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changing ES_LEFT/CENTER/RIGHT styles only works for plain (not rich) controls and...
[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 #endif
41
42 #include "wx/sysopt.h"
43
44 #if wxUSE_CLIPBOARD
45 #include "wx/clipbrd.h"
46 #endif
47
48 #include "wx/textfile.h"
49
50 #include <windowsx.h>
51
52 #include "wx/msw/private.h"
53 #include "wx/msw/winundef.h"
54 #include "wx/msw/mslu.h"
55
56 #include <string.h>
57 #include <stdlib.h>
58
59 #ifndef __WXWINCE__
60 #include <sys/types.h>
61 #endif
62
63 #if wxUSE_RICHEDIT
64
65 #if wxUSE_INKEDIT
66 #include "wx/dynlib.h"
67 #endif
68
69 // old mingw32 has richedit stuff directly in windows.h and doesn't have
70 // richedit.h at all
71 #if !defined(__GNUWIN32_OLD__) || defined(__CYGWIN10__)
72 #include <richedit.h>
73 #endif
74
75 #endif // wxUSE_RICHEDIT
76
77 #include "wx/msw/missing.h"
78
79 // ----------------------------------------------------------------------------
80 // private classes
81 // ----------------------------------------------------------------------------
82
83 #if wxUSE_RICHEDIT
84
85 // this module initializes RichEdit DLL(s) if needed
86 class wxRichEditModule : public wxModule
87 {
88 public:
89 enum Version
90 {
91 Version_1, // riched32.dll
92 Version_2or3, // both use riched20.dll
93 Version_41, // msftedit.dll (XP SP1 and Windows 2003)
94 Version_Max
95 };
96
97 virtual bool OnInit();
98 virtual void OnExit();
99
100 // load the richedit DLL for the specified version of rich edit
101 static bool Load(Version version);
102
103 #if wxUSE_INKEDIT
104 // load the InkEdit library
105 static bool LoadInkEdit();
106 #endif
107
108 private:
109 // the handles to richedit 1.0 and 2.0 (or 3.0) DLLs
110 static HINSTANCE ms_hRichEdit[Version_Max];
111
112 #if wxUSE_INKEDIT
113 static wxDynamicLibrary ms_inkEditLib;
114 static bool ms_inkEditLibLoadAttemped;
115 #endif
116
117 DECLARE_DYNAMIC_CLASS(wxRichEditModule)
118 };
119
120 HINSTANCE wxRichEditModule::ms_hRichEdit[Version_Max] = { NULL, NULL, NULL };
121
122 #if wxUSE_INKEDIT
123 wxDynamicLibrary wxRichEditModule::ms_inkEditLib;
124 bool wxRichEditModule::ms_inkEditLibLoadAttemped = false;
125 #endif
126
127 IMPLEMENT_DYNAMIC_CLASS(wxRichEditModule, wxModule)
128
129 #endif // wxUSE_RICHEDIT
130
131 // a small class used to set m_updatesCount to 0 (to filter duplicate events if
132 // necessary) and to reset it back to -1 afterwards
133 class UpdatesCountFilter
134 {
135 public:
136 UpdatesCountFilter(int& count)
137 : m_count(count)
138 {
139 wxASSERT_MSG( m_count == -1 || m_count == -2,
140 _T("wrong initial m_updatesCount value") );
141
142 if (m_count != -2)
143 m_count = 0;
144 //else: we don't want to count how many update events we get as we're going
145 // to ignore all of them
146 }
147
148 ~UpdatesCountFilter()
149 {
150 m_count = -1;
151 }
152
153 // return true if an event has been received
154 bool GotUpdate() const
155 {
156 return m_count == 1;
157 }
158
159 private:
160 int& m_count;
161
162 DECLARE_NO_COPY_CLASS(UpdatesCountFilter)
163 };
164
165 // ----------------------------------------------------------------------------
166 // event tables and other macros
167 // ----------------------------------------------------------------------------
168
169 #if wxUSE_EXTENDED_RTTI
170 WX_DEFINE_FLAGS( wxTextCtrlStyle )
171
172 wxBEGIN_FLAGS( wxTextCtrlStyle )
173 // new style border flags, we put them first to
174 // use them for streaming out
175 wxFLAGS_MEMBER(wxBORDER_SIMPLE)
176 wxFLAGS_MEMBER(wxBORDER_SUNKEN)
177 wxFLAGS_MEMBER(wxBORDER_DOUBLE)
178 wxFLAGS_MEMBER(wxBORDER_RAISED)
179 wxFLAGS_MEMBER(wxBORDER_STATIC)
180 wxFLAGS_MEMBER(wxBORDER_NONE)
181
182 // old style border flags
183 wxFLAGS_MEMBER(wxSIMPLE_BORDER)
184 wxFLAGS_MEMBER(wxSUNKEN_BORDER)
185 wxFLAGS_MEMBER(wxDOUBLE_BORDER)
186 wxFLAGS_MEMBER(wxRAISED_BORDER)
187 wxFLAGS_MEMBER(wxSTATIC_BORDER)
188 wxFLAGS_MEMBER(wxBORDER)
189
190 // standard window styles
191 wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
192 wxFLAGS_MEMBER(wxCLIP_CHILDREN)
193 wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
194 wxFLAGS_MEMBER(wxWANTS_CHARS)
195 wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
196 wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
197 wxFLAGS_MEMBER(wxVSCROLL)
198 wxFLAGS_MEMBER(wxHSCROLL)
199
200 wxFLAGS_MEMBER(wxTE_PROCESS_ENTER)
201 wxFLAGS_MEMBER(wxTE_PROCESS_TAB)
202 wxFLAGS_MEMBER(wxTE_MULTILINE)
203 wxFLAGS_MEMBER(wxTE_PASSWORD)
204 wxFLAGS_MEMBER(wxTE_READONLY)
205 wxFLAGS_MEMBER(wxHSCROLL)
206 wxFLAGS_MEMBER(wxTE_RICH)
207 wxFLAGS_MEMBER(wxTE_RICH2)
208 wxFLAGS_MEMBER(wxTE_AUTO_URL)
209 wxFLAGS_MEMBER(wxTE_NOHIDESEL)
210 wxFLAGS_MEMBER(wxTE_LEFT)
211 wxFLAGS_MEMBER(wxTE_CENTRE)
212 wxFLAGS_MEMBER(wxTE_RIGHT)
213 wxFLAGS_MEMBER(wxTE_DONTWRAP)
214 wxFLAGS_MEMBER(wxTE_CHARWRAP)
215 wxFLAGS_MEMBER(wxTE_WORDWRAP)
216
217 wxEND_FLAGS( wxTextCtrlStyle )
218
219 IMPLEMENT_DYNAMIC_CLASS_XTI(wxTextCtrl, wxControl,"wx/textctrl.h")
220
221 wxBEGIN_PROPERTIES_TABLE(wxTextCtrl)
222 wxEVENT_PROPERTY( TextUpdated , wxEVT_COMMAND_TEXT_UPDATED , wxCommandEvent )
223 wxEVENT_PROPERTY( TextEnter , wxEVT_COMMAND_TEXT_ENTER , wxCommandEvent )
224
225 wxPROPERTY( Font , wxFont , SetFont , GetFont , EMPTY_MACROVALUE, 0 /*flags*/ , wxT("Helpstring") , wxT("group") )
226 wxPROPERTY( Value , wxString , SetValue, GetValue, wxString() , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
227 wxPROPERTY_FLAGS( WindowStyle , wxTextCtrlStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
228 wxEND_PROPERTIES_TABLE()
229
230 wxBEGIN_HANDLERS_TABLE(wxTextCtrl)
231 wxEND_HANDLERS_TABLE()
232
233 wxCONSTRUCTOR_6( wxTextCtrl , wxWindow* , Parent , wxWindowID , Id , wxString , Value , wxPoint , Position , wxSize , Size , long , WindowStyle)
234 #else
235 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxTextCtrlBase)
236 #endif
237
238
239 BEGIN_EVENT_TABLE(wxTextCtrl, wxTextCtrlBase)
240 EVT_CHAR(wxTextCtrl::OnChar)
241 EVT_DROP_FILES(wxTextCtrl::OnDropFiles)
242
243 #if wxUSE_RICHEDIT
244 EVT_CONTEXT_MENU(wxTextCtrl::OnContextMenu)
245 #endif
246
247 EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
248 EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
249 EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
250 EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
251 EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
252 EVT_MENU(wxID_CLEAR, wxTextCtrl::OnDelete)
253 EVT_MENU(wxID_SELECTALL, wxTextCtrl::OnSelectAll)
254
255 EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
256 EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
257 EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
258 EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
259 EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
260 EVT_UPDATE_UI(wxID_CLEAR, wxTextCtrl::OnUpdateDelete)
261 EVT_UPDATE_UI(wxID_SELECTALL, wxTextCtrl::OnUpdateSelectAll)
262
263 EVT_SET_FOCUS(wxTextCtrl::OnSetFocus)
264 END_EVENT_TABLE()
265
266 // ============================================================================
267 // implementation
268 // ============================================================================
269
270 // ----------------------------------------------------------------------------
271 // creation
272 // ----------------------------------------------------------------------------
273
274 void wxTextCtrl::Init()
275 {
276 #if wxUSE_RICHEDIT
277 m_verRichEdit = 0;
278 #endif // wxUSE_RICHEDIT
279
280 #if wxUSE_INKEDIT && wxUSE_RICHEDIT
281 m_isInkEdit = 0;
282 #endif
283
284 m_privateContextMenu = NULL;
285 m_updatesCount = -1;
286 m_isNativeCaretShown = true;
287 }
288
289 wxTextCtrl::~wxTextCtrl()
290 {
291 delete m_privateContextMenu;
292 }
293
294 bool wxTextCtrl::Create(wxWindow *parent,
295 wxWindowID id,
296 const wxString& value,
297 const wxPoint& pos,
298 const wxSize& size,
299 long style,
300 const wxValidator& validator,
301 const wxString& name)
302 {
303 #ifdef __WXWINCE__
304 if ((style & wxBORDER_MASK) == 0)
305 style |= wxBORDER_SIMPLE;
306 #endif
307
308 // base initialization
309 if ( !CreateControl(parent, id, pos, size, style, validator, name) )
310 return false;
311
312 if ( !MSWCreateText(value, pos, size) )
313 return false;
314
315 return true;
316 }
317
318 bool wxTextCtrl::MSWCreateText(const wxString& value,
319 const wxPoint& pos,
320 const wxSize& size)
321 {
322 // translate wxWin style flags to MSW ones
323 WXDWORD msStyle = MSWGetCreateWindowFlags();
324
325 // do create the control - either an EDIT or RICHEDIT
326 wxString windowClass = wxT("EDIT");
327
328 #if defined(__POCKETPC__) || defined(__SMARTPHONE__)
329 // A control that capitalizes the first letter
330 if ( HasFlag(wxTE_CAPITALIZE) )
331 windowClass = wxT("CAPEDIT");
332 #endif
333
334 #if wxUSE_RICHEDIT
335 if ( m_windowStyle & wxTE_AUTO_URL )
336 {
337 // automatic URL detection only works in RichEdit 2.0+
338 m_windowStyle |= wxTE_RICH2;
339 }
340
341 if ( m_windowStyle & wxTE_RICH2 )
342 {
343 // using richedit 2.0 implies using wxTE_RICH
344 m_windowStyle |= wxTE_RICH;
345 }
346
347 // we need to load the richedit DLL before creating the rich edit control
348 if ( m_windowStyle & wxTE_RICH )
349 {
350 // versions 2.0, 3.0 and 4.1 of rich edit are mostly compatible with
351 // each other but not with version 1.0, so we have separate flags for
352 // the version 1.0 and the others (and so m_verRichEdit may be 0 (plain
353 // EDIT control), 1 for version 1.0 or 2 for any higher version)
354 //
355 // notice that 1.0 has no Unicode support at all so in Unicode build we
356 // must use another version
357
358 #if wxUSE_UNICODE
359 m_verRichEdit = 2;
360 #else // !wxUSE_UNICODE
361 m_verRichEdit = m_windowStyle & wxTE_RICH2 ? 2 : 1;
362 #endif // wxUSE_UNICODE/!wxUSE_UNICODE
363
364 #if wxUSE_INKEDIT
365 // First test if we can load an ink edit control. Normally, all edit
366 // controls will be made ink edit controls if a tablet environment is
367 // found (or if msw.inkedit != 0 and the InkEd.dll is present).
