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don't include missing.h before windows headers
[wxWidgets.git] / src / msw / textctrl.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: src/msw/textctrl.cpp
3 // Purpose: wxTextCtrl
4 // Author: Julian Smart
5 // Modified by:
6 // Created: 04/01/98
7 // RCS-ID: $Id$
8 // Copyright: (c) Julian Smart
9 // Licence: wxWindows licence
10 /////////////////////////////////////////////////////////////////////////////
11
12 // ============================================================================
13 // declarations
14 // ============================================================================
15
16 // ----------------------------------------------------------------------------
17 // headers
18 // ----------------------------------------------------------------------------
19
20 // For compilers that support precompilation, includes "wx.h".
21 #include "wx/wxprec.h"
22
23 #ifdef __BORLANDC__
24 #pragma hdrstop
25 #endif
26
27 #if wxUSE_TEXTCTRL && !(defined(__SMARTPHONE__) && defined(__WXWINCE__))
28
29 #ifndef WX_PRECOMP
30 #include "wx/textctrl.h"
31 #include "wx/settings.h"
32 #include "wx/brush.h"
33 #include "wx/utils.h"
34 #include "wx/intl.h"
35 #include "wx/log.h"
36 #include "wx/app.h"
37 #include "wx/menu.h"
38 #include "wx/math.h"
39 #include "wx/module.h"
40 #endif
41
42 #include "wx/sysopt.h"
43
44 #if wxUSE_CLIPBOARD
45 #include "wx/clipbrd.h"
46 #endif
47
48 #include "wx/textfile.h"
49
50 #include <windowsx.h>
51
52 #include "wx/msw/private.h"
53 #include "wx/msw/winundef.h"
54
55 #include <string.h>
56 #include <stdlib.h>
57
58 #ifndef __WXWINCE__
59 #include <sys/types.h>
60 #endif
61
62 #if wxUSE_RICHEDIT
63
64 #if wxUSE_INKEDIT
65 #include "wx/dynlib.h"
66 #endif
67
68 // old mingw32 has richedit stuff directly in windows.h and doesn't have
69 // richedit.h at all
70 #if !defined(__GNUWIN32_OLD__) || defined(__CYGWIN10__)
71 #include <richedit.h>
72 #endif
73
74 #endif // wxUSE_RICHEDIT
75
76 #include "wx/msw/missing.h"
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 || m_count == -2,
139 _T("wrong initial m_updatesCount value") );
140
141 if (m_count != -2)
142 m_count = 0;
143 //else: we don't want to count how many update events we get as we're going
144 // to ignore all of them
145 }
146
147 ~UpdatesCountFilter()
148 {
149 m_count = -1;
150 }
151
152 // return true if an event has been received
153 bool GotUpdate() const
154 {
155 return m_count == 1;
156 }
157
158 private:
159 int& m_count;
160
161 DECLARE_NO_COPY_CLASS(UpdatesCountFilter)
162 };
163
164 // ----------------------------------------------------------------------------
165 // event tables and other macros
166 // ----------------------------------------------------------------------------
167
168 #if wxUSE_EXTENDED_RTTI
169 WX_DEFINE_FLAGS( wxTextCtrlStyle )
170
171 wxBEGIN_FLAGS( wxTextCtrlStyle )
172 // new style border flags, we put them first to
173 // use them for streaming out
174 wxFLAGS_MEMBER(wxBORDER_SIMPLE)
175 wxFLAGS_MEMBER(wxBORDER_SUNKEN)
176 wxFLAGS_MEMBER(wxBORDER_DOUBLE)
177 wxFLAGS_MEMBER(wxBORDER_RAISED)
178 wxFLAGS_MEMBER(wxBORDER_STATIC)
179 wxFLAGS_MEMBER(wxBORDER_NONE)
180
181 // old style border flags
182 wxFLAGS_MEMBER(wxSIMPLE_BORDER)
183 wxFLAGS_MEMBER(wxSUNKEN_BORDER)
184 wxFLAGS_MEMBER(wxDOUBLE_BORDER)
185 wxFLAGS_MEMBER(wxRAISED_BORDER)
186 wxFLAGS_MEMBER(wxSTATIC_BORDER)
187 wxFLAGS_MEMBER(wxBORDER)
188
189 // standard window styles
190 wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
191 wxFLAGS_MEMBER(wxCLIP_CHILDREN)
192 wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
193 wxFLAGS_MEMBER(wxWANTS_CHARS)
194 wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
195 wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
196 wxFLAGS_MEMBER(wxVSCROLL)
197 wxFLAGS_MEMBER(wxHSCROLL)
198
199 wxFLAGS_MEMBER(wxTE_PROCESS_ENTER)
200 wxFLAGS_MEMBER(wxTE_PROCESS_TAB)
201 wxFLAGS_MEMBER(wxTE_MULTILINE)
202 wxFLAGS_MEMBER(wxTE_PASSWORD)
203 wxFLAGS_MEMBER(wxTE_READONLY)
204 wxFLAGS_MEMBER(wxHSCROLL)
205 wxFLAGS_MEMBER(wxTE_RICH)
206 wxFLAGS_MEMBER(wxTE_RICH2)
207 wxFLAGS_MEMBER(wxTE_AUTO_URL)
208 wxFLAGS_MEMBER(wxTE_NOHIDESEL)
209 wxFLAGS_MEMBER(wxTE_LEFT)
210 wxFLAGS_MEMBER(wxTE_CENTRE)
211 wxFLAGS_MEMBER(wxTE_RIGHT)
212 wxFLAGS_MEMBER(wxTE_DONTWRAP)
213 wxFLAGS_MEMBER(wxTE_CHARWRAP)
214 wxFLAGS_MEMBER(wxTE_WORDWRAP)
215
216 wxEND_FLAGS( wxTextCtrlStyle )
217
218 IMPLEMENT_DYNAMIC_CLASS_XTI(wxTextCtrl, wxControl,"wx/textctrl.h")
219
220 wxBEGIN_PROPERTIES_TABLE(wxTextCtrl)
221 wxEVENT_PROPERTY( TextUpdated , wxEVT_COMMAND_TEXT_UPDATED , wxCommandEvent )
222 wxEVENT_PROPERTY( TextEnter , wxEVT_COMMAND_TEXT_ENTER , wxCommandEvent )
223
224 wxPROPERTY( Font , wxFont , SetFont , GetFont , EMPTY_MACROVALUE, 0 /*flags*/ , wxT("Helpstring") , wxT("group") )
225 wxPROPERTY( Value , wxString , SetValue, GetValue, wxString() , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
226 wxPROPERTY_FLAGS( WindowStyle , wxTextCtrlStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
227 wxEND_PROPERTIES_TABLE()
228
229 wxBEGIN_HANDLERS_TABLE(wxTextCtrl)
230 wxEND_HANDLERS_TABLE()
231
232 wxCONSTRUCTOR_6( wxTextCtrl , wxWindow* , Parent , wxWindowID , Id , wxString , Value , wxPoint , Position , wxSize , Size , long , WindowStyle)
233 #else
234 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxTextCtrlBase)
235 #endif
236
237
238 BEGIN_EVENT_TABLE(wxTextCtrl, wxTextCtrlBase)
239 EVT_CHAR(wxTextCtrl::OnChar)
240 EVT_DROP_FILES(wxTextCtrl::OnDropFiles)
241
242 #if wxUSE_RICHEDIT
243 EVT_CONTEXT_MENU(wxTextCtrl::OnContextMenu)
244 #endif
245
246 EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
247 EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
248 EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
249 EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
250 EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
251 EVT_MENU(wxID_CLEAR, wxTextCtrl::OnDelete)
252 EVT_MENU(wxID_SELECTALL, wxTextCtrl::OnSelectAll)
253
254 EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
255 EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
256 EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
257 EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
258 EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
259 EVT_UPDATE_UI(wxID_CLEAR, wxTextCtrl::OnUpdateDelete)
260 EVT_UPDATE_UI(wxID_SELECTALL, wxTextCtrl::OnUpdateSelectAll)
261
262 EVT_SET_FOCUS(wxTextCtrl::OnSetFocus)
263 END_EVENT_TABLE()
264
265 // ----------------------------------------------------------------------------
266 // function prototypes
267 // ----------------------------------------------------------------------------
268
269 LRESULT APIENTRY _EXPORT wxTextCtrlWndProc(HWND hWnd,
270 UINT message,
271 WPARAM wParam,
272 LPARAM lParam);
273
274 // ---------------------------------------------------------------------------
275 // global vars
276 // ---------------------------------------------------------------------------
277
278 // the pointer to standard text control wnd proc
279 static WNDPROC gs_wndprocEdit = (WNDPROC)NULL;
280
281 // ============================================================================
282 // implementation
283 // ============================================================================
284
285 // ----------------------------------------------------------------------------
286 // wnd proc for subclassed edit control
287 // ----------------------------------------------------------------------------
288
289 LRESULT APIENTRY _EXPORT wxTextCtrlWndProc(HWND hWnd,
290 UINT message,
291 WPARAM wParam,
292 LPARAM lParam)
293 {
294 switch ( message )
295 {
296 case WM_CUT:
297 case WM_COPY:
298 case WM_PASTE:
299 {
300 wxWindow *win = wxFindWinFromHandle((WXHWND)hWnd);
301 if( win->HandleClipboardEvent( message ) )
302 return 0;
303 break;
304 }
305 }
306 return ::CallWindowProc(CASTWNDPROC gs_wndprocEdit, hWnd, message, wParam, lParam);
307 }
308
309 // ----------------------------------------------------------------------------
310 // creation
311 // ----------------------------------------------------------------------------
312
313 void wxTextCtrl::Init()
314 {
315 #if wxUSE_RICHEDIT
316 m_verRichEdit = 0;
317 #endif // wxUSE_RICHEDIT
318
319 #if wxUSE_INKEDIT && wxUSE_RICHEDIT
320 m_isInkEdit = 0;
321 #endif
322
323 m_privateContextMenu = NULL;
324 m_updatesCount = -1;
325 m_isNativeCaretShown = true;
326 }
327
328 wxTextCtrl::~wxTextCtrl()
329 {
330 delete m_privateContextMenu;
331 }
332
333 bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id,
334 const wxString& value,
335 const wxPoint& pos,
336 const wxSize& size,
337 long style,
338 const wxValidator& validator,
339 const wxString& name)
340 {
341 #ifdef __WXWINCE__
342 if ((style & wxBORDER_MASK) == 0)
343 style |= wxBORDER_SIMPLE;
344 #endif
345
346 // base initialization
347 if ( !CreateControl(parent, id, pos, size, style, validator, name) )
348 return false;
349
350 // translate wxWin style flags to MSW ones
351 WXDWORD msStyle = MSWGetCreateWindowFlags();
352
353 // do create the control - either an EDIT or RICHEDIT
354 wxString windowClass = wxT("EDIT");
355
356 #if defined(__POCKETPC__) || defined(__SMARTPHONE__)
357 // A control that capitalizes the first letter
358 if (style & wxTE_CAPITALIZE)
359 windowClass = wxT("CAPEDIT");
360 #endif
361
362 #if wxUSE_RICHEDIT
363 if ( m_windowStyle & wxTE_AUTO_URL )
364 {
365 // automatic URL detection only works in RichEdit 2.0+
366 m_windowStyle |= wxTE_RICH2;
367 }
368
369 if ( m_windowStyle & wxTE_RICH2 )
370 {
371 // using richedit 2.0 implies using wxTE_RICH
372 m_windowStyle |= wxTE_RICH;
373 }
374
375 // we need to load the richedit DLL before creating the rich edit control
376 if ( m_windowStyle & wxTE_RICH )
377 {
378 // versions 2.0, 3.0 and 4.1 of rich edit are mostly compatible with
379 // each other but not with version 1.0, so we have separate flags for
380 // the version 1.0 and the others (and so m_verRichEdit may be 0 (plain
381 // EDIT control), 1 for version 1.0 or 2 for any higher version)
382 //
383 // notice that 1.0 has no Unicode support at all so in Unicode build we
384 // must use another version
385
386 #if wxUSE_UNICODE
387 m_verRichEdit = 2;
388 #else // !wxUSE_UNICODE
389 m_verRichEdit = m_windowStyle & wxTE_RICH2 ? 2 : 1;
390 #endif // wxUSE_UNICODE/!wxUSE_UNICODE
391
392 #if wxUSE_INKEDIT
393 // First test if we can load an ink edit control. Normally, all edit
394 // controls will be made ink edit controls if a tablet environment is
395 // found (or if msw.inkedit != 0 and the InkEd.dll is present).
