src/msw/textctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/msw/textctrl.cpp
   3 // Purpose:     wxTextCtrl
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #if wxUSE_TEXTCTRL && !(defined(__SMARTPHONE__) && defined(__WXWINCE__))
  28
  29 #ifndef WX_PRECOMP
  30     #include "wx/textctrl.h"
  31     #include "wx/settings.h"
  32     #include "wx/brush.h"
  33     #include "wx/utils.h"
  34     #include "wx/intl.h"
  35     #include "wx/log.h"
  36     #include "wx/app.h"
  37     #include "wx/menu.h"
  38     #include "wx/math.h"
  39     #include "wx/module.h"
  40     #include "wx/wxcrtvararg.h"
  41 #endif
  42
  43 #include "wx/sysopt.h"
  44
  45 #if wxUSE_CLIPBOARD
  46     #include "wx/clipbrd.h"
  47 #endif
  48
  49 #include "wx/textfile.h"
  50
  51 #include <windowsx.h>
  52
  53 #include "wx/msw/private.h"
  54 #include "wx/msw/winundef.h"
  55 #include "wx/msw/mslu.h"
  56
  57 #include <string.h>
  58 #include <stdlib.h>
  59
  60 #ifndef __WXWINCE__
  61 #include <sys/types.h>
  62 #endif
  63
  64 #if wxUSE_RICHEDIT
  65
  66 #if wxUSE_INKEDIT
  67 #include "wx/dynlib.h"
  68 #endif
  69
  70 // old mingw32 has richedit stuff directly in windows.h and doesn't have
  71 // richedit.h at all
  72 #if !defined(__GNUWIN32_OLD__) || defined(__CYGWIN10__)
  73     #include <richedit.h>
  74 #endif
  75
  76 #endif // wxUSE_RICHEDIT
  77
  78 #include "wx/msw/missing.h"
  79
  80 #if wxUSE_DRAG_AND_DROP && wxUSE_RICHEDIT
  81
  82 // dummy value used for m_dropTarget, different from any valid pointer value
  83 // (which are all even under Windows) and NULL
  84 static wxDropTarget *
  85     wxRICHTEXT_DEFAULT_DROPTARGET = wx_reinterpret_cast(wxDropTarget *, 1);
  86
  87 #endif // wxUSE_DRAG_AND_DROP && wxUSE_RICHEDIT
  88
  89 // ----------------------------------------------------------------------------
  90 // private classes
  91 // ----------------------------------------------------------------------------
  92
  93 #if wxUSE_RICHEDIT
  94
  95 // this module initializes RichEdit DLL(s) if needed
  96 class wxRichEditModule : public wxModule
  97 {
  98 public:
  99     enum Version
 100     {
 101         Version_1,          // riched32.dll
 102         Version_2or3,       // both use riched20.dll
 103         Version_41,         // msftedit.dll (XP SP1 and Windows 2003)
 104         Version_Max
 105     };
 106
 107     virtual bool OnInit();
 108     virtual void OnExit();
 109
 110     // load the richedit DLL for the specified version of rich edit
 111     static bool Load(Version version);
 112
 113 #if wxUSE_INKEDIT
 114     // load the InkEdit library
 115     static bool LoadInkEdit();
 116 #endif
 117
 118 private:
 119     // the handles to richedit 1.0 and 2.0 (or 3.0) DLLs
 120     static HINSTANCE ms_hRichEdit[Version_Max];
 121
 122 #if wxUSE_INKEDIT
 123     static wxDynamicLibrary ms_inkEditLib;
 124     static bool             ms_inkEditLibLoadAttemped;
 125 #endif
 126
 127     DECLARE_DYNAMIC_CLASS(wxRichEditModule)
 128 };
 129
 130 HINSTANCE wxRichEditModule::ms_hRichEdit[Version_Max] = { NULL, NULL, NULL };
 131
 132 #if wxUSE_INKEDIT
 133 wxDynamicLibrary wxRichEditModule::ms_inkEditLib;
 134 bool             wxRichEditModule::ms_inkEditLibLoadAttemped = false;
 135 #endif
 136
 137 IMPLEMENT_DYNAMIC_CLASS(wxRichEditModule, wxModule)
 138
 139 #endif // wxUSE_RICHEDIT
 140
 141 // a small class used to set m_updatesCount to 0 (to filter duplicate events if
 142 // necessary) and to reset it back to -1 afterwards
 143 class UpdatesCountFilter
 144 {
 145 public:
 146     UpdatesCountFilter(int& count)
 147         : m_count(count)
 148     {
 149         wxASSERT_MSG( m_count == -1 || m_count == -2,
 150                       _T("wrong initial m_updatesCount value") );
 151
 152         if (m_count != -2)
 153             m_count = 0;
 154         //else: we don't want to count how many update events we get as we're going
 155         //      to ignore all of them
 156     }
 157
 158     ~UpdatesCountFilter()
 159     {
 160         m_count = -1;
 161     }
 162
 163     // return true if an event has been received
 164     bool GotUpdate() const
 165     {
 166         return m_count == 1;
 167     }
 168
 169 private:
 170     int& m_count;
 171
 172     DECLARE_NO_COPY_CLASS(UpdatesCountFilter)
 173 };
 174
 175 // ----------------------------------------------------------------------------
 176 // event tables and other macros
 177 // ----------------------------------------------------------------------------
 178
 179 #if wxUSE_EXTENDED_RTTI
 180 WX_DEFINE_FLAGS( wxTextCtrlStyle )
 181
 182 wxBEGIN_FLAGS( wxTextCtrlStyle )
 183     // new style border flags, we put them first to
 184     // use them for streaming out
 185     wxFLAGS_MEMBER(wxBORDER_SIMPLE)
 186     wxFLAGS_MEMBER(wxBORDER_SUNKEN)
 187     wxFLAGS_MEMBER(wxBORDER_DOUBLE)
 188     wxFLAGS_MEMBER(wxBORDER_RAISED)
 189     wxFLAGS_MEMBER(wxBORDER_STATIC)
 190     wxFLAGS_MEMBER(wxBORDER_NONE)
 191
 192     // old style border flags
 193     wxFLAGS_MEMBER(wxSIMPLE_BORDER)
 194     wxFLAGS_MEMBER(wxSUNKEN_BORDER)
 195     wxFLAGS_MEMBER(wxDOUBLE_BORDER)
 196     wxFLAGS_MEMBER(wxRAISED_BORDER)
 197     wxFLAGS_MEMBER(wxSTATIC_BORDER)
 198     wxFLAGS_MEMBER(wxBORDER)
 199
 200     // standard window styles
 201     wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
 202     wxFLAGS_MEMBER(wxCLIP_CHILDREN)
 203     wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
 204     wxFLAGS_MEMBER(wxWANTS_CHARS)
 205     wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
 206     wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
 207     wxFLAGS_MEMBER(wxVSCROLL)
 208     wxFLAGS_MEMBER(wxHSCROLL)
 209
 210     wxFLAGS_MEMBER(wxTE_PROCESS_ENTER)
 211     wxFLAGS_MEMBER(wxTE_PROCESS_TAB)
 212     wxFLAGS_MEMBER(wxTE_MULTILINE)
 213     wxFLAGS_MEMBER(wxTE_PASSWORD)
 214     wxFLAGS_MEMBER(wxTE_READONLY)
 215     wxFLAGS_MEMBER(wxHSCROLL)
 216     wxFLAGS_MEMBER(wxTE_RICH)
 217     wxFLAGS_MEMBER(wxTE_RICH2)
 218     wxFLAGS_MEMBER(wxTE_AUTO_URL)
 219     wxFLAGS_MEMBER(wxTE_NOHIDESEL)
 220     wxFLAGS_MEMBER(wxTE_LEFT)
 221     wxFLAGS_MEMBER(wxTE_CENTRE)
 222     wxFLAGS_MEMBER(wxTE_RIGHT)
 223     wxFLAGS_MEMBER(wxTE_DONTWRAP)
 224     wxFLAGS_MEMBER(wxTE_CHARWRAP)
 225     wxFLAGS_MEMBER(wxTE_WORDWRAP)
 226
 227 wxEND_FLAGS( wxTextCtrlStyle )
 228
 229 IMPLEMENT_DYNAMIC_CLASS_XTI(wxTextCtrl, wxControl,"wx/textctrl.h")
 230
 231 wxBEGIN_PROPERTIES_TABLE(wxTextCtrl)
 232     wxEVENT_PROPERTY( TextUpdated , wxEVT_COMMAND_TEXT_UPDATED , wxCommandEvent )
 233     wxEVENT_PROPERTY( TextEnter , wxEVT_COMMAND_TEXT_ENTER , wxCommandEvent )
 234
 235     wxPROPERTY( Font , wxFont , SetFont , GetFont  , EMPTY_MACROVALUE, 0 /*flags*/ , wxT("Helpstring") , wxT("group") )
 236     wxPROPERTY( Value , wxString , SetValue, GetValue, wxString() , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
 237     wxPROPERTY_FLAGS( WindowStyle , wxTextCtrlStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
 238 wxEND_PROPERTIES_TABLE()
 239
 240 wxBEGIN_HANDLERS_TABLE(wxTextCtrl)
 241 wxEND_HANDLERS_TABLE()
 242
 243 wxCONSTRUCTOR_6( wxTextCtrl , wxWindow* , Parent , wxWindowID , Id , wxString , Value , wxPoint , Position , wxSize , Size , long , WindowStyle)
 244 #else
 245 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxTextCtrlBase)
 246 #endif
 247
 248
 249 BEGIN_EVENT_TABLE(wxTextCtrl, wxTextCtrlBase)
 250     EVT_CHAR(wxTextCtrl::OnChar)
 251     EVT_DROP_FILES(wxTextCtrl::OnDropFiles)
 252
 253 #if wxUSE_RICHEDIT
 254     EVT_CONTEXT_MENU(wxTextCtrl::OnContextMenu)
 255 #endif
 256
 257     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 258     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 259     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 260     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 261     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 262     EVT_MENU(wxID_CLEAR, wxTextCtrl::OnDelete)
 263     EVT_MENU(wxID_SELECTALL, wxTextCtrl::OnSelectAll)
 264
 265     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 266     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 267     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 268     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 269     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 270     EVT_UPDATE_UI(wxID_CLEAR, wxTextCtrl::OnUpdateDelete)
 271     EVT_UPDATE_UI(wxID_SELECTALL, wxTextCtrl::OnUpdateSelectAll)
 272
 273     EVT_SET_FOCUS(wxTextCtrl::OnSetFocus)
 274 END_EVENT_TABLE()
 275
 276 // ============================================================================
 277 // implementation
 278 // ============================================================================
 279
 280 // ----------------------------------------------------------------------------
 281 // creation
 282 // ----------------------------------------------------------------------------
 283
 284 void wxTextCtrl::Init()
 285 {
 286 #if wxUSE_RICHEDIT
 287     m_verRichEdit = 0;
 288 #endif // wxUSE_RICHEDIT
 289
 290 #if wxUSE_INKEDIT && wxUSE_RICHEDIT
 291     m_isInkEdit = 0;
 292 #endif
 293
 294     m_privateContextMenu = NULL;
 295     m_updatesCount = -1;
 296     m_isNativeCaretShown = true;
 297 }
 298
 299 wxTextCtrl::~wxTextCtrl()
 300 {
 301 #if wxUSE_DRAG_AND_DROP && wxUSE_RICHEDIT
 302     if ( m_dropTarget == wxRICHTEXT_DEFAULT_DROPTARGET )
 303     {
 304         // don't try to destroy this dummy pointer in the base class dtor
 305         m_dropTarget = NULL;
 306     }
 307 #endif // wxUSE_DRAG_AND_DROP && wxUSE_RICHEDIT
 308
 309     delete m_privateContextMenu;
 310 }
 311
 312 bool wxTextCtrl::Create(wxWindow *parent,
 313                         wxWindowID id,
 314                         const wxString& value,
 315                         const wxPoint& pos,
 316                         const wxSize& size,
 317                         long style,
 318                         const wxValidator& validator,
 319                         const wxString& name)
 320 {
 321     // base initialization
 322     if ( !CreateControl(parent, id, pos, size, style, validator, name) )
 323         return false;
 324
 325     if ( !MSWCreateText(value, pos, size) )
 326         return false;
 327
 328 #if wxUSE_DRAG_AND_DROP && wxUSE_RICHEDIT
 329     if ( IsRich() )
 330     {
 331         // rich text controls have a default associated drop target which
 332         // allows them to receive (rich) text dropped on them, which is nice,
 333         // but prevents us from associating a user-defined drop target with
 334         // them as we need to unregister the old one first
 335         //
 336         // to make it work, we set m_dropTarget to this special value initially
 337         // and check for it in our SetDropTarget()
 338         m_dropTarget = wxRICHTEXT_DEFAULT_DROPTARGET;
 339     }
 340 #endif // wxUSE_DRAG_AND_DROP && wxUSE_RICHEDIT
 341
 342     return true;
 343 }
 344
 345 // returns true if the platform should explicitly apply a theme border
 346 bool wxTextCtrl::CanApplyThemeBorder() const
 347 {
 348 #ifdef __WXWINCE__
 349     return false;
 350 #else
 351     // Standard text control already handles theming
 352     return ((GetWindowStyle() & (wxTE_RICH|wxTE_RICH2)) != 0);
 353 #endif
 354 }
 355
 356 bool wxTextCtrl::MSWCreateText(const wxString& value,
 357                                const wxPoint& pos,
 358                                const wxSize& size)
 359 {
 360     // translate wxWin style flags to MSW ones
 361     WXDWORD msStyle = MSWGetCreateWindowFlags();
 362
 363     // do create the control - either an EDIT or RICHEDIT
 364     wxString windowClass = wxT("EDIT");
 365
 366 #if defined(__POCKETPC__) || defined(__SMARTPHONE__)
 367     // A control that capitalizes the first letter
 368     if ( HasFlag(wxTE_CAPITALIZE) )
 369         windowClass = wxT("CAPEDIT");
 370 #endif
 371
 372 #if wxUSE_RICHEDIT
 373     if ( m_windowStyle & wxTE_AUTO_URL )
 374     {
 375         // automatic URL detection only works in RichEdit 2.0+
 376         m_windowStyle |= wxTE_RICH2;
 377     }
 378
 379     if ( m_windowStyle & wxTE_RICH2 )
 380     {
 381         // using richedit 2.0 implies using wxTE_RICH
 382         m_windowStyle |= wxTE_RICH;
 383     }
 384
 385     // we need to load the richedit DLL before creating the rich edit control
 386     if ( m_windowStyle & wxTE_RICH )
 387     {
 388         // versions 2.0, 3.0 and 4.1 of rich edit are mostly compatible with
 389         // each other but not with version 1.0, so we have separate flags for
 390         // the version 1.0 and the others (and so m_verRichEdit may be 0 (plain
 391         // EDIT control), 1 for version 1.0 or 2 for any higher version)
 392         //
 393         // notice that 1.0 has no Unicode support at all so in Unicode build we
 394         // must use another version
 395
 396 #if wxUSE_UNICODE
 397         m_verRichEdit = 2;
 398 #else // !wxUSE_UNICODE
 399         m_verRichEdit = m_windowStyle & wxTE_RICH2 ? 2 : 1;
 400 #endif // wxUSE_UNICODE/!wxUSE_UNICODE
 401
 402 #if wxUSE_INKEDIT
 403         // First test if we can load an ink edit control. Normally, all edit
 404         // controls will be made ink edit controls if a tablet environment is
 405         // found (or if msw.inkedit != 0 and the InkEd.dll is present).
