src/os2/textctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        textctrl.cpp
   3 // Purpose:     wxTextCtrl
   4 // Author:      David Webster
   5 // Modified by:
   6 // Created:     10/17/99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) David Webster
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ----------------------------------------------------------------------------
  13 // headers
  14 // ----------------------------------------------------------------------------
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifndef WX_PRECOMP
  20     #include "wx/textctrl.h"
  21     #include "wx/settings.h"
  22     #include "wx/brush.h"
  23     #include "wx/utils.h"
  24     #include "wx/log.h"
  25 #endif
  26
  27 #if wxUSE_CLIPBOARD
  28     #include "wx/app.h"
  29     #include "wx/clipbrd.h"
  30 #endif
  31
  32 #include "wx/textfile.h"
  33
  34 #include "wx/os2/private.h"
  35
  36 #include <string.h>
  37 #include <stdlib.h>
  38 #include <sys/types.h>
  39
  40 #if wxUSE_IOSTREAMH
  41 #   include <fstream.h>
  42 #else
  43 #   include <fstream>
  44 #endif
  45
  46 #if !USE_SHARED_LIBRARY
  47
  48 // ----------------------------------------------------------------------------
  49 // event tables and other macros
  50 // ----------------------------------------------------------------------------
  51
  52 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxControl)
  53
  54 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
  55     EVT_CHAR(wxTextCtrl::OnChar)
  56     EVT_DROP_FILES(wxTextCtrl::OnDropFiles)
  57
  58     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
  59     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
  60     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
  61     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
  62     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
  63
  64     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
  65     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
  66     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
  67     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
  68     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
  69 END_EVENT_TABLE()
  70
  71 #endif // USE_SHARED_LIBRARY
  72
  73 // ============================================================================
  74 // implementation
  75 // ============================================================================
  76
  77 // ----------------------------------------------------------------------------
  78 // creation
  79 // ----------------------------------------------------------------------------
  80
  81 wxTextCtrl::wxTextCtrl()
  82 {
  83 }
  84
  85 bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id,
  86                         const wxString& value,
  87                         const wxPoint& pos,
  88                         const wxSize& size,
  89                         long style,
  90 #if wxUSE_VALIDATORS
  91                         const wxValidator& validator,
  92 #endif
  93                         const wxString& name)
  94 {
  95     // base initialization
  96     if ( !CreateBase(parent, id, pos, size, style, validator, name) )
  97         return FALSE;
  98
  99     // Validator was set in CreateBase
 100     //SetValidator(validator);
 101     if ( parent )
 102         parent->AddChild(this);
 103
 104     // set colours
 105     SetupColours();
 106
 107     // translate wxWin style flags to MSW ones, checking for consistency while
 108     // doing it
 109 // TODO:
 110 /*
 111     long msStyle = ES_LEFT | WS_VISIBLE | WS_CHILD | WS_TABSTOP;
 112     if ( m_windowStyle & wxTE_MULTILINE )
 113     {
 114         wxASSERT_MSG( !(m_windowStyle & wxTE_PROCESS_ENTER),
 115                       wxT("wxTE_PROCESS_ENTER style is ignored for multiline "
