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Include wx/module.h according to precompiled headers of wx/wx.h (with other minor...
[wxWidgets.git] / src / msw / textctrl.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: src/msw/textctrl.cpp
3 // Purpose: wxTextCtrl
4 // Author: Julian Smart
5 // Modified by:
6 // Created: 04/01/98
7 // RCS-ID: $Id$
8 // Copyright: (c) Julian Smart
9 // Licence: wxWindows licence
10 /////////////////////////////////////////////////////////////////////////////
11
12 // ============================================================================
13 // declarations
14 // ============================================================================
15
16 // ----------------------------------------------------------------------------
17 // headers
18 // ----------------------------------------------------------------------------
19
20 // For compilers that support precompilation, includes "wx.h".
21 #include "wx/wxprec.h"
22
23 #ifdef __BORLANDC__
24 #pragma hdrstop
25 #endif
26
27 #if wxUSE_TEXTCTRL && !(defined(__SMARTPHONE__) && defined(__WXWINCE__))
28
29 #ifndef WX_PRECOMP
30 #include "wx/textctrl.h"
31 #include "wx/settings.h"
32 #include "wx/brush.h"
33 #include "wx/utils.h"
34 #include "wx/intl.h"
35 #include "wx/log.h"
36 #include "wx/app.h"
37 #include "wx/menu.h"
38 #include "wx/math.h"
39 #include "wx/module.h"
40 #endif
41
42 #include "wx/sysopt.h"
43
44 #if wxUSE_CLIPBOARD
45 #include "wx/clipbrd.h"
46 #endif
47
48 #include "wx/textfile.h"
49
50 #include <windowsx.h>
51
52 #include "wx/msw/private.h"
53 #include "wx/msw/winundef.h"
54
55 #include <string.h>
56 #include <stdlib.h>
57
58 #ifndef __WXWINCE__
59 #include <sys/types.h>
60 #endif
61
62 #if wxUSE_RICHEDIT
63
64 #if wxUSE_INKEDIT
65 #include "wx/dynlib.h"
66 #endif
67
68 // old mingw32 has richedit stuff directly in windows.h and doesn't have
69 // richedit.h at all
70 #if !defined(__GNUWIN32_OLD__) || defined(__CYGWIN10__)
71 #include <richedit.h>
72 #endif
73
74 #include "wx/msw/missing.h"
75
76 #endif // wxUSE_RICHEDIT
77
78 // ----------------------------------------------------------------------------
79 // private classes
80 // ----------------------------------------------------------------------------
81
82 #if wxUSE_RICHEDIT
83
84 // this module initializes RichEdit DLL(s) if needed
85 class wxRichEditModule : public wxModule
86 {
87 public:
88 enum Version
89 {
90 Version_1, // riched32.dll
91 Version_2or3, // both use riched20.dll
92 Version_41, // msftedit.dll (XP SP1 and Windows 2003)
93 Version_Max
94 };
95
96 virtual bool OnInit();
97 virtual void OnExit();
98
99 // load the richedit DLL for the specified version of rich edit
100 static bool Load(Version version);
101
102 #if wxUSE_INKEDIT
103 // load the InkEdit library
104 static bool LoadInkEdit();
105 #endif
106
107 private:
108 // the handles to richedit 1.0 and 2.0 (or 3.0) DLLs
109 static HINSTANCE ms_hRichEdit[Version_Max];
110
111 #if wxUSE_INKEDIT
112 static wxDynamicLibrary ms_inkEditLib;
113 static bool ms_inkEditLibLoadAttemped;
114 #endif
115
116 DECLARE_DYNAMIC_CLASS(wxRichEditModule)
117 };
118
119 HINSTANCE wxRichEditModule::ms_hRichEdit[Version_Max] = { NULL, NULL, NULL };
120
121 #if wxUSE_INKEDIT
122 wxDynamicLibrary wxRichEditModule::ms_inkEditLib;
123 bool wxRichEditModule::ms_inkEditLibLoadAttemped = false;
124 #endif
125
126 IMPLEMENT_DYNAMIC_CLASS(wxRichEditModule, wxModule)
127
128 #endif // wxUSE_RICHEDIT
129
130 // a small class used to set m_updatesCount to 0 (to filter duplicate events if
131 // necessary) and to reset it back to -1 afterwards
132 class UpdatesCountFilter
133 {
134 public:
135 UpdatesCountFilter(int& count)
136 : m_count(count)
137 {
138 wxASSERT_MSG( m_count == -1, _T("wrong initial m_updatesCount value") );
139
140 m_count = 0;
141 }
142
143 ~UpdatesCountFilter()
144 {
145 m_count = -1;
146 }
147
148 // return true if an event has been received
149 bool GotUpdate() const
150 {
151 return m_count == 1;
152 }
153
154 private:
155 int& m_count;
156
157 DECLARE_NO_COPY_CLASS(UpdatesCountFilter)
158 };
159
160 // ----------------------------------------------------------------------------
161 // event tables and other macros
162 // ----------------------------------------------------------------------------
163
164 #if wxUSE_EXTENDED_RTTI
165 WX_DEFINE_FLAGS( wxTextCtrlStyle )
166
167 wxBEGIN_FLAGS( wxTextCtrlStyle )
168 // new style border flags, we put them first to
169 // use them for streaming out
170 wxFLAGS_MEMBER(wxBORDER_SIMPLE)
171 wxFLAGS_MEMBER(wxBORDER_SUNKEN)
172 wxFLAGS_MEMBER(wxBORDER_DOUBLE)
173 wxFLAGS_MEMBER(wxBORDER_RAISED)
174 wxFLAGS_MEMBER(wxBORDER_STATIC)
175 wxFLAGS_MEMBER(wxBORDER_NONE)
176
177 // old style border flags
178 wxFLAGS_MEMBER(wxSIMPLE_BORDER)
179 wxFLAGS_MEMBER(wxSUNKEN_BORDER)
180 wxFLAGS_MEMBER(wxDOUBLE_BORDER)
181 wxFLAGS_MEMBER(wxRAISED_BORDER)
182 wxFLAGS_MEMBER(wxSTATIC_BORDER)
183 wxFLAGS_MEMBER(wxBORDER)
184
185 // standard window styles
186 wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
187 wxFLAGS_MEMBER(wxCLIP_CHILDREN)
188 wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
189 wxFLAGS_MEMBER(wxWANTS_CHARS)
190 wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
191 wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
192 wxFLAGS_MEMBER(wxVSCROLL)
193 wxFLAGS_MEMBER(wxHSCROLL)
194
195 wxFLAGS_MEMBER(wxTE_PROCESS_ENTER)
196 wxFLAGS_MEMBER(wxTE_PROCESS_TAB)
197 wxFLAGS_MEMBER(wxTE_MULTILINE)
198 wxFLAGS_MEMBER(wxTE_PASSWORD)
199 wxFLAGS_MEMBER(wxTE_READONLY)
200 wxFLAGS_MEMBER(wxHSCROLL)
201 wxFLAGS_MEMBER(wxTE_RICH)
202 wxFLAGS_MEMBER(wxTE_RICH2)
203 wxFLAGS_MEMBER(wxTE_AUTO_URL)
204 wxFLAGS_MEMBER(wxTE_NOHIDESEL)
205 wxFLAGS_MEMBER(wxTE_LEFT)
206 wxFLAGS_MEMBER(wxTE_CENTRE)
207 wxFLAGS_MEMBER(wxTE_RIGHT)
208 wxFLAGS_MEMBER(wxTE_DONTWRAP)
209 wxFLAGS_MEMBER(wxTE_CHARWRAP)
210 wxFLAGS_MEMBER(wxTE_WORDWRAP)
211
212 wxEND_FLAGS( wxTextCtrlStyle )
213
214 IMPLEMENT_DYNAMIC_CLASS_XTI(wxTextCtrl, wxControl,"wx/textctrl.h")
215
216 wxBEGIN_PROPERTIES_TABLE(wxTextCtrl)
217 wxEVENT_PROPERTY( TextUpdated , wxEVT_COMMAND_TEXT_UPDATED , wxCommandEvent )
218 wxEVENT_PROPERTY( TextEnter , wxEVT_COMMAND_TEXT_ENTER , wxCommandEvent )
219
220 wxPROPERTY( Font , wxFont , SetFont , GetFont , EMPTY_MACROVALUE, 0 /*flags*/ , wxT("Helpstring") , wxT("group") )
221 wxPROPERTY( Value , wxString , SetValue, GetValue, wxString() , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
222 wxPROPERTY_FLAGS( WindowStyle , wxTextCtrlStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
223 wxEND_PROPERTIES_TABLE()
224
225 wxBEGIN_HANDLERS_TABLE(wxTextCtrl)
226 wxEND_HANDLERS_TABLE()
227
228 wxCONSTRUCTOR_6( wxTextCtrl , wxWindow* , Parent , wxWindowID , Id , wxString , Value , wxPoint , Position , wxSize , Size , long , WindowStyle)
229 #else
230 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxTextCtrlBase)
231 #endif
232
233
234 BEGIN_EVENT_TABLE(wxTextCtrl, wxTextCtrlBase)
235 EVT_CHAR(wxTextCtrl::OnChar)
236 EVT_DROP_FILES(wxTextCtrl::OnDropFiles)
237
238 #if wxUSE_RICHEDIT
239 EVT_CONTEXT_MENU(wxTextCtrl::OnContextMenu)
240 #endif
241
242 EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
243 EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
244 EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
245 EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
246 EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
247 EVT_MENU(wxID_CLEAR, wxTextCtrl::OnDelete)
248 EVT_MENU(wxID_SELECTALL, wxTextCtrl::OnSelectAll)
249
250 EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
251 EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
252 EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
253 EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
254 EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
255 EVT_UPDATE_UI(wxID_CLEAR, wxTextCtrl::OnUpdateDelete)
256 EVT_UPDATE_UI(wxID_SELECTALL, wxTextCtrl::OnUpdateSelectAll)
257
258 EVT_SET_FOCUS(wxTextCtrl::OnSetFocus)
259 END_EVENT_TABLE()
260
261 // ----------------------------------------------------------------------------
262 // function prototypes
263 // ----------------------------------------------------------------------------
264
265 LRESULT APIENTRY _EXPORT wxTextCtrlWndProc(HWND hWnd,
266 UINT message,
267 WPARAM wParam,
268 LPARAM lParam);
269
270 // ---------------------------------------------------------------------------
271 // global vars
272 // ---------------------------------------------------------------------------
273
274 // the pointer to standard text control wnd proc
275 static WNDPROC gs_wndprocEdit = (WNDPROC)NULL;
276
277 // ============================================================================
278 // implementation
279 // ============================================================================
280
281 // ----------------------------------------------------------------------------
282 // wnd proc for subclassed edit control
283 // ----------------------------------------------------------------------------
284
285 LRESULT APIENTRY _EXPORT wxTextCtrlWndProc(HWND hWnd,
286 UINT message,
287 WPARAM wParam,
288 LPARAM lParam)
289 {
290 switch ( message )
291 {
292 case WM_CUT:
293 case WM_COPY:
294 case WM_PASTE:
295 {
296 wxWindow *win = wxFindWinFromHandle((WXHWND)hWnd);
297 if( win->HandleClipboardEvent( message ) )
298 return 0;
299 break;
300 }
301 }
302 return ::CallWindowProc(CASTWNDPROC gs_wndprocEdit, hWnd, message, wParam, lParam);
303 }
304
305 // ----------------------------------------------------------------------------
306 // creation
307 // ----------------------------------------------------------------------------
308
309 void wxTextCtrl::Init()
310 {
311 #if wxUSE_RICHEDIT
312 m_verRichEdit = 0;
313 #endif // wxUSE_RICHEDIT
314
315 #if wxUSE_INKEDIT && wxUSE_RICHEDIT
316 m_isInkEdit = 0;
317 #endif
318
319 m_privateContextMenu = NULL;
320 m_updatesCount = -1;
321 m_isNativeCaretShown = true;
322 }
323
324 wxTextCtrl::~wxTextCtrl()
325 {
326 delete m_privateContextMenu;
327 }
328
329 bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id,
330 const wxString& value,
331 const wxPoint& pos,
332 const wxSize& size,
333 long style,
334 const wxValidator& validator,
335 const wxString& name)
336 {
337 #ifdef __WXWINCE__
338 if ((style & wxBORDER_MASK) == 0)
339 style |= wxBORDER_SIMPLE;
340 #endif
341
342 // base initialization
343 if ( !CreateControl(parent, id, pos, size, style, validator, name) )
344 return false;
345
346 // translate wxWin style flags to MSW ones
347 WXDWORD msStyle = MSWGetCreateWindowFlags();
348
349 // do create the control - either an EDIT or RICHEDIT
350 wxString windowClass = wxT("EDIT");
351
352 #if defined(__POCKETPC__) || defined(__SMARTPHONE__)
353 // A control that capitalizes the first letter
354 if (style & wxTE_CAPITALIZE)
355 windowClass = wxT("CAPEDIT");
356 #endif
357
358 #if wxUSE_RICHEDIT
359 if ( m_windowStyle & wxTE_AUTO_URL )
360 {
361 // automatic URL detection only works in RichEdit 2.0+
362 m_windowStyle |= wxTE_RICH2;
363 }
364
365 if ( m_windowStyle & wxTE_RICH2 )
366 {
367 // using richedit 2.0 implies using wxTE_RICH
368 m_windowStyle |= wxTE_RICH;
369 }
370
371 // we need to load the richedit DLL before creating the rich edit control
372 if ( m_windowStyle & wxTE_RICH )
373 {
374 // versions 2.0, 3.0 and 4.1 of rich edit are mostly compatible with
375 // each other but not with version 1.0, so we have separate flags for
376 // the version 1.0 and the others (and so m_verRichEdit may be 0 (plain
377 // EDIT control), 1 for version 1.0 or 2 for any higher version)
378 //
379 // notice that 1.0 has no Unicode support at all so in Unicode build we
380 // must use another version
381
382 #if wxUSE_UNICODE
383 m_verRichEdit = 2;
384 #else // !wxUSE_UNICODE
385 m_verRichEdit = m_windowStyle & wxTE_RICH2 ? 2 : 1;
386 #endif // wxUSE_UNICODE/!wxUSE_UNICODE
387
388 #if wxUSE_INKEDIT
389 // First test if we can load an ink edit control. Normally, all edit
390 // controls will be made ink edit controls if a tablet environment is
391 // found (or if msw.inkedit != 0 and the InkEd.dll is present).
