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     m_labelIds = NULL;
 139
 140     m_pageSize = 1;
 141     m_lineSize = 1;
 142     m_rangeMax = 0;
 143     m_rangeMin = 0;
 144     m_tickFreq = 0;
 145
 146     m_isDragging = false;
 147 }
 148
 149 bool
 150 wxSlider::Create(wxWindow *parent,
 151                  wxWindowID id,
 152                  int value,
 153                  int minValue,
 154                  int maxValue,
 155                  const wxPoint& pos,
 156                  const wxSize& size,
 157                  long style,
 158                  const wxValidator& validator,
 159                  const wxString& name)
 160 {
 161     // our styles are redundant: wxSL_LEFT/RIGHT imply wxSL_VERTICAL and
 162     // wxSL_TOP/BOTTOM imply wxSL_HORIZONTAL, but for backwards compatibility
 163     // reasons we can't really change it, instead try to infer the orientation
 164     // from the flags given to us here
 165     switch ( style & (wxSL_LEFT | wxSL_RIGHT | wxSL_TOP | wxSL_BOTTOM) )
 166     {
 167         case wxSL_LEFT:
 168         case wxSL_RIGHT:
 169             style |= wxSL_VERTICAL;
 170             break;
 171
 172         case wxSL_TOP:
 173         case wxSL_BOTTOM:
 174             style |= wxSL_HORIZONTAL;
 175             break;
 176
 177         case 0:
 178             // no specific direction, do we have at least the orientation?
 179             if ( !(style & (wxSL_HORIZONTAL | wxSL_VERTICAL)) )
 180             {
 181                 // no, choose default
 182                 style |= wxSL_BOTTOM | wxSL_HORIZONTAL;
 183             }
 184     };
 185
 186     wxASSERT_MSG( !(style & wxSL_VERTICAL) || !(style & wxSL_HORIZONTAL),
 187                     _T("incompatible slider direction and orientation") );
 188
 189
 190     // initialize everything
 191     if ( !CreateControl(parent, id, pos, size, style, validator, name) )
 192         return false;
 193
 194     // ensure that we have correct values for GetLabelsSize()
 195     m_rangeMin = minValue;
 196     m_rangeMax = maxValue;
 197
 198     // create the labels first, so that our DoGetBestSize() could take them
 199     // into account
 200     //
 201     // note that we could simply create 3 wxStaticTexts here but it could
 202     // result in some observable side effects at wx level (e.g. the parent of
 203     // wxSlider would have 3 more children than expected) and so we prefer not
 204     // to do it like this
 205     if ( m_windowStyle & wxSL_LABELS )
 206     {
 207         m_labels = new wxSubwindows(SliderLabel_Last);
 208         m_labelIds = new wxWindowIDRef[SliderLabel_Last];
 209
 210         HWND hwndParent = GetHwndOf(parent);
 211         for ( size_t n = 0; n < SliderLabel_Last; n++ )
 212         {
 213             m_labelIds[n] = NewControlId();
 214
 215             (*m_labels)[n] = ::CreateWindow
 216                                (
 217                                     wxT("STATIC"),
 218                                     NULL,
 219                                     WS_CHILD | WS_VISIBLE | SS_CENTER,
 220                                     0, 0, 0, 0,
 221                                     hwndParent,
 222                                     (HMENU)(wxWindowID)m_labelIds[n],
 223                                     wxGetInstance(),
 224                                     NULL
 225                                );
 226         }
 227
 228         m_labels->SetFont(GetFont());
 229     }
 230
 231     // now create the main control too
 232     if ( !MSWCreateControl(TRACKBAR_CLASS, wxEmptyString, pos, size) )
 233         return false;
 234
 235     // and initialize everything
 236     SetRange(minValue, maxValue);
 237     SetValue(value);
 238     SetPageSize((maxValue - minValue)/10);
 239
 240     // we need to position the labels correctly if we have them and if