 406         // However, an application can veto ink edit controls by either specifying
 407         // msw.inkedit = 0 or by removing wxTE_RICH[2] from the style.
 408         //
 409         if ((wxSystemSettings::HasFeature(wxSYS_TABLET_PRESENT) || wxSystemOptions::GetOptionInt(wxT("msw.inkedit")) != 0) &&
 410             !(wxSystemOptions::HasOption(wxT("msw.inkedit")) && wxSystemOptions::GetOptionInt(wxT("msw.inkedit")) == 0))
 411         {
 412             if (wxRichEditModule::LoadInkEdit())
 413             {
 414                 windowClass = INKEDIT_CLASS;
 415
 416 #if wxUSE_INKEDIT && wxUSE_RICHEDIT
 417                 m_isInkEdit = 1;
 418 #endif
 419
 420                 // Fake rich text version for other calls
 421                 m_verRichEdit = 2;
 422             }
 423         }
 424 #endif
 425
 426         if (!IsInkEdit())
 427         {
 428             if ( m_verRichEdit == 2 )
 429             {
 430                 if ( wxRichEditModule::Load(wxRichEditModule::Version_41) )
 431                 {
 432                     // yes, class name for version 4.1 really is 5.0
 433                     windowClass = _T("RICHEDIT50W");
 434                 }
 435                 else if ( wxRichEditModule::Load(wxRichEditModule::Version_2or3) )
 436                 {
 437                     windowClass = _T("RichEdit20")
 438 #if wxUSE_UNICODE
 439                                 _T("W");
 440 #else // ANSI
 441                                 _T("A");
 442 #endif // Unicode/ANSI
 443                 }
 444                 else // failed to load msftedit.dll and riched20.dll
 445                 {
 446                     m_verRichEdit = 1;
 447                 }
 448             }
 449
 450             if ( m_verRichEdit == 1 )
 451             {
 452                 if ( wxRichEditModule::Load(wxRichEditModule::Version_1) )
 453                 {
 454                     windowClass = _T("RICHEDIT");
 455                 }
 456                 else // failed to load any richedit control DLL
 457                 {
 458                     // only give the error msg once if the DLL can't be loaded
 459                     static bool s_errorGiven = false; // MT ok as only used by GUI
 460
 461                     if ( !s_errorGiven )
 462                     {
 463                         wxLogError(_("Impossible to create a rich edit control, using simple text control instead. Please reinstall riched32.dll"));
 464
 465                         s_errorGiven = true;
 466                     }
 467
 468                     m_verRichEdit = 0;
 469                 }
 470             }
 471         } // !useInkEdit
 472     }
 473 #endif // wxUSE_RICHEDIT
 474
 475     // we need to turn '\n's into "\r\n"s for the multiline controls
 476     wxString valueWin;
 477     if ( m_windowStyle & wxTE_MULTILINE )
 478     {
 479         valueWin = wxTextFile::Translate(value, wxTextFileType_Dos);
 480     }
 481     else // single line
 482     {
 483         valueWin = value;
 484     }
 485
 486     if ( !MSWCreateControl(windowClass.wx_str(), msStyle, pos, size, valueWin) )
 487         return false;
 488
 489 #if wxUSE_RICHEDIT
 490     if (IsRich())
 491     {
 492 #if wxUSE_INKEDIT
 493         if (IsInkEdit())
 494         {
 495             // Pass IEM_InsertText (0) as wParam, in order to have the ink always
 496             // converted to text.
 497             ::SendMessage(GetHwnd(), EM_SETINKINSERTMODE, 0, 0);
 498
 499             // Make sure the mouse can be used for input
 500             ::SendMessage(GetHwnd(), EM_SETUSEMOUSEFORINPUT, 1, 0);
 501         }
 502 #endif
 503
 504         // enable the events we're interested in: we want to get EN_CHANGE as
 505         // for the normal controls
 506         LPARAM mask = ENM_CHANGE;
 507
 508         if (GetRichVersion() == 1 && !IsInkEdit())
 509         {
 510             // we also need EN_MSGFILTER for richedit 1.0 for the reasons
 511             // explained in its handler
 512            mask |= ENM_MOUSEEVENTS;
 513
 514            // we also need to force the appearance of the vertical scrollbar
 515            // initially as otherwise the control doesn't refresh correctly
 516            // after resize: but once the vertical scrollbar had been shown
 517            // (even if it's subsequently hidden) it does
 518            //
 519            // this is clearly a bug and for now it has been only noticed under
 520            // Windows XP, so if we're sure it works correctly under other
 521            // systems we could do this only for XP
 522            SetSize(-1, 1); // 1 is small enough to force vert scrollbar
 523            SetInitialSize(size);
 524         }
 525         else if ( m_windowStyle & wxTE_AUTO_URL )
 526         {
 527             mask |= ENM_LINK;
 528
 529             ::SendMessage(GetHwnd(), EM_AUTOURLDETECT, TRUE, 0);
 530         }
 531
 532         ::SendMessage(GetHwnd(), EM_SETEVENTMASK, 0, mask);
 533     }
 534 #endif // wxUSE_RICHEDIT
 535
 536 #ifndef __WXWINCE__
 537     // Without this, if we pass the size in the constructor and then don't change it,
 538     // the themed borders will be drawn incorrectly.
 539     SetWindowPos(GetHwnd(), NULL, 0, 0, 0, 0,
 540                 SWP_NOZORDER|SWP_NOMOVE|SWP_NOSIZE|SWP_NOACTIVATE|
 541                 SWP_FRAMECHANGED);
 542 #endif
 543
 544     return true;
 545 }
 546
 547 // Make sure the window style (etc.) reflects the HWND style (roughly)
 548 void wxTextCtrl::AdoptAttributesFromHWND()
 549 {
 550     wxWindow::AdoptAttributesFromHWND();
 551
 552     HWND hWnd = GetHwnd();
 553     long style = ::GetWindowLong(hWnd, GWL_STYLE);
 554
 555     // retrieve the style to see whether this is an edit or richedit ctrl
 556 #if wxUSE_RICHEDIT
 557     wxString classname = wxGetWindowClass(GetHWND());
 558
 559     if ( classname.IsSameAs(_T("EDIT"), false /* no case */) )
 560     {
 561         m_verRichEdit = 0;
 562     }
 563     else // rich edit?
 564     {
 565         wxChar c;
 566         if ( wxSscanf(classname, _T("RichEdit%d0%c"), &m_verRichEdit, &c) != 2 )
 567         {
 568             wxLogDebug(_T("Unknown edit control '%s'."), classname.c_str());
 569
 570             m_verRichEdit = 0;
 571         }
 572     }
 573 #endif // wxUSE_RICHEDIT
 574
 575     if (style & ES_MULTILINE)
 576         m_windowStyle |= wxTE_MULTILINE;
 577     if (style & ES_PASSWORD)
 578         m_windowStyle |= wxTE_PASSWORD;
 579     if (style & ES_READONLY)
 580         m_windowStyle |= wxTE_READONLY;
 581     if (style & ES_WANTRETURN)
 582         m_windowStyle |= wxTE_PROCESS_ENTER;
 583     if (style & ES_CENTER)
 584         m_windowStyle |= wxTE_CENTRE;
 585     if (style & ES_RIGHT)
 586         m_windowStyle |= wxTE_RIGHT;
 587 }
 588
 589 WXDWORD wxTextCtrl::MSWGetStyle(long style, WXDWORD *exstyle) const
 590 {
 591     long msStyle = wxControl::MSWGetStyle(style, exstyle);
 592
 593     // styles which we always add by default
 594     if ( style & wxTE_MULTILINE )
 595     {
 596         msStyle |= ES_MULTILINE | ES_WANTRETURN;
 597         if ( !(style & wxTE_NO_VSCROLL) )
 598         {
 599             // always adjust the vertical scrollbar automatically if we have it
 600             msStyle |= WS_VSCROLL | ES_AUTOVSCROLL;
 601
 602 #if wxUSE_RICHEDIT
 603             // we have to use this style for the rich edit controls because
 604             // without it the vertical scrollbar never appears at all in
 605             // richedit 3.0 because of our ECO_NOHIDESEL hack (search for it)
 606             if ( style & wxTE_RICH2 )
 607             {
 608                 msStyle |= ES_DISABLENOSCROLL;
 609             }
 610 #endif // wxUSE_RICHEDIT
 611         }
 612
 613         style |= wxTE_PROCESS_ENTER;
 614     }
 615     else // !multiline
 616     {
 617         // there is really no reason to not have this style for single line
 618         // text controls
 619         msStyle |= ES_AUTOHSCROLL;
 620     }
 621
 622     // note that wxTE_DONTWRAP is the same as wxHSCROLL so if we have a horz
 623     // scrollbar, there is no wrapping -- which makes sense
 624     if ( style & wxTE_DONTWRAP )
 625     {
 626         // automatically scroll the control horizontally as necessary
 627         //
 628         // NB: ES_AUTOHSCROLL is needed for richedit controls or they don't
 629         //     show horz scrollbar at all, even in spite of WS_HSCROLL, and as
 630         //     it doesn't seem to do any harm for plain edit controls, add it
 631         //     always
 632         msStyle |= WS_HSCROLL | ES_AUTOHSCROLL;
 633     }
 634
 635     if ( style & wxTE_READONLY )
 636         msStyle |= ES_READONLY;
 637
 638     if ( style & wxTE_PASSWORD )
 639         msStyle |= ES_PASSWORD;
 640
 641     if ( style & wxTE_NOHIDESEL )
 642         msStyle |= ES_NOHIDESEL;
 643
 644     // note that we can't do do "& wxTE_LEFT" as wxTE_LEFT == 0
 645     if ( style & wxTE_CENTRE )
 646         msStyle |= ES_CENTER;
 647     else if ( style & wxTE_RIGHT )
 648         msStyle |= ES_RIGHT;
 649     else
 650         msStyle |= ES_LEFT; // ES_LEFT is 0 as well but for consistency...
