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/scrolwin.h"
  22     #include "wx/settings.h"
  23     #include "wx/brush.h"
  24     #include "wx/utils.h"
  25     #include "wx/log.h"
  26 #endif
  27
  28 #if wxUSE_CLIPBOARD
  29     #include "wx/app.h"
  30     #include "wx/clipbrd.h"
  31 #endif
  32
  33 #include "wx/textfile.h"
  34
  35 #include "wx/os2/private.h"
  36
  37 #include <string.h>
  38 #include <stdlib.h>
  39 #include <sys/types.h>
  40
  41 #if wxUSE_IOSTREAMH
  42 #   include <fstream.h>
  43 #else
  44 #   include <fstream>
  45 #endif
  46
  47 #if !defined(MLE_INDEX)
  48 #define MLE_INDEX  0
  49 #define MLE_RGB    1
  50 #endif
  51
  52
  53 // ----------------------------------------------------------------------------
  54 // event tables and other macros
  55 // ----------------------------------------------------------------------------
  56
  57 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxControl)
  58
  59 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
  60     EVT_CHAR(wxTextCtrl::OnChar)
  61     EVT_DROP_FILES(wxTextCtrl::OnDropFiles)
  62
  63     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
  64     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
  65     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
  66     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
  67     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
  68
  69     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
  70     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
  71     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
  72     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
  73     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
  74 END_EVENT_TABLE()
  75
  76
  77 // ============================================================================
  78 // implementation
  79 // ============================================================================
  80
  81 // ----------------------------------------------------------------------------
  82 // creation
  83 // ----------------------------------------------------------------------------
  84
  85 wxTextCtrl::wxTextCtrl()
  86 {
  87 }
  88
  89 wxTextCtrl::~wxTextCtrl()
  90 {
  91 }
  92
  93 bool wxTextCtrl::Create(
  94   wxWindow*                         pParent
  95 , wxWindowID                        vId
  96 , const wxString&                   rsValue
  97 , const wxPoint&                    rPos
  98 , const wxSize&                     rSize
  99 , long                              lStyle
 100 , const wxValidator&                rValidator
 101 , const wxString&                   rsName
 102 )
 103 {
 104     //
 105     // Base initialization
 106     //
 107     if ( !CreateBase( pParent
 108                      ,vId
 109                      ,rPos
 110                      ,rSize
 111                      ,lStyle
 112                      ,rValidator
 113                      ,rsName
 114                     ))
 115         return FALSE;
 116
 117     wxPoint                         vPos = rPos; // The OS/2 position
 118     SWP                             vSwp;
 119
 120     if (pParent )
 121     {
 122         pParent->AddChild(this);
 123     }
 124
 125     m_windowStyle = lStyle;
 126     m_bIsMLE = FALSE;
 127
 128     long                            lSstyle = WS_VISIBLE | WS_TABSTOP;
 129
 130     //
 131     // Single and multiline edit fields are two different controls in PM
 132     //
 133     if ( m_windowStyle & wxTE_MULTILINE )
 134     {
 135         lSstyle |= MLS_BORDER | MLS_WORDWRAP;
 136         m_bIsMLE = TRUE;
 137
 138         if ((m_windowStyle & wxTE_NO_VSCROLL) == 0)
 139             lSstyle |= MLS_VSCROLL;
 140         if (m_windowStyle & wxHSCROLL)
 141             lSstyle |= MLS_HSCROLL;
 142         if (m_windowStyle & wxTE_READONLY)
 143             lSstyle |= MLS_READONLY;
 144     }
 145     else
 146     {
 147         lSstyle |= ES_LEFT | ES_AUTOSCROLL | ES_MARGIN;
 148
 149         if (m_windowStyle & wxHSCROLL)
 150             lSstyle |=  ES_AUTOSCROLL;
 151         if (m_windowStyle & wxTE_READONLY)
 152             lSstyle |= ES_READONLY;
 153         if (m_windowStyle & wxTE_PASSWORD) // hidden input
 154             lSstyle |= ES_UNREADABLE;
 155     }
 156
 157     if (m_bIsMLE)
 158     {
 159         m_hWnd = (WXHWND)::WinCreateWindow( (HWND)GetHwndOf(pParent) // Parent window handle
 160                                            ,WC_MLE                   // Window class
 161                                            ,(PSZ)rsValue.c_str()     // Initial Text
 162                                            ,(ULONG)lSstyle           // Style flags
 163                                            ,(LONG)0                  // X pos of origin
 164                                            ,(LONG)0                  // Y pos of origin
 165                                            ,(LONG)0                  // field width
 166                                            ,(LONG)0                  // field height
 167                                            ,(HWND)GetHwndOf(pParent) // owner window handle (same as parent
 168                                            ,HWND_TOP                 // initial z position
 169                                            ,(ULONG)vId               // Window identifier
 170                                            ,NULL                     // no control data
 171                                            ,NULL                     // no Presentation parameters
 172                                           );
 173     }
 174     else
 175     {
 176         m_hWnd = (WXHWND)::WinCreateWindow( (HWND)GetHwndOf(pParent) // Parent window handle
 177                                            ,WC_ENTRYFIELD            // Window class
 178                                            ,(PSZ)rsValue.c_str()     // Initial Text
 179                                            ,(ULONG)lSstyle           // Style flags
 180                                            ,(LONG)0                  // X pos of origin
 181                                            ,(LONG)0                  // Y pos of origin
 182                                            ,(LONG)0                  // field width
 183                                            ,(LONG)0                  // field height
 184                                            ,(HWND)GetHwndOf(pParent) // owner window handle (same as parent
 185                                            ,HWND_TOP                 // initial z position
 186                                            ,(ULONG)vId               // Window identifier
 187                                            ,NULL                     // no control data
 188                                            ,NULL                     // no Presentation parameters
 189                                           );
 190     }
 191
 192     if (m_hWnd == 0)
 193     {
 194         return FALSE;
 195     }
 196
 197     SubclassWin(GetHWND());
 198
 199     //
 200     // Set font, position, size and initial value
 201     //
 202     wxFont*                          pTextFont = new wxFont( 8
 203                                                             ,wxMODERN
 204                                                             ,wxNORMAL
 205                                                             ,wxNORMAL
 206                                                            );
 207     SetFont(*pTextFont);
 208     if (!rsValue.IsEmpty())
 209     {
 210         SetValue(rsValue);
 211     }
 212     SetupColours();
 213     //
 214     // If X and/or Y are not zero the difference is the compensation value
 215     // for margins for OS/2 controls.
