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     HWND                            hParent;
 105     int                             nTempy;
 106
 107     //
 108     // Base initialization
 109     //
 110     if ( !CreateBase( pParent
 111                      ,vId
 112                      ,rPos
 113                      ,rSize
 114                      ,lStyle
 115                      ,rValidator
 116                      ,rsName
 117                     ))
 118         return FALSE;
 119
 120     wxPoint                         vPos = rPos; // The OS/2 position
 121     SWP                             vSwp;
 122
 123     if (pParent )
 124     {
 125         pParent->AddChild(this);
 126     }
 127
 128     m_windowStyle = lStyle;
 129     m_bIsMLE = FALSE;
 130
 131     long                            lSstyle = WS_VISIBLE | WS_TABSTOP;
 132
 133     //
 134     // Single and multiline edit fields are two different controls in PM
 135     //
 136     if ( m_windowStyle & wxTE_MULTILINE )
 137     {
 138         lSstyle |= MLS_BORDER | MLS_WORDWRAP;
 139         m_bIsMLE = TRUE;
 140
 141         if ((m_windowStyle & wxTE_NO_VSCROLL) == 0)
 142             lSstyle |= MLS_VSCROLL;
 143         if (m_windowStyle & wxHSCROLL)
 144             lSstyle |= MLS_HSCROLL;
 145         if (m_windowStyle & wxTE_READONLY)
 146             lSstyle |= MLS_READONLY;
 147     }
 148     else
 149     {
 150         lSstyle |= ES_LEFT | ES_AUTOSCROLL | ES_MARGIN;
 151
 152         if (m_windowStyle & wxHSCROLL)
 153             lSstyle |=  ES_AUTOSCROLL;
 154         if (m_windowStyle & wxTE_READONLY)
 155             lSstyle |= ES_READONLY;
 156         if (m_windowStyle & wxTE_PASSWORD) // hidden input
 157             lSstyle |= ES_UNREADABLE;
 158     }
 159
 160     if (m_bIsMLE)
 161     {
 162         m_hWnd = (WXHWND)::WinCreateWindow( (HWND)GetHwndOf(pParent) // Parent window handle
 163                                            ,WC_MLE                   // Window class
 164                                            ,(PSZ)rsValue.c_str()     // Initial Text
 165                                            ,(ULONG)lSstyle           // Style flags
 166                                            ,(LONG)0                  // X pos of origin
 167                                            ,(LONG)0                  // Y pos of origin
 168                                            ,(LONG)0                  // field width
 169                                            ,(LONG)0                  // field height
 170                                            ,(HWND)GetHwndOf(pParent) // owner window handle (same as parent
 171                                            ,HWND_TOP                 // initial z position
 172                                            ,(ULONG)vId               // Window identifier
 173                                            ,NULL                     // no control data
 174                                            ,NULL                     // no Presentation parameters
 175                                           );
 176     }
 177     else
 178     {
 179         m_hWnd = (WXHWND)::WinCreateWindow( (HWND)GetHwndOf(pParent) // Parent window handle
 180                                            ,WC_ENTRYFIELD            // Window class
 181                                            ,(PSZ)rsValue.c_str()     // Initial Text
 182                                            ,(ULONG)lSstyle           // Style flags
 183                                            ,(LONG)0                  // X pos of origin
 184                                            ,(LONG)0                  // Y pos of origin
 185                                            ,(LONG)0                  // field width
 186                                            ,(LONG)0                  // field height
 187                                            ,(HWND)GetHwndOf(pParent) // owner window handle (same as parent
 188                                            ,HWND_TOP                 // initial z position
 189                                            ,(ULONG)vId               // Window identifier
 190                                            ,NULL                     // no control data
 191                                            ,NULL                     // no Presentation parameters
 192                                           );
 193     }
 194
 195     if (m_hWnd == 0)
 196     {
 197         return FALSE;
 198     }
 199
 200     SubclassWin(GetHWND());
 201
 202     //
 203     // Set font, position, size and initial value
 204     //
 205     wxFont*                          pTextFont = new wxFont( 8
 206                                                             ,wxMODERN
 207                                                             ,wxNORMAL
 208                                                             ,wxNORMAL
 209                                                            );
 210     SetFont(*pTextFont);
 211     if (!rsValue.IsEmpty())
 212     {
 213         SetValue(rsValue);
 214     }
 215     SetupColours();
 216     //
 217     // If X and/or Y are not zero the difference is the compensation value
 218     // for margins for OS/2 controls.
