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fix mingw32 4.3 warning about passing literal string as non-const char*
[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 = wx_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 DECLARE_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 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 #if wxUSE_WCHAR_T
994 wxWCharBuffer wchBuf(len);
995 wchar_t *wpc = wchBuf.data();
996 #else
997 wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
998 wchar_t *wpc = wchBuf;
999 #endif
1000
1001 conv.MB2WC(wpc, value.mb_str(), value.length());
1002 #endif // wxUSE_UNICODE_MSLU
1003
1004 // finally, stream it in the control
1005 EDITSTREAM eds;
1006 wxZeroMemory(eds);
1007 eds.dwCookie = (DWORD)&wpc;
1008 // the cast below is needed for broken (very) old mingw32 headers
1009 eds.pfnCallback = (EDITSTREAMCALLBACK)wxRichEditStreamIn;
1010
1011 // same problem as in DoWriteText(): we can get multiple events here
1012 UpdatesCountFilter ucf(m_updatesCount);
1013
1014 ::SendMessage(GetHwnd(), EM_STREAMIN,
1015 SF_TEXT |
1016 SF_UNICODE |
1017 (selectionOnly ? SFF_SELECTION : 0),
1018 (LPARAM)&eds);
1019
1020 // It's okay for EN_UPDATE to not be sent if the selection is empty and
1021 // the text is empty, otherwise warn the programmer about it.
1022 wxASSERT_MSG( ucf.GotUpdate() || ( !HasSelection() && value.empty() ),
1023 _T("EM_STREAMIN didn't send EN_UPDATE?") );
1024
1025 if ( eds.dwError )
1026 {
1027 wxLogLastError(_T("EM_STREAMIN"));
1028 }
1029
1030 #if !wxUSE_WCHAR_T
1031 free(wchBuf);
1032 #endif // !wxUSE_WCHAR_T
1033
1034 return true;
1035 }
1036
1037 #if !wxUSE_UNICODE_MSLU
1038
1039 wxString
1040 wxTextCtrl::StreamOut(wxFontEncoding encoding, bool selectionOnly) const
1041 {
1042 wxString out;
1043
1044 const int len = GetWindowTextLength(GetHwnd());
1045
1046 #if wxUSE_WCHAR_T
1047 wxWCharBuffer wchBuf(len);
1048 wchar_t *wpc = wchBuf.data();
1049 #else
1050 wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
1051 wchar_t *wpc = wchBuf;
1052 #endif
1053
1054 wxStreamOutData data;
1055 data.wpc = wpc;
1056 data.len = len;
1057
1058 EDITSTREAM eds;
1059 wxZeroMemory(eds);
1060 eds.dwCookie = (DWORD)&data;
1061 eds.pfnCallback = wxRichEditStreamOut;
1062
1063 ::SendMessage
1064 (
1065 GetHwnd(),
1066 EM_STREAMOUT,
1067 SF_TEXT | SF_UNICODE | (selectionOnly ? SFF_SELECTION : 0),
1068 (LPARAM)&eds
1069 );
1070
1071 if ( eds.dwError )
1072 {
1073 wxLogLastError(_T("EM_STREAMOUT"));
1074 }
1075 else // streamed out ok
1076 {
1077 // NUL-terminate the string because its length could have been
1078 // decreased by wxRichEditStreamOut
1079 *(wchBuf.data() + data.len) = L'\0';
1080
1081 // now convert to the given encoding (this is a possibly lossful
1082 // conversion but what else can we do)
1083 wxCSConv conv(encoding);
1084 size_t lenNeeded = conv.WC2MB(NULL, wchBuf, 0);
1085
1086 if ( lenNeeded != wxCONV_FAILED && lenNeeded++ )
1087 {
1088 conv.WC2MB(wxStringBuffer(out, lenNeeded), wchBuf, lenNeeded);
1089 }
1090 }
1091
1092 #if !wxUSE_WCHAR_T
1093 free(wchBuf);
1094 #endif // !wxUSE_WCHAR_T
1095
1096 return out;
1097 }
1098
1099 #endif // !wxUSE_UNICODE_MSLU
1100
1101 #endif // wxUSE_RICHEDIT
1102
1103 void wxTextCtrl::WriteText(const wxString& value)
1104 {
1105 DoWriteText(value);
1106 }
1107
1108 void wxTextCtrl::DoWriteText(const wxString& value, int flags)
1109 {
1110 bool selectionOnly = (flags & SetValue_SelectionOnly) != 0;
1111 wxString valueDos;
1112 if ( m_windowStyle & wxTE_MULTILINE )
1113 valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
1114 else
1115 valueDos = value;
1116
1117 #if wxUSE_RICHEDIT
1118 // there are several complications with the rich edit controls here
1119 bool done = false;
1120 if ( IsRich() )
1121 {
1122 // first, ensure that the new text will be in the default style
1123 if ( !m_defaultStyle.IsDefault() )
1124 {
1125 long start, end;
1126 GetSelection(&start, &end);
1127 SetStyle(start, end, m_defaultStyle);
1128 }
1129
1130 #if wxUSE_UNICODE_MSLU
1131 // RichEdit doesn't have Unicode version of EM_REPLACESEL on Win9x,
1132 // but EM_STREAMIN works
1133 if ( wxUsingUnicowsDll() && GetRichVersion() > 1 )
1134 {
1135 done = StreamIn(valueDos, wxFONTENCODING_SYSTEM, selectionOnly);
1136 }
1137 #endif // wxUSE_UNICODE_MSLU
1138
1139 #if !wxUSE_UNICODE
1140 // next check if the text we're inserting must be shown in a non
1141 // default charset -- this only works for RichEdit > 1.0
1142 if ( GetRichVersion() > 1 )
1143 {
1144 wxFont font = m_defaultStyle.GetFont();
1145 if ( !font.Ok() )
1146 font = GetFont();
1147
1148 if ( font.Ok() )
1149 {
1150 wxFontEncoding encoding = font.GetEncoding();
1151 if ( encoding != wxFONTENCODING_SYSTEM )
1152 {
1153 // we have to use EM_STREAMIN to force richedit control 2.0+
1154 // to show any text in the non default charset -- otherwise
1155 // it thinks it knows better than we do and always shows it
1156 // in the default one
1157 done = StreamIn(valueDos, encoding, selectionOnly);
1158 }
1159 }
1160 }
1161 #endif // !wxUSE_UNICODE
1162 }
1163
1164 if ( !done )
1165 #endif // wxUSE_RICHEDIT
1166 {
1167 // in some cases we get 2 EN_CHANGE notifications after the SendMessage
1168 // call (this happens for plain EDITs with EM_REPLACESEL and under some
1169 // -- undetermined -- conditions with rich edit) and sometimes we don't
1170 // get any events at all (plain EDIT with WM_SETTEXT), so ensure that
1171 // we generate exactly one of them by ignoring all but the first one in
1172 // SendUpdateEvent() and generating one ourselves if we hadn't got any
1173 // notifications from Windows
1174 if ( !(flags & SetValue_SendEvent) )
1175 m_updatesCount = -2; // suppress any update event
1176
1177 UpdatesCountFilter ucf(m_updatesCount);
1178
1179 ::SendMessage(GetHwnd(), selectionOnly ? EM_REPLACESEL : WM_SETTEXT,
1180 // EM_REPLACESEL takes 1 to indicate the operation should be redoable
1181 selectionOnly ? 1 : 0, (LPARAM)valueDos.wx_str());
1182
1183 if ( !ucf.GotUpdate() && (flags & SetValue_SendEvent) )
1184 {
1185 SendUpdateEvent();
1186 }
1187 }
1188 }
1189
1190 void wxTextCtrl::AppendText(const wxString& text)
1191 {
1192 wxTextEntry::AppendText(text);
1193
1194 #if wxUSE_RICHEDIT
1195 // don't do this if we're frozen, saves some time
1196 if ( !IsFrozen() && IsMultiLine() && GetRichVersion() > 1 )
1197 {
1198 // setting the caret to the end and showing it simply doesn't work for
1199 // RichEdit 2.0 -- force it to still do what we want
1200 ::SendMessage(GetHwnd(), EM_LINESCROLL, 0, GetNumberOfLines());
1201 }
1202 #endif // wxUSE_RICHEDIT
1203 }
1204
1205 void wxTextCtrl::Clear()
1206 {
1207 ::SetWindowText(GetHwnd(), wxEmptyString);
1208
1209 if ( IsMultiLine() && !IsRich() )
1210 {
1211 // rich edit controls send EN_UPDATE from WM_SETTEXT handler themselves
1212 // but the normal ones don't -- make Clear() behaviour consistent by
1213 // always sending this event
1214 SendUpdateEvent();
1215 }
1216 }
1217
1218 #ifdef __WIN32__
1219
1220 bool wxTextCtrl::EmulateKeyPress(const wxKeyEvent& event)
1221 {
1222 SetFocus();
1223
1224 size_t lenOld = GetValue().length();
1225
1226 wxUint32 code = event.GetRawKeyCode();
1227 ::keybd_event((BYTE)code, 0, 0 /* key press */, 0);
1228 ::keybd_event((BYTE)code, 0, KEYEVENTF_KEYUP, 0);
1229
