diff --git a/dcop/client/dcop.cpp b/dcop/client/dcop.cpp
index a78c8e016..1d167ce70 100644
--- a/dcop/client/dcop.cpp
+++ b/dcop/client/dcop.cpp
@@ -410,11 +410,11 @@ TQStringList dcopSessionList( const TQString &user, const TQString &home )
     d.setFilter( TQDir::Files | TQDir::Hidden | TQDir::NoSymLinks );
     d.setNameFilter( ".DCOPserver*" );
 
-    const QFileInfoList *list = d.entryInfoList();
+    const TQFileInfoList *list = d.entryInfoList();
     if( !list )
 	return result;
 
-    QFileInfoListIterator it( *list );
+    TQFileInfoListIterator it( *list );
     TQFileInfo *fi;
 
     while ( ( fi = it.current() ) != 0 )
diff --git a/dcop/kdatastream.h b/dcop/kdatastream.h
index f8502aaab..de85ebb47 100644
--- a/dcop/kdatastream.h
+++ b/dcop/kdatastream.h
@@ -3,6 +3,7 @@
 
 #include <tqdatastream.h>
 
+#ifdef USE_QT3
 inline TQDataStream & operator << (TQDataStream & str, bool b)
 {
   str << Q_INT8(b);
@@ -16,6 +17,7 @@ inline TQDataStream & operator >> (TQDataStream & str, bool & b)
   b = bool(l);
   return str;
 }
+#endif // USE_QT3
 
 #if QT_VERSION < 0x030200 && !defined(Q_WS_WIN) && !defined(Q_WS_MAC)
 inline TQDataStream & operator << (TQDataStream & str, long long int ll)
diff --git a/kdecore/kdebug.h b/kdecore/kdebug.h
index 884545257..7d9dd5957 100644
--- a/kdecore/kdebug.h
+++ b/kdecore/kdebug.h
@@ -216,7 +216,7 @@ class KDECORE_EXPORT kdbgstream {
     kdbgstream &operator<<(const TQString& string) {
 	if (!print) return *this;
 	output += string;
-	if (output.at(output.length() -1 ) == '\n')
+	if (output.at(output.length() -1 ) == (QChar)'\n')
 	    flush();
 	return *this;
     }
@@ -228,7 +228,7 @@ class KDECORE_EXPORT kdbgstream {
     kdbgstream &operator<<(const char *string) {
 	if (!print) return *this;
 	output += TQString::fromUtf8(string);
-	if (output.at(output.length() - 1) == '\n')
+	if (output.at(output.length() - 1) == (QChar)'\n')
 	    flush();
 	return *this;
     }
diff --git a/kdecore/kurl.cpp b/kdecore/kurl.cpp
index 2d2082e7f..cb396c3a5 100644
--- a/kdecore/kurl.cpp
+++ b/kdecore/kurl.cpp
@@ -112,7 +112,7 @@ static TQString encode( const TQString& segment, int encoding_offset, int encodi
 
     }
     else
-      new_segment[ new_length++ ] = local[i];
+      new_segment[ new_length++ ] = (QChar)local[i];
   }
 
   TQString result = TQString(new_segment, new_length);
@@ -183,7 +183,7 @@ static TQString lazy_encode( const TQString& segment, bool encodeAt=true )
         (character == '?') || // Start of query delimiter
         ((character == '@') && encodeAt) || // Username delimiter
         (character == '#') || // Start of reference delimiter
-        ((character == 32) && (i+1 == old_length || segment[i+1] == ' '))) // A trailing space
+        ((character == 32) && (i+1 == old_length || segment[i+1] == (QChar)' '))) // A trailing space
     {
       new_segment[ new_length++ ] = '%';
 
@@ -657,7 +657,7 @@ void KURL::parse( const TQString& _url, int encoding_hint )
         goto NodeErr;
     if (alpha && buf[pos]==':' && (len==2 || (len>2 && (buf[pos+1]=='/' || buf[pos+1]=='\\'))))
 #else
-    if ( x == '/' )
+    if ( x == (QChar)'/' )
 #endif
     {
 	// A slash means we immediately proceed to parse it as a file URL.
@@ -673,9 +673,9 @@ void KURL::parse( const TQString& _url, int encoding_hint )
     // '.' is not currently accepted, because current KURL may be confused.
     // Proceed with :// :/ or :
     while( pos < len && (isalpha((int)buf[pos]) || isdigit((int)buf[pos]) ||
-			 buf[pos] == '+' || buf[pos] == '-')) pos++;
+			 buf[pos] == (QChar)'+' || buf[pos] == (QChar)'-')) pos++;
 