 216     //
 217     ::WinQueryWindowPos(m_hWnd, &vSwp);
 218     SetXComp(vSwp.x);
 219     SetYComp(vSwp.y);
 220     SetSize( vPos.x - GetXComp()
 221             ,vPos.y - GetYComp()
 222             ,rSize.x
 223             ,rSize.y
 224            );
 225     delete pTextFont;
 226     return TRUE;
 227 } // end of wxTextCtrl::Create
 228
 229 //
 230 // Make sure the window style (etc.) reflects the HWND style (roughly)
 231 //
 232 void wxTextCtrl::AdoptAttributesFromHWND()
 233 {
 234     HWND                            hWnd = GetHwnd();
 235     LONG                            lStyle = ::WinQueryWindowULong(hWnd, QWL_STYLE);
 236
 237     wxWindow::AdoptAttributesFromHWND();
 238
 239     if (m_bIsMLE)
 240     {
 241         m_windowStyle |= wxTE_MULTILINE;
 242         if (lStyle & MLS_READONLY)
 243             m_windowStyle |= wxTE_READONLY;
 244     }
 245     else
 246     {
 247         if (lStyle & ES_UNREADABLE)
 248             m_windowStyle |= wxTE_PASSWORD;
 249         if (lStyle & ES_READONLY)
 250             m_windowStyle |= wxTE_READONLY;
 251     }
 252 } // end of wxTextCtrl::AdoptAttributesFromHWND
 253
 254 WXDWORD wxTextCtrl::OS2GetStyle(
 255   long                              lStyle
 256 , WXDWORD*                          pdwExstyle
 257 ) const
 258 {
 259     //
 260     // Default border for the text controls is the sunken one
 261     //
 262     if ((lStyle & wxBORDER_MASK) == wxBORDER_DEFAULT )
 263     {
 264         lStyle |= wxBORDER_SUNKEN;
 265     }
 266
 267     long                            dwStyle = wxControl::OS2GetStyle( lStyle
 268                                                                      ,pdwExstyle
 269                                                                     );
 270
 271     dwStyle = WS_VISIBLE | WS_TABSTOP;
 272
 273     //
 274     // Single and multiline edit fields are two different controls in PM
 275     //
 276     if ( m_windowStyle & wxTE_MULTILINE )
 277     {
 278         dwStyle |= MLS_BORDER | MLS_WORDWRAP;
 279         if ((m_windowStyle & wxTE_NO_VSCROLL) == 0)
 280             dwStyle |= MLS_VSCROLL;
 281         if (m_windowStyle & wxHSCROLL)
 282             dwStyle |= MLS_HSCROLL;
 283         if (m_windowStyle & wxTE_READONLY)
 284             dwStyle |= MLS_READONLY;
 285     }
 286     else
 287     {
 288         dwStyle |= ES_LEFT | ES_AUTOSCROLL | ES_MARGIN;
 289         if (m_windowStyle & wxHSCROLL)
 290             dwStyle |=  ES_AUTOSCROLL;
 291         if (m_windowStyle & wxTE_READONLY)
 292             dwStyle |= ES_READONLY;
 293         if (m_windowStyle & wxTE_PASSWORD) // hidden input
 294             dwStyle |= ES_UNREADABLE;
 295     }
 296     return dwStyle;
 297 } // end of wxTextCtrl::OS2GetStyle
 298
 299 void wxTextCtrl::SetWindowStyleFlag(
 300   long                              lStyle
 301 )
 302 {
 303     wxControl::SetWindowStyleFlag(lStyle);
 304 } // end of wxTextCtrl::SetWindowStyleFlag
 305
 306 void wxTextCtrl::SetupColours()
 307 {
 308     wxColour                        vBkgndColour;
 309
 310     vBkgndColour = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
 311     SetBackgroundColour(vBkgndColour);
 312     SetForegroundColour(GetParent()->GetForegroundColour());
 313     if (m_bIsMLE)
 314     {
 315         ::WinSendMsg( GetHwnd()
 316                      ,MLM_SETTEXTCOLOR
 317                      ,(MPARAM)GetParent()->GetForegroundColour().GetPixel()
 318                      ,(MPARAM)MLE_RGB
 319                     );
 320     }
 321 } // end of wxTextCtrl::SetupColours
 322
 323 // ----------------------------------------------------------------------------
 324 // set/get the controls text
 325 // ----------------------------------------------------------------------------
 326
 327 wxString wxTextCtrl::GetValue() const
 328 {
 329     wxString                        sStr = wxGetWindowText(GetHWND());
 330     char*                           zStr = (char*)sStr.c_str();
 331
 332     for ( ; *zStr; zStr++ )
 333     {
 334         //
 335         // this will replace \r\n with just \n
 336         //
 337         if (*zStr == '\n')
 338             *zStr = '\0';
 339         if (*zStr == '\r')
 340             *zStr = '\n';
 341     }
 342     return sStr;
 343 } // end of wxTextCtrl::GetValue
 344
 345 void wxTextCtrl::SetValue(
 346   const wxString&                   rsValue
 347 )
 348 {
 349     //
 350     // If the text is long enough, it's faster to just set it instead of first
 351     // comparing it with the old one (chances are that it will be different
 352     // anyhow, this comparison is there to avoid flicker for small single-line
 353     // edit controls mostly)
 354     //
 355     if ((rsValue.length() > 0x400) || (rsValue != GetValue()))
 356     {
 357         ::WinSetWindowText(GetHwnd(), rsValue.c_str());
 358         AdjustSpaceLimit();
 359     }
 360 } // end of wxTextCtrl::SetValue
 361
 362 void wxTextCtrl::WriteText(
 363   const wxString&                   rsValue
 364 )
 365 {
 366     if (m_bIsMLE)
 367         ::WinSendMsg(GetHwnd(), MLM_INSERT, MPARAM((PCHAR)rsValue.c_str()), MPARAM(0));
 368     else
 369         ::WinSetWindowText(GetHwnd(), rsValue.c_str());
 370     AdjustSpaceLimit();
 371 } // end of wxTextCtrl::WriteText
 372
 373 void wxTextCtrl::AppendText(
 374   const wxString&                   rsText
 375 )
 376 {
 377     SetInsertionPointEnd();
 378     WriteText(rsText);
 379 } // end of wxTextCtrl::AppendText
 380
 381 void wxTextCtrl::Clear()
 382 {
 383     ::WinSetWindowText(GetHwnd(), "");
 384 } // end of wxTextCtrl::Clear
 385
 386 bool wxTextCtrl::EmulateKeyPress(
 387   const wxKeyEvent&                 rEvent
 388 )
 389 {
 390     SetFocus();