1230 // assume that any alphanumeric key changes the total number of characters
1231 // in the control - this should work in 99% of cases
1232 return GetValue().length() != lenOld;
1233 }
1234
1235 #endif // __WIN32__
1236
1237 // ----------------------------------------------------------------------------
1238 // Accessors
1239 // ----------------------------------------------------------------------------
1240
1241 void wxTextCtrl::SetInsertionPointEnd()
1242 {
1243 // we must not do anything if the caret is already there because calling
1244 // SetInsertionPoint() thaws the controls if Freeze() had been called even
1245 // if it doesn't actually move the caret anywhere and so the simple fact of
1246 // doing it results in horrible flicker when appending big amounts of text
1247 // to the control in a few chunks (see DoAddText() test in the text sample)
1248 const wxTextPos lastPosition = GetLastPosition();
1249 if ( GetInsertionPoint() == lastPosition )
1250 {
1251 return;
1252 }
1253
1254 SetInsertionPoint(lastPosition);
1255 }
1256
1257 long wxTextCtrl::GetInsertionPoint() const
1258 {
1259 #if wxUSE_RICHEDIT
1260 if ( IsRich() )
1261 {
1262 CHARRANGE range;
1263 range.cpMin = 0;
1264 range.cpMax = 0;
1265 ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
1266 return range.cpMin;
1267 }
1268 #endif // wxUSE_RICHEDIT
1269
1270 return wxTextEntry::GetInsertionPoint();
1271 }
1272
1273 wxTextPos wxTextCtrl::GetLastPosition() const
1274 {
1275 if ( IsMultiLine() )
1276 {
1277 int numLines = GetNumberOfLines();
1278 long posStartLastLine = XYToPosition(0, numLines - 1);
1279
1280 long lenLastLine = GetLengthOfLineContainingPos(posStartLastLine);
1281
1282 return posStartLastLine + lenLastLine;
1283 }
1284
1285 return wxTextEntry::GetLastPosition();
1286 }
1287
1288 // If the return values from and to are the same, there is no
1289 // selection.
1290 void wxTextCtrl::GetSelection(long *from, long *to) const
1291 {
1292 #if wxUSE_RICHEDIT
1293 if ( IsRich() )
1294 {
1295 CHARRANGE charRange;
1296 ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &charRange);
1297
1298 *from = charRange.cpMin;
1299 *to = charRange.cpMax;
1300 }
1301 else
1302 #endif // !wxUSE_RICHEDIT
1303 {
1304 wxTextEntry::GetSelection(from, to);
1305 }
1306 }
1307
1308 // ----------------------------------------------------------------------------
1309 // selection
1310 // ----------------------------------------------------------------------------
1311
1312 void wxTextCtrl::DoSetSelection(long from, long to, int flags)
1313 {
1314 HWND hWnd = GetHwnd();
1315
1316 #if wxUSE_RICHEDIT
1317 if ( IsRich() )
1318 {
1319 // if from and to are both -1, it means (in wxWidgets) that all text
1320 // should be selected, translate this into Windows convention
1321 if ( (from == -1) && (to == -1) )
1322 {
1323 from = 0;
1324 }
1325
1326 CHARRANGE range;
1327 range.cpMin = from;
1328 range.cpMax = to;
1329 ::SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM)&range);
1330 }
1331 else
1332 #endif // wxUSE_RICHEDIT
1333 {
1334 wxTextEntry::DoSetSelection(from, to, flags);
1335 }
1336
1337 if ( (flags & SetSel_Scroll) && !IsFrozen() )
1338 {
1339 #if wxUSE_RICHEDIT
1340 // richedit 3.0 (i.e. the version living in riched20.dll distributed
1341 // with Windows 2000 and beyond) doesn't honour EM_SCROLLCARET when
1342 // emulating richedit 2.0 unless the control has focus or ECO_NOHIDESEL
1343 // option is set (but it does work ok in richedit 1.0 mode...)
1344 //
1345 // so to make it work we either need to give focus to it here which
1346 // will probably create many problems (dummy focus events; window
1347 // containing the text control being brought to foreground
1348 // unexpectedly; ...) or to temporarily set ECO_NOHIDESEL which may
1349 // create other problems too -- and in fact it does because if we turn
1350 // on/off this style while appending the text to the control, the
1351 // vertical scrollbar never appears in it even if we append tons of
1352 // text and to work around this the only solution I found was to use
1353 // ES_DISABLENOSCROLL
1354 //
1355 // this is very ugly but I don't see any other way to make this work
1356 long style = 0;
1357 if ( GetRichVersion() > 1 )
1358 {
1359 if ( !HasFlag(wxTE_NOHIDESEL) )
1360 {
1361 // setting ECO_NOHIDESEL also sets WS_VISIBLE and possibly
1362 // others, remember the style so we can reset it later if needed
1363 style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1364 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1365 ECOOP_OR, ECO_NOHIDESEL);
1366 }
1367 //else: everything is already ok
1368 }
1369 #endif // wxUSE_RICHEDIT
1370
1371 ::SendMessage(hWnd, EM_SCROLLCARET, 0, (LPARAM)0);
1372
1373 #if wxUSE_RICHEDIT
1374 // restore ECO_NOHIDESEL if we changed it
1375 if ( GetRichVersion() > 1 && !HasFlag(wxTE_NOHIDESEL) )
1376 {
1377 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1378 ECOOP_AND, ~ECO_NOHIDESEL);
1379 if ( style != ::GetWindowLong(GetHwnd(), GWL_STYLE) )
1380 ::SetWindowLong(GetHwnd(), GWL_STYLE, style);
1381 }
1382 #endif // wxUSE_RICHEDIT
1383 }
1384 }
1385
1386 // ----------------------------------------------------------------------------
1387 // Working with files
1388 // ----------------------------------------------------------------------------
1389
1390 bool wxTextCtrl::DoLoadFile(const wxString& file, int fileType)
1391 {
1392 if ( wxTextCtrlBase::DoLoadFile(file, fileType) )
1393 {
1394 // update the size limit if needed
1395 AdjustSpaceLimit();
1396
1397 return true;
1398 }
1399
1400 return false;
1401 }
1402
1403 // ----------------------------------------------------------------------------
1404 // dirty status
1405 // ----------------------------------------------------------------------------
1406
1407 bool wxTextCtrl::IsModified() const
1408 {
1409 return ::SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0;
1410 }
1411
1412 void wxTextCtrl::MarkDirty()
1413 {
1414 ::SendMessage(GetHwnd(), EM_SETMODIFY, TRUE, 0);
1415 }
1416
1417 void wxTextCtrl::DiscardEdits()
1418 {
1419 ::SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0);
1420 }
1421
1422 // ----------------------------------------------------------------------------
1423 // Positions <-> coords
1424 // ----------------------------------------------------------------------------
1425
1426 int wxTextCtrl::GetNumberOfLines() const
1427 {
1428 return (int)::SendMessage(GetHwnd(), EM_GETLINECOUNT, 0, 0);
1429 }
1430
1431 long wxTextCtrl::XYToPosition(long x, long y) const
1432 {
1433 // This gets the char index for the _beginning_ of this line
1434 long charIndex = ::SendMessage(GetHwnd(), EM_LINEINDEX, y, 0);
1435
1436 return charIndex + x;
1437 }
1438
1439 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
1440 {
1441 HWND hWnd = GetHwnd();
1442
1443 // This gets the line number containing the character
1444 long lineNo;
1445 #if wxUSE_RICHEDIT
1446 if ( IsRich() )
1447 {
1448 lineNo = ::SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, pos);
1449 }
1450 else
1451 #endif // wxUSE_RICHEDIT
1452 {
1453 lineNo = ::SendMessage(hWnd, EM_LINEFROMCHAR, pos, 0);
1454 }
1455
1456 if ( lineNo == -1 )
1457 {
1458 // no such line
1459 return false;
1460 }
1461
1462 // This gets the char index for the _beginning_ of this line
