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[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 and Markus Holzem
9 // Licence: wxWindows license
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
56 #include <string.h>
57 #include <stdlib.h>
58 #include <sys/types.h>
59
60 #if wxUSE_RICHEDIT && (!defined(__GNUWIN32_OLD__) || defined(__CYGWIN10__))
61 #include <richedit.h>
62 #endif
63
64 // old mingw32 doesn't define this
65 #ifndef CFM_CHARSET
66 #define CFM_CHARSET 0x08000000
67 #endif // CFM_CHARSET
68
69 #ifndef CFM_BACKCOLOR
70 #define CFM_BACKCOLOR 0x04000000
71 #endif
72
73 // cygwin does not have these defined for richedit
74 #ifndef ENM_LINK
75 #define ENM_LINK 0x04000000
76 #endif
77
78 #ifndef EM_AUTOURLDETECT
79 #define EM_AUTOURLDETECT (WM_USER + 91)
80 #endif
81
82 #ifndef EN_LINK
83 #define EN_LINK 0x070b
84
85 typedef struct _enlink
86 {
87 NMHDR nmhdr;
88 UINT msg;
89 WPARAM wParam;
90 LPARAM lParam;
91 CHARRANGE chrg;
92 } ENLINK;
93 #endif // ENLINK
94
95 #ifndef SF_UNICODE
96 #define SF_UNICODE 0x0010
97 #endif
98
99 // Watcom C++ doesn't define this
100 #ifndef SCF_ALL
101 #define SCF_ALL 0x0004
102 #endif
103
104 // ----------------------------------------------------------------------------
105 // private functions
106 // ----------------------------------------------------------------------------
107
108 #if wxUSE_RICHEDIT
109
110 DWORD CALLBACK wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb);
111
112 #endif // wxUSE_RICHEDIT
113
114 // ----------------------------------------------------------------------------
115 // private classes
116 // ----------------------------------------------------------------------------
117
118 #if wxUSE_RICHEDIT
119
120 // this module initializes RichEdit DLL(s) if needed
121 class wxRichEditModule : public wxModule
122 {
123 public:
124 virtual bool OnInit();
125 virtual void OnExit();
126
127 // load the richedit DLL of at least of required version
128 static bool Load(int version = 1);
129
130 private:
131 // the handles to richedit 1.0 and 2.0 (or 3.0) DLLs
132 static HINSTANCE ms_hRichEdit[2];
133
134 DECLARE_DYNAMIC_CLASS(wxRichEditModule)
135 };
136
137 HINSTANCE wxRichEditModule::ms_hRichEdit[2] = { NULL, NULL };
138
139 IMPLEMENT_DYNAMIC_CLASS(wxRichEditModule, wxModule)
140
141 #endif // wxUSE_RICHEDIT
142
143 // ----------------------------------------------------------------------------
144 // event tables and other macros
145 // ----------------------------------------------------------------------------
146
147 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxControl)
148
149 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
150 EVT_CHAR(wxTextCtrl::OnChar)
151 EVT_DROP_FILES(wxTextCtrl::OnDropFiles)
152
153 #if wxUSE_RICHEDIT
154 EVT_RIGHT_UP(wxTextCtrl::OnRightClick)
155 #endif
156
157 EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
158 EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
159 EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
160 EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
161 EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
162 EVT_MENU(wxID_CLEAR, wxTextCtrl::OnDelete)
163 EVT_MENU(wxID_SELECTALL, wxTextCtrl::OnSelectAll)
164
165 EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
166 EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
167 EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
168 EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
169 EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
170 EVT_UPDATE_UI(wxID_CLEAR, wxTextCtrl::OnUpdateDelete)
171 EVT_UPDATE_UI(wxID_SELECTALL, wxTextCtrl::OnUpdateSelectAll)
172 #ifdef __WIN16__
173 EVT_ERASE_BACKGROUND(wxTextCtrl::OnEraseBackground)
174 #endif
175 END_EVENT_TABLE()
176
177 // ============================================================================
178 // implementation
179 // ============================================================================
180
181 // ----------------------------------------------------------------------------
182 // creation
183 // ----------------------------------------------------------------------------
184
185 void wxTextCtrl::Init()
186 {
187 #if wxUSE_RICHEDIT
188 m_verRichEdit = 0;
189 #endif // wxUSE_RICHEDIT
190
191 m_privateContextMenu = NULL;
192 m_suppressNextUpdate = FALSE;
193 }
194
195 wxTextCtrl::~wxTextCtrl()
196 {
197 if (m_privateContextMenu)
198 {
199 delete m_privateContextMenu;
200 m_privateContextMenu = NULL;
201 }
202 }
203
204 bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id,
205 const wxString& value,
206 const wxPoint& pos,
207 const wxSize& size,
208 long style,
209 const wxValidator& validator,
210 const wxString& name)
211 {
212 // base initialization
213 if ( !CreateBase(parent, id, pos, size, style, validator, name) )
214 return FALSE;
215
216 if ( parent )
217 parent->AddChild(this);
218
219 // translate wxWin style flags to MSW ones
220 WXDWORD msStyle = MSWGetCreateWindowFlags();
221
222 // do create the control - either an EDIT or RICHEDIT
223 wxString windowClass = wxT("EDIT");
224
225 #if wxUSE_RICHEDIT
226 if ( m_windowStyle & wxTE_AUTO_URL )
227 {
228 // automatic URL detection only works in RichEdit 2.0+
229 m_windowStyle |= wxTE_RICH2;
230 }
231
232 if ( m_windowStyle & wxTE_RICH2 )
233 {
234 // using richedit 2.0 implies using wxTE_RICH
235 m_windowStyle |= wxTE_RICH;
236 }
237
238 // we need to load the richedit DLL before creating the rich edit control
239 if ( m_windowStyle & wxTE_RICH )
240 {
241 static bool s_errorGiven = FALSE;// MT-FIXME
242
243 // Which version do we need? Use 1.0 by default because it is much more
244 // like the the standard EDIT or 2.0 if explicitly requested, but use
245 // only 2.0 in Unicode mode as 1.0 doesn't support Unicode at all
246 //
247 // TODO: RichEdit 3.0 is apparently capable of emulating RichEdit 1.0
248 // (and thus EDIT) much better than RichEdit 2.0 so we probably
249 // should use 3.0 if available as it is the best of both worlds -
250 // but as I can't test it right now I don't do it (VZ)
251 #if wxUSE_UNICODE
252 const int verRichEdit = 2;
253 #else // !wxUSE_UNICODE
254 int verRichEdit = m_windowStyle & wxTE_RICH2 ? 2 : 1;
255 #endif // wxUSE_UNICODE/!wxUSE_UNICODE
256
257 // only give the error msg once if the DLL can't be loaded
258 if ( !s_errorGiven )
259 {
260 // try to load the RichEdit DLL (will do nothing if already done)
261 if ( !wxRichEditModule::Load(verRichEdit) )
262 {
263 #if !wxUSE_UNICODE
264 // try another version?
265 verRichEdit = 3 - verRichEdit; // 1 <-> 2
266
267 if ( !wxRichEditModule::Load(verRichEdit) )
268 #endif // wxUSE_UNICODE
269 {
270 wxLogError(_("Impossible to create a rich edit control, using simple text control instead. Please reinstall riched32.dll"));
271
272 s_errorGiven = TRUE;
273 }
274 }
275 }
276
277 // have we managed to load any richedit version?