368 // However, an application can veto ink edit controls by either specifying
369 // msw.inkedit = 0 or by removing wxTE_RICH[2] from the style.
370 //
371 if ((wxSystemSettings::HasFeature(wxSYS_TABLET_PRESENT) || wxSystemOptions::GetOptionInt(wxT("msw.inkedit")) != 0) &&
372 !(wxSystemOptions::HasOption(wxT("msw.inkedit")) && wxSystemOptions::GetOptionInt(wxT("msw.inkedit")) == 0))
373 {
374 if (wxRichEditModule::LoadInkEdit())
375 {
376 windowClass = INKEDIT_CLASS;
377
378 #if wxUSE_INKEDIT && wxUSE_RICHEDIT
379 m_isInkEdit = 1;
380 #endif
381
382 // Fake rich text version for other calls
383 m_verRichEdit = 2;
384 }
385 }
386 #endif
387
388 if (!IsInkEdit())
389 {
390 if ( m_verRichEdit == 2 )
391 {
392 if ( wxRichEditModule::Load(wxRichEditModule::Version_41) )
393 {
394 // yes, class name for version 4.1 really is 5.0
395 windowClass = _T("RICHEDIT50W");
396 }
397 else if ( wxRichEditModule::Load(wxRichEditModule::Version_2or3) )
398 {
399 windowClass = _T("RichEdit20")
400 #if wxUSE_UNICODE
401 _T("W");
402 #else // ANSI
403 _T("A");
404 #endif // Unicode/ANSI
405 }
406 else // failed to load msftedit.dll and riched20.dll
407 {
408 m_verRichEdit = 1;
409 }
410 }
411
412 if ( m_verRichEdit == 1 )
413 {
414 if ( wxRichEditModule::Load(wxRichEditModule::Version_1) )
415 {
416 windowClass = _T("RICHEDIT");
417 }
418 else // failed to load any richedit control DLL
419 {
420 // only give the error msg once if the DLL can't be loaded
421 static bool s_errorGiven = false; // MT ok as only used by GUI
422
423 if ( !s_errorGiven )
424 {
425 wxLogError(_("Impossible to create a rich edit control, using simple text control instead. Please reinstall riched32.dll"));
426
427 s_errorGiven = true;
428 }
429
430 m_verRichEdit = 0;
431 }
432 }
433 } // !useInkEdit
434 }
435 #endif // wxUSE_RICHEDIT
436
437 // we need to turn '\n's into "\r\n"s for the multiline controls
438 wxString valueWin;
439 if ( m_windowStyle & wxTE_MULTILINE )
440 {
441 valueWin = wxTextFile::Translate(value, wxTextFileType_Dos);
442 }
443 else // single line
444 {
445 valueWin = value;
446 }
447
448 if ( !MSWCreateControl(windowClass, msStyle, pos, size, valueWin) )
449 return false;
450
451 #if wxUSE_RICHEDIT
452 if (IsRich())
453 {
454 #if wxUSE_INKEDIT
455 if (IsInkEdit())
456 {
457 // Pass IEM_InsertText (0) as wParam, in order to have the ink always
458 // converted to text.
459 ::SendMessage(GetHwnd(), EM_SETINKINSERTMODE, 0, 0);
460
461 // Make sure the mouse can be used for input
462 ::SendMessage(GetHwnd(), EM_SETUSEMOUSEFORINPUT, 1, 0);
463 }
464 #endif
465
466 // enable the events we're interested in: we want to get EN_CHANGE as
467 // for the normal controls
468 LPARAM mask = ENM_CHANGE;
469
470 if (GetRichVersion() == 1 && !IsInkEdit())
471 {
472 // we also need EN_MSGFILTER for richedit 1.0 for the reasons
473 // explained in its handler
474 mask |= ENM_MOUSEEVENTS;
475
476 // we also need to force the appearance of the vertical scrollbar
477 // initially as otherwise the control doesn't refresh correctly
478 // after resize: but once the vertical scrollbar had been shown
479 // (even if it's subsequently hidden) it does
480 //
481 // this is clearly a bug and for now it has been only noticed under
482 // Windows XP, so if we're sure it works correctly under other
483 // systems we could do this only for XP
484 SetSize(-1, 1); // 1 is small enough to force vert scrollbar
485 SetInitialSize(size);
486 }
487 else if ( m_windowStyle & wxTE_AUTO_URL )
488 {
489 mask |= ENM_LINK;
490
491 ::SendMessage(GetHwnd(), EM_AUTOURLDETECT, TRUE, 0);
492 }
493
494 ::SendMessage(GetHwnd(), EM_SETEVENTMASK, 0, mask);
495 }
496 #endif // wxUSE_RICHEDIT
497
498 return true;
499 }
500
501 // Make sure the window style (etc.) reflects the HWND style (roughly)
502 void wxTextCtrl::AdoptAttributesFromHWND()
503 {
504 wxWindow::AdoptAttributesFromHWND();
505
506 HWND hWnd = GetHwnd();
507 long style = ::GetWindowLong(hWnd, GWL_STYLE);
508
509 // retrieve the style to see whether this is an edit or richedit ctrl
510 #if wxUSE_RICHEDIT
511 wxString classname = wxGetWindowClass(GetHWND());
512
513 if ( classname.IsSameAs(_T("EDIT"), false /* no case */) )
514 {
515 m_verRichEdit = 0;
516 }
517 else // rich edit?
518 {
519 wxChar c;
520 if ( wxSscanf(classname, _T("RichEdit%d0%c"), &m_verRichEdit, &c) != 2 )
521 {
522 wxLogDebug(_T("Unknown edit control '%s'."), classname.c_str());
523
524 m_verRichEdit = 0;
525 }
526 }
527 #endif // wxUSE_RICHEDIT
528
529 if (style & ES_MULTILINE)
530 m_windowStyle |= wxTE_MULTILINE;
531 if (style & ES_PASSWORD)
532 m_windowStyle |= wxTE_PASSWORD;
533 if (style & ES_READONLY)
534 m_windowStyle |= wxTE_READONLY;
535 if (style & ES_WANTRETURN)
536 m_windowStyle |= wxTE_PROCESS_ENTER;
537 if (style & ES_CENTER)
538 m_windowStyle |= wxTE_CENTRE;
539 if (style & ES_RIGHT)
540 m_windowStyle |= wxTE_RIGHT;
541 }
542
543 WXDWORD wxTextCtrl::MSWGetStyle(long style, WXDWORD *exstyle) const
544 {
545 long msStyle = wxControl::MSWGetStyle(style, exstyle);
546
547 // styles which we alaways add by default
548 if ( style & wxTE_MULTILINE )
549 {
550 msStyle |= ES_MULTILINE | ES_WANTRETURN;
551 if ( !(style & wxTE_NO_VSCROLL) )
552 {
553 // always adjust the vertical scrollbar automatically if we have it
554 msStyle |= WS_VSCROLL | ES_AUTOVSCROLL;
555
556 #if wxUSE_RICHEDIT
557 // we have to use this style for the rich edit controls because
558 // without it the vertical scrollbar never appears at all in
559 // richedit 3.0 because of our ECO_NOHIDESEL hack (search for it)
560 if ( style & wxTE_RICH2 )
561 {
562 msStyle |= ES_DISABLENOSCROLL;
563 }
564 #endif // wxUSE_RICHEDIT
565 }
566
567 style |= wxTE_PROCESS_ENTER;
568 }
569 else // !multiline
570 {
571 // there is really no reason to not have this style for single line
572 // text controls
573 msStyle |= ES_AUTOHSCROLL;
574 }
575
576 // note that wxTE_DONTWRAP is the same as wxHSCROLL so if we have a horz
577 // scrollbar, there is no wrapping -- which makes sense
578 if ( style & wxTE_DONTWRAP )
579 {
580 // automatically scroll the control horizontally as necessary
581 //
582 // NB: ES_AUTOHSCROLL is needed for richedit controls or they don't
583 // show horz scrollbar at all, even in spite of WS_HSCROLL, and as
584 // it doesn't seem to do any harm for plain edit controls, add it
585 // always
586 msStyle |= WS_HSCROLL | ES_AUTOHSCROLL;
587 }
588
589 if ( style & wxTE_READONLY )
590 msStyle |= ES_READONLY;
591
592 if ( style & wxTE_PASSWORD )
593 msStyle |= ES_PASSWORD;
594
595 if ( style & wxTE_NOHIDESEL )
596 msStyle |= ES_NOHIDESEL;
597
598 // note that we can't do do "& wxTE_LEFT" as wxTE_LEFT == 0
599 if ( style & wxTE_CENTRE )
600 msStyle |= ES_CENTER;
601 else if ( style & wxTE_RIGHT )
602 msStyle |= ES_RIGHT;
603 else
604 msStyle |= ES_LEFT; // ES_LEFT is 0 as well but for consistency...
605
606 return msStyle;
607 }
608
609 void wxTextCtrl::SetWindowStyleFlag(long style)
610 {
611 // changing the alignment of the control dynamically only works under XP
612 // (but not older Windows version) and only for plain EDIT controls (not
613 // RICH ones) and we have to recreate the control to make it always work
614 if ( IsRich() || wxGetWinVersion() < wxWinVersion_XP )
615 {
616 const long alignMask = wxTE_LEFT | wxTE_CENTRE | wxTE_RIGHT;
617 if ( (style & alignMask) != (GetWindowStyle() & alignMask) )
618 {
619 const wxString value = GetValue();
620 const wxPoint pos = GetPosition();
621 const wxSize size = GetSize();
622
623 // delete the old window
624 HWND hwnd = GetHwnd();
625 DissociateHandle();
626 ::DestroyWindow(hwnd);
627
628 // create the new one with the updated flags
629 m_windowStyle = style;
630 MSWCreateText(value, pos, size);
631
632 // and make sure it has the same attributes as before
633 if ( m_hasFont )
634 {
635 // calling SetFont(m_font) would do nothing as the code would
636 // notice that the font didn't change, so force it to believe
637 // that it did
638 wxFont font = m_font;
639 m_font = wxNullFont;
640 SetFont(font);
641 }
642
643 if ( m_hasFgCol )
644 {
645 wxColour colFg = m_foregroundColour;
646 m_foregroundColour = wxNullColour;
647 SetForegroundColour(colFg);
648 }
649
650 if ( m_hasBgCol )
651 {
652 wxColour colBg = m_backgroundColour;
653 m_backgroundColour = wxNullColour;
654 SetBackgroundColour(colBg);
655 }
656
657 // note that text styles are lost but this is probably not a big
658 // problem: if you use styles, you probably don't use nor change
659 // alignment flags anyhow
660
661 return;
662 }
663 }
664
665 #if wxUSE_RICHEDIT
666 // we have to deal with some styles separately because they can't be
667 // changed by simply calling SetWindowLong(GWL_STYLE) but can be changed
668 // using richedit-specific EM_SETOPTIONS
669 if ( IsRich() &&
670 ((style & wxTE_NOHIDESEL) != (GetWindowStyle() & wxTE_NOHIDESEL)) )
671 {
672 bool set = (style & wxTE_NOHIDESEL) != 0;
673
674 ::SendMessage(GetHwnd(), EM_SETOPTIONS, set ? ECOOP_OR : ECOOP_AND,
675 set ? ECO_NOHIDESEL : ~ECO_NOHIDESEL);
676 }
677 #endif // wxUSE_RICHEDIT
678
679 wxControl::SetWindowStyleFlag(style);
680 }
681
682 // ----------------------------------------------------------------------------
683 // set/get the controls text
684 // ----------------------------------------------------------------------------
685
686 bool wxTextCtrl::IsEmpty() const
687 {
688 // this is an optimization for multiline controls containing a lot of text
689 if ( IsMultiLine() && GetNumberOfLines() != 1 )
690 return false;
691
692 return wxTextCtrlBase::IsEmpty();
693 }
694
695 wxString wxTextCtrl::GetValue() const
696 {
697 // range 0..-1 is special for GetRange() and means to retrieve all text
698 return GetRange(0, -1);
699 }
700
701 wxString wxTextCtrl::GetRange(long from, long to) const
702 {
703 wxString str;
704
705 if ( from >= to && to != -1 )
706 {
707 // nothing to retrieve
708 return str;
709 }
710
711 #if wxUSE_RICHEDIT
712 if ( IsRich() )
713 {
714 int len = GetWindowTextLength(GetHwnd());
715 if ( len > from )
716 {
717 if ( to == -1 )
718 to = len;
719
720 #if !wxUSE_UNICODE
721 // we must use EM_STREAMOUT if we don't want to lose all characters
722 // not representable in the current character set (EM_GETTEXTRANGE
723 // simply replaces them with question marks...)
