]> git.saurik.com Git - wxWidgets.git/blob - src/msw/textctrl.cpp
projects / wxWidgets.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
xti extensions
[wxWidgets.git] / src / msw / textctrl.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: 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 #ifdef __GNUG__
17 #pragma implementation "textctrl.h"
18 #endif
19
20 // ----------------------------------------------------------------------------
21 // headers
22 // ----------------------------------------------------------------------------
23
24 // For compilers that support precompilation, includes "wx.h".
25 #include "wx/wxprec.h"
26
27 #ifdef __BORLANDC__
28 #pragma hdrstop
29 #endif
30
31 #if wxUSE_TEXTCTRL
32
33 #ifndef WX_PRECOMP
34 #include "wx/textctrl.h"
35 #include "wx/settings.h"
36 #include "wx/brush.h"
37 #include "wx/utils.h"
38 #include "wx/intl.h"
39 #include "wx/log.h"
40 #include "wx/app.h"
41 #include "wx/menu.h"
42 #endif
43
44 #include "wx/module.h"
45
46 #if wxUSE_CLIPBOARD
47 #include "wx/clipbrd.h"
48 #endif
49
50 #include "wx/textfile.h"
51
52 #include <windowsx.h>
53
54 #include "wx/msw/private.h"
55 #include "wx/msw/winundef.h"
56
57 #include <string.h>
58 #include <stdlib.h>
59
60 #ifndef __WXWINCE__
61 #include <sys/types.h>
62 #endif
63
64 #if wxUSE_RICHEDIT
65
66 // old mingw32 has richedit stuff directly in windows.h and doesn't have
67 // richedit.h at all
68 #if !defined(__GNUWIN32_OLD__) || defined(__CYGWIN10__)
69 #include <richedit.h>
70 #endif
71
72 #include "wx/msw/missing.h"
73
74 #endif // wxUSE_RICHEDIT
75
76 // ----------------------------------------------------------------------------
77 // private functions
78 // ----------------------------------------------------------------------------
79
80 #if wxUSE_RICHEDIT
81
82 DWORD CALLBACK wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb);
83
84 #endif // wxUSE_RICHEDIT
85
86 // ----------------------------------------------------------------------------
87 // private classes
88 // ----------------------------------------------------------------------------
89
90 #if wxUSE_RICHEDIT
91
92 // this module initializes RichEdit DLL(s) if needed
93 class wxRichEditModule : public wxModule
94 {
95 public:
96 virtual bool OnInit();
97 virtual void OnExit();
98
99 // load the richedit DLL of at least of required version
100 static bool Load(int version = 1);
101
102 private:
103 // the handles to richedit 1.0 and 2.0 (or 3.0) DLLs
104 static HINSTANCE ms_hRichEdit[2];
105
106 DECLARE_DYNAMIC_CLASS(wxRichEditModule)
107 };
108
109 HINSTANCE wxRichEditModule::ms_hRichEdit[2] = { NULL, NULL };
110
111 IMPLEMENT_DYNAMIC_CLASS(wxRichEditModule, wxModule)
112
113 #endif // wxUSE_RICHEDIT
114
115 // ----------------------------------------------------------------------------
116 // event tables and other macros
117 // ----------------------------------------------------------------------------
118
119 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxControl)
120 /*
121 TODO PROPERTIES :
122 value
123 */
124
125 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
126 EVT_CHAR(wxTextCtrl::OnChar)
127 EVT_DROP_FILES(wxTextCtrl::OnDropFiles)
128
129 #if wxUSE_RICHEDIT
130 EVT_RIGHT_UP(wxTextCtrl::OnRightClick)
131 #endif
132
133 EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
134 EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
135 EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
136 EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
137 EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
138 EVT_MENU(wxID_CLEAR, wxTextCtrl::OnDelete)
139 EVT_MENU(wxID_SELECTALL, wxTextCtrl::OnSelectAll)
140
141 EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
142 EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
143 EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
144 EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
145 EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
146 EVT_UPDATE_UI(wxID_CLEAR, wxTextCtrl::OnUpdateDelete)
147 EVT_UPDATE_UI(wxID_SELECTALL, wxTextCtrl::OnUpdateSelectAll)
148 #ifdef __WIN16__
149 EVT_ERASE_BACKGROUND(wxTextCtrl::OnEraseBackground)
150 #endif
151
152 EVT_SET_FOCUS(wxTextCtrl::OnSetFocus)
153 END_EVENT_TABLE()
154
155 // ============================================================================
156 // implementation
157 // ============================================================================
158
159 // ----------------------------------------------------------------------------
160 // creation
161 // ----------------------------------------------------------------------------
162
163 void wxTextCtrl::Init()
164 {
165 #if wxUSE_RICHEDIT
166 m_verRichEdit = 0;
167 #endif // wxUSE_RICHEDIT
168
169 m_privateContextMenu = NULL;
170 m_suppressNextUpdate = FALSE;
171 m_isNativeCaretShown = true;
172 }
173
174 wxTextCtrl::~wxTextCtrl()
175 {
176 if (m_privateContextMenu)
177 {
178 delete m_privateContextMenu;
179 m_privateContextMenu = NULL;
180 }
181 }
182
183 bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id,
184 const wxString& value,
185 const wxPoint& pos,
186 const wxSize& size,
187 long style,
188 const wxValidator& validator,
189 const wxString& name)
190 {
191 // base initialization
192 if ( !CreateBase(parent, id, pos, size, style, validator, name) )
193 return FALSE;
194
195 if ( parent )
196 parent->AddChild(this);
197
198 // translate wxWin style flags to MSW ones
199 WXDWORD msStyle = MSWGetCreateWindowFlags();
200
201 // do create the control - either an EDIT or RICHEDIT
202 wxString windowClass = wxT("EDIT");
203
204 #if wxUSE_RICHEDIT
205 if ( m_windowStyle & wxTE_AUTO_URL )
206 {
207 // automatic URL detection only works in RichEdit 2.0+
208 m_windowStyle |= wxTE_RICH2;
209 }
210
211 if ( m_windowStyle & wxTE_RICH2 )
212 {
213 // using richedit 2.0 implies using wxTE_RICH
214 m_windowStyle |= wxTE_RICH;
215 }
216
217 // we need to load the richedit DLL before creating the rich edit control
218 if ( m_windowStyle & wxTE_RICH )
219 {
220 static bool s_errorGiven = FALSE;// MT-FIXME
221
222 // Which version do we need? Use 1.0 by default because it is much more
223 // like the the standard EDIT or 2.0 if explicitly requested, but use
224 // only 2.0 in Unicode mode as 1.0 doesn't support Unicode at all
225 //
226 // TODO: RichEdit 3.0 is apparently capable of emulating RichEdit 1.0
227 // (and thus EDIT) much better than RichEdit 2.0 so we probably
228 // should use 3.0 if available as it is the best of both worlds -
229 // but as I can't test it right now I don't do it (VZ)
230 #if wxUSE_UNICODE
231 const int verRichEdit = 2;
232 #else // !wxUSE_UNICODE
233 int verRichEdit = m_windowStyle & wxTE_RICH2 ? 2 : 1;
234 #endif // wxUSE_UNICODE/!wxUSE_UNICODE
235
236 // only give the error msg once if the DLL can't be loaded
237 if ( !s_errorGiven )
238 {
239 // try to load the RichEdit DLL (will do nothing if already done)
240 if ( !wxRichEditModule::Load(verRichEdit) )
241 {
242 #if !wxUSE_UNICODE
243 // try another version?
244 verRichEdit = 3 - verRichEdit; // 1 <-> 2
245
246 if ( !wxRichEditModule::Load(verRichEdit) )
247 #endif // wxUSE_UNICODE
248 {
249 wxLogError(_("Impossible to create a rich edit control, using simple text control instead. Please reinstall riched32.dll"));
250
251 s_errorGiven = TRUE;
252 }
253 }
254 }
255
256 // have we managed to load any richedit version?
257 if ( !s_errorGiven )
258 {
259 m_verRichEdit = verRichEdit;
260 if ( m_verRichEdit == 1 )
261 {
262 windowClass = wxT("RICHEDIT");
263 }
264 else
265 {
266 #ifndef RICHEDIT_CLASS
267 wxString RICHEDIT_CLASS;
268 RICHEDIT_CLASS.Printf(_T("RichEdit%d0"), m_verRichEdit);
269 #if wxUSE_UNICODE
270 RICHEDIT_CLASS += _T('W');
271 #else // ANSI
272 RICHEDIT_CLASS += _T('A');
273 #endif // Unicode/ANSI
274 #endif // !RICHEDIT_CLASS
275
276 windowClass = RICHEDIT_CLASS;
277 }
278 }
279 }
280 #endif // wxUSE_RICHEDIT
281
282 // we need to turn '\n's into "\r\n"s for the multiline controls
283 wxString valueWin;
284 if ( m_windowStyle & wxTE_MULTILINE )
285 {
286 valueWin = wxTextFile::Translate(value, wxTextFileType_Dos);
287 }
288 else // single line
289 {
290 valueWin = value;
291 }
292
293 if ( !MSWCreateControl(windowClass, msStyle, pos, size, valueWin) )
294 return FALSE;
295
296 SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
297
298 #if wxUSE_RICHEDIT
299 if ( IsRich() )
300 {
301 // enable the events we're interested in: we want to get EN_CHANGE as
302 // for the normal controls
303 LPARAM mask = ENM_CHANGE;
304
305 if ( GetRichVersion() == 1 )
306 {
307 // we also need EN_MSGFILTER for richedit 1.0 for the reasons
308 // explained in its handler
309 mask |= ENM_MOUSEEVENTS;
310 }
311 else if ( m_windowStyle & wxTE_AUTO_URL )
312 {
313 mask |= ENM_LINK;
314
315 ::SendMessage(GetHwnd(), EM_AUTOURLDETECT, TRUE, 0);
316 }
317
318 ::SendMessage(GetHwnd(), EM_SETEVENTMASK, 0, mask);
319 }
320 #endif // wxUSE_RICHEDIT
321
322 return TRUE;
323 }
324
325 // Make sure the window style (etc.) reflects the HWND style (roughly)
326 void wxTextCtrl::AdoptAttributesFromHWND()
327 {
328 wxWindow::AdoptAttributesFromHWND();
329
330 HWND hWnd = GetHwnd();
331 long style = ::GetWindowLong(hWnd, GWL_STYLE);
332
333 // retrieve the style to see whether this is an edit or richedit ctrl
334 #if wxUSE_RICHEDIT
335 wxString classname = wxGetWindowClass(GetHWND());
336
337 if ( classname.IsSameAs(_T("EDIT"), FALSE /* no case */) )
338 {
339 m_verRichEdit = 0;
340 }
341 else // rich edit?
