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Add wxDataViewRendererBase::PrepareForItem() helper.
[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 m_verRichEdit = 4;
439 }
440 else if ( wxRichEditModule::Load(wxRichEditModule::Version_2or3) )
441 {
442 windowClass = wxT("RichEdit20")
443 #if wxUSE_UNICODE
444 wxT("W");
445 #else // ANSI
446 wxT("A");
447 #endif // Unicode/ANSI
448 }
449 else // failed to load msftedit.dll and riched20.dll
450 {
451 m_verRichEdit = 1;
452 }
453 }
454
455 if ( m_verRichEdit == 1 )
456 {
457 if ( wxRichEditModule::Load(wxRichEditModule::Version_1) )
458 {
459 windowClass = wxT("RICHEDIT");
460 }
461 else // failed to load any richedit control DLL
462 {
463 // only give the error msg once if the DLL can't be loaded
464 static bool s_errorGiven = false; // MT ok as only used by GUI
465
466 if ( !s_errorGiven )
467 {
468 wxLogError(_("Impossible to create a rich edit control, using simple text control instead. Please reinstall riched32.dll"));
469
470 s_errorGiven = true;
471 }
472
473 m_verRichEdit = 0;
474 }
475 }
476 } // !useInkEdit
477 }
478 #endif // wxUSE_RICHEDIT
479
480 // we need to turn '\n's into "\r\n"s for the multiline controls
481 wxString valueWin;
482 if ( m_windowStyle & wxTE_MULTILINE )
483 {
484 valueWin = wxTextFile::Translate(value, wxTextFileType_Dos);
485 }
486 else // single line
487 {
488 valueWin = value;
489 }
490
491 // suppress events sent during control creation: we're called either from
492 // the ctor and then we shouldn't generate any events for compatibility
493 // with the other ports, or from SetWindowStyleFlag() and then we shouldn't
494 // generate the events because our text doesn't really change, the fact
495 // that we (sometimes) need to recreate the control is just an
496 // implementation detail
497 m_updatesCount = -2;
498
499 if ( !MSWCreateControl(windowClass.wx_str(), msStyle, pos, size, valueWin) )
500 return false;
501
502 m_updatesCount = -1;
503
504 #if wxUSE_RICHEDIT
505 if (IsRich())
506 {
507 #if wxUSE_INKEDIT
508 if (IsInkEdit())
509 {
510 // Pass IEM_InsertText (0) as wParam, in order to have the ink always
511 // converted to text.
512 ::SendMessage(GetHwnd(), EM_SETINKINSERTMODE, 0, 0);
513
514 // Make sure the mouse can be used for input
515 ::SendMessage(GetHwnd(), EM_SETUSEMOUSEFORINPUT, 1, 0);
516 }
517 #endif
518
519 // enable the events we're interested in: we want to get EN_CHANGE as
520 // for the normal controls
521 LPARAM mask = ENM_CHANGE;
522
523 if (GetRichVersion() == 1 && !IsInkEdit())
524 {
525 // we also need EN_MSGFILTER for richedit 1.0 for the reasons
526 // explained in its handler
527 mask |= ENM_MOUSEEVENTS;
528
529 // we also need to force the appearance of the vertical scrollbar
530 // initially as otherwise the control doesn't refresh correctly
531 // after resize: but once the vertical scrollbar had been shown
532 // (even if it's subsequently hidden) it does
533 //
534 // this is clearly a bug and for now it has been only noticed under
535 // Windows XP, so if we're sure it works correctly under other
536 // systems we could do this only for XP
537 SetSize(-1, 1); // 1 is small enough to force vert scrollbar
538 SetInitialSize(size);
539 }
540 else if ( m_windowStyle & wxTE_AUTO_URL )
541 {
542 mask |= ENM_LINK;
543
544 ::SendMessage(GetHwnd(), EM_AUTOURLDETECT, TRUE, 0);
545 }
546
547 ::SendMessage(GetHwnd(), EM_SETEVENTMASK, 0, mask);
548 }
549 else
550 #endif // wxUSE_RICHEDIT
551 if ( HasFlag(wxTE_MULTILINE) && HasFlag(wxTE_READONLY) )
552 {
553 // non-rich read-only multiline controls have grey background by
554 // default under MSW but this is not always appropriate, so forcefully
555 // reset the background colour to normal default
556 //
557 // this is not ideal but, after a long discussion on wx-dev (see
558 // http://thread.gmane.org/gmane.comp.lib.wxwidgets.devel/116360/) it
559 // was finally deemed to be the best behaviour by default (and ideally
560 // we'd have a way to change this, see #11521)
561 SetBackgroundColour(GetClassDefaultAttributes().colBg);
562 }
563
564 #ifndef __WXWINCE__
565 // Without this, if we pass the size in the constructor and then don't change it,
566 // the themed borders will be drawn incorrectly.
567 SetWindowPos(GetHwnd(), NULL, 0, 0, 0, 0,
568 SWP_NOZORDER|SWP_NOMOVE|SWP_NOSIZE|SWP_NOACTIVATE|
569 SWP_FRAMECHANGED);
570 #endif
571
572 return true;
573 }
574
575 // Make sure the window style (etc.) reflects the HWND style (roughly)
576 void wxTextCtrl::AdoptAttributesFromHWND()
577 {
578 wxWindow::AdoptAttributesFromHWND();
579
580 HWND hWnd = GetHwnd();
581 long style = ::GetWindowLong(hWnd, GWL_STYLE);
582
583 // retrieve the style to see whether this is an edit or richedit ctrl
584 #if wxUSE_RICHEDIT
585 wxString classname = wxGetWindowClass(GetHWND());
586
587 if ( classname.IsSameAs(wxT("EDIT"), false /* no case */) )
588 {
589 m_verRichEdit = 0;
590 }
591 else // rich edit?
592 {
593 wxChar c;
594 if ( wxSscanf(classname, wxT("RichEdit%d0%c"), &m_verRichEdit, &c) != 2 )
595 {
596 wxLogDebug(wxT("Unknown edit control '%s'."), classname.c_str());
597
598 m_verRichEdit = 0;
599 }
600 }
601 #endif // wxUSE_RICHEDIT
602
603 if (style & ES_MULTILINE)
604 m_windowStyle |= wxTE_MULTILINE;
605 if (style & ES_PASSWORD)
606 m_windowStyle |= wxTE_PASSWORD;
607 if (style & ES_READONLY)
608 m_windowStyle |= wxTE_READONLY;
609 if (style & ES_WANTRETURN)
610 m_windowStyle |= wxTE_PROCESS_ENTER;
611 if (style & ES_CENTER)
612 m_windowStyle |= wxTE_CENTRE;
613 if (style & ES_RIGHT)
614 m_windowStyle |= wxTE_RIGHT;
615 }
616
617 WXDWORD wxTextCtrl::MSWGetStyle(long style, WXDWORD *exstyle) const
618 {
619 long msStyle = wxControl::MSWGetStyle(style, exstyle);
620
621 // styles which we always add by default
622 if ( style & wxTE_MULTILINE )
623 {
624 msStyle |= ES_MULTILINE | ES_WANTRETURN;
625 if ( !(style & wxTE_NO_VSCROLL) )
626 {
627 // always adjust the vertical scrollbar automatically if we have it
628 msStyle |= WS_VSCROLL | ES_AUTOVSCROLL;
629
630 #if wxUSE_RICHEDIT
631 // we have to use this style for the rich edit controls because
632 // without it the vertical scrollbar never appears at all in
633 // richedit 3.0 because of our ECO_NOHIDESEL hack (search for it)
634 if ( style & wxTE_RICH2 )
635 {
636 msStyle |= ES_DISABLENOSCROLL;
637 }
638 #endif // wxUSE_RICHEDIT
639 }
640
641 style |= wxTE_PROCESS_ENTER;
642 }
643 else // !multiline
644 {
645 // there is really no reason to not have this style for single line
646 // text controls
647 msStyle |= ES_AUTOHSCROLL;
648 }
649
650 // note that wxTE_DONTWRAP is the same as wxHSCROLL so if we have a horz
651 // scrollbar, there is no wrapping -- which makes sense
652 if ( style & wxTE_DONTWRAP )
653 {
654 // automatically scroll the control horizontally as necessary
655 //
656 // NB: ES_AUTOHSCROLL is needed for richedit controls or they don't
657 // show horz scrollbar at all, even in spite of WS_HSCROLL, and as
658 // it doesn't seem to do any harm for plain edit controls, add it
659 // always
660 msStyle |= WS_HSCROLL | ES_AUTOHSCROLL;
661 }
662
663 if ( style & wxTE_READONLY )
664 msStyle |= ES_READONLY;
665
666 if ( style & wxTE_PASSWORD )
667 msStyle |= ES_PASSWORD;
668
669 if ( style & wxTE_NOHIDESEL )
670 msStyle |= ES_NOHIDESEL;
671
672 // note that we can't do do "& wxTE_LEFT" as wxTE_LEFT == 0
673 if ( style & wxTE_CENTRE )
674 msStyle |= ES_CENTER;
675 else if ( style & wxTE_RIGHT )
676 msStyle |= ES_RIGHT;
677 else
678 msStyle |= ES_LEFT; // ES_LEFT is 0 as well but for consistency...
