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Added wxBORDER_THEME, wxWindow::GetDefaultBorderForControl(), wxWindow::CanApplyTheme...
[wxWidgets.git] / src / msw / textctrl.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: src/msw/textctrl.cpp
3 // Purpose: wxTextCtrl
4 // Author: Julian Smart
5 // Modified by:
6 // Created: 04/01/98
7 // RCS-ID: $Id$
8 // Copyright: (c) Julian Smart
9 // Licence: wxWindows licence
10 /////////////////////////////////////////////////////////////////////////////
11
12 // ============================================================================
13 // declarations
14 // ============================================================================
15
16 // ----------------------------------------------------------------------------
17 // headers
18 // ----------------------------------------------------------------------------
19
20 // For compilers that support precompilation, includes "wx.h".
21 #include "wx/wxprec.h"
22
23 #ifdef __BORLANDC__
24 #pragma hdrstop
25 #endif
26
27 #if wxUSE_TEXTCTRL && !(defined(__SMARTPHONE__) && defined(__WXWINCE__))
28
29 #ifndef WX_PRECOMP
30 #include "wx/textctrl.h"
31 #include "wx/settings.h"
32 #include "wx/brush.h"
33 #include "wx/utils.h"
34 #include "wx/intl.h"
35 #include "wx/log.h"
36 #include "wx/app.h"
37 #include "wx/menu.h"
38 #include "wx/math.h"
39 #include "wx/module.h"
40 #include "wx/wxcrtvararg.h"
41 #endif
42
43 #include "wx/sysopt.h"
44
45 #if wxUSE_CLIPBOARD
46 #include "wx/clipbrd.h"
47 #endif
48
49 #include "wx/textfile.h"
50
51 #include <windowsx.h>
52
53 #include "wx/msw/private.h"
54 #include "wx/msw/winundef.h"
55 #include "wx/msw/mslu.h"
56
57 #include <string.h>
58 #include <stdlib.h>
59
60 #ifndef __WXWINCE__
61 #include <sys/types.h>
62 #endif
63
64 #if wxUSE_RICHEDIT
65
66 #if wxUSE_INKEDIT
67 #include "wx/dynlib.h"
68 #endif
69
70 // old mingw32 has richedit stuff directly in windows.h and doesn't have
71 // richedit.h at all
72 #if !defined(__GNUWIN32_OLD__) || defined(__CYGWIN10__)
73 #include <richedit.h>
74 #endif
75
76 #endif // wxUSE_RICHEDIT
77
78 #include "wx/msw/missing.h"
79
80 // ----------------------------------------------------------------------------
81 // private classes
82 // ----------------------------------------------------------------------------
83
84 #if wxUSE_RICHEDIT
85
86 // this module initializes RichEdit DLL(s) if needed
87 class wxRichEditModule : public wxModule
88 {
89 public:
90 enum Version
91 {
92 Version_1, // riched32.dll
93 Version_2or3, // both use riched20.dll
94 Version_41, // msftedit.dll (XP SP1 and Windows 2003)
95 Version_Max
96 };
97
98 virtual bool OnInit();
99 virtual void OnExit();
100
101 // load the richedit DLL for the specified version of rich edit
102 static bool Load(Version version);
103
104 #if wxUSE_INKEDIT
105 // load the InkEdit library
106 static bool LoadInkEdit();
107 #endif
108
109 private:
110 // the handles to richedit 1.0 and 2.0 (or 3.0) DLLs
111 static HINSTANCE ms_hRichEdit[Version_Max];
112
113 #if wxUSE_INKEDIT
114 static wxDynamicLibrary ms_inkEditLib;
115 static bool ms_inkEditLibLoadAttemped;
116 #endif
117
118 DECLARE_DYNAMIC_CLASS(wxRichEditModule)
119 };
120
121 HINSTANCE wxRichEditModule::ms_hRichEdit[Version_Max] = { NULL, NULL, NULL };
122
123 #if wxUSE_INKEDIT
124 wxDynamicLibrary wxRichEditModule::ms_inkEditLib;
125 bool wxRichEditModule::ms_inkEditLibLoadAttemped = false;
126 #endif
127
128 IMPLEMENT_DYNAMIC_CLASS(wxRichEditModule, wxModule)
129
130 #endif // wxUSE_RICHEDIT
131
132 // a small class used to set m_updatesCount to 0 (to filter duplicate events if
133 // necessary) and to reset it back to -1 afterwards
134 class UpdatesCountFilter
135 {
136 public:
137 UpdatesCountFilter(int& count)
138 : m_count(count)
139 {
140 wxASSERT_MSG( m_count == -1 || m_count == -2,
141 _T("wrong initial m_updatesCount value") );
142
143 if (m_count != -2)
144 m_count = 0;
145 //else: we don't want to count how many update events we get as we're going
146 // to ignore all of them
147 }
148
149 ~UpdatesCountFilter()
150 {
151 m_count = -1;
152 }
153
154 // return true if an event has been received
155 bool GotUpdate() const
156 {
157 return m_count == 1;
158 }
159
160 private:
161 int& m_count;
162
163 DECLARE_NO_COPY_CLASS(UpdatesCountFilter)
164 };
165
166 // ----------------------------------------------------------------------------
167 // event tables and other macros
168 // ----------------------------------------------------------------------------
169
170 #if wxUSE_EXTENDED_RTTI
171 WX_DEFINE_FLAGS( wxTextCtrlStyle )
172
173 wxBEGIN_FLAGS( wxTextCtrlStyle )
174 // new style border flags, we put them first to
175 // use them for streaming out
176 wxFLAGS_MEMBER(wxBORDER_SIMPLE)
177 wxFLAGS_MEMBER(wxBORDER_SUNKEN)
178 wxFLAGS_MEMBER(wxBORDER_DOUBLE)
179 wxFLAGS_MEMBER(wxBORDER_RAISED)
180 wxFLAGS_MEMBER(wxBORDER_STATIC)
181 wxFLAGS_MEMBER(wxBORDER_NONE)
182
183 // old style border flags
184 wxFLAGS_MEMBER(wxSIMPLE_BORDER)
185 wxFLAGS_MEMBER(wxSUNKEN_BORDER)
186 wxFLAGS_MEMBER(wxDOUBLE_BORDER)
187 wxFLAGS_MEMBER(wxRAISED_BORDER)
188 wxFLAGS_MEMBER(wxSTATIC_BORDER)
189 wxFLAGS_MEMBER(wxBORDER)
190
191 // standard window styles
192 wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
193 wxFLAGS_MEMBER(wxCLIP_CHILDREN)
194 wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
195 wxFLAGS_MEMBER(wxWANTS_CHARS)
196 wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
197 wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
198 wxFLAGS_MEMBER(wxVSCROLL)
199 wxFLAGS_MEMBER(wxHSCROLL)
200
201 wxFLAGS_MEMBER(wxTE_PROCESS_ENTER)
202 wxFLAGS_MEMBER(wxTE_PROCESS_TAB)
203 wxFLAGS_MEMBER(wxTE_MULTILINE)
204 wxFLAGS_MEMBER(wxTE_PASSWORD)
205 wxFLAGS_MEMBER(wxTE_READONLY)
206 wxFLAGS_MEMBER(wxHSCROLL)
207 wxFLAGS_MEMBER(wxTE_RICH)
208 wxFLAGS_MEMBER(wxTE_RICH2)
209 wxFLAGS_MEMBER(wxTE_AUTO_URL)
210 wxFLAGS_MEMBER(wxTE_NOHIDESEL)
211 wxFLAGS_MEMBER(wxTE_LEFT)
212 wxFLAGS_MEMBER(wxTE_CENTRE)
213 wxFLAGS_MEMBER(wxTE_RIGHT)
214 wxFLAGS_MEMBER(wxTE_DONTWRAP)
215 wxFLAGS_MEMBER(wxTE_CHARWRAP)
216 wxFLAGS_MEMBER(wxTE_WORDWRAP)
217
218 wxEND_FLAGS( wxTextCtrlStyle )
219
220 IMPLEMENT_DYNAMIC_CLASS_XTI(wxTextCtrl, wxControl,"wx/textctrl.h")
221
222 wxBEGIN_PROPERTIES_TABLE(wxTextCtrl)
223 wxEVENT_PROPERTY( TextUpdated , wxEVT_COMMAND_TEXT_UPDATED , wxCommandEvent )
224 wxEVENT_PROPERTY( TextEnter , wxEVT_COMMAND_TEXT_ENTER , wxCommandEvent )
225
226 wxPROPERTY( Font , wxFont , SetFont , GetFont , EMPTY_MACROVALUE, 0 /*flags*/ , wxT("Helpstring") , wxT("group") )
227 wxPROPERTY( Value , wxString , SetValue, GetValue, wxString() , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
228 wxPROPERTY_FLAGS( WindowStyle , wxTextCtrlStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
229 wxEND_PROPERTIES_TABLE()
230
231 wxBEGIN_HANDLERS_TABLE(wxTextCtrl)
232 wxEND_HANDLERS_TABLE()
233
234 wxCONSTRUCTOR_6( wxTextCtrl , wxWindow* , Parent , wxWindowID , Id , wxString , Value , wxPoint , Position , wxSize , Size , long , WindowStyle)
235 #else
236 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxTextCtrlBase)
237 #endif
238
239
240 BEGIN_EVENT_TABLE(wxTextCtrl, wxTextCtrlBase)
241 EVT_CHAR(wxTextCtrl::OnChar)
242 EVT_DROP_FILES(wxTextCtrl::OnDropFiles)
243
244 #if wxUSE_RICHEDIT
245 EVT_CONTEXT_MENU(wxTextCtrl::OnContextMenu)
246 #endif
247
248 EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
249 EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
250 EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
251 EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
252 EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
253 EVT_MENU(wxID_CLEAR, wxTextCtrl::OnDelete)
254 EVT_MENU(wxID_SELECTALL, wxTextCtrl::OnSelectAll)
255
256 EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
257 EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
258 EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
259 EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
260 EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
261 EVT_UPDATE_UI(wxID_CLEAR, wxTextCtrl::OnUpdateDelete)
262 EVT_UPDATE_UI(wxID_SELECTALL, wxTextCtrl::OnUpdateSelectAll)
263
264 EVT_SET_FOCUS(wxTextCtrl::OnSetFocus)
265 END_EVENT_TABLE()
266
267 // ============================================================================
268 // implementation
269 // ============================================================================
270
271 // ----------------------------------------------------------------------------
272 // creation
273 // ----------------------------------------------------------------------------
274
275 void wxTextCtrl::Init()
276 {
277 #if wxUSE_RICHEDIT
278 m_verRichEdit = 0;
279 #endif // wxUSE_RICHEDIT
280
281 #if wxUSE_INKEDIT && wxUSE_RICHEDIT
282 m_isInkEdit = 0;
283 #endif
284
285 m_privateContextMenu = NULL;
286 m_updatesCount = -1;
287 m_isNativeCaretShown = true;
288 }
289
290 wxTextCtrl::~wxTextCtrl()
291 {
292 delete m_privateContextMenu;
293 }
294
295 bool wxTextCtrl::Create(wxWindow *parent,
296 wxWindowID id,
297 const wxString& value,
298 const wxPoint& pos,
299 const wxSize& size,
300 long style,
301 const wxValidator& validator,
302 const wxString& name)
303 {
304 // base initialization
305 if ( !CreateControl(parent, id, pos, size, style, validator, name) )
306 return false;
307
308 if ( !MSWCreateText(value, pos, size) )
309 return false;
310
311 return true;
312 }
313
314 // returns true if the platform should explicitly apply a theme border
315 bool wxTextCtrl::CanApplyThemeBorder() const
316 {
317 #ifdef __WXWINCE__
318 return false;
319 #else
320 // Standard text control already handles theming
321 return ((GetWindowStyle() & (wxTE_RICH|wxTE_RICH2)) != 0);
322 #endif
323 }
324
325 bool wxTextCtrl::MSWCreateText(const wxString& value,
326 const wxPoint& pos,
327 const wxSize& size)
328 {
329 // translate wxWin style flags to MSW ones
330 WXDWORD msStyle = MSWGetCreateWindowFlags();
331
332 // do create the control - either an EDIT or RICHEDIT
333 wxString windowClass = wxT("EDIT");
334
335 #if defined(__POCKETPC__) || defined(__SMARTPHONE__)
336 // A control that capitalizes the first letter
337 if ( HasFlag(wxTE_CAPITALIZE) )
338 windowClass = wxT("CAPEDIT");
339 #endif
340
341 #if wxUSE_RICHEDIT
342 if ( m_windowStyle & wxTE_AUTO_URL )
343 {
344 // automatic URL detection only works in RichEdit 2.0+
345 m_windowStyle |= wxTE_RICH2;
346 }
347
348 if ( m_windowStyle & wxTE_RICH2 )
349 {
350 // using richedit 2.0 implies using wxTE_RICH
351 m_windowStyle |= wxTE_RICH;
352 }
353
354 // we need to load the richedit DLL before creating the rich edit control
355 if ( m_windowStyle & wxTE_RICH )
356 {
357 // versions 2.0, 3.0 and 4.1 of rich edit are mostly compatible with
358 // each other but not with version 1.0, so we have separate flags for
359 // the version 1.0 and the others (and so m_verRichEdit may be 0 (plain
360 // EDIT control), 1 for version 1.0 or 2 for any higher version)
361 //
362 // notice that 1.0 has no Unicode support at all so in Unicode build we
363 // must use another version
364
365 #if wxUSE_UNICODE
366 m_verRichEdit = 2;
367 #else // !wxUSE_UNICODE
368 m_verRichEdit = m_windowStyle & wxTE_RICH2 ? 2 : 1;
369 #endif // wxUSE_UNICODE/!wxUSE_UNICODE
370
371 #if wxUSE_INKEDIT
372 // First test if we can load an ink edit control. Normally, all edit
373 // controls will be made ink edit controls if a tablet environment is
374 // found (or if msw.inkedit != 0 and the InkEd.dll is present).
