src/msw/slider95.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        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 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  18 #pragma implementation "slider95.h"
  19 #endif
  20
  21 // ----------------------------------------------------------------------------
  22 // headers
  23 // ----------------------------------------------------------------------------
  24
  25 // For compilers that support precompilation, includes "wx.h".
  26 #include "wx/wxprec.h"
  27
  28 #ifdef __BORLANDC__
  29     #pragma hdrstop
  30 #endif
  31
  32 #if wxUSE_SLIDER
  33
  34 #ifndef WX_PRECOMP
  35     #include "wx/brush.h"
  36 #endif
  37
  38 #include "wx/slider.h"
  39 #include "wx/msw/subwin.h"
  40
  41 #if !(defined(__GNUWIN32_OLD__) && !defined(__CYGWIN10__))
  42     #include <commctrl.h>
  43 #endif
  44
  45 #define USE_DEFERRED_SIZING 1
  46
  47 // ----------------------------------------------------------------------------
  48 // constants
  49 // ----------------------------------------------------------------------------
  50
  51 // indices of labels in wxSlider::m_labels
  52 enum
  53 {
  54     SliderLabel_Min,
  55     SliderLabel_Max,
  56     SliderLabel_Value,
  57     SliderLabel_Last
  58 };
  59
  60 // the gap between the slider and the labels, in pixels
  61 static const int HGAP = 5;
  62
  63 // ----------------------------------------------------------------------------
  64 // XTI
  65 // ----------------------------------------------------------------------------
  66
  67 #if wxUSE_EXTENDED_RTTI
  68 WX_DEFINE_FLAGS( wxSliderStyle )
  69
  70 wxBEGIN_FLAGS( wxSliderStyle )
  71     // new style border flags, we put them first to
  72     // use them for streaming out
  73     wxFLAGS_MEMBER(wxBORDER_SIMPLE)
  74     wxFLAGS_MEMBER(wxBORDER_SUNKEN)
  75     wxFLAGS_MEMBER(wxBORDER_DOUBLE)
  76     wxFLAGS_MEMBER(wxBORDER_RAISED)
  77     wxFLAGS_MEMBER(wxBORDER_STATIC)
  78     wxFLAGS_MEMBER(wxBORDER_NONE)
  79
  80     // old style border flags
  81     wxFLAGS_MEMBER(wxSIMPLE_BORDER)
  82     wxFLAGS_MEMBER(wxSUNKEN_BORDER)
  83     wxFLAGS_MEMBER(wxDOUBLE_BORDER)
  84     wxFLAGS_MEMBER(wxRAISED_BORDER)
  85     wxFLAGS_MEMBER(wxSTATIC_BORDER)
  86     wxFLAGS_MEMBER(wxBORDER)
  87
  88     // standard window styles
  89     wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
  90     wxFLAGS_MEMBER(wxCLIP_CHILDREN)
  91     wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
  92     wxFLAGS_MEMBER(wxWANTS_CHARS)
  93     wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
  94     wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
  95     wxFLAGS_MEMBER(wxVSCROLL)
  96     wxFLAGS_MEMBER(wxHSCROLL)
  97
  98     wxFLAGS_MEMBER(wxSL_HORIZONTAL)
  99     wxFLAGS_MEMBER(wxSL_VERTICAL)
 100     wxFLAGS_MEMBER(wxSL_AUTOTICKS)
 101     wxFLAGS_MEMBER(wxSL_LABELS)
 102     wxFLAGS_MEMBER(wxSL_LEFT)
 103     wxFLAGS_MEMBER(wxSL_TOP)
 104     wxFLAGS_MEMBER(wxSL_RIGHT)
 105     wxFLAGS_MEMBER(wxSL_BOTTOM)
 106     wxFLAGS_MEMBER(wxSL_BOTH)
 107     wxFLAGS_MEMBER(wxSL_SELRANGE)
 108     wxFLAGS_MEMBER(wxSL_INVERSE)
 109
 110 wxEND_FLAGS( wxSliderStyle )
 111
 112 IMPLEMENT_DYNAMIC_CLASS_XTI(wxSlider, wxControl,"wx/scrolbar.h")
 113
 114 wxBEGIN_PROPERTIES_TABLE(wxSlider)
 115     wxEVENT_RANGE_PROPERTY( Scroll , wxEVT_SCROLL_TOP , wxEVT_SCROLL_ENDSCROLL , wxScrollEvent )
 116     wxEVENT_PROPERTY( Updated , wxEVT_COMMAND_SLIDER_UPDATED , wxCommandEvent )
 117
 118     wxPROPERTY( Value , int , SetValue, GetValue , 0, 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
 119     wxPROPERTY( Minimum , int , SetMin, GetMin, 0 , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
 120     wxPROPERTY( Maximum , int , SetMax, GetMax, 0 , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
 121     wxPROPERTY( PageSize , int , SetPageSize, GetLineSize, 1 , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