342 {
343 wxChar c;
344 if ( wxSscanf(classname, _T("RichEdit%d0%c"), &m_verRichEdit, &c) != 2 )
345 {
346 wxLogDebug(_T("Unknown edit control '%s'."), classname.c_str());
347
348 m_verRichEdit = 0;
349 }
350 }
351 #endif // wxUSE_RICHEDIT
352
353 if (style & ES_MULTILINE)
354 m_windowStyle |= wxTE_MULTILINE;
355 if (style & ES_PASSWORD)
356 m_windowStyle |= wxTE_PASSWORD;
357 if (style & ES_READONLY)
358 m_windowStyle |= wxTE_READONLY;
359 if (style & ES_WANTRETURN)
360 m_windowStyle |= wxTE_PROCESS_ENTER;
361 if (style & ES_CENTER)
362 m_windowStyle |= wxTE_CENTRE;
363 if (style & ES_RIGHT)
364 m_windowStyle |= wxTE_RIGHT;
365 }
366
367 WXDWORD wxTextCtrl::MSWGetStyle(long style, WXDWORD *exstyle) const
368 {
369 long msStyle = wxControl::MSWGetStyle(style, exstyle);
370
371 // styles which we alaways add by default
372 if ( style & wxTE_MULTILINE )
373 {
374 wxASSERT_MSG( !(style & wxTE_PROCESS_ENTER),
375 wxT("wxTE_PROCESS_ENTER style is ignored for multiline text controls (they always process it)") );
376
377 msStyle |= ES_MULTILINE | ES_WANTRETURN;
378 if ( !(style & wxTE_NO_VSCROLL) )
379 {
380 // always adjust the vertical scrollbar automatically if we have it
381 msStyle |= WS_VSCROLL | ES_AUTOVSCROLL;
382
383 #if wxUSE_RICHEDIT
384 // we have to use this style for the rich edit controls because
385 // without it the vertical scrollbar never appears at all in
386 // richedit 3.0 because of our ECO_NOHIDESEL hack (search for it)
387 if ( style & wxTE_RICH2 )
388 {
389 msStyle |= ES_DISABLENOSCROLL;
390 }
391 #endif // wxUSE_RICHEDIT
392 }
393
394 style |= wxTE_PROCESS_ENTER;
395 }
396 else // !multiline
397 {
398 // there is really no reason to not have this style for single line
399 // text controls
400 msStyle |= ES_AUTOHSCROLL;
401 }
402
403 // styles which we add depending on the specified wxWindows styles
404 if ( style & wxHSCROLL )
405 {
406 // automatically scroll the control horizontally as necessary
407 msStyle |= WS_HSCROLL;// | ES_AUTOHSCROLL;
408 }
409
410 if ( style & wxTE_READONLY )
411 msStyle |= ES_READONLY;
412
413 if ( style & wxTE_PASSWORD )
414 msStyle |= ES_PASSWORD;
415
416 if ( style & wxTE_NOHIDESEL )
417 msStyle |= ES_NOHIDESEL;
418
419 // note that we can't do do "& wxTE_LEFT" as wxTE_LEFT == 0
420 if ( style & wxTE_CENTRE )
421 msStyle |= ES_CENTER;
422 else if ( style & wxTE_RIGHT )
423 msStyle |= ES_RIGHT;
424 else
425 msStyle |= ES_LEFT; // ES_LEFT if 0 as well but for consistency...
426
427 return msStyle;
428 }
429
430 void wxTextCtrl::SetWindowStyleFlag(long style)
431 {
432 #if wxUSE_RICHEDIT
433 // we have to deal with some styles separately because they can't be
434 // changed by simply calling SetWindowLong(GWL_STYLE) but can be changed
435 // using richedit-specific EM_SETOPTIONS
436 if ( IsRich() &&
437 ((style & wxTE_NOHIDESEL) != (GetWindowStyle() & wxTE_NOHIDESEL)) )
438 {
439 bool set = (style & wxTE_NOHIDESEL) != 0;
440
441 ::SendMessage(GetHwnd(), EM_SETOPTIONS, set ? ECOOP_OR : ECOOP_AND,
442 set ? ECO_NOHIDESEL : ~ECO_NOHIDESEL);
443 }
444 #endif // wxUSE_RICHEDIT
445
446 wxControl::SetWindowStyleFlag(style);
447 }
448
449 // ----------------------------------------------------------------------------
450 // set/get the controls text
451 // ----------------------------------------------------------------------------
452
453 wxString wxTextCtrl::GetValue() const
454 {
455 // range 0..-1 is special for GetRange() and means to retrieve all text
456 return GetRange(0, -1);
457 }
458
459 wxString wxTextCtrl::GetRange(long from, long to) const
460 {
461 wxString str;
462
463 if ( from >= to && to != -1 )
464 {
465 // nothing to retrieve
466 return str;
467 }
468
469 #if wxUSE_RICHEDIT
470 if ( IsRich() )
471 {
472 int len = GetWindowTextLength(GetHwnd());
473 if ( len > from )
474 {
475 {
476 // alloc one extra WORD as needed by the control
477 wxStringBuffer tmp(str, ++len);
478 wxChar *p = tmp;
479
480 TEXTRANGE textRange;
481 textRange.chrg.cpMin = from;
482 textRange.chrg.cpMax = to == -1 ? len : to;
483 textRange.lpstrText = p;
484
485 (void)SendMessage(GetHwnd(), EM_GETTEXTRANGE,
486 0, (LPARAM)&textRange);
487
488 if ( m_verRichEdit > 1 )
489 {
490 // RichEdit 2.0 uses just CR ('\r') for the
491 // newlines which is neither Unix nor Windows
492 // style - convert it to something reasonable
493 for ( ; *p; p++ )
494 {
495 if ( *p == _T('\r') )
496 *p = _T('\n');
497 }
498 }
499 }
500
501 if ( m_verRichEdit == 1 )
502 {
503 // convert to the canonical form - see comment below
504 str = wxTextFile::Translate(str, wxTextFileType_Unix);
505 }
506 }
507 //else: no text at all, leave the string empty
508 }
509 else
510 #endif // wxUSE_RICHEDIT
511 {
512 // retrieve all text
513 str = wxGetWindowText(GetHWND());
514
515 // need only a range?