375 // However, an application can veto ink edit controls by either specifying
376 // msw.inkedit = 0 or by removing wxTE_RICH[2] from the style.
377 //
378 if ((wxSystemSettings::HasFeature(wxSYS_TABLET_PRESENT) || wxSystemOptions::GetOptionInt(wxT("msw.inkedit")) != 0) &&
379 !(wxSystemOptions::HasOption(wxT("msw.inkedit")) && wxSystemOptions::GetOptionInt(wxT("msw.inkedit")) == 0))
380 {
381 if (wxRichEditModule::LoadInkEdit())
382 {
383 windowClass = INKEDIT_CLASS;
384
385 #if wxUSE_INKEDIT && wxUSE_RICHEDIT
386 m_isInkEdit = 1;
387 #endif
388
389 // Fake rich text version for other calls
390 m_verRichEdit = 2;
391 }
392 }
393 #endif
394
395 if (!IsInkEdit())
396 {
397 if ( m_verRichEdit == 2 )
398 {
399 if ( wxRichEditModule::Load(wxRichEditModule::Version_41) )
400 {
401 // yes, class name for version 4.1 really is 5.0
402 windowClass = _T("RICHEDIT50W");
403 }
404 else if ( wxRichEditModule::Load(wxRichEditModule::Version_2or3) )
405 {
406 windowClass = _T("RichEdit20")
407 #if wxUSE_UNICODE
408 _T("W");
409 #else // ANSI
410 _T("A");
411 #endif // Unicode/ANSI
412 }
413 else // failed to load msftedit.dll and riched20.dll
414 {
415 m_verRichEdit = 1;
416 }
417 }
418
419 if ( m_verRichEdit == 1 )
420 {
421 if ( wxRichEditModule::Load(wxRichEditModule::Version_1) )
422 {
423 windowClass = _T("RICHEDIT");
424 }
425 else // failed to load any richedit control DLL
426 {
427 // only give the error msg once if the DLL can't be loaded
428 static bool s_errorGiven = false; // MT ok as only used by GUI
429
430 if ( !s_errorGiven )
431 {
432 wxLogError(_("Impossible to create a rich edit control, using simple text control instead. Please reinstall riched32.dll"));
433
434 s_errorGiven = true;
435 }
436
437 m_verRichEdit = 0;
438 }
439 }
440 } // !useInkEdit
441 }
442 #endif // wxUSE_RICHEDIT
443
444 // we need to turn '\n's into "\r\n"s for the multiline controls
445 wxString valueWin;
446 if ( m_windowStyle & wxTE_MULTILINE )
447 {
448 valueWin = wxTextFile::Translate(value, wxTextFileType_Dos);
449 }
450 else // single line
451 {
452 valueWin = value;
453 }
454
455 if ( !MSWCreateControl(windowClass.wx_str(), msStyle, pos, size, valueWin) )
456 return false;
457
458 #if wxUSE_RICHEDIT
459 if (IsRich())
460 {
461 #if wxUSE_INKEDIT
462 if (IsInkEdit())
463 {
464 // Pass IEM_InsertText (0) as wParam, in order to have the ink always
465 // converted to text.
466 ::SendMessage(GetHwnd(), EM_SETINKINSERTMODE, 0, 0);
467
468 // Make sure the mouse can be used for input
469 ::SendMessage(GetHwnd(), EM_SETUSEMOUSEFORINPUT, 1, 0);
470 }
471 #endif
472
473 // enable the events we're interested in: we want to get EN_CHANGE as
474 // for the normal controls
475 LPARAM mask = ENM_CHANGE;
476
477 if (GetRichVersion() == 1 && !IsInkEdit())
478 {
479 // we also need EN_MSGFILTER for richedit 1.0 for the reasons
480 // explained in its handler
481 mask |= ENM_MOUSEEVENTS;
482
483 // we also need to force the appearance of the vertical scrollbar
484 // initially as otherwise the control doesn't refresh correctly
485 // after resize: but once the vertical scrollbar had been shown
486 // (even if it's subsequently hidden) it does
487 //
488 // this is clearly a bug and for now it has been only noticed under
489 // Windows XP, so if we're sure it works correctly under other
490 // systems we could do this only for XP
491 SetSize(-1, 1); // 1 is small enough to force vert scrollbar
492 SetInitialSize(size);
493 }
494 else if ( m_windowStyle & wxTE_AUTO_URL )
495 {
496 mask |= ENM_LINK;
497
498 ::SendMessage(GetHwnd(), EM_AUTOURLDETECT, TRUE, 0);
499 }
500
501 ::SendMessage(GetHwnd(), EM_SETEVENTMASK, 0, mask);
502 }
503 #endif // wxUSE_RICHEDIT
504
505 return true;
506 }
507
508 // Make sure the window style (etc.) reflects the HWND style (roughly)
509 void wxTextCtrl::AdoptAttributesFromHWND()
510 {
511 wxWindow::AdoptAttributesFromHWND();
512
513 HWND hWnd = GetHwnd();
514 long style = ::GetWindowLong(hWnd, GWL_STYLE);
515
516 // retrieve the style to see whether this is an edit or richedit ctrl
517 #if wxUSE_RICHEDIT
518 wxString classname = wxGetWindowClass(GetHWND());
519
520 if ( classname.IsSameAs(_T("EDIT"), false /* no case */) )
521 {
522 m_verRichEdit = 0;
523 }
524 else // rich edit?
525 {
526 wxChar c;
527 if ( wxSscanf(classname, _T("RichEdit%d0%c"), &m_verRichEdit, &c) != 2 )
528 {
529 wxLogDebug(_T("Unknown edit control '%s'."), classname.c_str());
530
531 m_verRichEdit = 0;
532 }
533 }
534 #endif // wxUSE_RICHEDIT
535
536 if (style & ES_MULTILINE)
537 m_windowStyle |= wxTE_MULTILINE;
538 if (style & ES_PASSWORD)
539 m_windowStyle |= wxTE_PASSWORD;
540 if (style & ES_READONLY)
541 m_windowStyle |= wxTE_READONLY;
542 if (style & ES_WANTRETURN)
543 m_windowStyle |= wxTE_PROCESS_ENTER;
544 if (style & ES_CENTER)
545 m_windowStyle |= wxTE_CENTRE;
546 if (style & ES_RIGHT)
547 m_windowStyle |= wxTE_RIGHT;
548 }
549
550 WXDWORD wxTextCtrl::MSWGetStyle(long style, WXDWORD *exstyle) const
551 {
552 long msStyle = wxControl::MSWGetStyle(style, exstyle);
553
554 // styles which we alaways add by default
555 if ( style & wxTE_MULTILINE )
556 {
557 msStyle |= ES_MULTILINE | ES_WANTRETURN;
558 if ( !(style & wxTE_NO_VSCROLL) )
559 {
560 // always adjust the vertical scrollbar automatically if we have it
561 msStyle |= WS_VSCROLL | ES_AUTOVSCROLL;
562
563 #if wxUSE_RICHEDIT
564 // we have to use this style for the rich edit controls because
565 // without it the vertical scrollbar never appears at all in
566 // richedit 3.0 because of our ECO_NOHIDESEL hack (search for it)
567 if ( style & wxTE_RICH2 )
568 {
569 msStyle |= ES_DISABLENOSCROLL;
570 }
571 #endif // wxUSE_RICHEDIT
572 }
573
574 style |= wxTE_PROCESS_ENTER;
575 }
576 else // !multiline
577 {
578 // there is really no reason to not have this style for single line
579 // text controls
580 msStyle |= ES_AUTOHSCROLL;
581 }
582
583 // note that wxTE_DONTWRAP is the same as wxHSCROLL so if we have a horz
584 // scrollbar, there is no wrapping -- which makes sense
585 if ( style & wxTE_DONTWRAP )
586 {
587 // automatically scroll the control horizontally as necessary
588 //
589 // NB: ES_AUTOHSCROLL is needed for richedit controls or they don't
590 // show horz scrollbar at all, even in spite of WS_HSCROLL, and as
591 // it doesn't seem to do any harm for plain edit controls, add it
592 // always
593 msStyle |= WS_HSCROLL | ES_AUTOHSCROLL;
594 }
595
596 if ( style & wxTE_READONLY )
597 msStyle |= ES_READONLY;
598
599 if ( style & wxTE_PASSWORD )
600 msStyle |= ES_PASSWORD;
601
602 if ( style & wxTE_NOHIDESEL )
603 msStyle |= ES_NOHIDESEL;
604
605 // note that we can't do do "& wxTE_LEFT" as wxTE_LEFT == 0
606 if ( style & wxTE_CENTRE )
607 msStyle |= ES_CENTER;
608 else if ( style & wxTE_RIGHT )
609 msStyle |= ES_RIGHT;
610 else
611 msStyle |= ES_LEFT; // ES_LEFT is 0 as well but for consistency...
612
613 return msStyle;
614 }
615
616 void wxTextCtrl::SetWindowStyleFlag(long style)
617 {
618 // changing the alignment of the control dynamically works under Win2003
619 // (but not older Windows version: it seems to work under some versions of
620 // XP but not other ones, and we have no way to determine it so be
621 // conservative here) and only for plain EDIT controls (not RICH ones) and
622 // we have to recreate the control to make it always work
623 if ( IsRich() || wxGetWinVersion() < wxWinVersion_2003 )
624 {
625 const long alignMask = wxTE_LEFT | wxTE_CENTRE | wxTE_RIGHT;
626 if ( (style & alignMask) != (GetWindowStyle() & alignMask) )
627 {
628 const wxString value = GetValue();
629 const wxPoint pos = GetPosition();
630 const wxSize size = GetSize();
631
632 // delete the old window
633 HWND hwnd = GetHwnd();
634 DissociateHandle();
635 ::DestroyWindow(hwnd);
636
637 // create the new one with the updated flags
638 m_windowStyle = style;
639 MSWCreateText(value, pos, size);
640
641 // and make sure it has the same attributes as before
642 if ( m_hasFont )
643 {
644 // calling SetFont(m_font) would do nothing as the code would
645 // notice that the font didn't change, so force it to believe
646 // that it did
647 wxFont font = m_font;
648 m_font = wxNullFont;
649 SetFont(font);
650 }
651
652 if ( m_hasFgCol )
653 {
654 wxColour colFg = m_foregroundColour;
655 m_foregroundColour = wxNullColour;
656 SetForegroundColour(colFg);
657 }
658
659 if ( m_hasBgCol )
660 {
661 wxColour colBg = m_backgroundColour;
662 m_backgroundColour = wxNullColour;
663 SetBackgroundColour(colBg);
664 }
665
666 // note that text styles are lost but this is probably not a big
667 // problem: if you use styles, you probably don't use nor change
668 // alignment flags anyhow
669
670 return;
671 }
672 }
673
674 #if wxUSE_RICHEDIT
675 // we have to deal with some styles separately because they can't be
676 // changed by simply calling SetWindowLong(GWL_STYLE) but can be changed
677 // using richedit-specific EM_SETOPTIONS
678 if ( IsRich() &&
679 ((style & wxTE_NOHIDESEL) != (GetWindowStyle() & wxTE_NOHIDESEL)) )
680 {
681 bool set = (style & wxTE_NOHIDESEL) != 0;
682
683 ::SendMessage(GetHwnd(), EM_SETOPTIONS, set ? ECOOP_OR : ECOOP_AND,
684 set ? ECO_NOHIDESEL : ~ECO_NOHIDESEL);
685 }
686 #endif // wxUSE_RICHEDIT
687
688 wxControl::SetWindowStyleFlag(style);
689 }
690
691 // ----------------------------------------------------------------------------
692 // set/get the controls text
693 // ----------------------------------------------------------------------------
694
695 bool wxTextCtrl::IsEmpty() const
696 {
697 // this is an optimization for multiline controls containing a lot of text
698 if ( IsMultiLine() && GetNumberOfLines() != 1 )
699 return false;
700
701 return wxTextCtrlBase::IsEmpty();
702 }
703
704 wxString wxTextCtrl::GetValue() const
705 {
706 // range 0..-1 is special for GetRange() and means to retrieve all text
707 return GetRange(0, -1);
708 }
709
710 wxString wxTextCtrl::GetRange(long from, long to) const
711 {
712 wxString str;
713
714 if ( from >= to && to != -1 )
715 {
716 // nothing to retrieve
717 return str;
718 }
719
720 #if wxUSE_RICHEDIT
721 if ( IsRich() )
722 {
723 int len = GetWindowTextLength(GetHwnd());
724 if ( len > from )
725 {
726 if ( to == -1 )
727 to = len;
728
729 #if !wxUSE_UNICODE
730 // we must use EM_STREAMOUT if we don't want to lose all characters
731 // not representable in the current character set (EM_GETTEXTRANGE
732 // simply replaces them with question marks...)
