src/os2/textctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/os2/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 #include "wx/textctrl.h"
  20
  21 #ifndef WX_PRECOMP
  22     #include "wx/scrolwin.h"
  23     #include "wx/settings.h"
  24     #include "wx/brush.h"
  25     #include "wx/utils.h"
  26     #include "wx/log.h"
  27     #include "wx/app.h"
  28 #endif
  29
  30 #if wxUSE_CLIPBOARD
  31     #include "wx/clipbrd.h"
  32 #endif
  33
  34 #include "wx/textfile.h"
  35
  36 #include "wx/os2/private.h"
  37
  38 #include <string.h>
  39 #include <stdlib.h>
  40 #include <sys/types.h>
  41
  42 #if wxUSE_IOSTREAMH
  43 #   include <fstream.h>
  44 #else
  45 #   include <fstream>
  46 #endif
  47
  48 #if !defined(MLE_INDEX)
  49 #define MLE_INDEX  0
  50 #define MLE_RGB    1
  51 #endif
  52
  53
  54 // ----------------------------------------------------------------------------
  55 // event tables and other macros
  56 // ----------------------------------------------------------------------------
  57
  58 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxTextCtrlBase)
  59
  60 BEGIN_EVENT_TABLE(wxTextCtrl, wxTextCtrlBase)
  61     EVT_CHAR(wxTextCtrl::OnChar)
  62     EVT_DROP_FILES(wxTextCtrl::OnDropFiles)
  63
  64     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
  65     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
  66     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
  67     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
  68     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
  69
  70     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
  71     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
  72     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
  73     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
  74     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
  75 END_EVENT_TABLE()
  76
  77
  78 // ============================================================================
  79 // implementation
  80 // ============================================================================
  81
  82 // ----------------------------------------------------------------------------
  83 // creation
  84 // ----------------------------------------------------------------------------
  85
  86 wxTextCtrl::wxTextCtrl()
  87 {
  88 }
  89
  90 wxTextCtrl::~wxTextCtrl()
  91 {
  92 }
  93
  94 bool wxTextCtrl::Create(
  95   wxWindow*                         pParent
  96 , wxWindowID                        vId
  97 , const wxString&                   rsValue
  98 , const wxPoint&                    rPos
  99 , const wxSize&                     rSize
 100 , long                              lStyle
 101 , const wxValidator&                rValidator
 102 , const wxString&                   rsName
 103 )
 104 {
 105     //
 106     // Base initialization
 107     //
 108     if ( !CreateBase( pParent
 109                      ,vId
 110                      ,rPos
 111                      ,rSize
 112                      ,lStyle
 113                      ,rValidator
 114                      ,rsName
 115                     ))
 116         return false;
 117
 118     wxPoint                         vPos = rPos; // The OS/2 position
 119     SWP                             vSwp;
 120
 121     if (pParent )
 122     {
 123         pParent->AddChild(this);
 124     }
 125
 126     m_windowStyle = lStyle;
 127     m_bIsMLE = false;
 128     m_bSkipUpdate = false;
 129
 130     long                            lSstyle = WS_VISIBLE | WS_TABSTOP;
 131
 132     //
 133     // Single and multiline edit fields are two different controls in PM
 134     //
 135     if ( m_windowStyle & wxTE_MULTILINE )
 136     {
 137         lSstyle |= MLS_BORDER | MLS_WORDWRAP;
 138         m_bIsMLE = true;
 139
 140         if ((m_windowStyle & wxTE_NO_VSCROLL) == 0)
 141             lSstyle |= MLS_VSCROLL;
 142         if (m_windowStyle & wxHSCROLL)
 143             lSstyle |= MLS_HSCROLL;
 144         if (m_windowStyle & wxTE_READONLY)
 145             lSstyle |= MLS_READONLY;
 146     }
 147     else
 148     {
 149         lSstyle |= ES_LEFT | ES_AUTOSCROLL | ES_MARGIN;
 150
 151         if (m_windowStyle & wxHSCROLL)
 152             lSstyle |=  ES_AUTOSCROLL;
 153         if (m_windowStyle & wxTE_READONLY)
 154             lSstyle |= ES_READONLY;
 155         if (m_windowStyle & wxTE_PASSWORD) // hidden input
 156             lSstyle |= ES_UNREADABLE;
 157     }
 158
 159     if (m_bIsMLE)
 160     {
 161         m_hWnd = (WXHWND)::WinCreateWindow( (HWND)GetHwndOf(pParent) // Parent window handle
 162                                            ,WC_MLE                   // Window class
 163                                            ,rsValue.c_str()     // Initial Text
 164                                            ,(ULONG)lSstyle           // Style flags
 165                                            ,(LONG)0                  // X pos of origin
 166                                            ,(LONG)0                  // Y pos of origin
 167                                            ,(LONG)0                  // field width
 168                                            ,(LONG)0                  // field height
 169                                            ,(HWND)GetHwndOf(pParent) // owner window handle (same as parent
 170                                            ,HWND_TOP                 // initial z position
 171                                            ,(ULONG)vId               // Window identifier
 172                                            ,NULL                     // no control data
 173                                            ,NULL                     // no Presentation parameters
 174                                           );
 175     }
 176     else
 177     {
 178         m_hWnd = (WXHWND)::WinCreateWindow( (HWND)GetHwndOf(pParent) // Parent window handle
 179                                            ,WC_ENTRYFIELD            // Window class
 180                                            ,rsValue.c_str()     // Initial Text
 181                                            ,(ULONG)lSstyle           // Style flags
 182                                            ,(LONG)0                  // X pos of origin
 183                                            ,(LONG)0                  // Y pos of origin
 184                                            ,(LONG)0                  // field width
 185                                            ,(LONG)0                  // field height
 186                                            ,(HWND)GetHwndOf(pParent) // owner window handle (same as parent
 187                                            ,HWND_TOP                 // initial z position
 188                                            ,(ULONG)vId               // Window identifier
 189                                            ,NULL                     // no control data
 190                                            ,NULL                     // no Presentation parameters
 191                                           );
 192     }
 193
 194     if (m_hWnd == 0)
 195     {
 196         return false;
 197     }
 198
 199     SubclassWin(GetHWND());
 200
 201     //
 202     // Set font, position, size and initial value
 203     //
 204     wxFont*                          pTextFont = new wxFont( 8
 205                                                             ,wxMODERN
 206                                                             ,wxNORMAL
 207                                                             ,wxNORMAL
 208                                                            );
 209     SetFont(*pTextFont);
 210     if (!rsValue.empty())
 211     {
 212         SetValue(rsValue);
 213     }
 214     SetupColours();
 215     //
 216     // If X and/or Y are not zero the difference is the compensation value
 217     // for margins for OS/2 controls.
