src/msw/slider95.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/msw/slider.cpp
   3 // Purpose:     wxSlider, using the Win95 (and later) trackbar control
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart 1998
   9 //                  Vadim Zeitlin 2004
  10 // Licence:     wxWindows licence
  11 /////////////////////////////////////////////////////////////////////////////
  12
  13 // ============================================================================
  14 // declarations
  15 // ============================================================================
  16
  17 // ----------------------------------------------------------------------------
  18 // headers
  19 // ----------------------------------------------------------------------------
  20
  21 // For compilers that support precompilation, includes "wx.h".
  22 #include "wx/wxprec.h"
  23
  24 #ifdef __BORLANDC__
  25     #pragma hdrstop
  26 #endif
  27
  28 #if wxUSE_SLIDER
  29
  30 #include "wx/slider.h"
  31
  32 #ifndef WX_PRECOMP
  33     #include "wx/msw/wrapcctl.h" // include <commctrl.h> "properly"
  34     #include "wx/brush.h"
  35 #endif
  36
  37 #include "wx/msw/subwin.h"
  38
  39 // ----------------------------------------------------------------------------
  40 // constants
  41 // ----------------------------------------------------------------------------
  42
  43 // indices of labels in wxSlider::m_labels
  44 enum
  45 {
  46     SliderLabel_Min,
  47     SliderLabel_Max,
  48     SliderLabel_Value,
  49     SliderLabel_Last
  50 };
  51
  52 // the gap between the slider and the labels, in pixels
  53 static const int HGAP = 5;
  54
  55 // ----------------------------------------------------------------------------
  56 // XTI
  57 // ----------------------------------------------------------------------------
  58
  59 #if wxUSE_EXTENDED_RTTI
  60 WX_DEFINE_FLAGS( wxSliderStyle )
  61
  62 wxBEGIN_FLAGS( wxSliderStyle )
  63     // new style border flags, we put them first to
  64     // use them for streaming out
  65     wxFLAGS_MEMBER(wxBORDER_SIMPLE)
  66     wxFLAGS_MEMBER(wxBORDER_SUNKEN)
  67     wxFLAGS_MEMBER(wxBORDER_DOUBLE)
  68     wxFLAGS_MEMBER(wxBORDER_RAISED)
  69     wxFLAGS_MEMBER(wxBORDER_STATIC)
  70     wxFLAGS_MEMBER(wxBORDER_NONE)
  71
  72     // old style border flags
  73     wxFLAGS_MEMBER(wxSIMPLE_BORDER)
  74     wxFLAGS_MEMBER(wxSUNKEN_BORDER)
  75     wxFLAGS_MEMBER(wxDOUBLE_BORDER)
  76     wxFLAGS_MEMBER(wxRAISED_BORDER)
  77     wxFLAGS_MEMBER(wxSTATIC_BORDER)
  78     wxFLAGS_MEMBER(wxBORDER)
  79
  80     // standard window styles
  81     wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
  82     wxFLAGS_MEMBER(wxCLIP_CHILDREN)
  83     wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
  84     wxFLAGS_MEMBER(wxWANTS_CHARS)
  85     wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
  86     wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
  87     wxFLAGS_MEMBER(wxVSCROLL)
  88     wxFLAGS_MEMBER(wxHSCROLL)
  89
  90     wxFLAGS_MEMBER(wxSL_HORIZONTAL)
  91     wxFLAGS_MEMBER(wxSL_VERTICAL)
  92     wxFLAGS_MEMBER(wxSL_AUTOTICKS)
  93     wxFLAGS_MEMBER(wxSL_LABELS)
  94     wxFLAGS_MEMBER(wxSL_LEFT)
  95     wxFLAGS_MEMBER(wxSL_TOP)
  96     wxFLAGS_MEMBER(wxSL_RIGHT)
  97     wxFLAGS_MEMBER(wxSL_BOTTOM)
  98     wxFLAGS_MEMBER(wxSL_BOTH)
