'Declaration
 
<DescriptionAttribute("Indicates if the checkbox will allow three check states rather than two.")>
<CategoryAttribute("Behavior")>
<DefaultValueAttribute(False)>
Public Property ThreeState As Boolean

'Usage
 
Dim instance As WinCheckBox
Dim value As Boolean
 
instance.ThreeState = value
 
value = instance.ThreeState

[Description("Indicates if the checkbox will allow three check states rather than two.")]
[Category("Behavior")]
[DefaultValue(false)]
public bool ThreeState {get; set;}

Property Value

If the ThreeState property is set to false, the CheckState property value can only be set to CheckState.Indeterminate in code and not by user interaction.

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

WinCheckBox Class
WinCheckBox Members