 218     //
 219     ::WinQueryWindowPos(m_hWnd, &vSwp);
 220     SetXComp(vSwp.x);
 221     SetYComp(vSwp.y);
 222     SetSize( vPos.x - GetXComp()
 223             ,vPos.y - GetYComp()
 224             ,rSize.x
 225             ,rSize.y
 226            );
 227     delete pTextFont;
 228     return true;
 229 } // end of wxTextCtrl::Create
 230
 231 //
 232 // Make sure the window style (etc.) reflects the HWND style (roughly)
 233 //
 234 void wxTextCtrl::AdoptAttributesFromHWND()
 235 {
 236     HWND                            hWnd = GetHwnd();
 237     LONG                            lStyle = ::WinQueryWindowULong(hWnd, QWL_STYLE);
 238
 239     wxWindow::AdoptAttributesFromHWND();
 240
 241     if (m_bIsMLE)
 242     {
 243         m_windowStyle |= wxTE_MULTILINE;
 244         if (lStyle & MLS_READONLY)
 245             m_windowStyle |= wxTE_READONLY;
 246     }
 247     else
 248     {
 249         if (lStyle & ES_UNREADABLE)
 250             m_windowStyle |= wxTE_PASSWORD;
 251         if (lStyle & ES_READONLY)
 252             m_windowStyle |= wxTE_READONLY;
 253     }
 254 } // end of wxTextCtrl::AdoptAttributesFromHWND
 255
 256 WXDWORD wxTextCtrl::OS2GetStyle(
 257   long                              lStyle
 258 , WXDWORD*                          pdwExstyle
 259 ) const
 260 {
 261     //
 262     // Default border for the text controls is the sunken one
 263     //
 264     if ((lStyle & wxBORDER_MASK) == wxBORDER_DEFAULT )
 265     {
 266         lStyle |= wxBORDER_SUNKEN;
 267     }
 268
 269     long                            dwStyle = wxControl::OS2GetStyle( lStyle
 270                                                                      ,pdwExstyle
 271                                                                     );
 272
 273     dwStyle = WS_VISIBLE | WS_TABSTOP;
 274
 275     //
 276     // Single and multiline edit fields are two different controls in PM
 277     //
 278     if ( m_windowStyle & wxTE_MULTILINE )
 279     {
 280         dwStyle |= MLS_BORDER | MLS_WORDWRAP;
 281         if ((m_windowStyle & wxTE_NO_VSCROLL) == 0)
 282             dwStyle |= MLS_VSCROLL;
 283         if (m_windowStyle & wxHSCROLL)
 284             dwStyle |= MLS_HSCROLL;
 285         if (m_windowStyle & wxTE_READONLY)
 286             dwStyle |= MLS_READONLY;
 287     }
 288     else
 289     {
 290         dwStyle |= ES_LEFT | ES_AUTOSCROLL | ES_MARGIN;
 291         if (m_windowStyle & wxHSCROLL)
 292             dwStyle |=  ES_AUTOSCROLL;
 293         if (m_windowStyle & wxTE_READONLY)
 294             dwStyle |= ES_READONLY;
 295         if (m_windowStyle & wxTE_PASSWORD) // hidden input
 296             dwStyle |= ES_UNREADABLE;
 297     }
 298     return dwStyle;
 299 } // end of wxTextCtrl::OS2GetStyle
 300
 301 void wxTextCtrl::SetWindowStyleFlag(
 302   long                              lStyle
 303 )
 304 {
 305     wxControl::SetWindowStyleFlag(lStyle);
 306 } // end of wxTextCtrl::SetWindowStyleFlag
 307
 308 void wxTextCtrl::SetupColours()
 309 {
 310     wxColour                        vBkgndColour;
 311
 312     vBkgndColour = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
 313     SetBackgroundColour(vBkgndColour);
 314     SetForegroundColour(GetParent()->GetForegroundColour());
 315     if (m_bIsMLE)
 316     {
 317         ::WinSendMsg( GetHwnd()
 318                      ,MLM_SETTEXTCOLOR
 319                      ,(MPARAM)GetParent()->GetForegroundColour().GetPixel()
 320                      ,(MPARAM)MLE_RGB
 321                     );
 322     }
 323 } // end of wxTextCtrl::SetupColours
 324
 325 // ----------------------------------------------------------------------------
 326 // set/get the controls text
 327 // ----------------------------------------------------------------------------
 328
 329 wxString wxTextCtrl::GetValue() const
 330 {
 331     wxString                        sStr = wxGetWindowText(GetHWND());
 332     wxCharBuffer                    buf(sStr.char_str());
 333     char*                           zStr = buf.data();
 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 zStr;
 346 } // end of wxTextCtrl::GetValue
 347
 348 void wxTextCtrl::DoSetValue(
 349   const wxString&                   rsValue,
 350   int flags
 351 )
 352 {
 353     //
 354     // If the text is long enough, it's faster to just set it instead of first
 355     // comparing it with the old one (chances are that it will be different
 356     // anyhow, this comparison is there to avoid flicker for small single-line
 357     // edit controls mostly)
 358     //
 359     if ((rsValue.length() > 0x400) || (rsValue != GetValue()))
 360     {
 361         if ( flags & SetValue_SendEvent )
 362             m_bSkipUpdate = true;
 363
 364         ::WinSetWindowText(GetHwnd(), rsValue.c_str());
 365         AdjustSpaceLimit();
 366     }
 367 } // end of wxTextCtrl::SetValue
 368
 369 void wxTextCtrl::WriteText(
 370   const wxString&                   rsValue
 371 )
 372 {
 373     if (m_bIsMLE)
 374         ::WinSendMsg(GetHwnd(), MLM_INSERT, MPARAM(rsValue.wx_str()), MPARAM(0));
 375     else
 376         ::WinSetWindowText(GetHwnd(), rsValue.c_str());
 377     AdjustSpaceLimit();
 378 } // end of wxTextCtrl::WriteText
 379
 380 void wxTextCtrl::AppendText(
 381   const wxString&                   rsText
 382 )
 383 {
 384     SetInsertionPointEnd();
 385     WriteText(rsText);
 386 } // end of wxTextCtrl::AppendText
 387
 388 void wxTextCtrl::Clear()
 389 {
 390     ::WinSetWindowText(GetHwnd(), "");
 391 } // end of wxTextCtrl::Clear
 392
 393 bool wxTextCtrl::EmulateKeyPress(
 394   const wxKeyEvent&                 rEvent
 395 )
 396 {
 397     SetFocus();
 398     return(wxTextCtrlBase::EmulateKeyPress(rEvent));
