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chop off the unwanted \r from GetLineText() return value for richedit 2.0 controls...
[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 #include "wx/wxcrtvararg.h"
41 #endif
42
43 #include "wx/sysopt.h"
44
45 #if wxUSE_CLIPBOARD
46 #include "wx/clipbrd.h"
47 #endif
48
49 #include "wx/textfile.h"
50
51 #include <windowsx.h>
52
53 #include "wx/msw/private.h"
54 #include "wx/msw/winundef.h"
55 #include "wx/msw/mslu.h"
56
57 #include <string.h>
58 #include <stdlib.h>
59
60 #ifndef __WXWINCE__
61 #include <sys/types.h>
62 #endif
63
64 #if wxUSE_RICHEDIT
65
66 #if wxUSE_INKEDIT
67 #include "wx/dynlib.h"
68 #endif
69
70 // old mingw32 has richedit stuff directly in windows.h and doesn't have
71 // richedit.h at all
72 #if !defined(__GNUWIN32_OLD__) || defined(__CYGWIN10__)
73 #include <richedit.h>
74 #endif
75
76 #endif // wxUSE_RICHEDIT
77
78 #include "wx/msw/missing.h"
79
80 // ----------------------------------------------------------------------------
81 // private classes
82 // ----------------------------------------------------------------------------
83
84 #if wxUSE_RICHEDIT
85
86 // this module initializes RichEdit DLL(s) if needed
87 class wxRichEditModule : public wxModule
88 {
89 public:
90 enum Version
91 {
92 Version_1, // riched32.dll
93 Version_2or3, // both use riched20.dll
94 Version_41, // msftedit.dll (XP SP1 and Windows 2003)
95 Version_Max
96 };
97
98 virtual bool OnInit();
99 virtual void OnExit();
100
101 // load the richedit DLL for the specified version of rich edit
102 static bool Load(Version version);
103
104 #if wxUSE_INKEDIT
105 // load the InkEdit library
106 static bool LoadInkEdit();
107 #endif
108
109 private:
110 // the handles to richedit 1.0 and 2.0 (or 3.0) DLLs
111 static HINSTANCE ms_hRichEdit[Version_Max];
112
113 #if wxUSE_INKEDIT
114 static wxDynamicLibrary ms_inkEditLib;
115 static bool ms_inkEditLibLoadAttemped;
116 #endif
117
118 DECLARE_DYNAMIC_CLASS(wxRichEditModule)
119 };
120
121 HINSTANCE wxRichEditModule::ms_hRichEdit[Version_Max] = { NULL, NULL, NULL };
122
123 #if wxUSE_INKEDIT
124 wxDynamicLibrary wxRichEditModule::ms_inkEditLib;
125 bool wxRichEditModule::ms_inkEditLibLoadAttemped = false;
126 #endif
127
128 IMPLEMENT_DYNAMIC_CLASS(wxRichEditModule, wxModule)
129
130 #endif // wxUSE_RICHEDIT
131
132 // a small class used to set m_updatesCount to 0 (to filter duplicate events if
133 // necessary) and to reset it back to -1 afterwards
134 class UpdatesCountFilter
135 {
136 public:
137 UpdatesCountFilter(int& count)
138 : m_count(count)
139 {
140 wxASSERT_MSG( m_count == -1 || m_count == -2,
141 _T("wrong initial m_updatesCount value") );
142
143 if (m_count != -2)
144 m_count = 0;
145 //else: we don't want to count how many update events we get as we're going
146 // to ignore all of them
147 }
148
149 ~UpdatesCountFilter()
150 {
151 m_count = -1;
152 }
153
154 // return true if an event has been received
155 bool GotUpdate() const
156 {
157 return m_count == 1;
158 }
159
160 private:
161 int& m_count;
162
163 DECLARE_NO_COPY_CLASS(UpdatesCountFilter)
164 };
165
166 // ----------------------------------------------------------------------------
167 // event tables and other macros
168 // ----------------------------------------------------------------------------
169
170 #if wxUSE_EXTENDED_RTTI
171 WX_DEFINE_FLAGS( wxTextCtrlStyle )
172
173 wxBEGIN_FLAGS( wxTextCtrlStyle )
174 // new style border flags, we put them first to
175 // use them for streaming out
176 wxFLAGS_MEMBER(wxBORDER_SIMPLE)
177 wxFLAGS_MEMBER(wxBORDER_SUNKEN)
178 wxFLAGS_MEMBER(wxBORDER_DOUBLE)
179 wxFLAGS_MEMBER(wxBORDER_RAISED)
180 wxFLAGS_MEMBER(wxBORDER_STATIC)
181 wxFLAGS_MEMBER(wxBORDER_NONE)
182
183 // old style border flags
184 wxFLAGS_MEMBER(wxSIMPLE_BORDER)
185 wxFLAGS_MEMBER(wxSUNKEN_BORDER)
186 wxFLAGS_MEMBER(wxDOUBLE_BORDER)
187 wxFLAGS_MEMBER(wxRAISED_BORDER)
188 wxFLAGS_MEMBER(wxSTATIC_BORDER)
189 wxFLAGS_MEMBER(wxBORDER)
190
191 // standard window styles
192 wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
193 wxFLAGS_MEMBER(wxCLIP_CHILDREN)
194 wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
195 wxFLAGS_MEMBER(wxWANTS_CHARS)
196 wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
197 wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
198 wxFLAGS_MEMBER(wxVSCROLL)
199 wxFLAGS_MEMBER(wxHSCROLL)
200
201 wxFLAGS_MEMBER(wxTE_PROCESS_ENTER)
202 wxFLAGS_MEMBER(wxTE_PROCESS_TAB)
203 wxFLAGS_MEMBER(wxTE_MULTILINE)
204 wxFLAGS_MEMBER(wxTE_PASSWORD)
205 wxFLAGS_MEMBER(wxTE_READONLY)
206 wxFLAGS_MEMBER(wxHSCROLL)
207 wxFLAGS_MEMBER(wxTE_RICH)
208 wxFLAGS_MEMBER(wxTE_RICH2)
209 wxFLAGS_MEMBER(wxTE_AUTO_URL)
210 wxFLAGS_MEMBER(wxTE_NOHIDESEL)
211 wxFLAGS_MEMBER(wxTE_LEFT)
212 wxFLAGS_MEMBER(wxTE_CENTRE)
213 wxFLAGS_MEMBER(wxTE_RIGHT)
214 wxFLAGS_MEMBER(wxTE_DONTWRAP)
215 wxFLAGS_MEMBER(wxTE_CHARWRAP)
216 wxFLAGS_MEMBER(wxTE_WORDWRAP)
217
218 wxEND_FLAGS( wxTextCtrlStyle )
219
220 IMPLEMENT_DYNAMIC_CLASS_XTI(wxTextCtrl, wxControl,"wx/textctrl.h")
221
222 wxBEGIN_PROPERTIES_TABLE(wxTextCtrl)
223 wxEVENT_PROPERTY( TextUpdated , wxEVT_COMMAND_TEXT_UPDATED , wxCommandEvent )
224 wxEVENT_PROPERTY( TextEnter , wxEVT_COMMAND_TEXT_ENTER , wxCommandEvent )
225
226 wxPROPERTY( Font , wxFont , SetFont , GetFont , EMPTY_MACROVALUE, 0 /*flags*/ , wxT("Helpstring") , wxT("group") )
227 wxPROPERTY( Value , wxString , SetValue, GetValue, wxString() , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
228 wxPROPERTY_FLAGS( WindowStyle , wxTextCtrlStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
229 wxEND_PROPERTIES_TABLE()
230
231 wxBEGIN_HANDLERS_TABLE(wxTextCtrl)
232 wxEND_HANDLERS_TABLE()
233
234 wxCONSTRUCTOR_6( wxTextCtrl , wxWindow* , Parent , wxWindowID , Id , wxString , Value , wxPoint , Position , wxSize , Size , long , WindowStyle)
235 #else
236 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxTextCtrlBase)
237 #endif
238
239
240 BEGIN_EVENT_TABLE(wxTextCtrl, wxTextCtrlBase)
241 EVT_CHAR(wxTextCtrl::OnChar)
242 EVT_DROP_FILES(wxTextCtrl::OnDropFiles)
243
244 #if wxUSE_RICHEDIT
245 EVT_CONTEXT_MENU(wxTextCtrl::OnContextMenu)
246 #endif
247
248 EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
249 EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
250 EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
251 EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
252 EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
253 EVT_MENU(wxID_CLEAR, wxTextCtrl::OnDelete)
254 EVT_MENU(wxID_SELECTALL, wxTextCtrl::OnSelectAll)
255
256 EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
257 EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
258 EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
259 EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
260 EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
261 EVT_UPDATE_UI(wxID_CLEAR, wxTextCtrl::OnUpdateDelete)
262 EVT_UPDATE_UI(wxID_SELECTALL, wxTextCtrl::OnUpdateSelectAll)
263
264 EVT_SET_FOCUS(wxTextCtrl::OnSetFocus)
265 END_EVENT_TABLE()
266
267 // ============================================================================
268 // implementation
269 // ============================================================================
270
271 // ----------------------------------------------------------------------------
272 // creation
273 // ----------------------------------------------------------------------------
274
275 void wxTextCtrl::Init()
276 {
277 #if wxUSE_RICHEDIT
278 m_verRichEdit = 0;
279 #endif // wxUSE_RICHEDIT
280
281 #if wxUSE_INKEDIT && wxUSE_RICHEDIT
282 m_isInkEdit = 0;
283 #endif
284
285 m_privateContextMenu = NULL;
286 m_updatesCount = -1;
287 m_isNativeCaretShown = true;
288 }
289
290 wxTextCtrl::~wxTextCtrl()
291 {
292 delete m_privateContextMenu;
293 }
294
295 bool wxTextCtrl::Create(wxWindow *parent,
296 wxWindowID id,
297 const wxString& value,
298 const wxPoint& pos,
299 const wxSize& size,
300 long style,
301 const wxValidator& validator,
302 const wxString& name)
303 {
304 // base initialization
305 if ( !CreateControl(parent, id, pos, size, style, validator, name) )
306 return false;
307
308 if ( !MSWCreateText(value, pos, size) )
309 return false;
310
311 return true;
312 }
313
314 // returns true if the platform should explicitly apply a theme border
315 bool wxTextCtrl::CanApplyThemeBorder() const
316 {
317 #ifdef __WXWINCE__
318 return false;
319 #else
320 // Standard text control already handles theming
321 return ((GetWindowStyle() & (wxTE_RICH|wxTE_RICH2)) != 0);
322 #endif
323 }
324
325 bool wxTextCtrl::MSWCreateText(const wxString& value,
326 const wxPoint& pos,
327 const wxSize& size)
328 {
329 // translate wxWin style flags to MSW ones
330 WXDWORD msStyle = MSWGetCreateWindowFlags();
331
332 // do create the control - either an EDIT or RICHEDIT
333 wxString windowClass = wxT("EDIT");
334
335 #if defined(__POCKETPC__) || defined(__SMARTPHONE__)
336 // A control that capitalizes the first letter
337 if ( HasFlag(wxTE_CAPITALIZE) )
338 windowClass = wxT("CAPEDIT");
339 #endif
340
341 #if wxUSE_RICHEDIT
342 if ( m_windowStyle & wxTE_AUTO_URL )
343 {
344 // automatic URL detection only works in RichEdit 2.0+
345 m_windowStyle |= wxTE_RICH2;
346 }
347
348 if ( m_windowStyle & wxTE_RICH2 )
349 {
350 // using richedit 2.0 implies using wxTE_RICH
351 m_windowStyle |= wxTE_RICH;
352 }
353
354 // we need to load the richedit DLL before creating the rich edit control
355 if ( m_windowStyle & wxTE_RICH )
356 {
357 // versions 2.0, 3.0 and 4.1 of rich edit are mostly compatible with
358 // each other but not with version 1.0, so we have separate flags for
359 // the version 1.0 and the others (and so m_verRichEdit may be 0 (plain
360 // EDIT control), 1 for version 1.0 or 2 for any higher version)
361 //
362 // notice that 1.0 has no Unicode support at all so in Unicode build we
363 // must use another version
364
365 #if wxUSE_UNICODE
366 m_verRichEdit = 2;
367 #else // !wxUSE_UNICODE
368 m_verRichEdit = m_windowStyle & wxTE_RICH2 ? 2 : 1;
369 #endif // wxUSE_UNICODE/!wxUSE_UNICODE
370
371 #if wxUSE_INKEDIT
372 // First test if we can load an ink edit control. Normally, all edit
373 // controls will be made ink edit controls if a tablet environment is
374 // found (or if msw.inkedit != 0 and the InkEd.dll is present).
