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Use white background by default for multiline readonly wxTextCtrl under MSW.
[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 #if !wxUSE_WCHAR_T
1042 free(wchBuf);
1043 #endif // !wxUSE_WCHAR_T
1044
1045 return true;
1046 }
1047
1048 #if !wxUSE_UNICODE_MSLU
1049
1050 wxString
1051 wxTextCtrl::StreamOut(wxFontEncoding encoding, bool selectionOnly) const
1052 {
1053 wxString out;
1054
1055 const int len = GetWindowTextLength(GetHwnd());
1056
1057 #if wxUSE_WCHAR_T
1058 wxWCharBuffer wchBuf(len);
1059 wchar_t *wpc = wchBuf.data();
1060 #else
1061 wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
1062 wchar_t *wpc = wchBuf;
1063 #endif
1064
1065 wxStreamOutData data;
1066 data.wpc = wpc;
1067 data.len = len;
1068
1069 EDITSTREAM eds;
1070 wxZeroMemory(eds);
1071 eds.dwCookie = (DWORD)&data;
1072 eds.pfnCallback = wxRichEditStreamOut;
1073
1074 ::SendMessage
1075 (
1076 GetHwnd(),
1077 EM_STREAMOUT,
1078 SF_TEXT | SF_UNICODE | (selectionOnly ? SFF_SELECTION : 0),
1079 (LPARAM)&eds
1080 );
1081
1082 if ( eds.dwError )
1083 {
1084 wxLogLastError(wxT("EM_STREAMOUT"));
1085 }
1086 else // streamed out ok
1087 {
1088 // NUL-terminate the string because its length could have been
1089 // decreased by wxRichEditStreamOut
1090 *(wchBuf.data() + data.len) = L'\0';
1091
1092 // now convert to the given encoding (this is a possibly lossful
1093 // conversion but what else can we do)
1094 wxCSConv conv(encoding);
1095 size_t lenNeeded = conv.WC2MB(NULL, wchBuf, 0);
1096
1097 if ( lenNeeded != wxCONV_FAILED && lenNeeded++ )
1098 {
1099 conv.WC2MB(wxStringBuffer(out, lenNeeded), wchBuf, lenNeeded);
1100 }
1101 }
1102
1103 #if !wxUSE_WCHAR_T
1104 free(wchBuf);
1105 #endif // !wxUSE_WCHAR_T
1106
1107 return out;
1108 }
1109
1110 #endif // !wxUSE_UNICODE_MSLU
1111
1112 #endif // wxUSE_RICHEDIT
1113
1114 void wxTextCtrl::WriteText(const wxString& value)
1115 {
1116 DoWriteText(value);
1117 }
1118
1119 void wxTextCtrl::DoWriteText(const wxString& value, int flags)
1120 {
1121 bool selectionOnly = (flags & SetValue_SelectionOnly) != 0;
1122 wxString valueDos;
1123 if ( m_windowStyle & wxTE_MULTILINE )
1124 valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
1125 else
1126 valueDos = value;
1127
1128 #if wxUSE_RICHEDIT
1129 // there are several complications with the rich edit controls here
1130 bool done = false;
1131 if ( IsRich() )
1132 {
1133 // first, ensure that the new text will be in the default style
1134 if ( !m_defaultStyle.IsDefault() )
1135 {
1136 long start, end;
1137 GetSelection(&start, &end);
1138 SetStyle(start, end, m_defaultStyle);
1139 }
1140
1141 #if wxUSE_UNICODE_MSLU
1142 // RichEdit doesn't have Unicode version of EM_REPLACESEL on Win9x,
1143 // but EM_STREAMIN works
1144 if ( wxUsingUnicowsDll() && GetRichVersion() > 1 )
1145 {
1146 done = StreamIn(valueDos, wxFONTENCODING_SYSTEM, selectionOnly);
1147 }
1148 #endif // wxUSE_UNICODE_MSLU
1149
1150 #if !wxUSE_UNICODE
1151 // next check if the text we're inserting must be shown in a non
1152 // default charset -- this only works for RichEdit > 1.0
1153 if ( GetRichVersion() > 1 )
1154 {
1155 wxFont font = m_defaultStyle.GetFont();
1156 if ( !font.Ok() )
1157 font = GetFont();
1158
1159 if ( font.Ok() )
1160 {
1161 wxFontEncoding encoding = font.GetEncoding();
1162 if ( encoding != wxFONTENCODING_SYSTEM )
1163 {
1164 // we have to use EM_STREAMIN to force richedit control 2.0+
1165 // to show any text in the non default charset -- otherwise
1166 // it thinks it knows better than we do and always shows it
1167 // in the default one
1168 done = StreamIn(valueDos, encoding, selectionOnly);
1169 }
1170 }
1171 }
1172 #endif // !wxUSE_UNICODE
1173 }
1174
1175 if ( !done )
1176 #endif // wxUSE_RICHEDIT
1177 {
1178 // in some cases we get 2 EN_CHANGE notifications after the SendMessage
1179 // call (this happens for plain EDITs with EM_REPLACESEL and under some
1180 // -- undetermined -- conditions with rich edit) and sometimes we don't
1181 // get any events at all (plain EDIT with WM_SETTEXT), so ensure that
1182 // we generate exactly one of them by ignoring all but the first one in
1183 // SendUpdateEvent() and generating one ourselves if we hadn't got any
1184 // notifications from Windows
1185 if ( !(flags & SetValue_SendEvent) )
1186 m_updatesCount = -2; // suppress any update event
1187
1188 UpdatesCountFilter ucf(m_updatesCount);
1189
1190 ::SendMessage(GetHwnd(), selectionOnly ? EM_REPLACESEL : WM_SETTEXT,
1191 // EM_REPLACESEL takes 1 to indicate the operation should be redoable
1192 selectionOnly ? 1 : 0, (LPARAM)valueDos.wx_str());
1193
1194 if ( !ucf.GotUpdate() && (flags & SetValue_SendEvent) )
1195 {
1196 SendUpdateEvent();
1197 }
1198 }
1199 }
1200
1201 void wxTextCtrl::AppendText(const wxString& text)
1202 {
1203 wxTextEntry::AppendText(text);
1204
1205 #if wxUSE_RICHEDIT
1206 // don't do this if we're frozen, saves some time
1207 if ( !IsFrozen() && IsMultiLine() && GetRichVersion() > 1 )
1208 {
1209 // setting the caret to the end and showing it simply doesn't work for
1210 // RichEdit 2.0 -- force it to still do what we want
1211 ::SendMessage(GetHwnd(), EM_LINESCROLL, 0, GetNumberOfLines());
1212 }
1213 #endif // wxUSE_RICHEDIT
1214 }
1215
1216 void wxTextCtrl::Clear()
1217 {
1218 ::SetWindowText(GetHwnd(), wxEmptyString);
1219
1220 if ( IsMultiLine() && !IsRich() )
1221 {
1222 // rich edit controls send EN_UPDATE from WM_SETTEXT handler themselves
1223 // but the normal ones don't -- make Clear() behaviour consistent by
1224 // always sending this event
1225 SendUpdateEvent();
1226 }
1227 }
1228
1229 #ifdef __WIN32__
1230
1231 bool wxTextCtrl::EmulateKeyPress(const wxKeyEvent& event)
1232 {
1233 SetFocus();
1234
1235 size_t lenOld = GetValue().length();
1236
1237 wxUint32 code = event.GetRawKeyCode();
1238 ::keybd_event((BYTE)code, 0, 0 /* key press */, 0);
1239 ::keybd_event((BYTE)code, 0, KEYEVENTF_KEYUP, 0);
1240
1241 // assume that any alphanumeric key changes the total number of characters
1242 // in the control - this should work in 99% of cases
1243 return GetValue().length() != lenOld;
1244 }
1245
1246 #endif // __WIN32__
1247
1248 // ----------------------------------------------------------------------------
1249 // Accessors
1250 // ----------------------------------------------------------------------------
1251
1252 void wxTextCtrl::SetInsertionPointEnd()
1253 {
1254 // we must not do anything if the caret is already there because calling
1255 // SetInsertionPoint() thaws the controls if Freeze() had been called even
1256 // if it doesn't actually move the caret anywhere and so the simple fact of
1257 // doing it results in horrible flicker when appending big amounts of text
1258 // to the control in a few chunks (see DoAddText() test in the text sample)
1259 const wxTextPos lastPosition = GetLastPosition();
1260 if ( GetInsertionPoint() == lastPosition )
1261 {
1262 return;
1263 }
1264
1265 SetInsertionPoint(lastPosition);
1266 }
1267
1268 long wxTextCtrl::GetInsertionPoint() const
1269 {
1270 #if wxUSE_RICHEDIT
1271 if ( IsRich() )
1272 {
1273 CHARRANGE range;
1274 range.cpMin = 0;
1275 range.cpMax = 0;
1276 ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
1277 return range.cpMin;
1278 }
1279 #endif // wxUSE_RICHEDIT
1280
1281 return wxTextEntry::GetInsertionPoint();
1282 }
1283
1284 wxTextPos wxTextCtrl::GetLastPosition() const
1285 {
1286 if ( IsMultiLine() )
1287 {
1288 int numLines = GetNumberOfLines();
1289 long posStartLastLine = XYToPosition(0, numLines - 1);
1290
1291 long lenLastLine = GetLengthOfLineContainingPos(posStartLastLine);
1292
1293 return posStartLastLine + lenLastLine;
1294 }
1295
1296 return wxTextEntry::GetLastPosition();
1297 }
1298
1299 // If the return values from and to are the same, there is no
1300 // selection.
