src/generic/sashwin.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        sashwin.cpp
   3 // Purpose:     wxSashWindow implementation. A sash window has an optional
   4 //              sash on each edge, allowing it to be dragged. An event
   5 //              is generated when the sash is released.
   6 // Author:      Julian Smart
   7 // Modified by:
   8 // Created:     01/02/97
   9 // RCS-ID:      $Id$
  10 // Copyright:   (c) Julian Smart
  11 // Licence:     wxWindows licence
  12 /////////////////////////////////////////////////////////////////////////////
  13
  14 // For compilers that support precompilation, includes "wx.h".
  15 #include "wx/wxprec.h"
  16
  17 #ifdef __BORLANDC__
  18 #pragma hdrstop
  19 #endif
  20
  21 #if wxUSE_SASH
  22
  23 #ifndef WX_PRECOMP
  24     #include "wx/dialog.h"
  25     #include "wx/frame.h"
  26     #include "wx/settings.h"
  27 #endif
  28
  29 #include "wx/math.h"
  30
  31 #include <stdlib.h>
  32
  33 #include "wx/dcscreen.h"
  34 #include "wx/sashwin.h"
  35 #include "wx/laywin.h"
  36
  37 DEFINE_EVENT_TYPE(wxEVT_SASH_DRAGGED)
  38
  39 IMPLEMENT_DYNAMIC_CLASS(wxSashWindow, wxWindow)
  40 IMPLEMENT_DYNAMIC_CLASS(wxSashEvent, wxCommandEvent)
  41
  42 BEGIN_EVENT_TABLE(wxSashWindow, wxWindow)
  43     EVT_PAINT(wxSashWindow::OnPaint)
  44     EVT_SIZE(wxSashWindow::OnSize)
  45     EVT_MOUSE_EVENTS(wxSashWindow::OnMouseEvent)
  46 #if defined( __WXMSW__ ) || defined( __WXMAC__)
  47     EVT_SET_CURSOR(wxSashWindow::OnSetCursor)
  48 #endif // wxMSW
  49
  50 END_EVENT_TABLE()
  51
  52 bool wxSashWindow::Create(wxWindow *parent, wxWindowID id, const wxPoint& pos,
  53     const wxSize& size, long style, const wxString& name)
  54 {
  55     return wxWindow::Create(parent, id, pos, size, style, name);
  56 }
  57
  58 wxSashWindow::~wxSashWindow()
  59 {
  60     delete m_sashCursorWE;
  61     delete m_sashCursorNS;
  62 }
  63
  64 void wxSashWindow::Init()
  65 {
  66     m_draggingEdge = wxSASH_NONE;
  67     m_dragMode = wxSASH_DRAG_NONE;
  68     m_oldX = 0;
  69     m_oldY = 0;
  70     m_firstX = 0;
  71     m_firstY = 0;
  72     m_borderSize = 3;
  73     m_extraBorderSize = 0;
  74     m_minimumPaneSizeX = 0;
  75     m_minimumPaneSizeY = 0;
  76     m_maximumPaneSizeX = 10000;
  77     m_maximumPaneSizeY = 10000;
  78     m_sashCursorWE = new wxCursor(wxCURSOR_SIZEWE);
  79     m_sashCursorNS = new wxCursor(wxCURSOR_SIZENS);
  80     m_mouseCaptured = false;
  81     m_currentCursor = NULL;
  82
  83     // Eventually, we'll respond to colour change messages
  84     InitColours();
  85 }
  86
  87 void wxSashWindow::OnPaint(wxPaintEvent& WXUNUSED(event))
  88 {
  89     wxPaintDC dc(this);
  90
  91     DrawBorders(dc);
  92     DrawSashes(dc);
  93 }
  94
  95 void wxSashWindow::OnMouseEvent(wxMouseEvent& event)
  96 {
  97     wxCoord x, y;
  98     event.GetPosition(&x, &y);
  99
 100     wxSashEdgePosition sashHit = SashHitTest(x, y);
 101
 102     if (event.LeftDown())
 103     {
 104         CaptureMouse();
 105         m_mouseCaptured = true;
 106
 107         if ( sashHit != wxSASH_NONE )
 108         {
 109             // Required for X to specify that
 110             // that we wish to draw on top of all windows
 111             // - and we optimise by specifying the area
 112             // for creating the overlap window.
 113             // Find the first frame or dialog and use this to specify
 114             // the area to draw on.
