avoid flicker when setting the text which is the same as the current status bar pane...

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

diff --git a/src/msw/ole/dataobj.cpp b/src/msw/ole/dataobj.cpp
index ded312e08d9547c79bdf2a033abf4e60d20aa6d4..4cfcee5e9ebf813d1f8fca73f3df6d1d54cbc4c1 100644 (file)
--- a/src/msw/ole/dataobj.cpp
+++ b/src/msw/ole/dataobj.cpp
@@ -27,6 +27,7 @@
 #ifndef WX_PRECOMP
     #include "wx/intl.h"
     #include "wx/log.h"
+    #include "wx/utils.h"
 #endif
 
 #include "wx/dataobj.h"
@@ -158,6 +159,7 @@ wxString wxDataFormat::GetId() const
     if ( !len )
     {
         wxLogError(_("The clipboard format '%d' doesn't exist."), m_format);
+        return wxEmptyString;
     }
 
     return s;
@@ -686,8 +688,11 @@ size_t wxDataObject::GetBufferOffset(const wxDataFormat& format )
 const void* wxDataObject::GetSizeFromBuffer( const void* buffer, size_t* size,
                                                const wxDataFormat& format )
 {
-    SIZE_T realsz = ::HeapSize(::GetProcessHeap(), 0, buffer);
-    if ( realsz == (SIZE_T)-1 )
+    // hack: the third parameter is declared non-const in Wine's headers so
+    // cast away the const
+    size_t realsz = ::HeapSize(::GetProcessHeap(), 0,
+                               wx_const_cast(void*, buffer));
+    if ( realsz == (size_t)-1 )
     {
         // note that HeapSize() does not set last error
         wxLogApiError(wxT("HeapSize"), 0);
@@ -1044,22 +1049,44 @@ void wxFileDataObject::AddFile(const wxString& file)
 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
 
     // if no filenames in list, size is 0
-    if ( m_filenames.GetCount() == 0 )
+    if ( m_filenames.empty() )
         return 0;
 
+#if wxUSE_UNICODE_MSLU
+    size_t sizeOfChar;
+    if ( wxGetOsVersion() == wxOS_WINDOWS_9X )
+    {
+        // Win9x always uses ANSI file names and MSLU doesn't help with this
+        sizeOfChar = sizeof(char);
+    }
+    else
+    {
+        sizeOfChar = sizeof(wxChar);
+    }
+#else // !wxUSE_UNICODE_MSLU
+    static const size_t sizeOfChar = sizeof(wxChar);
+#endif // wxUSE_UNICODE_MSLU/!wxUSE_UNICODE_MSLU
+
     // inital size of DROPFILES struct + null byte
-    size_t sz = sizeof(DROPFILES) + (1 * sizeof(wxChar));
+    size_t sz = sizeof(DROPFILES) + sizeOfChar;
 
-    size_t count = m_filenames.GetCount();
+    const size_t count = m_filenames.size();
     for ( size_t i = 0; i < count; i++ )
     {
         // add filename length plus null byte
-        sz += (m_filenames[i].Len() + 1) * sizeof(wxChar);
+        size_t len;
+#if wxUSE_UNICODE_MSLU
+        if ( sizeOfChar == sizeof(char) )
+            len = strlen(wxConvFileName->cWC2MB(m_filenames[i]));
+        else
+#endif // wxUSE_UNICODE_MSLU
+            len = m_filenames[i].length();
+
+        sz += (len + 1) * sizeOfChar;
     }
 
     return sz;
@@ -1075,7 +1102,7 @@ bool wxFileDataObject::GetDataHere(void *WXUNUSED_IN_WINCE(pData)) const
     // created using the size returned by GetDataSize()
 
     // if pData is NULL, or there are no files, return
-    if ( !pData || m_filenames.GetCount() == 0 )
+    if ( !pData || m_filenames.empty() )
         return false;
 
     // convert data pointer to a DROPFILES struct pointer
@@ -1084,27 +1111,44 @@ bool wxFileDataObject::GetDataHere(void *WXUNUSED_IN_WINCE(pData)) const
     // initialize DROPFILES struct
     pDrop->pFiles = sizeof(DROPFILES);
     pDrop->fNC = FALSE;                 // not non-client coords
-#if wxUSE_UNICODE
-    pDrop->fWide = TRUE;
-#else // ANSI
-    pDrop->fWide = FALSE;
-#endif // Unicode/Ansi
+#if wxUSE_UNICODE_MSLU
+    pDrop->fWide = wxGetOsVersion() != wxOS_WINDOWS_9X ? TRUE : FALSE;
+#else
+    pDrop->fWide = wxUSE_UNICODE;
+#endif
+
+    const size_t sizeOfChar = pDrop->fWide ? sizeof(wchar_t) : sizeof(char);
 
     // set start of filenames list (null separated)
-    wxChar *pbuf = (wxChar*) ((BYTE *)pDrop + sizeof(DROPFILES));
+    BYTE *pbuf = (BYTE *)(pDrop + 1);
 
-    size_t count = m_filenames.GetCount();
-    for (size_t i = 0; i < count; i++ )
+    const size_t count = m_filenames.size();
+    for ( size_t i = 0; i < count; i++ )
     {
         // copy filename to pbuf and add null terminator
-        size_t len = m_filenames[i].Len();
-        memcpy(pbuf, m_filenames[i], len*sizeof(wxChar));
-        pbuf += len;
-        *pbuf++ = wxT('\0');
+        size_t len;
+#if wxUSE_UNICODE_MSLU
+        if ( sizeOfChar == sizeof(char) )
+        {
+            wxCharBuffer buf(wxConvFileName->cWC2MB(m_filenames[i]));
+            len = strlen(buf);
+            memcpy(pbuf, buf, len*sizeOfChar);
+        }
+        else
+#endif // wxUSE_UNICODE_MSLU
+        {
+            len = m_filenames[i].length();
+            memcpy(pbuf, m_filenames[i].c_str(), len*sizeOfChar);
+        }
+
+        pbuf += len*sizeOfChar;
+
+        memset(pbuf, 0, sizeOfChar);
+        pbuf += sizeOfChar;
     }
 
     // add final null terminator
-    *pbuf = wxT('\0');
+    memset(pbuf, 0, sizeOfChar);
 
     return true;
 #else
@@ -1116,6 +1160,12 @@ bool wxFileDataObject::GetDataHere(void *WXUNUSED_IN_WINCE(pData)) const
 // wxURLDataObject
 // ----------------------------------------------------------------------------
 
+// Work around bug in Wine headers
+#if defined(__WINE__) && defined(CFSTR_SHELLURL) && wxUSE_UNICODE
+#undef CFSTR_SHELLURL
+#define CFSTR_SHELLURL _T("CFSTR_SHELLURL")
+#endif
+
 class CFSTR_SHELLURLDataObject : public wxCustomDataObject
 {
 public:
@@ -1163,7 +1213,7 @@ public:
 
 
 
-wxURLDataObject::wxURLDataObject()
+wxURLDataObject::wxURLDataObject(const wxString& url)
 {
     // we support CF_TEXT and CFSTR_SHELLURL formats which are basicly the same
     // but it seems that some browsers only provide one of them so we have to
@@ -1173,6 +1223,9 @@ wxURLDataObject::wxURLDataObject()
 
     // we don't have any data yet
     m_dataObjectLast = NULL;
+
+    if ( !url.empty() )
+        SetURL(url);
 }
 
 bool wxURLDataObject::SetData(const wxDataFormat& format,