Widget Event Log

When a widget is loading and running, it produces several types of events. These events may be viewed in Event Log:

  • In GUI Builder, the Event Log is opened automatically when the widget is started
  • During normal operation, the log may be opened by clicking on icon in the widget window toolbar

Widget Events

The following event types are shown in the widget event log:

Load Error

This event occurs if component's property or the whole component cannot be properly decoded from XML-based widget template.

Event Name

loadError

Records:

1

Record Format:

Field Name

Field Type

Notes

component

String

Name of component that cannot be loaded.

property

String

Property name, or NULL if the whole component cannot be decoded from template.

error

String

Error message.

Binding Error

This error event is fired when a binding error occurs, i.e. binding expression cannot be evaluated or its result cannot be properly written into binding target.

Event Name

bindingError

Records:

1

Record Format:

Field Name

Field Type

Notes

target

String

Binding target.

expression

String

Binding expression.

activator

String

Binding activator.

execution

String

Binding execution mode: on startup, on event, or periodical.

error

String

Error text.

stack

Data Table

Stack trace of error source.

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