 399 } // end of wxTextCtrl::EmulateKeyPress
 400
 401 // ----------------------------------------------------------------------------
 402 // Clipboard operations
 403 // ----------------------------------------------------------------------------
 404
 405 void wxTextCtrl::Copy()
 406 {
 407     if (CanCopy())
 408     {
 409         HWND hWnd = GetHwnd();
 410         if (m_bIsMLE)
 411             ::WinSendMsg(hWnd, MLM_COPY, 0, 0);
 412         else
 413             ::WinSendMsg(hWnd, EM_COPY, 0, 0);
 414     }
 415 } // end of wxTextCtrl::Copy
 416
 417 void wxTextCtrl::Cut()
 418 {
 419     if (CanCut())
 420     {
 421         HWND hWnd = GetHwnd();
 422
 423         if (m_bIsMLE)
 424             ::WinSendMsg(hWnd, MLM_CUT, 0, 0);
 425         else
 426             ::WinSendMsg(hWnd, EM_CUT, 0, 0);
 427     }
 428 } // end of wxTextCtrl::Cut
 429
 430 void wxTextCtrl::Paste()
 431 {
 432     if (CanPaste())
 433     {
 434         HWND                        hWnd = GetHwnd();
 435
 436         ::WinSendMsg(hWnd, EM_PASTE, 0, 0);
 437     }
 438 } // end of wxTextCtrl::Paste
 439
 440 bool wxTextCtrl::CanCopy() const
 441 {
 442     //
 443     // Can copy if there's a selection
 444     //
 445     long                            lFrom = 0L;
 446     long                            lTo = 0L;
 447
 448     GetSelection(&lFrom, &lTo);
 449     return (lFrom != lTo);
 450 } // end of wxTextCtrl::CanCopy
 451
 452 bool wxTextCtrl::CanCut() const
 453 {
 454     //
 455     // Can cut if there's a selection
 456     //
 457     long                            lFrom = 0L;
 458     long                            lTo = 0L;
 459
 460     GetSelection(&lFrom, &lTo);
 461     return (lFrom != lTo);
 462 } // end of wxTextCtrl::CanCut
 463
 464 bool wxTextCtrl::CanPaste() const
 465 {
 466     bool                            bIsTextAvailable = false;
 467
 468     if (!IsEditable())
 469         return false;
 470
 471     //
 472     // Check for straight text on clipboard
 473     //
 474     if (::WinOpenClipbrd(vHabmain))
 475     {
 476         bIsTextAvailable = (::WinQueryClipbrdData(vHabmain, CF_TEXT) != 0);
 477         ::WinCloseClipbrd(vHabmain);
 478     }
 479     return bIsTextAvailable;
 480 } // end of wxTextCtrl::CanPaste
 481
 482 // ----------------------------------------------------------------------------
 483 // Accessors
 484 // ----------------------------------------------------------------------------
 485
 486 void wxTextCtrl::SetEditable(
 487   bool                              bEditable
 488 )
 489 {
 490     HWND                            hWnd = GetHwnd();
 491
 492     if (m_bIsMLE)
 493         ::WinSendMsg(hWnd, MLM_SETREADONLY, MPFROMLONG(!bEditable), (MPARAM)0);
 494     else
 495         ::WinSendMsg(hWnd, EM_SETREADONLY, MPFROMLONG(!bEditable), (MPARAM)0);
 496 } // end of wxTextCtrl::SetEditable
 497
 498 void wxTextCtrl::SetInsertionPoint(
 499   long                              lPos
 500 )
 501 {
 502     HWND                            hWnd = GetHwnd();
 503
 504     if (m_bIsMLE)
 505         ::WinSendMsg(hWnd, MLM_SETSEL, (MPARAM)lPos, (MPARAM)lPos);
 506     else
 507         ::WinSendMsg(hWnd, EM_SETSEL, MPFROM2SHORT((USHORT)lPos, (USHORT)lPos), (MPARAM)0);
 508 } // end of wxTextCtrl::SetInsertionPoint
 509
 510 void wxTextCtrl::SetInsertionPointEnd()
 511 {
 512     wxTextPos                       lPos = GetLastPosition();
 513
 514     //
 515     // We must not do anything if the caret is already there because calling
 516     // SetInsertionPoint() thaws the controls if Freeze() had been called even
 517     // if it doesn't actually move the caret anywhere and so the simple fact of
 518     // doing it results in horrible flicker when appending big amounts of text
 519     // to the control in a few chunks (see DoAddText() test in the text sample)
 520     //
 521     if (GetInsertionPoint() == GetLastPosition())
 522         return;
 523     SetInsertionPoint(lPos);
 524 } // end of wxTextCtrl::SetInsertionPointEnd
 525
 526 long wxTextCtrl::GetInsertionPoint() const
 527 {
 528     WXDWORD                         dwPos = 0L;
 529
 530     if (m_bIsMLE)
 531         dwPos = (WXDWORD)::WinSendMsg(GetHwnd(), MLM_QUERYSEL, (MPARAM)MLFQS_MINSEL, 0);
 532     else
 533     {
 534         dwPos = (WXDWORD)::WinSendMsg(GetHwnd(), EM_QUERYSEL, 0, 0);
 535         dwPos = SHORT1FROMMP((MPARAM)dwPos);  // the first 16 bit value is the min pos
 536     }
 537     return (dwPos & 0xFFFF);
 538 } // end of wxTextCtrl::GetInsertionPoint
 539
 540 wxTextPos wxTextCtrl::GetLastPosition() const
 541 {
 542     HWND                            hWnd = GetHwnd();
 543     long                            lCharIndex;
 544     long                            lLineLength;
 545
 546     if (m_bIsMLE)
 547     {
 548         lCharIndex = 0;
 549
 550         //
 551         // This just gets the total text length.  The last will be this value
 552         //
 553         lLineLength = (long)::WinSendMsg(hWnd, MLM_QUERYTEXTLENGTH, 0, 0);
 554     }
 555     else
 556     {
 557         WNDPARAMS                   vParams;
 558
 559         lCharIndex = 0;
 560         vParams.fsStatus = WPM_CCHTEXT;
 561         if (::WinSendMsg( GetHwnd()
 562                          ,WM_QUERYWINDOWPARAMS
 563                          ,&vParams
 564                          ,0
 565                         ))
 566         {
 567             lLineLength = (long)vParams.cchText;
 568         }
 569         else
 570             lLineLength = 0;
 571     }
 572     return(lCharIndex + lLineLength);
 573 } // end of wxTextCtrl::GetLastPosition
 574
 575 // If the return values from and to are the same, there is no
 576 // selection.