1463 long charIndex = ::SendMessage(hWnd, EM_LINEINDEX, lineNo, 0);
1464 if ( charIndex == -1 )
1465 {
1466 return false;
1467 }
1468
1469 // The X position must therefore be the different between pos and charIndex
1470 if ( x )
1471 *x = pos - charIndex;
1472 if ( y )
1473 *y = lineNo;
1474
1475 return true;
1476 }
1477
1478 wxTextCtrlHitTestResult
1479 wxTextCtrl::HitTest(const wxPoint& pt, long *posOut) const
1480 {
1481 // first get the position from Windows
1482 LPARAM lParam;
1483
1484 #if wxUSE_RICHEDIT
1485 POINTL ptl;
1486 if ( IsRich() )
1487 {
1488 // for rich edit controls the position is passed iva the struct fields
1489 ptl.x = pt.x;
1490 ptl.y = pt.y;
1491 lParam = (LPARAM)&ptl;
1492 }
1493 else
1494 #endif // wxUSE_RICHEDIT
1495 {
1496 // for the plain ones, we are limited to 16 bit positions which are
1497 // combined in a single 32 bit value
1498 lParam = MAKELPARAM(pt.x, pt.y);
1499 }
1500
1501 LRESULT pos = ::SendMessage(GetHwnd(), EM_CHARFROMPOS, 0, lParam);
1502
1503 if ( pos == -1 )
1504 {
1505 // this seems to indicate an error...
1506 return wxTE_HT_UNKNOWN;
1507 }
1508
1509 #if wxUSE_RICHEDIT
1510 if ( !IsRich() )
1511 #endif // wxUSE_RICHEDIT
1512 {
1513 // for plain EDIT controls the higher word contains something else
1514 pos = LOWORD(pos);
1515 }
1516
1517
1518 // next determine where it is relatively to our point: EM_CHARFROMPOS
1519 // always returns the closest character but we need to be more precise, so
1520 // double check that we really are where it pretends
1521 POINTL ptReal;
1522
1523 #if wxUSE_RICHEDIT
1524 // FIXME: we need to distinguish between richedit 2 and 3 here somehow but
1525 // we don't know how to do it
1526 if ( IsRich() )
1527 {
1528 ::SendMessage(GetHwnd(), EM_POSFROMCHAR, (WPARAM)&ptReal, pos);
1529 }
1530 else
1531 #endif // wxUSE_RICHEDIT
1532 {
1533 LRESULT lRc = ::SendMessage(GetHwnd(), EM_POSFROMCHAR, pos, 0);
1534
1535 if ( lRc == -1 )
1536 {
1537 // this is apparently returned when pos corresponds to the last
1538 // position
1539 ptReal.x =
1540 ptReal.y = 0;
1541 }
1542 else
1543 {
1544 ptReal.x = LOWORD(lRc);
1545 ptReal.y = HIWORD(lRc);
1546 }
1547 }
1548
1549 wxTextCtrlHitTestResult rc;
1550
1551 if ( pt.y > ptReal.y + GetCharHeight() )
1552 rc = wxTE_HT_BELOW;
1553 else if ( pt.x > ptReal.x + GetCharWidth() )
1554 rc = wxTE_HT_BEYOND;
1555 else
1556 rc = wxTE_HT_ON_TEXT;
1557
1558 if ( posOut )
1559 *posOut = pos;
1560
1561 return rc;
1562 }
1563
1564 // ----------------------------------------------------------------------------
1565 //
1566 // ----------------------------------------------------------------------------
1567
1568 void wxTextCtrl::ShowPosition(long pos)
1569 {
1570 HWND hWnd = GetHwnd();
1571
1572 // To scroll to a position, we pass the number of lines and characters
1573 // to scroll *by*. This means that we need to:
1574 // (1) Find the line position of the current line.
1575 // (2) Find the line position of pos.
1576 // (3) Scroll by (pos - current).
1577 // For now, ignore the horizontal scrolling.
1578
1579 // Is this where scrolling is relative to - the line containing the caret?
1580 // Or is the first visible line??? Try first visible line.
1581 // int currentLineLineNo1 = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, -1, 0L);
1582
1583 int currentLineLineNo = (int)::SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, 0, 0);
1584
1585 int specifiedLineLineNo = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, pos, 0);
1586
1587 int linesToScroll = specifiedLineLineNo - currentLineLineNo;
1588
1589 if (linesToScroll != 0)
1590 ::SendMessage(hWnd, EM_LINESCROLL, 0, linesToScroll);
1591 }
1592
1593 long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const
1594 {
1595 return ::SendMessage(GetHwnd(), EM_LINELENGTH, pos, 0);
1596 }
1597
1598 int wxTextCtrl::GetLineLength(long lineNo) const
1599 {
1600 long pos = XYToPosition(0, lineNo);
1601
1602 return GetLengthOfLineContainingPos(pos);
1603 }
1604
1605 wxString wxTextCtrl::GetLineText(long lineNo) const
1606 {
1607 size_t len = (size_t)GetLineLength(lineNo) + 1;
1608
1609 // there must be at least enough place for the length WORD in the
1610 // buffer
1611 len += sizeof(WORD);
1612
1613 wxString str;
1614 {
1615 wxStringBufferLength tmp(str, len);
1616 wxChar *buf = tmp;
1617
1618 *(WORD *)buf = (WORD)len;
1619 len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf);
1620
1621 #if wxUSE_RICHEDIT
1622 if ( IsRich() )
1623 {
1624 // remove the '\r' returned by the rich edit control, the user code
1625 // should never see it
1626 if ( buf[len - 2] == _T('\r') && buf[len - 1] == _T('\n') )
1627 {
1628 // richedit 1.0 uses "\r\n" as line terminator, so remove "\r"
1629 // here and "\n" below
1630 buf[len - 2] = _T('\n');
1631 len--;
1632 }
1633 else if ( buf[len - 1] == _T('\r') )
1634 {
1635 // richedit 2.0+ uses only "\r", replace it with "\n"
1636 buf[len - 1] = _T('\n');
1637 }
1638 }
1639 #endif // wxUSE_RICHEDIT
1640
1641 // remove the '\n' at the end, if any (this is how this function is
1642 // supposed to work according to the docs)
1643 if ( buf[len - 1] == _T('\n') )
1644 {
1645 len--;
1646 }
1647
1648 buf[len] = 0;
1649 tmp.SetLength(len);
1650 }
1651
1652 return str;
1653 }
1654
1655 void wxTextCtrl::SetMaxLength(unsigned long len)
1656 {
1657 #if wxUSE_RICHEDIT
1658 if ( IsRich() )
1659 {
1660 ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, len ? len : 0x7fffffff);
1661 }
1662 else
1663 #endif // wxUSE_RICHEDIT
1664 {
1665 wxTextEntry::SetMaxLength(len);
1666 }
1667 }
1668
1669 // ----------------------------------------------------------------------------
1670 // Undo/redo
1671 // ----------------------------------------------------------------------------
1672
1673 void wxTextCtrl::Redo()
1674 {
1675 #if wxUSE_RICHEDIT
1676 if ( GetRichVersion() > 1 )
1677 {
1678 ::SendMessage(GetHwnd(), EM_REDO, 0, 0);
1679 return;
1680 }
1681 #endif // wxUSE_RICHEDIT
1682
1683 wxTextEntry::Redo();
1684 }
1685
1686 bool wxTextCtrl::CanRedo() const
1687 {
1688 #if wxUSE_RICHEDIT
1689 if ( GetRichVersion() > 1 )
1690 return ::SendMessage(GetHwnd(), EM_CANREDO, 0, 0) != 0;
1691 #endif // wxUSE_RICHEDIT
1692
1693 return wxTextEntry::CanRedo();
1694 }
1695
1696 // ----------------------------------------------------------------------------
1697 // caret handling (Windows only)
1698 // ----------------------------------------------------------------------------
1699
1700 bool wxTextCtrl::ShowNativeCaret(bool show)
1701 {
1702 if ( show != m_isNativeCaretShown )
1703 {
1704 if ( !(show ? ::ShowCaret(GetHwnd()) : ::HideCaret(GetHwnd())) )
1705 {
1706 // not an error, may simply indicate that it's not shown/hidden
1707 // yet (i.e. it had been hidden/shown 2 times before)
1708 return false;
1709 }
1710
1711 m_isNativeCaretShown = show;
1712 }
1713
1714 return true;
1715 }
1716
1717 // ----------------------------------------------------------------------------
1718 // implementation details
1719 // ----------------------------------------------------------------------------
1720
1721 void wxTextCtrl::Command(wxCommandEvent & event)
1722 {
1723 SetValue(event.GetString());
1724 ProcessCommand (event);
1725 }
1726
1727 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
1728 {
1729 // By default, load the first file into the text window.
