtrl::MarkDirty()
1393 {
1394     ::SendMessage(GetHwnd(), EM_SETMODIFY, TRUE, 0);
1395 }
1396
1397 void wxTextCtrl::DiscardEdits()
1398 {
1399     ::SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0);
1400 }
1401
1402 // ----------------------------------------------------------------------------
1403 // Positions <-> coords
1404 // ----------------------------------------------------------------------------
1405
1406 int wxTextCtrl::GetNumberOfLines() const
1407 {
1408     return (int)::SendMessage(GetHwnd(), EM_GETLINECOUNT, 0, 0);
1409 }
1410
1411 long wxTextCtrl::XYToPosition(long x, long y) const
1412 {
1413     // This gets the char index for the _beginning_ of this line
1414     long charIndex = ::SendMessage(GetHwnd(), EM_LINEINDEX, y, 0);
1415
1416     return charIndex + x;
1417 }
1418
1419 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
1420 {
1421     HWND hWnd = GetHwnd();
1422
1423     // This gets the line number containing the character
1424     long lineNo;
1425 #if wxUSE_RICHEDIT
1426     if ( IsRich() )
1427     {
1428         lineNo = ::SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, pos);
1429     }
1430     else
1431 #endif // wxUSE_RICHEDIT
1432     {
1433         lineNo = ::SendMessage(hWnd, EM_LINEFROMCHAR, pos, 0);
1434     }
1435
1436     if ( lineNo == -1 )
1437     {
1438         // no such line
1439         return false;
1440     }
1441
1442     // This gets the char index for the _beginning_ of this line
1443     long charIndex = ::SendMessage(hWnd, EM_LINEINDEX, lineNo, 0);
1444     if ( charIndex == -1 )
1445     {
1446         return false;
1447     }
1448
1449     // The X position must therefore be the different between pos and charIndex
1450     if ( x )
1451         *x = pos - charIndex;
1452     if ( y )
1453         *y = lineNo;
1454
1455     return true;
1456 }
1457
1458 wxTextCtrlHitTestResult
1459 wxTextCtrl::HitTest(const wxPoint& pt, long *posOut) const
1460 {
1461     // first get the position from Windows
1462     LPARAM lParam;
1463
1464 #if wxUSE_RICHEDIT
1465     POINTL ptl;
1466     if ( IsRich() )
1467     {
1468         // for rich edit controls the position is passed iva the struct fields
1469         ptl.x = pt.x;
1470         ptl.y = pt.y;
1471         lParam = (LPARAM)&ptl;
1472     }
1473     else
1474 #endif // wxUSE_RICHEDIT
1475     {
1476         // for the plain ones, we are limited to 16 bit positions which are
1477         // combined in a single 32 bit value
1478         lParam = MAKELPARAM(pt.x, pt.y);
1479     }
1480
1481     LRESULT pos = ::SendMessage(GetHwnd(), EM_CHARFROMPOS, 0, lParam);
1482
1483     if ( pos == -1 )
1484     {
1485         // this seems to indicate an error...
1486         return wxTE_HT_UNKNOWN;
1487     }
1488
1489 #if wxUSE_RICHEDIT
1490     if ( !IsRich() )
1491 #endif // wxUSE_RICHEDIT
1492     {
1493         // for plain EDIT controls the higher word contains something else
1494         pos = LOWORD(pos);
1495     }
1496
1497
1498     // next determine where it is relatively to our point: EM_CHARFROMPOS
1499     // always returns the closest character but we need to be more precise, so
1500     // double check that we really are where it pretends
1501     POINTL ptReal;
1502
1503 #if wxUSE_RICHEDIT
1504     // FIXME: we need to distinguish between richedit 2 and 3 here somehow but
1505     //        we don't know how to do it
1506     if ( IsRich() )
1507     {
1508         ::SendMessage(GetHwnd(), EM_POSFROMCHAR, (WPARAM)&ptReal, pos);
1509     }
1510     else
1511 #endif // wxUSE_RICHEDIT
1512     {
1513         LRESULT lRc = ::SendMessage(GetHwnd(), EM_POSFROMCHAR, pos, 0);
1514
1515         if ( lRc == -1 )
1516         {
1517             // this is apparently returned when pos corresponds to the last
1518             // position
1519             ptReal.x =
1520             ptReal.y = 0;
1521         }
1522         else
1523         {
1524             ptReal.x = LOWORD(lRc);
1525             ptReal.y = HIWORD(lRc);
1526         }
1527     }
1528
1529     wxTextCtrlHitTestResult rc;
1530
1531     if ( pt.y > ptReal.y + GetCharHeight() )
1532         rc = wxTE_HT_BELOW;
1533     else if ( pt.x > ptReal.x + GetCharWidth() )
1534         rc = wxTE_HT_BEYOND;
1535     else
1536         rc = wxTE_HT_ON_TEXT;
1537
1538     if ( posOut )
1539         *posOut = pos;
1540
1541     return rc;
1542 }
1543
1544 // ----------------------------------------------------------------------------
1545 //
1546 // ----------------------------------------------------------------------------
1547
1548 void wxTextCtrl::ShowPosition(long pos)
1549 {
1550     HWND hWnd = GetHwnd();
1551
1552     // To scroll to a position, we pass the number of lines and characters
1553     // to scroll *by*. This means that we need to:
1554     // (1) Find the line position of the current line.
1555     // (2) Find the line position of pos.
1556     // (3) Scroll by (pos - current).
1557     // For now, ignore the horizontal scrolling.
1558
1559     // Is this where scrolling is relative to - the line containing the caret?
1560     // Or is the first visible line??? Try first visible line.