396 // However, an application can veto ink edit controls by either specifying
397 // msw.inkedit = 0 or by removing wxTE_RICH[2] from the style.
398 //
399 if ((wxSystemSettings::HasFeature(wxSYS_TABLET_PRESENT) || wxSystemOptions::GetOptionInt(wxT("msw.inkedit")) != 0) &&
400 !(wxSystemOptions::HasOption(wxT("msw.inkedit")) && wxSystemOptions::GetOptionInt(wxT("msw.inkedit")) == 0))
401 {
402 if (wxRichEditModule::LoadInkEdit())
403 {
404 windowClass = INKEDIT_CLASS;
405
406 #if wxUSE_INKEDIT && wxUSE_RICHEDIT
407 m_isInkEdit = 1;
408 #endif
409
410 // Fake rich text version for other calls
411 m_verRichEdit = 2;
412 }
413 }
414 #endif
415
416 if (!IsInkEdit())
417 {
418 if ( m_verRichEdit == 2 )
419 {
420 if ( wxRichEditModule::Load(wxRichEditModule::Version_41) )
421 {
422 // yes, class name for version 4.1 really is 5.0
423 windowClass = _T("RICHEDIT50W");
424 }
425 else if ( wxRichEditModule::Load(wxRichEditModule::Version_2or3) )
426 {
427 windowClass = _T("RichEdit20")
428 #if wxUSE_UNICODE
429 _T("W");
430 #else // ANSI
431 _T("A");
432 #endif // Unicode/ANSI
433 }
434 else // failed to load msftedit.dll and riched20.dll
435 {
436 m_verRichEdit = 1;
437 }
438 }
439
440 if ( m_verRichEdit == 1 )
441 {
442 if ( wxRichEditModule::Load(wxRichEditModule::Version_1) )
443 {
444 windowClass = _T("RICHEDIT");
445 }
446 else // failed to load any richedit control DLL
447 {
448 // only give the error msg once if the DLL can't be loaded
449 static bool s_errorGiven = false; // MT ok as only used by GUI
450
451 if ( !s_errorGiven )
452 {
453 wxLogError(_("Impossible to create a rich edit control, using simple text control instead. Please reinstall riched32.dll"));
454
455 s_errorGiven = true;
456 }
457
458 m_verRichEdit = 0;
459 }
460 }
461 } // !useInkEdit
462 }
463 #endif // wxUSE_RICHEDIT
464
465 // we need to turn '\n's into "\r\n"s for the multiline controls
466 wxString valueWin;
467 if ( m_windowStyle & wxTE_MULTILINE )
468 {
469 valueWin = wxTextFile::Translate(value, wxTextFileType_Dos);
470 }
471 else // single line
472 {
473 valueWin = value;
474 }
475
476 if ( !MSWCreateControl(windowClass, msStyle, pos, size, valueWin) )
477 return false;
478
479 #if wxUSE_RICHEDIT
480 if (IsRich())
481 {
482 #if wxUSE_INKEDIT
483 if (IsInkEdit())
484 {
485 // Pass IEM_InsertText (0) as wParam, in order to have the ink always
486 // converted to text.
487 ::SendMessage(GetHwnd(), EM_SETINKINSERTMODE, 0, 0);
488
489 // Make sure the mouse can be used for input
490 ::SendMessage(GetHwnd(), EM_SETUSEMOUSEFORINPUT, 1, 0);
491 }
492 #endif
493
494 // enable the events we're interested in: we want to get EN_CHANGE as
495 // for the normal controls
496 LPARAM mask = ENM_CHANGE;
497
498 if (GetRichVersion() == 1 && !IsInkEdit())
499 {
500 // we also need EN_MSGFILTER for richedit 1.0 for the reasons
501 // explained in its handler
502 mask |= ENM_MOUSEEVENTS;
503
504 // we also need to force the appearance of the vertical scrollbar
505 // initially as otherwise the control doesn't refresh correctly
506 // after resize: but once the vertical scrollbar had been shown
507 // (even if it's subsequently hidden) it does
508 //
509 // this is clearly a bug and for now it has been only noticed under
510 // Windows XP, so if we're sure it works correctly under other
511 // systems we could do this only for XP
512 SetSize(-1, 1); // 1 is small enough to force vert scrollbar
513 SetSize(size);
514 }
515 else if ( m_windowStyle & wxTE_AUTO_URL )
516 {
517 mask |= ENM_LINK;
518
519 ::SendMessage(GetHwnd(), EM_AUTOURLDETECT, TRUE, 0);
520 }
521
522 ::SendMessage(GetHwnd(), EM_SETEVENTMASK, 0, mask);
523 }
524 #endif // wxUSE_RICHEDIT
525
526 gs_wndprocEdit = wxSetWindowProc((HWND)GetHwnd(),
527 wxTextCtrlWndProc);
528
529 return true;
530 }
531
532 // Make sure the window style (etc.) reflects the HWND style (roughly)
533 void wxTextCtrl::AdoptAttributesFromHWND()
534 {
535 wxWindow::AdoptAttributesFromHWND();
536
537 HWND hWnd = GetHwnd();
538 long style = ::GetWindowLong(hWnd, GWL_STYLE);
539
540 // retrieve the style to see whether this is an edit or richedit ctrl
541 #if wxUSE_RICHEDIT
542 wxString classname = wxGetWindowClass(GetHWND());
543
544 if ( classname.IsSameAs(_T("EDIT"), false /* no case */) )
545 {
546 m_verRichEdit = 0;
547 }
548 else // rich edit?
549 {
550 wxChar c;
551 if ( wxSscanf(classname, _T("RichEdit%d0%c"), &m_verRichEdit, &c) != 2 )
552 {
553 wxLogDebug(_T("Unknown edit control '%s'."), classname.c_str());
554
555 m_verRichEdit = 0;
556 }
557 }
558 #endif // wxUSE_RICHEDIT
559
560 if (style & ES_MULTILINE)
561 m_windowStyle |= wxTE_MULTILINE;
562 if (style & ES_PASSWORD)
563 m_windowStyle |= wxTE_PASSWORD;
564 if (style & ES_READONLY)
565 m_windowStyle |= wxTE_READONLY;
566 if (style & ES_WANTRETURN)
567 m_windowStyle |= wxTE_PROCESS_ENTER;
568 if (style & ES_CENTER)
569 m_windowStyle |= wxTE_CENTRE;
570 if (style & ES_RIGHT)
571 m_windowStyle |= wxTE_RIGHT;
572 }
573
574 WXDWORD wxTextCtrl::MSWGetStyle(long style, WXDWORD *exstyle) const
575 {
576 long msStyle = wxControl::MSWGetStyle(style, exstyle);
577
578 // styles which we alaways add by default
579 if ( style & wxTE_MULTILINE )
580 {
581 wxASSERT_MSG( !(style & wxTE_PROCESS_ENTER),
582 wxT("wxTE_PROCESS_ENTER style is ignored for multiline text controls (they always process it)") );
583
584 msStyle |= ES_MULTILINE | ES_WANTRETURN;
585 if ( !(style & wxTE_NO_VSCROLL) )
586 {
587 // always adjust the vertical scrollbar automatically if we have it
588 msStyle |= WS_VSCROLL | ES_AUTOVSCROLL;
589
590 #if wxUSE_RICHEDIT
591 // we have to use this style for the rich edit controls because
592 // without it the vertical scrollbar never appears at all in
593 // richedit 3.0 because of our ECO_NOHIDESEL hack (search for it)
594 if ( style & wxTE_RICH2 )
595 {
596 msStyle |= ES_DISABLENOSCROLL;
597 }
598 #endif // wxUSE_RICHEDIT
599 }
600
601 style |= wxTE_PROCESS_ENTER;
602 }
603 else // !multiline
604 {
605 // there is really no reason to not have this style for single line
606 // text controls
607 msStyle |= ES_AUTOHSCROLL;
608 }
609
610 // note that wxTE_DONTWRAP is the same as wxHSCROLL so if we have a horz
611 // scrollbar, there is no wrapping -- which makes sense
612 if ( style & wxTE_DONTWRAP )
613 {
614 // automatically scroll the control horizontally as necessary
615 //
616 // NB: ES_AUTOHSCROLL is needed for richedit controls or they don't
617 // show horz scrollbar at all, even in spite of WS_HSCROLL, and as
618 // it doesn't seem to do any harm for plain edit controls, add it
619 // always
620 msStyle |= WS_HSCROLL | ES_AUTOHSCROLL;
621 }
622
623 if ( style & wxTE_READONLY )
624 msStyle |= ES_READONLY;
625
626 if ( style & wxTE_PASSWORD )
627 msStyle |= ES_PASSWORD;
628
629 if ( style & wxTE_NOHIDESEL )
630 msStyle |= ES_NOHIDESEL;
631
632 // note that we can't do do "& wxTE_LEFT" as wxTE_LEFT == 0
633 if ( style & wxTE_CENTRE )
634 msStyle |= ES_CENTER;
635 else if ( style & wxTE_RIGHT )
636 msStyle |= ES_RIGHT;
637 else
638 msStyle |= ES_LEFT; // ES_LEFT is 0 as well but for consistency...
639
640 return msStyle;
641 }
642
643 void wxTextCtrl::SetWindowStyleFlag(long style)
644 {
645 #if wxUSE_RICHEDIT
646 // we have to deal with some styles separately because they can't be
647 // changed by simply calling SetWindowLong(GWL_STYLE) but can be changed
648 // using richedit-specific EM_SETOPTIONS
649 if ( IsRich() &&
650 ((style & wxTE_NOHIDESEL) != (GetWindowStyle() & wxTE_NOHIDESEL)) )
651 {
652 bool set = (style & wxTE_NOHIDESEL) != 0;
653
654 ::SendMessage(GetHwnd(), EM_SETOPTIONS, set ? ECOOP_OR : ECOOP_AND,
655 set ? ECO_NOHIDESEL : ~ECO_NOHIDESEL);
656 }
657 #endif // wxUSE_RICHEDIT
658
659 wxControl::SetWindowStyleFlag(style);
660 }
661
662 // ----------------------------------------------------------------------------
663 // set/get the controls text
664 // ----------------------------------------------------------------------------
665
666 bool wxTextCtrl::IsEmpty() const
667 {
668 // this is an optimization for multiline controls containing a lot of text
669 if ( IsMultiLine() && GetNumberOfLines() != 1 )
670 return false;
671
672 return wxTextCtrlBase::IsEmpty();
673 }
674
675 wxString wxTextCtrl::GetValue() const
676 {
677 // range 0..-1 is special for GetRange() and means to retrieve all text
678 return GetRange(0, -1);
679 }
680
681 wxString wxTextCtrl::GetRange(long from, long to) const
682 {
683 wxString str;
684
685 if ( from >= to && to != -1 )
686 {
687 // nothing to retrieve
688 return str;
689 }
690
691 #if wxUSE_RICHEDIT
692 if ( IsRich() )
693 {
694 int len = GetWindowTextLength(GetHwnd());
695 if ( len > from )
696 {
697 if ( to == -1 )
698 to = len;
699
700 #if !wxUSE_UNICODE
701 // we must use EM_STREAMOUT if we don't want to lose all characters
702 // not representable in the current character set (EM_GETTEXTRANGE
703 // simply replaces them with question marks...)
704 if ( GetRichVersion() > 1 )
705 {
706 // we must have some encoding, otherwise any 8bit chars in the
707 // control are simply *lost* (replaced by '?')
