X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/3f480da37ca0840ddbe48b908d511d2e9fc20bf4..eea4d01c65f9b29baa1193db762b4c6b8144af24:/src/msw/clipbrd.cpp

diff --git a/src/msw/clipbrd.cpp b/src/msw/clipbrd.cpp
index 9220ab567f..da105ae254 100644
--- a/src/msw/clipbrd.cpp
+++ b/src/msw/clipbrd.cpp
@@ -1,12 +1,12 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        clipbrd.cpp
+// Name:        src/msw/clipbrd.cpp
 // Purpose:     Clipboard functionality
 // 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
 /////////////////////////////////////////////////////////////////////////////
 
 // ===========================================================================
@@ -17,10 +17,6 @@
 // headers
 // ---------------------------------------------------------------------------
 
-#ifdef __GNUG__
-    #pragma implementation "clipbrd.h"
-#endif
-
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
@@ -28,12 +24,10 @@
     #pragma hdrstop
 #endif
 
-#ifndef WX_PRECOMP
-    #include "wx/setup.h"
-#endif
-
 #if wxUSE_CLIPBOARD
 
+#include "wx/clipbrd.h"
+
 #ifndef WX_PRECOMP
     #include "wx/object.h"
     #include "wx/event.h"
@@ -41,33 +35,41 @@
     #include "wx/frame.h"
     #include "wx/bitmap.h"
     #include "wx/utils.h"
+    #include "wx/intl.h"
+    #include "wx/log.h"
+    #include "wx/dataobj.h"
 #endif
 
 #if wxUSE_METAFILE
     #include "wx/metafile.h"
 #endif
 
-#include "wx/log.h"
-#include "wx/clipbrd.h"
 
 #include <string.h>
-#include <windows.h>
 
 #include "wx/msw/private.h"
-#include "wx/msw/dib.h"
+#include "wx/msw/ole/oleutils.h"
 
-// wxDataObject is tied to OLE/drag and drop implementation,
-// therefore so is wxClipboard :-(
-#if wxUSE_DRAG_AND_DROP
-    #include "wx/dataobj.h"
-
-    static bool wxSetClipboardData(wxDataObject *data);
+#if wxUSE_WXDIB
+    #include "wx/msw/dib.h"
 #endif
 
-#ifdef __WIN16__
-    #define memcpy hmemcpy
+// wxDataObject is tied to OLE/drag and drop implementation, therefore so are
+// the functions using wxDataObject in wxClipboard
+//#define wxUSE_DATAOBJ wxUSE_DRAG_AND_DROP
+
+#if wxUSE_OLE && !defined(__WXWINCE__)
+    // use OLE clipboard
+    #define wxUSE_OLE_CLIPBOARD 1
+#else // !wxUSE_DATAOBJ
+    // use Win clipboard API
+    #define wxUSE_OLE_CLIPBOARD 0
 #endif
 
+#if wxUSE_OLE_CLIPBOARD
+    #include <ole2.h>
+#endif // wxUSE_OLE_CLIPBOARD
+
 // ===========================================================================
 // implementation
 // ===========================================================================
@@ -76,11 +78,11 @@
 // old-style clipboard functions using Windows API
 // ---------------------------------------------------------------------------
 
-static bool gs_wxClipboardIsOpen = FALSE;
+static bool gs_wxClipboardIsOpen = false;
 
 bool wxOpenClipboard()
 {
-    wxCHECK_MSG( !gs_wxClipboardIsOpen, TRUE, "clipboard already opened." );
+    wxCHECK_MSG( !gs_wxClipboardIsOpen, true, wxT("clipboard already opened.") );
 
     wxWindow *win = wxTheApp->GetTopWindow();
     if ( win )
@@ -88,32 +90,34 @@ bool wxOpenClipboard()
         gs_wxClipboardIsOpen = ::OpenClipboard((HWND)win->GetHWND()) != 0;
 
         if ( !gs_wxClipboardIsOpen )
+        {
             wxLogSysError(_("Failed to open the clipboard."));
+        }
 
         return gs_wxClipboardIsOpen;
     }
     else
     {
-        wxLogDebug("Can not open clipboard without a main window,");
+        wxLogDebug(wxT("Cannot open clipboard without a main window."));
 