1561 //    int currentLineLineNo1 = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, -1, 0L);
1562
1563     int currentLineLineNo = (int)::SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, 0, 0);
1564
1565     int specifiedLineLineNo = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, pos, 0);
1566
1567     int linesToScroll = specifiedLineLineNo - currentLineLineNo;
1568
1569     if (linesToScroll != 0)
1570       ::SendMessage(hWnd, EM_LINESCROLL, 0, linesToScroll);
1571 }
1572
1573 long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const
1574 {
1575     return ::SendMessage(GetHwnd(), EM_LINELENGTH, pos, 0);
1576 }
1577
1578 int wxTextCtrl::GetLineLength(long lineNo) const
1579 {
1580     long pos = XYToPosition(0, lineNo);
1581
1582     return GetLengthOfLineContainingPos(pos);
1583 }
1584
1585 wxString wxTextCtrl::GetLineText(long lineNo) const
1586 {
1587     size_t len = (size_t)GetLineLength(lineNo) + 1;
1588
1589     // there must be at least enough place for the length WORD in the
1590     // buffer
1591     len += sizeof(WORD);
1592
1593     wxString str;
1594     {
1595         wxStringBufferLength tmp(str, len);
1596         wxChar *buf = tmp;
1597
1598         *(WORD *)buf = (WORD)len;
1599         len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf);
1600
1601 #if wxUSE_RICHEDIT
1602         if ( IsRich() )
1603         {
1604             // remove the '\r' returned by the rich edit control, the user code
1605             // should never see it
1606             if ( buf[len - 2] == _T('\r') && buf[len - 1] == _T('\n') )
1607             {
1608                 // richedit 1.0 uses "\r\n" as line terminator, so remove "\r"
1609                 // here and "\n" below
1610                 buf[len - 2] = _T('\n');
1611                 len--;
1612             }
1613             else if ( buf[len - 1] == _T('\r') )
1614             {
1615                 // richedit 2.0+ uses only "\r", replace it with "\n"
1616                 buf[len - 1] = _T('\n');
1617             }
1618         }
1619 #endif // wxUSE_RICHEDIT
1620
1621         // remove the '\n' at the end, if any (this is how this function is
1622         // supposed to work according to the docs)
1623         if ( buf[len - 1] == _T('\n') )
1624         {
1625             len--;
1626         }
1627
1628         buf[len] = 0;
1629         tmp.SetLength(len);
1630     }
1631
1632     return str;
1633 }
1634
1635 void wxTextCtrl::SetMaxLength(unsigned long len)
1636 {
1637 #if wxUSE_RICHEDIT
1638     if ( IsRich() )
1639     {
1640         ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, len ? len : 0x7fffffff);
1641     }
1642     else
1643 #endif // wxUSE_RICHEDIT
1644     {
1645         wxTextEntry::SetMaxLength(len);
1646     }
1647 }
1648
1649 // ----------------------------------------------------------------------------
1650 // Undo/redo
1651 // ----------------------------------------------------------------------------
1652
1653 void wxTextCtrl::Redo()
1654 {
1655 #if wxUSE_RICHEDIT
1656     if ( GetRichVersion() > 1 )
1657     {
1658         ::SendMessage(GetHwnd(), EM_REDO, 0, 0);
1659         return;
1660     }
1661 #endif // wxUSE_RICHEDIT
1662
1663     wxTextEntry::Redo();
1664 }
1665
1666 bool wxTextCtrl::CanRedo() const
1667 {
1668 #if wxUSE_RICHEDIT
1669     if ( GetRichVersion() > 1 )
1670         return ::SendMessage(GetHwnd(), EM_CANREDO, 0, 0) != 0;
1671 #endif // wxUSE_RICHEDIT
1672
1673     return wxTextEntry::CanRedo();
1674 }
1675
1676 // ----------------------------------------------------------------------------
1677 // caret handling (Windows only)
1678 // ----------------------------------------------------------------------------
1679
1680 bool wxTextCtrl::ShowNativeCaret(bool show)
1681 {
1682     if ( show != m_isNativeCaretShown )
1683     {
1684         if ( !(show ? ::ShowCaret(GetHwnd()) : ::HideCaret(GetHwnd())) )
1685         {
1686             // not an error, may simply indicate that it's not shown/hidden
1687             // yet (i.e. it had been hidden/shown 2 times before)
1688             return false;
1689         }
1690
1691         m_isNativeCaretShown = show;
1692     }
1693
1694     return true;
1695 }
1696
1697 // ----------------------------------------------------------------------------
1698 // implementation details
1699 // ----------------------------------------------------------------------------
1700
1701 void wxTextCtrl::Command(wxCommandEvent & event)
1702 {
1703     SetValue(event.GetString());
1704     ProcessCommand (event);
1705 }
1706
1707 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
1708 {
1709     // By default, load the first file into the text window.