1730 if (event.GetNumberOfFiles() > 0)
1731 {
1732 LoadFile(event.GetFiles()[0]);
1733 }
1734 }
1735
1736 // ----------------------------------------------------------------------------
1737 // kbd input processing
1738 // ----------------------------------------------------------------------------
1739
1740 bool wxTextCtrl::MSWShouldPreProcessMessage(WXMSG* msg)
1741 {
1742 // check for our special keys here: if we don't do it and the parent frame
1743 // uses them as accelerators, they wouldn't work at all, so we disable
1744 // usual preprocessing for them
1745 if ( msg->message == WM_KEYDOWN )
1746 {
1747 const WPARAM vkey = msg->wParam;
1748 if ( HIWORD(msg->lParam) & KF_ALTDOWN )
1749 {
1750 // Alt-Backspace is accelerator for "Undo"
1751 if ( vkey == VK_BACK )
1752 return false;
1753 }
1754 else // no Alt
1755 {
1756 // we want to process some Ctrl-foo and Shift-bar but no key
1757 // combinations without either Ctrl or Shift nor with both of them
1758 // pressed
1759 const int ctrl = wxIsCtrlDown(),
1760 shift = wxIsShiftDown();
1761 switch ( ctrl + shift )
1762 {
1763 default:
1764 wxFAIL_MSG( _T("how many modifiers have we got?") );
1765 // fall through
1766
1767 case 0:
1768 if ( IsMultiLine() && vkey == VK_RETURN )
1769 return false;
1770 // fall through
1771 case 2:
1772 break;
1773
1774 case 1:
1775 // either Ctrl or Shift pressed
1776 if ( ctrl )
1777 {
1778 switch ( vkey )
1779 {
1780 case 'C':
1781 case 'V':
1782 case 'X':
1783 case VK_INSERT:
1784 case VK_DELETE:
1785 case VK_HOME:
1786 case VK_END:
1787 return false;
1788 }
1789 }
1790 else // Shift is pressed
1791 {
1792 if ( vkey == VK_INSERT || vkey == VK_DELETE )
1793 return false;
1794 }
1795 }
1796 }
1797 }
1798
1799 return wxControl::MSWShouldPreProcessMessage(msg);
1800 }
1801
1802 void wxTextCtrl::OnChar(wxKeyEvent& event)
1803 {
1804 switch ( event.GetKeyCode() )
1805 {
1806 case WXK_RETURN:
1807 {
1808 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1809 InitCommandEvent(event);
1810 event.SetString(GetValue());
1811 if ( HandleWindowEvent(event) )
1812 if ( !HasFlag(wxTE_MULTILINE) )
1813 return;
1814 //else: multiline controls need Enter for themselves
1815 }
1816 break;
1817
1818 case WXK_TAB:
1819 // ok, so this is getting absolutely ridiculous but I don't see
1820 // any other way to fix this bug: when a multiline text control is
1821 // inside a wxFrame, we need to generate the navigation event as
1822 // otherwise nothing happens at all, but when the same control is
1823 // created inside a dialog, IsDialogMessage() *does* switch focus
1824 // all by itself and so if we do it here as well, it is advanced
1825 // twice and goes to the next control... to prevent this from
1826 // happening we're doing this ugly check, the logic being that if
1827 // we don't have focus then it had been already changed to the next
1828 // control
1829 //
1830 // the right thing to do would, of course, be to understand what
1831 // the hell is IsDialogMessage() doing but this is beyond my feeble
1832 // forces at the moment unfortunately
1833 if ( !(m_windowStyle & wxTE_PROCESS_TAB))
1834 {
1835 if ( FindFocus() == this )
1836 {
1837 int flags = 0;
1838 if (!event.ShiftDown())
1839 flags |= wxNavigationKeyEvent::IsForward ;
1840 if (event.ControlDown())
1841 flags |= wxNavigationKeyEvent::WinChange ;
1842 if (Navigate(flags))
1843 return;
1844 }
1845 }
1846 else
1847 {
1848 // Insert tab since calling the default Windows handler
1849 // doesn't seem to do it
1850 WriteText(wxT("\t"));
1851 return;
1852 }
1853 break;
1854 }
1855
1856 // no, we didn't process it
1857 event.Skip();
1858 }
1859
1860 void wxTextCtrl::OnKeyDown(wxKeyEvent& event)
1861 {
1862 // richedit control doesn't send WM_PASTE, WM_CUT and WM_COPY messages
1863 // when Ctrl-V, X or C is pressed and this prevents wxClipboardTextEvent
1864 // from working. So we work around it by intercepting these shortcuts
1865 // ourselves and emitting clipboard events (which richedit will handle,
1866 // so everything works as before, including pasting of rich text):
1867 if ( event.GetModifiers() == wxMOD_CONTROL && IsRich() )
1868 {
1869 switch ( event.GetKeyCode() )
1870 {
1871 case 'C':
1872 Copy();
1873 return;
1874 case 'X':
1875 Cut();
1876 return;
1877 case 'V':
1878 Paste();
1879 return;
1880 default:
1881 break;
1882 }
1883 }
1884
1885 // no, we didn't process it
1886 event.Skip();
1887 }
1888
1889 WXLRESULT wxTextCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
1890 {
1891 WXLRESULT lRc = wxTextCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
1892
1893 switch ( nMsg )
1894 {
1895 case WM_GETDLGCODE:
1896 {
1897 // we always want the chars and the arrows: the arrows for
1898 // navigation and the chars because we want Ctrl-C to work even
1899 // in a read only control
1900 long lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
1901
1902 if ( IsEditable() )
1903 {
1904 // we may have several different cases:
1905 // 1. normal: both TAB and ENTER are used for navigation
1906 // 2. ctrl wants TAB for itself: ENTER is used to pass to
1907 // the next control in the dialog
1908 // 3. ctrl wants ENTER for itself: TAB is used for dialog
1909 // navigation
1910 // 4. ctrl wants both TAB and ENTER: Ctrl-ENTER is used to
1911 // go to the next control (we need some way to do it)
1912
1913 // multiline controls should always get ENTER for themselves
1914 if ( HasFlag(wxTE_PROCESS_ENTER) || HasFlag(wxTE_MULTILINE) )
1915 lDlgCode |= DLGC_WANTMESSAGE;
1916
1917 if ( HasFlag(wxTE_PROCESS_TAB) )
1918 lDlgCode |= DLGC_WANTTAB;
1919
1920 lRc |= lDlgCode;
1921 }
1922 else // !editable
1923 {
1924 // NB: use "=", not "|=" as the base class version returns
1925 // the same flags is this state as usual (i.e.