-        return FALSE;
+        return false;
     }
 }
 
 bool wxCloseClipboard()
 {
-    wxCHECK_MSG( gs_wxClipboardIsOpen, FALSE, "clipboard is not opened" );
+    wxCHECK_MSG( gs_wxClipboardIsOpen, false, wxT("clipboard is not opened") );
 
-    gs_wxClipboardIsOpen = FALSE;
+    gs_wxClipboardIsOpen = false;
 
     if ( ::CloseClipboard() == 0 )
     {
         wxLogSysError(_("Failed to close the clipboard."));
 
-        return FALSE;
+        return false;
     }
 
-    return TRUE;
+    return true;
 }
 
 bool wxEmptyClipboard()
@@ -122,10 +126,10 @@ bool wxEmptyClipboard()
     {
         wxLogSysError(_("Failed to empty the clipboard."));
 
-        return FALSE;
+        return false;
     }
 
-    return TRUE;
+    return true;
 }
 
 bool wxIsClipboardOpened()
@@ -135,40 +139,31 @@ bool wxIsClipboardOpened()
 
 bool wxIsClipboardFormatAvailable(wxDataFormat dataFormat)
 {
-    return ::IsClipboardFormatAvailable(dataFormat) != 0;
-}
+   wxDataFormat::NativeFormat cf = dataFormat.GetFormatId();
 
-#if wxUSE_DRAG_AND_DROP
-static bool wxSetClipboardData(wxDataObject *data)
-{
-    size_t size = data->GetDataSize();
-    HANDLE hGlobal = ::GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE, size);
-    if ( !hGlobal )
+    if ( ::IsClipboardFormatAvailable(cf) )
     {
-        wxLogSysError(_("Failed to allocate %dKb of memory for clipboard "
-                        "transfer."), size / 1024);
-
-        return FALSE;
+        // ok from the first try
+        return true;
     }
 
-    LPVOID lpGlobalMemory = ::GlobalLock(hGlobal);
-
-    data->GetDataHere(lpGlobalMemory);
-
-    GlobalUnlock(hGlobal);
-
-    wxDataFormat format = data->GetPreferredFormat();
-    if ( !::SetClipboardData(format, hGlobal) )
+    // for several standard formats, we can convert from some other ones too
+    switch ( cf )
     {
-        wxLogSysError(_("Failed to set clipboard data in format %s"),
-                      wxDataObject::GetFormatName(format));
+        // for bitmaps, DIBs will also do
+        case CF_BITMAP:
+            return ::IsClipboardFormatAvailable(CF_DIB) != 0;
 
-        return FALSE;
-    }
+#if wxUSE_ENH_METAFILE && !defined(__WXWINCE__)
+        case CF_METAFILEPICT:
+            return ::IsClipboardFormatAvailable(CF_ENHMETAFILE) != 0;
+#endif // wxUSE_ENH_METAFILE
 
-    return TRUE;
+        default:
+            return false;
+    }
 }
-#endif // wxUSE_DRAG_AND_DROP
+
 
 bool wxSetClipboardData(wxDataFormat dataFormat,
                         const void *data,
@@ -194,7 +189,7 @@ bool wxSetClipboardData(wxDataFormat dataFormat,
                     SelectObject(hdcSrc, old);
                     DeleteDC(hdcMem);
                     DeleteDC(hdcSrc);
-                    return FALSE;
+                    return false;
                 }
 
                 HBITMAP old1 = (HBITMAP) SelectObject(hdcMem, hBitmap);
@@ -214,19 +209,27 @@ bool wxSetClipboardData(wxDataFormat dataFormat,
                 break;
             }
 
