fixed crash on startup under GTK

[wxWidgets.git] / src / msw / ole / dataobj.cpp

diff --git a/src/msw/ole/dataobj.cpp b/src/msw/ole/dataobj.cpp
index a909b3e85e49c11871194d7953f3611ea3bc116b..6a4ef3067093f861ca6eaf076866bf11a0d1e41d 100644 (file)
--- a/src/msw/ole/dataobj.cpp
+++ b/src/msw/ole/dataobj.cpp
@@ -6,7 +6,7 @@
 // Created:     10.05.98
 // RCS-ID:      $Id$
 // Copyright:   (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
 // Created:     10.05.98
 // RCS-ID:      $Id$
 // Copyright:   (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>

-// Licence:     wxWindows license
+// Licence:     wxWindows licence

 ///////////////////////////////////////////////////////////////////////////////
 
 // ============================================================================
 ///////////////////////////////////////////////////////////////////////////////
 
 // ============================================================================


@@ -17,7 +17,7 @@
 // headers
 // ----------------------------------------------------------------------------
 
 // headers
 // ----------------------------------------------------------------------------
 

-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)

     #pragma implementation "dataobj.h"
 #endif
 
     #pragma implementation "dataobj.h"
 #endif
 


@@ -39,26 +39,22 @@
 
 #include "wx/msw/private.h"         // includes <windows.h>
 
 
 #include "wx/msw/private.h"         // includes <windows.h>
 

-#if wxUSE_NORLANDER_HEADERS
-  #include <ole2.h>
+#ifdef __WXWINCE__
+#include <winreg.h>

 #endif
 #endif

-#include <oleauto.h>

 
 

-#ifndef __WIN32__
+// for some compilers, the entire ole2.h must be included, not only oleauto.h
+#if wxUSE_NORLANDER_HEADERS || defined(__WATCOMC__) || defined(__WXWINCE__)

   #include <ole2.h>
   #include <ole2.h>

-  #include <olestd.h>

 #endif
 
 #endif
 

+#include <oleauto.h>

 #include <shlobj.h>
 
 #include "wx/msw/ole/oleutils.h"
 
 #include "wx/msw/dib.h"
 
 #include <shlobj.h>
 
 #include "wx/msw/ole/oleutils.h"
 
 #include "wx/msw/dib.h"
 

-#ifdef __WXWINE__
-#define LPDROPFILES DROPFILES*
-#endif
-

 #ifndef CFSTR_SHELLURL
 #define CFSTR_SHELLURL _T("UniformResourceLocator")
 #endif
 #ifndef CFSTR_SHELLURL
 #define CFSTR_SHELLURL _T("UniformResourceLocator")
 #endif


@@ -70,7 +66,7 @@
 #ifdef __WXDEBUG__
     static const wxChar *GetTymedName(DWORD tymed);
 #else // !Debug
 #ifdef __WXDEBUG__
     static const wxChar *GetTymedName(DWORD tymed);
 #else // !Debug

-    #define GetTymedName(tymed) _T("")
+    #define GetTymedName(tymed) wxEmptyString

 #endif // Debug/!Debug
 
 // ----------------------------------------------------------------------------
 #endif // Debug/!Debug
 
 // ----------------------------------------------------------------------------


@@ -95,6 +91,8 @@ private:
     CLIPFORMAT *m_formats;  // formats we can provide data in
     ULONG       m_nCount,   // number of formats we support
                 m_nCurrent; // current enum position
     CLIPFORMAT *m_formats;  // formats we can provide data in
     ULONG       m_nCount,   // number of formats we support
                 m_nCurrent; // current enum position

+
+    DECLARE_NO_COPY_CLASS(wxIEnumFORMATETC)

 };
 
 // ----------------------------------------------------------------------------
 };
 
 // ----------------------------------------------------------------------------


@@ -129,6 +127,8 @@ private:
     wxDataObject *m_pDataObject;      // pointer to C++ class we belong to
 
     bool m_mustDelete;
     wxDataObject *m_pDataObject;      // pointer to C++ class we belong to
 
     bool m_mustDelete;