278 if ( !s_errorGiven )
279 {
280 msStyle |= ES_AUTOVSCROLL;
281
282 m_verRichEdit = verRichEdit;
283 if ( m_verRichEdit == 1 )
284 {
285 windowClass = wxT("RICHEDIT");
286 }
287 else
288 {
289 #ifndef RICHEDIT_CLASS
290 wxString RICHEDIT_CLASS;
291 RICHEDIT_CLASS.Printf(_T("RichEdit%d0"), m_verRichEdit);
292 #if wxUSE_UNICODE
293 RICHEDIT_CLASS += _T('W');
294 #else // ANSI
295 RICHEDIT_CLASS += _T('A');
296 #endif // Unicode/ANSI
297 #endif // !RICHEDIT_CLASS
298
299 windowClass = RICHEDIT_CLASS;
300 }
301 }
302 }
303 #endif // wxUSE_RICHEDIT
304
305 // we need to turn '\n's into "\r\n"s for the multiline controls
306 wxString valueWin;
307 if ( m_windowStyle & wxTE_MULTILINE )
308 {
309 valueWin = wxTextFile::Translate(value, wxTextFileType_Dos);
310 }
311 else // single line
312 {
313 valueWin = value;
314 }
315
316 if ( !MSWCreateControl(windowClass, msStyle, pos, size, valueWin) )
317 return FALSE;
318
319 SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
320
321 #if wxUSE_RICHEDIT
322 if ( IsRich() )
323 {
324 // enable the events we're interested in: we want to get EN_CHANGE as
325 // for the normal controls
326 LPARAM mask = ENM_CHANGE;
327
328 if ( GetRichVersion() == 1 )
329 {
330 // we also need EN_MSGFILTER for richedit 1.0 for the reasons
331 // explained in its handler
332 mask |= ENM_MOUSEEVENTS;
333 }
334 else if ( m_windowStyle & wxTE_AUTO_URL )
335 {
336 mask |= ENM_LINK;
337
338 ::SendMessage(GetHwnd(), EM_AUTOURLDETECT, TRUE, 0);
339 }
340
341 ::SendMessage(GetHwnd(), EM_SETEVENTMASK, 0, mask);
342 }
343 #endif // wxUSE_RICHEDIT
344
345 return TRUE;
346 }
347
348 // Make sure the window style (etc.) reflects the HWND style (roughly)
349 void wxTextCtrl::AdoptAttributesFromHWND()
350 {
351 wxWindow::AdoptAttributesFromHWND();
352
353 HWND hWnd = GetHwnd();
354 long style = ::GetWindowLong(hWnd, GWL_STYLE);
355
356 // retrieve the style to see whether this is an edit or richedit ctrl
357 #if wxUSE_RICHEDIT
358 wxString classname = wxGetWindowClass(GetHWND());
359
360 if ( classname.IsSameAs(_T("EDIT"), FALSE /* no case */) )
361 {
362 m_verRichEdit = 0;
363 }
364 else // rich edit?
365 {
366 wxChar c;
367 if ( wxSscanf(classname, _T("RichEdit%d0%c"), &m_verRichEdit, &c) != 2 )
368 {
369 wxLogDebug(_T("Unknown edit control '%s'."), classname.c_str());
370
371 m_verRichEdit = 0;
372 }
373 }
374 #endif // wxUSE_RICHEDIT
375
376 if (style & ES_MULTILINE)
377 m_windowStyle |= wxTE_MULTILINE;
378 if (style & ES_PASSWORD)
379 m_windowStyle |= wxTE_PASSWORD;
380 if (style & ES_READONLY)
381 m_windowStyle |= wxTE_READONLY;
382 if (style & ES_WANTRETURN)
383 m_windowStyle |= wxTE_PROCESS_ENTER;
384 if (style & ES_CENTER)
385 m_windowStyle |= wxTE_CENTRE;
386 if (style & ES_RIGHT)
387 m_windowStyle |= wxTE_RIGHT;
388 }
389
390 WXDWORD wxTextCtrl::MSWGetStyle(long style, WXDWORD *exstyle) const
391 {
392 // default border for the text controls is the sunken one
393 if ( (style & wxBORDER_MASK) == wxBORDER_DEFAULT )
394 {
395 style |= wxBORDER_SUNKEN;
396 }
397
398 long msStyle = wxControl::MSWGetStyle(style, exstyle);
399
400 // default styles
401 msStyle |= ES_LEFT;
402
403 if ( style & wxTE_MULTILINE )
404 {
405 wxASSERT_MSG( !(style & wxTE_PROCESS_ENTER),
406 wxT("wxTE_PROCESS_ENTER style is ignored for multiline text controls (they always process it)") );
407
408 msStyle |= ES_MULTILINE | ES_WANTRETURN;
409 if ( !(style & wxTE_NO_VSCROLL) )
410 msStyle |= WS_VSCROLL;
411
412 style |= wxTE_PROCESS_ENTER;
413 }
414 else // !multiline
415 {
416 // there is really no reason to not have this style for single line
417 // text controls
418 msStyle |= ES_AUTOHSCROLL;
419 }
420
421 if ( style & wxHSCROLL )
422 msStyle |= WS_HSCROLL | ES_AUTOHSCROLL;
423
424 if ( style & wxTE_READONLY )
425 msStyle |= ES_READONLY;
426
427 if ( style & wxTE_PASSWORD )
428 msStyle |= ES_PASSWORD;
429
430 if ( style & wxTE_AUTO_SCROLL )
431 msStyle |= ES_AUTOHSCROLL;
432
433 if ( style & wxTE_NOHIDESEL )
434 msStyle |= ES_NOHIDESEL;
435
436 if ( style & wxTE_CENTRE )
437 msStyle |= ES_CENTER;
438
439 if ( style & wxTE_RIGHT )
440 msStyle |= ES_RIGHT;
441
442 return msStyle;
443 }
444
445 void wxTextCtrl::SetWindowStyleFlag(long style)
446 {
447 if ( (style & wxBORDER_MASK) == wxBORDER_DEFAULT )
448 style |= wxBORDER_SUNKEN;
449
450 #if wxUSE_RICHEDIT
451 // we have to deal with some styles separately because they can't be
452 // changed by simply calling SetWindowLong(GWL_STYLE) but can be changed
453 // using richedit-specific EM_SETOPTIONS
454 if ( IsRich() &&
455 ((style & wxTE_NOHIDESEL) != (GetWindowStyle() & wxTE_NOHIDESEL)) )
456 {
457 bool set = (style & wxTE_NOHIDESEL) != 0;
458
459 ::SendMessage(GetHwnd(), EM_SETOPTIONS, set ? ECOOP_OR : ECOOP_AND,
460 set ? ECO_NOHIDESEL : ~ECO_NOHIDESEL);
461 }
462 #endif // wxUSE_RICHEDIT
463
464 wxControl::SetWindowStyleFlag(style);
465 }
466
467 // ----------------------------------------------------------------------------
468 // set/get the controls text
469 // ----------------------------------------------------------------------------
470
471 wxString wxTextCtrl::GetValue() const
472 {
473 // range 0..-1 is special for GetRange() and means to retrieve all text
474 return GetRange(0, -1);
475 }
476
477 wxString wxTextCtrl::GetRange(long from, long to) const
478 {
479 wxString str;
480
481 if ( from >= to && to != -1 )
482 {
483 // nothing to retrieve
484 return str;
485 }
486
487 #if wxUSE_RICHEDIT
488 if ( IsRich() )
489 {
490 int len = GetWindowTextLength(GetHwnd());
491 if ( len > from )
492 {
493 // alloc one extra WORD as needed by the control
494 wxChar *p = str.GetWriteBuf(++len);
495
496 TEXTRANGE textRange;
497 textRange.chrg.cpMin = from;
498 textRange.chrg.cpMax = to == -1 ? len : to;
499 textRange.lpstrText = p;
500
501 (void)SendMessage(GetHwnd(), EM_GETTEXTRANGE, 0, (LPARAM)&textRange);
502
503 if ( m_verRichEdit > 1 )
504 {
505 // RichEdit 2.0 uses just CR ('\r') for the newlines which is
506 // neither Unix nor Windows style - convert it to something
507 // reasonable
508 for ( ; *p; p++ )
509 {
510 if ( *p == _T('\r') )
511 *p = _T('\n');
512 }
513 }
514
515 str.UngetWriteBuf();
516
517 if ( m_verRichEdit == 1 )
518 {
519 // convert to the canonical form - see comment below
520 str = wxTextFile::Translate(str, wxTextFileType_Unix);
521 }
522 }
523 //else: no text at all, leave the string empty
524 }
525 else
526 #endif // wxUSE_RICHEDIT
527 {
528 // retrieve all text
529 str = wxGetWindowText(GetHWND());
530
531 // need only a range?