 219     //
 220     ::WinQueryWindowPos(m_hWnd, &vSwp);
 221     SetXComp(vSwp.x);
 222     SetYComp(vSwp.y);
 223     SetSize( vPos.x - GetXComp()
 224             ,vPos.y - GetYComp()
 225             ,rSize.x
 226             ,rSize.y
 227            );
 228     delete pTextFont;
 229     return TRUE;
 230 } // end of wxTextCtrl::Create
 231
 232 //
 233 // Make sure the window style (etc.) reflects the HWND style (roughly)
 234 //
 235 void wxTextCtrl::AdoptAttributesFromHWND()
 236 {
 237     HWND                            hWnd = GetHwnd();
 238     LONG                            lStyle = ::WinQueryWindowULong(hWnd, QWL_STYLE);
 239
 240     wxWindow::AdoptAttributesFromHWND();
 241
 242     if (m_bIsMLE)
 243     {
 244         m_windowStyle |= wxTE_MULTILINE;
 245         if (lStyle & MLS_READONLY)
 246             m_windowStyle |= wxTE_READONLY;
 247     }
 248     else
 249     {
 250         if (lStyle & ES_UNREADABLE)
 251             m_windowStyle |= wxTE_PASSWORD;
 252         if (lStyle & ES_READONLY)
 253             m_windowStyle |= wxTE_READONLY;
 254     }
 255 } // end of wxTextCtrl::AdoptAttributesFromHWND
 256
 257 WXDWORD wxTextCtrl::OS2GetStyle(
 258   long                              lStyle
 259 , WXDWORD*                          pdwExstyle
 260 ) const
 261 {
 262     //
 263     // Default border for the text controls is the sunken one
 264     //
 265     if ((lStyle & wxBORDER_MASK) == wxBORDER_DEFAULT )
 266     {
 267         lStyle |= wxBORDER_SUNKEN;
 268     }
 269
 270     long                            dwStyle = wxControl::OS2GetStyle( lStyle
 271                                                                      ,pdwExstyle
 272                                                                     );
 273
 274     dwStyle = WS_VISIBLE | WS_TABSTOP;
 275
 276     //
 277     // Single and multiline edit fields are two different controls in PM
 278     //
 279     if ( m_windowStyle & wxTE_MULTILINE )
 280     {
 281         dwStyle |= MLS_BORDER | MLS_WORDWRAP;
 282         if ((m_windowStyle & wxTE_NO_VSCROLL) == 0)
 283             dwStyle |= MLS_VSCROLL;
 284         if (m_windowStyle & wxHSCROLL)
 285             dwStyle |= MLS_HSCROLL;
 286         if (m_windowStyle & wxTE_READONLY)
 287             dwStyle |= MLS_READONLY;
 288     }
 289     else
 290     {
 291         dwStyle |= ES_LEFT | ES_AUTOSCROLL | ES_MARGIN;
 292         if (m_windowStyle & wxHSCROLL)
 293             dwStyle |=  ES_AUTOSCROLL;
 294         if (m_windowStyle & wxTE_READONLY)
 295             dwStyle |= ES_READONLY;
 296         if (m_windowStyle & wxTE_PASSWORD) // hidden input
 297             dwStyle |= ES_UNREADABLE;
 298     }
 299     return dwStyle;
 300 } // end of wxTextCtrl::OS2GetStyle
 301
 302 void wxTextCtrl::SetWindowStyleFlag(
 303   long                              lStyle
 304 )
 305 {
 306     wxControl::SetWindowStyleFlag(lStyle);
 307 } // end of wxTextCtrl::SetWindowStyleFlag
 308
 309 void wxTextCtrl::SetupColours()
 310 {
 311     wxColour                        vBkgndColour;
 312
 313     vBkgndColour = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
 314     SetBackgroundColour(vBkgndColour);
 315     SetForegroundColour(GetParent()->GetForegroundColour());
 316     if (m_bIsMLE)
 317     {
 318         ::WinSendMsg( GetHwnd()
 319                      ,MLM_SETTEXTCOLOR
 320                      ,(MPARAM)GetParent()->GetForegroundColour().GetPixel()
 321                      ,(MPARAM)MLE_RGB
 322                     );
 323     }
 324 } // end of wxTextCtrl::SetupColours
 325
 326 // ----------------------------------------------------------------------------
 327 // set/get the controls text
 328 // ----------------------------------------------------------------------------
 329
 330 wxString wxTextCtrl::GetValue() const
 331 {
 332     wxString                        sStr = wxGetWindowText(GetHWND());
 333     char*                           zStr = (char*)sStr.c_str();
 334
 335     for ( ; *zStr; zStr++ )
 336     {
 337         //
 338         // this will replace \r\n with just \n
 339         //
 340         if (*zStr == '\n')
 341             *zStr = '\0';
 342         if (*zStr == '\r')
 343             *zStr = '\n';
 344     }
 345     return sStr;
 346 } // end of wxTextCtrl::GetValue
 347
 348 void wxTextCtrl::SetValue(
 349   const wxString&                   rsValue
 350 )
 351 {
 352     //
 353     // If the text is long enough, it's faster to just set it instead of first
 354     // comparing it with the old one (chances are that it will be different
 355     // anyhow, this comparison is there to avoid flicker for small single-line
 356     // edit controls mostly)
 357     //
 358     if ((rsValue.length() > 0x400) || (rsValue != GetValue()))
 359     {
 360         ::WinSetWindowText(GetHwnd(), rsValue.c_str());
 361         AdjustSpaceLimit();
 362     }
 363 } // end of wxTextCtrl::SetValue
 364
 365 void wxTextCtrl::WriteText(
 366   const wxString&                   rsValue
 367 )
 368 {
 369     if (m_bIsMLE)
 370         ::WinSendMsg(GetHwnd(), MLM_INSERT, MPARAM((PCHAR)rsValue.c_str()), MPARAM(0));
 371     else
 372         ::WinSetWindowText(GetHwnd(), rsValue.c_str());
 373     AdjustSpaceLimit();
 374 } // end of wxTextCtrl::WriteText
 375
 376 void wxTextCtrl::AppendText(
 377   const wxString&                   rsText
 378 )
 379 {
 380     SetInsertionPointEnd();
 381     WriteText(rsText);
 382 } // end of wxTextCtrl::AppendText
 383
 384 void wxTextCtrl::Clear()
 385 {
 386     ::WinSetWindowText(GetHwnd(), "");
 387 } // end of wxTextCtrl::Clear
 388
 389 bool wxTextCtrl::EmulateKeyPress(
 390   const wxKeyEvent&                 rEvent
 391 )
 392 {
 393     SetFocus();