+
+    DECLARE_NO_COPY_CLASS(wxIDataObject)

 };
 
 // ============================================================================
 };
 
 // ============================================================================


@@ -157,8 +157,7 @@ wxString wxDataFormat::GetId() const
     wxCHECK_MSG( !IsStandard(), s,
                  wxT("name of predefined format cannot be retrieved") );
 
     wxCHECK_MSG( !IsStandard(), s,
                  wxT("name of predefined format cannot be retrieved") );
 

-    int len = ::GetClipboardFormatName(m_format, s.GetWriteBuf(max), max);
-    s.UngetWriteBuf();
+    int len = ::GetClipboardFormatName(m_format, wxStringBuffer(s, max), max);

 
     if ( !len )
     {
 
     if ( !len )
     {


@@ -191,31 +190,27 @@ wxIEnumFORMATETC::wxIEnumFORMATETC(const wxDataFormat *formats, ULONG nCount)
 
 STDMETHODIMP wxIEnumFORMATETC::Next(ULONG      celt,
                                     FORMATETC *rgelt,
 
 STDMETHODIMP wxIEnumFORMATETC::Next(ULONG      celt,
                                     FORMATETC *rgelt,

-                                    ULONG     *WXUNUSED(pceltFetched))
+                                    ULONG     *pceltFetched)

 {
     wxLogTrace(wxTRACE_OleCalls, wxT("wxIEnumFORMATETC::Next"));
 
 {
     wxLogTrace(wxTRACE_OleCalls, wxT("wxIEnumFORMATETC::Next"));
 

-    if ( celt > 1 ) {
-        // we only return 1 element at a time - mainly because I'm too lazy to
-        // implement something which you're never asked for anyhow
-        return S_FALSE;
-    }
-
-    if ( m_nCurrent < m_nCount ) {
+    ULONG numFetched = 0;
+    while (m_nCurrent < m_nCount && numFetched < celt) {

         FORMATETC format;
         format.cfFormat = m_formats[m_nCurrent++];
         format.ptd      = NULL;
         format.dwAspect = DVASPECT_CONTENT;
         format.lindex   = -1;
         format.tymed    = TYMED_HGLOBAL;
         FORMATETC format;
         format.cfFormat = m_formats[m_nCurrent++];
         format.ptd      = NULL;
         format.dwAspect = DVASPECT_CONTENT;
         format.lindex   = -1;
         format.tymed    = TYMED_HGLOBAL;

-        *rgelt = format;

 
 

-        return S_OK;
-    }
-    else {
-        // bad index
-        return S_FALSE;
+        *rgelt++ = format;
+        numFetched++;

     }
     }

+
+    if (pceltFetched)
+        *pceltFetched = numFetched;
+
+    return numFetched == celt ? S_OK : S_FALSE;

 }
 
 STDMETHODIMP wxIEnumFORMATETC::Skip(ULONG celt)
 }
 
 STDMETHODIMP wxIEnumFORMATETC::Skip(ULONG celt)


@@ -307,6 +302,7 @@ STDMETHODIMP wxIDataObject::GetData(FORMATETC *pformatetcIn, STGMEDIUM *pmedium)
             pmedium->tymed = TYMED_ENHMF;
             break;
 
             pmedium->tymed = TYMED_ENHMF;
             break;
 

+#ifndef __WXWINCE__

         case wxDF_METAFILE:
             pmedium->hGlobal = GlobalAlloc(GMEM_MOVEABLE | GMEM_SHARE,
                                            sizeof(METAFILEPICT));
         case wxDF_METAFILE:
             pmedium->hGlobal = GlobalAlloc(GMEM_MOVEABLE | GMEM_SHARE,
                                            sizeof(METAFILEPICT));


@@ -316,7 +312,7 @@ STDMETHODIMP wxIDataObject::GetData(FORMATETC *pformatetcIn, STGMEDIUM *pmedium)
             }
             pmedium->tymed = TYMED_MFPICT;
             break;
             }
             pmedium->tymed = TYMED_MFPICT;
             break;

