1 files changed, 7 insertions, 0 deletions
diff --git a/qtools/qxml.h b/qtools/qxml.h
index ce40e5f..2f7567d 100644
--- a/qtools/qxml.h
+++ b/qtools/qxml.h
@@ -213,6 +213,7 @@ private:
 class QM_EXPORT QXmlReader
 {
 public:
+    virtual ~QXmlReader() {}
     virtual bool feature( const QString& name, bool *ok = 0 ) const = 0;
     virtual void setFeature( const QString& name, bool value ) = 0;
     virtual bool hasFeature( const QString& name ) const = 0;
@@ -401,6 +402,7 @@ private:
 class QM_EXPORT QXmlContentHandler
 {
 public:
+    virtual ~QXmlContentHandler() {}
     virtual void setDocumentLocator( QXmlLocator* locator ) = 0;
     virtual bool startDocument() = 0;
     virtual bool endDocument() = 0;
@@ -418,6 +420,7 @@ public:
 class QM_EXPORT QXmlErrorHandler
 {
 public:
+    virtual ~QXmlErrorHandler() {}
     virtual bool warning( const QXmlParseException& exception ) = 0;
     virtual bool error( const QXmlParseException& exception ) = 0;
     virtual bool fatalError( const QXmlParseException& exception ) = 0;
@@ -427,6 +430,7 @@ public:
 class QM_EXPORT QXmlDTDHandler
 {
 public:
+    virtual ~QXmlDTDHandler() {}
     virtual bool notationDecl( const QString& name, const QString& publicId, const QString& systemId ) = 0;
     virtual bool unparsedEntityDecl( const QString& name, const QString& publicId, const QString& systemId, const QString& notationName ) = 0;
     virtual QString errorString() = 0;
@@ -435,6 +439,7 @@ public:
 class QM_EXPORT QXmlEntityResolver
 {
 public:
+    virtual ~QXmlEntityResolver() {}
     virtual bool resolveEntity( const QString& publicId, const QString& systemId, QXmlInputSource* ret ) = 0;
     virtual QString errorString() = 0;
 };
@@ -442,6 +447,7 @@ public:
 class QM_EXPORT QXmlLexicalHandler
 {
 public:
+    virtual ~QXmlLexicalHandler() {}
     virtual bool startDTD( const QString& name, const QString& publicId, const QString& systemId ) = 0;
     virtual bool endDTD() = 0;
 //    virtual bool startEntity( const QString& name ) = 0;
@@ -455,6 +461,7 @@ public:
 class QM_EXPORT QXmlDeclHandler
 {
 public:
+    virtual ~QXmlDeclHandler() {}
     virtual bool attributeDecl( const QString& eName, const QString& aName, const QString& type, const QString& valueDefault, const QString& value ) = 0;
     virtual bool internalEntityDecl( const QString& name, const QString& value ) = 0;
     virtual bool externalEntityDecl( const QString& name, const QString& publicId, const QString& systemId ) = 0;