724 if ( GetRichVersion() > 1 )
725 {
726 // we must have some encoding, otherwise any 8bit chars in the
727 // control are simply *lost* (replaced by '?')
728 wxFontEncoding encoding = wxFONTENCODING_SYSTEM;
729
730 wxFont font = m_defaultStyle.GetFont();
731 if ( !font.Ok() )
732 font = GetFont();
733
734 if ( font.Ok() )
735 {
736 encoding = font.GetEncoding();
737 }
738
739 if ( encoding == wxFONTENCODING_SYSTEM )
740 {
741 encoding = wxLocale::GetSystemEncoding();
742 }
743
744 if ( encoding == wxFONTENCODING_SYSTEM )
745 {
746 encoding = wxFONTENCODING_ISO8859_1;
747 }
748
749 str = StreamOut(encoding);
750
751 if ( !str.empty() )
752 {
753 // we have to manually extract the required part, luckily
754 // this is easy in this case as EOL characters in str are
755 // just LFs because we remove CRs in wxRichEditStreamOut
756 str = str.Mid(from, to - from);
757 }
758 }
759
760 // StreamOut() wasn't used or failed, try to do it in normal way
761 if ( str.empty() )
762 #endif // !wxUSE_UNICODE
763 {
764 // alloc one extra WORD as needed by the control
765 wxStringBuffer tmp(str, ++len);
766 wxChar *p = tmp;
767
768 TEXTRANGE textRange;
769 textRange.chrg.cpMin = from;
770 textRange.chrg.cpMax = to;
771 textRange.lpstrText = p;
772
773 (void)::SendMessage(GetHwnd(), EM_GETTEXTRANGE,
774 0, (LPARAM)&textRange);
775
776 if ( m_verRichEdit > 1 )
777 {
778 // RichEdit 2.0 uses just CR ('\r') for the
779 // newlines which is neither Unix nor Windows
780 // style - convert it to something reasonable
781 for ( ; *p; p++ )
782 {
783 if ( *p == _T('\r') )
784 *p = _T('\n');
785 }
786 }
787 }
788
789 if ( m_verRichEdit == 1 )
790 {
791 // convert to the canonical form - see comment below
792 str = wxTextFile::Translate(str, wxTextFileType_Unix);
793 }
794 }
795 //else: no text at all, leave the string empty
796 }
797 else
798 #endif // wxUSE_RICHEDIT
799 {
800 // retrieve all text
801 str = wxGetWindowText(GetHWND());
802
803 // need only a range?
804 if ( from < to )
805 {
806 str = str.Mid(from, to - from);
807 }
808
809 // WM_GETTEXT uses standard DOS CR+LF (\r\n) convention - convert to the
810 // canonical one (same one as above) for consistency with the other kinds
811 // of controls and, more importantly, with the other ports
812 str = wxTextFile::Translate(str, wxTextFileType_Unix);
813 }
814
815 return str;
816 }
817
818 void wxTextCtrl::DoSetValue(const wxString& value, int flags)
819 {
820 // if the text is long enough, it's faster to just set it instead of first
821 // comparing it with the old one (chances are that it will be different
822 // anyhow, this comparison is there to avoid flicker for small single-line
823 // edit controls mostly)
824 if ( (value.length() > 0x400) || (value != GetValue()) )
825 {
826 DoWriteText(value, flags /* doesn't include SelectionOnly here */);
827
828 // mark the control as being not dirty - we changed its text, not the
829 // user
830 DiscardEdits();
831
832 // for compatibility, don't move the cursor when doing SetValue()
833 SetInsertionPoint(0);
834 }
835 else // same text
836 {
837 // still reset the modified flag even if the value didn't really change
838 // because now it comes from the program and not the user (and do it
839 // before generating the event so that the event handler could get the
840 // expected value from IsModified())
841 DiscardEdits();
842
843 // still send an event for consistency
844 if (flags & SetValue_SendEvent)
845 SendUpdateEvent();
846 }
847 }
848
849 #if wxUSE_RICHEDIT && (!wxUSE_UNICODE || wxUSE_UNICODE_MSLU)
850
851 // TODO: using memcpy() would improve performance a lot for big amounts of text
852
853 DWORD CALLBACK
854 wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb)
855 {
856 *pcb = 0;
857
858 const wchar_t ** const ppws = (const wchar_t **)dwCookie;
859
860 wchar_t *wbuf = (wchar_t *)buf;
861 const wchar_t *wpc = *ppws;
862 while ( cb && *wpc )
863 {
864 *wbuf++ = *wpc++;
865
866 cb -= sizeof(wchar_t);
867 (*pcb) += sizeof(wchar_t);
868 }
869
870 *ppws = wpc;
871
872 return 0;
873 }
874
875 // helper struct used to pass parameters from wxTextCtrl to wxRichEditStreamOut
876 struct wxStreamOutData
877 {
878 wchar_t *wpc;
879 size_t len;
880 };
881
882 DWORD CALLBACK
883 wxRichEditStreamOut(DWORD_PTR dwCookie, BYTE *buf, LONG cb, LONG *pcb)
884 {
885 *pcb = 0;
886
887 wxStreamOutData *data = (wxStreamOutData *)dwCookie;
888
889 const wchar_t *wbuf = (const wchar_t *)buf;
890 wchar_t *wpc = data->wpc;
891 while ( cb )
892 {
893 wchar_t wch = *wbuf++;
894
895 // turn "\r\n" into "\n" on the fly
896 if ( wch != L'\r' )
897 *wpc++ = wch;
898 else
899 data->len--;
900
901 cb -= sizeof(wchar_t);
902 (*pcb) += sizeof(wchar_t);
903 }
904
905 data->wpc = wpc;
906
907 return 0;
908 }
909
910
911 #if wxUSE_UNICODE_MSLU
912 #define UNUSED_IF_MSLU(param)
913 #else
914 #define UNUSED_IF_MSLU(param) param
915 #endif
916
917 bool
918 wxTextCtrl::StreamIn(const wxString& value,
919 wxFontEncoding UNUSED_IF_MSLU(encoding),
920 bool selectionOnly)
921 {
922 #if wxUSE_UNICODE_MSLU
923 const wchar_t *wpc = value.c_str();
924 #else // !wxUSE_UNICODE_MSLU
925 wxCSConv conv(encoding);
926
927 const size_t len = conv.MB2WC(NULL, value, value.length());
928
929 #if wxUSE_WCHAR_T
930 wxWCharBuffer wchBuf(len);
931 wchar_t *wpc = wchBuf.data();
932 #else
933 wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
934 wchar_t *wpc = wchBuf;
935 #endif
936
937 conv.MB2WC(wpc, value, value.length());
938 #endif // wxUSE_UNICODE_MSLU
939
940 // finally, stream it in the control
941 EDITSTREAM eds;
942 wxZeroMemory(eds);
943 eds.dwCookie = (DWORD)&wpc;
944 // the cast below is needed for broken (very) old mingw32 headers
945 eds.pfnCallback = (EDITSTREAMCALLBACK)wxRichEditStreamIn;
946
947 // same problem as in DoWriteText(): we can get multiple events here
948 UpdatesCountFilter ucf(m_updatesCount);
949
950 ::SendMessage(GetHwnd(), EM_STREAMIN,
951 SF_TEXT |
952 SF_UNICODE |
953 (selectionOnly ? SFF_SELECTION : 0),
954 (LPARAM)&eds);
955
956 // It's okay for EN_UPDATE to not be sent if the selection is empty and
957 // the text is empty, otherwise warn the programmer about it.
958 wxASSERT_MSG( ucf.GotUpdate() || ( !HasSelection() && value.empty() ),
959 _T("EM_STREAMIN didn't send EN_UPDATE?") );
960
961 if ( eds.dwError )
962 {
963 wxLogLastError(_T("EM_STREAMIN"));
964 }
965
966 #if !wxUSE_WCHAR_T
967 free(wchBuf);
968 #endif // !wxUSE_WCHAR_T
969
970 return true;
971 }
972
973 #if !wxUSE_UNICODE_MSLU
974
975 wxString
976 wxTextCtrl::StreamOut(wxFontEncoding encoding, bool selectionOnly) const
977 {
978 wxString out;
979
980 const int len = GetWindowTextLength(GetHwnd());
981
982 #if wxUSE_WCHAR_T
983 wxWCharBuffer wchBuf(len);
984 wchar_t *wpc = wchBuf.data();
985 #else
986 wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
987 wchar_t *wpc = wchBuf;
988 #endif
989
990 wxStreamOutData data;
991 data.wpc = wpc;
992 data.len = len;
993
994 EDITSTREAM eds;
995 wxZeroMemory(eds);
996 eds.dwCookie = (DWORD)&data;
997 eds.pfnCallback = wxRichEditStreamOut;
998
999 ::SendMessage
1000 (
1001 GetHwnd(),
1002 EM_STREAMOUT,
1003 SF_TEXT | SF_UNICODE | (selectionOnly ? SFF_SELECTION : 0),
1004 (LPARAM)&eds
1005 );
1006
1007 if ( eds.dwError )
1008 {
1009 wxLogLastError(_T("EM_STREAMOUT"));
1010 }
1011 else // streamed out ok
1012 {
1013 // NUL-terminate the string because its length could have been
1014 // decreased by wxRichEditStreamOut
1015 *(wchBuf.data() + data.len) = L'\0';
1016
1017 // now convert to the given encoding (this is a possibly lossful
1018 // conversion but what else can we do)
1019 wxCSConv conv(encoding);
1020 size_t lenNeeded = conv.WC2MB(NULL, wchBuf, 0);
1021 if ( lenNeeded++ )
1022 {
1023 conv.WC2MB(wxStringBuffer(out, lenNeeded), wchBuf, lenNeeded);
1024 }
1025 }
1026
1027 #if !wxUSE_WCHAR_T
1028 free(wchBuf);
1029 #endif // !wxUSE_WCHAR_T
1030
1031 return out;
1032 }
1033
1034 #endif // !wxUSE_UNICODE_MSLU
1035
1036 #endif // wxUSE_RICHEDIT
1037
1038 void wxTextCtrl::WriteText(const wxString& value)
1039 {
1040 DoWriteText(value);
1041 }
1042
1043 void wxTextCtrl::DoWriteText(const wxString& value, int flags)
1044 {
1045 bool selectionOnly = (flags & SetValue_SelectionOnly) != 0;
1046 wxString valueDos;
1047 if ( m_windowStyle & wxTE_MULTILINE )
1048 valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
1049 else
1050 valueDos = value;
1051
1052 #if wxUSE_RICHEDIT
1053 // there are several complications with the rich edit controls here
1054 bool done = false;
1055 if ( IsRich() )
1056 {
1057 // first, ensure that the new text will be in the default style
1058 if ( !m_defaultStyle.IsDefault() )
1059 {
1060 long start, end;
1061 GetSelection(&start, &end);
1062 SetStyle(start, end, m_defaultStyle);
1063 }
1064
1065 #if wxUSE_UNICODE_MSLU
1066 // RichEdit doesn't have Unicode version of EM_REPLACESEL on Win9x,
1067 // but EM_STREAMIN works
1068 if ( wxUsingUnicowsDll() && GetRichVersion() > 1 )
1069 {
1070 done = StreamIn(valueDos, wxFONTENCODING_SYSTEM, selectionOnly);
1071 }
1072 #endif // wxUSE_UNICODE_MSLU
1073
1074 #if !wxUSE_UNICODE
1075 // next check if the text we're inserting must be shown in a non
1076 // default charset -- this only works for RichEdit > 1.0
1077 if ( GetRichVersion() > 1 )
1078 {
1079 wxFont font = m_defaultStyle.GetFont();
1080 if ( !font.Ok() )
1081 font = GetFont();
1082
1083 if ( font.Ok() )
1084 {
1085 wxFontEncoding encoding = font.GetEncoding();
1086 if ( encoding != wxFONTENCODING_SYSTEM )
1087 {
1088 // we have to use EM_STREAMIN to force richedit control 2.0+
1089 // to show any text in the non default charset -- otherwise
1090 // it thinks it knows better than we do and always shows it
1091 // in the default one
1092 done = StreamIn(valueDos, encoding, selectionOnly);
1093 }
1094 }
1095 }
1096 #endif // !wxUSE_UNICODE
1097 }
1098
1099 if ( !done )
1100 #endif // wxUSE_RICHEDIT
1101 {
1102 // in some cases we get 2 EN_CHANGE notifications after the SendMessage
1103 // call (this happens for plain EDITs with EM_REPLACESEL and under some
1104 // -- undetermined -- conditions with rich edit) and sometimes we don't
1105 // get any events at all (plain EDIT with WM_SETTEXT), so ensure that
1106 // we generate exactly one of them by ignoring all but the first one in
1107 // SendUpdateEvent() and generating one ourselves if we hadn't got any
1108 // notifications from Windows
1109 if ( !(flags & SetValue_SendEvent) )
1110 m_updatesCount = -2; // suppress any update event
1111
1112 UpdatesCountFilter ucf(m_updatesCount);
1113
1114 ::SendMessage(GetHwnd(), selectionOnly ? EM_REPLACESEL : WM_SETTEXT,
1115 // EM_REPLACESEL takes 1 to indicate the operation should be redoable
1116 selectionOnly ? 1 : 0, (LPARAM)valueDos.c_str());
1117
1118 if ( !ucf.GotUpdate() && (flags & SetValue_SendEvent) )
1119 {
1120 SendUpdateEvent();
1121 }
1122 }
1123 }
1124
1125 void wxTextCtrl::AppendText(const wxString& text)
1126 {
1127 SetInsertionPointEnd();
1128
1129 WriteText(text);
1130
1131 #if wxUSE_RICHEDIT
1132 // don't do this if we're frozen, saves some time
1133 if ( !IsFrozen() && IsMultiLine() && GetRichVersion() > 1 )
1134 {
1135 // setting the caret to the end and showing it simply doesn't work for
1136 // RichEdit 2.0 -- force it to still do what we want
1137 ::SendMessage(GetHwnd(), EM_LINESCROLL, 0, GetNumberOfLines());
1138 }
1139 #endif // wxUSE_RICHEDIT
1140 }
1141
1142 void wxTextCtrl::Clear()
1143 {
1144 ::SetWindowText(GetHwnd(), wxEmptyString);
1145
1146 #if wxUSE_RICHEDIT
1147 if ( !IsRich() )
1148 #endif // wxUSE_RICHEDIT
1149 {
1150 // rich edit controls send EN_UPDATE from WM_SETTEXT handler themselves
1151 // but the normal ones don't -- make Clear() behaviour consistent by
1152 // always sending this event
1153
1154 // Windows already sends an update event for single-line
1155 // controls.