375 // However, an application can veto ink edit controls by either specifying
376 // msw.inkedit = 0 or by removing wxTE_RICH[2] from the style.
377 //
378 if ((wxSystemSettings::HasFeature(wxSYS_TABLET_PRESENT) || wxSystemOptions::GetOptionInt(wxT("msw.inkedit")) != 0) &&
379 !(wxSystemOptions::HasOption(wxT("msw.inkedit")) && wxSystemOptions::GetOptionInt(wxT("msw.inkedit")) == 0))
380 {
381 if (wxRichEditModule::LoadInkEdit())
382 {
383 windowClass = INKEDIT_CLASS;
384
385 #if wxUSE_INKEDIT && wxUSE_RICHEDIT
386 m_isInkEdit = 1;
387 #endif
388
389 // Fake rich text version for other calls
390 m_verRichEdit = 2;
391 }
392 }
393 #endif
394
395 if (!IsInkEdit())
396 {
397 if ( m_verRichEdit == 2 )
398 {
399 if ( wxRichEditModule::Load(wxRichEditModule::Version_41) )
400 {
401 // yes, class name for version 4.1 really is 5.0
402 windowClass = _T("RICHEDIT50W");
403 }
404 else if ( wxRichEditModule::Load(wxRichEditModule::Version_2or3) )
405 {
406 windowClass = _T("RichEdit20")
407 #if wxUSE_UNICODE
408 _T("W");
409 #else // ANSI
410 _T("A");
411 #endif // Unicode/ANSI
412 }
413 else // failed to load msftedit.dll and riched20.dll
414 {
415 m_verRichEdit = 1;
416 }
417 }
418
419 if ( m_verRichEdit == 1 )
420 {
421 if ( wxRichEditModule::Load(wxRichEditModule::Version_1) )
422 {
423 windowClass = _T("RICHEDIT");
424 }
425 else // failed to load any richedit control DLL
426 {
427 // only give the error msg once if the DLL can't be loaded
428 static bool s_errorGiven = false; // MT ok as only used by GUI
429
430 if ( !s_errorGiven )
431 {
432 wxLogError(_("Impossible to create a rich edit control, using simple text control instead. Please reinstall riched32.dll"));
433
434 s_errorGiven = true;
435 }
436
437 m_verRichEdit = 0;
438 }
439 }
440 } // !useInkEdit
441 }
442 #endif // wxUSE_RICHEDIT
443
444 // we need to turn '\n's into "\r\n"s for the multiline controls
445 wxString valueWin;
446 if ( m_windowStyle & wxTE_MULTILINE )
447 {
448 valueWin = wxTextFile::Translate(value, wxTextFileType_Dos);
449 }
450 else // single line
451 {
452 valueWin = value;
453 }
454
455 if ( !MSWCreateControl(windowClass.wx_str(), msStyle, pos, size, valueWin) )
456 return false;
457
458 #if wxUSE_RICHEDIT
459 if (IsRich())
460 {
461 #if wxUSE_INKEDIT
462 if (IsInkEdit())
463 {
464 // Pass IEM_InsertText (0) as wParam, in order to have the ink always
465 // converted to text.
466 ::SendMessage(GetHwnd(), EM_SETINKINSERTMODE, 0, 0);
467
468 // Make sure the mouse can be used for input
469 ::SendMessage(GetHwnd(), EM_SETUSEMOUSEFORINPUT, 1, 0);
470 }
471 #endif
472
473 // enable the events we're interested in: we want to get EN_CHANGE as
474 // for the normal controls
475 LPARAM mask = ENM_CHANGE;
476
477 if (GetRichVersion() == 1 && !IsInkEdit())
478 {
479 // we also need EN_MSGFILTER for richedit 1.0 for the reasons
480 // explained in its handler
481 mask |= ENM_MOUSEEVENTS;
482
483 // we also need to force the appearance of the vertical scrollbar
484 // initially as otherwise the control doesn't refresh correctly
485 // after resize: but once the vertical scrollbar had been shown
486 // (even if it's subsequently hidden) it does
487 //
488 // this is clearly a bug and for now it has been only noticed under
489 // Windows XP, so if we're sure it works correctly under other
490 // systems we could do this only for XP
491 SetSize(-1, 1); // 1 is small enough to force vert scrollbar
492 SetInitialSize(size);
493 }
494 else if ( m_windowStyle & wxTE_AUTO_URL )
495 {
496 mask |= ENM_LINK;
497
498 ::SendMessage(GetHwnd(), EM_AUTOURLDETECT, TRUE, 0);
499 }
500
501 ::SendMessage(GetHwnd(), EM_SETEVENTMASK, 0, mask);
502 }
503 #endif // wxUSE_RICHEDIT
504
505 #ifndef __WXWINCE__
506 // Without this, if we pass the size in the constructor and then don't change it,
507 // the themed borders will be drawn incorrectly.
508 SetWindowPos(GetHwnd(), NULL, 0, 0, 0, 0,
509 SWP_NOZORDER|SWP_NOMOVE|SWP_NOSIZE|SWP_NOACTIVATE|
510 SWP_FRAMECHANGED);
511 #endif
512
513 return true;
514 }
515
516 // Make sure the window style (etc.) reflects the HWND style (roughly)
517 void wxTextCtrl::AdoptAttributesFromHWND()
518 {
519 wxWindow::AdoptAttributesFromHWND();
520
521 HWND hWnd = GetHwnd();
522 long style = ::GetWindowLong(hWnd, GWL_STYLE);
523
524 // retrieve the style to see whether this is an edit or richedit ctrl
525 #if wxUSE_RICHEDIT
526 wxString classname = wxGetWindowClass(GetHWND());
527
528 if ( classname.IsSameAs(_T("EDIT"), false /* no case */) )
529 {
530 m_verRichEdit = 0;
531 }
532 else // rich edit?
533 {
534 wxChar c;
535 if ( wxSscanf(classname, _T("RichEdit%d0%c"), &m_verRichEdit, &c) != 2 )
536 {
537 wxLogDebug(_T("Unknown edit control '%s'."), classname.c_str());
538
539 m_verRichEdit = 0;
540 }
541 }
542 #endif // wxUSE_RICHEDIT
543
544 if (style & ES_MULTILINE)
545 m_windowStyle |= wxTE_MULTILINE;
546 if (style & ES_PASSWORD)
547 m_windowStyle |= wxTE_PASSWORD;
548 if (style & ES_READONLY)
549 m_windowStyle |= wxTE_READONLY;
550 if (style & ES_WANTRETURN)
551 m_windowStyle |= wxTE_PROCESS_ENTER;
552 if (style & ES_CENTER)
553 m_windowStyle |= wxTE_CENTRE;
554 if (style & ES_RIGHT)
555 m_windowStyle |= wxTE_RIGHT;
556 }
557
558 WXDWORD wxTextCtrl::MSWGetStyle(long style, WXDWORD *exstyle) const
559 {
560 long msStyle = wxControl::MSWGetStyle(style, exstyle);
561
562 // styles which we alaways add by default
563 if ( style & wxTE_MULTILINE )
564 {
565 msStyle |= ES_MULTILINE | ES_WANTRETURN;
566 if ( !(style & wxTE_NO_VSCROLL) )
567 {
568 // always adjust the vertical scrollbar automatically if we have it
569 msStyle |= WS_VSCROLL | ES_AUTOVSCROLL;
570
571 #if wxUSE_RICHEDIT
572 // we have to use this style for the rich edit controls because
573 // without it the vertical scrollbar never appears at all in
574 // richedit 3.0 because of our ECO_NOHIDESEL hack (search for it)
575 if ( style & wxTE_RICH2 )
576 {
577 msStyle |= ES_DISABLENOSCROLL;
578 }
579 #endif // wxUSE_RICHEDIT
580 }
581
582 style |= wxTE_PROCESS_ENTER;
583 }
584 else // !multiline
585 {
586 // there is really no reason to not have this style for single line
587 // text controls
588 msStyle |= ES_AUTOHSCROLL;
589 }
590
591 // note that wxTE_DONTWRAP is the same as wxHSCROLL so if we have a horz
592 // scrollbar, there is no wrapping -- which makes sense
593 if ( style & wxTE_DONTWRAP )
594 {
595 // automatically scroll the control horizontally as necessary
596 //
597 // NB: ES_AUTOHSCROLL is needed for richedit controls or they don't
598 // show horz scrollbar at all, even in spite of WS_HSCROLL, and as
599 // it doesn't seem to do any harm for plain edit controls, add it
600 // always
601 msStyle |= WS_HSCROLL | ES_AUTOHSCROLL;
602 }
603
604 if ( style & wxTE_READONLY )
605 msStyle |= ES_READONLY;
606
607 if ( style & wxTE_PASSWORD )
608 msStyle |= ES_PASSWORD;
609
610 if ( style & wxTE_NOHIDESEL )
611 msStyle |= ES_NOHIDESEL;
612
613 // note that we can't do do "& wxTE_LEFT" as wxTE_LEFT == 0
614 if ( style & wxTE_CENTRE )
615 msStyle |= ES_CENTER;
616 else if ( style & wxTE_RIGHT )
617 msStyle |= ES_RIGHT;
618 else
619 msStyle |= ES_LEFT; // ES_LEFT is 0 as well but for consistency...
620
621 return msStyle;
622 }
623
624 void wxTextCtrl::SetWindowStyleFlag(long style)
625 {
626 // changing the alignment of the control dynamically works under Win2003
627 // (but not older Windows version: it seems to work under some versions of
628 // XP but not other ones, and we have no way to determine it so be
629 // conservative here) and only for plain EDIT controls (not RICH ones) and
630 // we have to recreate the control to make it always work
631 if ( IsRich() || wxGetWinVersion() < wxWinVersion_2003 )
632 {
633 const long alignMask = wxTE_LEFT | wxTE_CENTRE | wxTE_RIGHT;
634 if ( (style & alignMask) != (GetWindowStyle() & alignMask) )
635 {
636 const wxString value = GetValue();
637 const wxPoint pos = GetPosition();
638 const wxSize size = GetSize();
639
640 // delete the old window
641 HWND hwnd = GetHwnd();
642 DissociateHandle();
643 ::DestroyWindow(hwnd);
644
645 // create the new one with the updated flags
646 m_windowStyle = style;
647 MSWCreateText(value, pos, size);
648
649 // and make sure it has the same attributes as before
650 if ( m_hasFont )
651 {
652 // calling SetFont(m_font) would do nothing as the code would
653 // notice that the font didn't change, so force it to believe
654 // that it did
655 wxFont font = m_font;
656 m_font = wxNullFont;
657 SetFont(font);
658 }
659
660 if ( m_hasFgCol )
661 {
662 wxColour colFg = m_foregroundColour;
663 m_foregroundColour = wxNullColour;
664 SetForegroundColour(colFg);
665 }
666
667 if ( m_hasBgCol )
668 {
669 wxColour colBg = m_backgroundColour;
670 m_backgroundColour = wxNullColour;
671 SetBackgroundColour(colBg);
672 }
673
674 // note that text styles are lost but this is probably not a big
675 // problem: if you use styles, you probably don't use nor change
676 // alignment flags anyhow
677
678 return;
679 }
680 }
681
682 #if wxUSE_RICHEDIT
683 // we have to deal with some styles separately because they can't be
684 // changed by simply calling SetWindowLong(GWL_STYLE) but can be changed
685 // using richedit-specific EM_SETOPTIONS
686 if ( IsRich() &&
687 ((style & wxTE_NOHIDESEL) != (GetWindowStyle() & wxTE_NOHIDESEL)) )
688 {
689 bool set = (style & wxTE_NOHIDESEL) != 0;
690
691 ::SendMessage(GetHwnd(), EM_SETOPTIONS, set ? ECOOP_OR : ECOOP_AND,
692 set ? ECO_NOHIDESEL : ~ECO_NOHIDESEL);
693 }
694 #endif // wxUSE_RICHEDIT
695
696 wxControl::SetWindowStyleFlag(style);
697 }
698
699 // ----------------------------------------------------------------------------
700 // set/get the controls text
701 // ----------------------------------------------------------------------------
702
703 bool wxTextCtrl::IsEmpty() const
704 {
705 // this is an optimization for multiline controls containing a lot of text
706 if ( IsMultiLine() && GetNumberOfLines() != 1 )
707 return false;
708
709 return wxTextCtrlBase::IsEmpty();
710 }
711
712 wxString wxTextCtrl::GetValue() const
713 {
714 // range 0..-1 is special for GetRange() and means to retrieve all text
715 return GetRange(0, -1);
716 }
717
718 wxString wxTextCtrl::GetRange(long from, long to) const
719 {
720 wxString str;
721
722 if ( from >= to && to != -1 )
723 {
724 // nothing to retrieve
725 return str;
726 }
727
728 #if wxUSE_RICHEDIT
729 if ( IsRich() )
730 {
731 int len = GetWindowTextLength(GetHwnd());
732 if ( len > from )
733 {
734 if ( to == -1 )
735 to = len;
736
737 #if !wxUSE_UNICODE
738 // we must use EM_STREAMOUT if we don't want to lose all characters
739 // not representable in the current character set (EM_GETTEXTRANGE
740 // simply replaces them with question marks...)