532 if ( from < to )
533 {
534 str = str.Mid(from, to - from);
535 }
536
537 // WM_GETTEXT uses standard DOS CR+LF (\r\n) convention - convert to the
538 // canonical one (same one as above) for consistency with the other kinds
539 // of controls and, more importantly, with the other ports
540 str = wxTextFile::Translate(str, wxTextFileType_Unix);
541 }
542
543 return str;
544 }
545
546 void wxTextCtrl::SetValue(const wxString& value)
547 {
548 // if the text is long enough, it's faster to just set it instead of first
549 // comparing it with the old one (chances are that it will be different
550 // anyhow, this comparison is there to avoid flicker for small single-line
551 // edit controls mostly)
552 if ( (value.length() > 0x400) || (value != GetValue()) )
553 {
554 DoWriteText(value, FALSE /* not selection only */);
555
556 // mark the control as being not dirty - we changed its text, not the
557 // user
558 DiscardEdits();
559
560 // for compatibility, don't move the cursor when doing SetValue()
561 SetInsertionPoint(0);
562 }
563 }
564
565 #if wxUSE_RICHEDIT && (!wxUSE_UNICODE || wxUSE_UNICODE_MSLU)
566
567 DWORD CALLBACK wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb)
568 {
569 *pcb = 0;
570
571 wchar_t *wbuf = (wchar_t *)buf;
572 const wchar_t *wpc = *(const wchar_t **)dwCookie;
573 while ( cb && *wpc )
574 {
575 *wbuf++ = *wpc++;
576
577 cb -= sizeof(wchar_t);
578 (*pcb) += sizeof(wchar_t);
579 }
580
581 *(const wchar_t **)dwCookie = wpc;
582
583 return 0;
584 }
585
586 extern long wxEncodingToCodepage(wxFontEncoding encoding); // from utils.cpp
587
588 #ifdef __WXWINE__
589 bool wxTextCtrl::StreamIn(const wxString& value,
590 wxFontEncoding WXUNUSED(encoding),
591 bool selectionOnly)
592 {
593 return FALSE;
594 }
595 #else // !__WXWINE__
596
597 #if wxUSE_UNICODE_MSLU
598 bool wxTextCtrl::StreamIn(const wxString& value,
599 wxFontEncoding WXUNUSED(encoding),
600 bool selectionOnly)
601 {
602 const wchar_t *wpc = value.c_str();
603 #else // !wxUSE_UNICODE_MSLU
604 bool wxTextCtrl::StreamIn(const wxString& value,
605 wxFontEncoding encoding,
606 bool selectionOnly)
607 {
608 // we have to use EM_STREAMIN to force richedit control 2.0+ to show any
609 // text in the non default charset -- otherwise it thinks it knows better
610 // than we do and always shows it in the default one
611
612 // first get the Windows code page for this encoding
613 long codepage = wxEncodingToCodepage(encoding);
614 if ( codepage == -1 )
615 {
616 // unknown encoding
617 return FALSE;
618 }
619
620 // next translate to Unicode using this code page
621 int len = ::MultiByteToWideChar(codepage, 0, value, -1, NULL, 0);
622
623 #if wxUSE_WCHAR_T
624 wxWCharBuffer wchBuf(len);
625 #else
626 wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
627 #endif
628
629 if ( !::MultiByteToWideChar(codepage, 0, value, -1,
630 (wchar_t *)(const wchar_t *)wchBuf, len) )
631 {
632 wxLogLastError(_T("MultiByteToWideChar"));
633 }
634
635 // finally, stream it in the control
636 const wchar_t *wpc = wchBuf;
637 #endif // wxUSE_UNICODE_MSLU
638
639 EDITSTREAM eds;
640 wxZeroMemory(eds);
641 eds.dwCookie = (DWORD)&wpc;
642 // the cast below is needed for broken (very) old mingw32 headers
643 eds.pfnCallback = (EDITSTREAMCALLBACK)wxRichEditStreamIn;
644
645 // we're going to receive 2 EN_CHANGE notifications if we got any selection
646 // (same problem as in DoWriteText())
647 if ( selectionOnly && HasSelection() )
648 {
649 // so suppress one of them
650 m_suppressNextUpdate = TRUE;
651 }
652
653 if ( !::SendMessage(GetHwnd(), EM_STREAMIN,
654 SF_TEXT |
655 SF_UNICODE |
656 (selectionOnly ? SFF_SELECTION : 0),
657 (LPARAM)&eds) || eds.dwError )
658 {
659 wxLogLastError(_T("EM_STREAMIN"));
660 }
661
662 #if !wxUSE_WCHAR_T
663 free(wchBuf);
664 #endif // !wxUSE_WCHAR_T
665
666 return TRUE;
667 }
668
669 #endif // __WXWINE__/!__WXWINE__
670
671 #endif // wxUSE_RICHEDIT
672
673 void wxTextCtrl::WriteText(const wxString& value)
674 {
675 DoWriteText(value);
676 }
677
678 void wxTextCtrl::DoWriteText(const wxString& value, bool selectionOnly)
679 {
680 wxString valueDos;
681 if ( m_windowStyle & wxTE_MULTILINE )
682 valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
683 else
684 valueDos = value;
685
686 #if wxUSE_RICHEDIT
687 // there are several complications with the rich edit controls here
688 bool done = FALSE;
689 if ( IsRich() )
690 {
691 // first, ensure that the new text will be in the default style
692 if ( !m_defaultStyle.IsDefault() )
693 {
694 long start, end;
695 GetSelection(&start, &end);
696 SetStyle(start, end, m_defaultStyle);
697 }
698
699 #if wxUSE_UNICODE_MSLU
700 // RichEdit doesn't have Unicode version of EM_REPLACESEL on Win9x,
701 // but EM_STREAMIN works
702 if ( wxUsingUnicowsDll() && GetRichVersion() > 1 )
703 {
704 done = StreamIn(valueDos, wxFONTENCODING_SYSTEM, selectionOnly);
705 }
706 #endif // wxUSE_UNICODE_MSLU
707
708 #if !wxUSE_UNICODE && !defined(__WXWINE__)
709 // next check if the text we're inserting must be shown in a non
710 // default charset -- this only works for RichEdit > 1.0
711 if ( GetRichVersion() > 1 )
712 {
713 wxFont font = m_defaultStyle.GetFont();
714 if ( !font.Ok() )
715 font = GetFont();
716
717 if ( font.Ok() )
718 {
719 wxFontEncoding encoding = font.GetEncoding();
720 if ( encoding != wxFONTENCODING_SYSTEM )
721 {
722 done = StreamIn(valueDos, encoding, selectionOnly);
723 }
724 }
725 }
726 #endif // !wxUSE_UNICODE
727 }
728
729 if ( !done )
730 #endif // wxUSE_RICHEDIT
731 {
732 // in some cases we get 2 EN_CHANGE notifications after the SendMessage
733 // call below which is confusing for the client code and so should be
734 // avoided
735 //
736 // these cases are: (a) plain EDIT controls if EM_REPLACESEL is used
737 // and there is a non empty selection currently and (b) rich text
738 // controls in any case
739 if (
740 #if wxUSE_RICHEDIT
741 IsRich() ||
742 #endif // wxUSE_RICHEDIT
743 (selectionOnly && HasSelection()) )
744 {
745 m_suppressNextUpdate = TRUE;
746 }
747
748 ::SendMessage(GetHwnd(), selectionOnly ? EM_REPLACESEL : WM_SETTEXT,
749 0, (LPARAM)valueDos.c_str());
750
751 // OTOH, non rich text controls don't generate any events at all when
752 // we use WM_SETTEXT -- have to emulate them here
753 if ( !selectionOnly
754 #if wxUSE_RICHEDIT
755 && !IsRich()
756 #endif // wxUSE_RICHEDIT
757 )
758 {
759 SendUpdateEvent();
760 }
761 }
762
763 AdjustSpaceLimit();
764 }
765
766 void wxTextCtrl::AppendText(const wxString& text)
767 {
768 SetInsertionPointEnd();
769
770 WriteText(text);
771
772 #if wxUSE_RICHEDIT
773 if ( IsMultiLine() && GetRichVersion() > 1 )
774 {
775 // setting the caret to the end and showing it simply doesn't work for
776 // RichEdit 2.0 -- force it to still do what we want
777 ::SendMessage(GetHwnd(), EM_LINESCROLL, 0, GetNumberOfLines());
778 }
779 #endif // wxUSE_RICHEDIT
780 }
781
782 void wxTextCtrl::Clear()
783 {
784 ::SetWindowText(GetHwnd(), wxT(""));
785
786 #if wxUSE_RICHEDIT
787 if ( !IsRich() )
788 #endif // wxUSE_RICHEDIT