1301 void wxTextCtrl::GetSelection(long *from, long *to) const
1302 {
1303 #if wxUSE_RICHEDIT
1304 if ( IsRich() )
1305 {
1306 CHARRANGE charRange;
1307 ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &charRange);
1308
1309 *from = charRange.cpMin;
1310 *to = charRange.cpMax;
1311 }
1312 else
1313 #endif // !wxUSE_RICHEDIT
1314 {
1315 wxTextEntry::GetSelection(from, to);
1316 }
1317 }
1318
1319 // ----------------------------------------------------------------------------
1320 // selection
1321 // ----------------------------------------------------------------------------
1322
1323 void wxTextCtrl::DoSetSelection(long from, long to, int flags)
1324 {
1325 HWND hWnd = GetHwnd();
1326
1327 #if wxUSE_RICHEDIT
1328 if ( IsRich() )
1329 {
1330 // if from and to are both -1, it means (in wxWidgets) that all text
1331 // should be selected, translate this into Windows convention
1332 if ( (from == -1) && (to == -1) )
1333 {
1334 from = 0;
1335 }
1336
1337 CHARRANGE range;
1338 range.cpMin = from;
1339 range.cpMax = to;
1340 ::SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM)&range);
1341 }
1342 else
1343 #endif // wxUSE_RICHEDIT
1344 {
1345 wxTextEntry::DoSetSelection(from, to, flags);
1346 }
1347
1348 if ( (flags & SetSel_Scroll) && !IsFrozen() )
1349 {
1350 #if wxUSE_RICHEDIT
1351 // richedit 3.0 (i.e. the version living in riched20.dll distributed
1352 // with Windows 2000 and beyond) doesn't honour EM_SCROLLCARET when
1353 // emulating richedit 2.0 unless the control has focus or ECO_NOHIDESEL
1354 // option is set (but it does work ok in richedit 1.0 mode...)
1355 //
1356 // so to make it work we either need to give focus to it here which
1357 // will probably create many problems (dummy focus events; window
1358 // containing the text control being brought to foreground
1359 // unexpectedly; ...) or to temporarily set ECO_NOHIDESEL which may
1360 // create other problems too -- and in fact it does because if we turn
1361 // on/off this style while appending the text to the control, the
1362 // vertical scrollbar never appears in it even if we append tons of
1363 // text and to work around this the only solution I found was to use
1364 // ES_DISABLENOSCROLL
1365 //
1366 // this is very ugly but I don't see any other way to make this work
1367 long style = 0;
1368 if ( GetRichVersion() > 1 )
1369 {
1370 if ( !HasFlag(wxTE_NOHIDESEL) )
1371 {
1372 // setting ECO_NOHIDESEL also sets WS_VISIBLE and possibly
1373 // others, remember the style so we can reset it later if needed
1374 style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1375 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1376 ECOOP_OR, ECO_NOHIDESEL);
1377 }
1378 //else: everything is already ok
1379 }
1380 #endif // wxUSE_RICHEDIT
1381
1382 ::SendMessage(hWnd, EM_SCROLLCARET, 0, (LPARAM)0);
1383
1384 #if wxUSE_RICHEDIT
1385 // restore ECO_NOHIDESEL if we changed it
1386 if ( GetRichVersion() > 1 && !HasFlag(wxTE_NOHIDESEL) )
1387 {
1388 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1389 ECOOP_AND, ~ECO_NOHIDESEL);
1390 if ( style != ::GetWindowLong(GetHwnd(), GWL_STYLE) )
1391 ::SetWindowLong(GetHwnd(), GWL_STYLE, style);
1392 }
1393 #endif // wxUSE_RICHEDIT
1394 }
1395 }
1396
1397 // ----------------------------------------------------------------------------
1398 // Working with files
1399 // ----------------------------------------------------------------------------
1400
1401 bool wxTextCtrl::DoLoadFile(const wxString& file, int fileType)
1402 {
1403 if ( wxTextCtrlBase::DoLoadFile(file, fileType) )
1404 {
1405 // update the size limit if needed
1406 AdjustSpaceLimit();
1407
1408 return true;
1409 }
1410
1411 return false;
1412 }
1413
1414 // ----------------------------------------------------------------------------
1415 // dirty status
1416 // ----------------------------------------------------------------------------
1417
1418 bool wxTextCtrl::IsModified() const
1419 {
1420 return ::SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0;
1421 }
1422
1423 void wxTextCtrl::MarkDirty()
1424 {
1425 ::SendMessage(GetHwnd(), EM_SETMODIFY, TRUE, 0);
1426 }
1427
1428 void wxTextCtrl::DiscardEdits()
1429 {
1430 ::SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0);
1431 }
1432
1433 // ----------------------------------------------------------------------------
1434 // Positions <-> coords
1435 // ----------------------------------------------------------------------------
1436
1437 int wxTextCtrl::GetNumberOfLines() const
1438 {
1439 return (int)::SendMessage(GetHwnd(), EM_GETLINECOUNT, 0, 0);
1440 }
1441
1442 long wxTextCtrl::XYToPosition(long x, long y) const
1443 {
1444 // This gets the char index for the _beginning_ of this line
1445 long charIndex = ::SendMessage(GetHwnd(), EM_LINEINDEX, y, 0);
1446
1447 return charIndex + x;
1448 }
1449
1450 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
1451 {
1452 HWND hWnd = GetHwnd();
1453
1454 // This gets the line number containing the character
1455 long lineNo;
1456 #if wxUSE_RICHEDIT
1457 if ( IsRich() )
1458 {
1459 lineNo = ::SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, pos);
1460 }
1461 else
1462 #endif // wxUSE_RICHEDIT
1463 {
1464 lineNo = ::SendMessage(hWnd, EM_LINEFROMCHAR, pos, 0);
1465 }
1466
1467 if ( lineNo == -1 )
1468 {
1469 // no such line
1470 return false;
1471 }
1472
1473 // This gets the char index for the _beginning_ of this line
1474 long charIndex = ::SendMessage(hWnd, EM_LINEINDEX, lineNo, 0);
1475 if ( charIndex == -1 )
1476 {
1477 return false;
1478 }
1479
1480 // The X position must therefore be the different between pos and charIndex
1481 if ( x )
1482 *x = pos - charIndex;
1483 if ( y )
1484 *y = lineNo;
1485
1486 return true;
1487 }
1488
1489 wxTextCtrlHitTestResult
1490 wxTextCtrl::HitTest(const wxPoint& pt, long *posOut) const
1491 {
1492 // first get the position from Windows
1493 LPARAM lParam;
1494
1495 #if wxUSE_RICHEDIT
1496 POINTL ptl;
1497 if ( IsRich() )
1498 {
1499 // for rich edit controls the position is passed iva the struct fields
1500 ptl.x = pt.x;
1501 ptl.y = pt.y;
1502 lParam = (LPARAM)&ptl;
1503 }
1504 else
1505 #endif // wxUSE_RICHEDIT
1506 {
1507 // for the plain ones, we are limited to 16 bit positions which are
1508 // combined in a single 32 bit value
1509 lParam = MAKELPARAM(pt.x, pt.y);
1510 }
1511
1512 LRESULT pos = ::SendMessage(GetHwnd(), EM_CHARFROMPOS, 0, lParam);
1513
1514 if ( pos == -1 )
1515 {
1516 // this seems to indicate an error...