-    if (pos < len && buf[pos] == ':' )
+    if (pos < len && buf[pos] == (QChar)':' )
     {
 	m_strProtocol = TQString( orig, pos ).lower();
 	if ( m_iUriMode == Auto )
@@ -715,10 +715,10 @@ void KURL::parseRawURI( const TQString& _url, int encoding_hint )
     // '.' is not currently accepted, because current KURL may be confused.
     // Proceed with :
     while( pos < len && (isalpha((int)buf[pos]) || isdigit((int)buf[pos]) ||
-			 buf[pos] == '+' || buf[pos] == '-')) pos++;
+			 buf[pos] == (QChar)'+' || buf[pos] == (QChar)'-')) pos++;
 
     // Note that m_strProtocol is already set here, so we just skip over the protocol.
-    if (pos < len && buf[pos] == ':' )
+    if (pos < len && buf[pos] == (QChar)':' )
 	pos++;
     else { // can't happen, the caller checked all this already
 	reset();
@@ -776,9 +776,9 @@ void KURL::parseURL( const TQString& _url, int encoding_hint )
   const bool alpha = isalpha((int)x);
   if (alpha && len<2)
     goto NodeErr;
-  if (alpha && buf[pos]==':' && (len==2 || (len>2 && (buf[pos+1]=='/' || buf[pos+1]=='\\'))))
+  if (alpha && buf[pos]==(QChar)':' && (len==2 || (len>2 && (buf[pos+1]==(QChar)'/' || buf[pos+1]==(QChar)'\\'))))
 #else
-  if ( x == '/' )
+  if ( x == (QChar)'/' )
 #endif
     goto Node9;
   if ( !isalpha( (int)x ) )
@@ -788,14 +788,14 @@ void KURL::parseURL( const TQString& _url, int encoding_hint )
   // '.' is not currently accepted, because current KURL may be confused.
   // Proceed with :// :/ or :
   while( pos < len && (isalpha((int)buf[pos]) || isdigit((int)buf[pos]) ||
-          buf[pos] == '+' || buf[pos] == '-')) pos++;
+          buf[pos] == (QChar)'+' || buf[pos] == (QChar)'-')) pos++;
 
   // Note that m_strProtocol is already set here, so we just skip over the protocol.
-  if ( pos+2 < len && buf[pos] == ':' && buf[pos+1] == '/' && buf[pos+2] == '/' )
+  if ( pos+2 < len && buf[pos] == (QChar)':' && buf[pos+1] == (QChar)'/' && buf[pos+2] == (QChar)'/' )
     {
       pos += 3;
     }
-  else if (pos+1 < len && buf[pos] == ':' ) // Need to always compare length()-1 otherwise KURL passes "http:" as legal!!
+  else if (pos+1 < len && buf[pos] == (QChar)':' ) // Need to always compare length()-1 otherwise KURL passes "http:" as legal!!
     {
       pos++;
       start = pos;
@@ -810,13 +810,13 @@ void KURL::parseURL( const TQString& _url, int encoding_hint )
   start = pos;
 
