Caret dropout fix

[wxWidgets.git] / src / os2 / bitmap.cpp

diff --git a/src/os2/bitmap.cpp b/src/os2/bitmap.cpp
index 51b5cfdc4c787ee9dd96dba3ad5392e2c9a07a38..16373e6f32a07fb34dad65c732ce6854357b23d3 100644 (file)
--- a/src/os2/bitmap.cpp
+++ b/src/os2/bitmap.cpp
@@ -1,5 +1,5 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

-// Name:        bitmap.cpp
+// Name:        src/os2/bitmap.cpp

 // Purpose:     wxBitmap
 // Author:      David Webster
 // Modified by:
 // Purpose:     wxBitmap
 // Author:      David Webster
 // Modified by:


@@ -9,13 +9,11 @@
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 

-#ifdef __GNUG__
-    #pragma implementation "bitmap.h"
-#endif
-

 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 

+#include "wx/bitmap.h"
+

 #ifndef WX_PRECOMP
     #include <stdio.h>
 
 #ifndef WX_PRECOMP
     #include <stdio.h>
 


@@ -24,15 +22,14 @@
     #include "wx/app.h"
     #include "wx/palette.h"
     #include "wx/dcmemory.h"
     #include "wx/app.h"
     #include "wx/palette.h"
     #include "wx/dcmemory.h"

-    #include "wx/bitmap.h"

     #include "wx/icon.h"
     #include "wx/icon.h"

+    #include "wx/log.h"
+    #include "wx/image.h"

 #endif
 
 #endif
 

+#include "wx/os2/dc.h"

 #include "wx/os2/private.h"
 #include "wx/os2/private.h"

-#include "wx/log.h"

 
 

-//#include "wx/msw/dib.h"
-#include "wx/image.h"

 #include "wx/xpmdecod.h"
 
 // ----------------------------------------------------------------------------
 #include "wx/xpmdecod.h"
 
 // ----------------------------------------------------------------------------


@@ -61,6 +58,19 @@ wxBitmapRefData::wxBitmapRefData()
     m_hBitmap       = (WXHBITMAP) NULL;
 } // end of wxBitmapRefData::wxBitmapRefData
 
     m_hBitmap       = (WXHBITMAP) NULL;
 } // end of wxBitmapRefData::wxBitmapRefData
 

+wxBitmapRefData::wxBitmapRefData(const wxBitmapRefData &tocopy)
+{
+    m_nQuality = tocopy.m_nQuality;
+    m_pSelectedInto = NULL;     // don't copy this
+    m_nNumColors    = tocopy.m_nNumColors;
+
+    // copy the mask
+    if (tocopy.m_pBitmapMask)
+        m_pBitmapMask = new wxMask(*tocopy.m_pBitmapMask);
+
+    m_hBitmap = wxCopyBmp(tocopy.m_hBitmap);
+}
+

 void wxBitmapRefData::Free()
 {
     if ( m_pSelectedInto )
 void wxBitmapRefData::Free()
 {
     if ( m_pSelectedInto )


@@ -74,17 +84,18 @@ void wxBitmapRefData::Free()
             wxLogLastError(wxT("GpiDeleteBitmap(hbitmap)"));
         }
     }
             wxLogLastError(wxT("GpiDeleteBitmap(hbitmap)"));
         }
     }

-    if (m_pBitmapMask)
-    {
-        delete m_pBitmapMask;
-        m_pBitmapMask = NULL;
-    }
+    wxDELETE(m_pBitmapMask);

 } // end of wxBitmapRefData::Free
 
 // ----------------------------------------------------------------------------
 // wxBitmap creation
 // ----------------------------------------------------------------------------
 
 } // end of wxBitmapRefData::Free
 
 // ----------------------------------------------------------------------------
 // wxBitmap creation
 // ----------------------------------------------------------------------------
 

+wxGDIRefData* wxBitmap::CloneGDIRefData(const wxGDIRefData* data) const
+{
+    return new wxBitmapRefData(*static_cast<const wxBitmapRefData *>(data));
+}
+

