]> git.saurik.com Git - wxWidgets.git/blobdiff - src/os2/bitmap.cpp
Documentation fixes, patch 1179223 by Andreas Mohr
[wxWidgets.git] / src / os2 / bitmap.cpp
index 5ffef72a4bf0fa759aee962173723f42d98a379a..9d81414df6f7f150183a2d461e298f82d3670ce9 100644 (file)
@@ -33,6 +33,7 @@
 
 //#include "wx/msw/dib.h"
 #include "wx/image.h"
+#include "wx/xpmdecod.h"
 
 // ----------------------------------------------------------------------------
 // macros
@@ -57,24 +58,28 @@ wxBitmapRefData::wxBitmapRefData()
     m_pSelectedInto = NULL;
     m_nNumColors    = 0;
     m_pBitmapMask   = NULL;
-}
+    m_hBitmap       = (WXHBITMAP) NULL;
+} // end of wxBitmapRefData::wxBitmapRefData
 
 void wxBitmapRefData::Free()
 {
-    wxASSERT_MSG( !m_pSelectedInto,
-                  wxT("deleting bitmap still selected into wxMemoryDC") );
-
+    if ( m_pSelectedInto )
+    {
+        wxLogLastError("GpiDeleteBitmap(hbitmap)");
+    }
     if (m_hBitmap)
     {
-        if ( !::GpiDeleteBitmap((HBITMAP)m_hBitmap) )
+        if (!::GpiDeleteBitmap((HBITMAP)m_hBitmap))
         {
             wxLogLastError("GpiDeleteBitmap(hbitmap)");
         }
     }
-
-    delete m_pBitmapMask;
-    m_pBitmapMask = NULL;
-}
+    if (m_pBitmapMask)
+    {
+        delete m_pBitmapMask;
+        m_pBitmapMask = NULL;
+    }
+} // end of wxBitmapRefData::Free
 
 // ----------------------------------------------------------------------------
 // wxBitmap creation
@@ -83,33 +88,44 @@ void wxBitmapRefData::Free()
 // this function should be called from all wxBitmap ctors
 void wxBitmap::Init()
 {
-    // m_refData = NULL; done in the base class ctor
-
-    if (wxTheBitmapList)
-        wxTheBitmapList->AddBitmap(this);
-}
+    m_bIsMono = FALSE;
+    //
+    // True for all bitmaps created from bits, wxImages, Xpms
+    //
+} // end of wxBitmap::Init
 
 bool wxBitmap::CopyFromIconOrCursor(
   const wxGDIImage&                 rIcon
 )
 {
+    HPOINTER                        hIcon = (HPOINTER)rIcon.GetHandle();
+    POINTERINFO                     SIconInfo;
+
+    if (!::WinQueryPointerInfo(hIcon, &SIconInfo))
+    {
+        wxLogLastError(wxT("WinQueryPointerInfo"));
+        return FALSE;
+    }
     wxBitmapRefData*                pRefData = new wxBitmapRefData;
 
     m_refData = pRefData;
 
-    pRefData->m_nWidth = rIcon.GetWidth();
-    pRefData->m_nHeight = rIcon.GetHeight();
-    pRefData->m_nDepth = wxDisplayDepth();
+    int                             nWidth = rIcon.GetWidth();
+    int                             nHeight = rIcon.GetHeight();
+
+    pRefData->m_nWidth  = nWidth;
+    pRefData->m_nHeight = nHeight;
+    pRefData->m_nDepth  = wxDisplayDepth();
+
+    pRefData->m_hBitmap = (WXHBITMAP)SIconInfo.hbmColor;
+
+    wxMask*                         pMask = new wxMask(SIconInfo.hbmPointer);
 
-    pRefData->m_hBitmap = (WXHBITMAP)rIcon.GetHandle();
-    // no mask???
-    pRefData->m_pBitmapMask = new wxMask();
+    pMask->SetMaskBitmap(GetHBITMAP());
+    SetMask(pMask);
 
-#if WXWIN_COMPATIBILITY_2
-    pRefData->m_bOk = TRUE;
-#endif // WXWIN_COMPATIBILITY_2
     return(TRUE);
-}
+} // end of wxBitmap::CopyFromIconOrCursor
 
 bool wxBitmap::CopyFromCursor(
   const wxCursor&                   rCursor
@@ -120,7 +136,7 @@ bool wxBitmap::CopyFromCursor(
     if (!rCursor.Ok())
         return(FALSE);
     return(CopyFromIconOrCursor(rCursor));
-}
+} // end of wxBitmap::CopyFromCursor
 
 bool wxBitmap::CopyFromIcon(
   const wxIcon&                     rIcon
@@ -131,24 +147,18 @@ bool wxBitmap::CopyFromIcon(
     if (!rIcon.Ok())
         return(FALSE);
 
-#if WXWIN_COMPATIBILITY_2
-    refData->m_ok = TRUE;
-#endif // WXWIN_COMPATIBILITY_2
-
     return CopyFromIconOrCursor(rIcon);
-}
+} // end of wxBitmap::CopyFromIcon
 
 wxBitmap::~wxBitmap()
 {
-    if (wxTheBitmapList)
-        wxTheBitmapList->DeleteObject(this);
-}
+} // end of wxBitmap::~wxBitmap
 
 wxBitmap::wxBitmap(
   const char                        zBits[]
-, int                               nTheWidth
-, int                               nTheHeight
-, int                               nNoBits
+, int                               nWidth
+, int                               nHeight
+, int                               nDepth
 )
 {
     Init();
@@ -160,65 +170,98 @@ wxBitmap::wxBitmap(
     HPS                             hPs;
     DEVOPENSTRUC                    vDop = { NULL, "DISPLAY", NULL, NULL, NULL, NULL, NULL, NULL, NULL };
     SIZEL                           vSize = {0, 0};
+    char*                           pzData;
 
     wxASSERT(vHabmain != NULL);
 
-    hDc = ::DevOpenDC(vHabmain, OD_MEMORY, (PSZ)"*", 1L, (PDEVOPENDATA)&vDop, 0L);
+    m_refData = pRefData;
 
-    vHeader.cbFix           = sizeof(vHeader);
-    vHeader.cx              = (USHORT)nTheWidth;
-    vHeader.cy              = (USHORT)nTheHeight;
-    vHeader.cPlanes         = 1L;
-    vHeader.cBitCount       = nNoBits;
-    vHeader.ulCompression   = BCA_UNCOMP;
-    vHeader.cxResolution    = 0;
-    vHeader.cyResolution    = 0;
-    vHeader.cclrUsed        = 0;
-    vHeader.cclrImportant   = 0;
-    vHeader.usUnits         = BRU_METRIC;
-    vHeader.usRecording     = BRA_BOTTOMUP;
-    vHeader.usRendering     = BRH_NOTHALFTONED;
-    vHeader.cSize1          = 0;
-    vHeader.cSize2          = 0;
-    vHeader.ulColorEncoding = 0;
-    vHeader.ulIdentifier    = 0;
+    pRefData->m_nWidth        = nWidth;
+    pRefData->m_nHeight       = nHeight;
+    pRefData->m_nDepth        = nDepth;
+    pRefData->m_nNumColors    = 0;
+    pRefData->m_pSelectedInto = NULL;
 
+    hDc   = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
     hPs = ::GpiCreatePS(vHabmain, hDc, &vSize, GPIA_ASSOC | PU_PELS);
     if (hPs == 0)
     {
         wxLogLastError("GpiCreatePS Failure");
     }
 
