src/os2/region.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // File:      region.cpp
   3 // Purpose:   Region class
   4 // Author:    David Webster
   5 // Modified by:
   6 // Created:   10/15/99
   7 // RCS-ID:    $Id$
   8 // Copyright: (c) Davdi Webster
   9 // Licence:   wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // For compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #include "wx/app.h"
  16 #include "wx/os2/region.h"
  17 #include "wx/gdicmn.h"
  18
  19 #include "wx/window.h"
  20 #include "wx/os2/private.h"
  21
  22     IMPLEMENT_DYNAMIC_CLASS(wxRegion, wxGDIObject)
  23     IMPLEMENT_DYNAMIC_CLASS(wxRegionIterator, wxObject)
  24
  25 //-----------------------------------------------------------------------------
  26 // wxRegionRefData implementation
  27 //-----------------------------------------------------------------------------
  28
  29 class WXDLLEXPORT wxRegionRefData : public wxGDIRefData {
  30 public:
  31     wxRegionRefData()
  32     {
  33         m_hRegion = 0;
  34         m_hPS     = 0;
  35     }
  36
  37     wxRegionRefData(const wxRegionRefData& rData)
  38     {
  39         RGNRECT                     vRgnData;
  40         PRECTL                      pRect = NULL;
  41
  42         if (::GpiQueryRegionRects( rData.m_hPS      // Pres space
  43                                   ,rData.m_hRegion  // Handle of region to query
  44                                   ,NULL             // Return all RECTs
  45                                   ,&vRgnData        // Will contain number or RECTs in region
  46                                   ,NULL             // NULL to return number of RECTs
  47                                  ))
  48         {
  49             pRect = new RECTL[vRgnData.crcReturned];
  50             vRgnData.crc = vRgnData.crcReturned;
  51             vRgnData.ircStart = 1;
  52             if (::GpiQueryRegionRects( rData.m_hPS     // Pres space of source
  53                                       ,rData.m_hRegion // Handle of source region
  54                                       ,NULL            // Return all RECTs
  55                                       ,&vRgnData       // Operations set to return rects
  56                                       ,pRect           // Will contain the actual RECTS
  57                                      ))
  58             {
  59                 m_hRegion = ::GpiCreateRegion( rData.m_hPS
  60                                               ,vRgnData.crcReturned
  61                                               ,pRect
  62                                              );
  63                 m_hPS = rData.m_hPS;
  64             }
  65             delete [] pRect;
  66         }
  67     }
  68
  69     ~wxRegionRefData()
  70     {
  71         ::GpiDestroyRegion(m_hPS, m_hRegion);
  72     }
  73
  74     HRGN                            m_hRegion;
  75     HPS                             m_hPS;
  76 };
  77
  78 #define M_REGION (((wxRegionRefData*)m_refData)->m_hRegion)
  79
  80 //-----------------------------------------------------------------------------
  81 // wxRegion
  82 //-----------------------------------------------------------------------------
  83
  84 /*!
  85  * Create an empty region.
  86  */
  87 wxRegion::wxRegion()
  88 {
  89     m_refData = new wxRegionRefData;
  90 } // end of wxRegion::wxRegion
  91
  92 wxRegion::wxRegion(
  93   WXHRGN                            hRegion,
  94   WXHDC                             hPS
  95 )
  96 {
  97     m_refData = new wxRegionRefData;
  98     M_REGION = (HRGN) hRegion;
  99     (((wxRegionRefData*)m_refData)->m_hPS) = hPS;
 100 } // end of wxRegion::wxRegion
 101
 102 wxRegion::wxRegion(
 103   wxCoord                           x
 104 , wxCoord                           y
 105 , wxCoord                           vWidth
 106 , wxCoord                           vHeight
 107 )
 108 {
 109     RECTL                           vRect;
 110     SIZEL                           vSize = {0, 0};
 111     DEVOPENSTRUC                    vDop = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
 112     HDC                             hDC = ::DevOpenDC( vHabmain
 113                                                       ,OD_MEMORY
 114                                                       ,"*"
 115                                                       ,5L
 116                                                       ,(PDEVOPENDATA)&vDop