 115             wxWindow* parent = this;
 116
 117             while (parent && !parent->IsKindOf(CLASSINFO(wxDialog)) &&
 118                              !parent->IsKindOf(CLASSINFO(wxFrame)))
 119               parent = parent->GetParent();
 120
 121             wxScreenDC::StartDrawingOnTop(parent);
 122
 123             // We don't say we're dragging yet; we leave that
 124             // decision for the Dragging() branch, to ensure
 125             // the user has dragged a little bit.
 126             m_dragMode = wxSASH_DRAG_LEFT_DOWN;
 127             m_draggingEdge = sashHit;
 128             m_firstX = x;
 129             m_firstY = y;
 130
 131             if ( (sashHit == wxSASH_LEFT) || (sashHit == wxSASH_RIGHT) )
 132             {
 133                 if (m_currentCursor != m_sashCursorWE)
 134                 {
 135                     SetCursor(*m_sashCursorWE);
 136                 }
 137                 m_currentCursor = m_sashCursorWE;
 138             }
 139             else
 140             {
 141                 if (m_currentCursor != m_sashCursorNS)
 142                 {
 143                     SetCursor(*m_sashCursorNS);
 144                 }
 145                 m_currentCursor = m_sashCursorNS;
 146             }
 147         }
 148     }
 149     else if ( event.LeftUp() && m_dragMode == wxSASH_DRAG_LEFT_DOWN )
 150     {
 151         // Wasn't a proper drag
 152         if (m_mouseCaptured)
 153             ReleaseMouse();
 154         m_mouseCaptured = false;
 155
 156         wxScreenDC::EndDrawingOnTop();
 157         m_dragMode = wxSASH_DRAG_NONE;
 158         m_draggingEdge = wxSASH_NONE;
 159     }
 160     else if (event.LeftUp() && m_dragMode == wxSASH_DRAG_DRAGGING)
 161     {
 162         // We can stop dragging now and see what we've got.
 163         m_dragMode = wxSASH_DRAG_NONE;
 164         if (m_mouseCaptured)
 165             ReleaseMouse();
 166         m_mouseCaptured = false;
 167
 168         // Erase old tracker
 169         DrawSashTracker(m_draggingEdge, m_oldX, m_oldY);
 170
 171         // End drawing on top (frees the window used for drawing
 172         // over the screen)
 173         wxScreenDC::EndDrawingOnTop();
 174
 175         int w, h;
 176         GetSize(&w, &h);
 177         int xp, yp;
 178         GetPosition(&xp, &yp);
 179
 180         wxSashEdgePosition edge = m_draggingEdge;
 181         m_draggingEdge = wxSASH_NONE;
 182
 183         wxRect dragRect;
 184         wxSashDragStatus status = wxSASH_STATUS_OK;
 185
 186         // the new height and width of the window - if -1, it didn't change
 187         int newHeight = wxDefaultCoord,
 188             newWidth = wxDefaultCoord;
 189
 190         // NB: x and y may be negative and they're relative to the sash window
 191         //     upper left corner, while xp and yp are expressed in the parent
 192         //     window system of coordinates, so adjust them! After this
 193         //     adjustment, all coordinates are relative to the parent window.
 194         y += yp;
 195         x += xp;
 196
 197         switch (edge)
 198         {
 199             case wxSASH_TOP:
 200                 if ( y > yp + h )
 201                 {
 202                     // top sash shouldn't get below the bottom one
 203                     status = wxSASH_STATUS_OUT_OF_RANGE;
 204                 }
 205                 else
 206                 {
 207                     newHeight = h - (y - yp);
 208                 }
 209                 break;
 210
 211             case wxSASH_BOTTOM:
 212                 if ( y < yp )
 213                 {
 214                     // bottom sash shouldn't get above the top one
 215                     status = wxSASH_STATUS_OUT_OF_RANGE;
 216                 }
 217                 else
 218                 {
 219                     newHeight = y - yp;
 220                 }
 221                 break;
 222
 223             case wxSASH_LEFT:
 224                 if ( x > xp + w )
 225                 {
 226                     // left sash shouldn't get beyond the right one
 227                     status = wxSASH_STATUS_OUT_OF_RANGE;
 228                 }
 229                 else
 230                 {
 231                     newWidth = w - (x - xp);
 232                 }
 233                 break;
 234
 235             case wxSASH_RIGHT:
 236                 if ( x < xp )
 237                 {
 238                     // and the right sash, finally, shouldn't be beyond the
 239                     // left one
 240                     status = wxSASH_STATUS_OUT_OF_RANGE;
 241                 }
 242                 else
 243                 {
 244                     newWidth = x - xp;
 245                 }
 246                 break;
 247
 248             case wxSASH_NONE:
 249                 // can this happen at all?