741 if ( GetRichVersion() > 1 )
742 {
743 // we must have some encoding, otherwise any 8bit chars in the
744 // control are simply *lost* (replaced by '?')
745 wxFontEncoding encoding = wxFONTENCODING_SYSTEM;
746
747 wxFont font = m_defaultStyle.GetFont();
748 if ( !font.Ok() )
749 font = GetFont();
750
751 if ( font.Ok() )
752 {
753 encoding = font.GetEncoding();
754 }
755
756 if ( encoding == wxFONTENCODING_SYSTEM )
757 {
758 encoding = wxLocale::GetSystemEncoding();
759 }
760
761 if ( encoding == wxFONTENCODING_SYSTEM )
762 {
763 encoding = wxFONTENCODING_ISO8859_1;
764 }
765
766 str = StreamOut(encoding);
767
768 if ( !str.empty() )
769 {
770 // we have to manually extract the required part, luckily
771 // this is easy in this case as EOL characters in str are
772 // just LFs because we remove CRs in wxRichEditStreamOut
773 str = str.Mid(from, to - from);
774 }
775 }
776
777 // StreamOut() wasn't used or failed, try to do it in normal way
778 if ( str.empty() )
779 #endif // !wxUSE_UNICODE
780 {
781 // alloc one extra WORD as needed by the control
782 wxStringBuffer tmp(str, ++len);
783 wxChar *p = tmp;
784
785 TEXTRANGE textRange;
786 textRange.chrg.cpMin = from;
787 textRange.chrg.cpMax = to;
788 textRange.lpstrText = p;
789
790 (void)::SendMessage(GetHwnd(), EM_GETTEXTRANGE,
791 0, (LPARAM)&textRange);
792
793 if ( m_verRichEdit > 1 )
794 {
795 // RichEdit 2.0 uses just CR ('\r') for the
796 // newlines which is neither Unix nor Windows
797 // style - convert it to something reasonable
798 for ( ; *p; p++ )
799 {
800 if ( *p == _T('\r') )
801 *p = _T('\n');
802 }
803 }
804 }
805
806 if ( m_verRichEdit == 1 )
807 {
808 // convert to the canonical form - see comment below
809 str = wxTextFile::Translate(str, wxTextFileType_Unix);
810 }
811 }
812 //else: no text at all, leave the string empty
813 }
814 else
815 #endif // wxUSE_RICHEDIT
816 {
817 // retrieve all text
818 str = wxGetWindowText(GetHWND());
819
820 // need only a range?
821 if ( from < to )
822 {
823 str = str.Mid(from, to - from);
824 }
825
826 // WM_GETTEXT uses standard DOS CR+LF (\r\n) convention - convert to the
827 // canonical one (same one as above) for consistency with the other kinds
828 // of controls and, more importantly, with the other ports
829 str = wxTextFile::Translate(str, wxTextFileType_Unix);
830 }
831
832 return str;
833 }
834
835 void wxTextCtrl::DoSetValue(const wxString& value, int flags)
836 {
837 // if the text is long enough, it's faster to just set it instead of first
838 // comparing it with the old one (chances are that it will be different
839 // anyhow, this comparison is there to avoid flicker for small single-line
840 // edit controls mostly)
841 if ( (value.length() > 0x400) || (value != GetValue()) )
842 {
843 DoWriteText(value, flags /* doesn't include SelectionOnly here */);
844
845 // mark the control as being not dirty - we changed its text, not the
846 // user
847 DiscardEdits();
848
849 // for compatibility, don't move the cursor when doing SetValue()
850 SetInsertionPoint(0);
851 }
852 else // same text
853 {
854 // still reset the modified flag even if the value didn't really change
855 // because now it comes from the program and not the user (and do it
856 // before generating the event so that the event handler could get the
857 // expected value from IsModified())
858 DiscardEdits();
859
860 // still send an event for consistency
861 if (flags & SetValue_SendEvent)
862 SendUpdateEvent();
863 }
864 }
865
866 #if wxUSE_RICHEDIT && (!wxUSE_UNICODE || wxUSE_UNICODE_MSLU)
867
868 // TODO: using memcpy() would improve performance a lot for big amounts of text
869
870 DWORD CALLBACK
871 wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb)
872 {
873 *pcb = 0;
874
875 const wchar_t ** const ppws = (const wchar_t **)dwCookie;
876
877 wchar_t *wbuf = (wchar_t *)buf;
878 const wchar_t *wpc = *ppws;
879 while ( cb && *wpc )
880 {
881 *wbuf++ = *wpc++;
882
883 cb -= sizeof(wchar_t);
884 (*pcb) += sizeof(wchar_t);
885 }
886
887 *ppws = wpc;
888
889 return 0;
890 }
891
892 // helper struct used to pass parameters from wxTextCtrl to wxRichEditStreamOut
893 struct wxStreamOutData
894 {
895 wchar_t *wpc;
896 size_t len;
897 };
898
899 DWORD CALLBACK
900 wxRichEditStreamOut(DWORD_PTR dwCookie, BYTE *buf, LONG cb, LONG *pcb)
901 {
902 *pcb = 0;
903
904 wxStreamOutData *data = (wxStreamOutData *)dwCookie;
905
906 const wchar_t *wbuf = (const wchar_t *)buf;
907 wchar_t *wpc = data->wpc;
908 while ( cb )
909 {
910 wchar_t wch = *wbuf++;
911
912 // turn "\r\n" into "\n" on the fly
913 if ( wch != L'\r' )
914 *wpc++ = wch;
915 else
916 data->len--;
917
918 cb -= sizeof(wchar_t);
919 (*pcb) += sizeof(wchar_t);
920 }
921
922 data->wpc = wpc;
923
924 return 0;
925 }
926
927
928 #if wxUSE_UNICODE_MSLU
929 #define UNUSED_IF_MSLU(param)
930 #else
931 #define UNUSED_IF_MSLU(param) param
932 #endif
933
934 bool
935 wxTextCtrl::StreamIn(const wxString& value,
936 wxFontEncoding UNUSED_IF_MSLU(encoding),
937 bool selectionOnly)
938 {
939 #if wxUSE_UNICODE_MSLU
940 const wchar_t *wpc = value.c_str();
941 #else // !wxUSE_UNICODE_MSLU
942 wxCSConv conv(encoding);
943
944 const size_t len = conv.MB2WC(NULL, value.mb_str(), value.length());
945
946 #if wxUSE_WCHAR_T
947 wxWCharBuffer wchBuf(len);
948 wchar_t *wpc = wchBuf.data();
949 #else
950 wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
951 wchar_t *wpc = wchBuf;
952 #endif
953
954 conv.MB2WC(wpc, value.mb_str(), value.length());
955 #endif // wxUSE_UNICODE_MSLU
956
957 // finally, stream it in the control
958 EDITSTREAM eds;
959 wxZeroMemory(eds);
960 eds.dwCookie = (DWORD)&wpc;
961 // the cast below is needed for broken (very) old mingw32 headers
962 eds.pfnCallback = (EDITSTREAMCALLBACK)wxRichEditStreamIn;
963
964 // same problem as in DoWriteText(): we can get multiple events here
965 UpdatesCountFilter ucf(m_updatesCount);
966
967 ::SendMessage(GetHwnd(), EM_STREAMIN,
968 SF_TEXT |
969 SF_UNICODE |
970 (selectionOnly ? SFF_SELECTION : 0),
971 (LPARAM)&eds);
972
973 // It's okay for EN_UPDATE to not be sent if the selection is empty and
974 // the text is empty, otherwise warn the programmer about it.
975 wxASSERT_MSG( ucf.GotUpdate() || ( !HasSelection() && value.empty() ),
976 _T("EM_STREAMIN didn't send EN_UPDATE?") );
977
978 if ( eds.dwError )
979 {
980 wxLogLastError(_T("EM_STREAMIN"));
981 }
982
983 #if !wxUSE_WCHAR_T
984 free(wchBuf);
985 #endif // !wxUSE_WCHAR_T
986
987 return true;
988 }
989
990 #if !wxUSE_UNICODE_MSLU
991
992 wxString
993 wxTextCtrl::StreamOut(wxFontEncoding encoding, bool selectionOnly) const
994 {
995 wxString out;
996
997 const int len = GetWindowTextLength(GetHwnd());
998
999 #if wxUSE_WCHAR_T
1000 wxWCharBuffer wchBuf(len);
1001 wchar_t *wpc = wchBuf.data();
1002 #else
1003 wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
1004 wchar_t *wpc = wchBuf;
1005 #endif
1006
1007 wxStreamOutData data;
1008 data.wpc = wpc;
1009 data.len = len;
1010
1011 EDITSTREAM eds;
1012 wxZeroMemory(eds);
1013 eds.dwCookie = (DWORD)&data;
1014 eds.pfnCallback = wxRichEditStreamOut;
1015
1016 ::SendMessage
1017 (
1018 GetHwnd(),
1019 EM_STREAMOUT,
1020 SF_TEXT | SF_UNICODE | (selectionOnly ? SFF_SELECTION : 0),
1021 (LPARAM)&eds
1022 );
1023
1024 if ( eds.dwError )
1025 {
1026 wxLogLastError(_T("EM_STREAMOUT"));
1027 }
1028 else // streamed out ok
1029 {
1030 // NUL-terminate the string because its length could have been
1031 // decreased by wxRichEditStreamOut
1032 *(wchBuf.data() + data.len) = L'\0';
1033
1034 // now convert to the given encoding (this is a possibly lossful
1035 // conversion but what else can we do)
1036 wxCSConv conv(encoding);
1037 size_t lenNeeded = conv.WC2MB(NULL, wchBuf, 0);
1038 if ( lenNeeded++ )
1039 {
1040 conv.WC2MB(wxStringBuffer(out, lenNeeded), wchBuf, lenNeeded);
1041 }
1042 }
1043
1044 #if !wxUSE_WCHAR_T
1045 free(wchBuf);
1046 #endif // !wxUSE_WCHAR_T
1047
1048 return out;
1049 }
1050
1051 #endif // !wxUSE_UNICODE_MSLU
1052
1053 #endif // wxUSE_RICHEDIT
1054
1055 void wxTextCtrl::WriteText(const wxString& value)
1056 {
1057 DoWriteText(value);
1058 }
1059
1060 void wxTextCtrl::DoWriteText(const wxString& value, int flags)
1061 {
1062 bool selectionOnly = (flags & SetValue_SelectionOnly) != 0;
1063 wxString valueDos;
1064 if ( m_windowStyle & wxTE_MULTILINE )
1065 valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
1066 else
1067 valueDos = value;
1068
1069 #if wxUSE_RICHEDIT
1070 // there are several complications with the rich edit controls here
1071 bool done = false;
1072 if ( IsRich() )
1073 {
1074 // first, ensure that the new text will be in the default style
1075 if ( !m_defaultStyle.IsDefault() )
1076 {
1077 long start, end;
1078 GetSelection(&start, &end);
1079 SetStyle(start, end, m_defaultStyle);
1080 }
1081
1082 #if wxUSE_UNICODE_MSLU
1083 // RichEdit doesn't have Unicode version of EM_REPLACESEL on Win9x,
1084 // but EM_STREAMIN works
1085 if ( wxUsingUnicowsDll() && GetRichVersion() > 1 )
1086 {
1087 done = StreamIn(valueDos, wxFONTENCODING_SYSTEM, selectionOnly);
1088 }
1089 #endif // wxUSE_UNICODE_MSLU
1090
1091 #if !wxUSE_UNICODE
1092 // next check if the text we're inserting must be shown in a non
1093 // default charset -- this only works for RichEdit > 1.0
1094 if ( GetRichVersion() > 1 )
1095 {
1096 wxFont font = m_defaultStyle.GetFont();
1097 if ( !font.Ok() )
1098 font = GetFont();
1099
1100 if ( font.Ok() )
1101 {
1102 wxFontEncoding encoding = font.GetEncoding();
1103 if ( encoding != wxFONTENCODING_SYSTEM )
1104 {
1105 // we have to use EM_STREAMIN to force richedit control 2.0+
1106 // to show any text in the non default charset -- otherwise
1107 // it thinks it knows better than we do and always shows it
1108 // in the default one
1109 done = StreamIn(valueDos, encoding, selectionOnly);
1110 }
1111 }
1112 }
1113 #endif // !wxUSE_UNICODE
1114 }
1115
1116 if ( !done )
1117 #endif // wxUSE_RICHEDIT
1118 {
1119 // in some cases we get 2 EN_CHANGE notifications after the SendMessage
1120 // call (this happens for plain EDITs with EM_REPLACESEL and under some
1121 // -- undetermined -- conditions with rich edit) and sometimes we don't
1122 // get any events at all (plain EDIT with WM_SETTEXT), so ensure that
1123 // we generate exactly one of them by ignoring all but the first one in
1124 // SendUpdateEvent() and generating one ourselves if we hadn't got any
1125 // notifications from Windows
1126 if ( !(flags & SetValue_SendEvent) )
1127 m_updatesCount = -2; // suppress any update event
1128
1129 UpdatesCountFilter ucf(m_updatesCount);
1130
1131 ::SendMessage(GetHwnd(), selectionOnly ? EM_REPLACESEL : WM_SETTEXT,
1132 // EM_REPLACESEL takes 1 to indicate the operation should be redoable
1133 selectionOnly ? 1 : 0, (LPARAM)valueDos.wx_str());
1134
1135 if ( !ucf.GotUpdate() && (flags & SetValue_SendEvent) )
1136 {
1137 SendUpdateEvent();
1138 }
1139 }
1140 }
1141
1142 void wxTextCtrl::AppendText(const wxString& text)
1143 {
1144 SetInsertionPointEnd();
1145
1146 WriteText(text);
1147
1148 #if wxUSE_RICHEDIT
1149 // don't do this if we're frozen, saves some time
1150 if ( !IsFrozen() && IsMultiLine() && GetRichVersion() > 1 )
1151 {
1152 // setting the caret to the end and showing it simply doesn't work for
1153 // RichEdit 2.0 -- force it to still do what we want
1154 ::SendMessage(GetHwnd(), EM_LINESCROLL, 0, GetNumberOfLines());
1155 }
1156 #endif // wxUSE_RICHEDIT
1157 }
1158
1159 void wxTextCtrl::Clear()
1160 {
1161 ::SetWindowText(GetHwnd(), wxEmptyString);
1162
1163 #if wxUSE_RICHEDIT
1164 if ( !IsRich() )
1165 #endif // wxUSE_RICHEDIT
1166 {
1167 // rich edit controls send EN_UPDATE from WM_SETTEXT handler themselves
1168 // but the normal ones don't -- make Clear() behaviour consistent by
1169 // always sending this event
1170
1171 // Windows already sends an update event for single-line
1172 // controls.