 117                                                       ,NULLHANDLE
 118                                                      );
 119
 120
 121     vRect.xLeft   = x;
 122     vRect.xRight  = x + vWidth;
 123     vRect.yBottom = y;
 124     vRect.yTop    = y + vHeight;
 125
 126     m_refData     = new wxRegionRefData;
 127
 128     //
 129     // Need a PS to create a Region
 130     //
 131     ((wxRegionRefData*)m_refData)->m_hPS = ::GpiCreatePS( vHabmain
 132                                                          ,hDC
 133                                                          ,&vSize
 134                                                          ,PU_PELS | GPIT_MICRO | GPIA_ASSOC
 135                                                         );
 136     M_REGION      = ::GpiCreateRegion( ((wxRegionRefData*)m_refData)->m_hPS
 137                                       ,1
 138                                       ,&vRect
 139                                      );
 140 } // end of wxRegion::wxRegion
 141
 142 wxRegion::wxRegion(
 143   const wxPoint&                    rTopLeft
 144 , const wxPoint&                    rBottomRight
 145 )
 146 {
 147     RECTL                           vRect;
 148     SIZEL                           vSize = {0, 0};
 149     DEVOPENSTRUC                    vDop = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
 150     HDC                             hDC = ::DevOpenDC( vHabmain
 151                                                       ,OD_MEMORY
 152                                                       ,"*"
 153                                                       ,5L
 154                                                       ,(PDEVOPENDATA)&vDop
 155                                                       ,NULLHANDLE
 156                                                      );
 157
 158     vRect.xLeft   = rTopLeft.x;
 159     vRect.xRight  = rBottomRight.x;
 160     vRect.yBottom = rBottomRight.y;
 161     vRect.yTop    = rTopLeft.y;
 162
 163     m_refData     = new wxRegionRefData;
 164
 165     //
 166     // Need a PS to create a Region
 167     //
 168     ((wxRegionRefData*)m_refData)->m_hPS = ::GpiCreatePS( vHabmain
 169                                                          ,hDC
 170                                                          ,&vSize
 171                                                          ,PU_PELS | GPIT_MICRO | GPIA_ASSOC
 172                                                         );
 173     M_REGION      = ::GpiCreateRegion( ((wxRegionRefData*)m_refData)->m_hPS
 174                                       ,1
 175                                       ,&vRect
 176                                      );
 177 } // end of wxRegion::wxRegion
 178
 179 wxRegion::wxRegion(
 180   const wxRect&                     rRect
 181 )
 182 {
 183     RECTL                           vRect;
 184     SIZEL                           vSize = {0, 0};
 185     DEVOPENSTRUC                    vDop = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
 186     HDC                             hDC = ::DevOpenDC( vHabmain
 187                                                       ,OD_MEMORY
 188                                                       ,"*"
 189                                                       ,5L
 190                                                       ,(PDEVOPENDATA)&vDop
 191                                                       ,NULLHANDLE
 192                                                      );
 193
 194
 195     vRect.xLeft   = rRect.x;
 196     vRect.xRight  = rRect.x + rRect.width;
 197     vRect.yBottom = rRect.y;
 198     vRect.yTop    = rRect.y + rRect.height;
 199
 200     m_refData     = new wxRegionRefData;
 201
 202     //
 203     // Need a PS to create a Region
 204     //
 205     ((wxRegionRefData*)m_refData)->m_hPS = ::GpiCreatePS( vHabmain
 206                                                          ,hDC
 207                                                          ,&vSize
 208                                                          ,PU_PELS | GPIT_MICRO | GPIA_ASSOC
 209                                                         );
 210     M_REGION      = ::GpiCreateRegion( ((wxRegionRefData*)m_refData)->m_hPS
 211                                       ,1
 212                                       ,&vRect
 213                                      );
 214 } // end of wxRegion::wxRegion
 215
 216 //
 217 // Destroy the region.