1156 if ( m_windowStyle & wxTE_MULTILINE )
1157 SendUpdateEvent();
1158 }
1159 }
1160
1161 #ifdef __WIN32__
1162
1163 bool wxTextCtrl::EmulateKeyPress(const wxKeyEvent& event)
1164 {
1165 SetFocus();
1166
1167 size_t lenOld = GetValue().length();
1168
1169 wxUint32 code = event.GetRawKeyCode();
1170 ::keybd_event((BYTE)code, 0, 0 /* key press */, 0);
1171 ::keybd_event((BYTE)code, 0, KEYEVENTF_KEYUP, 0);
1172
1173 // assume that any alphanumeric key changes the total number of characters
1174 // in the control - this should work in 99% of cases
1175 return GetValue().length() != lenOld;
1176 }
1177
1178 #endif // __WIN32__
1179
1180 // ----------------------------------------------------------------------------
1181 // Clipboard operations
1182 // ----------------------------------------------------------------------------
1183
1184 void wxTextCtrl::Copy()
1185 {
1186 if (CanCopy())
1187 {
1188 ::SendMessage(GetHwnd(), WM_COPY, 0, 0L);
1189 }
1190 }
1191
1192 void wxTextCtrl::Cut()
1193 {
1194 if (CanCut())
1195 {
1196 ::SendMessage(GetHwnd(), WM_CUT, 0, 0L);
1197 }
1198 }
1199
1200 void wxTextCtrl::Paste()
1201 {
1202 if (CanPaste())
1203 {
1204 ::SendMessage(GetHwnd(), WM_PASTE, 0, 0L);
1205 }
1206 }
1207
1208 bool wxTextCtrl::HasSelection() const
1209 {
1210 long from, to;
1211 GetSelection(&from, &to);
1212 return from != to;
1213 }
1214
1215 bool wxTextCtrl::CanCopy() const
1216 {
1217 // Can copy if there's a selection
1218 return HasSelection();
1219 }
1220
1221 bool wxTextCtrl::CanCut() const
1222 {
1223 return CanCopy() && IsEditable();
1224 }
1225
1226 bool wxTextCtrl::CanPaste() const
1227 {
1228 if ( !IsEditable() )
1229 return false;
1230
1231 #if wxUSE_RICHEDIT
1232 if ( IsRich() )
1233 {
1234 UINT cf = 0; // 0 == any format
1235
1236 return ::SendMessage(GetHwnd(), EM_CANPASTE, cf, 0) != 0;
1237 }
1238 #endif // wxUSE_RICHEDIT
1239
1240 // Standard edit control: check for straight text on clipboard
1241 if ( !::OpenClipboard(GetHwndOf(wxTheApp->GetTopWindow())) )
1242 return false;
1243
1244 bool isTextAvailable = ::IsClipboardFormatAvailable(CF_TEXT) != 0;
1245 ::CloseClipboard();
1246
1247 return isTextAvailable;
1248 }
1249
1250 // ----------------------------------------------------------------------------
1251 // Accessors
1252 // ----------------------------------------------------------------------------
1253
1254 void wxTextCtrl::SetEditable(bool editable)
1255 {
1256 HWND hWnd = GetHwnd();
1257 ::SendMessage(hWnd, EM_SETREADONLY, (WPARAM)!editable, (LPARAM)0L);
1258 }
1259
1260 void wxTextCtrl::SetInsertionPoint(long pos)
1261 {
1262 DoSetSelection(pos, pos);
1263 }
1264
1265 void wxTextCtrl::SetInsertionPointEnd()
1266 {
1267 // we must not do anything if the caret is already there because calling
1268 // SetInsertionPoint() thaws the controls if Freeze() had been called even
1269 // if it doesn't actually move the caret anywhere and so the simple fact of
1270 // doing it results in horrible flicker when appending big amounts of text
1271 // to the control in a few chunks (see DoAddText() test in the text sample)
1272 const wxTextPos lastPosition = GetLastPosition();
1273 if ( GetInsertionPoint() == lastPosition )
1274 {
1275 return;
1276 }
1277
1278 long pos;
1279
1280 #if wxUSE_RICHEDIT
1281 if ( m_verRichEdit == 1 )
1282 {
1283 // we don't have to waste time calling GetLastPosition() in this case
1284 pos = -1;
1285 }
1286 else // !RichEdit 1.0
1287 #endif // wxUSE_RICHEDIT
1288 {
1289 pos = lastPosition;
1290 }
1291
1292 SetInsertionPoint(pos);
1293 }
1294
1295 long wxTextCtrl::GetInsertionPoint() const
1296 {
1297 #if wxUSE_RICHEDIT
1298 if ( IsRich() )
1299 {
1300 CHARRANGE range;
1301 range.cpMin = 0;
1302 range.cpMax = 0;
1303 ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
1304 return range.cpMin;
1305 }
1306 #endif // wxUSE_RICHEDIT
1307
1308 DWORD Pos = (DWORD)::SendMessage(GetHwnd(), EM_GETSEL, 0, 0L);
1309 return Pos & 0xFFFF;
1310 }
1311
1312 wxTextPos wxTextCtrl::GetLastPosition() const
1313 {
1314 int numLines = GetNumberOfLines();
1315 long posStartLastLine = XYToPosition(0, numLines - 1);
1316
1317 long lenLastLine = GetLengthOfLineContainingPos(posStartLastLine);
1318
1319 return posStartLastLine + lenLastLine;
1320 }
1321
1322 // If the return values from and to are the same, there is no
1323 // selection.
1324 void wxTextCtrl::GetSelection(long* from, long* to) const
1325 {
1326 #if wxUSE_RICHEDIT
1327 if ( IsRich() )
1328 {
1329 CHARRANGE charRange;
1330 ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &charRange);
1331
1332 *from = charRange.cpMin;
1333 *to = charRange.cpMax;
1334 }
1335 else
1336 #endif // !wxUSE_RICHEDIT
1337 {
1338 DWORD dwStart, dwEnd;
1339 ::SendMessage(GetHwnd(), EM_GETSEL, (WPARAM)&dwStart, (LPARAM)&dwEnd);
1340
1341 *from = dwStart;
1342 *to = dwEnd;
1343 }
1344 }
1345
1346 bool wxTextCtrl::IsEditable() const
1347 {
1348 // strangely enough, we may be called before the control is created: our
1349 // own Create() calls MSWGetStyle() which calls AcceptsFocus() which calls
1350 // us
1351 if ( !m_hWnd )
1352 return true;
1353
1354 long style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1355
1356 return (style & ES_READONLY) == 0;
1357 }
1358
1359 // ----------------------------------------------------------------------------
1360 // selection
1361 // ----------------------------------------------------------------------------
1362
1363 void wxTextCtrl::SetSelection(long from, long to)
1364 {
1365 // if from and to are both -1, it means (in wxWidgets) that all text should
1366 // be selected - translate into Windows convention
1367 if ( (from == -1) && (to == -1) )
1368 {
1369 from = 0;
1370 to = -1;
1371 }
1372
1373 DoSetSelection(from, to);
1374 }
1375
1376 void wxTextCtrl::DoSetSelection(long from, long to, bool scrollCaret)
1377 {
1378 HWND hWnd = GetHwnd();
1379
1380 #if wxUSE_RICHEDIT
1381 if ( IsRich() )
1382 {
1383 CHARRANGE range;
1384 range.cpMin = from;
1385 range.cpMax = to;
1386 ::SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM) &range);
1387 }
1388 else
1389 #endif // wxUSE_RICHEDIT
1390 {
1391 ::SendMessage(hWnd, EM_SETSEL, (WPARAM)from, (LPARAM)to);
1392 }
1393
1394 if ( scrollCaret && !IsFrozen() )
1395 {
1396 #if wxUSE_RICHEDIT
1397 // richedit 3.0 (i.e. the version living in riched20.dll distributed
1398 // with Windows 2000 and beyond) doesn't honour EM_SCROLLCARET when
1399 // emulating richedit 2.0 unless the control has focus or ECO_NOHIDESEL
1400 // option is set (but it does work ok in richedit 1.0 mode...)