789 {
790 // rich edit controls send EN_UPDATE from WM_SETTEXT handler themselves
791 // but the normal ones don't -- make Clear() behaviour consistent by
792 // always sending this event
793 SendUpdateEvent();
794 }
795 }
796
797 #ifdef __WIN32__
798
799 bool wxTextCtrl::EmulateKeyPress(const wxKeyEvent& event)
800 {
801 SetFocus();
802
803 size_t lenOld = GetValue().length();
804
805 wxUint32 code = event.GetRawKeyCode();
806 ::keybd_event(code, 0, 0 /* key press */, 0);
807 ::keybd_event(code, 0, KEYEVENTF_KEYUP, 0);
808
809 // assume that any alphanumeric key changes the total number of characters
810 // in the control - this should work in 99% of cases
811 return GetValue().length() != lenOld;
812 }
813
814 #endif // __WIN32__
815
816 // ----------------------------------------------------------------------------
817 // Clipboard operations
818 // ----------------------------------------------------------------------------
819
820 void wxTextCtrl::Copy()
821 {
822 if (CanCopy())
823 {
824 ::SendMessage(GetHwnd(), WM_COPY, 0, 0L);
825 }
826 }
827
828 void wxTextCtrl::Cut()
829 {
830 if (CanCut())
831 {
832 ::SendMessage(GetHwnd(), WM_CUT, 0, 0L);
833 }
834 }
835
836 void wxTextCtrl::Paste()
837 {
838 if (CanPaste())
839 {
840 ::SendMessage(GetHwnd(), WM_PASTE, 0, 0L);
841 }
842 }
843
844 bool wxTextCtrl::HasSelection() const
845 {
846 long from, to;
847 GetSelection(&from, &to);
848 return from != to;
849 }
850
851 bool wxTextCtrl::CanCopy() const
852 {
853 // Can copy if there's a selection
854 return HasSelection();
855 }
856
857 bool wxTextCtrl::CanCut() const
858 {
859 return CanCopy() && IsEditable();
860 }
861
862 bool wxTextCtrl::CanPaste() const
863 {
864 if ( !IsEditable() )
865 return FALSE;
866
867 #if wxUSE_RICHEDIT
868 if ( IsRich() )
869 {
870 UINT cf = 0; // 0 == any format
871
872 return ::SendMessage(GetHwnd(), EM_CANPASTE, cf, 0) != 0;
873 }
874 #endif // wxUSE_RICHEDIT
875
876 // Standard edit control: check for straight text on clipboard
877 if ( !::OpenClipboard(GetHwndOf(wxTheApp->GetTopWindow())) )
878 return FALSE;
879
880 bool isTextAvailable = ::IsClipboardFormatAvailable(CF_TEXT) != 0;
881 ::CloseClipboard();
882
883 return isTextAvailable;
884 }
885
886 // ----------------------------------------------------------------------------
887 // Accessors
888 // ----------------------------------------------------------------------------
889
890 void wxTextCtrl::SetEditable(bool editable)
891 {
892 HWND hWnd = GetHwnd();
893 SendMessage(hWnd, EM_SETREADONLY, (WPARAM)!editable, (LPARAM)0L);
894 }
895
896 void wxTextCtrl::SetInsertionPoint(long pos)
897 {
898 DoSetSelection(pos, pos);
899 }
900
901 void wxTextCtrl::SetInsertionPointEnd()
902 {
903 long pos;
904
905 #if wxUSE_RICHEDIT
906 if ( m_verRichEdit == 1 )
907 {
908 // we don't have to waste time calling GetLastPosition() in this case
909 pos = -1;
910 }
911 else // !RichEdit 1.0
912 #endif // wxUSE_RICHEDIT
913 {
914 pos = GetLastPosition();
915 }
916
917 SetInsertionPoint(pos);
918 }
919
920 long wxTextCtrl::GetInsertionPoint() const
921 {
922 #if wxUSE_RICHEDIT
923 if ( IsRich() )
924 {
925 CHARRANGE range;
926 range.cpMin = 0;
927 range.cpMax = 0;
928 SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
929 return range.cpMin;
930 }
931 #endif // wxUSE_RICHEDIT
932
933 DWORD Pos = (DWORD)SendMessage(GetHwnd(), EM_GETSEL, 0, 0L);
934 return Pos & 0xFFFF;
935 }
936
937 long wxTextCtrl::GetLastPosition() const
938 {
939 int numLines = GetNumberOfLines();
940 long posStartLastLine = XYToPosition(0, numLines - 1);
941
942 long lenLastLine = GetLengthOfLineContainingPos(posStartLastLine);
943
944 return posStartLastLine + lenLastLine;
945 }
946
947 // If the return values from and to are the same, there is no
948 // selection.
949 void wxTextCtrl::GetSelection(long* from, long* to) const
950 {
951 #if wxUSE_RICHEDIT
952 if ( IsRich() )
953 {
954 CHARRANGE charRange;
955 ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &charRange);
956
957 *from = charRange.cpMin;
958 *to = charRange.cpMax;
959 }
960 else
961 #endif // !wxUSE_RICHEDIT
962 {
963 DWORD dwStart, dwEnd;
964 ::SendMessage(GetHwnd(), EM_GETSEL, (WPARAM)&dwStart, (LPARAM)&dwEnd);
965
966 *from = dwStart;
967 *to = dwEnd;
968 }
969 }
970
971 bool wxTextCtrl::IsEditable() const
972 {
973 // strangely enough, we may be called before the control is created: our
974 // own Create() calls MSWGetStyle() which calls AcceptsFocus() which calls
975 // us
976 if ( !m_hWnd )
977 return TRUE;
978
979 long style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
980
981 return (style & ES_READONLY) == 0;
982 }
983
984 // ----------------------------------------------------------------------------
985 // selection
986 // ----------------------------------------------------------------------------
987
988 void wxTextCtrl::SetSelection(long from, long to)
989 {
990 // if from and to are both -1, it means (in wxWindows) that all text should
991 // be selected - translate into Windows convention
992 if ( (from == -1) && (to == -1) )
993 {
994 from = 0;
995 to = -1;
996 }
997
998 DoSetSelection(from, to);
999 }
1000
1001 void wxTextCtrl::DoSetSelection(long from, long to, bool scrollCaret)
1002 {
1003 HWND hWnd = GetHwnd();
1004
1005 #ifdef __WIN32__
1006 #if wxUSE_RICHEDIT
1007 if ( IsRich() )
1008 {
1009 CHARRANGE range;
1010 range.cpMin = from;
1011 range.cpMax = to;
1012 SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM) &range);
1013 }
1014 else
1015 #endif // wxUSE_RICHEDIT
1016 {
1017 SendMessage(hWnd, EM_SETSEL, (WPARAM)from, (LPARAM)to);
1018 }
1019
1020 if ( scrollCaret )
1021 {
1022 SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
1023 }
1024 #else // Win16
1025 // WPARAM is 0: selection is scrolled into view
1026 SendMessage(hWnd, EM_SETSEL, (WPARAM)0, (LPARAM)MAKELONG(from, to));
1027 #endif // Win32/16
1028 }
1029
1030 // ----------------------------------------------------------------------------
1031 // Editing
1032 // ----------------------------------------------------------------------------
1033
1034 void wxTextCtrl::Replace(long from, long to, const wxString& value)
1035 {
1036 // Set selection and remove it
1037 DoSetSelection(from, to, FALSE /* don't scroll caret into view */);
1038
1039 SendMessage(GetHwnd(), EM_REPLACESEL,
1040 #ifdef __WIN32__
1041 TRUE,
1042 #else
1043 FALSE,
1044 #endif
1045 (LPARAM)value.c_str());
1046 }
1047
1048 void wxTextCtrl::Remove(long from, long to)
1049 {
1050 Replace(from, to, _T(""));
1051 }
1052
1053 bool wxTextCtrl::LoadFile(const wxString& file)
1054 {
1055 if ( wxTextCtrlBase::LoadFile(file) )
1056 {
1057 // update the size limit if needed
1058 AdjustSpaceLimit();
1059
1060 return TRUE;
1061 }
1062
1063 return FALSE;
1064 }
1065
1066 bool wxTextCtrl::IsModified() const
1067 {
1068 return SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0;
1069 }
1070
1071 // Makes 'unmodified'
1072 void wxTextCtrl::DiscardEdits()
1073 {
1074 SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0L);