708 wxFontEncoding encoding = wxFONTENCODING_SYSTEM;
709
710 wxFont font = m_defaultStyle.GetFont();
711 if ( !font.Ok() )
712 font = GetFont();
713
714 if ( font.Ok() )
715 {
716 encoding = font.GetEncoding();
717 }
718
719 if ( encoding == wxFONTENCODING_SYSTEM )
720 {
721 encoding = wxLocale::GetSystemEncoding();
722 }
723
724 if ( encoding == wxFONTENCODING_SYSTEM )
725 {
726 encoding = wxFONTENCODING_ISO8859_1;
727 }
728
729 str = StreamOut(encoding);
730
731 if ( !str.empty() )
732 {
733 // we have to manually extract the required part, luckily
734 // this is easy in this case as EOL characters in str are
735 // just LFs because we remove CRs in wxRichEditStreamOut
736 str = str.Mid(from, to - from);
737 }
738 }
739
740 // StreamOut() wasn't used or failed, try to do it in normal way
741 if ( str.empty() )
742 #endif // !wxUSE_UNICODE
743 {
744 // alloc one extra WORD as needed by the control
745 wxStringBuffer tmp(str, ++len);
746 wxChar *p = tmp;
747
748 TEXTRANGE textRange;
749 textRange.chrg.cpMin = from;
750 textRange.chrg.cpMax = to;
751 textRange.lpstrText = p;
752
753 (void)::SendMessage(GetHwnd(), EM_GETTEXTRANGE,
754 0, (LPARAM)&textRange);
755
756 if ( m_verRichEdit > 1 )
757 {
758 // RichEdit 2.0 uses just CR ('\r') for the
759 // newlines which is neither Unix nor Windows
760 // style - convert it to something reasonable
761 for ( ; *p; p++ )
762 {
763 if ( *p == _T('\r') )
764 *p = _T('\n');
765 }
766 }
767 }
768
769 if ( m_verRichEdit == 1 )
770 {
771 // convert to the canonical form - see comment below
772 str = wxTextFile::Translate(str, wxTextFileType_Unix);
773 }
774 }
775 //else: no text at all, leave the string empty
776 }
777 else
778 #endif // wxUSE_RICHEDIT
779 {
780 // retrieve all text
781 str = wxGetWindowText(GetHWND());
782
783 // need only a range?
784 if ( from < to )
785 {
786 str = str.Mid(from, to - from);
787 }
788
789 // WM_GETTEXT uses standard DOS CR+LF (\r\n) convention - convert to the
790 // canonical one (same one as above) for consistency with the other kinds
791 // of controls and, more importantly, with the other ports
792 str = wxTextFile::Translate(str, wxTextFileType_Unix);
793 }
794
795 return str;
796 }
797
798 void wxTextCtrl::DoSetValue(const wxString& value, int flags)
799 {
800 // if the text is long enough, it's faster to just set it instead of first
801 // comparing it with the old one (chances are that it will be different
802 // anyhow, this comparison is there to avoid flicker for small single-line
803 // edit controls mostly)
804 if ( (value.length() > 0x400) || (value != GetValue()) )
805 {
806 DoWriteText(value, flags /* doesn't include SelectionOnly here */);
807
808 // mark the control as being not dirty - we changed its text, not the
809 // user
810 DiscardEdits();
811
812 // for compatibility, don't move the cursor when doing SetValue()
813 SetInsertionPoint(0);
814 }
815 else // same text
816 {
817 // still reset the modified flag even if the value didn't really change
818 // because now it comes from the program and not the user (and do it
819 // before generating the event so that the event handler could get the
820 // expected value from IsModified())
821 DiscardEdits();
822
823 // still send an event for consistency
824 if (flags & SetValue_SendEvent)
825 SendUpdateEvent();
826 }
827 }
828
829 #if wxUSE_RICHEDIT && (!wxUSE_UNICODE || wxUSE_UNICODE_MSLU)
830
831 // TODO: using memcpy() would improve performance a lot for big amounts of text
832
833 DWORD CALLBACK
834 wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb)
835 {
836 *pcb = 0;
837
838 const wchar_t ** const ppws = (const wchar_t **)dwCookie;
839
840 wchar_t *wbuf = (wchar_t *)buf;
841 const wchar_t *wpc = *ppws;
842 while ( cb && *wpc )
843 {
844 *wbuf++ = *wpc++;
845
846 cb -= sizeof(wchar_t);
847 (*pcb) += sizeof(wchar_t);
848 }
849
850 *ppws = wpc;
851
852 return 0;
853 }
854
855 // helper struct used to pass parameters from wxTextCtrl to wxRichEditStreamOut
856 struct wxStreamOutData
857 {
858 wchar_t *wpc;
859 size_t len;
860 };
861
862 DWORD CALLBACK
863 wxRichEditStreamOut(DWORD_PTR dwCookie, BYTE *buf, LONG cb, LONG *pcb)
864 {
865 *pcb = 0;
866
867 wxStreamOutData *data = (wxStreamOutData *)dwCookie;
868
869 const wchar_t *wbuf = (const wchar_t *)buf;
870 wchar_t *wpc = data->wpc;
871 while ( cb )
872 {
873 wchar_t wch = *wbuf++;
874
875 // turn "\r\n" into "\n" on the fly
876 if ( wch != L'\r' )
877 *wpc++ = wch;
878 else
879 data->len--;
880
881 cb -= sizeof(wchar_t);
882 (*pcb) += sizeof(wchar_t);
883 }
884
885 data->wpc = wpc;
886
887 return 0;
888 }
889
890
891 #if wxUSE_UNICODE_MSLU
892 #define UNUSED_IF_MSLU(param)
893 #else
894 #define UNUSED_IF_MSLU(param) param
895 #endif
896
897 bool
898 wxTextCtrl::StreamIn(const wxString& value,
899 wxFontEncoding UNUSED_IF_MSLU(encoding),
900 bool selectionOnly)
901 {
902 #if wxUSE_UNICODE_MSLU
903 const wchar_t *wpc = value.c_str();
904 #else // !wxUSE_UNICODE_MSLU
905 wxCSConv conv(encoding);
906
907 const size_t len = conv.MB2WC(NULL, value, value.length());
908
909 #if wxUSE_WCHAR_T
910 wxWCharBuffer wchBuf(len);
911 wchar_t *wpc = wchBuf.data();
912 #else
913 wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
914 wchar_t *wpc = wchBuf;
915 #endif
916
917 conv.MB2WC(wpc, value, value.length());
918 #endif // wxUSE_UNICODE_MSLU
919
920 // finally, stream it in the control
921 EDITSTREAM eds;
922 wxZeroMemory(eds);
923 eds.dwCookie = (DWORD)&wpc;
924 // the cast below is needed for broken (very) old mingw32 headers
925 eds.pfnCallback = (EDITSTREAMCALLBACK)wxRichEditStreamIn;
926
927 // same problem as in DoWriteText(): we can get multiple events here
928 UpdatesCountFilter ucf(m_updatesCount);
929
930 ::SendMessage(GetHwnd(), EM_STREAMIN,
931 SF_TEXT |
932 SF_UNICODE |
933 (selectionOnly ? SFF_SELECTION : 0),
934 (LPARAM)&eds);
935
936 // It's okay for EN_UPDATE to not be sent if the selection is empty and
937 // the text is empty, otherwise warn the programmer about it.
938 wxASSERT_MSG( ucf.GotUpdate() || ( !HasSelection() && value.empty() ),
939 _T("EM_STREAMIN didn't send EN_UPDATE?") );
940
941 if ( eds.dwError )
942 {
943 wxLogLastError(_T("EM_STREAMIN"));
944 }
945
946 #if !wxUSE_WCHAR_T
947 free(wchBuf);
948 #endif // !wxUSE_WCHAR_T
949
950 return true;
951 }
952
953 #if !wxUSE_UNICODE_MSLU
954
955 wxString
956 wxTextCtrl::StreamOut(wxFontEncoding encoding, bool selectionOnly) const
957 {
958 wxString out;
959
960 const int len = GetWindowTextLength(GetHwnd());
961
962 #if wxUSE_WCHAR_T
963 wxWCharBuffer wchBuf(len);
964 wchar_t *wpc = wchBuf.data();
965 #else
966 wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
967 wchar_t *wpc = wchBuf;
968 #endif
969
970 wxStreamOutData data;
971 data.wpc = wpc;
972 data.len = len;
973
974 EDITSTREAM eds;
975 wxZeroMemory(eds);
976 eds.dwCookie = (DWORD)&data;
977 eds.pfnCallback = wxRichEditStreamOut;
978
979 ::SendMessage
980 (
981 GetHwnd(),
982 EM_STREAMOUT,
983 SF_TEXT | SF_UNICODE | (selectionOnly ? SFF_SELECTION : 0),
984 (LPARAM)&eds
985 );
986
987 if ( eds.dwError )
988 {
989 wxLogLastError(_T("EM_STREAMOUT"));
990 }
991 else // streamed out ok
992 {
993 // NUL-terminate the string because its length could have been
994 // decreased by wxRichEditStreamOut
995 *(wchBuf.data() + data.len) = L'\0';
996
997 // now convert to the given encoding (this is a possibly lossful
998 // conversion but what else can we do)
999 wxCSConv conv(encoding);
1000 size_t lenNeeded = conv.WC2MB(NULL, wchBuf, 0);
1001 if ( lenNeeded++ )
1002 {
1003 conv.WC2MB(wxStringBuffer(out, lenNeeded), wchBuf, lenNeeded);
1004 }
1005 }
1006
1007 #if !wxUSE_WCHAR_T
1008 free(wchBuf);
1009 #endif // !wxUSE_WCHAR_T
1010
1011 return out;
1012 }
1013
1014 #endif // !wxUSE_UNICODE_MSLU
1015
1016 #endif // wxUSE_RICHEDIT
1017
1018 void wxTextCtrl::WriteText(const wxString& value)
1019 {
1020 DoWriteText(value);
1021 }
1022
1023 void wxTextCtrl::DoWriteText(const wxString& value, int flags)
1024 {
1025 bool selectionOnly = (flags & SetValue_SelectionOnly) != 0;
1026 wxString valueDos;
1027 if ( m_windowStyle & wxTE_MULTILINE )
1028 valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
1029 else
1030 valueDos = value;
1031
1032 #if wxUSE_RICHEDIT
1033 // there are several complications with the rich edit controls here
1034 bool done = false;
1035 if ( IsRich() )
1036 {
1037 // first, ensure that the new text will be in the default style
1038 if ( !m_defaultStyle.IsDefault() )
1039 {
1040 long start, end;
1041 GetSelection(&start, &end);
1042 SetStyle(start, end, m_defaultStyle);
1043 }
1044
1045 #if wxUSE_UNICODE_MSLU
1046 // RichEdit doesn't have Unicode version of EM_REPLACESEL on Win9x,
1047 // but EM_STREAMIN works
1048 if ( wxUsingUnicowsDll() && GetRichVersion() > 1 )
1049 {
1050 done = StreamIn(valueDos, wxFONTENCODING_SYSTEM, selectionOnly);
1051 }
1052 #endif // wxUSE_UNICODE_MSLU
1053
1054 #if !wxUSE_UNICODE
1055 // next check if the text we're inserting must be shown in a non
1056 // default charset -- this only works for RichEdit > 1.0
1057 if ( GetRichVersion() > 1 )
1058 {
1059 wxFont font = m_defaultStyle.GetFont();
1060 if ( !font.Ok() )
1061 font = GetFont();
1062
1063 if ( font.Ok() )
1064 {
1065 wxFontEncoding encoding = font.GetEncoding();
1066 if ( encoding != wxFONTENCODING_SYSTEM )
1067 {
1068 // we have to use EM_STREAMIN to force richedit control 2.0+
1069 // to show any text in the non default charset -- otherwise
1070 // it thinks it knows better than we do and always shows it
1071 // in the default one
1072 done = StreamIn(valueDos, encoding, selectionOnly);
1073 }
1074 }
1075 }
1076 #endif // !wxUSE_UNICODE
1077 }
1078
1079 if ( !done )
1080 #endif // wxUSE_RICHEDIT
1081 {
1082 // in some cases we get 2 EN_CHANGE notifications after the SendMessage
1083 // call (this happens for plain EDITs with EM_REPLACESEL and under some
1084 // -- undetermined -- conditions with rich edit) and sometimes we don't
1085 // get any events at all (plain EDIT with WM_SETTEXT), so ensure that
1086 // we generate exactly one of them by ignoring all but the first one in
1087 // SendUpdateEvent() and generating one ourselves if we hadn't got any
1088 // notifications from Windows
1089 if ( !(flags & SetValue_SendEvent) )
1090 m_updatesCount = -2; // suppress any update event
1091
1092 UpdatesCountFilter ucf(m_updatesCount);
1093
1094 ::SendMessage(GetHwnd(), selectionOnly ? EM_REPLACESEL : WM_SETTEXT,
1095 // EM_REPLACESEL takes 1 to indicate the operation should be redoable
1096 selectionOnly ? 1 : 0, (LPARAM)valueDos.c_str());
1097
1098 if ( !ucf.GotUpdate() && (flags & SetValue_SendEvent) )
1099 {
1100 SendUpdateEvent();
1101 }
1102 }
1103 }
1104
1105 void wxTextCtrl::AppendText(const wxString& text)
1106 {
1107 SetInsertionPointEnd();
1108
1109 WriteText(text);
1110
1111 #if wxUSE_RICHEDIT
1112 // don't do this if we're frozen, saves some time
1113 if ( !IsFrozen() && IsMultiLine() && GetRichVersion() > 1 )
1114 {
1115 // setting the caret to the end and showing it simply doesn't work for
1116 // RichEdit 2.0 -- force it to still do what we want
1117 ::SendMessage(GetHwnd(), EM_LINESCROLL, 0, GetNumberOfLines());
1118 }
1119 #endif // wxUSE_RICHEDIT
1120 }
1121
1122 void wxTextCtrl::Clear()
1123 {
1124 ::SetWindowText(GetHwnd(), wxEmptyString);
1125
1126 #if wxUSE_RICHEDIT
1127 if ( !IsRich() )
1128 #endif // wxUSE_RICHEDIT
1129 {
1130 // rich edit controls send EN_UPDATE from WM_SETTEXT handler themselves
1131 // but the normal ones don't -- make Clear() behaviour consistent by
1132 // always sending this event
1133
1134 // Windows already sends an update event for single-line
1135 // controls.