1710     if (event.GetNumberOfFiles() > 0)
1711     {
1712         LoadFile(event.GetFiles()[0]);
1713     }
1714 }
1715
1716 // ----------------------------------------------------------------------------
1717 // kbd input processing
1718 // ----------------------------------------------------------------------------
1719
1720 bool wxTextCtrl::MSWShouldPreProcessMessage(WXMSG* msg)
1721 {
1722     // check for our special keys here: if we don't do it and the parent frame
1723     // uses them as accelerators, they wouldn't work at all, so we disable
1724     // usual preprocessing for them
1725     if ( msg->message == WM_KEYDOWN )
1726     {
1727         const WPARAM vkey = msg->wParam;
1728         if ( HIWORD(msg->lParam) & KF_ALTDOWN )
1729         {
1730             // Alt-Backspace is accelerator for "Undo"
1731             if ( vkey == VK_BACK )
1732                 return false;
1733         }
1734         else // no Alt
1735         {
1736             // we want to process some Ctrl-foo and Shift-bar but no key
1737             // combinations without either Ctrl or Shift nor with both of them
1738             // pressed
1739             const int ctrl = wxIsCtrlDown(),
1740                       shift = wxIsShiftDown();
1741             switch ( ctrl + shift )
1742             {
1743                 default:
1744                     wxFAIL_MSG( _T("how many modifiers have we got?") );
1745                     // fall through
1746
1747                 case 0:
1748                     if ( IsMultiLine() && vkey == VK_RETURN )
1749                         return false;
1750                     // fall through
1751                 case 2:
1752                     break;
1753
1754                 case 1:
1755                     // either Ctrl or Shift pressed
1756                     if ( ctrl )
1757                     {
1758                         switch ( vkey )
1759                         {
1760                             case 'C':
1761                             case 'V':
1762                             case 'X':
1763                             case VK_INSERT:
1764                             case VK_DELETE:
1765                             case VK_HOME:
1766                             case VK_END:
1767                                 return false;
1768                         }
1769                     }
1770                     else // Shift is pressed
1771                     {
1772                         if ( vkey == VK_INSERT || vkey == VK_DELETE )
1773                             return false;
1774                     }
1775             }
1776         }
1777     }
1778
1779     return wxControl::MSWShouldPreProcessMessage(msg);
1780 }
1781
1782 void wxTextCtrl::OnChar(wxKeyEvent& event)
1783 {
1784     switch ( event.GetKeyCode() )
1785     {
1786         case WXK_RETURN:
1787             {
1788                 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1789                 InitCommandEvent(event);
1790                 event.SetString(GetValue());
1791                 if ( HandleWindowEvent(event) )
1792                 if ( !HasFlag(wxTE_MULTILINE) )
1793                     return;
1794                 //else: multiline controls need Enter for themselves
1795             }
1796             break;
1797
1798         case WXK_TAB:
1799             // ok, so this is getting absolutely ridiculous but I don't see
1800             // any other way to fix this bug: when a multiline text control is
1801             // inside a wxFrame, we need to generate the navigation event as
1802             // otherwise nothing happens at all, but when the same control is
1803             // created inside a dialog, IsDialogMessage() *does* switch focus
1804             // all by itself and so if we do it here as well, it is advanced
1805             // twice and goes to the next control... to prevent this from
1806             // happening we're doing this ugly check, the logic being that if
1807             // we don't have focus then it had been already changed to the next
1808             // control
1809             //
1810             // the right thing to do would, of course, be to understand what
1811             // the hell is IsDialogMessage() doing but this is beyond my feeble
1812             // forces at the moment unfortunately
1813             if ( !(m_windowStyle & wxTE_PROCESS_TAB))
1814             {
1815                 if ( FindFocus() == this )
1816                 {
1817                     int flags = 0;
1818                     if (!event.ShiftDown())
1819                         flags |= wxNavigationKeyEvent::IsForward ;
1820                     if (event.ControlDown())
1821                         flags |= wxNavigationKeyEvent::WinChange ;
1822                     if (Navigate(flags))
1823                         return;
1824                 }
1825             }
1826             else
1827             {
1828                 // Insert tab since calling the default Windows handler
1829                 // doesn't seem to do it
1830                 WriteText(wxT("\t"));
1831                 return;
1832             }
1833             break;
1834     }
1835
1836     // no, we didn't process it
1837     event.Skip();
1838 }
1839
1840 WXLRESULT wxTextCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
1841 {
1842     WXLRESULT lRc = wxTextCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
1843
1844     switch ( nMsg )
1845     {
1846         case WM_GETDLGCODE:
1847             {
1848                 // we always want the chars and the arrows: the arrows for
1849                 // navigation and the chars because we want Ctrl-C to work even
1850                 // in a read only control
1851                 long lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
1852
1853                 if ( IsEditable() )
1854                 {
1855                     // we may have several different cases:
1856                     // 1. normal: both TAB and ENTER are used for navigation
1857                     // 2. ctrl wants TAB for itself: ENTER is used to pass to
1858                     //    the next control in the dialog
1859                     // 3. ctrl wants ENTER for itself: TAB is used for dialog
1860                     //    navigation
1861                     // 4. ctrl wants both TAB and ENTER: Ctrl-ENTER is used to
1862                     //    go to the next control (we need some way to do it)
1863
1864                     // multiline controls should always get ENTER for themselves
1865                     if ( HasFlag(wxTE_PROCESS_ENTER) || HasFlag(wxTE_MULTILINE) )
1866                         lDlgCode |= DLGC_WANTMESSAGE;
1867
1868                     if ( HasFlag(wxTE_PROCESS_TAB) )
1869                         lDlgCode |= DLGC_WANTTAB;
1870
1871                     lRc |= lDlgCode;
1872                 }
1873                 else // !editable
1874                 {
1875                     // NB: use "=", not "|=" as the base class version returns
1876                     //     the same flags is this state as usual (i.e.
1877                     //     including DLGC_WANTMESSAGE). This is strange (how
1878                     //     does it work in the native Win32 apps?) but for now
1879                     //     live with it.