516 if ( from < to )
517 {
518 str = str.Mid(from, to - from);
519 }
520
521 // WM_GETTEXT uses standard DOS CR+LF (\r\n) convention - convert to the
522 // canonical one (same one as above) for consistency with the other kinds
523 // of controls and, more importantly, with the other ports
524 str = wxTextFile::Translate(str, wxTextFileType_Unix);
525 }
526
527 return str;
528 }
529
530 void wxTextCtrl::SetValue(const wxString& value)
531 {
532 // if the text is long enough, it's faster to just set it instead of first
533 // comparing it with the old one (chances are that it will be different
534 // anyhow, this comparison is there to avoid flicker for small single-line
535 // edit controls mostly)
536 if ( (value.length() > 0x400) || (value != GetValue()) )
537 {
538 DoWriteText(value, FALSE /* not selection only */);
539 }
540 else // same text
541 {
542 // still send an event for consistency
543 SendUpdateEvent();
544 }
545
546 // we should reset the modified flag even if the value didn't really change
547
548 // mark the control as being not dirty - we changed its text, not the
549 // user
550 DiscardEdits();
551
552 // for compatibility, don't move the cursor when doing SetValue()
553 SetInsertionPoint(0);
554 }
555
556 #if wxUSE_RICHEDIT && (!wxUSE_UNICODE || wxUSE_UNICODE_MSLU)
557
558 DWORD CALLBACK wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb)
559 {
560 *pcb = 0;
561
562 wchar_t *wbuf = (wchar_t *)buf;
563 const wchar_t *wpc = *(const wchar_t **)dwCookie;
564 while ( cb && *wpc )
565 {
566 *wbuf++ = *wpc++;
567
568 cb -= sizeof(wchar_t);
569 (*pcb) += sizeof(wchar_t);
570 }
571
572 *(const wchar_t **)dwCookie = wpc;
573
574 return 0;
575 }
576
577 // from utils.cpp
578 extern WXDLLIMPEXP_BASE long wxEncodingToCodepage(wxFontEncoding encoding);
579
580 #if wxUSE_UNICODE_MSLU
581 bool wxTextCtrl::StreamIn(const wxString& value,
582 wxFontEncoding WXUNUSED(encoding),
583 bool selectionOnly)
584 {
585 const wchar_t *wpc = value.c_str();
586 #else // !wxUSE_UNICODE_MSLU
587 bool wxTextCtrl::StreamIn(const wxString& value,
588 wxFontEncoding encoding,
589 bool selectionOnly)
590 {
591 // we have to use EM_STREAMIN to force richedit control 2.0+ to show any
592 // text in the non default charset -- otherwise it thinks it knows better
593 // than we do and always shows it in the default one
594
595 // first get the Windows code page for this encoding
596 long codepage = wxEncodingToCodepage(encoding);
597 if ( codepage == -1 )
598 {
599 // unknown encoding
600 return FALSE;
601 }
602
603 // next translate to Unicode using this code page
604 int len = ::MultiByteToWideChar(codepage, 0, value, -1, NULL, 0);
605
606 #if wxUSE_WCHAR_T
607 wxWCharBuffer wchBuf(len);
608 #else
609 wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
610 #endif
611
612 if ( !::MultiByteToWideChar(codepage, 0, value, -1,
613 (wchar_t *)(const wchar_t *)wchBuf, len) )
614 {
615 wxLogLastError(_T("MultiByteToWideChar"));
616 }
617
618 // finally, stream it in the control
619 const wchar_t *wpc = wchBuf;
620 #endif // wxUSE_UNICODE_MSLU
621
622 EDITSTREAM eds;
623 wxZeroMemory(eds);
624 eds.dwCookie = (DWORD)&wpc;
625 // the cast below is needed for broken (very) old mingw32 headers
626 eds.pfnCallback = (EDITSTREAMCALLBACK)wxRichEditStreamIn;
627
628 // we're going to receive 2 EN_CHANGE notifications if we got any selection
629 // (same problem as in DoWriteText())
630 if ( selectionOnly && HasSelection() )
631 {
632 // so suppress one of them
633 m_suppressNextUpdate = TRUE;
634 }
635
636 ::SendMessage(GetHwnd(), EM_STREAMIN,
637 SF_TEXT |
638 SF_UNICODE |
639 (selectionOnly ? SFF_SELECTION : 0),
640 (LPARAM)&eds);
641
642 if ( eds.dwError )
643 {
644 wxLogLastError(_T("EM_STREAMIN"));
645 }
646
647 #if !wxUSE_WCHAR_T
648 free(wchBuf);
649 #endif // !wxUSE_WCHAR_T
650
651 return TRUE;
652 }
653
654 #endif // wxUSE_RICHEDIT
655
656 void wxTextCtrl::WriteText(const wxString& value)
657 {
658 DoWriteText(value);
659 }
660
661 void wxTextCtrl::DoWriteText(const wxString& value, bool selectionOnly)
662 {
663 wxString valueDos;
664 if ( m_windowStyle & wxTE_MULTILINE )
665 valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
666 else
667 valueDos = value;
668
669 #if wxUSE_RICHEDIT
670 // there are several complications with the rich edit controls here
671 bool done = FALSE;
672 if ( IsRich() )
673 {
674 // first, ensure that the new text will be in the default style
675 if ( !m_defaultStyle.IsDefault() )
676 {
677 long start, end;
678 GetSelection(&start, &end);
679 SetStyle(start, end, m_defaultStyle);
680 }
681
682 #if wxUSE_UNICODE_MSLU
683 // RichEdit doesn't have Unicode version of EM_REPLACESEL on Win9x,
684 // but EM_STREAMIN works
685 if ( wxUsingUnicowsDll() && GetRichVersion() > 1 )
686 {
687 done = StreamIn(valueDos, wxFONTENCODING_SYSTEM, selectionOnly);
688 }
689 #endif // wxUSE_UNICODE_MSLU
690
691 #if !wxUSE_UNICODE
692 // next check if the text we're inserting must be shown in a non
693 // default charset -- this only works for RichEdit > 1.0
694 if ( GetRichVersion() > 1 )
695 {
696 wxFont font = m_defaultStyle.GetFont();
697 if ( !font.Ok() )
698 font = GetFont();
699
700 if ( font.Ok() )
701 {
702 wxFontEncoding encoding = font.GetEncoding();
703 if ( encoding != wxFONTENCODING_SYSTEM )
704 {
705 done = StreamIn(valueDos, encoding, selectionOnly);
706 }
707 }
708 }
709 #endif // !wxUSE_UNICODE
710 }
711
712 if ( !done )
713 #endif // wxUSE_RICHEDIT
714 {
715 // in some cases we get 2 EN_CHANGE notifications after the SendMessage
716 // call below which is confusing for the client code and so should be
717 // avoided
718 //
719 // these cases are: (a) plain EDIT controls if EM_REPLACESEL is used
720 // and there is a non empty selection currently and (b) rich text
721 // controls in any case
722 if (
723 #if wxUSE_RICHEDIT
724 IsRich() ||
725 #endif // wxUSE_RICHEDIT
726 (selectionOnly && HasSelection()) )
727 {
728 m_suppressNextUpdate = TRUE;
729 }
730
731 ::SendMessage(GetHwnd(), selectionOnly ? EM_REPLACESEL : WM_SETTEXT,
732 0, (LPARAM)valueDos.c_str());
733
734 // OTOH, non rich text controls don't generate any events at all when
735 // we use WM_SETTEXT -- have to emulate them here
736 if ( !selectionOnly
737 #if wxUSE_RICHEDIT
738 && !IsRich()
739 #endif // wxUSE_RICHEDIT
740 )
741 {
742 // Windows already sends an update event for single-line
743 // controls.
744 if ( m_windowStyle & wxTE_MULTILINE )
745 SendUpdateEvent();
746 }
747 }
748
749 AdjustSpaceLimit();
750 }
751
752 void wxTextCtrl::AppendText(const wxString& text)
753 {
754 SetInsertionPointEnd();
755
756 WriteText(text);
757
758 #if wxUSE_RICHEDIT
759 if ( IsMultiLine() && GetRichVersion() > 1 )
760 {
761 // setting the caret to the end and showing it simply doesn't work for
762 // RichEdit 2.0 -- force it to still do what we want
763 ::SendMessage(GetHwnd(), EM_LINESCROLL, 0, GetNumberOfLines());
764 }
765 #endif // wxUSE_RICHEDIT
766 }
767
768 void wxTextCtrl::Clear()
769 {
770 ::SetWindowText(GetHwnd(), wxEmptyString);
771
772 #if wxUSE_RICHEDIT
773 if ( !IsRich() )
774 #endif // wxUSE_RICHEDIT
775 {
776 // rich edit controls send EN_UPDATE from WM_SETTEXT handler themselves
777 // but the normal ones don't -- make Clear() behaviour consistent by
778 // always sending this event
779
780 // Windows already sends an update event for single-line
781 // controls.
782 if ( m_windowStyle & wxTE_MULTILINE )
783 SendUpdateEvent();
784 }
785 }
786
787 #ifdef __WIN32__
788
789 bool wxTextCtrl::EmulateKeyPress(const wxKeyEvent& event)
790 {
791 SetFocus();
792
793 size_t lenOld = GetValue().length();
794
795 wxUint32 code = event.GetRawKeyCode();
796 ::keybd_event(code, 0, 0 /* key press */, 0);
797 ::keybd_event(code, 0, KEYEVENTF_KEYUP, 0);
798
799 // assume that any alphanumeric key changes the total number of characters
800 // in the control - this should work in 99% of cases
801 return GetValue().length() != lenOld;
802 }
803
804 #endif // __WIN32__
805
806 // ----------------------------------------------------------------------------
807 // Clipboard operations
808 // ----------------------------------------------------------------------------
809
810 void wxTextCtrl::Copy()
811 {
812 if (CanCopy())
813 {
814 ::SendMessage(GetHwnd(), WM_COPY, 0, 0L);
815 }
816 }
817
818 void wxTextCtrl::Cut()
819 {
820 if (CanCut())
821 {
822 ::SendMessage(GetHwnd(), WM_CUT, 0, 0L);
823 }
824 }
825
826 void wxTextCtrl::Paste()
827 {
828 if (CanPaste())
829 {
830 ::SendMessage(GetHwnd(), WM_PASTE, 0, 0L);
831 }
832 }
833
834 bool wxTextCtrl::HasSelection() const
835 {
836 long from, to;
837 GetSelection(&from, &to);
838 return from != to;
839 }
840
841 bool wxTextCtrl::CanCopy() const
842 {
843 // Can copy if there's a selection
844 return HasSelection();
845 }
846
847 bool wxTextCtrl::CanCut() const
848 {
849 return CanCopy() && IsEditable();
850 }
851
852 bool wxTextCtrl::CanPaste() const
853 {
854 if ( !IsEditable() )
855 return FALSE;
856
857 #if wxUSE_RICHEDIT
858 if ( IsRich() )
859 {
860 UINT cf = 0; // 0 == any format
861
862 return ::SendMessage(GetHwnd(), EM_CANPASTE, cf, 0) != 0;
863 }
864 #endif // wxUSE_RICHEDIT
865
866 // Standard edit control: check for straight text on clipboard
867 if ( !::OpenClipboard(GetHwndOf(wxTheApp->GetTopWindow())) )
868 return FALSE;
869
870 bool isTextAvailable = ::IsClipboardFormatAvailable(CF_TEXT) != 0;
871 ::CloseClipboard();
872
873 return isTextAvailable;
874 }
875
876 // ----------------------------------------------------------------------------
877 // Accessors
878 // ----------------------------------------------------------------------------
879
880 void wxTextCtrl::SetEditable(bool editable)
881 {
882 HWND hWnd = GetHwnd();
883 SendMessage(hWnd, EM_SETREADONLY, (WPARAM)!editable, (LPARAM)0L);
884 }
885
886 void wxTextCtrl::SetInsertionPoint(long pos)
887 {
888 DoSetSelection(pos, pos);
889 }
890
891 void wxTextCtrl::SetInsertionPointEnd()
892 {
893 // we must not do anything if the caret is already there because calling
894 // SetInsertionPoint() thaws the controls if Freeze() had been called even
895 // if it doesn't actually move the caret anywhere and so the simple fact of
896 // doing it results in horrible flicker when appending big amounts of text
897 // to the control in a few chunks (see DoAddText() test in the text sample)
898 if ( GetInsertionPoint() == GetLastPosition() )
899 return;
900
901 long pos;
902
903 #if wxUSE_RICHEDIT
904 if ( m_verRichEdit == 1 )
905 {
906 // we don't have to waste time calling GetLastPosition() in this case
907 pos = -1;
908 }
909 else // !RichEdit 1.0
910 #endif // wxUSE_RICHEDIT
911 {
912 pos = GetLastPosition();
913 }
914
915 SetInsertionPoint(pos);
916 }
917
918 long wxTextCtrl::GetInsertionPoint() const
919 {
920 #if wxUSE_RICHEDIT
921 if ( IsRich() )
922 {
923 CHARRANGE range;
924 range.cpMin = 0;
925 range.cpMax = 0;
926 SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
927 return range.cpMin;
928 }
929 #endif // wxUSE_RICHEDIT
930
931 DWORD Pos = (DWORD)SendMessage(GetHwnd(), EM_GETSEL, 0, 0L);
932 return Pos & 0xFFFF;
933 }
934
935 long wxTextCtrl::GetLastPosition() const
936 {
937 int numLines = GetNumberOfLines();
938 long posStartLastLine = XYToPosition(0, numLines - 1);
939
940 long lenLastLine = GetLengthOfLineContainingPos(posStartLastLine);
941
942 return posStartLastLine + lenLastLine;
943 }
944
945 // If the return values from and to are the same, there is no
946 // selection.