1136 if ( m_windowStyle & wxTE_MULTILINE )
1137 SendUpdateEvent();
1138 }
1139 }
1140
1141 #ifdef __WIN32__
1142
1143 bool wxTextCtrl::EmulateKeyPress(const wxKeyEvent& event)
1144 {
1145 SetFocus();
1146
1147 size_t lenOld = GetValue().length();
1148
1149 wxUint32 code = event.GetRawKeyCode();
1150 ::keybd_event((BYTE)code, 0, 0 /* key press */, 0);
1151 ::keybd_event((BYTE)code, 0, KEYEVENTF_KEYUP, 0);
1152
1153 // assume that any alphanumeric key changes the total number of characters
1154 // in the control - this should work in 99% of cases
1155 return GetValue().length() != lenOld;
1156 }
1157
1158 #endif // __WIN32__
1159
1160 // ----------------------------------------------------------------------------
1161 // Clipboard operations
1162 // ----------------------------------------------------------------------------
1163
1164 void wxTextCtrl::Copy()
1165 {
1166 if (CanCopy())
1167 {
1168 ::SendMessage(GetHwnd(), WM_COPY, 0, 0L);
1169 }
1170 }
1171
1172 void wxTextCtrl::Cut()
1173 {
1174 if (CanCut())
1175 {
1176 ::SendMessage(GetHwnd(), WM_CUT, 0, 0L);
1177 }
1178 }
1179
1180 void wxTextCtrl::Paste()
1181 {
1182 if (CanPaste())
1183 {
1184 ::SendMessage(GetHwnd(), WM_PASTE, 0, 0L);
1185 }
1186 }
1187
1188 bool wxTextCtrl::HasSelection() const
1189 {
1190 long from, to;
1191 GetSelection(&from, &to);
1192 return from != to;
1193 }
1194
1195 bool wxTextCtrl::CanCopy() const
1196 {
1197 // Can copy if there's a selection
1198 return HasSelection();
1199 }
1200
1201 bool wxTextCtrl::CanCut() const
1202 {
1203 return CanCopy() && IsEditable();
1204 }
1205
1206 bool wxTextCtrl::CanPaste() const
1207 {
1208 if ( !IsEditable() )
1209 return false;
1210
1211 #if wxUSE_RICHEDIT
1212 if ( IsRich() )
1213 {
1214 UINT cf = 0; // 0 == any format
1215
1216 return ::SendMessage(GetHwnd(), EM_CANPASTE, cf, 0) != 0;
1217 }
1218 #endif // wxUSE_RICHEDIT
1219
1220 // Standard edit control: check for straight text on clipboard
1221 if ( !::OpenClipboard(GetHwndOf(wxTheApp->GetTopWindow())) )
1222 return false;
1223
1224 bool isTextAvailable = ::IsClipboardFormatAvailable(CF_TEXT) != 0;
1225 ::CloseClipboard();
1226
1227 return isTextAvailable;
1228 }
1229
1230 // ----------------------------------------------------------------------------
1231 // Accessors
1232 // ----------------------------------------------------------------------------
1233
1234 void wxTextCtrl::SetEditable(bool editable)
1235 {
1236 HWND hWnd = GetHwnd();
1237 ::SendMessage(hWnd, EM_SETREADONLY, (WPARAM)!editable, (LPARAM)0L);
1238 }
1239
1240 void wxTextCtrl::SetInsertionPoint(long pos)
1241 {
1242 DoSetSelection(pos, pos);
1243 }
1244
1245 void wxTextCtrl::SetInsertionPointEnd()
1246 {
1247 // we must not do anything if the caret is already there because calling
1248 // SetInsertionPoint() thaws the controls if Freeze() had been called even
1249 // if it doesn't actually move the caret anywhere and so the simple fact of
1250 // doing it results in horrible flicker when appending big amounts of text
1251 // to the control in a few chunks (see DoAddText() test in the text sample)
1252 const wxTextPos lastPosition = GetLastPosition();
1253 if ( GetInsertionPoint() == lastPosition )
1254 {
1255 return;
1256 }
1257
1258 long pos;
1259
1260 #if wxUSE_RICHEDIT
1261 if ( m_verRichEdit == 1 )
1262 {
1263 // we don't have to waste time calling GetLastPosition() in this case
1264 pos = -1;
1265 }
1266 else // !RichEdit 1.0
1267 #endif // wxUSE_RICHEDIT
1268 {
1269 pos = lastPosition;
1270 }
1271
1272 SetInsertionPoint(pos);
1273 }
1274
1275 long wxTextCtrl::GetInsertionPoint() const
1276 {
1277 #if wxUSE_RICHEDIT
1278 if ( IsRich() )
1279 {
1280 CHARRANGE range;
1281 range.cpMin = 0;
1282 range.cpMax = 0;
1283 ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
1284 return range.cpMin;
1285 }
1286 #endif // wxUSE_RICHEDIT
1287
1288 DWORD Pos = (DWORD)::SendMessage(GetHwnd(), EM_GETSEL, 0, 0L);
1289 return Pos & 0xFFFF;
1290 }
1291
1292 wxTextPos wxTextCtrl::GetLastPosition() const
1293 {
1294 int numLines = GetNumberOfLines();
1295 long posStartLastLine = XYToPosition(0, numLines - 1);
1296
1297 long lenLastLine = GetLengthOfLineContainingPos(posStartLastLine);
1298
1299 return posStartLastLine + lenLastLine;
1300 }
1301
1302 // If the return values from and to are the same, there is no
1303 // selection.
1304 void wxTextCtrl::GetSelection(long* from, long* to) const
1305 {
1306 #if wxUSE_RICHEDIT
1307 if ( IsRich() )
1308 {
1309 CHARRANGE charRange;
1310 ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &charRange);
1311
1312 *from = charRange.cpMin;
1313 *to = charRange.cpMax;
1314 }
1315 else
1316 #endif // !wxUSE_RICHEDIT
1317 {
1318 DWORD dwStart, dwEnd;
1319 ::SendMessage(GetHwnd(), EM_GETSEL, (WPARAM)&dwStart, (LPARAM)&dwEnd);
1320
1321 *from = dwStart;
1322 *to = dwEnd;
1323 }
1324 }
1325
1326 bool wxTextCtrl::IsEditable() const
1327 {
1328 // strangely enough, we may be called before the control is created: our
1329 // own Create() calls MSWGetStyle() which calls AcceptsFocus() which calls
1330 // us
1331 if ( !m_hWnd )
1332 return true;
1333
1334 long style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1335
1336 return (style & ES_READONLY) == 0;
1337 }
1338
1339 // ----------------------------------------------------------------------------
1340 // selection
1341 // ----------------------------------------------------------------------------
1342
1343 void wxTextCtrl::SetSelection(long from, long to)
1344 {
1345 // if from and to are both -1, it means (in wxWidgets) that all text should
1346 // be selected - translate into Windows convention
1347 if ( (from == -1) && (to == -1) )
1348 {
1349 from = 0;
1350 to = -1;
1351 }
1352
1353 DoSetSelection(from, to);
1354 }
1355
1356 void wxTextCtrl::DoSetSelection(long from, long to, bool scrollCaret)
1357 {
1358 HWND hWnd = GetHwnd();
1359
1360 #if wxUSE_RICHEDIT
1361 if ( IsRich() )
1362 {
1363 CHARRANGE range;
1364 range.cpMin = from;
1365 range.cpMax = to;
1366 ::SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM) &range);
1367 }
1368 else
1369 #endif // wxUSE_RICHEDIT
1370 {
1371 ::SendMessage(hWnd, EM_SETSEL, (WPARAM)from, (LPARAM)to);
1372 }
1373
1374 if ( scrollCaret && !IsFrozen() )
1375 {
1376 #if wxUSE_RICHEDIT
1377 // richedit 3.0 (i.e. the version living in riched20.dll distributed
1378 // with Windows 2000 and beyond) doesn't honour EM_SCROLLCARET when
1379 // emulating richedit 2.0 unless the control has focus or ECO_NOHIDESEL
1380 // option is set (but it does work ok in richedit 1.0 mode...)
