fixing osx_cocoa

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

diff --git a/src/msw/bitmap.cpp b/src/msw/bitmap.cpp
index cbb71c3f2e62abde0c5f78222c5ce517e66da6b5..10756fee7ca3cbb1e2bd3bb850efac72e281a58e 100644 (file)
--- a/src/msw/bitmap.cpp
+++ b/src/msw/bitmap.cpp
@@ -1,458 +1,1405 @@
-/////////////////////////////////////////////////////////////////////////////
-// Name:        bitmap.cpp
+////////////////////////////////////////////////////////////////////////////
+// Name:        src/msw/bitmap.cpp

 // Purpose:     wxBitmap
 // Author:      Julian Smart
 // Modified by:
 // Created:     04/01/98
 // RCS-ID:      $Id$
 // Purpose:     wxBitmap
 // Author:      Julian Smart
 // Modified by:
 // Created:     04/01/98
 // RCS-ID:      $Id$

-// Copyright:   (c) Julian Smart and Markus Holzem
-// Licence:     wxWindows license
+// Copyright:   (c) Julian Smart
+// Licence:     wxWindows licence

 /////////////////////////////////////////////////////////////////////////////
 
 /////////////////////////////////////////////////////////////////////////////
 

-#ifdef __GNUG__
-#pragma implementation "bitmap.h"
-#endif
+// ============================================================================
+// declarations
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------

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

-#pragma hdrstop
+    #pragma hdrstop

 #endif
 
 #endif
 

-#ifndef WX_PRECOMP
-#include <stdio.h>
-#include "wx/setup.h"
-#include "wx/list.h"
-#include "wx/utils.h"
-#include "wx/app.h"
-#include "wx/palette.h"

 #include "wx/bitmap.h"
 #include "wx/bitmap.h"

-#include "wx/icon.h"
+
+#ifndef WX_PRECOMP
+    #include <stdio.h>
+
+    #include "wx/list.h"
+    #include "wx/utils.h"
+    #include "wx/app.h"
+    #include "wx/palette.h"
+    #include "wx/dcmemory.h"
+    #include "wx/icon.h"
+    #include "wx/log.h"
+    #include "wx/image.h"

 #endif
 #endif

-#include "wx/image.h"

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

-#include "wx/log.h"
+#include "wx/msw/dc.h"
+
+#if wxUSE_WXDIB
+    #include "wx/msw/dib.h"
+#endif
+
+#ifdef wxHAS_RAW_BITMAP
+    #include "wx/rawbmp.h"
+#endif
+
+// missing from mingw32 header
+#ifndef CLR_INVALID
+    #define CLR_INVALID ((COLORREF)-1)
+#endif // no CLR_INVALID
+
+// ----------------------------------------------------------------------------
+// wxBitmapRefData
+// ----------------------------------------------------------------------------
+
+class WXDLLEXPORT wxBitmapRefData : public wxGDIImageRefData
+{
+public:
+    wxBitmapRefData();
+    wxBitmapRefData(const wxBitmapRefData& data);
+    virtual ~wxBitmapRefData() { Free(); }
+
+    virtual void Free();
+
+    // set the mask object to use as the mask, we take ownership of it
+    void SetMask(wxMask *mask)
+    {
+        delete m_bitmapMask;
+        m_bitmapMask = mask;
+    }
+
+    // set the HBITMAP to use as the mask
+    void SetMask(HBITMAP hbmpMask)
+    {
+        SetMask(new wxMask((WXHBITMAP)hbmpMask));
+    }

 
 

-#include "assert.h"
+    // return the mask
+    wxMask *GetMask() const { return m_bitmapMask; }

 
 

-#if wxUSE_XPM_IN_MSW
-#define FOR_MSW 1
-#include "../src/xpm/xpm34.h"
+public:
+#if wxUSE_PALETTE
+    wxPalette     m_bitmapPalette;
+#endif // wxUSE_PALETTE
+
+    // MSW-specific
+    // ------------
+
+#if wxDEBUG_LEVEL
+    // this field is solely for error checking: we detect selecting a bitmap
+    // into more than one DC at once or deleting a bitmap still selected into a
+    // DC (both are serious programming errors under Windows)
+    wxDC         *m_selectedInto;
+#endif // wxDEBUG_LEVEL
+
+#if wxUSE_WXDIB
+    // when GetRawData() is called for a DDB we need to convert it to a DIB
+    // first to be able to provide direct access to it and we cache that DIB
+    // here and convert it back to DDB when UngetRawData() is called
+    wxDIB *m_dib;

 #endif
 
 #endif
 

-#include "wx/msw/dib.h"
+    // true if we have alpha transparency info and can be drawn using
+    // AlphaBlend()
+    bool m_hasAlpha;
+
+    // true if our HBITMAP is a DIB section, false if it is a DDB
+    bool m_isDIB;
+
+private:
+    // optional mask for transparent drawing
+    wxMask       *m_bitmapMask;
+
+
+    // not implemented
+    wxBitmapRefData& operator=(const wxBitmapRefData&);
+};
+
+// ----------------------------------------------------------------------------
+// macros
+// ----------------------------------------------------------------------------

 
 

-#if !USE_SHARED_LIBRARIES

 IMPLEMENT_DYNAMIC_CLASS(wxBitmap, wxGDIObject)
 IMPLEMENT_DYNAMIC_CLASS(wxMask, wxObject)
 IMPLEMENT_DYNAMIC_CLASS(wxBitmap, wxGDIObject)
 IMPLEMENT_DYNAMIC_CLASS(wxMask, wxObject)

+
+IMPLEMENT_DYNAMIC_CLASS(wxBitmapHandler, wxObject)
+
+// ============================================================================
+// implementation
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// helper functions
+// ----------------------------------------------------------------------------
+
+// decide whether we should create a DIB or a DDB for the given parameters
+//
+// NB: we always use DIBs under Windows CE as this is much simpler (even if
+//     also less efficient...) and we obviously can't use them if there is no
+//     DIB support compiled in at all
+#ifdef __WXWINCE__
+    static inline bool wxShouldCreateDIB(int, int, int, WXHDC) { return true; }
+
+    #define ALWAYS_USE_DIB
+#elif !wxUSE_WXDIB
+    // no sense in defining wxShouldCreateDIB() as we can't compile code
+    // executed if it is true, so we have to use #if's anyhow
+    #define NEVER_USE_DIB
+#else // wxUSE_WXDIB && !__WXWINCE__
+    static inline bool wxShouldCreateDIB(int w, int h, int d, WXHDC hdc)
+    {
+        // here is the logic:
+        //
+        //  (a) if hdc is specified, the caller explicitly wants DDB
+        //  (b) otherwise, create a DIB if depth >= 24 (we don't support 16bpp
+        //      or less DIBs anyhow)
+        //  (c) finally, create DIBs under Win9x even if the depth hasn't been
+        //      explicitly specified but the current display depth is 24 or
+        //      more and the image is "big", i.e. > 16Mb which is the
+        //      theoretical limit for DDBs under Win9x
+        //
+        // consequences (all of which seem to make sense):
+        //
+        //  (i)     by default, DDBs are created (depth == -1 usually)
+        //  (ii)    DIBs can be created by explicitly specifying the depth
+        //  (iii)   using a DC always forces creating a DDB
+        return !hdc &&
+                (d >= 24 ||
+                    (d == -1 &&
+                        wxDIB::GetLineSize(w, wxDisplayDepth())*h > 16*1024*1024));
+    }
+
+    #define SOMETIMES_USE_DIB
+#endif // different DIB usage scenarious
+
+// ----------------------------------------------------------------------------
+// wxBitmapRefData
+// ----------------------------------------------------------------------------
+
+wxBitmapRefData::wxBitmapRefData()
+{
+#if wxDEBUG_LEVEL
+    m_selectedInto = NULL;

 #endif
 #endif

+    m_bitmapMask = NULL;
+
+    m_hBitmap = (WXHBITMAP) NULL;
+#if wxUSE_WXDIB
+    m_dib = NULL;
+#endif
+
+    m_isDIB =
+    m_hasAlpha = false;
+}

 
 

-wxBitmapRefData::wxBitmapRefData(void)
+wxBitmapRefData::wxBitmapRefData(const wxBitmapRefData& data)
+               : wxGDIImageRefData(data)

 {
 {

-  m_ok = FALSE;
-  m_width = 0;
-  m_height = 0;
-  m_depth = 0;
-  m_quality = 0;
-  m_hBitmap = 0 ;
-  m_selectedInto = NULL;
-  m_numColors = 0;
-  m_bitmapMask = NULL;
+#if wxDEBUG_LEVEL
+    m_selectedInto = NULL;
+#endif
+
+    // (deep) copy the mask if present
+    m_bitmapMask = NULL;
+    if (data.m_bitmapMask)
+        m_bitmapMask = new wxMask(*data.m_bitmapMask);
+
+    // FIXME: we don't copy m_hBitmap currently but we should, see wxBitmap::
+    //        CloneGDIRefData()
+
+    wxASSERT_MSG( !data.m_isDIB,
+                    wxT("can't copy bitmap locked for raw access!") );
+    m_isDIB = false;
+
+    m_hasAlpha = data.m_hasAlpha;

 }
 
 }
 

-wxBitmapRefData::~wxBitmapRefData(void)
+void wxBitmapRefData::Free()

 {
 {

-  if (m_selectedInto)
-  {
-    char buf[200];
-    sprintf(buf, "Bitmap was deleted without selecting out of wxMemoryDC %X.", (unsigned int) m_selectedInto);
-    wxFatalError(buf);
-  }
-  if (m_hBitmap)
-  {
-    DeleteObject((HBITMAP) m_hBitmap);
-  }
-  m_hBitmap = 0 ;
-
-  if (m_bitmapMask)
-//    delete m_bitmapMask;    // this line cause an exception
-  m_bitmapMask = NULL;
+    wxASSERT_MSG( !m_selectedInto,
+                  wxT("deleting bitmap still selected into wxMemoryDC") );
+
+#if wxUSE_WXDIB
+    wxASSERT_MSG( !m_dib, wxT("forgot to call wxBitmap::UngetRawData()!") );
+#endif
+
+    if ( m_hBitmap)
+    {
+        if ( !::DeleteObject((HBITMAP)m_hBitmap) )
+        {
+            wxLogLastError(wxT("DeleteObject(hbitmap)"));
+        }
+    }
+
+    wxDELETE(m_bitmapMask);
+}
+
+// ----------------------------------------------------------------------------
+// wxBitmap creation
+// ----------------------------------------------------------------------------

 
 

+wxGDIImageRefData *wxBitmap::CreateData() const
+{
+    return new wxBitmapRefData;

 }
 
 }
 

-wxList wxBitmap::sm_handlers;
+wxGDIRefData *wxBitmap::CloneGDIRefData(const wxGDIRefData *dataOrig) const
+{
+    const wxBitmapRefData *
+        data = static_cast<const wxBitmapRefData *>(dataOrig);
+    if ( !data )
+        return NULL;
+
+    // FIXME: this method is backwards, it should just create a new
+    //        wxBitmapRefData using its copy ctor but instead it modifies this
+    //        bitmap itself and then returns its m_refData -- which works, of
+    //        course (except in !wxUSE_WXDIB), but is completely illogical
+    wxBitmap *self = const_cast<wxBitmap *>(this);
+
+    wxBitmapRefData *selfdata;
+#if wxUSE_WXDIB
+    // copy the other bitmap
+    if ( data->m_hBitmap )
+    {
+        wxDIB dib((HBITMAP)(data->m_hBitmap));
+        self->CopyFromDIB(dib);
+
+        selfdata = static_cast<wxBitmapRefData *>(m_refData);
+        selfdata->m_hasAlpha = data->m_hasAlpha;
+    }
+    else
+#endif // wxUSE_WXDIB
+    {
+        // copy the bitmap data
+        selfdata = new wxBitmapRefData(*data);
+        self->m_refData = selfdata;
+    }
+
+    // copy also the mask
+    wxMask * const maskSrc = data->GetMask();
+    if ( maskSrc )
+    {
+        selfdata->SetMask(new wxMask(*maskSrc));
+    }

 
 

-wxBitmap::wxBitmap(void)
+    return selfdata;
+}
+
+bool wxBitmap::CopyFromIconOrCursor(const wxGDIImage& icon,
+                                    wxBitmapTransparency transp)

