X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/e5d4ef7410d597bdf6d426ceedc656dbefd69e90..0bbe61b8c18a1795189f0cf73cc61c14a0fb846d:/src/msw/bitmap.cpp

diff --git a/src/msw/bitmap.cpp b/src/msw/bitmap.cpp
index b80b7989d9..725d5fd0cb 100644
--- a/src/msw/bitmap.cpp
+++ b/src/msw/bitmap.cpp
@@ -1,5 +1,5 @@
 ////////////////////////////////////////////////////////////////////////////
-// Name:        bitmap.cpp
+// Name:        src/msw/bitmap.cpp
 // Purpose:     wxBitmap
 // Author:      Julian Smart
 // Modified by:
@@ -17,10 +17,6 @@
 // headers
 // ----------------------------------------------------------------------------
 
-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
-    #pragma implementation "bitmap.h"
-#endif
-
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
@@ -28,6 +24,8 @@
     #pragma hdrstop
 #endif
 
+#include "wx/bitmap.h"
+
 #ifndef WX_PRECOMP
     #include <stdio.h>
 
@@ -36,22 +34,20 @@
     #include "wx/app.h"
     #include "wx/palette.h"
     #include "wx/dcmemory.h"
-    #include "wx/bitmap.h"
     #include "wx/icon.h"
+    #include "wx/log.h"
+    #include "wx/image.h"
 #endif
 
 #include "wx/msw/private.h"
-#include "wx/log.h"
+#include "wx/msw/dc.h"
 
 #if wxUSE_WXDIB
-#include "wx/msw/dib.h"
+    #include "wx/msw/dib.h"
 #endif
 
-#include "wx/image.h"
-#include "wx/xpmdecod.h"
-
 #ifdef wxHAVE_RAW_BITMAP
-#include "wx/rawbmp.h"
+    #include "wx/rawbmp.h"
 #endif
 
 // missing from mingw32 header
@@ -210,8 +206,13 @@ wxBitmapRefData::wxBitmapRefData(const wxBitmapRefData& data)
     m_selectedInto = NULL;
 #endif
 
-    // can't copy the mask as the other bitmap destroys it
+    // (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,
                     _T("can't copy bitmap locked for raw access!") );
@@ -245,24 +246,22 @@ void wxBitmapRefData::Free()
 // wxBitmap creation
 // ----------------------------------------------------------------------------
 
-// this function should be called from all wxBitmap ctors
-void wxBitmap::Init()
-{
-    // m_refData = NULL; done in the base class ctor
-}
-
 wxGDIImageRefData *wxBitmap::CreateData() const
 {
     return new wxBitmapRefData;
 }
 
-wxObjectRefData *wxBitmap::CloneRefData(const wxObjectRefData *dataOrig) const
+wxGDIRefData *wxBitmap::CloneGDIRefData(const wxGDIRefData *dataOrig) const
 {
     const wxBitmapRefData *
         data = wx_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 = wx_const_cast(wxBitmap *, this);
 
 #if wxUSE_WXDIB
@@ -275,16 +274,25 @@ wxObjectRefData *wxBitmap::CloneRefData(const wxObjectRefData *dataOrig) const
     else
 #endif // wxUSE_WXDIB
     {
-        // don't copy the bitmap data, but do copy the size, depth, ...
+        // copy the bitmap data
         self->m_refData = new wxBitmapRefData(*data);
     }
 
-    return m_refData;
-}
+    wxBitmapRefData * const
+        selfdata = wx_static_cast(wxBitmapRefData *, m_refData);
 
-#ifdef __WIN32__
+    // copy also the mask
+    wxMask * const maskSrc = data->GetMask();
+    if ( maskSrc )
+    {
+        selfdata->SetMask(new wxMask(*maskSrc));
+    }
+
+    return selfdata;
+}
 
-bool wxBitmap::CopyFromIconOrCursor(const wxGDIImage& icon)
+bool wxBitmap::CopyFromIconOrCursor(const wxGDIImage& icon,
+                                    wxBitmapTransparency transp)
 {
 #if !defined(__WXMICROWIN__) && !defined(__WXWINCE__)
     // it may be either HICON or HCURSOR
@@ -310,41 +318,88 @@ bool wxBitmap::CopyFromIconOrCursor(const wxGDIImage& icon)
 
     refData->m_hBitmap = (WXHBITMAP)iconInfo.hbmColor;
 