1880                     lRc = lDlgCode;
1881                 }
1882             }
1883             break;
1884     }
1885
1886     return lRc;
1887 }
1888
1889 // ----------------------------------------------------------------------------
1890 // text control event processing
1891 // ----------------------------------------------------------------------------
1892
1893 bool wxTextCtrl::SendUpdateEvent()
1894 {
1895     switch ( m_updatesCount )
1896     {
1897         case 0:
1898             // remember that we've got an update
1899             m_updatesCount++;
1900             break;
1901
1902         case 1:
1903             // we had already sent one event since the last control modification
1904             return false;
1905
1906         default:
1907             wxFAIL_MSG( _T("unexpected wxTextCtrl::m_updatesCount value") );
1908             // fall through
1909
1910         case -1:
1911             // we hadn't updated the control ourselves, this event comes from
1912             // the user, don't need to ignore it nor update the count
1913             break;
1914
1915         case -2:
1916             // the control was updated programmatically and we do NOT want to
1917             // send events
1918             return false;
1919     }
1920
1921     return SendTextUpdatedEvent();
1922 }
1923
1924 bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
1925 {
1926     switch ( param )
1927     {
1928         case EN_CHANGE:
1929             SendUpdateEvent();
1930             break;
1931
1932         case EN_MAXTEXT:
1933             // the text size limit has been hit -- try to increase it
1934             if ( !AdjustSpaceLimit() )
1935             {
1936                 wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, m_windowId);
1937                 InitCommandEvent(event);
1938                 event.SetString(GetValue());
1939                 ProcessCommand(event);
1940             }
1941             break;
1942
1943             // the other edit notification messages are not processed (or, in
1944             // the case of EN_{SET/KILL}FOCUS were already handled at WM_SET/
1945             // KILLFOCUS level)
1946         default:
1947             return false;
1948     }
1949
1950     // processed
1951     return true;
1952 }
1953
1954 WXHBRUSH wxTextCtrl::MSWControlColor(WXHDC hDC, WXHWND hWnd)
1955 {
1956     if ( !IsEnabled() && !HasFlag(wxTE_MULTILINE) )
1957         return MSWControlColorDisabled(hDC);
1958
1959     return wxTextCtrlBase::MSWControlColor(hDC, hWnd);
1960 }
1961
1962 bool wxTextCtrl::HasSpaceLimit(unsigned int *len) const
1963 {
1964     // HACK: we try to automatically extend the limit for the amount of text
1965     //       to allow (interactively) entering more than 64Kb of text under
1966     //       Win9x but we shouldn't reset the text limit which was previously
1967     //       set explicitly with SetMaxLength()
1968     //
1969     //       Unfortunately there is no EM_GETLIMITTEXTSETBYUSER and so we don't
1970     //       know the limit we set (if any). We could solve this by storing the
1971     //       limit we set in wxTextCtrl but to save space we prefer to simply
1972     //       test here the actual limit value: we consider that SetMaxLength()
1973     //       can only be called for small values while EN_MAXTEXT is only sent
1974     //       for large values (in practice the default limit seems to be 30000
1975     //       but make it smaller just to be on the safe side)
1976     *len = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
1977     return *len < 10001;
1978
1979 }
1980
1981 bool wxTextCtrl::AdjustSpaceLimit()
1982 {
1983     unsigned int limit;
1984     if ( HasSpaceLimit(&limit) )
1985         return false;
1986
1987     unsigned int len = ::GetWindowTextLength(GetHwnd());
1988     if ( len >= limit )
1989     {
1990         // increment in 32Kb chunks
1991         SetMaxLength(len + 0x8000);
1992     }
1993
1994     // we changed the limit
1995     return true;
1996 }
1997
1998 bool wxTextCtrl::AcceptsFocusFromKeyboard() const
1999 {
2000     // we don't want focus if we can't be edited unless we're a multiline
2001     // control because then it might be still nice to get focus from keyboard
2002     // to be able to scroll it without mouse
2003     return (IsEditable() || IsMultiLine()) && wxControl::AcceptsFocus();
2004 }
2005
2006 wxSize wxTextCtrl::DoGetBestSize() const
2007 {
2008     int cx, cy;
2009     wxGetCharSize(GetHWND(), &cx, &cy, GetFont());
2010
2011     int wText = DEFAULT_ITEM_WIDTH;
2012
2013     int hText = cy;
2014     if ( m_windowStyle & wxTE_MULTILINE )
2015     {
2016         hText *= wxMax(wxMin(GetNumberOfLines(), 10), 2);
2017     }
2018     //else: for single line control everything is ok
2019
2020     // we have to add the adjustments for the control height only once, not
2021     // once per line, so do it after multiplication above
2022     hText += EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy) - cy;
2023
2024     return wxSize(wText, hText);
2025 }
2026
2027 // ----------------------------------------------------------------------------
2028 // standard handlers for standard edit menu events
2029 // ----------------------------------------------------------------------------
2030
2031 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
2032 {
2033     Cut();
2034 }
2035
2036 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
2037 {
2038     Copy();
2039 }
2040
2041 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
2042 {
2043     Paste();
2044 }
2045
2046 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
2047 {
2048     Undo();
2049 }
2050
2051 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
2052 {
2053     Redo();
2054 }
2055
2056 void wxTextCtrl::OnDelete(wxCommandEvent& WXUNUSED(event))
2057 {
2058     long from, to;
2059     GetSelection(& from, & to);
2060     if (from != -1 && to != -1)
2061         Remove(from, to);
2062 }
2063
2064 void wxTextCtrl::OnSelectAll(wxCommandEvent& WXUNUSED(event))
2065 {
2066     SetSelection(-1, -1);
2067 }
2068
2069 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
2070 {
2071     event.Enable( CanCut() );
2072 }
2073
2074 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
2075 {
2076     event.Enable( CanCopy() );
2077 }
2078
2079 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
2080 {
2081     event.Enable( CanPaste() );
2082 }
2083
2084 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
2085 {
2086     event.Enable( CanUndo() );
2087 }
2088
2089 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
2090 {
2091     event.Enable( CanRedo() );
2092 }
2093
2094 void wxTextCtrl::OnUpdateDelete(wxUpdateUIEvent& event)
2095 {
2096     long from, to;
2097     GetSelection(& from, & to);
2098     event.Enable(from != -1 && to != -1 && from != to && IsEditable()) ;
2099 }
2100
2101 void wxTextCtrl::OnUpdateSelectAll(wxUpdateUIEvent& event)
2102 {
2103     event.Enable(GetLastPosition() > 0);
2104 }
2105
2106 void wxTextCtrl::OnContextMenu(wxContextMenuEvent& event)
2107 {
2108 #if wxUSE_RICHEDIT
2109     if (IsRich())
2110     {
2111         if (!m_privateContextMenu)
2112         {
2113             m_privateContextMenu = new wxMenu;
2114             m_privateContextMenu->Append(wxID_UNDO, _("&Undo"));
2115             m_privateContextMenu->Append(wxID_REDO, _("&Redo"));
2116             m_privateContextMenu->AppendSeparator();
2117             m_privateContextMenu->Append(wxID_CUT, _("Cu&t"));
2118             m_privateContextMenu->Append(wxID_COPY, _("&Copy"));
2119             m_privateContextMenu->Append(wxID_PASTE, _("&Paste"));
2120             m_privateContextMenu->Append(wxID_CLEAR, _("&Delete"));
2121             m_privateContextMenu->AppendSeparator();
2122             m_privateContextMenu->Append(wxID_SELECTALL, _("Select &All"));
2123         }
2124         PopupMenu(m_privateContextMenu);
2125         return;
2126     }
2127     else
2128 #endif
2129     event.Skip();
2130 }
2131
2132 void wxTextCtrl::OnSetFocus(wxFocusEvent& event)
2133 {
2134     // be sure the caret remains invisible if the user had hidden it
2135     if ( !m_isNativeCaretShown )
2136     {
2137         ::HideCaret(GetHwnd());
2138     }
2139
2140     event.Skip();
2141 }
2142
2143 // ----------------------------------------------------------------------------
2144 // Default colors for MSW text control
2145 //
2146 // Set default background color to the native white instead of
2147 // the default wxSYS_COLOUR_BTNFACE (is triggered with wxNullColour).