 391     return(wxTextCtrlBase::EmulateKeyPress(rEvent));
 392 } // end of wxTextCtrl::EmulateKeyPress
 393
 394 // ----------------------------------------------------------------------------
 395 // Clipboard operations
 396 // ----------------------------------------------------------------------------
 397
 398 void wxTextCtrl::Copy()
 399 {
 400     if (CanCopy())
 401     {
 402         HWND hWnd = GetHwnd();
 403         if (m_bIsMLE)
 404             ::WinSendMsg(hWnd, MLM_COPY, 0, 0);
 405         else
 406             ::WinSendMsg(hWnd, EM_COPY, 0, 0);
 407     }
 408 } // end of wxTextCtrl::Copy
 409
 410 void wxTextCtrl::Cut()
 411 {
 412     if (CanCut())
 413     {
 414         HWND hWnd = GetHwnd();
 415
 416         if (m_bIsMLE)
 417             ::WinSendMsg(hWnd, MLM_CUT, 0, 0);
 418         else
 419             ::WinSendMsg(hWnd, EM_CUT, 0, 0);
 420     }
 421 } // end of wxTextCtrl::Cut
 422
 423 void wxTextCtrl::Paste()
 424 {
 425     if (CanPaste())
 426     {
 427         HWND                        hWnd = GetHwnd();
 428
 429         ::WinSendMsg(hWnd, EM_PASTE, 0, 0);
 430     }
 431 } // end of wxTextCtrl::Paste
 432
 433 bool wxTextCtrl::CanCopy() const
 434 {
 435     //
 436     // Can copy if there's a selection
 437     //
 438     long                            lFrom = 0L;
 439     long                            lTo = 0L;
 440
 441     GetSelection(&lFrom, &lTo);
 442     return (lFrom != lTo);
 443 } // end of wxTextCtrl::CanCopy
 444
 445 bool wxTextCtrl::CanCut() const
 446 {
 447     //
 448     // Can cut if there's a selection
 449     //
 450     long                            lFrom = 0L;
 451     long                            lTo = 0L;
 452
 453     GetSelection(&lFrom, &lTo);
 454     return (lFrom != lTo);
 455 } // end of wxTextCtrl::CanCut
 456
 457 bool wxTextCtrl::CanPaste() const
 458 {
 459     bool                            bIsTextAvailable = FALSE;
 460
 461     if (!IsEditable())
 462         return FALSE;
 463
 464     //
 465     // Check for straight text on clipboard
 466     //
 467     if (::WinOpenClipbrd(vHabmain))
 468     {
 469         bIsTextAvailable = (::WinQueryClipbrdData(vHabmain, CF_TEXT) != 0);
 470         ::WinCloseClipbrd(vHabmain);
 471     }
 472     return bIsTextAvailable;
 473 } // end of wxTextCtrl::CanPaste
 474
 475 // ----------------------------------------------------------------------------
 476 // Accessors
 477 // ----------------------------------------------------------------------------
 478
 479 void wxTextCtrl::SetEditable(
 480   bool                              bEditable
 481 )
 482 {
 483     HWND                            hWnd = GetHwnd();
 484
 485     if (m_bIsMLE)
 486         ::WinSendMsg(hWnd, MLM_SETREADONLY, MPFROMLONG(!bEditable), (MPARAM)0);
 487     else
 488         ::WinSendMsg(hWnd, EM_SETREADONLY, MPFROMLONG(!bEditable), (MPARAM)0);
 489 } // end of wxTextCtrl::SetEditable
 490
 491 void wxTextCtrl::SetInsertionPoint(
 492   long                              lPos
 493 )
 494 {
 495     HWND                            hWnd = GetHwnd();
 496
 497     if (m_bIsMLE)
 498         ::WinSendMsg(hWnd, MLM_SETSEL, (MPARAM)lPos, (MPARAM)lPos);
 499     else
 500         ::WinSendMsg(hWnd, EM_SETSEL, MPFROM2SHORT((USHORT)lPos, (USHORT)lPos), (MPARAM)0);
 501 } // end of wxTextCtrl::SetInsertionPoint
 502
 503 void wxTextCtrl::SetInsertionPointEnd()
 504 {
 505     long                            lPos = GetLastPosition();
 506
 507     //
 508     // We must not do anything if the caret is already there because calling
 509     // SetInsertionPoint() thaws the controls if Freeze() had been called even
 510     // if it doesn't actually move the caret anywhere and so the simple fact of
 511     // doing it results in horrible flicker when appending big amounts of text
 512     // to the control in a few chunks (see DoAddText() test in the text sample)
 513     //
 514     if (GetInsertionPoint() == GetLastPosition())
 515         return;
 516     SetInsertionPoint(lPos);
 517 } // end of wxTextCtrl::SetInsertionPointEnd
 518
 519 long wxTextCtrl::GetInsertionPoint() const
 520 {
 521     WXDWORD                         dwPos = 0L;
 522
 523     if (m_bIsMLE)
 524         dwPos = (WXDWORD)::WinSendMsg(GetHwnd(), MLM_QUERYSEL, (MPARAM)MLFQS_MINSEL, 0);
 525     else
 526     {
 527         dwPos = (WXDWORD)::WinSendMsg(GetHwnd(), EM_QUERYSEL, 0, 0);
 528         dwPos = SHORT1FROMMP((MPARAM)dwPos);  // the first 16 bit value is the min pos
 529     }
 530     return (dwPos & 0xFFFF);
 531 } // end of wxTextCtrl::GetInsertionPoint
 532
 533 long wxTextCtrl::GetLastPosition() const
 534 {
 535     HWND                            hWnd = GetHwnd();
 536     long                            lCharIndex;
 537     long                            lLineLength;
 538
 539     if (m_bIsMLE)
 540     {
 541         lCharIndex = 0;
 542
 543         //
 544         // This just gets the total text length.  The last will be this value
 545         //
 546         lLineLength = (long)::WinSendMsg(hWnd, MLM_QUERYTEXTLENGTH, 0, 0);
 547     }
 548     else
 549     {
 550         WNDPARAMS                   vParams;
 551
 552         lCharIndex = 0;
 553         vParams.fsStatus = WPM_CCHTEXT;
 554         if (::WinSendMsg( GetHwnd()
 555                          ,WM_QUERYWINDOWPARAMS
 556                          ,&vParams
 557                          ,0
 558                         ))
 559         {
 560             lLineLength = (long)vParams.cchText;
 561         }
 562         else
 563             lLineLength = 0;
 564     }
 565     return(lCharIndex + lLineLength);
 566 } // end of wxTextCtrl::GetLastPosition
 567
 568 // If the return values from and to are the same, there is no
 569 // selection.