1173 if ( m_windowStyle & wxTE_MULTILINE )
1174 SendUpdateEvent();
1175 }
1176 }
1177
1178 #ifdef __WIN32__
1179
1180 bool wxTextCtrl::EmulateKeyPress(const wxKeyEvent& event)
1181 {
1182 SetFocus();
1183
1184 size_t lenOld = GetValue().length();
1185
1186 wxUint32 code = event.GetRawKeyCode();
1187 ::keybd_event((BYTE)code, 0, 0 /* key press */, 0);
1188 ::keybd_event((BYTE)code, 0, KEYEVENTF_KEYUP, 0);
1189
1190 // assume that any alphanumeric key changes the total number of characters
1191 // in the control - this should work in 99% of cases
1192 return GetValue().length() != lenOld;
1193 }
1194
1195 #endif // __WIN32__
1196
1197 // ----------------------------------------------------------------------------
1198 // Clipboard operations
1199 // ----------------------------------------------------------------------------
1200
1201 void wxTextCtrl::Copy()
1202 {
1203 if (CanCopy())
1204 {
1205 ::SendMessage(GetHwnd(), WM_COPY, 0, 0L);
1206 }
1207 }
1208
1209 void wxTextCtrl::Cut()
1210 {
1211 if (CanCut())
1212 {
1213 ::SendMessage(GetHwnd(), WM_CUT, 0, 0L);
1214 }
1215 }
1216
1217 void wxTextCtrl::Paste()
1218 {
1219 if (CanPaste())
1220 {
1221 ::SendMessage(GetHwnd(), WM_PASTE, 0, 0L);
1222 }
1223 }
1224
1225 bool wxTextCtrl::HasSelection() const
1226 {
1227 long from, to;
1228 GetSelection(&from, &to);
1229 return from != to;
1230 }
1231
1232 bool wxTextCtrl::CanCopy() const
1233 {
1234 // Can copy if there's a selection
1235 return HasSelection();
1236 }
1237
1238 bool wxTextCtrl::CanCut() const
1239 {
1240 return CanCopy() && IsEditable();
1241 }
1242
1243 bool wxTextCtrl::CanPaste() const
1244 {
1245 if ( !IsEditable() )
1246 return false;
1247
1248 #if wxUSE_RICHEDIT
1249 if ( IsRich() )
1250 {
1251 UINT cf = 0; // 0 == any format
1252
1253 return ::SendMessage(GetHwnd(), EM_CANPASTE, cf, 0) != 0;
1254 }
1255 #endif // wxUSE_RICHEDIT
1256
1257 // Standard edit control: check for straight text on clipboard
1258 if ( !::OpenClipboard(GetHwndOf(wxTheApp->GetTopWindow())) )
1259 return false;
1260
1261 bool isTextAvailable = ::IsClipboardFormatAvailable(CF_TEXT) != 0;
1262 ::CloseClipboard();
1263
1264 return isTextAvailable;
1265 }
1266
1267 // ----------------------------------------------------------------------------
1268 // Accessors
1269 // ----------------------------------------------------------------------------
1270
1271 void wxTextCtrl::SetEditable(bool editable)
1272 {
1273 HWND hWnd = GetHwnd();
1274 ::SendMessage(hWnd, EM_SETREADONLY, (WPARAM)!editable, (LPARAM)0L);
1275 }
1276
1277 void wxTextCtrl::SetInsertionPoint(long pos)
1278 {
1279 DoSetSelection(pos, pos);
1280 }
1281
1282 void wxTextCtrl::SetInsertionPointEnd()
1283 {
1284 // we must not do anything if the caret is already there because calling
1285 // SetInsertionPoint() thaws the controls if Freeze() had been called even
1286 // if it doesn't actually move the caret anywhere and so the simple fact of
1287 // doing it results in horrible flicker when appending big amounts of text
1288 // to the control in a few chunks (see DoAddText() test in the text sample)
1289 const wxTextPos lastPosition = GetLastPosition();
1290 if ( GetInsertionPoint() == lastPosition )
1291 {
1292 return;
1293 }
1294
1295 long pos;
1296
1297 #if wxUSE_RICHEDIT
1298 if ( m_verRichEdit == 1 )
1299 {
1300 // we don't have to waste time calling GetLastPosition() in this case
1301 pos = -1;
1302 }
1303 else // !RichEdit 1.0
1304 #endif // wxUSE_RICHEDIT
1305 {
1306 pos = lastPosition;
1307 }
1308
1309 SetInsertionPoint(pos);
1310 }
1311
1312 long wxTextCtrl::GetInsertionPoint() const
1313 {
1314 #if wxUSE_RICHEDIT
1315 if ( IsRich() )
1316 {
1317 CHARRANGE range;
1318 range.cpMin = 0;
1319 range.cpMax = 0;
1320 ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
1321 return range.cpMin;
1322 }
1323 #endif // wxUSE_RICHEDIT
1324
1325 DWORD Pos = (DWORD)::SendMessage(GetHwnd(), EM_GETSEL, 0, 0L);
1326 return Pos & 0xFFFF;
1327 }
1328
1329 wxTextPos wxTextCtrl::GetLastPosition() const
1330 {
1331 int numLines = GetNumberOfLines();
1332 long posStartLastLine = XYToPosition(0, numLines - 1);
1333
1334 long lenLastLine = GetLengthOfLineContainingPos(posStartLastLine);
1335
1336 return posStartLastLine + lenLastLine;
1337 }
1338
1339 // If the return values from and to are the same, there is no
1340 // selection.
1341 void wxTextCtrl::GetSelection(long* from, long* to) const
1342 {
1343 #if wxUSE_RICHEDIT
1344 if ( IsRich() )
1345 {
1346 CHARRANGE charRange;
1347 ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &charRange);
1348
1349 *from = charRange.cpMin;
1350 *to = charRange.cpMax;
1351 }
1352 else
1353 #endif // !wxUSE_RICHEDIT
1354 {
1355 DWORD dwStart, dwEnd;
1356 ::SendMessage(GetHwnd(), EM_GETSEL, (WPARAM)&dwStart, (LPARAM)&dwEnd);
1357
1358 *from = dwStart;
1359 *to = dwEnd;
1360 }
1361 }
1362
1363 bool wxTextCtrl::IsEditable() const
1364 {
1365 // strangely enough, we may be called before the control is created: our
1366 // own Create() calls MSWGetStyle() which calls AcceptsFocus() which calls
1367 // us
1368 if ( !m_hWnd )
1369 return true;
1370
1371 long style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1372
1373 return (style & ES_READONLY) == 0;
1374 }
1375
1376 // ----------------------------------------------------------------------------
1377 // selection
1378 // ----------------------------------------------------------------------------
1379
1380 void wxTextCtrl::SetSelection(long from, long to)
1381 {
1382 // if from and to are both -1, it means (in wxWidgets) that all text should
1383 // be selected - translate into Windows convention
1384 if ( (from == -1) && (to == -1) )
1385 {
1386 from = 0;
1387 to = -1;
1388 }
1389
1390 DoSetSelection(from, to);
1391 }
1392
1393 void wxTextCtrl::DoSetSelection(long from, long to, bool scrollCaret)
1394 {
1395 HWND hWnd = GetHwnd();
1396
1397 #if wxUSE_RICHEDIT
1398 if ( IsRich() )
1399 {
1400 CHARRANGE range;
1401 range.cpMin = from;
1402 range.cpMax = to;
1403 ::SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM) &range);
1404 }
1405 else
1406 #endif // wxUSE_RICHEDIT
1407 {
1408 ::SendMessage(hWnd, EM_SETSEL, (WPARAM)from, (LPARAM)to);
1409 }
1410
1411 if ( scrollCaret && !IsFrozen() )
1412 {
1413 #if wxUSE_RICHEDIT
1414 // richedit 3.0 (i.e. the version living in riched20.dll distributed
1415 // with Windows 2000 and beyond) doesn't honour EM_SCROLLCARET when
1416 // emulating richedit 2.0 unless the control has focus or ECO_NOHIDESEL
1417 // option is set (but it does work ok in richedit 1.0 mode...)
