X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/4e0f4f97d7f279d85f0db1639af08c272ad8c108..19e30148e18cc99296b26503c155e5cef59045f4:/src/os2/bitmap.cpp?ds=sidebyside diff --git a/src/os2/bitmap.cpp b/src/os2/bitmap.cpp index c2c99bb980..53a1a01dc9 100644 --- a/src/os2/bitmap.cpp +++ b/src/os2/bitmap.cpp @@ -9,6 +9,10 @@ // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// +#ifdef __GNUG__ + #pragma implementation "bitmap.h" +#endif + // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" @@ -29,6 +33,7 @@ //#include "wx/msw/dib.h" #include "wx/image.h" +#include "wx/xpmdecod.h" // ---------------------------------------------------------------------------- // macros @@ -53,7 +58,8 @@ wxBitmapRefData::wxBitmapRefData() m_pSelectedInto = NULL; m_nNumColors = 0; m_pBitmapMask = NULL; -} + m_hBitmap = (WXHBITMAP) NULL; +} // end of wxBitmapRefData::wxBitmapRefData void wxBitmapRefData::Free() { @@ -62,7 +68,7 @@ void wxBitmapRefData::Free() if (m_hBitmap) { - if ( !::GpiDeleteBitmap((HBITMAP)m_hBitmap) ) + if (!::GpiDeleteBitmap((HBITMAP)m_hBitmap)) { wxLogLastError("GpiDeleteBitmap(hbitmap)"); } @@ -70,7 +76,7 @@ void wxBitmapRefData::Free() delete m_pBitmapMask; m_pBitmapMask = NULL; -} +} // end of wxBitmapRefData::Free // ---------------------------------------------------------------------------- // wxBitmap creation @@ -79,33 +85,38 @@ 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); -} +} // 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_hBitmap = (WXHBITMAP)rIcon.GetHandle(); - // no mask??? - pRefData->m_pBitmapMask = new wxMask(); + pRefData->m_nWidth = nWidth; + pRefData->m_nHeight = nHeight; + pRefData->m_nDepth = wxDisplayDepth(); -#if WXWIN_COMPATIBILITY_2 - pRefData->m_bOk = TRUE; -#endif // WXWIN_COMPATIBILITY_2 + pRefData->m_hBitmap = (WXHBITMAP)SIconInfo.hbmColor; + + // + // No mask in the Info struct in OS/2 + // return(TRUE); -} +} // end of wxBitmap::CopyFromIconOrCursor bool wxBitmap::CopyFromCursor( const wxCursor& rCursor @@ -116,7 +127,7 @@ bool wxBitmap::CopyFromCursor( if (!rCursor.Ok()) return(FALSE); return(CopyFromIconOrCursor(rCursor)); -} +} // end of wxBitmap::CopyFromCursor bool wxBitmap::CopyFromIcon( const wxIcon& rIcon @@ -127,24 +138,18 @@ 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(); @@ -156,65 +161,106 @@ 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, (PSZ)"*", 1L, (PDEVOPENDATA)&vDop, 0L); 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; + memset(&vHeader, '\0', sizeof(BITMAPINFOHEADER2)); + vHeader.cbFix = sizeof(vHeader); + vHeader.cx = (USHORT)nWidth; + vHeader.cy = (USHORT)nHeight; + vHeader.cPlanes = 1L; + vHeader.cBitCount = nDepth; + vHeader.usReserved = 0; + vHeader.ulCompression = BCA_UNCOMP; + vHeader.usRecording = BRA_BOTTOMUP; + vHeader.usRendering = BRH_NOTHALFTONED; + vHeader.ulColorEncoding = BCE_RGB; + vHeader.ulIdentifier = 0; + + memset(&vInfo, '\0', sizeof(BITMAPINFO2)); + vInfo.cbFix = sizeof(vInfo); + vInfo.cx = (USHORT)nWidth; + vInfo.cy = (USHORT)nHeight; + vInfo.cPlanes = 1L; + vInfo.cBitCount = nDepth; + vInfo.usReserved = 0; + vInfo.ulCompression = BCA_UNCOMP; + vInfo.usRecording = BRA_BOTTOMUP; + vInfo.usRendering = BRH_NOTHALFTONED; + vInfo.ulColorEncoding = BCE_RGB; + vInfo.ulIdentifier = 