Skip to content

    TInvokeableVariantType

    TCustomVariantType descendent that implements DispInvoke.

    Declaration

    Source position: variants.pp line 233

    type

  TInvokeableVariantType = class(TCustomVariantType, IVarInvokeable)
  public
    function DoFunction : Boolean;
    function DoProcedure : Boolean;
    function GetProperty : Boolean;
    function SetProperty : Boolean;
  end;

    Inheritance

    Implements: IVarInvokeable

    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.

    Methods

    Member Visibility Description
    DoFunction public Empty stub for IVarInvokeable.DoFunction, to be implemented in descendents.
    DoProcedure public Empty stub for IVarInvokeable.DoProcedure, to be implemented in descendents.
    GetProperty public Empty stub for IVarInvokeable.GetProperty, to be implemented in descendents.
    SetProperty public Empty stub for IVarInvokeable.SetProperty, to be implemented in descendents.
    See all Methods

    See also

    Name Description
    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.