1926 // including DLGC_WANTMESSAGE). This is strange (how
1927 // does it work in the native Win32 apps?) but for now
1928 // live with it.
1929 lRc = lDlgCode;
1930 }
1931 }
1932 break;
1933 }
1934
1935 return lRc;
1936 }
1937
1938 // ----------------------------------------------------------------------------
1939 // text control event processing
1940 // ----------------------------------------------------------------------------
1941
1942 bool wxTextCtrl::SendUpdateEvent()
1943 {
1944 switch ( m_updatesCount )
1945 {
1946 case 0:
1947 // remember that we've got an update
1948 m_updatesCount++;
1949 break;
1950
1951 case 1:
1952 // we had already sent one event since the last control modification
1953 return false;
1954
1955 default:
1956 wxFAIL_MSG( _T("unexpected wxTextCtrl::m_updatesCount value") );
1957 // fall through
1958
1959 case -1:
1960 // we hadn't updated the control ourselves, this event comes from
1961 // the user, don't need to ignore it nor update the count
1962 break;
1963
1964 case -2:
1965 // the control was updated programmatically and we do NOT want to
1966 // send events
1967 return false;
1968 }
1969
1970 return SendTextUpdatedEvent();
1971 }
1972
1973 bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
1974 {
1975 switch ( param )
1976 {
1977 case EN_CHANGE:
1978 SendUpdateEvent();
1979 break;
1980
1981 case EN_MAXTEXT:
1982 // the text size limit has been hit -- try to increase it
1983 if ( !AdjustSpaceLimit() )
1984 {
1985 wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, m_windowId);
1986 InitCommandEvent(event);
1987 event.SetString(GetValue());
1988 ProcessCommand(event);
1989 }
1990 break;
1991
1992 // the other edit notification messages are not processed (or, in
1993 // the case of EN_{SET/KILL}FOCUS were already handled at WM_SET/
1994 // KILLFOCUS level)
1995 default:
1996 return false;
1997 }
1998
1999 // processed
2000 return true;
2001 }
2002
2003 WXHBRUSH wxTextCtrl::MSWControlColor(WXHDC hDC, WXHWND hWnd)
2004 {
2005 if ( !IsEnabled() && !HasFlag(wxTE_MULTILINE) )
2006 return MSWControlColorDisabled(hDC);
2007
2008 return wxTextCtrlBase::MSWControlColor(hDC, hWnd);
2009 }
2010
2011 bool wxTextCtrl::HasSpaceLimit(unsigned int *len) const
2012 {
2013 // HACK: we try to automatically extend the limit for the amount of text
2014 // to allow (interactively) entering more than 64Kb of text under
2015 // Win9x but we shouldn't reset the text limit which was previously
2016 // set explicitly with SetMaxLength()
2017 //
2018 // Unfortunately there is no EM_GETLIMITTEXTSETBYUSER and so we don't
2019 // know the limit we set (if any). We could solve this by storing the
2020 // limit we set in wxTextCtrl but to save space we prefer to simply
2021 // test here the actual limit value: we consider that SetMaxLength()
2022 // can only be called for small values while EN_MAXTEXT is only sent
2023 // for large values (in practice the default limit seems to be 30000
2024 // but make it smaller just to be on the safe side)
2025 *len = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
2026 return *len < 10001;
2027
2028 }
2029
2030 bool wxTextCtrl::AdjustSpaceLimit()
2031 {
2032 unsigned int limit;
2033 if ( HasSpaceLimit(&limit) )
2034 return false;
2035
2036 unsigned int len = ::GetWindowTextLength(GetHwnd());
2037 if ( len >= limit )
2038 {
2039 // increment in 32Kb chunks
2040 SetMaxLength(len + 0x8000);
2041 }
2042
2043 // we changed the limit
2044 return true;
2045 }
2046
2047 bool wxTextCtrl::AcceptsFocusFromKeyboard() const
2048 {
2049 // we don't want focus if we can't be edited unless we're a multiline
2050 // control because then it might be still nice to get focus from keyboard
2051 // to be able to scroll it without mouse
2052 return (IsEditable() || IsMultiLine()) && wxControl::AcceptsFocus();
2053 }
2054
2055 wxSize wxTextCtrl::DoGetBestSize() const
2056 {
2057 int cx, cy;
2058 wxGetCharSize(GetHWND(), &cx, &cy, GetFont());
2059
2060 int wText = DEFAULT_ITEM_WIDTH;
2061
2062 int hText = cy;
2063 if ( m_windowStyle & wxTE_MULTILINE )
2064 {
2065 hText *= wxMax(wxMin(GetNumberOfLines(), 10), 2);
2066 }
2067 //else: for single line control everything is ok
2068
2069 // we have to add the adjustments for the control height only once, not
2070 // once per line, so do it after multiplication above
2071 hText += EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy) - cy;
2072
2073 return wxSize(wText, hText);
2074 }
2075
2076 // ----------------------------------------------------------------------------
2077 // standard handlers for standard edit menu events
2078 // ----------------------------------------------------------------------------
2079
2080 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
2081 {
2082 Cut();
2083 }
2084
2085 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
2086 {
2087 Copy();
2088 }
2089
2090 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
2091 {
2092 Paste();
2093 }
2094
2095 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
2096 {
2097 Undo();
2098 }
2099
2100 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
2101 {
2102 Redo();
2103 }
2104
2105 void wxTextCtrl::OnDelete(wxCommandEvent& WXUNUSED(event))
2106 {
2107 RemoveSelection();
2108 }
2109
2110 void wxTextCtrl::OnSelectAll(wxCommandEvent& WXUNUSED(event))
2111 {
2112 SelectAll();
2113 }
2114
2115 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
2116 {
2117 event.Enable( CanCut() );
2118 }
2119
2120 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
2121 {
2122 event.Enable( CanCopy() );
2123 }
2124
2125 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
2126 {
2127 event.Enable( CanPaste() );
2128 }
2129
2130 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
2131 {
2132 event.Enable( CanUndo() );
2133 }
2134
2135 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
2136 {
2137 event.Enable( CanRedo() );
2138 }
2139
2140 void wxTextCtrl::OnUpdateDelete(wxUpdateUIEvent& event)
2141 {
2142 event.Enable( HasSelection() && IsEditable() );
2143 }
2144
2145 void wxTextCtrl::OnUpdateSelectAll(wxUpdateUIEvent& event)
2146 {
2147 event.Enable( !IsEmpty() );
2148 }
2149
2150 void wxTextCtrl::OnContextMenu(wxContextMenuEvent& event)
2151 {
2152 #if wxUSE_RICHEDIT
2153 if (IsRich())
2154 {
2155 if (!m_privateContextMenu)
2156 {
2157 m_privateContextMenu = new wxMenu;
2158 m_privateContextMenu->Append(wxID_UNDO, _("&Undo"));
2159 m_privateContextMenu->Append(wxID_REDO, _("&Redo"));
2160 m_privateContextMenu->AppendSeparator();
2161 m_privateContextMenu->Append(wxID_CUT, _("Cu&t"));
2162 m_privateContextMenu->Append(wxID_COPY, _("&Copy"));
2163 m_privateContextMenu->Append(wxID_PASTE, _("&Paste"));
2164 m_privateContextMenu->Append(wxID_CLEAR, _("&Delete"));
2165 m_privateContextMenu->AppendSeparator();
2166 m_privateContextMenu->Append(wxID_SELECTALL, _("Select &All"));
2167 }
2168 PopupMenu(m_privateContextMenu);
2169 return;
2170 }
2171 else
2172 #endif
2173 event.Skip();
2174 }
2175
2176 void wxTextCtrl::OnSetFocus(wxFocusEvent& event)
2177 {
2178 // be sure the caret remains invisible if the user had hidden it
2179 if ( !m_isNativeCaretShown )
2180 {
2181 ::HideCaret(GetHwnd());
2182 }
2183
2184 event.Skip();
2185 }
2186
2187 // ----------------------------------------------------------------------------
2188 // Default colors for MSW text control
2189 //
2190 // Set default background color to the native white instead of
2191 // the default wxSYS_COLOUR_BTNFACE (is triggered with wxNullColour).