733 if ( GetRichVersion() > 1 )
734 {
735 // we must have some encoding, otherwise any 8bit chars in the
736 // control are simply *lost* (replaced by '?')
737 wxFontEncoding encoding = wxFONTENCODING_SYSTEM;
738
739 wxFont font = m_defaultStyle.GetFont();
740 if ( !font.Ok() )
741 font = GetFont();
742
743 if ( font.Ok() )
744 {
745 encoding = font.GetEncoding();
746 }
747
748 if ( encoding == wxFONTENCODING_SYSTEM )
749 {
750 encoding = wxLocale::GetSystemEncoding();
751 }
752
753 if ( encoding == wxFONTENCODING_SYSTEM )
754 {
755 encoding = wxFONTENCODING_ISO8859_1;
756 }
757
758 str = StreamOut(encoding);
759
760 if ( !str.empty() )
761 {
762 // we have to manually extract the required part, luckily
763 // this is easy in this case as EOL characters in str are
764 // just LFs because we remove CRs in wxRichEditStreamOut
765 str = str.Mid(from, to - from);
766 }
767 }
768
769 // StreamOut() wasn't used or failed, try to do it in normal way
770 if ( str.empty() )
771 #endif // !wxUSE_UNICODE
772 {
773 // alloc one extra WORD as needed by the control
774 wxStringBuffer tmp(str, ++len);
775 wxChar *p = tmp;
776
777 TEXTRANGE textRange;
778 textRange.chrg.cpMin = from;
779 textRange.chrg.cpMax = to;
780 textRange.lpstrText = p;
781
782 (void)::SendMessage(GetHwnd(), EM_GETTEXTRANGE,
783 0, (LPARAM)&textRange);
784
785 if ( m_verRichEdit > 1 )
786 {
787 // RichEdit 2.0 uses just CR ('\r') for the
788 // newlines which is neither Unix nor Windows
789 // style - convert it to something reasonable
790 for ( ; *p; p++ )
791 {
792 if ( *p == _T('\r') )
793 *p = _T('\n');
794 }
795 }
796 }
797
798 if ( m_verRichEdit == 1 )
799 {
800 // convert to the canonical form - see comment below
801 str = wxTextFile::Translate(str, wxTextFileType_Unix);
802 }
803 }
804 //else: no text at all, leave the string empty
805 }
806 else
807 #endif // wxUSE_RICHEDIT
808 {
809 // retrieve all text
810 str = wxGetWindowText(GetHWND());
811
812 // need only a range?
813 if ( from < to )
814 {
815 str = str.Mid(from, to - from);
816 }
817
818 // WM_GETTEXT uses standard DOS CR+LF (\r\n) convention - convert to the
819 // canonical one (same one as above) for consistency with the other kinds
820 // of controls and, more importantly, with the other ports
821 str = wxTextFile::Translate(str, wxTextFileType_Unix);
822 }
823
824 return str;
825 }
826
827 void wxTextCtrl::DoSetValue(const wxString& value, int flags)
828 {
829 // if the text is long enough, it's faster to just set it instead of first
830 // comparing it with the old one (chances are that it will be different
831 // anyhow, this comparison is there to avoid flicker for small single-line
832 // edit controls mostly)
833 if ( (value.length() > 0x400) || (value != GetValue()) )
834 {
835 DoWriteText(value, flags /* doesn't include SelectionOnly here */);
836
837 // mark the control as being not dirty - we changed its text, not the
838 // user
839 DiscardEdits();
840
841 // for compatibility, don't move the cursor when doing SetValue()
842 SetInsertionPoint(0);
843 }
844 else // same text
845 {
846 // still reset the modified flag even if the value didn't really change
847 // because now it comes from the program and not the user (and do it
848 // before generating the event so that the event handler could get the
849 // expected value from IsModified())
850 DiscardEdits();
851
852 // still send an event for consistency
853 if (flags & SetValue_SendEvent)
854 SendUpdateEvent();
855 }
856 }
857
858 #if wxUSE_RICHEDIT && (!wxUSE_UNICODE || wxUSE_UNICODE_MSLU)
859
860 // TODO: using memcpy() would improve performance a lot for big amounts of text
861
862 DWORD CALLBACK
863 wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb)
864 {
865 *pcb = 0;
866
867 const wchar_t ** const ppws = (const wchar_t **)dwCookie;
868
869 wchar_t *wbuf = (wchar_t *)buf;
870 const wchar_t *wpc = *ppws;
871 while ( cb && *wpc )
872 {
873 *wbuf++ = *wpc++;
874
875 cb -= sizeof(wchar_t);
876 (*pcb) += sizeof(wchar_t);
877 }
878
879 *ppws = wpc;
880
881 return 0;
882 }
883
884 // helper struct used to pass parameters from wxTextCtrl to wxRichEditStreamOut
885 struct wxStreamOutData
886 {
887 wchar_t *wpc;
888 size_t len;
889 };
890
891 DWORD CALLBACK
892 wxRichEditStreamOut(DWORD_PTR dwCookie, BYTE *buf, LONG cb, LONG *pcb)
893 {
894 *pcb = 0;
895
896 wxStreamOutData *data = (wxStreamOutData *)dwCookie;
897
898 const wchar_t *wbuf = (const wchar_t *)buf;
899 wchar_t *wpc = data->wpc;
900 while ( cb )
901 {
902 wchar_t wch = *wbuf++;
903
904 // turn "\r\n" into "\n" on the fly
905 if ( wch != L'\r' )
906 *wpc++ = wch;
907 else
908 data->len--;
909
910 cb -= sizeof(wchar_t);
911 (*pcb) += sizeof(wchar_t);
912 }
913
914 data->wpc = wpc;
915
916 return 0;
917 }
918
919
920 #if wxUSE_UNICODE_MSLU
921 #define UNUSED_IF_MSLU(param)
922 #else
923 #define UNUSED_IF_MSLU(param) param
924 #endif
925
926 bool
927 wxTextCtrl::StreamIn(const wxString& value,
928 wxFontEncoding UNUSED_IF_MSLU(encoding),
929 bool selectionOnly)
930 {
931 #if wxUSE_UNICODE_MSLU
932 const wchar_t *wpc = value.c_str();
933 #else // !wxUSE_UNICODE_MSLU
934 wxCSConv conv(encoding);
935
936 const size_t len = conv.MB2WC(NULL, value.mb_str(), value.length());
937
938 #if wxUSE_WCHAR_T
939 wxWCharBuffer wchBuf(len);
940 wchar_t *wpc = wchBuf.data();
941 #else
942 wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
943 wchar_t *wpc = wchBuf;
944 #endif
945
946 conv.MB2WC(wpc, value.mb_str(), value.length());
947 #endif // wxUSE_UNICODE_MSLU
948
949 // finally, stream it in the control
950 EDITSTREAM eds;
951 wxZeroMemory(eds);
952 eds.dwCookie = (DWORD)&wpc;
953 // the cast below is needed for broken (very) old mingw32 headers
954 eds.pfnCallback = (EDITSTREAMCALLBACK)wxRichEditStreamIn;
955
956 // same problem as in DoWriteText(): we can get multiple events here
957 UpdatesCountFilter ucf(m_updatesCount);
958
959 ::SendMessage(GetHwnd(), EM_STREAMIN,
960 SF_TEXT |
961 SF_UNICODE |
962 (selectionOnly ? SFF_SELECTION : 0),
963 (LPARAM)&eds);
964
965 // It's okay for EN_UPDATE to not be sent if the selection is empty and
966 // the text is empty, otherwise warn the programmer about it.