 577 void wxTextCtrl::GetSelection(
 578   long*                             plFrom
 579 , long*                             plTo
 580 ) const
 581 {
 582     WXDWORD                         dwPos;
 583
 584     if (m_bIsMLE)
 585         dwPos = (WXDWORD)::WinSendMsg(GetHwnd(), MLM_QUERYSEL, (MPARAM)MLFQS_MINSEL, 0);
 586     else
 587     {
 588         dwPos = (WXDWORD)::WinSendMsg(GetHwnd(), EM_QUERYSEL, 0, 0);
 589     }
 590     *plFrom = SHORT1FROMMP((MPARAM)dwPos);  // the first 16 bit value is the min pos
 591     *plTo = SHORT2FROMMP((MPARAM)dwPos);  // the first 16 bit value is the min pos
 592 } // end of wxTextCtrl::GetSelection
 593
 594 bool wxTextCtrl::IsEditable() const
 595 {
 596     if (m_bIsMLE)
 597         return((bool)LONGFROMMR(::WinSendMsg(GetHwnd(), MLM_QUERYREADONLY, 0, 0)));
 598     else
 599         return((bool)LONGFROMMR(::WinSendMsg(GetHwnd(), EM_QUERYREADONLY, 0, 0)));
 600 } // end of wxTextCtrl::IsEditable
 601
 602 // ----------------------------------------------------------------------------
 603 // Editing
 604 // ----------------------------------------------------------------------------
 605
 606 void wxTextCtrl::Replace( long lFrom,
 607                           long lTo,
 608                           const wxString& rsValue )
 609 {
 610 #if wxUSE_CLIPBOARD
 611     HWND hWnd = GetHwnd();
 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     wxUnusedVar(lFrom);
 639     wxUnusedVar(lTo);
 640     wxUnusedVar(rsValue);
 641     wxFAIL_MSG("wxTextCtrl::Replace not implemented if wxUSE_CLIPBOARD is 0.");
 642 #endif
 643 }  // end of wxTextCtrl::Replace
 644
 645 void wxTextCtrl::Remove(
 646   long                              lFrom
 647 , long                              lTo
 648 )
 649 {
 650     HWND                            hWnd      = GetHwnd();
 651
 652     if (m_bIsMLE)
 653     {
 654         ::WinSendMsg(hWnd, MLM_SETSEL, MPFROM2SHORT((USHORT)lFrom, (USHORT)lTo), 0);
 655         ::WinSendMsg(hWnd, MLM_CUT, 0, 0);
 656     }
 657     else
 658     {
 659         ::WinSendMsg(hWnd, EM_SETSEL, MPFROM2SHORT((USHORT)lFrom, (USHORT)lTo), 0);
 660         ::WinSendMsg(hWnd, EM_CUT, 0, 0);
 661     }
 662 } // end of wxTextCtrl::Remove
 663
 664 void wxTextCtrl::SetSelection(
 665   long                              lFrom
 666 , long                              lTo
 667 )
 668 {
 669     HWND                            hWnd = GetHwnd();
 670     long                            lFromChar = lFrom;
 671     long                            lToChar = lTo;
 672
 673     //
 674     // If from and to are both -1, it means (in wxWidgets) that all text should
 675     // be selected. Translate into Windows convention
 676     //
 677     if ((lFrom == -1L) && (lTo == -1L))
 678     {
 679         lFromChar = 0L;
 680         lToChar   = -1L;
 681     }
 682     if (m_bIsMLE)
 683         ::WinSendMsg(hWnd, MLM_SETSEL, (MPARAM)lFromChar, (MPARAM)lToChar);
 684     else
 685         ::WinSendMsg(hWnd, EM_SETSEL, MPFROM2SHORT((USHORT)lFromChar, (USHORT)lToChar), (MPARAM)0);
 686 } // end of wxTextCtrl::SetSelection
 687
 688 bool wxTextCtrl::DoLoadFile(
 689   const wxString&                   rsFile,
 690   int                               fileType
 691 )
 692 {
 693     if ( wxTextCtrlBase::DoLoadFile(rsFile, fileType) )
 694     {
 695         //
 696         // Update the size limit if needed
 697         //
 698         AdjustSpaceLimit();
 699         return true;
 700     }
 701     return false;
 702 } // end of wxTextCtrl::DoLoadFile
 703
 704 bool wxTextCtrl::IsModified() const
 705 {
 706     bool                            bRc;
 707
 708     if (m_bIsMLE)
 709         bRc = (bool)LONGFROMMR(::WinSendMsg(GetHwnd(), MLM_QUERYCHANGED, 0, 0));
 710     else
 711         bRc = (bool)LONGFROMMR(::WinSendMsg(GetHwnd(), EM_QUERYCHANGED, 0, 0));
 712     return bRc;
 713 } // end of wxTextCtrl::IsModified
 714
 715 void wxTextCtrl::MarkDirty()
 716 {
 717     if (m_bIsMLE)
 718         ::WinSendMsg(GetHwnd(), MLM_SETCHANGED, MPFROMLONG(TRUE), 0);
 719     else
 720         // EM controls do not have a SETCHANGED, what can we do??