392 // However, an application can veto ink edit controls by either specifying
393 // msw.inkedit = 0 or by removing wxTE_RICH[2] from the style.
394 //
395 if ((wxSystemSettings::HasFeature(wxSYS_TABLET_PRESENT) || wxSystemOptions::GetOptionInt(wxT("msw.inkedit")) != 0) &&
396 !(wxSystemOptions::HasOption(wxT("msw.inkedit")) && wxSystemOptions::GetOptionInt(wxT("msw.inkedit")) == 0))
397 {
398 if (wxRichEditModule::LoadInkEdit())
399 {
400 windowClass = INKEDIT_CLASS;
401
402 #if wxUSE_INKEDIT && wxUSE_RICHEDIT
403 m_isInkEdit = 1;
404 #endif
405
406 // Fake rich text version for other calls
407 m_verRichEdit = 2;
408 }
409 }
410 #endif
411
412 if (!IsInkEdit())
413 {
414 if ( m_verRichEdit == 2 )
415 {
416 if ( wxRichEditModule::Load(wxRichEditModule::Version_41) )
417 {
418 // yes, class name for version 4.1 really is 5.0
419 windowClass = _T("RICHEDIT50W");
420 }
421 else if ( wxRichEditModule::Load(wxRichEditModule::Version_2or3) )
422 {
423 windowClass = _T("RichEdit20")
424 #if wxUSE_UNICODE
425 _T("W");
426 #else // ANSI
427 _T("A");
428 #endif // Unicode/ANSI
429 }
430 else // failed to load msftedit.dll and riched20.dll
431 {
432 m_verRichEdit = 1;
433 }
434 }
435
436 if ( m_verRichEdit == 1 )
437 {
438 if ( wxRichEditModule::Load(wxRichEditModule::Version_1) )
439 {
440 windowClass = _T("RICHEDIT");
441 }
442 else // failed to load any richedit control DLL
443 {
444 // only give the error msg once if the DLL can't be loaded
445 static bool s_errorGiven = false; // MT ok as only used by GUI
446
447 if ( !s_errorGiven )
448 {
449 wxLogError(_("Impossible to create a rich edit control, using simple text control instead. Please reinstall riched32.dll"));
450
451 s_errorGiven = true;
452 }
453
454 m_verRichEdit = 0;
455 }
456 }
457 } // !useInkEdit
458 }
459 #endif // wxUSE_RICHEDIT
460
461 // we need to turn '\n's into "\r\n"s for the multiline controls
462 wxString valueWin;
463 if ( m_windowStyle & wxTE_MULTILINE )
464 {
465 valueWin = wxTextFile::Translate(value, wxTextFileType_Dos);
466 }
467 else // single line
468 {
469 valueWin = value;
470 }
471
472 if ( !MSWCreateControl(windowClass, msStyle, pos, size, valueWin) )
473 return false;
474
475 #if wxUSE_RICHEDIT
476 if (IsRich())
477 {
478 #if wxUSE_INKEDIT
479 if (IsInkEdit())
480 {
481 // Pass IEM_InsertText (0) as wParam, in order to have the ink always
482 // converted to text.
483 ::SendMessage(GetHwnd(), EM_SETINKINSERTMODE, 0, 0);
484
485 // Make sure the mouse can be used for input
486 ::SendMessage(GetHwnd(), EM_SETUSEMOUSEFORINPUT, 1, 0);
487 }
488 #endif
489
490 // enable the events we're interested in: we want to get EN_CHANGE as
491 // for the normal controls
492 LPARAM mask = ENM_CHANGE;
493
494 if (GetRichVersion() == 1 && !IsInkEdit())
495 {
496 // we also need EN_MSGFILTER for richedit 1.0 for the reasons
497 // explained in its handler
498 mask |= ENM_MOUSEEVENTS;
499
500 // we also need to force the appearance of the vertical scrollbar
501 // initially as otherwise the control doesn't refresh correctly
502 // after resize: but once the vertical scrollbar had been shown
503 // (even if it's subsequently hidden) it does
504 //
505 // this is clearly a bug and for now it has been only noticed under
506 // Windows XP, so if we're sure it works correctly under other
507 // systems we could do this only for XP
508 SetSize(-1, 1); // 1 is small enough to force vert scrollbar
509 SetSize(size);
510 }
511 else if ( m_windowStyle & wxTE_AUTO_URL )
512 {
513 mask |= ENM_LINK;
514
515 ::SendMessage(GetHwnd(), EM_AUTOURLDETECT, TRUE, 0);
516 }
517
518 ::SendMessage(GetHwnd(), EM_SETEVENTMASK, 0, mask);
519 }
520 #endif // wxUSE_RICHEDIT
521
522 gs_wndprocEdit = wxSetWindowProc((HWND)GetHwnd(),
523 wxTextCtrlWndProc);
524
525 return true;
526 }
527
528 // Make sure the window style (etc.) reflects the HWND style (roughly)
529 void wxTextCtrl::AdoptAttributesFromHWND()
530 {
531 wxWindow::AdoptAttributesFromHWND();
532
533 HWND hWnd = GetHwnd();
534 long style = ::GetWindowLong(hWnd, GWL_STYLE);
535
536 // retrieve the style to see whether this is an edit or richedit ctrl
537 #if wxUSE_RICHEDIT
538 wxString classname = wxGetWindowClass(GetHWND());
539
540 if ( classname.IsSameAs(_T("EDIT"), false /* no case */) )
541 {
542 m_verRichEdit = 0;
543 }
544 else // rich edit?
545 {
546 wxChar c;
547 if ( wxSscanf(classname, _T("RichEdit%d0%c"), &m_verRichEdit, &c) != 2 )
548 {
549 wxLogDebug(_T("Unknown edit control '%s'."), classname.c_str());
550
551 m_verRichEdit = 0;
552 }
553 }
554 #endif // wxUSE_RICHEDIT
555
556 if (style & ES_MULTILINE)
557 m_windowStyle |= wxTE_MULTILINE;
558 if (style & ES_PASSWORD)
559 m_windowStyle |= wxTE_PASSWORD;
560 if (style & ES_READONLY)
561 m_windowStyle |= wxTE_READONLY;
562 if (style & ES_WANTRETURN)
563 m_windowStyle |= wxTE_PROCESS_ENTER;
564 if (style & ES_CENTER)
565 m_windowStyle |= wxTE_CENTRE;
566 if (style & ES_RIGHT)
567 m_windowStyle |= wxTE_RIGHT;
568 }
569
570 WXDWORD wxTextCtrl::MSWGetStyle(long style, WXDWORD *exstyle) const
571 {
572 long msStyle = wxControl::MSWGetStyle(style, exstyle);
573
574 // styles which we alaways add by default
575 if ( style & wxTE_MULTILINE )
576 {
577 wxASSERT_MSG( !(style & wxTE_PROCESS_ENTER),
578 wxT("wxTE_PROCESS_ENTER style is ignored for multiline text controls (they always process it)") );
579
580 msStyle |= ES_MULTILINE | ES_WANTRETURN;
581 if ( !(style & wxTE_NO_VSCROLL) )
582 {
583 // always adjust the vertical scrollbar automatically if we have it
584 msStyle |= WS_VSCROLL | ES_AUTOVSCROLL;
585
586 #if wxUSE_RICHEDIT
587 // we have to use this style for the rich edit controls because
588 // without it the vertical scrollbar never appears at all in
589 // richedit 3.0 because of our ECO_NOHIDESEL hack (search for it)
590 if ( style & wxTE_RICH2 )
591 {
592 msStyle |= ES_DISABLENOSCROLL;
593 }
594 #endif // wxUSE_RICHEDIT
595 }
596
597 style |= wxTE_PROCESS_ENTER;
598 }
599 else // !multiline
600 {
601 // there is really no reason to not have this style for single line
602 // text controls
603 msStyle |= ES_AUTOHSCROLL;
604 }
605
606 // note that wxTE_DONTWRAP is the same as wxHSCROLL so if we have a horz
607 // scrollbar, there is no wrapping -- which makes sense
608 if ( style & wxTE_DONTWRAP )
609 {
610 // automatically scroll the control horizontally as necessary
611 //
612 // NB: ES_AUTOHSCROLL is needed for richedit controls or they don't
613 // show horz scrollbar at all, even in spite of WS_HSCROLL, and as
614 // it doesn't seem to do any harm for plain edit controls, add it
615 // always
616 msStyle |= WS_HSCROLL | ES_AUTOHSCROLL;
617 }
618
619 if ( style & wxTE_READONLY )
620 msStyle |= ES_READONLY;
621
622 if ( style & wxTE_PASSWORD )
623 msStyle |= ES_PASSWORD;
624
625 if ( style & wxTE_NOHIDESEL )
626 msStyle |= ES_NOHIDESEL;
627
628 // note that we can't do do "& wxTE_LEFT" as wxTE_LEFT == 0
629 if ( style & wxTE_CENTRE )
630 msStyle |= ES_CENTER;
631 else if ( style & wxTE_RIGHT )
632 msStyle |= ES_RIGHT;
633 else
634 msStyle |= ES_LEFT; // ES_LEFT is 0 as well but for consistency...