967 wxASSERT_MSG( ucf.GotUpdate() || ( !HasSelection() && value.empty() ),
968 _T("EM_STREAMIN didn't send EN_UPDATE?") );
969
970 if ( eds.dwError )
971 {
972 wxLogLastError(_T("EM_STREAMIN"));
973 }
974
975 #if !wxUSE_WCHAR_T
976 free(wchBuf);
977 #endif // !wxUSE_WCHAR_T
978
979 return true;
980 }
981
982 #if !wxUSE_UNICODE_MSLU
983
984 wxString
985 wxTextCtrl::StreamOut(wxFontEncoding encoding, bool selectionOnly) const
986 {
987 wxString out;
988
989 const int len = GetWindowTextLength(GetHwnd());
990
991 #if wxUSE_WCHAR_T
992 wxWCharBuffer wchBuf(len);
993 wchar_t *wpc = wchBuf.data();
994 #else
995 wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
996 wchar_t *wpc = wchBuf;
997 #endif
998
999 wxStreamOutData data;
1000 data.wpc = wpc;
1001 data.len = len;
1002
1003 EDITSTREAM eds;
1004 wxZeroMemory(eds);
1005 eds.dwCookie = (DWORD)&data;
1006 eds.pfnCallback = wxRichEditStreamOut;
1007
1008 ::SendMessage
1009 (
1010 GetHwnd(),
1011 EM_STREAMOUT,
1012 SF_TEXT | SF_UNICODE | (selectionOnly ? SFF_SELECTION : 0),
1013 (LPARAM)&eds
1014 );
1015
1016 if ( eds.dwError )
1017 {
1018 wxLogLastError(_T("EM_STREAMOUT"));
1019 }
1020 else // streamed out ok
1021 {
1022 // NUL-terminate the string because its length could have been
1023 // decreased by wxRichEditStreamOut
1024 *(wchBuf.data() + data.len) = L'\0';
1025
1026 // now convert to the given encoding (this is a possibly lossful
1027 // conversion but what else can we do)
1028 wxCSConv conv(encoding);
1029 size_t lenNeeded = conv.WC2MB(NULL, wchBuf, 0);
1030 if ( lenNeeded++ )
1031 {
1032 conv.WC2MB(wxStringBuffer(out, lenNeeded), wchBuf, lenNeeded);
1033 }
1034 }
1035
1036 #if !wxUSE_WCHAR_T
1037 free(wchBuf);
1038 #endif // !wxUSE_WCHAR_T
1039
1040 return out;
1041 }
1042
1043 #endif // !wxUSE_UNICODE_MSLU
1044
1045 #endif // wxUSE_RICHEDIT
1046
1047 void wxTextCtrl::WriteText(const wxString& value)
1048 {
1049 DoWriteText(value);
1050 }
1051
1052 void wxTextCtrl::DoWriteText(const wxString& value, int flags)
1053 {
1054 bool selectionOnly = (flags & SetValue_SelectionOnly) != 0;
1055 wxString valueDos;
1056 if ( m_windowStyle & wxTE_MULTILINE )
1057 valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
1058 else
1059 valueDos = value;
1060
1061 #if wxUSE_RICHEDIT
1062 // there are several complications with the rich edit controls here
1063 bool done = false;
1064 if ( IsRich() )
1065 {
1066 // first, ensure that the new text will be in the default style
1067 if ( !m_defaultStyle.IsDefault() )
1068 {
1069 long start, end;
1070 GetSelection(&start, &end);
1071 SetStyle(start, end, m_defaultStyle);
1072 }
1073
1074 #if wxUSE_UNICODE_MSLU
1075 // RichEdit doesn't have Unicode version of EM_REPLACESEL on Win9x,
1076 // but EM_STREAMIN works
1077 if ( wxUsingUnicowsDll() && GetRichVersion() > 1 )
1078 {
1079 done = StreamIn(valueDos, wxFONTENCODING_SYSTEM, selectionOnly);
1080 }
1081 #endif // wxUSE_UNICODE_MSLU
1082
1083 #if !wxUSE_UNICODE
1084 // next check if the text we're inserting must be shown in a non
1085 // default charset -- this only works for RichEdit > 1.0
1086 if ( GetRichVersion() > 1 )
1087 {
1088 wxFont font = m_defaultStyle.GetFont();
1089 if ( !font.Ok() )
1090 font = GetFont();
1091
1092 if ( font.Ok() )
1093 {
1094 wxFontEncoding encoding = font.GetEncoding();
1095 if ( encoding != wxFONTENCODING_SYSTEM )
1096 {
1097 // we have to use EM_STREAMIN to force richedit control 2.0+
1098 // to show any text in the non default charset -- otherwise
1099 // it thinks it knows better than we do and always shows it
1100 // in the default one
1101 done = StreamIn(valueDos, encoding, selectionOnly);
1102 }
1103 }
1104 }
1105 #endif // !wxUSE_UNICODE
1106 }
1107
1108 if ( !done )
1109 #endif // wxUSE_RICHEDIT
1110 {
1111 // in some cases we get 2 EN_CHANGE notifications after the SendMessage
1112 // call (this happens for plain EDITs with EM_REPLACESEL and under some
1113 // -- undetermined -- conditions with rich edit) and sometimes we don't
1114 // get any events at all (plain EDIT with WM_SETTEXT), so ensure that
1115 // we generate exactly one of them by ignoring all but the first one in
1116 // SendUpdateEvent() and generating one ourselves if we hadn't got any
1117 // notifications from Windows
1118 if ( !(flags & SetValue_SendEvent) )
1119 m_updatesCount = -2; // suppress any update event
1120
1121 UpdatesCountFilter ucf(m_updatesCount);
1122
1123 ::SendMessage(GetHwnd(), selectionOnly ? EM_REPLACESEL : WM_SETTEXT,
1124 // EM_REPLACESEL takes 1 to indicate the operation should be redoable
1125 selectionOnly ? 1 : 0, (LPARAM)valueDos.wx_str());
1126
1127 if ( !ucf.GotUpdate() && (flags & SetValue_SendEvent) )
1128 {
1129 SendUpdateEvent();
1130 }
1131 }
1132 }
1133
1134 void wxTextCtrl::AppendText(const wxString& text)
1135 {
1136 SetInsertionPointEnd();
1137
1138 WriteText(text);
1139
1140 #if wxUSE_RICHEDIT
1141 // don't do this if we're frozen, saves some time
1142 if ( !IsFrozen() && IsMultiLine() && GetRichVersion() > 1 )
1143 {
1144 // setting the caret to the end and showing it simply doesn't work for
1145 // RichEdit 2.0 -- force it to still do what we want
1146 ::SendMessage(GetHwnd(), EM_LINESCROLL, 0, GetNumberOfLines());
1147 }
1148 #endif // wxUSE_RICHEDIT
1149 }
1150
1151 void wxTextCtrl::Clear()
1152 {
1153 ::SetWindowText(GetHwnd(), wxEmptyString);
1154
1155 #if wxUSE_RICHEDIT
1156 if ( !IsRich() )
1157 #endif // wxUSE_RICHEDIT
1158 {
1159 // rich edit controls send EN_UPDATE from WM_SETTEXT handler themselves
1160 // but the normal ones don't -- make Clear() behaviour consistent by
1161 // always sending this event
1162
1163 // Windows already sends an update event for single-line
1164 // controls.
1165 if ( m_windowStyle & wxTE_MULTILINE )
1166 SendUpdateEvent();
1167 }
1168 }
1169
1170 #ifdef __WIN32__
1171
1172 bool wxTextCtrl::EmulateKeyPress(const wxKeyEvent& event)
1173 {
1174 SetFocus();
1175
1176 size_t lenOld = GetValue().length();
1177
1178 wxUint32 code = event.GetRawKeyCode();
1179 ::keybd_event((BYTE)code, 0, 0 /* key press */, 0);
1180 ::keybd_event((BYTE)code, 0, KEYEVENTF_KEYUP, 0);
1181
1182 // assume that any alphanumeric key changes the total number of characters
1183 // in the control - this should work in 99% of cases
1184 return GetValue().length() != lenOld;
1185 }
1186
1187 #endif // __WIN32__
1188
1189 // ----------------------------------------------------------------------------
1190 // Clipboard operations
1191 // ----------------------------------------------------------------------------
1192
1193 void wxTextCtrl::Copy()
1194 {
1195 if (CanCopy())
1196 {
1197 ::SendMessage(GetHwnd(), WM_COPY, 0, 0L);
1198 }
1199 }
1200
1201 void wxTextCtrl::Cut()
1202 {
1203 if (CanCut())
1204 {
1205 ::SendMessage(GetHwnd(), WM_CUT, 0, 0L);
1206 }
1207 }
1208
1209 void wxTextCtrl::Paste()
1210 {
1211 if (CanPaste())
1212 {
1213 ::SendMessage(GetHwnd(), WM_PASTE, 0, 0L);
1214 }
1215 }
1216
1217 bool wxTextCtrl::HasSelection() const
1218 {
1219 long from, to;
1220 GetSelection(&from, &to);
1221 return from != to;
1222 }
1223
1224 bool wxTextCtrl::CanCopy() const
1225 {
1226 // Can copy if there's a selection
1227 return HasSelection();
1228 }
1229
1230 bool wxTextCtrl::CanCut() const
1231 {
1232 return CanCopy() && IsEditable();
1233 }
1234
1235 bool wxTextCtrl::CanPaste() const
1236 {
1237 if ( !IsEditable() )
1238 return false;
1239
1240 #if wxUSE_RICHEDIT
1241 if ( IsRich() )
1242 {
1243 UINT cf = 0; // 0 == any format
1244
1245 return ::SendMessage(GetHwnd(), EM_CANPASTE, cf, 0) != 0;
1246 }
1247 #endif // wxUSE_RICHEDIT
1248
1249 // Standard edit control: check for straight text on clipboard
1250 if ( !::OpenClipboard(GetHwndOf(wxTheApp->GetTopWindow())) )
1251 return false;
1252
1253 bool isTextAvailable = ::IsClipboardFormatAvailable(CF_TEXT) != 0;
1254 ::CloseClipboard();
1255
1256 return isTextAvailable;
1257 }
1258
1259 // ----------------------------------------------------------------------------
1260 // Accessors
1261 // ----------------------------------------------------------------------------
1262
1263 void wxTextCtrl::SetEditable(bool editable)
1264 {
1265 HWND hWnd = GetHwnd();
1266 ::SendMessage(hWnd, EM_SETREADONLY, (WPARAM)!editable, (LPARAM)0L);
1267 }
1268
1269 void wxTextCtrl::SetInsertionPoint(long pos)
1270 {
1271 DoSetSelection(pos, pos);
1272 }
1273
1274 void wxTextCtrl::SetInsertionPointEnd()
1275 {
1276 // we must not do anything if the caret is already there because calling
1277 // SetInsertionPoint() thaws the controls if Freeze() had been called even
1278 // if it doesn't actually move the caret anywhere and so the simple fact of
1279 // doing it results in horrible flicker when appending big amounts of text
1280 // to the control in a few chunks (see DoAddText() test in the text sample)
1281 const wxTextPos lastPosition = GetLastPosition();
1282 if ( GetInsertionPoint() == lastPosition )
1283 {
1284 return;
1285 }
1286
1287 long pos;
1288
1289 #if wxUSE_RICHEDIT
1290 if ( m_verRichEdit == 1 )
1291 {
1292 // we don't have to waste time calling GetLastPosition() in this case
1293 pos = -1;
1294 }
1295 else // !RichEdit 1.0
1296 #endif // wxUSE_RICHEDIT
1297 {
1298 pos = lastPosition;
1299 }
1300
1301 SetInsertionPoint(pos);
1302 }
1303
1304 long wxTextCtrl::GetInsertionPoint() const
1305 {
1306 #if wxUSE_RICHEDIT
1307 if ( IsRich() )
1308 {
1309 CHARRANGE range;
1310 range.cpMin = 0;
1311 range.cpMax = 0;
1312 ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
1313 return range.cpMin;
1314 }
1315 #endif // wxUSE_RICHEDIT
1316
1317 DWORD Pos = (DWORD)::SendMessage(GetHwnd(), EM_GETSEL, 0, 0L);
1318 return Pos & 0xFFFF;
1319 }
1320
1321 wxTextPos wxTextCtrl::GetLastPosition() const
1322 {
1323 int numLines = GetNumberOfLines();
1324 long posStartLastLine = XYToPosition(0, numLines - 1);
1325
1326 long lenLastLine = GetLengthOfLineContainingPos(posStartLastLine);
1327
1328 return posStartLastLine + lenLastLine;
1329 }
1330
1331 // If the return values from and to are the same, there is no
1332 // selection.
1333 void wxTextCtrl::GetSelection(long* from, long* to) const
1334 {
1335 #if wxUSE_RICHEDIT
1336 if ( IsRich() )
1337 {
1338 CHARRANGE charRange;
1339 ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &charRange);
1340
1341 *from = charRange.cpMin;
1342 *to = charRange.cpMax;
1343 }
1344 else
1345 #endif // !wxUSE_RICHEDIT
1346 {
1347 DWORD dwStart, dwEnd;
1348 ::SendMessage(GetHwnd(), EM_GETSEL, (WPARAM)&dwStart, (LPARAM)&dwEnd);
1349
1350 *from = dwStart;
1351 *to = dwEnd;
1352 }
1353 }
1354
1355 bool wxTextCtrl::IsEditable() const
1356 {
1357 // strangely enough, we may be called before the control is created: our
1358 // own Create() calls MSWGetStyle() which calls AcceptsFocus() which calls
1359 // us
1360 if ( !m_hWnd )
1361 return true;
1362
1363 long style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1364
1365 return (style & ES_READONLY) == 0;
1366 }
1367
1368 // ----------------------------------------------------------------------------
1369 // selection
1370 // ----------------------------------------------------------------------------
1371
1372 void wxTextCtrl::SetSelection(long from, long to)
1373 {
1374 // if from and to are both -1, it means (in wxWidgets) that all text should
1375 // be selected - translate into Windows convention
1376 if ( (from == -1) && (to == -1) )
1377 {
1378 from = 0;
1379 to = -1;
1380 }
1381
1382 DoSetSelection(from, to);
1383 }
1384
1385 void wxTextCtrl::DoSetSelection(long from, long to, bool scrollCaret)
1386 {
1387 HWND hWnd = GetHwnd();
1388
1389 #if wxUSE_RICHEDIT
1390 if ( IsRich() )
1391 {
1392 CHARRANGE range;
1393 range.cpMin = from;
1394 range.cpMax = to;
1395 ::SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM) &range);
1396 }
1397 else
1398 #endif // wxUSE_RICHEDIT
1399 {
1400 ::SendMessage(hWnd, EM_SETSEL, (WPARAM)from, (LPARAM)to);
1401 }
1402
1403 if ( scrollCaret && !IsFrozen() )
1404 {
1405 #if wxUSE_RICHEDIT
1406 // richedit 3.0 (i.e. the version living in riched20.dll distributed
1407 // with Windows 2000 and beyond) doesn't honour EM_SCROLLCARET when
1408 // emulating richedit 2.0 unless the control has focus or ECO_NOHIDESEL
1409 // option is set (but it does work ok in richedit 1.0 mode...)