 218 //
 219 wxRegion::~wxRegion()
 220 {
 221 } // end of wxRegion::~wxRegion
 222
 223 wxObjectRefData *wxRegion::CreateData() const
 224 {
 225     return new wxRegionRefData;
 226 }
 227
 228 wxObjectRefData *wxRegion::CloneData(const wxObjectRefData *data) const
 229 {
 230     return new wxRegionRefData(*(wxRegionRefData *)data);
 231 }
 232
 233 //-----------------------------------------------------------------------------
 234 //# Modify region
 235 //-----------------------------------------------------------------------------
 236
 237 bool wxRegion::Offset(
 238   wxCoord                           x
 239 , wxCoord                           y
 240 )
 241 {
 242     if ( !x && !y )
 243     {
 244         // nothing to do
 245         return TRUE;
 246     }
 247
 248     AllocExclusive();
 249
 250 #if 0
 251     if ( ::OffsetRgn(GetHrgn(), x, y) == ERROR )
 252     {
 253         wxLogLastError(_T("OffsetRgn"));
 254
 255         return FALSE;
 256     }
 257 #endif
 258     return TRUE;
 259 }
 260
 261 //
 262 // Clear current region
 263 //
 264 void wxRegion::Clear()
 265 {
 266     UnRef();
 267 } // end of wxRegion::Clear
 268
 269 //
 270 // Combine rectangle (x, y, w, h) with this.
 271 //
 272 bool wxRegion::Combine(
 273   wxCoord                           x
 274 , wxCoord                           y
 275 , wxCoord                           vWidth
 276 , wxCoord                           vHeight
 277 , wxRegionOp                        eOp
 278 )
 279 {
 280     AllocExclusive();
 281
 282     //
 283     // If ref count is 1, that means it's 'ours' anyway so no action.
 284     //
 285     RECTL                           vRect;
 286
 287     vRect.xLeft   = x;
 288     vRect.xRight  = x + vWidth;
 289     vRect.yBottom = y;
 290     vRect.yTop    = y + vHeight;
 291
 292     HRGN                            hRgn = ::GpiCreateRegion( ((wxRegionRefData*)m_refData)->m_hPS
 293                                                              ,1
 294                                                              ,&vRect
 295                                                             );
 296     LONG                            lMode = 0L;
 297
 298     switch (eOp)
 299     {
 300         case wxRGN_AND:
 301             lMode = CRGN_AND;
 302             break;
 303
 304         case wxRGN_OR:
 305             lMode = CRGN_OR;
 306             break;
 307
 308         case wxRGN_XOR:
 309             lMode = CRGN_XOR;
 310             break;
 311
 312         case wxRGN_DIFF:
 313             lMode = CRGN_DIFF;
 314             break;
 315
 316         case wxRGN_COPY:
 317         default:
 318             lMode = CRGN_COPY;
 319             break;
 320     }
 321     bool                            bSuccess = ::GpiCombineRegion( ((wxRegionRefData*)m_refData)->m_hPS
 322                                                                   ,M_REGION
 323                                                                   ,M_REGION
 324                                                                   ,hRgn
 325                                                                   ,lMode
 326                                                                  );
 327     ::GpiDestroyRegion ( ((wxRegionRefData*)m_refData)->m_hPS
 328                         ,hRgn
 329                        );
 330
 331     return bSuccess;
 332 } // end of wxRegion::Combine
 333
 334 //
 335 // Union region with this.
 336 //
 337 bool wxRegion::Combine(
 338   const wxRegion&                   rRegion
 339 , wxRegionOp                        eOp
 340 )
 341 {
 342     if (rRegion.Empty())
 343         return FALSE;
 344
 345     AllocExclusive();
 346
 347     LONG                            lMode = 0;
 348
 349     switch (eOp)
 350     {
 351         case wxRGN_AND:
 352             lMode = CRGN_AND;
 353             break;
 354
 355         case wxRGN_OR:
 356             lMode = CRGN_OR;
 357             break;
 358
 359         case wxRGN_XOR:
 360             lMode = CRGN_XOR;
 361             break;
 362
 363         case wxRGN_DIFF:
 364             lMode = CRGN_DIFF;
 365             break;
 366
 367         case wxRGN_COPY:
 368         default:
 369             lMode = CRGN_COPY;
 370             break;
 371     }
 372     return (::GpiCombineRegion( ((wxRegionRefData*)rRegion.m_refData)->m_hPS
 373                                ,M_REGION