1075 }
1076
1077 int wxTextCtrl::GetNumberOfLines() const
1078 {
1079 return (int)SendMessage(GetHwnd(), EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0);
1080 }
1081
1082 long wxTextCtrl::XYToPosition(long x, long y) const
1083 {
1084 // This gets the char index for the _beginning_ of this line
1085 long charIndex = SendMessage(GetHwnd(), EM_LINEINDEX, (WPARAM)y, (LPARAM)0);
1086
1087 return charIndex + x;
1088 }
1089
1090 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
1091 {
1092 HWND hWnd = GetHwnd();
1093
1094 // This gets the line number containing the character
1095 long lineNo;
1096 #if wxUSE_RICHEDIT
1097 if ( IsRich() )
1098 {
1099 lineNo = SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, (LPARAM)pos);
1100 }
1101 else
1102 #endif // wxUSE_RICHEDIT
1103 {
1104 lineNo = SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, 0);
1105 }
1106
1107 if ( lineNo == -1 )
1108 {
1109 // no such line
1110 return FALSE;
1111 }
1112
1113 // This gets the char index for the _beginning_ of this line
1114 long charIndex = SendMessage(hWnd, EM_LINEINDEX, (WPARAM)lineNo, (LPARAM)0);
1115 if ( charIndex == -1 )
1116 {
1117 return FALSE;
1118 }
1119
1120 // The X position must therefore be the different between pos and charIndex
1121 if ( x )
1122 *x = pos - charIndex;
1123 if ( y )
1124 *y = lineNo;
1125
1126 return TRUE;
1127 }
1128
1129 void wxTextCtrl::ShowPosition(long pos)
1130 {
1131 HWND hWnd = GetHwnd();
1132
1133 // To scroll to a position, we pass the number of lines and characters
1134 // to scroll *by*. This means that we need to:
1135 // (1) Find the line position of the current line.
1136 // (2) Find the line position of pos.
1137 // (3) Scroll by (pos - current).
1138 // For now, ignore the horizontal scrolling.
1139
1140 // Is this where scrolling is relative to - the line containing the caret?
1141 // Or is the first visible line??? Try first visible line.
1142 // int currentLineLineNo1 = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)-1, (LPARAM)0L);
1143
1144 int currentLineLineNo = (int)SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, (WPARAM)0, (LPARAM)0L);
1145
1146 int specifiedLineLineNo = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, (LPARAM)0L);
1147
1148 int linesToScroll = specifiedLineLineNo - currentLineLineNo;
1149
1150 if (linesToScroll != 0)
1151 (void)SendMessage(hWnd, EM_LINESCROLL, (WPARAM)0, (LPARAM)linesToScroll);
1152 }
1153
1154 long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const
1155 {
1156 return ::SendMessage(GetHwnd(), EM_LINELENGTH, (WPARAM)pos, 0);
1157 }
1158
1159 int wxTextCtrl::GetLineLength(long lineNo) const
1160 {
1161 long pos = XYToPosition(0, lineNo);
1162
1163 return GetLengthOfLineContainingPos(pos);
1164 }
1165
1166 wxString wxTextCtrl::GetLineText(long lineNo) const
1167 {
1168 size_t len = (size_t)GetLineLength(lineNo) + 1;
1169
1170 // there must be at least enough place for the length WORD in the
1171 // buffer
1172 len += sizeof(WORD);
1173
1174 wxString str;
1175 wxChar *buf = str.GetWriteBuf(len);
1176
1177 *(WORD *)buf = (WORD)len;
1178 len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf);
1179 buf[len] = 0;
1180
1181 str.UngetWriteBuf(len);
1182
1183 return str;
1184 }
1185
1186 void wxTextCtrl::SetMaxLength(unsigned long len)
1187 {
1188 ::SendMessage(GetHwnd(), EM_LIMITTEXT, len, 0);
1189 }
1190
1191 // ----------------------------------------------------------------------------
1192 // Undo/redo
1193 // ----------------------------------------------------------------------------
1194
1195 void wxTextCtrl::Undo()
1196 {
1197 if (CanUndo())
1198 {
1199 ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1200 }
1201 }
1202
1203 void wxTextCtrl::Redo()
1204 {
1205 if (CanRedo())
1206 {
1207 // Same as Undo, since Undo undoes the undo, i.e. a redo.
1208 ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1209 }
1210 }
1211
1212 bool wxTextCtrl::CanUndo() const
1213 {
1214 return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1215 }
1216
1217 bool wxTextCtrl::CanRedo() const
1218 {
1219 return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1220 }
1221
1222 // ----------------------------------------------------------------------------
1223 // implemenation details
1224 // ----------------------------------------------------------------------------
1225
1226 void wxTextCtrl::Command(wxCommandEvent & event)
1227 {
1228 SetValue(event.GetString());
1229 ProcessCommand (event);
1230 }
1231
1232 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
1233 {
1234 // By default, load the first file into the text window.
1235 if (event.GetNumberOfFiles() > 0)
1236 {
1237 LoadFile(event.GetFiles()[0]);
1238 }
1239 }
1240
1241 // ----------------------------------------------------------------------------
1242 // kbd input processing
1243 // ----------------------------------------------------------------------------
1244
1245 bool wxTextCtrl::MSWShouldPreProcessMessage(WXMSG* pMsg)
1246 {
1247 MSG *msg = (MSG *)pMsg;
1248
1249 // check for our special keys here: if we don't do it and the parent frame
1250 // uses them as accelerators, they wouldn't work at all, so we disable
1251 // usual preprocessing for them
1252 if ( msg->message == WM_KEYDOWN )
1253 {
1254 WORD vkey = (WORD) msg->wParam;
1255 if ( (HIWORD(msg->lParam) & KF_ALTDOWN) == KF_ALTDOWN )
1256 {
1257 if ( vkey == VK_BACK )
1258 return FALSE;
1259 }
1260 else // no Alt
1261 {
1262 // we want to process some Ctrl-foo and Shift-bar but no key
1263 // combinations without either Ctrl or Shift nor with both of them
1264 // pressed
1265 const int ctrl = wxIsCtrlDown(),
1266 shift = wxIsShiftDown();
1267 switch ( ctrl + shift )
1268 {
1269 default:
1270 wxFAIL_MSG( _T("how many modifiers have we got?") );
1271 // fall through
1272
1273 case 0:
1274 case 2:
1275 break;
1276
1277 case 1:
1278 // either Ctrl or Shift pressed
1279 if ( ctrl )
1280 {
1281 switch ( vkey )
1282 {
1283 case 'C':
1284 case 'V':
1285 case 'X':
1286 case VK_INSERT:
1287 case VK_DELETE:
1288 case VK_HOME:
1289 case VK_END:
1290 return FALSE;
1291 }
1292 }
1293 else // Shift is pressed
1294 {
1295 if ( vkey == VK_INSERT || vkey == VK_DELETE )
1296 return FALSE;
1297 }
1298 }
1299 }
1300 }
1301
1302 return wxControl::MSWShouldPreProcessMessage(pMsg);
1303 }
1304
1305 void wxTextCtrl::OnChar(wxKeyEvent& event)
1306 {
1307 switch ( event.KeyCode() )
1308 {
1309 case WXK_RETURN:
1310 if ( !(m_windowStyle & wxTE_MULTILINE) )
1311 {
1312 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1313 InitCommandEvent(event);
1314 event.SetString(GetValue());
1315 if ( GetEventHandler()->ProcessEvent(event) )
1316 return;
1317 }
1318 //else: multiline controls need Enter for themselves
1319
1320 break;
1321
1322 case WXK_TAB:
1323 // always produce navigation event - even if we process TAB
1324 // ourselves the fact that we got here means that the user code
1325 // decided to skip processing of this TAB - probably to let it
1326 // do its default job.