 394     return(wxTextCtrlBase::EmulateKeyPress(rEvent));
 395 } // end of wxTextCtrl::EmulateKeyPress
 396
 397 // ----------------------------------------------------------------------------
 398 // Clipboard operations
 399 // ----------------------------------------------------------------------------
 400
 401 void wxTextCtrl::Copy()
 402 {
 403     if (CanCopy())
 404     {
 405         HWND hWnd = GetHwnd();
 406         if (m_bIsMLE)
 407             ::WinSendMsg(hWnd, MLM_COPY, 0, 0);
 408         else
 409             ::WinSendMsg(hWnd, EM_COPY, 0, 0);
 410     }
 411 } // end of wxTextCtrl::Copy
 412
 413 void wxTextCtrl::Cut()
 414 {
 415     if (CanCut())
 416     {
 417         HWND hWnd = GetHwnd();
 418
 419         if (m_bIsMLE)
 420             ::WinSendMsg(hWnd, MLM_CUT, 0, 0);
 421         else
 422             ::WinSendMsg(hWnd, EM_CUT, 0, 0);
 423     }
 424 } // end of wxTextCtrl::Cut
 425
 426 void wxTextCtrl::Paste()
 427 {
 428     if (CanPaste())
 429     {
 430         HWND                        hWnd = GetHwnd();
 431
 432         ::WinSendMsg(hWnd, EM_PASTE, 0, 0);
 433     }
 434 } // end of wxTextCtrl::Paste
 435
 436 bool wxTextCtrl::CanCopy() const
 437 {
 438     //
 439     // Can copy if there's a selection
 440     //
 441     long                            lFrom = 0L;
 442     long                            lTo = 0L;
 443
 444     GetSelection(&lFrom, &lTo);
 445     return (lFrom != lTo);
 446 } // end of wxTextCtrl::CanCopy
 447
 448 bool wxTextCtrl::CanCut() const
 449 {
 450     //
 451     // Can cut if there's a selection
 452     //
 453     long                            lFrom = 0L;
 454     long                            lTo = 0L;
 455
 456     GetSelection(&lFrom, &lTo);
 457     return (lFrom != lTo);
 458 } // end of wxTextCtrl::CanCut
 459
 460 bool wxTextCtrl::CanPaste() const
 461 {
 462     bool                            bIsTextAvailable = FALSE;
 463
 464     if (!IsEditable())
 465         return FALSE;
 466
 467     //
 468     // Check for straight text on clipboard
 469     //
 470     if (::WinOpenClipbrd(vHabmain))
 471     {
 472         bIsTextAvailable = (::WinQueryClipbrdData(vHabmain, CF_TEXT) != 0);
 473         ::WinCloseClipbrd(vHabmain);
 474     }
 475     return bIsTextAvailable;
 476 } // end of wxTextCtrl::CanPaste
 477
 478 // ----------------------------------------------------------------------------
 479 // Accessors
 480 // ----------------------------------------------------------------------------
 481
 482 void wxTextCtrl::SetEditable(
 483   bool                              bEditable
 484 )
 485 {
 486     HWND                            hWnd = GetHwnd();
 487
 488     if (m_bIsMLE)
 489         ::WinSendMsg(hWnd, MLM_SETREADONLY, MPFROMLONG(!bEditable), (MPARAM)0);
 490     else
 491         ::WinSendMsg(hWnd, EM_SETREADONLY, MPFROMLONG(!bEditable), (MPARAM)0);
 492 } // end of wxTextCtrl::SetEditable
 493
 494 void wxTextCtrl::SetInsertionPoint(
 495   long                              lPos
 496 )
 497 {
 498     HWND                            hWnd = GetHwnd();
 499
 500     if (m_bIsMLE)
 501         ::WinSendMsg(hWnd, MLM_SETSEL, (MPARAM)lPos, (MPARAM)lPos);
 502     else
 503         ::WinSendMsg(hWnd, EM_SETSEL, MPFROM2SHORT((USHORT)lPos, (USHORT)lPos), (MPARAM)0);
 504 } // end of wxTextCtrl::SetInsertionPoint
 505
 506 void wxTextCtrl::SetInsertionPointEnd()
 507 {
 508     long                            lPos = GetLastPosition();
 509
 510     //
 511     // We must not do anything if the caret is already there because calling
 512     // SetInsertionPoint() thaws the controls if Freeze() had been called even
 513     // if it doesn't actually move the caret anywhere and so the simple fact of
 514     // doing it results in horrible flicker when appending big amounts of text
 515     // to the control in a few chunks (see DoAddText() test in the text sample)
 516     //
 517     if (GetInsertionPoint() == GetLastPosition())
 518         return;
 519     SetInsertionPoint(lPos);
 520 } // end of wxTextCtrl::SetInsertionPointEnd
 521
 522 long wxTextCtrl::GetInsertionPoint() const
 523 {
 524     WXDWORD                         dwPos = 0L;
 525
 526     if (m_bIsMLE)
 527         dwPos = (WXDWORD)::WinSendMsg(GetHwnd(), MLM_QUERYSEL, (MPARAM)MLFQS_MINSEL, 0);
 528     else
 529     {
 530         dwPos = (WXDWORD)::WinSendMsg(GetHwnd(), EM_QUERYSEL, 0, 0);
 531         dwPos = SHORT1FROMMP((MPARAM)dwPos);  // the first 16 bit value is the min pos
 532     }
 533     return (dwPos & 0xFFFF);
 534 } // end of wxTextCtrl::GetInsertionPoint
 535
 536 long wxTextCtrl::GetLastPosition() const
 537 {
 538     HWND                            hWnd = GetHwnd();
 539     long                            lCharIndex;
 540     long                            lLineLength;
 541
 542     if (m_bIsMLE)
 543     {
 544         lCharIndex = 0;
 545
 546         //
 547         // This just gets the total text length.  The last will be this value
 548         //
 549         lLineLength = (long)::WinSendMsg(hWnd, MLM_QUERYTEXTLENGTH, 0, 0);
 550     }
 551     else
 552     {
 553         WNDPARAMS                   vParams;
 554
 555         lCharIndex = 0;
 556         vParams.fsStatus = WPM_CCHTEXT;
 557         if (::WinSendMsg( GetHwnd()
 558                          ,WM_QUERYWINDOWPARAMS
 559                          ,&vParams
 560                          ,0
 561                         ))
 562         {
 563             lLineLength = (long)vParams.cchText;
 564         }
 565         else
 566             lLineLength = 0;
 567     }
 568     return(lCharIndex + lLineLength);
 569 } // end of wxTextCtrl::GetLastPosition
 570
 571 // If the return values from and to are the same, there is no
 572 // selection.
