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Fix scrolling to the bottom in wxTextCtrl::AppendText().
[wxWidgets.git] / src / msw / textctrl.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: src/msw/textctrl.cpp
3 // Purpose: wxTextCtrl
4 // Author: Julian Smart
5 // Modified by:
6 // Created: 04/01/98
7 // RCS-ID: $Id$
8 // Copyright: (c) Julian Smart
9 // Licence: wxWindows licence
10 /////////////////////////////////////////////////////////////////////////////
11
12 // ============================================================================
13 // declarations
14 // ============================================================================
15
16 // ----------------------------------------------------------------------------
17 // headers
18 // ----------------------------------------------------------------------------
19
20 // For compilers that support precompilation, includes "wx.h".
21 #include "wx/wxprec.h"
22
23 #ifdef __BORLANDC__
24 #pragma hdrstop
25 #endif
26
27 #if wxUSE_TEXTCTRL && !(defined(__SMARTPHONE__) && defined(__WXWINCE__))
28
29 #ifndef WX_PRECOMP
30 #include "wx/textctrl.h"
31 #include "wx/settings.h"
32 #include "wx/brush.h"
33 #include "wx/utils.h"
34 #include "wx/intl.h"
35 #include "wx/log.h"
36 #include "wx/app.h"
37 #include "wx/menu.h"
38 #include "wx/math.h"
39 #include "wx/module.h"
40 #include "wx/wxcrtvararg.h"
41 #endif
42
43 #include "wx/sysopt.h"
44
45 #if wxUSE_CLIPBOARD
46 #include "wx/clipbrd.h"
47 #endif
48
49 #include "wx/textfile.h"
50
51 #include <windowsx.h>
52
53 #include "wx/msw/private.h"
54 #include "wx/msw/winundef.h"
55 #include "wx/msw/mslu.h"
56
57 #include <string.h>
58 #include <stdlib.h>
59
60 #ifndef __WXWINCE__
61 #include <sys/types.h>
62 #endif
63
64 #if wxUSE_RICHEDIT
65
66 #if wxUSE_INKEDIT
67 #include "wx/dynlib.h"
68 #endif
69
70 // old mingw32 has richedit stuff directly in windows.h and doesn't have
71 // richedit.h at all
72 #if !defined(__GNUWIN32_OLD__) || defined(__CYGWIN10__)
73 #include <richedit.h>
74 #endif
75
76 #endif // wxUSE_RICHEDIT
77
78 #include "wx/msw/missing.h"
79
80 #if wxUSE_DRAG_AND_DROP && wxUSE_RICHEDIT
81
82 // dummy value used for m_dropTarget, different from any valid pointer value
83 // (which are all even under Windows) and NULL
84 static wxDropTarget *
85 wxRICHTEXT_DEFAULT_DROPTARGET = reinterpret_cast<wxDropTarget *>(1);
86
87 #endif // wxUSE_DRAG_AND_DROP && wxUSE_RICHEDIT
88
89 // ----------------------------------------------------------------------------
90 // private classes
91 // ----------------------------------------------------------------------------
92
93 #if wxUSE_RICHEDIT
94
95 // this module initializes RichEdit DLL(s) if needed
96 class wxRichEditModule : public wxModule
97 {
98 public:
99 enum Version
100 {
101 Version_1, // riched32.dll
102 Version_2or3, // both use riched20.dll
103 Version_41, // msftedit.dll (XP SP1 and Windows 2003)
104 Version_Max
105 };
106
107 virtual bool OnInit();
108 virtual void OnExit();
109
110 // load the richedit DLL for the specified version of rich edit
111 static bool Load(Version version);
112
113 #if wxUSE_INKEDIT
114 // load the InkEdit library
115 static bool LoadInkEdit();
116 #endif
117
118 private:
119 // the handles to richedit 1.0 and 2.0 (or 3.0) DLLs
120 static HINSTANCE ms_hRichEdit[Version_Max];
121
122 #if wxUSE_INKEDIT
123 static wxDynamicLibrary ms_inkEditLib;
124 static bool ms_inkEditLibLoadAttemped;
125 #endif
126
127 DECLARE_DYNAMIC_CLASS(wxRichEditModule)
128 };
129
130 HINSTANCE wxRichEditModule::ms_hRichEdit[Version_Max] = { NULL, NULL, NULL };
131
132 #if wxUSE_INKEDIT
133 wxDynamicLibrary wxRichEditModule::ms_inkEditLib;
134 bool wxRichEditModule::ms_inkEditLibLoadAttemped = false;
135 #endif
136
137 IMPLEMENT_DYNAMIC_CLASS(wxRichEditModule, wxModule)
138
139 #endif // wxUSE_RICHEDIT
140
141 // a small class used to set m_updatesCount to 0 (to filter duplicate events if
142 // necessary) and to reset it back to -1 afterwards
143 class UpdatesCountFilter
144 {
145 public:
146 UpdatesCountFilter(int& count)
147 : m_count(count)
148 {
149 wxASSERT_MSG( m_count == -1 || m_count == -2,
150 wxT("wrong initial m_updatesCount value") );
151
152 if (m_count != -2)
153 m_count = 0;
154 //else: we don't want to count how many update events we get as we're going
155 // to ignore all of them
156 }
157
158 ~UpdatesCountFilter()
159 {
160 m_count = -1;
161 }
162
163 // return true if an event has been received
164 bool GotUpdate() const
165 {
166 return m_count == 1;
167 }
168
169 private:
170 int& m_count;
171
172 wxDECLARE_NO_COPY_CLASS(UpdatesCountFilter);
173 };
174
175 // ----------------------------------------------------------------------------
176 // event tables and other macros
177 // ----------------------------------------------------------------------------
178
179 #if wxUSE_EXTENDED_RTTI
180 WX_DEFINE_FLAGS( wxTextCtrlStyle )
181
182 wxBEGIN_FLAGS( wxTextCtrlStyle )
183 // new style border flags, we put them first to
184 // use them for streaming out
185 wxFLAGS_MEMBER(wxBORDER_SIMPLE)
186 wxFLAGS_MEMBER(wxBORDER_SUNKEN)
187 wxFLAGS_MEMBER(wxBORDER_DOUBLE)
188 wxFLAGS_MEMBER(wxBORDER_RAISED)
189 wxFLAGS_MEMBER(wxBORDER_STATIC)
190 wxFLAGS_MEMBER(wxBORDER_NONE)
191
192 // old style border flags
193 wxFLAGS_MEMBER(wxSIMPLE_BORDER)
194 wxFLAGS_MEMBER(wxSUNKEN_BORDER)
195 wxFLAGS_MEMBER(wxDOUBLE_BORDER)
196 wxFLAGS_MEMBER(wxRAISED_BORDER)
197 wxFLAGS_MEMBER(wxSTATIC_BORDER)
198 wxFLAGS_MEMBER(wxBORDER)
199
200 // standard window styles
201 wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
202 wxFLAGS_MEMBER(wxCLIP_CHILDREN)
203 wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
204 wxFLAGS_MEMBER(wxWANTS_CHARS)
205 wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
206 wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
207 wxFLAGS_MEMBER(wxVSCROLL)
208 wxFLAGS_MEMBER(wxHSCROLL)
209
210 wxFLAGS_MEMBER(wxTE_PROCESS_ENTER)
211 wxFLAGS_MEMBER(wxTE_PROCESS_TAB)
212 wxFLAGS_MEMBER(wxTE_MULTILINE)
213 wxFLAGS_MEMBER(wxTE_PASSWORD)
214 wxFLAGS_MEMBER(wxTE_READONLY)
215 wxFLAGS_MEMBER(wxHSCROLL)
216 wxFLAGS_MEMBER(wxTE_RICH)
217 wxFLAGS_MEMBER(wxTE_RICH2)
218 wxFLAGS_MEMBER(wxTE_AUTO_URL)
219 wxFLAGS_MEMBER(wxTE_NOHIDESEL)
220 wxFLAGS_MEMBER(wxTE_LEFT)
221 wxFLAGS_MEMBER(wxTE_CENTRE)
222 wxFLAGS_MEMBER(wxTE_RIGHT)
223 wxFLAGS_MEMBER(wxTE_DONTWRAP)
224 wxFLAGS_MEMBER(wxTE_CHARWRAP)
225 wxFLAGS_MEMBER(wxTE_WORDWRAP)
226
227 wxEND_FLAGS( wxTextCtrlStyle )
228
229 IMPLEMENT_DYNAMIC_CLASS_XTI(wxTextCtrl, wxControl,"wx/textctrl.h")
230
231 wxBEGIN_PROPERTIES_TABLE(wxTextCtrl)
232 wxEVENT_PROPERTY( TextUpdated , wxEVT_COMMAND_TEXT_UPDATED , wxCommandEvent )
233 wxEVENT_PROPERTY( TextEnter , wxEVT_COMMAND_TEXT_ENTER , wxCommandEvent )
234
235 wxPROPERTY( Font , wxFont , SetFont , GetFont , EMPTY_MACROVALUE, 0 /*flags*/ , wxT("Helpstring") , wxT("group") )
236 wxPROPERTY( Value , wxString , SetValue, GetValue, wxString() , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
237 wxPROPERTY_FLAGS( WindowStyle , wxTextCtrlStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
238 wxEND_PROPERTIES_TABLE()
239
240 wxBEGIN_HANDLERS_TABLE(wxTextCtrl)
241 wxEND_HANDLERS_TABLE()
242
243 wxCONSTRUCTOR_6( wxTextCtrl , wxWindow* , Parent , wxWindowID , Id , wxString , Value , wxPoint , Position , wxSize , Size , long , WindowStyle)
244 #else
245 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxTextCtrlBase)
246 #endif
247
248
249 BEGIN_EVENT_TABLE(wxTextCtrl, wxTextCtrlBase)
250 EVT_CHAR(wxTextCtrl::OnChar)
251 EVT_KEY_DOWN(wxTextCtrl::OnKeyDown)
252 EVT_DROP_FILES(wxTextCtrl::OnDropFiles)
253
254 #if wxUSE_RICHEDIT
255 EVT_CONTEXT_MENU(wxTextCtrl::OnContextMenu)
256 #endif
257
258 EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
259 EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
260 EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
261 EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
262 EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
263 EVT_MENU(wxID_CLEAR, wxTextCtrl::OnDelete)
264 EVT_MENU(wxID_SELECTALL, wxTextCtrl::OnSelectAll)
265
266 EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
267 EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
268 EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
269 EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
270 EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
271 EVT_UPDATE_UI(wxID_CLEAR, wxTextCtrl::OnUpdateDelete)
272 EVT_UPDATE_UI(wxID_SELECTALL, wxTextCtrl::OnUpdateSelectAll)
273
274 EVT_SET_FOCUS(wxTextCtrl::OnSetFocus)
275 END_EVENT_TABLE()
276
277 // ============================================================================
278 // implementation
279 // ============================================================================
280
281 // ----------------------------------------------------------------------------
282 // creation
283 // ----------------------------------------------------------------------------
284
285 void wxTextCtrl::Init()
286 {
287 #if wxUSE_RICHEDIT
288 m_verRichEdit = 0;
289 #endif // wxUSE_RICHEDIT
290
291 #if wxUSE_INKEDIT && wxUSE_RICHEDIT
292 m_isInkEdit = 0;
293 #endif
294
295 m_privateContextMenu = NULL;
296 m_updatesCount = -1;
297 m_isNativeCaretShown = true;
298 }
299
300 wxTextCtrl::~wxTextCtrl()
301 {
302 #if wxUSE_DRAG_AND_DROP && wxUSE_RICHEDIT
303 if ( m_dropTarget == wxRICHTEXT_DEFAULT_DROPTARGET )
304 {
305 // don't try to destroy this dummy pointer in the base class dtor
306 m_dropTarget = NULL;
307 }
308 #endif // wxUSE_DRAG_AND_DROP && wxUSE_RICHEDIT
309
310 delete m_privateContextMenu;
311 }
312
313 bool wxTextCtrl::Create(wxWindow *parent,
314 wxWindowID id,
315 const wxString& value,
316 const wxPoint& pos,
317 const wxSize& size,
318 long style,
319 const wxValidator& validator,
320 const wxString& name)
321 {
322 // base initialization
323 if ( !CreateControl(parent, id, pos, size, style, validator, name) )
324 return false;
325
326 if ( !MSWCreateText(value, pos, size) )
327 return false;
328
329 #if wxUSE_DRAG_AND_DROP && wxUSE_RICHEDIT
330 if ( IsRich() )
331 {
332 // rich text controls have a default associated drop target which
333 // allows them to receive (rich) text dropped on them, which is nice,
334 // but prevents us from associating a user-defined drop target with
335 // them as we need to unregister the old one first
336 //
337 // to make it work, we set m_dropTarget to this special value initially
338 // and check for it in our SetDropTarget()
339 m_dropTarget = wxRICHTEXT_DEFAULT_DROPTARGET;
340 }
341 #endif // wxUSE_DRAG_AND_DROP && wxUSE_RICHEDIT
342
343 return true;
344 }
345
346 // returns true if the platform should explicitly apply a theme border
347 bool wxTextCtrl::CanApplyThemeBorder() const
348 {
349 #ifdef __WXWINCE__
350 return false;
351 #else
352 // Standard text control already handles theming
353 return ((GetWindowStyle() & (wxTE_RICH|wxTE_RICH2)) != 0);
354 #endif
355 }
356
357 bool wxTextCtrl::MSWCreateText(const wxString& value,
358 const wxPoint& pos,
359 const wxSize& size)
360 {
361 // translate wxWin style flags to MSW ones
362 WXDWORD msStyle = MSWGetCreateWindowFlags();
363
364 // do create the control - either an EDIT or RICHEDIT
365 wxString windowClass = wxT("EDIT");
366
367 #if defined(__POCKETPC__) || defined(__SMARTPHONE__)
368 // A control that capitalizes the first letter
369 if ( HasFlag(wxTE_CAPITALIZE) )
370 windowClass = wxT("CAPEDIT");
371 #endif
372
373 #if wxUSE_RICHEDIT
374 if ( m_windowStyle & wxTE_AUTO_URL )
375 {
376 // automatic URL detection only works in RichEdit 2.0+
377 m_windowStyle |= wxTE_RICH2;
378 }
379
380 if ( m_windowStyle & wxTE_RICH2 )
381 {
382 // using richedit 2.0 implies using wxTE_RICH
383 m_windowStyle |= wxTE_RICH;
384 }
385
386 // we need to load the richedit DLL before creating the rich edit control
387 if ( m_windowStyle & wxTE_RICH )
388 {
389 // versions 2.0, 3.0 and 4.1 of rich edit are mostly compatible with
390 // each other but not with version 1.0, so we have separate flags for
391 // the version 1.0 and the others (and so m_verRichEdit may be 0 (plain
392 // EDIT control), 1 for version 1.0 or 2 for any higher version)
393 //
394 // notice that 1.0 has no Unicode support at all so in Unicode build we
395 // must use another version
396
397 #if wxUSE_UNICODE
398 m_verRichEdit = 2;
399 #else // !wxUSE_UNICODE
400 m_verRichEdit = m_windowStyle & wxTE_RICH2 ? 2 : 1;
401 #endif // wxUSE_UNICODE/!wxUSE_UNICODE
402
403 #if wxUSE_INKEDIT
404 // First test if we can load an ink edit control. Normally, all edit
405 // controls will be made ink edit controls if a tablet environment is
406 // found (or if msw.inkedit != 0 and the InkEd.dll is present).