  99     wxFLAGS_MEMBER(wxSL_SELRANGE)
 100     wxFLAGS_MEMBER(wxSL_INVERSE)
 101
 102 wxEND_FLAGS( wxSliderStyle )
 103
 104 IMPLEMENT_DYNAMIC_CLASS_XTI(wxSlider, wxControl,"wx/slider.h")
 105
 106 wxBEGIN_PROPERTIES_TABLE(wxSlider)
 107     wxEVENT_RANGE_PROPERTY( Scroll , wxEVT_SCROLL_TOP , wxEVT_SCROLL_CHANGED , wxScrollEvent )
 108     wxEVENT_PROPERTY( Updated , wxEVT_COMMAND_SLIDER_UPDATED , wxCommandEvent )
 109
 110     wxPROPERTY( Value , int , SetValue, GetValue , 0, 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
 111     wxPROPERTY( Minimum , int , SetMin, GetMin, 0 , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
 112     wxPROPERTY( Maximum , int , SetMax, GetMax, 0 , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
 113     wxPROPERTY( PageSize , int , SetPageSize, GetLineSize, 1 , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
 114     wxPROPERTY( LineSize , int , SetLineSize, GetLineSize, 1 , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
 115     wxPROPERTY( ThumbLength , int , SetThumbLength, GetThumbLength, 1 , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
 116     wxPROPERTY_FLAGS( WindowStyle , wxSliderStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
 117 wxEND_PROPERTIES_TABLE()
 118
 119 wxBEGIN_HANDLERS_TABLE(wxSlider)
 120 wxEND_HANDLERS_TABLE()
 121
 122 wxCONSTRUCTOR_8( wxSlider , wxWindow* , Parent , wxWindowID , Id , int , Value , int , Minimum , int , Maximum , wxPoint , Position , wxSize , Size , long , WindowStyle )
 123 #else
 124 IMPLEMENT_DYNAMIC_CLASS(wxSlider, wxControl)
 125 #endif
 126
 127 // ============================================================================
 128 // wxSlider implementation
 129 // ============================================================================
 130
 131 // ----------------------------------------------------------------------------
 132 // construction
 133 // ----------------------------------------------------------------------------
 134
 135 void wxSlider::Init()
 136 {
 137     m_labels = NULL;
 138
 139     m_pageSize = 1;
 140     m_lineSize = 1;
 141     m_rangeMax = 0;
 142     m_rangeMin = 0;
 143     m_tickFreq = 0;
 144
 145     m_isDragging = false;
 146 }
 147
 148 bool
 149 wxSlider::Create(wxWindow *parent,
 150                  wxWindowID id,
 151                  int value,
 152                  int minValue,
 153                  int maxValue,
 154                  const wxPoint& pos,
 155                  const wxSize& size,
 156                  long style,
 157                  const wxValidator& validator,
 158                  const wxString& name)
 159 {
 160     // our styles are redundant: wxSL_LEFT/RIGHT imply wxSL_VERTICAL and
 161     // wxSL_TOP/BOTTOM imply wxSL_HORIZONTAL, but for backwards compatibility
 162     // reasons we can't really change it, instead try to infer the orientation
 163     // from the flags given to us here
 164     switch ( style & (wxSL_LEFT | wxSL_RIGHT | wxSL_TOP | wxSL_BOTTOM) )
 165     {
 166         case wxSL_LEFT:
 167         case wxSL_RIGHT:
 168             style |= wxSL_VERTICAL;
 169             break;
 170
 171         case wxSL_TOP:
 172         case wxSL_BOTTOM:
 173             style |= wxSL_HORIZONTAL;
 174             break;
 175
 176         case 0:
 177             // no specific direction, do we have at least the orientation?