2192 // ----------------------------------------------------------------------------
2193
2194 wxVisualAttributes wxTextCtrl::GetDefaultAttributes() const
2195 {
2196 wxVisualAttributes attrs;
2197 attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
2198 attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
2199 attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW); //white
2200
2201 return attrs;
2202 }
2203
2204 // the rest of the file only deals with the rich edit controls
2205 #if wxUSE_RICHEDIT
2206
2207 // ----------------------------------------------------------------------------
2208 // EN_LINK processing
2209 // ----------------------------------------------------------------------------
2210
2211 bool wxTextCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
2212 {
2213 NMHDR *hdr = (NMHDR* )lParam;
2214 switch ( hdr->code )
2215 {
2216 case EN_MSGFILTER:
2217 {
2218 const MSGFILTER *msgf = (MSGFILTER *)lParam;
2219 UINT msg = msgf->msg;
2220
2221 // this is a bit crazy but richedit 1.0 sends us all mouse
2222 // events _except_ WM_LBUTTONUP (don't ask me why) so we have
2223 // generate the wxWin events for this message manually
2224 //
2225 // NB: in fact, this is still not totally correct as it does
2226 // send us WM_LBUTTONUP if the selection was cleared by the
2227 // last click -- so currently we get 2 events in this case,
2228 // but as I don't see any obvious way to check for this I
2229 // leave this code in place because it's still better than
2230 // not getting left up events at all
2231 if ( msg == WM_LBUTTONUP )
2232 {
2233 WXUINT flags = msgf->wParam;
2234 int x = GET_X_LPARAM(msgf->lParam),
2235 y = GET_Y_LPARAM(msgf->lParam);
2236
2237 HandleMouseEvent(msg, x, y, flags);
2238 }
2239 }
2240
2241 // return true to process the event (and false to ignore it)
2242 return true;
2243
2244 case EN_LINK:
2245 {
2246 const ENLINK *enlink = (ENLINK *)hdr;
2247
2248 switch ( enlink->msg )
2249 {
2250 case WM_SETCURSOR:
2251 // ok, so it is hardcoded - do we really nee to
2252 // customize it?
2253 {
2254 wxCursor cur(wxCURSOR_HAND);
2255 ::SetCursor(GetHcursorOf(cur));
2256 *result = TRUE;
2257 break;
2258 }
2259
2260 case WM_MOUSEMOVE:
2261 case WM_LBUTTONDOWN:
2262 case WM_LBUTTONUP:
2263 case WM_LBUTTONDBLCLK:
2264 case WM_RBUTTONDOWN:
2265 case WM_RBUTTONUP:
2266 case WM_RBUTTONDBLCLK:
2267 // send a mouse event
2268 {
2269 static const wxEventType eventsMouse[] =
2270 {
2271 wxEVT_MOTION,
2272 wxEVT_LEFT_DOWN,
2273 wxEVT_LEFT_UP,
2274 wxEVT_LEFT_DCLICK,
2275 wxEVT_RIGHT_DOWN,
2276 wxEVT_RIGHT_UP,
2277 wxEVT_RIGHT_DCLICK,
2278 };
2279
2280 // the event ids are consecutive
2281 wxMouseEvent
2282 evtMouse(eventsMouse[enlink->msg - WM_MOUSEMOVE]);
2283
2284 InitMouseEvent(evtMouse,
2285 GET_X_LPARAM(enlink->lParam),
2286 GET_Y_LPARAM(enlink->lParam),
2287 enlink->wParam);
2288
2289 wxTextUrlEvent event(m_windowId, evtMouse,
2290 enlink->chrg.cpMin,
2291 enlink->chrg.cpMax);
2292
2293 InitCommandEvent(event);
2294
2295 *result = ProcessCommand(event);
2296 }
2297 break;
2298 }
2299 }
2300 return true;
2301 }
2302
2303 // not processed, leave it to the base class
2304 return wxTextCtrlBase::MSWOnNotify(idCtrl, lParam, result);
2305 }
2306
2307 #if wxUSE_DRAG_AND_DROP
2308
2309 void wxTextCtrl::SetDropTarget(wxDropTarget *dropTarget)
2310 {
2311 if ( m_dropTarget == wxRICHTEXT_DEFAULT_DROPTARGET )
2312 {
2313 // get rid of the built-in drop target
2314 ::RevokeDragDrop(GetHwnd());
2315 m_dropTarget = NULL;
2316 }
2317
2318 wxTextCtrlBase::SetDropTarget(dropTarget);
2319 }
2320
2321 #endif // wxUSE_DRAG_AND_DROP
2322
2323 // ----------------------------------------------------------------------------
2324 // colour setting for the rich edit controls
2325 // ----------------------------------------------------------------------------
2326
2327 bool wxTextCtrl::SetBackgroundColour(const wxColour& colour)
2328 {
2329 if ( !wxTextCtrlBase::SetBackgroundColour(colour) )
2330 {
2331 // colour didn't really change
2332 return false;
2333 }
2334
2335 if ( IsRich() )
2336 {
2337 // rich edit doesn't use WM_CTLCOLOR, hence we need to send
2338 // EM_SETBKGNDCOLOR additionally
2339 ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour));
2340 }
2341
2342 return true;
2343 }
2344
2345 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
2346 {
2347 if ( !wxTextCtrlBase::SetForegroundColour(colour) )
2348 {
2349 // colour didn't really change
2350 return false;
2351 }
2352
2353 if ( IsRich() )
2354 {
2355 // change the colour of everything
2356 CHARFORMAT cf;
2357 wxZeroMemory(cf);
2358 cf.cbSize = sizeof(cf);
2359 cf.dwMask = CFM_COLOR;
2360 cf.crTextColor = wxColourToRGB(colour);
2361 ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf);
2362 }
2363
2364 return true;
2365 }
2366
2367 // ----------------------------------------------------------------------------
2368 // styling support for rich edit controls
2369 // ----------------------------------------------------------------------------
2370
2371 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
2372 {
2373 if ( !IsRich() )
2374 {
2375 // can't do it with normal text control
2376 return false;
2377 }
2378
2379 // the richedit 1.0 doesn't handle setting background colour, so don't
2380 // even try to do anything if it's the only thing we want to change
2381 if ( m_verRichEdit == 1 && !style.HasFont() && !style.HasTextColour() &&
2382 !style.HasLeftIndent() && !style.HasRightIndent() && !style.HasAlignment() &&
2383 !style.HasTabs() )
2384 {
2385 // nothing to do: return true if there was really nothing to do and
2386 // false if we failed to set bg colour
2387 return !style.HasBackgroundColour();
2388 }
2389
2390 // order the range if needed
2391 if ( start > end )
2392 {
2393 long tmp = start;
2394 start = end;
2395 end = tmp;
2396 }
2397
2398 // we can only change the format of the selection, so select the range we
2399 // want and restore the old selection later
2400 long startOld, endOld;
2401 GetSelection(&startOld, &endOld);
2402
2403 // but do we really have to change the selection?