947 void wxTextCtrl::GetSelection(long* from, long* to) const
948 {
949 #if wxUSE_RICHEDIT
950 if ( IsRich() )
951 {
952 CHARRANGE charRange;
953 ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &charRange);
954
955 *from = charRange.cpMin;
956 *to = charRange.cpMax;
957 }
958 else
959 #endif // !wxUSE_RICHEDIT
960 {
961 DWORD dwStart, dwEnd;
962 ::SendMessage(GetHwnd(), EM_GETSEL, (WPARAM)&dwStart, (LPARAM)&dwEnd);
963
964 *from = dwStart;
965 *to = dwEnd;
966 }
967 }
968
969 bool wxTextCtrl::IsEditable() const
970 {
971 // strangely enough, we may be called before the control is created: our
972 // own Create() calls MSWGetStyle() which calls AcceptsFocus() which calls
973 // us
974 if ( !m_hWnd )
975 return TRUE;
976
977 long style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
978
979 return (style & ES_READONLY) == 0;
980 }
981
982 // ----------------------------------------------------------------------------
983 // selection
984 // ----------------------------------------------------------------------------
985
986 void wxTextCtrl::SetSelection(long from, long to)
987 {
988 // if from and to are both -1, it means (in wxWindows) that all text should
989 // be selected - translate into Windows convention
990 if ( (from == -1) && (to == -1) )
991 {
992 from = 0;
993 to = -1;
994 }
995
996 DoSetSelection(from, to);
997 }
998
999 void wxTextCtrl::DoSetSelection(long from, long to, bool scrollCaret)
1000 {
1001 HWND hWnd = GetHwnd();
1002
1003 #ifdef __WIN32__
1004 #if wxUSE_RICHEDIT
1005 if ( IsRich() )
1006 {
1007 CHARRANGE range;
1008 range.cpMin = from;
1009 range.cpMax = to;
1010 SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM) &range);
1011 }
1012 else
1013 #endif // wxUSE_RICHEDIT
1014 {
1015 SendMessage(hWnd, EM_SETSEL, (WPARAM)from, (LPARAM)to);
1016 }
1017
1018 if ( scrollCaret )
1019 {
1020 #if wxUSE_RICHEDIT
1021 // richedit 3.0 (i.e. the version living in riched20.dll distributed
1022 // with Windows 2000 and beyond) doesn't honour EM_SCROLLCARET when
1023 // emulating richedit 2.0 unless the control has focus or ECO_NOHIDESEL
1024 // option is set (but it does work ok in richedit 1.0 mode...)
1025 //
1026 // so to make it work we either need to give focus to it here which
1027 // will probably create many problems (dummy focus events; window
1028 // containing the text control being brought to foreground
1029 // unexpectedly; ...) or to temporarily set ECO_NOHIDESEL which may
1030 // create other problems too -- and in fact it does because if we turn
1031 // on/off this style while appending the text to the control, the
1032 // vertical scrollbar never appears in it even if we append tons of
1033 // text and to work around this the only solution I found was to use
1034 // ES_DISABLENOSCROLL
1035 //
1036 // this is very ugly but I don't see any other way to make this work
1037 if ( GetRichVersion() > 1 )
1038 {
1039 if ( !HasFlag(wxTE_NOHIDESEL) )
1040 {
1041 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1042 ECOOP_OR, ECO_NOHIDESEL);
1043 }
1044 //else: everything is already ok
1045 }
1046 #endif // wxUSE_RICHEDIT
1047
1048 SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
1049
1050 #if wxUSE_RICHEDIT
1051 // restore ECO_NOHIDESEL if we changed it
1052 if ( GetRichVersion() > 1 && !HasFlag(wxTE_NOHIDESEL) )
1053 {
1054 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1055 ECOOP_AND, ~ECO_NOHIDESEL);
1056 }
1057 #endif // wxUSE_RICHEDIT
1058 }
1059 #else // Win16
1060 // WPARAM is 0: selection is scrolled into view
1061 SendMessage(hWnd, EM_SETSEL, (WPARAM)0, (LPARAM)MAKELONG(from, to));
1062 #endif // Win32/16
1063 }
1064
1065 // ----------------------------------------------------------------------------
1066 // Editing
1067 // ----------------------------------------------------------------------------
1068
1069 void wxTextCtrl::Replace(long from, long to, const wxString& value)
1070 {
1071 // Set selection and remove it
1072 DoSetSelection(from, to, FALSE /* don't scroll caret into view */);
1073
1074 SendMessage(GetHwnd(), EM_REPLACESEL,
1075 #ifdef __WIN32__
1076 TRUE,
1077 #else
1078 FALSE,
1079 #endif
1080 (LPARAM)value.c_str());
1081 }
1082
1083 void wxTextCtrl::Remove(long from, long to)
1084 {
1085 Replace(from, to, wxEmptyString);
1086 }
1087
1088 bool wxTextCtrl::LoadFile(const wxString& file)
1089 {
1090 if ( wxTextCtrlBase::LoadFile(file) )
1091 {
1092 // update the size limit if needed
1093 AdjustSpaceLimit();
1094
1095 return TRUE;
1096 }
1097
1098 return FALSE;
1099 }
1100
1101 bool wxTextCtrl::IsModified() const
1102 {
1103 return SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0;
1104 }
1105
1106 // Makes 'unmodified'
1107 void wxTextCtrl::DiscardEdits()
1108 {
1109 SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0L);
1110 }
1111
1112 int wxTextCtrl::GetNumberOfLines() const
1113 {
1114 return (int)SendMessage(GetHwnd(), EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0);
1115 }
1116
1117 long wxTextCtrl::XYToPosition(long x, long y) const
1118 {
1119 // This gets the char index for the _beginning_ of this line
1120 long charIndex = SendMessage(GetHwnd(), EM_LINEINDEX, (WPARAM)y, (LPARAM)0);
1121
1122 return charIndex + x;
1123 }
1124
1125 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
1126 {
1127 HWND hWnd = GetHwnd();
1128
1129 // This gets the line number containing the character
1130 long lineNo;
1131 #if wxUSE_RICHEDIT
1132 if ( IsRich() )
1133 {
1134 lineNo = SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, (LPARAM)pos);
1135 }
1136 else
1137 #endif // wxUSE_RICHEDIT
1138 {
1139 lineNo = SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, 0);
1140 }
1141
1142 if ( lineNo == -1 )
1143 {
1144 // no such line
1145 return FALSE;
1146 }
1147
1148 // This gets the char index for the _beginning_ of this line
1149 long charIndex = SendMessage(hWnd, EM_LINEINDEX, (WPARAM)lineNo, (LPARAM)0);
1150 if ( charIndex == -1 )
1151 {
1152 return FALSE;
1153 }
1154
1155 // The X position must therefore be the different between pos and charIndex
1156 if ( x )
1157 *x = pos - charIndex;
1158 if ( y )
1159 *y = lineNo;
1160
1161 return TRUE;
1162 }
1163
1164 void wxTextCtrl::ShowPosition(long pos)
1165 {
1166 HWND hWnd = GetHwnd();
1167
1168 // To scroll to a position, we pass the number of lines and characters
1169 // to scroll *by*. This means that we need to:
1170 // (1) Find the line position of the current line.
1171 // (2) Find the line position of pos.
1172 // (3) Scroll by (pos - current).
1173 // For now, ignore the horizontal scrolling.
1174
1175 // Is this where scrolling is relative to - the line containing the caret?
1176 // Or is the first visible line??? Try first visible line.