 573 void wxTextCtrl::GetSelection(
 574   long*                             plFrom
 575 , long*                             plTo
 576 ) const
 577 {
 578     WXDWORD                         dwPos;
 579
 580     if (m_bIsMLE)
 581         dwPos = (WXDWORD)::WinSendMsg(GetHwnd(), MLM_QUERYSEL, (MPARAM)MLFQS_MINSEL, 0);
 582     else
 583     {
 584         dwPos = (WXDWORD)::WinSendMsg(GetHwnd(), EM_QUERYSEL, 0, 0);
 585     }
 586     *plFrom = SHORT1FROMMP((MPARAM)dwPos);  // the first 16 bit value is the min pos
 587     *plTo = SHORT2FROMMP((MPARAM)dwPos);  // the first 16 bit value is the min pos
 588 } // end of wxTextCtrl::GetSelection
 589
 590 bool wxTextCtrl::IsEditable() const
 591 {
 592     if (m_bIsMLE)
 593         return((bool)LONGFROMMR(::WinSendMsg(GetHwnd(), MLM_QUERYREADONLY, 0, 0)));
 594     else
 595         return((bool)LONGFROMMR(::WinSendMsg(GetHwnd(), EM_QUERYREADONLY, 0, 0)));
 596 } // end of wxTextCtrl::IsEditable
 597
 598 // ----------------------------------------------------------------------------
 599 // Editing
 600 // ----------------------------------------------------------------------------
 601
 602 void wxTextCtrl::Replace(
 603   long                              lFrom
 604 , long                              lTo
 605 , const wxString&                   rsValue
 606 )
 607 {
 608 #if wxUSE_CLIPBOARD
 609     HWND                            hWnd      = GetHwnd();
 610     long                            lFromChar = lFrom;
 611     long                            lToChar   = lTo;
 612
 613     //
 614     // Set selection and remove it
 615     //
 616     if (m_bIsMLE)
 617     {
 618         ::WinSendMsg(hWnd, MLM_SETSEL, MPFROM2SHORT((USHORT)lFrom, (USHORT)lTo), 0);
 619         ::WinSendMsg(hWnd, MLM_CUT, 0, 0);
 620     }
 621     else
 622     {
 623         ::WinSendMsg(hWnd, EM_SETSEL, MPFROM2SHORT((USHORT)lFrom, (USHORT)lTo), 0);
 624         ::WinSendMsg(hWnd, EM_CUT, 0, 0);
 625     }
 626
 627     //
 628     // Now replace with 'value', by pasting.