2404 bool changeSel = start != startOld || end != endOld;
2405
2406 if ( changeSel )
2407 {
2408 DoSetSelection(start, end, SetSel_NoScroll);
2409 }
2410
2411 // initialize CHARFORMAT struct
2412 #if wxUSE_RICHEDIT2
2413 CHARFORMAT2 cf;
2414 #else
2415 CHARFORMAT cf;
2416 #endif
2417
2418 wxZeroMemory(cf);
2419
2420 // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2421 // CHARFORMAT in that case
2422 #if wxUSE_RICHEDIT2
2423 if ( m_verRichEdit == 1 )
2424 {
2425 // this is the only thing the control is going to grok
2426 cf.cbSize = sizeof(CHARFORMAT);
2427 }
2428 else
2429 #endif
2430 {
2431 // CHARFORMAT or CHARFORMAT2
2432 cf.cbSize = sizeof(cf);
2433 }
2434
2435 if ( style.HasFont() )
2436 {
2437 // VZ: CFM_CHARSET doesn't seem to do anything at all in RichEdit 2.0
2438 // but using it doesn't seem to hurt neither so leaving it for now
2439
2440 cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET |
2441 CFM_ITALIC | CFM_BOLD | CFM_UNDERLINE;
2442
2443 // fill in data from LOGFONT but recalculate lfHeight because we need
2444 // the real height in twips and not the negative number which
2445 // wxFillLogFont() returns (this is correct in general and works with
2446 // the Windows font mapper, but not here)
2447
2448 wxFont font(style.GetFont());
2449
2450 LOGFONT lf;
2451 wxFillLogFont(&lf, &font);
2452 cf.yHeight = 20*font.GetPointSize(); // 1 pt = 20 twips
2453 cf.bCharSet = lf.lfCharSet;
2454 cf.bPitchAndFamily = lf.lfPitchAndFamily;
2455 wxStrncpy( cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName) );
2456
2457 // also deal with underline/italic/bold attributes: note that we must
2458 // always set CFM_ITALIC &c bits in dwMask, even if we don't set the
2459 // style to allow clearing it
2460 if ( lf.lfItalic )
2461 {
2462 cf.dwEffects |= CFE_ITALIC;
2463 }
2464
2465 if ( lf.lfWeight == FW_BOLD )
2466 {
2467 cf.dwEffects |= CFE_BOLD;
2468 }
2469
2470 if ( lf.lfUnderline )
2471 {
2472 cf.dwEffects |= CFE_UNDERLINE;
2473 }
2474
2475 // strikeout fonts are not supported by wxWidgets
2476 }
2477
2478 if ( style.HasTextColour() )
2479 {
2480 cf.dwMask |= CFM_COLOR;
2481 cf.crTextColor = wxColourToRGB(style.GetTextColour());
2482 }
2483
2484 #if wxUSE_RICHEDIT2
2485 if ( m_verRichEdit != 1 && style.HasBackgroundColour() )
2486 {
2487 cf.dwMask |= CFM_BACKCOLOR;
2488 cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
2489 }
2490 #endif // wxUSE_RICHEDIT2
2491
2492 // do format the selection
2493 bool ok = ::SendMessage(GetHwnd(), EM_SETCHARFORMAT,
2494 SCF_SELECTION, (LPARAM)&cf) != 0;
2495 if ( !ok )
2496 {
2497 wxLogDebug(_T("SendMessage(EM_SETCHARFORMAT, SCF_SELECTION) failed"));
2498 }
2499
2500 // now do the paragraph formatting
2501 PARAFORMAT2 pf;
2502 wxZeroMemory(pf);
2503 // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2504 // PARAFORMAT in that case
2505 #if wxUSE_RICHEDIT2
2506 if ( m_verRichEdit == 1 )
2507 {
2508 // this is the only thing the control is going to grok
2509 pf.cbSize = sizeof(PARAFORMAT);
2510 }
2511 else
2512 #endif
2513 {
2514 // PARAFORMAT or PARAFORMAT2
2515 pf.cbSize = sizeof(pf);
2516 }
2517
2518 if (style.HasAlignment())
2519 {
2520 pf.dwMask |= PFM_ALIGNMENT;
2521 if (style.GetAlignment() == wxTEXT_ALIGNMENT_RIGHT)
2522 pf.wAlignment = PFA_RIGHT;
2523 else if (style.GetAlignment() == wxTEXT_ALIGNMENT_CENTRE)
2524 pf.wAlignment = PFA_CENTER;
2525 else if (style.GetAlignment() == wxTEXT_ALIGNMENT_JUSTIFIED)
2526 pf.wAlignment = PFA_JUSTIFY;
2527 else
2528 pf.wAlignment = PFA_LEFT;
2529 }
2530
2531 if (style.HasLeftIndent())
2532 {
2533 pf.dwMask |= PFM_STARTINDENT | PFM_OFFSET;
2534
2535 // Convert from 1/10 mm to TWIPS
2536 pf.dxStartIndent = (int) (((double) style.GetLeftIndent()) * mm2twips / 10.0) ;
2537 pf.dxOffset = (int) (((double) style.GetLeftSubIndent()) * mm2twips / 10.0) ;
2538 }
2539
2540 if (style.HasRightIndent())
2541 {
2542 pf.dwMask |= PFM_RIGHTINDENT;
2543
2544 // Convert from 1/10 mm to TWIPS
2545 pf.dxRightIndent = (int) (((double) style.GetRightIndent()) * mm2twips / 10.0) ;
2546 }
2547
2548 if (style.HasTabs())
2549 {
2550 pf.dwMask |= PFM_TABSTOPS;
2551
2552 const wxArrayInt& tabs = style.GetTabs();
2553
2554 pf.cTabCount = (SHORT)wxMin(tabs.GetCount(), MAX_TAB_STOPS);
2555 size_t i;
2556 for (i = 0; i < (size_t) pf.cTabCount; i++)
2557 {
2558 // Convert from 1/10 mm to TWIPS
2559 pf.rgxTabs[i] = (int) (((double) tabs[i]) * mm2twips / 10.0) ;
2560 }
2561 }
2562
2563 #if wxUSE_RICHEDIT2
2564 if ( m_verRichEdit > 1 )
2565 {
2566 if ( wxTheApp->GetLayoutDirection() == wxLayout_RightToLeft )
2567 {
2568 // Use RTL paragraphs in RTL mode to get proper layout
2569 pf.dwMask |= PFM_RTLPARA;
2570 pf.wEffects |= PFE_RTLPARA;
2571 }
2572 }
2573 #endif // wxUSE_RICHEDIT2
2574
2575 if ( pf.dwMask )
2576 {
2577 // do format the selection
2578 bool ok = ::SendMessage(GetHwnd(), EM_SETPARAFORMAT,
2579 0, (LPARAM) &pf) != 0;
2580 if ( !ok )
2581 {
2582 wxLogDebug(_T("SendMessage(EM_SETPARAFORMAT, 0) failed"));
2583 }
2584 }
2585
2586 if ( changeSel )
2587 {
2588 // restore the original selection
2589 DoSetSelection(startOld, endOld, SetSel_NoScroll);
2590 }
2591
2592 return ok;
2593 }
2594
2595 bool wxTextCtrl::SetDefaultStyle(const wxTextAttr& style)
2596 {
2597 if ( !wxTextCtrlBase::SetDefaultStyle(style) )
2598 return false;
2599
2600 if ( IsEditable() )
2601 {
2602 // we have to do this or the style wouldn't apply for the text typed by
2603 // the user
2604 wxTextPos posLast = GetLastPosition();
2605 SetStyle(posLast, posLast, m_defaultStyle);
2606 }
2607
2608 return true;
2609 }
2610
2611 bool wxTextCtrl::GetStyle(long position, wxTextAttr& style)
2612 {
2613 if ( !IsRich() )
2614 {
2615 // can't do it with normal text control
2616 return false;
2617 }
2618
2619 // initialize CHARFORMAT struct
2620 #if wxUSE_RICHEDIT2
2621 CHARFORMAT2 cf;
2622 #else
2623 CHARFORMAT cf;
2624 #endif
2625
2626 wxZeroMemory(cf);
2627
2628 // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2629 // CHARFORMAT in that case
2630 #if wxUSE_RICHEDIT2
2631 if ( m_verRichEdit == 1 )
2632 {
2633 // this is the only thing the control is going to grok
2634 cf.cbSize = sizeof(CHARFORMAT);
2635 }
2636 else
2637 #endif
2638 {
2639 // CHARFORMAT or CHARFORMAT2
2640 cf.cbSize = sizeof(cf);
2641 }
2642 // we can only change the format of the selection, so select the range we
2643 // want and restore the old selection later
2644 long startOld, endOld;
2645 GetSelection(&startOld, &endOld);
2646
2647 // but do we really have to change the selection?