 651
 652     return msStyle;
 653 }
 654
 655 void wxTextCtrl::SetWindowStyleFlag(long style)
 656 {
 657     // changing the alignment of the control dynamically works under Win2003
 658     // (but not older Windows version: it seems to work under some versions of
 659     // XP but not other ones, and we have no way to determine it so be
 660     // conservative here) and only for plain EDIT controls (not RICH ones) and
 661     // we have to recreate the control to make it always work
 662     if ( IsRich() || wxGetWinVersion() < wxWinVersion_2003 )
 663     {
 664         const long alignMask = wxTE_LEFT | wxTE_CENTRE | wxTE_RIGHT;
 665         if ( (style & alignMask) != (GetWindowStyle() & alignMask) )
 666         {
 667             const wxString value = GetValue();
 668             const wxPoint pos = GetPosition();
 669             const wxSize size = GetSize();
 670
 671             // delete the old window
 672             HWND hwnd = GetHwnd();
 673             DissociateHandle();
 674             ::DestroyWindow(hwnd);
 675
 676             // create the new one with the updated flags
 677             m_windowStyle = style;
 678             MSWCreateText(value, pos, size);
 679
 680             // and make sure it has the same attributes as before
 681             if ( m_hasFont )
 682             {
 683                 // calling SetFont(m_font) would do nothing as the code would
 684                 // notice that the font didn't change, so force it to believe
 685                 // that it did
 686                 wxFont font = m_font;
 687                 m_font = wxNullFont;
 688                 SetFont(font);
 689             }
 690
 691             if ( m_hasFgCol )
 692             {
 693                 wxColour colFg = m_foregroundColour;
 694                 m_foregroundColour = wxNullColour;
 695                 SetForegroundColour(colFg);
 696             }
 697
 698             if ( m_hasBgCol )
 699             {
 700                 wxColour colBg = m_backgroundColour;
 701                 m_backgroundColour = wxNullColour;
 702                 SetBackgroundColour(colBg);
 703             }
 704
 705             // note that text styles are lost but this is probably not a big
 706             // problem: if you use styles, you probably don't use nor change
 707             // alignment flags anyhow
 708
 709             return;
 710         }
 711     }
 712
 713 #if wxUSE_RICHEDIT
 714     // we have to deal with some styles separately because they can't be
 715     // changed by simply calling SetWindowLong(GWL_STYLE) but can be changed
 716     // using richedit-specific EM_SETOPTIONS
 717     if ( IsRich() &&
 718             ((style & wxTE_NOHIDESEL) != (GetWindowStyle() & wxTE_NOHIDESEL)) )
 719     {
 720         bool set = (style & wxTE_NOHIDESEL) != 0;
 721
 722         ::SendMessage(GetHwnd(), EM_SETOPTIONS, set ? ECOOP_OR : ECOOP_AND,
 723                       set ? ECO_NOHIDESEL : ~ECO_NOHIDESEL);
 724     }
 725 #endif // wxUSE_RICHEDIT
 726
 727     wxControl::SetWindowStyleFlag(style);
 728 }
 729
 730 // ----------------------------------------------------------------------------
 731 // set/get the controls text
 732 // ----------------------------------------------------------------------------
 733
 734 bool wxTextCtrl::IsEmpty() const
 735 {
 736     // this is an optimization for multiline controls containing a lot of text
 737     if ( IsMultiLine() && GetNumberOfLines() != 1 )
 738         return false;
 739
 740     return wxTextCtrlBase::IsEmpty();
 741 }
 742
 743 wxString wxTextCtrl::GetValue() const
 744 {
 745     // range 0..-1 is special for GetRange() and means to retrieve all text
 746     return GetRange(0, -1);
 747 }
 748
 749 wxString wxTextCtrl::GetRange(long from, long to) const
 750 {
 751     wxString str;
 752
 753     if ( from >= to && to != -1 )
 754     {
 755         // nothing to retrieve
 756         return str;
 757     }
 758
 759 #if wxUSE_RICHEDIT
 760     if ( IsRich() )
 761     {
 762         int len = GetWindowTextLength(GetHwnd());
 763         if ( len > from )
 764         {
 765             if ( to == -1 )
 766                 to = len;
 767
 768 #if !wxUSE_UNICODE
 769             // we must use EM_STREAMOUT if we don't want to lose all characters
 770             // not representable in the current character set (EM_GETTEXTRANGE
 771             // simply replaces them with question marks...)
 772             if ( GetRichVersion() > 1 )
 773             {
 774                 // we must have some encoding, otherwise any 8bit chars in the
 775                 // control are simply *lost* (replaced by '?')
 776                 wxFontEncoding encoding = wxFONTENCODING_SYSTEM;
 777
 778                 wxFont font = m_defaultStyle.GetFont();
 779                 if ( !font.Ok() )
 780                     font = GetFont();
 781
 782                 if ( font.Ok() )
 783                 {
 784                    encoding = font.GetEncoding();
 785                 }
 786
 787 #if wxUSE_INTL
 788                 if ( encoding == wxFONTENCODING_SYSTEM )
 789                 {
 790                     encoding = wxLocale::GetSystemEncoding();
 791                 }
 792 #endif // wxUSE_INTL
 793
 794                 if ( encoding == wxFONTENCODING_SYSTEM )
 795                 {
 796                     encoding = wxFONTENCODING_ISO8859_1;
 797                 }
 798
 799                 str = StreamOut(encoding);
 800
 801                 if ( !str.empty() )
 802                 {
 803                     // we have to manually extract the required part, luckily
 804                     // this is easy in this case as EOL characters in str are
 805                     // just LFs because we remove CRs in wxRichEditStreamOut
 806                     str = str.Mid(from, to - from);
 807                 }
 808             }
 809
 810             // StreamOut() wasn't used or failed, try to do it in normal way
 811             if ( str.empty() )
 812 #endif // !wxUSE_UNICODE
 813             {
 814                 // alloc one extra WORD as needed by the control
 815                 wxStringBuffer tmp(str, ++len);
 816                 wxChar *p = tmp;
 817
 818                 TEXTRANGE textRange;
 819                 textRange.chrg.cpMin = from;
 820                 textRange.chrg.cpMax = to;
 821                 textRange.lpstrText = p;
 822
 823                 (void)::SendMessage(GetHwnd(), EM_GETTEXTRANGE,
 824                                     0, (LPARAM)&textRange);
 825
 826                 if ( m_verRichEdit > 1 )
 827                 {
 828                     // RichEdit 2.0 uses just CR ('\r') for the
 829                     // newlines which is neither Unix nor Windows
 830                     // style - convert it to something reasonable
 831                     for ( ; *p; p++ )
 832                     {
 833                         if ( *p == _T('\r') )
 834                             *p = _T('\n');
 835                     }
 836                 }
 837             }
 838
 839             if ( m_verRichEdit == 1 )
 840             {
 841                 // convert to the canonical form - see comment below
 842                 str = wxTextFile::Translate(str, wxTextFileType_Unix);
 843             }
 844         }
 845         //else: no text at all, leave the string empty
 846     }
 847     else
 848 #endif // wxUSE_RICHEDIT
 849     {
 850         // retrieve all text
 851         str = wxGetWindowText(GetHWND());
 852
 853         // need only a range?
 854         if ( from < to )
 855         {
 856             str = str.Mid(from, to - from);
 857         }
 858
 859         // WM_GETTEXT uses standard DOS CR+LF (\r\n) convention - convert to the
 860         // canonical one (same one as above) for consistency with the other kinds
 861         // of controls and, more importantly, with the other ports
 862         str = wxTextFile::Translate(str, wxTextFileType_Unix);
 863     }
 864
 865     return str;
 866 }
 867
 868 void wxTextCtrl::DoSetValue(const wxString& value, int flags)
 869 {
 870     // if the text is long enough, it's faster to just set it instead of first
 871     // comparing it with the old one (chances are that it will be different
 872     // anyhow, this comparison is there to avoid flicker for small single-line
 873     // edit controls mostly)
 874     if ( (value.length() > 0x400) || (value != GetValue()) )
 875     {
 876         DoWriteText(value, flags /* doesn't include SelectionOnly here */);
 877
 878         // mark the control as being not dirty - we changed its text, not the
 879         // user
 880         DiscardEdits();
 881
 882         // for compatibility, don't move the cursor when doing SetValue()
 883         SetInsertionPoint(0);
 884     }
 885     else // same text
 886     {
 887         // still reset the modified flag even if the value didn't really change
 888         // because now it comes from the program and not the user (and do it
 889         // before generating the event so that the event handler could get the
 890         // expected value from IsModified())
 891         DiscardEdits();
 892
 893         // still send an event for consistency
 894         if (flags & SetValue_SendEvent)
 895             SendUpdateEvent();
 896     }
 897 }
 898
 899 #if wxUSE_RICHEDIT && (!wxUSE_UNICODE || wxUSE_UNICODE_MSLU)
 900
 901 // TODO: using memcpy() would improve performance a lot for big amounts of text
 902
 903 DWORD CALLBACK
 904 wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb)
 905 {
 906     *pcb = 0;
 907
 908     const wchar_t ** const ppws = (const wchar_t **)dwCookie;
 909
 910     wchar_t *wbuf = (wchar_t *)buf;
 911     const wchar_t *wpc = *ppws;
 912     while ( cb && *wpc )
 913     {
 914         *wbuf++ = *wpc++;
 915
 916         cb -= sizeof(wchar_t);
 917         (*pcb) += sizeof(wchar_t);
 918     }
 919
 920     *ppws = wpc;
 921
 922     return 0;
 923 }
 924
 925 // helper struct used to pass parameters from wxTextCtrl to wxRichEditStreamOut
 926 struct wxStreamOutData
 927 {
 928     wchar_t *wpc;
 929     size_t len;
 930 };
 931
 932 DWORD CALLBACK
 933 wxRichEditStreamOut(DWORD_PTR dwCookie, BYTE *buf, LONG cb, LONG *pcb)
 934 {
 935     *pcb = 0;
 936
 937     wxStreamOutData *data = (wxStreamOutData *)dwCookie;
 938
 939     const wchar_t *wbuf = (const wchar_t *)buf;
 940     wchar_t *wpc = data->wpc;
 941     while ( cb )
 942     {
 943         wchar_t wch = *wbuf++;
 944
 945         // turn "\r\n" into "\n" on the fly
 946         if ( wch != L'\r' )
 947             *wpc++ = wch;
 948         else
 949             data->len--;
 950
 951         cb -= sizeof(wchar_t);
 952         (*pcb) += sizeof(wchar_t);
 953     }
 954
 955     data->wpc = wpc;
 956
 957     return 0;
 958 }
 959
 960
 961 #if wxUSE_UNICODE_MSLU
 962     #define UNUSED_IF_MSLU(param)
 963 #else
 964     #define UNUSED_IF_MSLU(param) param
 965 #endif
 966
 967 bool
 968 wxTextCtrl::StreamIn(const wxString& value,
 969                      wxFontEncoding UNUSED_IF_MSLU(encoding),
 970                      bool selectionOnly)
 971 {
 972 #if wxUSE_UNICODE_MSLU
 973     const wchar_t *wpc = value.c_str();
 974 #else // !wxUSE_UNICODE_MSLU
 975     wxCSConv conv(encoding);
 976
 977     const size_t len = conv.MB2WC(NULL, value.mb_str(), value.length());
 978
 979     if (len == wxCONV_FAILED)
 980         return false;
 981
 982 #if wxUSE_WCHAR_T
 983     wxWCharBuffer wchBuf(len);
 984     wchar_t *wpc = wchBuf.data();
 985 #else
 986     wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
 987     wchar_t *wpc = wchBuf;
 988 #endif
 989
 990     conv.MB2WC(wpc, value.mb_str(), value.length());
 991 #endif // wxUSE_UNICODE_MSLU
 992
 993     // finally, stream it in the control
 994     EDITSTREAM eds;
 995     wxZeroMemory(eds);
 996     eds.dwCookie = (DWORD)&wpc;
 997     // the cast below is needed for broken (very) old mingw32 headers
 998     eds.pfnCallback = (EDITSTREAMCALLBACK)wxRichEditStreamIn;
 999
1000     // same problem as in DoWriteText(): we can get multiple events here
1001     UpdatesCountFilter ucf(m_updatesCount);
1002
1003     ::SendMessage(GetHwnd(), EM_STREAMIN,
1004                   SF_TEXT |
1005                   SF_UNICODE |
1006                   (selectionOnly ? SFF_SELECTION : 0),
1007                   (LPARAM)&eds);
1008
1009     // It's okay for EN_UPDATE to not be sent if the selection is empty and
1010     // the text is empty, otherwise warn the programmer about it.