 // this function should be called from all wxBitmap ctors
 void wxBitmap::Init()
 {
 // this function should be called from all wxBitmap ctors
 void wxBitmap::Init()
 {


@@ -94,9 +105,7 @@ void wxBitmap::Init()
     //
 } // end of wxBitmap::Init
 
     //
 } // end of wxBitmap::Init
 

-bool wxBitmap::CopyFromIconOrCursor(
-  const wxGDIImage&                 rIcon
-)
+bool wxBitmap::CopyFromIconOrCursor(const wxGDIImage& rIcon)

 {
     HPOINTER                        hIcon = (HPOINTER)rIcon.GetHandle();
     POINTERINFO                     SIconInfo;
 {
     HPOINTER                        hIcon = (HPOINTER)rIcon.GetHandle();
     POINTERINFO                     SIconInfo;


@@ -133,7 +142,7 @@ bool wxBitmap::CopyFromCursor(
 {
     UnRef();
 
 {
     UnRef();
 

-    if (!rCursor.Ok())
+    if (!rCursor.IsOk())

         return(false);
     return(CopyFromIconOrCursor(rCursor));
 } // end of wxBitmap::CopyFromCursor
         return(false);
     return(CopyFromIconOrCursor(rCursor));
 } // end of wxBitmap::CopyFromCursor


@@ -144,7 +153,7 @@ bool wxBitmap::CopyFromIcon(
 {
     UnRef();
 
 {
     UnRef();
 

-    if (!rIcon.Ok())
+    if (!rIcon.IsOk())

         return(false);
 
     return CopyFromIconOrCursor(rIcon);
         return(false);
 
     return CopyFromIconOrCursor(rIcon);


@@ -264,21 +273,8 @@ wxBitmap::wxBitmap(
 } // end of wxBitmap::wxBitmap
 
 wxBitmap::wxBitmap(
 } // end of wxBitmap::wxBitmap
 
 wxBitmap::wxBitmap(

-  int                               nW
-, int                               nH
-, int                               nD
-)
-{
-    Init();
-    (void)Create( nW
-                 ,nH
-                 ,nD
-                );
-} // end of wxBitmap::wxBitmap
-
-wxBitmap::wxBitmap(
-  void*                             pData
-, long                              lType
+  const void*                       pData
+, wxBitmapType                      lType

 , int                               nWidth
 , int                               nHeight
 , int                               nDepth
 , int                               nWidth
 , int                               nHeight
 , int                               nDepth


@@ -296,12 +292,12 @@ wxBitmap::wxBitmap(
 
 wxBitmap::wxBitmap(
   int                               nId
 
 wxBitmap::wxBitmap(
   int                               nId

-, long                              lType
+, wxBitmapType                      lType

 )
 {
     Init();
     LoadFile( nId
 )
 {
     Init();
     LoadFile( nId

-             ,(int)lType
+             ,lType

             );
     SetId(nId);
 } // end of wxBitmap::wxBitmap
             );
     SetId(nId);
 } // end of wxBitmap::wxBitmap


@@ -383,33 +379,40 @@ bool wxBitmap::Create(
     }
     SetHBITMAP((WXHBITMAP)hBmp);
 
     }
     SetHBITMAP((WXHBITMAP)hBmp);
 

-    return Ok();
+    return IsOk();

 } // end of wxBitmap::Create
 
 } // end of wxBitmap::Create
 

-bool wxBitmap::CreateFromXpm(
-  const char**                      ppData
-)
+bool wxBitmap::LoadFile(const wxString& filename, wxBitmapType type)

 {
 {

-#if wxUSE_IMAGE && wxUSE_XPM
-    Init();
+    UnRef();

 
 

-    wxCHECK_MSG(ppData != NULL, false, wxT("invalid bitmap data"))
+    wxBitmapHandler *handler = wxDynamicCast(FindHandler(type), wxBitmapHandler);

 
 

-    wxXPMDecoder                    vDecoder;
-    wxImage                         vImg = vDecoder.ReadData(ppData);
+    if ( handler )
+    {
+        m_refData = new wxBitmapRefData;