2648 bool changeSel = position != startOld || position != endOld;
2649
2650 if ( changeSel )
2651 {
2652 DoSetSelection(position, position + 1, SetSel_NoScroll);
2653 }
2654
2655 // get the selection formatting
2656 (void) ::SendMessage(GetHwnd(), EM_GETCHARFORMAT,
2657 SCF_SELECTION, (LPARAM)&cf) ;
2658
2659
2660 LOGFONT lf;
2661 lf.lfHeight = cf.yHeight;
2662 lf.lfWidth = 0;
2663 lf.lfCharSet = ANSI_CHARSET; // FIXME: how to get correct charset?
2664 lf.lfClipPrecision = 0;
2665 lf.lfEscapement = 0;
2666 wxStrcpy(lf.lfFaceName, cf.szFaceName);
2667
2668 //NOTE: we _MUST_ set each of these values to _something_ since we
2669 //do not call wxZeroMemory on the LOGFONT lf
2670 if (cf.dwEffects & CFE_ITALIC)
2671 lf.lfItalic = TRUE;
2672 else
2673 lf.lfItalic = FALSE;
2674
2675 lf.lfOrientation = 0;
2676 lf.lfPitchAndFamily = cf.bPitchAndFamily;
2677 lf.lfQuality = 0;
2678
2679 if (cf.dwEffects & CFE_STRIKEOUT)
2680 lf.lfStrikeOut = TRUE;
2681 else
2682 lf.lfStrikeOut = FALSE;
2683
2684 if (cf.dwEffects & CFE_UNDERLINE)
2685 lf.lfUnderline = TRUE;
2686 else
2687 lf.lfUnderline = FALSE;
2688
2689 if (cf.dwEffects & CFE_BOLD)
2690 lf.lfWeight = FW_BOLD;
2691 else
2692 lf.lfWeight = FW_NORMAL;
2693
2694 wxFont font = wxCreateFontFromLogFont(& lf);
2695 if (font.Ok())
2696 {
2697 style.SetFont(font);
2698 }
2699 style.SetTextColour(wxColour(cf.crTextColor));
2700
2701 #if wxUSE_RICHEDIT2
2702 if ( m_verRichEdit != 1 )
2703 {
2704 // cf.dwMask |= CFM_BACKCOLOR;
2705 style.SetBackgroundColour(wxColour(cf.crBackColor));
2706 }
2707 #endif // wxUSE_RICHEDIT2
2708
2709 // now get the paragraph formatting
2710 PARAFORMAT2 pf;
2711 wxZeroMemory(pf);
2712 // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2713 // PARAFORMAT 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 pf.cbSize = sizeof(PARAFORMAT);
2719 }
2720 else
2721 #endif
2722 {
2723 // PARAFORMAT or PARAFORMAT2
2724 pf.cbSize = sizeof(pf);
2725 }
2726
2727 // do format the selection
2728 (void) ::SendMessage(GetHwnd(), EM_GETPARAFORMAT, 0, (LPARAM) &pf) ;
2729
2730 style.SetLeftIndent( (int) ((double) pf.dxStartIndent * twips2mm * 10.0), (int) ((double) pf.dxOffset * twips2mm * 10.0) );
2731 style.SetRightIndent( (int) ((double) pf.dxRightIndent * twips2mm * 10.0) );
2732
2733 if (pf.wAlignment == PFA_CENTER)
2734 style.SetAlignment(wxTEXT_ALIGNMENT_CENTRE);
2735 else if (pf.wAlignment == PFA_RIGHT)
2736 style.SetAlignment(wxTEXT_ALIGNMENT_RIGHT);
2737 else if (pf.wAlignment == PFA_JUSTIFY)
2738 style.SetAlignment(wxTEXT_ALIGNMENT_JUSTIFIED);
2739 else
2740 style.SetAlignment(wxTEXT_ALIGNMENT_LEFT);
2741
2742 wxArrayInt tabStops;
2743 size_t i;
2744 for (i = 0; i < (size_t) pf.cTabCount; i++)
2745 {
2746 tabStops.Add( (int) ((double) (pf.rgxTabs[i] & 0xFFFF) * twips2mm * 10.0) );
2747 }
2748
2749 if ( changeSel )
2750 {
2751 // restore the original selection
2752 DoSetSelection(startOld, endOld, SetSel_NoScroll);
2753 }
2754
2755 return true;
2756 }
2757
2758 // ----------------------------------------------------------------------------
2759 // wxRichEditModule
2760 // ----------------------------------------------------------------------------
2761
2762 static const HINSTANCE INVALID_HINSTANCE = (HINSTANCE)-1;
2763
2764 bool wxRichEditModule::OnInit()
2765 {
2766 // don't do anything - we will load it when needed
2767 return true;
2768 }
2769
2770 void wxRichEditModule::OnExit()
2771 {
2772 for ( size_t i = 0; i < WXSIZEOF(ms_hRichEdit); i++ )
2773 {
2774 if ( ms_hRichEdit[i] && ms_hRichEdit[i] != INVALID_HINSTANCE )
2775 {
2776 ::FreeLibrary(ms_hRichEdit[i]);
2777 ms_hRichEdit[i] = NULL;
2778 }
2779 }
2780 #if wxUSE_INKEDIT
2781 if (ms_inkEditLib.IsLoaded())
2782 ms_inkEditLib.Unload();
2783 #endif
2784 }
2785
2786 /* static */
2787 bool wxRichEditModule::Load(Version version)
2788 {
2789 if ( ms_hRichEdit[version] == INVALID_HINSTANCE )
2790 {
2791 // we had already tried to load it and failed
2792 return false;
2793 }
2794
2795 if ( ms_hRichEdit[version] )
2796 {
2797 // we've already got this one
2798 return true;
2799 }
2800
2801 static const wxChar *dllnames[] =
2802 {
2803 _T("riched32"),
2804 _T("riched20"),
2805 _T("msftedit"),
2806 };
2807
2808 wxCOMPILE_TIME_ASSERT( WXSIZEOF(dllnames) == Version_Max,
2809 RichEditDllNamesVersionsMismatch );
2810
2811 ms_hRichEdit[version] = ::LoadLibrary(dllnames[version]);
2812
2813 if ( !ms_hRichEdit[version] )
2814 {
2815 ms_hRichEdit[version] = INVALID_HINSTANCE;
2816
2817 return false;
2818 }
2819
2820 return true;
2821 }
2822
2823 #if wxUSE_INKEDIT
2824 // load the InkEdit library
2825 bool wxRichEditModule::LoadInkEdit()
2826 {
2827 static wxDynamicLibrary ms_inkEditLib;
2828 static bool ms_inkEditLibLoadAttemped;
2829 if (ms_inkEditLibLoadAttemped)
2830 ms_inkEditLib.IsLoaded();
2831
2832 ms_inkEditLibLoadAttemped = true;
2833
2834 wxLogNull logNull;
2835 return ms_inkEditLib.Load(wxT("inked"));
2836 }
2837 #endif // wxUSE_INKEDIT
2838
2839
2840 #endif // wxUSE_RICHEDIT
2841
2842 #endif // wxUSE_TEXTCTRL && !(__SMARTPHONE__ && __WXWINCE__)
wxWidgets (Impactor)