407 // However, an application can veto ink edit controls by either specifying
408 // msw.inkedit = 0 or by removing wxTE_RICH[2] from the style.
409 //
410 if ((wxSystemSettings::HasFeature(wxSYS_TABLET_PRESENT) || wxSystemOptions::GetOptionInt(wxT("msw.inkedit")) != 0) &&
411 !(wxSystemOptions::HasOption(wxT("msw.inkedit")) && wxSystemOptions::GetOptionInt(wxT("msw.inkedit")) == 0))
412 {
413 if (wxRichEditModule::LoadInkEdit())
414 {
415 windowClass = INKEDIT_CLASS;
416
417 #if wxUSE_INKEDIT && wxUSE_RICHEDIT
418 m_isInkEdit = 1;
419 #endif
420
421 // Fake rich text version for other calls
422 m_verRichEdit = 2;
423 }
424 }
425 #endif
426
427 #if wxUSE_INKEDIT
428 if (!IsInkEdit())
429 #endif // wxUSE_INKEDIT
430 {
431 if ( m_verRichEdit == 2 )
432 {
433 if ( wxRichEditModule::Load(wxRichEditModule::Version_41) )
434 {
435 // yes, class name for version 4.1 really is 5.0
436 windowClass = wxT("RICHEDIT50W");
437 }
438 else if ( wxRichEditModule::Load(wxRichEditModule::Version_2or3) )
439 {
440 windowClass = wxT("RichEdit20")
441 #if wxUSE_UNICODE
442 wxT("W");
443 #else // ANSI
444 wxT("A");
445 #endif // Unicode/ANSI
446 }
447 else // failed to load msftedit.dll and riched20.dll
448 {
449 m_verRichEdit = 1;
450 }
451 }
452
453 if ( m_verRichEdit == 1 )
454 {
455 if ( wxRichEditModule::Load(wxRichEditModule::Version_1) )
456 {
457 windowClass = wxT("RICHEDIT");
458 }
459 else // failed to load any richedit control DLL
460 {
461 // only give the error msg once if the DLL can't be loaded
462 static bool s_errorGiven = false; // MT ok as only used by GUI
463
464 if ( !s_errorGiven )
465 {
466 wxLogError(_("Impossible to create a rich edit control, using simple text control instead. Please reinstall riched32.dll"));
467
468 s_errorGiven = true;
469 }
470
471 m_verRichEdit = 0;
472 }
473 }
474 } // !useInkEdit
475 }
476 #endif // wxUSE_RICHEDIT
477
478 // we need to turn '\n's into "\r\n"s for the multiline controls
479 wxString valueWin;
480 if ( m_windowStyle & wxTE_MULTILINE )
481 {
482 valueWin = wxTextFile::Translate(value, wxTextFileType_Dos);
483 }
484 else // single line
485 {
486 valueWin = value;
487 }
488
489 // suppress events sent during control creation: we're called either from
490 // the ctor and then we shouldn't generate any events for compatibility
491 // with the other ports, or from SetWindowStyleFlag() and then we shouldn't
492 // generate the events because our text doesn't really change, the fact
493 // that we (sometimes) need to recreate the control is just an
494 // implementation detail
495 m_updatesCount = -2;
496
497 if ( !MSWCreateControl(windowClass.wx_str(), msStyle, pos, size, valueWin) )
498 return false;
499
500 m_updatesCount = -1;
501
502 #if wxUSE_RICHEDIT
503 if (IsRich())
504 {
505 #if wxUSE_INKEDIT
506 if (IsInkEdit())
507 {
508 // Pass IEM_InsertText (0) as wParam, in order to have the ink always
509 // converted to text.
510 ::SendMessage(GetHwnd(), EM_SETINKINSERTMODE, 0, 0);
511
512 // Make sure the mouse can be used for input
513 ::SendMessage(GetHwnd(), EM_SETUSEMOUSEFORINPUT, 1, 0);
514 }
515 #endif
516
517 // enable the events we're interested in: we want to get EN_CHANGE as
518 // for the normal controls
519 LPARAM mask = ENM_CHANGE;
520
521 if (GetRichVersion() == 1 && !IsInkEdit())
522 {
523 // we also need EN_MSGFILTER for richedit 1.0 for the reasons
524 // explained in its handler
525 mask |= ENM_MOUSEEVENTS;
526
527 // we also need to force the appearance of the vertical scrollbar
528 // initially as otherwise the control doesn't refresh correctly
529 // after resize: but once the vertical scrollbar had been shown
530 // (even if it's subsequently hidden) it does
531 //
532 // this is clearly a bug and for now it has been only noticed under
533 // Windows XP, so if we're sure it works correctly under other
534 // systems we could do this only for XP
535 SetSize(-1, 1); // 1 is small enough to force vert scrollbar
536 SetInitialSize(size);
537 }
538 else if ( m_windowStyle & wxTE_AUTO_URL )
539 {
540 mask |= ENM_LINK;
541
542 ::SendMessage(GetHwnd(), EM_AUTOURLDETECT, TRUE, 0);
543 }
544
545 ::SendMessage(GetHwnd(), EM_SETEVENTMASK, 0, mask);
546 }
547 else
548 #endif // wxUSE_RICHEDIT
549 if ( HasFlag(wxTE_MULTILINE) && HasFlag(wxTE_READONLY) )
550 {
551 // non-rich read-only multiline controls have grey background by
552 // default under MSW but this is not always appropriate, so forcefully
553 // reset the background colour to normal default
554 //
555 // this is not ideal but, after a long discussion on wx-dev (see
556 // http://thread.gmane.org/gmane.comp.lib.wxwidgets.devel/116360/) it
557 // was finally deemed to be the best behaviour by default (and ideally
558 // we'd have a way to change this, see #11521)
559 SetBackgroundColour(GetClassDefaultAttributes().colBg);
560 }
561
562 #ifndef __WXWINCE__
563 // Without this, if we pass the size in the constructor and then don't change it,
564 // the themed borders will be drawn incorrectly.
565 SetWindowPos(GetHwnd(), NULL, 0, 0, 0, 0,
566 SWP_NOZORDER|SWP_NOMOVE|SWP_NOSIZE|SWP_NOACTIVATE|
567 SWP_FRAMECHANGED);
568 #endif
569
570 return true;
571 }
572
573 // Make sure the window style (etc.) reflects the HWND style (roughly)
574 void wxTextCtrl::AdoptAttributesFromHWND()
575 {
576 wxWindow::AdoptAttributesFromHWND();
577
578 HWND hWnd = GetHwnd();
579 long style = ::GetWindowLong(hWnd, GWL_STYLE);
580
581 // retrieve the style to see whether this is an edit or richedit ctrl
582 #if wxUSE_RICHEDIT
583 wxString classname = wxGetWindowClass(GetHWND());
584
585 if ( classname.IsSameAs(wxT("EDIT"), false /* no case */) )
586 {
587 m_verRichEdit = 0;
588 }
589 else // rich edit?
590 {
591 wxChar c;
592 if ( wxSscanf(classname, wxT("RichEdit%d0%c"), &m_verRichEdit, &c) != 2 )
593 {
594 wxLogDebug(wxT("Unknown edit control '%s'."), classname.c_str());
595
596 m_verRichEdit = 0;
597 }
598 }
599 #endif // wxUSE_RICHEDIT
600
601 if (style & ES_MULTILINE)
602 m_windowStyle |= wxTE_MULTILINE;
603 if (style & ES_PASSWORD)
604 m_windowStyle |= wxTE_PASSWORD;
605 if (style & ES_READONLY)
606 m_windowStyle |= wxTE_READONLY;
607 if (style & ES_WANTRETURN)
608 m_windowStyle |= wxTE_PROCESS_ENTER;
609 if (style & ES_CENTER)
610 m_windowStyle |= wxTE_CENTRE;
611 if (style & ES_RIGHT)
612 m_windowStyle |= wxTE_RIGHT;
613 }
614
615 WXDWORD wxTextCtrl::MSWGetStyle(long style, WXDWORD *exstyle) const
616 {
617 long msStyle = wxControl::MSWGetStyle(style, exstyle);
618
619 // styles which we always add by default
620 if ( style & wxTE_MULTILINE )
621 {
622 msStyle |= ES_MULTILINE | ES_WANTRETURN;
623 if ( !(style & wxTE_NO_VSCROLL) )
624 {
625 // always adjust the vertical scrollbar automatically if we have it
626 msStyle |= WS_VSCROLL | ES_AUTOVSCROLL;
627
628 #if wxUSE_RICHEDIT
629 // we have to use this style for the rich edit controls because
630 // without it the vertical scrollbar never appears at all in
631 // richedit 3.0 because of our ECO_NOHIDESEL hack (search for it)
632 if ( style & wxTE_RICH2 )
633 {
634 msStyle |= ES_DISABLENOSCROLL;
635 }
636 #endif // wxUSE_RICHEDIT
637 }
638
639 style |= wxTE_PROCESS_ENTER;
640 }
641 else // !multiline
642 {
643 // there is really no reason to not have this style for single line
644 // text controls
645 msStyle |= ES_AUTOHSCROLL;
646 }
647
648 // note that wxTE_DONTWRAP is the same as wxHSCROLL so if we have a horz
649 // scrollbar, there is no wrapping -- which makes sense
650 if ( style & wxTE_DONTWRAP )
651 {
652 // automatically scroll the control horizontally as necessary
653 //
654 // NB: ES_AUTOHSCROLL is needed for richedit controls or they don't
655 // show horz scrollbar at all, even in spite of WS_HSCROLL, and as
656 // it doesn't seem to do any harm for plain edit controls, add it
657 // always
658 msStyle |= WS_HSCROLL | ES_AUTOHSCROLL;
659 }
660
661 if ( style & wxTE_READONLY )
662 msStyle |= ES_READONLY;
663
664 if ( style & wxTE_PASSWORD )
665 msStyle |= ES_PASSWORD;
666
667 if ( style & wxTE_NOHIDESEL )
668 msStyle |= ES_NOHIDESEL;
669
670 // note that we can't do do "& wxTE_LEFT" as wxTE_LEFT == 0
671 if ( style & wxTE_CENTRE )
672 msStyle |= ES_CENTER;
673 else if ( style & wxTE_RIGHT )
674 msStyle |= ES_RIGHT;
675 else
676 msStyle |= ES_LEFT; // ES_LEFT is 0 as well but for consistency...