 570 void wxTextCtrl::GetSelection(
 571   long*                             plFrom
 572 , long*                             plTo
 573 ) const
 574 {
 575     WXDWORD                         dwPos;
 576
 577     if (m_bIsMLE)
 578         dwPos = (WXDWORD)::WinSendMsg(GetHwnd(), MLM_QUERYSEL, (MPARAM)MLFQS_MINSEL, 0);
 579     else
 580     {
 581         dwPos = (WXDWORD)::WinSendMsg(GetHwnd(), EM_QUERYSEL, 0, 0);
 582     }
 583     *plFrom = SHORT1FROMMP((MPARAM)dwPos);  // the first 16 bit value is the min pos
 584     *plTo = SHORT2FROMMP((MPARAM)dwPos);  // the first 16 bit value is the min pos
 585 } // end of wxTextCtrl::GetSelection
 586
 587 bool wxTextCtrl::IsEditable() const
 588 {
 589     if (m_bIsMLE)
 590         return((bool)LONGFROMMR(::WinSendMsg(GetHwnd(), MLM_QUERYREADONLY, 0, 0)));
 591     else
 592         return((bool)LONGFROMMR(::WinSendMsg(GetHwnd(), EM_QUERYREADONLY, 0, 0)));
 593 } // end of wxTextCtrl::IsEditable
 594
 595 // ----------------------------------------------------------------------------
 596 // Editing
 597 // ----------------------------------------------------------------------------
 598
 599 void wxTextCtrl::Replace(
 600   long                              lFrom
 601 , long                              lTo
 602 , const wxString&                   rsValue
 603 )
 604 {
 605 #if wxUSE_CLIPBOARD
 606     HWND                            hWnd      = GetHwnd();
 607
 608     //
 609     // Set selection and remove it
 610     //
 611     if (m_bIsMLE)
 612     {
 613         ::WinSendMsg(hWnd, MLM_SETSEL, MPFROM2SHORT((USHORT)lFrom, (USHORT)lTo), 0);
 614         ::WinSendMsg(hWnd, MLM_CUT, 0, 0);
 615     }
 616     else
 617     {
 618         ::WinSendMsg(hWnd, EM_SETSEL, MPFROM2SHORT((USHORT)lFrom, (USHORT)lTo), 0);
 619         ::WinSendMsg(hWnd, EM_CUT, 0, 0);
 620     }
 621
 622     //
 623     // Now replace with 'value', by pasting.
 624     //
 625     wxSetClipboardData(wxDF_TEXT, (wxObject *) (const wxChar *)rsValue, 0, 0);
 626
 627     // Paste into edit control
 628     if (m_bIsMLE)
 629         ::WinSendMsg(hWnd, MLM_PASTE, (MPARAM)0, (MPARAM)0);
 630     else
 631         ::WinSendMsg(hWnd, EM_PASTE, (MPARAM)0, (MPARAM)0);
 632 #else
 633     wxFAIL_MSG("wxTextCtrl::Replace not implemented if wxUSE_CLIPBOARD is 0.");
 634 #endif
 635 }  // end of wxTextCtrl::Replace
 636
 637 void wxTextCtrl::Remove(
 638   long                              lFrom
 639 , long                              lTo
 640 )
 641 {
 642     HWND                            hWnd      = GetHwnd();
 643
 644     if (m_bIsMLE)
 645     {
 646         ::WinSendMsg(hWnd, MLM_SETSEL, MPFROM2SHORT((USHORT)lFrom, (USHORT)lTo), 0);
 647         ::WinSendMsg(hWnd, MLM_CUT, 0, 0);
 648     }
 649     else
 650     {
 651         ::WinSendMsg(hWnd, EM_SETSEL, MPFROM2SHORT((USHORT)lFrom, (USHORT)lTo), 0);
 652         ::WinSendMsg(hWnd, EM_CUT, 0, 0);
 653     }
 654 } // end of wxTextCtrl::Remove
 655
 656 void wxTextCtrl::SetSelection(
 657   long                              lFrom
 658 , long                              lTo
 659 )
 660 {
 661     HWND                            hWnd = GetHwnd();
 662     long                            lFromChar = lFrom;
 663     long                            lToChar = lTo;
 664
 665     //
 666     // If from and to are both -1, it means (in wxWindows) that all text should
 667     // be selected. Translate into Windows convention
 668     //
 669     if ((lFrom == -1L) && (lTo == -1L))
 670     {
 671         lFromChar = 0L;
 672         lToChar   = -1L;
 673     }
 674     if (m_bIsMLE)
 675         ::WinSendMsg(hWnd, MLM_SETSEL, (MPARAM)lFromChar, (MPARAM)lToChar);
 676     else
 677         ::WinSendMsg(hWnd, EM_SETSEL, MPFROM2SHORT((USHORT)lFromChar, (USHORT)lToChar), (MPARAM)0);
 678 } // end of wxTextCtrl::SetSelection
 679
 680 bool wxTextCtrl::LoadFile(
 681   const wxString&                   rsFile
 682 )
 683 {
 684     if ( wxTextCtrlBase::LoadFile(rsFile) )
 685     {
 686         //
 687         // Update the size limit if needed
 688         //
 689         AdjustSpaceLimit();
 690         return TRUE;
 691     }
 692     return FALSE;
 693 } // end of wxTextCtrl::LoadFile
 694
 695 bool wxTextCtrl::IsModified() const
 696 {
 697     bool                            bRc;
 698
 699     if (m_bIsMLE)
 700         bRc = (bool)LONGFROMMR(::WinSendMsg(GetHwnd(), MLM_QUERYCHANGED, 0, 0));
 701     else
 702         bRc = (bool)LONGFROMMR(::WinSendMsg(GetHwnd(), EM_QUERYCHANGED, 0, 0));
 703     return bRc;
 704 } // end of wxTextCtrl::IsModified
 705
 706 void wxTextCtrl::MarkDirty()
 707 {
 708     if (m_bIsMLE)
 709         ::WinSendMsg(GetHwnd(), MLM_SETCHANGED, MPFROMLONG(TRUE), 0);
 710     else
 711         // EM controls do not have a SETCHANGED, what can we do??