 250                 break;
 251         }
 252
 253         if ( newHeight == wxDefaultCoord )
 254         {
 255             // didn't change
 256             newHeight = h;
 257         }
 258         else
 259         {
 260             // make sure it's in m_minimumPaneSizeY..m_maximumPaneSizeY range
 261             newHeight = wxMax(newHeight, m_minimumPaneSizeY);
 262             newHeight = wxMin(newHeight, m_maximumPaneSizeY);
 263         }
 264
 265         if ( newWidth == wxDefaultCoord )
 266         {
 267             // didn't change
 268             newWidth = w;
 269         }
 270         else
 271         {
 272             // make sure it's in m_minimumPaneSizeY..m_maximumPaneSizeY range
 273             newWidth = wxMax(newWidth, m_minimumPaneSizeX);
 274             newWidth = wxMin(newWidth, m_maximumPaneSizeX);
 275         }
 276
 277         dragRect = wxRect(x, y, newWidth, newHeight);
 278
 279         wxSashEvent eventSash(GetId(), edge);
 280         eventSash.SetEventObject(this);
 281         eventSash.SetDragStatus(status);
 282         eventSash.SetDragRect(dragRect);
 283         GetEventHandler()->ProcessEvent(eventSash);
 284     }
 285     else if ( event.LeftUp() )
 286     {
 287         if (m_mouseCaptured)
 288            ReleaseMouse();
 289         m_mouseCaptured = false;
 290     }
 291     else if (event.Moving() && !event.Dragging())
 292     {
 293         // Just change the cursor if required
 294         if ( sashHit != wxSASH_NONE )
 295         {
 296             if ( (sashHit == wxSASH_LEFT) || (sashHit == wxSASH_RIGHT) )
 297             {
 298                 if (m_currentCursor != m_sashCursorWE)
 299                 {
 300                     SetCursor(*m_sashCursorWE);
 301                 }
 302                 m_currentCursor = m_sashCursorWE;
 303             }
 304             else
 305             {
 306                 if (m_currentCursor != m_sashCursorNS)
 307                 {
 308                     SetCursor(*m_sashCursorNS);
 309                 }
 310                 m_currentCursor = m_sashCursorNS;
 311             }
 312         }
 313         else
 314         {
 315             SetCursor(wxNullCursor);
 316             m_currentCursor = NULL;
 317         }
 318     }
 319     else if ( event.Dragging() &&
 320               ((m_dragMode == wxSASH_DRAG_DRAGGING) ||
 321                (m_dragMode == wxSASH_DRAG_LEFT_DOWN)) )
 322     {
 323         if ( (m_draggingEdge == wxSASH_LEFT) || (m_draggingEdge == wxSASH_RIGHT) )
 324         {
 325             if (m_currentCursor != m_sashCursorWE)
 326             {
 327                 SetCursor(*m_sashCursorWE);
 328             }
 329             m_currentCursor = m_sashCursorWE;
 330         }
 331         else
 332         {
 333             if (m_currentCursor != m_sashCursorNS)
 334             {
 335                 SetCursor(*m_sashCursorNS);
 336             }
 337             m_currentCursor = m_sashCursorNS;
 338         }
 339
 340         if (m_dragMode == wxSASH_DRAG_LEFT_DOWN)
 341         {
 342             m_dragMode = wxSASH_DRAG_DRAGGING;
 343             DrawSashTracker(m_draggingEdge, x, y);
 344         }
 345         else
 346         {
 347             if ( m_dragMode == wxSASH_DRAG_DRAGGING )
 348             {
 349                 // Erase old tracker
 350                 DrawSashTracker(m_draggingEdge, m_oldX, m_oldY);
 351
 352                 // Draw new one
 353                 DrawSashTracker(m_draggingEdge, x, y);
 354             }
 355         }
 356         m_oldX = x;
 357         m_oldY = y;
 358     }
 359     else if ( event.LeftDClick() )
 360     {
 361         // Nothing
 362     }
 363     else
 364     {
 365     }
 366 }
 367
 368 void wxSashWindow::OnSize(wxSizeEvent& WXUNUSED(event))
 369 {