 178             if ( !(style & (wxSL_HORIZONTAL | wxSL_VERTICAL)) )
 179             {
 180                 // no, choose default
 181                 style |= wxSL_BOTTOM | wxSL_HORIZONTAL;
 182             }
 183     };
 184
 185     wxASSERT_MSG( !(style & wxSL_VERTICAL) || !(style & wxSL_HORIZONTAL),
 186                     _T("incompatible slider direction and orientation") );
 187
 188
 189     // initialize everything
 190     if ( !CreateControl(parent, id, pos, size, style, validator, name) )
 191         return false;
 192
 193     // ensure that we have correct values for GetLabelsSize()
 194     m_rangeMin = minValue;
 195     m_rangeMax = maxValue;
 196
 197     // create the labels first, so that our DoGetBestSize() could take them
 198     // into account
 199     //
 200     // note that we could simply create 3 wxStaticTexts here but it could
 201     // result in some observable side effects at wx level (e.g. the parent of
 202     // wxSlider would have 3 more children than expected) and so we prefer not
 203     // to do it like this
 204     if ( m_windowStyle & wxSL_LABELS )
 205     {
 206         m_labels = new wxSubwindows(SliderLabel_Last);
 207
 208         HWND hwndParent = GetHwndOf(parent);
 209         for ( size_t n = 0; n < SliderLabel_Last; n++ )
 210         {
 211             (*m_labels)[n] = ::CreateWindow
 212                                (
 213                                     wxT("STATIC"),
 214                                     NULL,
 215                                     WS_CHILD | WS_VISIBLE | SS_CENTER,
 216                                     0, 0, 0, 0,
 217                                     hwndParent,
 218                                     (HMENU)NewControlId(),
 219                                     wxGetInstance(),
 220                                     NULL
 221                                );
 222         }
 223
 224         m_labels->SetFont(GetFont());
 225     }
 226
 227     // now create the main control too
 228     if ( !MSWCreateControl(TRACKBAR_CLASS, wxEmptyString, pos, size) )
 229         return false;
 230
 231     // and initialize everything
 232     SetRange(minValue, maxValue);
 233     SetValue(value);
 234     SetPageSize((maxValue - minValue)/10);
 235
 236     // we need to position the labels correctly if we have them and if
 237     // SetSize() hadn't been called before (when best size was determined by
 238     // MSWCreateControl()) as in this case they haven't been put in place yet
 239     if ( m_labels && size.x != wxDefaultCoord && size.y != wxDefaultCoord )
 240     {
 241         SetSize(size);
 242     }
 243
 244     return true;
 245 }
 246
 247 WXDWORD wxSlider::MSWGetStyle(long style, WXDWORD *exstyle) const
 248 {
 249     WXDWORD msStyle = wxControl::MSWGetStyle(style, exstyle);
 250
 251     // TBS_HORZ, TBS_RIGHT and TBS_BOTTOM are 0 but do include them for clarity
 252     msStyle |= style & wxSL_VERTICAL ? TBS_VERT : TBS_HORZ;
 253
 254     if ( style & wxSL_BOTH )
 255     {
 256         // this fully specifies the style combined with TBS_VERT/HORZ above
 257         msStyle |= TBS_BOTH;
 258     }
 259     else // choose one direction
 260     {
 261         if ( style & wxSL_LEFT )
 262             msStyle |= TBS_LEFT;
 263         else if ( style & wxSL_RIGHT )
 264             msStyle |= TBS_RIGHT;
 265         else if ( style & wxSL_TOP )
 266             msStyle |= TBS_TOP;
 267         else if ( style & wxSL_BOTTOM )
 268             msStyle |= TBS_BOTTOM;
 269     }
 270
 271     if ( style & wxSL_AUTOTICKS )
 272         msStyle |= TBS_AUTOTICKS;
 273     else
 274         msStyle |= TBS_NOTICKS;
 275
 276     if ( style & wxSL_SELRANGE )
 277         msStyle |= TBS_ENABLESELRANGE;
 278
 279     return msStyle;
 280 }
 281
 282 wxSlider::~wxSlider()
 283 {
 284     delete m_labels;
 285 }
 286
 287 // ----------------------------------------------------------------------------
 288 // event handling
 289 // ----------------------------------------------------------------------------
 290
 291 bool wxSlider::MSWOnScroll(int WXUNUSED(orientation),
 292                            WXWORD wParam,
 293                            WXWORD WXUNUSED(pos),
 294                            WXHWND control)
 295 {
 296     wxEventType scrollEvent;
 297     switch ( wParam )
 298     {
 299         case SB_TOP:
 300             scrollEvent = wxEVT_SCROLL_TOP;
 301             break;
 302
 303         case SB_BOTTOM:
 304             scrollEvent = wxEVT_SCROLL_BOTTOM;
 305             break;
 306
 307         case SB_LINEUP:
 308             scrollEvent = wxEVT_SCROLL_LINEUP;
 309             break;
 310
 311         case SB_LINEDOWN:
 312             scrollEvent = wxEVT_SCROLL_LINEDOWN;
 313             break;
 314
 315         case SB_PAGEUP:
 316             scrollEvent = wxEVT_SCROLL_PAGEUP;
 317             break;
 318
 319         case SB_PAGEDOWN:
 320             scrollEvent = wxEVT_SCROLL_PAGEDOWN;
 321             break;
 322
 323         case SB_THUMBTRACK:
 324             scrollEvent = wxEVT_SCROLL_THUMBTRACK;
 325             m_isDragging = true;
 326             break;
 327
 328         case SB_THUMBPOSITION:
 329             if ( m_isDragging )
 330             {
 331                 scrollEvent = wxEVT_SCROLL_THUMBRELEASE;
 332                 m_isDragging = false;
 333             }
 334             else
 335             {
 336                 // this seems to only happen when the mouse wheel is used: in
 337                 // this case, as it might be unexpected to get THUMBRELEASE
 338                 // without preceding THUMBTRACKs, we don't generate it at all
 339                 // but generate CHANGED event because the control itself does
 340                 // not send us SB_ENDSCROLL for whatever reason when mouse
 341                 // wheel is used
 342                 scrollEvent = wxEVT_SCROLL_CHANGED;
 343             }
 344             break;
 345
 346         case SB_ENDSCROLL:
 347             scrollEvent = wxEVT_SCROLL_CHANGED;
 348             break;
 349
 350         default:
 351             // unknown scroll event?