 712         wxFAIL_MSG( _T("not implemented") );
 713 }
 714
 715 //
 716 // Makes 'unmodified'
 717 //
 718 void wxTextCtrl::DiscardEdits()
 719 {
 720     if (m_bIsMLE)
 721         ::WinSendMsg(GetHwnd(), MLM_SETCHANGED, MPFROMLONG(FALSE), 0);
 722     else
 723         //
 724         // EM controls do not have a SETCHANGED but issuing a query should reset it
 725         //
 726         ::WinSendMsg(GetHwnd(), EM_QUERYCHANGED, 0, 0);
 727 } // end of wxTextCtrl::DiscardEdits
 728
 729 int wxTextCtrl::GetNumberOfLines() const
 730 {
 731     int                             nNumLines;
 732
 733     if (m_bIsMLE)
 734         nNumLines = (int)::WinSendMsg(GetHwnd(), MLM_QUERYLINECOUNT, 0, 0);
 735     else
 736         nNumLines = 1;
 737     return nNumLines;
 738 } // end of wxTextCtrl::GetNumberOfLines
 739
 740 long wxTextCtrl::XYToPosition(
 741   long                              lX
 742 , long                              lY
 743 ) const
 744 {
 745     long                            lCharIndex = 0L;
 746     long                            lLen;
 747
 748     if (m_bIsMLE)
 749     {
 750         lLen = (long)::WinSendMsg(GetHwnd(), MLM_QUERYLINELENGTH, 0, 0);
 751         lCharIndex = ((lLen * lY) + lX);
 752     }
 753     else
 754         lCharIndex = lX;
 755     return lCharIndex;
 756 } // end of wxTextCtrl::XYToPosition
 757
 758 bool wxTextCtrl::PositionToXY(
 759   long                              lPos
 760 , long*                             plX
 761 , long*                             plY
 762 ) const
 763 {
 764     HWND                            hWnd = GetHwnd();
 765     long                            nLineNo = -1;
 766     long                            lCharIndex = 0;
 767
 768     if (m_bIsMLE)
 769         nLineNo = (long)::WinSendMsg(hWnd, MLM_LINEFROMCHAR, (MPARAM)lPos, 0);
 770     else
 771         nLineNo = 0;
 772
 773     if (nLineNo == -1)
 774     {
 775         // no such line
 776         return FALSE;
 777     }
 778
 779     //
 780     // This gets the char index for the _beginning_ of this line
 781     //
 782     long                            lLineWidth;
 783
 784     if (m_bIsMLE)
 785     {
 786         lLineWidth = (long)::WinSendMsg(hWnd, MLM_QUERYLINELENGTH, (MPARAM)0, (MPARAM)0);
 787         lCharIndex = (nLineNo + 1) * lLineWidth;
 788     }
 789     else
 790     {
 791         WNDPARAMS                   vParams;
 792
 793         vParams.fsStatus = WPM_CCHTEXT;
 794         if (::WinSendMsg( hWnd
 795                          ,WM_QUERYWINDOWPARAMS
 796                          ,&vParams
 797                          ,0
 798                         ))
 799         {
 800             lCharIndex = vParams.cchText;
 801         }
 802         else
 803             lCharIndex = 32;
 804     }
 805
 806     if (lCharIndex == -1)
 807     {
 808         return FALSE;
 809     }
 810
 811     //
 812     // The X position must therefore be the difference between pos and charIndex
 813     //
 814     if (plX)
 815         *plX = lPos - lCharIndex;
 816     if (plY)
 817         *plY = nLineNo;
 818
 819     return TRUE;
 820 } // end of wxTextCtrl::PositionToXY
 821
 822 void wxTextCtrl::ShowPosition(
 823   long                              lPos
 824 )
 825 {
 826     HWND                            hWnd = GetHwnd();
 827     long                            lCurrentLineLineNo = 0L;
 828
 829     // To scroll to a position, we pass the number of lines and characters
 830     // to scroll *by*. This means that we need to:
 831     // (1) Find the line position of the current line.
 832     // (2) Find the line position of pos.
 833     // (3) Scroll by (pos - current).
 834     // For now, ignore the horizontal scrolling.
 835
 836     //
 837     // Is this where scrolling is relative to - the line containing the caret?
 838     // Or is the first visible line??? Try first visible line.