 122     wxPROPERTY( LineSize , int , SetLineSize, GetLineSize, 1 , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
 123     wxPROPERTY( ThumbLength , int , SetThumbLength, GetThumbLength, 1 , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
 124     wxPROPERTY_FLAGS( WindowStyle , wxSliderStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
 125 wxEND_PROPERTIES_TABLE()
 126
 127 wxBEGIN_HANDLERS_TABLE(wxSlider)
 128 wxEND_HANDLERS_TABLE()
 129
 130 wxCONSTRUCTOR_8( wxSlider , wxWindow* , Parent , wxWindowID , Id , int , Value , int , Minimum , int , Maximum , wxPoint , Position , wxSize , Size , long , WindowStyle )
 131 #else
 132 IMPLEMENT_DYNAMIC_CLASS(wxSlider, wxControl)
 133 #endif
 134
 135 // ============================================================================
 136 // wxSlider implementation
 137 // ============================================================================
 138
 139 // ----------------------------------------------------------------------------
 140 // construction
 141 // ----------------------------------------------------------------------------
 142
 143 void wxSlider::Init()
 144 {
 145     m_labels = NULL;
 146
 147     m_pageSize = 1;
 148     m_lineSize = 1;
 149     m_rangeMax = 0;
 150     m_rangeMin = 0;
 151     m_tickFreq = 0;
 152 }
 153
 154 bool
 155 wxSlider::Create(wxWindow *parent,
 156                  wxWindowID id,
 157                  int value,
 158                  int minValue,
 159                  int maxValue,
 160                  const wxPoint& pos,
 161                  const wxSize& size,
 162                  long style,
 163                  const wxValidator& validator,
 164                  const wxString& name)
 165 {
 166     // our styles are redundant: wxSL_LEFT/RIGHT imply wxSL_VERTICAL and
 167     // wxSL_TOP/BOTTOM imply wxSL_HORIZONTAL, but for backwards compatibility
 168     // reasons we can't really change it, instead try to infer the orientation
 169     // from the flags given to us here
 170     switch ( style & (wxSL_LEFT | wxSL_RIGHT | wxSL_TOP | wxSL_BOTTOM) )
 171     {
 172         case wxSL_LEFT:
 173         case wxSL_RIGHT:
 174             style |= wxSL_VERTICAL;
 175             break;
 176
 177         case wxSL_TOP:
 178         case wxSL_BOTTOM:
 179             style |= wxSL_HORIZONTAL;
 180             break;
 181
 182         case 0:
 183             // no specific direction, do we have at least the orientation?
 184             if ( !(style & (wxSL_HORIZONTAL | wxSL_VERTICAL)) )
 185             {
 186                 // no, choose default
 187                 style |= wxSL_BOTTOM | wxSL_HORIZONTAL;
 188             }
 189     };
 190
 191     wxASSERT_MSG( !(style & wxSL_VERTICAL) | !(style & wxSL_HORIZONTAL),
 192                     _T("incompatible slider direction and orientation") );
 193
 194
 195     // initialize everything
 196     if ( !CreateControl(parent, id, pos, size, style, validator, name) )
 197         return false;
 198
 199     // ensure that we have correct values for GetLabelsSize()
 200     m_rangeMin = minValue;
 201     m_rangeMax = maxValue;
 202
 203     // create the labels first, so that our DoGetBestSize() could take them
 204     // into account
 205     //
 206     // note that we could simply create 3 wxStaticTexts here but it could
 207     // result in some observable side effects at wx level (e.g. the parent of
 208     // wxSlider would have 3 more children than expected) and so we prefer not
 209     // to do it like this
 210     if ( m_windowStyle & wxSL_LABELS )
 211     {
 212         m_labels = new wxSubwindows(SliderLabel_Last);
 213
 214         HWND hwndParent = GetHwndOf(parent);
 215         for ( size_t n = 0; n < SliderLabel_Last; n++ )
 216         {
 217             (*m_labels)[n] = ::CreateWindow
 218                                (
 219                                     wxT("STATIC"),
 220                                     NULL,
