src/msw/textctrl.cpp

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