 370     SizeWindows();
 371 }
 372
 373 wxSashEdgePosition wxSashWindow::SashHitTest(int x, int y, int WXUNUSED(tolerance))
 374 {
 375     int cx, cy;
 376     GetClientSize(& cx, & cy);
 377
 378     int i;
 379     for (i = 0; i < 4; i++)
 380     {
 381         wxSashEdge& edge = m_sashes[i];
 382         wxSashEdgePosition position = (wxSashEdgePosition) i ;
 383
 384         if (edge.m_show)
 385         {
 386             switch (position)
 387             {
 388                 case wxSASH_TOP:
 389                 {
 390                     if (y >= 0 && y <= GetEdgeMargin(position))
 391                         return wxSASH_TOP;
 392                     break;
 393                 }
 394                 case wxSASH_RIGHT:
 395                 {
 396                     if ((x >= cx - GetEdgeMargin(position)) && (x <= cx))
 397                         return wxSASH_RIGHT;
 398                     break;
 399                 }
 400                 case wxSASH_BOTTOM:
 401                 {
 402                     if ((y >= cy - GetEdgeMargin(position)) && (y <= cy))
 403                         return wxSASH_BOTTOM;
 404                     break;
 405                 }
 406                 case wxSASH_LEFT:
 407                 {
 408                     if ((x <= GetEdgeMargin(position)) && (x >= 0))
 409                         return wxSASH_LEFT;
 410                     break;
 411                 }
 412                 case wxSASH_NONE:
 413                 {
 414                     break;
 415                 }
 416             }
 417         }
 418     }
 419     return wxSASH_NONE;
 420 }
 421
 422 // Draw 3D effect borders
 423 void wxSashWindow::DrawBorders(wxDC& dc)
 424 {
 425     int w, h;
 426     GetClientSize(&w, &h);
 427
 428     wxPen mediumShadowPen(m_mediumShadowColour, 1, wxSOLID);
 429     wxPen darkShadowPen(m_darkShadowColour, 1, wxSOLID);
 430     wxPen lightShadowPen(m_lightShadowColour, 1, wxSOLID);
 431     wxPen hilightPen(m_hilightColour, 1, wxSOLID);
 432
 433     if ( GetWindowStyleFlag() & wxSW_3DBORDER )
 434     {
 435         dc.SetPen(mediumShadowPen);
 436         dc.DrawLine(0, 0, w-1, 0);
 437         dc.DrawLine(0, 0, 0, h - 1);
 438
 439         dc.SetPen(darkShadowPen);
 440         dc.DrawLine(1, 1, w-2, 1);
 441         dc.DrawLine(1, 1, 1, h-2);
 442
 443         dc.SetPen(hilightPen);
 444         dc.DrawLine(0, h-1, w-1, h-1);
 445         dc.DrawLine(w-1, 0, w-1, h); // Surely the maximum y pos. should be h - 1.
 446                                      /// Anyway, h is required for MSW.
 447
 448         dc.SetPen(lightShadowPen);
 449         dc.DrawLine(w-2, 1, w-2, h-2); // Right hand side
 450         dc.DrawLine(1, h-2, w-1, h-2);     // Bottom
 451     }
 452     else if ( GetWindowStyleFlag() & wxSW_BORDER )
 453     {
 454         dc.SetBrush(*wxTRANSPARENT_BRUSH);
 455         dc.SetPen(*wxBLACK_PEN);
 456         dc.DrawRectangle(0, 0, w-1, h-1);
 457     }
 458
 459     dc.SetPen(wxNullPen);
 460     dc.SetBrush(wxNullBrush);
 461 }
 462
 463 void wxSashWindow::DrawSashes(wxDC& dc)
 464 {
 465     int i;
 466     for (i = 0; i < 4; i++)
 467         if (m_sashes[i].m_show)
 468             DrawSash((wxSashEdgePosition) i, dc);
 469 }
 470
 471 // Draw the sash
 472 void wxSashWindow::DrawSash(wxSashEdgePosition edge, wxDC& dc)
 473 {
 474     int w, h;
 475     GetClientSize(&w, &h);
 476
 477     wxPen facePen(m_faceColour, 1, wxSOLID);
 478     wxBrush faceBrush(m_faceColour, wxSOLID);
 479     wxPen mediumShadowPen(m_mediumShadowColour, 1, wxSOLID);
 480     wxPen darkShadowPen(m_darkShadowColour, 1, wxSOLID);
 481     wxPen lightShadowPen(m_lightShadowColour, 1, wxSOLID);
 482     wxPen hilightPen(m_hilightColour, 1, wxSOLID);
 483     wxColour blackClr(0, 0, 0);