-    m_refData = pRefData;
+    if (nDepth == 1)
+    {
+        //
+        // We assume that it is in XBM format which is not quite the same as
+        // the format CreateBitmap() wants because the order of bytes in the
+        // line is inversed!
+        //
+        const size_t                nBytesPerLine = (nWidth + 7) / 8;
+        const size_t                nPadding = nBytesPerLine % 2;
+        const size_t                nLen = nHeight * (nPadding + nBytesPerLine);
+        const char*                 pzSrc = zBits;
+        int                         nRows;
+        size_t                      nCols;
+
+        pzData = (char *)malloc(nLen);
+
+        char*                       pzDst = pzData;
+
+        for (nRows = 0; nRows < nHeight; nRows++)
+        {
+            for (nCols = 0; nCols < nBytesPerLine; nCols++)
+            {
+                unsigned char       ucVal = *pzSrc++;
+                unsigned char       ucReversed = 0;
+                int                 nBits;
+
+                for (nBits = 0; nBits < 8; nBits++)
+                {
+                    ucReversed <<= 1;
+                    ucReversed |= (ucVal & 0x01);
+                    ucVal >>= 1;
+                }
+                *pzDst++ = ucReversed;
+            }
+            if (nPadding)
+                *pzDst++ = 0;
+        }
+    }
+    else
+    {
+        //
+        // Bits should already be in Windows standard format
+        //
+        pzData = (char *)zBits;    // const_cast is harmless
+    }
 
-    pRefData->m_nWidth = nTheWidth;
-    pRefData->m_nHeight = nTheHeight;
-    pRefData->m_nDepth = nNoBits;
-    pRefData->m_nNumColors = 0;
-    pRefData->m_pSelectedInto = NULL;
+    if (nDepth > 24)
+        nDepth = 24; // MAX supported in PM
+    memset(&vHeader, '\0', 16);
+    vHeader.cbFix           = 16;
+    vHeader.cx              = (USHORT)nWidth;
+    vHeader.cy              = (USHORT)nHeight;
+    vHeader.cPlanes         = 1L;
+    vHeader.cBitCount       = nDepth;
+    vHeader.usReserved      = 0;
+
+    memset(&vInfo, '\0', 16);
+    vInfo.cbFix           = 16;
+    vInfo.cx              = (USHORT)nWidth;
+    vInfo.cy              = (USHORT)nHeight;
+    vInfo.cPlanes         = 1L;
+    vInfo.cBitCount       = nDepth;
+
+    HBITMAP                         hBmp = ::GpiCreateBitmap(hPs, &vHeader, CBM_INIT, (PBYTE)pzData, &vInfo);
 
-    HBITMAP hBmp = ::GpiCreateBitmap(hPs, &vHeader, 0L, NULL, &vInfo);
     if (!hBmp)
     {
         wxLogLastError("CreateBitmap");
     }
+    ::GpiDestroyPS(hPs);
+    ::DevCloseDC(hDc);
     SetHBITMAP((WXHBITMAP)hBmp);
-}
-
-// Create from XPM data
-wxBitmap::wxBitmap(
-  char**                            ppData
-, wxControl*                        WXUNUSED(pAnItem))
-{
-    Init();
-
-    (void)Create( (void *)ppData
-                 ,wxBITMAP_TYPE_XPM_DATA
-                 ,0
-                 ,0
-                 ,0
-                );
-}
+} // end of wxBitmap::wxBitmap
 
 wxBitmap::wxBitmap(
   int                               nW
@@ -227,12 +270,11 @@ wxBitmap::wxBitmap(
 )
 {
     Init();
-
     (void)Create( nW
                  ,nH
                  ,nD
                 );
-}
+} // end of wxBitmap::wxBitmap
 
 wxBitmap::wxBitmap(
   void*                             pData
@@ -250,19 +292,19 @@ wxBitmap::wxBitmap(
                  ,nHeight
                  ,nDepth
                 );
-}
+} // end of wxBitmap::wxBitmap
 
 wxBitmap::wxBitmap(
-  const wxString&                   rFilename
+  int                               nId
 , long                              lType
 )
 {
     Init();
-
-    LoadFile( rFilename
+    LoadFile( nId
              ,(int)lType
             );
-}
+    SetId(nId);
+} // end of wxBitmap::wxBitmap
 
 bool wxBitmap::Create(
   int                               nW
@@ -272,80 +314,104 @@ bool wxBitmap::Create(
 {
     HBITMAP                         hBmp;
     BITMAPINFOHEADER2               vHeader;
-    BITMAPINFO2                     vInfo;
-    HPS                             hpsScreen;
-    HDC                             hdcScreen;
-    DEVOPENSTRUC                    vDop = { NULL, "DISPLAY", NULL, NULL, NULL, NULL, NULL, NULL, NULL };
-    SIZEL                           vSize = {0, 0};
-    LONG                            lBitCount;
 
     wxASSERT(vHabmain != NULL);
-
-    hpsScreen = ::WinGetScreenPS(HWND_DESKTOP);
-    hdcScreen = ::GpiQueryDevice(hpsScreen);
-    ::DevQueryCaps(hdcScreen, CAPS_COLOR_BITCOUNT, 1L, &lBitCount);
-
-    vHeader.cbFix           = sizeof(vHeader);
-    vHeader.cx              = (USHORT)nW;
-    vHeader.cy              = (USHORT)nH;
-    vHeader.cPlanes         = (USHORT)nD;
-    vHeader.cBitCount       = lBitCount;
-    vHeader.ulCompression   = BCA_UNCOMP;
-    vHeader.cxResolution    = 0;
-    vHeader.cyResolution    = 0;
-    vHeader.cclrUsed        = 0;
-    vHeader.cclrImportant   = 0;
-    vHeader.usUnits         = BRU_METRIC;
-    vHeader.usRecording     = BRA_BOTTOMUP;
-    vHeader.usRendering     = BRH_NOTHALFTONED;
-    vHeader.cSize1          = 0;
-    vHeader.cSize2          = 0;
-    vHeader.ulColorEncoding = 0;
-    vHeader.ulIdentifier    = 0;
-
     UnRef();
     m_refData = new wxBitmapRefData;
-
     GetBitmapData()->m_nWidth = nW;
     GetBitmapData()->m_nHeight = nH;
     GetBitmapData()->m_nDepth = nD;
 
+    //
+    // Xpms and bitmaps from other images can also be mono's, but only
+    // mono's need help changing their colors with MemDC changes
+    //
     if (nD > 0)
     {
-        hBmp = ::GpiCreateBitmap(hpsScreen, &vHeader, 0L, NULL, &vInfo);
-        if (!hBmp)
-        {
-            wxLogLastError("CreateBitmap");
-        }
+        DEVOPENSTRUC                vDop  = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
+        SIZEL                       vSize = {0, 0};
+        HDC                         hDC   = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
+        HPS                         hPS   = ::GpiCreatePS(vHabmain, hDC, &vSize, PU_PELS | GPIA_ASSOC);
+
+        if (nD == 1)
+            m_bIsMono = TRUE;
+        memset(&vHeader, '\0', 16);
+        vHeader.cbFix     =  16;
+        vHeader.cx        = nW;
+        vHeader.cy        = nH;
+        vHeader.cPlanes   = 1;
+        vHeader.cBitCount = 24; //nD;
+
+        hBmp = ::GpiCreateBitmap( hPS
+                                 ,&vHeader
+                                 ,0L
+                                 ,NULL
+                                 ,NULL
+                                );
+        ::GpiDestroyPS(hPS);
+        ::DevCloseDC(hDC);
     }
     else
     {
-        LONG                            lPlanes;
+        HPS                             hPSScreen;
+        HDC                             hDCScreen;
+        LONG                            lBitCount;
+
+        hPSScreen = ::WinGetScreenPS(HWND_DESKTOP);
+        hDCScreen = ::GpiQueryDevice(hPSScreen);
+        ::DevQueryCaps(hDCScreen, CAPS_COLOR_BITCOUNT, 1L, &lBitCount);
+
+        if (lBitCount > 24)
+            lBitCount = 24;
+
+        memset(&vHeader, '\0', 16);
+        vHeader.cbFix     =  16;
+        vHeader.cx        = nW;
+        vHeader.cy        = nH;
+        vHeader.cPlanes   = 1;
+        vHeader.cBitCount = lBitCount;
+
+        hBmp = ::GpiCreateBitmap( hPSScreen
+                                 ,&vHeader
+                                 ,0L
+                                 ,NULL
+                                 ,NULL
+                                );
 
