Freehand HotSpot Annotation Object

(Document and Medical Imaging toolkits)

The Freehand HotSpot annotation object (ANNOBJECT_FREEHANDHOTSPOT) is an array of points that create a sequence of joined lines. With the automated functions, in design mode, each line segment is formed with a mouse move event when the left button is down, and the object is completed on a mouse up event. In run mode, the object is transparent, but the mouse pointer changes to a hand when it is over the object. Clicking on the button sends a WM_LTANNEVENT message that indicates an activation event.

You can change the points of a Freehand HotSpot object using the L_AnnGetPoints and L_AnnSetPoints functions.

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

With low-level functions, you must define the size and position of the rectangle. 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.

Nodes

Defaults to displaying every node. It can be changed using the L_AnnSetNodes function.

Metafile

Defaults to a campfire graphic. It can be changed using the L_AnnSetMetafile 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 Annotation Bitmap Objects

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