 629     //
 630     wxSetClipboardData(wxDF_TEXT, (wxObject *) (const wxChar *)rsValue, 0, 0);
 631
 632     // Paste into edit control
 633     if (m_bIsMLE)
 634         ::WinSendMsg(hWnd, MLM_PASTE, (MPARAM)0, (MPARAM)0);
 635     else
 636         ::WinSendMsg(hWnd, EM_PASTE, (MPARAM)0, (MPARAM)0);
 637 #else
 638     wxFAIL_MSG("wxTextCtrl::Replace not implemented if wxUSE_CLIPBOARD is 0.");
 639 #endif
 640 }  // end of wxTextCtrl::Replace
 641
 642 void wxTextCtrl::Remove(
 643   long                              lFrom
 644 , long                              lTo
 645 )
 646 {
 647     HWND                            hWnd      = GetHwnd();
 648     long                            lFromChar = lFrom;
 649     long                            lToChar   = lTo;
 650
 651     if (m_bIsMLE)
 652     {
 653         ::WinSendMsg(hWnd, MLM_SETSEL, MPFROM2SHORT((USHORT)lFrom, (USHORT)lTo), 0);
 654         ::WinSendMsg(hWnd, MLM_CUT, 0, 0);
 655     }
 656     else
 657     {
 658         ::WinSendMsg(hWnd, EM_SETSEL, MPFROM2SHORT((USHORT)lFrom, (USHORT)lTo), 0);
 659         ::WinSendMsg(hWnd, EM_CUT, 0, 0);
 660     }
 661 } // end of wxTextCtrl::Remove
 662
 663 void wxTextCtrl::SetSelection(
 664   long                              lFrom
 665 , long                              lTo
 666 )
 667 {
 668     HWND                            hWnd = GetHwnd();
 669     long                            lFromChar = lFrom;
 670     long                            lToChar = lTo;
 671
 672     //
 673     // If from and to are both -1, it means (in wxWindows) that all text should
 674     // be selected. Translate into Windows convention
 675     //
 676     if ((lFrom == -1L) && (lTo == -1L))
 677     {
 678         lFromChar = 0L;
 679         lToChar   = -1L;
 680     }
 681     if (m_bIsMLE)
 682         ::WinSendMsg(hWnd, MLM_SETSEL, (MPARAM)lFromChar, (MPARAM)lToChar);
 683     else
 684         ::WinSendMsg(hWnd, EM_SETSEL, MPFROM2SHORT((USHORT)lFromChar, (USHORT)lToChar), (MPARAM)0);
 685 } // end of wxTextCtrl::SetSelection
 686
 687 bool wxTextCtrl::LoadFile(
 688   const wxString&                   rsFile
 689 )
 690 {
 691     if ( wxTextCtrlBase::LoadFile(rsFile) )
 692     {
 693         //
 694         // Update the size limit if needed
 695         //
 696         AdjustSpaceLimit();
 697         return TRUE;
 698     }
 699     return FALSE;
 700 } // end of wxTextCtrl::LoadFile
 701
 702 bool wxTextCtrl::IsModified() const
 703 {
 704     bool                            bRc;
 705
 706     if (m_bIsMLE)
 707         bRc = (bool)LONGFROMMR(::WinSendMsg(GetHwnd(), MLM_QUERYCHANGED, 0, 0));
 708     else
 709         bRc = (bool)LONGFROMMR(::WinSendMsg(GetHwnd(), EM_QUERYCHANGED, 0, 0));
 710     return bRc;
 711 } // end of wxTextCtrl::IsModified
 712
 713 //
 714 // Makes 'unmodified'
 715 //
 716 void wxTextCtrl::DiscardEdits()
 717 {
 718     if (m_bIsMLE)
 719         ::WinSendMsg(GetHwnd(), MLM_SETCHANGED, MPFROMLONG(FALSE), 0);
 720     else
 721         //
 722         // EM controls do not have a SETCHANGED but issuing a query should reset it
 723         //
 724         ::WinSendMsg(GetHwnd(), EM_QUERYCHANGED, 0, 0);
 725 } // end of wxTextCtrl::DiscardEdits
 726
 727 int wxTextCtrl::GetNumberOfLines() const
 728 {
 729     int                             nNumLines;
 730
 731     if (m_bIsMLE)
 732         nNumLines = (int)::WinSendMsg(GetHwnd(), MLM_QUERYLINECOUNT, 0, 0);
 733     else
 734         nNumLines = 1;
 735     return nNumLines;
 736 } // end of wxTextCtrl::GetNumberOfLines
 737
 738 long wxTextCtrl::XYToPosition(
 739   long                              lX
 740 , long                              lY
 741 ) const
 742 {
 743     HWND                            hWnd = GetHwnd();
 744     long                            lCharIndex = 0L;
 745     long                            lLen;
 746
 747     if (m_bIsMLE)
 748     {
 749         lLen = (long)::WinSendMsg(GetHwnd(), MLM_QUERYLINELENGTH, 0, 0);
 750         lCharIndex = ((lLen * lY) + lX);
 751     }
 752     else
 753         lCharIndex = lX;
 754     return lCharIndex;
 755 } // end of wxTextCtrl::XYToPosition
 756
 757 bool wxTextCtrl::PositionToXY(
 758   long                              lPos
 759 , long*                             plX
 760 , long*                             plY
 761 ) const
 762 {
 763     HWND                            hWnd = GetHwnd();
 764     long                            nLineNo = -1;
 765     long                            lCharIndex = 0;
 766
 767     if (m_bIsMLE)
 768         nLineNo = (long)::WinSendMsg(hWnd, MLM_LINEFROMCHAR, (MPARAM)lPos, 0);
 769     else
 770         nLineNo = 0;
 771
 772     if (nLineNo == -1)
 773     {
 774         // no such line
 775         return FALSE;
 776     }
 777
 778     //
 779     // This gets the char index for the _beginning_ of this line
 780     //
 781     long                            lLineWidth;
 782
 783     if (m_bIsMLE)
 784     {
 785         lLineWidth = (long)::WinSendMsg(hWnd, MLM_QUERYLINELENGTH, (MPARAM)0, (MPARAM)0);
 786         lCharIndex = (nLineNo + 1) * lLineWidth;
 787     }
 788     else
 789     {
 790         WNDPARAMS                   vParams;
 791
 792         vParams.fsStatus = WPM_CCHTEXT;
 793         if (::WinSendMsg( hWnd
 794                          ,WM_QUERYWINDOWPARAMS
 795                          ,&vParams
 796                          ,0
 797                         ))
 798         {
 799             lCharIndex = vParams.cchText;
 800         }
 801         else
 802             lCharIndex = 32;
 803     }
 804
 805     if (lCharIndex == -1)
 806     {
 807         return FALSE;
 808     }
 809
 810     //
 811     // The X position must therefore be the difference between pos and charIndex
 812     //
 813     if (plX)
 814         *plX = lPos - lCharIndex;
 815     if (plY)
 816         *plY = nLineNo;
 817
 818     return TRUE;
 819 } // end of wxTextCtrl::PositionToXY
 820
 821 void wxTextCtrl::ShowPosition(
 822   long                              lPos
 823 )
 824 {
 825     HWND                            hWnd = GetHwnd();
 826     long                            lCurrentLineLineNo = 0L;
 827
 828     // To scroll to a position, we pass the number of lines and characters
 829     // to scroll *by*. This means that we need to:
 830     // (1) Find the line position of the current line.