-        ::DevQueryCaps(hdcScreen, CAPS_COLOR_PLANES, 1L, &lPlanes);
-        hBmp = ::GpiCreateBitmap(hpsScreen, &vHeader, 0L, NULL, &vInfo);
-        if (!hBmp)
-        {
-            wxLogLastError("CreateBitmap");
-        }
         GetBitmapData()->m_nDepth = wxDisplayDepth();
+        ::WinReleasePS(hPSScreen);
     }
     SetHBITMAP((WXHBITMAP)hBmp);
 
-#if WXWIN_COMPATIBILITY_2
-    GetBitmapData()->m_bOk = hBmp != 0;
-#endif // WXWIN_COMPATIBILITY_2
-
     return Ok();
-}
+} // end of wxBitmap::Create
+
+bool wxBitmap::CreateFromXpm(
+  const char**                      ppData
+)
+{
+#if wxUSE_IMAGE && wxUSE_XPM
+    Init();
+
+    wxCHECK_MSG(ppData != NULL, FALSE, wxT("invalid bitmap data"))
+
+    wxXPMDecoder                    vDecoder;
+    wxImage                         vImg = vDecoder.ReadData(ppData);
+
+    wxCHECK_MSG(vImg.Ok(), FALSE, wxT("invalid bitmap data"))
+
+    *this = wxBitmap(vImg);
+    return TRUE;
+#else
+    return FALSE;
+#endif
+} // end of wxBitmap::CreateFromXpm
 
 bool wxBitmap::LoadFile(
-  const wxString&                   rFilename
+  int                               nId
 , long                              lType
 )
 {
-    HPS                             hPs = NULLHANDLE;
-
     UnRef();
 
     wxBitmapHandler*                pHandler = wxDynamicCast( FindHandler(lType)
@@ -357,8 +423,7 @@ bool wxBitmap::LoadFile(
         m_refData = new wxBitmapRefData;
 
         return(pHandler->LoadFile( this
-                                  ,rFilename
-                                  ,hPs
+                                  ,nId
                                   ,lType
                                   , -1
                                   , -1
@@ -366,16 +431,9 @@ bool wxBitmap::LoadFile(
     }
     else
     {
-        wxImage                     vImage;
-
-        if (!vImage.LoadFile(rFilename, lType) || !vImage.Ok() )
-            return(FALSE);
-
-        *this = vImage.ConvertToBitmap();
-
-        return(TRUE);
+        return(FALSE);
     }
-}
+} // end of wxBitmap::LoadFile
 
 bool wxBitmap::Create(
   void*                             pData
@@ -393,8 +451,7 @@ bool wxBitmap::Create(
 
     if (!pHandler)
     {
-        wxLogDebug(wxT("Failed to create bitmap: no bitmap handler for "
-                       "type %d defined."), lType);
+        wxLogDebug(wxT("Failed to create bitmap: no bitmap handler for type %ld defined."), lType);
 
         return(FALSE);
     }
@@ -408,7 +465,7 @@ bool wxBitmap::Create(
                             ,nHeight
                             ,nDepth
                            ));
-}
+} // end of wxBitmap::Create
 
 bool wxBitmap::SaveFile(
   const wxString&                   rFilename
@@ -431,7 +488,7 @@ bool wxBitmap::SaveFile(
     else
     {
         // FIXME what about palette? shouldn't we use it?
-        wxImage                     vImage(*this);
+        wxImage                     vImage = ConvertToImage();
 
         if (!vImage.Ok())
             return(FALSE);
@@ -440,31 +497,671 @@ bool wxBitmap::SaveFile(
                                ,lType
                               ));
     }
-}
+} // end of wxBitmap::SaveFile
+
 
 // ----------------------------------------------------------------------------
-// wxBitmap accessors
+// wxImage-wxBitmap conversion
 // ----------------------------------------------------------------------------
 
-void wxBitmap::SetQuality(
-  int                               nQ
+bool wxBitmap::CreateFromImage (
+  const wxImage&                    rImage
+, int                               nDepth
 )
 {
-    EnsureHasData();
+    wxCHECK_MSG(rImage.Ok(), FALSE, wxT("invalid image"));
+    m_refData = new wxBitmapRefData();
+
+    int                             nSizeLimit = 1024 * 768 * 3;
+    int                             nWidth = rImage.GetWidth();
+    int                             nBmpHeight = rImage.GetHeight();
+    int                             nBytePerLine = nWidth * 3;
+    int                             nSizeDWORD = sizeof(DWORD);
+    int                             nLineBoundary = nBytePerLine % nSizeDWORD;
+    int                             nPadding = 0;
+
+    if (nLineBoundary > 0)
+    {
+        nPadding = nSizeDWORD - nLineBoundary;
+        nBytePerLine += nPadding;
+    }
 
-    GetBitmapData()->m_nQuality = nQ;
-}
+    //
+    // Calc the number of DIBs and heights of DIBs
+    //
+    int                             nNumDIB = 1;
+    int                             nHRemain = 0;
+    int                             nHeight = nSizeLimit / nBytePerLine;
+
+    if (nHeight >= nBmpHeight)
+        nHeight = nBmpHeight;
+    else
+    {
+        nNumDIB  = nBmpHeight / nHeight;
+        nHRemain = nBmpHeight % nHeight;
+        if (nHRemain > 0)
+            nNumDIB++;
+    }
+
+    //
+    // Set bitmap parameters
+    //
+    wxCHECK_MSG(rImage.Ok(), FALSE, wxT("invalid image"));
+    SetWidth(nWidth);
+    SetHeight(nBmpHeight);
+    if (nDepth == 1)
+        m_bIsMono = TRUE;
+    else
+        m_bIsMono = FALSE;
+    if (nDepth == -1)
+        nDepth = wxDisplayDepth();
+    SetDepth(nDepth);
+
+#if wxUSE_PALETTE
+    //
+    // Copy the palette from the source image
+    //
+    SetPalette(rImage.GetPalette());
+#endif // wxUSE_PALETTE
+
+    //
+    // Create a DIB header
+    //
+    BITMAPINFOHEADER2               vHeader;
+    BITMAPINFO2                     vInfo;
+
+    //
+    // Fill in the DIB header
+    //
+    memset(&vHeader, '\0', 16);
+    vHeader.cbFix           = 16;
+    vHeader.cx              = (ULONG)nWidth;
+    vHeader.cy              = (ULONG)nHeight;
+    vHeader.cPlanes         = 1L;
+    vHeader.cBitCount       = 24;
+
+    //
+    // Memory for DIB data
+    //
+    unsigned char*                  pucBits;
 
