# RTD

Spread for WinForms provides advanced software components that support Excel import/export, full cell customization, an extensive calculation engine with over 450 functions and more, all with zero dependencies on Excel.

## Content



This function retrieves real-time data from a program that supports COM automation.

## Syntax

RTD(*progID*, *server*, *topic1, topic2, ...*)

## Arguments

This function has the following arguments:

| **Argument** | **Description** |
| -------- | ----------- |
| *progID* | Refers to the name of the ProgID of a registered COM automation add-in that has been installed on the local computer. |
| *server* | Refers to the name of the server where the add-in is. Leave the argument blank if this is run locally. |
| *topic1* | The *topic1* argument is required. Subsequent topics are optional. There can be 1 to 253 parameters that represent a unique piece of real-time data. |

## Remarks

The RTD COM automation add-in must be created and registered on a local computer.

## Data Types

Accepts string data. Returns string data.

## Version Available

This function is available in Spread for Windows Forms 11.0 or later.