1401 //
1402 // so to make it work we either need to give focus to it here which
1403 // will probably create many problems (dummy focus events; window
1404 // containing the text control being brought to foreground
1405 // unexpectedly; ...) or to temporarily set ECO_NOHIDESEL which may
1406 // create other problems too -- and in fact it does because if we turn
1407 // on/off this style while appending the text to the control, the
1408 // vertical scrollbar never appears in it even if we append tons of
1409 // text and to work around this the only solution I found was to use
1410 // ES_DISABLENOSCROLL
1411 //
1412 // this is very ugly but I don't see any other way to make this work
1413 long style = 0;
1414 if ( GetRichVersion() > 1 )
1415 {
1416 if ( !HasFlag(wxTE_NOHIDESEL) )
1417 {
1418 // setting ECO_NOHIDESEL also sets WS_VISIBLE and possibly
1419 // others, remember the style so we can reset it later if needed
1420 style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1421 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1422 ECOOP_OR, ECO_NOHIDESEL);
1423 }
1424 //else: everything is already ok
1425 }
1426 #endif // wxUSE_RICHEDIT
1427
1428 ::SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
1429
1430 #if wxUSE_RICHEDIT
1431 // restore ECO_NOHIDESEL if we changed it
1432 if ( GetRichVersion() > 1 && !HasFlag(wxTE_NOHIDESEL) )
1433 {
1434 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1435 ECOOP_AND, ~ECO_NOHIDESEL);
1436 if ( style != ::GetWindowLong(GetHwnd(), GWL_STYLE) )
1437 ::SetWindowLong(GetHwnd(), GWL_STYLE, style);
1438 }
1439 #endif // wxUSE_RICHEDIT
1440 }
1441 }
1442
1443 // ----------------------------------------------------------------------------
1444 // Working with files
1445 // ----------------------------------------------------------------------------
1446
1447 bool wxTextCtrl::DoLoadFile(const wxString& file, int fileType)
1448 {
1449 if ( wxTextCtrlBase::DoLoadFile(file, fileType) )
1450 {
1451 // update the size limit if needed
1452 AdjustSpaceLimit();
1453
1454 return true;
1455 }
1456
1457 return false;
1458 }
1459
1460 // ----------------------------------------------------------------------------
1461 // Editing
1462 // ----------------------------------------------------------------------------
1463
1464 void wxTextCtrl::Replace(long from, long to, const wxString& value)
1465 {
1466 // Set selection and remove it
1467 DoSetSelection(from, to, false /* don't scroll caret into view */);
1468
1469 DoWriteText(value);
1470 }
1471
1472 void wxTextCtrl::Remove(long from, long to)
1473 {
1474 Replace(from, to, wxEmptyString);
1475 }
1476
1477 bool wxTextCtrl::IsModified() const
1478 {
1479 return ::SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0;
1480 }
1481
1482 void wxTextCtrl::MarkDirty()
1483 {
1484 ::SendMessage(GetHwnd(), EM_SETMODIFY, TRUE, 0L);
1485 }
1486
1487 void wxTextCtrl::DiscardEdits()
1488 {
1489 ::SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0L);
1490 }
1491
1492 int wxTextCtrl::GetNumberOfLines() const
1493 {
1494 return (int)::SendMessage(GetHwnd(), EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0);
1495 }
1496
1497 // ----------------------------------------------------------------------------
1498 // Positions <-> coords
1499 // ----------------------------------------------------------------------------
1500
1501 long wxTextCtrl::XYToPosition(long x, long y) const
1502 {
1503 // This gets the char index for the _beginning_ of this line
1504 long charIndex = ::SendMessage(GetHwnd(), EM_LINEINDEX, (WPARAM)y, (LPARAM)0);
1505
1506 return charIndex + x;
1507 }
1508
1509 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
1510 {
1511 HWND hWnd = GetHwnd();
1512
1513 // This gets the line number containing the character
1514 long lineNo;
1515 #if wxUSE_RICHEDIT
1516 if ( IsRich() )
1517 {
1518 lineNo = ::SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, (LPARAM)pos);
1519 }
1520 else
1521 #endif // wxUSE_RICHEDIT
1522 {
1523 lineNo = ::SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, 0);
1524 }
1525
1526 if ( lineNo == -1 )
1527 {
1528 // no such line
1529 return false;
1530 }
1531
1532 // This gets the char index for the _beginning_ of this line
1533 long charIndex = ::SendMessage(hWnd, EM_LINEINDEX, (WPARAM)lineNo, (LPARAM)0);
1534 if ( charIndex == -1 )
1535 {
1536 return false;
1537 }
1538
1539 // The X position must therefore be the different between pos and charIndex
1540 if ( x )
1541 *x = pos - charIndex;
1542 if ( y )
1543 *y = lineNo;
1544
1545 return true;
1546 }
1547
1548 wxTextCtrlHitTestResult
1549 wxTextCtrl::HitTest(const wxPoint& pt, long *posOut) const
1550 {
1551 // first get the position from Windows
1552 LPARAM lParam;
1553
1554 #if wxUSE_RICHEDIT
1555 POINTL ptl;
1556 if ( IsRich() )
1557 {
1558 // for rich edit controls the position is passed iva the struct fields
1559 ptl.x = pt.x;
1560 ptl.y = pt.y;
1561 lParam = (LPARAM)&ptl;
1562 }
1563 else
1564 #endif // wxUSE_RICHEDIT
1565 {
1566 // for the plain ones, we are limited to 16 bit positions which are
1567 // combined in a single 32 bit value
1568 lParam = MAKELPARAM(pt.x, pt.y);
1569 }
1570
1571 LRESULT pos = ::SendMessage(GetHwnd(), EM_CHARFROMPOS, 0, lParam);
1572
1573 if ( pos == -1 )
1574 {
1575 // this seems to indicate an error...
1576 return wxTE_HT_UNKNOWN;
1577 }
1578
1579 #if wxUSE_RICHEDIT
1580 if ( !IsRich() )
1581 #endif // wxUSE_RICHEDIT
1582 {
1583 // for plain EDIT controls the higher word contains something else
1584 pos = LOWORD(pos);
1585 }
1586
1587
1588 // next determine where it is relatively to our point: EM_CHARFROMPOS
1589 // always returns the closest character but we need to be more precise, so
1590 // double check that we really are where it pretends
1591 POINTL ptReal;
1592
1593 #if wxUSE_RICHEDIT
1594 // FIXME: we need to distinguish between richedit 2 and 3 here somehow but
1595 // we don't know how to do it
1596 if ( IsRich() )
1597 {
1598 ::SendMessage(GetHwnd(), EM_POSFROMCHAR, (WPARAM)&ptReal, pos);
1599 }
1600 else
1601 #endif // wxUSE_RICHEDIT
1602 {
1603 LRESULT lRc = ::SendMessage(GetHwnd(), EM_POSFROMCHAR, pos, 0);
1604
1605 if ( lRc == -1 )
1606 {
1607 // this is apparently returned when pos corresponds to the last
1608 // position
1609 ptReal.x =
1610 ptReal.y = 0;
1611 }
1612 else
1613 {
1614 ptReal.x = LOWORD(lRc);
1615 ptReal.y = HIWORD(lRc);
1616 }
1617 }
1618
1619 wxTextCtrlHitTestResult rc;
1620
1621 if ( pt.y > ptReal.y + GetCharHeight() )
1622 rc = wxTE_HT_BELOW;
1623 else if ( pt.x > ptReal.x + GetCharWidth() )
1624 rc = wxTE_HT_BEYOND;
1625 else
1626 rc = wxTE_HT_ON_TEXT;
1627
1628 if ( posOut )
1629 *posOut = pos;
1630
1631 return rc;
1632 }
1633
1634 // ----------------------------------------------------------------------------
1635 //
1636 // ----------------------------------------------------------------------------
1637
1638 void wxTextCtrl::ShowPosition(long pos)
1639 {
1640 HWND hWnd = GetHwnd();
1641
1642 // To scroll to a position, we pass the number of lines and characters
1643 // to scroll *by*. This means that we need to:
1644 // (1) Find the line position of the current line.
1645 // (2) Find the line position of pos.
1646 // (3) Scroll by (pos - current).
1647 // For now, ignore the horizontal scrolling.
1648
1649 // Is this where scrolling is relative to - the line containing the caret?
1650 // Or is the first visible line??? Try first visible line.
1651 // int currentLineLineNo1 = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)-1, (LPARAM)0L);
1652
1653 int currentLineLineNo = (int)::SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, (WPARAM)0, (LPARAM)0L);
1654
1655 int specifiedLineLineNo = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, (LPARAM)0L);
1656
1657 int linesToScroll = specifiedLineLineNo - currentLineLineNo;
1658
1659 if (linesToScroll != 0)
1660 (void)::SendMessage(hWnd, EM_LINESCROLL, (WPARAM)0, (LPARAM)linesToScroll);
1661 }
1662
1663 long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const
1664 {
1665 return ::SendMessage(GetHwnd(), EM_LINELENGTH, (WPARAM)pos, 0);
1666 }
1667
1668 int wxTextCtrl::GetLineLength(long lineNo) const
1669 {
1670 long pos = XYToPosition(0, lineNo);
1671
1672 return GetLengthOfLineContainingPos(pos);
1673 }
1674
1675 wxString wxTextCtrl::GetLineText(long lineNo) const
1676 {
1677 size_t len = (size_t)GetLineLength(lineNo) + 1;
1678
1679 // there must be at least enough place for the length WORD in the
1680 // buffer
1681 len += sizeof(WORD);
1682
1683 wxString str;
1684 {
1685 wxStringBufferLength tmp(str, len);
1686 wxChar *buf = tmp;
1687
1688 *(WORD *)buf = (WORD)len;
1689 len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf);
1690
1691 #if wxUSE_RICHEDIT
1692 if ( IsRich() )
1693 {
1694 // remove the '\r' returned by the rich edit control, the user code
1695 // should never see it
1696 if ( buf[len - 2] == _T('\r') && buf[len - 1] == _T('\n') )
1697 {
1698 buf[len - 2] = _T('\n');
1699 len--;
1700 }
1701 }
1702 #endif // wxUSE_RICHEDIT
1703
1704 // remove the '\n' at the end, if any (this is how this function is
1705 // supposed to work according to the docs)
1706 if ( buf[len - 1] == _T('\n') )
1707 {
1708 len--;
1709 }
1710
1711 buf[len] = 0;
1712 tmp.SetLength(len);
1713 }
1714
1715 return str;
1716 }
1717
1718 void wxTextCtrl::SetMaxLength(unsigned long len)
1719 {
1720 #if wxUSE_RICHEDIT
1721 if ( IsRich() )
1722 {
1723 ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, len ? len : 0x7fffffff);
1724 }
1725 else
1726 #endif // wxUSE_RICHEDIT
1727 {
1728 if ( len >= 0xffff )
1729 {
1730 // this will set it to a platform-dependent maximum (much more
1731 // than 64Kb under NT)
1732 len = 0;
1733 }
1734
1735 ::SendMessage(GetHwnd(), EM_LIMITTEXT, len, 0);
1736 }
1737 }
1738
1739 // ----------------------------------------------------------------------------
1740 // Undo/redo
1741 // ----------------------------------------------------------------------------
1742
1743 void wxTextCtrl::Undo()
1744 {
1745 if (CanUndo())
1746 {
1747 ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1748 }
1749 }
1750
1751 void wxTextCtrl::Redo()
1752 {
1753 if (CanRedo())
1754 {
1755 #if wxUSE_RICHEDIT
1756 if (GetRichVersion() > 1)
1757 ::SendMessage(GetHwnd(), EM_REDO, 0, 0);
1758 else
1759 #endif
1760 // Same as Undo, since Undo undoes the undo, i.e. a redo.
1761 ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1762 }
1763 }
1764
1765 bool wxTextCtrl::CanUndo() const
1766 {
1767 return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1768 }
1769
1770 bool wxTextCtrl::CanRedo() const
1771 {
1772 #if wxUSE_RICHEDIT
1773 if (GetRichVersion() > 1)
1774 return ::SendMessage(GetHwnd(), EM_CANREDO, 0, 0) != 0;
1775 else
1776 #endif
1777 return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1778 }
1779
1780 // ----------------------------------------------------------------------------
1781 // caret handling (Windows only)
1782 // ----------------------------------------------------------------------------
1783
1784 bool wxTextCtrl::ShowNativeCaret(bool show)
1785 {
1786 if ( show != m_isNativeCaretShown )
1787 {
1788 if ( !(show ? ::ShowCaret(GetHwnd()) : ::HideCaret(GetHwnd())) )
1789 {
1790 // not an error, may simply indicate that it's not shown/hidden
1791 // yet (i.e. it had been hidden/showh 2 times before)
1792 return false;
1793 }
1794
1795 m_isNativeCaretShown = show;
1796 }
1797
1798 return true;
1799 }
1800
1801 // ----------------------------------------------------------------------------
1802 // implemenation details
1803 // ----------------------------------------------------------------------------
1804
1805 void wxTextCtrl::Command(wxCommandEvent & event)
1806 {
1807 SetValue(event.GetString());
1808 ProcessCommand (event);
1809 }
1810
1811 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
1812 {
1813 // By default, load the first file into the text window.