-#if WXWIN_COMPATIBILITY_2
-void wxBitmap::SetOk(
-  bool                              bOk
+    pucBits = (unsigned char *)malloc(nBytePerLine * nHeight);
+    if(!pucBits)
+    {
+        wxFAIL_MSG(wxT("could not allocate memory for DIB"));
+        return FALSE;
+    }
+    memset(pucBits, '\0', (nBytePerLine * nHeight));
+
+    //
+    // Create and set the device-dependent bitmap
+    //
+    DEVOPENSTRUC                    vDop  = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
+    SIZEL                           vSize = {0, 0};
+    HDC                             hDC   = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
+    HPS                             hPS   = ::GpiCreatePS(vHabmain, hDC, &vSize, PU_PELS | GPIA_ASSOC);
+    LONG                            lScans;
+    HDC                             hDCScreen = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
+    HPS                             hPSScreen;
+    HBITMAP                         hBmp;
+    HBITMAP                         hBmpOld;
+
+    memset(&vInfo, '\0', 16);
+    vInfo.cbFix           = 16;
+    vInfo.cx              = (ULONG)nWidth;
+    vInfo.cy              = (ULONG)nHeight;
+    vInfo.cPlanes         = 1;
+    vInfo.cBitCount       = 24; // Set to desired count going in
+
+    hBmp = ::GpiCreateBitmap( hPS
+                             ,&vHeader
+                             ,0L
+                             ,NULL
+                             ,NULL
+                            );
+#if wxUSE_PALETTE
+    HPAL                            hOldPalette = NULLHANDLE;
+    if (rImage.GetPalette().Ok())
+    {
+        hOldPalette = ::GpiSelectPalette(hPS, (HPAL)rImage.GetPalette().GetHPALETTE());
+    }
+#endif // wxUSE_PALETTE
+
+    //
+    // Copy image data into DIB data and then into DDB (in a loop)
+    //
+    unsigned char*                  pData = rImage.GetData();
+    int                             i;
+    int                             j;
+    int                             n;
+    int                             nOrigin = 0;
+    unsigned char*                  ptdata = pData;
+    unsigned char*                  ptbits;
+
+    if ((hBmpOld = ::GpiSetBitmap(hPS, hBmp)) == HBM_ERROR)
+    {
+        ERRORID                 vError;
+        wxString                sError;
+
+        vError = ::WinGetLastError(vHabmain);
+        sError = wxPMErrorToStr(vError);
+    }
+    for (n = 0; n < nNumDIB; n++)
+    {
+        if (nNumDIB > 1 && n == nNumDIB - 1 && nHRemain > 0)
+        {
+            //
+            // Redefine height and size of the (possibly) last smaller DIB
+            // memory is not reallocated
+            //
+            nHeight         = nHRemain;
+            vHeader.cy      = (DWORD)(nHeight);
+            vHeader.cbImage = nBytePerLine * nHeight;
+        }
+        ptbits = pucBits;
+        for (j = 0; j < nHeight; j++)
+        {
+            for (i = 0; i < nWidth; i++)
+            {
+                *(ptbits++) = *(ptdata + 2);
+                *(ptbits++) = *(ptdata + 1);
+                *(ptbits++) = *(ptdata);
+                ptdata += 3;
+            }
+            for (i = 0; i < nPadding; i++)
+                *(ptbits++) = 0;
+        }
+
+        //
+        // Have to do something similar to WIN32's StretchDIBits, use GpiBitBlt
+        // in combination with setting the bits into the selected bitmap
+        //
+        if ((lScans = ::GpiSetBitmapBits( hPS
+                                         ,0             // Start at the bottom
+                                         ,(LONG)nHeight // One line per scan
+                                         ,(PBYTE)pucBits
+                                         ,&vInfo
+                                       )) == GPI_ALTERROR)
+        {
+            ERRORID                 vError;
+            wxString                sError;
+
+            vError = ::WinGetLastError(vHabmain);
+            sError = wxPMErrorToStr(vError);
+        }
+        hPSScreen = ::GpiCreatePS( vHabmain
+                                  ,hDCScreen
+                                  ,&vSize
+                                  ,PU_PELS | GPIA_ASSOC
+                                 );
+
+        POINTL                      vPoint[4] = { {0, nOrigin},
+                                                  {nWidth, nHeight},
+                                                  {0, 0}, {nWidth, nHeight}
+                                                };
+
+
+        ::GpiBitBlt( hPSScreen
+                    ,hPS
+                    ,4
+                    ,vPoint
+                    ,ROP_SRCCOPY
+                    ,BBO_IGNORE
+                   );
+        ::GpiDestroyPS(hPSScreen);
+        nOrigin += nHeight;
+    }
+    SetHBITMAP((WXHBITMAP)hBmp);
+#if wxUSE_PALETTE
+    if (hOldPalette)
+        ::GpiSelectPalette(hPS, hOldPalette);
+#endif // wxUSE_PALETTE
+
+    //
+    // Similarly, created an mono-bitmap for the possible mask
+    //
+    if (rImage.HasMask())
+    {
+        vHeader.cbFix     = 16;
+        vHeader.cx        = nWidth;
+        vHeader.cy        = nHeight;
+        vHeader.cPlanes   = 1;
+        vHeader.cBitCount = 24;
+        hBmp = ::GpiCreateBitmap( hPS
+                                 ,&vHeader
+                                 ,0L
+                                 ,NULL
+                                 ,NULL
+                                );
+        hBmpOld = ::GpiSetBitmap(hPS, hBmp);
+        if (nNumDIB == 1)
+            nHeight = nBmpHeight;
+        else
+            nHeight = nSizeLimit / nBytePerLine;
+        vHeader.cy = (DWORD)(nHeight);
+        nOrigin = 0;
+
+        unsigned char               cRed   = rImage.GetMaskRed();
+        unsigned char               cGreen = rImage.GetMaskGreen();
+        unsigned char               cBlue  = rImage.GetMaskBlue();
+        unsigned char               cZero = 0;
+        unsigned char               cOne = 255;
+
+        ptdata = pData;
+        for (n = 0; n < nNumDIB; n++)
+        {
+            if (nNumDIB > 1 && n == nNumDIB - 1 && nHRemain > 0)
+            {
+                //
+                // Redefine height and size of the (possibly) last smaller DIB
+                // memory is not reallocated
+                //
+                nHeight         = nHRemain;
+                vHeader.cy      = (DWORD)(nHeight);
+                vHeader.cbImage = nBytePerLine * nHeight;
+            }
+            ptbits = pucBits;
+            for (int j = 0; j < nHeight; j++)
+            {
+                for (i = 0; i < nWidth; i++)
+                {
+                    unsigned char cRedImage   = (*(ptdata++)) ;
+                    unsigned char cGreenImage = (*(ptdata++)) ;
+                    unsigned char cBlueImage  = (*(ptdata++)) ;
+
+                    if ((cRedImage != cRed) || (cGreenImage != cGreen) || (cBlueImage != cBlue))
+                    {
+                        *(ptbits++) = cOne;
+                        *(ptbits++) = cOne;
+                        *(ptbits++) = cOne;
+                    }
+                    else
+                    {
+                        *(ptbits++) = cZero;
+                        *(ptbits++) = cZero;
+                        *(ptbits++) = cZero;
+                    }
+                }
+                for (i = 0; i < nPadding; i++)
+                    *(ptbits++) = cZero;
+            }
+            lScans = ::GpiSetBitmapBits( hPS
+                                        ,0              // Start at the bottom
+                                        ,(LONG)nHeight // One line per scan
+                                        ,(PBYTE)pucBits
+                                        ,&vInfo
+                                       );
+            hPSScreen = ::GpiCreatePS( vHabmain
+                                      ,hDCScreen
+                                      ,&vSize
+                                      ,PU_PELS | GPIA_ASSOC
+                                     );
+            POINTL vPoint2[4] = { {0, nOrigin},
+                                  {nWidth, nHeight},
+                                  {0, 0}, {nWidth, nHeight}
+                                };
+            ::GpiBitBlt( hPSScreen
+                        ,hPS
+                        ,4
+                        ,vPoint2
+                        ,ROP_SRCCOPY
+                        ,BBO_IGNORE
+                   );
+            ::GpiDestroyPS(hPSScreen);
+            nOrigin += nHeight;
+        }
+
+        //
+        // Create a wxMask object
+        //
+        wxMask*                     pMask = new wxMask();
+
+        pMask->SetMaskBitmap((WXHBITMAP)hBmp);
+        SetMask(pMask);
+        hBmpOld = ::GpiSetBitmap(hPS, hBmpOld);
+    }
+
+    //
+    // Free allocated resources
+    //
+    ::GpiSetBitmap(hPS, NULLHANDLE);
+    ::GpiDestroyPS(hPS);
+    ::DevCloseDC(hDCScreen);
+    ::DevCloseDC(hDC);
+    free(pucBits);
+    return TRUE;
+} // end of wxBitmap::CreateFromImage
+
+wxImage wxBitmap::ConvertToImage() const
+{
+    wxImage                         vImage;
+    wxDC*                           pDC;
+
+    wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") );
+
+    //
+    // Create an wxImage object
+    //
+    int                             nWidth        = GetWidth();
+    int                             nHeight       = GetHeight();
+    int                             nDevWidth;
+    int                             nDevHeight;
+    int                             nBytePerLine  = nWidth * 3;
+    int                             nSizeDWORD    = sizeof(DWORD);
+    int                             nLineBoundary = nBytePerLine % nSizeDWORD;
+    int                             nPadding = 0;
+    unsigned char*                  pData;
+    unsigned char*                  lpBits;
+    long                            lScans;
+    BITMAPINFOHEADER2               vDIBh;
+    BITMAPINFO2                     vDIBInfo;
+    HPS                             hPSMem;
+    HBITMAP                         hBitmap;
+    HBITMAP                         hOldBitmap;
+    DEVOPENSTRUC                    vDop  = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