 {
 {

-  if ( wxTheBitmapList )
-    wxTheBitmapList->AddBitmap(this);
+#if !defined(__WXMICROWIN__) && !defined(__WXWINCE__)
+    // it may be either HICON or HCURSOR
+    HICON hicon = (HICON)icon.GetHandle();
+
+    ICONINFO iconInfo;
+    if ( !::GetIconInfo(hicon, &iconInfo) )
+    {
+        wxLogLastError(wxT("GetIconInfo"));
+
+        return false;
+    }
+
+    wxBitmapRefData *refData = new wxBitmapRefData;
+    m_refData = refData;
+
+    int w = icon.GetWidth(),
+        h = icon.GetHeight();
+
+    refData->m_width = w;
+    refData->m_height = h;
+    refData->m_depth = wxDisplayDepth();
+
+    refData->m_hBitmap = (WXHBITMAP)iconInfo.hbmColor;
+
+    switch ( transp )
+    {
+        default:
+            wxFAIL_MSG( wxT("unknown wxBitmapTransparency value") );
+
+        case wxBitmapTransparency_None:
+            // nothing to do, refData->m_hasAlpha is false by default
+            break;
+
+        case wxBitmapTransparency_Auto:
+#if wxUSE_WXDIB
+            // If the icon is 32 bits per pixel then it may have alpha channel
+            // data, although there are some icons that are 32 bpp but have no
+            // alpha... So convert to a DIB and manually check the 4th byte for
+            // each pixel.
+            {
+                BITMAP bm;
+                if ( ::GetObject(iconInfo.hbmColor, sizeof(bm), &bm) &&
+                        (bm.bmBitsPixel == 32) )
+                {
+                    wxDIB dib(iconInfo.hbmColor);
+                    if (dib.IsOk())
+                    {
+                        const unsigned char* pixels = dib.GetData();
+                        for (int idx = 0; idx < w*h*4; idx+=4)
+                        {
+                            if (pixels[idx+3] != 0)
+                            {
+                                // If there is an alpha byte that is non-zero
+                                // then set the alpha flag and stop checking
+                                refData->m_hasAlpha = true;
+                                break;
+                            }
+                        }
+                    }
+                }
+            }
+            break;
+#endif // wxUSE_WXDIB
+
+        case wxBitmapTransparency_Always:
+            refData->m_hasAlpha = true;
+            break;
+    }
+
+    if ( !refData->m_hasAlpha )
+    {
+        // the mask returned by GetIconInfo() is inverted compared to the usual
+        // wxWin convention
+        refData->SetMask(wxInvertMask(iconInfo.hbmMask, w, h));
+    }
+
+    // delete the old one now as we don't need it any more
+    ::DeleteObject(iconInfo.hbmMask);
+
+    return true;
+#else // __WXMICROWIN__ || __WXWINCE__
+    wxUnusedVar(icon);
+    wxUnusedVar(transp);
+
+    return false;
+#endif // !__WXWINCE__/__WXWINCE__

 }
 
 }
 

-wxBitmap::~wxBitmap(void)
+bool wxBitmap::CopyFromCursor(const wxCursor& cursor, wxBitmapTransparency transp)

 {
 {

-    if (wxTheBitmapList)
-        wxTheBitmapList->DeleteObject(this);
+    UnRef();
+
+    if ( !cursor.IsOk() )
+        return false;
+
+    return CopyFromIconOrCursor(cursor, transp);

 }
 
 }
 

-bool wxBitmap::FreeResource(bool force)
+bool wxBitmap::CopyFromIcon(const wxIcon& icon, wxBitmapTransparency transp)

 {
 {

-  if ( !M_BITMAPDATA )
-  return FALSE;
-
-  if (M_BITMAPDATA->m_selectedInto)
-  {
-    char buf[200];
-    sprintf(buf, "Bitmap %X was deleted without selecting out of wxMemoryDC %X.", (unsigned int) this, (unsigned int) M_BITMAPDATA->m_selectedInto);
-    wxFatalError(buf);
-  }
-  if (M_BITMAPDATA->m_hBitmap)
-  {
-    DeleteObject((HBITMAP) M_BITMAPDATA->m_hBitmap);
-  }
-  M_BITMAPDATA->m_hBitmap = 0 ;
-
-/*
-  if (M_BITMAPDATA->m_bitmapPalette)
-    delete M_BITMAPDATA->m_bitmapPalette;
-
-  M_BITMAPDATA->m_bitmapPalette = NULL ;
-*/
-
-  return TRUE;
+    UnRef();
+
+    if ( !icon.IsOk() )
+        return false;
+
+    return CopyFromIconOrCursor(icon, transp);

 }
 
 }
 

+#ifndef NEVER_USE_DIB

 
 

-wxBitmap::wxBitmap(const char bits[], int the_width, int the_height, int no_bits)
+bool wxBitmap::CopyFromDIB(const wxDIB& dib)

 {
 {

-  m_refData = new wxBitmapRefData;
+    wxCHECK_MSG( dib.IsOk(), false, wxT("invalid DIB in CopyFromDIB") );
+
+#ifdef SOMETIMES_USE_DIB
+    HBITMAP hbitmap = dib.CreateDDB();
+    if ( !hbitmap )
+        return false;
+#else // ALWAYS_USE_DIB
+    HBITMAP hbitmap = const_cast<wxDIB &>(dib).Detach();
+#endif // SOMETIMES_USE_DIB/ALWAYS_USE_DIB

 
 

-  M_BITMAPDATA->m_width = the_width ;
-  M_BITMAPDATA->m_height = the_height ;
-  M_BITMAPDATA->m_depth = no_bits ;
-  M_BITMAPDATA->m_numColors = 0;
+    UnRef();

 
 

-  M_BITMAPDATA->m_hBitmap = (WXHBITMAP) CreateBitmap(the_width, the_height, 1, no_bits, bits);
+    wxBitmapRefData *refData = new wxBitmapRefData;
+    m_refData = refData;

 
 

-  if (M_BITMAPDATA->m_hBitmap)
-    M_BITMAPDATA->m_ok = TRUE;
-  else
-    M_BITMAPDATA->m_ok = FALSE;
+    refData->m_width = dib.GetWidth();
+    refData->m_height = dib.GetHeight();
+    refData->m_depth = dib.GetDepth();
+
+    refData->m_hBitmap = (WXHBITMAP)hbitmap;
+
+#if wxUSE_PALETTE
+    wxPalette *palette = dib.CreatePalette();
+    if ( palette )
+    {
+        refData->m_bitmapPalette = *palette;
+    }
+
+    delete palette;
+#endif // wxUSE_PALETTE
+
+    return true;
+}

 
 

-  M_BITMAPDATA->m_selectedInto = NULL;
+#endif // NEVER_USE_DIB

 
 

-  if ( wxTheBitmapList )
-    wxTheBitmapList->AddBitmap(this);
+wxBitmap::~wxBitmap()
+{

 }
 
 }
 

-wxBitmap::wxBitmap(int w, int h, int d)
+wxBitmap::wxBitmap(const char bits[], int width, int height, int depth)

 {
 {

-  (void)Create(w, h, d);
+#ifndef __WXMICROWIN__
+    wxBitmapRefData *refData = new wxBitmapRefData;
+    m_refData = refData;
+
+    refData->m_width = width;
+    refData->m_height = height;
+    refData->m_depth = depth;
+
+    char *data;
+    if ( depth == 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 reversed!
+        const size_t bytesPerLine = (width + 7) / 8;
+        const size_t padding = bytesPerLine % 2;
+        const size_t len = height * ( padding + bytesPerLine );
+        data = (char *)malloc(len);
+        const char *src = bits;
+        char *dst = data;
+
+        for ( int rows = 0; rows < height; rows++ )
+        {
+            for ( size_t cols = 0; cols < bytesPerLine; cols++ )
+            {
+                unsigned char val = *src++;
+                unsigned char reversed = 0;
+
+                for ( int bits = 0; bits < 8; bits++)
+                {
+                    reversed <<= 1;
+                    reversed |= (unsigned char)(val & 0x01);
+                    val >>= 1;
+                }
+                *dst++ = ~reversed;
+            }
+
+            if ( padding )
+                *dst++ = 0;
+        }
+    }
+    else
+    {
+        // bits should already be in Windows standard format
+        data = const_cast<char *>(bits);
+    }

 
 

-  if ( wxTheBitmapList )
-    wxTheBitmapList->AddBitmap(this);
+    HBITMAP hbmp = ::CreateBitmap(width, height, 1, depth, data);
+    if ( !hbmp )
+    {
+        wxLogLastError(wxT("CreateBitmap"));
+    }
+
+    if ( data != bits )
+    {
+        free(data);
+    }
+
+    SetHBITMAP((WXHBITMAP)hbmp);
+#endif

 }
 
 }
 

-wxBitmap::wxBitmap(void *data, long type, int width, int height, int depth)
+wxBitmap::wxBitmap(int w, int h, const wxDC& dc)

 {
 {

-  (void) Create(data, type, width, height, depth);
+    (void)Create(w, h, dc);
+}

 
 

-  if ( wxTheBitmapList )
-    wxTheBitmapList->AddBitmap(this);
+wxBitmap::wxBitmap(const void* data, wxBitmapType type, int width, int height, int depth)
+{
+    (void)Create(data, type, width, height, depth);

 }
 
 }
 

-wxBitmap::wxBitmap(const wxString& filename, long type)
+wxBitmap::wxBitmap(const wxString& filename, wxBitmapType type)

 {
 {

-  LoadFile(filename, (int)type);
+    LoadFile(filename, type);
+}

 
 

-  if ( wxTheBitmapList )
-    wxTheBitmapList->AddBitmap(this);
+bool wxBitmap::Create(int width, int height, int depth)
+{
+    return DoCreate(width, height, depth, 0);

 }
 
 }
 

-#if wxUSE_XPM_IN_MSW
-// Create from data
-wxBitmap::wxBitmap(char **data, wxItem *WXUNUSED(anItem))
+bool wxBitmap::Create(int width, int height, const wxDC& dc)

 {
 {

-  (void) Create((void *)data, wxBITMAP_TYPE_XPM_DATA, 0, 0, 0);
+    wxCHECK_MSG( dc.IsOk(), false, wxT("invalid HDC in wxBitmap::Create()") );
+
+    const wxMSWDCImpl *impl = wxDynamicCast( dc.GetImpl(), wxMSWDCImpl );
+
+    if (impl)
+        return DoCreate(width, height, -1, impl->GetHDC());
+    else
+        return false;

 }
 }

-#endif

 
 

-bool wxBitmap::Create(int w, int h, int d)
+bool wxBitmap::DoCreate(int w, int h, int d, WXHDC hdc)

 {
 {

-  UnRef();
-
-  m_refData = new wxBitmapRefData;
-
-  M_BITMAPDATA->m_width = w;
-  M_BITMAPDATA->m_height = h;
-  M_BITMAPDATA->m_depth = d;
-
-  if (d > 0)
-  {
-    M_BITMAPDATA->m_hBitmap = (WXHBITMAP) CreateBitmap(w, h, 1, d, NULL);
-  }
-  else
-  {
-    HDC dc = GetDC(NULL);
-    M_BITMAPDATA->m_hBitmap = (WXHBITMAP) CreateCompatibleBitmap(dc, w, h);
-    ReleaseDC(NULL, dc);
-    M_BITMAPDATA->m_depth = wxDisplayDepth();
-  }
-  if (M_BITMAPDATA->m_hBitmap)
-    M_BITMAPDATA->m_ok = TRUE;
-  else
-    M_BITMAPDATA->m_ok = FALSE;
-  return M_BITMAPDATA->m_ok;
+    UnRef();
+
+    m_refData = new wxBitmapRefData;
+
+    GetBitmapData()->m_width = w;
+    GetBitmapData()->m_height = h;
+
+    HBITMAP hbmp    wxDUMMY_INITIALIZE(0);
+
+#ifndef NEVER_USE_DIB
+    if ( wxShouldCreateDIB(w, h, d, hdc) )
+    {
+        if ( d == -1 )
+        {
+            // create DIBs without alpha channel by default
+            d = 24;
+        }
+
+        wxDIB dib(w, h, d);
+        if ( !dib.IsOk() )
+           return false;
+
+        // don't delete the DIB section in dib object dtor
+        hbmp = dib.Detach();
+
+        GetBitmapData()->m_isDIB = true;
+        GetBitmapData()->m_depth = d;
+    }
+    else // create a DDB
+#endif // NEVER_USE_DIB
+    {
+#ifndef ALWAYS_USE_DIB
+#ifndef __WXMICROWIN__
+        if ( d > 0 )
+        {
+            hbmp = ::CreateBitmap(w, h, 1, d, NULL);
+            if ( !hbmp )
+            {
+                wxLogLastError(wxT("CreateBitmap"));
+            }
+
+            GetBitmapData()->m_depth = d;
+        }
+        else // d == 0, create bitmap compatible with the screen
+#endif // !__WXMICROWIN__
+        {
+            ScreenHDC dc;
+            hbmp = ::CreateCompatibleBitmap(dc, w, h);
+            if ( !hbmp )
+            {
+                wxLogLastError(wxT("CreateCompatibleBitmap"));
+            }
+
+            GetBitmapData()->m_depth = wxDisplayDepth();
+        }
+#endif // !ALWAYS_USE_DIB
+    }
+
+    SetHBITMAP((WXHBITMAP)hbmp);
+
+    return IsOk();

