IScaleBar Interface

Provides access to members that control the scalebar map surrounds.

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Members

	Name	Description
	BarColor	Color used to draw the bar.
	BarHeight	Height of the bar in points (1/72 inch).
	DelayEvents	Used to batch operations together to minimize notifications.
	Division	Number of units in one major division.
	Divisions	Total number of divisions (including those before zero).
	DivisionsBeforeZero	Number of divisions to the left of zero.
	Draw	Draws the map surround into the specified display bounds.
	FitToBounds	Adjusts the map surround to fit the bounds. The changed argument indicates whether the size of the map surround was changed.
	Icon	Icon used to represent the map surround.
	LabelFrequency	The label style indicating which marks are labeled.
	LabelGap	Vertical gap between the bar and the labels in points (1/72 inch).
	LabelPosition	Vertical positioning of the mark labels.
	LabelSymbol	Symbol used to draw the labels.
	Map	The parent map.
	Name	Name of the map surround.
	NumberFormat	Number format.
	QueryBounds	Returns the bounds of the map surround.
	Refresh	Makes sure the latest updates are refected the next time the Map Surround is drawn.
	ResizeHint	Indicates what happens when scale bar is resized.
	Subdivisions	Number of subdivisions per major division.
	UnitLabel	The unit label.
	UnitLabelGap	Gap between the scale bar and the unit label in points (1/72 inch).
	UnitLabelPosition	Vertical positioning of the unit label.
	UnitLabelSymbol	Unit label symbol.
	Units	The units reported.
	UseMapSettings	Sets division and units based on map.

Inherited Interfaces

CoClasses that implement IScaleBar

Remarks

The IScaleBar interface manages most of the properties of a scale bar.

Other interfaces relevant to the scale bar's format are IScaleMarks, IScaleLine, ISingleFillScaleBar and IDoubleFillScaleBar. See the Carto Library Overview to find out how these interfaces work together to create various types of scale bars.

BarHeight defines the height of the scale bar and is always expressed in points and BarColor is an IColor defining its color.

ResizeHint is an esriScaleBarResizeHint constant defining what happens when the scale bar is resized. The choices are a fixed scale bar, increasing the space between the division marks or the number of divisions.

Divisions and Subdvisions

The Divisions property controls the total number of divisions on the scale bar including divisions before zero which of course, are defined by the DivisionsBeforeZero property. Unsurprisingly, Subdivisions controls the number of subdivisions. Use IScaleMarks::MarkFrequency to set which divisions and subdivisions will be shown.

Division is expressed in the units the scale bar will show and defines the spacing of the divisions.

Units and Unit Labels

Units is of type esriUnits and defines the units the scale bar will show.

UnitLabel is a string that will be displayed to show this unit. For instance "Km".

The UnitLabelPosition is an esriVertPosEnum constant that defines the position of the label relatively to the line. UnitLabelGap defines the space in points between the label and the scale bar and UnitLabelSymbol is a text symbol used to display the label.

UseMapSettings will restore Units and UnitLabel in accordance with map units.

Division Labels

The LabelFrequency is an esriScaleBarFrequency constant that defines on which divisions and subdivisions labels will be shown.

NumberFormat is an INumberFormat that allows you for instance to modify the number of decimals used to display the labels.

The LabelPosition is an esriVertPosEnum constant that defines the position of the labels relatively to the line. LabelGap defines the space in points between the labels and the scale bar and LabelSymbol is a text symbol used to display the labels.

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