1814 if (event.GetNumberOfFiles() > 0)
1815 {
1816 LoadFile(event.GetFiles()[0]);
1817 }
1818 }
1819
1820 // ----------------------------------------------------------------------------
1821 // kbd input processing
1822 // ----------------------------------------------------------------------------
1823
1824 bool wxTextCtrl::MSWShouldPreProcessMessage(WXMSG* msg)
1825 {
1826 // check for our special keys here: if we don't do it and the parent frame
1827 // uses them as accelerators, they wouldn't work at all, so we disable
1828 // usual preprocessing for them
1829 if ( msg->message == WM_KEYDOWN )
1830 {
1831 const WPARAM vkey = msg->wParam;
1832 if ( HIWORD(msg->lParam) & KF_ALTDOWN )
1833 {
1834 // Alt-Backspace is accelerator for "Undo"
1835 if ( vkey == VK_BACK )
1836 return false;
1837 }
1838 else // no Alt
1839 {
1840 // we want to process some Ctrl-foo and Shift-bar but no key
1841 // combinations without either Ctrl or Shift nor with both of them
1842 // pressed
1843 const int ctrl = wxIsCtrlDown(),
1844 shift = wxIsShiftDown();
1845 switch ( ctrl + shift )
1846 {
1847 default:
1848 wxFAIL_MSG( _T("how many modifiers have we got?") );
1849 // fall through
1850
1851 case 0:
1852 if ( IsMultiLine() && vkey == VK_RETURN )
1853 return false;
1854 // fall through
1855 case 2:
1856 break;
1857
1858 case 1:
1859 // either Ctrl or Shift pressed
1860 if ( ctrl )
1861 {
1862 switch ( vkey )
1863 {
1864 case 'C':
1865 case 'V':
1866 case 'X':
1867 case VK_INSERT:
1868 case VK_DELETE:
1869 case VK_HOME:
1870 case VK_END:
1871 return false;
1872 }
1873 }
1874 else // Shift is pressed
1875 {
1876 if ( vkey == VK_INSERT || vkey == VK_DELETE )
1877 return false;
1878 }
1879 }
1880 }
1881 }
1882
1883 return wxControl::MSWShouldPreProcessMessage(msg);
1884 }
1885
1886 void wxTextCtrl::OnChar(wxKeyEvent& event)
1887 {
1888 switch ( event.GetKeyCode() )
1889 {
1890 case WXK_RETURN:
1891 {
1892 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1893 InitCommandEvent(event);
1894 event.SetString(GetValue());
1895 if ( GetEventHandler()->ProcessEvent(event) )
1896 if ( !HasFlag(wxTE_MULTILINE) )
1897 return;
1898 //else: multiline controls need Enter for themselves
1899 }
1900 break;
1901
1902 case WXK_TAB:
1903 // ok, so this is getting absolutely ridiculous but I don't see
1904 // any other way to fix this bug: when a multiline text control is
1905 // inside a wxFrame, we need to generate the navigation event as
1906 // otherwise nothing happens at all, but when the same control is
1907 // created inside a dialog, IsDialogMessage() *does* switch focus
1908 // all by itself and so if we do it here as well, it is advanced
1909 // twice and goes to the next control... to prevent this from
1910 // happening we're doing this ugly check, the logic being that if
1911 // we don't have focus then it had been already changed to the next
1912 // control
1913 //
1914 // the right thing to do would, of course, be to understand what
1915 // the hell is IsDialogMessage() doing but this is beyond my feeble
1916 // forces at the moment unfortunately
1917 if ( !(m_windowStyle & wxTE_PROCESS_TAB))
1918 {
1919 if ( FindFocus() == this )
1920 {
1921 int flags = 0;
1922 if (!event.ShiftDown())
1923 flags |= wxNavigationKeyEvent::IsForward ;
1924 if (event.ControlDown())
1925 flags |= wxNavigationKeyEvent::WinChange ;
1926 if (Navigate(flags))
1927 return;
1928 }
1929 }
1930 else
1931 {
1932 // Insert tab since calling the default Windows handler
1933 // doesn't seem to do it
1934 WriteText(wxT("\t"));
1935 return;
1936 }
1937 break;
1938 }
1939
1940 // no, we didn't process it
1941 event.Skip();
1942 }
1943
1944 WXLRESULT wxTextCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
1945 {
1946 WXLRESULT lRc = wxTextCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
1947
1948 switch ( nMsg )
1949 {
1950 case WM_GETDLGCODE:
1951 {
1952 // we always want the chars and the arrows: the arrows for
1953 // navigation and the chars because we want Ctrl-C to work even
1954 // in a read only control
1955 long lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
1956
1957 if ( IsEditable() )
1958 {
1959 // we may have several different cases:
1960 // 1. normal: both TAB and ENTER are used for navigation
1961 // 2. ctrl wants TAB for itself: ENTER is used to pass to
1962 // the next control in the dialog
1963 // 3. ctrl wants ENTER for itself: TAB is used for dialog
1964 // navigation
1965 // 4. ctrl wants both TAB and ENTER: Ctrl-ENTER is used to
1966 // go to the next control (we need some way to do it)
1967
1968 // multiline controls should always get ENTER for themselves
1969 if ( HasFlag(wxTE_PROCESS_ENTER) || HasFlag(wxTE_MULTILINE) )
1970 lDlgCode |= DLGC_WANTMESSAGE;
1971
1972 if ( HasFlag(wxTE_PROCESS_TAB) )
1973 lDlgCode |= DLGC_WANTTAB;
1974
1975 lRc |= lDlgCode;
1976 }
1977 else // !editable
1978 {
1979 // NB: use "=", not "|=" as the base class version returns
1980 // the same flags is this state as usual (i.e.
1981 // including DLGC_WANTMESSAGE). This is strange (how
1982 // does it work in the native Win32 apps?) but for now
1983 // live with it.
1984 lRc = lDlgCode;
1985 }
1986 }
1987 break;
1988
1989 case WM_CUT:
1990 case WM_COPY:
1991 case WM_PASTE:
1992 if ( HandleClipboardEvent(nMsg) )
1993 lRc = 0;
1994 break;
1995 }
1996
1997 return lRc;
1998 }
1999
2000 // ----------------------------------------------------------------------------
2001 // text control event processing
2002 // ----------------------------------------------------------------------------
2003
2004 bool wxTextCtrl::SendUpdateEvent()
2005 {
2006 switch ( m_updatesCount )
2007 {
2008 case 0:
2009 // remember that we've got an update
2010 m_updatesCount++;
2011 break;
2012
2013 case 1:
2014 // we had already sent one event since the last control modification
2015 return false;
2016
2017 default:
2018 wxFAIL_MSG( _T("unexpected wxTextCtrl::m_updatesCount value") );
2019 // fall through
2020
2021 case -1:
2022 // we hadn't updated the control ourselves, this event comes from
2023 // the user, don't need to ignore it nor update the count
2024 break;
2025
2026 case -2:
2027 // the control was updated programmatically and we do NOT want to
2028 // send events
2029 return false;
2030 }
2031
2032 wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, GetId());
2033 InitCommandEvent(event);
2034
2035 return ProcessCommand(event);
2036 }
2037
2038 bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
2039 {
2040 switch ( param )
2041 {
2042 case EN_SETFOCUS:
2043 case EN_KILLFOCUS:
2044 {
2045 wxFocusEvent event(param == EN_KILLFOCUS ? wxEVT_KILL_FOCUS
2046 : wxEVT_SET_FOCUS,
2047 m_windowId);
2048 event.SetEventObject(this);
2049 GetEventHandler()->ProcessEvent(event);
2050 }
2051 break;
2052
2053 case EN_CHANGE:
2054 SendUpdateEvent();
2055 break;
2056
2057 case EN_MAXTEXT:
2058 // the text size limit has been hit -- try to increase it
2059 if ( !AdjustSpaceLimit() )
2060 {
2061 wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, m_windowId);
2062 InitCommandEvent(event);
2063 event.SetString(GetValue());
2064 ProcessCommand(event);
2065 }
2066 break;
2067
2068 // the other edit notification messages are not processed
2069 default:
2070 return false;
2071 }
2072
2073 // processed
2074 return true;
2075 }
2076
2077 WXHBRUSH wxTextCtrl::MSWControlColor(WXHDC hDC, WXHWND hWnd)
2078 {
2079 if ( !IsEnabled() && !HasFlag(wxTE_MULTILINE) )
2080 return MSWControlColorDisabled(hDC);
2081
2082 return wxTextCtrlBase::MSWControlColor(hDC, hWnd);
2083 }
2084
2085 bool wxTextCtrl::HasSpaceLimit(unsigned int *len) const
2086 {
2087 // HACK: we try to automatically extend the limit for the amount of text
2088 // to allow (interactively) entering more than 64Kb of text under
2089 // Win9x but we shouldn't reset the text limit which was previously
2090 // set explicitly with SetMaxLength()
2091 //
2092 // Unfortunately there is no EM_GETLIMITTEXTSETBYUSER and so we don't
2093 // know the limit we set (if any). We could solve this by storing the
2094 // limit we set in wxTextCtrl but to save space we prefer to simply
2095 // test here the actual limit value: we consider that SetMaxLength()
2096 // can only be called for small values while EN_MAXTEXT is only sent
2097 // for large values (in practice the default limit seems to be 30000
2098 // but make it smaller just to be on the safe side)
2099 *len = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
2100 return *len < 10001;
2101
2102 }
2103
2104 bool wxTextCtrl::AdjustSpaceLimit()
2105 {
2106 unsigned int limit;
2107 if ( HasSpaceLimit(&limit) )
2108 return false;
2109
2110 unsigned int len = ::GetWindowTextLength(GetHwnd());
2111 if ( len >= limit )
2112 {
2113 // increment in 32Kb chunks
2114 SetMaxLength(len + 0x8000);
2115 }
2116
2117 // we changed the limit
2118 return true;
2119 }
2120
2121 bool wxTextCtrl::AcceptsFocus() const
2122 {
2123 // we don't want focus if we can't be edited unless we're a multiline
2124 // control because then it might be still nice to get focus from keyboard
2125 // to be able to scroll it without mouse
2126 return (IsEditable() || IsMultiLine()) && wxControl::AcceptsFocus();
2127 }
2128
2129 wxSize wxTextCtrl::DoGetBestSize() const
2130 {
2131 int cx, cy;
2132 wxGetCharSize(GetHWND(), &cx, &cy, GetFont());
2133
2134 int wText = DEFAULT_ITEM_WIDTH;
2135
2136 int hText = cy;
2137 if ( m_windowStyle & wxTE_MULTILINE )
2138 {
2139 hText *= wxMax(wxMin(GetNumberOfLines(), 10), 2);
2140 }
2141 //else: for single line control everything is ok
2142
2143 // we have to add the adjustments for the control height only once, not
2144 // once per line, so do it after multiplication above
2145 hText += EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy) - cy;
2146
2147 return wxSize(wText, hText);
2148 }
2149
2150 // ----------------------------------------------------------------------------
2151 // standard handlers for standard edit menu events
2152 // ----------------------------------------------------------------------------
2153
2154 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
2155 {
2156 Cut();
2157 }
2158
2159 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
2160 {
2161 Copy();
2162 }
2163
2164 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
2165 {
2166 Paste();
2167 }
2168
2169 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
2170 {
2171 Undo();
2172 }
2173
2174 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
2175 {
2176 Redo();
2177 }
2178
2179 void wxTextCtrl::OnDelete(wxCommandEvent& WXUNUSED(event))
2180 {
2181 long from, to;
2182 GetSelection(& from, & to);
2183 if (from != -1 && to != -1)
2184 Remove(from, to);
2185 }
2186
2187 void wxTextCtrl::OnSelectAll(wxCommandEvent& WXUNUSED(event))
2188 {
2189 SetSelection(-1, -1);
2190 }
2191
2192 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
2193 {
2194 event.Enable( CanCut() );
2195 }
2196
2197 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
2198 {
2199 event.Enable( CanCopy() );
2200 }
2201
2202 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
2203 {
2204 event.Enable( CanPaste() );
2205 }
2206
2207 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
2208 {
2209 event.Enable( CanUndo() );
2210 }
2211
2212 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
2213 {
2214 event.Enable( CanRedo() );
2215 }
2216
2217 void wxTextCtrl::OnUpdateDelete(wxUpdateUIEvent& event)
2218 {
2219 long from, to;
2220 GetSelection(& from, & to);
2221 event.Enable(from != -1 && to != -1 && from != to && IsEditable()) ;
2222 }
2223
2224 void wxTextCtrl::OnUpdateSelectAll(wxUpdateUIEvent& event)
2225 {
2226 event.Enable(GetLastPosition() > 0);
2227 }
2228
2229 void wxTextCtrl::OnContextMenu(wxContextMenuEvent& event)
2230 {
2231 #if wxUSE_RICHEDIT
2232 if (IsRich())
2233 {
2234 if (!m_privateContextMenu)
2235 {
2236 m_privateContextMenu = new wxMenu;
2237 m_privateContextMenu->Append(wxID_UNDO, _("&Undo"));
2238 m_privateContextMenu->Append(wxID_REDO, _("&Redo"));
2239 m_privateContextMenu->AppendSeparator();
2240 m_privateContextMenu->Append(wxID_CUT, _("Cu&t"));
2241 m_privateContextMenu->Append(wxID_COPY, _("&Copy"));
2242 m_privateContextMenu->Append(wxID_PASTE, _("&Paste"));
2243 m_privateContextMenu->Append(wxID_CLEAR, _("&Delete"));
2244 m_privateContextMenu->AppendSeparator();
2245 m_privateContextMenu->Append(wxID_SELECTALL, _("Select &All"));
2246 }
2247 PopupMenu(m_privateContextMenu);
2248 return;
2249 }
2250 else
2251 #endif
2252 event.Skip();
2253 }
2254
2255 void wxTextCtrl::OnSetFocus(wxFocusEvent& WXUNUSED(event))
2256 {
2257 // be sure the caret remains invisible if the user had hidden it
2258 if ( !m_isNativeCaretShown )
2259 {
2260 ::HideCaret(GetHwnd());
2261 }
2262 }
2263
2264 // ----------------------------------------------------------------------------
2265 // Default colors for MSW text control
2266 //
2267 // Set default background color to the native white instead of
2268 // the default wxSYS_COLOUR_BTNFACE (is triggered with wxNullColour).