-
+#endif

         default:
             // alloc memory
             size_t size = m_pDataObject->GetDataSize(format);
         default:
             // alloc memory
             size_t size = m_pDataObject->GetDataSize(format);


@@ -414,6 +410,7 @@ STDMETHODIMP wxIDataObject::GetDataHere(FORMATETC *pformatetc,
     return S_OK;
 }
 
     return S_OK;
 }
 

+

 // set data functions
 STDMETHODIMP wxIDataObject::SetData(FORMATETC *pformatetc,
                                     STGMEDIUM *pmedium,
 // set data functions
 STDMETHODIMP wxIDataObject::SetData(FORMATETC *pformatetc,
                                     STGMEDIUM *pmedium,


@@ -443,7 +440,7 @@ STDMETHODIMP wxIDataObject::SetData(FORMATETC *pformatetc,
                 // as we can't fix this bug in explorer (it's a bug because it
                 // should only use formats returned by EnumFormatEtc), do the
                 // check here
                 // as we can't fix this bug in explorer (it's a bug because it
                 // should only use formats returned by EnumFormatEtc), do the
                 // check here

-                if ( !m_pDataObject->IsSupportedFormat(format) ) {
+                if ( !m_pDataObject->IsSupported(format, wxDataObject::Set) ) {

                     // go away!
                     return DV_E_FORMATETC;
                 }
                     // go away!
                     return DV_E_FORMATETC;
                 }


@@ -474,16 +471,18 @@ STDMETHODIMP wxIDataObject::SetData(FORMATETC *pformatetc,
     || ( defined(__MWERKS__) && defined(__WXMSW__) )
                         size = std::wcslen((const wchar_t *)pBuf) * sizeof(wchar_t);
 #else
     || ( defined(__MWERKS__) && defined(__WXMSW__) )
                         size = std::wcslen((const wchar_t *)pBuf) * sizeof(wchar_t);
 #else

-                        size = ::wcslen((const wchar_t *)pBuf) * sizeof(wchar_t);
+                        size = wxWcslen((const wchar_t *)pBuf) * sizeof(wchar_t);

 #endif
                         break;
 #endif
                     case CF_BITMAP:
 #endif
                         break;
 #endif
                     case CF_BITMAP:

+#ifndef __WXWINCE__

                     case CF_HDROP:
                         // these formats don't use size at all, anyhow (but
                         // pass data by handle, which is always a single DWORD)
                         size = 0;
                         break;
                     case CF_HDROP:
                         // these formats don't use size at all, anyhow (but
                         // pass data by handle, which is always a single DWORD)
                         size = 0;
                         break;

+#endif

 
                     case CF_DIB:
                         // the handler will calculate size itself (it's too
 
                     case CF_DIB:
                         // the handler will calculate size itself (it's too


@@ -491,10 +490,11 @@ STDMETHODIMP wxIDataObject::SetData(FORMATETC *pformatetc,
                         size = 0;
                         break;
 
                         size = 0;
                         break;
 

+#ifndef __WXWINCE__

                     case CF_METAFILEPICT:
                         size = sizeof(METAFILEPICT);
                         break;
                     case CF_METAFILEPICT:
                         size = sizeof(METAFILEPICT);
                         break;

-
+#endif

                     default:
                         {
                             // we suppose that the size precedes the data
                     default:
                         {
                             // we suppose that the size precedes the data


@@ -761,27 +761,45 @@ const wxChar *wxDataObject::GetFormatName(wxDataFormat format)
 
 size_t wxBitmapDataObject::GetDataSize() const
 {
 
 size_t wxBitmapDataObject::GetDataSize() const
 {

-    return wxConvertBitmapToDIB(NULL, GetBitmap());
+#if wxUSE_WXDIB
+    return wxDIB::ConvertFromBitmap(NULL, GetHbitmapOf(GetBitmap()));
+#else
+    return 0;
+#endif