677
678 return msStyle;
679 }
680
681 void wxTextCtrl::SetWindowStyleFlag(long style)
682 {
683 // changing the alignment of the control dynamically works under Win2003
684 // (but not older Windows version: it seems to work under some versions of
685 // XP but not other ones, and we have no way to determine it so be
686 // conservative here) and only for plain EDIT controls (not RICH ones) and
687 // we have to recreate the control to make it always work
688 if ( IsRich() || wxGetWinVersion() < wxWinVersion_2003 )
689 {
690 const long alignMask = wxTE_LEFT | wxTE_CENTRE | wxTE_RIGHT;
691 if ( (style & alignMask) != (GetWindowStyle() & alignMask) )
692 {
693 const wxString value = GetValue();
694 const wxPoint pos = GetPosition();
695 const wxSize size = GetSize();
696
697 // delete the old window
698 HWND hwnd = GetHwnd();
699 DissociateHandle();
700 ::DestroyWindow(hwnd);
701
702 // create the new one with the updated flags
703 m_windowStyle = style;
704 MSWCreateText(value, pos, size);
705
706 // and make sure it has the same attributes as before
707 if ( m_hasFont )
708 {
709 // calling SetFont(m_font) would do nothing as the code would
710 // notice that the font didn't change, so force it to believe
711 // that it did
712 wxFont font = m_font;
713 m_font = wxNullFont;
714 SetFont(font);
715 }
716
717 if ( m_hasFgCol )
718 {
719 wxColour colFg = m_foregroundColour;
720 m_foregroundColour = wxNullColour;
721 SetForegroundColour(colFg);
722 }
723
724 if ( m_hasBgCol )
725 {
726 wxColour colBg = m_backgroundColour;
727 m_backgroundColour = wxNullColour;
728 SetBackgroundColour(colBg);
729 }
730
731 // note that text styles are lost but this is probably not a big
732 // problem: if you use styles, you probably don't use nor change
733 // alignment flags anyhow
734
735 return;
736 }
737 }
738
739 #if wxUSE_RICHEDIT
740 // we have to deal with some styles separately because they can't be
741 // changed by simply calling SetWindowLong(GWL_STYLE) but can be changed
742 // using richedit-specific EM_SETOPTIONS
743 if ( IsRich() &&
744 ((style & wxTE_NOHIDESEL) != (GetWindowStyle() & wxTE_NOHIDESEL)) )
745 {
746 bool set = (style & wxTE_NOHIDESEL) != 0;
747
748 ::SendMessage(GetHwnd(), EM_SETOPTIONS, set ? ECOOP_OR : ECOOP_AND,
749 set ? ECO_NOHIDESEL : ~ECO_NOHIDESEL);
750 }
751 #endif // wxUSE_RICHEDIT
752
753 wxControl::SetWindowStyleFlag(style);
754 }
755
756 // ----------------------------------------------------------------------------
757 // set/get the controls text
758 // ----------------------------------------------------------------------------
759
760 bool wxTextCtrl::IsEmpty() const
761 {
762 // this is an optimization for multiline controls containing a lot of text
763 if ( IsMultiLine() && GetNumberOfLines() != 1 )
764 return false;
765
766 return wxTextCtrlBase::IsEmpty();
767 }
768
769 wxString wxTextCtrl::GetValue() const
770 {
771 // range 0..-1 is special for GetRange() and means to retrieve all text
772 return GetRange(0, -1);
773 }
774
775 wxString wxTextCtrl::GetRange(long from, long to) const
776 {
777 wxString str;
778
779 if ( from >= to && to != -1 )
780 {
781 // nothing to retrieve
782 return str;
783 }
784
785 #if wxUSE_RICHEDIT
786 if ( IsRich() )
787 {
788 int len = GetWindowTextLength(GetHwnd());
789 if ( len > from )
790 {
791 if ( to == -1 )
792 to = len;
793
794 #if !wxUSE_UNICODE
795 // we must use EM_STREAMOUT if we don't want to lose all characters
796 // not representable in the current character set (EM_GETTEXTRANGE
797 // simply replaces them with question marks...)
798 if ( GetRichVersion() > 1 )
799 {
800 // we must have some encoding, otherwise any 8bit chars in the
801 // control are simply *lost* (replaced by '?')
802 wxFontEncoding encoding = wxFONTENCODING_SYSTEM;
803
804 wxFont font = m_defaultStyle.GetFont();
805 if ( !font.Ok() )
806 font = GetFont();
807
808 if ( font.Ok() )
809 {
810 encoding = font.GetEncoding();
811 }
812
813 #if wxUSE_INTL
814 if ( encoding == wxFONTENCODING_SYSTEM )
815 {
816 encoding = wxLocale::GetSystemEncoding();
817 }
818 #endif // wxUSE_INTL
819
820 if ( encoding == wxFONTENCODING_SYSTEM )
821 {
822 encoding = wxFONTENCODING_ISO8859_1;
823 }
824
825 str = StreamOut(encoding);
826
827 if ( !str.empty() )
828 {
829 // we have to manually extract the required part, luckily
830 // this is easy in this case as EOL characters in str are
831 // just LFs because we remove CRs in wxRichEditStreamOut
832 str = str.Mid(from, to - from);
833 }
834 }
835
836 // StreamOut() wasn't used or failed, try to do it in normal way
837 if ( str.empty() )
838 #endif // !wxUSE_UNICODE
839 {
840 // alloc one extra WORD as needed by the control
841 wxStringBuffer tmp(str, ++len);
842 wxChar *p = tmp;
843
844 TEXTRANGE textRange;
845 textRange.chrg.cpMin = from;
846 textRange.chrg.cpMax = to;
847 textRange.lpstrText = p;
848
849 (void)::SendMessage(GetHwnd(), EM_GETTEXTRANGE,
850 0, (LPARAM)&textRange);
851
852 if ( m_verRichEdit > 1 )
853 {
854 // RichEdit 2.0 uses just CR ('\r') for the
855 // newlines which is neither Unix nor Windows
856 // style - convert it to something reasonable
857 for ( ; *p; p++ )
858 {
859 if ( *p == wxT('\r') )
860 *p = wxT('\n');
861 }
862 }
863 }
864
865 if ( m_verRichEdit == 1 )
866 {
867 // convert to the canonical form - see comment below
868 str = wxTextFile::Translate(str, wxTextFileType_Unix);
869 }
870 }
871 //else: no text at all, leave the string empty
872 }
873 else
874 #endif // wxUSE_RICHEDIT
875 {
876 // retrieve all text: wxTextEntry method works even for multiline
877 // controls and must be used for single line ones to account for hints
878 str = wxTextEntry::GetValue();
879
880 // need only a range?
881 if ( from < to )
882 {
883 str = str.Mid(from, to - from);
884 }
885
886 // WM_GETTEXT uses standard DOS CR+LF (\r\n) convention - convert to the
887 // canonical one (same one as above) for consistency with the other kinds
888 // of controls and, more importantly, with the other ports
889 str = wxTextFile::Translate(str, wxTextFileType_Unix);
890 }
891
892 return str;
893 }
894
895 void wxTextCtrl::DoSetValue(const wxString& value, int flags)
896 {
897 // if the text is long enough, it's faster to just set it instead of first
898 // comparing it with the old one (chances are that it will be different
899 // anyhow, this comparison is there to avoid flicker for small single-line
900 // edit controls mostly)
901 if ( (value.length() > 0x400) || (value != DoGetValue()) )
902 {
903 DoWriteText(value, flags /* doesn't include SelectionOnly here */);
904
905 // mark the control as being not dirty - we changed its text, not the
906 // user
907 DiscardEdits();
908
909 // for compatibility, don't move the cursor when doing SetValue()
910 SetInsertionPoint(0);
911 }
912 else // same text
913 {
914 // still reset the modified flag even if the value didn't really change
915 // because now it comes from the program and not the user (and do it
916 // before generating the event so that the event handler could get the
917 // expected value from IsModified())
918 DiscardEdits();
919
920 // still send an event for consistency
921 if (flags & SetValue_SendEvent)
922 SendUpdateEvent();
923 }
924 }
925
926 #if wxUSE_RICHEDIT && (!wxUSE_UNICODE || wxUSE_UNICODE_MSLU)
927
928 // TODO: using memcpy() would improve performance a lot for big amounts of text
929
930 DWORD CALLBACK
931 wxRichEditStreamIn(DWORD_PTR dwCookie, BYTE *buf, LONG cb, LONG *pcb)
932 {
933 *pcb = 0;
934
935 const wchar_t ** const ppws = (const wchar_t **)dwCookie;
936
937 wchar_t *wbuf = (wchar_t *)buf;
938 const wchar_t *wpc = *ppws;
939 while ( cb && *wpc )
940 {
941 *wbuf++ = *wpc++;
942
943 cb -= sizeof(wchar_t);
944 (*pcb) += sizeof(wchar_t);
945 }
946
947 *ppws = wpc;
948
949 return 0;
950 }
951
952 // helper struct used to pass parameters from wxTextCtrl to wxRichEditStreamOut
953 struct wxStreamOutData
954 {
955 wchar_t *wpc;
956 size_t len;
957 };
958
959 DWORD CALLBACK
960 wxRichEditStreamOut(DWORD_PTR dwCookie, BYTE *buf, LONG cb, LONG *pcb)
961 {
962 *pcb = 0;
963
964 wxStreamOutData *data = (wxStreamOutData *)dwCookie;
965
966 const wchar_t *wbuf = (const wchar_t *)buf;
967 wchar_t *wpc = data->wpc;
968 while ( cb )
969 {
970 wchar_t wch = *wbuf++;
971
972 // turn "\r\n" into "\n" on the fly
973 if ( wch != L'\r' )
974 *wpc++ = wch;
975 else
976 data->len--;
977
978 cb -= sizeof(wchar_t);
979 (*pcb) += sizeof(wchar_t);
980 }
981
982 data->wpc = wpc;
983
984 return 0;
985 }
986
987
988 #if wxUSE_UNICODE_MSLU
989 #define UNUSED_IF_MSLU(param)
990 #else
991 #define UNUSED_IF_MSLU(param) param
992 #endif
993
994 bool
995 wxTextCtrl::StreamIn(const wxString& value,
996 wxFontEncoding UNUSED_IF_MSLU(encoding),
997 bool selectionOnly)
998 {
999 #if wxUSE_UNICODE_MSLU
1000 const wchar_t *wpc = value.c_str();
1001 #else // !wxUSE_UNICODE_MSLU
1002 wxCSConv conv(encoding);
1003
1004 const size_t len = conv.MB2WC(NULL, value.mb_str(), value.length());
1005
1006 if (len == wxCONV_FAILED)
1007 return false;
1008
1009 wxWCharBuffer wchBuf(len); // allocates one extra character
1010 wchar_t *wpc = wchBuf.data();
1011
1012 conv.MB2WC(wpc, value.mb_str(), len + 1);
1013 #endif // wxUSE_UNICODE_MSLU
1014
1015 // finally, stream it in the control
1016 EDITSTREAM eds;
1017 wxZeroMemory(eds);
1018 eds.dwCookie = (DWORD_PTR)&wpc;
1019 // the cast below is needed for broken (very) old mingw32 headers
1020 eds.pfnCallback = (EDITSTREAMCALLBACK)wxRichEditStreamIn;
1021
1022 // same problem as in DoWriteText(): we can get multiple events here
1023 UpdatesCountFilter ucf(m_updatesCount);
1024
1025 ::SendMessage(GetHwnd(), EM_STREAMIN,
1026 SF_TEXT |
1027 SF_UNICODE |
1028 (selectionOnly ? SFF_SELECTION : 0),
1029 (LPARAM)&eds);
1030
1031 // It's okay for EN_UPDATE to not be sent if the selection is empty and
1032 // the text is empty, otherwise warn the programmer about it.