 }
 
 }
 

-bool wxBitmap::LoadFile(const wxString& filename, long type)
+#if wxUSE_IMAGE
+
+// ----------------------------------------------------------------------------
+// wxImage to/from conversions for Microwin
+// ----------------------------------------------------------------------------
+
+// Microwin versions are so different from normal ones that it really doesn't
+// make sense to use #ifdefs inside the function bodies
+#ifdef __WXMICROWIN__
+
+bool wxBitmap::CreateFromImage(const wxImage& image, int depth, const wxDC& dc)

 {
 {

-  UnRef();
+    // Set this to 1 to experiment with mask code,
+    // which currently doesn't work
+    #define USE_MASKS 0
+
+    m_refData = new wxBitmapRefData();
+
+    // Initial attempt at a simple-minded implementation.
+    // The bitmap will always be created at the screen depth,
+    // so the 'depth' argument is ignored.
+
+    HDC hScreenDC = ::GetDC(NULL);
+    int screenDepth = ::GetDeviceCaps(hScreenDC, BITSPIXEL);
+
+    HBITMAP hBitmap = ::CreateCompatibleBitmap(hScreenDC, image.GetWidth(), image.GetHeight());
+    HBITMAP hMaskBitmap = NULL;
+    HBITMAP hOldMaskBitmap = NULL;
+    HDC hMaskDC = NULL;
+    unsigned char maskR = 0;
+    unsigned char maskG = 0;
+    unsigned char maskB = 0;
+
+    //    printf("Created bitmap %d\n", (int) hBitmap);
+    if (hBitmap == NULL)
+    {
+        ::ReleaseDC(NULL, hScreenDC);
+        return false;
+    }
+    HDC hMemDC = ::CreateCompatibleDC(hScreenDC);
+
+    HBITMAP hOldBitmap = ::SelectObject(hMemDC, hBitmap);
+    ::ReleaseDC(NULL, hScreenDC);
+
+    // created an mono-bitmap for the possible mask
+    bool hasMask = image.HasMask();
+
+    if ( hasMask )
+    {
+#if USE_MASKS
+        // FIXME: we should be able to pass bpp = 1, but
+        // GdBlit can't handle a different depth
+#if 0
+        hMaskBitmap = ::CreateBitmap( (WORD)image.GetWidth(), (WORD)image.GetHeight(), 1, 1, NULL );
+#else
+        hMaskBitmap = ::CreateCompatibleBitmap( hMemDC, (WORD)image.GetWidth(), (WORD)image.GetHeight());
+#endif
+        maskR = image.GetMaskRed();
+        maskG = image.GetMaskGreen();
+        maskB = image.GetMaskBlue();

 
 

-  m_refData = new wxBitmapRefData;
+        if (!hMaskBitmap)
+        {
+            hasMask = false;
+        }
+        else
+        {
+            hScreenDC = ::GetDC(NULL);
+            hMaskDC = ::CreateCompatibleDC(hScreenDC);
+           ::ReleaseDC(NULL, hScreenDC);
+
+            hOldMaskBitmap = ::SelectObject( hMaskDC, hMaskBitmap);
+        }
+#else
+        hasMask = false;
+#endif
+    }
+
+    int i, j;
+    for (i = 0; i < image.GetWidth(); i++)
+    {
+        for (j = 0; j < image.GetHeight(); j++)
+        {
+            unsigned char red = image.GetRed(i, j);
+            unsigned char green = image.GetGreen(i, j);
+            unsigned char blue = image.GetBlue(i, j);
+
+            ::SetPixel(hMemDC, i, j, PALETTERGB(red, green, blue));
+
+            if (hasMask)
+            {
+                // scan the bitmap for the transparent colour and set the corresponding
+                // pixels in the mask to BLACK and the rest to WHITE
+                if (maskR == red && maskG == green && maskB == blue)
+                    ::SetPixel(hMaskDC, i, j, PALETTERGB(0, 0, 0));
+                else
+                    ::SetPixel(hMaskDC, i, j, PALETTERGB(255, 255, 255));
+            }
+        }
+    }

 
 

-  wxBitmapHandler *handler = FindHandler(type);
+    ::SelectObject(hMemDC, hOldBitmap);
+    ::DeleteDC(hMemDC);
+    if (hasMask)
+    {
+        ::SelectObject(hMaskDC, hOldMaskBitmap);
+        ::DeleteDC(hMaskDC);

 
 

-  if ( handler == NULL ) {
-    wxLogWarning("no bitmap handler for type %d defined.", type);
+        ((wxBitmapRefData*)m_refData)->SetMask(hMaskBitmap);
+    }
+
+    SetWidth(image.GetWidth());
+    SetHeight(image.GetHeight());
+    SetDepth(screenDepth);
+    SetHBITMAP( (WXHBITMAP) hBitmap );

 
 

-    return FALSE;
-  }
+#if wxUSE_PALETTE
+    // Copy the palette from the source image
+    SetPalette(image.GetPalette());
+#endif // wxUSE_PALETTE

 
 

-  return handler->LoadFile(this, filename, type, -1, -1);
+    return true;

 }
 
 }
 

-bool wxBitmap::Create(void *data, long type, int width, int height, int depth)
+wxImage wxBitmap::ConvertToImage() const

 {
 {

-  UnRef();
+    // Initial attempt at a simple-minded implementation.
+    // The bitmap will always be created at the screen depth,
+    // so the 'depth' argument is ignored.
+    // TODO: transparency (create a mask image)

 
 

-  m_refData = new wxBitmapRefData;
+    if (!IsOk())
+    {
+        wxFAIL_MSG( wxT("bitmap is invalid") );
+        return wxNullImage;
+    }
+
+    wxImage image;
+
+    wxCHECK_MSG( IsOk(), wxNullImage, wxT("invalid bitmap") );
+
+    // create an wxImage object
+    int width = GetWidth();
+    int height = GetHeight();
+    image.Create( width, height );
+    unsigned char *data = image.GetData();
+    if( !data )
+    {
+        wxFAIL_MSG( wxT("could not allocate data for image") );
+        return wxNullImage;
+    }
+
+    HDC hScreenDC = ::GetDC(NULL);

 
 

-  wxBitmapHandler *handler = FindHandler(type);
+    HDC hMemDC = ::CreateCompatibleDC(hScreenDC);
+    ::ReleaseDC(NULL, hScreenDC);
+
+    HBITMAP hBitmap = (HBITMAP) GetHBITMAP();
+
+    HBITMAP hOldBitmap = ::SelectObject(hMemDC, hBitmap);
+
+    int i, j;
+    for (i = 0; i < GetWidth(); i++)
+    {
+        for (j = 0; j < GetHeight(); j++)
+        {
+            COLORREF color = ::GetPixel(hMemDC, i, j);
+            unsigned char red = GetRValue(color);
+            unsigned char green = GetGValue(color);
+            unsigned char blue = GetBValue(color);
+
+            image.SetRGB(i, j, red, green, blue);
+        }
+    }

 
 

-  if ( handler == NULL ) {
-    wxLogWarning("no bitmap handler for type %d defined.", type);
+    ::SelectObject(hMemDC, hOldBitmap);
+    ::DeleteDC(hMemDC);

 
 

-    return FALSE;
-  }
+#if wxUSE_PALETTE
+    // Copy the palette from the source image
+    if (GetPalette())
+        image.SetPalette(* GetPalette());
+#endif // wxUSE_PALETTE

 
 

-  return handler->Create(this, data, type, width, height, depth);
+    return image;

 }
 
 }
 

-bool wxBitmap::SaveFile(const wxString& filename, int type, const wxPalette *palette)
+#endif // __WXMICROWIN__
+
+// ----------------------------------------------------------------------------
+// wxImage to/from conversions
+// ----------------------------------------------------------------------------
+
+bool wxBitmap::CreateFromImage(const wxImage& image, int depth)

 {
 {

-  wxBitmapHandler *handler = FindHandler(type);
+    return CreateFromImage(image, depth, 0);
+}

 
 

-  if ( handler == NULL ) {
-    wxLogWarning("no bitmap handler for type %d defined.", type);
+bool wxBitmap::CreateFromImage(const wxImage& image, const wxDC& dc)
+{
+    wxCHECK_MSG( dc.IsOk(), false,
+                    wxT("invalid HDC in wxBitmap::CreateFromImage()") );

 
 

-    return FALSE;
-  }
+    const wxMSWDCImpl *impl = wxDynamicCast( dc.GetImpl(), wxMSWDCImpl );

 
 

-  return handler->SaveFile(this, filename, type, palette);
+    if (impl)
+        return CreateFromImage(image, -1, impl->GetHDC());
+    else
+        return false;

 }
 
 }
 

-void wxBitmap::SetWidth(int w)
+#if wxUSE_WXDIB
+
+bool wxBitmap::CreateFromImage(const wxImage& image, int depth, WXHDC hdc)

 {
 {

-  if (!M_BITMAPDATA)
-  m_refData = new wxBitmapRefData;
+    wxCHECK_MSG( image.IsOk(), false, wxT("invalid image") );
+
+    UnRef();
+
+    // first convert the image to DIB
+    const int h = image.GetHeight();
+    const int w = image.GetWidth();
+
+    wxDIB dib(image);
+    if ( !dib.IsOk() )
+        return false;
+
+    const bool hasAlpha = image.HasAlpha();
+
+    if (depth == -1)
+      depth = dib.GetDepth();
+
+    // store the bitmap parameters
+    wxBitmapRefData * const refData = new wxBitmapRefData;
+    refData->m_width = w;
+    refData->m_height = h;
+    refData->m_hasAlpha = hasAlpha;
+    refData->m_depth = depth;
+
+    m_refData = refData;
+

 
 

-  M_BITMAPDATA->m_width = w;
+    // next either store DIB as is or create a DDB from it
+    HBITMAP hbitmap     wxDUMMY_INITIALIZE(0);
+
+    // are we going to use DIB?
+    //
+    // NB: DDBs don't support alpha so if we have alpha channel we must use DIB
+    if ( hasAlpha || wxShouldCreateDIB(w, h, depth, hdc) )
+    {
+        // don't delete the DIB section in dib object dtor
+        hbitmap = dib.Detach();
+
+        refData->m_isDIB = true;
+    }
+#ifndef ALWAYS_USE_DIB
+    else // we need to convert DIB to DDB
+    {
+        hbitmap = dib.CreateDDB((HDC)hdc);
+    }
+#endif // !ALWAYS_USE_DIB
+
+    // validate this object
+    SetHBITMAP((WXHBITMAP)hbitmap);
+
+    // finally also set the mask if we have one
+    if ( image.HasMask() )
+    {
+        const size_t len  = 2*((w+15)/16);
+        BYTE *src  = image.GetData();
+        BYTE *data = new BYTE[h*len];
+        memset(data, 0, h*len);
+        BYTE r = image.GetMaskRed(),
+             g = image.GetMaskGreen(),
+             b = image.GetMaskBlue();
+        BYTE *dst = data;
+        for ( int y = 0; y < h; y++, dst += len )
+        {
+            BYTE *dstLine = dst;
+            BYTE mask = 0x80;
+            for ( int x = 0; x < w; x++, src += 3 )
+            {
+                if (src[0] != r || src[1] != g || src[2] != b)
+                    *dstLine |= mask;
+
+                if ( (mask >>= 1) == 0 )
+                {
+                    dstLine++;
+                    mask = 0x80;
+                }
+            }
+        }
+
+        hbitmap = ::CreateBitmap(w, h, 1, 1, data);
+        if ( !hbitmap )
+        {
+            wxLogLastError(wxT("CreateBitmap(mask)"));
+        }
+        else
+        {
+            SetMask(new wxMask((WXHBITMAP)hbitmap));
+        }
+
+        delete[] data;
+    }
+
+    return true;

