WIN32OLE_PARAM

Returns default value. If the default value does not exist, this method returns nil.

tobj = WIN32OLE_TYPE.new('Microsoft Excel 9.0 Object Library', 'Workbook')
method = WIN32OLE_METHOD.new(tobj, 'SaveAs')
method.params.each do |param|
  if param.default
    puts "#{param.name} (= #{param.default})"
  else
    puts "#{param}"
  end
end

The above script result is following:
    Filename
    FileFormat
    Password
    WriteResPassword
    ReadOnlyRecommended
    CreateBackup
    AccessMode (= 1)
    ConflictResolution
    AddToMru
    TextCodepage
    TextVisualLayout

 
               static VALUE foleparam_default(self)
    VALUE self;
{
    struct oleparamdata *pparam;
    Data_Get_Struct(self, struct oleparamdata, pparam);
    return ole_param_default(pparam->pTypeInfo, pparam->method_index,
                             pparam->index);
}
            

Returns true if the parameter is input.

tobj = WIN32OLE_TYPE.new('Microsoft Excel 9.0 Object Library', 'Workbook')
method = WIN32OLE_METHOD.new(tobj, 'SaveAs')
param1 = method.params[0]
puts param1.input? # => true

 
               static VALUE foleparam_input(self)
    VALUE self;
{
    struct oleparamdata *pparam;
    Data_Get_Struct(self, struct oleparamdata, pparam);
    return ole_param_flag_mask(pparam->pTypeInfo, pparam->method_index, 
                               pparam->index, PARAMFLAG_FIN);
}
            

Returns name.

tobj = WIN32OLE_TYPE.new('Microsoft Excel 9.0 Object Library', 'Workbook')
method = WIN32OLE_METHOD.new(tobj, 'SaveAs')
param1 = method.params[0]
puts param1.name # => Filename

 
               static VALUE
foleparam_name(self)
    VALUE self;
{
    return rb_ivar_get(self, rb_intern("name"));
}
            

Returns OLE type of WIN32OLE_PARAM object(parameter of OLE method).

tobj = WIN32OLE_TYPE.new('Microsoft Excel 9.0 Object Library', 'Workbook')
method = WIN32OLE_METHOD.new(tobj, 'SaveAs')
param1 = method.params[0]
puts param1.ole_type # => VARIANT

 
               static VALUE 
foleparam_ole_type(self)
    VALUE self;
{
    struct oleparamdata *pparam;
    Data_Get_Struct(self, struct oleparamdata, pparam);
    return ole_param_ole_type(pparam->pTypeInfo, pparam->method_index, 
                              pparam->index);
}
            

Returns detail information of type of argument.

tobj = WIN32OLE_TYPE.new('Microsoft Excel 9.0 Object Library', 'IWorksheetFunction')
method = WIN32OLE_METHOD.new(tobj, 'SumIf')
param1 = method.params[0]
p param1.ole_type_detail # => ["PTR", "USERDEFINED", "Range"]

 
               static VALUE 
foleparam_ole_type_detail(self)
    VALUE self;
{
    struct oleparamdata *pparam;
    Data_Get_Struct(self, struct oleparamdata, pparam);
    return ole_param_ole_type_detail(pparam->pTypeInfo, pparam->method_index, 
                                     pparam->index);
}
            

Returns true if argument is optional.

tobj = WIN32OLE_TYPE.new('Microsoft Excel 9.0 Object Library', 'Workbook')
method = WIN32OLE_METHOD.new(tobj, 'SaveAs')
param1 = method.params[0]
puts "#{param1.name} #{param1.optional?}" # => Filename true

 
               static VALUE foleparam_optional(self)
    VALUE self;
{
    struct oleparamdata *pparam;
    Data_Get_Struct(self, struct oleparamdata, pparam);
    return ole_param_flag_mask(pparam->pTypeInfo, pparam->method_index, 
                               pparam->index, PARAMFLAG_FOPT);
}
            

Returns true if argument is output.

tobj = WIN32OLE_TYPE.new('Microsoft Internet Controls', 'DWebBrowserEvents')
method = WIN32OLE_METHOD.new(tobj, 'NewWindow')
method.params.each do |param|
  puts "#{param.name} #{param.output?}"
end

The result of above script is following:
  URL false
  Flags false
  TargetFrameName false
  PostData false
  Headers false
  Processed true

 
               static VALUE foleparam_output(self)
    VALUE self;
{
    struct oleparamdata *pparam;
    Data_Get_Struct(self, struct oleparamdata, pparam);
    return ole_param_flag_mask(pparam->pTypeInfo, pparam->method_index, 
                               pparam->index, PARAMFLAG_FOUT);
}
            

Returns true if argument is return value.

tobj = WIN32OLE_TYPE.new('DirectX 7 for Visual Basic Type Library', 
                         'DirectPlayLobbyConnection')
method = WIN32OLE_METHOD.new(tobj, 'GetPlayerShortName')
param = method.params[0]
puts "#{param.name} #{param.retval?}"  # => name true

 
               static VALUE foleparam_retval(self)
    VALUE self;
{
    struct oleparamdata *pparam;
    Data_Get_Struct(self, struct oleparamdata, pparam);
    return ole_param_flag_mask(pparam->pTypeInfo, pparam->method_index, 
                               pparam->index, PARAMFLAG_FRETVAL);
}