 
 

-    wxCHECK_MSG(vImg.Ok(), false, wxT("invalid bitmap data"))
+        return handler->LoadFile(this, filename, type, -1, -1);
+    }
+#if wxUSE_IMAGE
+    else // no bitmap handler found
+    {
+        wxImage image;
+        if ( image.LoadFile( filename, type ) && image.IsOk() )
+        {
+            *this = wxBitmap(image);
+
+            return true;
+        }
+    }
+#endif // wxUSE_IMAGE

 
 

-    *this = wxBitmap(vImg);
-    return true;
-#else

     return false;
     return false;

-#endif
-} // end of wxBitmap::CreateFromXpm
+}

 
 bool wxBitmap::LoadFile(
   int                               nId
 
 bool wxBitmap::LoadFile(
   int                               nId

-, long                              lType
+, wxBitmapType                      lType

 )
 {
     UnRef();
 )
 {
     UnRef();


@@ -436,8 +439,8 @@ bool wxBitmap::LoadFile(
 } // end of wxBitmap::LoadFile
 
 bool wxBitmap::Create(
 } // end of wxBitmap::LoadFile
 
 bool wxBitmap::Create(

-  void*                             pData
-, long                              lType
+  const void*                       pData
+, wxBitmapType                      lType

 , int                               nWidth
 , int                               nHeight
 , int                               nDepth
 , int                               nWidth
 , int                               nHeight
 , int                               nDepth


@@ -469,7 +472,7 @@ bool wxBitmap::Create(
 
 bool wxBitmap::SaveFile(
   const wxString&                   rFilename
 
 bool wxBitmap::SaveFile(
   const wxString&                   rFilename

-, int                               lType
+, wxBitmapType                      lType

 , const wxPalette*                  pPalette
 )
 {
 , const wxPalette*                  pPalette
 )
 {


@@ -490,7 +493,7 @@ bool wxBitmap::SaveFile(
         // FIXME what about palette? shouldn't we use it?
         wxImage                     vImage = ConvertToImage();
 
         // FIXME what about palette? shouldn't we use it?
         wxImage                     vImage = ConvertToImage();
 

-        if (!vImage.Ok())
+        if (!vImage.IsOk())

             return false;
 
         return(vImage.SaveFile( rFilename
             return false;
 
         return(vImage.SaveFile( rFilename


@@ -509,7 +512,7 @@ bool wxBitmap::CreateFromImage (
 , int                               nDepth
 )
 {
 , int                               nDepth
 )
 {

-    wxCHECK_MSG(rImage.Ok(), false, wxT("invalid image"));
+    wxCHECK_MSG(rImage.IsOk(), false, wxT("invalid image"));

     m_refData = new wxBitmapRefData();
 
     int                             nSizeLimit = 1024 * 768 * 3;
     m_refData = new wxBitmapRefData();
 
     int                             nSizeLimit = 1024 * 768 * 3;


@@ -546,7 +549,7 @@ bool wxBitmap::CreateFromImage (
     //
     // Set bitmap parameters
     //
     //
     // Set bitmap parameters
     //

-    wxCHECK_MSG(rImage.Ok(), false, wxT("invalid image"));
+    wxCHECK_MSG(rImage.IsOk(), false, wxT("invalid image"));

     SetWidth(nWidth);
     SetHeight(nBmpHeight);
     if (nDepth == 1)
     SetWidth(nWidth);
     SetHeight(nBmpHeight);
     if (nDepth == 1)


@@ -621,7 +624,7 @@ bool wxBitmap::CreateFromImage (
                             );
 #if wxUSE_PALETTE
     HPAL                            hOldPalette = NULLHANDLE;
                             );
 #if wxUSE_PALETTE
     HPAL                            hOldPalette = NULLHANDLE;

-    if (rImage.GetPalette().Ok())
+    if (rImage.GetPalette().IsOk())

     {
         hOldPalette = ::GpiSelectPalette(hPS, (HPAL)rImage.GetPalette().GetHPALETTE());
     }
     {
         hOldPalette = ::GpiSelectPalette(hPS, (HPAL)rImage.GetPalette().GetHPALETTE());
     }


