TripleState Property

Applies to

CheckBox Object
OptionButton Object
ToggleButton Object

You can use the TripleState property to specify how a check box, toggle button, or option button will display Null values. Read/write Boolean.

expression.TripleState

expression Required. An expression that returns one of the objects in the Applies To list.

Remarks

The TripleState property uses the following settings.

Setting	Visual Basic	Description
Yes	True	The control will cycle through states for Yes, No, and Null values. The control appears dimmed (grayed) when its Value property is set to Null.
No	False	(Default) The control will cycle through states for Yes and No values. Null values display as if they were No values.

Note: You can set the TripleState property by using a control's property sheet, a macro, or Visual Basic for Applications (VBA) code.

This property can be set in any view.

Example

The following example displays a message describing in detail the state of a check box named "Check1" on the form "frmOperations".

Dim strTripleState As String
strTripleState = Forms.Item("frmOperations").Controls.Item("Check1").TripleState
Select Case strTripleState
    Case True
        MsgBox "For Check1, TripleState = " & strTripleState & _
            ". The control will cycle through states for Yes, No, " & _
            "and Null values. The control appears dimmed (grayed) " & _
            "when its Value property is set to Null."
    Case False
        MsgBox "For Check1, TripleState = " & strTripleState & _
            ". The control will cycle through states for Yes and No " & _
            "values. Null values display as if they were No values."
    Case Else
        MsgBox "Can't determine the TripleState property for Check1."
End Select