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