+ // Since Windows Vista the association used by Explorer is different from
+ // the association information stored in the traditional part of the
+ // registry. Unfortunately the new schema doesn't seem to be documented
+ // anywhere so using it involves a bit of guesswork:
+ //
+ // The information is stored under Explorer-specific key whose path is
+ // below. The interesting part is UserChoice subkey which is the only one
+ // we use so far but there is also OpenWithProgids subkey which can exist
+ // even if UserChoice doesn't. However in practice there doesn't seem to be
+ // any cases when OpenWithProgids values for the given extension are
+ // different from those found directly under HKCR\.ext, so for now we don't
+ // bother to use this, apparently the programs registering their file type
+ // associations do it in both places. We do use UserChoice because when the
+ // association is manually changed by the user it's only recorded there and
+ // so must override whatever value was created under HKCR by the setup
+ // program.
+
+ {
+ wxRegKey explorerKey
+ (
+ wxRegKey::HKCU,
+ wxT("Software\\Microsoft\\Windows\\CurrentVersion\\")
+ wxT("Explorer\\FileExts\\") +
+ m_ext +
+ wxT("\\UserChoice")
+ );
+ if ( explorerKey.Open(wxRegKey::Read) &&
+ explorerKey.QueryValue(wxT("Progid"), strKey) )
+ {
+ strKey = wxFileTypeImplGetCurVer(strKey);
+ }
+ }
+
+ if (!strKey && wxRegKey(wxRegKey::HKCR, m_ext + wxT("\\shell")).Exists())