1410 //
1411 // so to make it work we either need to give focus to it here which
1412 // will probably create many problems (dummy focus events; window
1413 // containing the text control being brought to foreground
1414 // unexpectedly; ...) or to temporarily set ECO_NOHIDESEL which may
1415 // create other problems too -- and in fact it does because if we turn
1416 // on/off this style while appending the text to the control, the
1417 // vertical scrollbar never appears in it even if we append tons of
1418 // text and to work around this the only solution I found was to use
1419 // ES_DISABLENOSCROLL
1420 //
1421 // this is very ugly but I don't see any other way to make this work
1422 long style = 0;
1423 if ( GetRichVersion() > 1 )
1424 {
1425 if ( !HasFlag(wxTE_NOHIDESEL) )
1426 {
1427 // setting ECO_NOHIDESEL also sets WS_VISIBLE and possibly
1428 // others, remember the style so we can reset it later if needed
1429 style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1430 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1431 ECOOP_OR, ECO_NOHIDESEL);
1432 }
1433 //else: everything is already ok
1434 }
1435 #endif // wxUSE_RICHEDIT
1436
1437 ::SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
1438
1439 #if wxUSE_RICHEDIT
1440 // restore ECO_NOHIDESEL if we changed it
1441 if ( GetRichVersion() > 1 && !HasFlag(wxTE_NOHIDESEL) )
1442 {
1443 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1444 ECOOP_AND, ~ECO_NOHIDESEL);
1445 if ( style != ::GetWindowLong(GetHwnd(), GWL_STYLE) )
1446 ::SetWindowLong(GetHwnd(), GWL_STYLE, style);
1447 }
1448 #endif // wxUSE_RICHEDIT
1449 }
1450 }
1451
1452 // ----------------------------------------------------------------------------
1453 // Working with files
1454 // ----------------------------------------------------------------------------
1455
1456 bool wxTextCtrl::DoLoadFile(const wxString& file, int fileType)
1457 {
1458 if ( wxTextCtrlBase::DoLoadFile(file, fileType) )
1459 {
1460 // update the size limit if needed
1461 AdjustSpaceLimit();
1462
1463 return true;
1464 }
1465
1466 return false;
1467 }
1468
1469 // ----------------------------------------------------------------------------
1470 // Editing
1471 // ----------------------------------------------------------------------------
1472
1473 void wxTextCtrl::Replace(long from, long to, const wxString& value)
1474 {
1475 // Set selection and remove it
1476 DoSetSelection(from, to, false /* don't scroll caret into view */);
1477
1478 DoWriteText(value);
1479 }
1480
1481 void wxTextCtrl::Remove(long from, long to)
1482 {
1483 Replace(from, to, wxEmptyString);
1484 }
1485
1486 bool wxTextCtrl::IsModified() const
1487 {
1488 return ::SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0;
1489 }
1490
1491 void wxTextCtrl::MarkDirty()
1492 {
1493 ::SendMessage(GetHwnd(), EM_SETMODIFY, TRUE, 0L);
1494 }
1495
1496 void wxTextCtrl::DiscardEdits()
1497 {
1498 ::SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0L);
1499 }
1500
1501 int wxTextCtrl::GetNumberOfLines() const
1502 {
1503 return (int)::SendMessage(GetHwnd(), EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0);
1504 }
1505
1506 // ----------------------------------------------------------------------------
1507 // Positions <-> coords
1508 // ----------------------------------------------------------------------------
1509
1510 long wxTextCtrl::XYToPosition(long x, long y) const
1511 {
1512 // This gets the char index for the _beginning_ of this line
1513 long charIndex = ::SendMessage(GetHwnd(), EM_LINEINDEX, (WPARAM)y, (LPARAM)0);
1514
1515 return charIndex + x;
1516 }
1517
1518 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
1519 {
1520 HWND hWnd = GetHwnd();
1521
1522 // This gets the line number containing the character
1523 long lineNo;
1524 #if wxUSE_RICHEDIT
1525 if ( IsRich() )
1526 {
1527 lineNo = ::SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, (LPARAM)pos);
1528 }
1529 else
1530 #endif // wxUSE_RICHEDIT
1531 {
1532 lineNo = ::SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, 0);
1533 }
1534
1535 if ( lineNo == -1 )
1536 {
1537 // no such line
1538 return false;
1539 }
1540
1541 // This gets the char index for the _beginning_ of this line
1542 long charIndex = ::SendMessage(hWnd, EM_LINEINDEX, (WPARAM)lineNo, (LPARAM)0);
1543 if ( charIndex == -1 )
1544 {
1545 return false;
1546 }
1547
1548 // The X position must therefore be the different between pos and charIndex
1549 if ( x )
1550 *x = pos - charIndex;
1551 if ( y )
1552 *y = lineNo;
1553
1554 return true;
1555 }
1556
1557 wxTextCtrlHitTestResult
1558 wxTextCtrl::HitTest(const wxPoint& pt, long *posOut) const
1559 {
1560 // first get the position from Windows
1561 LPARAM lParam;
1562
1563 #if wxUSE_RICHEDIT
1564 POINTL ptl;
1565 if ( IsRich() )
1566 {
1567 // for rich edit controls the position is passed iva the struct fields
1568 ptl.x = pt.x;
1569 ptl.y = pt.y;
1570 lParam = (LPARAM)&ptl;
1571 }
1572 else
1573 #endif // wxUSE_RICHEDIT
1574 {
1575 // for the plain ones, we are limited to 16 bit positions which are
1576 // combined in a single 32 bit value
1577 lParam = MAKELPARAM(pt.x, pt.y);
1578 }
1579
1580 LRESULT pos = ::SendMessage(GetHwnd(), EM_CHARFROMPOS, 0, lParam);
1581
1582 if ( pos == -1 )
1583 {
1584 // this seems to indicate an error...
1585 return wxTE_HT_UNKNOWN;
1586 }
1587
1588 #if wxUSE_RICHEDIT
1589 if ( !IsRich() )
1590 #endif // wxUSE_RICHEDIT
1591 {
1592 // for plain EDIT controls the higher word contains something else
1593 pos = LOWORD(pos);
1594 }
1595
1596
1597 // next determine where it is relatively to our point: EM_CHARFROMPOS
1598 // always returns the closest character but we need to be more precise, so
1599 // double check that we really are where it pretends
1600 POINTL ptReal;
1601
1602 #if wxUSE_RICHEDIT
1603 // FIXME: we need to distinguish between richedit 2 and 3 here somehow but
1604 // we don't know how to do it
1605 if ( IsRich() )
1606 {
1607 ::SendMessage(GetHwnd(), EM_POSFROMCHAR, (WPARAM)&ptReal, pos);
1608 }
1609 else
1610 #endif // wxUSE_RICHEDIT
1611 {
1612 LRESULT lRc = ::SendMessage(GetHwnd(), EM_POSFROMCHAR, pos, 0);
1613
1614 if ( lRc == -1 )
1615 {
1616 // this is apparently returned when pos corresponds to the last
1617 // position
1618 ptReal.x =
1619 ptReal.y = 0;
1620 }
1621 else
1622 {
1623 ptReal.x = LOWORD(lRc);
1624 ptReal.y = HIWORD(lRc);
1625 }
1626 }
1627
1628 wxTextCtrlHitTestResult rc;
1629
1630 if ( pt.y > ptReal.y + GetCharHeight() )
1631 rc = wxTE_HT_BELOW;
1632 else if ( pt.x > ptReal.x + GetCharWidth() )
1633 rc = wxTE_HT_BEYOND;
1634 else
1635 rc = wxTE_HT_ON_TEXT;
1636
1637 if ( posOut )
1638 *posOut = pos;
1639
1640 return rc;
1641 }
1642
1643 // ----------------------------------------------------------------------------
1644 //
1645 // ----------------------------------------------------------------------------
1646
1647 void wxTextCtrl::ShowPosition(long pos)
1648 {
1649 HWND hWnd = GetHwnd();
1650
1651 // To scroll to a position, we pass the number of lines and characters
1652 // to scroll *by*. This means that we need to:
1653 // (1) Find the line position of the current line.
1654 // (2) Find the line position of pos.
1655 // (3) Scroll by (pos - current).
1656 // For now, ignore the horizontal scrolling.
1657
1658 // Is this where scrolling is relative to - the line containing the caret?
1659 // Or is the first visible line??? Try first visible line.
1660 // int currentLineLineNo1 = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)-1, (LPARAM)0L);
1661
1662 int currentLineLineNo = (int)::SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, (WPARAM)0, (LPARAM)0L);
1663
1664 int specifiedLineLineNo = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, (LPARAM)0L);
1665
1666 int linesToScroll = specifiedLineLineNo - currentLineLineNo;
1667
1668 if (linesToScroll != 0)
1669 (void)::SendMessage(hWnd, EM_LINESCROLL, (WPARAM)0, (LPARAM)linesToScroll);
1670 }
1671
1672 long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const
1673 {
1674 return ::SendMessage(GetHwnd(), EM_LINELENGTH, (WPARAM)pos, 0);
1675 }
1676
1677 int wxTextCtrl::GetLineLength(long lineNo) const
1678 {
1679 long pos = XYToPosition(0, lineNo);
1680
1681 return GetLengthOfLineContainingPos(pos);
1682 }
1683
1684 wxString wxTextCtrl::GetLineText(long lineNo) const
1685 {
1686 size_t len = (size_t)GetLineLength(lineNo) + 1;
1687
1688 // there must be at least enough place for the length WORD in the
1689 // buffer
1690 len += sizeof(WORD);
1691
1692 wxString str;
1693 {
1694 wxStringBufferLength tmp(str, len);
1695 wxChar *buf = tmp;
1696
1697 *(WORD *)buf = (WORD)len;
1698 len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf);
1699
1700 #if wxUSE_RICHEDIT
1701 if ( IsRich() )
1702 {
1703 // remove the '\r' returned by the rich edit control, the user code
1704 // should never see it
1705 if ( buf[len - 2] == _T('\r') && buf[len - 1] == _T('\n') )
1706 {
1707 buf[len - 2] = _T('\n');
1708 len--;
1709 }
1710 }
1711 #endif // wxUSE_RICHEDIT
1712
1713 // remove the '\n' at the end, if any (this is how this function is
1714 // supposed to work according to the docs)
1715 if ( buf[len - 1] == _T('\n') )
1716 {
1717 len--;
1718 }
1719
1720 buf[len] = 0;
1721 tmp.SetLength(len);
1722 }
1723
1724 return str;
1725 }
1726
1727 void wxTextCtrl::SetMaxLength(unsigned long len)
1728 {
1729 #if wxUSE_RICHEDIT
1730 if ( IsRich() )
1731 {
1732 ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, len ? len : 0x7fffffff);
1733 }
1734 else
1735 #endif // wxUSE_RICHEDIT
1736 {
1737 if ( len >= 0xffff )
1738 {
1739 // this will set it to a platform-dependent maximum (much more
1740 // than 64Kb under NT)
1741 len = 0;
1742 }
1743
1744 ::SendMessage(GetHwnd(), EM_LIMITTEXT, len, 0);
1745 }
1746 }
1747
1748 // ----------------------------------------------------------------------------
1749 // Undo/redo
1750 // ----------------------------------------------------------------------------
1751
1752 void wxTextCtrl::Undo()
1753 {
1754 if (CanUndo())
1755 {
1756 ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1757 }
1758 }
1759
1760 void wxTextCtrl::Redo()
1761 {
1762 if (CanRedo())
1763 {
1764 #if wxUSE_RICHEDIT
1765 if (GetRichVersion() > 1)
1766 ::SendMessage(GetHwnd(), EM_REDO, 0, 0);
1767 else
1768 #endif
1769 // Same as Undo, since Undo undoes the undo, i.e. a redo.
1770 ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1771 }
1772 }
1773
1774 bool wxTextCtrl::CanUndo() const
1775 {
1776 return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1777 }
1778
1779 bool wxTextCtrl::CanRedo() const
1780 {
1781 #if wxUSE_RICHEDIT
1782 if (GetRichVersion() > 1)
1783 return ::SendMessage(GetHwnd(), EM_CANREDO, 0, 0) != 0;
1784 else
1785 #endif
1786 return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1787 }
1788
1789 // ----------------------------------------------------------------------------
1790 // caret handling (Windows only)
1791 // ----------------------------------------------------------------------------
1792
1793 bool wxTextCtrl::ShowNativeCaret(bool show)
1794 {
1795 if ( show != m_isNativeCaretShown )
1796 {
1797 if ( !(show ? ::ShowCaret(GetHwnd()) : ::HideCaret(GetHwnd())) )
1798 {
1799 // not an error, may simply indicate that it's not shown/hidden
1800 // yet (i.e. it had been hidden/showh 2 times before)
1801 return false;
1802 }
1803
1804 m_isNativeCaretShown = show;
1805 }
1806
1807 return true;
1808 }
1809
1810 // ----------------------------------------------------------------------------
1811 // implemenation details
1812 // ----------------------------------------------------------------------------
1813
1814 void wxTextCtrl::Command(wxCommandEvent & event)
1815 {
1816 SetValue(event.GetString());
1817 ProcessCommand (event);
1818 }
1819
1820 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
1821 {
1822 // By default, load the first file into the text window.