 241     // SetSize() hadn't been called before (when best size was determined by
 242     // MSWCreateControl()) as in this case they haven't been put in place yet
 243     if ( m_labels && size.x != wxDefaultCoord && size.y != wxDefaultCoord )
 244     {
 245         SetSize(size);
 246     }
 247
 248     return true;
 249 }
 250
 251 WXDWORD wxSlider::MSWGetStyle(long style, WXDWORD *exstyle) const
 252 {
 253     WXDWORD msStyle = wxControl::MSWGetStyle(style, exstyle);
 254
 255     // TBS_HORZ, TBS_RIGHT and TBS_BOTTOM are 0 but do include them for clarity
 256     msStyle |= style & wxSL_VERTICAL ? TBS_VERT : TBS_HORZ;
 257
 258     if ( style & wxSL_BOTH )
 259     {
 260         // this fully specifies the style combined with TBS_VERT/HORZ above
 261         msStyle |= TBS_BOTH;
 262     }
 263     else // choose one direction
 264     {
 265         if ( style & wxSL_LEFT )
 266             msStyle |= TBS_LEFT;
 267         else if ( style & wxSL_RIGHT )
 268             msStyle |= TBS_RIGHT;
 269         else if ( style & wxSL_TOP )
 270             msStyle |= TBS_TOP;
 271         else if ( style & wxSL_BOTTOM )
 272             msStyle |= TBS_BOTTOM;
 273     }
 274
 275     if ( style & wxSL_AUTOTICKS )
 276         msStyle |= TBS_AUTOTICKS;
 277     else
 278         msStyle |= TBS_NOTICKS;
 279
 280     if ( style & wxSL_SELRANGE )
 281         msStyle |= TBS_ENABLESELRANGE;
 282
 283     return msStyle;
 284 }
 285
 286 wxSlider::~wxSlider()
 287 {
 288     delete m_labels;
 289     delete[] m_labelIds;
 290 }
 291
 292 // ----------------------------------------------------------------------------
 293 // event handling
 294 // ----------------------------------------------------------------------------
 295
 296 bool wxSlider::MSWOnScroll(int WXUNUSED(orientation),
 297                            WXWORD wParam,
 298                            WXWORD WXUNUSED(pos),
 299                            WXHWND control)
 300 {
 301     wxEventType scrollEvent;
 302     switch ( wParam )
 303     {
 304         case SB_TOP:
 305             scrollEvent = wxEVT_SCROLL_TOP;
 306             break;
 307
 308         case SB_BOTTOM:
 309             scrollEvent = wxEVT_SCROLL_BOTTOM;
 310             break;
 311
 312         case SB_LINEUP:
 313             scrollEvent = wxEVT_SCROLL_LINEUP;
 314             break;
 315
 316         case SB_LINEDOWN:
 317             scrollEvent = wxEVT_SCROLL_LINEDOWN;
 318             break;
 319
 320         case SB_PAGEUP:
 321             scrollEvent = wxEVT_SCROLL_PAGEUP;
 322             break;
 323
 324         case SB_PAGEDOWN:
 325             scrollEvent = wxEVT_SCROLL_PAGEDOWN;
 326             break;
 327
 328         case SB_THUMBTRACK:
 329             scrollEvent = wxEVT_SCROLL_THUMBTRACK;
 330             m_isDragging = true;
 331             break;
 332
 333         case SB_THUMBPOSITION:
 334             if ( m_isDragging )
 335             {
 336                 scrollEvent = wxEVT_SCROLL_THUMBRELEASE;
 337                 m_isDragging = false;
 338             }
 339             else
 340             {
 341                 // this seems to only happen when the mouse wheel is used: in
 342                 // this case, as it might be unexpected to get THUMBRELEASE
 343                 // without preceding THUMBTRACKs, we don't generate it at all
 344                 // but generate CHANGED event because the control itself does
 345                 // not send us SB_ENDSCROLL for whatever reason when mouse
 346                 // wheel is used
 347                 scrollEvent = wxEVT_SCROLL_CHANGED;
 348             }
 349             break;
 350
 351         case SB_ENDSCROLL:
 352             scrollEvent = wxEVT_SCROLL_CHANGED;
 353             break;
 354
 355         default:
 356             // unknown scroll event?