   // Node 4: Accept any amount of characters.
-  if (buf[pos] == '[')     // An IPv6 host follows.
+  if (buf[pos] == (QChar)'[')     // An IPv6 host follows.
       goto Node8;
   // Terminate on / or @ or ? or # or " or ; or <
   x = buf[pos];
-  while( (x != ':') && (x != '@') && (x != '/') && (x != '?') && (x != '#') )
+  while( (x != (QChar)':') && (x != (QChar)'@') && (x != (QChar)'/') && (x != (QChar)'?') && (x != (QChar)'#') )
   {
-     if ((x == '\"') || (x == ';') || (x == '<'))
+     if ((x == (QChar)'\"') || (x == (QChar)';') || (x == (QChar)'<'))
         badHostName = true;
      if (++pos == len)
         break;
@@ -830,13 +830,13 @@ void KURL::parseURL( const TQString& _url, int encoding_hint )
       setHost(decode(TQString( buf + start, pos - start ), encoding_hint));
       goto NodeOk;
     }
-  if ( x == '@' )
+  if ( x == (QChar)'@' )
     {
       m_strUser = decode(TQString( buf + start, pos - start ), encoding_hint);
       pos++;
       goto Node7;
     }
-  else if ( (x == '/') || (x == '?') || (x == '#'))
+  else if ( (x == (QChar)'/') || (x == (QChar)'?') || (x == (QChar)'#'))
     {
       if (badHostName)
          goto NodeErr;
@@ -845,7 +845,7 @@ void KURL::parseURL( const TQString& _url, int encoding_hint )
       start = pos;
       goto Node9;
     }
-  else if ( x != ':' )
+  else if ( x != (QChar)':' )
     goto NodeErr;
   m_strUser = decode(TQString( buf + start, pos - start ), encoding_hint);
   pos++;
@@ -857,13 +857,13 @@ void KURL::parseURL( const TQString& _url, int encoding_hint )
 
   // Node 6: Read everything until @, /, ? or #
   while( (pos < len) &&
-		(buf[pos] != '@') &&
-		(buf[pos] != '/') &&
-		(buf[pos] != '?') &&
-		(buf[pos] != '#')) pos++;
+		(buf[pos] != (QChar)'@') &&
+		(buf[pos] != (QChar)'/') &&
+		(buf[pos] != (QChar)'?') &&
+		(buf[pos] != (QChar)'#')) pos++;
   // If we now have a '@' the ':' seperates user and password.
   // Otherwise it seperates host and port.
-  if ( (pos == len) || (buf[pos] != '@') )
+  if ( (pos == len) || (buf[pos] != (QChar)'@') )
     {
       // Ok the : was used to separate host and port
       if (badHostName)
@@ -877,10 +877,10 @@ void KURL::parseURL( const TQString& _url, int encoding_hint )
         goto NodeOk;
       // there is more after the digits
       pos -= strlen(endptr);
-      if ((buf[pos] != '@') &&
-          (buf[pos] != '/') &&
-          (buf[pos] != '?') &&
-          (buf[pos] != '#'))
+      if ((buf[pos] != (QChar)'@') &&
+          (buf[pos] != (QChar)'/') &&
+          (buf[pos] != (QChar)'?') &&
+          (buf[pos] != (QChar)'#'))
         goto NodeErr;
 
       start = pos;
@@ -895,7 +895,7 @@ void KURL::parseURL( const TQString& _url, int encoding_hint )
     goto NodeErr;
 
  Node8:
-  if (buf[pos] == '[')
+  if (buf[pos] == (QChar)'[')
   {
     // IPv6 address
     start = ++pos; // Skip '['
@@ -908,9 +908,9 @@ void KURL::parseURL( const TQString& _url, int encoding_hint )
     // Node 8a: Read everything until ] or terminate
     badHostName = false;
     x = buf[pos];
-    while( (x != ']') )
+    while( (x != (QChar)']') )
     {
-       if ((x == '\"') || (x == ';') || (x == '<'))
+       if ((x == (QChar)'\"') || (x == (QChar)';') || (x == (QChar)'<'))
           badHostName = true;
        if (++pos == len)
        {
@@ -934,9 +934,9 @@ void KURL::parseURL( const TQString& _url, int encoding_hint )
     // Node 8b: Read everything until / : or terminate
     badHostName = false;
     x = buf[pos];
-    while( (x != ':') && (x != '@') && (x != '/') && (x != '?') && (x != '#') )
+    while( (x != (QChar)':') && (x != (QChar)'@') && (x != (QChar)'/') && (x != (QChar)'?') && (x != (QChar)'#') )
     {
-       if ((x == '\"') || (x == ';') || (x == '<'))
+       if ((x == (QChar)'\"') || (x == (QChar)';') || (x == (QChar)'<'))
           badHostName = true;
        if (++pos == len)
           break;
@@ -952,12 +952,12 @@ void KURL::parseURL( const TQString& _url, int encoding_hint )
     setHost(decode(TQString( buf + start, pos - start ), encoding_hint));
   }
   x = buf[pos];
-  if ( x == '/' || x == '#' || x == '?' )
+  if ( x == (QChar)'/' || x == (QChar)'#' || x == (QChar)'?' )
     {
       start = pos;
       goto Node9;
     }
-  else if ( x != ':' )
+  else if ( x != (QChar)':' )
     goto NodeErr;
   pos++;
 