679
680 return msStyle;
681 }
682
683 void wxTextCtrl::SetWindowStyleFlag(long style)
684 {
685 // changing the alignment of the control dynamically works under Win2003
686 // (but not older Windows version: it seems to work under some versions of
687 // XP but not other ones, and we have no way to determine it so be
688 // conservative here) and only for plain EDIT controls (not RICH ones) and
689 // we have to recreate the control to make it always work
690 if ( IsRich() || wxGetWinVersion() < wxWinVersion_2003 )
691 {
692 const long alignMask = wxTE_LEFT | wxTE_CENTRE | wxTE_RIGHT;
693 if ( (style & alignMask) != (GetWindowStyle() & alignMask) )
694 {
695 const wxString value = GetValue();
696 const wxPoint pos = GetPosition();
697 const wxSize size = GetSize();
698
699 // delete the old window
700 HWND hwnd = GetHwnd();
701 DissociateHandle();
702 ::DestroyWindow(hwnd);
703
704 // create the new one with the updated flags
705 m_windowStyle = style;
706 MSWCreateText(value, pos, size);
707
708 // and make sure it has the same attributes as before
709 if ( m_hasFont )
710 {
711 // calling SetFont(m_font) would do nothing as the code would
712 // notice that the font didn't change, so force it to believe
713 // that it did
714 wxFont font = m_font;
715 m_font = wxNullFont;
716 SetFont(font);
717 }
718
719 if ( m_hasFgCol )
720 {
721 wxColour colFg = m_foregroundColour;
722 m_foregroundColour = wxNullColour;
723 SetForegroundColour(colFg);
724 }
725
726 if ( m_hasBgCol )
727 {
728 wxColour colBg = m_backgroundColour;
729 m_backgroundColour = wxNullColour;
730 SetBackgroundColour(colBg);
731 }
732
733 // note that text styles are lost but this is probably not a big
734 // problem: if you use styles, you probably don't use nor change
735 // alignment flags anyhow
736
737 return;
738 }
739 }
740
741 #if wxUSE_RICHEDIT
742 // we have to deal with some styles separately because they can't be
743 // changed by simply calling SetWindowLong(GWL_STYLE) but can be changed
744 // using richedit-specific EM_SETOPTIONS
745 if ( IsRich() &&
746 ((style & wxTE_NOHIDESEL) != (GetWindowStyle() & wxTE_NOHIDESEL)) )
747 {
748 bool set = (style & wxTE_NOHIDESEL) != 0;
749
750 ::SendMessage(GetHwnd(), EM_SETOPTIONS, set ? ECOOP_OR : ECOOP_AND,
751 set ? ECO_NOHIDESEL : ~ECO_NOHIDESEL);
752 }
753 #endif // wxUSE_RICHEDIT
754
755 wxControl::SetWindowStyleFlag(style);
756 }
757
758 // ----------------------------------------------------------------------------
759 // set/get the controls text
760 // ----------------------------------------------------------------------------
761
762 bool wxTextCtrl::IsEmpty() const
763 {
764 // this is an optimization for multiline controls containing a lot of text
765 if ( IsMultiLine() && GetNumberOfLines() != 1 )
766 return false;
767
768 return wxTextCtrlBase::IsEmpty();
769 }
770
771 wxString wxTextCtrl::GetValue() const
772 {
773 // range 0..-1 is special for GetRange() and means to retrieve all text
774 return GetRange(0, -1);
775 }
776
777 wxString wxTextCtrl::GetRange(long from, long to) const
778 {
779 wxString str;
780
781 if ( from >= to && to != -1 )
782 {
783 // nothing to retrieve
784 return str;
785 }
786
787 #if wxUSE_RICHEDIT
788 if ( IsRich() )
789 {
790 int len = GetWindowTextLength(GetHwnd());
791 if ( len > from )
792 {
793 if ( to == -1 )
794 to = len;
795
796 #if !wxUSE_UNICODE
797 // we must use EM_STREAMOUT if we don't want to lose all characters
798 // not representable in the current character set (EM_GETTEXTRANGE
799 // simply replaces them with question marks...)
800 if ( GetRichVersion() > 1 )
801 {
802 // we must have some encoding, otherwise any 8bit chars in the
803 // control are simply *lost* (replaced by '?')
804 wxFontEncoding encoding = wxFONTENCODING_SYSTEM;
805
806 wxFont font = m_defaultStyle.GetFont();
807 if ( !font.Ok() )
808 font = GetFont();
809
810 if ( font.Ok() )
811 {
812 encoding = font.GetEncoding();
813 }
814
815 #if wxUSE_INTL
816 if ( encoding == wxFONTENCODING_SYSTEM )
817 {
818 encoding = wxLocale::GetSystemEncoding();
819 }
820 #endif // wxUSE_INTL
821
822 if ( encoding == wxFONTENCODING_SYSTEM )
823 {
824 encoding = wxFONTENCODING_ISO8859_1;
825 }
826
827 str = StreamOut(encoding);
828
829 if ( !str.empty() )
830 {
831 // we have to manually extract the required part, luckily
832 // this is easy in this case as EOL characters in str are
833 // just LFs because we remove CRs in wxRichEditStreamOut
834 str = str.Mid(from, to - from);
835 }
836 }
837
838 // StreamOut() wasn't used or failed, try to do it in normal way
839 if ( str.empty() )
840 #endif // !wxUSE_UNICODE
841 {
842 // alloc one extra WORD as needed by the control
843 wxStringBuffer tmp(str, ++len);
844 wxChar *p = tmp;
845
846 TEXTRANGE textRange;
847 textRange.chrg.cpMin = from;
848 textRange.chrg.cpMax = to;
849 textRange.lpstrText = p;
850
851 (void)::SendMessage(GetHwnd(), EM_GETTEXTRANGE,
852 0, (LPARAM)&textRange);
853
854 if ( m_verRichEdit > 1 )
855 {
856 // RichEdit 2.0 uses just CR ('\r') for the
857 // newlines which is neither Unix nor Windows
858 // style - convert it to something reasonable
859 for ( ; *p; p++ )
860 {
861 if ( *p == wxT('\r') )
862 *p = wxT('\n');
863 }
864 }
865 }
866
867 if ( m_verRichEdit == 1 )
868 {
869 // convert to the canonical form - see comment below
870 str = wxTextFile::Translate(str, wxTextFileType_Unix);
871 }
872 }
873 //else: no text at all, leave the string empty
874 }
875 else
876 #endif // wxUSE_RICHEDIT
877 {
878 // retrieve all text: wxTextEntry method works even for multiline
879 // controls and must be used for single line ones to account for hints
880 str = wxTextEntry::GetValue();
881
882 // need only a range?
883 if ( from < to )
884 {
885 str = str.Mid(from, to - from);
886 }
887
888 // WM_GETTEXT uses standard DOS CR+LF (\r\n) convention - convert to the
889 // canonical one (same one as above) for consistency with the other kinds
890 // of controls and, more importantly, with the other ports
891 str = wxTextFile::Translate(str, wxTextFileType_Unix);
892 }
893
894 return str;
895 }
896
897 void wxTextCtrl::DoSetValue(const wxString& value, int flags)
898 {
899 // if the text is long enough, it's faster to just set it instead of first
900 // comparing it with the old one (chances are that it will be different
901 // anyhow, this comparison is there to avoid flicker for small single-line
902 // edit controls mostly)
903 if ( (value.length() > 0x400) || (value != DoGetValue()) )
904 {
905 DoWriteText(value, flags /* doesn't include SelectionOnly here */);
906
907 // mark the control as being not dirty - we changed its text, not the
908 // user
909 DiscardEdits();
910
911 // for compatibility, don't move the cursor when doing SetValue()
912 SetInsertionPoint(0);
913 }
914 else // same text
915 {
916 // still reset the modified flag even if the value didn't really change
917 // because now it comes from the program and not the user (and do it
918 // before generating the event so that the event handler could get the
919 // expected value from IsModified())
920 DiscardEdits();
921
922 // still send an event for consistency
923 if (flags & SetValue_SendEvent)
924 SendUpdateEvent();
925 }
926 }
927
928 #if wxUSE_RICHEDIT && (!wxUSE_UNICODE || wxUSE_UNICODE_MSLU)
929
930 // TODO: using memcpy() would improve performance a lot for big amounts of text
931
932 DWORD CALLBACK
933 wxRichEditStreamIn(DWORD_PTR dwCookie, BYTE *buf, LONG cb, LONG *pcb)
934 {
935 *pcb = 0;
936
937 const wchar_t ** const ppws = (const wchar_t **)dwCookie;
938
939 wchar_t *wbuf = (wchar_t *)buf;
940 const wchar_t *wpc = *ppws;
941 while ( cb && *wpc )
942 {
943 *wbuf++ = *wpc++;
944
945 cb -= sizeof(wchar_t);
946 (*pcb) += sizeof(wchar_t);
947 }
948
949 *ppws = wpc;
950
951 return 0;
952 }
953
954 // helper struct used to pass parameters from wxTextCtrl to wxRichEditStreamOut
955 struct wxStreamOutData
956 {
957 wchar_t *wpc;
958 size_t len;
959 };
960
961 DWORD CALLBACK
962 wxRichEditStreamOut(DWORD_PTR dwCookie, BYTE *buf, LONG cb, LONG *pcb)
963 {
964 *pcb = 0;
965
966 wxStreamOutData *data = (wxStreamOutData *)dwCookie;
967
968 const wchar_t *wbuf = (const wchar_t *)buf;
969 wchar_t *wpc = data->wpc;
970 while ( cb )
971 {
972 wchar_t wch = *wbuf++;
973
974 // turn "\r\n" into "\n" on the fly
975 if ( wch != L'\r' )
976 *wpc++ = wch;
977 else
978 data->len--;
979
980 cb -= sizeof(wchar_t);
981 (*pcb) += sizeof(wchar_t);
982 }
983
984 data->wpc = wpc;
985
986 return 0;
987 }
988
989
990 #if wxUSE_UNICODE_MSLU
991 #define UNUSED_IF_MSLU(param)
992 #else
993 #define UNUSED_IF_MSLU(param) param
994 #endif
995
996 bool
997 wxTextCtrl::StreamIn(const wxString& value,
998 wxFontEncoding UNUSED_IF_MSLU(encoding),
999 bool selectionOnly)
1000 {
1001 #if wxUSE_UNICODE_MSLU
1002 const wchar_t *wpc = value.c_str();
1003 #else // !wxUSE_UNICODE_MSLU
1004 wxCSConv conv(encoding);
1005
1006 const size_t len = conv.MB2WC(NULL, value.mb_str(), value.length());
1007
1008 if (len == wxCONV_FAILED)
1009 return false;
1010
1011 wxWCharBuffer wchBuf(len); // allocates one extra character
1012 wchar_t *wpc = wchBuf.data();
1013
1014 conv.MB2WC(wpc, value.mb_str(), len + 1);
1015 #endif // wxUSE_UNICODE_MSLU
1016
1017 // finally, stream it in the control
1018 EDITSTREAM eds;
1019 wxZeroMemory(eds);
1020 eds.dwCookie = (DWORD_PTR)&wpc;
1021 // the cast below is needed for broken (very) old mingw32 headers
1022 eds.pfnCallback = (EDITSTREAMCALLBACK)wxRichEditStreamIn;
1023
1024 // same problem as in DoWriteText(): we can get multiple events here
1025 UpdatesCountFilter ucf(m_updatesCount);
1026
1027 ::SendMessage(GetHwnd(), EM_STREAMIN,
1028 SF_TEXT |
1029 SF_UNICODE |
1030 (selectionOnly ? SFF_SELECTION : 0),
1031 (LPARAM)&eds);
1032
1033 // It's okay for EN_UPDATE to not be sent if the selection is empty and
1034 // the text is empty, otherwise warn the programmer about it.