 721         wxFAIL_MSG( wxT("not implemented") );
 722 }
 723
 724 //
 725 // Makes 'unmodified'
 726 //
 727 void wxTextCtrl::DiscardEdits()
 728 {
 729     if (m_bIsMLE)
 730         ::WinSendMsg(GetHwnd(), MLM_SETCHANGED, MPFROMLONG(FALSE), 0);
 731     else
 732         //
 733         // EM controls do not have a SETCHANGED but issuing a query should reset it
 734         //
 735         ::WinSendMsg(GetHwnd(), EM_QUERYCHANGED, 0, 0);
 736 } // end of wxTextCtrl::DiscardEdits
 737
 738 int wxTextCtrl::GetNumberOfLines() const
 739 {
 740     int                             nNumLines;
 741
 742     if (m_bIsMLE)
 743         nNumLines = (int)::WinSendMsg(GetHwnd(), MLM_QUERYLINECOUNT, 0, 0);
 744     else
 745         nNumLines = 1;
 746     return nNumLines;
 747 } // end of wxTextCtrl::GetNumberOfLines
 748
 749 long wxTextCtrl::XYToPosition(
 750   long                              lX
 751 , long                              lY
 752 ) const
 753 {
 754     long                            lCharIndex = 0L;
 755     long                            lLen;
 756
 757     if (m_bIsMLE)
 758     {
 759         lLen = (long)::WinSendMsg(GetHwnd(), MLM_QUERYLINELENGTH, 0, 0);
 760         lCharIndex = ((lLen * lY) + lX);
 761     }
 762     else
 763         lCharIndex = lX;
 764     return lCharIndex;
 765 } // end of wxTextCtrl::XYToPosition
 766
 767 bool wxTextCtrl::PositionToXY(
 768   long                              lPos
 769 , long*                             plX
 770 , long*                             plY
 771 ) const
 772 {
 773     HWND                            hWnd = GetHwnd();
 774     long                            nLineNo = -1;
 775     long                            lCharIndex = 0;
 776
 777     if (m_bIsMLE)
 778         nLineNo = (long)::WinSendMsg(hWnd, MLM_LINEFROMCHAR, (MPARAM)lPos, 0);
 779     else
 780         nLineNo = 0;
 781
 782     if (nLineNo == -1)
 783     {
 784         // no such line
 785         return false;
 786     }
 787
 788     //
 789     // This gets the char index for the _beginning_ of this line
 790     //
 791     long                            lLineWidth;
 792
 793     if (m_bIsMLE)
 794     {
 795         lLineWidth = (long)::WinSendMsg(hWnd, MLM_QUERYLINELENGTH, (MPARAM)0, (MPARAM)0);
 796         lCharIndex = (nLineNo + 1) * lLineWidth;
 797     }
 798     else
 799     {
 800         WNDPARAMS                   vParams;
 801
 802         vParams.fsStatus = WPM_CCHTEXT;
 803         if (::WinSendMsg( hWnd
 804                          ,WM_QUERYWINDOWPARAMS
 805                          ,&vParams
 806                          ,0
 807                         ))
 808         {
 809             lCharIndex = vParams.cchText;
 810         }
 811         else
 812             lCharIndex = 32;
 813     }
 814
 815     if (lCharIndex == -1)
 816     {
 817         return false;
 818     }
 819
 820     //
 821     // The X position must therefore be the difference between pos and charIndex
 822     //
 823     if (plX)
 824         *plX = lPos - lCharIndex;
 825     if (plY)
 826         *plY = nLineNo;
 827
 828     return true;
 829 } // end of wxTextCtrl::PositionToXY
 830
 831 void wxTextCtrl::ShowPosition( long WXUNUSED(lPos) )
 832 {
 833     HWND hWnd = GetHwnd();
 834     long lCurrentLineLineNo = 0L;
 835
 836     // To scroll to a position, we pass the number of lines and characters
 837     // to scroll *by*. This means that we need to:
 838     // (1) Find the line position of the current line.
 839     // (2) Find the line position of pos.
 840     // (3) Scroll by (pos - current).
 841     // For now, ignore the horizontal scrolling.
 842
 843     //
 844     // Is this where scrolling is relative to - the line containing the caret?
 845     // Or is the first visible line??? Try first visible line.