1418 //
1419 // so to make it work we either need to give focus to it here which
1420 // will probably create many problems (dummy focus events; window
1421 // containing the text control being brought to foreground
1422 // unexpectedly; ...) or to temporarily set ECO_NOHIDESEL which may
1423 // create other problems too -- and in fact it does because if we turn
1424 // on/off this style while appending the text to the control, the
1425 // vertical scrollbar never appears in it even if we append tons of
1426 // text and to work around this the only solution I found was to use
1427 // ES_DISABLENOSCROLL
1428 //
1429 // this is very ugly but I don't see any other way to make this work
1430 long style = 0;
1431 if ( GetRichVersion() > 1 )
1432 {
1433 if ( !HasFlag(wxTE_NOHIDESEL) )
1434 {
1435 // setting ECO_NOHIDESEL also sets WS_VISIBLE and possibly
1436 // others, remember the style so we can reset it later if needed
1437 style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1438 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1439 ECOOP_OR, ECO_NOHIDESEL);
1440 }
1441 //else: everything is already ok
1442 }
1443 #endif // wxUSE_RICHEDIT
1444
1445 ::SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
1446
1447 #if wxUSE_RICHEDIT
1448 // restore ECO_NOHIDESEL if we changed it
1449 if ( GetRichVersion() > 1 && !HasFlag(wxTE_NOHIDESEL) )
1450 {
1451 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1452 ECOOP_AND, ~ECO_NOHIDESEL);
1453 if ( style != ::GetWindowLong(GetHwnd(), GWL_STYLE) )
1454 ::SetWindowLong(GetHwnd(), GWL_STYLE, style);
1455 }
1456 #endif // wxUSE_RICHEDIT
1457 }
1458 }
1459
1460 // ----------------------------------------------------------------------------
1461 // Working with files
1462 // ----------------------------------------------------------------------------
1463
1464 bool wxTextCtrl::DoLoadFile(const wxString& file, int fileType)
1465 {
1466 if ( wxTextCtrlBase::DoLoadFile(file, fileType) )
1467 {
1468 // update the size limit if needed
1469 AdjustSpaceLimit();
1470
1471 return true;
1472 }
1473
1474 return false;
1475 }
1476
1477 // ----------------------------------------------------------------------------
1478 // Editing
1479 // ----------------------------------------------------------------------------
1480
1481 void wxTextCtrl::Replace(long from, long to, const wxString& value)
1482 {
1483 // Set selection and remove it
1484 DoSetSelection(from, to, false /* don't scroll caret into view */);
1485
1486 DoWriteText(value);
1487 }
1488
1489 void wxTextCtrl::Remove(long from, long to)
1490 {
1491 Replace(from, to, wxEmptyString);
1492 }
1493
1494 bool wxTextCtrl::IsModified() const
1495 {
1496 return ::SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0;
1497 }
1498
1499 void wxTextCtrl::MarkDirty()
1500 {
1501 ::SendMessage(GetHwnd(), EM_SETMODIFY, TRUE, 0L);
1502 }
1503
1504 void wxTextCtrl::DiscardEdits()
1505 {
1506 ::SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0L);
1507 }
1508
1509 int wxTextCtrl::GetNumberOfLines() const
1510 {
1511 return (int)::SendMessage(GetHwnd(), EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0);
1512 }
1513
1514 // ----------------------------------------------------------------------------
1515 // Positions <-> coords
1516 // ----------------------------------------------------------------------------
1517
1518 long wxTextCtrl::XYToPosition(long x, long y) const
1519 {
1520 // This gets the char index for the _beginning_ of this line
1521 long charIndex = ::SendMessage(GetHwnd(), EM_LINEINDEX, (WPARAM)y, (LPARAM)0);
1522
1523 return charIndex + x;
1524 }
1525
1526 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
1527 {
1528 HWND hWnd = GetHwnd();
1529
1530 // This gets the line number containing the character
1531 long lineNo;
1532 #if wxUSE_RICHEDIT
1533 if ( IsRich() )
1534 {
1535 lineNo = ::SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, (LPARAM)pos);
1536 }
1537 else
1538 #endif // wxUSE_RICHEDIT
1539 {
1540 lineNo = ::SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, 0);
1541 }
1542
1543 if ( lineNo == -1 )
1544 {
1545 // no such line
1546 return false;
1547 }
1548
1549 // This gets the char index for the _beginning_ of this line
1550 long charIndex = ::SendMessage(hWnd, EM_LINEINDEX, (WPARAM)lineNo, (LPARAM)0);
1551 if ( charIndex == -1 )
1552 {
1553 return false;
1554 }
1555
1556 // The X position must therefore be the different between pos and charIndex
1557 if ( x )
1558 *x = pos - charIndex;
1559 if ( y )
1560 *y = lineNo;
1561
1562 return true;
1563 }
1564
1565 wxTextCtrlHitTestResult
1566 wxTextCtrl::HitTest(const wxPoint& pt, long *posOut) const
1567 {
1568 // first get the position from Windows
1569 LPARAM lParam;
1570
1571 #if wxUSE_RICHEDIT
1572 POINTL ptl;
1573 if ( IsRich() )
1574 {
1575 // for rich edit controls the position is passed iva the struct fields
1576 ptl.x = pt.x;
1577 ptl.y = pt.y;
1578 lParam = (LPARAM)&ptl;
1579 }
1580 else
1581 #endif // wxUSE_RICHEDIT
1582 {
1583 // for the plain ones, we are limited to 16 bit positions which are
1584 // combined in a single 32 bit value
1585 lParam = MAKELPARAM(pt.x, pt.y);
1586 }
1587
1588 LRESULT pos = ::SendMessage(GetHwnd(), EM_CHARFROMPOS, 0, lParam);
1589
1590 if ( pos == -1 )
1591 {
1592 // this seems to indicate an error...
1593 return wxTE_HT_UNKNOWN;
1594 }
1595
1596 #if wxUSE_RICHEDIT
1597 if ( !IsRich() )
1598 #endif // wxUSE_RICHEDIT
1599 {
1600 // for plain EDIT controls the higher word contains something else
1601 pos = LOWORD(pos);
1602 }
1603
1604
1605 // next determine where it is relatively to our point: EM_CHARFROMPOS
1606 // always returns the closest character but we need to be more precise, so
1607 // double check that we really are where it pretends
1608 POINTL ptReal;
1609
1610 #if wxUSE_RICHEDIT
1611 // FIXME: we need to distinguish between richedit 2 and 3 here somehow but
1612 // we don't know how to do it
1613 if ( IsRich() )
1614 {
1615 ::SendMessage(GetHwnd(), EM_POSFROMCHAR, (WPARAM)&ptReal, pos);
1616 }
1617 else
1618 #endif // wxUSE_RICHEDIT
1619 {
1620 LRESULT lRc = ::SendMessage(GetHwnd(), EM_POSFROMCHAR, pos, 0);
1621
1622 if ( lRc == -1 )
1623 {
1624 // this is apparently returned when pos corresponds to the last
1625 // position
1626 ptReal.x =
1627 ptReal.y = 0;
1628 }
1629 else
1630 {
1631 ptReal.x = LOWORD(lRc);
1632 ptReal.y = HIWORD(lRc);
1633 }
1634 }
1635
1636 wxTextCtrlHitTestResult rc;
1637
1638 if ( pt.y > ptReal.y + GetCharHeight() )
1639 rc = wxTE_HT_BELOW;
1640 else if ( pt.x > ptReal.x + GetCharWidth() )
1641 rc = wxTE_HT_BEYOND;
1642 else
1643 rc = wxTE_HT_ON_TEXT;
1644
1645 if ( posOut )
1646 *posOut = pos;
1647
1648 return rc;
1649 }
1650
1651 // ----------------------------------------------------------------------------
1652 //
1653 // ----------------------------------------------------------------------------
1654
1655 void wxTextCtrl::ShowPosition(long pos)
1656 {
1657 HWND hWnd = GetHwnd();
1658
1659 // To scroll to a position, we pass the number of lines and characters
1660 // to scroll *by*. This means that we need to:
1661 // (1) Find the line position of the current line.
1662 // (2) Find the line position of pos.
1663 // (3) Scroll by (pos - current).
1664 // For now, ignore the horizontal scrolling.
1665
1666 // Is this where scrolling is relative to - the line containing the caret?
1667 // Or is the first visible line??? Try first visible line.
1668 // int currentLineLineNo1 = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)-1, (LPARAM)0L);
1669
1670 int currentLineLineNo = (int)::SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, (WPARAM)0, (LPARAM)0L);
1671
1672 int specifiedLineLineNo = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, (LPARAM)0L);
1673
1674 int linesToScroll = specifiedLineLineNo - currentLineLineNo;
1675
1676 if (linesToScroll != 0)
1677 (void)::SendMessage(hWnd, EM_LINESCROLL, (WPARAM)0, (LPARAM)linesToScroll);
1678 }
1679
1680 long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const
1681 {
1682 return ::SendMessage(GetHwnd(), EM_LINELENGTH, (WPARAM)pos, 0);
1683 }
1684
1685 int wxTextCtrl::GetLineLength(long lineNo) const
1686 {
1687 long pos = XYToPosition(0, lineNo);
1688
1689 return GetLengthOfLineContainingPos(pos);
1690 }
1691
1692 wxString wxTextCtrl::GetLineText(long lineNo) const
1693 {
1694 size_t len = (size_t)GetLineLength(lineNo) + 1;
1695
1696 // there must be at least enough place for the length WORD in the
1697 // buffer
1698 len += sizeof(WORD);
1699
1700 wxString str;
1701 {
1702 wxStringBufferLength tmp(str, len);
1703 wxChar *buf = tmp;
1704
1705 *(WORD *)buf = (WORD)len;
1706 len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf);
1707
1708 #if wxUSE_RICHEDIT
1709 if ( IsRich() )
1710 {
1711 // remove the '\r' returned by the rich edit control, the user code
1712 // should never see it
1713 if ( buf[len - 2] == _T('\r') && buf[len - 1] == _T('\n') )
1714 {
1715 // richedit 1.0 uses "\r\n" as line terminator, so remove "\r"
1716 // here and "\n" below
1717 buf[len - 2] = _T('\n');
1718 len--;
1719 }
1720 else if ( buf[len - 1] == _T('\r') )
1721 {
1722 // richedit 2.0+ uses only "\r", replace it with "\n"
1723 buf[len - 1] = _T('\n');
1724 }
1725 }
1726 #endif // wxUSE_RICHEDIT
1727
1728 // remove the '\n' at the end, if any (this is how this function is
1729 // supposed to work according to the docs)
1730 if ( buf[len - 1] == _T('\n') )
1731 {
1732 len--;
1733 }
1734
1735 buf[len] = 0;
1736 tmp.SetLength(len);
1737 }
1738
1739 return str;
1740 }
1741
1742 void wxTextCtrl::SetMaxLength(unsigned long len)
1743 {
1744 #if wxUSE_RICHEDIT
1745 if ( IsRich() )
1746 {
1747 ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, len ? len : 0x7fffffff);
1748 }
1749 else
1750 #endif // wxUSE_RICHEDIT
1751 {
1752 if ( len >= 0xffff )
1753 {
1754 // this will set it to a platform-dependent maximum (much more
1755 // than 64Kb under NT)
1756 len = 0;
1757 }
1758
1759 ::SendMessage(GetHwnd(), EM_LIMITTEXT, len, 0);
1760 }
1761 }
1762
1763 // ----------------------------------------------------------------------------
1764 // Undo/redo
1765 // ----------------------------------------------------------------------------
1766
1767 void wxTextCtrl::Undo()
1768 {
1769 if (CanUndo())
1770 {
1771 ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1772 }
1773 }
1774
1775 void wxTextCtrl::Redo()
1776 {
1777 if (CanRedo())
1778 {
1779 #if wxUSE_RICHEDIT
1780 if (GetRichVersion() > 1)
1781 ::SendMessage(GetHwnd(), EM_REDO, 0, 0);
1782 else
1783 #endif
1784 // Same as Undo, since Undo undoes the undo, i.e. a redo.
1785 ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1786 }
1787 }
1788
1789 bool wxTextCtrl::CanUndo() const
1790 {
1791 return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1792 }
1793
1794 bool wxTextCtrl::CanRedo() const
1795 {
1796 #if wxUSE_RICHEDIT
1797 if (GetRichVersion() > 1)
1798 return ::SendMessage(GetHwnd(), EM_CANREDO, 0, 0) != 0;
1799 else
1800 #endif
1801 return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1802 }
1803
1804 // ----------------------------------------------------------------------------
1805 // caret handling (Windows only)
1806 // ----------------------------------------------------------------------------
1807
1808 bool wxTextCtrl::ShowNativeCaret(bool show)
1809 {
1810 if ( show != m_isNativeCaretShown )
1811 {
1812 if ( !(show ? ::ShowCaret(GetHwnd()) : ::HideCaret(GetHwnd())) )
1813 {
1814 // not an error, may simply indicate that it's not shown/hidden
1815 // yet (i.e. it had been hidden/showh 2 times before)
1816 return false;
1817 }
1818
1819 m_isNativeCaretShown = show;
1820 }
1821
1822 return true;
1823 }
1824
1825 // ----------------------------------------------------------------------------
1826 // implemenation details
1827 // ----------------------------------------------------------------------------
1828
1829 void wxTextCtrl::Command(wxCommandEvent & event)
1830 {
1831 SetValue(event.GetString());
1832 ProcessCommand (event);
1833 }
1834
1835 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
1836 {
1837 // By default, load the first file into the text window.