+    SIZEL                           vSizlPage = {0,0};
+    HDC                             hDCMem;
+
+    vImage.Create( nWidth
+                  ,nHeight
+                 );
+    pData = vImage.GetData();
+    if(!pData)
+    {
+        wxFAIL_MSG( wxT("could not allocate data for image") );
+        return wxNullImage;
+    }
+    if(nLineBoundary > 0)
+    {
+        nPadding     = nSizeDWORD - nLineBoundary;
+        nBytePerLine += nPadding;
+    }
+    wxDisplaySize( &nDevWidth
+                  ,&nDevHeight
+                 );
+    //
+    // Create and fill a DIB header
+    //
+    memset(&vDIBh, '\0', 16);
+    vDIBh.cbFix     =  16;
+    vDIBh.cx        = nWidth;
+    vDIBh.cy        = nHeight;
+    vDIBh.cPlanes   = 1;
+    vDIBh.cBitCount = 24;
+
+    memset(&vDIBInfo, '\0', 16);
+    vDIBInfo.cbFix           = 16;
+    vDIBInfo.cx              = nWidth;
+    vDIBInfo.cy              = nHeight;
+    vDIBInfo.cPlanes         = 1;
+    vDIBInfo.cBitCount       = 24;
+
+    lpBits = (unsigned char *)malloc(nBytePerLine * nHeight);
+    if (!lpBits)
+    {
+        wxFAIL_MSG(wxT("could not allocate data for DIB"));
+        free(pData);
+        return wxNullImage;
+    }
+    memset(lpBits, '\0', (nBytePerLine * nHeight));
+    hBitmap = (HBITMAP)GetHBITMAP();
+
+    //
+    // May already be selected into a PS
+    //
+    if ((pDC = GetSelectedInto()) != NULL)
+    {
+        hPSMem = pDC->GetHPS();
+    }
+    else
+    {
+        hDCMem = ::DevOpenDC( vHabmain
+                             ,OD_MEMORY
+                             ,"*"
+                             ,5L
+                             ,(PDEVOPENDATA)&vDop
+                             ,NULLHANDLE
+                            );
+        hPSMem = ::GpiCreatePS( vHabmain
+                               ,hDCMem
+                               ,&vSizlPage
+                               ,PU_PELS | GPIA_ASSOC
+                              );
+    }
+    if ((hOldBitmap = ::GpiSetBitmap(hPSMem, hBitmap)) == HBM_ERROR)
+    {
+        ERRORID                 vError;
+        wxString                sError;
+
+        vError = ::WinGetLastError(vHabmain);
+        sError = wxPMErrorToStr(vError);
+    }
+
+    //
+    // Copy data from the device-dependent bitmap to the DIB
+    //
+    if ((lScans = ::GpiQueryBitmapBits( hPSMem
+                                       ,0L
+                                       ,(LONG)nHeight
+                                       ,(PBYTE)lpBits
+                                       ,&vDIBInfo
+                                      )) == GPI_ALTERROR)
+    {
+        ERRORID                     vError;
+        wxString                    sError;
+
+        vError = ::WinGetLastError(vHabmain);
+        sError = wxPMErrorToStr(vError);
+    }
+
+    //
+    // Copy DIB data into the wxImage object
+    //
+    int                             i;
+    int                             j;
+    unsigned char*                  ptdata = pData;
+    unsigned char*                  ptbits = lpBits;
+
+    for (i = 0; i < nHeight; i++)
+    {
+        for (j = 0; j < nWidth; j++)
+        {
+            *(ptdata++) = *(ptbits+2);
+            *(ptdata++) = *(ptbits+1);
+            *(ptdata++) = *(ptbits  );
+            ptbits += 3;
+        }
+        ptbits += nPadding;
+    }
+    if ((pDC = GetSelectedInto()) == NULL)
+    {
+        ::GpiSetBitmap(hPSMem, NULLHANDLE);
+        ::GpiDestroyPS(hPSMem);
+        ::DevCloseDC(hDCMem);
+    }
+
+    //
+    // Similarly, set data according to the possible mask bitmap
+    //
+    if (GetMask() && GetMask()->GetMaskBitmap())
+    {
+        hBitmap = (HBITMAP)GetMask()->GetMaskBitmap();
+
+        //
+        // Memory DC/PS created, color set, data copied, and memory DC/PS deleted
+        //
+        HDC                        hMemDC = ::DevOpenDC( vHabmain
+                                                        ,OD_MEMORY
+                                                        ,"*"
+                                                        ,5L
+                                                        ,(PDEVOPENDATA)&vDop
+                                                        ,NULLHANDLE
+                                                       );
+        HPS                         hMemPS = ::GpiCreatePS( vHabmain
+                                                           ,hMemDC
+                                                           ,&vSizlPage
+                                                           ,PU_PELS | GPIA_ASSOC
+                                                          );
+        ::GpiSetColor(hMemPS, OS2RGB(0, 0, 0));
+        ::GpiSetBackColor(hMemPS, OS2RGB(255, 255, 255) );
+        ::GpiSetBitmap(hMemPS, hBitmap);
+        ::GpiQueryBitmapBits( hPSMem
+                             ,0L
+                             ,(LONG)nHeight
+                             ,(PBYTE)lpBits
+                             ,&vDIBInfo
+                            );
+        ::GpiSetBitmap(hMemPS, NULLHANDLE);
+        ::GpiDestroyPS(hMemPS);
+        ::DevCloseDC(hMemDC);
+
+        //
+        // Background color set to RGB(16,16,16) in consistent with wxGTK
+        //
+        unsigned char               ucRed = 16;
+        unsigned char               ucGreen = 16;
+        unsigned char               ucBlue = 16;
+
+        ptdata = pData;
+        ptbits = lpBits;
+        for (i = 0; i < nHeight; i++)
+        {
+            for (j = 0; j < nWidth; j++)
+            {
+                if (*ptbits != 0)
+                    ptdata += 3;
+                else
+                {
+                    *(ptdata++)  = ucRed;
+                    *(ptdata++)  = ucGreen;
+                    *(ptdata++)  = ucBlue;
+                }
+                ptbits += 3;
+            }
+            ptbits += nPadding;
+        }
+        vImage.SetMaskColour( ucRed
+                             ,ucGreen
+                             ,ucBlue
+                            );
+        vImage.SetMask(TRUE);
+    }
+    else
+    {
+        vImage.SetMask(FALSE);
+    }
+
+    //
+    // Free allocated resources
+    //
+    free(lpBits);
+    return vImage;
+} // end of wxBitmap::ConvertToImage
+
+// ----------------------------------------------------------------------------
+// sub bitmap extraction
+// ----------------------------------------------------------------------------
+
+wxBitmap wxBitmap::GetSubBitmap(
+  const wxRect&                     rRect
+) const
+{
+    wxCHECK_MSG( Ok() &&
+                 (rRect.x >= 0) && (rRect.y >= 0) &&
+                 (rRect.x + rRect.width <= GetWidth()) &&
+                 (rRect.y + rRect.height <= GetHeight()),
+                 wxNullBitmap, wxT("Invalid bitmap or bitmap region") );
+
+    wxBitmap                        vRet( rRect.width
+                                         ,rRect.height
+                                         ,GetDepth()
+                                        );
+    wxASSERT_MSG( vRet.Ok(), wxT("GetSubBitmap error") );
+
+
+    //
+    // Copy bitmap data
+    //
+    SIZEL                           vSize = {0, 0};
+    DEVOPENSTRUC                    vDop = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
+    HDC                             hDCSrc = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
+    HDC                             hDCDst = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
+    HPS                             hPSSrc = ::GpiCreatePS(vHabmain, hDCSrc, &vSize, PU_PELS | GPIA_ASSOC);
+    HPS                             hPSDst = ::GpiCreatePS(vHabmain, hDCDst, &vSize, PU_PELS | GPIA_ASSOC);
+    POINTL                          vPoint[4] = { {0, 0}, {rRect.width, rRect.height},
+                                                  {rRect.x, rRect.y},
+                                                  {rRect.x + rRect.width, rRect.y + rRect.height}
+                                                };
+
+    ::GpiSetBitmap(hPSSrc, (HBITMAP) GetHBITMAP());
+    ::GpiSetBitmap(hPSDst, (HBITMAP) vRet.GetHBITMAP());
+    ::GpiBitBlt( hPSDst
+                ,hPSSrc
+                ,4L
+                ,vPoint
+                ,ROP_SRCCOPY
+                ,BBO_IGNORE
+               );
+
+    //
+    // Copy mask if there is one
+    //
+    if (GetMask())
+    {
+        BITMAPINFOHEADER2           vBmih;
+
+        memset(&vBmih, '\0', sizeof(BITMAPINFOHEADER2));
+        vBmih.cbFix     = sizeof(BITMAPINFOHEADER2);
+        vBmih.cx        = rRect.width;
+        vBmih.cy        = rRect.height;
+        vBmih.cPlanes   = 1;
+        vBmih.cBitCount = 24;
+
+        HBITMAP                     hBmpMask = ::GpiCreateBitmap( hPSDst
+                                                                 ,&vBmih
+                                                                 ,0L
+                                                                 ,NULL
+                                                                 ,NULL
+                                                                );
+
+        ::GpiSetBitmap(hPSSrc, (HBITMAP) GetHBITMAP());
+        ::GpiSetBitmap(hPSDst, (HBITMAP) vRet.GetHBITMAP());
+
+        ::GpiSetBitmap(hPSSrc, (HBITMAP) GetMask()->GetMaskBitmap());
+        ::GpiSetBitmap(hPSDst, (HBITMAP) hBmpMask);
+        ::GpiBitBlt( hPSDst
+                    ,hPSSrc
+                    ,4L
+                    ,vPoint
+                    ,ROP_SRCCOPY
+                    ,BBO_IGNORE
+                   );
+
+        wxMask*                     pMask = new wxMask((WXHBITMAP)hBmpMask);
+        vRet.SetMask(pMask);
+    }
+
+    ::GpiSetBitmap(hPSSrc, NULL);
+    ::GpiSetBitmap(hPSDst, NULL);
+    ::GpiDestroyPS(hPSSrc);
+    ::GpiDestroyPS(hPSDst);
+    ::DevCloseDC(hDCSrc);
+    ::DevCloseDC(hDCDst);
+    return vRet;
+} // end of wxBitmap::GetSubBitmap
+
+// ----------------------------------------------------------------------------
+// wxBitmap accessors
+// ----------------------------------------------------------------------------
+
+void wxBitmap::SetQuality(
+  int                               nQ
 )
 {
     EnsureHasData();
 