 116                          "text controls (they always process it)") );
 117
 118         msStyle |= ES_MULTILINE | ES_WANTRETURN;
 119         if ((m_windowStyle & wxTE_NO_VSCROLL) == 0)
 120             msStyle |= WS_VSCROLL;
 121         m_windowStyle |= wxTE_PROCESS_ENTER;
 122     }
 123     else
 124         msStyle |= ES_AUTOHSCROLL;
 125
 126     if (m_windowStyle & wxHSCROLL)
 127         msStyle |= (WS_HSCROLL | ES_AUTOHSCROLL);
 128
 129     if (m_windowStyle & wxTE_READONLY)
 130         msStyle |= ES_READONLY;
 131
 132     if (m_windowStyle & wxHSCROLL)
 133         msStyle |= (WS_HSCROLL | ES_AUTOHSCROLL);
 134     if (m_windowStyle & wxTE_PASSWORD) // hidden input
 135         msStyle |= ES_PASSWORD;
 136
 137     // we always want the characters and the arrows
 138     m_lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
 139
 140     // we may have several different cases:
 141     // 1. normal case: both TAB and ENTER are used for dialog navigation
 142     // 2. ctrl which wants TAB for itself: ENTER is used to pass to the next
 143     //    control in the dialog
 144     // 3. ctrl which wants ENTER for itself: TAB is used for dialog navigation
 145     // 4. ctrl which wants both TAB and ENTER: Ctrl-ENTER is used to pass to
 146     //    the next control
 147     if ( m_windowStyle & wxTE_PROCESS_ENTER )
 148         m_lDlgCode |= DLGC_WANTMESSAGE;
 149     if ( m_windowStyle & wxTE_PROCESS_TAB )
 150         m_lDlgCode |= DLGC_WANTTAB;
 151
 152     // do create the control - either an EDIT or RICHEDIT
 153     const wxChar *windowClass = wxT("EDIT");
 154
 155     bool want3D;
 156     WXDWORD exStyle = Determine3DEffects(WS_EX_CLIENTEDGE, &want3D);
 157
 158     // Even with extended styles, need to combine with WS_BORDER for them to
 159     // look right.
 160     if ( want3D || wxStyleHasBorder(m_windowStyle) )
 161         msStyle |= WS_BORDER;
 162
 163     // NB: don't use pos and size as CreateWindowEx arguments because they
 164     //     might be -1 in which case we should use the default values (and
 165     //     SetSize called below takes care of it)
 166     m_hWnd = (WXHWND)::CreateWindowEx(exStyle,
 167                                       windowClass,
 168                                       NULL,
 169                                       msStyle,
 170                                       0, 0, 0, 0,
 171                                       GetHwndOf(parent),
 172                                       (HMENU)m_windowId,
 173                                       wxGetInstance(),
 174                                       NULL);
 175
 176     wxCHECK_MSG( m_hWnd, FALSE, wxT("Failed to create text ctrl") );
 177 */
 178     SubclassWin(GetHWND());
 179
 180     // set font, position, size and initial value
 181     wxFont& fontParent = parent->GetFont();
 182     if ( fontParent.Ok() )
 183     {
 184         SetFont(fontParent);
 185     }
 186     else
 187     {
 188         SetFont(wxSystemSettings::GetSystemFont(wxSYS_SYSTEM_FONT));
 189     }
 190
 191     SetSize(pos.x, pos.y, size.x, size.y);
 192
 193     return TRUE;
 194 }
 195
 196 // Make sure the window style (etc.) reflects the HWND style (roughly)
 197 void wxTextCtrl::AdoptAttributesFromHWND()
 198 {
 199   wxWindow::AdoptAttributesFromHWND();
 200
 201   HWND hWnd = GetHwnd();
 202   // TODO:
 203   /*
 204   long style = GetWindowLong(hWnd, GWL_STYLE);
 205
 206   if (style & ES_MULTILINE)
 207     m_windowStyle |= wxTE_MULTILINE;
 208   if (style & ES_PASSWORD)
 209     m_windowStyle |= wxTE_PASSWORD;
 210   if (style & ES_READONLY)
 211     m_windowStyle |= wxTE_READONLY;
 212   if (style & ES_WANTRETURN)
 213     m_windowStyle |= wxTE_PROCESS_ENTER;
 214   */
 215 }
 216
 217 void wxTextCtrl::SetupColours()
 218 {
 219     // FIXME why is bg colour not inherited from parent?