+#if wxUSE_WXDIB
         case wxDF_DIB:
             {
-#if wxUSE_IMAGE_LOADING_IN_MSW
                 wxBitmap *bitmap = (wxBitmap *)data;
-                HBITMAP hBitmap = (HBITMAP)bitmap->GetHBITMAP();
-                // NULL palette means to use the system one
-                HANDLE hDIB = BitmapToDIB(hBitmap, (HPALETTE)NULL); 
-                handle = SetClipboardData(CF_DIB, hDIB);
-#endif
+
+                if ( bitmap && bitmap->IsOk() )
+                {
+                    wxDIB dib(*bitmap);
+                    if ( dib.IsOk() )
+                    {
+                        handle = ::SetClipboardData(CF_DIB, dib.Detach());
+                    }
+                }
                 break;
             }
+#endif
 
-#if wxUSE_METAFILE
+    // VZ: I'm told that this code works, but it doesn't seem to work for me
+    //     and, anyhow, I'd be highly surprised if it did. So I leave it here
+    //     but IMNSHO it is completely broken.
+#if wxUSE_METAFILE && !defined(wxMETAFILE_IS_ENH) && !defined(__WXWINCE__)
         case wxDF_METAFILE:
             {
                 wxMetafile *wxMF = (wxMetafile *)data;
@@ -243,7 +246,20 @@ bool wxSetClipboardData(wxDataFormat dataFormat,
                 handle = SetClipboardData(CF_METAFILEPICT, data);
                 break;
             }
-#endif
+#endif // wxUSE_METAFILE
+
+#if wxUSE_ENH_METAFILE && !defined(__WXWINCE__)
+        case wxDF_ENHMETAFILE:
+            {
+                wxEnhMetaFile *emf = (wxEnhMetaFile *)data;
+                wxEnhMetaFile emfCopy = *emf;
+
+                handle = SetClipboardData(CF_ENHMETAFILE,
+                                          (void *)emfCopy.GetHENHMETAFILE());
+            }
+            break;
+#endif // wxUSE_ENH_METAFILE
+
         case CF_SYLK:
         case CF_DIF:
         case CF_TIFF:
@@ -251,7 +267,7 @@ bool wxSetClipboardData(wxDataFormat dataFormat,
         default:
             {
                 wxLogError(_("Unsupported clipboard format."));
-                return FALSE;
+                return false;
             }
 
         case wxDF_OEMTEXT:
@@ -278,16 +294,90 @@ bool wxSetClipboardData(wxDataFormat dataFormat,
                 handle = SetClipboardData(dataFormat, hGlobalMemory);
                 break;
             }
+            // Only tested with Visual C++ 6.0 so far
+#if defined(__VISUALC__)
+        case wxDF_HTML:
+            {
+                char* html = (char *)data;
+
+                // Create temporary buffer for HTML header...
+                char *buf = new char [400 + strlen(html)];
+                if(!buf) return false;
+
+                // Get clipboard id for HTML format...
+                static int cfid = 0;
+                if(!cfid) cfid = RegisterClipboardFormat(wxT("HTML Format"));
+
+                // Create a template string for the HTML header...
+                strcpy(buf,
+                    "Version:0.9\r\n"
+                    "StartHTML:00000000\r\n"
+                    "EndHTML:00000000\r\n"
+                    "StartFragment:00000000\r\n"
+                    "EndFragment:00000000\r\n"
+                    "<html><body>\r\n"
+                    "<!--StartFragment -->\r\n");
+
+                // Append the HTML...
+                strcat(buf, html);
+                strcat(buf, "\r\n");
+                // Finish up the HTML format...
+                strcat(buf,
+                    "<!--EndFragment-->\r\n"
+                    "</body>\r\n"
+                    "</html>");
+
+                // Now go back, calculate all the lengths, and write out the
+                // necessary header information. Note, wsprintf() truncates the
+                // string when you overwrite it so you follow up with code to replace
+                // the 0 appended at the end with a '\r'...
+                char *ptr = strstr(buf, "StartHTML");
+                sprintf(ptr+10, "%08u", strstr(buf, "<html>") - buf);
+                *(ptr+10+8) = '\r';
+
+                ptr = strstr(buf, "EndHTML");
+                sprintf(ptr+8, "%08u", strlen(buf));
+                *(ptr+8+8) = '\r';
+
+                ptr = strstr(buf, "StartFragment");
+                sprintf(ptr+14, "%08u", strstr(buf, "<!--StartFrag") - buf);
+                *(ptr+14+8) = '\r';
+
+                ptr = strstr(buf, "EndFragment");
+                sprintf(ptr+12, "%08u", strstr(buf, "<!--EndFrag") - buf);
+                *(ptr+12+8) = '\r';
+
+                // Now you have everything in place ready to put on the
+                // clipboard.
+
+                // Allocate global memory for transfer...
+                HGLOBAL hText = GlobalAlloc(GMEM_MOVEABLE |GMEM_DDESHARE, strlen(buf)+4);
+
+                // Put your string in the global memory...
+                ptr = (char *)GlobalLock(hText);
+                strcpy(ptr, buf);
+                GlobalUnlock(hText);
+
+                handle = ::SetClipboardData(cfid, hText);
+
+                // Free memory...
+                GlobalFree(hText);
+
+                // Clean up...
+                delete [] buf;
+                break;
+            }
+#endif
     }
 
