diff --git a/xvaga/xvaga.cpp b/xvaga/xvaga.cpp
index f39705051..b972388b9 100755
--- a/xvaga/xvaga.cpp
+++ b/xvaga/xvaga.cpp
@@ -108,8 +108,7 @@ void TMessageBox::OnTimeout(wxTimerEvent& WXUNUSED(evt))
 
 void TMessageBox::AddButton(wxSizer* sz, int id, int WXUNUSED(ico))
 {
-  sz->Add(new wxButton(this, id, wxEmptyString, wxDefaultPosition, 
-                       wxSize(80, 32)), 0, wxALL, 4);
+  sz->Add(new wxButton(this, id, wxEmptyString, wxDefaultPosition, wxSize(80, 32)), 0, wxALL, 4);
 }
 
 TMessageBox::TMessageBox(wxWindow* pParent, const wxString& msg, int nStyle, int nTimeout)
@@ -122,10 +121,12 @@ TMessageBox::TMessageBox(wxWindow* pParent, const wxString& msg, int nStyle, int
   sizer->Add(sz1);
   
   wxArtID nIco = wxART_INFORMATION;
-  if (nStyle & wxICON_HAND)        nIco = wxART_ERROR;
-  if (nStyle & wxICON_INFORMATION) nIco = wxART_INFORMATION;
-  if (nStyle & wxICON_EXCLAMATION) nIco = wxART_WARNING;
-  if (nStyle & wxICON_QUESTION)    nIco = wxART_QUESTION;
+  if (nStyle & wxICON_HAND)        nIco = wxART_ERROR;       else
+  if (nStyle & wxICON_INFORMATION) nIco = wxART_INFORMATION; else
+  if (nStyle & wxICON_EXCLAMATION) nIco = wxART_WARNING;     else
+  if (nStyle & wxICON_QUESTION)    nIco = wxART_QUESTION;    else
+  if (nStyle & 0x1000)             nIco = "10204";
+  
   const wxBitmap img = wxArtProvider::GetBitmap(nIco, wxART_MESSAGE_BOX, wxSize(64,64));
     
   const int nBorder = 8;
@@ -133,9 +134,9 @@ TMessageBox::TMessageBox(wxWindow* pParent, const wxString& msg, int nStyle, int
   wxStaticText* ss = new wxStaticText(this, wxID_ANY, wxEmptyString);
   ss->Wrap(160);
   ss->SetLabel(msg);
-  sz1->Add(ss, 0, wxALL | wxALIGN_CENTER | wxALIGN_CENTER_VERTICAL, nBorder);
+  sz1->Add(ss, 0, wxALL|wxALIGN_CENTER|wxALIGN_CENTER_VERTICAL, nBorder);
   
-  sizer->Add(new wxStaticLine(this), 0, wxALL | wxEXPAND, nBorder);
+  sizer->Add(new wxStaticLine(this), 0, wxALL|wxEXPAND, nBorder);
 
   wxBoxSizer* sz2 = new wxBoxSizer(wxHORIZONTAL);
   sizer->Add(sz2, 0, wxALIGN_CENTER);
@@ -207,7 +208,7 @@ void _AssertBox(bool test, const char* func, const char* file, int line)
     	wxString strMessage;
       strMessage.Printf("Sorry, the application passed some invalid parameters to\nfunction %s in file %s at line %d .", 
                         func, file, line);
-      _MessageBox(strMessage, wxOK|wxICON_ERROR);
+      xvt_dm_post_error(strMessage);
 		}
 	}
 }
@@ -251,12 +252,12 @@ void TPopUpBox::OnTimer(wxTimerEvent& WXUNUSED(evt))
     if (msec <= 1000)
     {
       const int perc = msec/10;
-      Move(0, rctMain.GetBottom() - rctMine.height * perc / 100);
+      Move(rctMain.x, rctMain.GetBottom() - rctMine.height * perc / 100);
     }
     if (msec >= 3000 && msec <= 4000)
     {
       const int perc = (4000-msec)/10;
-      Move(0, rctMain.GetBottom() - rctMine.height * perc / 100);
+      Move(rctMain.x, rctMain.GetBottom() - rctMine.height * perc / 100);
     }
     if (msec > 4000)
       EndModal(wxID_CANCEL);
@@ -287,7 +288,7 @@ TPopUpBox::TPopUpBox(wxWindow* pParent, const wxString& msg, int nStyle)
   m_Timer.Start(25);
 }
 
-static void _PopUpBox(const wxString& msg, int nStyle)
+static void _PopUpBox(const wxString& msg, int nStyle, int nTimeout = 4)
 {
   const int oem = xvt_sys_get_oem_int("OEM", -1);
   if (oem == 0)
@@ -298,7 +299,7 @@ static void _PopUpBox(const wxString& msg, int nStyle)
     dlg.ShowModal();
   }
   else
-    _MessageBox(msg, nStyle|wxOK|wxCENTRE, 4);
+    _MessageBox(msg, nStyle|wxOK|wxCENTRE, nTimeout);
 }
 
 void xvt_sys_sorry_box(const char* func, const char* file, int line)
@@ -310,7 +311,7 @@ void xvt_sys_sorry_box(const char* func, const char* file, int line)
 		wxString strMessage;
     strMessage.Printf("Function %s in file %s at line %d\nis not implemented yet: be patient...", 
                       func, file, line);
-    _PopUpBox(strMessage, wxICON_ERROR);
+    _PopUpBox(strMessage, 0x1000); // Smiley Icon
 	}
 }
 