@@ -978,7 +978,7 @@ void KURL::parseURL( const TQString& _url, int encoding_hint )
 
  Node9: // parse path until query or reference reached
 
-  while( pos < len && buf[pos] != '#' && buf[pos]!='?' ) pos++;
+  while( pos < len && buf[pos] != (QChar)'#' && buf[pos]!=(QChar)'?' ) pos++;
 
   tmp = TQString( buf + start, pos - start );
   //kdDebug(126)<<" setting encoded path to:"<<tmp<<endl;
@@ -988,14 +988,14 @@ void KURL::parseURL( const TQString& _url, int encoding_hint )
       goto NodeOk;
 
  //Node10: // parse query or reference depending on what comes first
-  delim = (buf[pos++]=='#'?'?':'#');
+  delim = (buf[pos++]==(QChar)'#'?(QChar)'?':(QChar)'#');
 
   start = pos;
 
   while(pos < len && buf[pos]!=delim ) pos++;
 
   tmp = TQString(buf + start, pos - start);
-  if (delim=='#')
+  if (delim==(QChar)'#')
       _setQuery(tmp, encoding_hint);
   else
       m_strRef_encoded = tmp;
@@ -1005,7 +1005,7 @@ void KURL::parseURL( const TQString& _url, int encoding_hint )
 
  //Node11: // feed the rest into the remaining variable
   tmp = TQString( buf + pos + 1, len - pos - 1);
-  if (delim == '#')
+  if (delim == (QChar)'#')
       m_strRef_encoded = tmp;
   else
       _setQuery(tmp, encoding_hint);
@@ -1219,7 +1219,7 @@ void KURL::setFileName( const TQString& _txt )
 {
   m_strRef_encoded = TQString::null;
   int i = 0;
-  while( _txt[i] == '/' ) ++i;
+  while( _txt[i] == (QChar)'/' ) ++i;
   TQString tmp;
   if ( i )
     tmp = _txt.mid( i );
@@ -1271,7 +1271,7 @@ static TQString trailingSlash( int _trailing, const TQString &path )
   else if ( _trailing == 1 )
   {
     int len = result.length();
-    if ( (len == 0) || (result[ len - 1 ] != '/') )
+    if ( (len == 0) || (result[ len - 1 ] != (QChar)'/') )
       result += "/";
     return result;
   }
@@ -1280,7 +1280,7 @@ static TQString trailingSlash( int _trailing, const TQString &path )
     if ( result == "/" )
       return result;
     int len = result.length();
-    while (len > 1 && result[ len - 1 ] == '/')
+    while (len > 1 && result[ len - 1 ] == (QChar)'/')
     {
       len--;
     }
@@ -1687,14 +1687,14 @@ TQString KURL::fileName( bool _strip_trailing_slash ) const
 
   if ( _strip_trailing_slash )
   {
-    while ( len >= 1 && path[ len - 1 ] == '/' )
+    while ( len >= 1 && path[ len - 1 ] == (QChar)'/' )
       len--;
   }
-  else if ( path[ len - 1 ] == '/' )
+  else if ( path[ len - 1 ] == (QChar)'/' )
     return fname;
 
   // Does the path only consist of '/' characters ?
-  if ( len == 1 && path[ 0 ] == '/' )
+  if ( len == 1 && path[ 0 ] == (QChar)'/' )
     return fname;
 
   // Skip last n slashes
@@ -1704,13 +1704,13 @@ TQString KURL::fileName( bool _strip_trailing_slash ) const
      // This is hairy, we need the last unencoded slash.
      // Count in the encoded string how many encoded slashes follow the last
      // unencoded one.
-     int i = m_strPath_encoded.findRev( '/', len - 1 );
+     int i = m_strPath_encoded.findRev( (QChar)'/', len - 1 );
      TQString fileName_encoded = m_strPath_encoded.mid(i+1);
      n += fileName_encoded.contains("%2f", false);
   }
   int i = len;
   do {
-    i = path.findRev( '/', i - 1 );
+    i = path.findRev( (QChar)'/', i - 1 );
   }
   while (--n && (i > 0));
 