     if ( handle == 0 )
     {
         wxLogSysError(_("Failed to set clipboard data."));
 
-        return FALSE;
+        return false;
     }
 
-    return TRUE;
+    return true;
 }
 
 void *wxGetClipboardData(wxDataFormat dataFormat, long *len)
@@ -296,6 +386,7 @@ void *wxGetClipboardData(wxDataFormat dataFormat, long *len)
 
     switch ( dataFormat )
     {
+#ifndef __WXWINCE__
         case wxDF_BITMAP:
             {
                 BITMAP bm;
@@ -337,21 +428,18 @@ void *wxGetClipboardData(wxDataFormat dataFormat, long *len)
                 wxBM->SetWidth(bm.bmWidth);
                 wxBM->SetHeight(bm.bmHeight);
                 wxBM->SetDepth(bm.bmPlanes);
-                wxBM->SetOk(TRUE);
                 retval = wxBM;
                 break;
             }
-
+#endif
         case wxDF_METAFILE:
         case CF_SYLK:
         case CF_DIF:
         case CF_TIFF:
         case CF_PALETTE:
         case wxDF_DIB:
-            {
-                wxLogError(_("Unsupported clipboard format."));
-                return FALSE;
-            }
+            wxLogError(_("Unsupported clipboard format."));
+            return NULL;
 
         case wxDF_OEMTEXT:
             dataFormat = wxDF_TEXT;
@@ -371,11 +459,11 @@ void *wxGetClipboardData(wxDataFormat dataFormat, long *len)
                 if (!s)
                     break;
 
-                LPSTR lpGlobalMemory = (LPSTR)::GlobalLock(hGlobalMemory);
+                LPSTR lpGlobalMemory = (LPSTR) GlobalLock(hGlobalMemory);
 
                 memcpy(s, lpGlobalMemory, hsize);
 
-                ::GlobalUnlock(hGlobalMemory);
+                GlobalUnlock(hGlobalMemory);
 
                 retval = s;
                 break;
@@ -395,11 +483,11 @@ void *wxGetClipboardData(wxDataFormat dataFormat, long *len)
                 if ( !buf )
                     break;
 
-                LPSTR lpGlobalMemory = (LPSTR)::GlobalLock(hGlobalMemory);
+                LPSTR lpGlobalMemory = (LPSTR) GlobalLock(hGlobalMemory);
 
                 memcpy(buf, lpGlobalMemory, size);
 
-                ::GlobalUnlock(hGlobalMemory);
+                GlobalUnlock(hGlobalMemory);
 
                 retval = buf;
                 break;
@@ -416,16 +504,16 @@ void *wxGetClipboardData(wxDataFormat dataFormat, long *len)
 
 wxDataFormat wxEnumClipboardFormats(wxDataFormat dataFormat)
 {
-  return ::EnumClipboardFormats(dataFormat);
+  return (wxDataFormat::NativeFormat)::EnumClipboardFormats(dataFormat);
 }
 
-int wxRegisterClipboardFormat(char *formatName)
+int wxRegisterClipboardFormat(wxChar *formatName)
 {
   return ::RegisterClipboardFormat(formatName);
 }
 
 bool wxGetClipboardFormatName(wxDataFormat dataFormat,
-                              char *formatName,
+                              wxChar *formatName,
                               int maxCount)
 {
   return ::GetClipboardFormatName((int)dataFormat, formatName, maxCount) > 0;
@@ -437,44 +525,148 @@ bool wxGetClipboardFormatName(wxDataFormat dataFormat,
 