1035 wxASSERT_MSG( ucf.GotUpdate() || ( !HasSelection() && value.empty() ),
1036 wxT("EM_STREAMIN didn't send EN_UPDATE?") );
1037
1038 if ( eds.dwError )
1039 {
1040 wxLogLastError(wxT("EM_STREAMIN"));
1041 }
1042
1043 return true;
1044 }
1045
1046 #if !wxUSE_UNICODE_MSLU
1047
1048 wxString
1049 wxTextCtrl::StreamOut(wxFontEncoding encoding, bool selectionOnly) const
1050 {
1051 wxString out;
1052
1053 const int len = GetWindowTextLength(GetHwnd());
1054
1055 wxWCharBuffer wchBuf(len);
1056 wchar_t *wpc = wchBuf.data();
1057
1058 wxStreamOutData data;
1059 data.wpc = wpc;
1060 data.len = len;
1061
1062 EDITSTREAM eds;
1063 wxZeroMemory(eds);
1064 eds.dwCookie = (DWORD)&data;
1065 eds.pfnCallback = wxRichEditStreamOut;
1066
1067 ::SendMessage
1068 (
1069 GetHwnd(),
1070 EM_STREAMOUT,
1071 SF_TEXT | SF_UNICODE | (selectionOnly ? SFF_SELECTION : 0),
1072 (LPARAM)&eds
1073 );
1074
1075 if ( eds.dwError )
1076 {
1077 wxLogLastError(wxT("EM_STREAMOUT"));
1078 }
1079 else // streamed out ok
1080 {
1081 // NUL-terminate the string because its length could have been
1082 // decreased by wxRichEditStreamOut
1083 *(wchBuf.data() + data.len) = L'\0';
1084
1085 // now convert to the given encoding (this is a possibly lossful
1086 // conversion but what else can we do)
1087 wxCSConv conv(encoding);
1088 size_t lenNeeded = conv.WC2MB(NULL, wchBuf, 0);
1089
1090 if ( lenNeeded != wxCONV_FAILED && lenNeeded++ )
1091 {
1092 conv.WC2MB(wxStringBuffer(out, lenNeeded), wchBuf, lenNeeded);
1093 }
1094 }
1095
1096 return out;
1097 }
1098
1099 #endif // !wxUSE_UNICODE_MSLU
1100
1101 #endif // wxUSE_RICHEDIT
1102
1103 void wxTextCtrl::WriteText(const wxString& value)
1104 {
1105 DoWriteText(value);
1106 }
1107
1108 void wxTextCtrl::DoWriteText(const wxString& value, int flags)
1109 {
1110 bool selectionOnly = (flags & SetValue_SelectionOnly) != 0;
1111 wxString valueDos;
1112 if ( m_windowStyle & wxTE_MULTILINE )
1113 valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
1114 else
1115 valueDos = value;
1116
1117 #if wxUSE_RICHEDIT
1118 // there are several complications with the rich edit controls here
1119 bool done = false;
1120 if ( IsRich() )
1121 {
1122 // first, ensure that the new text will be in the default style
1123 if ( !m_defaultStyle.IsDefault() )
1124 {
1125 long start, end;
1126 GetSelection(&start, &end);
1127 SetStyle(start, end, m_defaultStyle);
1128 }
1129
1130 #if wxUSE_UNICODE_MSLU
1131 // RichEdit doesn't have Unicode version of EM_REPLACESEL on Win9x,
1132 // but EM_STREAMIN works
1133 if ( wxUsingUnicowsDll() && GetRichVersion() > 1 )
1134 {
1135 done = StreamIn(valueDos, wxFONTENCODING_SYSTEM, selectionOnly);
1136 }
1137 #endif // wxUSE_UNICODE_MSLU
1138
1139 #if !wxUSE_UNICODE
1140 // next check if the text we're inserting must be shown in a non
1141 // default charset -- this only works for RichEdit > 1.0
1142 if ( GetRichVersion() > 1 )
1143 {
1144 wxFont font = m_defaultStyle.GetFont();
1145 if ( !font.Ok() )
1146 font = GetFont();
1147
1148 if ( font.Ok() )
1149 {
1150 wxFontEncoding encoding = font.GetEncoding();
1151 if ( encoding != wxFONTENCODING_SYSTEM )
1152 {
1153 // we have to use EM_STREAMIN to force richedit control 2.0+
1154 // to show any text in the non default charset -- otherwise
1155 // it thinks it knows better than we do and always shows it
1156 // in the default one
1157 done = StreamIn(valueDos, encoding, selectionOnly);
1158 }
1159 }
1160 }
1161 #endif // !wxUSE_UNICODE
1162 }
1163
1164 if ( !done )
1165 #endif // wxUSE_RICHEDIT
1166 {
1167 // in some cases we get 2 EN_CHANGE notifications after the SendMessage
1168 // call (this happens for plain EDITs with EM_REPLACESEL and under some
1169 // -- undetermined -- conditions with rich edit) and sometimes we don't
1170 // get any events at all (plain EDIT with WM_SETTEXT), so ensure that
1171 // we generate exactly one of them by ignoring all but the first one in
1172 // SendUpdateEvent() and generating one ourselves if we hadn't got any
1173 // notifications from Windows
1174 if ( !(flags & SetValue_SendEvent) )
1175 m_updatesCount = -2; // suppress any update event
1176
1177 UpdatesCountFilter ucf(m_updatesCount);
1178
1179 ::SendMessage(GetHwnd(), selectionOnly ? EM_REPLACESEL : WM_SETTEXT,
1180 // EM_REPLACESEL takes 1 to indicate the operation should be redoable
1181 selectionOnly ? 1 : 0, (LPARAM)valueDos.wx_str());
1182
1183 if ( !ucf.GotUpdate() && (flags & SetValue_SendEvent) )
1184 {
1185 SendUpdateEvent();
1186 }
1187 }
1188 }
1189
1190 void wxTextCtrl::AppendText(const wxString& text)
1191 {
1192 wxTextEntry::AppendText(text);
1193
1194 #if wxUSE_RICHEDIT
1195 // don't do this if we're frozen, saves some time
1196 if ( !IsFrozen() && IsMultiLine() && GetRichVersion() > 1 )
1197 {
1198 ::SendMessage(GetHwnd(), WM_VSCROLL, SB_BOTTOM, NULL);
1199 }
1200 #endif // wxUSE_RICHEDIT
1201 }
1202
1203 void wxTextCtrl::Clear()
1204 {
1205 ::SetWindowText(GetHwnd(), wxEmptyString);
1206
1207 if ( IsMultiLine() && !IsRich() )
1208 {
1209 // rich edit controls send EN_UPDATE from WM_SETTEXT handler themselves
1210 // but the normal ones don't -- make Clear() behaviour consistent by
1211 // always sending this event
1212 SendUpdateEvent();
1213 }
1214 }
1215
1216 #ifdef __WIN32__
1217
1218 bool wxTextCtrl::EmulateKeyPress(const wxKeyEvent& event)
1219 {
1220 SetFocus();
1221
1222 size_t lenOld = GetValue().length();
1223
1224 wxUint32 code = event.GetRawKeyCode();
1225 ::keybd_event((BYTE)code, 0, 0 /* key press */, 0);
1226 ::keybd_event((BYTE)code, 0, KEYEVENTF_KEYUP, 0);
1227
1228 // assume that any alphanumeric key changes the total number of characters
1229 // in the control - this should work in 99% of cases
1230 return GetValue().length() != lenOld;
1231 }
1232
1233 #endif // __WIN32__
1234
1235 // ----------------------------------------------------------------------------
1236 // Accessors
1237 // ----------------------------------------------------------------------------
1238
1239 void wxTextCtrl::SetInsertionPointEnd()
1240 {
1241 // we must not do anything if the caret is already there because calling
1242 // SetInsertionPoint() thaws the controls if Freeze() had been called even
1243 // if it doesn't actually move the caret anywhere and so the simple fact of
1244 // doing it results in horrible flicker when appending big amounts of text
1245 // to the control in a few chunks (see DoAddText() test in the text sample)
1246 const wxTextPos lastPosition = GetLastPosition();
1247 if ( GetInsertionPoint() == lastPosition )
1248 {
1249 return;
1250 }
1251
1252 SetInsertionPoint(lastPosition);
1253 }
1254
1255 long wxTextCtrl::GetInsertionPoint() const
1256 {
1257 #if wxUSE_RICHEDIT
1258 if ( IsRich() )
1259 {
1260 CHARRANGE range;
1261 range.cpMin = 0;
1262 range.cpMax = 0;
1263 ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
1264 return range.cpMin;
1265 }
1266 #endif // wxUSE_RICHEDIT
1267
1268 return wxTextEntry::GetInsertionPoint();
1269 }
1270
1271 wxTextPos wxTextCtrl::GetLastPosition() const
1272 {
1273 if ( IsMultiLine() )
1274 {
1275 int numLines = GetNumberOfLines();
1276 long posStartLastLine = XYToPosition(0, numLines - 1);
1277
1278 long lenLastLine = GetLengthOfLineContainingPos(posStartLastLine);
1279
1280 return posStartLastLine + lenLastLine;
1281 }
1282
1283 return wxTextEntry::GetLastPosition();
1284 }
1285
1286 // If the return values from and to are the same, there is no
1287 // selection.
1288 void wxTextCtrl::GetSelection(long *from, long *to) const
1289 {
1290 #if wxUSE_RICHEDIT
1291 if ( IsRich() )
1292 {
1293 CHARRANGE charRange;
1294 ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &charRange);
1295
1296 *from = charRange.cpMin;
1297 *to = charRange.cpMax;
1298 }
1299 else
1300 #endif // !wxUSE_RICHEDIT
1301 {
1302 wxTextEntry::GetSelection(from, to);
1303 }
1304 }
1305
1306 // ----------------------------------------------------------------------------
1307 // selection
1308 // ----------------------------------------------------------------------------
1309
1310 void wxTextCtrl::DoSetSelection(long from, long to, int flags)
1311 {
1312 HWND hWnd = GetHwnd();
1313
1314 #if wxUSE_RICHEDIT
1315 if ( IsRich() )
1316 {
1317 // if from and to are both -1, it means (in wxWidgets) that all text
1318 // should be selected, translate this into Windows convention
1319 if ( (from == -1) && (to == -1) )
1320 {
1321 from = 0;
1322 }
1323
1324 CHARRANGE range;
1325 range.cpMin = from;
1326 range.cpMax = to;
1327 ::SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM)&range);
1328 }
1329 else
1330 #endif // wxUSE_RICHEDIT
1331 {
1332 wxTextEntry::DoSetSelection(from, to, flags);
1333 }
1334
1335 if ( (flags & SetSel_Scroll) && !IsFrozen() )
1336 {
1337 #if wxUSE_RICHEDIT
1338 // richedit 3.0 (i.e. the version living in riched20.dll distributed
1339 // with Windows 2000 and beyond) doesn't honour EM_SCROLLCARET when
1340 // emulating richedit 2.0 unless the control has focus or ECO_NOHIDESEL
1341 // option is set (but it does work ok in richedit 1.0 mode...)