 374                                ,M_REGION
 375                                ,((wxRegionRefData*)rRegion.m_refData)->m_hRegion
 376                                ,lMode
 377                               ) != RGN_ERROR);
 378 } // end of wxRegion::Combine
 379
 380 bool wxRegion::Combine(
 381   const wxRect&                     rRect
 382 , wxRegionOp                        eOp
 383 )
 384 {
 385     return Combine( rRect.GetLeft()
 386                    ,rRect.GetTop()
 387                    ,rRect.GetWidth()
 388                    ,rRect.GetHeight()
 389                    ,eOp
 390                   );
 391 } // end of wxRegion::Combine
 392
 393 //-----------------------------------------------------------------------------
 394 //# Information on region
 395 //-----------------------------------------------------------------------------
 396
 397 //
 398 // Outer bounds of region
 399 //
 400 void wxRegion::GetBox(
 401   wxCoord&                          x
 402 , wxCoord&                          y
 403 , wxCoord&                          vWidth
 404 , wxCoord&                          vHeight
 405 ) const
 406 {
 407     if (m_refData)
 408     {
 409         RECTL                       vRect;
 410         APIRET                      rc;
 411
 412         rc = ::GpiQueryRegionBox( ((wxRegionRefData*)m_refData)->m_hPS
 413                             ,M_REGION
 414                             ,&vRect
 415                            );
 416         x       = vRect.xLeft;
 417         y       = vRect.yTop;
 418         vWidth  = vRect.xRight - vRect.xLeft;
 419         vHeight = vRect.yTop - vRect.yBottom;
 420     }
 421     else
 422     {
 423         x = y = vWidth = vHeight = 0L;
 424     }
 425 } // end of wxRegion::GetBox
 426
 427 wxRect wxRegion::GetBox() const
 428 {
 429     wxCoord x, y, w, h;
 430     GetBox(x, y, w, h);
 431     return wxRect(x, y, w, h);
 432 }
 433
 434 //
 435 // Is region empty?
 436 //
 437 bool wxRegion::Empty() const
 438 {
 439     wxCoord                         x;
 440     wxCoord                         y;
 441     wxCoord                         vWidth;
 442     wxCoord                         vHeight;
 443
 444     if (M_REGION == 0)
 445         return TRUE;
 446
 447     GetBox( x
 448            ,y
 449            ,vWidth
 450            ,vHeight
 451           );
 452     return ((vWidth == 0) && (vHeight == 0));
 453 } // end of wxRegion::Empty
 454
 455 //-----------------------------------------------------------------------------
 456 // Tests
 457 //-----------------------------------------------------------------------------
 458
 459 //
 460 // Does the region contain the point (x,y)?
 461 wxRegionContain wxRegion::Contains(
 462   wxCoord                           x
 463 , wxCoord                           y
 464 ) const
 465 {
 466     bool                            bOK = FALSE;
 467     POINTL                          vPoint;
 468
 469     vPoint.x = x;
 470     vPoint.y = y;
 471
 472     if (!m_refData)
 473         return wxOutRegion;
 474
 475     LONG                            lInside = ::GpiPtInRegion( ((wxRegionRefData*)m_refData)->m_hPS
 476                                                               ,M_REGION
 477                                                               ,&vPoint
 478                                                              );
 479     if (lInside == PRGN_INSIDE)
 480         return wxInRegion;
 481     return wxOutRegion;
 482 } // end of wxRegion::Contains
 483
 484 //
 485 // Does the region contain the point pt?
 486 //
 487 wxRegionContain wxRegion::Contains(
 488   const wxPoint&                    rPoint
 489 ) const
 490 {
 491     POINTL                          vPoint = { rPoint.x, rPoint.y };
 492
 493     if (!m_refData)
 494         return wxOutRegion;
 495
 496     LONG                            lInside = ::GpiPtInRegion( ((wxRegionRefData*)m_refData)->m_hPS
 497                                                               ,M_REGION
 498                                                               ,&vPoint
 499                                                              );
 500     if (lInside == PRGN_INSIDE)
 501         return wxInRegion;
 502     else
 503         return wxOutRegion;
 504 } // end of wxRegion::Contains
 505
 506 //
 507 // Does the region contain the rectangle (x, y, w, h)?