 IMPLEMENT_DYNAMIC_CLASS(wxClipboard, wxObject)
 
-wxClipboard* wxTheClipboard = (wxClipboard *)NULL;
-
 wxClipboard::wxClipboard()
 {
+#if wxUSE_OLE_CLIPBOARD
+    wxOleInitialize();
+#endif
+
+    m_lastDataObject = NULL;
+    m_isOpened = false;
 }
 
 wxClipboard::~wxClipboard()
 {
-    Clear();
+    if ( m_lastDataObject )
+    {
+        Clear();
+    }
+
+#if wxUSE_OLE_CLIPBOARD
+    wxOleUninitialize();
+#endif
 }
 
 void wxClipboard::Clear()
 {
+    if ( IsUsingPrimarySelection() )
+        return;
+
+#if wxUSE_OLE_CLIPBOARD
+    if (m_lastDataObject)
+    {
+        // don't touch data set by other applications
+        HRESULT hr = OleIsCurrentClipboard(m_lastDataObject);
+        if (S_OK == hr)
+        {
+            hr = OleSetClipboard(NULL);
+            if ( FAILED(hr) )
+            {
+                wxLogApiError(wxT("OleSetClipboard(NULL)"), hr);
+            }
+        }
+        m_lastDataObject = NULL;
+    }
+#endif // wxUSE_OLE_CLIPBOARD
+}
+
+bool wxClipboard::Flush()
+{
+#if wxUSE_OLE_CLIPBOARD
+    if (m_lastDataObject)
+    {
+        // don't touch data set by other applications
+        HRESULT hr = OleIsCurrentClipboard(m_lastDataObject);
+        m_lastDataObject = NULL;
+        if (S_OK == hr)
+        {
+            hr = OleFlushClipboard();
+            if ( FAILED(hr) )
+            {
+                wxLogApiError(wxT("OleFlushClipboard"), hr);
+
+                return false;
+            }
+            return true;
+        }
+    }
+    return false;
+#else // !wxUSE_OLE_CLIPBOARD
+    return false;
+#endif // wxUSE_OLE_CLIPBOARD/!wxUSE_OLE_CLIPBOARD
 }
 
 bool wxClipboard::Open()
 {
+    // OLE opens clipboard for us
+    m_isOpened = true;
+#if wxUSE_OLE_CLIPBOARD
+    return true;
+#else
     return wxOpenClipboard();
+#endif
+}
+
+bool wxClipboard::IsOpened() const
+{
+#if wxUSE_OLE_CLIPBOARD
+    return m_isOpened;
+#else
+    return wxIsClipboardOpened();
+#endif
 }
 
 bool wxClipboard::SetData( wxDataObject *data )
 {
+    if ( IsUsingPrimarySelection() )
+        return false;
+
+#if !wxUSE_OLE_CLIPBOARD
     (void)wxEmptyClipboard();
+#endif // wxUSE_OLE_CLIPBOARD
 
     if ( data )
         return AddData(data);
     else
-        return TRUE;
+        return true;
 }
 
 bool wxClipboard::AddData( wxDataObject *data )
 {
-    wxCHECK_MSG( data, FALSE, "data is invalid" );
+    if ( IsUsingPrimarySelection() )
+        return false;
+
+    wxCHECK_MSG( data, false, wxT("data is invalid") );
+
+#if wxUSE_OLE_CLIPBOARD
+    HRESULT hr = OleSetClipboard(data->GetInterface());
+    if ( FAILED(hr) )
+    {
+        wxLogSysError(hr, _("Failed to put data on the clipboard"));
+
+        // don't free anything in this case
 
-#if wxUSE_DRAG_AND_DROP
-    wxCHECK_MSG( wxIsClipboardOpened(), FALSE, "clipboard not open" );
+        return false;
+    }
 