-    GetBitmapData()->m_bOk = bOk;
-}
-#endif // WXWIN_COMPATIBILITY_2
+    GetBitmapData()->m_nQuality = nQ;
+} // end of wxBitmap::SetQuality
 
 void wxBitmap::SetPalette(
   const wxPalette&                  rPalette
@@ -473,7 +1170,7 @@ void wxBitmap::SetPalette(
     EnsureHasData();
 
     GetBitmapData()->m_vBitmapPalette = rPalette;
-}
+} // end of wxBitmap::SetPalette
 
 void wxBitmap::SetMask(
   wxMask*                           pMask
@@ -482,35 +1179,14 @@ void wxBitmap::SetMask(
     EnsureHasData();
 
     GetBitmapData()->m_pBitmapMask = pMask;
-}
+} // end of wxBitmap::SetMask
 
-// Will try something for OS/2 but not really sure how close
-// to the msw intent this is.
 wxBitmap wxBitmap::GetBitmapForDC(
   wxDC&                             rDc
 ) const
 {
-    wxMemoryDC                      vMemDC;
-    wxBitmap                        vTmpBitmap( this->GetWidth()
-                                               ,this->GetHeight()
-                                               ,rDc.GetDepth()
-                                              );
-    WXHBITMAP                       vOldBitmap;
-    HPS                             hMemoryPS;
-    HPS                             hPs;
-    POINTL                          vPoint[4];
-    SIZEL                           vSize = {0,0};
-
-    hMemoryPS = ::GpiCreatePS(vHabmain, (HDC)vMemDC.GetHDC(), &vSize, PU_PELS | GPIT_MICRO | GPIA_ASSOC);
-    hPs       = ::GpiCreatePS(vHabmain, (HDC)rDc.GetHDC(), &vSize, PU_PELS | GPIT_MICRO | GPIA_ASSOC);
-
-    // TODO: Set the points
-
-    vOldBitmap = (WXHBITMAP)::GpiSetBitmap(hPs, (HBITMAP)vTmpBitmap.GetHBITMAP());
-    ::GpiBitBlt(hPs, hMemoryPS, 4L, vPoint, ROP_SRCCOPY, BBO_IGNORE);
-
-    return(vTmpBitmap);
-}
+    return(*this);
+} // end of wxBitmap::GetBitmapForDC
 