 221                                     WS_CHILD | WS_VISIBLE | SS_CENTER,
 222                                     0, 0, 0, 0,
 223                                     hwndParent,
 224                                     (HMENU)NewControlId(),
 225                                     wxGetInstance(),
 226                                     NULL
 227                                );
 228         }
 229
 230         m_labels->SetFont(GetFont());
 231     }
 232
 233     // now create the main control too
 234     if ( !MSWCreateControl(TRACKBAR_CLASS, wxEmptyString, pos, size) )
 235         return false;
 236
 237     // and initialize everything
 238     SetRange(minValue, maxValue);
 239     SetValue(value);
 240     SetPageSize((maxValue - minValue)/10);
 241
 242     // we need to position the labels correctly if we have them and if
 243     // SetSize() hadn't been called before (when best size was determined by
 244     // MSWCreateControl()) as in this case they haven't been put in place yet
 245     if ( m_labels && size.x != wxDefaultCoord && size.y != wxDefaultCoord )
 246     {
 247         SetSize(size);
 248     }
 249
 250     return true;
 251 }
 252
 253 WXDWORD wxSlider::MSWGetStyle(long style, WXDWORD *exstyle) const
 254 {
 255     WXDWORD msStyle = wxControl::MSWGetStyle(style, exstyle);
 256
 257     // TBS_HORZ, TBS_RIGHT and TBS_BOTTOM are 0 but do include them for clarity
 258     msStyle |= style & wxSL_VERTICAL ? TBS_VERT : TBS_HORZ;
 259
 260     if ( style & wxSL_BOTH )
 261     {
 262         // this fully specifies the style combined with TBS_VERT/HORZ above
 263         msStyle |= TBS_BOTH;
 264     }
 265     else // choose one direction
 266     {
 267         if ( style & wxSL_LEFT )
 268             msStyle |= TBS_LEFT;
 269         else if ( style & wxSL_RIGHT )
 270             msStyle |= TBS_RIGHT;
 271         else if ( style & wxSL_TOP )
 272             msStyle |= TBS_TOP;
 273         else if ( style & wxSL_BOTTOM )
 274             msStyle |= TBS_BOTTOM;
 275     }
 276
 277     if ( style & wxSL_AUTOTICKS )
 278         msStyle |= TBS_AUTOTICKS;
 279     else
 280         msStyle |= TBS_NOTICKS;
 281
 282     if ( style & wxSL_SELRANGE )
 283         msStyle |= TBS_ENABLESELRANGE;
 284
 285     return msStyle;
 286 }
 287
 288 wxSlider::~wxSlider()
 289 {
 290     delete m_labels;
 291 }
 292
 293 // ----------------------------------------------------------------------------
 294 // event handling
 295 // ----------------------------------------------------------------------------
 296
 297 bool wxSlider::MSWOnScroll(int WXUNUSED(orientation),
 298                            WXWORD wParam,
 299                            WXWORD WXUNUSED(pos),
 300                            WXHWND control)
 301 {
 302     wxEventType scrollEvent;
 303     switch ( wParam )
 304     {
 305         case SB_TOP:
 306             scrollEvent = wxEVT_SCROLL_TOP;
 307             break;
 308
 309         case SB_BOTTOM:
 310             scrollEvent = wxEVT_SCROLL_BOTTOM;
 311             break;
 312
 313         case SB_LINEUP:
 314             scrollEvent = wxEVT_SCROLL_LINEUP;
 315             break;
 316
 317         case SB_LINEDOWN:
 318             scrollEvent = wxEVT_SCROLL_LINEDOWN;
 319             break;
 320
 321         case SB_PAGEUP:
 322             scrollEvent = wxEVT_SCROLL_PAGEUP;
 323             break;
 324
 325         case SB_PAGEDOWN:
 326             scrollEvent = wxEVT_SCROLL_PAGEDOWN;
 327             break;
 328
 329         case SB_THUMBTRACK:
 330             scrollEvent = wxEVT_SCROLL_THUMBTRACK;
 331             break;
 332
 333         case SB_THUMBPOSITION:
 334             scrollEvent = wxEVT_SCROLL_THUMBRELEASE;
 335             break;
 336
 337         case SB_ENDSCROLL:
 338             scrollEvent = wxEVT_SCROLL_ENDSCROLL;
 339             break;
 340
 341         default:
 342             // unknown scroll event?