1342 //
1343 // so to make it work we either need to give focus to it here which
1344 // will probably create many problems (dummy focus events; window
1345 // containing the text control being brought to foreground
1346 // unexpectedly; ...) or to temporarily set ECO_NOHIDESEL which may
1347 // create other problems too -- and in fact it does because if we turn
1348 // on/off this style while appending the text to the control, the
1349 // vertical scrollbar never appears in it even if we append tons of
1350 // text and to work around this the only solution I found was to use
1351 // ES_DISABLENOSCROLL
1352 //
1353 // this is very ugly but I don't see any other way to make this work
1354 long style = 0;
1355 if ( GetRichVersion() > 1 )
1356 {
1357 if ( !HasFlag(wxTE_NOHIDESEL) )
1358 {
1359 // setting ECO_NOHIDESEL also sets WS_VISIBLE and possibly
1360 // others, remember the style so we can reset it later if needed
1361 style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1362 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1363 ECOOP_OR, ECO_NOHIDESEL);
1364 }
1365 //else: everything is already ok
1366 }
1367 #endif // wxUSE_RICHEDIT
1368
1369 ::SendMessage(hWnd, EM_SCROLLCARET, 0, (LPARAM)0);
1370
1371 #if wxUSE_RICHEDIT
1372 // restore ECO_NOHIDESEL if we changed it
1373 if ( GetRichVersion() > 1 && !HasFlag(wxTE_NOHIDESEL) )
1374 {
1375 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1376 ECOOP_AND, ~ECO_NOHIDESEL);
1377 if ( style != ::GetWindowLong(GetHwnd(), GWL_STYLE) )
1378 ::SetWindowLong(GetHwnd(), GWL_STYLE, style);
1379 }
1380 #endif // wxUSE_RICHEDIT
1381 }
1382 }
1383
1384 // ----------------------------------------------------------------------------
1385 // Working with files
1386 // ----------------------------------------------------------------------------
1387
1388 bool wxTextCtrl::DoLoadFile(const wxString& file, int fileType)
1389 {
1390 if ( wxTextCtrlBase::DoLoadFile(file, fileType) )
1391 {
1392 // update the size limit if needed
1393 AdjustSpaceLimit();
1394
1395 return true;
1396 }
1397
1398 return false;
1399 }
1400
1401 // ----------------------------------------------------------------------------
1402 // dirty status
1403 // ----------------------------------------------------------------------------
1404
1405 bool wxTextCtrl::IsModified() const
1406 {
1407 return ::SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0;
1408 }
1409
1410 void wxTextCtrl::MarkDirty()
1411 {
1412 ::SendMessage(GetHwnd(), EM_SETMODIFY, TRUE, 0);
1413 }
1414
1415 void wxTextCtrl::DiscardEdits()
1416 {
1417 ::SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0);
1418 }
1419
1420 // ----------------------------------------------------------------------------
1421 // Positions <-> coords
1422 // ----------------------------------------------------------------------------
1423
1424 int wxTextCtrl::GetNumberOfLines() const
1425 {
1426 return (int)::SendMessage(GetHwnd(), EM_GETLINECOUNT, 0, 0);
1427 }
1428
1429 long wxTextCtrl::XYToPosition(long x, long y) const
1430 {
1431 // This gets the char index for the _beginning_ of this line
1432 long charIndex = ::SendMessage(GetHwnd(), EM_LINEINDEX, y, 0);
1433
1434 return charIndex + x;
1435 }
1436
1437 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
1438 {
1439 HWND hWnd = GetHwnd();
1440
1441 // This gets the line number containing the character
1442 long lineNo;
1443 #if wxUSE_RICHEDIT
1444 if ( IsRich() )
1445 {
1446 lineNo = ::SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, pos);
1447 }
1448 else
1449 #endif // wxUSE_RICHEDIT
1450 {
1451 lineNo = ::SendMessage(hWnd, EM_LINEFROMCHAR, pos, 0);
1452 }
1453
1454 if ( lineNo == -1 )
1455 {
1456 // no such line
1457 return false;
1458 }
1459
1460 // This gets the char index for the _beginning_ of this line
1461 long charIndex = ::SendMessage(hWnd, EM_LINEINDEX, lineNo, 0);
1462 if ( charIndex == -1 )
1463 {
1464 return false;
1465 }
1466
1467 // The X position must therefore be the different between pos and charIndex
1468 if ( x )
1469 *x = pos - charIndex;
1470 if ( y )
1471 *y = lineNo;
1472
1473 return true;
1474 }
1475
1476 wxTextCtrlHitTestResult
1477 wxTextCtrl::HitTest(const wxPoint& pt, long *posOut) const
1478 {
1479 // first get the position from Windows
1480 LPARAM lParam;
1481
1482 #if wxUSE_RICHEDIT
1483 POINTL ptl;
1484 if ( IsRich() )
1485 {
1486 // for rich edit controls the position is passed iva the struct fields
1487 ptl.x = pt.x;
1488 ptl.y = pt.y;
1489 lParam = (LPARAM)&ptl;
1490 }
1491 else
1492 #endif // wxUSE_RICHEDIT
1493 {
1494 // for the plain ones, we are limited to 16 bit positions which are
1495 // combined in a single 32 bit value
1496 lParam = MAKELPARAM(pt.x, pt.y);
1497 }
1498
1499 LRESULT pos = ::SendMessage(GetHwnd(), EM_CHARFROMPOS, 0, lParam);
1500
1501 if ( pos == -1 )
1502 {
1503 // this seems to indicate an error...
1504 return wxTE_HT_UNKNOWN;
1505 }
1506
1507 #if wxUSE_RICHEDIT
1508 if ( !IsRich() )
1509 #endif // wxUSE_RICHEDIT
1510 {
1511 // for plain EDIT controls the higher word contains something else
1512 pos = LOWORD(pos);
1513 }
1514
1515
1516 // next determine where it is relatively to our point: EM_CHARFROMPOS
1517 // always returns the closest character but we need to be more precise, so
1518 // double check that we really are where it pretends
1519 POINTL ptReal;
1520
1521 #if wxUSE_RICHEDIT
1522 // FIXME: we need to distinguish between richedit 2 and 3 here somehow but
1523 // we don't know how to do it
1524 if ( IsRich() )
1525 {
1526 ::SendMessage(GetHwnd(), EM_POSFROMCHAR, (WPARAM)&ptReal, pos);
1527 }
1528 else
1529 #endif // wxUSE_RICHEDIT
1530 {
1531 LRESULT lRc = ::SendMessage(GetHwnd(), EM_POSFROMCHAR, pos, 0);
1532
1533 if ( lRc == -1 )
1534 {
1535 // this is apparently returned when pos corresponds to the last
1536 // position
1537 ptReal.x =
1538 ptReal.y = 0;
1539 }
1540 else
1541 {
1542 ptReal.x = LOWORD(lRc);
1543 ptReal.y = HIWORD(lRc);
1544 }
1545 }
1546
1547 wxTextCtrlHitTestResult rc;
1548
1549 if ( pt.y > ptReal.y + GetCharHeight() )
1550 rc = wxTE_HT_BELOW;
1551 else if ( pt.x > ptReal.x + GetCharWidth() )
1552 rc = wxTE_HT_BEYOND;
1553 else
1554 rc = wxTE_HT_ON_TEXT;
1555
1556 if ( posOut )
1557 *posOut = pos;
1558
1559 return rc;
1560 }
1561
1562 // ----------------------------------------------------------------------------
1563 //
1564 // ----------------------------------------------------------------------------
1565
1566 void wxTextCtrl::ShowPosition(long pos)
1567 {
1568 HWND hWnd = GetHwnd();
1569
1570 // To scroll to a position, we pass the number of lines and characters
1571 // to scroll *by*. This means that we need to:
1572 // (1) Find the line position of the current line.
1573 // (2) Find the line position of pos.
1574 // (3) Scroll by (pos - current).
1575 // For now, ignore the horizontal scrolling.
1576
1577 // Is this where scrolling is relative to - the line containing the caret?
1578 // Or is the first visible line??? Try first visible line.