1823 if (event.GetNumberOfFiles() > 0)
1824 {
1825 LoadFile(event.GetFiles()[0]);
1826 }
1827 }
1828
1829 // ----------------------------------------------------------------------------
1830 // kbd input processing
1831 // ----------------------------------------------------------------------------
1832
1833 bool wxTextCtrl::MSWShouldPreProcessMessage(WXMSG* msg)
1834 {
1835 // check for our special keys here: if we don't do it and the parent frame
1836 // uses them as accelerators, they wouldn't work at all, so we disable
1837 // usual preprocessing for them
1838 if ( msg->message == WM_KEYDOWN )
1839 {
1840 const WPARAM vkey = msg->wParam;
1841 if ( HIWORD(msg->lParam) & KF_ALTDOWN )
1842 {
1843 // Alt-Backspace is accelerator for "Undo"
1844 if ( vkey == VK_BACK )
1845 return false;
1846 }
1847 else // no Alt
1848 {
1849 // we want to process some Ctrl-foo and Shift-bar but no key
1850 // combinations without either Ctrl or Shift nor with both of them
1851 // pressed
1852 const int ctrl = wxIsCtrlDown(),
1853 shift = wxIsShiftDown();
1854 switch ( ctrl + shift )
1855 {
1856 default:
1857 wxFAIL_MSG( _T("how many modifiers have we got?") );
1858 // fall through
1859
1860 case 0:
1861 if ( IsMultiLine() && vkey == VK_RETURN )
1862 return false;
1863 // fall through
1864 case 2:
1865 break;
1866
1867 case 1:
1868 // either Ctrl or Shift pressed
1869 if ( ctrl )
1870 {
1871 switch ( vkey )
1872 {
1873 case 'C':
1874 case 'V':
1875 case 'X':
1876 case VK_INSERT:
1877 case VK_DELETE:
1878 case VK_HOME:
1879 case VK_END:
1880 return false;
1881 }
1882 }
1883 else // Shift is pressed
1884 {
1885 if ( vkey == VK_INSERT || vkey == VK_DELETE )
1886 return false;
1887 }
1888 }
1889 }
1890 }
1891
1892 return wxControl::MSWShouldPreProcessMessage(msg);
1893 }
1894
1895 void wxTextCtrl::OnChar(wxKeyEvent& event)
1896 {
1897 switch ( event.GetKeyCode() )
1898 {
1899 case WXK_RETURN:
1900 {
1901 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1902 InitCommandEvent(event);
1903 event.SetString(GetValue());
1904 if ( GetEventHandler()->ProcessEvent(event) )
1905 if ( !HasFlag(wxTE_MULTILINE) )
1906 return;
1907 //else: multiline controls need Enter for themselves
1908 }
1909 break;
1910
1911 case WXK_TAB:
1912 // ok, so this is getting absolutely ridiculous but I don't see
1913 // any other way to fix this bug: when a multiline text control is
1914 // inside a wxFrame, we need to generate the navigation event as
1915 // otherwise nothing happens at all, but when the same control is
1916 // created inside a dialog, IsDialogMessage() *does* switch focus
1917 // all by itself and so if we do it here as well, it is advanced
1918 // twice and goes to the next control... to prevent this from
1919 // happening we're doing this ugly check, the logic being that if
1920 // we don't have focus then it had been already changed to the next
1921 // control
1922 //
1923 // the right thing to do would, of course, be to understand what
1924 // the hell is IsDialogMessage() doing but this is beyond my feeble
1925 // forces at the moment unfortunately
1926 if ( !(m_windowStyle & wxTE_PROCESS_TAB))
1927 {
1928 if ( FindFocus() == this )
1929 {
1930 int flags = 0;
1931 if (!event.ShiftDown())
1932 flags |= wxNavigationKeyEvent::IsForward ;
1933 if (event.ControlDown())
1934 flags |= wxNavigationKeyEvent::WinChange ;
1935 if (Navigate(flags))
1936 return;
1937 }
1938 }
1939 else
1940 {
1941 // Insert tab since calling the default Windows handler
1942 // doesn't seem to do it
1943 WriteText(wxT("\t"));
1944 return;
1945 }
1946 break;
1947 }
1948
1949 // no, we didn't process it
1950 event.Skip();
1951 }
1952
1953 WXLRESULT wxTextCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
1954 {
1955 WXLRESULT lRc = wxTextCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
1956
1957 switch ( nMsg )
1958 {
1959 case WM_GETDLGCODE:
1960 {
1961 // we always want the chars and the arrows: the arrows for
1962 // navigation and the chars because we want Ctrl-C to work even
1963 // in a read only control
1964 long lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
1965
1966 if ( IsEditable() )
1967 {
1968 // we may have several different cases:
1969 // 1. normal: both TAB and ENTER are used for navigation
1970 // 2. ctrl wants TAB for itself: ENTER is used to pass to
1971 // the next control in the dialog
1972 // 3. ctrl wants ENTER for itself: TAB is used for dialog
1973 // navigation
1974 // 4. ctrl wants both TAB and ENTER: Ctrl-ENTER is used to
1975 // go to the next control (we need some way to do it)
1976
1977 // multiline controls should always get ENTER for themselves
1978 if ( HasFlag(wxTE_PROCESS_ENTER) || HasFlag(wxTE_MULTILINE) )
1979 lDlgCode |= DLGC_WANTMESSAGE;
1980
1981 if ( HasFlag(wxTE_PROCESS_TAB) )
1982 lDlgCode |= DLGC_WANTTAB;
1983
1984 lRc |= lDlgCode;
1985 }
1986 else // !editable
1987 {
1988 // NB: use "=", not "|=" as the base class version returns
1989 // the same flags is this state as usual (i.e.
1990 // including DLGC_WANTMESSAGE). This is strange (how
1991 // does it work in the native Win32 apps?) but for now
1992 // live with it.
1993 lRc = lDlgCode;
1994 }
1995 }
1996 break;
1997
1998 case WM_CUT:
1999 case WM_COPY:
2000 case WM_PASTE:
2001 if ( HandleClipboardEvent(nMsg) )
2002 lRc = 0;
2003 break;
2004 }
2005
2006 return lRc;
2007 }
2008
2009 // ----------------------------------------------------------------------------
2010 // text control event processing
2011 // ----------------------------------------------------------------------------
2012
2013 bool wxTextCtrl::SendUpdateEvent()
2014 {
2015 switch ( m_updatesCount )
2016 {
2017 case 0:
2018 // remember that we've got an update
2019 m_updatesCount++;
2020 break;
2021
2022 case 1:
2023 // we had already sent one event since the last control modification
2024 return false;
2025
2026 default:
2027 wxFAIL_MSG( _T("unexpected wxTextCtrl::m_updatesCount value") );
2028 // fall through
2029
2030 case -1:
2031 // we hadn't updated the control ourselves, this event comes from
2032 // the user, don't need to ignore it nor update the count
2033 break;
2034
2035 case -2:
2036 // the control was updated programmatically and we do NOT want to
2037 // send events
2038 return false;
2039 }
2040
2041 wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, GetId());
2042 InitCommandEvent(event);
2043
2044 return ProcessCommand(event);
2045 }
2046
2047 bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
2048 {
2049 switch ( param )
2050 {
2051 case EN_SETFOCUS:
2052 case EN_KILLFOCUS:
2053 {
2054 wxFocusEvent event(param == EN_KILLFOCUS ? wxEVT_KILL_FOCUS
2055 : wxEVT_SET_FOCUS,
2056 m_windowId);
2057 event.SetEventObject(this);
2058 GetEventHandler()->ProcessEvent(event);
2059 }
2060 break;
2061
2062 case EN_CHANGE:
2063 SendUpdateEvent();
2064 break;
2065
2066 case EN_MAXTEXT:
2067 // the text size limit has been hit -- try to increase it
2068 if ( !AdjustSpaceLimit() )
2069 {
2070 wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, m_windowId);
2071 InitCommandEvent(event);
2072 event.SetString(GetValue());
2073 ProcessCommand(event);
2074 }
2075 break;
2076
2077 // the other edit notification messages are not processed
2078 default:
2079 return false;
2080 }
2081
2082 // processed
2083 return true;
2084 }
2085
2086 WXHBRUSH wxTextCtrl::MSWControlColor(WXHDC hDC, WXHWND hWnd)
2087 {
2088 if ( !IsEnabled() && !HasFlag(wxTE_MULTILINE) )
2089 return MSWControlColorDisabled(hDC);
2090
2091 return wxTextCtrlBase::MSWControlColor(hDC, hWnd);
2092 }
2093
2094 bool wxTextCtrl::HasSpaceLimit(unsigned int *len) const
2095 {
2096 // HACK: we try to automatically extend the limit for the amount of text
2097 // to allow (interactively) entering more than 64Kb of text under
2098 // Win9x but we shouldn't reset the text limit which was previously
2099 // set explicitly with SetMaxLength()
2100 //
2101 // Unfortunately there is no EM_GETLIMITTEXTSETBYUSER and so we don't
2102 // know the limit we set (if any). We could solve this by storing the
2103 // limit we set in wxTextCtrl but to save space we prefer to simply
2104 // test here the actual limit value: we consider that SetMaxLength()
2105 // can only be called for small values while EN_MAXTEXT is only sent
2106 // for large values (in practice the default limit seems to be 30000
2107 // but make it smaller just to be on the safe side)
2108 *len = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
2109 return *len < 10001;
2110
2111 }
2112
2113 bool wxTextCtrl::AdjustSpaceLimit()
2114 {
2115 unsigned int limit;
2116 if ( HasSpaceLimit(&limit) )
2117 return false;
2118
2119 unsigned int len = ::GetWindowTextLength(GetHwnd());
2120 if ( len >= limit )
2121 {
2122 // increment in 32Kb chunks
2123 SetMaxLength(len + 0x8000);
2124 }
2125
2126 // we changed the limit
2127 return true;
2128 }
2129
2130 bool wxTextCtrl::AcceptsFocus() const
2131 {
2132 // we don't want focus if we can't be edited unless we're a multiline
2133 // control because then it might be still nice to get focus from keyboard
2134 // to be able to scroll it without mouse
2135 return (IsEditable() || IsMultiLine()) && wxControl::AcceptsFocus();
2136 }
2137
2138 wxSize wxTextCtrl::DoGetBestSize() const
2139 {
2140 int cx, cy;
2141 wxGetCharSize(GetHWND(), &cx, &cy, GetFont());
2142
2143 int wText = DEFAULT_ITEM_WIDTH;
2144
2145 int hText = cy;
2146 if ( m_windowStyle & wxTE_MULTILINE )
2147 {
2148 hText *= wxMax(wxMin(GetNumberOfLines(), 10), 2);
2149 }
2150 //else: for single line control everything is ok
2151
2152 // we have to add the adjustments for the control height only once, not
2153 // once per line, so do it after multiplication above
2154 hText += EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy) - cy;
2155
2156 return wxSize(wText, hText);
2157 }
2158
2159 // ----------------------------------------------------------------------------
2160 // standard handlers for standard edit menu events
2161 // ----------------------------------------------------------------------------
2162
2163 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
2164 {
2165 Cut();
2166 }
2167
2168 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
2169 {
2170 Copy();
2171 }
2172
2173 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
2174 {
2175 Paste();
2176 }
2177
2178 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
2179 {
2180 Undo();
2181 }
2182
2183 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
2184 {
2185 Redo();
2186 }
2187
2188 void wxTextCtrl::OnDelete(wxCommandEvent& WXUNUSED(event))
2189 {
2190 long from, to;
2191 GetSelection(& from, & to);
2192 if (from != -1 && to != -1)
2193 Remove(from, to);
2194 }
2195
2196 void wxTextCtrl::OnSelectAll(wxCommandEvent& WXUNUSED(event))
2197 {
2198 SetSelection(-1, -1);
2199 }
2200
2201 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
2202 {
2203 event.Enable( CanCut() );
2204 }
2205
2206 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
2207 {
2208 event.Enable( CanCopy() );
2209 }
2210
2211 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
2212 {
2213 event.Enable( CanPaste() );
2214 }
2215
2216 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
2217 {
2218 event.Enable( CanUndo() );
2219 }
2220
2221 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
2222 {
2223 event.Enable( CanRedo() );
2224 }
2225
2226 void wxTextCtrl::OnUpdateDelete(wxUpdateUIEvent& event)
2227 {
2228 long from, to;
2229 GetSelection(& from, & to);
2230 event.Enable(from != -1 && to != -1 && from != to && IsEditable()) ;
2231 }
2232
2233 void wxTextCtrl::OnUpdateSelectAll(wxUpdateUIEvent& event)
2234 {
2235 event.Enable(GetLastPosition() > 0);
2236 }
2237
2238 void wxTextCtrl::OnContextMenu(wxContextMenuEvent& event)
2239 {
2240 #if wxUSE_RICHEDIT
2241 if (IsRich())
2242 {
2243 if (!m_privateContextMenu)
2244 {
2245 m_privateContextMenu = new wxMenu;
2246 m_privateContextMenu->Append(wxID_UNDO, _("&Undo"));
2247 m_privateContextMenu->Append(wxID_REDO, _("&Redo"));
2248 m_privateContextMenu->AppendSeparator();
2249 m_privateContextMenu->Append(wxID_CUT, _("Cu&t"));
2250 m_privateContextMenu->Append(wxID_COPY, _("&Copy"));
2251 m_privateContextMenu->Append(wxID_PASTE, _("&Paste"));
2252 m_privateContextMenu->Append(wxID_CLEAR, _("&Delete"));
2253 m_privateContextMenu->AppendSeparator();
2254 m_privateContextMenu->Append(wxID_SELECTALL, _("Select &All"));
2255 }
2256 PopupMenu(m_privateContextMenu);
2257 return;
2258 }
2259 else
2260 #endif
2261 event.Skip();
2262 }
2263
2264 void wxTextCtrl::OnSetFocus(wxFocusEvent& WXUNUSED(event))
2265 {
2266 // be sure the caret remains invisible if the user had hidden it
2267 if ( !m_isNativeCaretShown )
2268 {
2269 ::HideCaret(GetHwnd());
2270 }
2271 }
2272
2273 // ----------------------------------------------------------------------------
2274 // Default colors for MSW text control
2275 //
2276 // Set default background color to the native white instead of
2277 // the default wxSYS_COLOUR_BTNFACE (is triggered with wxNullColour).