1033 wxASSERT_MSG( ucf.GotUpdate() || ( !HasSelection() && value.empty() ),
1034 wxT("EM_STREAMIN didn't send EN_UPDATE?") );
1035
1036 if ( eds.dwError )
1037 {
1038 wxLogLastError(wxT("EM_STREAMIN"));
1039 }
1040
1041 return true;
1042 }
1043
1044 #if !wxUSE_UNICODE_MSLU
1045
1046 wxString
1047 wxTextCtrl::StreamOut(wxFontEncoding encoding, bool selectionOnly) const
1048 {
1049 wxString out;
1050
1051 const int len = GetWindowTextLength(GetHwnd());
1052
1053 wxWCharBuffer wchBuf(len);
1054 wchar_t *wpc = wchBuf.data();
1055
1056 wxStreamOutData data;
1057 data.wpc = wpc;
1058 data.len = len;
1059
1060 EDITSTREAM eds;
1061 wxZeroMemory(eds);
1062 eds.dwCookie = (DWORD)&data;
1063 eds.pfnCallback = wxRichEditStreamOut;
1064
1065 ::SendMessage
1066 (
1067 GetHwnd(),
1068 EM_STREAMOUT,
1069 SF_TEXT | SF_UNICODE | (selectionOnly ? SFF_SELECTION : 0),
1070 (LPARAM)&eds
1071 );
1072
1073 if ( eds.dwError )
1074 {
1075 wxLogLastError(wxT("EM_STREAMOUT"));
1076 }
1077 else // streamed out ok
1078 {
1079 // NUL-terminate the string because its length could have been
1080 // decreased by wxRichEditStreamOut
1081 *(wchBuf.data() + data.len) = L'\0';
1082
1083 // now convert to the given encoding (this is a possibly lossful
1084 // conversion but what else can we do)
1085 wxCSConv conv(encoding);
1086 size_t lenNeeded = conv.WC2MB(NULL, wchBuf, 0);
1087
1088 if ( lenNeeded != wxCONV_FAILED && lenNeeded++ )
1089 {
1090 conv.WC2MB(wxStringBuffer(out, lenNeeded), wchBuf, lenNeeded);
1091 }
1092 }
1093
1094 return out;
1095 }
1096
1097 #endif // !wxUSE_UNICODE_MSLU
1098
1099 #endif // wxUSE_RICHEDIT
1100
1101 void wxTextCtrl::WriteText(const wxString& value)
1102 {
1103 DoWriteText(value);
1104 }
1105
1106 void wxTextCtrl::DoWriteText(const wxString& value, int flags)
1107 {
1108 bool selectionOnly = (flags & SetValue_SelectionOnly) != 0;
1109 wxString valueDos;
1110 if ( m_windowStyle & wxTE_MULTILINE )
1111 valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
1112 else
1113 valueDos = value;
1114
1115 #if wxUSE_RICHEDIT
1116 // there are several complications with the rich edit controls here
1117 bool done = false;
1118 if ( IsRich() )
1119 {
1120 // first, ensure that the new text will be in the default style
1121 if ( !m_defaultStyle.IsDefault() )
1122 {
1123 long start, end;
1124 GetSelection(&start, &end);
1125 SetStyle(start, end, m_defaultStyle);
1126 }
1127
1128 #if wxUSE_UNICODE_MSLU
1129 // RichEdit doesn't have Unicode version of EM_REPLACESEL on Win9x,
1130 // but EM_STREAMIN works
1131 if ( wxUsingUnicowsDll() && GetRichVersion() > 1 )
1132 {
1133 done = StreamIn(valueDos, wxFONTENCODING_SYSTEM, selectionOnly);
1134 }
1135 #endif // wxUSE_UNICODE_MSLU
1136
1137 #if !wxUSE_UNICODE
1138 // next check if the text we're inserting must be shown in a non
1139 // default charset -- this only works for RichEdit > 1.0
1140 if ( GetRichVersion() > 1 )
1141 {
1142 wxFont font = m_defaultStyle.GetFont();
1143 if ( !font.Ok() )
1144 font = GetFont();
1145
1146 if ( font.Ok() )
1147 {
1148 wxFontEncoding encoding = font.GetEncoding();
1149 if ( encoding != wxFONTENCODING_SYSTEM )
1150 {
1151 // we have to use EM_STREAMIN to force richedit control 2.0+
1152 // to show any text in the non default charset -- otherwise
1153 // it thinks it knows better than we do and always shows it
1154 // in the default one
1155 done = StreamIn(valueDos, encoding, selectionOnly);
1156 }
1157 }
1158 }
1159 #endif // !wxUSE_UNICODE
1160 }
1161
1162 if ( !done )
1163 #endif // wxUSE_RICHEDIT
1164 {
1165 // in some cases we get 2 EN_CHANGE notifications after the SendMessage
1166 // call (this happens for plain EDITs with EM_REPLACESEL and under some
1167 // -- undetermined -- conditions with rich edit) and sometimes we don't
1168 // get any events at all (plain EDIT with WM_SETTEXT), so ensure that
1169 // we generate exactly one of them by ignoring all but the first one in
1170 // SendUpdateEvent() and generating one ourselves if we hadn't got any
1171 // notifications from Windows
1172 if ( !(flags & SetValue_SendEvent) )
1173 m_updatesCount = -2; // suppress any update event
1174
1175 UpdatesCountFilter ucf(m_updatesCount);
1176
1177 ::SendMessage(GetHwnd(), selectionOnly ? EM_REPLACESEL : WM_SETTEXT,
1178 // EM_REPLACESEL takes 1 to indicate the operation should be redoable
1179 selectionOnly ? 1 : 0, (LPARAM)valueDos.wx_str());
1180
1181 if ( !ucf.GotUpdate() && (flags & SetValue_SendEvent) )
1182 {
1183 SendUpdateEvent();
1184 }
1185 }
1186 }
1187
1188 void wxTextCtrl::AppendText(const wxString& text)
1189 {
1190 wxTextEntry::AppendText(text);
1191
1192 #if wxUSE_RICHEDIT
1193 // don't do this if we're frozen, saves some time
1194 if ( !IsFrozen() && IsMultiLine() && GetRichVersion() > 1 )
1195 {
1196 ::SendMessage(GetHwnd(), WM_VSCROLL, SB_BOTTOM, NULL);
1197 }
1198 #endif // wxUSE_RICHEDIT
1199 }
1200
1201 void wxTextCtrl::Clear()
1202 {
1203 ::SetWindowText(GetHwnd(), wxEmptyString);
1204
1205 if ( IsMultiLine() && !IsRich() )
1206 {
1207 // rich edit controls send EN_UPDATE from WM_SETTEXT handler themselves
1208 // but the normal ones don't -- make Clear() behaviour consistent by
1209 // always sending this event
1210 SendUpdateEvent();
1211 }
1212 }
1213
1214 #ifdef __WIN32__
1215
1216 bool wxTextCtrl::EmulateKeyPress(const wxKeyEvent& event)
1217 {
1218 SetFocus();
1219
1220 size_t lenOld = GetValue().length();
1221
1222 wxUint32 code = event.GetRawKeyCode();
1223 ::keybd_event((BYTE)code, 0, 0 /* key press */, 0);
1224 ::keybd_event((BYTE)code, 0, KEYEVENTF_KEYUP, 0);
1225
1226 // assume that any alphanumeric key changes the total number of characters
1227 // in the control - this should work in 99% of cases
1228 return GetValue().length() != lenOld;
1229 }
1230
1231 #endif // __WIN32__
1232
1233 // ----------------------------------------------------------------------------
1234 // Accessors
1235 // ----------------------------------------------------------------------------
1236
1237 void wxTextCtrl::SetInsertionPointEnd()
1238 {
1239 // we must not do anything if the caret is already there because calling
1240 // SetInsertionPoint() thaws the controls if Freeze() had been called even
1241 // if it doesn't actually move the caret anywhere and so the simple fact of
1242 // doing it results in horrible flicker when appending big amounts of text
1243 // to the control in a few chunks (see DoAddText() test in the text sample)
1244 const wxTextPos lastPosition = GetLastPosition();
1245 if ( GetInsertionPoint() == lastPosition )
1246 {
1247 return;
1248 }
1249
1250 SetInsertionPoint(lastPosition);
1251 }
1252
1253 long wxTextCtrl::GetInsertionPoint() const
1254 {
1255 #if wxUSE_RICHEDIT
1256 if ( IsRich() )
1257 {
1258 CHARRANGE range;
1259 range.cpMin = 0;
1260 range.cpMax = 0;
1261 ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
1262 return range.cpMin;
1263 }
1264 #endif // wxUSE_RICHEDIT
1265
1266 return wxTextEntry::GetInsertionPoint();
1267 }
1268
1269 wxTextPos wxTextCtrl::GetLastPosition() const
1270 {
1271 if ( IsMultiLine() )
1272 {
1273 int numLines = GetNumberOfLines();
1274 long posStartLastLine = XYToPosition(0, numLines - 1);
1275
1276 long lenLastLine = GetLengthOfLineContainingPos(posStartLastLine);
1277
1278 return posStartLastLine + lenLastLine;
1279 }
1280
1281 return wxTextEntry::GetLastPosition();
1282 }
1283
1284 // If the return values from and to are the same, there is no
1285 // selection.
1286 void wxTextCtrl::GetSelection(long *from, long *to) const
1287 {
1288 #if wxUSE_RICHEDIT
1289 if ( IsRich() )
1290 {
1291 CHARRANGE charRange;
1292 ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &charRange);
1293
1294 *from = charRange.cpMin;
1295 *to = charRange.cpMax;
1296 }
1297 else
1298 #endif // !wxUSE_RICHEDIT
1299 {
1300 wxTextEntry::GetSelection(from, to);
1301 }
1302 }
1303
1304 // ----------------------------------------------------------------------------
1305 // selection
1306 // ----------------------------------------------------------------------------
1307
1308 void wxTextCtrl::DoSetSelection(long from, long to, int flags)
1309 {
1310 HWND hWnd = GetHwnd();
1311
1312 #if wxUSE_RICHEDIT
1313 if ( IsRich() )
1314 {
1315 // if from and to are both -1, it means (in wxWidgets) that all text
1316 // should be selected, translate this into Windows convention
1317 if ( (from == -1) && (to == -1) )
1318 {
1319 from = 0;
1320 }
1321
1322 CHARRANGE range;
1323 range.cpMin = from;
1324 range.cpMax = to;
1325 ::SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM)&range);
1326 }
1327 else
1328 #endif // wxUSE_RICHEDIT
1329 {
1330 wxTextEntry::DoSetSelection(from, to, flags);
1331 }
1332
1333 if ( (flags & SetSel_Scroll) && !IsFrozen() )
1334 {
1335 #if wxUSE_RICHEDIT
1336 // richedit 3.0 (i.e. the version living in riched20.dll distributed
1337 // with Windows 2000 and beyond) doesn't honour EM_SCROLLCARET when
1338 // emulating richedit 2.0 unless the control has focus or ECO_NOHIDESEL
1339 // option is set (but it does work ok in richedit 1.0 mode...)