1327 {
1328 wxNavigationKeyEvent eventNav;
1329 eventNav.SetDirection(!event.ShiftDown());
1330 eventNav.SetWindowChange(event.ControlDown());
1331 eventNav.SetEventObject(this);
1332
1333 if ( GetParent()->GetEventHandler()->ProcessEvent(eventNav) )
1334 return;
1335 }
1336 break;
1337 }
1338
1339 // no, we didn't process it
1340 event.Skip();
1341 }
1342
1343 long wxTextCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
1344 {
1345 long lRc = wxTextCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
1346
1347 if ( nMsg == WM_GETDLGCODE )
1348 {
1349 // we always want the chars and the arrows: the arrows for navigation
1350 // and the chars because we want Ctrl-C to work even in a read only
1351 // control
1352 long lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
1353
1354 if ( IsEditable() )
1355 {
1356 // we may have several different cases:
1357 // 1. normal case: both TAB and ENTER are used for dlg navigation
1358 // 2. ctrl which wants TAB for itself: ENTER is used to pass to the
1359 // next control in the dialog
1360 // 3. ctrl which wants ENTER for itself: TAB is used for dialog
1361 // navigation
1362 // 4. ctrl which wants both TAB and ENTER: Ctrl-ENTER is used to go
1363 // to the next control
1364
1365 // the multiline edit control should always get <Return> for itself
1366 if ( HasFlag(wxTE_PROCESS_ENTER) || HasFlag(wxTE_MULTILINE) )
1367 lDlgCode |= DLGC_WANTMESSAGE;
1368
1369 if ( HasFlag(wxTE_PROCESS_TAB) )
1370 lDlgCode |= DLGC_WANTTAB;
1371
1372 lRc |= lDlgCode;
1373 }
1374 else // !editable
1375 {
1376 // NB: use "=", not "|=" as the base class version returns the
1377 // same flags is this state as usual (i.e. including
1378 // DLGC_WANTMESSAGE). This is strange (how does it work in the
1379 // native Win32 apps?) but for now live with it.
1380 lRc = lDlgCode;
1381 }
1382 }
1383
1384 return lRc;
1385 }
1386
1387 // ----------------------------------------------------------------------------
1388 // text control event processing
1389 // ----------------------------------------------------------------------------
1390
1391 bool wxTextCtrl::SendUpdateEvent()
1392 {
1393 // is event reporting suspended?
1394 if ( m_suppressNextUpdate )
1395 {
1396 // do process the next one
1397 m_suppressNextUpdate = FALSE;
1398
1399 return FALSE;
1400 }
1401
1402 wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, GetId());
1403 InitCommandEvent(event);
1404 event.SetString(GetValue());
1405
1406 return ProcessCommand(event);
1407 }
1408
1409 bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
1410 {
1411 switch ( param )
1412 {
1413 case EN_SETFOCUS:
1414 case EN_KILLFOCUS:
1415 {
1416 wxFocusEvent event(param == EN_KILLFOCUS ? wxEVT_KILL_FOCUS
1417 : wxEVT_SET_FOCUS,
1418 m_windowId);
1419 event.SetEventObject(this);
1420 GetEventHandler()->ProcessEvent(event);
1421 }
1422 break;
1423
1424 case EN_CHANGE:
1425 SendUpdateEvent();
1426 break;
1427
1428 case EN_MAXTEXT:
1429 // the text size limit has been hit -- try to increase it
1430 if ( !AdjustSpaceLimit() )
1431 {
1432 wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, m_windowId);
1433 InitCommandEvent(event);
1434 event.SetString(GetValue());
1435 ProcessCommand(event);
1436 }
1437 break;
1438
1439 // the other edit notification messages are not processed
1440 default:
1441 return FALSE;
1442 }
1443
1444 // processed
1445 return TRUE;
1446 }
1447
1448 WXHBRUSH wxTextCtrl::OnCtlColor(WXHDC pDC, WXHWND WXUNUSED(pWnd), WXUINT WXUNUSED(nCtlColor),
1449 #if wxUSE_CTL3D
1450 WXUINT message,
1451 WXWPARAM wParam,
1452 WXLPARAM lParam
1453 #else
1454 WXUINT WXUNUSED(message),
1455 WXWPARAM WXUNUSED(wParam),
1456 WXLPARAM WXUNUSED(lParam)
1457 #endif
1458 )
1459 {
1460 #if wxUSE_CTL3D
1461 if ( m_useCtl3D )
1462 {
1463 HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
1464 return (WXHBRUSH) hbrush;
1465 }
1466 #endif // wxUSE_CTL3D
1467
1468 HDC hdc = (HDC)pDC;
1469 if (GetParent()->GetTransparentBackground())
1470 SetBkMode(hdc, TRANSPARENT);
1471 else
1472 SetBkMode(hdc, OPAQUE);
1473
1474 wxColour colBack = GetBackgroundColour();
1475
1476 if (!IsEnabled() && (GetWindowStyle() & wxTE_MULTILINE) == 0)
1477 colBack = wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE);
1478
1479 ::SetBkColor(hdc, wxColourToRGB(colBack));
1480 ::SetTextColor(hdc, wxColourToRGB(GetForegroundColour()));
1481
1482 wxBrush *brush = wxTheBrushList->FindOrCreateBrush(colBack, wxSOLID);
1483
1484 return (WXHBRUSH)brush->GetResourceHandle();
1485 }
1486
1487 // In WIN16, need to override normal erasing because
1488 // Ctl3D doesn't use the wxWindows background colour.