2148 // ----------------------------------------------------------------------------
2149
2150 wxVisualAttributes wxTextCtrl::GetDefaultAttributes() const
2151 {
2152     wxVisualAttributes attrs;
2153     attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
2154     attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
2155     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW); //white
2156
2157     return attrs;
2158 }
2159
2160 // the rest of the file only deals with the rich edit controls
2161 #if wxUSE_RICHEDIT
2162
2163 // ----------------------------------------------------------------------------
2164 // EN_LINK processing
2165 // ----------------------------------------------------------------------------
2166
2167 bool wxTextCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
2168 {
2169     NMHDR *hdr = (NMHDR* )lParam;
2170     switch ( hdr->code )
2171     {
2172        case EN_MSGFILTER:
2173             {
2174                 const MSGFILTER *msgf = (MSGFILTER *)lParam;
2175                 UINT msg = msgf->msg;
2176
2177                 // this is a bit crazy but richedit 1.0 sends us all mouse
2178                 // events _except_ WM_LBUTTONUP (don't ask me why) so we have
2179                 // generate the wxWin events for this message manually
2180                 //
2181                 // NB: in fact, this is still not totally correct as it does
2182                 //     send us WM_LBUTTONUP if the selection was cleared by the
2183                 //     last click -- so currently we get 2 events in this case,
2184                 //     but as I don't see any obvious way to check for this I
2185                 //     leave this code in place because it's still better than
2186                 //     not getting left up events at all
2187                 if ( msg == WM_LBUTTONUP )
2188                 {
2189                     WXUINT flags = msgf->wParam;
2190                     int x = GET_X_LPARAM(msgf->lParam),
2191                         y = GET_Y_LPARAM(msgf->lParam);
2192
2193                     HandleMouseEvent(msg, x, y, flags);
2194                 }
2195             }
2196
2197             // return true to process the event (and false to ignore it)
2198             return true;
2199
2200         case EN_LINK:
2201             {
2202                 const ENLINK *enlink = (ENLINK *)hdr;
2203
2204                 switch ( enlink->msg )
2205                 {
2206                     case WM_SETCURSOR:
2207                         // ok, so it is hardcoded - do we really nee to
2208                         // customize it?
2209                         {
2210                             wxCursor cur(wxCURSOR_HAND);
2211                             ::SetCursor(GetHcursorOf(cur));
2212                             *result = TRUE;
2213                             break;
2214                         }
2215
2216                     case WM_MOUSEMOVE:
2217                     case WM_LBUTTONDOWN:
2218                     case WM_LBUTTONUP:
2219                     case WM_LBUTTONDBLCLK:
2220                     case WM_RBUTTONDOWN:
2221                     case WM_RBUTTONUP:
2222                     case WM_RBUTTONDBLCLK:
2223                         // send a mouse event
2224                         {
2225                             static const wxEventType eventsMouse[] =
2226                             {
2227                                 wxEVT_MOTION,
2228                                 wxEVT_LEFT_DOWN,
2229                                 wxEVT_LEFT_UP,
2230                                 wxEVT_LEFT_DCLICK,
2231                                 wxEVT_RIGHT_DOWN,
2232                                 wxEVT_RIGHT_UP,
2233                                 wxEVT_RIGHT_DCLICK,
2234                             };
2235
2236                             // the event ids are consecutive
2237                             wxMouseEvent
2238                                 evtMouse(eventsMouse[enlink->msg - WM_MOUSEMOVE]);
2239
2240                             InitMouseEvent(evtMouse,
2241                                            GET_X_LPARAM(enlink->lParam),
2242                                            GET_Y_LPARAM(enlink->lParam),
2243                                            enlink->wParam);
2244
2245                             wxTextUrlEvent event(m_windowId, evtMouse,
2246                                                  enlink->chrg.cpMin,
2247                                                  enlink->chrg.cpMax);
2248
2249                             InitCommandEvent(event);
2250
2251                             *result = ProcessCommand(event);
2252                         }
2253                         break;
2254                 }
2255             }
2256             return true;
2257     }
2258
2259     // not processed, leave it to the base class
2260     return wxTextCtrlBase::MSWOnNotify(idCtrl, lParam, result);
2261 }
2262
2263 #if wxUSE_DRAG_AND_DROP
2264
2265 void wxTextCtrl::SetDropTarget(wxDropTarget *dropTarget)
2266 {
2267     if ( m_dropTarget == wxRICHTEXT_DEFAULT_DROPTARGET )
2268     {
2269         // get rid of the built-in drop target
2270         ::RevokeDragDrop(GetHwnd());
2271         m_dropTarget = NULL;
2272     }
2273
2274     wxTextCtrlBase::SetDropTarget(dropTarget);
2275 }
2276
2277 #endif // wxUSE_DRAG_AND_DROP
2278
2279 // ----------------------------------------------------------------------------