 }
 
 }
 

-void wxBitmap::SetHeight(int h)
+wxImage wxBitmap::ConvertToImage() const

 {
 {

-  if (!M_BITMAPDATA)
-  m_refData = new wxBitmapRefData;
+    // convert DDB to DIB
+    wxDIB dib(*this);
+
+    if ( !dib.IsOk() )
+    {
+        return wxNullImage;
+    }
+
+    // and then DIB to our wxImage
+    wxImage image = dib.ConvertToImage();
+    if ( !image.IsOk() )
+    {
+        return wxNullImage;
+    }

 
 

-  M_BITMAPDATA->m_height = h;
+    // now do the same for the mask, if we have any
+    HBITMAP hbmpMask = GetMask() ? (HBITMAP) GetMask()->GetMaskBitmap() : NULL;
+    if ( hbmpMask )
+    {
+        wxDIB dibMask(hbmpMask);
+        if ( dibMask.IsOk() )
+        {
+            // TODO: use wxRawBitmap to iterate over DIB
+
+            // we hard code the mask colour for now but we could also make an
+            // effort (and waste time) to choose a colour not present in the
+            // image already to avoid having to fudge the pixels below --
+            // whether it's worth to do it is unclear however
+            static const int MASK_RED = 1;
+            static const int MASK_GREEN = 2;
+            static const int MASK_BLUE = 3;
+            static const int MASK_BLUE_REPLACEMENT = 2;
+
+            const int h = dibMask.GetHeight();
+            const int w = dibMask.GetWidth();
+            const int bpp = dibMask.GetDepth();
+            const int maskBytesPerPixel = bpp >> 3;
+            const int maskBytesPerLine = wxDIB::GetLineSize(w, bpp);
+            unsigned char *data = image.GetData();
+
+            // remember that DIBs are stored in bottom to top order
+            unsigned char *
+                maskLineStart = dibMask.GetData() + ((h - 1) * maskBytesPerLine);
+
+            for ( int y = 0; y < h; y++, maskLineStart -= maskBytesPerLine )
+            {
+                // traverse one mask DIB line
+                unsigned char *mask = maskLineStart;
+                for ( int x = 0; x < w; x++, mask += maskBytesPerPixel )
+                {
+                    // should this pixel be transparent?
+                    if ( *mask )
+                    {
+                        // no, check that it isn't transparent by accident
+                        if ( (data[0] == MASK_RED) &&
+                                (data[1] == MASK_GREEN) &&
+                                    (data[2] == MASK_BLUE) )
+                        {
+                            // we have to fudge the colour a bit to prevent
+                            // this pixel from appearing transparent
+                            data[2] = MASK_BLUE_REPLACEMENT;
+                        }
+
+                        data += 3;
+                    }
+                    else // yes, transparent pixel
+                    {
+                        *data++ = MASK_RED;
+                        *data++ = MASK_GREEN;
+                        *data++ = MASK_BLUE;
+                    }
+                }
+            }
+
+            image.SetMaskColour(MASK_RED, MASK_GREEN, MASK_BLUE);
+        }
+    }
+
+    return image;

 }
 
 }
 

-void wxBitmap::SetDepth(int d)
+#else // !wxUSE_WXDIB
+
+bool
+wxBitmap::CreateFromImage(const wxImage& WXUNUSED(image),
+                          int WXUNUSED(depth),
+                          WXHDC WXUNUSED(hdc))

 {
 {

-  if (!M_BITMAPDATA)
-  m_refData = new wxBitmapRefData;
+    return false;
+}

 
 

-  M_BITMAPDATA->m_depth = d;
+wxImage wxBitmap::ConvertToImage() const
+{
+    return wxImage();

 }
 
 }
 

-void wxBitmap::SetQuality(int q)
+#endif // wxUSE_WXDIB/!wxUSE_WXDIB
+
+#endif // wxUSE_IMAGE
+
+// ----------------------------------------------------------------------------
+// loading and saving bitmaps
+// ----------------------------------------------------------------------------
+
+bool wxBitmap::LoadFile(const wxString& filename, wxBitmapType type)

 {
 {

-  if (!M_BITMAPDATA)
-  m_refData = new wxBitmapRefData;
+    UnRef();
+
+    wxBitmapHandler *handler = wxDynamicCast(FindHandler(type), wxBitmapHandler);
+
+    if ( handler )
+    {
+        m_refData = new wxBitmapRefData;

 
 

-  M_BITMAPDATA->m_quality = q;
+        return handler->LoadFile(this, filename, type, -1, -1);
+    }
+#if wxUSE_IMAGE && wxUSE_WXDIB
+    else // no bitmap handler found
+    {
+        wxImage image;
+        if ( image.LoadFile( filename, type ) && image.IsOk() )
+        {
+            *this = wxBitmap(image);
+
+            return true;
+        }
+    }
+#endif // wxUSE_IMAGE
+
+    return false;

 }
 
 }
 

-void wxBitmap::SetOk(bool isOk)
+bool wxBitmap::Create(const void* data, wxBitmapType type, int width, int height, int depth)

 {
 {

-  if (!M_BITMAPDATA)
-  m_refData = new wxBitmapRefData;
+    UnRef();
+
+    wxBitmapHandler *handler = wxDynamicCast(FindHandler(type), wxBitmapHandler);

 
 

-  M_BITMAPDATA->m_ok = isOk;
+    if ( !handler )
+    {
+        wxLogDebug(wxT("Failed to create bitmap: no bitmap handler for type %ld defined."), type);
+
+        return false;
+    }
+
+    m_refData = new wxBitmapRefData;
+
+    return handler->Create(this, data, type, width, height, depth);

 }
 
 }
 

-void wxBitmap::SetPalette(const wxPalette& palette)
+bool wxBitmap::SaveFile(const wxString& filename,
+                        wxBitmapType type,
+                        const wxPalette *palette) const

 {
 {

-  if (!M_BITMAPDATA)
-  m_refData = new wxBitmapRefData;
+    wxBitmapHandler *handler = wxDynamicCast(FindHandler(type), wxBitmapHandler);
+
+    if ( handler )
+    {
+        return handler->SaveFile(this, filename, type, palette);
+    }
+#if wxUSE_IMAGE && wxUSE_WXDIB
+    else // no bitmap handler found
+    {
+        // FIXME what about palette? shouldn't we use it?
+        wxImage image = ConvertToImage();
+        if ( image.IsOk() )
+        {
+            return image.SaveFile(filename, type);
+        }
+    }
+#endif // wxUSE_IMAGE

 
 

-  M_BITMAPDATA->m_bitmapPalette = palette ;
+    return false;

 }
 
 }
 

-void wxBitmap::SetMask(wxMask *mask)
+// ----------------------------------------------------------------------------
+// sub bitmap extraction
+// ----------------------------------------------------------------------------
+wxBitmap wxBitmap::GetSubBitmap( const wxRect& rect ) const
+{
+        MemoryHDC dcSrc;
+        SelectInHDC selectSrc(dcSrc, GetHbitmap());
+        return GetSubBitmapOfHDC( rect, (WXHDC)dcSrc );
+}
+
+wxBitmap wxBitmap::GetSubBitmapOfHDC( const wxRect& rect, WXHDC hdc ) const

 {
 {

-  if (!M_BITMAPDATA)
-  m_refData = new wxBitmapRefData;
+    wxCHECK_MSG( IsOk() &&
+                 (rect.x >= 0) && (rect.y >= 0) &&
+                 (rect.x+rect.width <= GetWidth()) &&
+                 (rect.y+rect.height <= GetHeight()),
+                 wxNullBitmap, wxT("Invalid bitmap or bitmap region") );
+
+    wxBitmap ret( rect.width, rect.height, GetDepth() );
+    wxASSERT_MSG( ret.IsOk(), wxT("GetSubBitmap error") );
+
+#ifndef __WXMICROWIN__
+    // handle alpha channel, if any
+    if (HasAlpha())
+        ret.UseAlpha();
+
+    // copy bitmap data
+    MemoryHDC dcSrc,
+              dcDst;
+
+    {
+        SelectInHDC selectDst(dcDst, GetHbitmapOf(ret));
+
+        if ( !selectDst )
+        {
+            wxLogLastError(wxT("SelectObject(destBitmap)"));
+        }
+
+        if ( !::BitBlt(dcDst, 0, 0, rect.width, rect.height,
+                       (HDC)hdc, rect.x, rect.y, SRCCOPY) )
+        {
+            wxLogLastError(wxT("BitBlt"));
+        }
+    }
+
+    // copy mask if there is one
+    if ( GetMask() )
+    {
+        HBITMAP hbmpMask = ::CreateBitmap(rect.width, rect.height, 1, 1, 0);

 
 

-  M_BITMAPDATA->m_bitmapMask = mask ;
+        SelectInHDC selectSrc(dcSrc, (HBITMAP) GetMask()->GetMaskBitmap()),
+                    selectDst(dcDst, hbmpMask);
+
+        if ( !::BitBlt(dcDst, 0, 0, rect.width, rect.height,
+                       dcSrc, rect.x, rect.y, SRCCOPY) )
+        {
+            wxLogLastError(wxT("BitBlt"));
+        }
+
+        wxMask *mask = new wxMask((WXHBITMAP) hbmpMask);
+        ret.SetMask(mask);
+    }
+#endif // !__WXMICROWIN__
+
+    return ret;
+}
+
+// ----------------------------------------------------------------------------
+// wxBitmap accessors
+// ----------------------------------------------------------------------------
+
+#if wxUSE_PALETTE
+wxPalette* wxBitmap::GetPalette() const
+{
+    return GetBitmapData() ? &GetBitmapData()->m_bitmapPalette
+                           : NULL;

 }
 }

+#endif

 
 

-void wxBitmap::SetHBITMAP(WXHBITMAP bmp)
+wxMask *wxBitmap::GetMask() const

 {
 {

-  if (!M_BITMAPDATA)
-  m_refData = new wxBitmapRefData;
+    return GetBitmapData() ? GetBitmapData()->GetMask() : NULL;
+}

 
 

-  M_BITMAPDATA->m_hBitmap = bmp;
+wxBitmap wxBitmap::GetMaskBitmap() const
+{
+    wxBitmap bmp;
+    wxMask *mask = GetMask();
+    if ( mask )
+        bmp.SetHBITMAP(mask->GetMaskBitmap());
+    return bmp;

 }
 
 }
 

-void wxBitmap::AddHandler(wxBitmapHandler *handler)
+wxDC *wxBitmap::GetSelectedInto() const

 {
 {

-  sm_handlers.Append(handler);
+#if wxDEBUG_LEVEL
+    return GetBitmapData() ? GetBitmapData()->m_selectedInto : NULL;
+#else
+    return NULL;
+#endif

 }
 
 }
 

-void wxBitmap::InsertHandler(wxBitmapHandler *handler)
+void wxBitmap::UseAlpha()

 {
 {

-  sm_handlers.Insert(handler);
+    if ( GetBitmapData() )
+        GetBitmapData()->m_hasAlpha = true;

 }
 
 }
 

-bool wxBitmap::RemoveHandler(const wxString& name)
+bool wxBitmap::HasAlpha() const

 {
 {

-  wxBitmapHandler *handler = FindHandler(name);
-  if ( handler )
-  {
-    sm_handlers.DeleteObject(handler);
-    return TRUE;
-  }
-  else
-    return FALSE;
+    return GetBitmapData() && GetBitmapData()->m_hasAlpha;

 }
 
 }
 

-wxBitmapHandler *wxBitmap::FindHandler(const wxString& name)
+// ----------------------------------------------------------------------------
+// wxBitmap setters
+// ----------------------------------------------------------------------------
+
+void wxBitmap::SetSelectedInto(wxDC *dc)

 {
 {

-  wxNode *node = sm_handlers.First();
-  while ( node )
-  {
-    wxBitmapHandler *handler = (wxBitmapHandler *)node->Data();
-    if ( handler->GetName() == name )
-      return handler;
-    node = node->Next();
-  }
-  return NULL;
+#if wxDEBUG_LEVEL
+    if ( GetBitmapData() )
+        GetBitmapData()->m_selectedInto = dc;
+#else
+    wxUnusedVar(dc);
+#endif

 }
 
 }
 

-wxBitmapHandler *wxBitmap::FindHandler(const wxString& extension, long bitmapType)
+#if wxUSE_PALETTE
+
+void wxBitmap::SetPalette(const wxPalette& palette)

 {
 {

-  wxNode *node = sm_handlers.First();
-  while ( node )
-  {
-    wxBitmapHandler *handler = (wxBitmapHandler *)node->Data();
-    if ( handler->GetExtension() == extension &&
-          (bitmapType == -1 || handler->GetType() == bitmapType) )
-      return handler;
-    node = node->Next();
-  }
-  return NULL;
+    AllocExclusive();
+
+    GetBitmapData()->m_bitmapPalette = palette;