 // ----------------------------------------------------------------------------
 // wxMask
@@ -519,7 +1195,7 @@ wxBitmap wxBitmap::GetBitmapForDC(
 wxMask::wxMask()
 {
     m_hMaskBitmap = 0;
-}
+} // end of wxMask::wxMask
 
 // Construct a mask from a bitmap and a colour indicating
 // the transparent area
@@ -532,7 +1208,7 @@ wxMask::wxMask(
     Create( rBitmap
            ,rColour
           );
-}
+} // end of wxMask::wxMask
 
 // Construct a mask from a bitmap and a palette index indicating
 // the transparent area
@@ -545,7 +1221,7 @@ wxMask::wxMask(
     Create( rBitmap
            ,nPaletteIndex
           );
-}
+} // end of wxMask::wxMask
 
 // Construct a mask from a mono bitmap (copies the bitmap).
 wxMask::wxMask(
@@ -554,23 +1230,29 @@ wxMask::wxMask(
 {
     m_hMaskBitmap = 0;
     Create(rBitmap);
-}
+} // end of wxMask::wxMask
 
 wxMask::~wxMask()
 {
     if (m_hMaskBitmap)
         ::GpiDeleteBitmap((HBITMAP)m_hMaskBitmap);
-}
+} // end of wxMask::~wxMask
 
 // Create a mask from a mono bitmap (copies the bitmap).
 bool wxMask::Create(
   const wxBitmap&                   rBitmap
 )
 {
-    BITMAPINFOHEADER2               vHeader;
-    DEVOPENSTRUC                    vDop = { NULL, "DISPLAY", NULL, NULL, NULL, NULL, NULL, NULL, NULL };
+    BITMAPINFOHEADER2               vBmih;
     SIZEL                           vSize = {0, 0};
-    POINTL                          vPoint[4];
+    DEVOPENSTRUC                    vDop = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
+    HDC                             hDCSrc = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
+    HDC                             hDCDst = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
+    HPS                             hPSSrc = ::GpiCreatePS(vHabmain, hDCSrc, &vSize, PU_PELS | GPIA_ASSOC);
+    HPS                             hPSDst = ::GpiCreatePS(vHabmain, hDCDst, &vSize, PU_PELS | GPIA_ASSOC);
+    POINTL                          vPoint[4] = { {0 ,0}, {rBitmap.GetWidth(), rBitmap.GetHeight()},
+                                                  {0, 0}, {rBitmap.GetWidth(), rBitmap.GetHeight()}
+                                                };
 
     if (m_hMaskBitmap)
     {
@@ -581,30 +1263,37 @@ bool wxMask::Create(
     {
         return(FALSE);
     }
-    vHeader.cbFix           = sizeof(vHeader);
-    vHeader.cx              = (USHORT)rBitmap.GetWidth();
-    vHeader.cy              = (USHORT)rBitmap.GetHeight();
-    vHeader.cPlanes         = 1;
-    vHeader.cBitCount       = 1;
-
-    m_hMaskBitmap = (WXHBITMAP) ::GpiCreateBitmap( m_hPs
-                                                  ,&vHeader
-                                                  ,0L
-                                                  ,NULL
-                                                  ,NULL
-                                                 );
-
-    HPS srcPS = ::GpiCreatePS(vHabmain, m_hDc, &vSize, PU_PELS | GPIT_MICRO | GPIA_ASSOC);
-    ::GpiSetBitmap(srcPS, (HBITMAP)rBitmap.GetHBITMAP());
-    HPS destPS = ::GpiCreatePS(vHabmain, m_hDc, &vSize, PU_PELS | GPIT_MICRO | GPIA_ASSOC);
-    ::GpiSetBitmap(srcPS, (HBITMAP)m_hMaskBitmap);
-    // TODO: Set the point array
-    ::GpiBitBlt(destPS, srcPS, 4L, vPoint, ROP_SRCCOPY , BBO_IGNORE);
-
-    ::GpiDestroyPS(srcPS);
-    ::GpiDestroyPS(destPS);
+
+    memset(&vBmih, '\0', sizeof(BITMAPINFOHEADER2));
+    vBmih.cbFix     =  sizeof(BITMAPINFOHEADER2);
+    vBmih.cx        = rBitmap.GetWidth();
+    vBmih.cy        = rBitmap.GetHeight();
+    vBmih.cPlanes   = 1;
+    vBmih.cBitCount = 24;
+
+    m_hMaskBitmap = ::GpiCreateBitmap( hPSDst
+                                      ,&vBmih
+                                      ,0L
+                                      ,NULL
+                                      ,NULL
+                                     );
+
+    ::GpiSetBitmap(hPSSrc, (HBITMAP) rBitmap.GetHBITMAP());
+    ::GpiSetBitmap(hPSDst, (HBITMAP) m_hMaskBitmap);
+    ::GpiBitBlt( hPSDst
+                ,hPSSrc
+                ,4L
+                ,vPoint
+                ,ROP_SRCCOPY
+                ,BBO_IGNORE
+               );
+
+    ::GpiDestroyPS(hPSSrc);
+    ::GpiDestroyPS(hPSDst);
+    ::DevCloseDC(hDCSrc);
+    ::DevCloseDC(hDCDst);
     return(TRUE);
-}
+} // end of wxMask::Create
 
 // Create a mask from a bitmap and a palette index indicating
 // the transparent area
@@ -641,7 +1330,7 @@ bool wxMask::Create(
         }
     }
     return(FALSE);
-}
+} // end of wxMask::Create
 
 // Create a mask from a bitmap and a colour indicating
 // the transparent area
@@ -650,10 +1339,18 @@ bool wxMask::Create(
 , const wxColour&                   rColour
 )
 {
-    BITMAPINFOHEADER2               vHeader;
-    DEVOPENSTRUC                    vDop = { NULL, "DISPLAY", NULL, NULL, NULL, NULL, NULL, NULL, NULL };
+    bool                            bOk = TRUE;
+    COLORREF                        vMaskColour = OS2RGB( rColour.Red()
+                                                         ,rColour.Green()
+                                                         ,rColour.Blue()
+                                                        );
+    BITMAPINFOHEADER2               vBmih;
     SIZEL                           vSize = {0, 0};
-    POINTL                          vPoint[4];
+    DEVOPENSTRUC                    vDop = { NULL, "DISPLAY", NULL, NULL, NULL, NULL, NULL, NULL, NULL };
+    HDC                             hDCSrc = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
+    HDC                             hDCDst = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
+    HPS                             hPSSrc = ::GpiCreatePS(vHabmain, hDCSrc, &vSize, PU_PELS | GPIA_ASSOC);
+    HPS                             hPSDst = ::GpiCreatePS(vHabmain, hDCDst, &vSize, PU_PELS | GPIA_ASSOC);
 
     if (m_hMaskBitmap)
     {
@@ -665,58 +1362,68 @@ bool wxMask::Create(
         return(FALSE);
     }
 