2269 // ----------------------------------------------------------------------------
2270
2271 wxVisualAttributes wxTextCtrl::GetDefaultAttributes() const
2272 {
2273 wxVisualAttributes attrs;
2274 attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
2275 attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
2276 attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW); //white
2277
2278 return attrs;
2279 }
2280
2281 // the rest of the file only deals with the rich edit controls
2282 #if wxUSE_RICHEDIT
2283
2284 // ----------------------------------------------------------------------------
2285 // EN_LINK processing
2286 // ----------------------------------------------------------------------------
2287
2288 bool wxTextCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
2289 {
2290 NMHDR *hdr = (NMHDR* )lParam;
2291 switch ( hdr->code )
2292 {
2293 case EN_MSGFILTER:
2294 {
2295 const MSGFILTER *msgf = (MSGFILTER *)lParam;
2296 UINT msg = msgf->msg;
2297
2298 // this is a bit crazy but richedit 1.0 sends us all mouse
2299 // events _except_ WM_LBUTTONUP (don't ask me why) so we have
2300 // generate the wxWin events for this message manually
2301 //
2302 // NB: in fact, this is still not totally correct as it does
2303 // send us WM_LBUTTONUP if the selection was cleared by the
2304 // last click -- so currently we get 2 events in this case,
2305 // but as I don't see any obvious way to check for this I
2306 // leave this code in place because it's still better than
2307 // not getting left up events at all
2308 if ( msg == WM_LBUTTONUP )
2309 {
2310 WXUINT flags = msgf->wParam;
2311 int x = GET_X_LPARAM(msgf->lParam),
2312 y = GET_Y_LPARAM(msgf->lParam);
2313
2314 HandleMouseEvent(msg, x, y, flags);
2315 }
2316 }
2317
2318 // return true to process the event (and false to ignore it)
2319 return true;
2320
2321 case EN_LINK:
2322 {
2323 const ENLINK *enlink = (ENLINK *)hdr;
2324
2325 switch ( enlink->msg )
2326 {
2327 case WM_SETCURSOR:
2328 // ok, so it is hardcoded - do we really nee to
2329 // customize it?
2330 {
2331 wxCursor cur(wxCURSOR_HAND);
2332 ::SetCursor(GetHcursorOf(cur));
2333 *result = TRUE;
2334 break;
2335 }
2336
2337 case WM_MOUSEMOVE:
2338 case WM_LBUTTONDOWN:
2339 case WM_LBUTTONUP:
2340 case WM_LBUTTONDBLCLK:
2341 case WM_RBUTTONDOWN:
2342 case WM_RBUTTONUP:
2343 case WM_RBUTTONDBLCLK:
2344 // send a mouse event
2345 {
2346 static const wxEventType eventsMouse[] =
2347 {
2348 wxEVT_MOTION,
2349 wxEVT_LEFT_DOWN,
2350 wxEVT_LEFT_UP,
2351 wxEVT_LEFT_DCLICK,
2352 wxEVT_RIGHT_DOWN,
2353 wxEVT_RIGHT_UP,
2354 wxEVT_RIGHT_DCLICK,
2355 };
2356
2357 // the event ids are consecutive
2358 wxMouseEvent
2359 evtMouse(eventsMouse[enlink->msg - WM_MOUSEMOVE]);
2360
2361 InitMouseEvent(evtMouse,
2362 GET_X_LPARAM(enlink->lParam),
2363 GET_Y_LPARAM(enlink->lParam),
2364 enlink->wParam);
2365
2366 wxTextUrlEvent event(m_windowId, evtMouse,
2367 enlink->chrg.cpMin,
2368 enlink->chrg.cpMax);
2369
2370 InitCommandEvent(event);
2371
2372 *result = ProcessCommand(event);
2373 }
2374 break;
2375 }
2376 }
2377 return true;
2378 }
2379
2380 // not processed, leave it to the base class
2381 return wxTextCtrlBase::MSWOnNotify(idCtrl, lParam, result);
2382 }
2383
2384 // ----------------------------------------------------------------------------
2385 // colour setting for the rich edit controls
2386 // ----------------------------------------------------------------------------
2387
2388 bool wxTextCtrl::SetBackgroundColour(const wxColour& colour)
2389 {
2390 if ( !wxTextCtrlBase::SetBackgroundColour(colour) )
2391 {
2392 // colour didn't really change
2393 return false;
2394 }
2395
2396 if ( IsRich() )
2397 {
2398 // rich edit doesn't use WM_CTLCOLOR, hence we need to send
2399 // EM_SETBKGNDCOLOR additionally
2400 ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour));
2401 }
2402
2403 return true;
2404 }
2405
2406 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
2407 {
2408 if ( !wxTextCtrlBase::SetForegroundColour(colour) )
2409 {
2410 // colour didn't really change
2411 return false;
2412 }
2413
2414 if ( IsRich() )
2415 {
2416 // change the colour of everything
2417 CHARFORMAT cf;
2418 wxZeroMemory(cf);
2419 cf.cbSize = sizeof(cf);
2420 cf.dwMask = CFM_COLOR;
2421 cf.crTextColor = wxColourToRGB(colour);
2422 ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf);
2423 }
2424
2425 return true;
2426 }
2427
2428 // ----------------------------------------------------------------------------
2429 // styling support for rich edit controls
2430 // ----------------------------------------------------------------------------
2431
2432 #if wxUSE_RICHEDIT
2433
2434 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
2435 {
2436 if ( !IsRich() )
2437 {
2438 // can't do it with normal text control
2439 return false;
2440 }
2441
2442 // the richedit 1.0 doesn't handle setting background colour, so don't
2443 // even try to do anything if it's the only thing we want to change
2444 if ( m_verRichEdit == 1 && !style.HasFont() && !style.HasTextColour() &&
2445 !style.HasLeftIndent() && !style.HasRightIndent() && !style.HasAlignment() &&
2446 !style.HasTabs() )
2447 {
2448 // nothing to do: return true if there was really nothing to do and
2449 // false if we failed to set bg colour
2450 return !style.HasBackgroundColour();
2451 }
2452
2453 // order the range if needed
2454 if ( start > end )
2455 {
2456 long tmp = start;
2457 start = end;
2458 end = tmp;
2459 }
2460
2461 // we can only change the format of the selection, so select the range we
2462 // want and restore the old selection later
2463 long startOld, endOld;
2464 GetSelection(&startOld, &endOld);
2465
2466 // but do we really have to change the selection?
2467 bool changeSel = start != startOld || end != endOld;
2468
2469 if ( changeSel )
2470 {
2471 DoSetSelection(start, end, false /* don't scroll caret into view */);
2472 }
2473
2474 // initialize CHARFORMAT struct
2475 #if wxUSE_RICHEDIT2
2476 CHARFORMAT2 cf;
2477 #else
2478 CHARFORMAT cf;
2479 #endif
2480
2481 wxZeroMemory(cf);
2482
2483 // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2484 // CHARFORMAT in that case
2485 #if wxUSE_RICHEDIT2
2486 if ( m_verRichEdit == 1 )
2487 {
2488 // this is the only thing the control is going to grok
2489 cf.cbSize = sizeof(CHARFORMAT);
2490 }
2491 else
2492 #endif
2493 {
2494 // CHARFORMAT or CHARFORMAT2
2495 cf.cbSize = sizeof(cf);
2496 }
2497
2498 if ( style.HasFont() )
2499 {
2500 // VZ: CFM_CHARSET doesn't seem to do anything at all in RichEdit 2.0
2501 // but using it doesn't seem to hurt neither so leaving it for now
2502
2503 cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET |
2504 CFM_ITALIC | CFM_BOLD | CFM_UNDERLINE;
2505
2506 // fill in data from LOGFONT but recalculate lfHeight because we need
2507 // the real height in twips and not the negative number which
2508 // wxFillLogFont() returns (this is correct in general and works with
2509 // the Windows font mapper, but not here)
2510 LOGFONT lf;
2511 wxFillLogFont(&lf, &style.GetFont());
2512 cf.yHeight = 20*style.GetFont().GetPointSize(); // 1 pt = 20 twips
2513 cf.bCharSet = lf.lfCharSet;
2514 cf.bPitchAndFamily = lf.lfPitchAndFamily;
2515 wxStrncpy( cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName) );
2516
2517 // also deal with underline/italic/bold attributes: note that we must
2518 // always set CFM_ITALIC &c bits in dwMask, even if we don't set the
2519 // style to allow clearing it
2520 if ( lf.lfItalic )
2521 {
2522 cf.dwEffects |= CFE_ITALIC;
2523 }
2524
2525 if ( lf.lfWeight == FW_BOLD )
2526 {
2527 cf.dwEffects |= CFE_BOLD;
2528 }
2529
2530 if ( lf.lfUnderline )
2531 {
2532 cf.dwEffects |= CFE_UNDERLINE;
2533 }
2534
2535 // strikeout fonts are not supported by wxWidgets
2536 }
2537
2538 if ( style.HasTextColour() )
2539 {
2540 cf.dwMask |= CFM_COLOR;
2541 cf.crTextColor = wxColourToRGB(style.GetTextColour());
2542 }
2543
2544 #if wxUSE_RICHEDIT2
2545 if ( m_verRichEdit != 1 && style.HasBackgroundColour() )
2546 {
2547 cf.dwMask |= CFM_BACKCOLOR;
2548 cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
2549 }
2550 #endif // wxUSE_RICHEDIT2
2551
2552 // do format the selection
2553 bool ok = ::SendMessage(GetHwnd(), EM_SETCHARFORMAT,
2554 SCF_SELECTION, (LPARAM)&cf) != 0;
2555 if ( !ok )
2556 {
2557 wxLogDebug(_T("SendMessage(EM_SETCHARFORMAT, SCF_SELECTION) failed"));
2558 }
2559
2560 // now do the paragraph formatting
2561 PARAFORMAT2 pf;
2562 wxZeroMemory(pf);
2563 // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2564 // PARAFORMAT in that case
2565 #if wxUSE_RICHEDIT2
2566 if ( m_verRichEdit == 1 )
2567 {
2568 // this is the only thing the control is going to grok