@@ -1749,14 +1749,14 @@ void KURL::addPath( const TQString& _txt )
   int i = 0;
   int len = m_strPath.length();
   // Add the trailing '/' if it is missing
-  if ( _txt[0] != '/' && ( len == 0 || m_strPath[ len - 1 ] != '/' ) )
+  if ( _txt[0] != (QChar)'/' && ( len == 0 || m_strPath[ len - 1 ] != (QChar)'/' ) )
     m_strPath += "/";
 
   // No double '/' characters
   i = 0;
-  if ( len != 0 && m_strPath[ len - 1 ] == '/' )
+  if ( len != 0 && m_strPath[ len - 1 ] == (QChar)'/' )
   {
-    while( _txt[i] == '/' )
+    while( _txt[i] == (QChar)'/' )
       ++i;
   }
 
@@ -1812,7 +1812,7 @@ bool KURL::cd( const TQString& _dir )
   }
 
   // absolute path ?
-  if ( _dir[0] == '/' )
+  if ( _dir[0] == (QChar)'/' )
   {
     m_strPath_encoded = TQString::null;
     m_strPath = _dir;
@@ -1822,7 +1822,7 @@ bool KURL::cd( const TQString& _dir )
   }
 
   // Users home directory on the local disk ?
-  if ( ( _dir[0] == '~' ) && ( m_strProtocol == fileProt ))
+  if ( ( _dir[0] == (QChar)'~' ) && ( m_strProtocol == fileProt ))
   {
     m_strPath_encoded = TQString::null;
     m_strPath = TQDir::homeDirPath();
@@ -2011,7 +2011,7 @@ void KURL::setDirectory( const TQString &dir)
 
 void KURL::setQuery( const TQString &_txt, int encoding_hint)
 {
-   if (_txt[0] == '?')
+   if (_txt[0] == (QChar)'?')
       _setQuery( _txt.length() > 1 ? _txt.mid(1) : "" /*empty, not null*/, encoding_hint );
    else
       _setQuery( _txt, encoding_hint );
@@ -2249,7 +2249,7 @@ KURL KURL::fromPathOrURL( const TQString& text )
 static TQString _relativePath(const TQString &base_dir, const TQString &path, bool &isParent)
 {
    TQString _base_dir(TQDir::cleanDirPath(base_dir));
-   TQString _path(TQDir::cleanDirPath(path.isEmpty() || (path[0] != '/') ? _base_dir+"/"+path : path));
+   TQString _path(TQDir::cleanDirPath(path.isEmpty() || (path[0] != (QChar)'/') ? _base_dir+"/"+path : path));
 
    if (_base_dir.isEmpty())
       return _path;
@@ -2274,7 +2274,7 @@ static TQString _relativePath(const TQString &base_dir, const TQString &path, bo
    for(uint i = level; i < list2.count(); i++)
       result.append(list2[i]).append("/");
 
-   if ((level < list2.count()) && (path[path.length()-1] != '/'))
+   if ((level < list2.count()) && (path[path.length()-1] != (QChar)'/'))
       result.truncate(result.length()-1);
 
    isParent = (level == list1.count());
diff --git a/kdecore/network/kbufferedsocket.cpp b/kdecore/network/kbufferedsocket.cpp
index 52d826c88..04115c051 100644
--- a/kdecore/network/kbufferedsocket.cpp
+++ b/kdecore/network/kbufferedsocket.cpp
@@ -93,7 +93,12 @@ void KBufferedSocket::close()
     }
 }
 
+#ifdef USE_QT3
 Q_LONG KBufferedSocket::bytesAvailable() const
+#endif
+#ifdef USE_QT4
+qint64 KBufferedSocket::bytesAvailable() const
+#endif
 {
   if (!d->input)
     return KStreamSocket::bytesAvailable();
@@ -279,7 +284,12 @@ KIOBufferBase* KBufferedSocket::outputBuffer()
   return d->output;
 }
 