1340 //
1341 // so to make it work we either need to give focus to it here which
1342 // will probably create many problems (dummy focus events; window
1343 // containing the text control being brought to foreground
1344 // unexpectedly; ...) or to temporarily set ECO_NOHIDESEL which may
1345 // create other problems too -- and in fact it does because if we turn
1346 // on/off this style while appending the text to the control, the
1347 // vertical scrollbar never appears in it even if we append tons of
1348 // text and to work around this the only solution I found was to use
1349 // ES_DISABLENOSCROLL
1350 //
1351 // this is very ugly but I don't see any other way to make this work
1352 long style = 0;
1353 if ( GetRichVersion() > 1 )
1354 {
1355 if ( !HasFlag(wxTE_NOHIDESEL) )
1356 {
1357 // setting ECO_NOHIDESEL also sets WS_VISIBLE and possibly
1358 // others, remember the style so we can reset it later if needed
1359 style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1360 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1361 ECOOP_OR, ECO_NOHIDESEL);
1362 }
1363 //else: everything is already ok
1364 }
1365 #endif // wxUSE_RICHEDIT
1366
1367 ::SendMessage(hWnd, EM_SCROLLCARET, 0, (LPARAM)0);
1368
1369 #if wxUSE_RICHEDIT
1370 // restore ECO_NOHIDESEL if we changed it
1371 if ( GetRichVersion() > 1 && !HasFlag(wxTE_NOHIDESEL) )
1372 {
1373 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1374 ECOOP_AND, ~ECO_NOHIDESEL);
1375 if ( style != ::GetWindowLong(GetHwnd(), GWL_STYLE) )
1376 ::SetWindowLong(GetHwnd(), GWL_STYLE, style);
1377 }
1378 #endif // wxUSE_RICHEDIT
1379 }
1380 }
1381
1382 // ----------------------------------------------------------------------------
1383 // Working with files
1384 // ----------------------------------------------------------------------------
1385
1386 bool wxTextCtrl::DoLoadFile(const wxString& file, int fileType)
1387 {
1388 if ( wxTextCtrlBase::DoLoadFile(file, fileType) )
1389 {
1390 // update the size limit if needed
1391 AdjustSpaceLimit();
1392
1393 return true;
1394 }
1395
1396 return false;
1397 }
1398
1399 // ----------------------------------------------------------------------------
1400 // dirty status
1401 // ----------------------------------------------------------------------------
1402
1403 bool wxTextCtrl::IsModified() const
1404 {
1405 return ::SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0;
1406 }
1407
1408 void wxTextCtrl::MarkDirty()
1409 {
1410 ::SendMessage(GetHwnd(), EM_SETMODIFY, TRUE, 0);
1411 }
1412
1413 void wxTextCtrl::DiscardEdits()
1414 {
1415 ::SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0);
1416 }
1417
1418 // ----------------------------------------------------------------------------
1419 // Positions <-> coords
1420 // ----------------------------------------------------------------------------
1421
1422 int wxTextCtrl::GetNumberOfLines() const
1423 {
1424 return (int)::SendMessage(GetHwnd(), EM_GETLINECOUNT, 0, 0);
1425 }
1426
1427 long wxTextCtrl::XYToPosition(long x, long y) const
1428 {
1429 // This gets the char index for the _beginning_ of this line
1430 long charIndex = ::SendMessage(GetHwnd(), EM_LINEINDEX, y, 0);
1431
1432 return charIndex + x;
1433 }
1434
1435 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
1436 {
1437 HWND hWnd = GetHwnd();
1438
1439 // This gets the line number containing the character
1440 long lineNo;
1441 #if wxUSE_RICHEDIT
1442 if ( IsRich() )
1443 {
1444 lineNo = ::SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, pos);
1445 }
1446 else
1447 #endif // wxUSE_RICHEDIT
1448 {
1449 lineNo = ::SendMessage(hWnd, EM_LINEFROMCHAR, pos, 0);
1450 }
1451
1452 if ( lineNo == -1 )
1453 {
1454 // no such line
1455 return false;
1456 }
1457
1458 // This gets the char index for the _beginning_ of this line
1459 long charIndex = ::SendMessage(hWnd, EM_LINEINDEX, lineNo, 0);
1460 if ( charIndex == -1 )
1461 {
1462 return false;
1463 }
1464
1465 // The X position must therefore be the different between pos and charIndex
1466 if ( x )
1467 *x = pos - charIndex;
1468 if ( y )
1469 *y = lineNo;
1470
1471 return true;
1472 }
1473
1474 wxTextCtrlHitTestResult
1475 wxTextCtrl::HitTest(const wxPoint& pt, long *posOut) const
1476 {
1477 // first get the position from Windows
1478 LPARAM lParam;
1479
1480 #if wxUSE_RICHEDIT
1481 POINTL ptl;
1482 if ( IsRich() )
1483 {
1484 // for rich edit controls the position is passed iva the struct fields
1485 ptl.x = pt.x;
1486 ptl.y = pt.y;
1487 lParam = (LPARAM)&ptl;
1488 }
1489 else
1490 #endif // wxUSE_RICHEDIT
1491 {
1492 // for the plain ones, we are limited to 16 bit positions which are
1493 // combined in a single 32 bit value
1494 lParam = MAKELPARAM(pt.x, pt.y);
1495 }
1496
1497 LRESULT pos = ::SendMessage(GetHwnd(), EM_CHARFROMPOS, 0, lParam);
1498
1499 if ( pos == -1 )
1500 {
1501 // this seems to indicate an error...
1502 return wxTE_HT_UNKNOWN;
1503 }
1504
1505 #if wxUSE_RICHEDIT
1506 if ( !IsRich() )
1507 #endif // wxUSE_RICHEDIT
1508 {
1509 // for plain EDIT controls the higher word contains something else
1510 pos = LOWORD(pos);
1511 }
1512
1513
1514 // next determine where it is relatively to our point: EM_CHARFROMPOS
1515 // always returns the closest character but we need to be more precise, so
1516 // double check that we really are where it pretends
1517 POINTL ptReal;
1518
1519 #if wxUSE_RICHEDIT
1520 // FIXME: we need to distinguish between richedit 2 and 3 here somehow but
1521 // we don't know how to do it
1522 if ( IsRich() )
1523 {
1524 ::SendMessage(GetHwnd(), EM_POSFROMCHAR, (WPARAM)&ptReal, pos);
1525 }
1526 else
1527 #endif // wxUSE_RICHEDIT
1528 {
1529 LRESULT lRc = ::SendMessage(GetHwnd(), EM_POSFROMCHAR, pos, 0);
1530
1531 if ( lRc == -1 )
1532 {
1533 // this is apparently returned when pos corresponds to the last
1534 // position
1535 ptReal.x =
1536 ptReal.y = 0;
1537 }
1538 else
1539 {
1540 ptReal.x = LOWORD(lRc);
1541 ptReal.y = HIWORD(lRc);
1542 }
1543 }
1544
1545 wxTextCtrlHitTestResult rc;
1546
1547 if ( pt.y > ptReal.y + GetCharHeight() )
1548 rc = wxTE_HT_BELOW;
1549 else if ( pt.x > ptReal.x + GetCharWidth() )
1550 rc = wxTE_HT_BEYOND;
1551 else
1552 rc = wxTE_HT_ON_TEXT;
1553
1554 if ( posOut )
1555 *posOut = pos;
1556
1557 return rc;
1558 }
1559
1560 // ----------------------------------------------------------------------------
1561 //
1562 // ----------------------------------------------------------------------------
1563
1564 void wxTextCtrl::ShowPosition(long pos)
1565 {
1566 HWND hWnd = GetHwnd();
1567
1568 // To scroll to a position, we pass the number of lines and characters
1569 // to scroll *by*. This means that we need to:
1570 // (1) Find the line position of the current line.
1571 // (2) Find the line position of pos.
1572 // (3) Scroll by (pos - current).
1573 // For now, ignore the horizontal scrolling.
1574
1575 // Is this where scrolling is relative to - the line containing the caret?
1576 // Or is the first visible line??? Try first visible line.
1577 // int currentLineLineNo1 = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, -1, 0L);
1578
1579 int currentLineLineNo = (int)::SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, 0, 0);
1580
1581 int specifiedLineLineNo = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, pos, 0);
1582
1583 int linesToScroll = specifiedLineLineNo - currentLineLineNo;
1584
1585 if (linesToScroll != 0)
1586 ::SendMessage(hWnd, EM_LINESCROLL, 0, linesToScroll);
1587 }
1588
1589 long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const
1590 {
1591 return ::SendMessage(GetHwnd(), EM_LINELENGTH, pos, 0);
1592 }
1593
1594 int wxTextCtrl::GetLineLength(long lineNo) const
1595 {
1596 long pos = XYToPosition(0, lineNo);
1597
1598 return GetLengthOfLineContainingPos(pos);
1599 }
1600
1601 wxString wxTextCtrl::GetLineText(long lineNo) const
1602 {
1603 size_t len = (size_t)GetLineLength(lineNo) + 1;
1604
1605 // there must be at least enough place for the length WORD in the
1606 // buffer
1607 len += sizeof(WORD);
1608
1609 wxString str;
1610 {
1611 wxStringBufferLength tmp(str, len);
1612 wxChar *buf = tmp;
1613
1614 *(WORD *)buf = (WORD)len;
1615 len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf);
1616
1617 #if wxUSE_RICHEDIT
1618 if ( IsRich() )
1619 {
1620 // remove the '\r' returned by the rich edit control, the user code
1621 // should never see it
1622 if ( buf[len - 2] == wxT('\r') && buf[len - 1] == wxT('\n') )
1623 {
1624 // richedit 1.0 uses "\r\n" as line terminator, so remove "\r"
1625 // here and "\n" below
1626 buf[len - 2] = wxT('\n');
1627 len--;
1628 }
1629 else if ( buf[len - 1] == wxT('\r') )
1630 {
1631 // richedit 2.0+ uses only "\r", replace it with "\n"
1632 buf[len - 1] = wxT('\n');
1633 }
1634 }
1635 #endif // wxUSE_RICHEDIT
1636
1637 // remove the '\n' at the end, if any (this is how this function is
1638 // supposed to work according to the docs)
1639 if ( buf[len - 1] == wxT('\n') )
1640 {
1641 len--;
1642 }
1643
1644 buf[len] = 0;
1645 tmp.SetLength(len);
1646 }
1647
1648 return str;
1649 }
1650
1651 void wxTextCtrl::SetMaxLength(unsigned long len)
1652 {
1653 #if wxUSE_RICHEDIT
1654 if ( IsRich() )
1655 {
1656 ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, len ? len : 0x7fffffff);
1657 }
1658 else
1659 #endif // wxUSE_RICHEDIT
1660 {
1661 wxTextEntry::SetMaxLength(len);
1662 }
1663 }
1664
1665 // ----------------------------------------------------------------------------
1666 // Undo/redo
1667 // ----------------------------------------------------------------------------
1668
1669 void wxTextCtrl::Redo()
1670 {
1671 #if wxUSE_RICHEDIT
1672 if ( GetRichVersion() > 1 )
1673 {
1674 ::SendMessage(GetHwnd(), EM_REDO, 0, 0);
1675 return;
1676 }
1677 #endif // wxUSE_RICHEDIT
1678
1679 wxTextEntry::Redo();
1680 }
1681
1682 bool wxTextCtrl::CanRedo() const
1683 {
1684 #if wxUSE_RICHEDIT
1685 if ( GetRichVersion() > 1 )
1686 return ::SendMessage(GetHwnd(), EM_CANREDO, 0, 0) != 0;
1687 #endif // wxUSE_RICHEDIT
1688
1689 return wxTextEntry::CanRedo();
1690 }
1691
1692 // ----------------------------------------------------------------------------
1693 // caret handling (Windows only)
1694 // ----------------------------------------------------------------------------
1695
1696 bool wxTextCtrl::ShowNativeCaret(bool show)
1697 {
1698 if ( show != m_isNativeCaretShown )
1699 {
1700 if ( !(show ? ::ShowCaret(GetHwnd()) : ::HideCaret(GetHwnd())) )
1701 {
1702 // not an error, may simply indicate that it's not shown/hidden
1703 // yet (i.e. it had been hidden/shown 2 times before)
1704 return false;
1705 }
1706
1707 m_isNativeCaretShown = show;
1708 }
1709
1710 return true;
1711 }
1712
1713 // ----------------------------------------------------------------------------
1714 // implementation details
1715 // ----------------------------------------------------------------------------
1716
1717 void wxTextCtrl::Command(wxCommandEvent & event)
1718 {
1719 SetValue(event.GetString());
1720 ProcessCommand (event);
1721 }
1722
1723 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
1724 {
1725 // By default, load the first file into the text window.