 352             return false;
 353     }
 354
 355     int newPos = ValueInvertOrNot((int) ::SendMessage((HWND) control, TBM_GETPOS, 0, 0));
 356     if ( (newPos < GetMin()) || (newPos > GetMax()) )
 357     {
 358         // out of range - but we did process it
 359         return true;
 360     }
 361
 362     SetValue(newPos);
 363
 364     wxScrollEvent event(scrollEvent, m_windowId);
 365     event.SetPosition(newPos);
 366     event.SetEventObject( this );
 367     HandleWindowEvent(event);
 368
 369     wxCommandEvent cevent( wxEVT_COMMAND_SLIDER_UPDATED, GetId() );
 370     cevent.SetInt( newPos );
 371     cevent.SetEventObject( this );
 372
 373     return HandleWindowEvent( cevent );
 374 }
 375
 376 void wxSlider::Command (wxCommandEvent & event)
 377 {
 378     SetValue (event.GetInt());
 379     ProcessCommand (event);
 380 }
 381
 382 // ----------------------------------------------------------------------------
 383 // geometry stuff
 384 // ----------------------------------------------------------------------------
 385
 386 wxRect wxSlider::GetBoundingBox() const
 387 {
 388     // take care not to call our own functions which would call us recursively
 389     int x, y, w, h;
 390     wxSliderBase::DoGetPosition(&x, &y);
 391     wxSliderBase::DoGetSize(&w, &h);
 392
 393     wxRect rect(x, y, w, h);
 394     if ( m_labels )
 395     {
 396         wxRect lrect = m_labels->GetBoundingBox();
 397         GetParent()->ScreenToClient(&lrect.x, &lrect.y);
 398         rect.Union(lrect);
 399     }
 400
 401     return rect;
 402 }
 403
 404 void wxSlider::DoGetSize(int *width, int *height) const
 405 {
 406     wxRect rect = GetBoundingBox();
 407
 408     if ( width )
 409         *width = rect.width;
 410     if ( height )
 411         *height = rect.height;
 412 }
 413
 414 void wxSlider::DoGetPosition(int *x, int *y) const
 415 {
 416     wxRect rect = GetBoundingBox();
 417
 418     if ( x )
 419         *x = rect.x;
 420     if ( y )
 421         *y = rect.y;
 422 }
 423
 424 int wxSlider::GetLabelsSize(int *width) const
 425 {
 426     int cy;
 427
 428     if ( width )
 429     {
 430         // find the max label width
 431         int wLabelMin, wLabelMax;
 432         GetTextExtent(Format(m_rangeMin), &wLabelMin, &cy);
 433         GetTextExtent(Format(m_rangeMax), &wLabelMax, &cy);
 434
 435         *width = wxMax(wLabelMin, wLabelMax);
 436     }
 437     else
 438     {
 439         cy = GetCharHeight();
 440     }
 441
 442     return EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy);
 443 }
 444
 445 void wxSlider::DoMoveWindow(int x, int y, int width, int height)
 446 {
 447     // all complications below are because we need to position the labels,
 448     // without them everything is easy
 449     if ( !m_labels )
 450     {
 451         wxSliderBase::DoMoveWindow(x, y, width, height);
 452         return;
 453     }
 454
 455     // be careful to position the slider itself after moving the labels as
 456     // otherwise our GetBoundingBox(), which is called from WM_SIZE handler,
 457     // would return a wrong result and wrong size would be cached internally
 458     if ( HasFlag(wxSL_VERTICAL) )
 459     {
 460         int wLabel;
 461         int hLabel = GetLabelsSize(&wLabel);
 462
 463         int xLabel = HasFlag(wxSL_LEFT) ? x + width - wLabel : x;
 464
 465         // position all labels: min at the top, value in the middle and max at
 466         // the bottom