1838 if (event.GetNumberOfFiles() > 0)
1839 {
1840 LoadFile(event.GetFiles()[0]);
1841 }
1842 }
1843
1844 // ----------------------------------------------------------------------------
1845 // kbd input processing
1846 // ----------------------------------------------------------------------------
1847
1848 bool wxTextCtrl::MSWShouldPreProcessMessage(WXMSG* msg)
1849 {
1850 // check for our special keys here: if we don't do it and the parent frame
1851 // uses them as accelerators, they wouldn't work at all, so we disable
1852 // usual preprocessing for them
1853 if ( msg->message == WM_KEYDOWN )
1854 {
1855 const WPARAM vkey = msg->wParam;
1856 if ( HIWORD(msg->lParam) & KF_ALTDOWN )
1857 {
1858 // Alt-Backspace is accelerator for "Undo"
1859 if ( vkey == VK_BACK )
1860 return false;
1861 }
1862 else // no Alt
1863 {
1864 // we want to process some Ctrl-foo and Shift-bar but no key
1865 // combinations without either Ctrl or Shift nor with both of them
1866 // pressed
1867 const int ctrl = wxIsCtrlDown(),
1868 shift = wxIsShiftDown();
1869 switch ( ctrl + shift )
1870 {
1871 default:
1872 wxFAIL_MSG( _T("how many modifiers have we got?") );
1873 // fall through
1874
1875 case 0:
1876 if ( IsMultiLine() && vkey == VK_RETURN )
1877 return false;
1878 // fall through
1879 case 2:
1880 break;
1881
1882 case 1:
1883 // either Ctrl or Shift pressed
1884 if ( ctrl )
1885 {
1886 switch ( vkey )
1887 {
1888 case 'C':
1889 case 'V':
1890 case 'X':
1891 case VK_INSERT:
1892 case VK_DELETE:
1893 case VK_HOME:
1894 case VK_END:
1895 return false;
1896 }
1897 }
1898 else // Shift is pressed
1899 {
1900 if ( vkey == VK_INSERT || vkey == VK_DELETE )
1901 return false;
1902 }
1903 }
1904 }
1905 }
1906
1907 return wxControl::MSWShouldPreProcessMessage(msg);
1908 }
1909
1910 void wxTextCtrl::OnChar(wxKeyEvent& event)
1911 {
1912 switch ( event.GetKeyCode() )
1913 {
1914 case WXK_RETURN:
1915 {
1916 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1917 InitCommandEvent(event);
1918 event.SetString(GetValue());
1919 if ( GetEventHandler()->ProcessEvent(event) )
1920 if ( !HasFlag(wxTE_MULTILINE) )
1921 return;
1922 //else: multiline controls need Enter for themselves
1923 }
1924 break;
1925
1926 case WXK_TAB:
1927 // ok, so this is getting absolutely ridiculous but I don't see
1928 // any other way to fix this bug: when a multiline text control is
1929 // inside a wxFrame, we need to generate the navigation event as
1930 // otherwise nothing happens at all, but when the same control is
1931 // created inside a dialog, IsDialogMessage() *does* switch focus
1932 // all by itself and so if we do it here as well, it is advanced
1933 // twice and goes to the next control... to prevent this from
1934 // happening we're doing this ugly check, the logic being that if
1935 // we don't have focus then it had been already changed to the next
1936 // control
1937 //
1938 // the right thing to do would, of course, be to understand what
1939 // the hell is IsDialogMessage() doing but this is beyond my feeble
1940 // forces at the moment unfortunately
1941 if ( !(m_windowStyle & wxTE_PROCESS_TAB))
1942 {
1943 if ( FindFocus() == this )
1944 {
1945 int flags = 0;
1946 if (!event.ShiftDown())
1947 flags |= wxNavigationKeyEvent::IsForward ;
1948 if (event.ControlDown())
1949 flags |= wxNavigationKeyEvent::WinChange ;
1950 if (Navigate(flags))
1951 return;
1952 }
1953 }
1954 else
1955 {
1956 // Insert tab since calling the default Windows handler
1957 // doesn't seem to do it
1958 WriteText(wxT("\t"));
1959 return;
1960 }
1961 break;
1962 }
1963
1964 // no, we didn't process it
1965 event.Skip();
1966 }
1967
1968 WXLRESULT wxTextCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
1969 {
1970 WXLRESULT lRc = wxTextCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
1971
1972 switch ( nMsg )
1973 {
1974 case WM_GETDLGCODE:
1975 {
1976 // we always want the chars and the arrows: the arrows for
1977 // navigation and the chars because we want Ctrl-C to work even
1978 // in a read only control
1979 long lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
1980
1981 if ( IsEditable() )
1982 {
1983 // we may have several different cases:
1984 // 1. normal: both TAB and ENTER are used for navigation
1985 // 2. ctrl wants TAB for itself: ENTER is used to pass to
1986 // the next control in the dialog
1987 // 3. ctrl wants ENTER for itself: TAB is used for dialog
1988 // navigation
1989 // 4. ctrl wants both TAB and ENTER: Ctrl-ENTER is used to
1990 // go to the next control (we need some way to do it)
1991
1992 // multiline controls should always get ENTER for themselves
1993 if ( HasFlag(wxTE_PROCESS_ENTER) || HasFlag(wxTE_MULTILINE) )
1994 lDlgCode |= DLGC_WANTMESSAGE;
1995
1996 if ( HasFlag(wxTE_PROCESS_TAB) )
1997 lDlgCode |= DLGC_WANTTAB;
1998
1999 lRc |= lDlgCode;
2000 }
2001 else // !editable
2002 {
2003 // NB: use "=", not "|=" as the base class version returns
2004 // the same flags is this state as usual (i.e.
2005 // including DLGC_WANTMESSAGE). This is strange (how
2006 // does it work in the native Win32 apps?) but for now
2007 // live with it.
2008 lRc = lDlgCode;
2009 }
2010 }
2011 break;
2012
2013 case WM_CUT:
2014 case WM_COPY:
2015 case WM_PASTE:
2016 if ( HandleClipboardEvent(nMsg) )
2017 lRc = 0;
2018 break;
2019 }
2020
2021 return lRc;
2022 }
2023
2024 // ----------------------------------------------------------------------------
2025 // text control event processing
2026 // ----------------------------------------------------------------------------
2027
2028 bool wxTextCtrl::SendUpdateEvent()
2029 {
2030 switch ( m_updatesCount )
2031 {
2032 case 0:
2033 // remember that we've got an update
2034 m_updatesCount++;
2035 break;
2036
2037 case 1:
2038 // we had already sent one event since the last control modification
2039 return false;
2040
2041 default:
2042 wxFAIL_MSG( _T("unexpected wxTextCtrl::m_updatesCount value") );
2043 // fall through
2044
2045 case -1:
2046 // we hadn't updated the control ourselves, this event comes from
2047 // the user, don't need to ignore it nor update the count
2048 break;
2049
2050 case -2:
2051 // the control was updated programmatically and we do NOT want to
2052 // send events
2053 return false;
2054 }
2055
2056 wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, GetId());
2057 InitCommandEvent(event);
2058
2059 return ProcessCommand(event);
2060 }
2061
2062 bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
2063 {
2064 switch ( param )
2065 {
2066 case EN_SETFOCUS:
2067 case EN_KILLFOCUS:
2068 {
2069 wxFocusEvent event(param == EN_KILLFOCUS ? wxEVT_KILL_FOCUS
2070 : wxEVT_SET_FOCUS,
2071 m_windowId);
2072 event.SetEventObject(this);
2073 GetEventHandler()->ProcessEvent(event);
2074 }
2075 break;
2076
2077 case EN_CHANGE:
2078 SendUpdateEvent();
2079 break;
2080
2081 case EN_MAXTEXT:
2082 // the text size limit has been hit -- try to increase it
2083 if ( !AdjustSpaceLimit() )
2084 {
2085 wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, m_windowId);
2086 InitCommandEvent(event);
2087 event.SetString(GetValue());
2088 ProcessCommand(event);
2089 }
2090 break;
2091
2092 // the other edit notification messages are not processed
2093 default:
2094 return false;
2095 }
2096
2097 // processed
2098 return true;
2099 }
2100
2101 WXHBRUSH wxTextCtrl::MSWControlColor(WXHDC hDC, WXHWND hWnd)
2102 {
2103 if ( !IsEnabled() && !HasFlag(wxTE_MULTILINE) )
2104 return MSWControlColorDisabled(hDC);
2105
2106 return wxTextCtrlBase::MSWControlColor(hDC, hWnd);
2107 }
2108
2109 bool wxTextCtrl::HasSpaceLimit(unsigned int *len) const
2110 {
2111 // HACK: we try to automatically extend the limit for the amount of text
2112 // to allow (interactively) entering more than 64Kb of text under
2113 // Win9x but we shouldn't reset the text limit which was previously
2114 // set explicitly with SetMaxLength()
2115 //
2116 // Unfortunately there is no EM_GETLIMITTEXTSETBYUSER and so we don't
2117 // know the limit we set (if any). We could solve this by storing the
2118 // limit we set in wxTextCtrl but to save space we prefer to simply
2119 // test here the actual limit value: we consider that SetMaxLength()
2120 // can only be called for small values while EN_MAXTEXT is only sent
2121 // for large values (in practice the default limit seems to be 30000
2122 // but make it smaller just to be on the safe side)
2123 *len = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
2124 return *len < 10001;
2125
2126 }
2127
2128 bool wxTextCtrl::AdjustSpaceLimit()
2129 {
2130 unsigned int limit;
2131 if ( HasSpaceLimit(&limit) )
2132 return false;
2133
2134 unsigned int len = ::GetWindowTextLength(GetHwnd());
2135 if ( len >= limit )
2136 {
2137 // increment in 32Kb chunks
2138 SetMaxLength(len + 0x8000);
2139 }
2140
2141 // we changed the limit
2142 return true;
2143 }
2144
2145 bool wxTextCtrl::AcceptsFocus() const
2146 {
2147 // we don't want focus if we can't be edited unless we're a multiline
2148 // control because then it might be still nice to get focus from keyboard
2149 // to be able to scroll it without mouse
2150 return (IsEditable() || IsMultiLine()) && wxControl::AcceptsFocus();
2151 }
2152
2153 wxSize wxTextCtrl::DoGetBestSize() const
2154 {
2155 int cx, cy;
2156 wxGetCharSize(GetHWND(), &cx, &cy, GetFont());
2157
2158 int wText = DEFAULT_ITEM_WIDTH;
2159
2160 int hText = cy;
2161 if ( m_windowStyle & wxTE_MULTILINE )
2162 {
2163 hText *= wxMax(wxMin(GetNumberOfLines(), 10), 2);
2164 }
2165 //else: for single line control everything is ok
2166
2167 // we have to add the adjustments for the control height only once, not
2168 // once per line, so do it after multiplication above
2169 hText += EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy) - cy;
2170
2171 return wxSize(wText, hText);
2172 }
2173
2174 // ----------------------------------------------------------------------------
2175 // standard handlers for standard edit menu events
2176 // ----------------------------------------------------------------------------
2177
2178 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
2179 {
2180 Cut();
2181 }
2182
2183 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
2184 {
2185 Copy();
2186 }
2187
2188 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
2189 {
2190 Paste();
2191 }
2192
2193 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
2194 {
2195 Undo();
2196 }
2197
2198 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
2199 {
2200 Redo();
2201 }
2202
2203 void wxTextCtrl::OnDelete(wxCommandEvent& WXUNUSED(event))
2204 {
2205 long from, to;
2206 GetSelection(& from, & to);
2207 if (from != -1 && to != -1)
2208 Remove(from, to);
2209 }
2210
2211 void wxTextCtrl::OnSelectAll(wxCommandEvent& WXUNUSED(event))
2212 {
2213 SetSelection(-1, -1);
2214 }
2215
2216 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
2217 {
2218 event.Enable( CanCut() );
2219 }
2220
2221 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
2222 {
2223 event.Enable( CanCopy() );
2224 }
2225
2226 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
2227 {
2228 event.Enable( CanPaste() );
2229 }
2230
2231 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
2232 {
2233 event.Enable( CanUndo() );
2234 }
2235
2236 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
2237 {
2238 event.Enable( CanRedo() );
2239 }
2240
2241 void wxTextCtrl::OnUpdateDelete(wxUpdateUIEvent& event)
2242 {
2243 long from, to;
2244 GetSelection(& from, & to);
2245 event.Enable(from != -1 && to != -1 && from != to && IsEditable()) ;
2246 }
2247
2248 void wxTextCtrl::OnUpdateSelectAll(wxUpdateUIEvent& event)
2249 {
2250 event.Enable(GetLastPosition() > 0);
2251 }
2252
2253 void wxTextCtrl::OnContextMenu(wxContextMenuEvent& event)
2254 {
2255 #if wxUSE_RICHEDIT
2256 if (IsRich())
2257 {
2258 if (!m_privateContextMenu)
2259 {
2260 m_privateContextMenu = new wxMenu;
2261 m_privateContextMenu->Append(wxID_UNDO, _("&Undo"));
2262 m_privateContextMenu->Append(wxID_REDO, _("&Redo"));
2263 m_privateContextMenu->AppendSeparator();
2264 m_privateContextMenu->Append(wxID_CUT, _("Cu&t"));
2265 m_privateContextMenu->Append(wxID_COPY, _("&Copy"));
2266 m_privateContextMenu->Append(wxID_PASTE, _("&Paste"));
2267 m_privateContextMenu->Append(wxID_CLEAR, _("&Delete"));
2268 m_privateContextMenu->AppendSeparator();
2269 m_privateContextMenu->Append(wxID_SELECTALL, _("Select &All"));
2270 }
2271 PopupMenu(m_privateContextMenu);
2272 return;
2273 }
2274 else
2275 #endif
2276 event.Skip();
2277 }
2278
2279 void wxTextCtrl::OnSetFocus(wxFocusEvent& WXUNUSED(event))
2280 {
2281 // be sure the caret remains invisible if the user had hidden it
2282 if ( !m_isNativeCaretShown )
2283 {
2284 ::HideCaret(GetHwnd());
2285 }
2286 }
2287
2288 // ----------------------------------------------------------------------------
2289 // Default colors for MSW text control
2290 //
2291 // Set default background color to the native white instead of
2292 // the default wxSYS_COLOUR_BTNFACE (is triggered with wxNullColour).