1177 // int currentLineLineNo1 = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)-1, (LPARAM)0L);
1178
1179 int currentLineLineNo = (int)SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, (WPARAM)0, (LPARAM)0L);
1180
1181 int specifiedLineLineNo = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, (LPARAM)0L);
1182
1183 int linesToScroll = specifiedLineLineNo - currentLineLineNo;
1184
1185 if (linesToScroll != 0)
1186 (void)SendMessage(hWnd, EM_LINESCROLL, (WPARAM)0, (LPARAM)linesToScroll);
1187 }
1188
1189 long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const
1190 {
1191 return ::SendMessage(GetHwnd(), EM_LINELENGTH, (WPARAM)pos, 0);
1192 }
1193
1194 int wxTextCtrl::GetLineLength(long lineNo) const
1195 {
1196 long pos = XYToPosition(0, lineNo);
1197
1198 return GetLengthOfLineContainingPos(pos);
1199 }
1200
1201 wxString wxTextCtrl::GetLineText(long lineNo) const
1202 {
1203 size_t len = (size_t)GetLineLength(lineNo) + 1;
1204
1205 // there must be at least enough place for the length WORD in the
1206 // buffer
1207 len += sizeof(WORD);
1208
1209 wxString str;
1210 {
1211 wxStringBufferLength tmp(str, len);
1212 wxChar *buf = tmp;
1213
1214 *(WORD *)buf = (WORD)len;
1215 len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE,
1216 lineNo, (LPARAM)buf);
1217 buf[len] = 0;
1218 tmp.SetLength(len);
1219 }
1220
1221 return str;
1222 }
1223
1224 void wxTextCtrl::SetMaxLength(unsigned long len)
1225 {
1226 ::SendMessage(GetHwnd(), EM_LIMITTEXT, len, 0);
1227 }
1228
1229 // ----------------------------------------------------------------------------
1230 // Undo/redo
1231 // ----------------------------------------------------------------------------
1232
1233 void wxTextCtrl::Undo()
1234 {
1235 if (CanUndo())
1236 {
1237 ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1238 }
1239 }
1240
1241 void wxTextCtrl::Redo()
1242 {
1243 if (CanRedo())
1244 {
1245 // Same as Undo, since Undo undoes the undo, i.e. a redo.
1246 ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1247 }
1248 }
1249
1250 bool wxTextCtrl::CanUndo() const
1251 {
1252 return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1253 }
1254
1255 bool wxTextCtrl::CanRedo() const
1256 {
1257 return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1258 }
1259
1260 // ----------------------------------------------------------------------------
1261 // caret handling (Windows only)
1262 // ----------------------------------------------------------------------------
1263
1264 bool wxTextCtrl::ShowNativeCaret(bool show)
1265 {
1266 if ( show != m_isNativeCaretShown )
1267 {
1268 if ( !(show ? ::ShowCaret(GetHwnd()) : ::HideCaret(GetHwnd())) )
1269 {
1270 // not an error, may simply indicate that it's not shown/hidden
1271 // yet (i.e. it had been hidden/showh 2 times before)
1272 return false;
1273 }
1274
1275 m_isNativeCaretShown = show;
1276 }
1277
1278 return true;
1279 }
1280
1281 // ----------------------------------------------------------------------------
1282 // implemenation details
1283 // ----------------------------------------------------------------------------
1284
1285 void wxTextCtrl::Command(wxCommandEvent & event)
1286 {
1287 SetValue(event.GetString());
1288 ProcessCommand (event);
1289 }
1290
1291 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
1292 {
1293 // By default, load the first file into the text window.
1294 if (event.GetNumberOfFiles() > 0)
1295 {
1296 LoadFile(event.GetFiles()[0]);
1297 }
1298 }
1299
1300 // ----------------------------------------------------------------------------
1301 // kbd input processing
1302 // ----------------------------------------------------------------------------
1303
1304 bool wxTextCtrl::MSWShouldPreProcessMessage(WXMSG* pMsg)
1305 {
1306 MSG *msg = (MSG *)pMsg;
1307
1308 // check for our special keys here: if we don't do it and the parent frame
1309 // uses them as accelerators, they wouldn't work at all, so we disable
1310 // usual preprocessing for them
1311 if ( msg->message == WM_KEYDOWN )
1312 {
1313 WORD vkey = (WORD) msg->wParam;
1314 if ( (HIWORD(msg->lParam) & KF_ALTDOWN) == KF_ALTDOWN )
1315 {
1316 if ( vkey == VK_BACK )
1317 return FALSE;
1318 }
1319 else // no Alt
1320 {
1321 // we want to process some Ctrl-foo and Shift-bar but no key
1322 // combinations without either Ctrl or Shift nor with both of them
1323 // pressed
1324 const int ctrl = wxIsCtrlDown(),
1325 shift = wxIsShiftDown();
1326 switch ( ctrl + shift )
1327 {
1328 default:
1329 wxFAIL_MSG( _T("how many modifiers have we got?") );
1330 // fall through
1331
1332 case 0:
1333 case 2:
1334 break;
1335
1336 case 1:
1337 // either Ctrl or Shift pressed
1338 if ( ctrl )
1339 {
1340 switch ( vkey )
1341 {
1342 case 'C':
1343 case 'V':
1344 case 'X':
1345 case VK_INSERT:
1346 case VK_DELETE:
1347 case VK_HOME:
1348 case VK_END:
1349 return FALSE;
1350 }
1351 }
1352 else // Shift is pressed
1353 {
1354 if ( vkey == VK_INSERT || vkey == VK_DELETE )
1355 return FALSE;
1356 }
1357 }
1358 }
1359 }
1360
1361 return wxControl::MSWShouldPreProcessMessage(pMsg);
1362 }
1363
1364 void wxTextCtrl::OnChar(wxKeyEvent& event)
1365 {
1366 switch ( event.GetKeyCode() )
1367 {
1368 case WXK_RETURN:
1369 if ( !(m_windowStyle & wxTE_MULTILINE) )
1370 {
1371 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1372 InitCommandEvent(event);
1373 event.SetString(GetValue());
1374 if ( GetEventHandler()->ProcessEvent(event) )
1375 return;
1376 }
1377 //else: multiline controls need Enter for themselves
1378
1379 break;
1380
1381 case WXK_TAB:
1382 // always produce navigation event - even if we process TAB
1383 // ourselves the fact that we got here means that the user code
1384 // decided to skip processing of this TAB - probably to let it
1385 // do its default job.
1386 {
1387 wxNavigationKeyEvent eventNav;
1388 eventNav.SetDirection(!event.ShiftDown());
1389 eventNav.SetWindowChange(event.ControlDown());
1390 eventNav.SetEventObject(this);
1391
1392 if ( GetParent()->GetEventHandler()->ProcessEvent(eventNav) )
1393 return;
1394 }
1395 break;
1396 }
1397
1398 // no, we didn't process it
1399 event.Skip();
1400 }
1401
1402 long wxTextCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
1403 {
1404 long lRc = wxTextCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
1405
1406 if ( nMsg == WM_GETDLGCODE )
1407 {
1408 // we always want the chars and the arrows: the arrows for navigation
1409 // and the chars because we want Ctrl-C to work even in a read only
1410 // control
1411 long lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
1412
1413 if ( IsEditable() )
1414 {
1415 // we may have several different cases:
1416 // 1. normal case: both TAB and ENTER are used for dlg navigation
1417 // 2. ctrl which wants TAB for itself: ENTER is used to pass to the
1418 // next control in the dialog
1419 // 3. ctrl which wants ENTER for itself: TAB is used for dialog
1420 // navigation
1421 // 4. ctrl which wants both TAB and ENTER: Ctrl-ENTER is used to go
1422 // to the next control
1423
1424 // the multiline edit control should always get <Return> for itself
1425 if ( HasFlag(wxTE_PROCESS_ENTER) || HasFlag(wxTE_MULTILINE) )
1426 lDlgCode |= DLGC_WANTMESSAGE;
1427
1428 if ( HasFlag(wxTE_PROCESS_TAB) )
1429 lDlgCode |= DLGC_WANTTAB;
1430
1431 lRc |= lDlgCode;
1432 }
1433 else // !editable
1434 {
1435 // NB: use "=", not "|=" as the base class version returns the
1436 // same flags is this state as usual (i.e. including
1437 // DLGC_WANTMESSAGE). This is strange (how does it work in the
1438 // native Win32 apps?) but for now live with it.
1439 lRc = lDlgCode;
1440 }
1441 }
1442
1443 return lRc;
1444 }
1445
1446 // ----------------------------------------------------------------------------
1447 // text control event processing
1448 // ----------------------------------------------------------------------------
1449
1450 bool wxTextCtrl::SendUpdateEvent()
1451 {
1452 // is event reporting suspended?