-    wxDataFormat format = data->GetFormat();
+    // we have to call either OleSetClipboard(NULL) or OleFlushClipboard() when
+    // using OLE clipboard when the app terminates - by default, we call
+    // OleSetClipboard(NULL) which won't waste RAM, but the app can call
+    // wxClipboard::Flush() to change this
+    m_lastDataObject = data->GetInterface();
+
+    // we have a problem here because we should delete wxDataObject, but we
+    // can't do it because IDataObject which we just gave to the clipboard
+    // would try to use it when it will need the data. IDataObject is ref
+    // counted and so doesn't suffer from such problem, so we release it now
+    // and tell it to delete wxDataObject when it is deleted itself.
+    data->SetAutoDelete();
+
+    return true;
+#elif wxUSE_DATAOBJ
+    wxCHECK_MSG( wxIsClipboardOpened(), false, wxT("clipboard not open") );
+
+    wxDataFormat format = data->GetPreferredFormat();
 
     switch ( format )
     {
@@ -491,132 +683,263 @@ bool wxClipboard::AddData( wxDataObject *data )
         {
             wxBitmapDataObject* bitmapDataObject = (wxBitmapDataObject*) data;
             wxBitmap bitmap(bitmapDataObject->GetBitmap());
-            return wxSetClipboardData(data->GetFormat(), &bitmap);
+            return wxSetClipboardData(data->GetPreferredFormat(), &bitmap);
         }
 
 #if wxUSE_METAFILE
         case wxDF_METAFILE:
         {
-            wxMetafileDataObject* metaFileDataObject = 
+#if 1
+            // TODO
+            wxLogError(wxT("Not implemented because wxMetafileDataObject does not contain width and height values."));
+            return false;
+#else
+            wxMetafileDataObject* metaFileDataObject =
                 (wxMetafileDataObject*) data;
             wxMetafile metaFile = metaFileDataObject->GetMetafile();
             return wxSetClipboardData(wxDF_METAFILE, &metaFile,
                                       metaFileDataObject->GetWidth(),
                                       metaFileDataObject->GetHeight());
+#endif
         }
 #endif // wxUSE_METAFILE
 
         default:
-            return wxSetClipboardData(data);
+        {
+// This didn't compile, of course
+//            return wxSetClipboardData(data);
+            // TODO
+            wxLogError(wxT("Not implemented."));
+            return false;
+        }
     }
-#else // !wxUSE_DRAG_AND_DROP
-    return FALSE;
-#endif // wxUSE_DRAG_AND_DROP/!wxUSE_DRAG_AND_DROP
+#else // !wxUSE_DATAOBJ
+    return false;
+#endif // wxUSE_DATAOBJ/!wxUSE_DATAOBJ
 }
 
 void wxClipboard::Close()
 {
+    m_isOpened = false;
+    // OLE closes clipboard for us
+#if !wxUSE_OLE_CLIPBOARD
     wxCloseClipboard();
+#endif
 }
 
-bool wxClipboard::IsSupported( wxDataFormat format )
+bool wxClipboard::IsSupported( const wxDataFormat& format )
 {
-    return wxIsClipboardFormatAvailable(format);
+    return !IsUsingPrimarySelection() && wxIsClipboardFormatAvailable(format);
 }
 
-bool wxClipboard::GetData( wxDataObject *data )
+bool wxClipboard::GetData( wxDataObject& data )
 {
-    wxCHECK_MSG( wxIsClipboardOpened(), FALSE, "clipboard not open" );
+    if ( IsUsingPrimarySelection() )
+        return false;
 