2293 // ----------------------------------------------------------------------------
2294
2295 wxVisualAttributes wxTextCtrl::GetDefaultAttributes() const
2296 {
2297 wxVisualAttributes attrs;
2298 attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
2299 attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
2300 attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW); //white
2301
2302 return attrs;
2303 }
2304
2305 // the rest of the file only deals with the rich edit controls
2306 #if wxUSE_RICHEDIT
2307
2308 // ----------------------------------------------------------------------------
2309 // EN_LINK processing
2310 // ----------------------------------------------------------------------------
2311
2312 bool wxTextCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
2313 {
2314 NMHDR *hdr = (NMHDR* )lParam;
2315 switch ( hdr->code )
2316 {
2317 case EN_MSGFILTER:
2318 {
2319 const MSGFILTER *msgf = (MSGFILTER *)lParam;
2320 UINT msg = msgf->msg;
2321
2322 // this is a bit crazy but richedit 1.0 sends us all mouse
2323 // events _except_ WM_LBUTTONUP (don't ask me why) so we have
2324 // generate the wxWin events for this message manually
2325 //
2326 // NB: in fact, this is still not totally correct as it does
2327 // send us WM_LBUTTONUP if the selection was cleared by the
2328 // last click -- so currently we get 2 events in this case,
2329 // but as I don't see any obvious way to check for this I
2330 // leave this code in place because it's still better than
2331 // not getting left up events at all
2332 if ( msg == WM_LBUTTONUP )
2333 {
2334 WXUINT flags = msgf->wParam;
2335 int x = GET_X_LPARAM(msgf->lParam),
2336 y = GET_Y_LPARAM(msgf->lParam);
2337
2338 HandleMouseEvent(msg, x, y, flags);
2339 }
2340 }
2341
2342 // return true to process the event (and false to ignore it)
2343 return true;
2344
2345 case EN_LINK:
2346 {
2347 const ENLINK *enlink = (ENLINK *)hdr;
2348
2349 switch ( enlink->msg )
2350 {
2351 case WM_SETCURSOR:
2352 // ok, so it is hardcoded - do we really nee to
2353 // customize it?
2354 {
2355 wxCursor cur(wxCURSOR_HAND);
2356 ::SetCursor(GetHcursorOf(cur));
2357 *result = TRUE;
2358 break;
2359 }
2360
2361 case WM_MOUSEMOVE:
2362 case WM_LBUTTONDOWN:
2363 case WM_LBUTTONUP:
2364 case WM_LBUTTONDBLCLK:
2365 case WM_RBUTTONDOWN:
2366 case WM_RBUTTONUP:
2367 case WM_RBUTTONDBLCLK:
2368 // send a mouse event
2369 {
2370 static const wxEventType eventsMouse[] =
2371 {
2372 wxEVT_MOTION,
2373 wxEVT_LEFT_DOWN,
2374 wxEVT_LEFT_UP,
2375 wxEVT_LEFT_DCLICK,
2376 wxEVT_RIGHT_DOWN,
2377 wxEVT_RIGHT_UP,
2378 wxEVT_RIGHT_DCLICK,
2379 };
2380
2381 // the event ids are consecutive
2382 wxMouseEvent
2383 evtMouse(eventsMouse[enlink->msg - WM_MOUSEMOVE]);
2384
2385 InitMouseEvent(evtMouse,
2386 GET_X_LPARAM(enlink->lParam),
2387 GET_Y_LPARAM(enlink->lParam),
2388 enlink->wParam);
2389
2390 wxTextUrlEvent event(m_windowId, evtMouse,
2391 enlink->chrg.cpMin,
2392 enlink->chrg.cpMax);
2393
2394 InitCommandEvent(event);
2395
2396 *result = ProcessCommand(event);
2397 }
2398 break;
2399 }
2400 }
2401 return true;
2402 }
2403
2404 // not processed, leave it to the base class
2405 return wxTextCtrlBase::MSWOnNotify(idCtrl, lParam, result);
2406 }
2407
2408 // ----------------------------------------------------------------------------
2409 // colour setting for the rich edit controls
2410 // ----------------------------------------------------------------------------
2411
2412 bool wxTextCtrl::SetBackgroundColour(const wxColour& colour)
2413 {
2414 if ( !wxTextCtrlBase::SetBackgroundColour(colour) )
2415 {
2416 // colour didn't really change
2417 return false;
2418 }
2419
2420 if ( IsRich() )
2421 {
2422 // rich edit doesn't use WM_CTLCOLOR, hence we need to send
2423 // EM_SETBKGNDCOLOR additionally
2424 ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour));
2425 }
2426
2427 return true;
2428 }
2429
2430 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
2431 {
2432 if ( !wxTextCtrlBase::SetForegroundColour(colour) )
2433 {
2434 // colour didn't really change
2435 return false;
2436 }
2437
2438 if ( IsRich() )
2439 {
2440 // change the colour of everything
2441 CHARFORMAT cf;
2442 wxZeroMemory(cf);
2443 cf.cbSize = sizeof(cf);
2444 cf.dwMask = CFM_COLOR;
2445 cf.crTextColor = wxColourToRGB(colour);
2446 ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf);
2447 }
2448
2449 return true;
2450 }
2451
2452 // ----------------------------------------------------------------------------
2453 // styling support for rich edit controls
2454 // ----------------------------------------------------------------------------
2455
2456 #if wxUSE_RICHEDIT
2457
2458 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
2459 {
2460 if ( !IsRich() )
2461 {
2462 // can't do it with normal text control
2463 return false;
2464 }
2465
2466 // the richedit 1.0 doesn't handle setting background colour, so don't
2467 // even try to do anything if it's the only thing we want to change
2468 if ( m_verRichEdit == 1 && !style.HasFont() && !style.HasTextColour() &&
2469 !style.HasLeftIndent() && !style.HasRightIndent() && !style.HasAlignment() &&
2470 !style.HasTabs() )
2471 {
2472 // nothing to do: return true if there was really nothing to do and
2473 // false if we failed to set bg colour
2474 return !style.HasBackgroundColour();
2475 }
2476
2477 // order the range if needed
2478 if ( start > end )
2479 {
2480 long tmp = start;
2481 start = end;
2482 end = tmp;
2483 }
2484
2485 // we can only change the format of the selection, so select the range we
2486 // want and restore the old selection later
2487 long startOld, endOld;
2488 GetSelection(&startOld, &endOld);
2489
2490 // but do we really have to change the selection?