1517 return wxTE_HT_UNKNOWN;
1518 }
1519
1520 #if wxUSE_RICHEDIT
1521 if ( !IsRich() )
1522 #endif // wxUSE_RICHEDIT
1523 {
1524 // for plain EDIT controls the higher word contains something else
1525 pos = LOWORD(pos);
1526 }
1527
1528
1529 // next determine where it is relatively to our point: EM_CHARFROMPOS
1530 // always returns the closest character but we need to be more precise, so
1531 // double check that we really are where it pretends
1532 POINTL ptReal;
1533
1534 #if wxUSE_RICHEDIT
1535 // FIXME: we need to distinguish between richedit 2 and 3 here somehow but
1536 // we don't know how to do it
1537 if ( IsRich() )
1538 {
1539 ::SendMessage(GetHwnd(), EM_POSFROMCHAR, (WPARAM)&ptReal, pos);
1540 }
1541 else
1542 #endif // wxUSE_RICHEDIT
1543 {
1544 LRESULT lRc = ::SendMessage(GetHwnd(), EM_POSFROMCHAR, pos, 0);
1545
1546 if ( lRc == -1 )
1547 {
1548 // this is apparently returned when pos corresponds to the last
1549 // position
1550 ptReal.x =
1551 ptReal.y = 0;
1552 }
1553 else
1554 {
1555 ptReal.x = LOWORD(lRc);
1556 ptReal.y = HIWORD(lRc);
1557 }
1558 }
1559
1560 wxTextCtrlHitTestResult rc;
1561
1562 if ( pt.y > ptReal.y + GetCharHeight() )
1563 rc = wxTE_HT_BELOW;
1564 else if ( pt.x > ptReal.x + GetCharWidth() )
1565 rc = wxTE_HT_BEYOND;
1566 else
1567 rc = wxTE_HT_ON_TEXT;
1568
1569 if ( posOut )
1570 *posOut = pos;
1571
1572 return rc;
1573 }
1574
1575 // ----------------------------------------------------------------------------
1576 //
1577 // ----------------------------------------------------------------------------
1578
1579 void wxTextCtrl::ShowPosition(long pos)
1580 {
1581 HWND hWnd = GetHwnd();
1582
1583 // To scroll to a position, we pass the number of lines and characters
1584 // to scroll *by*. This means that we need to:
1585 // (1) Find the line position of the current line.
1586 // (2) Find the line position of pos.
1587 // (3) Scroll by (pos - current).
1588 // For now, ignore the horizontal scrolling.
1589
1590 // Is this where scrolling is relative to - the line containing the caret?
1591 // Or is the first visible line??? Try first visible line.
1592 // int currentLineLineNo1 = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, -1, 0L);
1593
1594 int currentLineLineNo = (int)::SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, 0, 0);
1595
1596 int specifiedLineLineNo = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, pos, 0);
1597
1598 int linesToScroll = specifiedLineLineNo - currentLineLineNo;
1599
1600 if (linesToScroll != 0)
1601 ::SendMessage(hWnd, EM_LINESCROLL, 0, linesToScroll);
1602 }
1603
1604 long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const
1605 {
1606 return ::SendMessage(GetHwnd(), EM_LINELENGTH, pos, 0);
1607 }
1608
1609 int wxTextCtrl::GetLineLength(long lineNo) const
1610 {
1611 long pos = XYToPosition(0, lineNo);
1612
1613 return GetLengthOfLineContainingPos(pos);
1614 }
1615
1616 wxString wxTextCtrl::GetLineText(long lineNo) const
1617 {
1618 size_t len = (size_t)GetLineLength(lineNo) + 1;
1619
1620 // there must be at least enough place for the length WORD in the
1621 // buffer
1622 len += sizeof(WORD);
1623
1624 wxString str;
1625 {
1626 wxStringBufferLength tmp(str, len);
1627 wxChar *buf = tmp;
1628
1629 *(WORD *)buf = (WORD)len;
1630 len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf);
1631
1632 #if wxUSE_RICHEDIT
1633 if ( IsRich() )
1634 {
1635 // remove the '\r' returned by the rich edit control, the user code
1636 // should never see it
1637 if ( buf[len - 2] == wxT('\r') && buf[len - 1] == wxT('\n') )
1638 {
1639 // richedit 1.0 uses "\r\n" as line terminator, so remove "\r"
1640 // here and "\n" below
1641 buf[len - 2] = wxT('\n');
1642 len--;
1643 }
1644 else if ( buf[len - 1] == wxT('\r') )
1645 {
1646 // richedit 2.0+ uses only "\r", replace it with "\n"
1647 buf[len - 1] = wxT('\n');
1648 }
1649 }
1650 #endif // wxUSE_RICHEDIT
1651
1652 // remove the '\n' at the end, if any (this is how this function is
1653 // supposed to work according to the docs)
1654 if ( buf[len - 1] == wxT('\n') )
1655 {
1656 len--;
1657 }
1658
1659 buf[len] = 0;
1660 tmp.SetLength(len);
1661 }
1662
1663 return str;
1664 }
1665
1666 void wxTextCtrl::SetMaxLength(unsigned long len)
1667 {
1668 #if wxUSE_RICHEDIT
1669 if ( IsRich() )
1670 {
1671 ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, len ? len : 0x7fffffff);
1672 }
1673 else
1674 #endif // wxUSE_RICHEDIT
1675 {
1676 wxTextEntry::SetMaxLength(len);
1677 }
1678 }
1679
1680 // ----------------------------------------------------------------------------
1681 // Undo/redo
1682 // ----------------------------------------------------------------------------
1683
1684 void wxTextCtrl::Redo()
1685 {
1686 #if wxUSE_RICHEDIT
1687 if ( GetRichVersion() > 1 )
1688 {
1689 ::SendMessage(GetHwnd(), EM_REDO, 0, 0);
1690 return;
1691 }
1692 #endif // wxUSE_RICHEDIT
1693
1694 wxTextEntry::Redo();
1695 }
1696
1697 bool wxTextCtrl::CanRedo() const
1698 {
1699 #if wxUSE_RICHEDIT
1700 if ( GetRichVersion() > 1 )
1701 return ::SendMessage(GetHwnd(), EM_CANREDO, 0, 0) != 0;
1702 #endif // wxUSE_RICHEDIT
1703
1704 return wxTextEntry::CanRedo();
1705 }
1706
1707 // ----------------------------------------------------------------------------
1708 // caret handling (Windows only)
1709 // ----------------------------------------------------------------------------
1710
1711 bool wxTextCtrl::ShowNativeCaret(bool show)
1712 {
1713 if ( show != m_isNativeCaretShown )
1714 {
1715 if ( !(show ? ::ShowCaret(GetHwnd()) : ::HideCaret(GetHwnd())) )
1716 {
1717 // not an error, may simply indicate that it's not shown/hidden
1718 // yet (i.e. it had been hidden/shown 2 times before)
1719 return false;
1720 }
1721
1722 m_isNativeCaretShown = show;
1723 }
1724
1725 return true;
1726 }
1727
1728 // ----------------------------------------------------------------------------
1729 // implementation details
1730 // ----------------------------------------------------------------------------
1731
1732 void wxTextCtrl::Command(wxCommandEvent & event)
1733 {
1734 SetValue(event.GetString());
1735 ProcessCommand (event);
1736 }
1737
1738 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
1739 {
1740 // By default, load the first file into the text window.