1381 //
1382 // so to make it work we either need to give focus to it here which
1383 // will probably create many problems (dummy focus events; window
1384 // containing the text control being brought to foreground
1385 // unexpectedly; ...) or to temporarily set ECO_NOHIDESEL which may
1386 // create other problems too -- and in fact it does because if we turn
1387 // on/off this style while appending the text to the control, the
1388 // vertical scrollbar never appears in it even if we append tons of
1389 // text and to work around this the only solution I found was to use
1390 // ES_DISABLENOSCROLL
1391 //
1392 // this is very ugly but I don't see any other way to make this work
1393 long style = 0;
1394 if ( GetRichVersion() > 1 )
1395 {
1396 if ( !HasFlag(wxTE_NOHIDESEL) )
1397 {
1398 // setting ECO_NOHIDESEL also sets WS_VISIBLE and possibly
1399 // others, remember the style so we can reset it later if needed
1400 style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1401 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1402 ECOOP_OR, ECO_NOHIDESEL);
1403 }
1404 //else: everything is already ok
1405 }
1406 #endif // wxUSE_RICHEDIT
1407
1408 ::SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
1409
1410 #if wxUSE_RICHEDIT
1411 // restore ECO_NOHIDESEL if we changed it
1412 if ( GetRichVersion() > 1 && !HasFlag(wxTE_NOHIDESEL) )
1413 {
1414 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1415 ECOOP_AND, ~ECO_NOHIDESEL);
1416 if ( style != ::GetWindowLong(GetHwnd(), GWL_STYLE) )
1417 ::SetWindowLong(GetHwnd(), GWL_STYLE, style);
1418 }
1419 #endif // wxUSE_RICHEDIT
1420 }
1421 }
1422
1423 // ----------------------------------------------------------------------------
1424 // Working with files
1425 // ----------------------------------------------------------------------------
1426
1427 bool wxTextCtrl::DoLoadFile(const wxString& file, int fileType)
1428 {
1429 if ( wxTextCtrlBase::DoLoadFile(file, fileType) )
1430 {
1431 // update the size limit if needed
1432 AdjustSpaceLimit();
1433
1434 return true;
1435 }
1436
1437 return false;
1438 }
1439
1440 // ----------------------------------------------------------------------------
1441 // Editing
1442 // ----------------------------------------------------------------------------
1443
1444 void wxTextCtrl::Replace(long from, long to, const wxString& value)
1445 {
1446 // Set selection and remove it
1447 DoSetSelection(from, to, false /* don't scroll caret into view */);
1448
1449 DoWriteText(value);
1450 }
1451
1452 void wxTextCtrl::Remove(long from, long to)
1453 {
1454 Replace(from, to, wxEmptyString);
1455 }
1456
1457 bool wxTextCtrl::IsModified() const
1458 {
1459 return ::SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0;
1460 }
1461
1462 void wxTextCtrl::MarkDirty()
1463 {
1464 ::SendMessage(GetHwnd(), EM_SETMODIFY, TRUE, 0L);
1465 }
1466
1467 void wxTextCtrl::DiscardEdits()
1468 {
1469 ::SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0L);
1470 }
1471
1472 int wxTextCtrl::GetNumberOfLines() const
1473 {
1474 return (int)::SendMessage(GetHwnd(), EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0);
1475 }
1476
1477 // ----------------------------------------------------------------------------
1478 // Positions <-> coords
1479 // ----------------------------------------------------------------------------
1480
1481 long wxTextCtrl::XYToPosition(long x, long y) const
1482 {
1483 // This gets the char index for the _beginning_ of this line
1484 long charIndex = ::SendMessage(GetHwnd(), EM_LINEINDEX, (WPARAM)y, (LPARAM)0);
1485
1486 return charIndex + x;
1487 }
1488
1489 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
1490 {
1491 HWND hWnd = GetHwnd();
1492
1493 // This gets the line number containing the character
1494 long lineNo;
1495 #if wxUSE_RICHEDIT
1496 if ( IsRich() )
1497 {
1498 lineNo = ::SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, (LPARAM)pos);
1499 }
1500 else
1501 #endif // wxUSE_RICHEDIT
1502 {
1503 lineNo = ::SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, 0);
1504 }
1505
1506 if ( lineNo == -1 )
1507 {
1508 // no such line
1509 return false;
1510 }
1511
1512 // This gets the char index for the _beginning_ of this line
1513 long charIndex = ::SendMessage(hWnd, EM_LINEINDEX, (WPARAM)lineNo, (LPARAM)0);
1514 if ( charIndex == -1 )
1515 {
1516 return false;
1517 }
1518
1519 // The X position must therefore be the different between pos and charIndex
1520 if ( x )
1521 *x = pos - charIndex;
1522 if ( y )
1523 *y = lineNo;
1524
1525 return true;
1526 }
1527
1528 wxTextCtrlHitTestResult
1529 wxTextCtrl::HitTest(const wxPoint& pt, long *posOut) const
1530 {
1531 // first get the position from Windows
1532 LPARAM lParam;
1533
1534 #if wxUSE_RICHEDIT
1535 POINTL ptl;
1536 if ( IsRich() )
1537 {
1538 // for rich edit controls the position is passed iva the struct fields
1539 ptl.x = pt.x;
1540 ptl.y = pt.y;
1541 lParam = (LPARAM)&ptl;
1542 }
1543 else
1544 #endif // wxUSE_RICHEDIT
1545 {
1546 // for the plain ones, we are limited to 16 bit positions which are
1547 // combined in a single 32 bit value
1548 lParam = MAKELPARAM(pt.x, pt.y);
1549 }
1550
1551 LRESULT pos = ::SendMessage(GetHwnd(), EM_CHARFROMPOS, 0, lParam);
1552
1553 if ( pos == -1 )
1554 {
1555 // this seems to indicate an error...
1556 return wxTE_HT_UNKNOWN;
1557 }
1558
1559 #if wxUSE_RICHEDIT
1560 if ( !IsRich() )
1561 #endif // wxUSE_RICHEDIT
1562 {
1563 // for plain EDIT controls the higher word contains something else
1564 pos = LOWORD(pos);
1565 }
1566
1567
1568 // next determine where it is relatively to our point: EM_CHARFROMPOS
1569 // always returns the closest character but we need to be more precise, so
1570 // double check that we really are where it pretends
1571 POINTL ptReal;
1572
1573 #if wxUSE_RICHEDIT
1574 // FIXME: we need to distinguish between richedit 2 and 3 here somehow but
1575 // we don't know how to do it
1576 if ( IsRich() )
1577 {
1578 ::SendMessage(GetHwnd(), EM_POSFROMCHAR, (WPARAM)&ptReal, pos);
1579 }
1580 else
1581 #endif // wxUSE_RICHEDIT
1582 {
1583 LRESULT lRc = ::SendMessage(GetHwnd(), EM_POSFROMCHAR, pos, 0);
1584
1585 if ( lRc == -1 )
1586 {
1587 // this is apparently returned when pos corresponds to the last
1588 // position
1589 ptReal.x =
1590 ptReal.y = 0;
1591 }
1592 else
1593 {
1594 ptReal.x = LOWORD(lRc);
1595 ptReal.y = HIWORD(lRc);
1596 }
1597 }
1598
1599 wxTextCtrlHitTestResult rc;
1600
1601 if ( pt.y > ptReal.y + GetCharHeight() )
1602 rc = wxTE_HT_BELOW;
1603 else if ( pt.x > ptReal.x + GetCharWidth() )
1604 rc = wxTE_HT_BEYOND;
1605 else
1606 rc = wxTE_HT_ON_TEXT;
1607
1608 if ( posOut )
1609 *posOut = pos;
1610
1611 return rc;
1612 }
1613
1614 // ----------------------------------------------------------------------------
1615 //
1616 // ----------------------------------------------------------------------------
1617
1618 void wxTextCtrl::ShowPosition(long pos)
1619 {
1620 HWND hWnd = GetHwnd();
1621
1622 // To scroll to a position, we pass the number of lines and characters
1623 // to scroll *by*. This means that we need to:
1624 // (1) Find the line position of the current line.
1625 // (2) Find the line position of pos.
1626 // (3) Scroll by (pos - current).
1627 // For now, ignore the horizontal scrolling.
1628
1629 // Is this where scrolling is relative to - the line containing the caret?
1630 // Or is the first visible line??? Try first visible line.
1631 // int currentLineLineNo1 = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)-1, (LPARAM)0L);
1632
1633 int currentLineLineNo = (int)::SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, (WPARAM)0, (LPARAM)0L);
1634
1635 int specifiedLineLineNo = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, (LPARAM)0L);
1636
1637 int linesToScroll = specifiedLineLineNo - currentLineLineNo;
1638
1639 if (linesToScroll != 0)
1640 (void)::SendMessage(hWnd, EM_LINESCROLL, (WPARAM)0, (LPARAM)linesToScroll);
1641 }
1642
1643 long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const
1644 {
1645 return ::SendMessage(GetHwnd(), EM_LINELENGTH, (WPARAM)pos, 0);
1646 }
1647
1648 int wxTextCtrl::GetLineLength(long lineNo) const
1649 {
1650 long pos = XYToPosition(0, lineNo);
1651
1652 return GetLengthOfLineContainingPos(pos);
1653 }
1654
1655 wxString wxTextCtrl::GetLineText(long lineNo) const
1656 {
1657 size_t len = (size_t)GetLineLength(lineNo) + 1;
1658
1659 // there must be at least enough place for the length WORD in the
1660 // buffer
1661 len += sizeof(WORD);
1662
1663 wxString str;
1664 {
1665 wxStringBufferLength tmp(str, len);
1666 wxChar *buf = tmp;
1667
1668 *(WORD *)buf = (WORD)len;
1669 len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf);
1670
1671 #if wxUSE_RICHEDIT
1672 if ( IsRich() )
1673 {
1674 // remove the '\r' returned by the rich edit control, the user code
1675 // should never see it
1676 if ( buf[len - 2] == _T('\r') && buf[len - 1] == _T('\n') )
1677 {
1678 buf[len - 2] = _T('\n');
1679 len--;
1680 }
1681 }
1682 #endif // wxUSE_RICHEDIT
1683
1684 // remove the '\n' at the end, if any (this is how this function is
1685 // supposed to work according to the docs)
1686 if ( buf[len - 1] == _T('\n') )
1687 {
1688 len--;
1689 }
1690
1691 buf[len] = 0;
1692 tmp.SetLength(len);
1693 }
1694
1695 return str;
1696 }
1697
1698 void wxTextCtrl::SetMaxLength(unsigned long len)
1699 {
1700 #if wxUSE_RICHEDIT
1701 if ( IsRich() )
1702 {
1703 ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, len ? len : 0x7fffffff);
1704 }
1705 else
1706 #endif // wxUSE_RICHEDIT
1707 {
1708 if ( len >= 0xffff )
1709 {
1710 // this will set it to a platform-dependent maximum (much more
1711 // than 64Kb under NT)
1712 len = 0;
1713 }
1714
1715 ::SendMessage(GetHwnd(), EM_LIMITTEXT, len, 0);
1716 }
1717 }
1718
1719 // ----------------------------------------------------------------------------
1720 // Undo/redo
1721 // ----------------------------------------------------------------------------
1722
1723 void wxTextCtrl::Undo()
1724 {
1725 if (CanUndo())
1726 {
1727 ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1728 }
1729 }
1730
1731 void wxTextCtrl::Redo()
1732 {
1733 if (CanRedo())
1734 {
1735 #if wxUSE_RICHEDIT
1736 if (GetRichVersion() > 1)
1737 ::SendMessage(GetHwnd(), EM_REDO, 0, 0);
1738 else
1739 #endif
1740 // Same as Undo, since Undo undoes the undo, i.e. a redo.
1741 ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1742 }
1743 }
1744
1745 bool wxTextCtrl::CanUndo() const
1746 {
1747 return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1748 }
1749
1750 bool wxTextCtrl::CanRedo() const
1751 {
1752 #if wxUSE_RICHEDIT
1753 if (GetRichVersion() > 1)
1754 return ::SendMessage(GetHwnd(), EM_CANREDO, 0, 0) != 0;
1755 else
1756 #endif
1757 return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1758 }
1759
1760 // ----------------------------------------------------------------------------
1761 // caret handling (Windows only)
1762 // ----------------------------------------------------------------------------
1763
1764 bool wxTextCtrl::ShowNativeCaret(bool show)
1765 {
1766 if ( show != m_isNativeCaretShown )
1767 {
1768 if ( !(show ? ::ShowCaret(GetHwnd()) : ::HideCaret(GetHwnd())) )
1769 {
1770 // not an error, may simply indicate that it's not shown/hidden
1771 // yet (i.e. it had been hidden/showh 2 times before)
1772 return false;
1773 }
1774
1775 m_isNativeCaretShown = show;
1776 }
1777
1778 return true;
1779 }
1780
1781 // ----------------------------------------------------------------------------
1782 // implemenation details
1783 // ----------------------------------------------------------------------------
1784
1785 void wxTextCtrl::Command(wxCommandEvent & event)
1786 {
1787 SetValue(event.GetString());
1788 ProcessCommand (event);
1789 }
1790
1791 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
1792 {
1793 // By default, load the first file into the text window.
