DataHub APIs for C++, Java, and .NET : Version 6.4
	Chapter 3. Standard Java Applets

DataHubGauge

DataHubGauge — a gauge for displaying DataHub point values.

Description

This applet consists of a needle that moves in an arc against a fixed background to indicate values of a DataHub point.

Base Class

DataHubListener

Parameters

Parameter	Type	Default	Description
`needlecolor`	`Color`	`RED`	The color of the needle.
`pincolor`	`Color`	`RED`	The color of the pin, which is the dot at the pivot point of the needle.
`needlelength`	`int`	`50`	The length of the needle, in pixels.
`basex`	`int`	`0`	The x coordinates of the pivot point of the needle.
`basey`	`int`	`0`	The y coordinate of the pivot point of the needle.
`pinradius`	`int`	`5`	The size of the pin.
`startvalue`	`double`	`0`	The point value associated with the start of the arc through which the needle travels.
`endvalue`	`double`	`100`	The point value associated with the end of the arc through which the needle travels.
`rangedegrees`	`double`	`180`	The number of degrees of the arc through which the needle will travel.
`startdegrees`	`double`	`0`	The beginning point of the arc through which the needle will travel. Degrees start at a 3 o'clock position and increase in an anticlockwise direction. So a start point of zero and a range of `180` will give a half circle arc on the horizontal.
`gaugeimage`	`string`	`null`	The filename for a background image for the gauge.
`editable`	`boolean`	`false`	Allows the viewer to move the needle and change the value.
`label1` to `label10`	`string`	`null`	You can add up to 10 text labels which will be displayed in front of the background image.
`labelx1 to labelx10`	`int`	`0`	The x coordinates for the center of each text label.
`labely1 to labely10`	`int`	`0`	The y coordinates for the center of each text label.
`labelfont1 to labelfont10`	`Font`	`null`	The font for each text label.
`labelcolor1 to labelcolor10`	`Color`	`RED`	The color for each text label.
`valuex`	`int`	`0`	The x coordinates of a label that shows the value associated with the data point.
`valuey`	`int`	`0`	The y coordinates of a label that shows the value associated with the data point.
`valuefont`	`Font`	`null`	The font for the value label.
`valueformat`	`string`	`null`	The format of the value label.
`valuecolor`	`Color`	`RED`	The color of the value label.
`showvalue`	`boolean`	`false`	Determines whether the value is shown or hidden.
`step`	`double`	`0`	The minimum value change necessary to reposition the needle.


DataHubEntryField		DataHubLabel