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The TriState property is used to: - Determine if a check box option supports 3 states (checked, unchecked or undefined) or 2 states (checked or unchecked).
- Determine if the check boxes of a TreeView control support 3 states (checked, unchecked or undefined) or 2 states (checked or unchecked)
- Modify the type of a switch option: 3-state or 2-state options.
Remark: If the option manages all three states, it can take the value: - 0: option unchecked
- 1: option checked
- -1: unspecified option (grayed)
At runtime, if the option supports three states, a first click performed on an unchecked option will check it and a second click will give it an unspecified value. Caution: If a switch option managing 2 states has a value of -1, a WLanguage error is generated.. Similarly, a WLanguage error occurs if a 3-state option initialized to -1 is changed into a 2-state option.
INT_Interrupteur1[1].TroisEtats = True
INT_Interrupteur1[1] = -1
Sintaxis
Determining if an element supports three states Ocultar los detalles
<Result> = <Element name>.TriState
<Result>: Boolean - True if the option supports three states,
- False otherwise.
<Control used>: Control name Name of control to use: - Option of the Check Box control. The following syntax must be used: <Name of Check Box control>[<Option number>].
- TreeView control.
Managing the three states of an option in a Check Box control Ocultar los detalles
<Check Box control>[<Option number>].TriState = <Management mode>
<Check Box control>: Control name Name of Check Box control to use. <Option number>: Integer Number of the option to use. <Management mode>: Boolean - True to manage the three states,
- False otherwise.
Observaciones The TriState property applies only to: - the options of a Check Box control.
- the TreeView controls (in read-only).
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