@@ -837,7 +840,7 @@ wxImage wxBitmap::ConvertToImage() const
     wxImage                         vImage;
     wxDC*                           pDC;
 
     wxImage                         vImage;
     wxDC*                           pDC;
 

-    wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") );
+    wxCHECK_MSG( IsOk(), wxNullImage, wxT("invalid bitmap") );

 
     //
     // Create an wxImage object
 
     //
     // Create an wxImage object


@@ -909,9 +912,12 @@ wxImage wxBitmap::ConvertToImage() const
     //
     // May already be selected into a PS
     //
     //
     // May already be selected into a PS
     //

-    if ((pDC = GetSelectedInto()) != NULL)
+    pDC = GetSelectedInto();
+    const wxPMDCImpl *impl;
+    if (pDC != NULL &&
+        (impl = wxDynamicCast( pDC->GetImpl(), wxPMDCImpl )) != NULL)

     {
     {

-        hPSMem = pDC->GetHPS();
+        hPSMem = impl->GetHPS();

     }
     else
     {
     }
     else
     {


@@ -1066,7 +1072,7 @@ wxBitmap wxBitmap::GetSubBitmap(
   const wxRect&                     rRect
 ) const
 {
   const wxRect&                     rRect
 ) const
 {

-    wxCHECK_MSG( Ok() &&
+    wxCHECK_MSG( IsOk() &&

                  (rRect.x >= 0) && (rRect.y >= 0) &&
                  (rRect.x + rRect.width <= GetWidth()) &&
                  (rRect.y + rRect.height <= GetHeight()),
                  (rRect.x >= 0) && (rRect.y >= 0) &&
                  (rRect.x + rRect.width <= GetWidth()) &&
                  (rRect.y + rRect.height <= GetHeight()),


@@ -1076,7 +1082,7 @@ wxBitmap wxBitmap::GetSubBitmap(
                                          ,rRect.height
                                          ,GetDepth()
                                         );
                                          ,rRect.height
                                          ,GetDepth()
                                         );

-    wxASSERT_MSG( vRet.Ok(), wxT("GetSubBitmap error") );
+    wxASSERT_MSG( vRet.IsOk(), wxT("GetSubBitmap error") );

 
 
     //
 
 
     //


@@ -1195,6 +1201,11 @@ wxMask::wxMask()
     m_hMaskBitmap = 0;
 } // end of wxMask::wxMask
 
     m_hMaskBitmap = 0;
 } // end of wxMask::wxMask
 

+wxMask::wxMask(const wxMask& tocopy)
+{
+    m_hMaskBitmap = wxCopyBmp(tocopy.m_hMaskBitmap);
+} // end of wxMask::wxMask
+

 // Construct a mask from a bitmap and a colour indicating
 // the transparent area
 wxMask::wxMask(
 // Construct a mask from a bitmap and a colour indicating
 // the transparent area
 wxMask::wxMask(


@@ -1257,7 +1268,7 @@ bool wxMask::Create(
         ::GpiDeleteBitmap((HBITMAP) m_hMaskBitmap);
         m_hMaskBitmap = 0;
     }
         ::GpiDeleteBitmap((HBITMAP) m_hMaskBitmap);
         m_hMaskBitmap = 0;
     }

-    if (!rBitmap.Ok() || rBitmap.GetDepth() != 1)
+    if (!rBitmap.IsOk() || rBitmap.GetDepth() != 1)

     {
         return false;
     }
     {
         return false;
     }


@@ -1305,7 +1316,7 @@ bool wxMask::Create(
         ::GpiDeleteBitmap((HBITMAP) m_hMaskBitmap);
         m_hMaskBitmap = 0;
     }
         ::GpiDeleteBitmap((HBITMAP) m_hMaskBitmap);
         m_hMaskBitmap = 0;
     }

-    if (rBitmap.Ok() && rBitmap.GetPalette()->Ok())
+    if (rBitmap.IsOk() && rBitmap.GetPalette()->IsOk())