 220     SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOW));
 221     SetForegroundColour(GetParent()->GetForegroundColour());
 222 }
 223
 224 // ----------------------------------------------------------------------------
 225 // set/get the controls text
 226 // ----------------------------------------------------------------------------
 227
 228 wxString wxTextCtrl::GetValue() const
 229 {
 230     return wxGetWindowText(GetHWND());
 231 }
 232
 233 void wxTextCtrl::SetValue(const wxString& value)
 234 {
 235 // TODO:
 236 /*
 237     wxString valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
 238
 239     SetWindowText(GetHwnd(), valueDos);
 240
 241     AdjustSpaceLimit();
 242 */
 243 }
 244
 245 void wxTextCtrl::WriteText(const wxString& value)
 246 {
 247 // TODO:
 248 /*
 249     wxString valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
 250
 251     SendMessage(GetHwnd(), EM_REPLACESEL, 0, (LPARAM)valueDos.c_str());
 252
 253     AdjustSpaceLimit();
 254 */
 255 }
 256
 257 void wxTextCtrl::AppendText(const wxString& text)
 258 {
 259 // TODO:
 260 /*
 261     SetInsertionPointEnd();
 262     WriteText(text);
 263 */
 264 }
 265
 266 void wxTextCtrl::Clear()
 267 {
 268 //    SetWindowText(GetHwnd(), wxT(""));
 269 }
 270
 271 // ----------------------------------------------------------------------------
 272 // Clipboard operations
 273 // ----------------------------------------------------------------------------
 274
 275 void wxTextCtrl::Copy()
 276 {
 277     if (CanCopy())
 278     {
 279         HWND hWnd = GetHwnd();
 280 //        SendMessage(hWnd, WM_COPY, 0, 0L);
 281     }
 282 }
 283
 284 void wxTextCtrl::Cut()
 285 {
 286     if (CanCut())
 287     {
 288         HWND hWnd = GetHwnd();
 289 //        SendMessage(hWnd, WM_CUT, 0, 0L);
 290     }
 291 }
 292
 293 void wxTextCtrl::Paste()
 294 {
 295     if (CanPaste())
 296     {
 297         HWND hWnd = GetHwnd();
 298 //        SendMessage(hWnd, WM_PASTE, 0, 0L);
 299     }
 300 }
 301
 302 bool wxTextCtrl::CanCopy() const
 303 {
 304     // Can copy if there's a selection
 305     long from, to;
 306 //    GetSelection(& from, & to);
 307     return (from != to);
 308 }
 309
 310 bool wxTextCtrl::CanCut() const
 311 {
 312     // Can cut if there's a selection
 313     long from, to;
 314 //    GetSelection(& from, & to);
 315     return (from != to);
 316 }
 317
 318 bool wxTextCtrl::CanPaste() const
 319 {
 320     if (!IsEditable())
 321         return FALSE;
 322
 323     // Standard edit control: check for straight text on clipboard
 324     bool isTextAvailable = FALSE;
 325 //TODO:
 326 /*
 327     if ( ::OpenClipboard(GetHwndOf(wxTheApp->GetTopWindow())) )
 328     {
 329         isTextAvailable = (::IsClipboardFormatAvailable(CF_TEXT) != 0);
 330         ::CloseClipboard();
 331     }
 332 */
 333     return isTextAvailable;
 334 }
 335
 336 // ----------------------------------------------------------------------------
 337 // Accessors
 338 // ----------------------------------------------------------------------------
 339
 340 void wxTextCtrl::SetEditable(bool editable)
 341 {
 342     HWND hWnd = GetHwnd();
 343 //    SendMessage(hWnd, EM_SETREADONLY, (WPARAM)!editable, (LPARAM)0L);
 344 }
 345
 346 void wxTextCtrl::SetInsertionPoint(long pos)
 347 {
 348 // TODO:
 349 /*
 350     HWND hWnd = GetHwnd();
 351     {
 352         SendMessage(hWnd, EM_SETSEL, pos, pos);
 353         SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
 354     }
 355     static const char *nothing = "";
 356     SendMessage(hWnd, EM_REPLACESEL, 0, (LPARAM)nothing);
 357 */
 358 }
 359
 360 void wxTextCtrl::SetInsertionPointEnd()
 361 {
 362 // TODO:
 363 /*
 364     long pos = GetLastPosition();
 365     SetInsertionPoint(pos);
 366 */
 367 }
 368
 369 long wxTextCtrl::GetInsertionPoint() const
 370 {
 371 // TODO:
 372 /*
 373     DWORD Pos = (DWORD)SendMessage(GetHwnd(), EM_GETSEL, 0, 0L);
 374     return Pos & 0xFFFF;
 375 */
 376     return 0;
 377 }
 378
 379 long wxTextCtrl::GetLastPosition() const
 380 {
 381     HWND hWnd = GetHwnd();
 382
 383 // TODO:
 384 /*
 385     // Will always return a number > 0 (according to docs)
 386     int noLines = (int)SendMessage(hWnd, EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0L);
 387
 388     // This gets the char index for the _beginning_ of the last line
 389     int charIndex = (int)SendMessage(hWnd, EM_LINEINDEX, (WPARAM)(noLines-1), (LPARAM)0L);
 390
 391     // Get number of characters in the last line. We'll add this to the character
 392     // index for the last line, 1st position.
