Angular Gauges
Library Overview
The Angular Gauges library contains controls that show their
input value graphically along an arc of a circle. Blocks in the library
differ from each other in their numerical ranges and in their use
of needles, numerical labels, text captions, annular components, and
tick marks.
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Customizing Angular Gauges
This section describes how to customize angular gauges by making
changes that are specific to the Angular Gauges library. For changes
that apply to multiple categories of blocks, see these sections:
The table below lists some common customizations involving the
ActiveX Control Properties dialog box that are specific to blocks
in the Angular Gauges library.
| Task | Description |
|---|
| Change the shape or size of a needle | On the Needles panel, set NeedleID to
the ID of the needle you want to change (0 if there
is exactly one needle). Then use the Style property
to choose the shape, and the Length and Width properties
to determine the length and thickness. |
| Label a needle by displaying the corresponding number | On the Digital panel, set NeedleID to
the ID of the needle you want to label and check the Enabled check
box. |
| Change the appearance of a needle label | On the Digital panel, first set NeedleID to
the ID of the needle whose label you want to change. Then use Decimals to
set the number of digits after the decimal point, Color to
set the color of the number, and FontID to refer
to a previously defined font (on the Fonts panel). |
| Move a needle label | On the Digital panel, first set NeedleID to
the ID of the needle whose label you want to change. Then use X
Position and Y Position to set the
fixed position for the label. |
| Draw an annular region along
the scale | On the Annulars panel, increase the value
of the Annulars property. The ID of the new region
is the Annulars property value minus one. To
specify properties of the new region, see the next task. |
| Change the appearance of an annular region | On the Annulars panel, first set AnnularID to
the ID of the annular region you want to change. Use the Radius properties
to control the annular region's thickness and radial position. Use
the Value properties to control the portion of
the scale's range that the annular region includes. Use Color to
control the annular region's color. |
| Delete the most recently added annular region | On the Annulars panel, decrease the Annulars property.
This deletes all properties associated with the region, such as its
color and thickness. |
Combining Multiple Needles in One Display
To display multiple needles on a single block, see the table
below. To learn how to control multiple needles simultaneously, see Controlling Multiple Graphical Elements.
| Task | Description |
|---|
| Add another needle to the display | On the Needles panel, increase the Needles property.
The ID of the new region is the Needles property
value minus one. To specify properties of the new needle, set NeedleID to
that ID and then set the remaining properties on the dialog box panel
accordingly. |
| Delete the most recently added needle from the display | On the Needles panel, decrease the Needles property.
This deletes all properties associated with the needle, such as its
color and shape. |
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 | Categories of Controls | | LEDs |  |
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