1794 if (event.GetNumberOfFiles() > 0)
1795 {
1796 LoadFile(event.GetFiles()[0]);
1797 }
1798 }
1799
1800 // ----------------------------------------------------------------------------
1801 // kbd input processing
1802 // ----------------------------------------------------------------------------
1803
1804 bool wxTextCtrl::MSWShouldPreProcessMessage(WXMSG* msg)
1805 {
1806 // check for our special keys here: if we don't do it and the parent frame
1807 // uses them as accelerators, they wouldn't work at all, so we disable
1808 // usual preprocessing for them
1809 if ( msg->message == WM_KEYDOWN )
1810 {
1811 const WPARAM vkey = msg->wParam;
1812 if ( HIWORD(msg->lParam) & KF_ALTDOWN )
1813 {
1814 // Alt-Backspace is accelerator for "Undo"
1815 if ( vkey == VK_BACK )
1816 return false;
1817 }
1818 else // no Alt
1819 {
1820 // we want to process some Ctrl-foo and Shift-bar but no key
1821 // combinations without either Ctrl or Shift nor with both of them
1822 // pressed
1823 const int ctrl = wxIsCtrlDown(),
1824 shift = wxIsShiftDown();
1825 switch ( ctrl + shift )
1826 {
1827 default:
1828 wxFAIL_MSG( _T("how many modifiers have we got?") );
1829 // fall through
1830
1831 case 0:
1832 if ( IsMultiLine() && vkey == VK_RETURN )
1833 return false;
1834 // fall through
1835 case 2:
1836 break;
1837
1838 case 1:
1839 // either Ctrl or Shift pressed
1840 if ( ctrl )
1841 {
1842 switch ( vkey )
1843 {
1844 case 'C':
1845 case 'V':
1846 case 'X':
1847 case VK_INSERT:
1848 case VK_DELETE:
1849 case VK_HOME:
1850 case VK_END:
1851 return false;
1852 }
1853 }
1854 else // Shift is pressed
1855 {
1856 if ( vkey == VK_INSERT || vkey == VK_DELETE )
1857 return false;
1858 }
1859 }
1860 }
1861 }
1862
1863 return wxControl::MSWShouldPreProcessMessage(msg);
1864 }
1865
1866 void wxTextCtrl::OnChar(wxKeyEvent& event)
1867 {
1868 switch ( event.GetKeyCode() )
1869 {
1870 case WXK_RETURN:
1871 {
1872 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1873 InitCommandEvent(event);
1874 event.SetString(GetValue());
1875 if ( GetEventHandler()->ProcessEvent(event) )
1876 if ( !HasFlag(wxTE_MULTILINE) )
1877 return;
1878 //else: multiline controls need Enter for themselves
1879 }
1880 break;
1881
1882 case WXK_TAB:
1883 // ok, so this is getting absolutely ridiculous but I don't see
1884 // any other way to fix this bug: when a multiline text control is
1885 // inside a wxFrame, we need to generate the navigation event as
1886 // otherwise nothing happens at all, but when the same control is
1887 // created inside a dialog, IsDialogMessage() *does* switch focus
1888 // all by itself and so if we do it here as well, it is advanced
1889 // twice and goes to the next control... to prevent this from
1890 // happening we're doing this ugly check, the logic being that if
1891 // we don't have focus then it had been already changed to the next
1892 // control
1893 //
1894 // the right thing to do would, of course, be to understand what
1895 // the hell is IsDialogMessage() doing but this is beyond my feeble
1896 // forces at the moment unfortunately
1897 if ( !(m_windowStyle & wxTE_PROCESS_TAB))
1898 {
1899 if ( FindFocus() == this )
1900 {
1901 int flags = 0;
1902 if (!event.ShiftDown())
1903 flags |= wxNavigationKeyEvent::IsForward ;
1904 if (event.ControlDown())
1905 flags |= wxNavigationKeyEvent::WinChange ;
1906 if (Navigate(flags))
1907 return;
1908 }
1909 }
1910 else
1911 {
1912 // Insert tab since calling the default Windows handler
1913 // doesn't seem to do it
1914 WriteText(wxT("\t"));
1915 return;
1916 }
1917 break;
1918 }
1919
1920 // no, we didn't process it
1921 event.Skip();
1922 }
1923
1924 WXLRESULT wxTextCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
1925 {
1926 WXLRESULT lRc = wxTextCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
1927
1928 if ( nMsg == WM_GETDLGCODE )
1929 {
1930 // we always want the chars and the arrows: the arrows for navigation
1931 // and the chars because we want Ctrl-C to work even in a read only
1932 // control
1933 long lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
1934
1935 if ( IsEditable() )
1936 {
1937 // we may have several different cases:
1938 // 1. normal case: both TAB and ENTER are used for dlg navigation
1939 // 2. ctrl which wants TAB for itself: ENTER is used to pass to the
1940 // next control in the dialog
1941 // 3. ctrl which wants ENTER for itself: TAB is used for dialog
1942 // navigation
1943 // 4. ctrl which wants both TAB and ENTER: Ctrl-ENTER is used to go
1944 // to the next control
1945
1946 // the multiline edit control should always get <Return> for itself
1947 if ( HasFlag(wxTE_PROCESS_ENTER) || HasFlag(wxTE_MULTILINE) )
1948 lDlgCode |= DLGC_WANTMESSAGE;
1949
1950 if ( HasFlag(wxTE_PROCESS_TAB) )
1951 lDlgCode |= DLGC_WANTTAB;
1952
1953 lRc |= lDlgCode;
1954 }
1955 else // !editable
1956 {
1957 // NB: use "=", not "|=" as the base class version returns the
1958 // same flags is this state as usual (i.e. including
1959 // DLGC_WANTMESSAGE). This is strange (how does it work in the
1960 // native Win32 apps?) but for now live with it.
1961 lRc = lDlgCode;
1962 }
1963 }
1964
1965 return lRc;
1966 }
1967
1968 // ----------------------------------------------------------------------------
1969 // text control event processing
1970 // ----------------------------------------------------------------------------
1971
1972 bool wxTextCtrl::SendUpdateEvent()
1973 {
1974 switch ( m_updatesCount )
1975 {
1976 case 0:
1977 // remember that we've got an update
1978 m_updatesCount++;
1979 break;
1980
1981 case 1:
1982 // we had already sent one event since the last control modification
1983 return false;
1984
1985 default:
1986 wxFAIL_MSG( _T("unexpected wxTextCtrl::m_updatesCount value") );
1987 // fall through
1988
1989 case -1:
1990 // we hadn't updated the control ourselves, this event comes from
1991 // the user, don't need to ignore it nor update the count
1992 break;
1993
1994 case -2:
1995 // the control was updated programmatically and we do NOT want to
1996 // send events
1997 return false;
1998 }
1999
2000 wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, GetId());
2001 InitCommandEvent(event);
2002
2003 return ProcessCommand(event);
2004 }
2005
2006 bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
2007 {
2008 switch ( param )
2009 {
2010 case EN_SETFOCUS:
2011 case EN_KILLFOCUS:
2012 {
2013 wxFocusEvent event(param == EN_KILLFOCUS ? wxEVT_KILL_FOCUS
2014 : wxEVT_SET_FOCUS,
2015 m_windowId);
2016 event.SetEventObject(this);
2017 GetEventHandler()->ProcessEvent(event);
2018 }
2019 break;
2020
2021 case EN_CHANGE:
2022 SendUpdateEvent();
2023 break;
2024
2025 case EN_MAXTEXT:
2026 // the text size limit has been hit -- try to increase it
2027 if ( !AdjustSpaceLimit() )
2028 {
2029 wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, m_windowId);
2030 InitCommandEvent(event);
2031 event.SetString(GetValue());
2032 ProcessCommand(event);
2033 }
2034 break;
2035
2036 // the other edit notification messages are not processed
2037 default:
2038 return false;
2039 }
2040
2041 // processed
2042 return true;
2043 }
2044
2045 WXHBRUSH wxTextCtrl::MSWControlColor(WXHDC hDC, WXHWND hWnd)
2046 {
2047 if ( !IsEnabled() && !HasFlag(wxTE_MULTILINE) )
2048 return MSWControlColorDisabled(hDC);
2049
2050 return wxTextCtrlBase::MSWControlColor(hDC, hWnd);
2051 }
2052
2053 bool wxTextCtrl::HasSpaceLimit(unsigned int *len) const
2054 {
2055 // HACK: we try to automatically extend the limit for the amount of text
2056 // to allow (interactively) entering more than 64Kb of text under
2057 // Win9x but we shouldn't reset the text limit which was previously
2058 // set explicitly with SetMaxLength()
2059 //
2060 // Unfortunately there is no EM_GETLIMITTEXTSETBYUSER and so we don't
2061 // know the limit we set (if any). We could solve this by storing the
2062 // limit we set in wxTextCtrl but to save space we prefer to simply
2063 // test here the actual limit value: we consider that SetMaxLength()
2064 // can only be called for small values while EN_MAXTEXT is only sent
2065 // for large values (in practice the default limit seems to be 30000
2066 // but make it smaller just to be on the safe side)
2067 *len = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
2068 return *len < 10001;
2069
2070 }
2071
2072 bool wxTextCtrl::AdjustSpaceLimit()
2073 {
2074 unsigned int limit;
2075 if ( HasSpaceLimit(&limit) )
2076 return false;
2077
2078 unsigned int len = ::GetWindowTextLength(GetHwnd());
2079 if ( len >= limit )
2080 {
2081 // increment in 32Kb chunks
2082 SetMaxLength(len + 0x8000);
2083 }
2084
2085 // we changed the limit
2086 return true;
2087 }
2088
2089 bool wxTextCtrl::AcceptsFocus() const
2090 {
2091 // we don't want focus if we can't be edited unless we're a multiline
2092 // control because then it might be still nice to get focus from keyboard
2093 // to be able to scroll it without mouse
2094 return (IsEditable() || IsMultiLine()) && wxControl::AcceptsFocus();
2095 }
2096
2097 wxSize wxTextCtrl::DoGetBestSize() const
2098 {
2099 int cx, cy;
2100 wxGetCharSize(GetHWND(), &cx, &cy, GetFont());
2101
2102 int wText = DEFAULT_ITEM_WIDTH;
2103
2104 int hText = cy;
2105 if ( m_windowStyle & wxTE_MULTILINE )
2106 {
2107 hText *= wxMax(wxMin(GetNumberOfLines(), 10), 2);
2108 }
2109 //else: for single line control everything is ok
2110
2111 // we have to add the adjustments for the control height only once, not
2112 // once per line, so do it after multiplication above
2113 hText += EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy) - cy;
2114
2115 return wxSize(wText, hText);
2116 }
2117
2118 // ----------------------------------------------------------------------------
2119 // standard handlers for standard edit menu events
2120 // ----------------------------------------------------------------------------
2121
2122 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
2123 {
2124 Cut();
2125 }
2126
2127 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
2128 {
2129 Copy();
2130 }
2131
2132 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
2133 {
2134 Paste();
2135 }
2136
2137 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
2138 {
2139 Undo();
2140 }
2141
2142 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
2143 {
2144 Redo();
2145 }
2146
2147 void wxTextCtrl::OnDelete(wxCommandEvent& WXUNUSED(event))
2148 {
2149 long from, to;
2150 GetSelection(& from, & to);
2151 if (from != -1 && to != -1)
2152 Remove(from, to);
2153 }
2154
2155 void wxTextCtrl::OnSelectAll(wxCommandEvent& WXUNUSED(event))
2156 {
2157 SetSelection(-1, -1);
2158 }
2159
2160 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
2161 {
2162 event.Enable( CanCut() );
2163 }
2164
2165 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
2166 {
2167 event.Enable( CanCopy() );
2168 }
2169
2170 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
2171 {
2172 event.Enable( CanPaste() );
2173 }
2174
2175 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
2176 {
2177 event.Enable( CanUndo() );
2178 }
2179
2180 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
2181 {
2182 event.Enable( CanRedo() );
2183 }
2184
2185 void wxTextCtrl::OnUpdateDelete(wxUpdateUIEvent& event)
2186 {
2187 long from, to;
2188 GetSelection(& from, & to);
2189 event.Enable(from != -1 && to != -1 && from != to && IsEditable()) ;
2190 }
2191
2192 void wxTextCtrl::OnUpdateSelectAll(wxUpdateUIEvent& event)
2193 {
2194 event.Enable(GetLastPosition() > 0);
2195 }
2196
2197 void wxTextCtrl::OnContextMenu(wxContextMenuEvent& event)
2198 {
2199 #if wxUSE_RICHEDIT
2200 if (IsRich())
2201 {
2202 if (!m_privateContextMenu)
2203 {
2204 m_privateContextMenu = new wxMenu;
2205 m_privateContextMenu->Append(wxID_UNDO, _("&Undo"));
2206 m_privateContextMenu->Append(wxID_REDO, _("&Redo"));
2207 m_privateContextMenu->AppendSeparator();
2208 m_privateContextMenu->Append(wxID_CUT, _("Cu&t"));
2209 m_privateContextMenu->Append(wxID_COPY, _("&Copy"));
2210 m_privateContextMenu->Append(wxID_PASTE, _("&Paste"));
2211 m_privateContextMenu->Append(wxID_CLEAR, _("&Delete"));
2212 m_privateContextMenu->AppendSeparator();
2213 m_privateContextMenu->Append(wxID_SELECTALL, _("Select &All"));
2214 }
2215 PopupMenu(m_privateContextMenu);
2216 return;
2217 }
2218 else
2219 #endif
2220 event.Skip();
2221 }
2222
2223 void wxTextCtrl::OnSetFocus(wxFocusEvent& WXUNUSED(event))
2224 {
2225 // be sure the caret remains invisible if the user had hidden it
2226 if ( !m_isNativeCaretShown )
2227 {
2228 ::HideCaret(GetHwnd());
2229 }
2230 }
2231
2232 // ----------------------------------------------------------------------------
2233 // Default colors for MSW text control
2234 //
2235 // Set default background color to the native white instead of
2236 // the default wxSYS_COLOUR_BTNFACE (is triggered with wxNullColour).