 393     int lineLength = (int)SendMessage(hWnd, EM_LINELENGTH, (WPARAM)charIndex, (LPARAM)0L);
 394
 395     return (long)(charIndex + lineLength);
 396 */
 397     return 0L;
 398 }
 399
 400 // If the return values from and to are the same, there is no
 401 // selection.
 402 void wxTextCtrl::GetSelection(long* from, long* to) const
 403 {
 404     DWORD dwStart, dwEnd;
 405     MPARAM wParam = (MPARAM) (DWORD*) & dwStart; // receives starting position
 406     MPARAM lParam = (MPARAM) (DWORD*) & dwEnd;   // receives ending position
 407
 408 //    ::SendMessage(GetHwnd(), EM_GETSEL, wParam, lParam);
 409
 410     *from = dwStart;
 411     *to = dwEnd;
 412 }
 413
 414 bool wxTextCtrl::IsEditable() const
 415 {
 416 // TODO:
 417 /*
 418     long style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
 419
 420     return ((style & ES_READONLY) == 0);
 421 */
 422     return FALSE;
 423 }
 424
 425 // ----------------------------------------------------------------------------
 426 // Editing
 427 // ----------------------------------------------------------------------------
 428
 429 void wxTextCtrl::Replace(long from, long to, const wxString& value)
 430 {
 431 #if wxUSE_CLIPBOARD
 432     HWND hWnd = GetHwnd();
 433     long fromChar = from;
 434     long toChar = to;
 435
 436     // Set selection and remove it
 437 //    SendMessage(hWnd, EM_SETSEL, fromChar, toChar);
 438 //    SendMessage(hWnd, WM_CUT, (WPARAM)0, (LPARAM)0);
 439
 440     // Now replace with 'value', by pasting.
 441     wxSetClipboardData(wxDF_TEXT, (wxObject *) (const wxChar *)value, 0, 0);
 442
 443     // Paste into edit control
 444 //    SendMessage(hWnd, WM_PASTE, (WPARAM)0, (LPARAM)0L);
 445 #else
 446     wxFAIL_MSG("wxTextCtrl::Replace not implemented if wxUSE_CLIPBOARD is 0.");
 447 #endif
 448 }
 449
 450 void wxTextCtrl::Remove(long from, long to)
 451 {
 452     HWND hWnd = GetHwnd();
 453     long fromChar = from;
 454     long toChar = to;
 455
 456     // Cut all selected text
 457 //    SendMessage(hWnd, EM_SETSEL, fromChar, toChar);
 458 //    SendMessage(hWnd, WM_CUT, (WPARAM)0, (LPARAM)0);
 459 }
 460
 461 void wxTextCtrl::SetSelection(long from, long to)
 462 {
 463     HWND hWnd = GetHwnd();
 464     long fromChar = from;
 465     long toChar = to;
 466
 467     // if from and to are both -1, it means (in wxWindows) that all text should
 468     // be selected. Translate into Windows convention
 469     if ((from == -1) && (to == -1))
 470     {
 471       fromChar = 0;
 472       toChar = -1;
 473     }
 474
 475 //    SendMessage(hWnd, EM_SETSEL, (WPARAM)fromChar, (LPARAM)toChar);
 476 //    SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
 477 }
 478
 479 bool wxTextCtrl::LoadFile(const wxString& file)
 480 {
 481 // TODO:
 482 /*
 483     if ( wxTextCtrlBase::LoadFile(file) )
 484     {
 485         // update the size limit if needed
 486         AdjustSpaceLimit();
 487
 488         return TRUE;
 489     }
 490 */
 491     return FALSE;
 492 }
 493
 494 bool wxTextCtrl::IsModified() const
 495 {
 496 //    return (SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0);
 497     return FALSE;
 498 }
 499
 500 // Makes 'unmodified'
 501 void wxTextCtrl::DiscardEdits()
 502 {
 503 //    SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0L);
 504 }
 505
 506 int wxTextCtrl::GetNumberOfLines() const
 507 {
 508 //    return (int)SendMessage(GetHwnd(), EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0);
 509     return 0;
 510 }
 511
 512 long wxTextCtrl::XYToPosition(long x, long y) const
