How to Work with Processes > Working with the Host Services Processes Group > Working with Flush Pending Message(s) Process

Process Purpose

The data being sent to a host are organized into messages.

The "Flush Pending Message(s)" process is used to delete messages in queue, meaning, pending messages that have not reached the intended host(s) and/or pending messages from a host to the application.

This process can only be used if the project being developed uses asynchronous communication - this type of communication implies organizing outgoing/incoming messages into a queue. If your project is developed to establish a synchronous communication, this process will NOT be able to execute.

When you add a process, you are required to define its settings. This occurs in the process's properties window which is displayed automatically after having added the "Flush Pending Message(s)" process. If any subsequent edition is required, double-click the process to open its properties window and enter the necessary modifications.

Proceed as follows:

Host
Host Name	Select the intended host profile from the drop-down OR click to create a new host profile or edit an existing one. See To Create a Host Profile OR To Edit a Host Profile OR The <Default> Host Profile.
Flush Pending Message(s)
To Send	Check this option to delete all the messages waiting to be sent to the host by the application.
Received	Under Development. When checked, this option will delete any pending messages sent by the host.
If Communication Error
Go to	Select a target location from the drop-down or list, in case there is a communications error. See Detail of a window below. When defining a screen as a target destination (ex: via a “Go to” process), you CANNOT use variables to specify the name of that target screen. You must select the intended screen from the available drop-down/list.

Detail of a window:

"S:Menu" is a screen included in the same program as the process.

"R:Routine_1" is a routine included in the same program as the process.

If required, click to attach any relevant notes to this process. Click it and enter your notes in the resulting text box. These notes will be displayed in the corresponding "Actions" tab or "Process" window (in the "Notes" field) and in the "Developer Report".

After filling in the required options, click to conclude or to abort the operation.

The added process is displayed in the corresponding "Actions" tab or "Process" window.

If you want to use a label as a target destination, you can use the "Auto-Label" mechanism. This alternative to the "Set Label" process allows you to create a label in the properties window of a process - specifically, in the fields used to define target destinations (ex: the "If Error..." type fields). See To Automatically Create a Label.

Use the right-click in MCL-Designer's input boxes to access some related options as well as the general "Cut", "Copy"; "Paste"; "Search" actions (active/inactive according to the current context).

Ex: If you right-click the "Variable" input box (included in a "Conversion's" properties window), you are provided with general editing/search actions and other more specific options such as "Variable Select" (see "Variable Select"); "Variable Insert" (see "Variable Insert"); "Insert Special Character" (see To Insert Special Characters into a Control's Text Input Field) and "Localization Select" (see Localization List).

If you right-click another input box, it may provide other possibilities.