635
636 return msStyle;
637 }
638
639 void wxTextCtrl::SetWindowStyleFlag(long style)
640 {
641 #if wxUSE_RICHEDIT
642 // we have to deal with some styles separately because they can't be
643 // changed by simply calling SetWindowLong(GWL_STYLE) but can be changed
644 // using richedit-specific EM_SETOPTIONS
645 if ( IsRich() &&
646 ((style & wxTE_NOHIDESEL) != (GetWindowStyle() & wxTE_NOHIDESEL)) )
647 {
648 bool set = (style & wxTE_NOHIDESEL) != 0;
649
650 ::SendMessage(GetHwnd(), EM_SETOPTIONS, set ? ECOOP_OR : ECOOP_AND,
651 set ? ECO_NOHIDESEL : ~ECO_NOHIDESEL);
652 }
653 #endif // wxUSE_RICHEDIT
654
655 wxControl::SetWindowStyleFlag(style);
656 }
657
658 // ----------------------------------------------------------------------------
659 // set/get the controls text
660 // ----------------------------------------------------------------------------
661
662 wxString wxTextCtrl::GetValue() const
663 {
664 // range 0..-1 is special for GetRange() and means to retrieve all text
665 return GetRange(0, -1);
666 }
667
668 wxString wxTextCtrl::GetRange(long from, long to) const
669 {
670 wxString str;
671
672 if ( from >= to && to != -1 )
673 {
674 // nothing to retrieve
675 return str;
676 }
677
678 #if wxUSE_RICHEDIT
679 if ( IsRich() )
680 {
681 int len = GetWindowTextLength(GetHwnd());
682 if ( len > from )
683 {
684 if ( to == -1 )
685 to = len;
686
687 #if !wxUSE_UNICODE
688 // we must use EM_STREAMOUT if we don't want to lose all characters
689 // not representable in the current character set (EM_GETTEXTRANGE
690 // simply replaces them with question marks...)
691 if ( GetRichVersion() > 1 )
692 {
693 // we must have some encoding, otherwise any 8bit chars in the
694 // control are simply *lost* (replaced by '?')
695 wxFontEncoding encoding = wxFONTENCODING_SYSTEM;
696
697 wxFont font = m_defaultStyle.GetFont();
698 if ( !font.Ok() )
699 font = GetFont();
700
701 if ( font.Ok() )
702 {
703 encoding = font.GetEncoding();
704 }
705
706 if ( encoding == wxFONTENCODING_SYSTEM )
707 {
708 encoding = wxLocale::GetSystemEncoding();
709 }
710
711 if ( encoding == wxFONTENCODING_SYSTEM )
712 {
713 encoding = wxFONTENCODING_ISO8859_1;
714 }
715
716 str = StreamOut(encoding);
717
718 if ( !str.empty() )
719 {
720 // we have to manually extract the required part, luckily
721 // this is easy in this case as EOL characters in str are
722 // just LFs because we remove CRs in wxRichEditStreamOut
723 str = str.Mid(from, to - from);
724 }
725 }
726
727 // StreamOut() wasn't used or failed, try to do it in normal way
728 if ( str.empty() )
729 #endif // !wxUSE_UNICODE
730 {
731 // alloc one extra WORD as needed by the control
732 wxStringBuffer tmp(str, ++len);
733 wxChar *p = tmp;
734
735 TEXTRANGE textRange;
736 textRange.chrg.cpMin = from;
737 textRange.chrg.cpMax = to;
738 textRange.lpstrText = p;
739
740 (void)::SendMessage(GetHwnd(), EM_GETTEXTRANGE,
741 0, (LPARAM)&textRange);
742
743 if ( m_verRichEdit > 1 )
744 {
745 // RichEdit 2.0 uses just CR ('\r') for the
746 // newlines which is neither Unix nor Windows
747 // style - convert it to something reasonable
748 for ( ; *p; p++ )
749 {
750 if ( *p == _T('\r') )
751 *p = _T('\n');
752 }
753 }
754 }
755
756 if ( m_verRichEdit == 1 )
757 {
758 // convert to the canonical form - see comment below
759 str = wxTextFile::Translate(str, wxTextFileType_Unix);
760 }
761 }
762 //else: no text at all, leave the string empty
763 }
764 else
765 #endif // wxUSE_RICHEDIT
766 {
767 // retrieve all text
768 str = wxGetWindowText(GetHWND());
769
770 // need only a range?
771 if ( from < to )
772 {
773 str = str.Mid(from, to - from);
774 }
775
776 // WM_GETTEXT uses standard DOS CR+LF (\r\n) convention - convert to the
777 // canonical one (same one as above) for consistency with the other kinds
778 // of controls and, more importantly, with the other ports
779 str = wxTextFile::Translate(str, wxTextFileType_Unix);
780 }
781
782 return str;
783 }
784
785 void wxTextCtrl::SetValue(const wxString& value)
786 {
787 // if the text is long enough, it's faster to just set it instead of first
788 // comparing it with the old one (chances are that it will be different
789 // anyhow, this comparison is there to avoid flicker for small single-line
790 // edit controls mostly)
791 if ( (value.length() > 0x400) || (value != GetValue()) )
792 {
793 DoWriteText(value, false /* not selection only */);
794
795 // mark the control as being not dirty - we changed its text, not the
796 // user
797 DiscardEdits();
798
799 // for compatibility, don't move the cursor when doing SetValue()
800 SetInsertionPoint(0);
801 }
802 else // same text
803 {
804 // still reset the modified flag even if the value didn't really change
805 // because now it comes from the program and not the user (and do it
806 // before generating the event so that the event handler could get the
807 // expected value from IsModified())
808 DiscardEdits();
809
810 // still send an event for consistency
811 SendUpdateEvent();
812 }
813 }
814
815 #if wxUSE_RICHEDIT && (!wxUSE_UNICODE || wxUSE_UNICODE_MSLU)
816
817 // TODO: using memcpy() would improve performance a lot for big amounts of text
818
819 DWORD CALLBACK
820 wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb)
821 {
822 *pcb = 0;
823
824 const wchar_t ** const ppws = (const wchar_t **)dwCookie;
825
826 wchar_t *wbuf = (wchar_t *)buf;
827 const wchar_t *wpc = *ppws;
828 while ( cb && *wpc )
829 {
830 *wbuf++ = *wpc++;
831
832 cb -= sizeof(wchar_t);
833 (*pcb) += sizeof(wchar_t);
834 }
835
836 *ppws = wpc;
837
838 return 0;
839 }
840
841 // helper struct used to pass parameters from wxTextCtrl to wxRichEditStreamOut
842 struct wxStreamOutData
843 {
844 wchar_t *wpc;
845 size_t len;
846 };
847
848 DWORD CALLBACK
849 wxRichEditStreamOut(DWORD_PTR dwCookie, BYTE *buf, LONG cb, LONG *pcb)
850 {
851 *pcb = 0;
852
853 wxStreamOutData *data = (wxStreamOutData *)dwCookie;
854
855 const wchar_t *wbuf = (const wchar_t *)buf;
856 wchar_t *wpc = data->wpc;
857 while ( cb )
858 {
859 wchar_t wch = *wbuf++;
860
861 // turn "\r\n" into "\n" on the fly
862 if ( wch != L'\r' )
863 *wpc++ = wch;
864 else
865 data->len--;
866
867 cb -= sizeof(wchar_t);
868 (*pcb) += sizeof(wchar_t);
869 }
870
871 data->wpc = wpc;
872
873 return 0;
874 }
875
876
877 #if wxUSE_UNICODE_MSLU
878 #define UNUSED_IF_MSLU(param)
879 #else
880 #define UNUSED_IF_MSLU(param) param
881 #endif
882
883 bool
884 wxTextCtrl::StreamIn(const wxString& value,
885 wxFontEncoding UNUSED_IF_MSLU(encoding),
886 bool selectionOnly)
887 {
888 #if wxUSE_UNICODE_MSLU
889 const wchar_t *wpc = value.c_str();
890 #else // !wxUSE_UNICODE_MSLU
891 wxCSConv conv(encoding);
892
893 const size_t len = conv.MB2WC(NULL, value, value.length());
894
895 #if wxUSE_WCHAR_T
896 wxWCharBuffer wchBuf(len);
897 wchar_t *wpc = wchBuf.data();
898 #else
899 wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
900 wchar_t *wpc = wchBuf;
901 #endif
902
903 conv.MB2WC(wpc, value, value.length());
904 #endif // wxUSE_UNICODE_MSLU
905
906 // finally, stream it in the control
907 EDITSTREAM eds;
908 wxZeroMemory(eds);
909 eds.dwCookie = (DWORD)&wpc;
910 // the cast below is needed for broken (very) old mingw32 headers
911 eds.pfnCallback = (EDITSTREAMCALLBACK)wxRichEditStreamIn;
912
913 // same problem as in DoWriteText(): we can get multiple events here
914 UpdatesCountFilter ucf(m_updatesCount);
915
916 ::SendMessage(GetHwnd(), EM_STREAMIN,
917 SF_TEXT |
918 SF_UNICODE |
919 (selectionOnly ? SFF_SELECTION : 0),
920 (LPARAM)&eds);
921
922 // It's okay for EN_UPDATE to not be sent if the selection is empty and
923 // the text is empty, otherwise warn the programmer about it.
924 wxASSERT_MSG( ucf.GotUpdate() || ( !HasSelection() && value.empty() ),
925 _T("EM_STREAMIN didn't send EN_UPDATE?") );
926
927 if ( eds.dwError )
928 {
929 wxLogLastError(_T("EM_STREAMIN"));
930 }
931
932 #if !wxUSE_WCHAR_T
933 free(wchBuf);
934 #endif // !wxUSE_WCHAR_T
935
936 return true;
937 }
938
939 #if !wxUSE_UNICODE_MSLU
940
941 wxString
942 wxTextCtrl::StreamOut(wxFontEncoding encoding, bool selectionOnly) const
943 {
944 wxString out;
945
946 const int len = GetWindowTextLength(GetHwnd());
947
948 #if wxUSE_WCHAR_T
949 wxWCharBuffer wchBuf(len);
950 wchar_t *wpc = wchBuf.data();
951 #else
952 wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
953 wchar_t *wpc = wchBuf;
954 #endif
955
956 wxStreamOutData data;
957 data.wpc = wpc;
958 data.len = len;
959
960 EDITSTREAM eds;
961 wxZeroMemory(eds);
962 eds.dwCookie = (DWORD)&data;
963 eds.pfnCallback = wxRichEditStreamOut;
964
965 ::SendMessage
966 (
967 GetHwnd(),
968 EM_STREAMOUT,
969 SF_TEXT | SF_UNICODE | (selectionOnly ? SFF_SELECTION : 0),
970 (LPARAM)&eds
971 );
972
973 if ( eds.dwError )
974 {
975 wxLogLastError(_T("EM_STREAMOUT"));
976 }
977 else // streamed out ok
978 {
979 // NUL-terminate the string because its length could have been
980 // decreased by wxRichEditStreamOut
981 *(wchBuf.data() + data.len) = L'\0';
982
983 // now convert to the given encoding (this is a possibly lossful
984 // conversion but what else can we do)
985 wxCSConv conv(encoding);
986 size_t lenNeeded = conv.WC2MB(NULL, wchBuf, 0);
987 if ( lenNeeded++ )
988 {
989 conv.WC2MB(wxStringBuffer(out, lenNeeded), wchBuf, lenNeeded);
990 }
991 }
992
993 #if !wxUSE_WCHAR_T
994 free(wchBuf);
995 #endif // !wxUSE_WCHAR_T
996
997 return out;
998 }
999
1000 #endif // !wxUSE_UNICODE_MSLU
1001
1002 #endif // wxUSE_RICHEDIT
1003
1004 void wxTextCtrl::WriteText(const wxString& value)
1005 {
1006 DoWriteText(value);
1007 }
1008
1009 void wxTextCtrl::DoWriteText(const wxString& value, bool selectionOnly)
1010 {
1011 wxString valueDos;
1012 if ( m_windowStyle & wxTE_MULTILINE )
1013 valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
1014 else
1015 valueDos = value;
1016
1017 #if wxUSE_RICHEDIT
1018 // there are several complications with the rich edit controls here
1019 bool done = false;
1020 if ( IsRich() )
1021 {
1022 // first, ensure that the new text will be in the default style
1023 if ( !m_defaultStyle.IsDefault() )
1024 {
1025 long start, end;
1026 GetSelection(&start, &end);
1027 SetStyle(start, end, m_defaultStyle);
1028 }
1029
1030 #if wxUSE_UNICODE_MSLU
1031 // RichEdit doesn't have Unicode version of EM_REPLACESEL on Win9x,
1032 // but EM_STREAMIN works
1033 if ( wxUsingUnicowsDll() && GetRichVersion() > 1 )
1034 {
1035 done = StreamIn(valueDos, wxFONTENCODING_SYSTEM, selectionOnly);
1036 }
1037 #endif // wxUSE_UNICODE_MSLU
1038
1039 #if !wxUSE_UNICODE
1040 // next check if the text we're inserting must be shown in a non
1041 // default charset -- this only works for RichEdit > 1.0
1042 if ( GetRichVersion() > 1 )
1043 {
1044 wxFont font = m_defaultStyle.GetFont();
1045 if ( !font.Ok() )
1046 font = GetFont();
1047
1048 if ( font.Ok() )
1049 {
1050 wxFontEncoding encoding = font.GetEncoding();
1051 if ( encoding != wxFONTENCODING_SYSTEM )
1052 {
1053 // we have to use EM_STREAMIN to force richedit control 2.0+
1054 // to show any text in the non default charset -- otherwise
1055 // it thinks it knows better than we do and always shows it
1056 // in the default one
1057 done = StreamIn(valueDos, encoding, selectionOnly);
1058 }
1059 }
1060 }
1061 #endif // !wxUSE_UNICODE
1062 }
1063
1064 if ( !done )
1065 #endif // wxUSE_RICHEDIT
1066 {
1067 // in some cases we get 2 EN_CHANGE notifications after the SendMessage
1068 // call (this happens for plain EDITs with EM_REPLACESEL and under some
1069 // -- undetermined -- conditions with rich edit) and sometimes we don't
1070 // get any events at all (plain EDIT with WM_SETTEXT), so ensure that
1071 // we generate exactly one of them by ignoring all but the first one in
1072 // SendUpdateEvent() and generating one ourselves if we hadn't got any
1073 // notifications from Windows
1074 UpdatesCountFilter ucf(m_updatesCount);
1075
1076 ::SendMessage(GetHwnd(), selectionOnly ? EM_REPLACESEL : WM_SETTEXT,
1077 // EM_REPLACESEL takes 1 to indicate the operation should be redoable
1078 selectionOnly ? 1 : 0, (LPARAM)valueDos.c_str());
1079
1080 if ( !ucf.GotUpdate() )
1081 {
1082 SendUpdateEvent();
1083 }
1084 }
1085 }
1086
1087 void wxTextCtrl::AppendText(const wxString& text)
1088 {
1089 SetInsertionPointEnd();
1090
1091 WriteText(text);
1092
1093 #if wxUSE_RICHEDIT
1094 // don't do this if we're frozen, saves some time
1095 if ( !IsFrozen() && IsMultiLine() && GetRichVersion() > 1 )
1096 {
1097 // setting the caret to the end and showing it simply doesn't work for
1098 // RichEdit 2.0 -- force it to still do what we want
1099 ::SendMessage(GetHwnd(), EM_LINESCROLL, 0, GetNumberOfLines());
1100 }
1101 #endif // wxUSE_RICHEDIT
1102 }
1103
1104 void wxTextCtrl::Clear()
1105 {
1106 ::SetWindowText(GetHwnd(), wxEmptyString);
1107
1108 #if wxUSE_RICHEDIT
1109 if ( !IsRich() )
1110 #endif // wxUSE_RICHEDIT
1111 {
1112 // rich edit controls send EN_UPDATE from WM_SETTEXT handler themselves
1113 // but the normal ones don't -- make Clear() behaviour consistent by
1114 // always sending this event
1115
1116 // Windows already sends an update event for single-line
1117 // controls.