+#ifdef USE_QT3
 Q_ULONG KBufferedSocket::bytesToWrite() const
+#endif
+#ifdef USE_QT4
+qint64 KBufferedSocket::bytesToWrite() const
+#endif
 {
   if (!d->output)
     return 0;
diff --git a/kdecore/network/kbufferedsocket.h b/kdecore/network/kbufferedsocket.h
index d99862781..bca034002 100644
--- a/kdecore/network/kbufferedsocket.h
+++ b/kdecore/network/kbufferedsocket.h
@@ -98,7 +98,12 @@ public:
   /**
    * Make use of the buffers.
    */
+#ifdef USE_QT3
   virtual Q_LONG bytesAvailable() const;
+#endif
+#ifdef USE_QT4
+  virtual qint64 bytesAvailable() const;
+#endif
 
   /**
    * Make use of buffers.
@@ -177,7 +182,12 @@ public:
   /**
    * Returns the length of the output buffer.
    */
+#ifdef USE_QT3
   virtual Q_ULONG bytesToWrite() const;
+#endif
+#ifdef USE_QT4
+  virtual qint64 bytesToWrite() const;
+#endif
 
   /**
    * Closes the socket and discards any output data that had been buffered
@@ -244,7 +254,12 @@ public:
    * which required a call to reset() in order to be able to connect again
    * using the same device. This is not necessary in KBufferedSocket any more.
    */
+#ifdef USE_QT3
   inline void reset()
+#endif
+#ifdef USE_QT4
+  inline bool reset()
+#endif
   { closeNow(); }
 };
 
diff --git a/kdecore/network/kclientsocketbase.cpp b/kdecore/network/kclientsocketbase.cpp
index 2da802d56..7ac3ca3b1 100644
--- a/kdecore/network/kclientsocketbase.cpp
+++ b/kdecore/network/kclientsocketbase.cpp
@@ -278,7 +278,12 @@ void KClientSocketBase::close()
 }
 
 // This function is unlike all the others because it is const
+#ifdef USE_QT3
 Q_LONG KClientSocketBase::bytesAvailable() const
+#endif
+#ifdef USE_QT4
+qint64 KClientSocketBase::bytesAvailable() const
+#endif
 {
   return socketDevice()->bytesAvailable();
 }
diff --git a/kdecore/network/kclientsocketbase.h b/kdecore/network/kclientsocketbase.h
index 1a6d3b8b1..d4e31b6b3 100644
--- a/kdecore/network/kclientsocketbase.h
+++ b/kdecore/network/kclientsocketbase.h
@@ -292,7 +292,12 @@ public:
    * Returns the number of bytes available on this socket.
    * Reimplemented from KSocketBase.
    */
+#ifdef USE_QT3
   virtual Q_LONG bytesAvailable() const;
+#endif
+#ifdef USE_QT4
+  virtual qint64 bytesAvailable() const;
+#endif
 
   /**
    * Waits for more data. Reimplemented from KSocketBase.
diff --git a/kdecore/network/kresolver.cpp b/kdecore/network/kresolver.cpp
index 598b6de55..cfb87e3ef 100644
--- a/kdecore/network/kresolver.cpp
+++ b/kdecore/network/kresolver.cpp
@@ -72,7 +72,7 @@ using namespace KNetwork::Internal;
 /////////////////////////////////////////////
 // class KResolverEntry
 
-class KNetwork::KResolverEntryPrivate: public QShared
+class KNetwork::KResolverEntryPrivate: public TQShared
 {
 public:
   KSocketAddress addr;
diff --git a/kdecore/network/ksocketbase.h b/kdecore/network/ksocketbase.h
index 5ef298847..133086114 100644
--- a/kdecore/network/ksocketbase.h
+++ b/kdecore/network/ksocketbase.h
@@ -532,7 +532,12 @@ public:
    * Returns the number of bytes available for reading without
    * blocking.
    */
+#ifdef USE_QT3
   virtual Q_LONG bytesAvailable() const = 0;
+#endif
+#ifdef USE_QT4
+  virtual qint64 bytesAvailable() const = 0;
+#endif
 
   /**
    * Waits up to @p msecs for more data to be available on this socket.
diff --git a/kdecore/network/ksocketdevice.cpp b/kdecore/network/ksocketdevice.cpp
index 2885efdb3..53a16ca0a 100644
--- a/kdecore/network/ksocketdevice.cpp
+++ b/kdecore/network/ksocketdevice.cpp
@@ -364,7 +364,12 @@ bool KSocketDevice::disconnect()
   return true;			// all is well
 }
 