1579 // int currentLineLineNo1 = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, -1, 0L);
1580
1581 int currentLineLineNo = (int)::SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, 0, 0);
1582
1583 int specifiedLineLineNo = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, pos, 0);
1584
1585 int linesToScroll = specifiedLineLineNo - currentLineLineNo;
1586
1587 if (linesToScroll != 0)
1588 ::SendMessage(hWnd, EM_LINESCROLL, 0, linesToScroll);
1589 }
1590
1591 long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const
1592 {
1593 return ::SendMessage(GetHwnd(), EM_LINELENGTH, pos, 0);
1594 }
1595
1596 int wxTextCtrl::GetLineLength(long lineNo) const
1597 {
1598 long pos = XYToPosition(0, lineNo);
1599
1600 return GetLengthOfLineContainingPos(pos);
1601 }
1602
1603 wxString wxTextCtrl::GetLineText(long lineNo) const
1604 {
1605 size_t len = (size_t)GetLineLength(lineNo) + 1;
1606
1607 // there must be at least enough place for the length WORD in the
1608 // buffer
1609 len += sizeof(WORD);
1610
1611 wxString str;
1612 {
1613 wxStringBufferLength tmp(str, len);
1614 wxChar *buf = tmp;
1615
1616 *(WORD *)buf = (WORD)len;
1617 len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf);
1618
1619 #if wxUSE_RICHEDIT
1620 if ( IsRich() )
1621 {
1622 // remove the '\r' returned by the rich edit control, the user code
1623 // should never see it
1624 if ( buf[len - 2] == wxT('\r') && buf[len - 1] == wxT('\n') )
1625 {
1626 // richedit 1.0 uses "\r\n" as line terminator, so remove "\r"
1627 // here and "\n" below
1628 buf[len - 2] = wxT('\n');
1629 len--;
1630 }
1631 else if ( buf[len - 1] == wxT('\r') )
1632 {
1633 // richedit 2.0+ uses only "\r", replace it with "\n"
1634 buf[len - 1] = wxT('\n');
1635 }
1636 }
1637 #endif // wxUSE_RICHEDIT
1638
1639 // remove the '\n' at the end, if any (this is how this function is
1640 // supposed to work according to the docs)
1641 if ( buf[len - 1] == wxT('\n') )
1642 {
1643 len--;
1644 }
1645
1646 buf[len] = 0;
1647 tmp.SetLength(len);
1648 }
1649
1650 return str;
1651 }
1652
1653 void wxTextCtrl::SetMaxLength(unsigned long len)
1654 {
1655 #if wxUSE_RICHEDIT
1656 if ( IsRich() )
1657 {
1658 ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, len ? len : 0x7fffffff);
1659 }
1660 else
1661 #endif // wxUSE_RICHEDIT
1662 {
1663 wxTextEntry::SetMaxLength(len);
1664 }
1665 }
1666
1667 // ----------------------------------------------------------------------------
1668 // Undo/redo
1669 // ----------------------------------------------------------------------------
1670
1671 void wxTextCtrl::Redo()
1672 {
1673 #if wxUSE_RICHEDIT
1674 if ( GetRichVersion() > 1 )
1675 {
1676 ::SendMessage(GetHwnd(), EM_REDO, 0, 0);
1677 return;
1678 }
1679 #endif // wxUSE_RICHEDIT
1680
1681 wxTextEntry::Redo();
1682 }
1683
1684 bool wxTextCtrl::CanRedo() const
1685 {
1686 #if wxUSE_RICHEDIT
1687 if ( GetRichVersion() > 1 )
1688 return ::SendMessage(GetHwnd(), EM_CANREDO, 0, 0) != 0;
1689 #endif // wxUSE_RICHEDIT
1690
1691 return wxTextEntry::CanRedo();
1692 }
1693
1694 // ----------------------------------------------------------------------------
1695 // caret handling (Windows only)
1696 // ----------------------------------------------------------------------------
1697
1698 bool wxTextCtrl::ShowNativeCaret(bool show)
1699 {
1700 if ( show != m_isNativeCaretShown )
1701 {
1702 if ( !(show ? ::ShowCaret(GetHwnd()) : ::HideCaret(GetHwnd())) )
1703 {
1704 // not an error, may simply indicate that it's not shown/hidden
1705 // yet (i.e. it had been hidden/shown 2 times before)
1706 return false;
1707 }
1708
1709 m_isNativeCaretShown = show;
1710 }
1711
1712 return true;
1713 }
1714
1715 // ----------------------------------------------------------------------------
1716 // implementation details
1717 // ----------------------------------------------------------------------------
1718
1719 void wxTextCtrl::Command(wxCommandEvent & event)
1720 {
1721 SetValue(event.GetString());
1722 ProcessCommand (event);
1723 }
1724
1725 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
1726 {
1727 // By default, load the first file into the text window.
1728 if (event.GetNumberOfFiles() > 0)
1729 {
1730 LoadFile(event.GetFiles()[0]);
1731 }
1732 }
1733
1734 // ----------------------------------------------------------------------------
1735 // kbd input processing
1736 // ----------------------------------------------------------------------------
1737
1738 bool wxTextCtrl::MSWShouldPreProcessMessage(WXMSG* msg)
1739 {
1740 // check for our special keys here: if we don't do it and the parent frame
1741 // uses them as accelerators, they wouldn't work at all, so we disable
1742 // usual preprocessing for them
1743 if ( msg->message == WM_KEYDOWN )
1744 {
1745 const WPARAM vkey = msg->wParam;
1746 if ( HIWORD(msg->lParam) & KF_ALTDOWN )
1747 {
1748 // Alt-Backspace is accelerator for "Undo"
1749 if ( vkey == VK_BACK )
1750 return false;
1751 }
1752 else // no Alt
1753 {
1754 // we want to process some Ctrl-foo and Shift-bar but no key
1755 // combinations without either Ctrl or Shift nor with both of them
1756 // pressed
1757 const int ctrl = wxIsCtrlDown(),
1758 shift = wxIsShiftDown();
1759 switch ( ctrl + shift )
1760 {
1761 default:
1762 wxFAIL_MSG( wxT("how many modifiers have we got?") );
1763 // fall through
1764
1765 case 0:
1766 if ( IsMultiLine() && vkey == VK_RETURN )
1767 return false;
1768 // fall through
1769 case 2:
1770 break;
1771
1772 case 1:
1773 // either Ctrl or Shift pressed
1774 if ( ctrl )
1775 {
1776 switch ( vkey )
1777 {
1778 case 'C':
1779 case 'V':
1780 case 'X':
1781 case VK_INSERT:
1782 case VK_DELETE:
1783 case VK_HOME:
1784 case VK_END:
1785 return false;
1786 }
1787 }
1788 else // Shift is pressed
1789 {
1790 if ( vkey == VK_INSERT || vkey == VK_DELETE )
1791 return false;
1792 }
1793 }
1794 }
1795 }
1796
1797 return wxControl::MSWShouldPreProcessMessage(msg);
1798 }
1799
1800 void wxTextCtrl::OnChar(wxKeyEvent& event)
1801 {
1802 switch ( event.GetKeyCode() )
1803 {
1804 case WXK_RETURN:
1805 {
1806 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1807 InitCommandEvent(event);
1808 event.SetString(GetValue());
1809 if ( HandleWindowEvent(event) )
1810 if ( !HasFlag(wxTE_MULTILINE) )
1811 return;
1812 //else: multiline controls need Enter for themselves
1813 }
1814 break;
1815
1816 case WXK_TAB:
1817 // ok, so this is getting absolutely ridiculous but I don't see
1818 // any other way to fix this bug: when a multiline text control is
1819 // inside a wxFrame, we need to generate the navigation event as
1820 // otherwise nothing happens at all, but when the same control is
1821 // created inside a dialog, IsDialogMessage() *does* switch focus
1822 // all by itself and so if we do it here as well, it is advanced
1823 // twice and goes to the next control... to prevent this from
1824 // happening we're doing this ugly check, the logic being that if
1825 // we don't have focus then it had been already changed to the next
1826 // control
1827 //
1828 // the right thing to do would, of course, be to understand what
1829 // the hell is IsDialogMessage() doing but this is beyond my feeble
1830 // forces at the moment unfortunately
1831 if ( !(m_windowStyle & wxTE_PROCESS_TAB))
1832 {
1833 if ( FindFocus() == this )
1834 {
1835 int flags = 0;
1836 if (!event.ShiftDown())
1837 flags |= wxNavigationKeyEvent::IsForward ;
1838 if (event.ControlDown())
1839 flags |= wxNavigationKeyEvent::WinChange ;
1840 if (Navigate(flags))
1841 return;
1842 }
1843 }
1844 else
1845 {
1846 // Insert tab since calling the default Windows handler
1847 // doesn't seem to do it
1848 WriteText(wxT("\t"));
1849 return;
1850 }
1851 break;
1852 }
1853
1854 // no, we didn't process it
1855 event.Skip();
1856 }
1857
1858 void wxTextCtrl::OnKeyDown(wxKeyEvent& event)
1859 {
1860 // richedit control doesn't send WM_PASTE, WM_CUT and WM_COPY messages
1861 // when Ctrl-V, X or C is pressed and this prevents wxClipboardTextEvent
1862 // from working. So we work around it by intercepting these shortcuts
1863 // ourselves and emitting clipboard events (which richedit will handle,
1864 // so everything works as before, including pasting of rich text):
1865 if ( event.GetModifiers() == wxMOD_CONTROL && IsRich() )
1866 {
1867 switch ( event.GetKeyCode() )
1868 {
1869 case 'C':
1870 Copy();
1871 return;
1872 case 'X':
1873 Cut();
1874 return;
1875 case 'V':
1876 Paste();
1877 return;
1878 default:
1879 break;
1880 }
1881 }
1882
1883 // no, we didn't process it
1884 event.Skip();
1885 }
1886
1887 WXLRESULT wxTextCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
1888 {
1889 WXLRESULT lRc = wxTextCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
1890
1891 switch ( nMsg )
1892 {
1893 case WM_GETDLGCODE:
1894 {
1895 // we always want the chars and the arrows: the arrows for
1896 // navigation and the chars because we want Ctrl-C to work even
1897 // in a read only control
1898 long lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
1899
1900 if ( IsEditable() )
1901 {
1902 // we may have several different cases:
1903 // 1. normal: both TAB and ENTER are used for navigation
1904 // 2. ctrl wants TAB for itself: ENTER is used to pass to
1905 // the next control in the dialog
1906 // 3. ctrl wants ENTER for itself: TAB is used for dialog
1907 // navigation
1908 // 4. ctrl wants both TAB and ENTER: Ctrl-ENTER is used to
1909 // go to the next control (we need some way to do it)
1910
1911 // multiline controls should always get ENTER for themselves
1912 if ( HasFlag(wxTE_PROCESS_ENTER) || HasFlag(wxTE_MULTILINE) )
1913 lDlgCode |= DLGC_WANTMESSAGE;
1914
1915 if ( HasFlag(wxTE_PROCESS_TAB) )
1916 lDlgCode |= DLGC_WANTTAB;
1917
1918 lRc |= lDlgCode;
1919 }
1920 else // !editable
1921 {
1922 // NB: use "=", not "|=" as the base class version returns
1923 // the same flags in the disabled state as usual (i.e.
1924 // including DLGC_WANTMESSAGE). This is strange (how
1925 // does it work in the native Win32 apps?) but for now
1926 // live with it.