2278 // ----------------------------------------------------------------------------
2279
2280 wxVisualAttributes wxTextCtrl::GetDefaultAttributes() const
2281 {
2282 wxVisualAttributes attrs;
2283 attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
2284 attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
2285 attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW); //white
2286
2287 return attrs;
2288 }
2289
2290 // the rest of the file only deals with the rich edit controls
2291 #if wxUSE_RICHEDIT
2292
2293 // ----------------------------------------------------------------------------
2294 // EN_LINK processing
2295 // ----------------------------------------------------------------------------
2296
2297 bool wxTextCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
2298 {
2299 NMHDR *hdr = (NMHDR* )lParam;
2300 switch ( hdr->code )
2301 {
2302 case EN_MSGFILTER:
2303 {
2304 const MSGFILTER *msgf = (MSGFILTER *)lParam;
2305 UINT msg = msgf->msg;
2306
2307 // this is a bit crazy but richedit 1.0 sends us all mouse
2308 // events _except_ WM_LBUTTONUP (don't ask me why) so we have
2309 // generate the wxWin events for this message manually
2310 //
2311 // NB: in fact, this is still not totally correct as it does
2312 // send us WM_LBUTTONUP if the selection was cleared by the
2313 // last click -- so currently we get 2 events in this case,
2314 // but as I don't see any obvious way to check for this I
2315 // leave this code in place because it's still better than
2316 // not getting left up events at all
2317 if ( msg == WM_LBUTTONUP )
2318 {
2319 WXUINT flags = msgf->wParam;
2320 int x = GET_X_LPARAM(msgf->lParam),
2321 y = GET_Y_LPARAM(msgf->lParam);
2322
2323 HandleMouseEvent(msg, x, y, flags);
2324 }
2325 }
2326
2327 // return true to process the event (and false to ignore it)
2328 return true;
2329
2330 case EN_LINK:
2331 {
2332 const ENLINK *enlink = (ENLINK *)hdr;
2333
2334 switch ( enlink->msg )
2335 {
2336 case WM_SETCURSOR:
2337 // ok, so it is hardcoded - do we really nee to
2338 // customize it?
2339 {
2340 wxCursor cur(wxCURSOR_HAND);
2341 ::SetCursor(GetHcursorOf(cur));
2342 *result = TRUE;
2343 break;
2344 }
2345
2346 case WM_MOUSEMOVE:
2347 case WM_LBUTTONDOWN:
2348 case WM_LBUTTONUP:
2349 case WM_LBUTTONDBLCLK:
2350 case WM_RBUTTONDOWN:
2351 case WM_RBUTTONUP:
2352 case WM_RBUTTONDBLCLK:
2353 // send a mouse event
2354 {
2355 static const wxEventType eventsMouse[] =
2356 {
2357 wxEVT_MOTION,
2358 wxEVT_LEFT_DOWN,
2359 wxEVT_LEFT_UP,
2360 wxEVT_LEFT_DCLICK,
2361 wxEVT_RIGHT_DOWN,
2362 wxEVT_RIGHT_UP,
2363 wxEVT_RIGHT_DCLICK,
2364 };
2365
2366 // the event ids are consecutive
2367 wxMouseEvent
2368 evtMouse(eventsMouse[enlink->msg - WM_MOUSEMOVE]);
2369
2370 InitMouseEvent(evtMouse,
2371 GET_X_LPARAM(enlink->lParam),
2372 GET_Y_LPARAM(enlink->lParam),
2373 enlink->wParam);
2374
2375 wxTextUrlEvent event(m_windowId, evtMouse,
2376 enlink->chrg.cpMin,
2377 enlink->chrg.cpMax);
2378
2379 InitCommandEvent(event);
2380
2381 *result = ProcessCommand(event);
2382 }
2383 break;
2384 }
2385 }
2386 return true;
2387 }
2388
2389 // not processed, leave it to the base class
2390 return wxTextCtrlBase::MSWOnNotify(idCtrl, lParam, result);
2391 }
2392
2393 // ----------------------------------------------------------------------------
2394 // colour setting for the rich edit controls
2395 // ----------------------------------------------------------------------------
2396
2397 bool wxTextCtrl::SetBackgroundColour(const wxColour& colour)
2398 {
2399 if ( !wxTextCtrlBase::SetBackgroundColour(colour) )
2400 {
2401 // colour didn't really change
2402 return false;
2403 }
2404
2405 if ( IsRich() )
2406 {
2407 // rich edit doesn't use WM_CTLCOLOR, hence we need to send
2408 // EM_SETBKGNDCOLOR additionally
2409 ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour));
2410 }
2411
2412 return true;
2413 }
2414
2415 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
2416 {
2417 if ( !wxTextCtrlBase::SetForegroundColour(colour) )
2418 {
2419 // colour didn't really change
2420 return false;
2421 }
2422
2423 if ( IsRich() )
2424 {
2425 // change the colour of everything
2426 CHARFORMAT cf;
2427 wxZeroMemory(cf);
2428 cf.cbSize = sizeof(cf);
2429 cf.dwMask = CFM_COLOR;
2430 cf.crTextColor = wxColourToRGB(colour);
2431 ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf);
2432 }
2433
2434 return true;
2435 }
2436
2437 // ----------------------------------------------------------------------------
2438 // styling support for rich edit controls
2439 // ----------------------------------------------------------------------------
2440
2441 #if wxUSE_RICHEDIT
2442
2443 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
2444 {
2445 if ( !IsRich() )
2446 {
2447 // can't do it with normal text control
2448 return false;
2449 }
2450
2451 // the richedit 1.0 doesn't handle setting background colour, so don't
2452 // even try to do anything if it's the only thing we want to change
2453 if ( m_verRichEdit == 1 && !style.HasFont() && !style.HasTextColour() &&
2454 !style.HasLeftIndent() && !style.HasRightIndent() && !style.HasAlignment() &&
2455 !style.HasTabs() )
2456 {
2457 // nothing to do: return true if there was really nothing to do and
2458 // false if we failed to set bg colour
2459 return !style.HasBackgroundColour();
2460 }
2461
2462 // order the range if needed
2463 if ( start > end )
2464 {
2465 long tmp = start;
2466 start = end;
2467 end = tmp;
2468 }
2469
2470 // we can only change the format of the selection, so select the range we
2471 // want and restore the old selection later
2472 long startOld, endOld;
2473 GetSelection(&startOld, &endOld);
2474
2475 // but do we really have to change the selection?