 357             return false;
 358     }
 359
 360     int newPos = ValueInvertOrNot((int) ::SendMessage((HWND) control, TBM_GETPOS, 0, 0));
 361     if ( (newPos < GetMin()) || (newPos > GetMax()) )
 362     {
 363         // out of range - but we did process it
 364         return true;
 365     }
 366
 367     SetValue(newPos);
 368
 369     wxScrollEvent event(scrollEvent, m_windowId);
 370     event.SetPosition(newPos);
 371     event.SetEventObject( this );
 372     HandleWindowEvent(event);
 373
 374     wxCommandEvent cevent( wxEVT_COMMAND_SLIDER_UPDATED, GetId() );
 375     cevent.SetInt( newPos );
 376     cevent.SetEventObject( this );
 377
 378     return HandleWindowEvent( cevent );
 379 }
 380
 381 void wxSlider::Command (wxCommandEvent & event)
 382 {
 383     SetValue (event.GetInt());
 384     ProcessCommand (event);
 385 }
 386
 387 // ----------------------------------------------------------------------------
 388 // geometry stuff
 389 // ----------------------------------------------------------------------------
 390
 391 wxRect wxSlider::GetBoundingBox() const
 392 {
 393     // take care not to call our own functions which would call us recursively
 394     int x, y, w, h;
 395     wxSliderBase::DoGetPosition(&x, &y);
 396     wxSliderBase::DoGetSize(&w, &h);
 397
 398     wxRect rect(x, y, w, h);
 399     if ( m_labels )
 400     {
 401         wxRect lrect = m_labels->GetBoundingBox();
 402         GetParent()->ScreenToClient(&lrect.x, &lrect.y);
 403         rect.Union(lrect);
 404     }
 405
 406     return rect;
 407 }
 408
 409 void wxSlider::DoGetSize(int *width, int *height) const
 410 {
 411     wxRect rect = GetBoundingBox();
 412
 413     if ( width )
 414         *width = rect.width;
 415     if ( height )
 416         *height = rect.height;
 417 }
 418
 419 void wxSlider::DoGetPosition(int *x, int *y) const
 420 {
 421     wxRect rect = GetBoundingBox();
 422
 423     if ( x )
 424         *x = rect.x;
 425     if ( y )
 426         *y = rect.y;
 427 }
 428
 429 int wxSlider::GetLabelsSize(int *width) const
 430 {
 431     int cy;
 432
 433     if ( width )
 434     {
 435         // find the max label width
 436         int wLabelMin, wLabelMax;
 437         GetTextExtent(Format(m_rangeMin), &wLabelMin, &cy);
 438         GetTextExtent(Format(m_rangeMax), &wLabelMax, &cy);
 439
 440         *width = wxMax(wLabelMin, wLabelMax);
 441     }
 442     else
 443     {
 444         cy = GetCharHeight();
 445     }
 446
 447     return EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy);
 448 }
 449
 450 void wxSlider::DoMoveWindow(int x, int y, int width, int height)
 451 {
 452     // all complications below are because we need to position the labels,
 453     // without them everything is easy
 454     if ( !m_labels )
 455     {
 456         wxSliderBase::DoMoveWindow(x, y, width, height);
 457         return;
 458     }
 459
 460     // be careful to position the slider itself after moving the labels as
 461     // otherwise our GetBoundingBox(), which is called from WM_SIZE handler,
 462     // would return a wrong result and wrong size would be cached internally
 463     if ( HasFlag(wxSL_VERTICAL) )
 464     {
 465         int wLabel;
 466         int hLabel = GetLabelsSize(&wLabel);
 467
 468         int xLabel = HasFlag(wxSL_LEFT) ? x + width - wLabel : x;
 469
 470         // position all labels: min at the top, value in the middle and max at
 471         // the bottom