1118 if ( m_windowStyle & wxTE_MULTILINE )
1119 SendUpdateEvent();
1120 }
1121 }
1122
1123 #ifdef __WIN32__
1124
1125 bool wxTextCtrl::EmulateKeyPress(const wxKeyEvent& event)
1126 {
1127 SetFocus();
1128
1129 size_t lenOld = GetValue().length();
1130
1131 wxUint32 code = event.GetRawKeyCode();
1132 ::keybd_event((BYTE)code, 0, 0 /* key press */, 0);
1133 ::keybd_event((BYTE)code, 0, KEYEVENTF_KEYUP, 0);
1134
1135 // assume that any alphanumeric key changes the total number of characters
1136 // in the control - this should work in 99% of cases
1137 return GetValue().length() != lenOld;
1138 }
1139
1140 #endif // __WIN32__
1141
1142 // ----------------------------------------------------------------------------
1143 // Clipboard operations
1144 // ----------------------------------------------------------------------------
1145
1146 void wxTextCtrl::Copy()
1147 {
1148 if (CanCopy())
1149 {
1150 ::SendMessage(GetHwnd(), WM_COPY, 0, 0L);
1151 }
1152 }
1153
1154 void wxTextCtrl::Cut()
1155 {
1156 if (CanCut())
1157 {
1158 ::SendMessage(GetHwnd(), WM_CUT, 0, 0L);
1159 }
1160 }
1161
1162 void wxTextCtrl::Paste()
1163 {
1164 if (CanPaste())
1165 {
1166 ::SendMessage(GetHwnd(), WM_PASTE, 0, 0L);
1167 }
1168 }
1169
1170 bool wxTextCtrl::HasSelection() const
1171 {
1172 long from, to;
1173 GetSelection(&from, &to);
1174 return from != to;
1175 }
1176
1177 bool wxTextCtrl::CanCopy() const
1178 {
1179 // Can copy if there's a selection
1180 return HasSelection();
1181 }
1182
1183 bool wxTextCtrl::CanCut() const
1184 {
1185 return CanCopy() && IsEditable();
1186 }
1187
1188 bool wxTextCtrl::CanPaste() const
1189 {
1190 if ( !IsEditable() )
1191 return false;
1192
1193 #if wxUSE_RICHEDIT
1194 if ( IsRich() )
1195 {
1196 UINT cf = 0; // 0 == any format
1197
1198 return ::SendMessage(GetHwnd(), EM_CANPASTE, cf, 0) != 0;
1199 }
1200 #endif // wxUSE_RICHEDIT
1201
1202 // Standard edit control: check for straight text on clipboard
1203 if ( !::OpenClipboard(GetHwndOf(wxTheApp->GetTopWindow())) )
1204 return false;
1205
1206 bool isTextAvailable = ::IsClipboardFormatAvailable(CF_TEXT) != 0;
1207 ::CloseClipboard();
1208
1209 return isTextAvailable;
1210 }
1211
1212 // ----------------------------------------------------------------------------
1213 // Accessors
1214 // ----------------------------------------------------------------------------
1215
1216 void wxTextCtrl::SetEditable(bool editable)
1217 {
1218 HWND hWnd = GetHwnd();
1219 ::SendMessage(hWnd, EM_SETREADONLY, (WPARAM)!editable, (LPARAM)0L);
1220 }
1221
1222 void wxTextCtrl::SetInsertionPoint(long pos)
1223 {
1224 DoSetSelection(pos, pos);
1225 }
1226
1227 void wxTextCtrl::SetInsertionPointEnd()
1228 {
1229 // we must not do anything if the caret is already there because calling
1230 // SetInsertionPoint() thaws the controls if Freeze() had been called even
1231 // if it doesn't actually move the caret anywhere and so the simple fact of
1232 // doing it results in horrible flicker when appending big amounts of text
1233 // to the control in a few chunks (see DoAddText() test in the text sample)
1234 const wxTextPos lastPosition = GetLastPosition();
1235 if ( GetInsertionPoint() == lastPosition )
1236 {
1237 return;
1238 }
1239
1240 long pos;
1241
1242 #if wxUSE_RICHEDIT
1243 if ( m_verRichEdit == 1 )
1244 {
1245 // we don't have to waste time calling GetLastPosition() in this case
1246 pos = -1;
1247 }
1248 else // !RichEdit 1.0
1249 #endif // wxUSE_RICHEDIT
1250 {
1251 pos = lastPosition;
1252 }
1253
1254 SetInsertionPoint(pos);
1255 }
1256
1257 long wxTextCtrl::GetInsertionPoint() const
1258 {
1259 #if wxUSE_RICHEDIT
1260 if ( IsRich() )
1261 {
1262 CHARRANGE range;
1263 range.cpMin = 0;
1264 range.cpMax = 0;
1265 ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
1266 return range.cpMin;
1267 }
1268 #endif // wxUSE_RICHEDIT
1269
1270 DWORD Pos = (DWORD)::SendMessage(GetHwnd(), EM_GETSEL, 0, 0L);
1271 return Pos & 0xFFFF;
1272 }
1273
1274 wxTextPos wxTextCtrl::GetLastPosition() const
1275 {
1276 int numLines = GetNumberOfLines();
1277 long posStartLastLine = XYToPosition(0, numLines - 1);
1278
1279 long lenLastLine = GetLengthOfLineContainingPos(posStartLastLine);
1280
1281 return posStartLastLine + lenLastLine;
1282 }
1283
1284 // If the return values from and to are the same, there is no
1285 // selection.
1286 void wxTextCtrl::GetSelection(long* from, long* to) const
1287 {
1288 #if wxUSE_RICHEDIT
1289 if ( IsRich() )
1290 {
1291 CHARRANGE charRange;
1292 ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &charRange);
1293
1294 *from = charRange.cpMin;
1295 *to = charRange.cpMax;
1296 }
1297 else
1298 #endif // !wxUSE_RICHEDIT
1299 {
1300 DWORD dwStart, dwEnd;
1301 ::SendMessage(GetHwnd(), EM_GETSEL, (WPARAM)&dwStart, (LPARAM)&dwEnd);
1302
1303 *from = dwStart;
1304 *to = dwEnd;
1305 }
1306 }
1307
1308 bool wxTextCtrl::IsEditable() const
1309 {
1310 // strangely enough, we may be called before the control is created: our
1311 // own Create() calls MSWGetStyle() which calls AcceptsFocus() which calls
1312 // us
1313 if ( !m_hWnd )
1314 return true;
1315
1316 long style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1317
1318 return (style & ES_READONLY) == 0;
1319 }
1320
1321 // ----------------------------------------------------------------------------
1322 // selection
1323 // ----------------------------------------------------------------------------
1324
1325 void wxTextCtrl::SetSelection(long from, long to)
1326 {
1327 // if from and to are both -1, it means (in wxWidgets) that all text should
1328 // be selected - translate into Windows convention
1329 if ( (from == -1) && (to == -1) )
1330 {
1331 from = 0;
1332 to = -1;
1333 }
1334
1335 DoSetSelection(from, to);
1336 }
1337
1338 void wxTextCtrl::DoSetSelection(long from, long to, bool scrollCaret)
1339 {
1340 HWND hWnd = GetHwnd();
1341
1342 #if wxUSE_RICHEDIT
1343 if ( IsRich() )
1344 {
1345 CHARRANGE range;
1346 range.cpMin = from;
1347 range.cpMax = to;
1348 ::SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM) &range);
1349 }
1350 else
1351 #endif // wxUSE_RICHEDIT
1352 {
1353 ::SendMessage(hWnd, EM_SETSEL, (WPARAM)from, (LPARAM)to);
1354 }
1355
1356 if ( scrollCaret && !IsFrozen() )
1357 {
1358 #if wxUSE_RICHEDIT
1359 // richedit 3.0 (i.e. the version living in riched20.dll distributed
1360 // with Windows 2000 and beyond) doesn't honour EM_SCROLLCARET when
1361 // emulating richedit 2.0 unless the control has focus or ECO_NOHIDESEL
1362 // option is set (but it does work ok in richedit 1.0 mode...)