1489 #ifdef __WIN16__
1490 void wxTextCtrl::OnEraseBackground(wxEraseEvent& event)
1491 {
1492 wxColour col(m_backgroundColour);
1493
1494 #if wxUSE_CTL3D
1495 if (m_useCtl3D)
1496 col = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
1497 #endif
1498
1499 RECT rect;
1500 ::GetClientRect(GetHwnd(), &rect);
1501
1502 COLORREF ref = wxColourToRGB(col);
1503 HBRUSH hBrush = ::CreateSolidBrush(ref);
1504 if ( !hBrush )
1505 wxLogLastError(wxT("CreateSolidBrush"));
1506
1507 HDC hdc = (HDC)event.GetDC()->GetHDC();
1508
1509 int mode = ::SetMapMode(hdc, MM_TEXT);
1510
1511 ::FillRect(hdc, &rect, hBrush);
1512 ::DeleteObject(hBrush);
1513 ::SetMapMode(hdc, mode);
1514
1515 }
1516 #endif // Win16
1517
1518 bool wxTextCtrl::AdjustSpaceLimit()
1519 {
1520 #ifndef __WIN16__
1521 unsigned int limit = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
1522
1523 // HACK: we try to automatically extend the limit for the amount of text
1524 // to allow (interactively) entering more than 64Kb of text under
1525 // Win9x but we shouldn't reset the text limit which was previously
1526 // set explicitly with SetMaxLength()
1527 //
1528 // we could solve this by storing the limit we set in wxTextCtrl but
1529 // to save space we prefer to simply test here the actual limit
1530 // value: we consider that SetMaxLength() can only be called for
1531 // values < 32Kb
1532 if ( limit < 0x8000 )
1533 {
1534 // we've got more text than limit set by SetMaxLength()
1535 return FALSE;
1536 }
1537
1538 unsigned int len = ::GetWindowTextLength(GetHwnd());
1539 if ( len >= limit )
1540 {
1541 limit = len + 0x8000; // 32Kb
1542
1543 #if wxUSE_RICHEDIT
1544 if ( IsRich() )
1545 {
1546 // as a nice side effect, this also allows passing limit > 64Kb
1547 ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, limit);
1548 }
1549 else
1550 #endif // wxUSE_RICHEDIT
1551 {
1552 if ( limit > 0xffff )
1553 {
1554 // this will set it to a platform-dependent maximum (much more
1555 // than 64Kb under NT)
1556 limit = 0;
1557 }
1558
1559 ::SendMessage(GetHwnd(), EM_LIMITTEXT, limit, 0);
1560 }
1561 }
1562 #endif // !Win16
1563
1564 // we changed the limit
1565 return TRUE;
1566 }
1567
1568 bool wxTextCtrl::AcceptsFocus() const
1569 {
1570 // we don't want focus if we can't be edited unless we're a multiline
1571 // control because then it might be still nice to get focus from keyboard
1572 // to be able to scroll it without mouse
1573 return (IsEditable() || IsMultiLine()) && wxControl::AcceptsFocus();
1574 }
1575
1576 wxSize wxTextCtrl::DoGetBestSize() const
1577 {
1578 int cx, cy;
1579 wxGetCharSize(GetHWND(), &cx, &cy, &GetFont());
1580
1581 int wText = DEFAULT_ITEM_WIDTH;
1582
1583 int hText = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy);
1584 if ( m_windowStyle & wxTE_MULTILINE )
1585 {
1586 hText *= wxMax(GetNumberOfLines(), 5);
1587 }
1588 //else: for single line control everything is ok
1589
1590 return wxSize(wText, hText);
1591 }
1592
1593 // ----------------------------------------------------------------------------
1594 // standard handlers for standard edit menu events
1595 // ----------------------------------------------------------------------------
1596
1597 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1598 {
1599 Cut();
1600 }
1601
1602 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1603 {
1604 Copy();
1605 }
1606
1607 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1608 {
1609 Paste();
1610 }
1611
1612 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1613 {
1614 Undo();
1615 }
1616
1617 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1618 {
1619 Redo();
1620 }
1621
1622 void wxTextCtrl::OnDelete(wxCommandEvent& event)
1623 {
1624 long from, to;
1625 GetSelection(& from, & to);
1626 if (from != -1 && to != -1)
1627 Remove(from, to);
1628 }
1629
1630 void wxTextCtrl::OnSelectAll(wxCommandEvent& event)
1631 {
1632 SetSelection(-1, -1);
1633 }
1634
1635 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1636 {
1637 event.Enable( CanCut() );
1638 }
1639
1640 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1641 {
1642 event.Enable( CanCopy() );
1643 }
1644
1645 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1646 {
1647 event.Enable( CanPaste() );
1648 }
1649
1650 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1651 {
1652 event.Enable( CanUndo() );
1653 }
1654
1655 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1656 {
1657 event.Enable( CanRedo() );
1658 }
1659
1660 void wxTextCtrl::OnUpdateDelete(wxUpdateUIEvent& event)
1661 {
1662 long from, to;
1663 GetSelection(& from, & to);
1664 event.Enable(from != -1 && to != -1 && from != to && IsEditable()) ;
1665 }
1666
1667 void wxTextCtrl::OnUpdateSelectAll(wxUpdateUIEvent& event)
1668 {
1669 event.Enable(GetLastPosition() > 0);
1670 }
1671
1672 void wxTextCtrl::OnRightClick(wxMouseEvent& event)
1673 {
1674 #if wxUSE_RICHEDIT
1675 if (IsRich())
1676 {
1677 if (!m_privateContextMenu)
1678 {
1679 m_privateContextMenu = new wxMenu;
1680 m_privateContextMenu->Append(wxID_UNDO, _("&Undo"));
1681 m_privateContextMenu->Append(wxID_REDO, _("&Redo"));
1682 m_privateContextMenu->AppendSeparator();
1683 m_privateContextMenu->Append(wxID_CUT, _("Cu&t"));
1684 m_privateContextMenu->Append(wxID_COPY, _("&Copy"));
1685 m_privateContextMenu->Append(wxID_PASTE, _("&Paste"));
1686 m_privateContextMenu->Append(wxID_CLEAR, _("&Delete"));
1687 m_privateContextMenu->AppendSeparator();
1688 m_privateContextMenu->Append(wxID_SELECTALL, _("Select &All"));
1689 }
1690 PopupMenu(m_privateContextMenu, event.GetPosition());
1691 return;
1692 }
1693 else
1694 #endif
1695 event.Skip();
1696 }
1697
1698 // the rest of the file only deals with the rich edit controls
1699 #if wxUSE_RICHEDIT
1700
1701 // ----------------------------------------------------------------------------
1702 // EN_LINK processing
1703 // ----------------------------------------------------------------------------
1704
1705 bool wxTextCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
1706 {
1707 #ifndef __WXWINE__
1708 NMHDR *hdr = (NMHDR* )lParam;
1709 switch ( hdr->code )
1710 {
1711 case EN_MSGFILTER:
1712 {
1713 const MSGFILTER *msgf = (MSGFILTER *)lParam;
1714 UINT msg = msgf->msg;
1715
1716 // this is a bit crazy but richedit 1.0 sends us all mouse
1717 // events _except_ WM_LBUTTONUP (don't ask me why) so we have
1718 // generate the wxWin events for this message manually
1719 //
1720 // NB: in fact, this is still not totally correct as it does
1721 // send us WM_LBUTTONUP if the selection was cleared by the
1722 // last click -- so currently we get 2 events in this case,
1723 // but as I don't see any obvious way to check for this I
1724 // leave this code in place because it's still better than
1725 // not getting left up events at all
1726 if ( msg == WM_LBUTTONUP )
1727 {
1728 WXUINT flags = msgf->wParam;
1729 int x = GET_X_LPARAM(msgf->lParam),
1730 y = GET_Y_LPARAM(msgf->lParam);
1731
1732 HandleMouseEvent(msg, x, y, flags);
1733 }
1734 }
1735
1736 // return TRUE to process the event (and FALSE to ignore it)
1737 return TRUE;
1738
1739 case EN_LINK:
1740 {
1741 const ENLINK *enlink = (ENLINK *)hdr;
1742
1743 switch ( enlink->msg )
1744 {
1745 case WM_SETCURSOR:
1746 // ok, so it is hardcoded - do we really nee to
1747 // customize it?
1748 ::SetCursor(GetHcursorOf(wxCursor(wxCURSOR_HAND)));
1749 *result = TRUE;
1750 break;
1751
1752 case WM_MOUSEMOVE:
1753 case WM_LBUTTONDOWN:
1754 case WM_LBUTTONUP:
1755 case WM_LBUTTONDBLCLK:
1756 case WM_RBUTTONDOWN:
1757 case WM_RBUTTONUP:
1758 case WM_RBUTTONDBLCLK:
1759 // send a mouse event
1760 {
1761 static const wxEventType eventsMouse[] =
1762 {
1763 wxEVT_MOTION,
1764 wxEVT_LEFT_DOWN,
1765 wxEVT_LEFT_UP,
1766 wxEVT_LEFT_DCLICK,
1767 wxEVT_RIGHT_DOWN,
1768 wxEVT_RIGHT_UP,
1769 wxEVT_RIGHT_DCLICK,
1770 };
1771
1772 // the event ids are consecutive
1773 wxMouseEvent
1774 evtMouse(eventsMouse[enlink->msg - WM_MOUSEMOVE]);
1775
1776 InitMouseEvent(evtMouse,
1777 GET_X_LPARAM(enlink->lParam),
1778 GET_Y_LPARAM(enlink->lParam),
1779 enlink->wParam);
1780
1781 wxTextUrlEvent event(m_windowId, evtMouse,
1782 enlink->chrg.cpMin,
1783 enlink->chrg.cpMax);
1784
1785 InitCommandEvent(event);
1786
1787 *result = ProcessCommand(event);
1788 }
1789 break;
1790 }
1791 }
1792 return TRUE;
1793 }
1794 #endif
1795
1796 // not processed, leave it to the base class
1797 return wxTextCtrlBase::MSWOnNotify(idCtrl, lParam, result);
1798 }
1799
1800 // ----------------------------------------------------------------------------
1801 // colour setting for the rich edit controls
1802 // ----------------------------------------------------------------------------
1803
1804 bool wxTextCtrl::SetBackgroundColour(const wxColour& colour)
1805 {
1806 if ( !wxTextCtrlBase::SetBackgroundColour(colour) )
1807 {
1808 // colour didn't really change
1809 return FALSE;
1810 }
1811
1812 if ( IsRich() )
1813 {
1814 // rich edit doesn't use WM_CTLCOLOR, hence we need to send
1815 // EM_SETBKGNDCOLOR additionally
1816 ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour));
1817 }
1818
1819 return TRUE;
1820 }
1821
1822 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1823 {
1824 if ( !wxTextCtrlBase::SetForegroundColour(colour) )
1825 {
1826 // colour didn't really change
1827 return FALSE;
1828 }
1829
1830 if ( IsRich() )
1831 {
1832 // change the colour of everything
1833 CHARFORMAT cf;
1834 wxZeroMemory(cf);
1835 cf.cbSize = sizeof(cf);
1836 cf.dwMask = CFM_COLOR;
1837 cf.crTextColor = wxColourToRGB(colour);
1838 ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf);
1839 }
1840
1841 return TRUE;
1842 }
1843
1844 // ----------------------------------------------------------------------------
1845 // styling support for rich edit controls
1846 // ----------------------------------------------------------------------------
1847
1848 #if wxUSE_RICHEDIT
1849
1850 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
1851 {
1852 #ifdef __WXWINE__
1853 return FALSE;
1854 #else
1855 if ( !IsRich() )
1856 {
1857 // can't do it with normal text control
1858 return FALSE;
1859 }
1860
1861 // the richedit 1.0 doesn't handle setting background colour, so don't
1862 // even try to do anything if it's the only thing we want to change
1863 if ( m_verRichEdit == 1 && !style.HasFont() && !style.HasTextColour() )
1864 {
1865 // nothing to do: return TRUE if there was really nothing to do and
1866 // FALSE if we failed to set bg colour
1867 return !style.HasBackgroundColour();
1868 }
1869
1870 // order the range if needed
1871 if ( start > end )
1872 {
1873 long tmp = start;
1874 start = end;
1875 end = tmp;
1876 }
1877
1878 // we can only change the format of the selection, so select the range we
1879 // want and restore the old selection later
1880 long startOld, endOld;
1881 GetSelection(&startOld, &endOld);
1882
1883 // but do we really have to change the selection?