 }
 
 bool wxBitmapDataObject::GetDataHere(void *buf) const
 {
 }
 
 bool wxBitmapDataObject::GetDataHere(void *buf) const
 {

-    return wxConvertBitmapToDIB((LPBITMAPINFO)buf, GetBitmap()) != 0;
+#if wxUSE_WXDIB
+    BITMAPINFO * const pbi = (BITMAPINFO *)buf;
+
+    return wxDIB::ConvertFromBitmap(pbi, GetHbitmapOf(GetBitmap())) != 0;
+#else
+    return FALSE;
+#endif

 }
 
 bool wxBitmapDataObject::SetData(size_t WXUNUSED(len), const void *buf)
 {
 }
 
 bool wxBitmapDataObject::SetData(size_t WXUNUSED(len), const void *buf)
 {

-    wxBitmap bitmap(wxConvertDIBToBitmap((const LPBITMAPINFO)buf));
+#if wxUSE_WXDIB
+    const BITMAPINFO * const pbmi = (const BITMAPINFO *)buf;

 
 

-    if ( !bitmap.Ok() ) {
-        wxFAIL_MSG(wxT("pasting/dropping invalid bitmap"));
+    HBITMAP hbmp = wxDIB::ConvertToBitmap(pbmi);

 
 

-        return FALSE;
-    }
+    wxCHECK_MSG( hbmp, FALSE, wxT("pasting/dropping invalid bitmap") );
+
+    const BITMAPINFOHEADER * const pbmih = &pbmi->bmiHeader;
+    wxBitmap bitmap(pbmih->biWidth, pbmih->biHeight, pbmih->biBitCount);
+    bitmap.SetHBITMAP((WXHBITMAP)hbmp);
+
+    // TODO: create wxPalette if the bitmap has any

 
     SetBitmap(bitmap);
 
     return TRUE;
 
     SetBitmap(bitmap);
 
     return TRUE;

+#else
+    return FALSE;
+#endif

 }
 
 // ----------------------------------------------------------------------------
 }
 
 // ----------------------------------------------------------------------------


@@ -957,6 +975,7 @@ bool wxBitmapDataObject::SetData(const wxDataFormat& format,
 
 bool wxFileDataObject::SetData(size_t WXUNUSED(size), const void *pData)
 {
 
 bool wxFileDataObject::SetData(size_t WXUNUSED(size), const void *pData)
 {

+#ifndef __WXWINCE__

     m_filenames.Empty();
 
     // the documentation states that the first member of DROPFILES structure is
     m_filenames.Empty();
 
     // the documentation states that the first member of DROPFILES structure is


@@ -979,8 +998,7 @@ bool wxFileDataObject::SetData(size_t WXUNUSED(size), const void *pData)
         // +1 for terminating NUL
         len = ::DragQueryFile(hdrop, n, NULL, 0) + 1;
 
         // +1 for terminating NUL
         len = ::DragQueryFile(hdrop, n, NULL, 0) + 1;
 

-        UINT len2 = ::DragQueryFile(hdrop, n, str.GetWriteBuf(len), len);
-        str.UngetWriteBuf();
+        UINT len2 = ::DragQueryFile(hdrop, n, wxStringBuffer(str, len), len);

         m_filenames.Add(str);
 
         if ( len2 != len - 1 ) {
         m_filenames.Add(str);
 
         if ( len2 != len - 1 ) {


@@ -990,6 +1008,9 @@ bool wxFileDataObject::SetData(size_t WXUNUSED(size), const void *pData)
     }
 
     return TRUE;
     }
 
     return TRUE;

+#else
+    return FALSE;
+#endif

 }
 
 void wxFileDataObject::AddFile(const wxString& file)
 }
 
 void wxFileDataObject::AddFile(const wxString& file)


@@ -1002,6 +1023,7 @@ void wxFileDataObject::AddFile(const wxString& file)
 
 size_t wxFileDataObject::GetDataSize() const
 {
 
 size_t wxFileDataObject::GetDataSize() const
 {

+#ifndef __WXWINCE__

     // size returned will be the size of the DROPFILES structure,
     // plus the list of filesnames (null byte separated), plus
     // a double null at the end
     // size returned will be the size of the DROPFILES structure,
     // plus the list of filesnames (null byte separated), plus
     // a double null at the end