1741 if (event.GetNumberOfFiles() > 0)
1742 {
1743 LoadFile(event.GetFiles()[0]);
1744 }
1745 }
1746
1747 // ----------------------------------------------------------------------------
1748 // kbd input processing
1749 // ----------------------------------------------------------------------------
1750
1751 bool wxTextCtrl::MSWShouldPreProcessMessage(WXMSG* msg)
1752 {
1753 // check for our special keys here: if we don't do it and the parent frame
1754 // uses them as accelerators, they wouldn't work at all, so we disable
1755 // usual preprocessing for them
1756 if ( msg->message == WM_KEYDOWN )
1757 {
1758 const WPARAM vkey = msg->wParam;
1759 if ( HIWORD(msg->lParam) & KF_ALTDOWN )
1760 {
1761 // Alt-Backspace is accelerator for "Undo"
1762 if ( vkey == VK_BACK )
1763 return false;
1764 }
1765 else // no Alt
1766 {
1767 // we want to process some Ctrl-foo and Shift-bar but no key
1768 // combinations without either Ctrl or Shift nor with both of them
1769 // pressed
1770 const int ctrl = wxIsCtrlDown(),
1771 shift = wxIsShiftDown();
1772 switch ( ctrl + shift )
1773 {
1774 default:
1775 wxFAIL_MSG( wxT("how many modifiers have we got?") );
1776 // fall through
1777
1778 case 0:
1779 if ( IsMultiLine() && vkey == VK_RETURN )
1780 return false;
1781 // fall through
1782 case 2:
1783 break;
1784
1785 case 1:
1786 // either Ctrl or Shift pressed
1787 if ( ctrl )
1788 {
1789 switch ( vkey )
1790 {
1791 case 'C':
1792 case 'V':
1793 case 'X':
1794 case VK_INSERT:
1795 case VK_DELETE:
1796 case VK_HOME:
1797 case VK_END:
1798 return false;
1799 }
1800 }
1801 else // Shift is pressed
1802 {
1803 if ( vkey == VK_INSERT || vkey == VK_DELETE )
1804 return false;
1805 }
1806 }
1807 }
1808 }
1809
1810 return wxControl::MSWShouldPreProcessMessage(msg);
1811 }
1812
1813 void wxTextCtrl::OnChar(wxKeyEvent& event)
1814 {
1815 switch ( event.GetKeyCode() )
1816 {
1817 case WXK_RETURN:
1818 {
1819 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1820 InitCommandEvent(event);
1821 event.SetString(GetValue());
1822 if ( HandleWindowEvent(event) )
1823 if ( !HasFlag(wxTE_MULTILINE) )
1824 return;
1825 //else: multiline controls need Enter for themselves
1826 }
1827 break;
1828
1829 case WXK_TAB:
1830 // ok, so this is getting absolutely ridiculous but I don't see
1831 // any other way to fix this bug: when a multiline text control is
1832 // inside a wxFrame, we need to generate the navigation event as
1833 // otherwise nothing happens at all, but when the same control is
1834 // created inside a dialog, IsDialogMessage() *does* switch focus
1835 // all by itself and so if we do it here as well, it is advanced
1836 // twice and goes to the next control... to prevent this from
1837 // happening we're doing this ugly check, the logic being that if
1838 // we don't have focus then it had been already changed to the next
1839 // control
1840 //
1841 // the right thing to do would, of course, be to understand what
1842 // the hell is IsDialogMessage() doing but this is beyond my feeble
1843 // forces at the moment unfortunately
1844 if ( !(m_windowStyle & wxTE_PROCESS_TAB))
1845 {
1846 if ( FindFocus() == this )
1847 {
1848 int flags = 0;
1849 if (!event.ShiftDown())
1850 flags |= wxNavigationKeyEvent::IsForward ;
1851 if (event.ControlDown())
1852 flags |= wxNavigationKeyEvent::WinChange ;
1853 if (Navigate(flags))
1854 return;
1855 }
1856 }
1857 else
1858 {
1859 // Insert tab since calling the default Windows handler
1860 // doesn't seem to do it
1861 WriteText(wxT("\t"));
1862 return;
1863 }
1864 break;
1865 }
1866
1867 // no, we didn't process it
1868 event.Skip();
1869 }
1870
1871 void wxTextCtrl::OnKeyDown(wxKeyEvent& event)
1872 {
1873 // richedit control doesn't send WM_PASTE, WM_CUT and WM_COPY messages
1874 // when Ctrl-V, X or C is pressed and this prevents wxClipboardTextEvent
1875 // from working. So we work around it by intercepting these shortcuts
1876 // ourselves and emitting clipboard events (which richedit will handle,
1877 // so everything works as before, including pasting of rich text):
1878 if ( event.GetModifiers() == wxMOD_CONTROL && IsRich() )
1879 {
1880 switch ( event.GetKeyCode() )
1881 {
1882 case 'C':
1883 Copy();
1884 return;
1885 case 'X':
1886 Cut();
1887 return;
1888 case 'V':
1889 Paste();
1890 return;
1891 default:
1892 break;
1893 }
1894 }
1895
1896 // no, we didn't process it
1897 event.Skip();
1898 }
1899
1900 WXLRESULT wxTextCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
1901 {
1902 WXLRESULT lRc = wxTextCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
1903
1904 switch ( nMsg )
1905 {
1906 case WM_GETDLGCODE:
1907 {
1908 // we always want the chars and the arrows: the arrows for
1909 // navigation and the chars because we want Ctrl-C to work even
1910 // in a read only control
1911 long lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
1912
1913 if ( IsEditable() )
1914 {
1915 // we may have several different cases:
1916 // 1. normal: both TAB and ENTER are used for navigation
1917 // 2. ctrl wants TAB for itself: ENTER is used to pass to
1918 // the next control in the dialog
1919 // 3. ctrl wants ENTER for itself: TAB is used for dialog
1920 // navigation
1921 // 4. ctrl wants both TAB and ENTER: Ctrl-ENTER is used to
1922 // go to the next control (we need some way to do it)
1923
1924 // multiline controls should always get ENTER for themselves
1925 if ( HasFlag(wxTE_PROCESS_ENTER) || HasFlag(wxTE_MULTILINE) )
1926 lDlgCode |= DLGC_WANTMESSAGE;
1927
1928 if ( HasFlag(wxTE_PROCESS_TAB) )
1929 lDlgCode |= DLGC_WANTTAB;
1930
1931 lRc |= lDlgCode;
1932 }
1933 else // !editable
1934 {
1935 // NB: use "=", not "|=" as the base class version returns
1936 // the same flags in the disabled state as usual (i.e.
1937 // including DLGC_WANTMESSAGE). This is strange (how
1938 // does it work in the native Win32 apps?) but for now
1939 // live with it.