1726 if (event.GetNumberOfFiles() > 0)
1727 {
1728 LoadFile(event.GetFiles()[0]);
1729 }
1730 }
1731
1732 // ----------------------------------------------------------------------------
1733 // kbd input processing
1734 // ----------------------------------------------------------------------------
1735
1736 bool wxTextCtrl::MSWShouldPreProcessMessage(WXMSG* msg)
1737 {
1738 // check for our special keys here: if we don't do it and the parent frame
1739 // uses them as accelerators, they wouldn't work at all, so we disable
1740 // usual preprocessing for them
1741 if ( msg->message == WM_KEYDOWN )
1742 {
1743 const WPARAM vkey = msg->wParam;
1744 if ( HIWORD(msg->lParam) & KF_ALTDOWN )
1745 {
1746 // Alt-Backspace is accelerator for "Undo"
1747 if ( vkey == VK_BACK )
1748 return false;
1749 }
1750 else // no Alt
1751 {
1752 // we want to process some Ctrl-foo and Shift-bar but no key
1753 // combinations without either Ctrl or Shift nor with both of them
1754 // pressed
1755 const int ctrl = wxIsCtrlDown(),
1756 shift = wxIsShiftDown();
1757 switch ( ctrl + shift )
1758 {
1759 default:
1760 wxFAIL_MSG( wxT("how many modifiers have we got?") );
1761 // fall through
1762
1763 case 0:
1764 if ( IsMultiLine() && vkey == VK_RETURN )
1765 return false;
1766 // fall through
1767 case 2:
1768 break;
1769
1770 case 1:
1771 // either Ctrl or Shift pressed
1772 if ( ctrl )
1773 {
1774 switch ( vkey )
1775 {
1776 case 'C':
1777 case 'V':
1778 case 'X':
1779 case VK_INSERT:
1780 case VK_DELETE:
1781 case VK_HOME:
1782 case VK_END:
1783 return false;
1784 }
1785 }
1786 else // Shift is pressed
1787 {
1788 if ( vkey == VK_INSERT || vkey == VK_DELETE )
1789 return false;
1790 }
1791 }
1792 }
1793 }
1794
1795 return wxControl::MSWShouldPreProcessMessage(msg);
1796 }
1797
1798 void wxTextCtrl::OnChar(wxKeyEvent& event)
1799 {
1800 switch ( event.GetKeyCode() )
1801 {
1802 case WXK_RETURN:
1803 {
1804 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1805 InitCommandEvent(event);
1806 event.SetString(GetValue());
1807 if ( HandleWindowEvent(event) )
1808 if ( !HasFlag(wxTE_MULTILINE) )
1809 return;
1810 //else: multiline controls need Enter for themselves
1811 }
1812 break;
1813
1814 case WXK_TAB:
1815 // ok, so this is getting absolutely ridiculous but I don't see
1816 // any other way to fix this bug: when a multiline text control is
1817 // inside a wxFrame, we need to generate the navigation event as
1818 // otherwise nothing happens at all, but when the same control is
1819 // created inside a dialog, IsDialogMessage() *does* switch focus
1820 // all by itself and so if we do it here as well, it is advanced
1821 // twice and goes to the next control... to prevent this from
1822 // happening we're doing this ugly check, the logic being that if
1823 // we don't have focus then it had been already changed to the next
1824 // control
1825 //
1826 // the right thing to do would, of course, be to understand what
1827 // the hell is IsDialogMessage() doing but this is beyond my feeble
1828 // forces at the moment unfortunately
1829 if ( !(m_windowStyle & wxTE_PROCESS_TAB))
1830 {
1831 if ( FindFocus() == this )
1832 {
1833 int flags = 0;
1834 if (!event.ShiftDown())
1835 flags |= wxNavigationKeyEvent::IsForward ;
1836 if (event.ControlDown())
1837 flags |= wxNavigationKeyEvent::WinChange ;
1838 if (Navigate(flags))
1839 return;
1840 }
1841 }
1842 else
1843 {
1844 // Insert tab since calling the default Windows handler
1845 // doesn't seem to do it
1846 WriteText(wxT("\t"));
1847 return;
1848 }
1849 break;
1850 }
1851
1852 // no, we didn't process it
1853 event.Skip();
1854 }
1855
1856 void wxTextCtrl::OnKeyDown(wxKeyEvent& event)
1857 {
1858 // richedit control doesn't send WM_PASTE, WM_CUT and WM_COPY messages
1859 // when Ctrl-V, X or C is pressed and this prevents wxClipboardTextEvent
1860 // from working. So we work around it by intercepting these shortcuts
1861 // ourselves and emitting clipboard events (which richedit will handle,
1862 // so everything works as before, including pasting of rich text):
1863 if ( event.GetModifiers() == wxMOD_CONTROL && IsRich() )
1864 {
1865 switch ( event.GetKeyCode() )
1866 {
1867 case 'C':
1868 Copy();
1869 return;
1870 case 'X':
1871 Cut();
1872 return;
1873 case 'V':
1874 Paste();
1875 return;
1876 default:
1877 break;
1878 }
1879 }
1880
1881 // no, we didn't process it
1882 event.Skip();
1883 }
1884
1885 WXLRESULT wxTextCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
1886 {
1887 WXLRESULT lRc = wxTextCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
1888
1889 switch ( nMsg )
1890 {
1891 case WM_GETDLGCODE:
1892 {
1893 // we always want the chars and the arrows: the arrows for
1894 // navigation and the chars because we want Ctrl-C to work even
1895 // in a read only control
1896 long lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
1897
1898 if ( IsEditable() )
1899 {
1900 // we may have several different cases:
1901 // 1. normal: both TAB and ENTER are used for navigation
1902 // 2. ctrl wants TAB for itself: ENTER is used to pass to
1903 // the next control in the dialog
1904 // 3. ctrl wants ENTER for itself: TAB is used for dialog
1905 // navigation
1906 // 4. ctrl wants both TAB and ENTER: Ctrl-ENTER is used to
1907 // go to the next control (we need some way to do it)
1908
1909 // multiline controls should always get ENTER for themselves
1910 if ( HasFlag(wxTE_PROCESS_ENTER) || HasFlag(wxTE_MULTILINE) )
1911 lDlgCode |= DLGC_WANTMESSAGE;
1912
1913 if ( HasFlag(wxTE_PROCESS_TAB) )
1914 lDlgCode |= DLGC_WANTTAB;
1915
1916 lRc |= lDlgCode;
1917 }
1918 else // !editable
1919 {
1920 // NB: use "=", not "|=" as the base class version returns
1921 // the same flags in the disabled state as usual (i.e.
1922 // including DLGC_WANTMESSAGE). This is strange (how
1923 // does it work in the native Win32 apps?) but for now
1924 // live with it.
1925 lRc = lDlgCode;
1926 }
1927 }
1928 break;
1929
1930 #if wxUSE_MENUS
1931 case WM_SETCURSOR:
1932 // rich text controls seem to have a bug and don't change the
1933 // cursor to the standard arrow one from the I-beam cursor usually
1934 // used by them even when a popup menu is shown (this works fine
1935 // for plain EDIT controls though), so explicitly work around this
1936 if ( IsRich() )
1937 {
1938 extern wxMenu *wxCurrentPopupMenu;
1939 if ( wxCurrentPopupMenu &&
1940 wxCurrentPopupMenu->GetInvokingWindow() == this )
1941 ::SetCursor(GetHcursorOf(*wxSTANDARD_CURSOR));
1942 }
1943 #endif // wxUSE_MENUS
1944 }
1945
1946 return lRc;
1947 }
1948
1949 // ----------------------------------------------------------------------------
1950 // text control event processing
1951 // ----------------------------------------------------------------------------
1952
1953 bool wxTextCtrl::SendUpdateEvent()
1954 {
1955 switch ( m_updatesCount )
1956 {
1957 case 0:
1958 // remember that we've got an update
1959 m_updatesCount++;
1960 break;
1961
1962 case 1:
1963 // we had already sent one event since the last control modification
1964 return false;
1965
1966 default:
1967 wxFAIL_MSG( wxT("unexpected wxTextCtrl::m_updatesCount value") );
1968 // fall through
1969
1970 case -1:
1971 // we hadn't updated the control ourselves, this event comes from
1972 // the user, don't need to ignore it nor update the count
1973 break;
1974
1975 case -2:
1976 // the control was updated programmatically and we do NOT want to
1977 // send events
1978 return false;
1979 }
1980
1981 return SendTextUpdatedEvent();
1982 }
1983
1984 bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
1985 {
1986 switch ( param )
1987 {
1988 case EN_CHANGE:
1989 SendUpdateEvent();
1990 break;
1991
1992 case EN_MAXTEXT:
1993 // the text size limit has been hit -- try to increase it
1994 if ( !AdjustSpaceLimit() )
1995 {
1996 wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, m_windowId);
1997 InitCommandEvent(event);
1998 event.SetString(GetValue());
1999 ProcessCommand(event);
2000 }
2001 break;
2002
2003 // the other edit notification messages are not processed (or, in
2004 // the case of EN_{SET/KILL}FOCUS were already handled at WM_SET/
2005 // KILLFOCUS level)
2006 default:
2007 return false;
2008 }
2009
2010 // processed
2011 return true;
2012 }
2013
2014 WXHBRUSH wxTextCtrl::MSWControlColor(WXHDC hDC, WXHWND hWnd)
2015 {
2016 if ( !IsEnabled() && !HasFlag(wxTE_MULTILINE) )
2017 return MSWControlColorDisabled(hDC);
2018
2019 return wxTextCtrlBase::MSWControlColor(hDC, hWnd);
2020 }
2021
2022 bool wxTextCtrl::HasSpaceLimit(unsigned int *len) const
2023 {
2024 // HACK: we try to automatically extend the limit for the amount of text
2025 // to allow (interactively) entering more than 64Kb of text under
2026 // Win9x but we shouldn't reset the text limit which was previously
2027 // set explicitly with SetMaxLength()
2028 //
2029 // Unfortunately there is no EM_GETLIMITTEXTSETBYUSER and so we don't
2030 // know the limit we set (if any). We could solve this by storing the
2031 // limit we set in wxTextCtrl but to save space we prefer to simply
2032 // test here the actual limit value: we consider that SetMaxLength()
2033 // can only be called for small values while EN_MAXTEXT is only sent
2034 // for large values (in practice the default limit seems to be 30000
2035 // but make it smaller just to be on the safe side)
2036 *len = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
2037 return *len < 10001;
2038
2039 }
2040
2041 bool wxTextCtrl::AdjustSpaceLimit()
2042 {
2043 unsigned int limit;
2044 if ( HasSpaceLimit(&limit) )
2045 return false;
2046
2047 unsigned int len = ::GetWindowTextLength(GetHwnd());
2048 if ( len >= limit )
2049 {
2050 // increment in 32Kb chunks
2051 SetMaxLength(len + 0x8000);
2052 }
2053
2054 // we changed the limit
2055 return true;
2056 }
2057
2058 bool wxTextCtrl::AcceptsFocusFromKeyboard() const
2059 {
2060 // we don't want focus if we can't be edited unless we're a multiline
2061 // control because then it might be still nice to get focus from keyboard
2062 // to be able to scroll it without mouse
2063 return (IsEditable() || IsMultiLine()) && wxControl::AcceptsFocus();
2064 }
2065
2066 wxSize wxTextCtrl::DoGetBestSize() const
2067 {
2068 int cx, cy;
2069 wxGetCharSize(GetHWND(), &cx, &cy, GetFont());
2070
2071 int wText = DEFAULT_ITEM_WIDTH;
2072
2073 int hText = cy;
2074 if ( m_windowStyle & wxTE_MULTILINE )
2075 {
2076 hText *= wxMax(wxMin(GetNumberOfLines(), 10), 2);
2077 }
2078 //else: for single line control everything is ok
2079
2080 // we have to add the adjustments for the control height only once, not
2081 // once per line, so do it after multiplication above
2082 hText += EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy) - cy;
2083
2084 return wxSize(wText, hText);
2085 }
2086
2087 // ----------------------------------------------------------------------------
2088 // standard handlers for standard edit menu events
2089 // ----------------------------------------------------------------------------
2090
2091 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
2092 {
2093 Cut();
2094 }
2095
2096 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
2097 {
2098 Copy();
2099 }
2100
2101 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
2102 {
2103 Paste();
2104 }
2105
2106 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
2107 {
2108 Undo();
2109 }
2110
2111 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
2112 {
2113 Redo();
2114 }
2115
2116 void wxTextCtrl::OnDelete(wxCommandEvent& WXUNUSED(event))
2117 {
2118 RemoveSelection();
2119 }
2120
2121 void wxTextCtrl::OnSelectAll(wxCommandEvent& WXUNUSED(event))
2122 {
2123 SelectAll();
2124 }
2125
2126 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
2127 {
2128 event.Enable( CanCut() );
2129 }
2130
2131 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
2132 {
2133 event.Enable( CanCopy() );
2134 }
2135
2136 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
2137 {
2138 event.Enable( CanPaste() );
2139 }
2140
2141 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
2142 {
2143 event.Enable( CanUndo() );
2144 }
2145
2146 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
2147 {
2148 event.Enable( CanRedo() );
2149 }
2150
2151 void wxTextCtrl::OnUpdateDelete(wxUpdateUIEvent& event)
2152 {
2153 event.Enable( HasSelection() && IsEditable() );
2154 }
2155
2156 void wxTextCtrl::OnUpdateSelectAll(wxUpdateUIEvent& event)
2157 {
2158 event.Enable( !IsEmpty() );
2159 }
2160
2161 void wxTextCtrl::OnContextMenu(wxContextMenuEvent& event)
2162 {
2163 #if wxUSE_RICHEDIT
2164 if (IsRich())
2165 {
2166 if (!m_privateContextMenu)
2167 {
2168 m_privateContextMenu = new wxMenu;
2169 m_privateContextMenu->Append(wxID_UNDO, _("&Undo"));
2170 m_privateContextMenu->Append(wxID_REDO, _("&Redo"));
2171 m_privateContextMenu->AppendSeparator();
2172 m_privateContextMenu->Append(wxID_CUT, _("Cu&t"));
2173 m_privateContextMenu->Append(wxID_COPY, _("&Copy"));
2174 m_privateContextMenu->Append(wxID_PASTE, _("&Paste"));
2175 m_privateContextMenu->Append(wxID_CLEAR, _("&Delete"));
2176 m_privateContextMenu->AppendSeparator();
2177 m_privateContextMenu->Append(wxID_SELECTALL, _("Select &All"));
2178 }
2179 PopupMenu(m_privateContextMenu);
2180 return;
2181 }
2182 else
2183 #endif
2184 event.Skip();
2185 }
2186
2187 void wxTextCtrl::OnSetFocus(wxFocusEvent& event)
2188 {
2189 // be sure the caret remains invisible if the user had hidden it
2190 if ( !m_isNativeCaretShown )
2191 {
2192 ::HideCaret(GetHwnd());
2193 }
2194
2195 event.Skip();
2196 }
2197
2198 // the rest of the file only deals with the rich edit controls
2199 #if wxUSE_RICHEDIT
2200
2201 // ----------------------------------------------------------------------------
2202 // EN_LINK processing
2203 // ----------------------------------------------------------------------------
2204
2205 bool wxTextCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
2206 {
2207 NMHDR *hdr = (NMHDR* )lParam;
2208 switch ( hdr->code )
2209 {
2210 case EN_MSGFILTER:
2211 {
2212 const MSGFILTER *msgf = (MSGFILTER *)lParam;
2213 UINT msg = msgf->msg;
2214
2215 // this is a bit crazy but richedit 1.0 sends us all mouse
2216 // events _except_ WM_LBUTTONUP (don't ask me why) so we have
2217 // generate the wxWin events for this message manually
2218 //
2219 // NB: in fact, this is still not totally correct as it does
2220 // send us WM_LBUTTONUP if the selection was cleared by the
2221 // last click -- so currently we get 2 events in this case,
2222 // but as I don't see any obvious way to check for this I
2223 // leave this code in place because it's still better than
2224 // not getting left up events at all
2225 if ( msg == WM_LBUTTONUP )
2226 {
2227 WXUINT flags = msgf->wParam;
2228 int x = GET_X_LPARAM(msgf->lParam),
2229 y = GET_Y_LPARAM(msgf->lParam);
2230
2231 HandleMouseEvent(msg, x, y, flags);
2232 }
2233 }
2234
2235 // return true to process the event (and false to ignore it)
2236 return true;
2237
2238 case EN_LINK:
2239 {
2240 const ENLINK *enlink = (ENLINK *)hdr;
2241
2242 switch ( enlink->msg )
2243 {
2244 case WM_SETCURSOR:
2245 // ok, so it is hardcoded - do we really nee to
2246 // customize it?
