Technical Reference Manual - InduSoft

Screens and Graphics
• Parameters: The tags configured in this field are associated with the parameters of the method of the
corresponding ActiveX object. If the method does not support any parameter, the fixed text is
displayed in the Parameters field. Otherwise, you can type the tags associated in the parameters of the
ActiveX object. When the method has more than one parameter, you can type one tag for each parameter,
separating them by a comma ( , ). For example, TagA , TagB , TagC. When the method is executed,
either the value of the tags are written to the parameters of the method (input parameters), or, after the
method is executed, the ActiveX writes the value of the parameters to the tags (output parameters).
Tip: When you click the Browse button ( ), it will display the list of parameters supported by
the method, allowing you to associate one tag with each parameter.
• Trigger: When the tag configured in this field changes value, the respective method of the ActiveX control is
executed.
• Return: The tag configured in this field receives the value returned by the method (if any).
Configuring Events
The Events tab provides a grid with the following fields:
Configuration Dialog – Events Tab
• Event: List all events available from the ActiveX object.
• Parameters: The tags configured in this field are associated with the parameters of the event of the
corresponding ActiveX object. If the event does not support any parameter, the fixed text is
displayed in the Parameters field. Otherwise, you can type the tags associated with the parameters of the
ActiveX object. When the event has more than one parameter, you can type one tag for each parameter,
separating them by a comma (,). For example, TagA , TagB , TagC. When the event is generated, either
the value of the tags are written to the parameters of the event (input parameters), or the parameter values
are written to the tags (output parameters).
Tip: When you click the Browse button ( ), it will display the list of parameters supported by
the event, allowing you to associate one tag with each parameter.
• Script: The script configured in this field will be executed when the event is triggered by the ActiveX control.
Tip: When you click the Browse button ( ), it will display a dialog with the complete script
associated with the event. The main dialog displays only the expression configured in the first
line of the script.
.NET CONTROL OBJECT
.NET Components are designed according to the Microsoft .NET Framework, which is a standard for modular
programming technologies. Because IWS is a .NET container, you can configure and run .NET Components in
your project screens. The actual functions of a .NET Component are contained within a .NET Control object,
which provides the configuration dialogs.
.NET Components include the following interfaces:
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