1011     wxASSERT_MSG( ucf.GotUpdate() || ( !HasSelection() && value.empty() ),
1012                   _T("EM_STREAMIN didn't send EN_UPDATE?") );
1013
1014     if ( eds.dwError )
1015     {
1016         wxLogLastError(_T("EM_STREAMIN"));
1017     }
1018
1019 #if !wxUSE_WCHAR_T
1020     free(wchBuf);
1021 #endif // !wxUSE_WCHAR_T
1022
1023     return true;
1024 }
1025
1026 #if !wxUSE_UNICODE_MSLU
1027
1028 wxString
1029 wxTextCtrl::StreamOut(wxFontEncoding encoding, bool selectionOnly) const
1030 {
1031     wxString out;
1032
1033     const int len = GetWindowTextLength(GetHwnd());
1034
1035 #if wxUSE_WCHAR_T
1036     wxWCharBuffer wchBuf(len);
1037     wchar_t *wpc = wchBuf.data();
1038 #else
1039     wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
1040     wchar_t *wpc = wchBuf;
1041 #endif
1042
1043     wxStreamOutData data;
1044     data.wpc = wpc;
1045     data.len = len;
1046
1047     EDITSTREAM eds;
1048     wxZeroMemory(eds);
1049     eds.dwCookie = (DWORD)&data;
1050     eds.pfnCallback = wxRichEditStreamOut;
1051
1052     ::SendMessage
1053       (
1054         GetHwnd(),
1055         EM_STREAMOUT,
1056         SF_TEXT | SF_UNICODE | (selectionOnly ? SFF_SELECTION : 0),
1057         (LPARAM)&eds
1058       );
1059
1060     if ( eds.dwError )
1061     {
1062         wxLogLastError(_T("EM_STREAMOUT"));
1063     }
1064     else // streamed out ok
1065     {
1066         // NUL-terminate the string because its length could have been
1067         // decreased by wxRichEditStreamOut
1068         *(wchBuf.data() + data.len) = L'\0';
1069
1070         // now convert to the given encoding (this is a possibly lossful
1071         // conversion but what else can we do)
1072         wxCSConv conv(encoding);
1073         size_t lenNeeded = conv.WC2MB(NULL, wchBuf, 0);
1074
1075         if ( lenNeeded != wxCONV_FAILED && lenNeeded++ )
1076         {
1077             conv.WC2MB(wxStringBuffer(out, lenNeeded), wchBuf, lenNeeded);
1078         }
1079     }
1080
1081 #if !wxUSE_WCHAR_T
1082     free(wchBuf);
1083 #endif // !wxUSE_WCHAR_T
1084
1085     return out;
1086 }
1087
1088 #endif // !wxUSE_UNICODE_MSLU
1089
1090 #endif // wxUSE_RICHEDIT
1091
1092 void wxTextCtrl::WriteText(const wxString& value)
1093 {
1094     DoWriteText(value);
1095 }
1096
1097 void wxTextCtrl::DoWriteText(const wxString& value, int flags)
1098 {
1099     bool selectionOnly = (flags & SetValue_SelectionOnly) != 0;
1100     wxString valueDos;
1101     if ( m_windowStyle & wxTE_MULTILINE )
1102         valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
1103     else
1104         valueDos = value;
1105
1106 #if wxUSE_RICHEDIT
1107     // there are several complications with the rich edit controls here
1108     bool done = false;
1109     if ( IsRich() )
1110     {
1111         // first, ensure that the new text will be in the default style
1112         if ( !m_defaultStyle.IsDefault() )
1113         {
1114             long start, end;
1115             GetSelection(&start, &end);
1116             SetStyle(start, end, m_defaultStyle);
1117         }
1118
1119 #if wxUSE_UNICODE_MSLU
1120         // RichEdit doesn't have Unicode version of EM_REPLACESEL on Win9x,
1121         // but EM_STREAMIN works
1122         if ( wxUsingUnicowsDll() && GetRichVersion() > 1 )
1123         {
1124            done = StreamIn(valueDos, wxFONTENCODING_SYSTEM, selectionOnly);
1125         }
1126 #endif // wxUSE_UNICODE_MSLU
1127
1128 #if !wxUSE_UNICODE
1129         // next check if the text we're inserting must be shown in a non
1130         // default charset -- this only works for RichEdit > 1.0
1131         if ( GetRichVersion() > 1 )
1132         {
1133             wxFont font = m_defaultStyle.GetFont();
1134             if ( !font.Ok() )
1135                 font = GetFont();
1136
1137             if ( font.Ok() )
1138             {
1139                wxFontEncoding encoding = font.GetEncoding();
1140                if ( encoding != wxFONTENCODING_SYSTEM )
1141                {
1142                    // we have to use EM_STREAMIN to force richedit control 2.0+
1143                    // to show any text in the non default charset -- otherwise
1144                    // it thinks it knows better than we do and always shows it
1145                    // in the default one
1146                    done = StreamIn(valueDos, encoding, selectionOnly);
1147                }
1148             }
1149         }
1150 #endif // !wxUSE_UNICODE
1151     }
1152
1153     if ( !done )
1154 #endif // wxUSE_RICHEDIT
1155     {
1156         // in some cases we get 2 EN_CHANGE notifications after the SendMessage
1157         // call (this happens for plain EDITs with EM_REPLACESEL and under some
1158         // -- undetermined -- conditions with rich edit) and sometimes we don't
1159         // get any events at all (plain EDIT with WM_SETTEXT), so ensure that
1160         // we generate exactly one of them by ignoring all but the first one in
1161         // SendUpdateEvent() and generating one ourselves if we hadn't got any
1162         // notifications from Windows
1163         if ( !(flags & SetValue_SendEvent) )
1164             m_updatesCount = -2;        // suppress any update event
1165
1166         UpdatesCountFilter ucf(m_updatesCount);
1167
1168         ::SendMessage(GetHwnd(), selectionOnly ? EM_REPLACESEL : WM_SETTEXT,
1169                       // EM_REPLACESEL takes 1 to indicate the operation should be redoable
1170                       selectionOnly ? 1 : 0, (LPARAM)valueDos.wx_str());
1171
1172         if ( !ucf.GotUpdate() && (flags & SetValue_SendEvent) )
1173         {
1174             SendUpdateEvent();
1175         }
1176     }
1177 }
1178
1179 void wxTextCtrl::AppendText(const wxString& text)
1180 {
1181     wxTextEntry::AppendText(text);
1182
1183 #if wxUSE_RICHEDIT
1184     // don't do this if we're frozen, saves some time
1185     if ( !IsFrozen() && IsMultiLine() && GetRichVersion() > 1 )
1186     {
1187         // setting the caret to the end and showing it simply doesn't work for
1188         // RichEdit 2.0 -- force it to still do what we want
1189         ::SendMessage(GetHwnd(), EM_LINESCROLL, 0, GetNumberOfLines());
1190     }
1191 #endif // wxUSE_RICHEDIT
1192 }
1193
1194 void wxTextCtrl::Clear()
1195 {
1196     ::SetWindowText(GetHwnd(), wxEmptyString);
1197
1198     if ( IsMultiLine() && !IsRich() )
1199     {
1200         // rich edit controls send EN_UPDATE from WM_SETTEXT handler themselves
1201         // but the normal ones don't -- make Clear() behaviour consistent by
1202         // always sending this event
1203         SendUpdateEvent();
1204     }
1205 }
1206
1207 #ifdef __WIN32__
1208
1209 bool wxTextCtrl::EmulateKeyPress(const wxKeyEvent& event)
1210 {
1211     SetFocus();
1212
1213     size_t lenOld = GetValue().length();
1214
1215     wxUint32 code = event.GetRawKeyCode();
1216     ::keybd_event((BYTE)code, 0, 0 /* key press */, 0);
1217     ::keybd_event((BYTE)code, 0, KEYEVENTF_KEYUP, 0);
1218
1219     // assume that any alphanumeric key changes the total number of characters
1220     // in the control - this should work in 99% of cases
1221     return GetValue().length() != lenOld;
1222 }
1223
1224 #endif // __WIN32__
1225
1226 // ----------------------------------------------------------------------------
1227 // Accessors
1228 // ----------------------------------------------------------------------------
1229
1230 void wxTextCtrl::SetInsertionPointEnd()
1231 {
1232     // we must not do anything if the caret is already there because calling
1233     // SetInsertionPoint() thaws the controls if Freeze() had been called even
1234     // if it doesn't actually move the caret anywhere and so the simple fact of
1235     // doing it results in horrible flicker when appending big amounts of text
1236     // to the control in a few chunks (see DoAddText() test in the text sample)
1237     const wxTextPos lastPosition = GetLastPosition();
1238     if ( GetInsertionPoint() == lastPosition )
1239     {
1240         return;
1241     }
1242
1243     SetInsertionPoint(lastPosition);
1244 }
1245
1246 long wxTextCtrl::GetInsertionPoint() const
1247 {
1248 #if wxUSE_RICHEDIT
1249     if ( IsRich() )
1250     {
1251         CHARRANGE range;
1252         range.cpMin = 0;
1253         range.cpMax = 0;
1254         ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
1255         return range.cpMin;
1256     }
1257 #endif // wxUSE_RICHEDIT
1258
1259     return wxTextEntry::GetInsertionPoint();
1260 }
1261
1262 wxTextPos wxTextCtrl::GetLastPosition() const
1263 {
1264     if ( IsMultiLine() )
1265     {
1266         int numLines = GetNumberOfLines();
1267         long posStartLastLine = XYToPosition(0, numLines - 1);
1268
1269         long lenLastLine = GetLengthOfLineContainingPos(posStartLastLine);
1270
1271         return posStartLastLine + lenLastLine;
1272     }
1273
1274     return wxTextEntry::GetLastPosition();
1275 }
1276
1277 // If the return values from and to are the same, there is no
1278 // selection.
1279 void wxTextCtrl::GetSelection(long *from, long *to) const
1280 {
1281 #if wxUSE_RICHEDIT
1282     if ( IsRich() )
1283     {
1284         CHARRANGE charRange;
1285         ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &charRange);
1286
1287         *from = charRange.cpMin;
1288         *to = charRange.cpMax;
1289     }
1290     else
1291 #endif // !wxUSE_RICHEDIT
1292     {
1293         wxTextEntry::GetSelection(from, to);
1294     }
1295 }
1296
1297 // ----------------------------------------------------------------------------
1298 // selection
1299 // ----------------------------------------------------------------------------
1300
1301 void wxTextCtrl::DoSetSelection(long from, long to, int flags)
1302 {
1303     HWND hWnd = GetHwnd();
1304
1305 #if wxUSE_RICHEDIT
1306     if ( IsRich() )
1307     {
1308         // if from and to are both -1, it means (in wxWidgets) that all text
1309         // should be selected, translate this into Windows convention
1310         if ( (from == -1) && (to == -1) )
1311         {
1312             from = 0;
1313         }
1314
1315         CHARRANGE range;
1316         range.cpMin = from;
1317         range.cpMax = to;
1318         ::SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM)&range);
1319     }
1320     else
1321 #endif // wxUSE_RICHEDIT
1322     {
1323         wxTextEntry::DoSetSelection(from, to, flags);
1324     }
1325
1326     if ( (flags & SetSel_Scroll) && !IsFrozen() )
1327     {
1328 #if wxUSE_RICHEDIT
1329         // richedit 3.0 (i.e. the version living in riched20.dll distributed
1330         // with Windows 2000 and beyond) doesn't honour EM_SCROLLCARET when
1331         // emulating richedit 2.0 unless the control has focus or ECO_NOHIDESEL
1332         // option is set (but it does work ok in richedit 1.0 mode...)