 831     // (2) Find the line position of pos.
 832     // (3) Scroll by (pos - current).
 833     // For now, ignore the horizontal scrolling.
 834
 835     //
 836     // Is this where scrolling is relative to - the line containing the caret?
 837     // Or is the first visible line??? Try first visible line.
 838     //
 839     if (m_bIsMLE)
 840     {
 841         //
 842         // In PM this is the actual char position
 843         //
 844         lCurrentLineLineNo = (long)::WinSendMsg(hWnd, MLM_QUERYFIRSTCHAR, (MPARAM)0, (MPARAM)0);
 845
 846         //
 847         // This will cause a scroll to the selected position
 848         //
 849         ::WinSendMsg(hWnd, MLM_SETSEL, (MPARAM)lCurrentLineLineNo, (MPARAM)lCurrentLineLineNo);
 850     }
 851 } // end of wxTextCtrl::ShowPosition
 852
 853 int wxTextCtrl::GetLineLength(
 854   long                              lLineNo
 855 ) const
 856 {
 857     long                            lLen = 0L;
 858
 859     if (m_bIsMLE)
 860         lLen = (long)::WinSendMsg(GetHwnd(), MLM_QUERYLINELENGTH, 0, 0);
 861     else
 862     {
 863         WNDPARAMS                   vParams;
 864
 865         vParams.fsStatus = WPM_CCHTEXT;
 866         if (::WinSendMsg( GetHwnd()
 867                          ,WM_QUERYWINDOWPARAMS
 868                          ,&vParams
 869                          ,0
 870                         ))
 871         {
 872             lLen = vParams.cchText;
 873         }
 874         else
 875             lLen = 32;
 876     }
 877     return lLen;
 878 } // end ofwxTextCtrl::GetLineLength
 879
 880 wxString wxTextCtrl::GetLineText(
 881   long                              lLineNo
 882 ) const
 883 {
 884     long                            lLen = (long)GetLineLength((long)lLineNo) + 1;
 885     wxString                        sStr;
 886     char*                           zBuf;
 887
 888     //
 889     // There must be at least enough place for the length WORD in the
 890     // buffer
 891     //
 892     lLen += sizeof(WORD);
 893     zBuf = new char[lLen];
 894     if (m_bIsMLE)
 895     {
 896         long                        lIndex;
 897         long                        lBuflen;
 898         long                        lCopied;
 899
 900         lLen = (long)::WinSendMsg(GetHwnd(), MLM_QUERYLINELENGTH, 0, 0);
 901         lIndex = lLen * lLineNo;
 902
 903         ::WinSendMsg(GetHwnd(), MLM_SETSEL, (MPARAM)lIndex, (MPARAM)lIndex);
 904         ::WinSendMsg(GetHwnd(), MLM_SETIMPORTEXPORT, MPFROMP(zBuf), MPFROMSHORT((USHORT)sizeof(zBuf)));
 905         lBuflen = (long)::WinSendMsg(GetHwnd(), MLM_QUERYFORMATTEXTLENGTH, MPFROMLONG(lIndex), MPFROMLONG(-1));
 906         lCopied = (long)::WinSendMsg(GetHwnd(), MLM_EXPORT, MPFROMP(&lIndex), MPFROMP(&lBuflen));
 907         zBuf[lCopied] = '\0';
 908     }
 909     else
 910     {
 911         WNDPARAMS                   vParams;
 912
 913         vParams.fsStatus = WPM_CCHTEXT;
 914         if (::WinSendMsg( GetHwnd()
 915                          ,WM_QUERYWINDOWPARAMS
 916                          ,&vParams
 917                          ,0
 918                         ))
 919          memcpy(zBuf, vParams.pszText, vParams.cchText);
 920          zBuf[vParams.cchText] = '\0';
 921      }
 922      sStr = zBuf;
 923      delete [] zBuf;
 924      return sStr;
 925 } // end of wxTextCtrl::GetLineText
 926
 927 // ----------------------------------------------------------------------------
 928 // Undo/redo
 929 // ----------------------------------------------------------------------------
 930
 931 void wxTextCtrl::Undo()
 932 {
 933     if (CanUndo())
 934     {
 935         if (m_bIsMLE)
 936             ::WinSendMsg(GetHwnd(), MLM_UNDO, 0, 0);
 937         // Simple entryfields cannot be undone
 938     }
 939 } // end of wxTextCtrl::Undo
 940
 941 void wxTextCtrl::Redo()
 942 {
 943     if (CanRedo())
 944     {
 945         if (m_bIsMLE)
 946             ::WinSendMsg(GetHwnd(), MLM_UNDO, 0, 0);
 947         // Simple entryfields cannot be undone
 948     }
 949 } // end of wxTextCtrl::Redo
 950
 951 bool wxTextCtrl::CanUndo() const
 952 {
 953     bool                            bOk;
 954
 955     if (m_bIsMLE)
 956         bOk = (::WinSendMsg(GetHwnd(), MLM_QUERYUNDO, 0, 0) != 0);
 957     else
 958         bOk = FALSE; // can't undo regular edit fields in PM
 959     return bOk;
 960 } // end of wxTextCtrl::CanUndo
 961
 962 bool wxTextCtrl::CanRedo() const
 963 {
 964     bool                            bOk;
 965
 966     if (m_bIsMLE)
 967         bOk = (::WinSendMsg(GetHwnd(), MLM_QUERYUNDO, 0, 0) != 0);
 968     else
 969         bOk = FALSE; // can't undo regular edit fields in PM
 970     return bOk;
 971 } // end of wxTextCtrl::CanRedo
 972
 973 // ----------------------------------------------------------------------------
 974 // implemenation details
 975 // ----------------------------------------------------------------------------
 976
 977 void wxTextCtrl::Command(
 978   wxCommandEvent&                   rEvent
 979 )
 980 {
 981     SetValue(rEvent.GetString());
 982     ProcessCommand (rEvent);
 983 } // end of wxTextCtrl::Command
 984
 985 void wxTextCtrl::OnDropFiles(
 986   wxDropFilesEvent&                 rEvent
 987 )
 988 {
 989     // By default, load the first file into the text window.