2247 {
2248 wxCursor cur(wxCURSOR_HAND);
2249 ::SetCursor(GetHcursorOf(cur));
2250 *result = TRUE;
2251 break;
2252 }
2253
2254 case WM_MOUSEMOVE:
2255 case WM_LBUTTONDOWN:
2256 case WM_LBUTTONUP:
2257 case WM_LBUTTONDBLCLK:
2258 case WM_RBUTTONDOWN:
2259 case WM_RBUTTONUP:
2260 case WM_RBUTTONDBLCLK:
2261 // send a mouse event
2262 {
2263 static const wxEventType eventsMouse[] =
2264 {
2265 wxEVT_MOTION,
2266 wxEVT_LEFT_DOWN,
2267 wxEVT_LEFT_UP,
2268 wxEVT_LEFT_DCLICK,
2269 wxEVT_RIGHT_DOWN,
2270 wxEVT_RIGHT_UP,
2271 wxEVT_RIGHT_DCLICK,
2272 };
2273
2274 // the event ids are consecutive
2275 wxMouseEvent
2276 evtMouse(eventsMouse[enlink->msg - WM_MOUSEMOVE]);
2277
2278 InitMouseEvent(evtMouse,
2279 GET_X_LPARAM(enlink->lParam),
2280 GET_Y_LPARAM(enlink->lParam),
2281 enlink->wParam);
2282
2283 wxTextUrlEvent event(m_windowId, evtMouse,
2284 enlink->chrg.cpMin,
2285 enlink->chrg.cpMax);
2286
2287 InitCommandEvent(event);
2288
2289 *result = ProcessCommand(event);
2290 }
2291 break;
2292 }
2293 }
2294 return true;
2295 }
2296
2297 // not processed, leave it to the base class
2298 return wxTextCtrlBase::MSWOnNotify(idCtrl, lParam, result);
2299 }
2300
2301 #if wxUSE_DRAG_AND_DROP
2302
2303 void wxTextCtrl::SetDropTarget(wxDropTarget *dropTarget)
2304 {
2305 if ( m_dropTarget == wxRICHTEXT_DEFAULT_DROPTARGET )
2306 {
2307 // get rid of the built-in drop target
2308 ::RevokeDragDrop(GetHwnd());
2309 m_dropTarget = NULL;
2310 }
2311
2312 wxTextCtrlBase::SetDropTarget(dropTarget);
2313 }
2314
2315 #endif // wxUSE_DRAG_AND_DROP
2316
2317 // ----------------------------------------------------------------------------
2318 // colour setting for the rich edit controls
2319 // ----------------------------------------------------------------------------
2320
2321 bool wxTextCtrl::SetBackgroundColour(const wxColour& colour)
2322 {
2323 if ( !wxTextCtrlBase::SetBackgroundColour(colour) )
2324 {
2325 // colour didn't really change
2326 return false;
2327 }
2328
2329 if ( IsRich() )
2330 {
2331 // rich edit doesn't use WM_CTLCOLOR, hence we need to send
2332 // EM_SETBKGNDCOLOR additionally
2333 ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour));
2334 }
2335
2336 return true;
2337 }
2338
2339 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
2340 {
2341 if ( !wxTextCtrlBase::SetForegroundColour(colour) )
2342 {
2343 // colour didn't really change
2344 return false;
2345 }
2346
2347 if ( IsRich() )
2348 {
2349 // change the colour of everything
2350 CHARFORMAT cf;
2351 wxZeroMemory(cf);
2352 cf.cbSize = sizeof(cf);
2353 cf.dwMask = CFM_COLOR;
2354 cf.crTextColor = wxColourToRGB(colour);
2355 ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf);
2356 }
2357
2358 return true;
2359 }
2360
2361 bool wxTextCtrl::SetFont(const wxFont& font)
2362 {
2363 if ( !wxTextCtrlBase::SetFont(font) )
2364 return false;
2365
2366 if ( IsRich() )
2367 {
2368 // Using WM_SETFONT doesn't work reliably with rich edit controls: as
2369 // an example, if we set a fixed width font for a richedit 4.1 control,
2370 // it's used for the ASCII characters but inserting any non-ASCII ones
2371 // switches the font to a proportional one, whether it's done
2372 // programmatically or not. So just use EM_SETCHARFORMAT for this too.
2373 wxTextAttr attr;
2374 attr.SetFont(font);
2375 SetDefaultStyle(attr);
2376 }
2377
2378 return true;
2379 }
2380
2381 // ----------------------------------------------------------------------------
2382 // styling support for rich edit controls
2383 // ----------------------------------------------------------------------------
2384
2385 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
2386 {
2387 if ( !IsRich() )
2388 {
2389 // can't do it with normal text control
2390 return false;
2391 }
2392
2393 // the richedit 1.0 doesn't handle setting background colour, so don't
2394 // even try to do anything if it's the only thing we want to change
2395 if ( m_verRichEdit == 1 && !style.HasFont() && !style.HasTextColour() &&
2396 !style.HasLeftIndent() && !style.HasRightIndent() && !style.HasAlignment() &&
2397 !style.HasTabs() )
2398 {
2399 // nothing to do: return true if there was really nothing to do and
2400 // false if we failed to set bg colour
2401 return !style.HasBackgroundColour();
2402 }
2403
2404 // order the range if needed
2405 if ( start > end )
2406 {
2407 long tmp = start;
2408 start = end;
2409 end = tmp;
2410 }
2411
2412 // we can only change the format of the selection, so select the range we
2413 // want and restore the old selection later
2414 long startOld, endOld;
2415 GetSelection(&startOld, &endOld);
2416
2417 // but do we really have to change the selection?