 846     //
 847     if (m_bIsMLE)
 848     {
 849         //
 850         // In PM this is the actual char position
 851         //
 852         lCurrentLineLineNo = (long)::WinSendMsg(hWnd, MLM_QUERYFIRSTCHAR, (MPARAM)0, (MPARAM)0);
 853
 854         //
 855         // This will cause a scroll to the selected position
 856         //
 857         ::WinSendMsg(hWnd, MLM_SETSEL, (MPARAM)lCurrentLineLineNo, (MPARAM)lCurrentLineLineNo);
 858     }
 859 } // end of wxTextCtrl::ShowPosition
 860
 861 int wxTextCtrl::GetLineLength( long WXUNUSED(lLineNo) ) const
 862 {
 863     long lLen = 0L;
 864
 865     if (m_bIsMLE)
 866     {
 867         lLen = (long)::WinSendMsg(GetHwnd(), MLM_QUERYLINELENGTH, 0, 0);
 868     }
 869     else
 870     {
 871         WNDPARAMS vParams;
 872
 873         vParams.fsStatus = WPM_CCHTEXT;
 874         if (::WinSendMsg( GetHwnd()
 875                          ,WM_QUERYWINDOWPARAMS
 876                          ,&vParams
 877                          ,0
 878                         ))
 879         {
 880             lLen = vParams.cchText;
 881         }
 882         else
 883             lLen = 32;
 884     }
 885     return lLen;
 886 } // end ofwxTextCtrl::GetLineLength
 887
 888 wxString wxTextCtrl::GetLineText(
 889   long                              lLineNo
 890 ) const
 891 {
 892     long                            lLen = (long)GetLineLength((long)lLineNo) + 1;
 893     wxString                        sStr;
 894     wxChar*                         zBuf;
 895
 896     //
 897     // There must be at least enough place for the length WORD in the
 898     // buffer
 899     //
 900     lLen += sizeof(WORD);
 901     zBuf = new wxChar[lLen];
 902     if (m_bIsMLE)
 903     {
 904         long                        lIndex;
 905         long                        lBuflen;
 906         long                        lCopied;
 907
 908         lLen = (long)::WinSendMsg(GetHwnd(), MLM_QUERYLINELENGTH, 0, 0);
 909         lIndex = lLen * lLineNo;
 910
 911         ::WinSendMsg(GetHwnd(), MLM_SETSEL, (MPARAM)lIndex, (MPARAM)lIndex);
 912         ::WinSendMsg(GetHwnd(), MLM_SETIMPORTEXPORT, MPFROMP(zBuf), MPFROMSHORT((USHORT)WXSIZEOF(zBuf)));
 913         lBuflen = (long)::WinSendMsg(GetHwnd(), MLM_QUERYFORMATTEXTLENGTH, MPFROMLONG(lIndex), MPFROMLONG(-1));
 914         lCopied = (long)::WinSendMsg(GetHwnd(), MLM_EXPORT, MPFROMP(&lIndex), MPFROMP(&lBuflen));
 915         zBuf[lCopied] = '\0';
 916     }
 917     else
 918     {
 919         WNDPARAMS                   vParams;
 920
 921         vParams.fsStatus = WPM_CCHTEXT;
 922         if (::WinSendMsg( GetHwnd()
 923                          ,WM_QUERYWINDOWPARAMS
 924                          ,&vParams
 925                          ,0
 926                         ))
 927          memcpy((char*)zBuf, vParams.pszText, vParams.cchText);
 928          zBuf[vParams.cchText] = '\0';
 929      }
 930      sStr = zBuf;
 931      delete [] zBuf;
 932      return sStr;
 933 } // end of wxTextCtrl::GetLineText
 934
 935 // ----------------------------------------------------------------------------
 936 // Undo/redo
 937 // ----------------------------------------------------------------------------
 938
 939 void wxTextCtrl::Undo()
 940 {
 941     if (CanUndo())
 942     {
 943         if (m_bIsMLE)
 944             ::WinSendMsg(GetHwnd(), MLM_UNDO, 0, 0);
 945         // Simple entryfields cannot be undone
 946     }
 947 } // end of wxTextCtrl::Undo
 948
 949 void wxTextCtrl::Redo()
 950 {
 951     if (CanRedo())
 952     {
 953         if (m_bIsMLE)
 954             ::WinSendMsg(GetHwnd(), MLM_UNDO, 0, 0);
 955         // Simple entryfields cannot be undone
 956     }
 957 } // end of wxTextCtrl::Redo
 958
 959 bool wxTextCtrl::CanUndo() const
 960 {
 961     bool                            bOk;
 962
 963     if (m_bIsMLE)
 964         bOk = (::WinSendMsg(GetHwnd(), MLM_QUERYUNDO, 0, 0) != 0);
 965     else
 966         bOk = false; // can't undo regular edit fields in PM
 967     return bOk;
 968 } // end of wxTextCtrl::CanUndo
 969
 970 bool wxTextCtrl::CanRedo() const
 971 {
 972     bool                            bOk;
 973
 974     if (m_bIsMLE)
 975         bOk = (::WinSendMsg(GetHwnd(), MLM_QUERYUNDO, 0, 0) != 0);
 976     else
 977         bOk = false; // can't undo regular edit fields in PM
 978     return bOk;
 979 } // end of wxTextCtrl::CanRedo
 980
 981 // ----------------------------------------------------------------------------
 982 // implemenation details
 983 // ----------------------------------------------------------------------------
 984
 985 void wxTextCtrl::Command(
 986   wxCommandEvent&                   rEvent
 987 )
 988 {
 989     SetValue(rEvent.GetString());
 990     ProcessCommand (rEvent);
 991 } // end of wxTextCtrl::Command
 992
 993 void wxTextCtrl::OnDropFiles(
 994   wxDropFilesEvent&                 rEvent
 995 )
 996 {
 997     // By default, load the first file into the text window.
 998     if (rEvent.GetNumberOfFiles() > 0)
 999     {
1000         LoadFile(rEvent.GetFiles()[0]);
1001     }
1002 } // end of wxTextCtrl::OnDropFiles
1003
1004 WXHBRUSH wxTextCtrl::OnCtlColor( WXHDC    hWxDC,
1005                                  WXHWND   WXUNUSED(hWnd),
1006                                  WXUINT   WXUNUSED(uCtlColor),
1007                                  WXUINT   WXUNUSED(uMessage),
1008                                  WXWPARAM WXUNUSED(wParam),
1009                                  WXLPARAM WXUNUSED(lParam) )
1010 {
1011     HPS      hPS = (HPS)hWxDC;
1012     wxColour vColBack = GetBackgroundColour();
1013     wxColour vColFore = GetForegroundColour();
1014     wxBrush* pBackgroundBrush = wxTheBrushList->FindOrCreateBrush( vColBack, wxSOLID );
1015
1016     if (m_bUseCtl3D)
1017     {
1018         HBRUSH                      hBrush = NULLHANDLE;
1019
1020         return hBrush;
1021     }
1022     if (GetParent()->GetTransparentBackground())
1023         ::GpiSetBackMix(hPS, BM_LEAVEALONE);
1024     else
1025         ::GpiSetBackMix(hPS, BM_OVERPAINT);
1026     if (!IsEnabled() && (GetWindowStyle() & wxTE_MULTILINE) == 0)
1027         vColBack = wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE);
1028     ::GpiSetBackColor(hPS, vColBack.GetPixel());
1029     ::GpiSetColor(hPS, vColFore.GetPixel());
1030     return (WXHBRUSH)pBackgroundBrush->GetResourceHandle();
1031 } // end of wxTextCtrl::OnCtlColor
1032
1033 bool wxTextCtrl::OS2ShouldPreProcessMessage(
1034   WXMSG*                            pMsg
1035 )
1036 {
1037     return wxControl::OS2ShouldPreProcessMessage(pMsg);
1038 } // end of wxTextCtrl::OS2ShouldPreProcessMessage
1039
1040 void wxTextCtrl::OnChar(
1041   wxKeyEvent&                       rEvent
1042 )
1043 {
1044     switch (rEvent.GetKeyCode())
1045     {
1046         case WXK_RETURN:
1047             if ( !(m_windowStyle & wxTE_MULTILINE) )
1048             {
1049                 wxCommandEvent      vEvent(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1050
1051                 vEvent.SetEventObject(this);
1052                 if ( HandleWindowEvent(vEvent))
1053                     return;
1054             }
1055             //else: multiline controls need Enter for themselves
1056
1057             break;
1058
1059         case WXK_TAB:
1060             // always produce navigation event - even if we process TAB
1061             // ourselves the fact that we got here means that the user code
1062             // decided to skip processing of this TAB - probably to let it
1063             // do its default job.