2280 // colour setting for the rich edit controls
2281 // ----------------------------------------------------------------------------
2282
2283 bool wxTextCtrl::SetBackgroundColour(const wxColour& colour)
2284 {
2285     if ( !wxTextCtrlBase::SetBackgroundColour(colour) )
2286     {
2287         // colour didn't really change
2288         return false;
2289     }
2290
2291     if ( IsRich() )
2292     {
2293         // rich edit doesn't use WM_CTLCOLOR, hence we need to send
2294         // EM_SETBKGNDCOLOR additionally
2295         ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour));
2296     }
2297
2298     return true;
2299 }
2300
2301 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
2302 {
2303     if ( !wxTextCtrlBase::SetForegroundColour(colour) )
2304     {
2305         // colour didn't really change
2306         return false;
2307     }
2308
2309     if ( IsRich() )
2310     {
2311         // change the colour of everything
2312         CHARFORMAT cf;
2313         wxZeroMemory(cf);
2314         cf.cbSize = sizeof(cf);
2315         cf.dwMask = CFM_COLOR;
2316         cf.crTextColor = wxColourToRGB(colour);
2317         ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf);
2318     }
2319
2320     return true;
2321 }
2322
2323 // ----------------------------------------------------------------------------
2324 // styling support for rich edit controls
2325 // ----------------------------------------------------------------------------
2326
2327 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
2328 {
2329     if ( !IsRich() )
2330     {
2331         // can't do it with normal text control
2332         return false;
2333     }
2334
2335     // the richedit 1.0 doesn't handle setting background colour, so don't
2336     // even try to do anything if it's the only thing we want to change
2337     if ( m_verRichEdit == 1 && !style.HasFont() && !style.HasTextColour() &&
2338         !style.HasLeftIndent() && !style.HasRightIndent() && !style.HasAlignment() &&
2339         !style.HasTabs() )
2340     {
2341         // nothing to do: return true if there was really nothing to do and
2342         // false if we failed to set bg colour
2343         return !style.HasBackgroundColour();
2344     }
2345
2346     // order the range if needed
2347     if ( start > end )
2348     {
2349         long tmp = start;
2350         start = end;
2351         end = tmp;
2352     }
2353
2354     // we can only change the format of the selection, so select the range we
2355     // want and restore the old selection later
2356     long startOld, endOld;
2357     GetSelection(&startOld, &endOld);
2358
2359     // but do we really have to change the selection?
2360     bool changeSel = start != startOld || end != endOld;
2361
2362     if ( changeSel )
2363     {
2364         DoSetSelection(start, end, SetSel_NoScroll);
2365     }
2366
2367     // initialize CHARFORMAT struct
2368 #if wxUSE_RICHEDIT2
2369     CHARFORMAT2 cf;
2370 #else
2371     CHARFORMAT cf;
2372 #endif
2373
2374     wxZeroMemory(cf);
2375
2376     // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2377     // CHARFORMAT in that case
2378 #if wxUSE_RICHEDIT2
2379     if ( m_verRichEdit == 1 )
2380     {
2381         // this is the only thing the control is going to grok
2382         cf.cbSize = sizeof(CHARFORMAT);
2383     }
2384     else
2385 #endif
2386     {
2387         // CHARFORMAT or CHARFORMAT2
2388         cf.cbSize = sizeof(cf);
2389     }
2390
2391     if ( style.HasFont() )
2392     {
2393         // VZ: CFM_CHARSET doesn't seem to do anything at all in RichEdit 2.0
2394         //     but using it doesn't seem to hurt neither so leaving it for now
2395
2396         cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET |
2397                      CFM_ITALIC | CFM_BOLD | CFM_UNDERLINE;
2398
2399         // fill in data from LOGFONT but recalculate lfHeight because we need
2400         // the real height in twips and not the negative number which
2401         // wxFillLogFont() returns (this is correct in general and works with
2402         // the Windows font mapper, but not here)
2403
2404         wxFont font(style.GetFont());
2405
2406         LOGFONT lf;
2407         wxFillLogFont(&lf, &font);
2408         cf.yHeight = 20*font.GetPointSize(); // 1 pt = 20 twips
2409         cf.bCharSet = lf.lfCharSet;
2410         cf.bPitchAndFamily = lf.lfPitchAndFamily;
2411         wxStrncpy( cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName) );
2412
2413         // also deal with underline/italic/bold attributes: note that we must
2414         // always set CFM_ITALIC &c bits in dwMask, even if we don't set the
2415         // style to allow clearing it
2416         if ( lf.lfItalic )
2417         {
2418             cf.dwEffects |= CFE_ITALIC;
2419         }
2420
2421         if ( lf.lfWeight == FW_BOLD )
2422         {
2423             cf.dwEffects |= CFE_BOLD;
2424         }
2425
2426         if ( lf.lfUnderline )
2427         {
2428             cf.dwEffects |= CFE_UNDERLINE;
2429         }
2430
2431         // strikeout fonts are not supported by wxWidgets
2432     }
2433
2434     if ( style.HasTextColour() )
2435     {
2436         cf.dwMask |= CFM_COLOR;
2437         cf.crTextColor = wxColourToRGB(style.GetTextColour());
2438     }
2439
2440 #if wxUSE_RICHEDIT2
2441     if ( m_verRichEdit != 1 && style.HasBackgroundColour() )
2442     {
2443         cf.dwMask |= CFM_BACKCOLOR;