1363 //
1364 // so to make it work we either need to give focus to it here which
1365 // will probably create many problems (dummy focus events; window
1366 // containing the text control being brought to foreground
1367 // unexpectedly; ...) or to temporarily set ECO_NOHIDESEL which may
1368 // create other problems too -- and in fact it does because if we turn
1369 // on/off this style while appending the text to the control, the
1370 // vertical scrollbar never appears in it even if we append tons of
1371 // text and to work around this the only solution I found was to use
1372 // ES_DISABLENOSCROLL
1373 //
1374 // this is very ugly but I don't see any other way to make this work
1375 long style = 0;
1376 if ( GetRichVersion() > 1 )
1377 {
1378 if ( !HasFlag(wxTE_NOHIDESEL) )
1379 {
1380 // setting ECO_NOHIDESEL also sets WS_VISIBLE and possibly
1381 // others, remember the style so we can reset it later if needed
1382 style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1383 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1384 ECOOP_OR, ECO_NOHIDESEL);
1385 }
1386 //else: everything is already ok
1387 }
1388 #endif // wxUSE_RICHEDIT
1389
1390 ::SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
1391
1392 #if wxUSE_RICHEDIT
1393 // restore ECO_NOHIDESEL if we changed it
1394 if ( GetRichVersion() > 1 && !HasFlag(wxTE_NOHIDESEL) )
1395 {
1396 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1397 ECOOP_AND, ~ECO_NOHIDESEL);
1398 if ( style != ::GetWindowLong(GetHwnd(), GWL_STYLE) )
1399 ::SetWindowLong(GetHwnd(), GWL_STYLE, style);
1400 }
1401 #endif // wxUSE_RICHEDIT
1402 }
1403 }
1404
1405 // ----------------------------------------------------------------------------
1406 // Working with files
1407 // ----------------------------------------------------------------------------
1408
1409 bool wxTextCtrl::LoadFile(const wxString& file)
1410 {
1411 if ( wxTextCtrlBase::LoadFile(file) )
1412 {
1413 // update the size limit if needed
1414 AdjustSpaceLimit();
1415
1416 return true;
1417 }
1418
1419 return false;
1420 }
1421
1422 // ----------------------------------------------------------------------------
1423 // Editing
1424 // ----------------------------------------------------------------------------
1425
1426 void wxTextCtrl::Replace(long from, long to, const wxString& value)
1427 {
1428 // Set selection and remove it
1429 DoSetSelection(from, to, false /* don't scroll caret into view */);
1430
1431 DoWriteText(value, true /* selection only */);
1432 }
1433
1434 void wxTextCtrl::Remove(long from, long to)
1435 {
1436 Replace(from, to, wxEmptyString);
1437 }
1438
1439 bool wxTextCtrl::IsModified() const
1440 {
1441 return ::SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0;
1442 }
1443
1444 void wxTextCtrl::MarkDirty()
1445 {
1446 ::SendMessage(GetHwnd(), EM_SETMODIFY, TRUE, 0L);
1447 }
1448
1449 void wxTextCtrl::DiscardEdits()
1450 {
1451 ::SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0L);
1452 }
1453
1454 int wxTextCtrl::GetNumberOfLines() const
1455 {
1456 return (int)::SendMessage(GetHwnd(), EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0);
1457 }
1458
1459 // ----------------------------------------------------------------------------
1460 // Positions <-> coords
1461 // ----------------------------------------------------------------------------
1462
1463 long wxTextCtrl::XYToPosition(long x, long y) const
1464 {
1465 // This gets the char index for the _beginning_ of this line
1466 long charIndex = ::SendMessage(GetHwnd(), EM_LINEINDEX, (WPARAM)y, (LPARAM)0);
1467
1468 return charIndex + x;
1469 }
1470
1471 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
1472 {
1473 HWND hWnd = GetHwnd();
1474
1475 // This gets the line number containing the character
1476 long lineNo;
1477 #if wxUSE_RICHEDIT
1478 if ( IsRich() )
1479 {
1480 lineNo = ::SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, (LPARAM)pos);
1481 }
1482 else
1483 #endif // wxUSE_RICHEDIT
1484 {
1485 lineNo = ::SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, 0);
1486 }
1487
1488 if ( lineNo == -1 )
1489 {
1490 // no such line
1491 return false;
1492 }
1493
1494 // This gets the char index for the _beginning_ of this line
1495 long charIndex = ::SendMessage(hWnd, EM_LINEINDEX, (WPARAM)lineNo, (LPARAM)0);
1496 if ( charIndex == -1 )
1497 {
1498 return false;
1499 }
1500
1501 // The X position must therefore be the different between pos and charIndex
1502 if ( x )
1503 *x = pos - charIndex;
1504 if ( y )
1505 *y = lineNo;
1506
1507 return true;
1508 }
1509
1510 wxTextCtrlHitTestResult
1511 wxTextCtrl::HitTest(const wxPoint& pt, long *posOut) const
1512 {
1513 // first get the position from Windows
1514 LPARAM lParam;
1515
1516 #if wxUSE_RICHEDIT
1517 POINTL ptl;
1518 if ( IsRich() )
1519 {
1520 // for rich edit controls the position is passed iva the struct fields
1521 ptl.x = pt.x;
1522 ptl.y = pt.y;
1523 lParam = (LPARAM)&ptl;
1524 }
1525 else
1526 #endif // wxUSE_RICHEDIT
1527 {
1528 // for the plain ones, we are limited to 16 bit positions which are
1529 // combined in a single 32 bit value
1530 lParam = MAKELPARAM(pt.x, pt.y);
1531 }
1532
1533 LRESULT pos = ::SendMessage(GetHwnd(), EM_CHARFROMPOS, 0, lParam);
1534
1535 if ( pos == -1 )
1536 {
1537 // this seems to indicate an error...
1538 return wxTE_HT_UNKNOWN;
1539 }
1540
1541 #if wxUSE_RICHEDIT
1542 if ( !IsRich() )
1543 #endif // wxUSE_RICHEDIT
1544 {
1545 // for plain EDIT controls the higher word contains something else
1546 pos = LOWORD(pos);
1547 }
1548
1549
1550 // next determine where it is relatively to our point: EM_CHARFROMPOS
1551 // always returns the closest character but we need to be more precise, so
1552 // double check that we really are where it pretends
1553 POINTL ptReal;
1554
1555 #if wxUSE_RICHEDIT
1556 // FIXME: we need to distinguish between richedit 2 and 3 here somehow but
1557 // we don't know how to do it
1558 if ( IsRich() )
1559 {
1560 ::SendMessage(GetHwnd(), EM_POSFROMCHAR, (WPARAM)&ptReal, pos);
1561 }
1562 else
1563 #endif // wxUSE_RICHEDIT
1564 {
1565 LRESULT lRc = ::SendMessage(GetHwnd(), EM_POSFROMCHAR, pos, 0);
1566
1567 if ( lRc == -1 )
1568 {
1569 // this is apparently returned when pos corresponds to the last
1570 // position
1571 ptReal.x =
1572 ptReal.y = 0;
1573 }
1574 else
1575 {
1576 ptReal.x = LOWORD(lRc);
1577 ptReal.y = HIWORD(lRc);
1578 }
1579 }
1580
1581 wxTextCtrlHitTestResult rc;
1582
1583 if ( pt.y > ptReal.y + GetCharHeight() )
1584 rc = wxTE_HT_BELOW;
1585 else if ( pt.x > ptReal.x + GetCharWidth() )
1586 rc = wxTE_HT_BEYOND;
1587 else
1588 rc = wxTE_HT_ON_TEXT;
1589
1590 if ( posOut )
1591 *posOut = pos;
1592
1593 return rc;
1594 }
1595
1596 // ----------------------------------------------------------------------------
1597 //
1598 // ----------------------------------------------------------------------------
1599
1600 void wxTextCtrl::ShowPosition(long pos)
1601 {
1602 HWND hWnd = GetHwnd();
1603
1604 // To scroll to a position, we pass the number of lines and characters
1605 // to scroll *by*. This means that we need to:
1606 // (1) Find the line position of the current line.
1607 // (2) Find the line position of pos.
1608 // (3) Scroll by (pos - current).
1609 // For now, ignore the horizontal scrolling.
1610
1611 // Is this where scrolling is relative to - the line containing the caret?
1612 // Or is the first visible line??? Try first visible line.
1613 // int currentLineLineNo1 = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)-1, (LPARAM)0L);
1614
1615 int currentLineLineNo = (int)::SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, (WPARAM)0, (LPARAM)0L);
1616
1617 int specifiedLineLineNo = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, (LPARAM)0L);
1618
1619 int linesToScroll = specifiedLineLineNo - currentLineLineNo;
1620
1621 if (linesToScroll != 0)
1622 (void)::SendMessage(hWnd, EM_LINESCROLL, (WPARAM)0, (LPARAM)linesToScroll);
1623 }
1624
1625 long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const
1626 {
1627 return ::SendMessage(GetHwnd(), EM_LINELENGTH, (WPARAM)pos, 0);
1628 }
1629
1630 int wxTextCtrl::GetLineLength(long lineNo) const
1631 {
1632 long pos = XYToPosition(0, lineNo);
1633
1634 return GetLengthOfLineContainingPos(pos);
1635 }
1636
1637 wxString wxTextCtrl::GetLineText(long lineNo) const
1638 {
1639 size_t len = (size_t)GetLineLength(lineNo) + 1;
1640
1641 // there must be at least enough place for the length WORD in the
1642 // buffer
1643 len += sizeof(WORD);
1644
1645 wxString str;
1646 {
1647 wxStringBufferLength tmp(str, len);
1648 wxChar *buf = tmp;
1649
1650 *(WORD *)buf = (WORD)len;
1651 len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf);
1652
1653 #if wxUSE_RICHEDIT
1654 if ( IsRich() )
1655 {
1656 // remove the '\r' returned by the rich edit control, the user code
1657 // should never see it
1658 if ( buf[len - 2] == _T('\r') && buf[len - 1] == _T('\n') )
1659 {
1660 buf[len - 2] = _T('\n');
1661 len--;
1662 }
1663 }
1664 #endif // wxUSE_RICHEDIT
1665
1666 // remove the '\n' at the end, if any (this is how this function is
1667 // supposed to work according to the docs)
1668 if ( buf[len - 1] == _T('\n') )
1669 {
1670 len--;
1671 }
1672
1673 buf[len] = 0;
1674 tmp.SetLength(len);
1675 }
1676
1677 return str;
1678 }
1679
1680 void wxTextCtrl::SetMaxLength(unsigned long len)
1681 {
1682 #if wxUSE_RICHEDIT
1683 if ( IsRich() )
1684 {
1685 ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, len ? len : 0x7fffffff);
1686 }
1687 else
1688 #endif // wxUSE_RICHEDIT
1689 {
1690 if ( len >= 0xffff )
1691 {
1692 // this will set it to a platform-dependent maximum (much more
1693 // than 64Kb under NT)
1694 len = 0;
1695 }
1696
1697 ::SendMessage(GetHwnd(), EM_LIMITTEXT, len, 0);
1698 }
1699 }
1700
1701 // ----------------------------------------------------------------------------
1702 // Undo/redo
1703 // ----------------------------------------------------------------------------
1704
1705 void wxTextCtrl::Undo()
1706 {
1707 if (CanUndo())
1708 {
1709 ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1710 }
1711 }
1712
1713 void wxTextCtrl::Redo()
1714 {
1715 if (CanRedo())
1716 {
1717 #if wxUSE_RICHEDIT
1718 if (GetRichVersion() > 1)
1719 ::SendMessage(GetHwnd(), EM_REDO, 0, 0);
1720 else
1721 #endif
1722 // Same as Undo, since Undo undoes the undo, i.e. a redo.
1723 ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1724 }
1725 }
1726
1727 bool wxTextCtrl::CanUndo() const
1728 {
1729 return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1730 }
1731
1732 bool wxTextCtrl::CanRedo() const
1733 {
1734 #if wxUSE_RICHEDIT
1735 if (GetRichVersion() > 1)
1736 return ::SendMessage(GetHwnd(), EM_CANREDO, 0, 0) != 0;
1737 else
1738 #endif
1739 return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1740 }
1741
1742 // ----------------------------------------------------------------------------
1743 // caret handling (Windows only)
1744 // ----------------------------------------------------------------------------
1745
1746 bool wxTextCtrl::ShowNativeCaret(bool show)
1747 {
1748 if ( show != m_isNativeCaretShown )
1749 {
1750 if ( !(show ? ::ShowCaret(GetHwnd()) : ::HideCaret(GetHwnd())) )
1751 {
1752 // not an error, may simply indicate that it's not shown/hidden
1753 // yet (i.e. it had been hidden/showh 2 times before)
1754 return false;
1755 }
1756
1757 m_isNativeCaretShown = show;
1758 }
1759
1760 return true;
1761 }
1762
1763 // ----------------------------------------------------------------------------
1764 // implemenation details
1765 // ----------------------------------------------------------------------------
1766
1767 void wxTextCtrl::Command(wxCommandEvent & event)
1768 {
1769 SetValue(event.GetString());
1770 ProcessCommand (event);
1771 }
1772
1773 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
1774 {
1775 // By default, load the first file into the text window.
