src/os2/region.cpp

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