added missing virtual dtors to base classes (patch 1150945)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@32347 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/apptrait.h

@@ -54,6 +54,9 @@ class WXDLLIMPEXP_BASE wxStandardPathsBase;
 class WXDLLIMPEXP_BASE wxAppTraitsBase
 {
 public:
+    // needed since this class declares virtual members
+    virtual ~wxAppTraitsBase() { }
+
     // hooks for creating the global objects, may be overridden by the user
     // ------------------------------------------------------------------------
 

include/wx/caret.h

@@ -61,6 +61,9 @@ public:
         (void)Create(window, size);
     }
 
+    // a virtual dtor has been provided since this class has virtual members
+    virtual ~wxCaretBase() { }
+
     // Create() functions - same as ctor but returns the success code
     // --------------------------------------------------------------
 

include/wx/dir.h

@@ -54,6 +54,8 @@ enum wxDirTraverseResult
 class WXDLLIMPEXP_BASE wxDirTraverser
 {
 public:
+    /// a virtual dtor has been provided since this class has virtual members
+    virtual ~wxDirTraverser() { }
     // called for each file found by wxDir::Traverse()
     //
     // return wxDIR_STOP or wxDIR_CONTINUE from here (wxDIR_IGNORE doesn't

include/wx/geometry.h

@@ -785,6 +785,7 @@ inline bool wxRect2DInt::operator != (const wxRect2DInt& rect) const
 class wxTransform2D
 {
 public :
+    virtual ~wxTransform2D() { }
     virtual void                    Transform( wxPoint2DInt* pt )const  = 0;
     virtual void                    Transform( wxRect2DInt* r ) const;
     virtual wxPoint2DInt    Transform( const wxPoint2DInt &pt ) const;

include/wx/gsocket.h

@@ -100,6 +100,8 @@ typedef void (*GSocketCallback)(GSocket *socket, GSocketEvent event,
 class GSocketGUIFunctionsTable
 {
 public:
+    // needed since this class declares virtual members
+    virtual ~GSocketGUIFunctionsTable() { }
     virtual bool OnInit() = 0;
     virtual void OnExit() = 0;
     virtual bool CanUseEventLoop() = 0;

include/wx/html/htmlcell.h

@@ -104,6 +104,7 @@ private:
 class WXDLLIMPEXP_HTML wxHtmlRenderingStyle
 {
 public:
+    virtual ~wxHtmlRenderingStyle() {}
     virtual wxColour GetSelectedTextColour(const wxColour& clr) = 0;
     virtual wxColour GetSelectedTextBgColour(const wxColour& clr) = 0;
 };