 484     wxColour whiteClr(255, 255, 255);
 485     wxPen blackPen(blackClr, 1, wxSOLID);
 486     wxPen whitePen(whiteClr, 1, wxSOLID);
 487
 488     if ( edge == wxSASH_LEFT || edge == wxSASH_RIGHT )
 489     {
 490         int sashPosition = (edge == wxSASH_LEFT) ? 0 : ( w - GetEdgeMargin(edge) );
 491
 492         dc.SetPen(facePen);
 493         dc.SetBrush(faceBrush);
 494         dc.DrawRectangle(sashPosition, 0, GetEdgeMargin(edge), h);
 495
 496         if (GetWindowStyleFlag() & wxSW_3DSASH)
 497         {
 498             if (edge == wxSASH_LEFT)
 499             {
 500                 // Draw a dark grey line on the left to indicate that the
 501                 // sash is raised
 502                 dc.SetPen(mediumShadowPen);
 503                 dc.DrawLine(GetEdgeMargin(edge), 0, GetEdgeMargin(edge), h);
 504             }
 505             else
 506             {
 507                 // Draw a highlight line on the right to indicate that the
 508                 // sash is raised
 509                 dc.SetPen(hilightPen);
 510                 dc.DrawLine(w - GetEdgeMargin(edge), 0, w - GetEdgeMargin(edge), h);
 511             }
 512         }
 513     }
 514     else // top or bottom
 515     {
 516         int sashPosition = (edge == wxSASH_TOP) ? 0 : ( h - GetEdgeMargin(edge) );
 517
 518         dc.SetPen(facePen);
 519         dc.SetBrush(faceBrush);
 520         dc.DrawRectangle(0, sashPosition, w, GetEdgeMargin(edge));
 521
 522         if (GetWindowStyleFlag() & wxSW_3DSASH)
 523         {
 524             if (edge == wxSASH_BOTTOM)
 525             {
 526                 // Draw a highlight line on the bottom to indicate that the
 527                 // sash is raised
 528                 dc.SetPen(hilightPen);
 529                 dc.DrawLine(0, h - GetEdgeMargin(edge), w, h - GetEdgeMargin(edge));
 530             }
 531             else
 532             {
 533                 // Draw a drak grey line on the top to indicate that the
 534                 // sash is raised
 535                 dc.SetPen(mediumShadowPen);
 536                 dc.DrawLine(1, GetEdgeMargin(edge), w-1, GetEdgeMargin(edge));
 537             }
 538         }
 539     }
 540
 541     dc.SetPen(wxNullPen);
 542     dc.SetBrush(wxNullBrush);
 543 }
 544
 545 // Draw the sash tracker (for whilst moving the sash)
 546 void wxSashWindow::DrawSashTracker(wxSashEdgePosition edge, int x, int y)
 547 {
 548     int w, h;
 549     GetClientSize(&w, &h);
 550
 551     wxScreenDC screenDC;
 552     int x1, y1;
 553     int x2, y2;
 554
 555     if ( edge == wxSASH_LEFT || edge == wxSASH_RIGHT )
 556     {
 557         x1 = x; y1 = 2;
 558         x2 = x; y2 = h-2;
 559
 560         if ( (edge == wxSASH_LEFT) && (x1 > w) )
 561         {
 562             x1 = w; x2 = w;
 563         }
 564         else if ( (edge == wxSASH_RIGHT) && (x1 < 0) )
 565         {
 566             x1 = 0; x2 = 0;
 567         }
 568     }
 569     else
 570     {
 571         x1 = 2; y1 = y;
 572         x2 = w-2; y2 = y;
 573
 574         if ( (edge == wxSASH_TOP) && (y1 > h) )
 575         {
 576             y1 = h;
 577             y2 = h;
 578         }
 579         else if ( (edge == wxSASH_BOTTOM) && (y1 < 0) )
 580         {
 581             y1 = 0;
 582             y2 = 0;
 583         }
 584     }
 585
 586     ClientToScreen(&x1, &y1);
 587     ClientToScreen(&x2, &y2);
 588
 589     wxPen sashTrackerPen(*wxBLACK, 2, wxSOLID);
 590
 591     screenDC.SetLogicalFunction(wxINVERT);
 592     screenDC.SetPen(sashTrackerPen);
 593     screenDC.SetBrush(*wxTRANSPARENT_BRUSH);
 594
 595     screenDC.DrawLine(x1, y1, x2, y2);
 596
 597     screenDC.SetLogicalFunction(wxCOPY);
 598
 599     screenDC.SetPen(wxNullPen);
 600     screenDC.SetBrush(wxNullBrush);
 601 }
 602
 603 // Position and size subwindows.