2491 bool changeSel = start != startOld || end != endOld;
2492
2493 if ( changeSel )
2494 {
2495 DoSetSelection(start, end, false /* don't scroll caret into view */);
2496 }
2497
2498 // initialize CHARFORMAT struct
2499 #if wxUSE_RICHEDIT2
2500 CHARFORMAT2 cf;
2501 #else
2502 CHARFORMAT cf;
2503 #endif
2504
2505 wxZeroMemory(cf);
2506
2507 // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2508 // CHARFORMAT in that case
2509 #if wxUSE_RICHEDIT2
2510 if ( m_verRichEdit == 1 )
2511 {
2512 // this is the only thing the control is going to grok
2513 cf.cbSize = sizeof(CHARFORMAT);
2514 }
2515 else
2516 #endif
2517 {
2518 // CHARFORMAT or CHARFORMAT2
2519 cf.cbSize = sizeof(cf);
2520 }
2521
2522 if ( style.HasFont() )
2523 {
2524 // VZ: CFM_CHARSET doesn't seem to do anything at all in RichEdit 2.0
2525 // but using it doesn't seem to hurt neither so leaving it for now
2526
2527 cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET |
2528 CFM_ITALIC | CFM_BOLD | CFM_UNDERLINE;
2529
2530 // fill in data from LOGFONT but recalculate lfHeight because we need
2531 // the real height in twips and not the negative number which
2532 // wxFillLogFont() returns (this is correct in general and works with
2533 // the Windows font mapper, but not here)
2534 LOGFONT lf;
2535 wxFillLogFont(&lf, &style.GetFont());
2536 cf.yHeight = 20*style.GetFont().GetPointSize(); // 1 pt = 20 twips
2537 cf.bCharSet = lf.lfCharSet;
2538 cf.bPitchAndFamily = lf.lfPitchAndFamily;
2539 wxStrncpy( cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName) );
2540
2541 // also deal with underline/italic/bold attributes: note that we must
2542 // always set CFM_ITALIC &c bits in dwMask, even if we don't set the
2543 // style to allow clearing it
2544 if ( lf.lfItalic )
2545 {
2546 cf.dwEffects |= CFE_ITALIC;
2547 }
2548
2549 if ( lf.lfWeight == FW_BOLD )
2550 {
2551 cf.dwEffects |= CFE_BOLD;
2552 }
2553
2554 if ( lf.lfUnderline )
2555 {
2556 cf.dwEffects |= CFE_UNDERLINE;
2557 }
2558
2559 // strikeout fonts are not supported by wxWidgets
2560 }
2561
2562 if ( style.HasTextColour() )
2563 {
2564 cf.dwMask |= CFM_COLOR;
2565 cf.crTextColor = wxColourToRGB(style.GetTextColour());
2566 }
2567
2568 #if wxUSE_RICHEDIT2
2569 if ( m_verRichEdit != 1 && style.HasBackgroundColour() )
2570 {
2571 cf.dwMask |= CFM_BACKCOLOR;
2572 cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
2573 }
2574 #endif // wxUSE_RICHEDIT2
2575
2576 // do format the selection
2577 bool ok = ::SendMessage(GetHwnd(), EM_SETCHARFORMAT,
2578 SCF_SELECTION, (LPARAM)&cf) != 0;
2579 if ( !ok )
2580 {
2581 wxLogDebug(_T("SendMessage(EM_SETCHARFORMAT, SCF_SELECTION) failed"));
2582 }
2583
2584 // now do the paragraph formatting
2585 PARAFORMAT2 pf;
2586 wxZeroMemory(pf);
2587 // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2588 // PARAFORMAT in that case
2589 #if wxUSE_RICHEDIT2
2590 if ( m_verRichEdit == 1 )
2591 {
2592 // this is the only thing the control is going to grok
2593 pf.cbSize = sizeof(PARAFORMAT);
2594 }
2595 else
2596 #endif
2597 {
2598 // PARAFORMAT or PARAFORMAT2
2599 pf.cbSize = sizeof(pf);
2600 }
2601
2602 if (style.HasAlignment())
2603 {
2604 pf.dwMask |= PFM_ALIGNMENT;
2605 if (style.GetAlignment() == wxTEXT_ALIGNMENT_RIGHT)
2606 pf.wAlignment = PFA_RIGHT;
2607 else if (style.GetAlignment() == wxTEXT_ALIGNMENT_CENTRE)
2608 pf.wAlignment = PFA_CENTER;
2609 else if (style.GetAlignment() == wxTEXT_ALIGNMENT_JUSTIFIED)
2610 pf.wAlignment = PFA_JUSTIFY;
2611 else
2612 pf.wAlignment = PFA_LEFT;
2613 }
2614
2615 if (style.HasLeftIndent())
2616 {
2617 pf.dwMask |= PFM_STARTINDENT | PFM_OFFSET;
2618
2619 // Convert from 1/10 mm to TWIPS
2620 pf.dxStartIndent = (int) (((double) style.GetLeftIndent()) * mm2twips / 10.0) ;
2621 pf.dxOffset = (int) (((double) style.GetLeftSubIndent()) * mm2twips / 10.0) ;
2622 }
2623
2624 if (style.HasRightIndent())
2625 {
2626 pf.dwMask |= PFM_RIGHTINDENT;
2627
2628 // Convert from 1/10 mm to TWIPS
2629 pf.dxRightIndent = (int) (((double) style.GetRightIndent()) * mm2twips / 10.0) ;
2630 }
2631
2632 if (style.HasTabs())
2633 {
2634 pf.dwMask |= PFM_TABSTOPS;
2635
2636 const wxArrayInt& tabs = style.GetTabs();
2637
2638 pf.cTabCount = (SHORT)wxMin(tabs.GetCount(), MAX_TAB_STOPS);
2639 size_t i;
2640 for (i = 0; i < (size_t) pf.cTabCount; i++)
2641 {
2642 // Convert from 1/10 mm to TWIPS
2643 pf.rgxTabs[i] = (int) (((double) tabs[i]) * mm2twips / 10.0) ;
2644 }
2645 }
2646
2647 #if wxUSE_RICHEDIT2
2648 if ( m_verRichEdit > 1 )
2649 {
2650 if ( wxTheApp->GetLayoutDirection() == wxLayout_RightToLeft )
2651 {
2652 // Use RTL paragraphs in RTL mode to get proper layout
2653 pf.dwMask |= PFM_RTLPARA;
2654 pf.wEffects |= PFE_RTLPARA;
2655 }
2656 }
2657 #endif // wxUSE_RICHEDIT2
2658
2659 if ( pf.dwMask )
2660 {
2661 // do format the selection
2662 bool ok = ::SendMessage(GetHwnd(), EM_SETPARAFORMAT,
2663 0, (LPARAM) &pf) != 0;
2664 if ( !ok )
2665 {
2666 wxLogDebug(_T("SendMessage(EM_SETPARAFORMAT, 0) failed"));
2667 }
2668 }
2669
2670 if ( changeSel )
2671 {
2672 // restore the original selection
2673 DoSetSelection(startOld, endOld, false);
2674 }
2675
2676 return ok;
2677 }
2678
2679 bool wxTextCtrl::SetDefaultStyle(const wxTextAttr& style)
2680 {
2681 if ( !wxTextCtrlBase::SetDefaultStyle(style) )
2682 return false;
2683
2684 if ( IsEditable() )
2685 {
2686 // we have to do this or the style wouldn't apply for the text typed by
2687 // the user
2688 wxTextPos posLast = GetLastPosition();
2689 SetStyle(posLast, posLast, m_defaultStyle);
2690 }
2691
2692 return true;
2693 }
2694
2695 bool wxTextCtrl::GetStyle(long position, wxTextAttr& style)
2696 {
2697 if ( !IsRich() )
2698 {
2699 // can't do it with normal text control
2700 return false;
2701 }
2702
2703 // initialize CHARFORMAT struct
2704 #if wxUSE_RICHEDIT2
2705 CHARFORMAT2 cf;
2706 #else
2707 CHARFORMAT cf;
2708 #endif
2709
2710 wxZeroMemory(cf);
2711
2712 // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2713 // CHARFORMAT in that case
2714 #if wxUSE_RICHEDIT2
2715 if ( m_verRichEdit == 1 )
2716 {
2717 // this is the only thing the control is going to grok
2718 cf.cbSize = sizeof(CHARFORMAT);
2719 }
2720 else
2721 #endif
2722 {
2723 // CHARFORMAT or CHARFORMAT2
2724 cf.cbSize = sizeof(cf);
2725 }
2726 // we can only change the format of the selection, so select the range we
2727 // want and restore the old selection later
2728 long startOld, endOld;
2729 GetSelection(&startOld, &endOld);
2730
2731 // but do we really have to change the selection?
2732 bool changeSel = position != startOld || position != endOld;
2733
2734 if ( changeSel )
2735 {
2736 DoSetSelection(position, position+1, false /* don't scroll caret into view */);
2737 }
2738
2739 // get the selection formatting
2740 (void) ::SendMessage(GetHwnd(), EM_GETCHARFORMAT,
2741 SCF_SELECTION, (LPARAM)&cf) ;
2742
2743
2744 LOGFONT lf;
2745 lf.lfHeight = cf.yHeight;
2746 lf.lfWidth = 0;
2747 lf.lfCharSet = ANSI_CHARSET; // FIXME: how to get correct charset?
2748 lf.lfClipPrecision = 0;
2749 lf.lfEscapement = 0;
2750 wxStrcpy(lf.lfFaceName, cf.szFaceName);
2751
2752 //NOTE: we _MUST_ set each of these values to _something_ since we
2753 //do not call wxZeroMemory on the LOGFONT lf
2754 if (cf.dwEffects & CFE_ITALIC)
2755 lf.lfItalic = TRUE;
2756 else
2757 lf.lfItalic = FALSE;
2758
2759 lf.lfOrientation = 0;
2760 lf.lfPitchAndFamily = cf.bPitchAndFamily;
2761 lf.lfQuality = 0;
2762
2763 if (cf.dwEffects & CFE_STRIKEOUT)
2764 lf.lfStrikeOut = TRUE;
2765 else
2766 lf.lfStrikeOut = FALSE;
2767
2768 if (cf.dwEffects & CFE_UNDERLINE)
2769 lf.lfUnderline = TRUE;
2770 else
2771 lf.lfUnderline = FALSE;
2772
2773 if (cf.dwEffects & CFE_BOLD)
2774 lf.lfWeight = FW_BOLD;
2775 else
2776 lf.lfWeight = FW_NORMAL;
2777
2778 wxFont font = wxCreateFontFromLogFont(& lf);
2779 if (font.Ok())
2780 {
2781 style.SetFont(font);
2782 }
2783 style.SetTextColour(wxColour(cf.crTextColor));
2784
2785 #if wxUSE_RICHEDIT2
2786 if ( m_verRichEdit != 1 )
2787 {
2788 // cf.dwMask |= CFM_BACKCOLOR;
2789 style.SetBackgroundColour(wxColour(cf.crBackColor));
2790 }
2791 #endif // wxUSE_RICHEDIT2
2792
2793 // now get the paragraph formatting
2794 PARAFORMAT2 pf;
2795 wxZeroMemory(pf);
2796 // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2797 // PARAFORMAT in that case
2798 #if wxUSE_RICHEDIT2
2799 if ( m_verRichEdit == 1 )
2800 {
2801 // this is the only thing the control is going to grok
2802 pf.cbSize = sizeof(PARAFORMAT);
2803 }
2804 else
2805 #endif
2806 {
2807 // PARAFORMAT or PARAFORMAT2
2808 pf.cbSize = sizeof(pf);
2809 }
2810
2811 // do format the selection
2812 (void) ::SendMessage(GetHwnd(), EM_GETPARAFORMAT, 0, (LPARAM) &pf) ;
2813
2814 style.SetLeftIndent( (int) ((double) pf.dxStartIndent * twips2mm * 10.0), (int) ((double) pf.dxOffset * twips2mm * 10.0) );
2815 style.SetRightIndent( (int) ((double) pf.dxRightIndent * twips2mm * 10.0) );
2816
2817 if (pf.wAlignment == PFA_CENTER)
2818 style.SetAlignment(wxTEXT_ALIGNMENT_CENTRE);
2819 else if (pf.wAlignment == PFA_RIGHT)
2820 style.SetAlignment(wxTEXT_ALIGNMENT_RIGHT);
2821 else if (pf.wAlignment == PFA_JUSTIFY)
2822 style.SetAlignment(wxTEXT_ALIGNMENT_JUSTIFIED);
2823 else
2824 style.SetAlignment(wxTEXT_ALIGNMENT_LEFT);
2825
2826 wxArrayInt tabStops;
2827 size_t i;
2828 for (i = 0; i < (size_t) pf.cTabCount; i++)
2829 {
2830 tabStops.Add( (int) ((double) (pf.rgxTabs[i] & 0xFFFF) * twips2mm * 10.0) );
2831 }
2832
2833 if ( changeSel )
2834 {
2835 // restore the original selection
2836 DoSetSelection(startOld, endOld, false);
2837 }
2838
2839 return true;
2840 }
2841
2842 #endif
2843
2844 // ----------------------------------------------------------------------------
2845 // wxRichEditModule
2846 // ----------------------------------------------------------------------------
2847
2848 static const HINSTANCE INVALID_HINSTANCE = (HINSTANCE)-1;
2849
2850 bool wxRichEditModule::OnInit()
2851 {
2852 // don't do anything - we will load it when needed
2853 return true;
2854 }
2855
2856 void wxRichEditModule::OnExit()
2857 {
2858 for ( size_t i = 0; i < WXSIZEOF(ms_hRichEdit); i++ )
2859 {
2860 if ( ms_hRichEdit[i] && ms_hRichEdit[i] != INVALID_HINSTANCE )
2861 {
2862 ::FreeLibrary(ms_hRichEdit[i]);
2863 ms_hRichEdit[i] = NULL;
2864 }
2865 }
2866 #if wxUSE_INKEDIT
2867 if (ms_inkEditLib.IsLoaded())
2868 ms_inkEditLib.Unload();
2869 #endif
2870 }
2871
2872 /* static */
2873 bool wxRichEditModule::Load(Version version)
2874 {
2875 if ( ms_hRichEdit[version] == INVALID_HINSTANCE )
2876 {
2877 // we had already tried to load it and failed
2878 return false;
2879 }
2880
2881 if ( ms_hRichEdit[version] )
2882 {
2883 // we've already got this one
2884 return true;
2885 }
2886
2887 static const wxChar *dllnames[] =
2888 {
2889 _T("riched32"),
2890 _T("riched20"),
2891 _T("msftedit"),
2892 };
2893
2894 wxCOMPILE_TIME_ASSERT( WXSIZEOF(dllnames) == Version_Max,
2895 RichEditDllNamesVersionsMismatch );
2896
2897 ms_hRichEdit[version] = ::LoadLibrary(dllnames[version]);
2898
2899 if ( !ms_hRichEdit[version] )
2900 {
2901 ms_hRichEdit[version] = INVALID_HINSTANCE;
2902
2903 return false;
2904 }
2905
2906 return true;
2907 }
2908
2909 #if wxUSE_INKEDIT
2910 // load the InkEdit library
2911 bool wxRichEditModule::LoadInkEdit()
2912 {
2913 static wxDynamicLibrary ms_inkEditLib;
2914 static bool ms_inkEditLibLoadAttemped;
2915 if (ms_inkEditLibLoadAttemped)
2916 ms_inkEditLib.IsLoaded();
2917
2918 ms_inkEditLibLoadAttemped = true;
2919
2920 wxLogNull logNull;
2921 return ms_inkEditLib.Load(wxT("inked"));
2922 }
2923 #endif
2924
2925
2926 #endif // wxUSE_RICHEDIT
2927
2928 #endif // wxUSE_TEXTCTRL && !(__SMARTPHONE__ && __WXWINCE__)
wxWidgets (Impactor)