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