2418 bool changeSel = start != startOld || end != endOld;
2419
2420 if ( changeSel )
2421 {
2422 DoSetSelection(start, end, SetSel_NoScroll);
2423 }
2424
2425 // initialize CHARFORMAT struct
2426 #if wxUSE_RICHEDIT2
2427 CHARFORMAT2 cf;
2428 #else
2429 CHARFORMAT cf;
2430 #endif
2431
2432 wxZeroMemory(cf);
2433
2434 // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2435 // CHARFORMAT in that case
2436 #if wxUSE_RICHEDIT2
2437 if ( m_verRichEdit == 1 )
2438 {
2439 // this is the only thing the control is going to grok
2440 cf.cbSize = sizeof(CHARFORMAT);
2441 }
2442 else
2443 #endif
2444 {
2445 // CHARFORMAT or CHARFORMAT2
2446 cf.cbSize = sizeof(cf);
2447 }
2448
2449 if ( style.HasFont() )
2450 {
2451 // VZ: CFM_CHARSET doesn't seem to do anything at all in RichEdit 2.0
2452 // but using it doesn't seem to hurt neither so leaving it for now
2453
2454 cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET |
2455 CFM_ITALIC | CFM_BOLD | CFM_UNDERLINE;
2456
2457 // fill in data from LOGFONT but recalculate lfHeight because we need
2458 // the real height in twips and not the negative number which
2459 // wxFillLogFont() returns (this is correct in general and works with
2460 // the Windows font mapper, but not here)
2461
2462 wxFont font(style.GetFont());
2463
2464 LOGFONT lf;
2465 wxFillLogFont(&lf, &font);
2466 cf.yHeight = 20*font.GetPointSize(); // 1 pt = 20 twips
2467 cf.bCharSet = lf.lfCharSet;
2468 cf.bPitchAndFamily = lf.lfPitchAndFamily;
2469 wxStrlcpy(cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName));
2470
2471 // also deal with underline/italic/bold attributes: note that we must
2472 // always set CFM_ITALIC &c bits in dwMask, even if we don't set the
2473 // style to allow clearing it
2474 if ( lf.lfItalic )
2475 {
2476 cf.dwEffects |= CFE_ITALIC;
2477 }
2478
2479 if ( lf.lfWeight == FW_BOLD )
2480 {
2481 cf.dwEffects |= CFE_BOLD;
2482 }
2483
2484 if ( lf.lfUnderline )
2485 {
2486 cf.dwEffects |= CFE_UNDERLINE;
2487 }
2488
2489 // strikeout fonts are not supported by wxWidgets
2490 }
2491
2492 if ( style.HasTextColour() )
2493 {
2494 cf.dwMask |= CFM_COLOR;
2495 cf.crTextColor = wxColourToRGB(style.GetTextColour());
2496 }
2497
2498 #if wxUSE_RICHEDIT2
2499 if ( m_verRichEdit != 1 && style.HasBackgroundColour() )
2500 {
2501 cf.dwMask |= CFM_BACKCOLOR;
2502 cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
2503 }
2504 #endif // wxUSE_RICHEDIT2
2505
2506 // do format the selection
2507 bool ok = ::SendMessage(GetHwnd(), EM_SETCHARFORMAT,
2508 SCF_SELECTION, (LPARAM)&cf) != 0;
2509 if ( !ok )
2510 {
2511 wxLogDebug(wxT("SendMessage(EM_SETCHARFORMAT, SCF_SELECTION) failed"));
2512 }
2513
2514 // now do the paragraph formatting
2515 PARAFORMAT2 pf;
2516 wxZeroMemory(pf);
2517 // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2518 // PARAFORMAT in that case
2519 #if wxUSE_RICHEDIT2
2520 if ( m_verRichEdit == 1 )
2521 {
2522 // this is the only thing the control is going to grok
2523 pf.cbSize = sizeof(PARAFORMAT);
2524 }
2525 else
2526 #endif
2527 {
2528 // PARAFORMAT or PARAFORMAT2
2529 pf.cbSize = sizeof(pf);
2530 }
2531
2532 if (style.HasAlignment())
2533 {
2534 pf.dwMask |= PFM_ALIGNMENT;
2535 if (style.GetAlignment() == wxTEXT_ALIGNMENT_RIGHT)
2536 pf.wAlignment = PFA_RIGHT;
2537 else if (style.GetAlignment() == wxTEXT_ALIGNMENT_CENTRE)
2538 pf.wAlignment = PFA_CENTER;
2539 else if (style.GetAlignment() == wxTEXT_ALIGNMENT_JUSTIFIED)
2540 pf.wAlignment = PFA_JUSTIFY;
2541 else
2542 pf.wAlignment = PFA_LEFT;
2543 }
2544
2545 if (style.HasLeftIndent())
2546 {
2547 pf.dwMask |= PFM_STARTINDENT | PFM_OFFSET;
2548
2549 // Convert from 1/10 mm to TWIPS
2550 pf.dxStartIndent = (int) (((double) style.GetLeftIndent()) * mm2twips / 10.0) ;
2551 pf.dxOffset = (int) (((double) style.GetLeftSubIndent()) * mm2twips / 10.0) ;
2552 }
2553
2554 if (style.HasRightIndent())
2555 {
2556 pf.dwMask |= PFM_RIGHTINDENT;
2557
2558 // Convert from 1/10 mm to TWIPS
2559 pf.dxRightIndent = (int) (((double) style.GetRightIndent()) * mm2twips / 10.0) ;
2560 }
2561
2562 if (style.HasTabs())
2563 {
2564 pf.dwMask |= PFM_TABSTOPS;
2565
2566 const wxArrayInt& tabs = style.GetTabs();
2567
2568 pf.cTabCount = (SHORT)wxMin(tabs.GetCount(), MAX_TAB_STOPS);
2569 size_t i;
2570 for (i = 0; i < (size_t) pf.cTabCount; i++)
2571 {
2572 // Convert from 1/10 mm to TWIPS
2573 pf.rgxTabs[i] = (int) (((double) tabs[i]) * mm2twips / 10.0) ;
2574 }
2575 }
2576
2577 #if wxUSE_RICHEDIT2
2578 if ( m_verRichEdit > 1 )
2579 {
2580 if ( wxTheApp->GetLayoutDirection() == wxLayout_RightToLeft )
2581 {
2582 // Use RTL paragraphs in RTL mode to get proper layout
2583 pf.dwMask |= PFM_RTLPARA;
2584 pf.wEffects |= PFE_RTLPARA;
2585 }
2586 }
2587 #endif // wxUSE_RICHEDIT2
2588
2589 if ( pf.dwMask )
2590 {
2591 // do format the selection
2592 bool ok = ::SendMessage(GetHwnd(), EM_SETPARAFORMAT,
2593 0, (LPARAM) &pf) != 0;
2594 if ( !ok )
2595 {
2596 wxLogDebug(wxT("SendMessage(EM_SETPARAFORMAT, 0) failed"));
2597 }
2598 }
2599
2600 if ( changeSel )
2601 {
2602 // restore the original selection
2603 DoSetSelection(startOld, endOld, SetSel_NoScroll);
2604 }
2605
2606 return ok;
2607 }
2608
2609 bool wxTextCtrl::SetDefaultStyle(const wxTextAttr& style)
2610 {
2611 if ( !wxTextCtrlBase::SetDefaultStyle(style) )
2612 return false;
2613
2614 if ( IsEditable() )
2615 {
2616 // we have to do this or the style wouldn't apply for the text typed by
2617 // the user
2618 wxTextPos posLast = GetLastPosition();
2619 SetStyle(posLast, posLast, m_defaultStyle);
2620 }
2621
2622 return true;
2623 }
2624
2625 bool wxTextCtrl::GetStyle(long position, wxTextAttr& style)
2626 {
2627 if ( !IsRich() )
2628 {
2629 // can't do it with normal text control
2630 return false;
2631 }
2632
2633 // initialize CHARFORMAT struct
2634 #if wxUSE_RICHEDIT2
2635 CHARFORMAT2 cf;
2636 #else
2637 CHARFORMAT cf;
2638 #endif
2639
2640 wxZeroMemory(cf);
2641
2642 // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2643 // CHARFORMAT in that case
2644 #if wxUSE_RICHEDIT2
2645 if ( m_verRichEdit == 1 )
2646 {
2647 // this is the only thing the control is going to grok
2648 cf.cbSize = sizeof(CHARFORMAT);
2649 }
2650 else
2651 #endif
2652 {
2653 // CHARFORMAT or CHARFORMAT2
2654 cf.cbSize = sizeof(cf);
2655 }
2656 // we can only change the format of the selection, so select the range we
2657 // want and restore the old selection later
2658 long startOld, endOld;
2659 GetSelection(&startOld, &endOld);
2660
2661 // but do we really have to change the selection?
2662 bool changeSel = position != startOld || position != endOld;
2663
2664 if ( changeSel )
2665 {
2666 DoSetSelection(position, position + 1, SetSel_NoScroll);
2667 }
2668
2669 // get the selection formatting
2670 (void) ::SendMessage(GetHwnd(), EM_GETCHARFORMAT,
2671 SCF_SELECTION, (LPARAM)&cf) ;
2672
2673
2674 LOGFONT lf;
2675 lf.lfHeight = cf.yHeight;
2676 lf.lfWidth = 0;
2677 lf.lfCharSet = ANSI_CHARSET; // FIXME: how to get correct charset?
2678 lf.lfClipPrecision = 0;
2679 lf.lfEscapement = 0;
2680 wxStrcpy(lf.lfFaceName, cf.szFaceName);
2681
2682 //NOTE: we _MUST_ set each of these values to _something_ since we
2683 //do not call wxZeroMemory on the LOGFONT lf
2684 if (cf.dwEffects & CFE_ITALIC)
2685 lf.lfItalic = TRUE;
2686 else
2687 lf.lfItalic = FALSE;
2688
2689 lf.lfOrientation = 0;
2690 lf.lfPitchAndFamily = cf.bPitchAndFamily;
2691 lf.lfQuality = 0;
2692
2693 if (cf.dwEffects & CFE_STRIKEOUT)
2694 lf.lfStrikeOut = TRUE;
2695 else
2696 lf.lfStrikeOut = FALSE;
2697
2698 if (cf.dwEffects & CFE_UNDERLINE)
2699 lf.lfUnderline = TRUE;
2700 else
2701 lf.lfUnderline = FALSE;
2702
2703 if (cf.dwEffects & CFE_BOLD)
2704 lf.lfWeight = FW_BOLD;
2705 else
2706 lf.lfWeight = FW_NORMAL;
2707
2708 wxFont font = wxCreateFontFromLogFont(& lf);
2709 if (font.Ok())
2710 {
2711 style.SetFont(font);
2712 }
2713 style.SetTextColour(wxColour(cf.crTextColor));
2714
2715 #if wxUSE_RICHEDIT2
2716 if ( m_verRichEdit != 1 )
2717 {
2718 // cf.dwMask |= CFM_BACKCOLOR;
2719 style.SetBackgroundColour(wxColour(cf.crBackColor));
2720 }
2721 #endif // wxUSE_RICHEDIT2
2722
2723 // now get the paragraph formatting
2724 PARAFORMAT2 pf;
2725 wxZeroMemory(pf);
2726 // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2727 // PARAFORMAT in that case
2728 #if wxUSE_RICHEDIT2
2729 if ( m_verRichEdit == 1 )
2730 {
2731 // this is the only thing the control is going to grok
2732 pf.cbSize = sizeof(PARAFORMAT);
2733 }
2734 else
2735 #endif
2736 {
2737 // PARAFORMAT or PARAFORMAT2
2738 pf.cbSize = sizeof(pf);
2739 }
2740
2741 // do format the selection
2742 (void) ::SendMessage(GetHwnd(), EM_GETPARAFORMAT, 0, (LPARAM) &pf) ;
2743
2744 style.SetLeftIndent( (int) ((double) pf.dxStartIndent * twips2mm * 10.0), (int) ((double) pf.dxOffset * twips2mm * 10.0) );
2745 style.SetRightIndent( (int) ((double) pf.dxRightIndent * twips2mm * 10.0) );
2746
2747 if (pf.wAlignment == PFA_CENTER)
2748 style.SetAlignment(wxTEXT_ALIGNMENT_CENTRE);
2749 else if (pf.wAlignment == PFA_RIGHT)
2750 style.SetAlignment(wxTEXT_ALIGNMENT_RIGHT);
2751 else if (pf.wAlignment == PFA_JUSTIFY)
2752 style.SetAlignment(wxTEXT_ALIGNMENT_JUSTIFIED);
2753 else
2754 style.SetAlignment(wxTEXT_ALIGNMENT_LEFT);
2755
2756 wxArrayInt tabStops;
2757 size_t i;
2758 for (i = 0; i < (size_t) pf.cTabCount; i++)
2759 {
2760 tabStops.Add( (int) ((double) (pf.rgxTabs[i] & 0xFFFF) * twips2mm * 10.0) );
2761 }
2762
2763 if ( changeSel )
2764 {
2765 // restore the original selection
2766 DoSetSelection(startOld, endOld, SetSel_NoScroll);
2767 }
2768
2769 return true;
2770 }
2771
2772 // ----------------------------------------------------------------------------
2773 // wxRichEditModule
2774 // ----------------------------------------------------------------------------
2775
2776 static const HINSTANCE INVALID_HINSTANCE = (HINSTANCE)-1;
2777
2778 bool wxRichEditModule::OnInit()
2779 {
2780 // don't do anything - we will load it when needed
2781 return true;
2782 }
2783
2784 void wxRichEditModule::OnExit()
2785 {
2786 for ( size_t i = 0; i < WXSIZEOF(ms_hRichEdit); i++ )
2787 {
2788 if ( ms_hRichEdit[i] && ms_hRichEdit[i] != INVALID_HINSTANCE )
2789 {
2790 ::FreeLibrary(ms_hRichEdit[i]);
2791 ms_hRichEdit[i] = NULL;
2792 }
2793 }
2794 #if wxUSE_INKEDIT
2795 if (ms_inkEditLib.IsLoaded())
2796 ms_inkEditLib.Unload();
2797 #endif
2798 }
2799
2800 /* static */
2801 bool wxRichEditModule::Load(Version version)
2802 {
2803 if ( ms_hRichEdit[version] == INVALID_HINSTANCE )
2804 {
2805 // we had already tried to load it and failed
2806 return false;
2807 }
2808
2809 if ( ms_hRichEdit[version] )
2810 {
2811 // we've already got this one
2812 return true;
2813 }
2814
2815 static const wxChar *const dllnames[] =
2816 {
2817 wxT("riched32"),
2818 wxT("riched20"),
2819 wxT("msftedit"),
2820 };
2821
2822 wxCOMPILE_TIME_ASSERT( WXSIZEOF(dllnames) == Version_Max,
2823 RichEditDllNamesVersionsMismatch );
2824
2825 ms_hRichEdit[version] = ::LoadLibrary(dllnames[version]);
2826
2827 if ( !ms_hRichEdit[version] )
2828 {
2829 ms_hRichEdit[version] = INVALID_HINSTANCE;
2830
2831 return false;
2832 }
2833
2834 return true;
2835 }
2836
2837 #if wxUSE_INKEDIT
2838 // load the InkEdit library
2839 bool wxRichEditModule::LoadInkEdit()
2840 {
2841 if (ms_inkEditLibLoadAttemped)
2842 return ms_inkEditLib.IsLoaded();
2843
2844 ms_inkEditLibLoadAttemped = true;
2845
2846 wxLogNull logNull;
2847 return ms_inkEditLib.Load(wxT("inked"));
2848 }
2849 #endif // wxUSE_INKEDIT
2850
2851
2852 #endif // wxUSE_RICHEDIT
2853
2854 #endif // wxUSE_TEXTCTRL && !(__SMARTPHONE__ && __WXWINCE__)
wxWidgets (Impactor)