1940 lRc = lDlgCode;
1941 }
1942 }
1943 break;
1944
1945 #if wxUSE_MENUS
1946 case WM_SETCURSOR:
1947 // rich text controls seem to have a bug and don't change the
1948 // cursor to the standard arrow one from the I-beam cursor usually
1949 // used by them even when a popup menu is shown (this works fine
1950 // for plain EDIT controls though), so explicitly work around this
1951 if ( IsRich() )
1952 {
1953 extern wxMenu *wxCurrentPopupMenu;
1954 if ( wxCurrentPopupMenu &&
1955 wxCurrentPopupMenu->GetInvokingWindow() == this )
1956 ::SetCursor(GetHcursorOf(*wxSTANDARD_CURSOR));
1957 }
1958 #endif // wxUSE_MENUS
1959 }
1960
1961 return lRc;
1962 }
1963
1964 // ----------------------------------------------------------------------------
1965 // text control event processing
1966 // ----------------------------------------------------------------------------
1967
1968 bool wxTextCtrl::SendUpdateEvent()
1969 {
1970 switch ( m_updatesCount )
1971 {
1972 case 0:
1973 // remember that we've got an update
1974 m_updatesCount++;
1975 break;
1976
1977 case 1:
1978 // we had already sent one event since the last control modification
1979 return false;
1980
1981 default:
1982 wxFAIL_MSG( wxT("unexpected wxTextCtrl::m_updatesCount value") );
1983 // fall through
1984
1985 case -1:
1986 // we hadn't updated the control ourselves, this event comes from
1987 // the user, don't need to ignore it nor update the count
1988 break;
1989
1990 case -2:
1991 // the control was updated programmatically and we do NOT want to
1992 // send events
1993 return false;
1994 }
1995
1996 return SendTextUpdatedEvent();
1997 }
1998
1999 bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
2000 {
2001 switch ( param )
2002 {
2003 case EN_CHANGE:
2004 SendUpdateEvent();
2005 break;
2006
2007 case EN_MAXTEXT:
2008 // the text size limit has been hit -- try to increase it
2009 if ( !AdjustSpaceLimit() )
2010 {
2011 wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, m_windowId);
2012 InitCommandEvent(event);
2013 event.SetString(GetValue());
2014 ProcessCommand(event);
2015 }
2016 break;
2017
2018 // the other edit notification messages are not processed (or, in
2019 // the case of EN_{SET/KILL}FOCUS were already handled at WM_SET/
2020 // KILLFOCUS level)
2021 default:
2022 return false;
2023 }
2024
2025 // processed
2026 return true;
2027 }
2028
2029 WXHBRUSH wxTextCtrl::MSWControlColor(WXHDC hDC, WXHWND hWnd)
2030 {
2031 if ( !IsEnabled() && !HasFlag(wxTE_MULTILINE) )
2032 return MSWControlColorDisabled(hDC);
2033
2034 return wxTextCtrlBase::MSWControlColor(hDC, hWnd);
2035 }
2036
2037 bool wxTextCtrl::HasSpaceLimit(unsigned int *len) const
2038 {
2039 // HACK: we try to automatically extend the limit for the amount of text
2040 // to allow (interactively) entering more than 64Kb of text under
2041 // Win9x but we shouldn't reset the text limit which was previously
2042 // set explicitly with SetMaxLength()
2043 //
2044 // Unfortunately there is no EM_GETLIMITTEXTSETBYUSER and so we don't
2045 // know the limit we set (if any). We could solve this by storing the
2046 // limit we set in wxTextCtrl but to save space we prefer to simply
2047 // test here the actual limit value: we consider that SetMaxLength()
2048 // can only be called for small values while EN_MAXTEXT is only sent
2049 // for large values (in practice the default limit seems to be 30000
2050 // but make it smaller just to be on the safe side)
2051 *len = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
2052 return *len < 10001;
2053
2054 }
2055
2056 bool wxTextCtrl::AdjustSpaceLimit()
2057 {
2058 unsigned int limit;
2059 if ( HasSpaceLimit(&limit) )
2060 return false;
2061
2062 unsigned int len = ::GetWindowTextLength(GetHwnd());
2063 if ( len >= limit )
2064 {
2065 // increment in 32Kb chunks
2066 SetMaxLength(len + 0x8000);
2067 }
2068
2069 // we changed the limit
2070 return true;
2071 }
2072
2073 bool wxTextCtrl::AcceptsFocusFromKeyboard() const
2074 {
2075 // we don't want focus if we can't be edited unless we're a multiline
2076 // control because then it might be still nice to get focus from keyboard
2077 // to be able to scroll it without mouse
2078 return (IsEditable() || IsMultiLine()) && wxControl::AcceptsFocus();
2079 }
2080
2081 wxSize wxTextCtrl::DoGetBestSize() const
2082 {
2083 int cx, cy;
2084 wxGetCharSize(GetHWND(), &cx, &cy, GetFont());
2085
2086 int wText = DEFAULT_ITEM_WIDTH;
2087
2088 int hText = cy;
2089 if ( m_windowStyle & wxTE_MULTILINE )
2090 {
2091 hText *= wxMax(wxMin(GetNumberOfLines(), 10), 2);
2092 }
2093 //else: for single line control everything is ok
2094
2095 // we have to add the adjustments for the control height only once, not
2096 // once per line, so do it after multiplication above
2097 hText += EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy) - cy;
2098
2099 return wxSize(wText, hText);
2100 }
2101
2102 // ----------------------------------------------------------------------------
2103 // standard handlers for standard edit menu events
2104 // ----------------------------------------------------------------------------
2105
2106 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
2107 {
2108 Cut();
2109 }
2110
2111 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
2112 {
2113 Copy();
2114 }
2115
2116 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
2117 {
2118 Paste();
2119 }
2120
2121 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
2122 {
2123 Undo();
2124 }
2125
2126 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
2127 {
2128 Redo();
2129 }
2130
2131 void wxTextCtrl::OnDelete(wxCommandEvent& WXUNUSED(event))
2132 {
2133 RemoveSelection();
2134 }
2135
2136 void wxTextCtrl::OnSelectAll(wxCommandEvent& WXUNUSED(event))
2137 {
2138 SelectAll();
2139 }
2140
2141 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
2142 {
2143 event.Enable( CanCut() );
2144 }
2145
2146 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
2147 {
2148 event.Enable( CanCopy() );
2149 }
2150
2151 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
2152 {
2153 event.Enable( CanPaste() );
2154 }
2155
2156 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
2157 {
2158 event.Enable( CanUndo() );
2159 }
2160
2161 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
2162 {
2163 event.Enable( CanRedo() );
2164 }
2165
2166 void wxTextCtrl::OnUpdateDelete(wxUpdateUIEvent& event)
2167 {
2168 event.Enable( HasSelection() && IsEditable() );
2169 }
2170
2171 void wxTextCtrl::OnUpdateSelectAll(wxUpdateUIEvent& event)
2172 {
2173 event.Enable( !IsEmpty() );
2174 }
2175
2176 void wxTextCtrl::OnContextMenu(wxContextMenuEvent& event)
2177 {