1453 if ( m_suppressNextUpdate )
1454 {
1455 // do process the next one
1456 m_suppressNextUpdate = FALSE;
1457
1458 return FALSE;
1459 }
1460
1461 wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, GetId());
1462 InitCommandEvent(event);
1463 event.SetString(GetValue());
1464
1465 return ProcessCommand(event);
1466 }
1467
1468 bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
1469 {
1470 switch ( param )
1471 {
1472 case EN_SETFOCUS:
1473 case EN_KILLFOCUS:
1474 {
1475 wxFocusEvent event(param == EN_KILLFOCUS ? wxEVT_KILL_FOCUS
1476 : wxEVT_SET_FOCUS,
1477 m_windowId);
1478 event.SetEventObject(this);
1479 GetEventHandler()->ProcessEvent(event);
1480 }
1481 break;
1482
1483 case EN_CHANGE:
1484 SendUpdateEvent();
1485 break;
1486
1487 case EN_MAXTEXT:
1488 // the text size limit has been hit -- try to increase it
1489 if ( !AdjustSpaceLimit() )
1490 {
1491 wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, m_windowId);
1492 InitCommandEvent(event);
1493 event.SetString(GetValue());
1494 ProcessCommand(event);
1495 }
1496 break;
1497
1498 // the other edit notification messages are not processed
1499 default:
1500 return FALSE;
1501 }
1502
1503 // processed
1504 return TRUE;
1505 }
1506
1507 WXHBRUSH wxTextCtrl::OnCtlColor(WXHDC pDC, WXHWND WXUNUSED(pWnd), WXUINT WXUNUSED(nCtlColor),
1508 #if wxUSE_CTL3D
1509 WXUINT message,
1510 WXWPARAM wParam,
1511 WXLPARAM lParam
1512 #else
1513 WXUINT WXUNUSED(message),
1514 WXWPARAM WXUNUSED(wParam),
1515 WXLPARAM WXUNUSED(lParam)
1516 #endif
1517 )
1518 {
1519 #if wxUSE_CTL3D
1520 if ( m_useCtl3D )
1521 {
1522 HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
1523 return (WXHBRUSH) hbrush;
1524 }
1525 #endif // wxUSE_CTL3D
1526
1527 HDC hdc = (HDC)pDC;
1528 wxColour colBack = GetBackgroundColour();
1529
1530 if (!IsEnabled() && (GetWindowStyle() & wxTE_MULTILINE) == 0)
1531 colBack = wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE);
1532
1533 ::SetBkColor(hdc, wxColourToRGB(colBack));
1534 ::SetTextColor(hdc, wxColourToRGB(GetForegroundColour()));
1535
1536 wxBrush *brush = wxTheBrushList->FindOrCreateBrush(colBack, wxSOLID);
1537
1538 return (WXHBRUSH)brush->GetResourceHandle();
1539 }
1540
1541 // In WIN16, need to override normal erasing because
1542 // Ctl3D doesn't use the wxWindows background colour.
1543 #ifdef __WIN16__
1544 void wxTextCtrl::OnEraseBackground(wxEraseEvent& event)
1545 {
1546 wxColour col(m_backgroundColour);
1547
1548 #if wxUSE_CTL3D
1549 if (m_useCtl3D)
1550 col = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
1551 #endif
1552
1553 RECT rect;
1554 ::GetClientRect(GetHwnd(), &rect);
1555
1556 COLORREF ref = wxColourToRGB(col);
1557 HBRUSH hBrush = ::CreateSolidBrush(ref);
1558 if ( !hBrush )
1559 wxLogLastError(wxT("CreateSolidBrush"));
1560
1561 HDC hdc = (HDC)event.GetDC()->GetHDC();
1562
1563 int mode = ::SetMapMode(hdc, MM_TEXT);
1564
1565 ::FillRect(hdc, &rect, hBrush);
1566 ::DeleteObject(hBrush);
1567 ::SetMapMode(hdc, mode);
1568
1569 }
1570 #endif // Win16
1571
1572 bool wxTextCtrl::AdjustSpaceLimit()
1573 {
1574 #ifndef __WIN16__
1575 unsigned int limit = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
1576
1577 // HACK: we try to automatically extend the limit for the amount of text
1578 // to allow (interactively) entering more than 64Kb of text under
1579 // Win9x but we shouldn't reset the text limit which was previously
1580 // set explicitly with SetMaxLength()
1581 //
1582 // we could solve this by storing the limit we set in wxTextCtrl but
1583 // to save space we prefer to simply test here the actual limit
1584 // value: we consider that SetMaxLength() can only be called for
1585 // values < 32Kb
1586 if ( limit < 0x8000 )
1587 {
1588 // we've got more text than limit set by SetMaxLength()
1589 return FALSE;
1590 }
1591
1592 unsigned int len = ::GetWindowTextLength(GetHwnd());
1593 if ( len >= limit )
1594 {
1595 limit = len + 0x8000; // 32Kb
1596
1597 #if wxUSE_RICHEDIT
1598 if ( IsRich() )
1599 {
1600 // as a nice side effect, this also allows passing limit > 64Kb
1601 ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, limit);
1602 }
1603 else
1604 #endif // wxUSE_RICHEDIT
1605 {
1606 if ( limit > 0xffff )
1607 {
1608 // this will set it to a platform-dependent maximum (much more
1609 // than 64Kb under NT)
1610 limit = 0;
1611 }
1612
1613 ::SendMessage(GetHwnd(), EM_LIMITTEXT, limit, 0);
1614 }
1615 }
1616 #endif // !Win16
1617
1618 // we changed the limit
1619 return TRUE;
1620 }
1621
1622 bool wxTextCtrl::AcceptsFocus() const
1623 {
1624 // we don't want focus if we can't be edited unless we're a multiline
1625 // control because then it might be still nice to get focus from keyboard
1626 // to be able to scroll it without mouse
1627 return (IsEditable() || IsMultiLine()) && wxControl::AcceptsFocus();
1628 }
1629
1630 wxSize wxTextCtrl::DoGetBestSize() const
1631 {
1632 int cx, cy;
1633 wxGetCharSize(GetHWND(), &cx, &cy, &GetFont());
1634
1635 int wText = DEFAULT_ITEM_WIDTH;
1636
1637 int hText = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy);
1638 if ( m_windowStyle & wxTE_MULTILINE )
1639 {
1640 hText *= wxMax(GetNumberOfLines(), 5);
1641 }
1642 //else: for single line control everything is ok
1643
1644 return wxSize(wText, hText);
1645 }
1646
1647 // ----------------------------------------------------------------------------
1648 // standard handlers for standard edit menu events
1649 // ----------------------------------------------------------------------------
1650
1651 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1652 {
1653 Cut();
1654 }
1655
1656 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1657 {
1658 Copy();
1659 }
1660
1661 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1662 {
1663 Paste();
1664 }
1665
1666 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1667 {
1668 Undo();
1669 }
1670
1671 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1672 {
1673 Redo();
1674 }
1675
1676 void wxTextCtrl::OnDelete(wxCommandEvent& WXUNUSED(event))
1677 {
1678 long from, to;
1679 GetSelection(& from, & to);
1680 if (from != -1 && to != -1)
1681 Remove(from, to);
1682 }
1683
1684 void wxTextCtrl::OnSelectAll(wxCommandEvent& WXUNUSED(event))
1685 {
1686 SetSelection(-1, -1);
1687 }
1688
1689 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1690 {
1691 event.Enable( CanCut() );
1692 }
1693
1694 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1695 {
1696 event.Enable( CanCopy() );
1697 }
1698
1699 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1700 {
1701 event.Enable( CanPaste() );
1702 }
1703
1704 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1705 {
1706 event.Enable( CanUndo() );
1707 }
1708
1709 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1710 {
1711 event.Enable( CanRedo() );
1712 }
1713
1714 void wxTextCtrl::OnUpdateDelete(wxUpdateUIEvent& event)
1715 {
1716 long from, to;
1717 GetSelection(& from, & to);
1718 event.Enable(from != -1 && to != -1 && from != to && IsEditable()) ;
1719 }
1720
1721 void wxTextCtrl::OnUpdateSelectAll(wxUpdateUIEvent& event)
1722 {
1723 event.Enable(GetLastPosition() > 0);
1724 }
1725
1726 void wxTextCtrl::OnRightClick(wxMouseEvent& event)
1727 {
1728 #if wxUSE_RICHEDIT
1729 if (IsRich())
1730 {
1731 if (!m_privateContextMenu)
1732 {
1733 m_privateContextMenu = new wxMenu;
1734 m_privateContextMenu->Append(wxID_UNDO, _("&Undo"));
1735 m_privateContextMenu->Append(wxID_REDO, _("&Redo"));
1736 m_privateContextMenu->AppendSeparator();
1737 m_privateContextMenu->Append(wxID_CUT, _("Cu&t"));
1738 m_privateContextMenu->Append(wxID_COPY, _("&Copy"));
1739 m_privateContextMenu->Append(wxID_PASTE, _("&Paste"));
1740 m_privateContextMenu->Append(wxID_CLEAR, _("&Delete"));
1741 m_privateContextMenu->AppendSeparator();
1742 m_privateContextMenu->Append(wxID_SELECTALL, _("Select &All"));
1743 }
1744 PopupMenu(m_privateContextMenu, event.GetPosition());
1745 return;
1746 }
1747 else
1748 #endif
1749 event.Skip();
1750 }
1751
1752 void wxTextCtrl::OnSetFocus(wxFocusEvent& WXUNUSED(event))
1753 {
1754 // be sure the caret remains invisible if the user had hidden it
1755 if ( !m_isNativeCaretShown )
1756 {
1757 ::HideCaret(GetHwnd());
1758 }
1759 }
1760
1761 // the rest of the file only deals with the rich edit controls
1762 #if wxUSE_RICHEDIT
1763
1764 // ----------------------------------------------------------------------------
1765 // EN_LINK processing
1766 // ----------------------------------------------------------------------------
1767
1768 bool wxTextCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
1769 {
1770 NMHDR *hdr = (NMHDR* )lParam;
1771 switch ( hdr->code )
1772 {
1773 case EN_MSGFILTER:
1774 {
1775 const MSGFILTER *msgf = (MSGFILTER *)lParam;
1776 UINT msg = msgf->msg;
1777
1778 // this is a bit crazy but richedit 1.0 sends us all mouse
1779 // events _except_ WM_LBUTTONUP (don't ask me why) so we have
1780 // generate the wxWin events for this message manually
1781 //
1782 // NB: in fact, this is still not totally correct as it does
1783 // send us WM_LBUTTONUP if the selection was cleared by the
1784 // last click -- so currently we get 2 events in this case,
1785 // but as I don't see any obvious way to check for this I
1786 // leave this code in place because it's still better than
1787 // not getting left up events at all
1788 if ( msg == WM_LBUTTONUP )
1789 {
1790 WXUINT flags = msgf->wParam;
1791 int x = GET_X_LPARAM(msgf->lParam),
1792 y = GET_Y_LPARAM(msgf->lParam);
1793
1794 HandleMouseEvent(msg, x, y, flags);
1795 }
1796 }
1797
1798 // return TRUE to process the event (and FALSE to ignore it)
1799 return TRUE;
1800
1801 case EN_LINK:
1802 {
1803 const ENLINK *enlink = (ENLINK *)hdr;
1804
1805 switch ( enlink->msg )
1806 {
1807 case WM_SETCURSOR:
1808 // ok, so it is hardcoded - do we really nee to
1809 // customize it?