-    // the mask returned by GetIconInfo() is inversed compared to the usual
-    // wxWin convention
-    refData->SetMask(wxInvertMask(iconInfo.hbmMask, w, h));
+    switch ( transp )
+    {
+        default:
+            wxFAIL_MSG( _T("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
+#else // __WXMICROWIN__ || __WXWINCE__
     wxUnusedVar(icon);
+    wxUnusedVar(transp);
+
     return false;
-#endif
+#endif // !__WXWINCE__/__WXWINCE__
 }
 
-#endif // Win32
-
-bool wxBitmap::CopyFromCursor(const wxCursor& cursor)
+bool wxBitmap::CopyFromCursor(const wxCursor& cursor, wxBitmapTransparency transp)
 {
     UnRef();
 
     if ( !cursor.Ok() )
         return false;
 
-    return CopyFromIconOrCursor(cursor);
+    return CopyFromIconOrCursor(cursor, transp);
 }
 
-bool wxBitmap::CopyFromIcon(const wxIcon& icon)
+bool wxBitmap::CopyFromIcon(const wxIcon& icon, wxBitmapTransparency transp)
 {
     UnRef();
 
     if ( !icon.Ok() )
         return false;
 
-    return CopyFromIconOrCursor(icon);
+    return CopyFromIconOrCursor(icon, transp);
 }
 
 #ifndef NEVER_USE_DIB
@@ -393,8 +448,6 @@ wxBitmap::~wxBitmap()
 
 wxBitmap::wxBitmap(const char bits[], int width, int height, int depth)
 {
-    Init();
-
 #ifndef __WXMICROWIN__
     wxBitmapRefData *refData = new wxBitmapRefData;
     m_refData = refData;
@@ -408,7 +461,7 @@ wxBitmap::wxBitmap(const char bits[], int width, int height, int depth)
     {
         // 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!
+        // line is reversed!
         const size_t bytesPerLine = (width + 7) / 8;
         const size_t padding = bytesPerLine % 2;
         const size_t len = height * ( padding + bytesPerLine );
@@ -426,10 +479,10 @@ wxBitmap::wxBitmap(const char bits[], int width, int height, int depth)
                 for ( int bits = 0; bits < 8; bits++)
                 {
                     reversed <<= 1;
-                    reversed |= (val & 0x01);
+                    reversed |= (unsigned char)(val & 0x01);
                     val >>= 1;
                 }
-                *dst++ = reversed;
+                *dst++ = ~reversed;
             }
 
             if ( padding )
@@ -457,51 +510,23 @@ wxBitmap::wxBitmap(const char bits[], int width, int height, int depth)
 #endif
 }
 
-// Create from XPM data
-bool wxBitmap::CreateFromXpm(const char **data)
-{
-#if wxUSE_IMAGE && wxUSE_XPM
-    Init();
-
-    wxCHECK_MSG( data != NULL, false, wxT("invalid bitmap data") )
-
-    wxXPMDecoder decoder;
-    wxImage img = decoder.ReadData(data);
-    wxCHECK_MSG( img.Ok(), false, wxT("invalid bitmap data") )
-
-    *this = wxBitmap(img);
-    return true;
-#else
-    wxUnusedVar(data);
-    return false;
-#endif
-}
-
 wxBitmap::wxBitmap(int w, int h, int d)
 {
-    Init();
-
     (void)Create(w, h, d);
 }
 
 wxBitmap::wxBitmap(int w, int h, const wxDC& dc)
 {
-    Init();
-
     (void)Create(w, h, dc);
 }
 
-wxBitmap::wxBitmap(void *data, long type, int width, int height, int depth)
+wxBitmap::wxBitmap(const void* data, long type, int width, int height, int depth)
 {
-    Init();
-
     (void)Create(data, type, width, height, depth);
 }
 
 wxBitmap::wxBitmap(const wxString& filename, wxBitmapType type)
 {
-    Init();
-
     LoadFile(filename, (int)type);
 }
 
@@ -512,9 +537,14 @@ bool wxBitmap::Create(int width, int height, int depth)
 
 bool wxBitmap::Create(int width, int height, const wxDC& dc)
 {
-    wxCHECK_MSG( dc.Ok(), false, _T("invalid HDC in wxBitmap::Create()") );
+    wxCHECK_MSG( dc.IsOk(), false, _T("invalid HDC in wxBitmap::Create()") );
 