 }
 
 }
 

-wxBitmapHandler *wxBitmap::FindHandler(long bitmapType)
+#endif // wxUSE_PALETTE
+
+void wxBitmap::SetMask(wxMask *mask)

 {
 {

-  wxNode *node = sm_handlers.First();
-  while ( node )
-  {
-    wxBitmapHandler *handler = (wxBitmapHandler *)node->Data();
-    if (handler->GetType() == bitmapType)
-      return handler;
-    node = node->Next();
-  }
-  return NULL;
+    AllocExclusive();
+
+    GetBitmapData()->SetMask(mask);

 }
 
 }
 

-// New Create/FreeDIB functions since ones in dibutils.cpp are confusing
-static long createDIB(long xSize, long ySize, long bitsPerPixel,
-                       HPALETTE hPal, LPBITMAPINFO* lpDIBHeader);
-static long freeDIB(LPBITMAPINFO lpDIBHeader);
+// ----------------------------------------------------------------------------
+// raw bitmap access support
+// ----------------------------------------------------------------------------

 
 

-// Creates a bitmap that matches the device context, from
-// an arbitray bitmap. At present, the original bitmap must have an
-// associated palette. TODO: use a default palette if no palette exists.
-// Contributed by Frederic Villeneuve <frederic.villeneuve@natinst.com>
-wxBitmap wxBitmap::GetBitmapForDC(wxDC& dc) const
+#ifdef wxHAS_RAW_BITMAP
+
+void *wxBitmap::GetRawData(wxPixelDataBase& data, int bpp)

 {
 {

-    wxMemoryDC      memDC;
-    wxBitmap        tmpBitmap(this->GetWidth(), this->GetHeight(), dc.GetDepth());
-    HPALETTE        hPal = NULL;
-    LPBITMAPINFO    lpDib;
-    void            *lpBits = NULL;
+#if wxUSE_WXDIB
+    if ( !IsOk() )
+    {
+        // no bitmap, no data (raw or otherwise)
+        return NULL;
+    }
+
+    // if we're already a DIB we can access our data directly, but if not we
+    // need to convert this DDB to a DIB section and use it for raw access and
+    // then convert it back
+    HBITMAP hDIB;
+    if ( !GetBitmapData()->m_isDIB )
+    {
+        wxCHECK_MSG( !GetBitmapData()->m_dib, NULL,
+                        wxT("GetRawData() may be called only once") );

 
 

-/*
-    wxASSERT( this->GetPalette() && this->GetPalette()->Ok() && (this->GetPalette()->GetHPALETTE() != 0) );
+        wxDIB *dib = new wxDIB(*this);
+        if ( !dib->IsOk() )
+        {
+            delete dib;
+
+            return NULL;
+        }

 
 

-    tmpBitmap.SetPalette(this->GetPalette());
-    memDC.SelectObject(tmpBitmap);
-    memDC.SetPalette(this->GetPalette());
+        // we'll free it in UngetRawData()
+        GetBitmapData()->m_dib = dib;

 
 

-    hPal = (HPALETTE) this->GetPalette()->GetHPALETTE();
-*/
-    if( this->GetPalette() && this->GetPalette()->Ok() && (this->GetPalette()->GetHPALETTE() != 0) )
+        hDIB = dib->GetHandle();
+    }
+    else // we're a DIB

     {
     {

-        tmpBitmap.SetPalette(* this->GetPalette());
-        memDC.SelectObject(tmpBitmap);
-        memDC.SetPalette(* this->GetPalette());
-        hPal = (HPALETTE) this->GetPalette()->GetHPALETTE();
+        hDIB = GetHbitmap();

     }
     }

-    else
+
+    DIBSECTION ds;
+    if ( ::GetObject(hDIB, sizeof(ds), &ds) != sizeof(DIBSECTION) )
+    {
+        wxFAIL_MSG( wxT("failed to get DIBSECTION from a DIB?") );
+
+        return NULL;
+    }
+
+    // check that the bitmap is in correct format
+    if ( ds.dsBm.bmBitsPixel != bpp )
+    {
+        wxFAIL_MSG( wxT("incorrect bitmap type in wxBitmap::GetRawData()") );
+
+        return NULL;
+    }
+
+    // ok, store the relevant info in wxPixelDataBase
+    const LONG h = ds.dsBm.bmHeight;
+
+    data.m_width = ds.dsBm.bmWidth;
+    data.m_height = h;
+
+    // remember that DIBs are stored in top to bottom order!
+    // (We can't just use ds.dsBm.bmWidthBytes here, because it isn't always a
+    // multiple of 2, as required by the documentation.  So we use the official
+    // formula, which we already use elsewhere.)
+    const LONG bytesPerRow =
+        wxDIB::GetLineSize(ds.dsBm.bmWidth, ds.dsBm.bmBitsPixel);
+    data.m_stride = -bytesPerRow;
+
+    char *bits = (char *)ds.dsBm.bmBits;
+    if ( h > 1 )

     {
     {

-        hPal = (HPALETTE) ::GetStockObject(DEFAULT_PALETTE);
-        wxPalette palette;
-        palette.SetHPALETTE( (WXHPALETTE)hPal );
-        tmpBitmap.SetPalette( palette );
-        memDC.SelectObject(tmpBitmap);
-        memDC.SetPalette( palette );
+        bits += (h - 1)*bytesPerRow;

     }
 
     }
 

-    // set the height negative because in a DIB the order of the lines is reversed
-    createDIB(this->GetWidth(), -this->GetHeight(), this->GetDepth(), hPal, &lpDib);
+    return bits;
+#else
+    return NULL;
+#endif
+}

 
 

-    lpBits = malloc(lpDib->bmiHeader.biSizeImage);
+void wxBitmap::UngetRawData(wxPixelDataBase& dataBase)
+{
+#if wxUSE_WXDIB
+    if ( !IsOk() )
+        return;

 
 

-    ::GetBitmapBits((HBITMAP)GetHBITMAP(), lpDib->bmiHeader.biSizeImage, lpBits);
+    if ( !&dataBase )
+    {
+        // invalid data, don't crash -- but don't assert neither as we're
+        // called automatically from wxPixelDataBase dtor and so there is no
+        // way to prevent this from happening
+        return;
+    }

 
 

-    ::SetDIBitsToDevice((HDC) memDC.GetHDC(), 0, 0, this->GetWidth(), this->GetHeight(),
-                        0, 0, 0, this->GetHeight(), lpBits, lpDib, DIB_RGB_COLORS);
+    // if we're a DDB we need to convert DIB back to DDB now to make the
+    // changes made via raw bitmap access effective
+    if ( !GetBitmapData()->m_isDIB )
+    {
+        wxDIB *dib = GetBitmapData()->m_dib;
+        GetBitmapData()->m_dib = NULL;

 
 

-    free(lpBits);
+        // TODO: convert

 
 

-    freeDIB(lpDib);
-    return (tmpBitmap);
+        delete dib;
+    }
+#endif // wxUSE_WXDIB

 }
 }

+#endif // wxHAS_RAW_BITMAP

 
 

-/*
- * wxMask
- */
+// ----------------------------------------------------------------------------
+// wxMask
+// ----------------------------------------------------------------------------

 
 

-wxMask::wxMask(void)
+wxMask::wxMask()

 {
     m_maskBitmap = 0;
 }
 
 {
     m_maskBitmap = 0;
 }
 

+// Copy constructor
+wxMask::wxMask(const wxMask &mask)
+      : wxObject()
+{
+    BITMAP bmp;
+
+    HDC srcDC = CreateCompatibleDC(0);
+    HDC destDC = CreateCompatibleDC(0);
+
+    // GetBitmapDimensionEx won't work if SetBitmapDimensionEx wasn't used
+    // so we'll use GetObject() API here:
+    if (::GetObject((HGDIOBJ)mask.m_maskBitmap, sizeof(bmp), &bmp) == 0)
+    {
+        wxFAIL_MSG(wxT("Cannot retrieve the dimensions of the wxMask to copy"));
+        return;
+    }
+
+    // create our HBITMAP
+    int w = bmp.bmWidth, h = bmp.bmHeight;
+    m_maskBitmap = (WXHBITMAP)CreateCompatibleBitmap(srcDC, w, h);
+
+    // copy the mask's HBITMAP into our HBITMAP
+    SelectObject(srcDC, (HBITMAP) mask.m_maskBitmap);
+    SelectObject(destDC, (HBITMAP) m_maskBitmap);
+
+    BitBlt(destDC, 0, 0, w, h, srcDC, 0, 0, SRCCOPY);
+
+    SelectObject(srcDC, 0);
+    DeleteDC(srcDC);
+    SelectObject(destDC, 0);
+    DeleteDC(destDC);
+}
+

 // Construct a mask from a bitmap and a colour indicating
 // the transparent area
 wxMask::wxMask(const wxBitmap& bitmap, const wxColour& colour)
 {
     m_maskBitmap = 0;
 // Construct a mask from a bitmap and a colour indicating
 // the transparent area
 wxMask::wxMask(const wxBitmap& bitmap, const wxColour& colour)
 {
     m_maskBitmap = 0;

-  Create(bitmap, colour);
+    Create(bitmap, colour);

 }
 
 // Construct a mask from a bitmap and a palette index indicating
 }
 
 // Construct a mask from a bitmap and a palette index indicating


@@ -460,17 +1407,17 @@ wxMask::wxMask(const wxBitmap& bitmap, const wxColour& colour)
 wxMask::wxMask(const wxBitmap& bitmap, int paletteIndex)
 {
     m_maskBitmap = 0;
 wxMask::wxMask(const wxBitmap& bitmap, int paletteIndex)
 {
     m_maskBitmap = 0;

-  Create(bitmap, paletteIndex);
+    Create(bitmap, paletteIndex);

 }
 
 // Construct a mask from a mono bitmap (copies the bitmap).
 wxMask::wxMask(const wxBitmap& bitmap)
 {
     m_maskBitmap = 0;
 }
 
 // Construct a mask from a mono bitmap (copies the bitmap).
 wxMask::wxMask(const wxBitmap& bitmap)
 {
     m_maskBitmap = 0;

-  Create(bitmap);
+    Create(bitmap);

 }
 
 }
 

-wxMask::~wxMask(void)
+wxMask::~wxMask()

 {
     if ( m_maskBitmap )
         ::DeleteObject((HBITMAP) m_maskBitmap);
 {
     if ( m_maskBitmap )
         ::DeleteObject((HBITMAP) m_maskBitmap);


@@ -479,30 +1426,35 @@ wxMask::~wxMask(void)
 // Create a mask from a mono bitmap (copies the bitmap).
 bool wxMask::Create(const wxBitmap& bitmap)
 {
 // Create a mask from a mono bitmap (copies the bitmap).
 bool wxMask::Create(const wxBitmap& bitmap)
 {

+#ifndef __WXMICROWIN__
+    wxCHECK_MSG( bitmap.IsOk() && bitmap.GetDepth() == 1, false,
+                 wxT("can't create mask from invalid or not monochrome bitmap") );
+

     if ( m_maskBitmap )
     if ( m_maskBitmap )

-  {
-    ::DeleteObject((HBITMAP) m_maskBitmap);
-    m_maskBitmap = 0;
-  }
-  if (!bitmap.Ok() || bitmap.GetDepth() != 1)
-  {
-    return FALSE;
-  }
-  m_maskBitmap = (WXHBITMAP) CreateBitmap(
-          bitmap.GetWidth(),
-          bitmap.GetHeight(),
-          1, 1, 0
-          );
-  HDC srcDC = CreateCompatibleDC(0);
-  SelectObject(srcDC, (HBITMAP) bitmap.GetHBITMAP());
-  HDC destDC = CreateCompatibleDC(0);
-  SelectObject(destDC, (HBITMAP) m_maskBitmap);
-  BitBlt(destDC, 0, 0, bitmap.GetWidth(), bitmap.GetHeight(), srcDC, 0, 0, SRCCOPY);
-  SelectObject(srcDC, 0);
-  DeleteDC(srcDC);
-  SelectObject(destDC, 0);
-  DeleteDC(destDC);
-  return TRUE;
+    {
+        ::DeleteObject((HBITMAP) m_maskBitmap);
+        m_maskBitmap = 0;
+    }
+
+    m_maskBitmap = (WXHBITMAP) CreateBitmap(
+                                            bitmap.GetWidth(),
+                                            bitmap.GetHeight(),
+                                            1, 1, 0
+                                           );
+    HDC srcDC = CreateCompatibleDC(0);
+    SelectObject(srcDC, (HBITMAP) bitmap.GetHBITMAP());
+    HDC destDC = CreateCompatibleDC(0);
+    SelectObject(destDC, (HBITMAP) m_maskBitmap);
+    BitBlt(destDC, 0, 0, bitmap.GetWidth(), bitmap.GetHeight(), srcDC, 0, 0, SRCCOPY);
+    SelectObject(srcDC, 0);
+    DeleteDC(srcDC);
+    SelectObject(destDC, 0);
+    DeleteDC(destDC);
+    return true;
+#else
+    wxUnusedVar(bitmap);
+    return false;
+#endif