1333         //
1334         // so to make it work we either need to give focus to it here which
1335         // will probably create many problems (dummy focus events; window
1336         // containing the text control being brought to foreground
1337         // unexpectedly; ...) or to temporarily set ECO_NOHIDESEL which may
1338         // create other problems too -- and in fact it does because if we turn
1339         // on/off this style while appending the text to the control, the
1340         // vertical scrollbar never appears in it even if we append tons of
1341         // text and to work around this the only solution I found was to use
1342         // ES_DISABLENOSCROLL
1343         //
1344         // this is very ugly but I don't see any other way to make this work
1345         long style = 0;
1346         if ( GetRichVersion() > 1 )
1347         {
1348             if ( !HasFlag(wxTE_NOHIDESEL) )
1349             {
1350                 // setting ECO_NOHIDESEL also sets WS_VISIBLE and possibly
1351                 // others, remember the style so we can reset it later if needed
1352                 style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1353                 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1354                               ECOOP_OR, ECO_NOHIDESEL);
1355             }
1356             //else: everything is already ok
1357         }
1358 #endif // wxUSE_RICHEDIT
1359
1360         ::SendMessage(hWnd, EM_SCROLLCARET, 0, (LPARAM)0);
1361
1362 #if wxUSE_RICHEDIT
1363         // restore ECO_NOHIDESEL if we changed it
1364         if ( GetRichVersion() > 1 && !HasFlag(wxTE_NOHIDESEL) )
1365         {
1366             ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1367                           ECOOP_AND, ~ECO_NOHIDESEL);
1368             if ( style != ::GetWindowLong(GetHwnd(), GWL_STYLE) )
1369                 ::SetWindowLong(GetHwnd(), GWL_STYLE, style);
1370         }
1371 #endif // wxUSE_RICHEDIT
1372     }
1373 }
1374
1375 // ----------------------------------------------------------------------------
1376 // Working with files
1377 // ----------------------------------------------------------------------------
1378
1379 bool wxTextCtrl::DoLoadFile(const wxString& file, int fileType)
1380 {
1381     if ( wxTextCtrlBase::DoLoadFile(file, fileType) )
1382     {
1383         // update the size limit if needed
1384         AdjustSpaceLimit();
1385
1386         return true;
1387     }
1388
1389     return false;
1390 }
1391
1392 // ----------------------------------------------------------------------------
1393 // dirty status
1394 // ----------------------------------------------------------------------------
1395
1396 bool wxTextCtrl::IsModified() const
1397 {
1398     return ::SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0;
1399 }
1400
1401 void wxTextCtrl::MarkDirty()
1402 {
1403     ::SendMessage(GetHwnd(), EM_SETMODIFY, TRUE, 0);
1404 }
1405
1406 void wxTextCtrl::DiscardEdits()
1407 {
1408     ::SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0);
1409 }
1410
1411 // ----------------------------------------------------------------------------
1412 // Positions <-> coords
1413 // ----------------------------------------------------------------------------
1414
1415 int wxTextCtrl::GetNumberOfLines() const
1416 {
1417     return (int)::SendMessage(GetHwnd(), EM_GETLINECOUNT, 0, 0);
1418 }
1419
1420 long wxTextCtrl::XYToPosition(long x, long y) const
1421 {
1422     // This gets the char index for the _beginning_ of this line
1423     long charIndex = ::SendMessage(GetHwnd(), EM_LINEINDEX, y, 0);
1424
1425     return charIndex + x;
1426 }
1427
1428 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
1429 {
1430     HWND hWnd = GetHwnd();
1431
1432     // This gets the line number containing the character
1433     long lineNo;
1434 #if wxUSE_RICHEDIT
1435     if ( IsRich() )
1436     {
1437         lineNo = ::SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, pos);
1438     }
1439     else
1440 #endif // wxUSE_RICHEDIT
1441     {
1442         lineNo = ::SendMessage(hWnd, EM_LINEFROMCHAR, pos, 0);
1443     }
1444
1445     if ( lineNo == -1 )
1446     {
1447         // no such line
1448         return false;
1449     }
1450
1451     // This gets the char index for the _beginning_ of this line
1452     long charIndex = ::SendMessage(hWnd, EM_LINEINDEX, lineNo, 0);
1453     if ( charIndex == -1 )
1454     {
1455         return false;
1456     }
1457
1458     // The X position must therefore be the different between pos and charIndex
1459     if ( x )
1460         *x = pos - charIndex;
1461     if ( y )
1462         *y = lineNo;
1463
1464     return true;
1465 }
1466
1467 wxTextCtrlHitTestResult
1468 wxTextCtrl::HitTest(const wxPoint& pt, long *posOut) const
1469 {
1470     // first get the position from Windows
1471     LPARAM lParam;
1472
1473 #if wxUSE_RICHEDIT
1474     POINTL ptl;
1475     if ( IsRich() )
1476     {
1477         // for rich edit controls the position is passed iva the struct fields
1478         ptl.x = pt.x;
1479         ptl.y = pt.y;
1480         lParam = (LPARAM)&ptl;
1481     }
1482     else
1483 #endif // wxUSE_RICHEDIT
1484     {
1485         // for the plain ones, we are limited to 16 bit positions which are
1486         // combined in a single 32 bit value
1487         lParam = MAKELPARAM(pt.x, pt.y);
1488     }
1489
1490     LRESULT pos = ::SendMessage(GetHwnd(), EM_CHARFROMPOS, 0, lParam);
1491
1492     if ( pos == -1 )
1493     {
1494         // this seems to indicate an error...
1495         return wxTE_HT_UNKNOWN;
1496     }
1497
1498 #if wxUSE_RICHEDIT
1499     if ( !IsRich() )
1500 #endif // wxUSE_RICHEDIT
1501     {
1502         // for plain EDIT controls the higher word contains something else
1503         pos = LOWORD(pos);
1504     }
1505
1506
1507     // next determine where it is relatively to our point: EM_CHARFROMPOS
1508     // always returns the closest character but we need to be more precise, so
1509     // double check that we really are where it pretends
1510     POINTL ptReal;
1511
1512 #if wxUSE_RICHEDIT
1513     // FIXME: we need to distinguish between richedit 2 and 3 here somehow but
1514     //        we don't know how to do it
1515     if ( IsRich() )
1516     {
1517         ::SendMessage(GetHwnd(), EM_POSFROMCHAR, (WPARAM)&ptReal, pos);
1518     }
1519     else
1520 #endif // wxUSE_RICHEDIT
1521     {
1522         LRESULT lRc = ::SendMessage(GetHwnd(), EM_POSFROMCHAR, pos, 0);
1523
1524         if ( lRc == -1 )
1525         {
1526             // this is apparently returned when pos corresponds to the last
1527             // position
1528             ptReal.x =
1529             ptReal.y = 0;
1530         }
1531         else
1532         {
1533             ptReal.x = LOWORD(lRc);
1534             ptReal.y = HIWORD(lRc);
1535         }
1536     }
1537
1538     wxTextCtrlHitTestResult rc;
1539
1540     if ( pt.y > ptReal.y + GetCharHeight() )
1541         rc = wxTE_HT_BELOW;
1542     else if ( pt.x > ptReal.x + GetCharWidth() )
1543         rc = wxTE_HT_BEYOND;
1544     else
1545         rc = wxTE_HT_ON_TEXT;
1546
1547     if ( posOut )
1548         *posOut = pos;
1549
1550     return rc;
1551 }
1552
1553 // ----------------------------------------------------------------------------
1554 //
1555 // ----------------------------------------------------------------------------
1556
1557 void wxTextCtrl::ShowPosition(long pos)
1558 {
1559     HWND hWnd = GetHwnd();
1560
1561     // To scroll to a position, we pass the number of lines and characters
1562     // to scroll *by*. This means that we need to:
1563     // (1) Find the line position of the current line.
1564     // (2) Find the line position of pos.
1565     // (3) Scroll by (pos - current).
1566     // For now, ignore the horizontal scrolling.
1567
1568     // Is this where scrolling is relative to - the line containing the caret?
1569     // Or is the first visible line??? Try first visible line.
1570 //    int currentLineLineNo1 = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, -1, 0L);
1571
1572     int currentLineLineNo = (int)::SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, 0, 0);
1573
1574     int specifiedLineLineNo = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, pos, 0);
1575
1576     int linesToScroll = specifiedLineLineNo - currentLineLineNo;
1577
1578     if (linesToScroll != 0)
1579       ::SendMessage(hWnd, EM_LINESCROLL, 0, linesToScroll);
1580 }
1581
1582 long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const
1583 {
1584     return ::SendMessage(GetHwnd(), EM_LINELENGTH, pos, 0);
1585 }
1586
1587 int wxTextCtrl::GetLineLength(long lineNo) const
1588 {
1589     long pos = XYToPosition(0, lineNo);
1590
1591     return GetLengthOfLineContainingPos(pos);
1592 }
1593
1594 wxString wxTextCtrl::GetLineText(long lineNo) const
1595 {
1596     size_t len = (size_t)GetLineLength(lineNo) + 1;
1597
1598     // there must be at least enough place for the length WORD in the
1599     // buffer
1600     len += sizeof(WORD);
1601
1602     wxString str;
1603     {
1604         wxStringBufferLength tmp(str, len);
1605         wxChar *buf = tmp;
1606
1607         *(WORD *)buf = (WORD)len;
1608         len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf);
1609
1610 #if wxUSE_RICHEDIT
1611         if ( IsRich() )
1612         {
1613             // remove the '\r' returned by the rich edit control, the user code
1614             // should never see it
1615             if ( buf[len - 2] == _T('\r') && buf[len - 1] == _T('\n') )
1616             {
1617                 // richedit 1.0 uses "\r\n" as line terminator, so remove "\r"
1618                 // here and "\n" below
1619                 buf[len - 2] = _T('\n');
1620                 len--;
1621             }
1622             else if ( buf[len - 1] == _T('\r') )
1623             {
1624                 // richedit 2.0+ uses only "\r", replace it with "\n"
1625                 buf[len - 1] = _T('\n');
1626             }
1627         }
1628 #endif // wxUSE_RICHEDIT
1629
1630         // remove the '\n' at the end, if any (this is how this function is
1631         // supposed to work according to the docs)
1632         if ( buf[len - 1] == _T('\n') )
1633         {
1634             len--;
1635         }
1636
1637         buf[len] = 0;
1638         tmp.SetLength(len);
1639     }
1640
1641     return str;
1642 }
1643
1644 void wxTextCtrl::SetMaxLength(unsigned long len)
1645 {
1646 #if wxUSE_RICHEDIT
1647     if ( IsRich() )
1648     {
1649         ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, len ? len : 0x7fffffff);
1650     }
1651     else
1652 #endif // wxUSE_RICHEDIT
1653     {
1654         wxTextEntry::SetMaxLength(len);
1655     }
1656 }
1657
1658 // ----------------------------------------------------------------------------
1659 // Undo/redo
1660 // ----------------------------------------------------------------------------
1661
1662 void wxTextCtrl::Redo()
1663 {
1664 #if wxUSE_RICHEDIT
1665     if ( GetRichVersion() > 1 )
1666     {
1667         ::SendMessage(GetHwnd(), EM_REDO, 0, 0);
1668         return;
1669     }
1670 #endif // wxUSE_RICHEDIT
1671
1672     wxTextEntry::Redo();
1673 }
1674
1675 bool wxTextCtrl::CanRedo() const
1676 {
1677 #if wxUSE_RICHEDIT
1678     if ( GetRichVersion() > 1 )
1679         return ::SendMessage(GetHwnd(), EM_CANREDO, 0, 0) != 0;
1680 #endif // wxUSE_RICHEDIT
1681
1682     return wxTextEntry::CanRedo();
1683 }
1684
1685 // ----------------------------------------------------------------------------
1686 // caret handling (Windows only)
1687 // ----------------------------------------------------------------------------
1688
1689 bool wxTextCtrl::ShowNativeCaret(bool show)
1690 {
1691     if ( show != m_isNativeCaretShown )
1692     {
1693         if ( !(show ? ::ShowCaret(GetHwnd()) : ::HideCaret(GetHwnd())) )
1694         {
1695             // not an error, may simply indicate that it's not shown/hidden
1696             // yet (i.e. it had been hidden/shown 2 times before)
1697             return false;
1698         }
1699
1700         m_isNativeCaretShown = show;
1701     }
1702
1703     return true;
1704 }
1705
1706 // ----------------------------------------------------------------------------
1707 // implementation details
1708 // ----------------------------------------------------------------------------
1709
1710 void wxTextCtrl::Command(wxCommandEvent & event)
1711 {
1712     SetValue(event.GetString());
1713     ProcessCommand (event);
1714 }
1715
1716 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
1717 {
1718     // By default, load the first file into the text window.