-    return DoCreate(width, height, -1, dc.GetHDC());
+    const wxMSWDCImpl *impl = wxDynamicCast( dc.GetImpl(), wxMSWDCImpl );
+    
+    if (impl)
+        return DoCreate(width, height, -1, impl->GetHDC());
+    else
+        return false;
 }
 
 bool wxBitmap::DoCreate(int w, int h, int d, WXHDC hdc)
@@ -775,8 +805,6 @@ wxImage wxBitmap::ConvertToImage() const
 // wxImage to/from conversions
 // ----------------------------------------------------------------------------
 
-#if wxUSE_WXDIB
-
 bool wxBitmap::CreateFromImage(const wxImage& image, int depth)
 {
     return CreateFromImage(image, depth, 0);
@@ -784,12 +812,19 @@ bool wxBitmap::CreateFromImage(const wxImage& image, int depth)
 
 bool wxBitmap::CreateFromImage(const wxImage& image, const wxDC& dc)
 {
-    wxCHECK_MSG( dc.Ok(), false,
+    wxCHECK_MSG( dc.IsOk(), false,
                     _T("invalid HDC in wxBitmap::CreateFromImage()") );
 
-    return CreateFromImage(image, -1, dc.GetHDC());
+    const wxMSWDCImpl *impl = wxDynamicCast( dc.GetImpl(), wxMSWDCImpl );
+    
+    if (impl)
+        return CreateFromImage(image, -1, impl->GetHDC());
+    else
+        return false;
 }
 
+#if wxUSE_WXDIB
+
 bool wxBitmap::CreateFromImage(const wxImage& image, int depth, WXHDC hdc)
 {
     wxCHECK_MSG( image.Ok(), false, wxT("invalid image") );
@@ -804,6 +839,8 @@ bool wxBitmap::CreateFromImage(const wxImage& image, int depth, WXHDC hdc)
     if ( !dib.IsOk() )
         return false;
 
+    if ( depth == -1 )
+        depth = dib.GetDepth(); // Get depth from image if none specified
 
     // store the bitmap parameters
     wxBitmapRefData *refData = new wxBitmapRefData;
@@ -826,14 +863,14 @@ bool wxBitmap::CreateFromImage(const wxImage& image, int depth, WXHDC hdc)
         hbitmap = dib.Detach();
 
         refData->m_isDIB = true;
-        refData->m_depth = dib.GetDepth();
+        refData->m_depth = depth;
     }
 #ifndef ALWAYS_USE_DIB
     else // we need to convert DIB to DDB
     {
         hbitmap = dib.CreateDDB((HDC)hdc);
 
-        refData->m_depth = depth == -1 ? dib.GetDepth() : depth;
+        refData->m_depth = depth;
     }
 #endif // !ALWAYS_USE_DIB
 
@@ -843,9 +880,42 @@ bool wxBitmap::CreateFromImage(const wxImage& image, int depth, WXHDC hdc)
     // finally also set the mask if we have one
     if ( image.HasMask() )
     {
-        SetMask(new wxMask(*this, wxColour(image.GetMaskRed(),
-                                           image.GetMaskGreen(),
-                                           image.GetMaskBlue())));
+        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(_T("CreateBitmap(mask)"));
+        }
+        else
+        {
+            SetMask(new wxMask((WXHBITMAP)hbitmap));
+        }
+
+        delete[] data;
     }
 
     return true;
@@ -934,7 +1004,22 @@ wxImage wxBitmap::ConvertToImage() const
     return image;
 }
 
-#endif // wxUSE_WXDIB
+#else // !wxUSE_WXDIB
+
+bool
+wxBitmap::CreateFromImage(const wxImage& WXUNUSED(image),
+                          int WXUNUSED(depth),
+                          WXHDC WXUNUSED(hdc))
+{
+    return false;
+}
+
+wxImage wxBitmap::ConvertToImage() const
+{
+    return wxImage();
+}
+
+#endif // wxUSE_WXDIB/!wxUSE_WXDIB
 
 #endif // wxUSE_IMAGE
 
@@ -954,7 +1039,7 @@ bool wxBitmap::LoadFile(const wxString& filename, long type)
 
         return handler->LoadFile(this, filename, type, -1, -1);
     }
-#if wxUSE_IMAGE
+#if wxUSE_IMAGE && wxUSE_WXDIB
     else // no bitmap handler found
     {
         wxImage image;
@@ -970,7 +1055,7 @@ bool wxBitmap::LoadFile(const wxString& filename, long type)
     return false;
 }
 
-bool wxBitmap::Create(void *data, long type, int width, int height, int depth)
+bool wxBitmap::Create(const void* data, long type, int width, int height, int depth)
 {
     UnRef();
 