1810 ::SetCursor(GetHcursorOf(wxCursor(wxCURSOR_HAND)));
1811 *result = TRUE;
1812 break;
1813
1814 case WM_MOUSEMOVE:
1815 case WM_LBUTTONDOWN:
1816 case WM_LBUTTONUP:
1817 case WM_LBUTTONDBLCLK:
1818 case WM_RBUTTONDOWN:
1819 case WM_RBUTTONUP:
1820 case WM_RBUTTONDBLCLK:
1821 // send a mouse event
1822 {
1823 static const wxEventType eventsMouse[] =
1824 {
1825 wxEVT_MOTION,
1826 wxEVT_LEFT_DOWN,
1827 wxEVT_LEFT_UP,
1828 wxEVT_LEFT_DCLICK,
1829 wxEVT_RIGHT_DOWN,
1830 wxEVT_RIGHT_UP,
1831 wxEVT_RIGHT_DCLICK,
1832 };
1833
1834 // the event ids are consecutive
1835 wxMouseEvent
1836 evtMouse(eventsMouse[enlink->msg - WM_MOUSEMOVE]);
1837
1838 InitMouseEvent(evtMouse,
1839 GET_X_LPARAM(enlink->lParam),
1840 GET_Y_LPARAM(enlink->lParam),
1841 enlink->wParam);
1842
1843 wxTextUrlEvent event(m_windowId, evtMouse,
1844 enlink->chrg.cpMin,
1845 enlink->chrg.cpMax);
1846
1847 InitCommandEvent(event);
1848
1849 *result = ProcessCommand(event);
1850 }
1851 break;
1852 }
1853 }
1854 return TRUE;
1855 }
1856
1857 // not processed, leave it to the base class
1858 return wxTextCtrlBase::MSWOnNotify(idCtrl, lParam, result);
1859 }
1860
1861 // ----------------------------------------------------------------------------
1862 // colour setting for the rich edit controls
1863 // ----------------------------------------------------------------------------
1864
1865 bool wxTextCtrl::SetBackgroundColour(const wxColour& colour)
1866 {
1867 if ( !wxTextCtrlBase::SetBackgroundColour(colour) )
1868 {
1869 // colour didn't really change
1870 return FALSE;
1871 }
1872
1873 if ( IsRich() )
1874 {
1875 // rich edit doesn't use WM_CTLCOLOR, hence we need to send
1876 // EM_SETBKGNDCOLOR additionally
1877 ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour));
1878 }
1879
1880 return TRUE;
1881 }
1882
1883 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1884 {
1885 if ( !wxTextCtrlBase::SetForegroundColour(colour) )
1886 {
1887 // colour didn't really change
1888 return FALSE;
1889 }
1890
1891 if ( IsRich() )
1892 {
1893 // change the colour of everything
1894 CHARFORMAT cf;
1895 wxZeroMemory(cf);
1896 cf.cbSize = sizeof(cf);
1897 cf.dwMask = CFM_COLOR;
1898 cf.crTextColor = wxColourToRGB(colour);
1899 ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf);
1900 }
1901
1902 return TRUE;
1903 }
1904
1905 // ----------------------------------------------------------------------------
1906 // styling support for rich edit controls
1907 // ----------------------------------------------------------------------------
1908
1909 #if wxUSE_RICHEDIT
1910
1911 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
1912 {
1913 if ( !IsRich() )
1914 {
1915 // can't do it with normal text control
1916 return FALSE;
1917 }
1918
1919 // the richedit 1.0 doesn't handle setting background colour, so don't
1920 // even try to do anything if it's the only thing we want to change
1921 if ( m_verRichEdit == 1 && !style.HasFont() && !style.HasTextColour() &&
1922 !style.HasLeftIndent() && !style.HasRightIndent() && !style.HasAlignment() &&
1923 !style.HasTabs() )
1924 {
1925 // nothing to do: return TRUE if there was really nothing to do and
1926 // FALSE if we failed to set bg colour
1927 return !style.HasBackgroundColour();
1928 }
1929
1930 // order the range if needed
1931 if ( start > end )
1932 {
1933 long tmp = start;
1934 start = end;
1935 end = tmp;
1936 }
1937
1938 // we can only change the format of the selection, so select the range we
1939 // want and restore the old selection later
1940 long startOld, endOld;
1941 GetSelection(&startOld, &endOld);
1942
1943 // but do we really have to change the selection?
1944 bool changeSel = start != startOld || end != endOld;
1945
1946 if ( changeSel )
1947 {
1948 DoSetSelection(start, end, FALSE /* don't scroll caret into view */);
1949 }
1950
1951 // initialize CHARFORMAT struct
1952 #if wxUSE_RICHEDIT2
1953 CHARFORMAT2 cf;
1954 #else
1955 CHARFORMAT cf;
1956 #endif
1957
1958 wxZeroMemory(cf);
1959
1960 // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
1961 // CHARFORMAT in that case
1962 #if wxUSE_RICHEDIT2
1963 if ( m_verRichEdit == 1 )
1964 {
1965 // this is the only thing the control is going to grok
1966 cf.cbSize = sizeof(CHARFORMAT);
1967 }
1968 else
1969 #endif
1970 {
1971 // CHARFORMAT or CHARFORMAT2
1972 cf.cbSize = sizeof(cf);
1973 }
1974
1975 if ( style.HasFont() )
1976 {
1977 // VZ: CFM_CHARSET doesn't seem to do anything at all in RichEdit 2.0
1978 // but using it doesn't seem to hurt neither so leaving it for now
1979
1980 cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET |
1981 CFM_ITALIC | CFM_BOLD | CFM_UNDERLINE;
1982
1983 // fill in data from LOGFONT but recalculate lfHeight because we need
1984 // the real height in twips and not the negative number which
1985 // wxFillLogFont() returns (this is correct in general and works with
1986 // the Windows font mapper, but not here)
1987 LOGFONT lf;
1988 wxFillLogFont(&lf, &style.GetFont());
1989 cf.yHeight = 20*style.GetFont().GetPointSize(); // 1 pt = 20 twips
1990 cf.bCharSet = lf.lfCharSet;
1991 cf.bPitchAndFamily = lf.lfPitchAndFamily;
1992 wxStrncpy( cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName) );
1993
1994 // also deal with underline/italic/bold attributes: note that we must
1995 // always set CFM_ITALIC &c bits in dwMask, even if we don't set the
1996 // style to allow clearing it
1997 if ( lf.lfItalic )
1998 {
1999 cf.dwEffects |= CFE_ITALIC;
2000 }
2001
2002 if ( lf.lfWeight == FW_BOLD )
2003 {
2004 cf.dwEffects |= CFE_BOLD;
2005 }
2006
2007 if ( lf.lfUnderline )
2008 {
2009 cf.dwEffects |= CFE_UNDERLINE;
2010 }
2011
2012 // strikeout fonts are not supported by wxWindows
2013 }
2014
2015 if ( style.HasTextColour() )
2016 {
2017 cf.dwMask |= CFM_COLOR;
2018 cf.crTextColor = wxColourToRGB(style.GetTextColour());
2019 }
2020
2021 #if wxUSE_RICHEDIT2
2022 if ( m_verRichEdit != 1 && style.HasBackgroundColour() )
2023 {
2024 cf.dwMask |= CFM_BACKCOLOR;
2025 cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
2026 }
2027 #endif // wxUSE_RICHEDIT2
2028
2029 // do format the selection
2030 bool ok = ::SendMessage(GetHwnd(), EM_SETCHARFORMAT,
2031 SCF_SELECTION, (LPARAM)&cf) != 0;
2032 if ( !ok )
2033 {
2034 wxLogDebug(_T("SendMessage(EM_SETCHARFORMAT, SCF_SELECTION) failed"));
2035 }
2036
2037 // now do the paragraph formatting
2038 PARAFORMAT2 pf;
2039 wxZeroMemory(pf);
2040 // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2041 // PARAFORMAT in that case
2042 #if wxUSE_RICHEDIT2
2043 if ( m_verRichEdit == 1 )
2044 {
2045 // this is the only thing the control is going to grok
2046 pf.cbSize = sizeof(PARAFORMAT);
2047 }
2048 else
2049 #endif
2050 {
2051 // PARAFORMAT or PARAFORMAT2
2052 pf.cbSize = sizeof(pf);
2053 }
2054
2055 if (style.HasAlignment())
2056 {
2057 pf.dwMask |= PFM_ALIGNMENT;
2058 if (style.GetAlignment() == wxTEXT_ALIGNMENT_RIGHT)
2059 pf.wAlignment = PFA_RIGHT;
2060 else if (style.GetAlignment() == wxTEXT_ALIGNMENT_CENTRE)
2061 pf.wAlignment = PFA_CENTER;
2062 else if (style.GetAlignment() == wxTEXT_ALIGNMENT_JUSTIFIED)
2063 pf.wAlignment = PFA_JUSTIFY;
2064 else
2065 pf.wAlignment = PFA_LEFT;
2066 }
2067
2068 if (style.HasLeftIndent())
2069 {
2070 pf.dwMask |= PFM_STARTINDENT;
2071
2072 // Convert from 1/10 mm to TWIPS
2073 pf.dxStartIndent = (int) (((double) style.GetLeftIndent()) * mm2twips / 10.0) ;
2074
2075 // TODO: do we need to specify dxOffset?