1927 lRc = lDlgCode;
1928 }
1929 }
1930 break;
1931
1932 #if wxUSE_MENUS
1933 case WM_SETCURSOR:
1934 // rich text controls seem to have a bug and don't change the
1935 // cursor to the standard arrow one from the I-beam cursor usually
1936 // used by them even when a popup menu is shown (this works fine
1937 // for plain EDIT controls though), so explicitly work around this
1938 if ( IsRich() )
1939 {
1940 extern wxMenu *wxCurrentPopupMenu;
1941 if ( wxCurrentPopupMenu &&
1942 wxCurrentPopupMenu->GetInvokingWindow() == this )
1943 ::SetCursor(GetHcursorOf(*wxSTANDARD_CURSOR));
1944 }
1945 #endif // wxUSE_MENUS
1946 }
1947
1948 return lRc;
1949 }
1950
1951 // ----------------------------------------------------------------------------
1952 // text control event processing
1953 // ----------------------------------------------------------------------------
1954
1955 bool wxTextCtrl::SendUpdateEvent()
1956 {
1957 switch ( m_updatesCount )
1958 {
1959 case 0:
1960 // remember that we've got an update
1961 m_updatesCount++;
1962 break;
1963
1964 case 1:
1965 // we had already sent one event since the last control modification
1966 return false;
1967
1968 default:
1969 wxFAIL_MSG( wxT("unexpected wxTextCtrl::m_updatesCount value") );
1970 // fall through
1971
1972 case -1:
1973 // we hadn't updated the control ourselves, this event comes from
1974 // the user, don't need to ignore it nor update the count
1975 break;
1976
1977 case -2:
1978 // the control was updated programmatically and we do NOT want to
1979 // send events
1980 return false;
1981 }
1982
1983 return SendTextUpdatedEvent();
1984 }
1985
1986 bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
1987 {
1988 switch ( param )
1989 {
1990 case EN_CHANGE:
1991 SendUpdateEvent();
1992 break;
1993
1994 case EN_MAXTEXT:
1995 // the text size limit has been hit -- try to increase it
1996 if ( !AdjustSpaceLimit() )
1997 {
1998 wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, m_windowId);
1999 InitCommandEvent(event);
2000 event.SetString(GetValue());
2001 ProcessCommand(event);
2002 }
2003 break;
2004
2005 // the other edit notification messages are not processed (or, in
2006 // the case of EN_{SET/KILL}FOCUS were already handled at WM_SET/
2007 // KILLFOCUS level)
2008 default:
2009 return false;
2010 }
2011
2012 // processed
2013 return true;
2014 }
2015
2016 WXHBRUSH wxTextCtrl::MSWControlColor(WXHDC hDC, WXHWND hWnd)
2017 {
2018 if ( !IsEnabled() && !HasFlag(wxTE_MULTILINE) )
2019 return MSWControlColorDisabled(hDC);
2020
2021 return wxTextCtrlBase::MSWControlColor(hDC, hWnd);
2022 }
2023
2024 bool wxTextCtrl::HasSpaceLimit(unsigned int *len) const
2025 {
2026 // HACK: we try to automatically extend the limit for the amount of text
2027 // to allow (interactively) entering more than 64Kb of text under
2028 // Win9x but we shouldn't reset the text limit which was previously
2029 // set explicitly with SetMaxLength()
2030 //
2031 // Unfortunately there is no EM_GETLIMITTEXTSETBYUSER and so we don't
2032 // know the limit we set (if any). We could solve this by storing the
2033 // limit we set in wxTextCtrl but to save space we prefer to simply
2034 // test here the actual limit value: we consider that SetMaxLength()
2035 // can only be called for small values while EN_MAXTEXT is only sent
2036 // for large values (in practice the default limit seems to be 30000
2037 // but make it smaller just to be on the safe side)
2038 *len = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
2039 return *len < 10001;
2040
2041 }
2042
2043 bool wxTextCtrl::AdjustSpaceLimit()
2044 {
2045 unsigned int limit;
2046 if ( HasSpaceLimit(&limit) )
2047 return false;
2048
2049 unsigned int len = ::GetWindowTextLength(GetHwnd());
2050 if ( len >= limit )
2051 {
2052 // increment in 32Kb chunks
2053 SetMaxLength(len + 0x8000);
2054 }
2055
2056 // we changed the limit
2057 return true;
2058 }
2059
2060 bool wxTextCtrl::AcceptsFocusFromKeyboard() const
2061 {
2062 // we don't want focus if we can't be edited unless we're a multiline
2063 // control because then it might be still nice to get focus from keyboard
2064 // to be able to scroll it without mouse
2065 return (IsEditable() || IsMultiLine()) && wxControl::AcceptsFocus();
2066 }
2067
2068 wxSize wxTextCtrl::DoGetBestSize() const
2069 {
2070 int cx, cy;
2071 wxGetCharSize(GetHWND(), &cx, &cy, GetFont());
2072
2073 int wText = DEFAULT_ITEM_WIDTH;
2074
2075 int hText = cy;
2076 if ( m_windowStyle & wxTE_MULTILINE )
2077 {
2078 hText *= wxMax(wxMin(GetNumberOfLines(), 10), 2);
2079 }
2080 //else: for single line control everything is ok
2081
2082 // we have to add the adjustments for the control height only once, not
2083 // once per line, so do it after multiplication above
2084 hText += EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy) - cy;
2085
2086 return wxSize(wText, hText);
2087 }
2088
2089 // ----------------------------------------------------------------------------
2090 // standard handlers for standard edit menu events
2091 // ----------------------------------------------------------------------------
2092
2093 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
2094 {
2095 Cut();
2096 }
2097
2098 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
2099 {
2100 Copy();
2101 }
2102
2103 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
2104 {
2105 Paste();
2106 }
2107
2108 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
2109 {
2110 Undo();
2111 }
2112
2113 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
2114 {
2115 Redo();
2116 }
2117
2118 void wxTextCtrl::OnDelete(wxCommandEvent& WXUNUSED(event))
2119 {
2120 RemoveSelection();
2121 }
2122
2123 void wxTextCtrl::OnSelectAll(wxCommandEvent& WXUNUSED(event))
2124 {
2125 SelectAll();
2126 }
2127
2128 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
2129 {
2130 event.Enable( CanCut() );
2131 }
2132
2133 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
2134 {
2135 event.Enable( CanCopy() );
2136 }
2137
2138 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
2139 {
2140 event.Enable( CanPaste() );
2141 }
2142
2143 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
2144 {
2145 event.Enable( CanUndo() );
2146 }
2147
2148 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
2149 {
2150 event.Enable( CanRedo() );
2151 }
2152
2153 void wxTextCtrl::OnUpdateDelete(wxUpdateUIEvent& event)
2154 {
2155 event.Enable( HasSelection() && IsEditable() );
2156 }
2157
2158 void wxTextCtrl::OnUpdateSelectAll(wxUpdateUIEvent& event)
2159 {
2160 event.Enable( !IsEmpty() );
2161 }
2162
2163 void wxTextCtrl::OnContextMenu(wxContextMenuEvent& event)
2164 {
2165 #if wxUSE_RICHEDIT
2166 if (IsRich())
2167 {
2168 if (!m_privateContextMenu)
2169 {
2170 m_privateContextMenu = new wxMenu;
2171 m_privateContextMenu->Append(wxID_UNDO, _("&Undo"));
2172 m_privateContextMenu->Append(wxID_REDO, _("&Redo"));
2173 m_privateContextMenu->AppendSeparator();
2174 m_privateContextMenu->Append(wxID_CUT, _("Cu&t"));
2175 m_privateContextMenu->Append(wxID_COPY, _("&Copy"));
2176 m_privateContextMenu->Append(wxID_PASTE, _("&Paste"));
2177 m_privateContextMenu->Append(wxID_CLEAR, _("&Delete"));
2178 m_privateContextMenu->AppendSeparator();
2179 m_privateContextMenu->Append(wxID_SELECTALL, _("Select &All"));
2180 }
2181 PopupMenu(m_privateContextMenu);
2182 return;
2183 }
2184 else
2185 #endif
2186 event.Skip();
2187 }
2188
2189 void wxTextCtrl::OnSetFocus(wxFocusEvent& event)
2190 {
2191 // be sure the caret remains invisible if the user had hidden it
2192 if ( !m_isNativeCaretShown )
2193 {
2194 ::HideCaret(GetHwnd());
2195 }
2196
2197 event.Skip();
2198 }
2199
2200 // the rest of the file only deals with the rich edit controls
2201 #if wxUSE_RICHEDIT
2202
2203 // ----------------------------------------------------------------------------
2204 // EN_LINK processing
2205 // ----------------------------------------------------------------------------
2206
2207 bool wxTextCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
2208 {
2209 NMHDR *hdr = (NMHDR* )lParam;
2210 switch ( hdr->code )
2211 {
2212 case EN_MSGFILTER:
2213 {
2214 const MSGFILTER *msgf = (MSGFILTER *)lParam;
2215 UINT msg = msgf->msg;
2216
2217 // this is a bit crazy but richedit 1.0 sends us all mouse
2218 // events _except_ WM_LBUTTONUP (don't ask me why) so we have
2219 // generate the wxWin events for this message manually
2220 //
2221 // NB: in fact, this is still not totally correct as it does
2222 // send us WM_LBUTTONUP if the selection was cleared by the
2223 // last click -- so currently we get 2 events in this case,
2224 // but as I don't see any obvious way to check for this I
2225 // leave this code in place because it's still better than
2226 // not getting left up events at all
2227 if ( msg == WM_LBUTTONUP )
2228 {
2229 WXUINT flags = msgf->wParam;
2230 int x = GET_X_LPARAM(msgf->lParam),
2231 y = GET_Y_LPARAM(msgf->lParam);
2232
2233 HandleMouseEvent(msg, x, y, flags);
2234 }
2235 }
2236
2237 // return true to process the event (and false to ignore it)
2238 return true;
2239
2240 case EN_LINK:
2241 {
2242 const ENLINK *enlink = (ENLINK *)hdr;
2243
2244 switch ( enlink->msg )
2245 {
2246 case WM_SETCURSOR:
2247 // ok, so it is hardcoded - do we really nee to
2248 // customize it?