@@ -998,7 +1083,7 @@ bool wxBitmap::SaveFile(const wxString& filename,
     {
         return handler->SaveFile(this, filename, type, palette);
     }
-#if wxUSE_IMAGE
+#if wxUSE_IMAGE && wxUSE_WXDIB
     else // no bitmap handler found
     {
         // FIXME what about palette? shouldn't we use it?
@@ -1016,8 +1101,14 @@ bool wxBitmap::SaveFile(const wxString& filename,
 // ----------------------------------------------------------------------------
 // sub bitmap extraction
 // ----------------------------------------------------------------------------
+wxBitmap wxBitmap::GetSubBitmap( const wxRect& rect ) const
+{
+        MemoryHDC dcSrc;
+        SelectInHDC selectSrc(dcSrc, GetHbitmap());
+        return GetSubBitmapOfHDC( rect, (WXHDC)dcSrc );
+}
 
-wxBitmap wxBitmap::GetSubBitmap( const wxRect& rect) const
+wxBitmap wxBitmap::GetSubBitmapOfHDC( const wxRect& rect, WXHDC hdc ) const
 {
     wxCHECK_MSG( Ok() &&
                  (rect.x >= 0) && (rect.y >= 0) &&
@@ -1031,23 +1122,22 @@ wxBitmap wxBitmap::GetSubBitmap( const wxRect& rect) const
 #ifndef __WXMICROWIN__
     // handle alpha channel, if any
     if (HasAlpha())
-	ret.UseAlpha();
+        ret.UseAlpha();
 
     // copy bitmap data
     MemoryHDC dcSrc,
               dcDst;
 
     {
-        SelectInHDC selectSrc(dcSrc, GetHbitmap()),
-                    selectDst(dcDst, GetHbitmapOf(ret));
-
-        if ( !selectSrc || !selectDst )
+        SelectInHDC selectDst(dcDst, GetHbitmapOf(ret));
+		
+        if ( !selectDst )
         {
-            wxLogLastError(_T("SelectObjct(hBitmap)"));
+            wxLogLastError(_T("SelectObject(destBitmap)"));
         }
 
         if ( !::BitBlt(dcDst, 0, 0, rect.width, rect.height,
-                       dcSrc, rect.x, rect.y, SRCCOPY) )
+                       (HDC)hdc, rect.x, rect.y, SRCCOPY) )
         {
             wxLogLastError(_T("BitBlt"));
         }
@@ -1092,6 +1182,15 @@ wxMask *wxBitmap::GetMask() const
     return GetBitmapData() ? GetBitmapData()->GetMask() : (wxMask *) NULL;
 }
 
+wxBitmap wxBitmap::GetMaskBitmap() const
+{
+    wxBitmap bmp;
+    wxMask *mask = GetMask();
+    if ( mask )
+        bmp.SetHBITMAP(mask->GetMaskBitmap());
+    return bmp;
+}
+
 #ifdef __WXDEBUG__
 
 wxDC *wxBitmap::GetSelectedInto() const
@@ -1101,15 +1200,6 @@ wxDC *wxBitmap::GetSelectedInto() const
 
 #endif
 
-#if WXWIN_COMPATIBILITY_2_4
-
-int wxBitmap::GetQuality() const
-{
-    return 0;
-}
-
-#endif // WXWIN_COMPATIBILITY_2_4
-
 void wxBitmap::UseAlpha()
 {
     if ( GetBitmapData() )
@@ -1153,14 +1243,6 @@ void wxBitmap::SetMask(wxMask *mask)
     GetBitmapData()->SetMask(mask);
 }
 
-#if WXWIN_COMPATIBILITY_2_4
-
-void wxBitmap::SetQuality(int WXUNUSED(quality))
-{
-}
-
-#endif // WXWIN_COMPATIBILITY_2_4
-
 // ----------------------------------------------------------------------------
 // raw bitmap access support
 // ----------------------------------------------------------------------------
@@ -1181,7 +1263,7 @@ void *wxBitmap::GetRawData(wxPixelDataBase& data, int bpp)
     HBITMAP hDIB;
     if ( !GetBitmapData()->m_isDIB )
     {
-        wxCHECK_MSG( !GetBitmapData()->m_dib, FALSE,
+        wxCHECK_MSG( !GetBitmapData()->m_dib, NULL,
                         _T("GetRawData() may be called only once") );
 
         wxDIB *dib = new wxDIB(*this);
@@ -1282,6 +1364,39 @@ wxMask::wxMask()
     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)
@@ -1447,13 +1562,13 @@ bool wxMask::Create(const wxBitmap& bitmap, const wxColour& colour)
 // ----------------------------------------------------------------------------
 
 bool wxBitmapHandler::Create(wxGDIImage *image,
-                             void *data,
+                             const void* data,
                              long flags,
                              int width, int height, int depth)
 {
     wxBitmap *bitmap = wxDynamicCast(image, wxBitmap);
 