 990     if (rEvent.GetNumberOfFiles() > 0)
 991     {
 992         LoadFile(rEvent.GetFiles()[0]);
 993     }
 994 } // end of wxTextCtrl::OnDropFiles
 995
 996 WXHBRUSH wxTextCtrl::OnCtlColor(
 997   WXHDC                             hWxDC
 998 , WXHWND                            hWnd
 999 , WXUINT                            uCtlColor
1000 , WXUINT                            uMessage
1001 , WXWPARAM                          wParam
1002 , WXLPARAM                          lParam
1003 )
1004 {
1005     HPS                             hPS = (HPS)hWxDC;
1006     wxBrush*                        pBrush = NULL;
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.KeyCode())
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*                 pEfd;
1149         WNDPARAMS                   vParams;
1150
1151         vParams.fsStatus = WPM_CBCTLDATA;
1152         vParams.cbCtlData = sizeof(ENTRYFDATA);
1153
1154         if (::WinSendMsg( GetHwnd()
1155                          ,WM_QUERYWINDOWPARAMS
1156                          ,&vParams
1157                          ,0
1158                         ))
1159         {
1160             pEfd = (ENTRYFDATA*)vParams.pCtlData;
1161             uLimit = (unsigned int)pEfd->cchEditLimit;
1162         }
1163         else
1164             uLimit = 32; //PM's default
1165     }
1166     if (uLen >= uLimit)
1167     {
1168         uLimit = uLen + 0x8000;    // 32Kb
1169         if (uLimit > 0xffff)
1170         {
1171             uLimit = 0L;
1172         }
1173         if (m_bIsMLE)
1174             ::WinSendMsg(GetHwnd(), MLM_SETTEXTLIMIT, MPFROMLONG(uLimit), 0);
1175         else
1176             ::WinSendMsg(GetHwnd(), EM_SETTEXTLIMIT, MPFROMLONG(uLimit), 0);
1177     }
1178 } // end of wxTextCtrl::AdjustSpaceLimit
1179
1180 bool wxTextCtrl::AcceptsFocus() const
1181 {
1182     //
1183     // We don't want focus if we can't be edited unless we're a multiline
1184     // control because then it might be still nice to get focus from keyboard
1185     // to be able to scroll it without mouse
1186     //
1187     return (IsEditable() || IsMultiLine()) && wxControl::AcceptsFocus();
1188 } // end of wxTextCtrl::Command
1189
1190 wxSize wxTextCtrl::DoGetBestSize() const
1191 {
1192     int                             nCx;
1193     int                             nCy;
1194
1195     wxGetCharSize(GetHWND(), &nCx, &nCy, (wxFont*)&GetFont());
1196
1197     int                             wText = DEFAULT_ITEM_WIDTH;
1198     int                             hText = (EDIT_HEIGHT_FROM_CHAR_HEIGHT(nCy) * .8);
1199
1200     if (m_windowStyle & wxTE_MULTILINE)
1201     {
1202         hText *= wxMax(GetNumberOfLines(), 5);
1203     }
1204     //else: for single line control everything is ok
1205     return wxSize(wText, hText);
1206 } // end of wxTextCtrl::DoGetBestSize
1207
1208 // ----------------------------------------------------------------------------
1209 // standard handlers for standard edit menu events
1210 // ----------------------------------------------------------------------------
1211
1212 void wxTextCtrl::OnCut(
1213   wxCommandEvent&                   rEvent
1214 )
1215 {
1216     Cut();
1217 } // end of wxTextCtrl::OnCut
1218
1219 void wxTextCtrl::OnCopy(
1220   wxCommandEvent&                   rEvent
1221 )
1222 {
1223     Copy();
1224 } // end of wxTextCtrl::OnCopy
1225
1226 void wxTextCtrl::OnPaste(
1227   wxCommandEvent&                   rEvent
1228 )
1229 {
1230     Paste();
1231 } // end of wxTextCtrl::OnPaste
1232
1233 void wxTextCtrl::OnUndo(
1234   wxCommandEvent&                   rEvent
1235 )
1236 {
1237     Undo();
1238 } // end of wxTextCtrl::OnUndo
1239
1240 void wxTextCtrl::OnRedo(
1241   wxCommandEvent&                   rEvent
1242 )
1243 {
1244     Redo();
1245 } // end of wxTextCtrl::OnRedo
1246
1247 void wxTextCtrl::OnDelete(
1248   wxCommandEvent&                   rEvent
1249 )
1250 {
1251     long                            lFrom;
1252     long                            lTo;