2237 // ----------------------------------------------------------------------------
2238
2239 wxVisualAttributes wxTextCtrl::GetDefaultAttributes() const
2240 {
2241 wxVisualAttributes attrs;
2242 attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
2243 attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
2244 attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW); //white
2245
2246 return attrs;
2247 }
2248
2249 // the rest of the file only deals with the rich edit controls
2250 #if wxUSE_RICHEDIT
2251
2252 // ----------------------------------------------------------------------------
2253 // EN_LINK processing
2254 // ----------------------------------------------------------------------------
2255
2256 bool wxTextCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
2257 {
2258 NMHDR *hdr = (NMHDR* )lParam;
2259 switch ( hdr->code )
2260 {
2261 case EN_MSGFILTER:
2262 {
2263 const MSGFILTER *msgf = (MSGFILTER *)lParam;
2264 UINT msg = msgf->msg;
2265
2266 // this is a bit crazy but richedit 1.0 sends us all mouse
2267 // events _except_ WM_LBUTTONUP (don't ask me why) so we have
2268 // generate the wxWin events for this message manually
2269 //
2270 // NB: in fact, this is still not totally correct as it does
2271 // send us WM_LBUTTONUP if the selection was cleared by the
2272 // last click -- so currently we get 2 events in this case,
2273 // but as I don't see any obvious way to check for this I
2274 // leave this code in place because it's still better than
2275 // not getting left up events at all
2276 if ( msg == WM_LBUTTONUP )
2277 {
2278 WXUINT flags = msgf->wParam;
2279 int x = GET_X_LPARAM(msgf->lParam),
2280 y = GET_Y_LPARAM(msgf->lParam);
2281
2282 HandleMouseEvent(msg, x, y, flags);
2283 }
2284 }
2285
2286 // return true to process the event (and false to ignore it)
2287 return true;
2288
2289 case EN_LINK:
2290 {
2291 const ENLINK *enlink = (ENLINK *)hdr;
2292
2293 switch ( enlink->msg )
2294 {
2295 case WM_SETCURSOR:
2296 // ok, so it is hardcoded - do we really nee to
2297 // customize it?
2298 {
2299 wxCursor cur(wxCURSOR_HAND);
2300 ::SetCursor(GetHcursorOf(cur));
2301 *result = TRUE;
2302 break;
2303 }
2304
2305 case WM_MOUSEMOVE:
2306 case WM_LBUTTONDOWN:
2307 case WM_LBUTTONUP:
2308 case WM_LBUTTONDBLCLK:
2309 case WM_RBUTTONDOWN:
2310 case WM_RBUTTONUP:
2311 case WM_RBUTTONDBLCLK:
2312 // send a mouse event
2313 {
2314 static const wxEventType eventsMouse[] =
2315 {
2316 wxEVT_MOTION,
2317 wxEVT_LEFT_DOWN,
2318 wxEVT_LEFT_UP,
2319 wxEVT_LEFT_DCLICK,
2320 wxEVT_RIGHT_DOWN,
2321 wxEVT_RIGHT_UP,
2322 wxEVT_RIGHT_DCLICK,
2323 };
2324
2325 // the event ids are consecutive
2326 wxMouseEvent
2327 evtMouse(eventsMouse[enlink->msg - WM_MOUSEMOVE]);
2328
2329 InitMouseEvent(evtMouse,
2330 GET_X_LPARAM(enlink->lParam),
2331 GET_Y_LPARAM(enlink->lParam),
2332 enlink->wParam);
2333
2334 wxTextUrlEvent event(m_windowId, evtMouse,
2335 enlink->chrg.cpMin,
2336 enlink->chrg.cpMax);
2337
2338 InitCommandEvent(event);
2339
2340 *result = ProcessCommand(event);
2341 }
2342 break;
2343 }
2344 }
2345 return true;
2346 }
2347
2348 // not processed, leave it to the base class
2349 return wxTextCtrlBase::MSWOnNotify(idCtrl, lParam, result);
2350 }
2351
2352 // ----------------------------------------------------------------------------
2353 // colour setting for the rich edit controls
2354 // ----------------------------------------------------------------------------
2355
2356 bool wxTextCtrl::SetBackgroundColour(const wxColour& colour)
2357 {
2358 if ( !wxTextCtrlBase::SetBackgroundColour(colour) )
2359 {
2360 // colour didn't really change
2361 return false;
2362 }
2363
2364 if ( IsRich() )
2365 {
2366 // rich edit doesn't use WM_CTLCOLOR, hence we need to send
2367 // EM_SETBKGNDCOLOR additionally
2368 ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour));
2369 }
2370
2371 return true;
2372 }
2373
2374 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
2375 {
2376 if ( !wxTextCtrlBase::SetForegroundColour(colour) )
2377 {
2378 // colour didn't really change
2379 return false;
2380 }
2381
2382 if ( IsRich() )
2383 {
2384 // change the colour of everything
2385 CHARFORMAT cf;
2386 wxZeroMemory(cf);
2387 cf.cbSize = sizeof(cf);
2388 cf.dwMask = CFM_COLOR;
2389 cf.crTextColor = wxColourToRGB(colour);
2390 ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf);
2391 }
2392
2393 return true;
2394 }
2395
2396 // ----------------------------------------------------------------------------
2397 // styling support for rich edit controls
2398 // ----------------------------------------------------------------------------
2399
2400 #if wxUSE_RICHEDIT
2401
2402 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
2403 {
2404 if ( !IsRich() )
2405 {
2406 // can't do it with normal text control
2407 return false;
2408 }
2409
2410 // the richedit 1.0 doesn't handle setting background colour, so don't
2411 // even try to do anything if it's the only thing we want to change
2412 if ( m_verRichEdit == 1 && !style.HasFont() && !style.HasTextColour() &&
2413 !style.HasLeftIndent() && !style.HasRightIndent() && !style.HasAlignment() &&
2414 !style.HasTabs() )
2415 {
2416 // nothing to do: return true if there was really nothing to do and
2417 // false if we failed to set bg colour
2418 return !style.HasBackgroundColour();
2419 }
2420
2421 // order the range if needed
2422 if ( start > end )
2423 {
2424 long tmp = start;
2425 start = end;
2426 end = tmp;
2427 }
2428
2429 // we can only change the format of the selection, so select the range we
2430 // want and restore the old selection later
2431 long startOld, endOld;
2432 GetSelection(&startOld, &endOld);
2433
2434 // but do we really have to change the selection?
2435 bool changeSel = start != startOld || end != endOld;
2436
2437 if ( changeSel )
2438 {
2439 DoSetSelection(start, end, false /* don't scroll caret into view */);
2440 }
2441
2442 // initialize CHARFORMAT struct
2443 #if wxUSE_RICHEDIT2
2444 CHARFORMAT2 cf;
2445 #else
2446 CHARFORMAT cf;
2447 #endif
2448
2449 wxZeroMemory(cf);
2450
2451 // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2452 // CHARFORMAT in that case
2453 #if wxUSE_RICHEDIT2
2454 if ( m_verRichEdit == 1 )
2455 {
2456 // this is the only thing the control is going to grok
2457 cf.cbSize = sizeof(CHARFORMAT);
2458 }
2459 else
2460 #endif
2461 {
2462 // CHARFORMAT or CHARFORMAT2
2463 cf.cbSize = sizeof(cf);
2464 }
2465
2466 if ( style.HasFont() )
2467 {
2468 // VZ: CFM_CHARSET doesn't seem to do anything at all in RichEdit 2.0
2469 // but using it doesn't seem to hurt neither so leaving it for now
2470
2471 cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET |
2472 CFM_ITALIC | CFM_BOLD | CFM_UNDERLINE;
2473
2474 // fill in data from LOGFONT but recalculate lfHeight because we need
2475 // the real height in twips and not the negative number which
2476 // wxFillLogFont() returns (this is correct in general and works with
2477 // the Windows font mapper, but not here)
2478 LOGFONT lf;
2479 wxFillLogFont(&lf, &style.GetFont());
2480 cf.yHeight = 20*style.GetFont().GetPointSize(); // 1 pt = 20 twips
2481 cf.bCharSet = lf.lfCharSet;
2482 cf.bPitchAndFamily = lf.lfPitchAndFamily;
2483 wxStrncpy( cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName) );
2484
2485 // also deal with underline/italic/bold attributes: note that we must
2486 // always set CFM_ITALIC &c bits in dwMask, even if we don't set the
2487 // style to allow clearing it
2488 if ( lf.lfItalic )
2489 {
2490 cf.dwEffects |= CFE_ITALIC;
2491 }
2492
2493 if ( lf.lfWeight == FW_BOLD )
2494 {
2495 cf.dwEffects |= CFE_BOLD;
2496 }
2497
2498 if ( lf.lfUnderline )
2499 {
2500 cf.dwEffects |= CFE_UNDERLINE;
2501 }
2502
2503 // strikeout fonts are not supported by wxWidgets
2504 }
2505
2506 if ( style.HasTextColour() )
2507 {
2508 cf.dwMask |= CFM_COLOR;
2509 cf.crTextColor = wxColourToRGB(style.GetTextColour());
2510 }
2511
2512 #if wxUSE_RICHEDIT2
2513 if ( m_verRichEdit != 1 && style.HasBackgroundColour() )
2514 {
2515 cf.dwMask |= CFM_BACKCOLOR;
2516 cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
2517 }
2518 #endif // wxUSE_RICHEDIT2
2519
2520 // do format the selection
2521 bool ok = ::SendMessage(GetHwnd(), EM_SETCHARFORMAT,
2522 SCF_SELECTION, (LPARAM)&cf) != 0;
2523 if ( !ok )
2524 {
2525 wxLogDebug(_T("SendMessage(EM_SETCHARFORMAT, SCF_SELECTION) failed"));
2526 }
2527
2528 // now do the paragraph formatting
2529 PARAFORMAT2 pf;
2530 wxZeroMemory(pf);
2531 // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2532 // PARAFORMAT in that case
2533 #if wxUSE_RICHEDIT2
2534 if ( m_verRichEdit == 1 )
2535 {
2536 // this is the only thing the control is going to grok