-    return bitmap ? Create(bitmap, data, flags, width, height, depth) : false;
+    return bitmap && Create(bitmap, data, flags, width, height, depth);
 }
 
 bool wxBitmapHandler::Load(wxGDIImage *image,
@@ -1463,7 +1578,7 @@ bool wxBitmapHandler::Load(wxGDIImage *image,
 {
     wxBitmap *bitmap = wxDynamicCast(image, wxBitmap);
 
-    return bitmap ? LoadFile(bitmap, name, flags, width, height) : false;
+    return bitmap && LoadFile(bitmap, name, flags, width, height);
 }
 
 bool wxBitmapHandler::Save(wxGDIImage *image,
@@ -1472,11 +1587,11 @@ bool wxBitmapHandler::Save(wxGDIImage *image,
 {
     wxBitmap *bitmap = wxDynamicCast(image, wxBitmap);
 
-    return bitmap ? SaveFile(bitmap, name, type) : false;
+    return bitmap && SaveFile(bitmap, name, type);
 }
 
 bool wxBitmapHandler::Create(wxBitmap *WXUNUSED(bitmap),
-                             void *WXUNUSED(data),
+                             const void* WXUNUSED(data),
                              long WXUNUSED(type),
                              int WXUNUSED(width),
                              int WXUNUSED(height),
@@ -1502,57 +1617,6 @@ bool wxBitmapHandler::SaveFile(wxBitmap *WXUNUSED(bitmap),
     return false;
 }
 
-// ----------------------------------------------------------------------------
-// DIB functions
-// ----------------------------------------------------------------------------
-
-#ifndef __WXMICROWIN__
-bool wxCreateDIB(long xSize, long ySize, long bitsPerPixel,
-                 HPALETTE hPal, LPBITMAPINFO* lpDIBHeader)
-{
-   unsigned long   i, headerSize;
-
-   // Allocate space for a DIB header
-   headerSize = (sizeof(BITMAPINFOHEADER) + (256 * sizeof(PALETTEENTRY)));
-   LPBITMAPINFO lpDIBheader = (BITMAPINFO *) malloc(headerSize);
-   LPPALETTEENTRY lpPe = (PALETTEENTRY *)((BYTE*)lpDIBheader + sizeof(BITMAPINFOHEADER));
-
-   GetPaletteEntries(hPal, 0, 256, lpPe);
-
-   memset(lpDIBheader, 0x00, sizeof(BITMAPINFOHEADER));
-
-   // 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;
-
-   // 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;
-
-
-   // 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;
-   }
-
-   *lpDIBHeader = lpDIBheader;
-
-   return true;
-}
-
-void wxFreeDIB(LPBITMAPINFO lpDIBHeader)
-{
-    free(lpDIBHeader);
-}
-#endif
-
 // ----------------------------------------------------------------------------
 // global helper functions implemented here
 // ----------------------------------------------------------------------------
@@ -1570,7 +1634,33 @@ HICON wxBitmapToIconOrCursor(const wxBitmap& bmp,
         return 0;
     }
 
-    wxMask *mask = bmp.GetMask();
+    if ( bmp.HasAlpha() )
+    {
+        // Create an empty mask bitmap.
+        // it doesn't seem to work if we mess with the mask at all.
+        HBITMAP 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 = GetHbitmapOf(bmp);
+
+        HICON hicon = ::CreateIconIndirect(&iconInfo);
+
+        ::DeleteObject(hMonoBitmap);
+
+        return hicon;
+    }
+
+    wxMask* mask = bmp.GetMask();
+
     if ( !mask )
     {
         // we must have a mask for an icon, so even if it's probably incorrect,
@@ -1607,7 +1697,7 @@ HICON wxBitmapToIconOrCursor(const wxBitmap& bmp,
 
     HICON hicon = ::CreateIconIndirect(&iconInfo);
 
-    if ( !bmp.GetMask() )
+    if ( !bmp.GetMask() && !bmp.HasAlpha() )
     {
         // we created the mask, now delete it
         delete mask;