 467         DoMoveSibling((HWND)(*m_labels)[SliderLabel_Min],
 468                      xLabel, y, wLabel, hLabel);
 469
 470         DoMoveSibling((HWND)(*m_labels)[SliderLabel_Value],
 471                      xLabel, y + (height - hLabel)/2, wLabel, hLabel);
 472
 473         DoMoveSibling((HWND)(*m_labels)[SliderLabel_Max],
 474                       xLabel, y + height - hLabel, wLabel, hLabel);
 475
 476         // position the slider itself along the left/right edge
 477         wxSliderBase::DoMoveWindow(HasFlag(wxSL_LEFT) ? x : x + wLabel + HGAP,
 478                                    y + hLabel/2,
 479                                    width - wLabel - HGAP,
 480                                    height - hLabel);
 481     }
 482     else // horizontal
 483     {
 484         int wLabel;
 485         int hLabel = GetLabelsSize(&wLabel);
 486
 487         int yLabel = HasFlag(wxSL_TOP) ? y + height - hLabel : y;
 488
 489         // position all labels: min on the left, value in the middle and max to
 490         // the right
 491         DoMoveSibling((HWND)(*m_labels)[SliderLabel_Min],
 492                       x, yLabel, wLabel, hLabel);
 493
 494         DoMoveSibling((HWND)(*m_labels)[SliderLabel_Value],
 495                       x + (width - wLabel)/2, yLabel, wLabel, hLabel);
 496
 497         DoMoveSibling((HWND)(*m_labels)[SliderLabel_Max],
 498                       x + width - wLabel, yLabel, wLabel, hLabel);
 499
 500         // position the slider itself along the top/bottom edge
 501         wxSliderBase::DoMoveWindow(x,
 502                                    HasFlag(wxSL_TOP) ? y : y + hLabel,
 503                                    width,
 504                                    height - hLabel);
 505     }
 506 }
 507
 508 wxSize wxSlider::DoGetBestSize() const
 509 {
 510     // these values are arbitrary
 511     static const int length = 100;
 512     static const int thumb = 24;
 513     static const int ticks = 8;
 514
 515     int *width;
 516     wxSize size;
 517     if ( HasFlag(wxSL_VERTICAL) )
 518     {
 519         size.x = thumb;
 520         size.y = length;
 521         width = &size.x;
 522
 523         if ( m_labels )
 524         {
 525             int wLabel;
 526             int hLabel = GetLabelsSize(&wLabel);
 527
 528             // account for the labels
 529             size.x += HGAP + wLabel;
 530
 531             // labels are indented relative to the slider itself
 532             size.y += hLabel;
 533         }
 534     }
 535     else // horizontal
 536     {
 537         size.x = length;
 538         size.y = thumb;
 539         width = &size.y;
 540
 541         if ( m_labels )
 542         {
 543             // labels add extra height
 544             size.y += GetLabelsSize();
 545         }
 546     }
 547
 548     // need extra space to show ticks
 549     if ( HasFlag(wxSL_TICKS) )
 550     {
 551         *width += ticks;
 552
 553         // and maybe twice as much if we show them on both sides
 554         if ( HasFlag(wxSL_BOTH) )
 555             *width += ticks;
 556     }
 557
 558     return size;
 559 }
 560
 561 // ----------------------------------------------------------------------------
 562 // slider-specific methods
 563 // ----------------------------------------------------------------------------
 564
 565 int wxSlider::GetValue() const
 566 {
 567     return ValueInvertOrNot(::SendMessage(GetHwnd(), TBM_GETPOS, 0, 0));
 568 }
 569
 570 void wxSlider::SetValue(int value)