     {
         unsigned char               cRed;
         unsigned char               cGreen;
     {
         unsigned char               cRed;
         unsigned char               cGreen;


@@ -1355,7 +1366,7 @@ bool wxMask::Create(
         ::GpiDeleteBitmap((HBITMAP) m_hMaskBitmap);
         m_hMaskBitmap = 0;
     }
         ::GpiDeleteBitmap((HBITMAP) m_hMaskBitmap);
         m_hMaskBitmap = 0;
     }

-    if (!rBitmap.Ok())
+    if (!rBitmap.IsOk())

     {
         return false;
     }
     {
         return false;
     }


@@ -1428,8 +1439,8 @@ bool wxMask::Create(
 // ----------------------------------------------------------------------------
 
 bool wxBitmapHandler::Create( wxGDIImage* pImage,
 // ----------------------------------------------------------------------------
 
 bool wxBitmapHandler::Create( wxGDIImage* pImage,

-                              void*       pData,
-                              long        WXUNUSED(lFlags),
+                              const void* pData,
+                              wxBitmapType lType,

                               int         nWidth,
                               int         nHeight,
                               int         nDepth)
                               int         nWidth,
                               int         nHeight,
                               int         nDepth)


@@ -1440,6 +1451,7 @@ bool wxBitmapHandler::Create( wxGDIImage* pImage,
 
     return(pBitmap ? Create( pBitmap
                             ,pData
 
     return(pBitmap ? Create( pBitmap
                             ,pData

+                            ,lType

                             ,nWidth
                             ,nHeight
                             ,nDepth
                             ,nWidth
                             ,nHeight
                             ,nDepth


@@ -1449,7 +1461,7 @@ bool wxBitmapHandler::Create( wxGDIImage* pImage,
 bool wxBitmapHandler::Load(
   wxGDIImage*                       pImage
 , int                               nId
 bool wxBitmapHandler::Load(
   wxGDIImage*                       pImage
 , int                               nId

-, long                              lFlags
+, wxBitmapType                      lFlags

 , int                               nWidth
 , int                               nHeight
 )
 , int                               nWidth
 , int                               nHeight
 )


@@ -1467,10 +1479,10 @@ bool wxBitmapHandler::Load(
 }
 
 bool wxBitmapHandler::Save(
 }
 
 bool wxBitmapHandler::Save(

-  wxGDIImage*                       pImage
+  const wxGDIImage*                 pImage

 , const wxString&                   rName
 , const wxString&                   rName

-, int                               lType
-)
+, wxBitmapType                      lType
+) const

 {
     wxBitmap*                       pBitmap = wxDynamicCast( pImage
                                                             ,wxBitmap
 {
     wxBitmap*                       pBitmap = wxDynamicCast( pImage
                                                             ,wxBitmap


@@ -1484,8 +1496,8 @@ bool wxBitmapHandler::Save(
 
 bool wxBitmapHandler::Create(
   wxBitmap*                         WXUNUSED(pBitmap)
 
 bool wxBitmapHandler::Create(
   wxBitmap*                         WXUNUSED(pBitmap)

-, void*                             WXUNUSED(pData)
-, long                              WXUNUSED(lType)
+, const void*                       WXUNUSED(pData)
+, wxBitmapType                      WXUNUSED(lType)

 , int                               WXUNUSED(nWidth)
 , int                               WXUNUSED(nHeight)
 , int                               WXUNUSED(nDepth)
 , int                               WXUNUSED(nWidth)
 , int                               WXUNUSED(nHeight)
 , int                               WXUNUSED(nDepth)


@@ -1497,7 +1509,18 @@ bool wxBitmapHandler::Create(
 bool wxBitmapHandler::LoadFile(
   wxBitmap*                         WXUNUSED(pBitmap)
 , int                               WXUNUSED(nId)
 bool wxBitmapHandler::LoadFile(
   wxBitmap*                         WXUNUSED(pBitmap)
 , int                               WXUNUSED(nId)