2178 #if wxUSE_RICHEDIT
2179 if (IsRich())
2180 {
2181 if (!m_privateContextMenu)
2182 {
2183 m_privateContextMenu = new wxMenu;
2184 m_privateContextMenu->Append(wxID_UNDO, _("&Undo"));
2185 m_privateContextMenu->Append(wxID_REDO, _("&Redo"));
2186 m_privateContextMenu->AppendSeparator();
2187 m_privateContextMenu->Append(wxID_CUT, _("Cu&t"));
2188 m_privateContextMenu->Append(wxID_COPY, _("&Copy"));
2189 m_privateContextMenu->Append(wxID_PASTE, _("&Paste"));
2190 m_privateContextMenu->Append(wxID_CLEAR, _("&Delete"));
2191 m_privateContextMenu->AppendSeparator();
2192 m_privateContextMenu->Append(wxID_SELECTALL, _("Select &All"));
2193 }
2194 PopupMenu(m_privateContextMenu);
2195 return;
2196 }
2197 else
2198 #endif
2199 event.Skip();
2200 }
2201
2202 void wxTextCtrl::OnSetFocus(wxFocusEvent& event)
2203 {
2204 // be sure the caret remains invisible if the user had hidden it
2205 if ( !m_isNativeCaretShown )
2206 {
2207 ::HideCaret(GetHwnd());
2208 }
2209
2210 event.Skip();
2211 }
2212
2213 // the rest of the file only deals with the rich edit controls
2214 #if wxUSE_RICHEDIT
2215
2216 // ----------------------------------------------------------------------------
2217 // EN_LINK processing
2218 // ----------------------------------------------------------------------------
2219
2220 bool wxTextCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
2221 {
2222 NMHDR *hdr = (NMHDR* )lParam;
2223 switch ( hdr->code )
2224 {
2225 case EN_MSGFILTER:
2226 {
2227 const MSGFILTER *msgf = (MSGFILTER *)lParam;
2228 UINT msg = msgf->msg;
2229
2230 // this is a bit crazy but richedit 1.0 sends us all mouse
2231 // events _except_ WM_LBUTTONUP (don't ask me why) so we have
2232 // generate the wxWin events for this message manually
2233 //
2234 // NB: in fact, this is still not totally correct as it does
2235 // send us WM_LBUTTONUP if the selection was cleared by the
2236 // last click -- so currently we get 2 events in this case,
2237 // but as I don't see any obvious way to check for this I
2238 // leave this code in place because it's still better than
2239 // not getting left up events at all
2240 if ( msg == WM_LBUTTONUP )
2241 {
2242 WXUINT flags = msgf->wParam;
2243 int x = GET_X_LPARAM(msgf->lParam),
2244 y = GET_Y_LPARAM(msgf->lParam);
2245
2246 HandleMouseEvent(msg, x, y, flags);
2247 }
2248 }
2249
2250 // return true to process the event (and false to ignore it)
2251 return true;
2252
2253 case EN_LINK:
2254 {
2255 const ENLINK *enlink = (ENLINK *)hdr;
2256
2257 switch ( enlink->msg )
2258 {
2259 case WM_SETCURSOR:
2260 // ok, so it is hardcoded - do we really nee to
2261 // customize it?
2262 {
2263 wxCursor cur(wxCURSOR_HAND);
2264 ::SetCursor(GetHcursorOf(cur));
2265 *result = TRUE;
2266 break;
2267 }
2268
2269 case WM_MOUSEMOVE:
2270 case WM_LBUTTONDOWN:
2271 case WM_LBUTTONUP:
2272 case WM_LBUTTONDBLCLK:
2273 case WM_RBUTTONDOWN:
2274 case WM_RBUTTONUP:
2275 case WM_RBUTTONDBLCLK:
2276 // send a mouse event
2277 {
2278 static const wxEventType eventsMouse[] =
2279 {
2280 wxEVT_MOTION,
2281 wxEVT_LEFT_DOWN,
2282 wxEVT_LEFT_UP,
2283 wxEVT_LEFT_DCLICK,
2284 wxEVT_RIGHT_DOWN,
2285 wxEVT_RIGHT_UP,
2286 wxEVT_RIGHT_DCLICK,
2287 };
2288
2289 // the event ids are consecutive
2290 wxMouseEvent
2291 evtMouse(eventsMouse[enlink->msg - WM_MOUSEMOVE]);
2292
2293 InitMouseEvent(evtMouse,
2294 GET_X_LPARAM(enlink->lParam),
2295 GET_Y_LPARAM(enlink->lParam),
2296 enlink->wParam);
2297
2298 wxTextUrlEvent event(m_windowId, evtMouse,
2299 enlink->chrg.cpMin,
2300 enlink->chrg.cpMax);
2301
2302 InitCommandEvent(event);
2303
2304 *result = ProcessCommand(event);
2305 }
2306 break;
2307 }
2308 }
2309 return true;
2310 }
2311
2312 // not processed, leave it to the base class
2313 return wxTextCtrlBase::MSWOnNotify(idCtrl, lParam, result);
2314 }
2315
2316 #if wxUSE_DRAG_AND_DROP
2317
2318 void wxTextCtrl::SetDropTarget(wxDropTarget *dropTarget)
2319 {
2320 if ( m_dropTarget == wxRICHTEXT_DEFAULT_DROPTARGET )
2321 {
2322 // get rid of the built-in drop target
2323 ::RevokeDragDrop(GetHwnd());
2324 m_dropTarget = NULL;
2325 }
2326
2327 wxTextCtrlBase::SetDropTarget(dropTarget);
2328 }
2329
2330 #endif // wxUSE_DRAG_AND_DROP
2331
2332 // ----------------------------------------------------------------------------
2333 // colour setting for the rich edit controls
2334 // ----------------------------------------------------------------------------
2335
2336 bool wxTextCtrl::SetBackgroundColour(const wxColour& colour)
2337 {
2338 if ( !wxTextCtrlBase::SetBackgroundColour(colour) )
2339 {
2340 // colour didn't really change
2341 return false;
2342 }
2343
2344 if ( IsRich() )
2345 {
2346 // rich edit doesn't use WM_CTLCOLOR, hence we need to send
2347 // EM_SETBKGNDCOLOR additionally
2348 ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour));
2349 }
2350
2351 return true;
2352 }
2353
2354 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
2355 {
2356 if ( !wxTextCtrlBase::SetForegroundColour(colour) )
2357 {
2358 // colour didn't really change
2359 return false;
2360 }
2361
2362 if ( IsRich() )
2363 {
2364 // change the colour of everything
2365 CHARFORMAT cf;
2366 wxZeroMemory(cf);
2367 cf.cbSize = sizeof(cf);
2368 cf.dwMask = CFM_COLOR;
2369 cf.crTextColor = wxColourToRGB(colour);
2370 ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf);
2371 }
2372
2373 return true;
2374 }
2375
2376 // ----------------------------------------------------------------------------
2377 // styling support for rich edit controls
2378 // ----------------------------------------------------------------------------
2379
2380 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
2381 {
2382 if ( !IsRich() )
2383 {
2384 // can't do it with normal text control
2385 return false;
2386 }
2387
2388 // the richedit 1.0 doesn't handle setting background colour, so don't
2389 // even try to do anything if it's the only thing we want to change
2390 if ( m_verRichEdit == 1 && !style.HasFont() && !style.HasTextColour() &&
2391 !style.HasLeftIndent() && !style.HasRightIndent() && !style.HasAlignment() &&
2392 !style.HasTabs() )
2393 {
2394 // nothing to do: return true if there was really nothing to do and
2395 // false if we failed to set bg colour
2396 return !style.HasBackgroundColour();
2397 }
2398
2399 // order the range if needed
2400 if ( start > end )
2401 {
2402 long tmp = start;
2403 start = end;
2404 end = tmp;
2405 }
2406
2407 // we can only change the format of the selection, so select the range we
2408 // want and restore the old selection later
2409 long startOld, endOld;
2410 GetSelection(&startOld, &endOld);
2411
2412 // but do we really have to change the selection?