 513 {
 514     HWND hWnd = GetHwnd();
 515
 516     // This gets the char index for the _beginning_ of this line
 517 // TODO:
 518 /*
 519     int charIndex = (int)SendMessage(hWnd, EM_LINEINDEX, (WPARAM)y, (LPARAM)0);
 520     return (long)(x + charIndex);
 521 */
 522     return 0L;
 523 }
 524
 525 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
 526 {
 527     HWND hWnd = GetHwnd();
 528
 529     // This gets the line number containing the character
 530     int lineNo;
 531 //    lineNo = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, 0);
 532
 533     if ( lineNo == -1 )
 534     {
 535         // no such line
 536         return FALSE;
 537     }
 538
 539     // This gets the char index for the _beginning_ of this line
 540     int charIndex = 0; // TODO: (int)SendMessage(hWnd, EM_LINEINDEX, (WPARAM)lineNo, (LPARAM)0);
 541     if ( charIndex == -1 )
 542     {
 543         return FALSE;
 544     }
 545
 546     // The X position must therefore be the different between pos and charIndex
 547     if ( x )
 548         *x = (long)(pos - charIndex);
 549     if ( y )
 550         *y = (long)lineNo;
 551
 552     return TRUE;
 553 }
 554
 555 void wxTextCtrl::ShowPosition(long pos)
 556 {
 557     HWND hWnd = GetHwnd();
 558
 559     // To scroll to a position, we pass the number of lines and characters
 560     // to scroll *by*. This means that we need to:
 561     // (1) Find the line position of the current line.
 562     // (2) Find the line position of pos.
 563     // (3) Scroll by (pos - current).
 564     // For now, ignore the horizontal scrolling.
 565
 566     // Is this where scrolling is relative to - the line containing the caret?
 567     // Or is the first visible line??? Try first visible line.
 568 //    int currentLineLineNo1 = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)-1, (LPARAM)0L);
 569
 570 // TODO:
 571 /*
 572     int currentLineLineNo = (int)SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, (WPARAM)0, (LPARAM)0L);
 573
 574     int specifiedLineLineNo = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, (LPARAM)0L);
 575
 576     int linesToScroll = specifiedLineLineNo - currentLineLineNo;
 577
 578     if (linesToScroll != 0)
 579       (void)SendMessage(hWnd, EM_LINESCROLL, (WPARAM)0, (LPARAM)linesToScroll);
 580 */
 581 }
 582
 583 int wxTextCtrl::GetLineLength(long lineNo) const
 584 {
 585 // TODO:
 586 /*
 587
 588     long charIndex = XYToPosition(0, lineNo);
 589     int len = (int)SendMessage(GetHwnd(), EM_LINELENGTH, charIndex, 0);
 590     return len;
 591 */
 592     return 0;
 593 }
 594
 595 wxString wxTextCtrl::GetLineText(long lineNo) const
 596 {
 597     size_t len = (size_t)GetLineLength(lineNo) + 1;
 598     char *buf = (char *)malloc(len);
 599     *(WORD *)buf = len;
 600     int noChars = 0; // TODO:(int)SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf);
 601     buf[noChars] = 0;
 602
 603     wxString str(buf);
 604
 605     free(buf);
 606
 607     return str;
 608 }
 609
 610 // ----------------------------------------------------------------------------
 611 // Undo/redo
 612 // ----------------------------------------------------------------------------
 613
 614 void wxTextCtrl::Undo()
 615 {
 616     if (CanUndo())
 617     {
 618 //        ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
 619     }
 620 }
 621
 622 void wxTextCtrl::Redo()
 623 {
 624     if (CanRedo())
 625     {
 626         // Same as Undo, since Undo undoes the undo, i.e. a redo.