 839     //
 840     if (m_bIsMLE)
 841     {
 842         //
 843         // In PM this is the actual char position
 844         //
 845         lCurrentLineLineNo = (long)::WinSendMsg(hWnd, MLM_QUERYFIRSTCHAR, (MPARAM)0, (MPARAM)0);
 846
 847         //
 848         // This will cause a scroll to the selected position
 849         //
 850         ::WinSendMsg(hWnd, MLM_SETSEL, (MPARAM)lCurrentLineLineNo, (MPARAM)lCurrentLineLineNo);
 851     }
 852 } // end of wxTextCtrl::ShowPosition
 853
 854 int wxTextCtrl::GetLineLength(
 855   long                              lLineNo
 856 ) const
 857 {
 858     long                            lLen = 0L;
 859
 860     if (m_bIsMLE)
 861         lLen = (long)::WinSendMsg(GetHwnd(), MLM_QUERYLINELENGTH, 0, 0);
 862     else
 863     {
 864         WNDPARAMS                   vParams;
 865
 866         vParams.fsStatus = WPM_CCHTEXT;
 867         if (::WinSendMsg( GetHwnd()
 868                          ,WM_QUERYWINDOWPARAMS
 869                          ,&vParams
 870                          ,0
 871                         ))
 872         {
 873             lLen = vParams.cchText;
 874         }
 875         else
 876             lLen = 32;
 877     }
 878     return lLen;
 879 } // end ofwxTextCtrl::GetLineLength
 880
 881 wxString wxTextCtrl::GetLineText(
 882   long                              lLineNo
 883 ) const
 884 {
 885     long                            lLen = (long)GetLineLength((long)lLineNo) + 1;
 886     wxString                        sStr;
 887     char*                           zBuf;
 888
 889     //
 890     // There must be at least enough place for the length WORD in the
 891     // buffer
 892     //
 893     lLen += sizeof(WORD);
 894     zBuf = new char[lLen];
 895     if (m_bIsMLE)
 896     {
 897         long                        lIndex;
 898         long                        lBuflen;
 899         long                        lCopied;
 900
 901         lLen = (long)::WinSendMsg(GetHwnd(), MLM_QUERYLINELENGTH, 0, 0);
 902         lIndex = lLen * lLineNo;
 903
 904         ::WinSendMsg(GetHwnd(), MLM_SETSEL, (MPARAM)lIndex, (MPARAM)lIndex);
 905         ::WinSendMsg(GetHwnd(), MLM_SETIMPORTEXPORT, MPFROMP(zBuf), MPFROMSHORT((USHORT)sizeof(zBuf)));
 906         lBuflen = (long)::WinSendMsg(GetHwnd(), MLM_QUERYFORMATTEXTLENGTH, MPFROMLONG(lIndex), MPFROMLONG(-1));
 907         lCopied = (long)::WinSendMsg(GetHwnd(), MLM_EXPORT, MPFROMP(&lIndex), MPFROMP(&lBuflen));
 908         zBuf[lCopied] = '\0';
 909     }
 910     else
 911     {
 912         WNDPARAMS                   vParams;
 913
 914         vParams.fsStatus = WPM_CCHTEXT;
 915         if (::WinSendMsg( GetHwnd()
 916                          ,WM_QUERYWINDOWPARAMS
 917                          ,&vParams
 918                          ,0
 919                         ))
 920          memcpy(zBuf, vParams.pszText, vParams.cchText);
 921          zBuf[vParams.cchText] = '\0';
 922      }
 923      sStr = zBuf;
 924      delete [] zBuf;
 925      return sStr;
 926 } // end of wxTextCtrl::GetLineText
 927
 928 // ----------------------------------------------------------------------------
 929 // Undo/redo
 930 // ----------------------------------------------------------------------------
 931
 932 void wxTextCtrl::Undo()
 933 {
 934     if (CanUndo())
 935     {
 936         if (m_bIsMLE)
 937             ::WinSendMsg(GetHwnd(), MLM_UNDO, 0, 0);
 938         // Simple entryfields cannot be undone
 939     }
 940 } // end of wxTextCtrl::Undo
 941
 942 void wxTextCtrl::Redo()
 943 {
 944     if (CanRedo())
 945     {
 946         if (m_bIsMLE)
 947             ::WinSendMsg(GetHwnd(), MLM_UNDO, 0, 0);
 948         // Simple entryfields cannot be undone
 949     }
 950 } // end of wxTextCtrl::Redo
 951
 952 bool wxTextCtrl::CanUndo() const
 953 {
 954     bool                            bOk;
 955
 956     if (m_bIsMLE)
 957         bOk = (::WinSendMsg(GetHwnd(), MLM_QUERYUNDO, 0, 0) != 0);
 958     else
 959         bOk = FALSE; // can't undo regular edit fields in PM
 960     return bOk;
 961 } // end of wxTextCtrl::CanUndo
 962
 963 bool wxTextCtrl::CanRedo() const
 964 {
 965     bool                            bOk;
 966
 967     if (m_bIsMLE)
 968         bOk = (::WinSendMsg(GetHwnd(), MLM_QUERYUNDO, 0, 0) != 0);
 969     else
 970         bOk = FALSE; // can't undo regular edit fields in PM
 971     return bOk;
 972 } // end of wxTextCtrl::CanRedo
 973
 974 // ----------------------------------------------------------------------------
 975 // implemenation details
 976 // ----------------------------------------------------------------------------
 977
 978 void wxTextCtrl::Command(
 979   wxCommandEvent&                   rEvent
 980 )
 981 {
 982     SetValue(rEvent.GetString());
 983     ProcessCommand (rEvent);
 984 } // end of wxTextCtrl::Command
 985
 986 void wxTextCtrl::OnDropFiles(
 987   wxDropFilesEvent&                 rEvent
 988 )
 989 {
 990     // By default, load the first file into the text window.
 991     if (rEvent.GetNumberOfFiles() > 0)
 992     {
 993         LoadFile(rEvent.GetFiles()[0]);
 994     }
 995 } // end of wxTextCtrl::OnDropFiles
 996
 997 WXHBRUSH wxTextCtrl::OnCtlColor(
 998   WXHDC                             hWxDC
 999 , WXHWND                            hWnd
1000 , WXUINT                            uCtlColor
1001 , WXUINT                            uMessage
1002 , WXWPARAM                          wParam
1003 , WXLPARAM                          lParam
1004 )
1005 {
1006     HPS                             hPS = (HPS)hWxDC;
1007     wxColour                        vColBack = GetBackgroundColour();
1008     wxColour                        vColFore = GetForegroundColour();
1009     wxBrush*                        pBackgroundBrush = wxTheBrushList->FindOrCreateBrush( GetBackgroundColour()
1010                                                                                          ,wxSOLID
1011                                                                                         );
1012
1013     if (m_bUseCtl3D)
1014     {
1015         HBRUSH                      hBrush = NULLHANDLE;
1016
1017         return hBrush;
1018     }
1019     if (GetParent()->GetTransparentBackground())
1020         ::GpiSetBackMix(hPS, BM_LEAVEALONE);
1021     else
1022         ::GpiSetBackMix(hPS, BM_OVERPAINT);
1023     if (!IsEnabled() && (GetWindowStyle() & wxTE_MULTILINE) == 0)
1024         vColBack = wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE);
1025     ::GpiSetBackColor(hPS, vColBack.GetPixel());
1026     ::GpiSetColor(hPS, vColFore.GetPixel());
1027     return (WXHBRUSH)pBackgroundBrush->GetResourceHandle();
1028 } // end of wxTextCtrl::OnCtlColor
1029
1030 bool wxTextCtrl::OS2ShouldPreProcessMessage(
1031   WXMSG*                            pMsg
1032 )
1033 {
1034     return wxControl::OS2ShouldPreProcessMessage(pMsg);
1035 } // end of wxTextCtrl::OS2ShouldPreProcessMessage
1036
1037 void wxTextCtrl::OnChar(
1038   wxKeyEvent&                       rEvent
1039 )
1040 {
1041     switch (rEvent.GetKeyCode())
1042     {
1043         case WXK_RETURN:
1044             if ( !(m_windowStyle & wxTE_MULTILINE) )
1045             {
1046                 wxCommandEvent      vEvent(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1047
1048                 vEvent.SetEventObject(this);
1049                 if ( GetEventHandler()->ProcessEvent(vEvent))
1050                     return;
1051             }
1052             //else: multiline controls need Enter for themselves
1053
1054             break;
1055
1056         case WXK_TAB:
1057             // always produce navigation event - even if we process TAB
1058             // ourselves the fact that we got here means that the user code
1059             // decided to skip processing of this TAB - probably to let it
1060             // do its default job.
