OPC Studio User's Guide and Reference
VarType Constructor(VarType)



OpcLabs.BaseLib Assembly > OpcLabs.BaseLib.ComInterop Namespace > VarType Class > VarType Constructor : VarType Constructor(VarType)
A VarType object to be copied from.

Because the VarType has an implicit conversion from System.Int32 and VarTypes, in languages that support implicit conversion operators (such as C# or VB.NET), you can simply use an integer (representing the numerical value of the COM VARTYPE), or an element of the VarTypes enumeration (or an allowed combination of VarTypes flags) in place of this parameter, and the corresponding data type specification will be constructed automatically. When the implicit conversion operators are not supported (such as with Python.NET), you can use the VarType Constructor(Int32) or VarType Constructor(VarTypes) constructor instead.

The value of this parameter cannot be null (Nothing in Visual Basic).

Initializes a new instance of the class to the value indicated by another VarType.
Syntax
'Declaration
 
Public Function New( _
   ByVal varType As VarType _
)
'Usage
 
Dim varType As VarType
 
Dim instance As New VarType(varType)
public VarType( 
   VarType varType
)
public:
VarType( 
   VarType^ varType
)

Parameters

varType
A VarType object to be copied from.

Because the VarType has an implicit conversion from System.Int32 and VarTypes, in languages that support implicit conversion operators (such as C# or VB.NET), you can simply use an integer (representing the numerical value of the COM VARTYPE), or an element of the VarTypes enumeration (or an allowed combination of VarTypes flags) in place of this parameter, and the corresponding data type specification will be constructed automatically. When the implicit conversion operators are not supported (such as with Python.NET), you can use the VarType Constructor(Int32) or VarType Constructor(VarTypes) constructor instead.

The value of this parameter cannot be null (Nothing in Visual Basic).

Remarks

This method or property does not throw any exceptions, aside from execution exceptions such as System.Threading.ThreadAbortException or System.OutOfMemoryException.

Requirements

Target Platforms: .NET Framework: Windows 10 (selected versions), Windows 11 (selected versions), Windows Server 2016, Windows Server 2022; .NET: Linux, macOS, Microsoft Windows

See Also