2076 }
2077
2078 if (style.HasRightIndent())
2079 {
2080 pf.dwMask |= PFM_RIGHTINDENT;
2081
2082 // Convert from 1/10 mm to TWIPS
2083 pf.dxRightIndent = (int) (((double) style.GetRightIndent()) * mm2twips / 10.0) ;
2084 }
2085
2086 if (style.HasTabs())
2087 {
2088 pf.dwMask |= PFM_TABSTOPS;
2089
2090 const wxArrayInt& tabs = style.GetTabs();
2091
2092 pf.cTabCount = wxMin(tabs.GetCount(), MAX_TAB_STOPS);
2093 size_t i;
2094 for (i = 0; i < (size_t) pf.cTabCount; i++)
2095 {
2096 // Convert from 1/10 mm to TWIPS
2097 pf.rgxTabs[i] = (int) (((double) tabs[i]) * mm2twips / 10.0) ;
2098 }
2099 }
2100
2101 if (pf.dwMask != 0)
2102 {
2103 // do format the selection
2104 bool ok = ::SendMessage(GetHwnd(), EM_SETPARAFORMAT,
2105 0, (LPARAM) &pf) != 0;
2106 if ( !ok )
2107 {
2108 wxLogDebug(_T("SendMessage(EM_SETPARAFORMAT, 0) failed"));
2109 }
2110 }
2111
2112 if ( changeSel )
2113 {
2114 // restore the original selection
2115 DoSetSelection(startOld, endOld, FALSE);
2116 }
2117
2118 return ok;
2119 }
2120
2121 bool wxTextCtrl::SetDefaultStyle(const wxTextAttr& style)
2122 {
2123 if ( !wxTextCtrlBase::SetDefaultStyle(style) )
2124 return FALSE;
2125
2126 // we have to do this or the style wouldn't apply for the text typed by the
2127 // user
2128 long posLast = GetLastPosition();
2129 SetStyle(posLast, posLast, m_defaultStyle);
2130
2131 return TRUE;
2132 }
2133
2134 bool wxTextCtrl::GetStyle(long position, wxTextAttr& style)
2135 {
2136 if ( !IsRich() )
2137 {
2138 // can't do it with normal text control
2139 return FALSE;
2140 }
2141
2142 // initialize CHARFORMAT struct
2143 #if wxUSE_RICHEDIT2
2144 CHARFORMAT2 cf;
2145 #else
2146 CHARFORMAT cf;
2147 #endif
2148
2149 wxZeroMemory(cf);
2150
2151 // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2152 // CHARFORMAT in that case
2153 #if wxUSE_RICHEDIT2
2154 if ( m_verRichEdit == 1 )
2155 {
2156 // this is the only thing the control is going to grok
2157 cf.cbSize = sizeof(CHARFORMAT);
2158 }
2159 else
2160 #endif
2161 {
2162 // CHARFORMAT or CHARFORMAT2
2163 cf.cbSize = sizeof(cf);
2164 }
2165 // we can only change the format of the selection, so select the range we
2166 // want and restore the old selection later
2167 long startOld, endOld;
2168 GetSelection(&startOld, &endOld);
2169
2170 // but do we really have to change the selection?
2171 bool changeSel = position != startOld || position != endOld;
2172
2173 if ( changeSel )
2174 {
2175 DoSetSelection(position, position, FALSE /* don't scroll caret into view */);
2176 }
2177
2178 // get the selection formatting
2179 (void) ::SendMessage(GetHwnd(), EM_GETCHARFORMAT,
2180 SCF_SELECTION, (LPARAM)&cf) ;
2181
2182 LOGFONT lf;
2183 lf.lfHeight = cf.yHeight;
2184 lf.lfWidth = 0;
2185 lf.lfCharSet = ANSI_CHARSET; // FIXME: how to get correct charset?
2186 lf.lfClipPrecision = 0;
2187 lf.lfEscapement = 0;
2188 wxStrcpy(lf.lfFaceName, cf.szFaceName);
2189 if (cf.dwEffects & CFE_ITALIC)
2190 lf.lfItalic = TRUE;
2191 lf.lfOrientation = 0;
2192 lf.lfPitchAndFamily = cf.bPitchAndFamily;
2193 lf.lfQuality = 0;
2194 if (cf.dwEffects & CFE_STRIKEOUT)
2195 lf.lfStrikeOut = TRUE;
2196 if (cf.dwEffects & CFE_UNDERLINE)
2197 lf.lfUnderline = TRUE;
2198 if (cf.dwEffects & CFE_BOLD)
2199 lf.lfWeight = FW_BOLD;
2200
2201 wxFont font = wxCreateFontFromLogFont(& lf);
2202 if (font.Ok())
2203 {
2204 style.SetFont(font);
2205 }
2206 style.SetTextColour(wxColour(cf.crTextColor));
2207
2208 #if wxUSE_RICHEDIT2
2209 if ( m_verRichEdit != 1 )
2210 {
2211 // cf.dwMask |= CFM_BACKCOLOR;
2212 style.SetBackgroundColour(wxColour(cf.crBackColor));
2213 }
2214 #endif // wxUSE_RICHEDIT2
2215
2216 // now get the paragraph formatting
2217 PARAFORMAT2 pf;
2218 wxZeroMemory(pf);
2219 // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2220 // PARAFORMAT in that case
2221 #if wxUSE_RICHEDIT2
2222 if ( m_verRichEdit == 1 )
2223 {
2224 // this is the only thing the control is going to grok
2225 pf.cbSize = sizeof(PARAFORMAT);
2226 }
2227 else
2228 #endif
2229 {
2230 // PARAFORMAT or PARAFORMAT2
2231 pf.cbSize = sizeof(pf);
2232 }
2233
2234 // do format the selection
2235 (void) ::SendMessage(GetHwnd(), EM_GETPARAFORMAT, 0, (LPARAM) &pf) ;
2236
2237 style.SetLeftIndent( (int) ((double) pf.dxStartIndent * twips2mm * 10.0) );
2238 style.SetRightIndent( (int) ((double) pf.dxRightIndent * twips2mm * 10.0) );
2239
2240 if (pf.wAlignment == PFA_CENTER)
2241 style.SetAlignment(wxTEXT_ALIGNMENT_CENTRE);
2242 else if (pf.wAlignment == PFA_RIGHT)
2243 style.SetAlignment(wxTEXT_ALIGNMENT_RIGHT);
2244 else if (pf.wAlignment == PFA_JUSTIFY)
2245 style.SetAlignment(wxTEXT_ALIGNMENT_JUSTIFIED);
2246 else
2247 style.SetAlignment(wxTEXT_ALIGNMENT_LEFT);
2248
2249 wxArrayInt tabStops;
2250 size_t i;
2251 for (i = 0; i < (size_t) pf.cTabCount; i++)
2252 {
2253 tabStops[i] = (int) ((double) (pf.rgxTabs[i] & 0xFFFF) * twips2mm * 10.0) ;
2254 }
2255
2256 if ( changeSel )
2257 {
2258 // restore the original selection
2259 DoSetSelection(startOld, endOld, FALSE);
2260 }
2261
2262 return TRUE;
2263 }
2264
2265 #endif
2266
2267 // ----------------------------------------------------------------------------
2268 // wxRichEditModule
2269 // ----------------------------------------------------------------------------
2270
2271 bool wxRichEditModule::OnInit()
2272 {
2273 // don't do anything - we will load it when needed
2274 return TRUE;
2275 }
2276
2277 void wxRichEditModule::OnExit()
2278 {
2279 for ( size_t i = 0; i < WXSIZEOF(ms_hRichEdit); i++ )
2280 {
2281 if ( ms_hRichEdit[i] )
2282 {
2283 ::FreeLibrary(ms_hRichEdit[i]);
2284 ms_hRichEdit[i] = NULL;
2285 }
2286 }
2287 }
2288
2289 /* static */
2290 bool wxRichEditModule::Load(int version)
2291 {
2292 // we don't support loading richedit 3.0 as I don't know how to distinguish
2293 // it from 2.0 anyhow
2294 wxCHECK_MSG( version == 1 || version == 2, FALSE,
2295 _T("incorrect richedit control version requested") );
2296
2297 // make it the index in the array
2298 version--;
2299
2300 if ( ms_hRichEdit[version] == (HINSTANCE)-1 )
2301 {
2302 // we had already tried to load it and failed
2303 return FALSE;
2304 }
2305
2306 if ( ms_hRichEdit[version] )
2307 {
2308 // we've already got this one
2309 return TRUE;
2310 }
2311
2312 wxString dllname = version ? _T("riched20") : _T("riched32");
2313 dllname += _T(".dll");
2314
2315 ms_hRichEdit[version] = ::LoadLibrary(dllname);
2316
2317 if ( !ms_hRichEdit[version] )
2318 {
2319 wxLogSysError(_("Could not load Rich Edit DLL '%s'"), dllname.c_str());
2320
2321 ms_hRichEdit[version] = (HINSTANCE)-1;
2322
2323 return FALSE;
2324 }
2325
2326 return TRUE;
2327 }
2328
2329 #endif // wxUSE_RICHEDIT
2330
2331 #endif // wxUSE_TEXTCTRL
wxWidgets (Impactor)