[Overview][Constants][Types][Classes][Procedures and functions][Variables][Index] Reference for unit 'Variants' (#rtl)

TInvokeableVariantType

[Properties (by Name)] [Methods (by Name)] [Events (by Name)]

TCustomVariantType descendent that implements DispInvoke

Declaration

Source position: variants.pp line 226

type TInvokeableVariantType = class(TCustomVariantType, IVarInvokeable)

public

  function DoFunction(); virtual;

  

Empty stub for IVarInvokeable.DoFunction, to be implemented in descendents

  function DoProcedure(); virtual;

  

Empty stub for IVarInvokeable.DoProcedure, to be implemented in descendents

  function GetProperty(); virtual;

  

Empty stub for IVarInvokeable.GetProperty, to be implemented in descendents

  function SetProperty(); virtual;

  

Empty stub for IVarInvokeable.SetProperty, to be implemented in descendents

end;

Inheritance

TInvokeableVariantType,IVarInvokeable

  

TCustomVariantType descendent that implements DispInvoke

|

TCustomVariantType,IInterface

  

Base class for a custom variant type

|

TObject

  

Base class of all classes.

Description

TInvokeableVariantType is a TCustomVariantType descendent which implements the TCustomVariantType.DispInvoke method. It translates the DispInvoke" method to calls to one or more of the four methods of IVarInvokeable: DoFunction or DoProcedure for method calls (DISPATCH_METHOD) and GetProperty for property reading (DISPATCH_PROPERTYGET) or SetProperty for property writing (DISPATCH_PROPERTYSET). Other combinations are possible. It has empty stubs for these methods, which must be implemented in a descendent that is used to describe a custom variant.

See also

IVarInvokeable.DoFunction

  

Called for methods that return a result (functions)

IVarInvokeable.DoProcedure

  

Called for methods that do not return a result (procedures)

IVarInvokeable.GetProperty

  

Called when a property must be read

IVarInvokeable.SetProperty

  

Called when a property must be set


Documentation generated on: May 14 2021