@@ -957,7 +958,8 @@ ASK_RESPONSE xvt_dm_post_ask(const char* Btn1, const char* Btn2, const char* Btn
 
 void xvt_dm_post_error(const char *fmt)
 {
-  _MessageBox(fmt, wxOK | wxCENTRE | wxICON_HAND);
+  //_MessageBox(fmt, wxOK | wxCENTRE | wxICON_HAND);
+  _PopUpBox(fmt, wxICON_HAND, 0);
 }
 
 void xvt_dm_post_fatal_exit(const char *fmt)
@@ -1051,12 +1053,14 @@ BOOLEAN xvt_dm_post_font_sel(WINDOW win, XVT_FNTID font_id, PRINT_RCD* WXUNUSED(
 
 void xvt_dm_post_message(const char *fmt)
 {
-  _MessageBox(fmt, wxOK | wxCENTRE | wxICON_INFORMATION);
+  //_MessageBox(fmt, wxOK | wxCENTRE | wxICON_INFORMATION);
+  _PopUpBox(fmt, wxICON_INFORMATION, 0);
 }
 
 void xvt_dm_post_note(const char *fmt)
 {
-  _MessageBox(fmt, wxOK | wxCENTRE | wxICON_EXCLAMATION);
+  //  _MessageBox(fmt, wxOK | wxCENTRE | wxICON_EXCLAMATION);
+  _PopUpBox(fmt, wxICON_EXCLAMATION, 0);
 }
 
 char* xvt_dm_post_string_prompt(const char* message, char* response, int response_len)
@@ -1075,7 +1079,8 @@ char* xvt_dm_post_string_prompt(const char* message, char* response, int respons
 
 void xvt_dm_post_warning(const char *fmt)
 {
-  _MessageBox(fmt, wxOK | wxCENTRE | wxICON_EXCLAMATION);
+  // _MessageBox(fmt, wxOK | wxCENTRE | wxICON_EXCLAMATION);
+  _PopUpBox(fmt, wxICON_EXCLAMATION, 0);
 }
 
 void xvt_dm_popup_error(const char *fmt)
@@ -1882,10 +1887,12 @@ void xvt_dwin_draw_line(WINDOW win, PNT pnt)
 {
 	CAST_TDC(win, tdc);
 	const wxPoint to(pnt.h, pnt.v);
-  wxDC& dc = tdc.GetDC();
 	if (tdc._pnt != to)
+  {
+    wxDC& dc = tdc.GetDC();
 	  dc.DrawLine(tdc._pnt, to);
-//  dc.DrawPoint(to);   // Un giorno capiro' il perche' servisse
+//  dc.DrawPoint(to);   // Non scommentare o cancellare: Un giorno capiro' il perche' servisse
+  }
 	tdc._pnt = to;
 }
 
@@ -1970,11 +1977,9 @@ void xvt_font_deserialize(XVT_FNTID font_id, const char* buf)
 
 void xvt_font_destroy(XVT_FNTID font_id)
 {
-  if (font_id != NULL)
-  {
-    TFontId* fp = wxStaticCast(font_id, TFontId);
+  TFontId* fp = wxDynamicCast(font_id, TFontId);
+  if (fp != NULL)
 	  delete fp;
-  }
 }
 
 BOOLEAN xvt_font_get_family(XVT_FNTID font_id, char* buf, long max_buf)
diff --git a/xvaga/xvtart.cpp b/xvaga/xvtart.cpp
index 8922a236d..9e4d9e25a 100755
--- a/xvaga/xvtart.cpp
+++ b/xvaga/xvtart.cpp
@@ -112,13 +112,14 @@ wxBitmap TArtProvider::CreateBitmap(const wxArtID& id, const wxArtClient& client
   long tool = -1;
   if (id.StartsWith(wxT("wxART")))
   {
-    if (id == wxART_ERROR)       tool = 201; else
-    if (id == wxART_HELP)        tool = 163; else
-    if (id == wxART_INFORMATION) tool = 162; else
-    if (id == wxART_NEW)         tool = 105; else
-    if (id == wxART_QUESTION)    tool = 202; else
-    if (id == wxART_QUIT)        tool = 114; else 
-    if (id == wxART_WARNING)     tool = 203; else
+    if (id == wxART_ERROR)         tool = 201; else
+    if (id == wxART_HELP)          tool = 163; else
+    if (id == wxART_INFORMATION)   tool = 162; else
+    if (id == wxART_MISSING_IMAGE) tool = 100; else
+    if (id == wxART_NEW)           tool = 105; else
+    if (id == wxART_QUESTION)      tool = 202; else
+    if (id == wxART_QUIT)          tool = 114; else 
+    if (id == wxART_WARNING)       tool = 203; else
     ;
   }
   else