-, long                              WXUNUSED(lType)
+, wxBitmapType                      WXUNUSED(lType)
+, int                               WXUNUSED(nDesiredWidth)
+, int                               WXUNUSED(nDesiredHeight)
+)
+{
+    return false;
+}
+
+bool wxBitmapHandler::LoadFile(
+  wxBitmap*                         WXUNUSED(pBitmap)
+, const wxString&                   WXUNUSED(rName)
+, wxBitmapType                      WXUNUSED(lType)

 , int                               WXUNUSED(nDesiredWidth)
 , int                               WXUNUSED(nDesiredHeight)
 )
 , int                               WXUNUSED(nDesiredWidth)
 , int                               WXUNUSED(nDesiredHeight)
 )


@@ -1508,9 +1531,9 @@ bool wxBitmapHandler::LoadFile(
 bool wxBitmapHandler::SaveFile(
   wxBitmap*                         WXUNUSED(pBitmap)
 , const wxString&                   WXUNUSED(rName)
 bool wxBitmapHandler::SaveFile(
   wxBitmap*                         WXUNUSED(pBitmap)
 , const wxString&                   WXUNUSED(rName)

-, int                               WXUNUSED(nType)
+, wxBitmapType                      WXUNUSED(nType)

 , const wxPalette*                  WXUNUSED(pPalette)
 , const wxPalette*                  WXUNUSED(pPalette)

-)
+) const

 {
     return false;
 }
 {
     return false;
 }


@@ -1526,7 +1549,7 @@ HBITMAP wxInvertMask(
 {
     HBITMAP                         hBmpInvMask = 0;
 
 {
     HBITMAP                         hBmpInvMask = 0;
 

-    wxCHECK_MSG( hBmpMask, 0, _T("invalid bitmap in wxInvertMask") );
+    wxCHECK_MSG( hBmpMask, 0, wxT("invalid bitmap in wxInvertMask") );

 
     //
     // Get width/height from the bitmap if not given
 
     //
     // Get width/height from the bitmap if not given


@@ -1585,3 +1608,84 @@ HBITMAP wxInvertMask(
 
     return hBmpInvMask;
 } // end of WxWinGdi_InvertMask
 
     return hBmpInvMask;
 } // end of WxWinGdi_InvertMask

+
+HBITMAP wxCopyBmp( HBITMAP hBmp, bool flip, int nWidth, int nHeight )
+{
+    wxCHECK_MSG( hBmp, 0, wxT("invalid bitmap in wxCopyBmp") );
+
+    //
+    // Get width/height from the bitmap if not given
+    //
+    if (!nWidth || !nHeight)
+    {
+        BITMAPINFOHEADER2 vBmhdr;
+
+        vBmhdr.cbFix  = 16;
+        ::GpiQueryBitmapInfoHeader( hBmp,
+                                    &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,      nHeight},
+                                    {nWidth, 0},
+                                    {0,      0},
+                                    {nWidth, nHeight} };
+    if (!flip)
+    {
+        vPoint[0].y = 0;
+        vPoint[1].y = nHeight;
+    }
+    memset(&vBmih, '\0', 16);
+    vBmih.cbFix     = 16;
+    vBmih.cx        = nWidth;
+    vBmih.cy        = nHeight;
+    vBmih.cPlanes   = 1;
+    vBmih.cBitCount = 24;
+
+    HBITMAP hInvBmp = ::GpiCreateBitmap(  hPSDst,
+                                          &vBmih,
+                                          0L,
+                                          NULL,
+                                          NULL  );
+
+    ::GpiSetBitmap(hPSSrc, (HBITMAP) hBmp);
+    ::GpiSetBitmap(hPSDst, (HBITMAP) hInvBmp);
+
+    ::GpiBitBlt(  hPSDst,
+                  hPSSrc,
+                  4L,
+                  vPoint,
+                  ROP_SRCCOPY,
+                  BBO_IGNORE  );
+
+    ::GpiDestroyPS(hPSSrc);
+    ::GpiDestroyPS(hPSDst);
+    ::DevCloseDC(hDCSrc);
+    ::DevCloseDC(hDCDst);
+
+    return hInvBmp;
+} // end of wxFlipBmp