0; + + HBITMAP hBmp = ::GpiCreateBitmap(hPs, &vHeader, CBM_INIT, (PBYTE)pzData, &vInfo); - HBITMAP hBmp = ::GpiCreateBitmap(hPs, &vHeader, 0L, NULL, &vInfo); if (!hBmp) { wxLogLastError("CreateBitmap"); } + ::WinReleasePS(hPs); 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 @@ -228,7 +274,7 @@ wxBitmap::wxBitmap( ,nH ,nD ); -} +} // end of wxBitmap::wxBitmap wxBitmap::wxBitmap( void* pData @@ -246,7 +292,7 @@ wxBitmap::wxBitmap( ,nHeight ,nDepth ); -} +} // end of wxBitmap::wxBitmap wxBitmap::wxBitmap( const wxString& rFilename @@ -258,7 +304,7 @@ wxBitmap::wxBitmap( LoadFile( rFilename ,(int)lType ); -} +} // end of wxBitmap::wxBitmap bool wxBitmap::Create( int nW @@ -268,63 +314,63 @@ 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; 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); + + memset(&vHeader, '\0', sizeof(BITMAPINFOHEADER2)); + vHeader.cbFix = sizeof(BITMAPINFOHEADER2); + vHeader.cx = nW; + vHeader.cy = nH; + vHeader.cPlanes = 1; + vHeader.cBitCount = 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); + + memset(&vHeader, '\0', sizeof(BITMAPINFOHEADER2)); + vHeader.cbFix = sizeof(BITMAPINFOHEADER2); + 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); @@ -333,7 +379,28 @@ bool wxBitmap::Create( #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 @@ -367,11 +434,11 @@ bool wxBitmap::LoadFile( if (!vImage.LoadFile(rFilename, lType) || !vImage.Ok() ) return(FALSE); - *this = vImage.ConvertToBitmap(); + *this = wxBitmap(vImage); return(TRUE); } -} +} // end of wxBitmap::LoadFile bool wxBitmap::Create( void* pData @@ -404,7 +471,7 @@ bool wxBitmap::Create( ,nHeight ,nDepth )); -} +} // end of wxBitmap::Create bool wxBitmap::SaveFile( const wxString& rFilename @@ -427,7 +494,7 @@ bool wxBitmap::SaveFile( else { // FIXME what about palette? shouldn't we use it? - wxImage vImage(*this); + wxImage vImage = ConvertToImage(); if (!vImage.Ok()) return(FALSE); @@ -436,7 +503,593 @@ bool wxBitmap::SaveFile( ,lType )); } -} +} // end of wxBitmap::SaveFile + + +// ---------------------------------------------------------------------------- +// wxImage-wxBitmap convertion +// ---------------------------------------------------------------------------- + +bool wxBitmap::CreateFromImage ( + const wxImage& rImage +, int nDepth +) +{ + 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; + } + + // + // 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) + 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; + + // + // Fill in the DIB header + // + memset(&vHeader, '\0', sizeof(BITMAPINFOHEADER2)); + vHeader.cbFix = sizeof(vHeader); + vHeader.cx = (USHORT)nWidth; + vHeader.cy = (USHORT)nHeight; + vHeader.cPlanes = 1L; + vHeader.cBitCount = 24; + vHeader.ulCompression = BCA_UNCOMP; + vHeader.cbImage = nBytePerLine * nHeight; + vHeader.cclrUsed = 0; + + // + // These seem not really needed for our purpose here. + // + vHeader.cxResolution = 0; + vHeader.cyResolution = 0; + vHeader.cclrImportant = 0; + vHeader.usUnits = BRU_METRIC; + vHeader.usReserved = 0; + vHeader.cSize1 = 0; + vHeader.cSize2 = 0; + vHeader.usRecording = BRA_BOTTOMUP; + vHeader.usRendering = BRH_NOTHALFTONED; + vHeader.ulColorEncoding = BCE_RGB; + vHeader.ulIdentifier = 0; + + // + // Memory for DIB data + // + unsigned