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