 508 //
 509 wxRegionContain wxRegion::Contains(
 510   wxCoord                           x
 511 , wxCoord                           y
 512 , wxCoord                           vWidth
 513 , wxCoord                           vHeight
 514 ) const
 515 {
 516     RECTL                           vRect;
 517
 518     if (!m_refData)
 519         return wxOutRegion;
 520
 521     vRect.xLeft   = x;
 522     vRect.yTop    = y;
 523     vRect.xRight  = x + vWidth;
 524     vRect.yBottom = y + vHeight;
 525
 526     if (PRGN_INSIDE == ::GpiRectInRegion( ((wxRegionRefData*)m_refData)->m_hPS
 527                                          ,M_REGION
 528                                          ,&vRect
 529                                         ))
 530         return wxInRegion;
 531     else
 532         return wxOutRegion;
 533 } // end of wxRegion::Contains
 534
 535 //
 536 // Does the region contain the rectangle rect
 537 //
 538 wxRegionContain wxRegion::Contains(
 539   const wxRect&                     rRect
 540 ) const
 541 {
 542     if (!m_refData)
 543         return wxOutRegion;
 544
 545     wxCoord                         x;
 546     wxCoord                         y;
 547     wxCoord                         vWidth;
 548     wxCoord                         vHeight;
 549
 550     x       = rRect.x;
 551     y       = rRect.y;
 552     vWidth  = rRect.GetWidth();
 553     vHeight = rRect.GetHeight();
 554     return Contains( x
 555                     ,y
 556                     ,vWidth
 557                     ,vHeight
 558                    );
 559 } // end of wxRegion::Contains
 560
 561 //
 562 // Get internal region handle
 563 //
 564 WXHRGN wxRegion::GetHRGN() const
 565 {
 566     if (!m_refData)
 567         return (WXHRGN) 0;
 568     return (WXHRGN) M_REGION;
 569 }
 570
 571 //
 572 // Set a new PS, this means we have to recreate the old region in the new
 573 // PS
 574 //
 575 void wxRegion::SetPS(
 576   HPS                               hPS
 577 )
 578 {
 579     RGNRECT                     vRgnData;
 580     PRECTL                      pRect = NULL;
 581
 582     if (::GpiQueryRegionRects( ((wxRegionRefData*)m_refData)->m_hPS
 583                               ,((wxRegionRefData*)m_refData)->m_hRegion
 584                               ,NULL
 585                               ,&vRgnData
 586                               ,NULL
 587                              ))
 588     {
 589         pRect = new RECTL[vRgnData.crcReturned];
 590         vRgnData.crc = vRgnData.crcReturned;
 591         vRgnData.ircStart = 1;
 592         if (::GpiQueryRegionRects( ((wxRegionRefData*)m_refData)->m_hPS
 593                                   ,((wxRegionRefData*)m_refData)->m_hRegion
 594                                   ,NULL
 595                                   ,&vRgnData
 596                                   ,pRect
 597                                  ))
 598         {
 599             //
 600             // First destroy the region out of the old PS
 601             // and then create it in the new and set the new to current
 602             //
 603             ::GpiDestroyRegion( ((wxRegionRefData*)m_refData)->m_hPS
 604                                ,M_REGION
 605                               );
 606             ((wxRegionRefData*)m_refData)->m_hRegion = ::GpiCreateRegion( hPS
 607                                                                          ,vRgnData.crcReturned
 608                                                                          ,pRect
 609                                                                         );
 610             ((wxRegionRefData*)m_refData)->m_hPS = hPS;
 611         }
 612         delete [] pRect;
 613     }
 614 } // end of wxRegion::SetPS
 615
 616 ///////////////////////////////////////////////////////////////////////////////
 617 //                                                                           //
 618 //                             wxRegionIterator                              //
 619 //                                                                           //
 620 ///////////////////////////////////////////////////////////////////////////////
 621
 622 //
 623 // Initialize empty iterator
 624 //
 625 wxRegionIterator::wxRegionIterator()
 626 : m_lCurrent(0)
 627 , m_lNumRects(0)
 628 , m_pRects(NULL)
 629 {
 630 } // end of wxRegionIterator::wxRegionIterator
 631
 632 wxRegionIterator::~wxRegionIterator()
 633 {
 634     if (m_pRects)
 635         delete[] m_pRects;
 636 } // end of wxRegionIterator::~wxRegionIterator
 637
 638 //
 639 // Initialize iterator for region
 640 //
 641 wxRegionIterator::wxRegionIterator(
 642   const wxRegion&                   rRegion
 643 )
 644 {
 645     m_pRects = NULL;
 646     Reset(rRegion);
 647 } // end of wxRegionIterator::wxRegionIterator
 648
 649 //
 650 // Reset iterator for a new /e region.