2413 bool changeSel = start != startOld || end != endOld;
2414
2415 if ( changeSel )
2416 {
2417 DoSetSelection(start, end, SetSel_NoScroll);
2418 }
2419
2420 // initialize CHARFORMAT struct
2421 #if wxUSE_RICHEDIT2
2422 CHARFORMAT2 cf;
2423 #else
2424 CHARFORMAT cf;
2425 #endif
2426
2427 wxZeroMemory(cf);
2428
2429 // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2430 // CHARFORMAT in that case
2431 #if wxUSE_RICHEDIT2
2432 if ( m_verRichEdit == 1 )
2433 {
2434 // this is the only thing the control is going to grok
2435 cf.cbSize = sizeof(CHARFORMAT);
2436 }
2437 else
2438 #endif
2439 {
2440 // CHARFORMAT or CHARFORMAT2
2441 cf.cbSize = sizeof(cf);
2442 }
2443
2444 if ( style.HasFont() )
2445 {
2446 // VZ: CFM_CHARSET doesn't seem to do anything at all in RichEdit 2.0
2447 // but using it doesn't seem to hurt neither so leaving it for now
2448
2449 cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET |
2450 CFM_ITALIC | CFM_BOLD | CFM_UNDERLINE;
2451
2452 // fill in data from LOGFONT but recalculate lfHeight because we need
2453 // the real height in twips and not the negative number which
2454 // wxFillLogFont() returns (this is correct in general and works with
2455 // the Windows font mapper, but not here)
2456
2457 wxFont font(style.GetFont());
2458
2459 LOGFONT lf;
2460 wxFillLogFont(&lf, &font);
2461 cf.yHeight = 20*font.GetPointSize(); // 1 pt = 20 twips
2462 cf.bCharSet = lf.lfCharSet;
2463 cf.bPitchAndFamily = lf.lfPitchAndFamily;
2464 wxStrlcpy(cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName));
2465
2466 // also deal with underline/italic/bold attributes: note that we must
2467 // always set CFM_ITALIC &c bits in dwMask, even if we don't set the
2468 // style to allow clearing it
2469 if ( lf.lfItalic )
2470 {
2471 cf.dwEffects |= CFE_ITALIC;
2472 }
2473
2474 if ( lf.lfWeight == FW_BOLD )
2475 {
2476 cf.dwEffects |= CFE_BOLD;
2477 }
2478
2479 if ( lf.lfUnderline )
2480 {
2481 cf.dwEffects |= CFE_UNDERLINE;
2482 }
2483
2484 // strikeout fonts are not supported by wxWidgets
2485 }
2486
2487 if ( style.HasTextColour() )
2488 {
2489 cf.dwMask |= CFM_COLOR;
2490 cf.crTextColor = wxColourToRGB(style.GetTextColour());
2491 }
2492
2493 #if wxUSE_RICHEDIT2
2494 if ( m_verRichEdit != 1 && style.HasBackgroundColour() )
2495 {
2496 cf.dwMask |= CFM_BACKCOLOR;
2497 cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
2498 }
2499 #endif // wxUSE_RICHEDIT2
2500
2501 // do format the selection
2502 bool ok = ::SendMessage(GetHwnd(), EM_SETCHARFORMAT,
2503 SCF_SELECTION, (LPARAM)&cf) != 0;
2504 if ( !ok )
2505 {
2506 wxLogDebug(wxT("SendMessage(EM_SETCHARFORMAT, SCF_SELECTION) failed"));
2507 }
2508
2509 // now do the paragraph formatting
2510 PARAFORMAT2 pf;
2511 wxZeroMemory(pf);
2512 // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2513 // PARAFORMAT in that case
2514 #if wxUSE_RICHEDIT2
2515 if ( m_verRichEdit == 1 )
2516 {
2517 // this is the only thing the control is going to grok
2518 pf.cbSize = sizeof(PARAFORMAT);
2519 }
2520 else
2521 #endif
2522 {
2523 // PARAFORMAT or PARAFORMAT2
2524 pf.cbSize = sizeof(pf);
2525 }
2526
2527 if (style.HasAlignment())
2528 {
2529 pf.dwMask |= PFM_ALIGNMENT;
2530 if (style.GetAlignment() == wxTEXT_ALIGNMENT_RIGHT)
2531 pf.wAlignment = PFA_RIGHT;
2532 else if (style.GetAlignment() == wxTEXT_ALIGNMENT_CENTRE)
2533 pf.wAlignment = PFA_CENTER;
2534 else if (style.GetAlignment() == wxTEXT_ALIGNMENT_JUSTIFIED)
2535 pf.wAlignment = PFA_JUSTIFY;
2536 else
2537 pf.wAlignment = PFA_LEFT;
2538 }
2539
2540 if (style.HasLeftIndent())
2541 {
2542 pf.dwMask |= PFM_STARTINDENT | PFM_OFFSET;
2543
2544 // Convert from 1/10 mm to TWIPS
2545 pf.dxStartIndent = (int) (((double) style.GetLeftIndent()) * mm2twips / 10.0) ;
2546 pf.dxOffset = (int) (((double) style.GetLeftSubIndent()) * mm2twips / 10.0) ;
2547 }
2548
2549 if (style.HasRightIndent())
2550 {
2551 pf.dwMask |= PFM_RIGHTINDENT;
2552
2553 // Convert from 1/10 mm to TWIPS
2554 pf.dxRightIndent = (int) (((double) style.GetRightIndent()) * mm2twips / 10.0) ;
2555 }
2556
2557 if (style.HasTabs())
2558 {
2559 pf.dwMask |= PFM_TABSTOPS;
2560
2561 const wxArrayInt& tabs = style.GetTabs();
2562
2563 pf.cTabCount = (SHORT)wxMin(tabs.GetCount(), MAX_TAB_STOPS);
2564 size_t i;
2565 for (i = 0; i < (size_t) pf.cTabCount; i++)
2566 {
2567 // Convert from 1/10 mm to TWIPS
2568 pf.rgxTabs[i] = (int) (((double) tabs[i]) * mm2twips / 10.0) ;
2569 }
2570 }
2571
2572 #if wxUSE_RICHEDIT2
2573 if ( m_verRichEdit > 1 )
2574 {
2575 if ( wxTheApp->GetLayoutDirection() == wxLayout_RightToLeft )
2576 {
2577 // Use RTL paragraphs in RTL mode to get proper layout
2578 pf.dwMask |= PFM_RTLPARA;
2579 pf.wEffects |= PFE_RTLPARA;
2580 }
2581 }
2582 #endif // wxUSE_RICHEDIT2
2583
2584 if ( pf.dwMask )
2585 {
2586 // do format the selection
2587 bool ok = ::SendMessage(GetHwnd(), EM_SETPARAFORMAT,
2588 0, (LPARAM) &pf) != 0;
2589 if ( !ok )
2590 {
2591 wxLogDebug(wxT("SendMessage(EM_SETPARAFORMAT, 0) failed"));
2592 }
2593 }
2594
2595 if ( changeSel )
2596 {
2597 // restore the original selection
2598 DoSetSelection(startOld, endOld, SetSel_NoScroll);
2599 }
2600
2601 return ok;
2602 }
2603
2604 bool wxTextCtrl::SetDefaultStyle(const wxTextAttr& style)
2605 {
2606 if ( !wxTextCtrlBase::SetDefaultStyle(style) )
2607 return false;
2608
2609 if ( IsEditable() )
2610 {
2611 // we have to do this or the style wouldn't apply for the text typed by
2612 // the user
2613 wxTextPos posLast = GetLastPosition();
2614 SetStyle(posLast, posLast, m_defaultStyle);
2615 }
2616
2617 return true;
2618 }
2619
2620 bool wxTextCtrl::GetStyle(long position, wxTextAttr& style)
2621 {
2622 if ( !IsRich() )
2623 {
2624 // can't do it with normal text control
2625 return false;
2626 }
2627
2628 // initialize CHARFORMAT struct
2629 #if wxUSE_RICHEDIT2
2630 CHARFORMAT2 cf;
2631 #else
2632 CHARFORMAT cf;
2633 #endif
2634
2635 wxZeroMemory(cf);
2636
2637 // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2638 // CHARFORMAT in that case
2639 #if wxUSE_RICHEDIT2
2640 if ( m_verRichEdit == 1 )
2641 {
2642 // this is the only thing the control is going to grok
2643 cf.cbSize = sizeof(CHARFORMAT);
2644 }
2645 else
2646 #endif
2647 {
2648 // CHARFORMAT or CHARFORMAT2
2649 cf.cbSize = sizeof(cf);
2650 }
2651 // we can only change the format of the selection, so select the range we
2652 // want and restore the old selection later
2653 long startOld, endOld;
2654 GetSelection(&startOld, &endOld);
2655
2656 // but do we really have to change the selection?
