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