2537 pf.cbSize = sizeof(PARAFORMAT);
2538 }
2539 else
2540 #endif
2541 {
2542 // PARAFORMAT or PARAFORMAT2
2543 pf.cbSize = sizeof(pf);
2544 }
2545
2546 if (style.HasAlignment())
2547 {
2548 pf.dwMask |= PFM_ALIGNMENT;
2549 if (style.GetAlignment() == wxTEXT_ALIGNMENT_RIGHT)
2550 pf.wAlignment = PFA_RIGHT;
2551 else if (style.GetAlignment() == wxTEXT_ALIGNMENT_CENTRE)
2552 pf.wAlignment = PFA_CENTER;
2553 else if (style.GetAlignment() == wxTEXT_ALIGNMENT_JUSTIFIED)
2554 pf.wAlignment = PFA_JUSTIFY;
2555 else
2556 pf.wAlignment = PFA_LEFT;
2557 }
2558
2559 if (style.HasLeftIndent())
2560 {
2561 pf.dwMask |= PFM_STARTINDENT | PFM_OFFSET;
2562
2563 // Convert from 1/10 mm to TWIPS
2564 pf.dxStartIndent = (int) (((double) style.GetLeftIndent()) * mm2twips / 10.0) ;
2565 pf.dxOffset = (int) (((double) style.GetLeftSubIndent()) * mm2twips / 10.0) ;
2566 }
2567
2568 if (style.HasRightIndent())
2569 {
2570 pf.dwMask |= PFM_RIGHTINDENT;
2571
2572 // Convert from 1/10 mm to TWIPS
2573 pf.dxRightIndent = (int) (((double) style.GetRightIndent()) * mm2twips / 10.0) ;
2574 }
2575
2576 if (style.HasTabs())
2577 {
2578 pf.dwMask |= PFM_TABSTOPS;
2579
2580 const wxArrayInt& tabs = style.GetTabs();
2581
2582 pf.cTabCount = (SHORT)wxMin(tabs.GetCount(), MAX_TAB_STOPS);
2583 size_t i;
2584 for (i = 0; i < (size_t) pf.cTabCount; i++)
2585 {
2586 // Convert from 1/10 mm to TWIPS
2587 pf.rgxTabs[i] = (int) (((double) tabs[i]) * mm2twips / 10.0) ;
2588 }
2589 }
2590
2591 #if wxUSE_RICHEDIT2
2592 if ( m_verRichEdit > 1 )
2593 {
2594 if ( wxTheApp->GetLayoutDirection() == wxLayout_RightToLeft )
2595 {
2596 // Use RTL paragraphs in RTL mode to get proper layout
2597 pf.dwMask |= PFM_RTLPARA;
2598 pf.wEffects |= PFE_RTLPARA;
2599 }
2600 }
2601 #endif // wxUSE_RICHEDIT2
2602
2603 if ( pf.dwMask )
2604 {
2605 // do format the selection
2606 bool ok = ::SendMessage(GetHwnd(), EM_SETPARAFORMAT,
2607 0, (LPARAM) &pf) != 0;
2608 if ( !ok )
2609 {
2610 wxLogDebug(_T("SendMessage(EM_SETPARAFORMAT, 0) failed"));
2611 }
2612 }
2613
2614 if ( changeSel )
2615 {
2616 // restore the original selection
2617 DoSetSelection(startOld, endOld, false);
2618 }
2619
2620 return ok;
2621 }
2622
2623 bool wxTextCtrl::SetDefaultStyle(const wxTextAttr& style)
2624 {
2625 if ( !wxTextCtrlBase::SetDefaultStyle(style) )
2626 return false;
2627
2628 if ( IsEditable() )
2629 {
2630 // we have to do this or the style wouldn't apply for the text typed by
2631 // the user
2632 wxTextPos posLast = GetLastPosition();
2633 SetStyle(posLast, posLast, m_defaultStyle);
2634 }
2635
2636 return true;
2637 }
2638
2639 bool wxTextCtrl::GetStyle(long position, wxTextAttr& style)
2640 {
2641 if ( !IsRich() )
2642 {
2643 // can't do it with normal text control
2644 return false;
2645 }
2646
2647 // initialize CHARFORMAT struct
2648 #if wxUSE_RICHEDIT2
2649 CHARFORMAT2 cf;
2650 #else
2651 CHARFORMAT cf;
2652 #endif
2653
2654 wxZeroMemory(cf);
2655
2656 // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2657 // CHARFORMAT in that case
2658 #if wxUSE_RICHEDIT2
2659 if ( m_verRichEdit == 1 )
2660 {
2661 // this is the only thing the control is going to grok
2662 cf.cbSize = sizeof(CHARFORMAT);
2663 }
2664 else
2665 #endif
2666 {
2667 // CHARFORMAT or CHARFORMAT2
2668 cf.cbSize = sizeof(cf);
2669 }
2670 // we can only change the format of the selection, so select the range we
2671 // want and restore the old selection later
2672 long startOld, endOld;
2673 GetSelection(&startOld, &endOld);
2674
2675 // but do we really have to change the selection?
2676 bool changeSel = position != startOld || position != endOld;
2677
2678 if ( changeSel )
2679 {
2680 DoSetSelection(position, position+1, false /* don't scroll caret into view */);
2681 }
2682
2683 // get the selection formatting
2684 (void) ::SendMessage(GetHwnd(), EM_GETCHARFORMAT,
2685 SCF_SELECTION, (LPARAM)&cf) ;
2686
2687
2688 LOGFONT lf;
2689 lf.lfHeight = cf.yHeight;
2690 lf.lfWidth = 0;
2691 lf.lfCharSet = ANSI_CHARSET; // FIXME: how to get correct charset?
2692 lf.lfClipPrecision = 0;
2693 lf.lfEscapement = 0;
2694 wxStrcpy(lf.lfFaceName, cf.szFaceName);
2695
2696 //NOTE: we _MUST_ set each of these values to _something_ since we
2697 //do not call wxZeroMemory on the LOGFONT lf
2698 if (cf.dwEffects & CFE_ITALIC)
2699 lf.lfItalic = TRUE;
2700 else
2701 lf.lfItalic = FALSE;
2702
2703 lf.lfOrientation = 0;
2704 lf.lfPitchAndFamily = cf.bPitchAndFamily;
2705 lf.lfQuality = 0;
2706
2707 if (cf.dwEffects & CFE_STRIKEOUT)
2708 lf.lfStrikeOut = TRUE;
2709 else
2710 lf.lfStrikeOut = FALSE;
2711
2712 if (cf.dwEffects & CFE_UNDERLINE)
2713 lf.lfUnderline = TRUE;
2714 else
2715 lf.lfUnderline = FALSE;
2716
2717 if (cf.dwEffects & CFE_BOLD)
2718 lf.lfWeight = FW_BOLD;
2719 else
2720 lf.lfWeight = FW_NORMAL;
2721
2722 wxFont font = wxCreateFontFromLogFont(& lf);
2723 if (font.Ok())
2724 {
2725 style.SetFont(font);
2726 }
2727 style.SetTextColour(wxColour(cf.crTextColor));
2728
2729 #if wxUSE_RICHEDIT2
2730 if ( m_verRichEdit != 1 )
2731 {
2732 // cf.dwMask |= CFM_BACKCOLOR;
2733 style.SetBackgroundColour(wxColour(cf.crBackColor));
2734 }
2735 #endif // wxUSE_RICHEDIT2
2736
2737 // now get the paragraph formatting
2738 PARAFORMAT2 pf;
2739 wxZeroMemory(pf);
2740 // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2741 // PARAFORMAT in that case
2742 #if wxUSE_RICHEDIT2
2743 if ( m_verRichEdit == 1 )
2744 {
2745 // this is the only thing the control is going to grok
2746 pf.cbSize = sizeof(PARAFORMAT);
2747 }
2748 else
2749 #endif
2750 {
2751 // PARAFORMAT or PARAFORMAT2
2752 pf.cbSize = sizeof(pf);
2753 }
2754
2755 // do format the selection
2756 (void) ::SendMessage(GetHwnd(), EM_GETPARAFORMAT, 0, (LPARAM) &pf) ;
2757
2758 style.SetLeftIndent( (int) ((double) pf.dxStartIndent * twips2mm * 10.0), (int) ((double) pf.dxOffset * twips2mm * 10.0) );
2759 style.SetRightIndent( (int) ((double) pf.dxRightIndent * twips2mm * 10.0) );
2760
2761 if (pf.wAlignment == PFA_CENTER)
2762 style.SetAlignment(wxTEXT_ALIGNMENT_CENTRE);
2763 else if (pf.wAlignment == PFA_RIGHT)
2764 style.SetAlignment(wxTEXT_ALIGNMENT_RIGHT);
2765 else if (pf.wAlignment == PFA_JUSTIFY)
2766 style.SetAlignment(wxTEXT_ALIGNMENT_JUSTIFIED);
2767 else
2768 style.SetAlignment(wxTEXT_ALIGNMENT_LEFT);
2769
2770 wxArrayInt tabStops;
2771 size_t i;
2772 for (i = 0; i < (size_t) pf.cTabCount; i++)
2773 {
2774 tabStops.Add( (int) ((double) (pf.rgxTabs[i] & 0xFFFF) * twips2mm * 10.0) );
2775 }
2776
2777 if ( changeSel )
2778 {
2779 // restore the original selection
2780 DoSetSelection(startOld, endOld, false);
2781 }
2782
2783 return true;
2784 }
2785
2786 #endif
2787
2788 // ----------------------------------------------------------------------------
2789 // wxRichEditModule
2790 // ----------------------------------------------------------------------------
2791
2792 static const HINSTANCE INVALID_HINSTANCE = (HINSTANCE)-1;
2793
2794 bool wxRichEditModule::OnInit()
2795 {
2796 // don't do anything - we will load it when needed
2797 return true;
2798 }
2799
2800 void wxRichEditModule::OnExit()
2801 {
2802 for ( size_t i = 0; i < WXSIZEOF(ms_hRichEdit); i++ )
2803 {
2804 if ( ms_hRichEdit[i] && ms_hRichEdit[i] != INVALID_HINSTANCE )
2805 {
2806 ::FreeLibrary(ms_hRichEdit[i]);
2807 ms_hRichEdit[i] = NULL;
2808 }
2809 }
2810 #if wxUSE_INKEDIT
2811 if (ms_inkEditLib.IsLoaded())
2812 ms_inkEditLib.Unload();
2813 #endif
2814 }
2815
2816 /* static */
2817 bool wxRichEditModule::Load(Version version)
2818 {
2819 if ( ms_hRichEdit[version] == INVALID_HINSTANCE )
2820 {
2821 // we had already tried to load it and failed
2822 return false;
2823 }
2824
2825 if ( ms_hRichEdit[version] )
2826 {
2827 // we've already got this one
2828 return true;
2829 }
2830
2831 static const wxChar *dllnames[] =
2832 {
2833 _T("riched32"),
2834 _T("riched20"),
2835 _T("msftedit"),
2836 };
2837
2838 wxCOMPILE_TIME_ASSERT( WXSIZEOF(dllnames) == Version_Max,
2839 RichEditDllNamesVersionsMismatch );
2840
2841 ms_hRichEdit[version] = ::LoadLibrary(dllnames[version]);
2842
2843 if ( !ms_hRichEdit[version] )
2844 {
2845 ms_hRichEdit[version] = INVALID_HINSTANCE;
2846
2847 return false;
2848 }
2849
2850 return true;
2851 }
2852
2853 #if wxUSE_INKEDIT
2854 // load the InkEdit library
2855 bool wxRichEditModule::LoadInkEdit()
2856 {
2857 static wxDynamicLibrary ms_inkEditLib;
2858 static bool ms_inkEditLibLoadAttemped;
2859 if (ms_inkEditLibLoadAttemped)
2860 ms_inkEditLib.IsLoaded();
2861
2862 ms_inkEditLibLoadAttemped = true;
2863
2864 wxLogNull logNull;
2865 return ms_inkEditLib.Load(wxT("inked"));
2866 }
2867 #endif
2868
2869
2870 #endif // wxUSE_RICHEDIT
2871
2872 #endif // wxUSE_TEXTCTRL && !(__SMARTPHONE__ && __WXWINCE__)
wxWidgets (Impactor)