 472         DoMoveSibling((HWND)(*m_labels)[SliderLabel_Min],
 473                      xLabel, y, wLabel, hLabel);
 474
 475         DoMoveSibling((HWND)(*m_labels)[SliderLabel_Value],
 476                      xLabel, y + (height - hLabel)/2, wLabel, hLabel);
 477
 478         DoMoveSibling((HWND)(*m_labels)[SliderLabel_Max],
 479                       xLabel, y + height - hLabel, wLabel, hLabel);
 480
 481         // position the slider itself along the left/right edge
 482         wxSliderBase::DoMoveWindow(HasFlag(wxSL_LEFT) ? x : x + wLabel + HGAP,
 483                                    y + hLabel/2,
 484                                    width - wLabel - HGAP,
 485                                    height - hLabel);
 486     }
 487     else // horizontal
 488     {
 489         int wLabel;
 490         int hLabel = GetLabelsSize(&wLabel);
 491
 492         int yLabel = HasFlag(wxSL_TOP) ? y + height - hLabel : y;
 493
 494         // position all labels: min on the left, value in the middle and max to
 495         // the right
 496         DoMoveSibling((HWND)(*m_labels)[SliderLabel_Min],
 497                       x, yLabel, wLabel, hLabel);
 498
 499         DoMoveSibling((HWND)(*m_labels)[SliderLabel_Value],
 500                       x + (width - wLabel)/2, yLabel, wLabel, hLabel);
 501
 502         DoMoveSibling((HWND)(*m_labels)[SliderLabel_Max],
 503                       x + width - wLabel, yLabel, wLabel, hLabel);
 504
 505         // position the slider itself along the top/bottom edge
 506         wxSliderBase::DoMoveWindow(x,
 507                                    HasFlag(wxSL_TOP) ? y : y + hLabel,
 508                                    width,
 509                                    height - hLabel);
 510     }
 511 }
 512
 513 wxSize wxSlider::DoGetBestSize() const
 514 {
 515     // these values are arbitrary
 516     static const int length = 100;
 517     static const int thumb = 24;
 518     static const int ticks = 8;
 519
 520     int *width;
 521     wxSize size;
 522     if ( HasFlag(wxSL_VERTICAL) )
 523     {
 524         size.x = thumb;
 525         size.y = length;
 526         width = &size.x;
 527
 528         if ( m_labels )
 529         {
 530             int wLabel;
 531             int hLabel = GetLabelsSize(&wLabel);
 532
 533             // account for the labels
 534             size.x += HGAP + wLabel;
 535
 536             // labels are indented relative to the slider itself
 537             size.y += hLabel;
 538         }
 539     }
 540     else // horizontal
 541     {
 542         size.x = length;
 543         size.y = thumb;
 544         width = &size.y;
 545
 546         if ( m_labels )
 547         {
 548             // labels add extra height
 549             size.y += GetLabelsSize();
 550         }
 551     }
 552
 553     // need extra space to show ticks
 554     if ( HasFlag(wxSL_TICKS) )
 555     {
 556         *width += ticks;
 557
 558         // and maybe twice as much if we show them on both sides
 559         if ( HasFlag(wxSL_BOTH) )
 560             *width += ticks;
 561     }
 562
 563     return size;
 564 }
 565
 566 // ----------------------------------------------------------------------------
 567 // slider-specific methods
 568 // ----------------------------------------------------------------------------
 569
 570 int wxSlider::GetValue() const
 571 {
 572     return ValueInvertOrNot(::SendMessage(GetHwnd(), TBM_GETPOS, 0, 0));
 573 }
 574
 575 void wxSlider::SetValue(int value)