+#ifdef USE_QT3
 Q_LONG KSocketDevice::bytesAvailable() const
+#endif
+#ifdef USE_QT4
+qint64 KSocketDevice::bytesAvailable() const
+#endif
 {
   if (m_sockfd == -1)
     return -1;			// there's nothing to read in a closed socket
diff --git a/kdecore/network/ksocketdevice.h b/kdecore/network/ksocketdevice.h
index 1bf4771c2..5f86687b2 100644
--- a/kdecore/network/ksocketdevice.h
+++ b/kdecore/network/ksocketdevice.h
@@ -198,7 +198,12 @@ public:
   /**
    * Returns the number of bytes available for reading without blocking.
    */
+#ifdef USE_QT3
   virtual Q_LONG bytesAvailable() const;
+#endif
+#ifdef USE_QT4
+  virtual qint64 bytesAvailable() const;
+#endif
 
   /**
    * Waits up to @p msecs for more data to be available on this socket.
diff --git a/kdecore/svgicons/ksvgiconengine.cpp b/kdecore/svgicons/ksvgiconengine.cpp
index 18d52bee7..dd54e99be 100644
--- a/kdecore/svgicons/ksvgiconengine.cpp
+++ b/kdecore/svgicons/ksvgiconengine.cpp
@@ -441,7 +441,7 @@ public:
 			{
 				// Scale, if needed
 				if(image.width() != (int) w || image.height() != (int) h)
-					image = image.smoothScale((int) w, (int) h, TQImage::ScaleFree);
+					image = image.smoothScale((int) w, (int) h, TQImage_ScaleFree);
 
 				m_engine->painter()->drawImage(x, y, image);
 			}
diff --git a/kdefx/kstyle.cpp b/kdefx/kstyle.cpp
index d22a6d795..a533e2803 100644
--- a/kdefx/kstyle.cpp
+++ b/kdefx/kstyle.cpp
@@ -516,6 +516,25 @@ int KStyle::kPixelMetric( KStylePixelMetric kpm, const TQWidget* /* widget */) c
 	return value;
 }
 
+// -----------------------------------------------------------------------------
+
+#ifdef USE_QT4
+
+void KStyle::drawPrimitive( ControlElement pe,
+							TQPainter* p,
+							const TQRect &r,
+							const TQColorGroup &cg,
+							SFlags flags,
+							const TQStyleOption& opt ) const
+{
+	// FIXME:
+	// What should "widget" be in actuality?  How should I get it?  From where?
+	// Almost certainly it should not be null!
+	TQWidget *widget = 0;
+	drawControl(pe, p, widget, r, cg, flags, opt);
+}
+
+#endif // USE_QT4
 
 // -----------------------------------------------------------------------------
 
@@ -999,7 +1018,7 @@ int KStyle::pixelMetric(PixelMetric m, const TQWidget* widget) const
 		case PM_SliderControlThickness: {
 			const TQSlider* slider   = (const TQSlider*)widget;
 			TQSlider::TickSetting ts = slider->tickmarks();
-			int thickness = (slider->orientation() == Horizontal) ?
+			int thickness = (slider->orientation() == TQ_Horizontal) ?
 							 slider->height() : slider->width();
 			switch (ts) {
 				case TQSlider::NoMarks:				// Use total area.
diff --git a/kdefx/kstyle.h b/kdefx/kstyle.h
index 87b5d299e..f9a47ec45 100644
--- a/kdefx/kstyle.h
+++ b/kdefx/kstyle.h
@@ -281,6 +281,17 @@ class KDEFX_EXPORT KStyle: public QCommonStyle
 					SFlags flags = Style_Default,
 					const TQStyleOption& = TQStyleOption::TQSO_Default ) const;
 
+#ifdef USE_QT4
+
+		void drawPrimitive( ControlElement pe,
+					TQPainter* p,
+					const TQRect &r,
+					const TQColorGroup &cg,
+					SFlags flags = Style_Default,
+					const TQStyleOption& = TQStyleOption::TQSO_Default ) const;
+
+#endif // USE_QT4
+
 		void drawControl( ControlElement element,
 					TQPainter* p,
 					const TQWidget* widget,