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