1776 if (event.GetNumberOfFiles() > 0)
1777 {
1778 LoadFile(event.GetFiles()[0]);
1779 }
1780 }
1781
1782 // ----------------------------------------------------------------------------
1783 // kbd input processing
1784 // ----------------------------------------------------------------------------
1785
1786 bool wxTextCtrl::MSWShouldPreProcessMessage(WXMSG* msg)
1787 {
1788 // check for our special keys here: if we don't do it and the parent frame
1789 // uses them as accelerators, they wouldn't work at all, so we disable
1790 // usual preprocessing for them
1791 if ( msg->message == WM_KEYDOWN )
1792 {
1793 const WPARAM vkey = msg->wParam;
1794 if ( HIWORD(msg->lParam) & KF_ALTDOWN )
1795 {
1796 // Alt-Backspace is accelerator for "Undo"
1797 if ( vkey == VK_BACK )
1798 return false;
1799 }
1800 else // no Alt
1801 {
1802 // we want to process some Ctrl-foo and Shift-bar but no key
1803 // combinations without either Ctrl or Shift nor with both of them
1804 // pressed
1805 const int ctrl = wxIsCtrlDown(),
1806 shift = wxIsShiftDown();
1807 switch ( ctrl + shift )
1808 {
1809 default:
1810 wxFAIL_MSG( _T("how many modifiers have we got?") );
1811 // fall through
1812
1813 case 0:
1814 if ( IsMultiLine() && vkey == VK_RETURN )
1815 return false;
1816 // fall through
1817 case 2:
1818 break;
1819
1820 case 1:
1821 // either Ctrl or Shift pressed
1822 if ( ctrl )
1823 {
1824 switch ( vkey )
1825 {
1826 case 'C':
1827 case 'V':
1828 case 'X':
1829 case VK_INSERT:
1830 case VK_DELETE:
1831 case VK_HOME:
1832 case VK_END:
1833 return false;
1834 }
1835 }
1836 else // Shift is pressed
1837 {
1838 if ( vkey == VK_INSERT || vkey == VK_DELETE )
1839 return false;
1840 }
1841 }
1842 }
1843 }
1844
1845 return wxControl::MSWShouldPreProcessMessage(msg);
1846 }
1847
1848 void wxTextCtrl::OnChar(wxKeyEvent& event)
1849 {
1850 switch ( event.GetKeyCode() )
1851 {
1852 case WXK_RETURN:
1853 {
1854 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1855 InitCommandEvent(event);
1856 event.SetString(GetValue());
1857 if ( GetEventHandler()->ProcessEvent(event) )
1858 if ( !HasFlag(wxTE_MULTILINE) )
1859 return;
1860 //else: multiline controls need Enter for themselves
1861 }
1862 break;
1863
1864 case WXK_TAB:
1865 // ok, so this is getting absolutely ridiculous but I don't see
1866 // any other way to fix this bug: when a multiline text control is
1867 // inside a wxFrame, we need to generate the navigation event as
1868 // otherwise nothing happens at all, but when the same control is
1869 // created inside a dialog, IsDialogMessage() *does* switch focus
1870 // all by itself and so if we do it here as well, it is advanced
1871 // twice and goes to the next control... to prevent this from
1872 // happening we're doing this ugly check, the logic being that if
1873 // we don't have focus then it had been already changed to the next
1874 // control
1875 //
1876 // the right thing to do would, of course, be to understand what
1877 // the hell is IsDialogMessage() doing but this is beyond my feeble
1878 // forces at the moment unfortunately
1879 if ( !(m_windowStyle & wxTE_PROCESS_TAB))
1880 {
1881 if ( FindFocus() == this )
1882 {
1883 int flags = 0;
1884 if (!event.ShiftDown())
1885 flags |= wxNavigationKeyEvent::IsForward ;
1886 if (event.ControlDown())
1887 flags |= wxNavigationKeyEvent::WinChange ;
1888 if (Navigate(flags))
1889 return;
1890 }
1891 }
1892 else
1893 {
1894 // Insert tab since calling the default Windows handler
1895 // doesn't seem to do it
1896 WriteText(wxT("\t"));
1897 return;
1898 }
1899 break;
1900 }
1901
1902 // no, we didn't process it
1903 event.Skip();
1904 }
1905
1906 WXLRESULT wxTextCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
1907 {
1908 WXLRESULT lRc = wxTextCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
1909
1910 if ( nMsg == WM_GETDLGCODE )
1911 {
1912 // we always want the chars and the arrows: the arrows for navigation
1913 // and the chars because we want Ctrl-C to work even in a read only
1914 // control
1915 long lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
1916
1917 if ( IsEditable() )
1918 {
1919 // we may have several different cases:
1920 // 1. normal case: both TAB and ENTER are used for dlg navigation
1921 // 2. ctrl which wants TAB for itself: ENTER is used to pass to the
1922 // next control in the dialog
1923 // 3. ctrl which wants ENTER for itself: TAB is used for dialog
1924 // navigation
1925 // 4. ctrl which wants both TAB and ENTER: Ctrl-ENTER is used to go
1926 // to the next control
1927
1928 // the multiline edit control should always get <Return> for itself
1929 if ( HasFlag(wxTE_PROCESS_ENTER) || HasFlag(wxTE_MULTILINE) )
1930 lDlgCode |= DLGC_WANTMESSAGE;
1931
1932 if ( HasFlag(wxTE_PROCESS_TAB) )
1933 lDlgCode |= DLGC_WANTTAB;
1934
1935 lRc |= lDlgCode;
1936 }
1937 else // !editable
1938 {
1939 // NB: use "=", not "|=" as the base class version returns the
1940 // same flags is this state as usual (i.e. including
1941 // DLGC_WANTMESSAGE). This is strange (how does it work in the
1942 // native Win32 apps?) but for now live with it.
1943 lRc = lDlgCode;
1944 }
1945 }
1946
1947 return lRc;
1948 }
1949
1950 // ----------------------------------------------------------------------------
1951 // text control event processing
1952 // ----------------------------------------------------------------------------
1953
1954 bool wxTextCtrl::SendUpdateEvent()
1955 {
1956 switch ( m_updatesCount )
1957 {
1958 case 0:
1959 // remember that we've got an update
1960 m_updatesCount++;
1961 break;
1962
1963 case 1:
1964 // we had already sent one event since the last control modification
1965 return false;
1966
1967 default:
1968 wxFAIL_MSG( _T("unexpected wxTextCtrl::m_updatesCount value") );
1969 // fall through
1970
1971 case -1:
1972 // we hadn't updated the control ourselves, this event comes from
1973 // the user, don't need to ignore it nor update the count
1974 break;
1975 }
1976
1977 wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, GetId());
1978 InitCommandEvent(event);
1979
1980 return ProcessCommand(event);
1981 }
1982
1983 bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
1984 {
1985 switch ( param )
1986 {
1987 case EN_SETFOCUS:
1988 case EN_KILLFOCUS:
1989 {
1990 wxFocusEvent event(param == EN_KILLFOCUS ? wxEVT_KILL_FOCUS
1991 : wxEVT_SET_FOCUS,
1992 m_windowId);
1993 event.SetEventObject(this);
1994 GetEventHandler()->ProcessEvent(event);
1995 }
1996 break;
1997
1998 case EN_CHANGE:
1999 SendUpdateEvent();
2000 break;
2001
2002 case EN_MAXTEXT:
2003 // the text size limit has been hit -- try to increase it
2004 if ( !AdjustSpaceLimit() )
2005 {
2006 wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, m_windowId);
2007 InitCommandEvent(event);
2008 event.SetString(GetValue());
2009 ProcessCommand(event);
2010 }
2011 break;
2012
2013 // the other edit notification messages are not processed
2014 default:
2015 return false;
2016 }
2017
2018 // processed
2019 return true;
2020 }
2021
2022 WXHBRUSH wxTextCtrl::MSWControlColor(WXHDC hDC, WXHWND hWnd)
2023 {
2024 if ( !IsEnabled() && !HasFlag(wxTE_MULTILINE) )
2025 return MSWControlColorDisabled(hDC);
2026
2027 return wxTextCtrlBase::MSWControlColor(hDC, hWnd);
2028 }
2029
2030 bool wxTextCtrl::HasSpaceLimit(unsigned int *len) const
2031 {
2032 // HACK: we try to automatically extend the limit for the amount of text
2033 // to allow (interactively) entering more than 64Kb of text under
2034 // Win9x but we shouldn't reset the text limit which was previously
2035 // set explicitly with SetMaxLength()
2036 //
2037 // Unfortunately there is no EM_GETLIMITTEXTSETBYUSER and so we don't
2038 // know the limit we set (if any). We could solve this by storing the
2039 // limit we set in wxTextCtrl but to save space we prefer to simply
2040 // test here the actual limit value: we consider that SetMaxLength()
2041 // can only be called for small values while EN_MAXTEXT is only sent
2042 // for large values (in practice the default limit seems to be 30000
2043 // but make it smaller just to be on the safe side)
2044 *len = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
2045 return *len < 10001;
2046
2047 }
2048
2049 bool wxTextCtrl::AdjustSpaceLimit()
2050 {
2051 unsigned int limit;
2052 if ( HasSpaceLimit(&limit) )
2053 return false;
2054
2055 unsigned int len = ::GetWindowTextLength(GetHwnd());
2056 if ( len >= limit )
2057 {
2058 // increment in 32Kb chunks
2059 SetMaxLength(len + 0x8000);
2060 }
2061
2062 // we changed the limit
2063 return true;
2064 }
2065
2066 bool wxTextCtrl::AcceptsFocus() const
2067 {
2068 // we don't want focus if we can't be edited unless we're a multiline
2069 // control because then it might be still nice to get focus from keyboard
2070 // to be able to scroll it without mouse
2071 return (IsEditable() || IsMultiLine()) && wxControl::AcceptsFocus();
2072 }
2073
2074 wxSize wxTextCtrl::DoGetBestSize() const
2075 {
2076 int cx, cy;
2077 wxGetCharSize(GetHWND(), &cx, &cy, GetFont());
2078
2079 int wText = DEFAULT_ITEM_WIDTH;
2080
2081 int hText = cy;
2082 if ( m_windowStyle & wxTE_MULTILINE )
2083 {
2084 hText *= wxMax(wxMin(GetNumberOfLines(), 10), 2);
2085 }
2086 //else: for single line control everything is ok
2087
2088 // we have to add the adjustments for the control height only once, not
2089 // once per line, so do it after multiplication above
2090 hText += EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy) - cy;
2091
2092 return wxSize(wText, hText);
2093 }
2094
2095 // ----------------------------------------------------------------------------
2096 // standard handlers for standard edit menu events
2097 // ----------------------------------------------------------------------------
2098
2099 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
2100 {
2101 Cut();
2102 }
2103
2104 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
2105 {
2106 Copy();
2107 }
2108
2109 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
2110 {
2111 Paste();
2112 }
2113
2114 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
2115 {
2116 Undo();
2117 }
2118
2119 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
2120 {
2121 Redo();
2122 }
2123
2124 void wxTextCtrl::OnDelete(wxCommandEvent& WXUNUSED(event))
2125 {
2126 long from, to;
2127 GetSelection(& from, & to);
2128 if (from != -1 && to != -1)
2129 Remove(from, to);
2130 }
2131
2132 void wxTextCtrl::OnSelectAll(wxCommandEvent& WXUNUSED(event))
2133 {
2134 SetSelection(-1, -1);
2135 }
2136
2137 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
2138 {
2139 event.Enable( CanCut() );
2140 }
2141
2142 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
2143 {
2144 event.Enable( CanCopy() );
2145 }
2146
2147 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
2148 {
2149 event.Enable( CanPaste() );
2150 }
2151
2152 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
2153 {
2154 event.Enable( CanUndo() );
2155 }
2156
2157 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
2158 {
2159 event.Enable( CanRedo() );
2160 }
2161
2162 void wxTextCtrl::OnUpdateDelete(wxUpdateUIEvent& event)
2163 {
2164 long from, to;
2165 GetSelection(& from, & to);
2166 event.Enable(from != -1 && to != -1 && from != to && IsEditable()) ;
2167 }
2168
2169 void wxTextCtrl::OnUpdateSelectAll(wxUpdateUIEvent& event)
2170 {
2171 event.Enable(GetLastPosition() > 0);
2172 }
2173
2174 void wxTextCtrl::OnContextMenu(wxContextMenuEvent& event)
2175 {
2176 #if wxUSE_RICHEDIT
2177 if (IsRich())
2178 {
2179 if (!m_privateContextMenu)
2180 {
2181 m_privateContextMenu = new wxMenu;
2182 m_privateContextMenu->Append(wxID_UNDO, _("&Undo"));
2183 m_privateContextMenu->Append(wxID_REDO, _("&Redo"));
2184 m_privateContextMenu->AppendSeparator();
2185 m_privateContextMenu->Append(wxID_CUT, _("Cu&t"));
2186 m_privateContextMenu->Append(wxID_COPY, _("&Copy"));
2187 m_privateContextMenu->Append(wxID_PASTE, _("&Paste"));
2188 m_privateContextMenu->Append(wxID_CLEAR, _("&Delete"));
2189 m_privateContextMenu->AppendSeparator();
2190 m_privateContextMenu->Append(wxID_SELECTALL, _("Select &All"));
2191 }
2192 PopupMenu(m_privateContextMenu);
2193 return;
2194 }
2195 else
2196 #endif
2197 event.Skip();
2198 }
2199
2200 void wxTextCtrl::OnSetFocus(wxFocusEvent& WXUNUSED(event))
2201 {
2202 // be sure the caret remains invisible if the user had hidden it
2203 if ( !m_isNativeCaretShown )
2204 {
2205 ::HideCaret(GetHwnd());
2206 }
2207 }
2208
2209 // ----------------------------------------------------------------------------
2210 // Default colors for MSW text control
2211 //
2212 // Set default background color to the native white instead of
2213 // the default wxSYS_COLOUR_BTNFACE (is triggered with wxNullColour).