2444         cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
2445     }
2446 #endif // wxUSE_RICHEDIT2
2447
2448     // do format the selection
2449     bool ok = ::SendMessage(GetHwnd(), EM_SETCHARFORMAT,
2450                             SCF_SELECTION, (LPARAM)&cf) != 0;
2451     if ( !ok )
2452     {
2453         wxLogDebug(_T("SendMessage(EM_SETCHARFORMAT, SCF_SELECTION) failed"));
2454     }
2455
2456     // now do the paragraph formatting
2457     PARAFORMAT2 pf;
2458     wxZeroMemory(pf);
2459     // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2460     // PARAFORMAT in that case
2461 #if wxUSE_RICHEDIT2
2462     if ( m_verRichEdit == 1 )
2463     {
2464         // this is the only thing the control is going to grok
2465         pf.cbSize = sizeof(PARAFORMAT);
2466     }
2467     else
2468 #endif
2469     {
2470         // PARAFORMAT or PARAFORMAT2
2471         pf.cbSize = sizeof(pf);
2472     }
2473
2474     if (style.HasAlignment())
2475     {
2476         pf.dwMask |= PFM_ALIGNMENT;
2477         if (style.GetAlignment() == wxTEXT_ALIGNMENT_RIGHT)
2478             pf.wAlignment = PFA_RIGHT;
2479         else if (style.GetAlignment() == wxTEXT_ALIGNMENT_CENTRE)
2480             pf.wAlignment = PFA_CENTER;
2481         else if (style.GetAlignment() == wxTEXT_ALIGNMENT_JUSTIFIED)
2482             pf.wAlignment = PFA_JUSTIFY;
2483         else
2484             pf.wAlignment = PFA_LEFT;
2485     }
2486
2487     if (style.HasLeftIndent())
2488     {
2489         pf.dwMask |= PFM_STARTINDENT | PFM_OFFSET;
2490
2491         // Convert from 1/10 mm to TWIPS
2492         pf.dxStartIndent = (int) (((double) style.GetLeftIndent()) * mm2twips / 10.0) ;
2493         pf.dxOffset = (int) (((double) style.GetLeftSubIndent()) * mm2twips / 10.0) ;
2494     }
2495
2496     if (style.HasRightIndent())
2497     {
2498         pf.dwMask |= PFM_RIGHTINDENT;
2499
2500         // Convert from 1/10 mm to TWIPS
2501         pf.dxRightIndent = (int) (((double) style.GetRightIndent()) * mm2twips / 10.0) ;
2502     }
2503
2504     if (style.HasTabs())
2505     {
2506         pf.dwMask |= PFM_TABSTOPS;
2507
2508         const wxArrayInt& tabs = style.GetTabs();
2509
2510         pf.cTabCount = (SHORT)wxMin(tabs.GetCount(), MAX_TAB_STOPS);
2511         size_t i;
2512         for (i = 0; i < (size_t) pf.cTabCount; i++)
2513         {
2514             // Convert from 1/10 mm to TWIPS
2515             pf.rgxTabs[i] = (int) (((double) tabs[i]) * mm2twips / 10.0) ;
2516         }
2517     }
2518
2519 #if wxUSE_RICHEDIT2
2520     if ( m_verRichEdit > 1 )
2521     {
2522         if ( wxTheApp->GetLayoutDirection() == wxLayout_RightToLeft )
2523         {
2524             // Use RTL paragraphs in RTL mode to get proper layout
2525             pf.dwMask |= PFM_RTLPARA;
2526             pf.wEffects |= PFE_RTLPARA;
2527         }
2528     }
2529 #endif // wxUSE_RICHEDIT2
2530
2531     if ( pf.dwMask )
2532     {
2533         // do format the selection
2534         bool ok = ::SendMessage(GetHwnd(), EM_SETPARAFORMAT,
2535                                 0, (LPARAM) &pf) != 0;
2536         if ( !ok )
2537         {
2538             wxLogDebug(_T("SendMessage(EM_SETPARAFORMAT, 0) failed"));
2539         }
2540     }
2541
2542     if ( changeSel )
2543     {
2544         // restore the original selection
2545         DoSetSelection(startOld, endOld, SetSel_NoScroll);
2546     }
2547
2548     return ok;
2549 }
2550
2551 bool wxTextCtrl::SetDefaultStyle(const wxTextAttr& style)
2552 {
2553     if ( !wxTextCtrlBase::SetDefaultStyle(style) )
2554         return false;
2555
2556     if ( IsEditable() )
2557     {
2558         // we have to do this or the style wouldn't apply for the text typed by
2559         // the user
2560         wxTextPos posLast = GetLastPosition();
2561         SetStyle(posLast, posLast, m_defaultStyle);
2562     }
2563
2564     return true;
2565 }
2566
2567 bool wxTextCtrl::GetStyle(long position, wxTextAttr& style)
2568 {
2569     if ( !IsRich() )
2570     {
2571         // can't do it with normal text control
2572         return false;
2573     }
2574
2575     // initialize CHARFORMAT struct
2576 #if wxUSE_RICHEDIT2
2577     CHARFORMAT2 cf;
2578 #else
2579     CHARFORMAT cf;
2580 #endif
2581
2582     wxZeroMemory(cf);
2583
2584     // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2585     // CHARFORMAT in that case
2586 #if wxUSE_RICHEDIT2
2587     if ( m_verRichEdit == 1 )
2588     {
2589         // this is the only thing the control is going to grok
2590         cf.cbSize = sizeof(CHARFORMAT);
2591     }
2592     else
2593 #endif
2594     {
2595         // CHARFORMAT or CHARFORMAT2
2596         cf.cbSize = sizeof(cf);
2597     }
2598     // we can only change the format of the selection, so select the range we
2599     // want and restore the old selection later
2600     long startOld, endOld;
2601     GetSelection(&startOld, &endOld);
2602
2603     // but do we really have to change the selection?
2604     bool changeSel = position != startOld || position != endOld;
2605
2606     if ( changeSel )
2607     {
2608         DoSetSelection(position, position + 1, SetSel_NoScroll);
2609     }
2610
2611     // get the selection formatting
2612     (void) ::SendMessage(GetHwnd(), EM_GETCHARFORMAT,
2613                             SCF_SELECTION, (LPARAM)&cf) ;
2614
2615
2616     LOGFONT lf;
2617     lf.lfHeight = cf.yHeight;
2618     lf.lfWidth = 0;
2619     lf.lfCharSet = ANSI_CHARSET; // FIXME: how to get correct charset?