 }
 
 // Create a mask from a bitmap and a palette index indicating
 }
 
 // Create a mask from a bitmap and a palette index indicating


@@ -510,663 +1462,315 @@ bool wxMask::Create(const wxBitmap& bitmap)
 bool wxMask::Create(const wxBitmap& bitmap, int paletteIndex)
 {
     if ( m_maskBitmap )
 bool wxMask::Create(const wxBitmap& bitmap, int paletteIndex)
 {
     if ( m_maskBitmap )

-  {
-    ::DeleteObject((HBITMAP) m_maskBitmap);
-    m_maskBitmap = 0;
-  }
-  if (bitmap.Ok() && bitmap.GetPalette()->Ok())
-  {
-    unsigned char red, green, blue;
-    if (bitmap.GetPalette()->GetRGB(paletteIndex, &red, &green, &blue))

     {
     {

-      wxColour transparentColour(red, green, blue);
-      return Create(bitmap, transparentColour);
+        ::DeleteObject((HBITMAP) m_maskBitmap);
+        m_maskBitmap = 0;
+    }
+
+#if wxUSE_PALETTE
+    if (bitmap.IsOk() && bitmap.GetPalette()->IsOk())
+    {
+        unsigned char red, green, blue;
+        if (bitmap.GetPalette()->GetRGB(paletteIndex, &red, &green, &blue))
+        {
+            wxColour transparentColour(red, green, blue);
+            return Create(bitmap, transparentColour);
+        }

     }
     }

-  }
-  return FALSE;
+#endif // wxUSE_PALETTE
+
+    return false;

 }
 
 // Create a mask from a bitmap and a colour indicating
 // the transparent area
 bool wxMask::Create(const wxBitmap& bitmap, const wxColour& colour)
 {
 }
 
 // Create a mask from a bitmap and a colour indicating
 // the transparent area
 bool wxMask::Create(const wxBitmap& bitmap, const wxColour& colour)
 {

-    if ( m_maskBitmap )
-  {
-    ::DeleteObject((HBITMAP) m_maskBitmap);
-    m_maskBitmap = 0;
-  }
-  if (!bitmap.Ok())
-  {
-    return FALSE;
-  }
-
-  // scan the bitmap for the transparent colour and set
-  // the corresponding pixels in the mask to BLACK and
-  // the rest to WHITE
-  COLORREF maskColour = RGB(colour.Red(), colour.Green(), colour.Blue());
-  m_maskBitmap = (WXHBITMAP) ::CreateBitmap(
-          bitmap.GetWidth(),
-          bitmap.GetHeight(),
-          1, 1, 0
-          );
-  HDC srcDC = ::CreateCompatibleDC(0);
-  ::SelectObject(srcDC, (HBITMAP) bitmap.GetHBITMAP());
-  HDC destDC = ::CreateCompatibleDC(0);
-  ::SelectObject(destDC, (HBITMAP) m_maskBitmap);
-
-  // this is not very efficient, but I can't think
-  // of a better way of doing it
-  for (int w = 0; w < bitmap.GetWidth(); w++)
-  {
-    for (int h = 0; h < bitmap.GetHeight(); h++)
-    {
-      COLORREF col = GetPixel(srcDC, w, h);
-      if (col == maskColour)
-      {
-        ::SetPixel(destDC, w, h, RGB(0, 0, 0));
-      }
-      else
-      {
-        ::SetPixel(destDC, w, h, RGB(255, 255, 255));
-      }
-    }
-  }
-  ::SelectObject(srcDC, 0);
-  ::DeleteDC(srcDC);
-  ::SelectObject(destDC, 0);
-  ::DeleteDC(destDC);
-  return TRUE;
-}
+#ifndef __WXMICROWIN__
+    wxCHECK_MSG( bitmap.IsOk(), false, wxT("invalid bitmap in wxMask::Create") );

 
 

-/*
- * wxBitmapHandler
- */
-
-IMPLEMENT_DYNAMIC_CLASS(wxBitmapHandler, wxObject)
+    if ( m_maskBitmap )
+    {
+        ::DeleteObject((HBITMAP) m_maskBitmap);
+        m_maskBitmap = 0;
+    }

 
 

-bool wxBitmapHandler::Create(wxBitmap *bitmap, void *data, long type, int width, int height, int depth)
-{
-  return FALSE;
-}
+    int width = bitmap.GetWidth(),
+        height = bitmap.GetHeight();

 
 

-bool wxBitmapHandler::LoadFile(wxBitmap *bitmap, const wxString& name, long type,
-    int desiredWidth, int desiredHeight)
-{
-  return FALSE;
-}
+    // scan the bitmap for the transparent colour and set the corresponding
+    // pixels in the mask to BLACK and the rest to WHITE
+    COLORREF maskColour = wxColourToPalRGB(colour);
+    m_maskBitmap = (WXHBITMAP)::CreateBitmap(width, height, 1, 1, 0);

 
 

-bool wxBitmapHandler::SaveFile(wxBitmap *bitmap, const wxString& name, int type, const wxPalette *palette)
-{
-  return FALSE;
-}
+    HDC srcDC = ::CreateCompatibleDC(NULL);
+    HDC destDC = ::CreateCompatibleDC(NULL);
+    if ( !srcDC || !destDC )
+    {
+        wxLogLastError(wxT("CreateCompatibleDC"));
+    }

 
 

-/*
- * Standard handlers
- */
+    bool ok = true;

 
 

-class WXDLLEXPORT wxBMPResourceHandler: public wxBitmapHandler
-{
-  DECLARE_DYNAMIC_CLASS(wxBMPResourceHandler)
-public:
-  inline wxBMPResourceHandler(void)
-  {
-  m_name = "Windows bitmap resource";
-  m_extension = "";
-  m_type = wxBITMAP_TYPE_BMP_RESOURCE;
-  };
-
-  virtual bool LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
-      int desiredWidth, int desiredHeight);
-};
-IMPLEMENT_DYNAMIC_CLASS(wxBMPResourceHandler, wxBitmapHandler)
+    // SelectObject() will fail
+    wxASSERT_MSG( !bitmap.GetSelectedInto(),
+                  wxT("bitmap can't be selected in another DC") );

 
 

-bool wxBMPResourceHandler::LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
-    int desiredWidth, int desiredHeight)
-{
-    // TODO: load colourmap.
-    M_BITMAPHANDLERDATA->m_hBitmap = (WXHBITMAP) ::LoadBitmap(wxGetInstance(), name);
-    if (M_BITMAPHANDLERDATA->m_hBitmap)
+    HGDIOBJ hbmpSrcOld = ::SelectObject(srcDC, GetHbitmapOf(bitmap));
+    if ( !hbmpSrcOld )

     {
     {

-      M_BITMAPHANDLERDATA->m_ok = TRUE;
-      BITMAP bm;
-      GetObject((HBITMAP) M_BITMAPHANDLERDATA->m_hBitmap, sizeof(BITMAP), (LPSTR) &bm);
-      M_BITMAPHANDLERDATA->m_width = bm.bmWidth;
-      M_BITMAPHANDLERDATA->m_height = bm.bmHeight;
-      M_BITMAPHANDLERDATA->m_depth = bm.bmBitsPixel;
-      return TRUE;
-    }
+        wxLogLastError(wxT("SelectObject"));

 
 

-  // it's probably not found
-  wxLogError("Can't load bitmap '%s' from resources! Check .rc file.", name.c_str());
+        ok = false;
+    }

 
 

-  return FALSE;
-}
+    HGDIOBJ hbmpDstOld = ::SelectObject(destDC, (HBITMAP)m_maskBitmap);
+    if ( !hbmpDstOld )
+    {
+        wxLogLastError(wxT("SelectObject"));

 
 

-class WXDLLEXPORT wxBMPFileHandler: public wxBitmapHandler
-{
-  DECLARE_DYNAMIC_CLASS(wxBMPFileHandler)
-public:
-  inline wxBMPFileHandler(void)
-  {
-  m_name = "Windows bitmap file";
-  m_extension = "bmp";
-  m_type = wxBITMAP_TYPE_BMP;
-  };
-
-  virtual bool LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
-      int desiredWidth, int desiredHeight);
-  virtual bool SaveFile(wxBitmap *bitmap, const wxString& name, int type, const wxPalette *palette = NULL);
-};
-IMPLEMENT_DYNAMIC_CLASS(wxBMPFileHandler, wxBitmapHandler)
+        ok = false;
+    }

 
 

-bool wxBMPFileHandler::LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
-    int desiredWidth, int desiredHeight)
-{
-#if wxUSE_IMAGE_LOADING_IN_MSW
-    wxPalette *palette = NULL;
-    bool success = FALSE;
-/*
-    if (type & wxBITMAP_DISCARD_COLOURMAP)
-      success = wxLoadIntoBitmap(WXSTRINGCAST name, bitmap);
-    else
-*/
-    success = (wxLoadIntoBitmap(WXSTRINGCAST name, bitmap, &palette) != 0);
-    if (!success && palette)
+    if ( ok )

     {
     {

-      delete palette;
-      palette = NULL;
+        // this will create a monochrome bitmap with 0 points for the pixels
+        // which have the same value as the background colour and 1 for the
+        // others
+        ::SetBkColor(srcDC, maskColour);
+        ::BitBlt(destDC, 0, 0, width, height, srcDC, 0, 0, NOTSRCCOPY);

     }
     }

-    if (palette)
-      M_BITMAPHANDLERDATA->m_bitmapPalette = *palette;
-    return success;
-#else
-  return FALSE;
-#endif
-}

 
 

-bool wxBMPFileHandler::SaveFile(wxBitmap *bitmap, const wxString& name, int type, const wxPalette *pal)
-{
-#if wxUSE_IMAGE_LOADING_IN_MSW
-    wxPalette *actualPalette = (wxPalette *)pal;
-    if (!actualPalette && (!M_BITMAPHANDLERDATA->m_bitmapPalette.IsNull()))
-      actualPalette = & (M_BITMAPHANDLERDATA->m_bitmapPalette);
-    return (wxSaveBitmap(WXSTRINGCAST name, bitmap, actualPalette) != 0);
-#else
-  return FALSE;
-#endif
+    ::SelectObject(srcDC, hbmpSrcOld);
+    ::DeleteDC(srcDC);
+    ::SelectObject(destDC, hbmpDstOld);
+    ::DeleteDC(destDC);
+
+    return ok;
+#else // __WXMICROWIN__
+    wxUnusedVar(bitmap);
+    wxUnusedVar(colour);
+    return false;
+#endif // __WXMICROWIN__/!__WXMICROWIN__

 }
 
 }
 

-class WXDLLEXPORT wxXPMFileHandler: public wxBitmapHandler
-{
-  DECLARE_DYNAMIC_CLASS(wxXPMFileHandler)
-public:
-  inline wxXPMFileHandler(void)
-  {
-  m_name = "XPM bitmap file";
-  m_extension = "xpm";
-  m_type = wxBITMAP_TYPE_XPM;
-  };
-
-  virtual bool LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
-    int desiredWidth = -1, int desiredHeight = -1);
-  virtual bool SaveFile(wxBitmap *bitmap, const wxString& name, int type, const wxPalette *palette = NULL);
-};
-IMPLEMENT_DYNAMIC_CLASS(wxXPMFileHandler, wxBitmapHandler)
+// ----------------------------------------------------------------------------
+// wxBitmapHandler
+// ----------------------------------------------------------------------------

 
 

-bool wxXPMFileHandler::LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
-    int desiredWidth, int desiredHeight)
+bool wxBitmapHandler::Create(wxGDIImage *image,
+                             const void* data,
+                             wxBitmapType type,
+                             int width, int height, int depth)