2569 pf.cbSize = sizeof(PARAFORMAT);
2570 }
2571 else
2572 #endif
2573 {
2574 // PARAFORMAT or PARAFORMAT2
2575 pf.cbSize = sizeof(pf);
2576 }
2577
2578 if (style.HasAlignment())
2579 {
2580 pf.dwMask |= PFM_ALIGNMENT;
2581 if (style.GetAlignment() == wxTEXT_ALIGNMENT_RIGHT)
2582 pf.wAlignment = PFA_RIGHT;
2583 else if (style.GetAlignment() == wxTEXT_ALIGNMENT_CENTRE)
2584 pf.wAlignment = PFA_CENTER;
2585 else if (style.GetAlignment() == wxTEXT_ALIGNMENT_JUSTIFIED)
2586 pf.wAlignment = PFA_JUSTIFY;
2587 else
2588 pf.wAlignment = PFA_LEFT;
2589 }
2590
2591 if (style.HasLeftIndent())
2592 {
2593 pf.dwMask |= PFM_STARTINDENT | PFM_OFFSET;
2594
2595 // Convert from 1/10 mm to TWIPS
2596 pf.dxStartIndent = (int) (((double) style.GetLeftIndent()) * mm2twips / 10.0) ;
2597 pf.dxOffset = (int) (((double) style.GetLeftSubIndent()) * mm2twips / 10.0) ;
2598 }
2599
2600 if (style.HasRightIndent())
2601 {
2602 pf.dwMask |= PFM_RIGHTINDENT;
2603
2604 // Convert from 1/10 mm to TWIPS
2605 pf.dxRightIndent = (int) (((double) style.GetRightIndent()) * mm2twips / 10.0) ;
2606 }
2607
2608 if (style.HasTabs())
2609 {
2610 pf.dwMask |= PFM_TABSTOPS;
2611
2612 const wxArrayInt& tabs = style.GetTabs();
2613
2614 pf.cTabCount = (SHORT)wxMin(tabs.GetCount(), MAX_TAB_STOPS);
2615 size_t i;
2616 for (i = 0; i < (size_t) pf.cTabCount; i++)
2617 {
2618 // Convert from 1/10 mm to TWIPS
2619 pf.rgxTabs[i] = (int) (((double) tabs[i]) * mm2twips / 10.0) ;
2620 }
2621 }
2622
2623 #if wxUSE_RICHEDIT2
2624 if ( m_verRichEdit > 1 )
2625 {
2626 if ( wxTheApp->GetLayoutDirection() == wxLayout_RightToLeft )
2627 {
2628 // Use RTL paragraphs in RTL mode to get proper layout
2629 pf.dwMask |= PFM_RTLPARA;
2630 pf.wEffects |= PFE_RTLPARA;
2631 }
2632 }
2633 #endif // wxUSE_RICHEDIT2
2634
2635 if ( pf.dwMask )
2636 {
2637 // do format the selection
2638 bool ok = ::SendMessage(GetHwnd(), EM_SETPARAFORMAT,
2639 0, (LPARAM) &pf) != 0;
2640 if ( !ok )
2641 {
2642 wxLogDebug(_T("SendMessage(EM_SETPARAFORMAT, 0) failed"));
2643 }
2644 }
2645
2646 if ( changeSel )
2647 {
2648 // restore the original selection
2649 DoSetSelection(startOld, endOld, false);
2650 }
2651
2652 return ok;
2653 }
2654
2655 bool wxTextCtrl::SetDefaultStyle(const wxTextAttr& style)
2656 {
2657 if ( !wxTextCtrlBase::SetDefaultStyle(style) )
2658 return false;
2659
2660 if ( IsEditable() )
2661 {
2662 // we have to do this or the style wouldn't apply for the text typed by
2663 // the user
2664 wxTextPos posLast = GetLastPosition();
2665 SetStyle(posLast, posLast, m_defaultStyle);
2666 }
2667
2668 return true;
2669 }
2670
2671 bool wxTextCtrl::GetStyle(long position, wxTextAttr& style)
2672 {
2673 if ( !IsRich() )
2674 {
2675 // can't do it with normal text control
2676 return false;
2677 }
2678
2679 // initialize CHARFORMAT struct
2680 #if wxUSE_RICHEDIT2
2681 CHARFORMAT2 cf;
2682 #else
2683 CHARFORMAT cf;
2684 #endif
2685
2686 wxZeroMemory(cf);
2687
2688 // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2689 // CHARFORMAT in that case
2690 #if wxUSE_RICHEDIT2
2691 if ( m_verRichEdit == 1 )
2692 {
2693 // this is the only thing the control is going to grok
2694 cf.cbSize = sizeof(CHARFORMAT);
2695 }
2696 else
2697 #endif
2698 {
2699 // CHARFORMAT or CHARFORMAT2
2700 cf.cbSize = sizeof(cf);
2701 }
2702 // we can only change the format of the selection, so select the range we
2703 // want and restore the old selection later
2704 long startOld, endOld;
2705 GetSelection(&startOld, &endOld);
2706
2707 // but do we really have to change the selection?
2708 bool changeSel = position != startOld || position != endOld;
2709
2710 if ( changeSel )
2711 {
2712 DoSetSelection(position, position+1, false /* don't scroll caret into view */);
2713 }
2714
2715 // get the selection formatting
2716 (void) ::SendMessage(GetHwnd(), EM_GETCHARFORMAT,
2717 SCF_SELECTION, (LPARAM)&cf) ;
2718
2719
2720 LOGFONT lf;
2721 lf.lfHeight = cf.yHeight;
2722 lf.lfWidth = 0;
2723 lf.lfCharSet = ANSI_CHARSET; // FIXME: how to get correct charset?
2724 lf.lfClipPrecision = 0;
2725 lf.lfEscapement = 0;
2726 wxStrcpy(lf.lfFaceName, cf.szFaceName);
2727
2728 //NOTE: we _MUST_ set each of these values to _something_ since we
2729 //do not call wxZeroMemory on the LOGFONT lf
2730 if (cf.dwEffects & CFE_ITALIC)
2731 lf.lfItalic = TRUE;
2732 else
2733 lf.lfItalic = FALSE;
2734
2735 lf.lfOrientation = 0;
2736 lf.lfPitchAndFamily = cf.bPitchAndFamily;
2737 lf.lfQuality = 0;
2738
2739 if (cf.dwEffects & CFE_STRIKEOUT)
2740 lf.lfStrikeOut = TRUE;
2741 else
2742 lf.lfStrikeOut = FALSE;
2743
2744 if (cf.dwEffects & CFE_UNDERLINE)
2745 lf.lfUnderline = TRUE;
2746 else
2747 lf.lfUnderline = FALSE;
2748
2749 if (cf.dwEffects & CFE_BOLD)
2750 lf.lfWeight = FW_BOLD;
2751 else
2752 lf.lfWeight = FW_NORMAL;
2753
2754 wxFont font = wxCreateFontFromLogFont(& lf);
2755 if (font.Ok())
2756 {
2757 style.SetFont(font);
2758 }
2759 style.SetTextColour(wxColour(cf.crTextColor));
2760
2761 #if wxUSE_RICHEDIT2
2762 if ( m_verRichEdit != 1 )
2763 {
2764 // cf.dwMask |= CFM_BACKCOLOR;
2765 style.SetBackgroundColour(wxColour(cf.crBackColor));
2766 }
2767 #endif // wxUSE_RICHEDIT2
2768
2769 // now get the paragraph formatting
2770 PARAFORMAT2 pf;
2771 wxZeroMemory(pf);
2772 // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2773 // PARAFORMAT in that case
2774 #if wxUSE_RICHEDIT2
2775 if ( m_verRichEdit == 1 )
2776 {
2777 // this is the only thing the control is going to grok
2778 pf.cbSize = sizeof(PARAFORMAT);
2779 }
2780 else
2781 #endif
2782 {
2783 // PARAFORMAT or PARAFORMAT2
2784 pf.cbSize = sizeof(pf);
2785 }
2786
2787 // do format the selection
2788 (void) ::SendMessage(GetHwnd(), EM_GETPARAFORMAT, 0, (LPARAM) &pf) ;
2789
2790 style.SetLeftIndent( (int) ((double) pf.dxStartIndent * twips2mm * 10.0), (int) ((double) pf.dxOffset * twips2mm * 10.0) );
2791 style.SetRightIndent( (int) ((double) pf.dxRightIndent * twips2mm * 10.0) );
2792
2793 if (pf.wAlignment == PFA_CENTER)
2794 style.SetAlignment(wxTEXT_ALIGNMENT_CENTRE);
2795 else if (pf.wAlignment == PFA_RIGHT)
2796 style.SetAlignment(wxTEXT_ALIGNMENT_RIGHT);
2797 else if (pf.wAlignment == PFA_JUSTIFY)
2798 style.SetAlignment(wxTEXT_ALIGNMENT_JUSTIFIED);
2799 else
2800 style.SetAlignment(wxTEXT_ALIGNMENT_LEFT);
2801
2802 wxArrayInt tabStops;
2803 size_t i;
2804 for (i = 0; i < (size_t) pf.cTabCount; i++)
2805 {
2806 tabStops.Add( (int) ((double) (pf.rgxTabs[i] & 0xFFFF) * twips2mm * 10.0) );
2807 }
2808
2809 if ( changeSel )
2810 {
2811 // restore the original selection
2812 DoSetSelection(startOld, endOld, false);
2813 }
2814
2815 return true;
2816 }
2817
2818 #endif
2819
2820 // ----------------------------------------------------------------------------
2821 // wxRichEditModule
2822 // ----------------------------------------------------------------------------
2823
2824 static const HINSTANCE INVALID_HINSTANCE = (HINSTANCE)-1;
2825
2826 bool wxRichEditModule::OnInit()
2827 {
2828 // don't do anything - we will load it when needed
2829 return true;
2830 }
2831
2832 void wxRichEditModule::OnExit()
2833 {
2834 for ( size_t i = 0; i < WXSIZEOF(ms_hRichEdit); i++ )
2835 {
2836 if ( ms_hRichEdit[i] && ms_hRichEdit[i] != INVALID_HINSTANCE )
2837 {
2838 ::FreeLibrary(ms_hRichEdit[i]);
2839 ms_hRichEdit[i] = NULL;
2840 }
2841 }
2842 #if wxUSE_INKEDIT
2843 if (ms_inkEditLib.IsLoaded())
2844 ms_inkEditLib.Unload();
2845 #endif
2846 }
2847
2848 /* static */
2849 bool wxRichEditModule::Load(Version version)
2850 {
2851 if ( ms_hRichEdit[version] == INVALID_HINSTANCE )
2852 {
2853 // we had already tried to load it and failed
2854 return false;
2855 }
2856
2857 if ( ms_hRichEdit[version] )
2858 {
2859 // we've already got this one
2860 return true;
2861 }
2862
2863 static const wxChar *dllnames[] =
2864 {
2865 _T("riched32"),
2866 _T("riched20"),
2867 _T("msftedit"),
2868 };
2869
2870 wxCOMPILE_TIME_ASSERT( WXSIZEOF(dllnames) == Version_Max,
2871 RichEditDllNamesVersionsMismatch );
2872
2873 ms_hRichEdit[version] = ::LoadLibrary(dllnames[version]);
2874
2875 if ( !ms_hRichEdit[version] )
2876 {
2877 ms_hRichEdit[version] = INVALID_HINSTANCE;
2878
2879 return false;
2880 }
2881
2882 return true;
2883 }
2884
2885 #if wxUSE_INKEDIT
2886 // load the InkEdit library
2887 bool wxRichEditModule::LoadInkEdit()
2888 {
2889 static wxDynamicLibrary ms_inkEditLib;
2890 static bool ms_inkEditLibLoadAttemped;
2891 if (ms_inkEditLibLoadAttemped)
2892 ms_inkEditLib.IsLoaded();
2893
2894 ms_inkEditLibLoadAttemped = true;
2895
2896 wxLogNull logNull;
2897 return ms_inkEditLib.Load(wxT("inked"));
2898 }
2899 #endif
2900
2901
2902 #endif // wxUSE_RICHEDIT
2903
2904 #endif // wxUSE_TEXTCTRL && !(__SMARTPHONE__ && __WXWINCE__)
wxWidgets (Impactor)