To add user-defined properties to controls, use this code to store them in the control’s tag. You can define multiple additional properties at design or run time. You can easily retrieve the value stored:

 Control.Tag = AddParam((Control.Tag), _	"tooltip", "Close this window.")Control.Tag = AddParam((Control.Tag), "user", "True")Tooltip = GetParam((Control.Tag), "tooltip")Function AddParam (Text As String, _	Param As String, Value) As StringDim Text1 As StringIf Not IsNull(GetParam(Text, Param)) Then	Text1 = DelParam(Text, Param)Else	Text1 = TextEnd IfIf Text1 <> "" Then	Text1 = Text1 & ";"End IfAddParam = Text1 & Param & "=" & (Value)End FunctionFunction DelParam (Text As String, _	Param As String) As StringDim i As IntegerDim j As IntegerDim s1 As StringDim s2 As StringDim Text1 As StringText1 = Texti = InStr(UCase(Text), UCase(Param) & "=")If i > 0 Then	If i = 1 Then		s1 = ""	Else		s1 = Left(Text, i - 2)	End If	j = InStr(i, Text, ";")	If j > 0 Then		s2 = Mid(Text, j + 1)	Else		s2 = ""	End If	If s1 = "" Or s2 = "" Then		Text1 = s1 & s2	Else		Text1 = s1 & ";" & s2	End IfEnd IfDelParam = Text1End FunctionFunction GetParam (Text, Param)Dim i As IntegerDim j As IntegerDim Text1 As StringIf Len(Text) Then	If Left(Text, 1) <> "'" Then		Text1 = ";" & Text & ";"		i = InStr(LCase(Text1), ";" _			& LCase(Param) & "=")  + 1		If i > 1 Then			j = InStr(i + Len(Param), Text1, ";")			GetParam = Mid(Text1, i + Len(Param) + 1, _				j - i - Len(Param) - 1)		Else			GetParam = Null		End If	Else		GetParam = Null	End IfElse	GetParam = NullEnd IfEnd Function