2214 // ----------------------------------------------------------------------------
2215
2216 wxVisualAttributes wxTextCtrl::GetDefaultAttributes() const
2217 {
2218 wxVisualAttributes attrs;
2219 attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
2220 attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
2221 attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW); //white
2222
2223 return attrs;
2224 }
2225
2226 // the rest of the file only deals with the rich edit controls
2227 #if wxUSE_RICHEDIT
2228
2229 // ----------------------------------------------------------------------------
2230 // EN_LINK processing
2231 // ----------------------------------------------------------------------------
2232
2233 bool wxTextCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
2234 {
2235 NMHDR *hdr = (NMHDR* )lParam;
2236 switch ( hdr->code )
2237 {
2238 case EN_MSGFILTER:
2239 {
2240 const MSGFILTER *msgf = (MSGFILTER *)lParam;
2241 UINT msg = msgf->msg;
2242
2243 // this is a bit crazy but richedit 1.0 sends us all mouse
2244 // events _except_ WM_LBUTTONUP (don't ask me why) so we have
2245 // generate the wxWin events for this message manually
2246 //
2247 // NB: in fact, this is still not totally correct as it does
2248 // send us WM_LBUTTONUP if the selection was cleared by the
2249 // last click -- so currently we get 2 events in this case,
2250 // but as I don't see any obvious way to check for this I
2251 // leave this code in place because it's still better than
2252 // not getting left up events at all
2253 if ( msg == WM_LBUTTONUP )
2254 {
2255 WXUINT flags = msgf->wParam;
2256 int x = GET_X_LPARAM(msgf->lParam),
2257 y = GET_Y_LPARAM(msgf->lParam);
2258
2259 HandleMouseEvent(msg, x, y, flags);
2260 }
2261 }
2262
2263 // return true to process the event (and false to ignore it)
2264 return true;
2265
2266 case EN_LINK:
2267 {
2268 const ENLINK *enlink = (ENLINK *)hdr;
2269
2270 switch ( enlink->msg )
2271 {
2272 case WM_SETCURSOR:
2273 // ok, so it is hardcoded - do we really nee to
2274 // customize it?
2275 {
2276 wxCursor cur(wxCURSOR_HAND);
2277 ::SetCursor(GetHcursorOf(cur));
2278 *result = TRUE;
2279 break;
2280 }
2281
2282 case WM_MOUSEMOVE:
2283 case WM_LBUTTONDOWN:
2284 case WM_LBUTTONUP:
2285 case WM_LBUTTONDBLCLK:
2286 case WM_RBUTTONDOWN:
2287 case WM_RBUTTONUP:
2288 case WM_RBUTTONDBLCLK:
2289 // send a mouse event
2290 {
2291 static const wxEventType eventsMouse[] =
2292 {
2293 wxEVT_MOTION,
2294 wxEVT_LEFT_DOWN,
2295 wxEVT_LEFT_UP,
2296 wxEVT_LEFT_DCLICK,
2297 wxEVT_RIGHT_DOWN,
2298 wxEVT_RIGHT_UP,
2299 wxEVT_RIGHT_DCLICK,
2300 };
2301
2302 // the event ids are consecutive
2303 wxMouseEvent
2304 evtMouse(eventsMouse[enlink->msg - WM_MOUSEMOVE]);
2305
2306 InitMouseEvent(evtMouse,
2307 GET_X_LPARAM(enlink->lParam),
2308 GET_Y_LPARAM(enlink->lParam),
2309 enlink->wParam);
2310
2311 wxTextUrlEvent event(m_windowId, evtMouse,
2312 enlink->chrg.cpMin,
2313 enlink->chrg.cpMax);
2314
2315 InitCommandEvent(event);
2316
2317 *result = ProcessCommand(event);
2318 }
2319 break;
2320 }
2321 }
2322 return true;
2323 }
2324
2325 // not processed, leave it to the base class
2326 return wxTextCtrlBase::MSWOnNotify(idCtrl, lParam, result);
2327 }
2328
2329 // ----------------------------------------------------------------------------
2330 // colour setting for the rich edit controls
2331 // ----------------------------------------------------------------------------
2332
2333 bool wxTextCtrl::SetBackgroundColour(const wxColour& colour)
2334 {
2335 if ( !wxTextCtrlBase::SetBackgroundColour(colour) )
2336 {
2337 // colour didn't really change
2338 return false;
2339 }
2340
2341 if ( IsRich() )
2342 {
2343 // rich edit doesn't use WM_CTLCOLOR, hence we need to send
2344 // EM_SETBKGNDCOLOR additionally
2345 ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour));
2346 }
2347
2348 return true;
2349 }
2350
2351 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
2352 {
2353 if ( !wxTextCtrlBase::SetForegroundColour(colour) )
2354 {
2355 // colour didn't really change
2356 return false;
2357 }
2358
2359 if ( IsRich() )
2360 {
2361 // change the colour of everything
2362 CHARFORMAT cf;
2363 wxZeroMemory(cf);
2364 cf.cbSize = sizeof(cf);
2365 cf.dwMask = CFM_COLOR;
2366 cf.crTextColor = wxColourToRGB(colour);
2367 ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf);
2368 }
2369
2370 return true;
2371 }
2372
2373 // ----------------------------------------------------------------------------
2374 // styling support for rich edit controls
2375 // ----------------------------------------------------------------------------
2376
2377 #if wxUSE_RICHEDIT
2378
2379 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
2380 {
2381 if ( !IsRich() )
2382 {
2383 // can't do it with normal text control
2384 return false;
2385 }
2386
2387 // the richedit 1.0 doesn't handle setting background colour, so don't
2388 // even try to do anything if it's the only thing we want to change
2389 if ( m_verRichEdit == 1 && !style.HasFont() && !style.HasTextColour() &&
2390 !style.HasLeftIndent() && !style.HasRightIndent() && !style.HasAlignment() &&
2391 !style.HasTabs() )
2392 {
2393 // nothing to do: return true if there was really nothing to do and
2394 // false if we failed to set bg colour
2395 return !style.HasBackgroundColour();
2396 }
2397
2398 // order the range if needed
2399 if ( start > end )
2400 {
2401 long tmp = start;
2402 start = end;
2403 end = tmp;
2404 }
2405
2406 // we can only change the format of the selection, so select the range we
2407 // want and restore the old selection later
2408 long startOld, endOld;
2409 GetSelection(&startOld, &endOld);
2410
2411 // but do we really have to change the selection?