@@ -1021,10 +1043,14 @@ size_t wxFileDataObject::GetDataSize() const
     }
 
     return sz;
     }
 
     return sz;

+#else
+    return 0;
+#endif

 }
 
 bool wxFileDataObject::GetDataHere(void *pData) const
 {
 }
 
 bool wxFileDataObject::GetDataHere(void *pData) const
 {

+#ifndef __WXWINCE__

     // pData points to an externally allocated memory block
     // created using the size returned by GetDataSize()
 
     // pData points to an externally allocated memory block
     // created using the size returned by GetDataSize()
 


@@ -1061,6 +1087,9 @@ bool wxFileDataObject::GetDataHere(void *pData) const
     *pbuf = wxT('\0');
 
     return TRUE;
     *pbuf = wxT('\0');
 
     return TRUE;

+#else
+    return FALSE;
+#endif

 }
 
 // ----------------------------------------------------------------------------
 }
 
 // ----------------------------------------------------------------------------


@@ -1098,13 +1127,18 @@ protected:
         // CFSTR_SHELLURL is _always_ ANSI!
         wxCharBuffer char_buffer( GetDataSize() );
         wxCustomDataObject::GetDataHere( (void*)char_buffer.data() );
         // CFSTR_SHELLURL is _always_ ANSI!
         wxCharBuffer char_buffer( GetDataSize() );
         wxCustomDataObject::GetDataHere( (void*)char_buffer.data() );

-        wxString unicode_buffer( char_buffer );
+        wxString unicode_buffer( char_buffer, wxConvLibc );

         memcpy( buffer, unicode_buffer.c_str(),
                 ( unicode_buffer.length() + 1 ) * sizeof(wxChar) );
 
         return TRUE;
     }
         memcpy( buffer, unicode_buffer.c_str(),
                 ( unicode_buffer.length() + 1 ) * sizeof(wxChar) );
 
         return TRUE;
     }

+    virtual bool GetDataHere(const wxDataFormat& WXUNUSED(format),
+                             void *buf) const
+        { return GetDataHere(buf); }

 #endif
 #endif

+
+    DECLARE_NO_COPY_CLASS(CFSTR_SHELLURLDataObject)

 };
 
 
 };
 
 


@@ -1140,8 +1174,7 @@ wxString wxURLDataObject::GetURL() const
 
     size_t len = m_dataObjectLast->GetDataSize();
 
 
     size_t len = m_dataObjectLast->GetDataSize();
 

-    m_dataObjectLast->GetDataHere(url.GetWriteBuf(len));
-    url.UngetWriteBuf();
+    m_dataObjectLast->GetDataHere(wxStringBuffer(url, len));

 
     return url;
 }
 
     return url;
 }


@@ -1161,140 +1194,6 @@ void wxURLDataObject::SetURL(const wxString& url)
 // private functions
 // ----------------------------------------------------------------------------
 
 // private functions
 // ----------------------------------------------------------------------------
 

