Removed leaks from Forty demo

Added VC++ project file for artprov sample
Updated file lists


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@15004 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

samples/minimal/minimal.cpp

@@ -182,7 +182,7 @@ void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
 {
     wxString msg;
-    msg.Printf( _T("This is the about dialog of minimal sample.\n")
+    msg.Printf( _T("This is the About dialog of the minimal sample.\n")
                 _T("Welcome to %s"), wxVERSION_STRING);
 
     wxMessageBox(msg, _T("About Minimal"), wxOK | wxICON_INFORMATION, this);