2657 bool changeSel = position != startOld || position != endOld;
2658
2659 if ( changeSel )
2660 {
2661 DoSetSelection(position, position + 1, SetSel_NoScroll);
2662 }
2663
2664 // get the selection formatting
2665 (void) ::SendMessage(GetHwnd(), EM_GETCHARFORMAT,
2666 SCF_SELECTION, (LPARAM)&cf) ;
2667
2668
2669 LOGFONT lf;
2670 lf.lfHeight = cf.yHeight;
2671 lf.lfWidth = 0;
2672 lf.lfCharSet = ANSI_CHARSET; // FIXME: how to get correct charset?
2673 lf.lfClipPrecision = 0;
2674 lf.lfEscapement = 0;
2675 wxStrcpy(lf.lfFaceName, cf.szFaceName);
2676
2677 //NOTE: we _MUST_ set each of these values to _something_ since we
2678 //do not call wxZeroMemory on the LOGFONT lf
2679 if (cf.dwEffects & CFE_ITALIC)
2680 lf.lfItalic = TRUE;
2681 else
2682 lf.lfItalic = FALSE;
2683
2684 lf.lfOrientation = 0;
2685 lf.lfPitchAndFamily = cf.bPitchAndFamily;
2686 lf.lfQuality = 0;
2687
2688 if (cf.dwEffects & CFE_STRIKEOUT)
2689 lf.lfStrikeOut = TRUE;
2690 else
2691 lf.lfStrikeOut = FALSE;
2692
2693 if (cf.dwEffects & CFE_UNDERLINE)
2694 lf.lfUnderline = TRUE;
2695 else
2696 lf.lfUnderline = FALSE;
2697
2698 if (cf.dwEffects & CFE_BOLD)
2699 lf.lfWeight = FW_BOLD;
2700 else
2701 lf.lfWeight = FW_NORMAL;
2702
2703 wxFont font = wxCreateFontFromLogFont(& lf);
2704 if (font.Ok())
2705 {
2706 style.SetFont(font);
2707 }
2708 style.SetTextColour(wxColour(cf.crTextColor));
2709
2710 #if wxUSE_RICHEDIT2
2711 if ( m_verRichEdit != 1 )
2712 {
2713 // cf.dwMask |= CFM_BACKCOLOR;
2714 style.SetBackgroundColour(wxColour(cf.crBackColor));
2715 }
2716 #endif // wxUSE_RICHEDIT2
2717
2718 // now get the paragraph formatting
2719 PARAFORMAT2 pf;
2720 wxZeroMemory(pf);
2721 // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2722 // PARAFORMAT in that case
2723 #if wxUSE_RICHEDIT2
2724 if ( m_verRichEdit == 1 )
2725 {
2726 // this is the only thing the control is going to grok
2727 pf.cbSize = sizeof(PARAFORMAT);
2728 }
2729 else
2730 #endif
2731 {
2732 // PARAFORMAT or PARAFORMAT2
2733 pf.cbSize = sizeof(pf);
2734 }
2735
2736 // do format the selection
2737 (void) ::SendMessage(GetHwnd(), EM_GETPARAFORMAT, 0, (LPARAM) &pf) ;
2738
2739 style.SetLeftIndent( (int) ((double) pf.dxStartIndent * twips2mm * 10.0), (int) ((double) pf.dxOffset * twips2mm * 10.0) );
2740 style.SetRightIndent( (int) ((double) pf.dxRightIndent * twips2mm * 10.0) );
2741
2742 if (pf.wAlignment == PFA_CENTER)
2743 style.SetAlignment(wxTEXT_ALIGNMENT_CENTRE);
2744 else if (pf.wAlignment == PFA_RIGHT)
2745 style.SetAlignment(wxTEXT_ALIGNMENT_RIGHT);
2746 else if (pf.wAlignment == PFA_JUSTIFY)
2747 style.SetAlignment(wxTEXT_ALIGNMENT_JUSTIFIED);
2748 else
2749 style.SetAlignment(wxTEXT_ALIGNMENT_LEFT);
2750
2751 wxArrayInt tabStops;
2752 size_t i;
2753 for (i = 0; i < (size_t) pf.cTabCount; i++)
2754 {
2755 tabStops.Add( (int) ((double) (pf.rgxTabs[i] & 0xFFFF) * twips2mm * 10.0) );
2756 }
2757
2758 if ( changeSel )
2759 {
2760 // restore the original selection
2761 DoSetSelection(startOld, endOld, SetSel_NoScroll);
2762 }
2763
2764 return true;
2765 }
2766
2767 // ----------------------------------------------------------------------------
2768 // wxRichEditModule
2769 // ----------------------------------------------------------------------------
2770
2771 static const HINSTANCE INVALID_HINSTANCE = (HINSTANCE)-1;
2772
2773 bool wxRichEditModule::OnInit()
2774 {
2775 // don't do anything - we will load it when needed
2776 return true;
2777 }
2778
2779 void wxRichEditModule::OnExit()
2780 {
2781 for ( size_t i = 0; i < WXSIZEOF(ms_hRichEdit); i++ )
2782 {
2783 if ( ms_hRichEdit[i] && ms_hRichEdit[i] != INVALID_HINSTANCE )
2784 {
2785 ::FreeLibrary(ms_hRichEdit[i]);
2786 ms_hRichEdit[i] = NULL;
2787 }
2788 }
2789 #if wxUSE_INKEDIT
2790 if (ms_inkEditLib.IsLoaded())
2791 ms_inkEditLib.Unload();
2792 #endif
2793 }
2794
2795 /* static */
2796 bool wxRichEditModule::Load(Version version)
2797 {
2798 if ( ms_hRichEdit[version] == INVALID_HINSTANCE )
2799 {
2800 // we had already tried to load it and failed
2801 return false;
2802 }
2803
2804 if ( ms_hRichEdit[version] )
2805 {
2806 // we've already got this one
2807 return true;
2808 }
2809
2810 static const wxChar *const dllnames[] =
2811 {
2812 wxT("riched32"),
2813 wxT("riched20"),
2814 wxT("msftedit"),
2815 };
2816
2817 wxCOMPILE_TIME_ASSERT( WXSIZEOF(dllnames) == Version_Max,
2818 RichEditDllNamesVersionsMismatch );
2819
2820 ms_hRichEdit[version] = ::LoadLibrary(dllnames[version]);
2821
2822 if ( !ms_hRichEdit[version] )
2823 {
2824 ms_hRichEdit[version] = INVALID_HINSTANCE;
2825
2826 return false;
2827 }
2828
2829 return true;
2830 }
2831
2832 #if wxUSE_INKEDIT
2833 // load the InkEdit library
2834 bool wxRichEditModule::LoadInkEdit()
2835 {
2836 if (ms_inkEditLibLoadAttemped)
2837 return ms_inkEditLib.IsLoaded();
2838
2839 ms_inkEditLibLoadAttemped = true;
2840
2841 wxLogNull logNull;
2842 return ms_inkEditLib.Load(wxT("inked"));
2843 }
2844 #endif // wxUSE_INKEDIT
2845
2846
2847 #endif // wxUSE_RICHEDIT
2848
2849 #endif // wxUSE_TEXTCTRL && !(__SMARTPHONE__ && __WXWINCE__)
wxWidgets (Impactor)