 627 //        ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
 628     }
 629 }
 630
 631 bool wxTextCtrl::CanUndo() const
 632 {
 633 //    return (::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0);
 634     return FALSE;
 635 }
 636
 637 bool wxTextCtrl::CanRedo() const
 638 {
 639 //    return (::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0);
 640     return FALSE;
 641 }
 642
 643 // ----------------------------------------------------------------------------
 644 // implemenation details
 645 // ----------------------------------------------------------------------------
 646
 647 void wxTextCtrl::Command(wxCommandEvent & event)
 648 {
 649     SetValue(event.GetString());
 650     ProcessCommand (event);
 651 }
 652
 653 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
 654 {
 655     // By default, load the first file into the text window.
 656     if (event.GetNumberOfFiles() > 0)
 657     {
 658         LoadFile(event.GetFiles()[0]);
 659     }
 660 }
 661
 662 WXHBRUSH wxTextCtrl::OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor,
 663                                 WXUINT message, WXWPARAM wParam,
 664                                 WXLPARAM lParam)
 665 {
 666     HDC hdc = (HDC)pDC;
 667 // TODO:
 668 /*
 669     SetBkMode(hdc, GetParent()->GetTransparentBackground() ? TRANSPARENT
 670                                                            : OPAQUE);
 671
 672     ::SetBkColor(hdc, RGB(GetBackgroundColour().Red(), GetBackgroundColour().Green(), GetBackgroundColour().Blue()));
 673     ::SetTextColor(hdc, RGB(GetForegroundColour().Red(), GetForegroundColour().Green(), GetForegroundColour().Blue()));
 674 */
 675     wxBrush *backgroundBrush = wxTheBrushList->FindOrCreateBrush(GetBackgroundColour(), wxSOLID);
 676
 677     return (WXHBRUSH) backgroundBrush->GetResourceHandle();
 678 }
 679
 680 void wxTextCtrl::OnChar(wxKeyEvent& event)
 681 {
 682     switch ( event.KeyCode() )
 683     {
 684 // TODO:
 685 /*
 686         case WXK_RETURN:
 687             if ( !(m_windowStyle & wxTE_MULTILINE) )
 688             {
 689                 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
 690                 event.SetEventObject( this );
 691                 if ( GetEventHandler()->ProcessEvent(event) )
 692                     return;
 693             }
 694             //else: multiline controls need Enter for themselves
 695
 696             break;
 697
 698         case WXK_TAB:
 699             // always produce navigation event - even if we process TAB
 700             // ourselves the fact that we got here means that the user code
 701             // decided to skip processing of this TAB - probably to let it
 702             // do its default job.
