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Indicator
There are so many situations which need to show the boolean discrete status,
such as TRUE/FALSE, YES/NO, or ON/OFF indicators. The ActiveX Indicator
controls are developed to visually show all the digital statuses.
Different customers may need different vivid indicators to represent different
digital statuses. For example, if there is no new email in the mailbox,
then an empty mailbox icon will be shown on the screen, otherwise a mailbox with a
flag will be shown to tell people that there are some new emails in the mailbox.
In the industrial automation fields, there are so many switch variables,
alarm variables, boolean process variables of which the statuses need to be
shown on Machine Interface devices. Even at the web design,
the indicators are very important for the whole page design,
more vivid indicators can attract more attentions of the web users.
Therefore for industrial applications or Web applications, we need a more powerful
indicator ActiveX control.
Requirements involving all these indicators vary based on different applications
and variable types. To meet all these requirements, the ActiveX indicator controls
provide many general default implementations to allow the users not to write any
extra codes to get what they expect, meanwhile two properties, i.e., OnPicture
and OffPicture, are designed to allow the customers to provide their own vivid images
for ON and OFF status. The combination show of the image and text is also possible
when you use this control. Powerful border style design is provided to make the
customer design their own customized border style as they like.
Matrix LED is a common indicator panel that can be used to display a number of
discrete Boolean valraibles. A LED panel containing many indicators can be used
to show the status of a group relative switch variables.
There are four indicator components provided in the Dragonfly ActiveX Indicator
package, i,e,, BallIndicator, BmpIndicator, ShapeIndicator and LEDMatrix.
BallInticator is designed as a visual LED; BmpIndicator is designed to allow the
customer to provide their own images for ON/OFF statuses; ShapeIndicator can be
configured to many different shapes to demonstrate the switch status; And LEDMatrix
groups a number of indicators in a matrix panel. The control size and performance
is perfect. Its lightweight feature makes it a good option in the Web design.
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