2249 {
2250 wxCursor cur(wxCURSOR_HAND);
2251 ::SetCursor(GetHcursorOf(cur));
2252 *result = TRUE;
2253 break;
2254 }
2255
2256 case WM_MOUSEMOVE:
2257 case WM_LBUTTONDOWN:
2258 case WM_LBUTTONUP:
2259 case WM_LBUTTONDBLCLK:
2260 case WM_RBUTTONDOWN:
2261 case WM_RBUTTONUP:
2262 case WM_RBUTTONDBLCLK:
2263 // send a mouse event
2264 {
2265 static const wxEventType eventsMouse[] =
2266 {
2267 wxEVT_MOTION,
2268 wxEVT_LEFT_DOWN,
2269 wxEVT_LEFT_UP,
2270 wxEVT_LEFT_DCLICK,
2271 wxEVT_RIGHT_DOWN,
2272 wxEVT_RIGHT_UP,
2273 wxEVT_RIGHT_DCLICK,
2274 };
2275
2276 // the event ids are consecutive
2277 wxMouseEvent
2278 evtMouse(eventsMouse[enlink->msg - WM_MOUSEMOVE]);
2279
2280 InitMouseEvent(evtMouse,
2281 GET_X_LPARAM(enlink->lParam),
2282 GET_Y_LPARAM(enlink->lParam),
2283 enlink->wParam);
2284
2285 wxTextUrlEvent event(m_windowId, evtMouse,
2286 enlink->chrg.cpMin,
2287 enlink->chrg.cpMax);
2288
2289 InitCommandEvent(event);
2290
2291 *result = ProcessCommand(event);
2292 }
2293 break;
2294 }
2295 }
2296 return true;
2297 }
2298
2299 // not processed, leave it to the base class
2300 return wxTextCtrlBase::MSWOnNotify(idCtrl, lParam, result);
2301 }
2302
2303 #if wxUSE_DRAG_AND_DROP
2304
2305 void wxTextCtrl::SetDropTarget(wxDropTarget *dropTarget)
2306 {
2307 if ( m_dropTarget == wxRICHTEXT_DEFAULT_DROPTARGET )
2308 {
2309 // get rid of the built-in drop target
2310 ::RevokeDragDrop(GetHwnd());
2311 m_dropTarget = NULL;
2312 }
2313
2314 wxTextCtrlBase::SetDropTarget(dropTarget);
2315 }
2316
2317 #endif // wxUSE_DRAG_AND_DROP
2318
2319 // ----------------------------------------------------------------------------
2320 // colour setting for the rich edit controls
2321 // ----------------------------------------------------------------------------
2322
2323 bool wxTextCtrl::SetBackgroundColour(const wxColour& colour)
2324 {
2325 if ( !wxTextCtrlBase::SetBackgroundColour(colour) )
2326 {
2327 // colour didn't really change
2328 return false;
2329 }
2330
2331 if ( IsRich() )
2332 {
2333 // rich edit doesn't use WM_CTLCOLOR, hence we need to send
2334 // EM_SETBKGNDCOLOR additionally
2335 ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour));
2336 }
2337
2338 return true;
2339 }
2340
2341 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
2342 {
2343 if ( !wxTextCtrlBase::SetForegroundColour(colour) )
2344 {
2345 // colour didn't really change
2346 return false;
2347 }
2348
2349 if ( IsRich() )
2350 {
2351 // change the colour of everything
2352 CHARFORMAT cf;
2353 wxZeroMemory(cf);
2354 cf.cbSize = sizeof(cf);
2355 cf.dwMask = CFM_COLOR;
2356 cf.crTextColor = wxColourToRGB(colour);
2357 ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf);
2358 }
2359
2360 return true;
2361 }
2362
2363 bool wxTextCtrl::SetFont(const wxFont& font)
2364 {
2365 if ( !wxTextCtrlBase::SetFont(font) )
2366 return false;
2367
2368 if ( GetRichVersion() >= 4 )
2369 {
2370 // Using WM_SETFONT is not enough with RichEdit 4.1: it does work but
2371 // for ASCII characters only and inserting a non-ASCII one into it
2372 // later reverts to the default font so use EM_SETCHARFORMAT to change
2373 // the default font for it.
2374 wxTextAttr attr;
2375 attr.SetFont(font);
2376 SetStyle(-1, -1, attr);
2377 }
2378
2379 return true;
2380 }
2381
2382 // ----------------------------------------------------------------------------
2383 // styling support for rich edit controls
2384 // ----------------------------------------------------------------------------
2385
2386 bool wxTextCtrl::MSWSetCharFormat(const wxTextAttr& style, long start, long end)
2387 {
2388 // initialize CHARFORMAT struct
2389 #if wxUSE_RICHEDIT2
2390 CHARFORMAT2 cf;
2391 #else
2392 CHARFORMAT cf;
2393 #endif
2394
2395 wxZeroMemory(cf);
2396
2397 // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2398 // CHARFORMAT in that case
2399 #if wxUSE_RICHEDIT2
2400 if ( m_verRichEdit == 1 )
2401 {
2402 // this is the only thing the control is going to grok
2403 cf.cbSize = sizeof(CHARFORMAT);
2404 }
2405 else
2406 #endif
2407 {
2408 // CHARFORMAT or CHARFORMAT2
2409 cf.cbSize = sizeof(cf);
2410 }
2411
2412 if ( style.HasFont() )
2413 {
2414 // VZ: CFM_CHARSET doesn't seem to do anything at all in RichEdit 2.0
2415 // but using it doesn't seem to hurt neither so leaving it for now
2416
2417 cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET |
2418 CFM_ITALIC | CFM_BOLD | CFM_UNDERLINE;
2419
2420 // fill in data from LOGFONT but recalculate lfHeight because we need
2421 // the real height in twips and not the negative number which
2422 // wxFillLogFont() returns (this is correct in general and works with
2423 // the Windows font mapper, but not here)
2424
2425 wxFont font(style.GetFont());
2426
2427 LOGFONT lf;
2428 wxFillLogFont(&lf, &font);
2429 cf.yHeight = 20*font.GetPointSize(); // 1 pt = 20 twips
2430 cf.bCharSet = lf.lfCharSet;
2431 cf.bPitchAndFamily = lf.lfPitchAndFamily;
2432 wxStrlcpy(cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName));
2433
2434 // also deal with underline/italic/bold attributes: note that we must
2435 // always set CFM_ITALIC &c bits in dwMask, even if we don't set the
2436 // style to allow clearing it
2437 if ( lf.lfItalic )
2438 {
2439 cf.dwEffects |= CFE_ITALIC;
2440 }
2441
2442 if ( lf.lfWeight == FW_BOLD )
2443 {
2444 cf.dwEffects |= CFE_BOLD;
2445 }
2446
2447 if ( lf.lfUnderline )
2448 {
2449 cf.dwEffects |= CFE_UNDERLINE;
2450 }
2451
2452 // strikeout fonts are not supported by wxWidgets
2453 }
2454
2455 if ( style.HasTextColour() )
2456 {
2457 cf.dwMask |= CFM_COLOR;
2458 cf.crTextColor = wxColourToRGB(style.GetTextColour());
2459 }
2460
2461 #if wxUSE_RICHEDIT2
2462 if ( m_verRichEdit != 1 && style.HasBackgroundColour() )
2463 {
2464 cf.dwMask |= CFM_BACKCOLOR;
2465 cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
2466 }
2467 #endif // wxUSE_RICHEDIT2
2468
2469 // Apply the style either to the selection or to the entire control.
2470 WPARAM selMode;
2471 if ( start != -1 || end != -1 )
2472 {
2473 DoSetSelection(start, end, SetSel_NoScroll);
2474 selMode = SCF_SELECTION;
2475 }
2476 else
2477 {
2478 selMode = SCF_ALL;
2479 }
2480
2481 if ( !::SendMessage(GetHwnd(), EM_SETCHARFORMAT, selMode, (LPARAM)&cf) )
2482 {
2483 wxLogLastError(wxT("SendMessage(EM_SETCHARFORMAT)"));
2484 return false;
2485 }
2486
2487 return true;
2488 }
2489
2490 bool wxTextCtrl::MSWSetParaFormat(const wxTextAttr& style, long start, long end)
2491 {
2492 #if wxUSE_RICHEDIT2
2493 PARAFORMAT2 pf;
2494 #else
2495 PARAFORMAT pf;
2496 #endif
2497
2498 wxZeroMemory(pf);
2499
2500 // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2501 // PARAFORMAT in that case
2502 #if wxUSE_RICHEDIT2
2503 if ( m_verRichEdit == 1 )
2504 {
2505 // this is the only thing the control is going to grok
2506 pf.cbSize = sizeof(PARAFORMAT);
2507 }
2508 else
2509 #endif
2510 {
2511 // PARAFORMAT or PARAFORMAT2
2512 pf.cbSize = sizeof(pf);
2513 }
2514
2515 if (style.HasAlignment())
2516 {
2517 pf.dwMask |= PFM_ALIGNMENT;
2518 if (style.GetAlignment() == wxTEXT_ALIGNMENT_RIGHT)
2519 pf.wAlignment = PFA_RIGHT;
2520 else if (style.GetAlignment() == wxTEXT_ALIGNMENT_CENTRE)
2521 pf.wAlignment = PFA_CENTER;
2522 else if (style.GetAlignment() == wxTEXT_ALIGNMENT_JUSTIFIED)
2523 pf.wAlignment = PFA_JUSTIFY;
2524 else
2525 pf.wAlignment = PFA_LEFT;
2526 }
2527
2528 if (style.HasLeftIndent())
2529 {
2530 pf.dwMask |= PFM_STARTINDENT | PFM_OFFSET;
2531
2532 // Convert from 1/10 mm to TWIPS
2533 pf.dxStartIndent = (int) (((double) style.GetLeftIndent()) * mm2twips / 10.0) ;
2534 pf.dxOffset = (int) (((double) style.GetLeftSubIndent()) * mm2twips / 10.0) ;
2535 }
2536
2537 if (style.HasRightIndent())
2538 {
2539 pf.dwMask |= PFM_RIGHTINDENT;
2540
2541 // Convert from 1/10 mm to TWIPS
2542 pf.dxRightIndent = (int) (((double) style.GetRightIndent()) * mm2twips / 10.0) ;
2543 }
2544
2545 if (style.HasTabs())
2546 {
2547 pf.dwMask |= PFM_TABSTOPS;
2548
2549 const wxArrayInt& tabs = style.GetTabs();
2550
2551 pf.cTabCount = (SHORT)wxMin(tabs.GetCount(), MAX_TAB_STOPS);
2552 size_t i;
2553 for (i = 0; i < (size_t) pf.cTabCount; i++)
2554 {
2555 // Convert from 1/10 mm to TWIPS
2556 pf.rgxTabs[i] = (int) (((double) tabs[i]) * mm2twips / 10.0) ;
2557 }
2558 }
2559
2560 #if wxUSE_RICHEDIT2
2561 if ( m_verRichEdit > 1 )
2562 {
2563 if ( wxTheApp->GetLayoutDirection() == wxLayout_RightToLeft )
2564 {
2565 // Use RTL paragraphs in RTL mode to get proper layout
2566 pf.dwMask |= PFM_RTLPARA;
2567 pf.wEffects |= PFE_RTLPARA;
2568 }
2569 }
2570 #endif // wxUSE_RICHEDIT2
2571
2572 if ( pf.dwMask )
2573 {
2574 // Do format the selection.