-#if wxUSE_DRAG_AND_DROP
-    wxDataFormat format = data->GetFormat();
-    switch ( format )
+#if wxUSE_OLE_CLIPBOARD
+    IDataObject *pDataObject = NULL;
+    HRESULT hr = OleGetClipboard(&pDataObject);
+    if ( FAILED(hr) || !pDataObject )
     {
-        case wxDF_TEXT:
-        case wxDF_OEMTEXT:
+        wxLogSysError(hr, _("Failed to get data from the clipboard"));
+
+        return false;
+    }
+
+    // build the list of supported formats
+    size_t nFormats = data.GetFormatCount(wxDataObject::Set);
+    wxDataFormat format;
+    wxDataFormat *formats;
+    if ( nFormats == 1 )
+    {
+        // the most common case
+        formats = &format;
+    }
+    else
+    {
+        // bad luck, need to alloc mem
+        formats = new wxDataFormat[nFormats];
+    }
+
+    data.GetAllFormats(formats, wxDataObject::Set);
+
+    // get the data for the given formats
+    FORMATETC formatEtc;
+    CLIPFORMAT cf;
+    bool result = false;
+
+    // enumerate all explicit formats on the clipboard.
+    // note that this does not include implicit / synthetic (automatically
+    // converted) formats.
+#if wxDEBUG_LEVEL >= 2
+    // get the format enumerator
+    IEnumFORMATETC *pEnumFormatEtc = NULL;
+    hr = pDataObject->EnumFormatEtc(DATADIR_GET, &pEnumFormatEtc);
+    if ( FAILED(hr) || !pEnumFormatEtc )
+    {
+        wxLogSysError(hr,
+                      _("Failed to retrieve the supported clipboard formats"));
+    }
+    else
+    {
+        // ask for the supported formats and see if there are any we support
+        for ( ;; )
         {
-            wxTextDataObject* textDataObject = (wxTextDataObject*) data;
-            char* s = (char*) wxGetClipboardData(format);
-            if ( s )
+            ULONG nCount;
+            hr = pEnumFormatEtc->Next(1, &formatEtc, &nCount);
+
+            // don't use FAILED() because S_FALSE would pass it
+            if ( hr != S_OK )
             {
-                textDataObject->SetText(s);
-                delete[] s;
-                return TRUE;
+                // no more formats
+                break;
             }
-            else
-                return FALSE;
+
+            cf = formatEtc.cfFormat;
+
+            wxLogTrace(wxTRACE_OleCalls,
+                       wxT("Object on the clipboard supports format %s."),
+                       wxDataObject::GetFormatName(cf));
         }
 
-        case wxDF_BITMAP:
-        case wxDF_DIB:
+        pEnumFormatEtc->Release();
+    }
+#endif // wxDEBUG_LEVEL >= 2
+
+    STGMEDIUM medium;
+    // stop at the first valid format found on the clipboard
+    for ( size_t n = 0; !result && (n < nFormats); n++ )
+    {
+        // convert to NativeFormat Id
+        cf = formats[n].GetFormatId();
+
+        // if the format is not available, try the next one
+        // this test includes implicit / sythetic formats
+        if ( !::IsClipboardFormatAvailable(cf) )
+            continue;
+
+        formatEtc.cfFormat = cf;
+        formatEtc.ptd      = NULL;
+        formatEtc.dwAspect = DVASPECT_CONTENT;
+        formatEtc.lindex   = -1;
+
+        // use the appropriate tymed
+        switch ( formatEtc.cfFormat )
         {
-            wxBitmapDataObject* bitmapDataObject = (wxBitmapDataObject *)data;
-            wxBitmap* bitmap = (wxBitmap *)wxGetClipboardData(data->GetFormat());
-            if (bitmap)
+            case CF_BITMAP:
+                formatEtc.tymed = TYMED_GDI;
+                break;
+
+#ifndef __WXWINCE__
+            case CF_METAFILEPICT:
+                formatEtc.tymed = TYMED_MFPICT;
+                break;
+
+            case CF_ENHMETAFILE:
+                formatEtc.tymed = TYMED_ENHMF;
+                break;
+#endif
+
+            default:
+                formatEtc.tymed = TYMED_HGLOBAL;
+        }
+
+        // try to get data
+        hr = pDataObject->GetData(&formatEtc, &medium);
+        if ( FAILED(hr) )
+        {
+            // try other tymed for GDI objects
+            if ( formatEtc.cfFormat == CF_BITMAP )
             {
-                bitmapDataObject->SetBitmap(* bitmap);
-                delete bitmap;
-                return TRUE;
+                formatEtc.tymed = TYMED_HGLOBAL;
+                hr = pDataObject->GetData(&formatEtc, &medium);
             }
-            else
-                return FALSE;
         }
-#if wxUSE_METAFILE
-        case wxDF_METAFILE:
+
+        if ( SUCCEEDED(hr) )
         {
-            wxMetafileDataObject* metaFileDataObject = (wxMetafileDataObject *)data;
-            wxMetafile* metaFile = (wxMetafile *)wxGetClipboardData(wxDF_METAFILE);
-            if (metaFile)
+            // pass the data to the data object
+            hr = data.GetInterface()->SetData(&formatEtc, &medium, true);
+            if ( FAILED(hr) )
             {
-                metaFileDataObject->SetMetafile(*metaFile);
-                delete metaFile;
-                return TRUE;
+                wxLogDebug(wxT("Failed to set data in wxIDataObject"));
+
+                // IDataObject only takes the ownership of data if it
+                // successfully got it - which is not the case here
+                ReleaseStgMedium(&medium);
             }
             else
-                return FALSE;
-        }
-#endif
-        default:
             {
-                long len;
-                void *buf = wxGetClipboardData(format, &len);
-                if ( buf )
-                {
-                    // FIXME this is for testing only!!
-                    ((wxPrivateDataObject *)data)->SetData(buf, len);
-                    free(buf);
-
-                    return TRUE;
-                }
+                result = true;
             }
+        }
+        //else: unsupported tymed?
+    }
 