 343             return false;
 344     }
 345
 346     int newPos = ValueInvertOrNot((int) ::SendMessage((HWND) control, TBM_GETPOS, 0, 0));
 347     if ( (newPos < GetMin()) || (newPos > GetMax()) )
 348     {
 349         // out of range - but we did process it
 350         return true;
 351     }
 352
 353     SetValue(newPos);
 354
 355     wxScrollEvent event(scrollEvent, m_windowId);
 356     event.SetPosition(newPos);
 357     event.SetEventObject( this );
 358     GetEventHandler()->ProcessEvent(event);
 359
 360     wxCommandEvent cevent( wxEVT_COMMAND_SLIDER_UPDATED, GetId() );
 361     cevent.SetInt( newPos );
 362     cevent.SetEventObject( this );
 363
 364     return GetEventHandler()->ProcessEvent( cevent );
 365 }
 366
 367 void wxSlider::Command (wxCommandEvent & event)
 368 {
 369     SetValue (event.GetInt());
 370     ProcessCommand (event);
 371 }
 372
 373 // ----------------------------------------------------------------------------
 374 // geometry stuff
 375 // ----------------------------------------------------------------------------
 376
 377 wxRect wxSlider::GetBoundingBox() const
 378 {
 379     // take care not to call our own functions which would call us recursively
 380     int x, y, w, h;
 381     wxSliderBase::DoGetPosition(&x, &y);
 382     wxSliderBase::DoGetSize(&w, &h);
 383
 384     wxRect rect(x, y, w, h);
 385     if ( m_labels )
 386     {
 387         wxRect lrect = m_labels->GetBoundingBox();
 388         GetParent()->ScreenToClient(&lrect.x, &lrect.y);
 389         rect.Union(lrect);
 390     }
 391
 392     return rect;
 393 }
 394
 395 void wxSlider::DoGetSize(int *width, int *height) const
 396 {
 397     wxRect rect = GetBoundingBox();
 398
 399     if ( width )
 400         *width = rect.width;
 401     if ( height )
 402         *height = rect.height;
 403 }
 404
 405 void wxSlider::DoGetPosition(int *x, int *y) const
 406 {
 407     wxRect rect = GetBoundingBox();
 408
 409     if ( x )
 410         *x = rect.x;
 411     if ( y )
 412         *y = rect.y;
 413 }
 414
 415 int wxSlider::GetLabelsSize(int *width) const
 416 {
 417     int cy;
 418
 419     if ( width )
 420     {
 421         // find the max label width
 422         int wLabelMin, wLabelMax;
 423         GetTextExtent(Format(m_rangeMin), &wLabelMin, &cy);
 424         GetTextExtent(Format(m_rangeMax), &wLabelMax, &cy);
 425
 426         *width = wxMax(wLabelMin, wLabelMax);
 427     }
 428     else
 429     {
 430         cy = GetCharHeight();
 431     }
 432
 433     return EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy);
 434 }
 435
 436 void wxSlider::DoMoveWindow(int x, int y, int width, int height)
 437 {
 438     // all complications below are because we need to position the labels,
 439     // without them everything is easy
 440     if ( !m_labels )
 441     {
 442         wxSliderBase::DoMoveWindow(x, y, width, height);
 443         return;
 444     }
 445
 446     // if our parent had prepared a defer window handle for us, use it (unless
 447     // we are a top level window)
 448     wxWindowMSW *parent = GetParent();
 449
 450 #if USE_DEFERRED_SIZING
 451     HDWP hdwp = parent && !IsTopLevel() ? (HDWP)parent->m_hDWP : NULL;
 452 #else
 453     HDWP hdwp = 0;
 454 #endif
 455
 456     // be careful to position the slider itself after moving the labels as
 457     // otherwise our GetBoundingBox(), which is called from WM_SIZE handler,
 458     // would return a wrong result and wrong size would be cached internally
 459     if ( HasFlag(wxSL_VERTICAL) )
 460     {
 461         int wLabel;
 462         int hLabel = GetLabelsSize(&wLabel);
 463