 571 {
 572     ::SendMessage(GetHwnd(), TBM_SETPOS, (WPARAM)TRUE, (LPARAM)ValueInvertOrNot(value));
 573
 574     if ( m_labels )
 575     {
 576         ::SetWindowText((*m_labels)[SliderLabel_Value], Format(value).wx_str());
 577     }
 578 }
 579
 580 void wxSlider::SetRange(int minValue, int maxValue)
 581 {
 582     m_rangeMin = minValue;
 583     m_rangeMax = maxValue;
 584
 585     ::SendMessage(GetHwnd(), TBM_SETRANGEMIN, TRUE, m_rangeMin);
 586     ::SendMessage(GetHwnd(), TBM_SETRANGEMAX, TRUE, m_rangeMax);
 587
 588     if ( m_labels )
 589     {
 590         ::SetWindowText((*m_labels)[SliderLabel_Min],
 591                         Format(ValueInvertOrNot(m_rangeMin)).wx_str());
 592         ::SetWindowText((*m_labels)[SliderLabel_Max],
 593                         Format(ValueInvertOrNot(m_rangeMax)).wx_str());
 594     }
 595 }
 596
 597 void wxSlider::SetTickFreq(int n, int pos)
 598 {
 599     m_tickFreq = n;
 600     ::SendMessage( GetHwnd(), TBM_SETTICFREQ, (WPARAM) n, (LPARAM) pos );
 601 }
 602
 603 void wxSlider::SetPageSize(int pageSize)
 604 {
 605     ::SendMessage( GetHwnd(), TBM_SETPAGESIZE, (WPARAM) 0, (LPARAM) pageSize );
 606     m_pageSize = pageSize;
 607 }
 608
 609 int wxSlider::GetPageSize() const
 610 {
 611     return m_pageSize;
 612 }
 613
 614 void wxSlider::ClearSel()
 615 {
 616     ::SendMessage(GetHwnd(), TBM_CLEARSEL, (WPARAM) TRUE, (LPARAM) 0);
 617 }
 618
 619 void wxSlider::ClearTicks()
 620 {
 621     ::SendMessage(GetHwnd(), TBM_CLEARTICS, (WPARAM) TRUE, (LPARAM) 0);
 622 }
 623
 624 void wxSlider::SetLineSize(int lineSize)
 625 {
 626     m_lineSize = lineSize;
 627     ::SendMessage(GetHwnd(), TBM_SETLINESIZE, (WPARAM) 0, (LPARAM) lineSize);
 628 }
 629
 630 int wxSlider::GetLineSize() const
 631 {
 632     return (int)::SendMessage(GetHwnd(), TBM_GETLINESIZE, 0, 0);
 633 }
 634
 635 int wxSlider::GetSelEnd() const
 636 {
 637     return (int)::SendMessage(GetHwnd(), TBM_GETSELEND, 0, 0);
 638 }
 639
 640 int wxSlider::GetSelStart() const
 641 {
 642     return (int)::SendMessage(GetHwnd(), TBM_GETSELSTART, 0, 0);
 643 }
 644
 645 void wxSlider::SetSelection(int minPos, int maxPos)
 646 {
 647     ::SendMessage(GetHwnd(), TBM_SETSEL,
 648                   (WPARAM) TRUE /* redraw */,
 649                   (LPARAM) MAKELONG( minPos, maxPos) );
 650 }
 651
 652 void wxSlider::SetThumbLength(int len)
 653 {
 654     ::SendMessage(GetHwnd(), TBM_SETTHUMBLENGTH, (WPARAM) len, (LPARAM) 0);
 655 }
 656
 657 int wxSlider::GetThumbLength() const
 658 {
 659     return (int)::SendMessage( GetHwnd(), TBM_GETTHUMBLENGTH, 0, 0);
 660 }
 661
 662 void wxSlider::SetTick(int tickPos)
 663 {
 664     ::SendMessage( GetHwnd(), TBM_SETTIC, (WPARAM) 0, (LPARAM) tickPos );
 665 }
 666
 667 // ----------------------------------------------------------------------------
 668 // composite control methods
 669 // ----------------------------------------------------------------------------
 670
 671 WXHWND wxSlider::GetStaticMin() const
 672 {
 673     return m_labels ? (WXHWND)(*m_labels)[SliderLabel_Min] : NULL;
 674 }
 675
 676 WXHWND wxSlider::GetStaticMax() const
 677 {
 678     return m_labels ? (WXHWND)(*m_labels)[SliderLabel_Max] : NULL;
 679 }
 680
 681 WXHWND wxSlider::GetEditValue() const
 682 {
 683     return m_labels ? (WXHWND)(*m_labels)[SliderLabel_Value] : NULL;
 684 }
 685
 686 WX_FORWARD_STD_METHODS_TO_SUBWINDOWS(wxSlider, wxSliderBase, m_labels)
 687
 688 #endif // wxUSE_SLIDER