 576 {
 577     ::SendMessage(GetHwnd(), TBM_SETPOS, (WPARAM)TRUE, (LPARAM)ValueInvertOrNot(value));
 578
 579     if ( m_labels )
 580     {
 581         ::SetWindowText((*m_labels)[SliderLabel_Value], Format(value).wx_str());
 582     }
 583 }
 584
 585 void wxSlider::SetRange(int minValue, int maxValue)
 586 {
 587     m_rangeMin = minValue;
 588     m_rangeMax = maxValue;
 589
 590     ::SendMessage(GetHwnd(), TBM_SETRANGEMIN, TRUE, m_rangeMin);
 591     ::SendMessage(GetHwnd(), TBM_SETRANGEMAX, TRUE, m_rangeMax);
 592
 593     if ( m_labels )
 594     {
 595         ::SetWindowText((*m_labels)[SliderLabel_Min],
 596                         Format(ValueInvertOrNot(m_rangeMin)).wx_str());
 597         ::SetWindowText((*m_labels)[SliderLabel_Max],
 598                         Format(ValueInvertOrNot(m_rangeMax)).wx_str());
 599     }
 600 }
 601
 602 void wxSlider::SetTickFreq(int n, int pos)
 603 {
 604     m_tickFreq = n;
 605     ::SendMessage( GetHwnd(), TBM_SETTICFREQ, (WPARAM) n, (LPARAM) pos );
 606 }
 607
 608 void wxSlider::SetPageSize(int pageSize)
 609 {
 610     ::SendMessage( GetHwnd(), TBM_SETPAGESIZE, (WPARAM) 0, (LPARAM) pageSize );
 611     m_pageSize = pageSize;
 612 }
 613
 614 int wxSlider::GetPageSize() const
 615 {
 616     return m_pageSize;
 617 }
 618
 619 void wxSlider::ClearSel()
 620 {
 621     ::SendMessage(GetHwnd(), TBM_CLEARSEL, (WPARAM) TRUE, (LPARAM) 0);
 622 }
 623
 624 void wxSlider::ClearTicks()
 625 {
 626     ::SendMessage(GetHwnd(), TBM_CLEARTICS, (WPARAM) TRUE, (LPARAM) 0);
 627 }
 628
 629 void wxSlider::SetLineSize(int lineSize)
 630 {
 631     m_lineSize = lineSize;
 632     ::SendMessage(GetHwnd(), TBM_SETLINESIZE, (WPARAM) 0, (LPARAM) lineSize);
 633 }
 634
 635 int wxSlider::GetLineSize() const
 636 {
 637     return (int)::SendMessage(GetHwnd(), TBM_GETLINESIZE, 0, 0);
 638 }
 639
 640 int wxSlider::GetSelEnd() const
 641 {
 642     return (int)::SendMessage(GetHwnd(), TBM_GETSELEND, 0, 0);
 643 }
 644
 645 int wxSlider::GetSelStart() const
 646 {
 647     return (int)::SendMessage(GetHwnd(), TBM_GETSELSTART, 0, 0);
 648 }
 649
 650 void wxSlider::SetSelection(int minPos, int maxPos)
 651 {
 652     ::SendMessage(GetHwnd(), TBM_SETSEL,
 653                   (WPARAM) TRUE /* redraw */,
 654                   (LPARAM) MAKELONG( minPos, maxPos) );
 655 }
 656
 657 void wxSlider::SetThumbLength(int len)
 658 {
 659     ::SendMessage(GetHwnd(), TBM_SETTHUMBLENGTH, (WPARAM) len, (LPARAM) 0);
 660 }
 661
 662 int wxSlider::GetThumbLength() const
 663 {
 664     return (int)::SendMessage( GetHwnd(), TBM_GETTHUMBLENGTH, 0, 0);
 665 }
 666
 667 void wxSlider::SetTick(int tickPos)
 668 {
 669     ::SendMessage( GetHwnd(), TBM_SETTIC, (WPARAM) 0, (LPARAM) tickPos );
 670 }
 671
 672 // ----------------------------------------------------------------------------
 673 // composite control methods
 674 // ----------------------------------------------------------------------------
 675
 676 WXHWND wxSlider::GetStaticMin() const
 677 {
 678     return m_labels ? (WXHWND)(*m_labels)[SliderLabel_Min] : NULL;
 679 }
 680
 681 WXHWND wxSlider::GetStaticMax() const
 682 {
 683     return m_labels ? (WXHWND)(*m_labels)[SliderLabel_Max] : NULL;
 684 }
 685
 686 WXHWND wxSlider::GetEditValue() const
 687 {
 688     return m_labels ? (WXHWND)(*m_labels)[SliderLabel_Value] : NULL;
 689 }
 690
 691 WX_FORWARD_STD_METHODS_TO_SUBWINDOWS(wxSlider, wxSliderBase, m_labels)
 692
 693 #endif // wxUSE_SLIDER