 604 // Note that the border size applies to each subwindow, not
 605 // including the edges next to the sash.
 606 void wxSashWindow::SizeWindows()
 607 {
 608     int cw, ch;
 609     GetClientSize(&cw, &ch);
 610
 611     if (GetChildren().GetCount() == 1)
 612     {
 613         wxWindow* child = GetChildren().GetFirst()->GetData();
 614
 615         int x = 0;
 616         int y = 0;
 617         int width = cw;
 618         int height = ch;
 619
 620         // Top
 621         if (m_sashes[0].m_show)
 622         {
 623             y = m_borderSize;
 624             height -= m_borderSize;
 625         }
 626         y += m_extraBorderSize;
 627
 628         // Left
 629         if (m_sashes[3].m_show)
 630         {
 631             x = m_borderSize;
 632             width -= m_borderSize;
 633         }
 634         x += m_extraBorderSize;
 635
 636         // Right
 637         if (m_sashes[1].m_show)
 638         {
 639             width -= m_borderSize;
 640         }
 641         width -= 2*m_extraBorderSize;
 642
 643         // Bottom
 644         if (m_sashes[2].m_show)
 645         {
 646             height -= m_borderSize;
 647         }
 648         height -= 2*m_extraBorderSize;
 649
 650         child->SetSize(x, y, width, height);
 651     }
 652     else if (GetChildren().GetCount() > 1)
 653     {
 654         // Perhaps multiple children are themselves sash windows.
 655         // TODO: this doesn't really work because the subwindows sizes/positions
 656         // must be set to leave a gap for the parent's sash (hit-test and decorations).
 657         // Perhaps we can allow for this within LayoutWindow, testing whether the parent
 658         // is a sash window, and if so, allowing some space for the edges.
 659         wxLayoutAlgorithm layout;
 660         layout.LayoutWindow(this);
 661     }
 662
 663     wxClientDC dc(this);
 664     DrawBorders(dc);
 665     DrawSashes(dc);
 666 }
 667
 668 // Initialize colours
 669 void wxSashWindow::InitColours()
 670 {
 671     // Shadow colours
 672     m_faceColour = wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE);
 673     m_mediumShadowColour = wxSystemSettings::GetColour(wxSYS_COLOUR_3DSHADOW);
 674     m_darkShadowColour = wxSystemSettings::GetColour(wxSYS_COLOUR_3DDKSHADOW);
 675     m_lightShadowColour = wxSystemSettings::GetColour(wxSYS_COLOUR_3DLIGHT);
 676     m_hilightColour = wxSystemSettings::GetColour(wxSYS_COLOUR_3DHILIGHT);
 677 }
 678
 679 void wxSashWindow::SetSashVisible(wxSashEdgePosition edge, bool sash)
 680 {
 681      m_sashes[edge].m_show = sash;
 682      if (sash)
 683         m_sashes[edge].m_margin = m_borderSize;
 684      else
 685         m_sashes[edge].m_margin = 0;
 686 }
 687
 688 #if defined( __WXMSW__ ) || defined( __WXMAC__)
 689
 690 // this is currently called (and needed) under MSW only...
 691 void wxSashWindow::OnSetCursor(wxSetCursorEvent& event)
 692 {
 693     // if we don't do it, the resizing cursor might be set for child window:
 694     // and like this we explicitly say that our cursor should not be used for
 695     // children windows which overlap us
 696
 697     if ( SashHitTest(event.GetX(), event.GetY()) != wxSASH_NONE)
 698     {
 699         // default processing is ok
 700         event.Skip();
 701     }
 702     //else: do nothing, in particular, don't call Skip()
 703 }
 704
 705 #endif // wxMSW
 706
 707 #endif // wxUSE_SASH