1719     if (event.GetNumberOfFiles() > 0)
1720     {
1721         LoadFile(event.GetFiles()[0]);
1722     }
1723 }
1724
1725 // ----------------------------------------------------------------------------
1726 // kbd input processing
1727 // ----------------------------------------------------------------------------
1728
1729 bool wxTextCtrl::MSWShouldPreProcessMessage(WXMSG* msg)
1730 {
1731     // check for our special keys here: if we don't do it and the parent frame
1732     // uses them as accelerators, they wouldn't work at all, so we disable
1733     // usual preprocessing for them
1734     if ( msg->message == WM_KEYDOWN )
1735     {
1736         const WPARAM vkey = msg->wParam;
1737         if ( HIWORD(msg->lParam) & KF_ALTDOWN )
1738         {
1739             // Alt-Backspace is accelerator for "Undo"
1740             if ( vkey == VK_BACK )
1741                 return false;
1742         }
1743         else // no Alt
1744         {
1745             // we want to process some Ctrl-foo and Shift-bar but no key
1746             // combinations without either Ctrl or Shift nor with both of them
1747             // pressed
1748             const int ctrl = wxIsCtrlDown(),
1749                       shift = wxIsShiftDown();
1750             switch ( ctrl + shift )
1751             {
1752                 default:
1753                     wxFAIL_MSG( _T("how many modifiers have we got?") );
1754                     // fall through
1755
1756                 case 0:
1757                     if ( IsMultiLine() && vkey == VK_RETURN )
1758                         return false;
1759                     // fall through
1760                 case 2:
1761                     break;
1762
1763                 case 1:
1764                     // either Ctrl or Shift pressed
1765                     if ( ctrl )
1766                     {
1767                         switch ( vkey )
1768                         {
1769                             case 'C':
1770                             case 'V':
1771                             case 'X':
1772                             case VK_INSERT:
1773                             case VK_DELETE:
1774                             case VK_HOME:
1775                             case VK_END:
1776                                 return false;
1777                         }
1778                     }
1779                     else // Shift is pressed
1780                     {
1781                         if ( vkey == VK_INSERT || vkey == VK_DELETE )
1782                             return false;
1783                     }
1784             }
1785         }
1786     }
1787
1788     return wxControl::MSWShouldPreProcessMessage(msg);
1789 }
1790
1791 void wxTextCtrl::OnChar(wxKeyEvent& event)
1792 {
1793     switch ( event.GetKeyCode() )
1794     {
1795         case WXK_RETURN:
1796             {
1797                 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1798                 InitCommandEvent(event);
1799                 event.SetString(GetValue());
1800                 if ( HandleWindowEvent(event) )
1801                 if ( !HasFlag(wxTE_MULTILINE) )
1802                     return;
1803                 //else: multiline controls need Enter for themselves
1804             }
1805             break;
1806
1807         case WXK_TAB:
1808             // ok, so this is getting absolutely ridiculous but I don't see
1809             // any other way to fix this bug: when a multiline text control is
1810             // inside a wxFrame, we need to generate the navigation event as
1811             // otherwise nothing happens at all, but when the same control is
1812             // created inside a dialog, IsDialogMessage() *does* switch focus
1813             // all by itself and so if we do it here as well, it is advanced
1814             // twice and goes to the next control... to prevent this from
1815             // happening we're doing this ugly check, the logic being that if
1816             // we don't have focus then it had been already changed to the next
1817             // control
1818             //
1819             // the right thing to do would, of course, be to understand what
1820             // the hell is IsDialogMessage() doing but this is beyond my feeble
1821             // forces at the moment unfortunately
1822             if ( !(m_windowStyle & wxTE_PROCESS_TAB))
1823             {
1824                 if ( FindFocus() == this )
1825                 {
1826                     int flags = 0;
1827                     if (!event.ShiftDown())
1828                         flags |= wxNavigationKeyEvent::IsForward ;
1829                     if (event.ControlDown())
1830                         flags |= wxNavigationKeyEvent::WinChange ;
1831                     if (Navigate(flags))
1832                         return;
1833                 }
1834             }
1835             else
1836             {
1837                 // Insert tab since calling the default Windows handler
1838                 // doesn't seem to do it
1839                 WriteText(wxT("\t"));
1840                 return;
1841             }
1842             break;
1843     }
1844
1845     // no, we didn't process it
1846     event.Skip();
1847 }
1848
1849 WXLRESULT wxTextCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
1850 {
1851     WXLRESULT lRc = wxTextCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
1852
1853     switch ( nMsg )
1854     {
1855         case WM_GETDLGCODE:
1856             {
1857                 // we always want the chars and the arrows: the arrows for
1858                 // navigation and the chars because we want Ctrl-C to work even
1859                 // in a read only control
1860                 long lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
1861
1862                 if ( IsEditable() )
1863                 {
1864                     // we may have several different cases:
1865                     // 1. normal: both TAB and ENTER are used for navigation
1866                     // 2. ctrl wants TAB for itself: ENTER is used to pass to
1867                     //    the next control in the dialog
1868                     // 3. ctrl wants ENTER for itself: TAB is used for dialog
1869                     //    navigation
1870                     // 4. ctrl wants both TAB and ENTER: Ctrl-ENTER is used to
1871                     //    go to the next control (we need some way to do it)
1872
1873                     // multiline controls should always get ENTER for themselves
1874                     if ( HasFlag(wxTE_PROCESS_ENTER) || HasFlag(wxTE_MULTILINE) )
1875                         lDlgCode |= DLGC_WANTMESSAGE;
1876
1877                     if ( HasFlag(wxTE_PROCESS_TAB) )
1878                         lDlgCode |= DLGC_WANTTAB;
1879
1880                     lRc |= lDlgCode;
1881                 }
1882                 else // !editable
1883                 {
1884                     // NB: use "=", not "|=" as the base class version returns
1885                     //     the same flags is this state as usual (i.e.
1886                     //     including DLGC_WANTMESSAGE). This is strange (how
1887                     //     does it work in the native Win32 apps?) but for now
1888                     //     live with it.
1889                     lRc = lDlgCode;
1890                 }
1891             }
1892             break;
1893     }
1894
1895     return lRc;
1896 }
1897
1898 // ----------------------------------------------------------------------------
1899 // text control event processing
1900 // ----------------------------------------------------------------------------
1901
1902 bool wxTextCtrl::SendUpdateEvent()
1903 {
1904     switch ( m_updatesCount )
1905     {
1906         case 0:
1907             // remember that we've got an update
1908             m_updatesCount++;
1909             break;
1910
1911         case 1:
1912             // we had already sent one event since the last control modification
1913             return false;
1914
1915         default:
1916             wxFAIL_MSG( _T("unexpected wxTextCtrl::m_updatesCount value") );
1917             // fall through
1918
1919         case -1:
1920             // we hadn't updated the control ourselves, this event comes from
1921             // the user, don't need to ignore it nor update the count
1922             break;
1923
1924         case -2:
1925             // the control was updated programmatically and we do NOT want to
1926             // send events
1927             return false;
1928     }
1929
1930     return SendTextUpdatedEvent();
1931 }
1932
1933 bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
1934 {
1935     switch ( param )
1936     {
1937         case EN_CHANGE:
1938             SendUpdateEvent();
1939             break;
1940
1941         case EN_MAXTEXT:
1942             // the text size limit has been hit -- try to increase it
1943             if ( !AdjustSpaceLimit() )
1944             {
1945                 wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, m_windowId);
1946                 InitCommandEvent(event);
1947                 event.SetString(GetValue());
1948                 ProcessCommand(event);
1949             }
1950             break;
1951
1952             // the other edit notification messages are not processed (or, in
1953             // the case of EN_{SET/KILL}FOCUS were already handled at WM_SET/
1954             // KILLFOCUS level)
1955         default:
1956             return false;
1957     }
1958
1959     // processed
1960     return true;
1961 }
1962
1963 WXHBRUSH wxTextCtrl::MSWControlColor(WXHDC hDC, WXHWND hWnd)
1964 {
1965     if ( !IsEnabled() && !HasFlag(wxTE_MULTILINE) )
1966         return MSWControlColorDisabled(hDC);
1967
1968     return wxTextCtrlBase::MSWControlColor(hDC, hWnd);
1969 }
1970
1971 bool wxTextCtrl::HasSpaceLimit(unsigned int *len) const
1972 {
1973     // HACK: we try to automatically extend the limit for the amount of text
1974     //       to allow (interactively) entering more than 64Kb of text under
1975     //       Win9x but we shouldn't reset the text limit which was previously
1976     //       set explicitly with SetMaxLength()
1977     //
1978     //       Unfortunately there is no EM_GETLIMITTEXTSETBYUSER and so we don't
1979     //       know the limit we set (if any). We could solve this by storing the
1980     //       limit we set in wxTextCtrl but to save space we prefer to simply
1981     //       test here the actual limit value: we consider that SetMaxLength()
1982     //       can only be called for small values while EN_MAXTEXT is only sent
1983     //       for large values (in practice the default limit seems to be 30000
1984     //       but make it smaller just to be on the safe side)
1985     *len = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
1986     return *len < 10001;
1987
1988 }
1989
1990 bool wxTextCtrl::AdjustSpaceLimit()
1991 {
1992     unsigned int limit;
1993     if ( HasSpaceLimit(&limit) )
1994         return false;
1995
1996     unsigned int len = ::GetWindowTextLength(GetHwnd());
1997     if ( len >= limit )
1998     {
1999         // increment in 32Kb chunks
2000         SetMaxLength(len + 0x8000);
2001     }
2002
2003     // we changed the limit
2004     return true;
2005 }
2006
2007 bool wxTextCtrl::AcceptsFocusFromKeyboard() const
2008 {
2009     // we don't want focus if we can't be edited unless we're a multiline
2010     // control because then it might be still nice to get focus from keyboard
2011     // to be able to scroll it without mouse
2012     return (IsEditable() || IsMultiLine()) && wxControl::AcceptsFocus();
2013 }
2014
2015 wxSize wxTextCtrl::DoGetBestSize() const
2016 {
2017     int cx, cy;
2018     wxGetCharSize(GetHWND(), &cx, &cy, GetFont());
2019
2020     int wText = DEFAULT_ITEM_WIDTH;
2021
2022     int hText = cy;
2023     if ( m_windowStyle & wxTE_MULTILINE )
2024     {
2025         hText *= wxMax(wxMin(GetNumberOfLines(), 10), 2);
2026     }
2027     //else: for single line control everything is ok
2028
2029     // we have to add the adjustments for the control height only once, not
2030     // once per line, so do it after multiplication above
2031     hText += EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy) - cy;
2032
2033     return wxSize(wText, hText);
2034 }
2035
2036 // ----------------------------------------------------------------------------
2037 // standard handlers for standard edit menu events
2038 // ----------------------------------------------------------------------------
2039
2040 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
2041 {
2042     Cut();
2043 }
2044
2045 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
2046 {
2047     Copy();
2048 }
2049
2050 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
2051 {
2052     Paste();
2053 }
2054
2055 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
2056 {
2057     Undo();
2058 }
2059
2060 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
2061 {
2062     Redo();
2063 }
2064
2065 void wxTextCtrl::OnDelete(wxCommandEvent& WXUNUSED(event))
2066 {
2067     long from, to;
2068     GetSelection(& from, & to);
2069     if (from != -1 && to != -1)
2070         Remove(from, to);
2071 }
2072
2073 void wxTextCtrl::OnSelectAll(wxCommandEvent& WXUNUSED(event))
2074 {
2075     SetSelection(-1, -1);
2076 }
2077
2078 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
2079 {
2080     event.Enable( CanCut() );
2081 }
2082
2083 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
2084 {
2085     event.Enable( CanCopy() );
2086 }
2087
2088 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
2089 {
2090     event.Enable( CanPaste() );
2091 }
2092
2093 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
2094 {
2095     event.Enable( CanUndo() );
2096 }
2097
2098 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
2099 {
2100     event.Enable( CanRedo() );
2101 }
2102
2103 void wxTextCtrl::OnUpdateDelete(wxUpdateUIEvent& event)
2104 {
2105     long from, to;
2106     GetSelection(& from, & to);
2107     event.Enable(from != -1 && to != -1 && from != to && IsEditable()) ;
2108 }
2109
2110 void wxTextCtrl::OnUpdateSelectAll(wxUpdateUIEvent& event)
2111 {
2112     event.Enable(GetLastPosition() > 0);
2113 }
2114
2115 void wxTextCtrl::OnContextMenu(wxContextMenuEvent& event)
2116 {
2117 #if wxUSE_RICHEDIT
2118     if (IsRich())
2119     {
2120         if (!m_privateContextMenu)
2121         {
2122             m_privateContextMenu = new wxMenu;
2123             m_privateContextMenu->Append(wxID_UNDO, _("&Undo"));
2124             m_privateContextMenu->Append(wxID_REDO, _("&Redo"));
2125             m_privateContextMenu->AppendSeparator();
2126             m_privateContextMenu->Append(wxID_CUT, _("Cu&t"));
2127             m_privateContextMenu->Append(wxID_COPY, _("&Copy"));
2128             m_privateContextMenu->Append(wxID_PASTE, _("&Paste"));
2129             m_privateContextMenu->Append(wxID_CLEAR, _("&Delete"));
2130             m_privateContextMenu->AppendSeparator();
2131             m_privateContextMenu->Append(wxID_SELECTALL, _("Select &All"));
2132         }
2133         PopupMenu(m_privateContextMenu);
2134         return;
2135     }
2136     else
2137 #endif
2138     event.Skip();
2139 }
2140
2141 void wxTextCtrl::OnSetFocus(wxFocusEvent& event)
2142 {
2143     // be sure the caret remains invisible if the user had hidden it
2144     if ( !m_isNativeCaretShown )
2145     {
2146         ::HideCaret(GetHwnd());
2147     }
2148
2149     event.Skip();
2150 }
2151
2152 // ----------------------------------------------------------------------------
2153 // Default colors for MSW text control
2154 //
2155 // Set default background color to the native white instead of
2156 // the default wxSYS_COLOUR_BTNFACE (is triggered with wxNullColour).