1064             //
1065             // NB: Notice that Ctrl-Tab is handled elsewhere and Alt-Tab is
1066             //     handled by Windows
1067             {
1068                 wxNavigationKeyEvent    vEventNav;
1069
1070                 vEventNav.SetDirection(!rEvent.ShiftDown());
1071                 vEventNav.SetWindowChange(false);
1072                 vEventNav.SetEventObject(this);
1073
1074                 if ( HandleWindowEvent(vEventNav) )
1075                     return;
1076             }
1077             break;
1078     }
1079     rEvent.Skip();
1080 } // end of wxTextCtrl::OnChar
1081
1082 bool wxTextCtrl::OS2Command(
1083   WXUINT                            uParam
1084 , WXWORD                            WXUNUSED(vId)
1085 )
1086 {
1087     switch (uParam)
1088     {
1089         case EN_SETFOCUS:
1090         case EN_KILLFOCUS:
1091             {
1092                 wxFocusEvent        vEvent( uParam == EN_KILLFOCUS ? wxEVT_KILL_FOCUS
1093                                                                    : wxEVT_SET_FOCUS
1094                                            ,m_windowId
1095                                           );
1096
1097                 vEvent.SetEventObject(this);
1098                 HandleWindowEvent(vEvent);
1099             }
1100             break;
1101
1102         case EN_CHANGE:
1103             {
1104                 if (m_bSkipUpdate)
1105                 {
1106                     m_bSkipUpdate = false;
1107                     break;
1108                 }
1109
1110                 wxCommandEvent      vEvent( wxEVT_COMMAND_TEXT_UPDATED
1111                                            ,m_windowId
1112                                           );
1113
1114                 InitCommandEvent(vEvent);
1115                 ProcessCommand(vEvent);
1116             }
1117             break;
1118
1119         case EN_OVERFLOW:
1120             //
1121             // The text size limit has been hit - increase it
1122             //
1123             AdjustSpaceLimit();
1124             break;
1125
1126         case EN_SCROLL:
1127         case EN_INSERTMODETOGGLE:
1128         case EN_MEMERROR:
1129             return false;
1130         default:
1131             return false;
1132     }
1133
1134     //
1135     // Processed
1136     //
1137     return true;
1138 } // end of wxTextCtrl::OS2Command
1139
1140 void wxTextCtrl::AdjustSpaceLimit()
1141 {
1142     unsigned int                    uLen = 0;
1143     unsigned int                    uLimit = 0;
1144
1145     uLen   = ::WinQueryWindowTextLength(GetHwnd());
1146     if (m_bIsMLE)
1147     {
1148         uLimit = (unsigned int)::WinSendMsg( GetHwnd()
1149                                             ,MLM_QUERYTEXTLIMIT
1150                                             ,0
1151                                             ,0
1152                                            );
1153     }
1154     else
1155     {
1156         ENTRYFDATA                  Efd;
1157         WNDPARAMS                   vParams;
1158
1159         vParams.fsStatus = WPM_CBCTLDATA;
1160         vParams.pCtlData = &Efd;
1161         vParams.cbCtlData = sizeof(ENTRYFDATA);
1162
1163         if (::WinSendMsg( GetHwnd()
1164                          ,WM_QUERYWINDOWPARAMS
1165                          ,&vParams
1166                          ,0
1167                         ))
1168             uLimit = (unsigned int)Efd.cchEditLimit;
1169         else
1170             uLimit = 32; //PM's default
1171     }
1172     if (uLen >= uLimit)
1173     {
1174         if (m_bIsMLE)
1175         {
1176             uLimit = uLen + 0x8000;    // 32Kb
1177             if (uLimit > 0xffff)
1178             {
1179                 uLimit = 0L;
1180             }
1181         }
1182         else
1183             uLimit = 0x7fff;
1184
1185         if (m_bIsMLE)
1186             ::WinSendMsg(GetHwnd(), MLM_SETTEXTLIMIT, MPFROMLONG(uLimit), 0);
1187         else
1188             ::WinSendMsg(GetHwnd(), EM_SETTEXTLIMIT, MPFROMSHORT(uLimit), 0);
1189     }
1190 } // end of wxTextCtrl::AdjustSpaceLimit
1191
1192 bool wxTextCtrl::AcceptsFocus() const
1193 {
1194     //
1195     // We don't want focus if we can't be edited unless we're a multiline
1196     // control because then it might be still nice to get focus from keyboard
1197     // to be able to scroll it without mouse
1198     //
1199     return (IsEditable() || IsMultiLine()) && wxControl::AcceptsFocus();
1200 } // end of wxTextCtrl::Command
1201
1202 wxSize wxTextCtrl::DoGetBestSize() const
1203 {
1204     int                             nCx;
1205     int                             nCy;
1206     wxFont                          vFont = (wxFont)GetFont();