-static size_t wxGetNumOfBitmapColors(size_t bitsPerPixel)
-{
-    switch ( bitsPerPixel )
-    {
-        case 1:
-            // monochrome bitmap, 2 entries
-            return 2;
-
-        case 4:
-            return 16;
-
-        case 8:
-            return 256;
-
-        case 24:
-            // may be used with 24bit bitmaps, but we don't use it here - fall
-            // through
-
-        case 16:
-        case 32:
-            // bmiColors not used at all with these bitmaps
-            return 0;
-
-        default:
-            wxFAIL_MSG( wxT("unknown bitmap format") );
-            return 0;
-    }
-}
-
-size_t wxConvertBitmapToDIB(LPBITMAPINFO pbi, const wxBitmap& bitmap)
-{
-    wxASSERT_MSG( bitmap.Ok(), wxT("invalid bmp can't be converted to DIB") );
-
-    // shouldn't be selected into a DC or GetDIBits() would fail
-    wxASSERT_MSG( !bitmap.GetSelectedInto(),
-                  wxT("can't copy bitmap selected into wxMemoryDC") );
-
-    // prepare all the info we need
-    BITMAP bm;
-    HBITMAP hbmp = (HBITMAP)bitmap.GetHBITMAP();
-    if ( !GetObject(hbmp, sizeof(bm), &bm) )
-    {
-        wxLogLastError(wxT("GetObject(bitmap)"));
-
-        return 0;
-    }
-
-    // calculate the number of bits per pixel and the number of items in
-    // bmiColors array (whose meaning depends on the bitmap format)
-    WORD biBits = bm.bmPlanes * bm.bmBitsPixel;
-    WORD biColors = (WORD)wxGetNumOfBitmapColors(biBits);
-
-    BITMAPINFO bi2;
-
-    bool wantSizeOnly = pbi == NULL;
-    if ( wantSizeOnly )
-        pbi = &bi2;
-
-    // just for convenience
-    BITMAPINFOHEADER& bi = pbi->bmiHeader;
-
-    bi.biSize = sizeof(BITMAPINFOHEADER);
-    bi.biWidth = bm.bmWidth;
-    bi.biHeight = bm.bmHeight;
-    bi.biPlanes = 1;
-    bi.biBitCount = biBits;
-    bi.biCompression = BI_RGB;
-    bi.biSizeImage = 0;
-    bi.biXPelsPerMeter = 0;
-    bi.biYPelsPerMeter = 0;
-    bi.biClrUsed = 0;
-    bi.biClrImportant = 0;
-
-    // memory we need for BITMAPINFO only
-    DWORD dwLen = bi.biSize + biColors * sizeof(RGBQUAD);
-
-    // first get the image size
-    ScreenHDC hdc;
-    if ( !GetDIBits(hdc, hbmp, 0, bi.biHeight, NULL, pbi, DIB_RGB_COLORS) )
-    {
-        wxLogLastError(wxT("GetDIBits(NULL)"));
-
-        return 0;
-    }
-
-    if ( wantSizeOnly )
-    {
-        // size of the header + size of the image
-        return dwLen + bi.biSizeImage;
-    }
-
-    // and now copy the bits
-    void *image = (char *)pbi + dwLen;
-    if ( !GetDIBits(hdc, hbmp, 0, bi.biHeight, image, pbi, DIB_RGB_COLORS) )
-    {
-        wxLogLastError(wxT("GetDIBits"));
-
-        return 0;
-    }
-
-    return dwLen + bi.biSizeImage;
-}
-
-wxBitmap wxConvertDIBToBitmap(const LPBITMAPINFO pbmi)
-{
-    // here we get BITMAPINFO struct followed by the actual bitmap bits and
-    // BITMAPINFO starts with BITMAPINFOHEADER followed by colour info
-    const BITMAPINFOHEADER *pbmih = &pbmi->bmiHeader;
-
-    // biClrUsed has the number of colors, unless it's 0
-    int numColors = pbmih->biClrUsed;
-    if (numColors==0)
-    {
-        numColors = wxGetNumOfBitmapColors(pbmih->biBitCount);
-    }
-
-    // offset of image from the beginning of the header
-    DWORD ofs = numColors * sizeof(RGBQUAD);
-    void *image = (char *)pbmih + sizeof(BITMAPINFOHEADER) + ofs;
-
-    ScreenHDC hdc;
-    HBITMAP hbmp = CreateDIBitmap(hdc, pbmih, CBM_INIT,
-                                  image, pbmi, DIB_RGB_COLORS);
-    if ( !hbmp )
-    {
-        wxLogLastError(wxT("CreateDIBitmap"));
-    }
-
-    wxBitmap bitmap(pbmih->biWidth, pbmih->biHeight, pbmih->biBitCount);
-    bitmap.SetHBITMAP((WXHBITMAP)hbmp);
-
-    return bitmap;
-}
-

 #ifdef __WXDEBUG__
 
 static const wxChar *GetTymedName(DWORD tymed)
 #ifdef __WXDEBUG__
 
 static const wxChar *GetTymedName(DWORD tymed)