-            return FALSE;
+    if ( formats != &format )
+    {
+        delete [] formats;
     }
-#else
-    return FALSE;
-#endif
-}
+    //else: we didn't allocate any memory
 
-//-----------------------------------------------------------------------------
-// wxClipboardModule
-//-----------------------------------------------------------------------------
+    // clean up and return
+    pDataObject->Release();
 
-IMPLEMENT_DYNAMIC_CLASS(wxClipboardModule,wxModule)
+    return result;
+#elif wxUSE_DATAOBJ
+    wxCHECK_MSG( wxIsClipboardOpened(), false, wxT("clipboard not open") );
 
-bool wxClipboardModule::OnInit()
-{
-    wxTheClipboard = new wxClipboard();
+    wxDataFormat format = data.GetPreferredFormat();
+    switch ( format )
+    {
+        case wxDF_TEXT:
+        case wxDF_OEMTEXT:
+        {
+            wxTextDataObject& textDataObject = (wxTextDataObject &)data;
+            char* s = (char*)wxGetClipboardData(format);
+            if ( !s )
+                return false;
 
-    return TRUE;
-}
+            textDataObject.SetText(wxString::FromAscii(s));
+            delete [] s;
 
-void wxClipboardModule::OnExit()
-{
-    if (wxTheClipboard) delete wxTheClipboard;
-    wxTheClipboard = (wxClipboard*) NULL;
+            return true;
+        }
+
+        case wxDF_BITMAP:
+        case wxDF_DIB:
+        {
+            wxBitmapDataObject& bitmapDataObject = (wxBitmapDataObject &)data;
+            wxBitmap* bitmap = (wxBitmap *)wxGetClipboardData(data.GetPreferredFormat());
+            if ( !bitmap )
+                return false;
+
+            bitmapDataObject.SetBitmap(*bitmap);
+            delete bitmap;
+
+            return true;
+        }
+#if wxUSE_METAFILE
+        case wxDF_METAFILE:
+        {
+            wxMetafileDataObject& metaFileDataObject = (wxMetafileDataObject &)data;
+            wxMetafile* metaFile = (wxMetafile *)wxGetClipboardData(wxDF_METAFILE);
+            if ( !metaFile )
+                return false;
+
+            metaFileDataObject.SetMetafile(*metaFile);
+            delete metaFile;
+
+            return true;
+        }
+#endif // wxUSE_METAFILE
+    }
+    return false;
+#else // !wxUSE_DATAOBJ
+    wxFAIL_MSG( wxT("no clipboard implementation") );
+    return false;
+#endif // wxUSE_OLE_CLIPBOARD/wxUSE_DATAOBJ
 }
 
-#else
-    #error "Please turn wxUSE_CLIPBOARD on to compile this file."
 #endif // wxUSE_CLIPBOARD
-