 464         int xLabel = HasFlag(wxSL_LEFT) ? x + width - wLabel : x;
 465
 466         // position all labels: min at the top, value in the middle and max at
 467         // the bottom
 468         wxMoveWindowDeferred(hdwp, this, (*m_labels)[SliderLabel_Min],
 469                      xLabel, y, wLabel, hLabel);
 470
 471         wxMoveWindowDeferred(hdwp, this, (*m_labels)[SliderLabel_Value],
 472                      xLabel, y + (height - hLabel)/2, wLabel, hLabel);
 473
 474         wxMoveWindowDeferred(hdwp, this, (*m_labels)[SliderLabel_Max],
 475                      xLabel, y + height - hLabel, wLabel, hLabel);
 476
 477         // position the slider itself along the left/right edge
 478         wxMoveWindowDeferred(hdwp, this, GetHwnd(),
 479                      HasFlag(wxSL_LEFT) ? x : x + wLabel + HGAP,
 480                      y + hLabel/2,
 481                      width - wLabel - HGAP,
 482                      height - hLabel);
 483     }
 484     else // horizontal
 485     {
 486         int wLabel;
 487         int hLabel = GetLabelsSize(&wLabel);
 488
 489         int yLabel = HasFlag(wxSL_TOP) ? y + height - hLabel : y;
 490
 491         // position all labels: min on the left, value in the middle and max to
 492         // the right
 493         wxMoveWindowDeferred(hdwp, this, (*m_labels)[SliderLabel_Min],
 494                      x, yLabel, wLabel, hLabel);
 495
 496         wxMoveWindowDeferred(hdwp, this, (*m_labels)[SliderLabel_Value],
 497                      x + (width - wLabel)/2, yLabel, wLabel, hLabel);
 498
 499         wxMoveWindowDeferred(hdwp, this, (*m_labels)[SliderLabel_Max],
 500                      x + width - wLabel, yLabel, wLabel, hLabel);
 501
 502         // position the slider itself along the top/bottom edge
 503         wxMoveWindowDeferred(hdwp, this, GetHwnd(),
 504                      x,
 505                      HasFlag(wxSL_TOP) ? y : y + hLabel,
 506                      width,
 507                      height - hLabel);
 508     }
 509
 510 #if USE_DEFERRED_SIZING
 511     if ( parent )
 512     {
 513         // hdwp must be updated as it may have been changed
 514         parent->m_hDWP = (WXHANDLE)hdwp;
 515     }
 516 #endif
 517 }
 518
 519 wxSize wxSlider::DoGetBestSize() const
 520 {
 521     // these values are arbitrary
 522     static const int length = 100;
 523     static const int thumb = 24;
 524     static const int ticks = 8;
 525
 526     int *width;
 527     wxSize size;
 528     if ( HasFlag(wxSL_VERTICAL) )
 529     {
 530         size.x = thumb;
 531         size.y = length;
 532         width = &size.x;
 533
 534         if ( m_labels )
 535         {
 536             int wLabel;
 537             int hLabel = GetLabelsSize(&wLabel);
 538
 539             // account for the labels
 540             size.x += HGAP + wLabel;
 541
 542             // labels are indented relative to the slider itself
 543             size.y += hLabel;
 544         }
 545     }
 546     else // horizontal
 547     {
 548         size.x = length;
 549         size.y = thumb;
 550         width = &size.y;
 551
 552         if ( m_labels )
 553         {
 554             // labels add extra height
 555             size.y += GetLabelsSize();
 556         }
 557     }
 558
 559     // need extra space to show ticks
 560     if ( HasFlag(wxSL_TICKS) )
 561     {
 562         *width += ticks;
 563
 564         // and maybe twice as much if we show them on both sides
 565         if ( HasFlag(wxSL_BOTH) )
 566             *width += ticks;
 567     }
 568
 569     return size;
 570 }
 571
 572 // ----------------------------------------------------------------------------
 573 // slider-specific methods