2575 DoSetSelection(start, end, SetSel_NoScroll);
2576
2577 if ( !::SendMessage(GetHwnd(), EM_SETPARAFORMAT, 0, (LPARAM) &pf) )
2578 {
2579 wxLogLastError(wxT("SendMessage(EM_SETPARAFORMAT)"));
2580
2581 return false;
2582 }
2583 }
2584
2585 return true;
2586 }
2587
2588 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
2589 {
2590 if ( !IsRich() )
2591 {
2592 // can't do it with normal text control
2593 return false;
2594 }
2595
2596 // the richedit 1.0 doesn't handle setting background colour, so don't
2597 // even try to do anything if it's the only thing we want to change
2598 if ( m_verRichEdit == 1 && !style.HasFont() && !style.HasTextColour() &&
2599 !style.HasLeftIndent() && !style.HasRightIndent() && !style.HasAlignment() &&
2600 !style.HasTabs() )
2601 {
2602 // nothing to do: return true if there was really nothing to do and
2603 // false if we failed to set bg colour
2604 return !style.HasBackgroundColour();
2605 }
2606
2607 // order the range if needed
2608 if ( start > end )
2609 wxSwap(start, end);
2610
2611 // we can only change the format of the selection, so select the range we
2612 // want and restore the old selection later, after MSWSetXXXFormat()
2613 // functions (possibly) change it.
2614 long startOld, endOld;
2615 GetSelection(&startOld, &endOld);
2616
2617 bool ok = MSWSetCharFormat(style, start, end);
2618 if ( !MSWSetParaFormat(style, start, end) )
2619 ok = false;
2620
2621 if ( start != startOld || end != endOld )
2622 {
2623 // restore the original selection
2624 DoSetSelection(startOld, endOld, SetSel_NoScroll);
2625 }
2626
2627 return ok;
2628 }
2629
2630 bool wxTextCtrl::SetDefaultStyle(const wxTextAttr& style)
2631 {
2632 if ( !wxTextCtrlBase::SetDefaultStyle(style) )
2633 return false;
2634
2635 if ( IsEditable() )
2636 {
2637 // we have to do this or the style wouldn't apply for the text typed by
2638 // the user
2639 wxTextPos posLast = GetLastPosition();
2640 SetStyle(posLast, posLast, m_defaultStyle);
2641 }
2642
2643 return true;
2644 }
2645
2646 bool wxTextCtrl::GetStyle(long position, wxTextAttr& style)
2647 {
2648 if ( !IsRich() )
2649 {
2650 // can't do it with normal text control
2651 return false;
2652 }
2653
2654 // initialize CHARFORMAT struct
2655 #if wxUSE_RICHEDIT2
2656 CHARFORMAT2 cf;
2657 #else
2658 CHARFORMAT cf;
2659 #endif
2660
2661 wxZeroMemory(cf);
2662
2663 // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2664 // CHARFORMAT in that case
2665 #if wxUSE_RICHEDIT2
2666 if ( m_verRichEdit == 1 )
2667 {
2668 // this is the only thing the control is going to grok
2669 cf.cbSize = sizeof(CHARFORMAT);
2670 }
2671 else
2672 #endif
2673 {
2674 // CHARFORMAT or CHARFORMAT2
2675 cf.cbSize = sizeof(cf);
2676 }
2677 // we can only change the format of the selection, so select the range we
2678 // want and restore the old selection later
2679 long startOld, endOld;
2680 GetSelection(&startOld, &endOld);
2681
2682 // but do we really have to change the selection?
2683 bool changeSel = position != startOld || position != endOld;
2684
2685 if ( changeSel )
2686 {
2687 DoSetSelection(position, position + 1, SetSel_NoScroll);
2688 }
2689
2690 // get the selection formatting
2691 (void) ::SendMessage(GetHwnd(), EM_GETCHARFORMAT,
2692 SCF_SELECTION, (LPARAM)&cf) ;
2693
2694
2695 LOGFONT lf;
2696 lf.lfHeight = cf.yHeight;
2697 lf.lfWidth = 0;
2698 lf.lfCharSet = ANSI_CHARSET; // FIXME: how to get correct charset?
2699 lf.lfClipPrecision = 0;
2700 lf.lfEscapement = 0;
2701 wxStrcpy(lf.lfFaceName, cf.szFaceName);
2702
2703 //NOTE: we _MUST_ set each of these values to _something_ since we
2704 //do not call wxZeroMemory on the LOGFONT lf
2705 if (cf.dwEffects & CFE_ITALIC)
2706 lf.lfItalic = TRUE;
2707 else
2708 lf.lfItalic = FALSE;
2709
2710 lf.lfOrientation = 0;
2711 lf.lfPitchAndFamily = cf.bPitchAndFamily;
2712 lf.lfQuality = 0;
2713
2714 if (cf.dwEffects & CFE_STRIKEOUT)
2715 lf.lfStrikeOut = TRUE;
2716 else
2717 lf.lfStrikeOut = FALSE;
2718
2719 if (cf.dwEffects & CFE_UNDERLINE)
2720 lf.lfUnderline = TRUE;
2721 else
2722 lf.lfUnderline = FALSE;
2723
2724 if (cf.dwEffects & CFE_BOLD)
2725 lf.lfWeight = FW_BOLD;
2726 else
2727 lf.lfWeight = FW_NORMAL;
2728
2729 wxFont font = wxCreateFontFromLogFont(& lf);
2730 if (font.Ok())
2731 {
2732 style.SetFont(font);
2733 }
2734 style.SetTextColour(wxColour(cf.crTextColor));
2735
2736 #if wxUSE_RICHEDIT2
2737 if ( m_verRichEdit != 1 )
2738 {
2739 // cf.dwMask |= CFM_BACKCOLOR;
2740 style.SetBackgroundColour(wxColour(cf.crBackColor));
2741 }
2742 #endif // wxUSE_RICHEDIT2
2743
2744 // now get the paragraph formatting
2745 PARAFORMAT2 pf;
2746 wxZeroMemory(pf);
2747 // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2748 // PARAFORMAT in that case
2749 #if wxUSE_RICHEDIT2
2750 if ( m_verRichEdit == 1 )
2751 {
2752 // this is the only thing the control is going to grok
2753 pf.cbSize = sizeof(PARAFORMAT);
2754 }
2755 else
2756 #endif
2757 {
2758 // PARAFORMAT or PARAFORMAT2
2759 pf.cbSize = sizeof(pf);
2760 }
2761
2762 // do format the selection
2763 (void) ::SendMessage(GetHwnd(), EM_GETPARAFORMAT, 0, (LPARAM) &pf) ;
2764
2765 style.SetLeftIndent( (int) ((double) pf.dxStartIndent * twips2mm * 10.0), (int) ((double) pf.dxOffset * twips2mm * 10.0) );
2766 style.SetRightIndent( (int) ((double) pf.dxRightIndent * twips2mm * 10.0) );
2767
2768 if (pf.wAlignment == PFA_CENTER)
2769 style.SetAlignment(wxTEXT_ALIGNMENT_CENTRE);
2770 else if (pf.wAlignment == PFA_RIGHT)
2771 style.SetAlignment(wxTEXT_ALIGNMENT_RIGHT);
2772 else if (pf.wAlignment == PFA_JUSTIFY)
2773 style.SetAlignment(wxTEXT_ALIGNMENT_JUSTIFIED);
2774 else
2775 style.SetAlignment(wxTEXT_ALIGNMENT_LEFT);
2776
2777 wxArrayInt tabStops;
2778 size_t i;
2779 for (i = 0; i < (size_t) pf.cTabCount; i++)
2780 {
2781 tabStops.Add( (int) ((double) (pf.rgxTabs[i] & 0xFFFF) * twips2mm * 10.0) );
2782 }
2783
2784 if ( changeSel )
2785 {
2786 // restore the original selection
2787 DoSetSelection(startOld, endOld, SetSel_NoScroll);
2788 }
2789
2790 return true;
2791 }
2792
2793 // ----------------------------------------------------------------------------
2794 // wxRichEditModule
2795 // ----------------------------------------------------------------------------
2796
2797 static const HINSTANCE INVALID_HINSTANCE = (HINSTANCE)-1;
2798
2799 bool wxRichEditModule::OnInit()
2800 {
2801 // don't do anything - we will load it when needed
2802 return true;
2803 }
2804
2805 void wxRichEditModule::OnExit()
2806 {
2807 for ( size_t i = 0; i < WXSIZEOF(ms_hRichEdit); i++ )
2808 {
2809 if ( ms_hRichEdit[i] && ms_hRichEdit[i] != INVALID_HINSTANCE )
2810 {
2811 ::FreeLibrary(ms_hRichEdit[i]);
2812 ms_hRichEdit[i] = NULL;
2813 }
2814 }
2815 #if wxUSE_INKEDIT
2816 if (ms_inkEditLib.IsLoaded())
2817 ms_inkEditLib.Unload();
2818 #endif
2819 }
2820
2821 /* static */
2822 bool wxRichEditModule::Load(Version version)
2823 {
2824 if ( ms_hRichEdit[version] == INVALID_HINSTANCE )
2825 {
2826 // we had already tried to load it and failed
2827 return false;
2828 }
2829
2830 if ( ms_hRichEdit[version] )
2831 {
2832 // we've already got this one
2833 return true;
2834 }
2835
2836 static const wxChar *const dllnames[] =
2837 {
2838 wxT("riched32"),
2839 wxT("riched20"),
2840 wxT("msftedit"),
2841 };
2842
2843 wxCOMPILE_TIME_ASSERT( WXSIZEOF(dllnames) == Version_Max,
2844 RichEditDllNamesVersionsMismatch );
2845
2846 ms_hRichEdit[version] = ::LoadLibrary(dllnames[version]);
2847
2848 if ( !ms_hRichEdit[version] )
2849 {
2850 ms_hRichEdit[version] = INVALID_HINSTANCE;
2851
2852 return false;
2853 }
2854
2855 return true;
2856 }
2857
2858 #if wxUSE_INKEDIT
2859 // load the InkEdit library
2860 bool wxRichEditModule::LoadInkEdit()
2861 {
2862 if (ms_inkEditLibLoadAttemped)
2863 return ms_inkEditLib.IsLoaded();
2864
2865 ms_inkEditLibLoadAttemped = true;
2866
2867 wxLogNull logNull;
2868 return ms_inkEditLib.Load(wxT("inked"));
2869 }
2870 #endif // wxUSE_INKEDIT
2871
2872
2873 #endif // wxUSE_RICHEDIT
2874
2875 #endif // wxUSE_TEXTCTRL && !(__SMARTPHONE__ && __WXWINCE__)
wxWidgets (Impactor)