1061             //
1062             // NB: Notice that Ctrl-Tab is handled elsewhere and Alt-Tab is
1063             //     handled by Windows
1064             {
1065                 wxNavigationKeyEvent    vEventNav;
1066
1067                 vEventNav.SetDirection(!rEvent.ShiftDown());
1068                 vEventNav.SetWindowChange(FALSE);
1069                 vEventNav.SetEventObject(this);
1070
1071                 if ( GetEventHandler()->ProcessEvent(vEventNav) )
1072                     return;
1073             }
1074             break;
1075     }
1076     rEvent.Skip();
1077 } // end of wxTextCtrl::OnChar
1078
1079 bool wxTextCtrl::OS2Command(
1080   WXUINT                            uParam
1081 , WXWORD                            WXUNUSED(vId)
1082 )
1083 {
1084     switch (uParam)
1085     {
1086         case EN_SETFOCUS:
1087         case EN_KILLFOCUS:
1088             {
1089                 wxFocusEvent        vEvent( uParam == EN_KILLFOCUS ? wxEVT_KILL_FOCUS
1090                                                                    : wxEVT_SET_FOCUS
1091                                            ,m_windowId
1092                                           );
1093
1094                 vEvent.SetEventObject(this);
1095                 GetEventHandler()->ProcessEvent(vEvent);
1096             }
1097             break;
1098
1099         case EN_CHANGE:
1100             {
1101                 wxCommandEvent      vEvent( wxEVT_COMMAND_TEXT_UPDATED
1102                                            ,m_windowId
1103                                           );
1104
1105                 InitCommandEvent(vEvent);
1106                 vEvent.SetString((char*)GetValue().c_str());
1107                 ProcessCommand(vEvent);
1108             }
1109             break;
1110
1111         case EN_OVERFLOW:
1112             //
1113             // The text size limit has been hit - increase it
1114             //
1115             AdjustSpaceLimit();
1116             break;
1117
1118         case EN_SCROLL:
1119         case EN_INSERTMODETOGGLE:
1120         case EN_MEMERROR:
1121             return FALSE;
1122         default:
1123             return FALSE;
1124     }
1125
1126     //
1127     // Processed
1128     //
1129     return TRUE;
1130 } // end of wxTextCtrl::OS2Command
1131
1132 void wxTextCtrl::AdjustSpaceLimit()
1133 {
1134     unsigned int                    uLen = 0;
1135     unsigned int                    uLimit = 0;
1136
1137     uLen   = ::WinQueryWindowTextLength(GetHwnd());
1138     if (m_bIsMLE)
1139     {
1140         uLimit = (unsigned int)::WinSendMsg( GetHwnd()
1141                                             ,MLM_QUERYTEXTLIMIT
1142                                             ,0
1143                                             ,0
1144                                            );
1145     }
1146     else
1147     {
1148         ENTRYFDATA                  Efd;
1149         WNDPARAMS                   vParams;
1150
1151         vParams.fsStatus = WPM_CBCTLDATA;
1152         vParams.pCtlData = &Efd;
1153         vParams.cbCtlData = sizeof(ENTRYFDATA);
1154
1155         if (::WinSendMsg( GetHwnd()
1156                          ,WM_QUERYWINDOWPARAMS
1157                          ,&vParams
1158                          ,0
1159                         ))
1160             uLimit = (unsigned int)Efd.cchEditLimit;
1161         else
1162             uLimit = 32; //PM's default
1163     }
1164     if (uLen >= uLimit)
1165     {
1166         uLimit = uLen + 0x8000;    // 32Kb
1167         if (uLimit > 0xffff)
1168         {
1169             uLimit = 0L;
1170         }
1171         if (m_bIsMLE)
1172             ::WinSendMsg(GetHwnd(), MLM_SETTEXTLIMIT, MPFROMLONG(uLimit), 0);
1173         else
1174             ::WinSendMsg(GetHwnd(), EM_SETTEXTLIMIT, MPFROMSHORT(uLimit), 0);
1175     }
1176 } // end of wxTextCtrl::AdjustSpaceLimit
1177
1178 bool wxTextCtrl::AcceptsFocus() const
1179 {
1180     //
1181     // We don't want focus if we can't be edited unless we're a multiline
1182     // control because then it might be still nice to get focus from keyboard
1183     // to be able to scroll it without mouse
1184     //
1185     return (IsEditable() || IsMultiLine()) && wxControl::AcceptsFocus();
1186 } // end of wxTextCtrl::Command
1187
1188 wxSize wxTextCtrl::DoGetBestSize() const
1189 {
1190     int                             nCx;
1191     int                             nCy;
1192
1193     wxGetCharSize(GetHWND(), &nCx, &nCy, (wxFont*)&GetFont());
1194
1195     int                             wText = DEFAULT_ITEM_WIDTH;
1196     int                             hText = (int)(EDIT_HEIGHT_FROM_CHAR_HEIGHT(nCy) * .8);
1197
1198     if (m_windowStyle & wxTE_MULTILINE)
1199     {
1200         hText *= wxMax(GetNumberOfLines(), 5);
1201     }
1202     //else: for single line control everything is ok
1203     return wxSize(wText, hText);
1204 } // end of wxTextCtrl::DoGetBestSize
1205
1206 // ----------------------------------------------------------------------------