1253
1254     GetSelection( &lFrom
1255                  ,&lTo
1256                 );
1257     if (lFrom != -1 && lTo != -1)
1258         Remove( lFrom
1259                ,lTo
1260               );
1261 } // end of wxTextCtrl::OnDelete
1262
1263 void wxTextCtrl::OnSelectAll(
1264   wxCommandEvent&                   rEvent
1265 )
1266 {
1267     SetSelection(-1, -1);
1268 } // end of wxTextCtrl::OnSelectAll
1269
1270 void wxTextCtrl::OnUpdateCut(
1271   wxUpdateUIEvent&                  rEvent
1272 )
1273 {
1274     rEvent.Enable(CanCut());
1275 } // end of wxTextCtrl::OnUpdateCut
1276
1277 void wxTextCtrl::OnUpdateCopy(
1278   wxUpdateUIEvent&                  rEvent
1279 )
1280 {
1281     rEvent.Enable(CanCopy());
1282 } // end of wxTextCtrl::OnUpdateCopy
1283
1284 void wxTextCtrl::OnUpdatePaste(
1285   wxUpdateUIEvent&                  rEvent
1286 )
1287 {
1288     rEvent.Enable(CanPaste());
1289 } // end of wxTextCtrl::OnUpdatePaste
1290
1291 void wxTextCtrl::OnUpdateUndo(
1292   wxUpdateUIEvent&                  rEvent
1293 )
1294 {
1295     rEvent.Enable(CanUndo());
1296 } // end of wxTextCtrl::OnUpdateUndo
1297
1298 void wxTextCtrl::OnUpdateRedo(
1299   wxUpdateUIEvent&                  rEvent
1300 )
1301 {
1302     rEvent.Enable(CanRedo());
1303 } // end of wxTextCtrl::OnUpdateRedo
1304
1305 void wxTextCtrl::OnUpdateDelete(
1306   wxUpdateUIEvent&                  rEvent
1307 )
1308 {
1309     long                            lFrom;
1310     long                            lTo;
1311
1312     GetSelection( &lFrom
1313                  ,&lTo
1314                 );
1315     rEvent.Enable( lFrom != -1L && lTo != -1L && lFrom != lTo && IsEditable()) ;
1316 } // end of wxTextCtrl::OnUpdateDelete
1317
1318 void wxTextCtrl::OnUpdateSelectAll(
1319   wxUpdateUIEvent&                  rEvent
1320 )
1321 {
1322     rEvent.Enable(GetLastPosition() > 0);
1323 } // end of wxTextCtrl::OnUpdateSelectAll
1324
1325 bool wxTextCtrl::SetBackgroundColour(
1326   const wxColour&                   rColour
1327 )
1328 {
1329     if (m_bIsMLE)
1330         ::WinSendMsg(GetHwnd(), MLM_SETBACKCOLOR, (MPARAM)rColour.GetPixel(), MLE_INDEX);
1331     return TRUE;
1332 } // end of wxTextCtrl::SetBackgroundColour
1333
1334 bool wxTextCtrl::SetForegroundColour(
1335   const wxColour&                   rColour
1336 )
1337 {
1338     if (m_bIsMLE)
1339         ::WinSendMsg(GetHwnd(), MLM_SETTEXTCOLOR, (MPARAM)rColour.GetPixel(), MLE_INDEX);
1340     return TRUE;
1341 } // end of wxTextCtrl::SetForegroundColour
1342
1343 bool wxTextCtrl::SetStyle(
1344   long                              lStart
1345 , long                              lEnd
1346 , const wxTextAttr&                 rStyle
1347 )
1348 {
1349     HWND                            hWnd = GetHwnd();
1350
1351     if (lStart > lEnd)
1352     {
1353         long                        lTmp = lStart;
1354
1355         lStart = lEnd;
1356         lEnd   = lTmp;
1357     }
1358
1359     //
1360     // We can only change the format of the selection, so select the range we
1361     // want and restore the old selection later
1362     //
1363     long                            lStartOld;
1364     long                            lEndOld;
1365
1366     GetSelection( &lStartOld
1367                  ,&lEndOld
1368                 );
1369
1370     //
1371     // But do we really have to change the selection?
1372     //
1373     bool                            bChangeSel = lStart != lStartOld ||
1374                                                  lEnd != lEndOld;
1375
1376     if (bChangeSel)
1377     {
1378         if (m_bIsMLE)
1379             ::WinSendMsg(hWnd, MLM_SETSEL, MPFROM2SHORT((USHORT)lStart, (USHORT)lEnd), 0);
1380         else
1381             ::WinSendMsg(hWnd, EM_SETSEL, MPFROM2SHORT((USHORT)lStart, (USHORT)lEnd), 0);
1382     }
1383
1384     //
1385     // TODO:: finish this part
1386     //
1387     return TRUE;
1388 } // end of wxTextCtrl::SetStyle
1389