1884 bool changeSel = start != startOld || end != endOld;
1885
1886 if ( changeSel )
1887 {
1888 DoSetSelection(start, end, FALSE /* don't scroll caret into view */);
1889 }
1890
1891 // initialize CHARFORMAT struct
1892 #if wxUSE_RICHEDIT2
1893 CHARFORMAT2 cf;
1894 #else
1895 CHARFORMAT cf;
1896 #endif
1897
1898 wxZeroMemory(cf);
1899
1900 // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
1901 // CHARFORMAT in that case
1902 #if wxUSE_RICHEDIT2
1903 if ( m_verRichEdit == 1 )
1904 {
1905 // this is the only thing the control is going to grok
1906 cf.cbSize = sizeof(CHARFORMAT);
1907 }
1908 else
1909 #endif
1910 {
1911 // CHARFORMAT or CHARFORMAT2
1912 cf.cbSize = sizeof(cf);
1913 }
1914
1915 if ( style.HasFont() )
1916 {
1917 // VZ: CFM_CHARSET doesn't seem to do anything at all in RichEdit 2.0
1918 // but using it doesn't seem to hurt neither so leaving it for now
1919
1920 cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET |
1921 CFM_ITALIC | CFM_BOLD | CFM_UNDERLINE;
1922
1923 // fill in data from LOGFONT but recalculate lfHeight because we need
1924 // the real height in twips and not the negative number which
1925 // wxFillLogFont() returns (this is correct in general and works with
1926 // the Windows font mapper, but not here)
1927 LOGFONT lf;
1928 wxFillLogFont(&lf, &style.GetFont());
1929 cf.yHeight = 20*style.GetFont().GetPointSize(); // 1 pt = 20 twips
1930 cf.bCharSet = lf.lfCharSet;
1931 cf.bPitchAndFamily = lf.lfPitchAndFamily;
1932 wxStrncpy( cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName) );
1933
1934 // also deal with underline/italic/bold attributes: note that we must
1935 // always set CFM_ITALIC &c bits in dwMask, even if we don't set the
1936 // style to allow clearing it
1937 if ( lf.lfItalic )
1938 {
1939 cf.dwEffects |= CFE_ITALIC;
1940 }
1941
1942 if ( lf.lfWeight == FW_BOLD )
1943 {
1944 cf.dwEffects |= CFE_BOLD;
1945 }
1946
1947 if ( lf.lfUnderline )
1948 {
1949 cf.dwEffects |= CFE_UNDERLINE;
1950 }
1951
1952 // strikeout fonts are not supported by wxWindows
1953 }
1954
1955 if ( style.HasTextColour() )
1956 {
1957 cf.dwMask |= CFM_COLOR;
1958 cf.crTextColor = wxColourToRGB(style.GetTextColour());
1959 }
1960
1961 #if wxUSE_RICHEDIT2
1962 if ( m_verRichEdit != 1 && style.HasBackgroundColour() )
1963 {
1964 cf.dwMask |= CFM_BACKCOLOR;
1965 cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
1966 }
1967 #endif // wxUSE_RICHEDIT2
1968
1969 // do format the selection
1970 bool ok = ::SendMessage(GetHwnd(), EM_SETCHARFORMAT,
1971 SCF_SELECTION, (LPARAM)&cf) != 0;
1972 if ( !ok )
1973 {
1974 wxLogDebug(_T("SendMessage(EM_SETCHARFORMAT, SCF_SELECTION) failed"));
1975 }
1976
1977 if ( changeSel )
1978 {
1979 // restore the original selection
1980 DoSetSelection(startOld, endOld, FALSE);
1981 }
1982
1983 return ok;
1984 #endif
1985 }
1986
1987 bool wxTextCtrl::SetDefaultStyle(const wxTextAttr& style)
1988 {
1989 if ( !wxTextCtrlBase::SetDefaultStyle(style) )
1990 return FALSE;
1991
1992 // we have to do this or the style wouldn't apply for the text typed by the
1993 // user
1994 long posLast = GetLastPosition();
1995 SetStyle(posLast, posLast, m_defaultStyle);
1996
1997 return TRUE;
1998 }
1999
2000 #endif
2001
2002 // ----------------------------------------------------------------------------
2003 // wxRichEditModule
2004 // ----------------------------------------------------------------------------
2005
2006 bool wxRichEditModule::OnInit()
2007 {
2008 // don't do anything - we will load it when needed
2009 return TRUE;
2010 }
2011
2012 void wxRichEditModule::OnExit()
2013 {
2014 for ( size_t i = 0; i < WXSIZEOF(ms_hRichEdit); i++ )
2015 {
2016 if ( ms_hRichEdit[i] )
2017 {
2018 ::FreeLibrary(ms_hRichEdit[i]);
2019 }
2020 }
2021 }
2022
2023 /* static */
2024 bool wxRichEditModule::Load(int version)
2025 {
2026 // we don't support loading richedit 3.0 as I don't know how to distinguish
2027 // it from 2.0 anyhow
2028 wxCHECK_MSG( version == 1 || version == 2, FALSE,
2029 _T("incorrect richedit control version requested") );
2030
2031 // make it the index in the array
2032 version--;
2033
2034 if ( ms_hRichEdit[version] == (HINSTANCE)-1 )
2035 {
2036 // we had already tried to load it and failed
2037 return FALSE;
2038 }
2039
2040 if ( ms_hRichEdit[version] )
2041 {
2042 // we've already got this one
2043 return TRUE;
2044 }
2045
2046 wxString dllname = version ? _T("riched20") : _T("riched32");
2047 dllname += _T(".dll");
2048
2049 ms_hRichEdit[version] = ::LoadLibrary(dllname);
2050
2051 if ( !ms_hRichEdit[version] )
2052 {
2053 wxLogSysError(_("Could not load Rich Edit DLL '%s'"), dllname.c_str());
2054
2055 ms_hRichEdit[version] = (HINSTANCE)-1;
2056
2057 return FALSE;
2058 }
2059
2060 return TRUE;
2061 }
2062
2063 #endif // wxUSE_RICHEDIT
2064
2065 #endif // wxUSE_TEXTCTRL
wxWidgets (Impactor)