1207 // standard handlers for standard edit menu events
1208 // ----------------------------------------------------------------------------
1209
1210 void wxTextCtrl::OnCut(
1211   wxCommandEvent&                   rEvent
1212 )
1213 {
1214     Cut();
1215 } // end of wxTextCtrl::OnCut
1216
1217 void wxTextCtrl::OnCopy(
1218   wxCommandEvent&                   rEvent
1219 )
1220 {
1221     Copy();
1222 } // end of wxTextCtrl::OnCopy
1223
1224 void wxTextCtrl::OnPaste(
1225   wxCommandEvent&                   rEvent
1226 )
1227 {
1228     Paste();
1229 } // end of wxTextCtrl::OnPaste
1230
1231 void wxTextCtrl::OnUndo(
1232   wxCommandEvent&                   rEvent
1233 )
1234 {
1235     Undo();
1236 } // end of wxTextCtrl::OnUndo
1237
1238 void wxTextCtrl::OnRedo(
1239   wxCommandEvent&                   rEvent
1240 )
1241 {
1242     Redo();
1243 } // end of wxTextCtrl::OnRedo
1244
1245 void wxTextCtrl::OnDelete(
1246   wxCommandEvent&                   rEvent
1247 )
1248 {
1249     long                            lFrom;
1250     long                            lTo;
1251
1252     GetSelection( &lFrom
1253                  ,&lTo
1254                 );
1255     if (lFrom != -1 && lTo != -1)
1256         Remove( lFrom
1257                ,lTo
1258               );
1259 } // end of wxTextCtrl::OnDelete
1260
1261 void wxTextCtrl::OnSelectAll(
1262   wxCommandEvent&                   rEvent
1263 )
1264 {
1265     SetSelection(-1, -1);
1266 } // end of wxTextCtrl::OnSelectAll
1267
1268 void wxTextCtrl::OnUpdateCut(
1269   wxUpdateUIEvent&                  rEvent
1270 )
1271 {
1272     rEvent.Enable(CanCut());
1273 } // end of wxTextCtrl::OnUpdateCut
1274
1275 void wxTextCtrl::OnUpdateCopy(
1276   wxUpdateUIEvent&                  rEvent
1277 )
1278 {
1279     rEvent.Enable(CanCopy());
1280 } // end of wxTextCtrl::OnUpdateCopy
1281
1282 void wxTextCtrl::OnUpdatePaste(
1283   wxUpdateUIEvent&                  rEvent
1284 )
1285 {
1286     rEvent.Enable(CanPaste());
1287 } // end of wxTextCtrl::OnUpdatePaste
1288
1289 void wxTextCtrl::OnUpdateUndo(
1290   wxUpdateUIEvent&                  rEvent
1291 )
1292 {
1293     rEvent.Enable(CanUndo());
1294 } // end of wxTextCtrl::OnUpdateUndo
1295
1296 void wxTextCtrl::OnUpdateRedo(
1297   wxUpdateUIEvent&                  rEvent
1298 )
1299 {
1300     rEvent.Enable(CanRedo());
1301 } // end of wxTextCtrl::OnUpdateRedo
1302
1303 void wxTextCtrl::OnUpdateDelete(
1304   wxUpdateUIEvent&                  rEvent
1305 )
1306 {
1307     long                            lFrom;
1308     long                            lTo;
1309
1310     GetSelection( &lFrom
1311                  ,&lTo
1312                 );
1313     rEvent.Enable( lFrom != -1L && lTo != -1L && lFrom != lTo && IsEditable()) ;
1314 } // end of wxTextCtrl::OnUpdateDelete
1315
1316 void wxTextCtrl::OnUpdateSelectAll(
1317   wxUpdateUIEvent&                  rEvent
1318 )
1319 {
1320     rEvent.Enable(GetLastPosition() > 0);
1321 } // end of wxTextCtrl::OnUpdateSelectAll
1322
1323 bool wxTextCtrl::SetBackgroundColour(
1324   const wxColour&                   rColour
1325 )
1326 {
1327     if (m_bIsMLE)
1328         ::WinSendMsg(GetHwnd(), MLM_SETBACKCOLOR, (MPARAM)rColour.GetPixel(), MLE_INDEX);
1329     return TRUE;
1330 } // end of wxTextCtrl::SetBackgroundColour
1331
1332 bool wxTextCtrl::SetForegroundColour(
1333   const wxColour&                   rColour
1334 )
1335 {
1336     if (m_bIsMLE)
1337         ::WinSendMsg(GetHwnd(), MLM_SETTEXTCOLOR, (MPARAM)rColour.GetPixel(), MLE_INDEX);
1338     return TRUE;
1339 } // end of wxTextCtrl::SetForegroundColour
1340
1341 bool wxTextCtrl::SetStyle(
1342   long                              lStart
1343 , long                              lEnd
1344 , const wxTextAttr&                 rStyle
1345 )
1346 {
1347     HWND                            hWnd = GetHwnd();
1348
1349     if (lStart > lEnd)
1350     {
1351         long                        lTmp = lStart;
1352
1353         lStart = lEnd;
1354         lEnd   = lTmp;
1355     }
1356
1357     //
1358     // We can only change the format of the selection, so select the range we
1359     // want and restore the old selection later
1360     //
1361     long                            lStartOld;
1362     long                            lEndOld;
1363
1364     GetSelection( &lStartOld
1365                  ,&lEndOld
1366                 );
1367
1368     //
1369     // But do we really have to change the selection?
1370     //
1371     bool                            bChangeSel = lStart != lStartOld ||
1372                                                  lEnd != lEndOld;
1373
1374     if (bChangeSel)
1375     {
1376         if (m_bIsMLE)
1377             ::WinSendMsg(hWnd, MLM_SETSEL, MPFROM2SHORT((USHORT)lStart, (USHORT)lEnd), 0);
1378         else
1379             ::WinSendMsg(hWnd, EM_SETSEL, MPFROM2SHORT((USHORT)lStart, (USHORT)lEnd), 0);
1380     }
1381
1382     //
1383     // TODO:: finish this part
1384     //
1385     return TRUE;
1386 } // end of wxTextCtrl::SetStyle
1387