2412 bool changeSel = start != startOld || end != endOld;
2413
2414 if ( changeSel )
2415 {
2416 DoSetSelection(start, end, false /* don't scroll caret into view */);
2417 }
2418
2419 // initialize CHARFORMAT struct
2420 #if wxUSE_RICHEDIT2
2421 CHARFORMAT2 cf;
2422 #else
2423 CHARFORMAT cf;
2424 #endif
2425
2426 wxZeroMemory(cf);
2427
2428 // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2429 // CHARFORMAT in that case
2430 #if wxUSE_RICHEDIT2
2431 if ( m_verRichEdit == 1 )
2432 {
2433 // this is the only thing the control is going to grok
2434 cf.cbSize = sizeof(CHARFORMAT);
2435 }
2436 else
2437 #endif
2438 {
2439 // CHARFORMAT or CHARFORMAT2
2440 cf.cbSize = sizeof(cf);
2441 }
2442
2443 if ( style.HasFont() )
2444 {
2445 // VZ: CFM_CHARSET doesn't seem to do anything at all in RichEdit 2.0
2446 // but using it doesn't seem to hurt neither so leaving it for now
2447
2448 cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET |
2449 CFM_ITALIC | CFM_BOLD | CFM_UNDERLINE;
2450
2451 // fill in data from LOGFONT but recalculate lfHeight because we need
2452 // the real height in twips and not the negative number which
2453 // wxFillLogFont() returns (this is correct in general and works with
2454 // the Windows font mapper, but not here)
2455 LOGFONT lf;
2456 wxFillLogFont(&lf, &style.GetFont());
2457 cf.yHeight = 20*style.GetFont().GetPointSize(); // 1 pt = 20 twips
2458 cf.bCharSet = lf.lfCharSet;
2459 cf.bPitchAndFamily = lf.lfPitchAndFamily;
2460 wxStrncpy( cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName) );
2461
2462 // also deal with underline/italic/bold attributes: note that we must
2463 // always set CFM_ITALIC &c bits in dwMask, even if we don't set the
2464 // style to allow clearing it
2465 if ( lf.lfItalic )
2466 {
2467 cf.dwEffects |= CFE_ITALIC;
2468 }
2469
2470 if ( lf.lfWeight == FW_BOLD )
2471 {
2472 cf.dwEffects |= CFE_BOLD;
2473 }
2474
2475 if ( lf.lfUnderline )
2476 {
2477 cf.dwEffects |= CFE_UNDERLINE;
2478 }
2479
2480 // strikeout fonts are not supported by wxWidgets
2481 }
2482
2483 if ( style.HasTextColour() )
2484 {
2485 cf.dwMask |= CFM_COLOR;
2486 cf.crTextColor = wxColourToRGB(style.GetTextColour());
2487 }
2488
2489 #if wxUSE_RICHEDIT2
2490 if ( m_verRichEdit != 1 && style.HasBackgroundColour() )
2491 {
2492 cf.dwMask |= CFM_BACKCOLOR;
2493 cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
2494 }
2495 #endif // wxUSE_RICHEDIT2
2496
2497 // do format the selection
2498 bool ok = ::SendMessage(GetHwnd(), EM_SETCHARFORMAT,
2499 SCF_SELECTION, (LPARAM)&cf) != 0;
2500 if ( !ok )
2501 {
2502 wxLogDebug(_T("SendMessage(EM_SETCHARFORMAT, SCF_SELECTION) failed"));
2503 }
2504
2505 // now do the paragraph formatting
2506 PARAFORMAT2 pf;
2507 wxZeroMemory(pf);
2508 // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2509 // PARAFORMAT in that case
2510 #if wxUSE_RICHEDIT2
2511 if ( m_verRichEdit == 1 )
2512 {
2513 // this is the only thing the control is going to grok
2514 pf.cbSize = sizeof(PARAFORMAT);
2515 }
2516 else
2517 #endif
2518 {
2519 // PARAFORMAT or PARAFORMAT2
2520 pf.cbSize = sizeof(pf);
2521 }
2522
2523 if (style.HasAlignment())
2524 {
2525 pf.dwMask |= PFM_ALIGNMENT;
2526 if (style.GetAlignment() == wxTEXT_ALIGNMENT_RIGHT)
2527 pf.wAlignment = PFA_RIGHT;
2528 else if (style.GetAlignment() == wxTEXT_ALIGNMENT_CENTRE)
2529 pf.wAlignment = PFA_CENTER;
2530 else if (style.GetAlignment() == wxTEXT_ALIGNMENT_JUSTIFIED)
2531 pf.wAlignment = PFA_JUSTIFY;
2532 else
2533 pf.wAlignment = PFA_LEFT;
2534 }
2535
2536 if (style.HasLeftIndent())
2537 {
2538 pf.dwMask |= PFM_STARTINDENT | PFM_OFFSET;
2539
2540 // Convert from 1/10 mm to TWIPS
2541 pf.dxStartIndent = (int) (((double) style.GetLeftIndent()) * mm2twips / 10.0) ;
2542 pf.dxOffset = (int) (((double) style.GetLeftSubIndent()) * mm2twips / 10.0) ;
2543 }
2544
2545 if (style.HasRightIndent())
2546 {
2547 pf.dwMask |= PFM_RIGHTINDENT;
2548
2549 // Convert from 1/10 mm to TWIPS
2550 pf.dxRightIndent = (int) (((double) style.GetRightIndent()) * mm2twips / 10.0) ;
2551 }
2552
2553 if (style.HasTabs())
2554 {
2555 pf.dwMask |= PFM_TABSTOPS;
2556
2557 const wxArrayInt& tabs = style.GetTabs();
2558
2559 pf.cTabCount = (SHORT)wxMin(tabs.GetCount(), MAX_TAB_STOPS);
2560 size_t i;
2561 for (i = 0; i < (size_t) pf.cTabCount; i++)
2562 {
2563 // Convert from 1/10 mm to TWIPS
2564 pf.rgxTabs[i] = (int) (((double) tabs[i]) * mm2twips / 10.0) ;
2565 }
2566 }
2567
2568 if (pf.dwMask != 0)
2569 {
2570 // do format the selection
2571 bool ok = ::SendMessage(GetHwnd(), EM_SETPARAFORMAT,
2572 0, (LPARAM) &pf) != 0;
2573 if ( !ok )
2574 {
2575 wxLogDebug(_T("SendMessage(EM_SETPARAFORMAT, 0) failed"));
2576 }
2577 }
2578
2579 if ( changeSel )
2580 {
2581 // restore the original selection
2582 DoSetSelection(startOld, endOld, false);
2583 }
2584
2585 return ok;
2586 }
2587
2588 bool wxTextCtrl::SetDefaultStyle(const wxTextAttr& style)
2589 {
2590 if ( !wxTextCtrlBase::SetDefaultStyle(style) )
2591 return false;
2592
2593 if ( IsEditable() )
2594 {
2595 // we have to do this or the style wouldn't apply for the text typed by
2596 // the user
2597 wxTextPos posLast = GetLastPosition();
2598 SetStyle(posLast, posLast, m_defaultStyle);
2599 }
2600
2601 return true;
2602 }
2603
2604 bool wxTextCtrl::GetStyle(long position, wxTextAttr& style)
2605 {
2606 if ( !IsRich() )
2607 {
2608 // can't do it with normal text control
2609 return false;
2610 }
2611
2612 // initialize CHARFORMAT struct
2613 #if wxUSE_RICHEDIT2
2614 CHARFORMAT2 cf;
2615 #else
2616 CHARFORMAT cf;
2617 #endif
2618
2619 wxZeroMemory(cf);
2620
2621 // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2622 // CHARFORMAT in that case
2623 #if wxUSE_RICHEDIT2
2624 if ( m_verRichEdit == 1 )
2625 {
2626 // this is the only thing the control is going to grok
2627 cf.cbSize = sizeof(CHARFORMAT);
2628 }
2629 else
2630 #endif
2631 {
2632 // CHARFORMAT or CHARFORMAT2
2633 cf.cbSize = sizeof(cf);
2634 }
2635 // we can only change the format of the selection, so select the range we
2636 // want and restore the old selection later
2637 long startOld, endOld;
2638 GetSelection(&startOld, &endOld);
2639
2640 // but do we really have to change the selection?
2641 bool changeSel = position != startOld || position != endOld;
2642
2643 if ( changeSel )
2644 {
2645 DoSetSelection(position, position+1, false /* don't scroll caret into view */);
2646 }
2647
2648 // get the selection formatting
2649 (void) ::SendMessage(GetHwnd(), EM_GETCHARFORMAT,
2650 SCF_SELECTION, (LPARAM)&cf) ;
2651
2652
2653 LOGFONT lf;
2654 lf.lfHeight = cf.yHeight;
2655 lf.lfWidth = 0;
2656 lf.lfCharSet = ANSI_CHARSET; // FIXME: how to get correct charset?
2657 lf.lfClipPrecision = 0;
2658 lf.lfEscapement = 0;
2659 wxStrcpy(lf.lfFaceName, cf.szFaceName);
2660
2661 //NOTE: we _MUST_ set each of these values to _something_ since we
2662 //do not call wxZeroMemory on the LOGFONT lf
2663 if (cf.dwEffects & CFE_ITALIC)
2664 lf.lfItalic = TRUE;
2665 else
2666 lf.lfItalic = FALSE;
2667
2668 lf.lfOrientation = 0;
2669 lf.lfPitchAndFamily = cf.bPitchAndFamily;
2670 lf.lfQuality = 0;
2671
2672 if (cf.dwEffects & CFE_STRIKEOUT)
2673 lf.lfStrikeOut = TRUE;
2674 else
2675 lf.lfStrikeOut = FALSE;
2676
2677 if (cf.dwEffects & CFE_UNDERLINE)
2678 lf.lfUnderline = TRUE;
2679 else
2680 lf.lfUnderline = FALSE;
2681
2682 if (cf.dwEffects & CFE_BOLD)
2683 lf.lfWeight = FW_BOLD;
2684 else
2685 lf.lfWeight = FW_NORMAL;
2686
2687 wxFont font = wxCreateFontFromLogFont(& lf);
2688 if (font.Ok())
2689 {
2690 style.SetFont(font);
2691 }
2692 style.SetTextColour(wxColour(cf.crTextColor));
2693
2694 #if wxUSE_RICHEDIT2
2695 if ( m_verRichEdit != 1 )
2696 {
2697 // cf.dwMask |= CFM_BACKCOLOR;
2698 style.SetBackgroundColour(wxColour(cf.crBackColor));
2699 }
2700 #endif // wxUSE_RICHEDIT2
2701
2702 // now get the paragraph formatting
2703 PARAFORMAT2 pf;
2704 wxZeroMemory(pf);
2705 // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2706 // PARAFORMAT in that case
2707 #if wxUSE_RICHEDIT2
2708 if ( m_verRichEdit == 1 )
2709 {
2710 // this is the only thing the control is going to grok
2711 pf.cbSize = sizeof(PARAFORMAT);
2712 }
2713 else
2714 #endif
2715 {
2716 // PARAFORMAT or PARAFORMAT2
2717 pf.cbSize = sizeof(pf);
2718 }
2719
2720 // do format the selection
2721 (void) ::SendMessage(GetHwnd(), EM_GETPARAFORMAT, 0, (LPARAM) &pf) ;
2722
2723 style.SetLeftIndent( (int) ((double) pf.dxStartIndent * twips2mm * 10.0), (int) ((double) pf.dxOffset * twips2mm * 10.0) );
2724 style.SetRightIndent( (int) ((double) pf.dxRightIndent * twips2mm * 10.0) );
2725
2726 if (pf.wAlignment == PFA_CENTER)
2727 style.SetAlignment(wxTEXT_ALIGNMENT_CENTRE);
2728 else if (pf.wAlignment == PFA_RIGHT)
2729 style.SetAlignment(wxTEXT_ALIGNMENT_RIGHT);
2730 else if (pf.wAlignment == PFA_JUSTIFY)
2731 style.SetAlignment(wxTEXT_ALIGNMENT_JUSTIFIED);
2732 else
2733 style.SetAlignment(wxTEXT_ALIGNMENT_LEFT);
2734
2735 wxArrayInt tabStops;
2736 size_t i;
2737 for (i = 0; i < (size_t) pf.cTabCount; i++)
2738 {
2739 tabStops.Add( (int) ((double) (pf.rgxTabs[i] & 0xFFFF) * twips2mm * 10.0) );
2740 }
2741
2742 if ( changeSel )
2743 {
2744 // restore the original selection
2745 DoSetSelection(startOld, endOld, false);
2746 }
2747
2748 return true;
2749 }
2750
2751 #endif
2752
2753 // ----------------------------------------------------------------------------
2754 // wxRichEditModule
2755 // ----------------------------------------------------------------------------
2756
2757 static const HINSTANCE INVALID_HINSTANCE = (HINSTANCE)-1;
2758
2759 bool wxRichEditModule::OnInit()
2760 {
2761 // don't do anything - we will load it when needed
2762 return true;
2763 }
2764
2765 void wxRichEditModule::OnExit()
2766 {
2767 for ( size_t i = 0; i < WXSIZEOF(ms_hRichEdit); i++ )
2768 {
2769 if ( ms_hRichEdit[i] && ms_hRichEdit[i] != INVALID_HINSTANCE )
2770 {
2771 ::FreeLibrary(ms_hRichEdit[i]);
2772 ms_hRichEdit[i] = NULL;
2773 }
2774 }
2775 #if wxUSE_INKEDIT
2776 if (ms_inkEditLib.IsLoaded())
2777 ms_inkEditLib.Unload();
2778 #endif
2779 }
2780
2781 /* static */
2782 bool wxRichEditModule::Load(Version version)
2783 {
2784 if ( ms_hRichEdit[version] == INVALID_HINSTANCE )
2785 {
2786 // we had already tried to load it and failed
2787 return false;
2788 }
2789
2790 if ( ms_hRichEdit[version] )
2791 {
2792 // we've already got this one
2793 return true;
2794 }
2795
2796 static const wxChar *dllnames[] =
2797 {
2798 _T("riched32"),
2799 _T("riched20"),
2800 _T("msftedit"),
2801 };
2802
2803 wxCOMPILE_TIME_ASSERT( WXSIZEOF(dllnames) == Version_Max,
2804 RichEditDllNamesVersionsMismatch );
2805
2806 ms_hRichEdit[version] = ::LoadLibrary(dllnames[version]);
2807
2808 if ( !ms_hRichEdit[version] )
2809 {
2810 ms_hRichEdit[version] = INVALID_HINSTANCE;
2811
2812 return false;
2813 }
2814
2815 return true;
2816 }
2817
2818 #if wxUSE_INKEDIT
2819 // load the InkEdit library
2820 bool wxRichEditModule::LoadInkEdit()
2821 {
2822 static wxDynamicLibrary ms_inkEditLib;
2823 static bool ms_inkEditLibLoadAttemped;
2824 if (ms_inkEditLibLoadAttemped)
2825 ms_inkEditLib.IsLoaded();
2826
2827 ms_inkEditLibLoadAttemped = true;
2828
2829 wxLogNull logNull;
2830 return ms_inkEditLib.Load(wxT("inked"));
2831 }
2832 #endif
2833
2834
2835 #endif // wxUSE_RICHEDIT
2836
2837 #endif // wxUSE_TEXTCTRL && !(__SMARTPHONE__ && __WXWINCE__)
wxWidgets (Impactor)