2157 // ----------------------------------------------------------------------------
2158
2159 wxVisualAttributes wxTextCtrl::GetDefaultAttributes() const
2160 {
2161     wxVisualAttributes attrs;
2162     attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
2163     attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
2164     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW); //white
2165
2166     return attrs;
2167 }
2168
2169 // the rest of the file only deals with the rich edit controls
2170 #if wxUSE_RICHEDIT
2171
2172 // ----------------------------------------------------------------------------
2173 // EN_LINK processing
2174 // ----------------------------------------------------------------------------
2175
2176 bool wxTextCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
2177 {
2178     NMHDR *hdr = (NMHDR* )lParam;
2179     switch ( hdr->code )
2180     {
2181        case EN_MSGFILTER:
2182             {
2183                 const MSGFILTER *msgf = (MSGFILTER *)lParam;
2184                 UINT msg = msgf->msg;
2185
2186                 // this is a bit crazy but richedit 1.0 sends us all mouse
2187                 // events _except_ WM_LBUTTONUP (don't ask me why) so we have
2188                 // generate the wxWin events for this message manually
2189                 //
2190                 // NB: in fact, this is still not totally correct as it does
2191                 //     send us WM_LBUTTONUP if the selection was cleared by the
2192                 //     last click -- so currently we get 2 events in this case,
2193                 //     but as I don't see any obvious way to check for this I
2194                 //     leave this code in place because it's still better than
2195                 //     not getting left up events at all
2196                 if ( msg == WM_LBUTTONUP )
2197                 {
2198                     WXUINT flags = msgf->wParam;
2199                     int x = GET_X_LPARAM(msgf->lParam),
2200                         y = GET_Y_LPARAM(msgf->lParam);
2201
2202                     HandleMouseEvent(msg, x, y, flags);
2203                 }
2204             }
2205
2206             // return true to process the event (and false to ignore it)
2207             return true;
2208
2209         case EN_LINK:
2210             {
2211                 const ENLINK *enlink = (ENLINK *)hdr;
2212
2213                 switch ( enlink->msg )
2214                 {
2215                     case WM_SETCURSOR:
2216                         // ok, so it is hardcoded - do we really nee to
2217                         // customize it?
2218                         {
2219                             wxCursor cur(wxCURSOR_HAND);
2220                             ::SetCursor(GetHcursorOf(cur));
2221                             *result = TRUE;
2222                             break;
2223                         }
2224
2225                     case WM_MOUSEMOVE:
2226                     case WM_LBUTTONDOWN:
2227                     case WM_LBUTTONUP:
2228                     case WM_LBUTTONDBLCLK:
2229                     case WM_RBUTTONDOWN:
2230                     case WM_RBUTTONUP:
2231                     case WM_RBUTTONDBLCLK:
2232                         // send a mouse event
2233                         {
2234                             static const wxEventType eventsMouse[] =
2235                             {
2236                                 wxEVT_MOTION,
2237                                 wxEVT_LEFT_DOWN,
2238                                 wxEVT_LEFT_UP,
2239                                 wxEVT_LEFT_DCLICK,
2240                                 wxEVT_RIGHT_DOWN,
2241                                 wxEVT_RIGHT_UP,
2242                                 wxEVT_RIGHT_DCLICK,
2243                             };
2244
2245                             // the event ids are consecutive
2246                             wxMouseEvent
2247                                 evtMouse(eventsMouse[enlink->msg - WM_MOUSEMOVE]);
2248
2249                             InitMouseEvent(evtMouse,
2250                                            GET_X_LPARAM(enlink->lParam),
2251                                            GET_Y_LPARAM(enlink->lParam),
2252                                            enlink->wParam);
2253
2254                             wxTextUrlEvent event(m_windowId, evtMouse,
2255                                                  enlink->chrg.cpMin,
2256                                                  enlink->chrg.cpMax);
2257
2258                             InitCommandEvent(event);
2259
2260                             *result = ProcessCommand(event);
2261                         }
2262                         break;
2263                 }
2264             }
2265             return true;
2266     }
2267
2268     // not processed, leave it to the base class
2269     return wxTextCtrlBase::MSWOnNotify(idCtrl, lParam, result);
2270 }
2271
2272 #if wxUSE_DRAG_AND_DROP
2273
2274 void wxTextCtrl::SetDropTarget(wxDropTarget *dropTarget)
2275 {
2276     if ( m_dropTarget == wxRICHTEXT_DEFAULT_DROPTARGET )
2277     {
2278         // get rid of the built-in drop target
2279         ::RevokeDragDrop(GetHwnd());
2280         m_dropTarget = NULL;
2281     }
2282
2283     wxTextCtrlBase::SetDropTarget(dropTarget);
2284 }
2285
2286 #endif // wxUSE_DRAG_AND_DROP
2287
2288 // ----------------------------------------------------------------------------
2289 // colour setting for the rich edit controls
2290 // ----------------------------------------------------------------------------
2291
2292 bool wxTextCtrl::SetBackgroundColour(const wxColour& colour)
2293 {
2294     if ( !wxTextCtrlBase::SetBackgroundColour(colour) )
2295     {
2296         // colour didn't really change
2297         return false;
2298     }
2299
2300     if ( IsRich() )
2301     {
2302         // rich edit doesn't use WM_CTLCOLOR, hence we need to send
2303         // EM_SETBKGNDCOLOR additionally
2304         ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour));
2305     }
2306
2307     return true;
2308 }
2309
2310 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
2311 {
2312     if ( !wxTextCtrlBase::SetForegroundColour(colour) )
2313     {
2314         // colour didn't really change
2315         return false;
2316     }
2317
2318     if ( IsRich() )
2319     {
2320         // change the colour of everything
2321         CHARFORMAT cf;
2322         wxZeroMemory(cf);
2323         cf.cbSize = sizeof(cf);
2324         cf.dwMask = CFM_COLOR;
2325         cf.crTextColor = wxColourToRGB(colour);
2326         ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf);
2327     }
2328
2329     return true;
2330 }
2331
2332 // ----------------------------------------------------------------------------
2333 // styling support for rich edit controls
2334 // ----------------------------------------------------------------------------
2335
2336 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
2337 {
2338     if ( !IsRich() )
2339     {
2340         // can't do it with normal text control
2341         return false;
2342     }
2343
2344     // the richedit 1.0 doesn't handle setting background colour, so don't
2345     // even try to do anything if it's the only thing we want to change
2346     if ( m_verRichEdit == 1 && !style.HasFont() && !style.HasTextColour() &&
2347         !style.HasLeftIndent() && !style.HasRightIndent() && !style.HasAlignment() &&
2348         !style.HasTabs() )
2349     {
2350         // nothing to do: return true if there was really nothing to do and
2351         // false if we failed to set bg colour
2352         return !style.HasBackgroundColour();
2353     }
2354
2355     // order the range if needed
2356     if ( start > end )
2357     {
2358         long tmp = start;
2359         start = end;
2360         end = tmp;
2361     }
2362
2363     // we can only change the format of the selection, so select the range we
2364     // want and restore the old selection later
2365     long startOld, endOld;
2366     GetSelection(&startOld, &endOld);
2367
2368     // but do we really have to change the selection?