 703             //
 704             // NB: Notice that Ctrl-Tab is handled elsewhere and Alt-Tab is
 705             //     handled by Windows
 706             {
 707                 wxNavigationKeyEvent eventNav;
 708                 eventNav.SetDirection(!event.ShiftDown());
 709                 eventNav.SetWindowChange(FALSE);
 710                 eventNav.SetEventObject(this);
 711
 712                 if ( GetEventHandler()->ProcessEvent(eventNav) )
 713                     return;
 714             }
 715             break;
 716 */
 717         default:
 718             event.Skip();
 719             return;
 720     }
 721
 722     // don't just call event.Skip() because this will cause TABs and ENTERs
 723     // be passed upwards and we don't always want this - instead process it
 724     // right here
 725
 726     // FIXME
 727     event.Skip();
 728 }
 729
 730 bool wxTextCtrl::OS2Command(WXUINT param, WXWORD WXUNUSED(id))
 731 {
 732     switch (param)
 733     {
 734 // TODO:
 735 /*
 736         case EN_SETFOCUS:
 737         case EN_KILLFOCUS:
 738             {
 739                 wxFocusEvent event(param == EN_KILLFOCUS ? wxEVT_KILL_FOCUS
 740                         : wxEVT_SET_FOCUS,
 741                         m_windowId);
 742                 event.SetEventObject( this );
 743                 GetEventHandler()->ProcessEvent(event);
 744             }
 745             break;
 746
 747         case EN_CHANGE:
 748             {
 749                 wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, m_windowId);
 750                 wxString val(GetValue());
 751                 if ( !val.IsNull() )
 752                     event.m_commandString = WXSTRINGCAST val;
 753                 event.SetEventObject( this );
 754                 ProcessCommand(event);
 755             }
 756             break;
 757
 758         case EN_ERRSPACE:
 759             // the text size limit has been hit - increase it
 760             AdjustSpaceLimit();
 761             break;
 762
 763             // the other notification messages are not processed
 764         case EN_UPDATE:
 765         case EN_MAXTEXT:
 766         case EN_HSCROLL:
 767         case EN_VSCROLL:
 768 */
 769         default:
 770             return FALSE;
 771     }
 772
 773     // processed
 774     return TRUE;
 775 }
 776
 777 void wxTextCtrl::AdjustSpaceLimit()
 778 {
 779 // TODO:
 780 /*
 781     unsigned int len = ::GetWindowTextLength(GetHwnd()),
 782     limit = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
 783     if ( len > limit )
 784     {
 785         limit = len + 0x8000;    // 32Kb
 786
 787         if ( limit > 0xffff )
 788             ::SendMessage(GetHwnd(), EM_LIMITTEXT, 0, limit);
 789         else
 790             ::SendMessage(GetHwnd(), EM_LIMITTEXT, limit, 0);
 791     }
 792 */
 793 }
 794
 795 bool wxTextCtrl::AcceptsFocus() const
 796 {
 797     // we don't want focus if we can't be edited
 798     return IsEditable() && wxControl::AcceptsFocus();
 799 }
 800
 801 wxSize wxTextCtrl::DoGetBestSize() const
 802 {
 803     int cx, cy;
 804     wxGetCharSize(GetHWND(), &cx, &cy, (wxFont*)&GetFont());
 805
 806     int wText = DEFAULT_ITEM_WIDTH;
 807
 808     int hText = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy);
 809     if ( m_windowStyle & wxTE_MULTILINE )
 810     {
 811         hText *= wxMin(GetNumberOfLines(), 5);
 812     }
 813     //else: for single line control everything is ok
 814
 815     return wxSize(wText, hText);
 816 }
 817
 818 // ----------------------------------------------------------------------------
 819 // standard handlers for standard edit menu events
 820 // ----------------------------------------------------------------------------
 821
 822 void wxTextCtrl::OnCut(wxCommandEvent& event)
 823 {
 824     Cut();
 825 }
 826
 827 void wxTextCtrl::OnCopy(wxCommandEvent& event)
 828 {
 829     Copy();
 830 }
 831
 832 void wxTextCtrl::OnPaste(wxCommandEvent& event)
 833 {
 834     Paste();
 835 }
 836
 837 void wxTextCtrl::OnUndo(wxCommandEvent& event)
 838 {
 839     Undo();
 840 }
 841
 842 void wxTextCtrl::OnRedo(wxCommandEvent& event)
 843 {
 844     Redo();
 845 }
 846
 847 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
 848 {
 849     event.Enable( CanCut() );
 850 }
 851
 852 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
 853 {
 854     event.Enable( CanCopy() );
 855 }
 856
 857 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
 858 {
 859     event.Enable( CanPaste() );
 860 }
 861
 862 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
 863 {
 864     event.Enable( CanUndo() );
 865 }
 866
 867 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
 868 {
 869     event.Enable( CanRedo() );
 870 }
 871