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