1207
1208     wxGetCharSize(GetHWND(), &nCx, &nCy, &vFont);
1209
1210     int                             wText = DEFAULT_ITEM_WIDTH;
1211     int                             hText = (int)(EDIT_HEIGHT_FROM_CHAR_HEIGHT(nCy) * .8);
1212
1213     if (m_windowStyle & wxTE_MULTILINE)
1214     {
1215         hText *= wxMax(GetNumberOfLines(), 5);
1216     }
1217     //else: for single line control everything is ok
1218     return wxSize(wText, hText);
1219 } // end of wxTextCtrl::DoGetBestSize
1220
1221 // ----------------------------------------------------------------------------
1222 // standard handlers for standard edit menu events
1223 // ----------------------------------------------------------------------------
1224
1225 void wxTextCtrl::OnCut( wxCommandEvent& WXUNUSED(rEvent) )
1226 {
1227     Cut();
1228 } // end of wxTextCtrl::OnCut
1229
1230 void wxTextCtrl::OnCopy( wxCommandEvent& WXUNUSED(rEvent) )
1231 {
1232     Copy();
1233 } // end of wxTextCtrl::OnCopy
1234
1235 void wxTextCtrl::OnPaste( wxCommandEvent& WXUNUSED(rEvent) )
1236 {
1237     Paste();
1238 } // end of wxTextCtrl::OnPaste
1239
1240 void wxTextCtrl::OnUndo( wxCommandEvent& WXUNUSED(rEvent) )
1241 {
1242     Undo();
1243 } // end of wxTextCtrl::OnUndo
1244
1245 void wxTextCtrl::OnRedo( wxCommandEvent& WXUNUSED(rEvent) )
1246 {
1247     Redo();
1248 } // end of wxTextCtrl::OnRedo
1249
1250 void wxTextCtrl::OnDelete( wxCommandEvent& WXUNUSED(rEvent) )
1251 {
1252     long lFrom, lTo;
1253
1254     GetSelection( &lFrom, &lTo );
1255
1256     if (lFrom != -1 && lTo != -1)
1257         Remove( lFrom, lTo );
1258 } // end of wxTextCtrl::OnDelete
1259
1260 void wxTextCtrl::OnSelectAll( wxCommandEvent& WXUNUSED(rEvent) )
1261 {
1262     SetSelection(-1, -1);
1263 } // end of wxTextCtrl::OnSelectAll
1264
1265 void wxTextCtrl::OnUpdateCut( wxUpdateUIEvent& rEvent )
1266 {
1267     rEvent.Enable(CanCut());
1268 } // end of wxTextCtrl::OnUpdateCut
1269
1270 void wxTextCtrl::OnUpdateCopy( wxUpdateUIEvent& rEvent )
1271 {
1272     rEvent.Enable(CanCopy());
1273 } // end of wxTextCtrl::OnUpdateCopy
1274
1275 void wxTextCtrl::OnUpdatePaste( wxUpdateUIEvent& rEvent )
1276 {
1277     rEvent.Enable(CanPaste());
1278 } // end of wxTextCtrl::OnUpdatePaste
1279
1280 void wxTextCtrl::OnUpdateUndo( wxUpdateUIEvent& rEvent )
1281 {
1282     rEvent.Enable(CanUndo());
1283 } // end of wxTextCtrl::OnUpdateUndo
1284
1285 void wxTextCtrl::OnUpdateRedo( wxUpdateUIEvent& rEvent )
1286 {
1287     rEvent.Enable(CanRedo());
1288 } // end of wxTextCtrl::OnUpdateRedo
1289
1290 void wxTextCtrl::OnUpdateDelete( wxUpdateUIEvent& rEvent )
1291 {
1292     long lFrom, lTo;
1293
1294     GetSelection( &lFrom, &lTo );
1295     rEvent.Enable( lFrom != -1L && lTo != -1L && lFrom != lTo && IsEditable()) ;
1296 } // end of wxTextCtrl::OnUpdateDelete
1297
1298 void wxTextCtrl::OnUpdateSelectAll( wxUpdateUIEvent& rEvent )
1299 {
1300     rEvent.Enable(GetLastPosition() > 0);
1301 } // end of wxTextCtrl::OnUpdateSelectAll
1302
1303 bool wxTextCtrl::SetBackgroundColour( const wxColour& rColour )
1304 {
1305     if (m_bIsMLE)
1306         ::WinSendMsg(GetHwnd(), MLM_SETBACKCOLOR, (MPARAM)rColour.GetPixel(), MLE_INDEX);
1307     return true;
1308 } // end of wxTextCtrl::SetBackgroundColour
1309
1310 bool wxTextCtrl::SetForegroundColour( const wxColour& rColour )
1311 {
1312     if (m_bIsMLE)
1313         ::WinSendMsg(GetHwnd(), MLM_SETTEXTCOLOR, (MPARAM)rColour.GetPixel(), MLE_INDEX);
1314     return true;
1315 } // end of wxTextCtrl::SetForegroundColour
1316
1317 bool wxTextCtrl::SetStyle( long lStart,
1318                            long lEnd,
1319                            const wxTextAttr& WXUNUSED(rStyle) )
1320 {
1321     HWND hWnd = GetHwnd();
1322
1323     if (lStart > lEnd)
1324     {
1325         long lTmp = lStart;
1326
1327         lStart = lEnd;
1328         lEnd   = lTmp;
1329     }
1330
1331     //
1332     // We can only change the format of the selection, so select the range we
1333     // want and restore the old selection later
1334     //
1335     long lStartOld, lEndOld;
1336
1337     GetSelection( &lStartOld, &lEndOld );
1338
1339     //
1340     // But do we really have to change the selection?
1341     //
1342     bool bChangeSel = lStart != lStartOld ||
1343                       lEnd != lEndOld;
1344
1345     if (bChangeSel)
1346     {
1347         if (m_bIsMLE)
1348             ::WinSendMsg(hWnd, MLM_SETSEL, MPFROM2SHORT((USHORT)lStart, (USHORT)lEnd), 0);
1349         else
1350             ::WinSendMsg(hWnd, EM_SETSEL, MPFROM2SHORT((USHORT)lStart, (USHORT)lEnd), 0);
1351     }
1352
1353     //
1354     // TODO:: finish this part
1355     //
1356     return true;
1357 } // end of wxTextCtrl::SetStyle