2476 bool changeSel = start != startOld || end != endOld;
2477
2478 if ( changeSel )
2479 {
2480 DoSetSelection(start, end, false /* don't scroll caret into view */);
2481 }
2482
2483 // initialize CHARFORMAT struct
2484 #if wxUSE_RICHEDIT2
2485 CHARFORMAT2 cf;
2486 #else
2487 CHARFORMAT cf;
2488 #endif
2489
2490 wxZeroMemory(cf);
2491
2492 // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2493 // CHARFORMAT in that case
2494 #if wxUSE_RICHEDIT2
2495 if ( m_verRichEdit == 1 )
2496 {
2497 // this is the only thing the control is going to grok
2498 cf.cbSize = sizeof(CHARFORMAT);
2499 }
2500 else
2501 #endif
2502 {
2503 // CHARFORMAT or CHARFORMAT2
2504 cf.cbSize = sizeof(cf);
2505 }
2506
2507 if ( style.HasFont() )
2508 {
2509 // VZ: CFM_CHARSET doesn't seem to do anything at all in RichEdit 2.0
2510 // but using it doesn't seem to hurt neither so leaving it for now
2511
2512 cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET |
2513 CFM_ITALIC | CFM_BOLD | CFM_UNDERLINE;
2514
2515 // fill in data from LOGFONT but recalculate lfHeight because we need
2516 // the real height in twips and not the negative number which
2517 // wxFillLogFont() returns (this is correct in general and works with
2518 // the Windows font mapper, but not here)
2519 LOGFONT lf;
2520 wxFillLogFont(&lf, &style.GetFont());
2521 cf.yHeight = 20*style.GetFont().GetPointSize(); // 1 pt = 20 twips
2522 cf.bCharSet = lf.lfCharSet;
2523 cf.bPitchAndFamily = lf.lfPitchAndFamily;
2524 wxStrncpy( cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName) );
2525
2526 // also deal with underline/italic/bold attributes: note that we must
2527 // always set CFM_ITALIC &c bits in dwMask, even if we don't set the
2528 // style to allow clearing it
2529 if ( lf.lfItalic )
2530 {
2531 cf.dwEffects |= CFE_ITALIC;
2532 }
2533
2534 if ( lf.lfWeight == FW_BOLD )
2535 {
2536 cf.dwEffects |= CFE_BOLD;
2537 }
2538
2539 if ( lf.lfUnderline )
2540 {
2541 cf.dwEffects |= CFE_UNDERLINE;
2542 }
2543
2544 // strikeout fonts are not supported by wxWidgets
2545 }
2546
2547 if ( style.HasTextColour() )
2548 {
2549 cf.dwMask |= CFM_COLOR;
2550 cf.crTextColor = wxColourToRGB(style.GetTextColour());
2551 }
2552
2553 #if wxUSE_RICHEDIT2
2554 if ( m_verRichEdit != 1 && style.HasBackgroundColour() )
2555 {
2556 cf.dwMask |= CFM_BACKCOLOR;
2557 cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
2558 }
2559 #endif // wxUSE_RICHEDIT2
2560
2561 // do format the selection
2562 bool ok = ::SendMessage(GetHwnd(), EM_SETCHARFORMAT,
2563 SCF_SELECTION, (LPARAM)&cf) != 0;
2564 if ( !ok )
2565 {
2566 wxLogDebug(_T("SendMessage(EM_SETCHARFORMAT, SCF_SELECTION) failed"));
2567 }
2568
2569 // now do the paragraph formatting
2570 PARAFORMAT2 pf;
2571 wxZeroMemory(pf);
2572 // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2573 // PARAFORMAT in that case
2574 #if wxUSE_RICHEDIT2
2575 if ( m_verRichEdit == 1 )
2576 {
2577 // this is the only thing the control is going to grok
2578 pf.cbSize = sizeof(PARAFORMAT);
2579 }
2580 else
2581 #endif
2582 {
2583 // PARAFORMAT or PARAFORMAT2
2584 pf.cbSize = sizeof(pf);
2585 }
2586
2587 if (style.HasAlignment())
2588 {
2589 pf.dwMask |= PFM_ALIGNMENT;
2590 if (style.GetAlignment() == wxTEXT_ALIGNMENT_RIGHT)
2591 pf.wAlignment = PFA_RIGHT;
2592 else if (style.GetAlignment() == wxTEXT_ALIGNMENT_CENTRE)
2593 pf.wAlignment = PFA_CENTER;
2594 else if (style.GetAlignment() == wxTEXT_ALIGNMENT_JUSTIFIED)
2595 pf.wAlignment = PFA_JUSTIFY;
2596 else
2597 pf.wAlignment = PFA_LEFT;
2598 }
2599
2600 if (style.HasLeftIndent())
2601 {
2602 pf.dwMask |= PFM_STARTINDENT | PFM_OFFSET;
2603
2604 // Convert from 1/10 mm to TWIPS
2605 pf.dxStartIndent = (int) (((double) style.GetLeftIndent()) * mm2twips / 10.0) ;
2606 pf.dxOffset = (int) (((double) style.GetLeftSubIndent()) * mm2twips / 10.0) ;
2607 }
2608
2609 if (style.HasRightIndent())
2610 {
2611 pf.dwMask |= PFM_RIGHTINDENT;
2612
2613 // Convert from 1/10 mm to TWIPS
2614 pf.dxRightIndent = (int) (((double) style.GetRightIndent()) * mm2twips / 10.0) ;
2615 }
2616
2617 if (style.HasTabs())
2618 {
2619 pf.dwMask |= PFM_TABSTOPS;
2620
2621 const wxArrayInt& tabs = style.GetTabs();
2622
2623 pf.cTabCount = (SHORT)wxMin(tabs.GetCount(), MAX_TAB_STOPS);
2624 size_t i;
2625 for (i = 0; i < (size_t) pf.cTabCount; i++)
2626 {
2627 // Convert from 1/10 mm to TWIPS
2628 pf.rgxTabs[i] = (int) (((double) tabs[i]) * mm2twips / 10.0) ;
2629 }
2630 }
2631
2632 #if wxUSE_RICHEDIT2
2633 if ( m_verRichEdit > 1 )
2634 {
2635 if ( wxTheApp->GetLayoutDirection() == wxLayout_RightToLeft )
2636 {
2637 // Use RTL paragraphs in RTL mode to get proper layout
2638 pf.dwMask |= PFM_RTLPARA;
2639 pf.wEffects |= PFE_RTLPARA;
2640 }
2641 }
2642 #endif // wxUSE_RICHEDIT2
2643
2644 if ( pf.dwMask )
2645 {
2646 // do format the selection
2647 bool ok = ::SendMessage(GetHwnd(), EM_SETPARAFORMAT,
2648 0, (LPARAM) &pf) != 0;
2649 if ( !ok )
2650 {
2651 wxLogDebug(_T("SendMessage(EM_SETPARAFORMAT, 0) failed"));
2652 }
2653 }
2654
2655 if ( changeSel )
2656 {
2657 // restore the original selection
2658 DoSetSelection(startOld, endOld, false);
2659 }
2660
2661 return ok;
2662 }
2663
2664 bool wxTextCtrl::SetDefaultStyle(const wxTextAttr& style)
2665 {
2666 if ( !wxTextCtrlBase::SetDefaultStyle(style) )
2667 return false;
2668
2669 if ( IsEditable() )
2670 {
2671 // we have to do this or the style wouldn't apply for the text typed by
2672 // the user
2673 wxTextPos posLast = GetLastPosition();
2674 SetStyle(posLast, posLast, m_defaultStyle);
2675 }
2676
2677 return true;
2678 }
2679
2680 bool wxTextCtrl::GetStyle(long position, wxTextAttr& style)
2681 {
2682 if ( !IsRich() )
2683 {
2684 // can't do it with normal text control
2685 return false;
2686 }
2687
2688 // initialize CHARFORMAT struct
2689 #if wxUSE_RICHEDIT2
2690 CHARFORMAT2 cf;
2691 #else
2692 CHARFORMAT cf;
2693 #endif
2694
2695 wxZeroMemory(cf);
2696
2697 // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2698 // CHARFORMAT in that case
2699 #if wxUSE_RICHEDIT2
2700 if ( m_verRichEdit == 1 )
2701 {
2702 // this is the only thing the control is going to grok
2703 cf.cbSize = sizeof(CHARFORMAT);
2704 }
2705 else
2706 #endif
2707 {
2708 // CHARFORMAT or CHARFORMAT2
2709 cf.cbSize = sizeof(cf);
2710 }
2711 // we can only change the format of the selection, so select the range we
2712 // want and restore the old selection later
2713 long startOld, endOld;
2714 GetSelection(&startOld, &endOld);
2715
2716 // but do we really have to change the selection?
2717 bool changeSel = position != startOld || position != endOld;
2718
2719 if ( changeSel )
2720 {
2721 DoSetSelection(position, position+1, false /* don't scroll caret into view */);
2722 }
2723
2724 // get the selection formatting
2725 (void) ::SendMessage(GetHwnd(), EM_GETCHARFORMAT,
2726 SCF_SELECTION, (LPARAM)&cf) ;
2727
2728
2729 LOGFONT lf;
2730 lf.lfHeight = cf.yHeight;
2731 lf.lfWidth = 0;
2732 lf.lfCharSet = ANSI_CHARSET; // FIXME: how to get correct charset?
2733 lf.lfClipPrecision = 0;
2734 lf.lfEscapement = 0;
2735 wxStrcpy(lf.lfFaceName, cf.szFaceName);
2736
2737 //NOTE: we _MUST_ set each of these values to _something_ since we
2738 //do not call wxZeroMemory on the LOGFONT lf
2739 if (cf.dwEffects & CFE_ITALIC)
2740 lf.lfItalic = TRUE;
2741 else
2742 lf.lfItalic = FALSE;
2743
2744 lf.lfOrientation = 0;
2745 lf.lfPitchAndFamily = cf.bPitchAndFamily;
2746 lf.lfQuality = 0;
2747
2748 if (cf.dwEffects & CFE_STRIKEOUT)
2749 lf.lfStrikeOut = TRUE;
2750 else
2751 lf.lfStrikeOut = FALSE;
2752
2753 if (cf.dwEffects & CFE_UNDERLINE)
2754 lf.lfUnderline = TRUE;
2755 else
2756 lf.lfUnderline = FALSE;
2757
2758 if (cf.dwEffects & CFE_BOLD)
2759 lf.lfWeight = FW_BOLD;
2760 else
2761 lf.lfWeight = FW_NORMAL;
2762
2763 wxFont font = wxCreateFontFromLogFont(& lf);
2764 if (font.Ok())
2765 {
2766 style.SetFont(font);
2767 }
2768 style.SetTextColour(wxColour(cf.crTextColor));
2769
2770 #if wxUSE_RICHEDIT2
2771 if ( m_verRichEdit != 1 )
2772 {
2773 // cf.dwMask |= CFM_BACKCOLOR;
2774 style.SetBackgroundColour(wxColour(cf.crBackColor));
2775 }
2776 #endif // wxUSE_RICHEDIT2
2777
2778 // now get the paragraph formatting
2779 PARAFORMAT2 pf;
2780 wxZeroMemory(pf);
2781 // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2782 // PARAFORMAT in that case
2783 #if wxUSE_RICHEDIT2
2784 if ( m_verRichEdit == 1 )
2785 {
2786 // this is the only thing the control is going to grok
2787 pf.cbSize = sizeof(PARAFORMAT);
2788 }
2789 else
2790 #endif
2791 {
2792 // PARAFORMAT or PARAFORMAT2
2793 pf.cbSize = sizeof(pf);
2794 }
2795
2796 // do format the selection
2797 (void) ::SendMessage(GetHwnd(), EM_GETPARAFORMAT, 0, (LPARAM) &pf) ;
2798
2799 style.SetLeftIndent( (int) ((double) pf.dxStartIndent * twips2mm * 10.0), (int) ((double) pf.dxOffset * twips2mm * 10.0) );
2800 style.SetRightIndent( (int) ((double) pf.dxRightIndent * twips2mm * 10.0) );
2801
2802 if (pf.wAlignment == PFA_CENTER)
2803 style.SetAlignment(wxTEXT_ALIGNMENT_CENTRE);
2804 else if (pf.wAlignment == PFA_RIGHT)
2805 style.SetAlignment(wxTEXT_ALIGNMENT_RIGHT);
2806 else if (pf.wAlignment == PFA_JUSTIFY)
2807 style.SetAlignment(wxTEXT_ALIGNMENT_JUSTIFIED);
2808 else
2809 style.SetAlignment(wxTEXT_ALIGNMENT_LEFT);
2810
2811 wxArrayInt tabStops;
2812 size_t i;
2813 for (i = 0; i < (size_t) pf.cTabCount; i++)
2814 {
2815 tabStops.Add( (int) ((double) (pf.rgxTabs[i] & 0xFFFF) * twips2mm * 10.0) );
2816 }
2817
2818 if ( changeSel )
2819 {
2820 // restore the original selection
2821 DoSetSelection(startOld, endOld, false);
2822 }
2823
2824 return true;
2825 }
2826
2827 #endif
2828
2829 // ----------------------------------------------------------------------------
2830 // wxRichEditModule
2831 // ----------------------------------------------------------------------------
2832
2833 static const HINSTANCE INVALID_HINSTANCE = (HINSTANCE)-1;
2834
2835 bool wxRichEditModule::OnInit()
2836 {
2837 // don't do anything - we will load it when needed
2838 return true;
2839 }
2840
2841 void wxRichEditModule::OnExit()
2842 {
2843 for ( size_t i = 0; i < WXSIZEOF(ms_hRichEdit); i++ )
2844 {
2845 if ( ms_hRichEdit[i] && ms_hRichEdit[i] != INVALID_HINSTANCE )
2846 {
2847 ::FreeLibrary(ms_hRichEdit[i]);
2848 ms_hRichEdit[i] = NULL;
2849 }
2850 }
2851 #if wxUSE_INKEDIT
2852 if (ms_inkEditLib.IsLoaded())
2853 ms_inkEditLib.Unload();
2854 #endif
2855 }
2856
2857 /* static */
2858 bool wxRichEditModule::Load(Version version)
2859 {
2860 if ( ms_hRichEdit[version] == INVALID_HINSTANCE )
2861 {
2862 // we had already tried to load it and failed
2863 return false;
2864 }
2865
2866 if ( ms_hRichEdit[version] )
2867 {
2868 // we've already got this one
2869 return true;
2870 }
2871
2872 static const wxChar *dllnames[] =
2873 {
2874 _T("riched32"),
2875 _T("riched20"),
2876 _T("msftedit"),
2877 };
2878
2879 wxCOMPILE_TIME_ASSERT( WXSIZEOF(dllnames) == Version_Max,
2880 RichEditDllNamesVersionsMismatch );
2881
2882 ms_hRichEdit[version] = ::LoadLibrary(dllnames[version]);
2883
2884 if ( !ms_hRichEdit[version] )
2885 {
2886 ms_hRichEdit[version] = INVALID_HINSTANCE;
2887
2888 return false;
2889 }
2890
2891 return true;
2892 }
2893
2894 #if wxUSE_INKEDIT
2895 // load the InkEdit library
2896 bool wxRichEditModule::LoadInkEdit()
2897 {
2898 static wxDynamicLibrary ms_inkEditLib;
2899 static bool ms_inkEditLibLoadAttemped;
2900 if (ms_inkEditLibLoadAttemped)
2901 ms_inkEditLib.IsLoaded();
2902
2903 ms_inkEditLibLoadAttemped = true;
2904
2905 wxLogNull logNull;
2906 return ms_inkEditLib.Load(wxT("inked"));
2907 }
2908 #endif
2909
2910
2911 #endif // wxUSE_RICHEDIT
2912
2913 #endif // wxUSE_TEXTCTRL && !(__SMARTPHONE__ && __WXWINCE__)
wxWidgets (Impactor)