2369     bool changeSel = start != startOld || end != endOld;
2370
2371     if ( changeSel )
2372     {
2373         DoSetSelection(start, end, SetSel_NoScroll);
2374     }
2375
2376     // initialize CHARFORMAT struct
2377 #if wxUSE_RICHEDIT2
2378     CHARFORMAT2 cf;
2379 #else
2380     CHARFORMAT cf;
2381 #endif
2382
2383     wxZeroMemory(cf);
2384
2385     // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2386     // CHARFORMAT in that case
2387 #if wxUSE_RICHEDIT2
2388     if ( m_verRichEdit == 1 )
2389     {
2390         // this is the only thing the control is going to grok
2391         cf.cbSize = sizeof(CHARFORMAT);
2392     }
2393     else
2394 #endif
2395     {
2396         // CHARFORMAT or CHARFORMAT2
2397         cf.cbSize = sizeof(cf);
2398     }
2399
2400     if ( style.HasFont() )
2401     {
2402         // VZ: CFM_CHARSET doesn't seem to do anything at all in RichEdit 2.0
2403         //     but using it doesn't seem to hurt neither so leaving it for now
2404
2405         cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET |
2406                      CFM_ITALIC | CFM_BOLD | CFM_UNDERLINE;
2407
2408         // fill in data from LOGFONT but recalculate lfHeight because we need
2409         // the real height in twips and not the negative number which
2410         // wxFillLogFont() returns (this is correct in general and works with
2411         // the Windows font mapper, but not here)
2412
2413         wxFont font(style.GetFont());
2414
2415         LOGFONT lf;
2416         wxFillLogFont(&lf, &font);
2417         cf.yHeight = 20*font.GetPointSize(); // 1 pt = 20 twips
2418         cf.bCharSet = lf.lfCharSet;
2419         cf.bPitchAndFamily = lf.lfPitchAndFamily;
2420         wxStrncpy( cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName) );
2421
2422         // also deal with underline/italic/bold attributes: note that we must
2423         // always set CFM_ITALIC &c bits in dwMask, even if we don't set the
2424         // style to allow clearing it
2425         if ( lf.lfItalic )
2426         {
2427             cf.dwEffects |= CFE_ITALIC;
2428         }
2429
2430         if ( lf.lfWeight == FW_BOLD )
2431         {
2432             cf.dwEffects |= CFE_BOLD;
2433         }
2434
2435         if ( lf.lfUnderline )
2436         {
2437             cf.dwEffects |= CFE_UNDERLINE;
2438         }
2439
2440         // strikeout fonts are not supported by wxWidgets
2441     }
2442
2443     if ( style.HasTextColour() )
2444     {
2445         cf.dwMask |= CFM_COLOR;
2446         cf.crTextColor = wxColourToRGB(style.GetTextColour());
2447     }
2448
2449 #if wxUSE_RICHEDIT2
2450     if ( m_verRichEdit != 1 && style.HasBackgroundColour() )
2451     {
2452         cf.dwMask |= CFM_BACKCOLOR;
2453         cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
2454     }
2455 #endif // wxUSE_RICHEDIT2
2456
2457     // do format the selection
2458     bool ok = ::SendMessage(GetHwnd(), EM_SETCHARFORMAT,
2459                             SCF_SELECTION, (LPARAM)&cf) != 0;
2460     if ( !ok )
2461     {
2462         wxLogDebug(_T("SendMessage(EM_SETCHARFORMAT, SCF_SELECTION) failed"));
2463     }
2464
2465     // now do the paragraph formatting
2466     PARAFORMAT2 pf;
2467     wxZeroMemory(pf);
2468     // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2469     // PARAFORMAT in that case
2470 #if wxUSE_RICHEDIT2
2471     if ( m_verRichEdit == 1 )
2472     {
2473         // this is the only thing the control is going to grok
2474         pf.cbSize = sizeof(PARAFORMAT);
2475     }
2476     else
2477 #endif
2478     {
2479         // PARAFORMAT or PARAFORMAT2
2480         pf.cbSize = sizeof(pf);
2481     }
2482
2483     if (style.HasAlignment())
2484     {
2485         pf.dwMask |= PFM_ALIGNMENT;
2486         if (style.GetAlignment() == wxTEXT_ALIGNMENT_RIGHT)
2487             pf.wAlignment = PFA_RIGHT;
2488         else if (style.GetAlignment() == wxTEXT_ALIGNMENT_CENTRE)
2489             pf.wAlignment = PFA_CENTER;
2490         else if (style.GetAlignment() == wxTEXT_ALIGNMENT_JUSTIFIED)
2491             pf.wAlignment = PFA_JUSTIFY;
2492         else
2493             pf.wAlignment = PFA_LEFT;
2494     }
2495
2496     if (style.HasLeftIndent())
2497     {
2498         pf.dwMask |= PFM_STARTINDENT | PFM_OFFSET;
2499
2500         // Convert from 1/10 mm to TWIPS
2501         pf.dxStartIndent = (int) (((double) style.GetLeftIndent()) * mm2twips / 10.0) ;
2502         pf.dxOffset = (int) (((double) style.GetLeftSubIndent()) * mm2twips / 10.0) ;
2503     }
2504
2505     if (style.HasRightIndent())
2506     {
2507         pf.dwMask |= PFM_RIGHTINDENT;
2508
2509         // Convert from 1/10 mm to TWIPS
2510         pf.dxRightIndent = (int) (((double) style.GetRightIndent()) * mm2twips / 10.0) ;
2511     }
2512
2513     if (style.HasTabs())
2514     {
2515         pf.dwMask |= PFM_TABSTOPS;
2516
2517         const wxArrayInt& tabs = style.GetTabs();
2518
2519         pf.cTabCount = (SHORT)wxMin(tabs.GetCount(), MAX_TAB_STOPS);
2520         size_t i;
2521         for (i = 0; i < (size_t) pf.cTabCount; i++)
2522         {
2523             // Convert from 1/10 mm to TWIPS
2524             pf.rgxTabs[i] = (int) (((double) tabs[i]) * mm2twips / 10.0) ;
2525         }
2526     }
2527
2528 #if wxUSE_RICHEDIT2
2529     if ( m_verRichEdit > 1 )
2530     {
2531         if ( wxTheApp->GetLayoutDirection() == wxLayout_RightToLeft )
2532         {
2533             // Use RTL paragraphs in RTL mode to get proper layout
2534             pf.dwMask |= PFM_RTLPARA;
2535             pf.wEffects |= PFE_RTLPARA;
2536         }
2537     }
2538 #endif // wxUSE_RICHEDIT2
2539
2540     if ( pf.dwMask )
2541     {
2542         // do format the selection
2543         bool ok = ::SendMessage(GetHwnd(), EM_SETPARAFORMAT,
2544                                 0, (LPARAM) &pf) != 0;
2545         if ( !ok )
2546         {
2547             wxLogDebug(_T("SendMessage(EM_SETPARAFORMAT, 0) failed"));
2548         }
2549     }
2550
2551     if ( changeSel )
2552     {
2553         // restore the original selection
2554         DoSetSelection(startOld, endOld, SetSel_NoScroll);
2555     }
2556
2557     return ok;
2558 }
2559
2560 bool wxTextCtrl::SetDefaultStyle(const wxTextAttr& style)
2561 {
2562     if ( !wxTextCtrlBase::SetDefaultStyle(style) )
2563         return false;
2564
2565     if ( IsEditable() )
2566     {
2567         // we have to do this or the style wouldn't apply for the text typed by
2568         // the user
2569         wxTextPos posLast = GetLastPosition();
2570         SetStyle(posLast, posLast, m_defaultStyle);
2571     }
2572
2573     return true;
2574 }
2575
2576 bool wxTextCtrl::GetStyle(long position, wxTextAttr& style)
2577 {
2578     if ( !IsRich() )
2579     {
2580         // can't do it with normal text control
2581         return false;
2582     }
2583
2584     // initialize CHARFORMAT struct
2585 #if wxUSE_RICHEDIT2
2586     CHARFORMAT2 cf;
2587 #else
2588     CHARFORMAT cf;
2589 #endif
2590
2591     wxZeroMemory(cf);
2592
2593     // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2594     // CHARFORMAT in that case
2595 #if wxUSE_RICHEDIT2
2596     if ( m_verRichEdit == 1 )
2597     {
2598         // this is the only thing the control is going to grok
2599         cf.cbSize = sizeof(CHARFORMAT);
2600     }
2601     else
2602 #endif
2603     {
2604         // CHARFORMAT or CHARFORMAT2
2605         cf.cbSize = sizeof(cf);
2606     }
2607     // we can only change the format of the selection, so select the range we
2608     // want and restore the old selection later
2609     long startOld, endOld;
2610     GetSelection(&startOld, &endOld);
2611
2612     // but do we really have to change the selection?
2613     bool changeSel = position != startOld || position != endOld;
2614
2615     if ( changeSel )
2616     {
2617         DoSetSelection(position, position + 1, SetSel_NoScroll);
2618     }
2619
2620     // get the selection formatting
2621     (void) ::SendMessage(GetHwnd(), EM_GETCHARFORMAT,
2622                             SCF_SELECTION, (LPARAM)&cf) ;
2623
2624
2625     LOGFONT lf;
2626     lf.lfHeight = cf.yHeight;
2627     lf.lfWidth = 0;
2628     lf.lfCharSet = ANSI_CHARSET; // FIXME: how to get correct charset?
2629     lf.lfClipPrecision = 0;
2630     lf.lfEscapement = 0;
2631     wxStrcpy(lf.lfFaceName, cf.szFaceName);
2632
2633     //NOTE:  we _MUST_ set each of these values to _something_ since we
2634     //do not call wxZeroMemory on the LOGFONT lf
2635     if (cf.dwEffects & CFE_ITALIC)
2636         lf.lfItalic = TRUE;
2637     else
2638         lf.lfItalic = FALSE;
2639
2640     lf.lfOrientation = 0;
2641     lf.lfPitchAndFamily = cf.bPitchAndFamily;
2642     lf.lfQuality = 0;
2643
2644     if (cf.dwEffects & CFE_STRIKEOUT)
2645         lf.lfStrikeOut = TRUE;
2646     else
2647         lf.lfStrikeOut = FALSE;
2648
2649     if (cf.dwEffects & CFE_UNDERLINE)
2650         lf.lfUnderline = TRUE;
2651     else
2652         lf.lfUnderline = FALSE;
2653
2654     if (cf.dwEffects & CFE_BOLD)
2655         lf.lfWeight = FW_BOLD;
2656     else
2657         lf.lfWeight = FW_NORMAL;
2658
2659     wxFont font = wxCreateFontFromLogFont(& lf);
2660     if (font.Ok())
2661     {
2662         style.SetFont(font);
2663     }
2664     style.SetTextColour(wxColour(cf.crTextColor));
2665
2666 #if wxUSE_RICHEDIT2
2667     if ( m_verRichEdit != 1 )
2668     {
2669         // cf.dwMask |= CFM_BACKCOLOR;
2670         style.SetBackgroundColour(wxColour(cf.crBackColor));
2671     }
2672 #endif // wxUSE_RICHEDIT2
2673
2674     // now get the paragraph formatting
2675     PARAFORMAT2 pf;
2676     wxZeroMemory(pf);
2677     // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2678     // PARAFORMAT in that case
2679 #if wxUSE_RICHEDIT2
2680     if ( m_verRichEdit == 1 )
2681     {
2682         // this is the only thing the control is going to grok
2683         pf.cbSize = sizeof(PARAFORMAT);
2684     }
2685     else
2686 #endif
2687     {
2688         // PARAFORMAT or PARAFORMAT2
2689         pf.cbSize = sizeof(pf);
2690     }
2691
2692     // do format the selection
2693     (void) ::SendMessage(GetHwnd(), EM_GETPARAFORMAT, 0, (LPARAM) &pf) ;
2694
2695     style.SetLeftIndent( (int) ((double) pf.dxStartIndent * twips2mm * 10.0), (int) ((double) pf.dxOffset * twips2mm * 10.0) );
2696     style.SetRightIndent( (int) ((double) pf.dxRightIndent * twips2mm * 10.0) );
2697
2698     if (pf.wAlignment == PFA_CENTER)
2699         style.SetAlignment(wxTEXT_ALIGNMENT_CENTRE);
2700     else if (pf.wAlignment == PFA_RIGHT)
2701         style.SetAlignment(wxTEXT_ALIGNMENT_RIGHT);
2702     else if (pf.wAlignment == PFA_JUSTIFY)
2703         style.SetAlignment(wxTEXT_ALIGNMENT_JUSTIFIED);
2704     else
2705         style.SetAlignment(wxTEXT_ALIGNMENT_LEFT);
2706
2707     wxArrayInt tabStops;
2708     size_t i;
2709     for (i = 0; i < (size_t) pf.cTabCount; i++)
2710     {
2711         tabStops.Add( (int) ((double) (pf.rgxTabs[i] & 0xFFFF) * twips2mm * 10.0) );
2712     }
2713
2714     if ( changeSel )
2715     {
2716         // restore the original selection
2717         DoSetSelection(startOld, endOld, SetSel_NoScroll);
2718     }
2719
2720     return true;
2721 }
2722
2723 // ----------------------------------------------------------------------------
2724 // wxRichEditModule
2725 // ----------------------------------------------------------------------------
2726
2727 static const HINSTANCE INVALID_HINSTANCE = (HINSTANCE)-1;
2728
2729 bool wxRichEditModule::OnInit()
2730 {
2731     // don't do anything - we will load it when needed
2732     return true;
2733 }
2734
2735 void wxRichEditModule::OnExit()
2736 {
2737     for ( size_t i = 0; i < WXSIZEOF(ms_hRichEdit); i++ )
2738     {
2739         if ( ms_hRichEdit[i] && ms_hRichEdit[i] != INVALID_HINSTANCE )
2740         {
2741             ::FreeLibrary(ms_hRichEdit[i]);
2742             ms_hRichEdit[i] = NULL;
2743         }
2744     }
2745 #if wxUSE_INKEDIT
2746     if (ms_inkEditLib.IsLoaded())
2747         ms_inkEditLib.Unload();
2748 #endif
2749 }
2750
2751 /* static */
2752 bool wxRichEditModule::Load(Version version)
2753 {
2754     if ( ms_hRichEdit[version] == INVALID_HINSTANCE )
2755     {
2756         // we had already tried to load it and failed
2757         return false;
2758     }
2759
2760     if ( ms_hRichEdit[version] )
2761     {
2762         // we've already got this one
2763         return true;
2764     }
2765
2766     static const wxChar *dllnames[] =
2767     {
2768         _T("riched32"),
2769         _T("riched20"),
2770         _T("msftedit"),
2771     };
2772
2773     wxCOMPILE_TIME_ASSERT( WXSIZEOF(dllnames) == Version_Max,
2774                             RichEditDllNamesVersionsMismatch );
2775
2776     ms_hRichEdit[version] = ::LoadLibrary(dllnames[version]);
2777
2778     if ( !ms_hRichEdit[version] )
2779     {
2780         ms_hRichEdit[version] = INVALID_HINSTANCE;
2781
2782         return false;
2783     }
2784
2785     return true;
2786 }
2787
2788 #if wxUSE_INKEDIT
2789 // load the InkEdit library
2790 bool wxRichEditModule::LoadInkEdit()
2791 {
2792     static wxDynamicLibrary ms_inkEditLib;
2793     static bool             ms_inkEditLibLoadAttemped;
2794     if (ms_inkEditLibLoadAttemped)
2795         ms_inkEditLib.IsLoaded();
2796
2797     ms_inkEditLibLoadAttemped = true;
2798
2799     wxLogNull logNull;
2800     return ms_inkEditLib.Load(wxT("inked"));
2801 }
2802 #endif // wxUSE_INKEDIT
2803
2804
2805 #endif // wxUSE_RICHEDIT
2806
2807 #endif // wxUSE_TEXTCTRL && !(__SMARTPHONE__ && __WXWINCE__)