 651 //
 652 void wxRegionIterator::Reset(
 653   const wxRegion&                   rRegion
 654 )
 655 {
 656     m_lCurrent = 0;
 657     m_vRegion  = rRegion;
 658
 659     if (m_pRects)
 660         delete[] m_pRects;
 661
 662     m_pRects = NULL;
 663
 664     if (m_vRegion.Empty())
 665         m_lNumRects = 0;
 666     else
 667     {
 668         RGNRECT                     vRgnData;
 669         PRECTL                      pRect;
 670
 671         if (::GpiQueryRegionRects( ((wxRegionRefData*)rRegion.m_refData)->m_hPS     // Pres space
 672                                   ,((wxRegionRefData*)rRegion.m_refData)->m_hRegion // Handle of region to query
 673                                   ,NULL                                             // Return all RECTs
 674                                   ,&vRgnData                                        // Will contain number or RECTs in region
 675                                   ,NULL                                             // NULL to return number of RECTs
 676                                  ))
 677         {
 678             pRect = new RECTL[vRgnData.crcReturned];
 679             m_pRects = new wxRect[vRgnData.crcReturned];
 680             vRgnData.crc = vRgnData.crcReturned;
 681             m_lNumRects = vRgnData.crcReturned;
 682             vRgnData.ircStart = 1;
 683             if (::GpiQueryRegionRects( ((wxRegionRefData*)rRegion.m_refData)->m_hPS     // Pres space of source
 684                                       ,((wxRegionRefData*)rRegion.m_refData)->m_hRegion // Handle of source region
 685                                       ,NULL                                             // Return all RECTs
 686                                       ,&vRgnData                                        // Operations set to return rects
 687                                       ,pRect                                            // Will contain the actual RECTS
 688                                      ))
 689             {
 690                 M_REGION = ::GpiCreateRegion( ((wxRegionRefData*)rRegion.m_refData)->m_hPS
 691                                              ,vRgnData.crcReturned
 692                                              ,pRect
 693                                             );
 694                 for( LONG i = 0; i < m_lNumRects; i++)
 695                 {
 696                     m_pRects[i].x      = pRect[i].xLeft;
 697                     m_pRects[i].width  = pRect[i].xRight - pRect[i].xLeft;
 698                     m_pRects[i].y      = pRect[i].yBottom;
 699                     m_pRects[i].height = pRect[i].yTop - pRect[i].yBottom;
 700                 }
 701                 ((wxRegionRefData*)m_refData)->m_hPS = ((wxRegionRefData*)rRegion.m_refData)->m_hPS;
 702             }
 703         }
 704     }
 705 } // end of wxRegionIterator::Reset
 706
 707 //
 708 // Increment iterator. The rectangle returned is the one after the
 709 // incrementation.
 710 //
 711 void wxRegionIterator::operator++ ()
 712 {
 713     if (m_lCurrent < m_lNumRects)
 714         ++m_lCurrent;
 715 } // end of wxRegionIterator::operator ++
 716
 717 //
 718 // Increment iterator. The rectangle returned is the one before the
 719 // incrementation.
 720 //
 721 void wxRegionIterator::operator++ (int)
 722 {
 723     if (m_lCurrent < m_lNumRects)
 724         ++m_lCurrent;
 725 } // end of wxRegionIterator::operator++
 726
 727 wxCoord wxRegionIterator::GetX() const
 728 {
 729     if (m_lCurrent < m_lNumRects)
 730         return m_pRects[m_lCurrent].x;
 731     return 0L;
 732 } // end of wxRegionIterator::GetX
 733
 734 wxCoord wxRegionIterator::GetY() const
 735 {
 736     if (m_lCurrent < m_lNumRects)
 737         return m_pRects[m_lCurrent].y;
 738     return 0L;
 739 } // end of wxRegionIterator::GetY
 740
 741 wxCoord wxRegionIterator::GetW() const
 742 {
 743     if (m_lCurrent < m_lNumRects)
 744         return m_pRects[m_lCurrent].width ;
 745     return 0L;
 746 } // end of wxRegionIterator::GetW
 747
 748 wxCoord wxRegionIterator::GetH() const
 749 {
 750     if (m_lCurrent < m_lNumRects)
 751         return m_pRects[m_lCurrent].height;
 752     return 0L;
 753 } // end of wxRegionIterator::GetH
 754