char* pucBits; + + pucBits = (unsigned char *)malloc(vHeader.cbImage); + if(!pucBits) + { + wxFAIL_MSG(wxT("could not allocate memory for DIB")); + return FALSE; + } + + // + // 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); + HBITMAP hBmp; + HBITMAP hBmpOld; + + hBmp = ::GpiCreateBitmap( hPS + ,&vHeader + ,0L + ,NULL + ,NULL + ); + hBmpOld = ::GpiSetBitmap(hPS, hBmp); +#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; + + 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 + // + POINTL vPoint[4] = { 0, nOrigin, + nWidth, nHeight, + 0, 0, nWidth, nHeight + }; + + ::GpiBitBlt( hPS + ,hPS + ,4 + ,vPoint + ,ROP_SRCCOPY + ,BBO_IGNORE + ); + 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()) + { + memset(&vHeader, '\0', sizeof(BITMAPINFOHEADER2)); + vHeader.cbFix = sizeof(BITMAPINFOHEADER2); + vHeader.cx = nWidth; + vHeader.cy = nHeight; + vHeader.cPlanes = 1; + vHeader.cBitCount = 1; + hBmp = ::GpiCreateBitmap( hPS + ,&vHeader + ,0L + ,NULL + ,NULL + ); + hBmpOld = ::GpiSetBitmap(hPS, hBmp); + if (nNumDIB == 1) + nHeight = nBmpHeight; + else + nHeight = nSizeLimit / nBytePerLine; + vHeader.cy = (DWORD)(nHeight); + vHeader.cbImage = nBytePerLine * 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++) + { + if ((*(ptdata++) != cRed) || (*(ptdata++) != cGreen) || (*(ptdata++) != cBlue)) + { + *(ptbits++) = cOne; + *(ptbits++) = cOne; + *(ptbits++) = cOne; + } + else + { + *(ptbits++) = cZero; + *(ptbits++) = cZero; + *(ptbits++) = cZero; + } + } + for (i = 0; i < nPadding; i++) + *(ptbits++) = cZero; + } + POINTL vPoint[4] = { 0, nOrigin, + nWidth, nHeight, + 0, 0, nWidth, nHeight + }; + + ::GpiBitBlt( hPS + ,hPS + ,4 + ,vPoint + ,ROP_SRCCOPY + ,BBO_IGNORE + ); + nOrigin += nHeight; + } + + // + // Create a wxMask object + // + wxMask* pMask = new wxMask(); + + pMask->SetMaskBitmap((WXHBITMAP)hBmp); + SetMask(pMask); + hBmpOld = ::GpiSetBitmap(hPS, hBmp); + } + + // + // Free allocated resources + // + ::GpiSetBitmap(hPS, NULLHANDLE); + ::GpiDestroyPS(hPS); + ::DevCloseDC(hDC); + free(pucBits); + return TRUE; +} // end of wxBitmap::CreateFromImage + +wxImage wxBitmap::ConvertToImage() const +{ + wxImage vImage; + + 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; + HDC hDCMem; + PSZ pszData[4] = { "Display", NULL, NULL, NULL }; + HPS hPSMem; + HPS hPS; + SIZEL vSizlPage = {0,0}; + HBITMAP hBitmap; + + 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', sizeof(BITMAPINFOHEADER2)); + vDIBh.cbFix = sizeof(BITMAPINFOHEADER2); + vDIBh.cx = nWidth; + vDIBh.cy = nHeight; + vDIBh.cPlanes = 1; + vDIBh.cbImage = nBytePerLine * nHeight; + vDIBh.cBitCount = 24; + + memset(&vDIBInfo, '\0', sizeof(BITMAPINFO2)); + vDIBInfo.cbFix = sizeof(BITMAPINFO2); + vDIBInfo.cPlanes = 1; + vDIBInfo.cBitCount = 24; + vDIBInfo.ulCompression = BCA_UNCOMP; + vDIBInfo.usReserved = 0; + vDIBInfo.usRecording = BRA_BOTTOMUP; + vDIBInfo.usRendering = BRH_NOTHALFTONED; + vDIBInfo.ulColorEncoding = BCE_RGB; + vDIBInfo.ulIdentifier = 0; + + lpBits = (unsigned char *)malloc(vDIBh.cbImage); + if (!lpBits) + { + wxFAIL_MSG(wxT("could not allocate data for DIB")); + free(pData); + return wxNullImage; + } + + // + // Copy data from the device-dependent bitmap to the DIB + // + hDCMem = ::DevOpenDC( vHabmain + ,OD_MEMORY + ,"*" + ,4 + ,(PDEVOPENDATA)pszData + ,NULLHANDLE + ); + hPSMem = ::GpiCreatePS( vHabmain + ,hDCMem + ,&vSizlPage + ,PU_PELS | GPIA_ASSOC | GPIT_MICRO + ); + hBitmap = ::GpiCreateBitmap( hPSMem + ,&vDIBh + ,0L + ,NULL + ,NULL + ); + lScans = ::GpiQueryBitmapBits( hPSMem + ,0L + ,(LONG)nHeight + ,(PBYTE)lpBits + ,&vDIBInfo + ); + + // + // 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; + } + + // + // 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 + ,"*" + ,4 + ,(PDEVOPENDATA)pszData + ,NULLHANDLE + ); + HPS hMemPS = ::GpiCreatePS( vHabmain + ,hMemDC + ,&vSizlPage + ,PU_PELS | GPIA_ASSOC | GPIT_MICRO + ); + ::GpiSetColor(hMemPS, OS2RGB(0, 0, 0)); + ::GpiSetBackColor(hMemPS, OS2RGB(255, 255, 255) ); + ::GpiQueryBitmapBits( hPSMem + ,0L + ,(LONG)nHeight + ,(PBYTE)lpBits + ,&vDIBInfo + ); + ::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 + // + ::GpiDestroyPS(hPSMem); + ::DevCloseDC(hDCMem); + 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] = { rRect.x, rRect.y, + rRect.x + rRect.width, rRect.y + rRect.height, + 0, 0, GetWidth(), GetHeight() + }; + + ::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 = 1; + + 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 @@ -449,7 +1102,7 @@ void wxBitmap::SetQuality( EnsureHasData(); GetBitmapData()->m_nQuality = nQ; -} +} // end of wxBitmap::SetQuality #if WXWIN_COMPATIBILITY_2 void wxBitmap::SetOk( @@ -459,7 +1112,7 @@ void wxBitmap::SetOk( EnsureHasData(); GetBitmapData()->m_bOk = bOk; -} +} // end of wxBitmap::SetOk #endif // WXWIN_COMPATIBILITY_2 void wxBitmap::SetPalette( @@ -469,7 +1122,7 @@ void wxBitmap::SetPalette( EnsureHasData(); GetBitmapData()->m_vBitmapPalette = rPalette; -} +} // end of wxBitmap::SetPalette void wxBitmap::SetMask( wxMask* pMask @@ -478,35 +1131,14 @@ 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 @@ -515,7 +1147,7 @@ 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 @@ -528,7 +1160,7 @@ wxMask::wxMask( Create( rBitmap ,rColour ); -} +} // end of wxMask::wxMask // Construct a mask from a bitmap and a palette index indicating // the transparent area @@ -541,7 +1173,7 @@ wxMask::wxMask( Create( rBitmap ,nPaletteIndex ); -} +} // end of wxMask::wxMask // Construct a mask from a mono bitmap (copies the bitmap). wxMask::wxMask( @@ -550,23 +1182,29 @@ 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) { @@ -577,30 +1215,37 @@ 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 = 1; + + 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 @@ -637,7 +1282,7 @@ bool wxMask::Create( } } return(FALSE); -} +} // end of wxMask::Create // Create a mask from a bitmap and a colour indicating // the transparent area @@ -646,10 +1291,21 @@ 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); + POINTL vPoint[4] = { 0 ,0, rBitmap.GetWidth(), rBitmap.GetHeight(), + 0, 0, rBitmap.GetWidth(), rBitmap.GetHeight() + }; if (m_hMaskBitmap) { @@ -661,58 +1317,68 @@ 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 @@ -811,3 +1477,74 @@ 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', sizeof(BITMAPINFOHEADER2)); + vBmih.cbFix = sizeof(BITMAPINFOHEADER2); + vBmih.cx = nWidth; + vBmih.cy = nHeight; + vBmih.cPlanes = 1; + vBmih.cBitCount = 1; + + 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 +