 574 // ----------------------------------------------------------------------------
 575
 576 int wxSlider::GetValue() const
 577 {
 578     return ValueInvertOrNot(::SendMessage(GetHwnd(), TBM_GETPOS, 0, 0));
 579 }
 580
 581 void wxSlider::SetValue(int value)
 582 {
 583     ::SendMessage(GetHwnd(), TBM_SETPOS, (WPARAM)TRUE, (LPARAM)ValueInvertOrNot(value));
 584
 585     if ( m_labels )
 586     {
 587         ::SetWindowText((*m_labels)[SliderLabel_Value], Format(value));
 588     }
 589 }
 590
 591 void wxSlider::SetRange(int minValue, int maxValue)
 592 {
 593     m_rangeMin = minValue;
 594     m_rangeMax = maxValue;
 595
 596     ::SendMessage(GetHwnd(), TBM_SETRANGEMIN, TRUE, m_rangeMin);
 597     ::SendMessage(GetHwnd(), TBM_SETRANGEMAX, TRUE, m_rangeMax);
 598
 599     if ( m_labels )
 600     {
 601         ::SetWindowText((*m_labels)[SliderLabel_Min], Format(ValueInvertOrNot(m_rangeMin)));
 602         ::SetWindowText((*m_labels)[SliderLabel_Max], Format(ValueInvertOrNot(m_rangeMax)));
 603     }
 604 }
 605
 606 void wxSlider::SetTickFreq(int n, int pos)
 607 {
 608     m_tickFreq = n;
 609     ::SendMessage( GetHwnd(), TBM_SETTICFREQ, (WPARAM) n, (LPARAM) pos );
 610 }
 611
 612 void wxSlider::SetPageSize(int pageSize)
 613 {
 614     ::SendMessage( GetHwnd(), TBM_SETPAGESIZE, (WPARAM) 0, (LPARAM) pageSize );
 615     m_pageSize = pageSize;
 616 }
 617
 618 int wxSlider::GetPageSize() const
 619 {
 620     return m_pageSize;
 621 }
 622
 623 void wxSlider::ClearSel()
 624 {
 625     ::SendMessage(GetHwnd(), TBM_CLEARSEL, (WPARAM) TRUE, (LPARAM) 0);
 626 }
 627
 628 void wxSlider::ClearTicks()
 629 {
 630     ::SendMessage(GetHwnd(), TBM_CLEARTICS, (WPARAM) TRUE, (LPARAM) 0);
 631 }
 632
 633 void wxSlider::SetLineSize(int lineSize)
 634 {
 635     m_lineSize = lineSize;
 636     ::SendMessage(GetHwnd(), TBM_SETLINESIZE, (WPARAM) 0, (LPARAM) lineSize);
 637 }
 638
 639 int wxSlider::GetLineSize() const
 640 {
 641     return (int)::SendMessage(GetHwnd(), TBM_GETLINESIZE, 0, 0);
 642 }
 643
 644 int wxSlider::GetSelEnd() const
 645 {
 646     return (int)::SendMessage(GetHwnd(), TBM_SETSELEND, 0, 0);
 647 }
 648
 649 int wxSlider::GetSelStart() const
 650 {
 651     return (int)::SendMessage(GetHwnd(), TBM_GETSELSTART, 0, 0);
 652 }
 653
 654 void wxSlider::SetSelection(int minPos, int maxPos)
 655 {
 656     ::SendMessage(GetHwnd(), TBM_SETSEL,
 657                   (WPARAM) TRUE /* redraw */,
 658                   (LPARAM) MAKELONG( minPos, maxPos) );
 659 }
 660
 661 void wxSlider::SetThumbLength(int len)
 662 {
 663     ::SendMessage(GetHwnd(), TBM_SETTHUMBLENGTH, (WPARAM) len, (LPARAM) 0);
 664 }
 665
 666 int wxSlider::GetThumbLength() const
 667 {
 668     return (int)::SendMessage( GetHwnd(), TBM_GETTHUMBLENGTH, 0, 0);
 669 }
 670
 671 void wxSlider::SetTick(int tickPos)
 672 {
 673     ::SendMessage( GetHwnd(), TBM_SETTIC, (WPARAM) 0, (LPARAM) tickPos );
 674 }
 675
 676 // ----------------------------------------------------------------------------
 677 // composite control methods
 678 // ----------------------------------------------------------------------------
 679
 680 WXHWND wxSlider::GetStaticMin() const
 681 {
 682     return m_labels ? (WXHWND)(*m_labels)[SliderLabel_Min] : NULL;
 683 }
 684
 685 WXHWND wxSlider::GetStaticMax() const
 686 {
 687     return m_labels ? (WXHWND)(*m_labels)[SliderLabel_Max] : NULL;
 688 }
 689
 690 WXHWND wxSlider::GetEditValue() const
 691 {
 692     return m_labels ? (WXHWND)(*m_labels)[SliderLabel_Value] : NULL;
 693 }
 694
 695 WX_FORWARD_STD_METHODS_TO_SUBWINDOWS(wxSlider, wxSliderBase, m_labels)
 696
 697 #endif // wxUSE_SLIDER