 {
 {

-#if wxUSE_XPM_IN_MSW
-    XImage *ximage;
-    XpmAttributes xpmAttr;
-    HDC     dc;
-
-    M_BITMAPHANDLERDATA->m_ok = FALSE;
-    dc = CreateCompatibleDC(NULL);
-    if (dc)
-    {
-      xpmAttr.valuemask = XpmReturnPixels;
-      int errorStatus = XpmReadFileToImage(&dc, WXSTRINGCAST name, &ximage, (XImage **) NULL, &xpmAttr);
-      DeleteDC(dc);
-      if (errorStatus == XpmSuccess)
-      {
-        M_BITMAPHANDLERDATA->m_hBitmap = (WXHBITMAP) ximage->bitmap;
-
-        BITMAP  bm;
-        GetObject((HBITMAP)M_BITMAPHANDLERDATA->m_hBitmap, sizeof(bm), (LPSTR) & bm);
-
-        M_BITMAPHANDLERDATA->m_width = (bm.bmWidth);
-        M_BITMAPHANDLERDATA->m_height = (bm.bmHeight);
-        M_BITMAPHANDLERDATA->m_depth = (bm.bmPlanes * bm.bmBitsPixel);
-        M_BITMAPHANDLERDATA->m_numColors = xpmAttr.npixels;
-        XpmFreeAttributes(&xpmAttr);
-        XImageFree(ximage);
-
-        M_BITMAPHANDLERDATA->m_ok = TRUE;
-        return TRUE;
-      }
-      else
-      {
-        M_BITMAPHANDLERDATA->m_ok = FALSE;
-        return FALSE;
-      }
-    }
-#endif
+    wxBitmap *bitmap = wxDynamicCast(image, wxBitmap);

 
 

-    return FALSE;
+    return bitmap && Create(bitmap, data, type, width, height, depth);

 }
 
 }
 

-bool wxXPMFileHandler::SaveFile(wxBitmap *bitmap, const wxString& name, int type, const wxPalette *palette)
+bool wxBitmapHandler::Load(wxGDIImage *image,
+                           const wxString& name,
+                           wxBitmapType type,
+                           int width, int height)

 {
 {

-#if wxUSE_XPM_IN_MSW
-    HDC     dc = NULL;
-    
-    XImage  ximage;
-    
-    dc = CreateCompatibleDC(NULL);
-    if (dc)
-    {
-        if (SelectObject(dc, (HBITMAP) M_BITMAPHANDLERDATA->m_hBitmap))
-        {
-            /* for following SetPixel */
-            /* fill the XImage struct 'by hand' */
-            ximage.width = M_BITMAPHANDLERDATA->m_width; 
-            ximage.height = M_BITMAPHANDLERDATA->m_height;
-            ximage.depth = M_BITMAPHANDLERDATA->m_depth; 
-            ximage.bitmap = (HBITMAP)M_BITMAPHANDLERDATA->m_hBitmap;
-            int errorStatus = XpmWriteFileFromImage(&dc, WXSTRINGCAST name,
-                &ximage, (XImage *) NULL, (XpmAttributes *) NULL);
-            
-            if (dc)
-                DeleteDC(dc);
-            
-            if (errorStatus == XpmSuccess)
-                return TRUE;    /* no error */
-            else
-                return FALSE;
-        } else return FALSE;
-    } else return FALSE;
-#else
-    return FALSE;
-#endif
-}
+    wxBitmap *bitmap = wxDynamicCast(image, wxBitmap);

 
 

-class WXDLLEXPORT wxXPMDataHandler: public wxBitmapHandler
-{
-  DECLARE_DYNAMIC_CLASS(wxXPMDataHandler)
-public:
-  inline wxXPMDataHandler(void)
-  {
-  m_name = "XPM bitmap data";
-  m_extension = "xpm";
-  m_type = wxBITMAP_TYPE_XPM_DATA;
-  };
-
-  virtual bool Create(wxBitmap *bitmap, void *data, long flags, int width, int height, int depth = 1);
-};
-IMPLEMENT_DYNAMIC_CLASS(wxXPMDataHandler, wxBitmapHandler)
+    return bitmap && LoadFile(bitmap, name, type, width, height);
+}

 
 

-bool wxXPMDataHandler::Create(wxBitmap *bitmap, void *data, long flags, int width, int height, int depth)
+bool wxBitmapHandler::Save(const wxGDIImage *image,
+                           const wxString& name,
+                           wxBitmapType type) const

 {
 {

-#if wxUSE_XPM_IN_MSW
-  XImage *ximage;
-  int     ErrorStatus;
-  XpmAttributes xpmAttr;
-  HDC     dc;
-
-  M_BITMAPHANDLERDATA->m_ok = FALSE;
-  M_BITMAPHANDLERDATA->m_numColors = 0;
-
-  dc = CreateCompatibleDC(NULL);  /* memory DC */
-
-  if (dc)
-  {
-    xpmAttr.valuemask = XpmReturnInfos; /* get infos back */
-    ErrorStatus = XpmCreateImageFromData(&dc, (char **)data,
-         &ximage, (XImage **) NULL, &xpmAttr);
-
-    if (ErrorStatus == XpmSuccess)
-    {
-      /* ximage is malloced and contains bitmap and attributes */
-      M_BITMAPHANDLERDATA->m_hBitmap = (WXHBITMAP) ximage->bitmap;
-
-      BITMAP  bm;
-      GetObject((HBITMAP) M_BITMAPHANDLERDATA->m_hBitmap, sizeof(bm), (LPSTR) & bm);
-
-      M_BITMAPHANDLERDATA->m_width = (bm.bmWidth);
-      M_BITMAPHANDLERDATA->m_height = (bm.bmHeight);
-      M_BITMAPHANDLERDATA->m_depth = (bm.bmPlanes * bm.bmBitsPixel);
-      M_BITMAPHANDLERDATA->m_numColors = xpmAttr.npixels;
-      XpmFreeAttributes(&xpmAttr);
-
-      XImageFree(ximage); // releases the malloc, but does not detroy
-                          // the bitmap
-      M_BITMAPHANDLERDATA->m_ok = TRUE;
-      DeleteDC(dc);
-
-      return TRUE;
-    } 
-    else
-    {
-      M_BITMAPHANDLERDATA->m_ok = FALSE;
-//    XpmDebugError(ErrorStatus, NULL);
-      DeleteDC(dc);
-      return FALSE;
-    }
-  }
-#endif
+    wxBitmap *bitmap = wxDynamicCast(image, wxBitmap);

 
 

-  return FALSE;
+    return bitmap && SaveFile(bitmap, name, type);

 }
 
 }
 

-void wxBitmap::CleanUpHandlers(void)
+bool wxBitmapHandler::Create(wxBitmap *WXUNUSED(bitmap),
+                             const void* WXUNUSED(data),
+                             wxBitmapType WXUNUSED(type),
+                             int WXUNUSED(width),
+                             int WXUNUSED(height),
+                             int WXUNUSED(depth))

 {
 {

-  wxNode *node = sm_handlers.First();
-  while ( node )
-  {
-    wxBitmapHandler *handler = (wxBitmapHandler *)node->Data();
-    wxNode *next = node->Next();
-    delete handler;
-    delete node;
-    node = next;
-  }
+    return false;

 }
 
 }
 

-void wxBitmap::InitStandardHandlers(void)
+bool wxBitmapHandler::LoadFile(wxBitmap *WXUNUSED(bitmap),
+                               const wxString& WXUNUSED(name),
+                               wxBitmapType WXUNUSED(type),
+                               int WXUNUSED(desiredWidth),
+                               int WXUNUSED(desiredHeight))

 {
 {

-  AddHandler(new wxBMPResourceHandler);
-  AddHandler(new wxBMPFileHandler);
-  AddHandler(new wxXPMFileHandler);
-  AddHandler(new wxXPMDataHandler);
-  AddHandler(new wxICOResourceHandler);
-  AddHandler(new wxICOFileHandler);
+    return false;

 }
 
 }
 

-static long createDIB(long xSize, long ySize, long bitsPerPixel,
-                       HPALETTE hPal, LPBITMAPINFO* lpDIBHeader)
+bool wxBitmapHandler::SaveFile(const wxBitmap *WXUNUSED(bitmap),
+                               const wxString& WXUNUSED(name),
+                               wxBitmapType WXUNUSED(type),
+                               const wxPalette *WXUNUSED(palette)) const

 {
 {

-   unsigned long   i, headerSize;
-   LPBITMAPINFO    lpDIBheader = NULL;
-   LPPALETTEENTRY  lpPe = NULL;
+    return false;
+}

 
 

+// ----------------------------------------------------------------------------
+// global helper functions implemented here
+// ----------------------------------------------------------------------------

 
 

-   // Allocate space for a DIB header
-   headerSize = (sizeof(BITMAPINFOHEADER) + (256 * sizeof(PALETTEENTRY)));
-   lpDIBheader = (BITMAPINFO *) malloc(headerSize);
-   lpPe = (PALETTEENTRY *)((BYTE*)lpDIBheader + sizeof(BITMAPINFOHEADER));
+// helper of wxBitmapToHICON/HCURSOR
+static
+HICON wxBitmapToIconOrCursor(const wxBitmap& bmp,
+                             bool iconWanted,
+                             int hotSpotX,
+                             int hotSpotY)
+{
+    if ( !bmp.IsOk() )
+    {
+        // we can't create an icon/cursor form nothing
+        return 0;
+    }

 
 

-   GetPaletteEntries(hPal, 0, 256, lpPe);
+    if ( bmp.HasAlpha() )
+    {
+        HBITMAP hbmp;
+
+#if wxUSE_WXDIB && wxUSE_IMAGE
+        // CreateIconIndirect() requires non-pre-multiplied pixel data on input
+        // as it does pre-multiplication internally itself so we need to create
+        // a special DIB in such format to pass to it. This is inefficient but
+        // better than creating an icon with wrong colours.
+        AutoHBITMAP hbmpRelease;
+        hbmp = wxDIB(bmp.ConvertToImage(),
+                     wxDIB::PixelFormat_NotPreMultiplied).Detach();
+        hbmpRelease.Init(hbmp);
+#else // !(wxUSE_WXDIB && wxUSE_IMAGE)
+        hbmp = GetHbitmapOf(bmp);
+#endif // wxUSE_WXDIB && wxUSE_IMAGE
+
+        // Create an empty mask bitmap.
+        // it doesn't seem to work if we mess with the mask at all.
+        AutoHBITMAP
+            hMonoBitmap(CreateBitmap(bmp.GetWidth(),bmp.GetHeight(),1,1,NULL));
+
+        ICONINFO iconInfo;
+        wxZeroMemory(iconInfo);
+        iconInfo.fIcon = iconWanted;  // do we want an icon or a cursor?
+        if ( !iconWanted )
+        {
+            iconInfo.xHotspot = hotSpotX;
+            iconInfo.yHotspot = hotSpotY;
+        }

 
 

+        iconInfo.hbmMask = hMonoBitmap;
+        iconInfo.hbmColor = hbmp;

 
 

-   memset(lpDIBheader, 0x00, sizeof(BITMAPINFOHEADER));
+        return ::CreateIconIndirect(&iconInfo);
+    }

 
 

+    wxMask* mask = bmp.GetMask();

 
 

-   // Fill in the static parts of the DIB header
-   lpDIBheader->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
-   lpDIBheader->bmiHeader.biWidth = xSize;
-   lpDIBheader->bmiHeader.biHeight = ySize;
-   lpDIBheader->bmiHeader.biPlanes = 1;
+    if ( !mask )
+    {
+        // we must have a mask for an icon, so even if it's probably incorrect,
+        // do create it (grey is the "standard" transparent colour)
+        mask = new wxMask(bmp, *wxLIGHT_GREY);
+    }

 
 

-   // this value must be 1, 4, 8 or 24 so PixelDepth can only be
-   lpDIBheader->bmiHeader.biBitCount = (WORD)(bitsPerPixel);
-   lpDIBheader->bmiHeader.biCompression = BI_RGB;
-   lpDIBheader->bmiHeader.biSizeImage = xSize * abs(ySize) * bitsPerPixel >>
-3;
-   lpDIBheader->bmiHeader.biClrUsed = 256;
+    ICONINFO iconInfo;
+    wxZeroMemory(iconInfo);
+    iconInfo.fIcon = iconWanted;  // do we want an icon or a cursor?
+    if ( !iconWanted )
+    {
+        iconInfo.xHotspot = hotSpotX;
+        iconInfo.yHotspot = hotSpotY;
+    }

 
 

+    AutoHBITMAP hbmpMask(wxInvertMask((HBITMAP)mask->GetMaskBitmap()));
+    iconInfo.hbmMask = hbmpMask;
+    iconInfo.hbmColor = GetHbitmapOf(bmp);

 
 

