Read Time Zone Names Stored in the Registry

The following code reads the time zone names stored in the registry and places those names in a combobox. The time zone names (there are about 50 or so) look like: “Greenwich Standard Time, Newfoundland Standard Time, Tasmania Standard Time,” etc.

Option ExplicitDim TimeZoneCol As CollectionConst ValueName As String = "Display"Const MasterKey As String = "SOFTWAREMicrosoftWindows NTCurrentVersionTime Zones"Private Sub Form_Load()    Dim KeyCol As Collection    'be sure key exists    If MRegistry.CheckRegistryKey(HKEY_LOCAL_MACHINE, MasterKey) Then        'retrieve all subkeys        Set KeyCol = MRegistry.EnumRegistryKeys(MRegistry.HKEY_LOCAL_MACHINE, MasterKey)        Dim TheKey As Variant        Set TimeZoneCol = New Collection        'for each subkey, get the "Name" value        For Each TheKey In KeyCol             CboTimeZone.AddItem MRegistry.GetRegistryValue(MRegistry.HKEY_LOCAL_MACHINE, addSlash(MasterKey) & TheKey, ValueName, "")        Next    End IfEnd SubPrivate Function addSlash(ByVal sPath As String) As String    sPath = Trim(sPath)    If Len(sPath) > 0 Then        If Right$(sPath, 1) <> "/" Then            If Right$(sPath, 1) <> "" Then                sPath = sPath & ""            End If        End If        addSlash = sPath    End IfEnd Function

NOTE: The class MRegistr handles the registry reading issues. The combobox CboTimeZone fills MRegistr with the time zones.

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