2620     lf.lfClipPrecision = 0;
2621     lf.lfEscapement = 0;
2622     wxStrcpy(lf.lfFaceName, cf.szFaceName);
2623
2624     //NOTE:  we _MUST_ set each of these values to _something_ since we
2625     //do not call wxZeroMemory on the LOGFONT lf
2626     if (cf.dwEffects & CFE_ITALIC)
2627         lf.lfItalic = TRUE;
2628     else
2629         lf.lfItalic = FALSE;
2630
2631     lf.lfOrientation = 0;
2632     lf.lfPitchAndFamily = cf.bPitchAndFamily;
2633     lf.lfQuality = 0;
2634
2635     if (cf.dwEffects & CFE_STRIKEOUT)
2636         lf.lfStrikeOut = TRUE;
2637     else
2638         lf.lfStrikeOut = FALSE;
2639
2640     if (cf.dwEffects & CFE_UNDERLINE)
2641         lf.lfUnderline = TRUE;
2642     else
2643         lf.lfUnderline = FALSE;
2644
2645     if (cf.dwEffects & CFE_BOLD)
2646         lf.lfWeight = FW_BOLD;
2647     else
2648         lf.lfWeight = FW_NORMAL;
2649
2650     wxFont font = wxCreateFontFromLogFont(& lf);
2651     if (font.Ok())
2652     {
2653         style.SetFont(font);
2654     }
2655     style.SetTextColour(wxColour(cf.crTextColor));
2656
2657 #if wxUSE_RICHEDIT2
2658     if ( m_verRichEdit != 1 )
2659     {
2660         // cf.dwMask |= CFM_BACKCOLOR;
2661         style.SetBackgroundColour(wxColour(cf.crBackColor));
2662     }
2663 #endif // wxUSE_RICHEDIT2
2664
2665     // now get the paragraph formatting
2666     PARAFORMAT2 pf;
2667     wxZeroMemory(pf);
2668     // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2669     // PARAFORMAT in that case
2670 #if wxUSE_RICHEDIT2
2671     if ( m_verRichEdit == 1 )
2672     {
2673         // this is the only thing the control is going to grok
2674         pf.cbSize = sizeof(PARAFORMAT);
2675     }
2676     else
2677 #endif
2678     {
2679         // PARAFORMAT or PARAFORMAT2
2680         pf.cbSize = sizeof(pf);
2681     }
2682
2683     // do format the selection
2684     (void) ::SendMessage(GetHwnd(), EM_GETPARAFORMAT, 0, (LPARAM) &pf) ;
2685
2686     style.SetLeftIndent( (int) ((double) pf.dxStartIndent * twips2mm * 10.0), (int) ((double) pf.dxOffset * twips2mm * 10.0) );
2687     style.SetRightIndent( (int) ((double) pf.dxRightIndent * twips2mm * 10.0) );
2688
2689     if (pf.wAlignment == PFA_CENTER)
2690         style.SetAlignment(wxTEXT_ALIGNMENT_CENTRE);
2691     else if (pf.wAlignment == PFA_RIGHT)
2692         style.SetAlignment(wxTEXT_ALIGNMENT_RIGHT);
2693     else if (pf.wAlignment == PFA_JUSTIFY)
2694         style.SetAlignment(wxTEXT_ALIGNMENT_JUSTIFIED);
2695     else
2696         style.SetAlignment(wxTEXT_ALIGNMENT_LEFT);
2697
2698     wxArrayInt tabStops;
2699     size_t i;
2700     for (i = 0; i < (size_t) pf.cTabCount; i++)
2701     {
2702         tabStops.Add( (int) ((double) (pf.rgxTabs[i] & 0xFFFF) * twips2mm * 10.0) );
2703     }
2704
2705     if ( changeSel )
2706     {
2707         // restore the original selection
2708         DoSetSelection(startOld, endOld, SetSel_NoScroll);
2709     }
2710
2711     return true;
2712 }
2713
2714 // ----------------------------------------------------------------------------
2715 // wxRichEditModule
2716 // ----------------------------------------------------------------------------
2717
2718 static const HINSTANCE INVALID_HINSTANCE = (HINSTANCE)-1;
2719
2720 bool wxRichEditModule::OnInit()
2721 {
2722     // don't do anything - we will load it when needed
2723     return true;
2724 }
2725
2726 void wxRichEditModule::OnExit()
2727 {
2728     for ( size_t i = 0; i < WXSIZEOF(ms_hRichEdit); i++ )
2729     {
2730         if ( ms_hRichEdit[i] && ms_hRichEdit[i] != INVALID_HINSTANCE )
2731         {
2732             ::FreeLibrary(ms_hRichEdit[i]);
2733             ms_hRichEdit[i] = NULL;
2734         }
2735     }
2736 #if wxUSE_INKEDIT
2737     if (ms_inkEditLib.IsLoaded())
2738         ms_inkEditLib.Unload();
2739 #endif
2740 }
2741
2742 /* static */
2743 bool wxRichEditModule::Load(Version version)
2744 {
2745     if ( ms_hRichEdit[version] == INVALID_HINSTANCE )
2746     {
2747         // we had already tried to load it and failed
2748         return false;
2749     }
2750
2751     if ( ms_hRichEdit[version] )
2752     {
2753         // we've already got this one
2754         return true;
2755     }
2756
2757     static const wxChar *dllnames[] =
2758     {
2759         _T("riched32"),
2760         _T("riched20"),
2761         _T("msftedit"),
2762     };
2763
2764     wxCOMPILE_TIME_ASSERT( WXSIZEOF(dllnames) == Version_Max,
2765                             RichEditDllNamesVersionsMismatch );
2766
2767     ms_hRichEdit[version] = ::LoadLibrary(dllnames[version]);
2768
2769     if ( !ms_hRichEdit[version] )
2770     {
2771         ms_hRichEdit[version] = INVALID_HINSTANCE;
2772
2773         return false;
2774     }
2775
2776     return true;
2777 }
2778
2779 #if wxUSE_INKEDIT
2780 // load the InkEdit library
2781 bool wxRichEditModule::LoadInkEdit()
2782 {
2783     static wxDynamicLibrary ms_inkEditLib;
2784     static bool             ms_inkEditLibLoadAttemped;
2785     if (ms_inkEditLibLoadAttemped)
2786         ms_inkEditLib.IsLoaded();
2787
2788     ms_inkEditLibLoadAttemped = true;
2789
2790     wxLogNull logNull;
2791     return ms_inkEditLib.Load(wxT("inked"));
2792 }
2793 #endif // wxUSE_INKEDIT
2794
2795
2796 #endif // wxUSE_RICHEDIT
2797
2798 #endif // wxUSE_TEXTCTRL && !(__SMARTPHONE__ && __WXWINCE__)