Ruler Annotation Object

(Document and Medical Imaging toolkits)

The ruler annotation object (ANNOBJECT_RULER) is a simple line with gauges on both ends for measuring distance. With the automated functions, the ruler is started on a mouse-down event and completed on a mouse-up event.

For information on flipping, reversing or rotating annotation objects, refer to Flipping, Reversing and Rotating Annotation Objects.

With low-level functions, you must provide the points that define the ruler. Other applicable properties have the following defaults, which you can change:

Visible

Defaults to FALSE. It can be changed using the L_AnnSetVisible function.

Selected

Defaults to FALSE. It can be changed using the L_AnnSetSelected function.

Name

Defaults to an empty string. It can be changed using the L_AnnSetNameOptions function.

Line width

Defaults to 0.75 points. It can be changed using the L_AnnSetLineWidth function. (Note that when displayed, the line must have a minimum width of 1 pixel.)

Line style

Defaults to solid. It can be changed using the L_AnnSetLineStyle function.

ROP2 code

Defaults to ANNROP2_COPY. It can be changed using the L_AnnSetROP2 function.

Fill mode

Defaults to transparent. It can be changed using the L_AnnSetFillMode function.

Foreground color

Defaults to red. It can be changed using the L_AnnSetForeColor function.

Background color

Defaults to white. It can be changed using the L_AnnSetBackColor function. The default does not affect highlight, redaction, or note objects.

Font size

Defaults to 10 point, translated with a scaling factor of 1. It can be changed using the L_AnnSetFontSize function.

Font underline

Defaults to FALSE. It can be changed using the L_AnnSetFontUnderline function.

Font strikethrough

Defaults to FALSE. It can be changed using the L_AnnSetFontStrikeThrough function.

Font italic

Defaults to FALSE. It can be changed using the L_AnnSetFontItalic function.

Font bold

Defaults to FALSE. It can be changed using the L_AnnSetFontBold function.

Font name

Defaults to "Arial". It can be changed using the L_AnnSetFontName function.

Ruler show flags

Defaults to ANNSHOW_LENGTH + ANNSHOW_TICMARKS., using smart English as the measurement unit with a precision of 2, and a tic mark length of 30. These options can be changed using the L_AnnSetShowFlags function, the L_AnnSetGaugeLength function, and the L_AnnSetUnit function.

Gauge length

Defaults to 30. It can be changed using the L_AnnSetGaugeLength function.

Unit

Defaults to ANNUNIT_SMART_ENGLISH. It can be changed using the L_AnnSetUnit function.

Unit abbreviation

Varies depending on the length shown. It can be changed using the L_AnnSetUnit function.

Precision

Defaults to 2. It can be changed using the L_AnnSetUnit function.

Fixed State

Defaults to not fixed. It can be changed using the L_AnnSetFixed function.

Hyperlink

Defaults to None. It can be changed using the L_AnnSetHyperlink function.

Tag (identifier)

Defaults to 0. It can be changed using the L_AnnSetTag function.

Window handle

Defaults to NULL or the handle inherited from the container. It can be changed for all objects using the L_AnnSetWnd function.

User mode

Defaults to design mode or the mode inherited from the container. It can be changed for all objects using the L_AnnSetUserMode function.

Related topics:

Implementing Annotations.

Types of Annotations.

Low-Level Coordinate System for Annotations.

Annotation Objects - Automated Features

Using Rulers in Annotation Objects

Annotation Features

Help Version 20.0.2018.1.19
Products | Support | Contact Us | Copyright Notices
© 1991-2018 LEAD Technologies, Inc. All Rights Reserved.
LEADTOOLS Raster Imaging C API Help