-   // Initialize the DIB palette
-   for (i = 0; i < 256; i++) {
-      lpDIBheader->bmiColors[i].rgbReserved = lpPe[i].peFlags;
-      lpDIBheader->bmiColors[i].rgbRed = lpPe[i].peRed;
-      lpDIBheader->bmiColors[i].rgbGreen = lpPe[i].peGreen;
-      lpDIBheader->bmiColors[i].rgbBlue = lpPe[i].peBlue;
-   }
+    // black out the transparent area to preserve background colour, because
+    // Windows blits the original bitmap using SRCINVERT (XOR) after applying
+    // the mask to the dest rect.
+    {
+        MemoryHDC dcSrc, dcDst;
+        SelectInHDC selectMask(dcSrc, (HBITMAP)mask->GetMaskBitmap()),
+                    selectBitmap(dcDst, iconInfo.hbmColor);

 
 

-   *lpDIBHeader = lpDIBheader;
+        if ( !::BitBlt(dcDst, 0, 0, bmp.GetWidth(), bmp.GetHeight(),
+                       dcSrc, 0, 0, SRCAND) )
+        {
+            wxLogLastError(wxT("BitBlt"));
+        }
+    }

 
 

+    HICON hicon = ::CreateIconIndirect(&iconInfo);

 
 

-   return (0);
+    if ( !bmp.GetMask() && !bmp.HasAlpha() )
+    {
+        // we created the mask, now delete it
+        delete mask;
+    }

 
 

+    return hicon;

 }
 
 }
 

-
-
-static long freeDIB(LPBITMAPINFO lpDIBHeader)
+HICON wxBitmapToHICON(const wxBitmap& bmp)

 {
 {

-
-   if (lpDIBHeader != NULL) {
-      free(lpDIBHeader);
-   }
-
-   return (0);
+    return wxBitmapToIconOrCursor(bmp, true, 0, 0);

 }
 
 }
 

-
-//-----------------------------------------------------------------------------
-// also implemented here from wxImage
-//-----------------------------------------------------------------------------
-
-/*
-class wxImage : wxGDIObject
+HCURSOR wxBitmapToHCURSOR(const wxBitmap& bmp, int hotSpotX, int hotSpotY)

 {
 {

-  wxImage( const wxBitmap &bitmap );
-  wxBitmap ConvertToBitmap() const;
+    return (HCURSOR)wxBitmapToIconOrCursor(bmp, false, hotSpotX, hotSpotY);

 }
 }

-*/

 
 

-
-wxBitmap wxImage::ConvertToBitmap() const
+HBITMAP wxInvertMask(HBITMAP hbmpMask, int w, int h)

 {
 {

-  
-  wxBitmap bitmap;
-  wxCHECK_MSG( Ok(), bitmap, "invalid image" );
-  int width = GetWidth();
-  int height = GetHeight();
-  bitmap.SetWidth( width );
-  bitmap.SetHeight( height );
-  bitmap.SetDepth( wxDisplayDepth() );
-
-  int headersize = sizeof(BITMAPINFOHEADER);
-  LPBITMAPINFO lpDIBh = (BITMAPINFO *) malloc( headersize );
-  wxCHECK_MSG( lpDIBh, bitmap, "could not allocate memory for DIB header" );
-
-// Fill in the DIB header
-  lpDIBh->bmiHeader.biSize = headersize;
-  lpDIBh->bmiHeader.biWidth = width;
-  lpDIBh->bmiHeader.biHeight = -height;
-  lpDIBh->bmiHeader.biSizeImage = width * height * 3;
-
-  lpDIBh->bmiHeader.biPlanes = 1;
-  lpDIBh->bmiHeader.biBitCount = 24;
-  lpDIBh->bmiHeader.biCompression = BI_RGB;
-  lpDIBh->bmiHeader.biClrUsed = 0;
-
-// These seem not needed for our purpose here.
-//  lpDIBh->bmiHeader.biClrImportant = 0;
-//  lpDIBh->bmiHeader.biXPelsPerMeter = 0;
-//  lpDIBh->bmiHeader.biYPelsPerMeter = 0;
-
-  unsigned char *lpBits = (unsigned char *) malloc( width*height*3 );
-  if( !lpBits )
-  {
-      wxFAIL_MSG( "could not allocate memory for DIB" );
-      free( lpDIBh );
-      return bitmap;
-  }
-
-  unsigned char *data = GetData();
-
-  unsigned char *ptdata = data, *ptbits = lpBits;
-  for( int i=0; i<width*height; i++ )
-  {
-    *(ptbits++) = *(ptdata+2);
-    *(ptbits++) = *(ptdata+1);
-    *(ptbits++) = *(ptdata  );
-    ptdata += 3;
-  }
- 
-  HDC hdc = ::GetDC(NULL);
-
-  HBITMAP hbitmap;
-  hbitmap = CreateDIBitmap( hdc, &(lpDIBh->bmiHeader), CBM_INIT, lpBits, lpDIBh, DIB_RGB_COLORS );
-    
-// The above line is equivalent to the following two lines.
-//    hbitmap = ::CreateCompatibleBitmap( hdc, width, height );
-//    ::SetDIBits( hdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS);
-// or the following lines
-//    hbitmap = ::CreateCompatibleBitmap( hdc, width, height );
-//    HDC memdc = ::CreateCompatibleDC( hdc );
-//    ::SelectObject( memdc, hbitmap); 
-//    ::SetDIBitsToDevice( memdc, 0, 0, width, height,\
-//         0, 0, 0, height, (void *)lpBits, lpDIBh, DIB_RGB_COLORS);
-//    ::SelectObject( memdc, 0 ); 
-//    ::DeleteDC( memdc ); 
-
-  bitmap.SetHBITMAP( (WXHBITMAP) hbitmap );
-
-  if( HasMask() )
-  {
-    unsigned char r = GetMaskRed();
-    unsigned char g = GetMaskGreen();
-    unsigned char b = GetMaskBlue();
-    unsigned char zero = 0, one = 255;
-    ptdata = data;
-    ptbits = lpBits;
-    for( int i=0; i<width*height; i++ )
-    {
-      if( (*(ptdata++)!=r) | (*(ptdata++)!=g) | (*(ptdata++)!=b) )
-      {
-        *(ptbits++) = zero;
-        *(ptbits++) = zero;
-        *(ptbits++) = zero;
-      }
-      else
-      {
-        *(ptbits++) = one;
-        *(ptbits++) = one;
-        *(ptbits++) = one;
-      }
-    }
-    hbitmap = ::CreateBitmap( (WORD)width, (WORD)height, 1, 1, NULL );
-    ::SetDIBits( hdc, hbitmap, 0, (WORD)height, lpBits, lpDIBh, DIB_RGB_COLORS);
-    wxMask bmpmask;
-    bmpmask.SetMaskBitmap( (WXHBITMAP) hbitmap );
-    bitmap.SetMask( &bmpmask );
-
-/* The following can also be used but is slow to run
-    wxColour colour( GetMaskRed(), GetMaskGreen(), GetMaskBlue());
-    wxMask bmpmask( bitmap, colour );
-    bitmap.SetMask( &bmpmask );
-*/
-  }
-
-  ::ReleaseDC(NULL, hdc);   
-  freeDIB(lpDIBh);
-  free(lpBits);
-
-  if( bitmap.GetHBITMAP() )
-    bitmap.SetOk( TRUE );
-  else
-    bitmap.SetOk( FALSE );
-   
-  return bitmap;
-}
+#ifndef __WXMICROWIN__
+    wxCHECK_MSG( hbmpMask, 0, wxT("invalid bitmap in wxInvertMask") );

 
 

+    // get width/height from the bitmap if not given
+    if ( !w || !h )
+    {
+        BITMAP bm;
+        ::GetObject(hbmpMask, sizeof(BITMAP), (LPVOID)&bm);
+        w = bm.bmWidth;
+        h = bm.bmHeight;
+    }

 
 

-wxImage::wxImage( const wxBitmap &bitmap )
-{
-  if( !bitmap.Ok() )
-  {
-      wxFAIL_MSG( "invalid bitmap" );
-      return;
-  }
-
-  int width = bitmap.GetWidth();
-  int height = bitmap.GetHeight();
-  Create( width, height ); 
-  unsigned char *data = GetData();
-  if( !data )
-  {
-      wxFAIL_MSG( "could not allocate data for image" );
-      return;
-  }
-    
-  int headersize = sizeof(BITMAPINFOHEADER);
-  LPBITMAPINFO lpDIBh = (BITMAPINFO *) malloc( headersize );
-  if( !lpDIBh )
-  {
-      wxFAIL_MSG( "could not allocate data for DIB header" );
-      free( data );
-      return;
-  }
-
-// Fill in the DIB header
-  lpDIBh->bmiHeader.biSize = headersize;
-  lpDIBh->bmiHeader.biWidth = width;
-  lpDIBh->bmiHeader.biHeight = -height;
-  lpDIBh->bmiHeader.biSizeImage = width * height * 3;
-
-  lpDIBh->bmiHeader.biPlanes = 1;
-  lpDIBh->bmiHeader.biBitCount = 24;
-  lpDIBh->bmiHeader.biCompression = BI_RGB;
-  lpDIBh->bmiHeader.biClrUsed = 0;
-
-// These seem not needed for our purpose here.
-//    lpDIBh->bmiHeader.biClrImportant = 0;
-//    lpDIBh->bmiHeader.biXPelsPerMeter = 0;
-//    lpDIBh->bmiHeader.biYPelsPerMeter = 0;
-
-  unsigned char *lpBits = (unsigned char *) malloc( width*height*3 );
-  if( !lpBits )
-  {
-      wxFAIL_MSG( "could not allocate data for DIB" );
-      free( data );
-      free( lpDIBh );
-      return;
-  }
-    
-  HBITMAP hbitmap;
-  hbitmap = (HBITMAP) bitmap.GetHBITMAP();
-  HDC hdc = ::GetDC(NULL);
-  ::GetDIBits( hdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS );
-       
-  unsigned char *ptdata = data, *ptbits = lpBits;
-  for( int i=0; i<width*height; i++ )
-  {
-    *(ptdata++) = *(ptbits+2);
-    *(ptdata++) = *(ptbits+1);
-    *(ptdata++) = *(ptbits  );
-    ptbits += 3;
-  }    
-      
-  if( bitmap.GetMask() && bitmap.GetMask()->GetMaskBitmap() )
-  {
-    hbitmap = (HBITMAP) bitmap.GetMask()->GetMaskBitmap();
-    HDC memdc = ::CreateCompatibleDC( hdc );
-    ::SetTextColor( memdc, RGB( 0, 0, 0 ) );
-    ::SetBkColor( memdc, RGB( 255, 255, 255 ) );
-    ::GetDIBits( memdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS );
-    ::DeleteDC( memdc ); 
-    unsigned char r=16, g=16, b=16;  // background set to RGB(16,16,16)
-    ptdata = data;
-    ptbits = lpBits;
-    for( int i=0; i<width*height; i++ )
-    {
-      if( *ptbits != 0 )
-      {
-        *(ptdata++)  = r;
-        *(ptdata++)  = g;
-        *(ptdata++)  = b;
-      }
-      ptbits += 3;
-    }       
-    SetMaskColour( r, g, b );
-  }    
-      
-  ::ReleaseDC(NULL, hdc);   
-  freeDIB(lpDIBh);
-  free(lpBits);
-}
+    HDC hdcSrc = ::CreateCompatibleDC(NULL);
+    HDC hdcDst = ::CreateCompatibleDC(NULL);
+    if ( !hdcSrc || !hdcDst )
+    {
+        wxLogLastError(wxT("CreateCompatibleDC"));
+    }

 
 

+    HBITMAP hbmpInvMask = ::CreateBitmap(w, h, 1, 1, 0);
+    if ( !hbmpInvMask )
+    {
+        wxLogLastError(wxT("CreateBitmap"));
+    }

 
 

+    HGDIOBJ srcTmp = ::SelectObject(hdcSrc, hbmpMask);
+    HGDIOBJ dstTmp = ::SelectObject(hdcDst, hbmpInvMask);
+    if ( !::BitBlt(hdcDst, 0, 0, w, h,
+                   hdcSrc, 0, 0,
+                   NOTSRCCOPY) )
+    {
+        wxLogLastError(wxT("BitBlt"));
+    }
+
+    // Deselect objects
+    SelectObject(hdcSrc,srcTmp);
+    SelectObject(hdcDst,dstTmp);
+
+    ::DeleteDC(hdcSrc);
+    ::DeleteDC(hdcDst);
+
+    return hbmpInvMask;
+#else
+    return 0;
+#endif
+}