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