-    // scan the bitmap for the transparent colour and set
+    //
+    // Scan the bitmap for the transparent colour and set
     // the corresponding pixels in the mask to BLACK and
     // the rest to WHITE
-    COLORREF                        vMaskColour = OS2RGB(rColour.Red(), rColour.Green(), rColour.Blue());
-
-    vHeader.cbFix           = sizeof(vHeader);
-    vHeader.cx              = (USHORT)rBitmap.GetWidth();
-    vHeader.cy              = (USHORT)rBitmap.GetHeight();
-    vHeader.cPlanes         = 1;
-    vHeader.cBitCount       = 1;
-
-    m_hMaskBitmap = (WXHBITMAP) ::GpiCreateBitmap( m_hPs
-                                                  ,&vHeader
-                                                  ,0L
-                                                  ,NULL
-                                                  ,NULL
-                                                 );
-
-    HPS srcPS = ::GpiCreatePS(vHabmain, m_hDc, &vSize, PU_PELS | GPIT_MICRO | GPIA_ASSOC);
-    ::GpiSetBitmap(srcPS, (HBITMAP)rBitmap.GetHBITMAP());
-    HPS destPS = ::GpiCreatePS(vHabmain, m_hDc, &vSize, PU_PELS | GPIT_MICRO | GPIA_ASSOC);
-    ::GpiSetBitmap(srcPS, (HBITMAP)m_hMaskBitmap);
-
-    // this is not very efficient, but I can't think
+    //
+
+    memset(&vBmih, '\0', sizeof(BITMAPINFOHEADER2));
+    vBmih.cbFix     =  sizeof(BITMAPINFOHEADER2);
+    vBmih.cx        = rBitmap.GetWidth();
+    vBmih.cy        = rBitmap.GetHeight();
+    vBmih.cPlanes   = 1;
+    vBmih.cBitCount = 1;
+
+    m_hMaskBitmap = ::GpiCreateBitmap( hPSDst
+                                      ,&vBmih
+                                      ,0L
+                                      ,NULL
+                                      ,NULL
+                                     );
+
+    ::GpiSetBitmap(hPSSrc, (HBITMAP) rBitmap.GetHBITMAP());
+    ::GpiSetBitmap(hPSDst, (HBITMAP) m_hMaskBitmap);
+
+    //
+    // This is not very efficient, but I can't think
     // of a better way of doing it
+    //
     for (int w = 0; w < rBitmap.GetWidth(); w++)
     {
         for (int h = 0; h < rBitmap.GetHeight(); h++)
         {
-            POINTL                  vPoint;
-
-            vPoint.x = w;
-            vPoint.y = h;
-
-            COLORREF                col = ::GpiQueryPel(srcPS, &vPoint);
+            POINTL                  vPt = {w, h};
+            COLORREF                vCol = (COLORREF)::GpiQueryPel(hPSSrc, &vPt);
+            if (vCol == (COLORREF)CLR_NOINDEX)
+            {
+                //
+                // Doesn't make sense to continue
+                //
+                bOk = FALSE;
+                break;
+            }
 
-            if (col == vMaskColour)
+            if (vCol == vMaskColour)
             {
-                ::GpiSetColor(destPS, CLR_WHITE);
-                ::GpiSetPel(destPS, &vPoint);
+                ::GpiSetColor(hPSDst, OS2RGB(0, 0, 0));
+                ::GpiSetPel(hPSDst, &vPt);
             }
             else
             {
-                ::GpiSetColor(destPS, CLR_BLACK);
-                ::GpiSetPel(destPS, &vPoint);
+                ::GpiSetColor(hPSDst, OS2RGB(255, 255, 255));
+                ::GpiSetPel(hPSDst, &vPt);
             }
         }
     }
-    ::GpiDestroyPS(srcPS);
-    ::GpiDestroyPS(destPS);
+    ::GpiSetBitmap(hPSSrc, NULL);
+    ::GpiSetBitmap(hPSDst, NULL);
+    ::GpiDestroyPS(hPSSrc);
+    ::GpiDestroyPS(hPSDst);
+    ::DevCloseDC(hDCSrc);
+    ::DevCloseDC(hDCDst);
     return(TRUE);
-}
+} // end of wxMask::Create
 
 // ----------------------------------------------------------------------------
 // wxBitmapHandler
@@ -745,8 +1452,7 @@ bool wxBitmapHandler::Create(
 
 bool wxBitmapHandler::Load(
   wxGDIImage*                       pImage
-, const wxString&                   rName
-, HPS                               hPs
+, int                               nId
 , long                              lFlags
 , int                               nWidth
 , int                               nHeight
@@ -757,8 +1463,7 @@ bool wxBitmapHandler::Load(
                                                            );
 
     return(pBitmap ? LoadFile( pBitmap
-                              ,rName
-                              ,hPs
+                              ,nId
                               ,lFlags
                               ,nWidth
                               ,nHeight
@@ -795,8 +1500,7 @@ bool wxBitmapHandler::Create(
 
 bool wxBitmapHandler::LoadFile(
   wxBitmap*                         WXUNUSED(pBitmap)
-, const wxString&                   WXUNUSED(rName)
-, HPS                               WXUNUSED(hPs)
+, int                               WXUNUSED(nId)
 , long                              WXUNUSED(lType)
 , int                               WXUNUSED(nDesiredWidth)
 , int                               WXUNUSED(nDesiredHeight)
@@ -815,3 +1519,74 @@ bool wxBitmapHandler::SaveFile(
     return(FALSE);
 }
 
+// ----------------------------------------------------------------------------
+// Utility functions
+// ----------------------------------------------------------------------------
+HBITMAP wxInvertMask(
+  HBITMAP                           hBmpMask
+, int                               nWidth
+, int                               nHeight
+)
+{
+    HBITMAP                         hBmpInvMask = 0;
+
+    wxCHECK_MSG( hBmpMask, 0, _T("invalid bitmap in wxInvertMask") );
+
+    //
+    // Get width/height from the bitmap if not given
+    //
+    if (!nWidth || !nHeight)
+    {
+        BITMAPINFOHEADER2           vBmhdr;
+
+        ::GpiQueryBitmapInfoHeader( hBmpMask
+                                   ,&vBmhdr
+                                  );
+        nWidth  = (int)vBmhdr.cx;
+        nHeight = (int)vBmhdr.cy;
+    }
+
+    BITMAPINFOHEADER2               vBmih;
+    SIZEL                           vSize = {0, 0};
+    DEVOPENSTRUC                    vDop = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
+    HDC                             hDCSrc = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
+    HDC                             hDCDst = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
+    HPS                             hPSSrc = ::GpiCreatePS(vHabmain, hDCSrc, &vSize, PU_PELS | GPIA_ASSOC);
+    HPS                             hPSDst = ::GpiCreatePS(vHabmain, hDCDst, &vSize, PU_PELS | GPIA_ASSOC);
+    POINTL                          vPoint[4] = { {0 ,0}, {nWidth, nHeight},
+                                                  {0, 0}, {nWidth, nHeight}
+                                                };
+
+    memset(&vBmih, '\0', 16);
+    vBmih.cbFix     = 16;
+    vBmih.cx        = nWidth;
+    vBmih.cy        = nHeight;
+    vBmih.cPlanes   = 1;
+    vBmih.cBitCount = 24;
+
+    hBmpInvMask = ::GpiCreateBitmap( hPSDst
+                                    ,&vBmih
+                                    ,0L
+                                    ,NULL
+                                    ,NULL
+                                   );
+
+    ::GpiSetBitmap(hPSSrc, (HBITMAP) hBmpMask);
+    ::GpiSetBitmap(hPSDst, (HBITMAP) hBmpInvMask);
+
+    ::GpiBitBlt( hPSDst
+                ,hPSSrc
+                ,4L
+                ,vPoint
+                ,ROP_SRCINVERT
+                ,BBO_IGNORE
+               );
+
+    ::GpiDestroyPS(hPSSrc);
+    ::GpiDestroyPS(hPSDst);
+    ::DevCloseDC(hDCSrc);
+    ::DevCloseDC(hDCDst);
+
+    return hBmpInvMask;
+} // end of WxWinGdi_InvertMask
+