Curve Annotation Object

The Curve annotation object (ANN_OBJECT_CURVE) is a sequence of points that are joined by cubic polynomials such that adjacent polynomials are continuous at the first and second derivates. The result is a smooth, continuous curve going through all the points.

With the automated functions, each curve is formed with a mouse click, and the object is completed on a double click.

The points can be changed using the AnnGetPointX method, AnnGetPointY method and AnnSetPoints method.

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 shape of the object. Other applicable properties have the following defaults, which you can change:

Visible	Defaults to FALSE. It can be changed using the AnnSetVisible method.
Selected	Defaults to FALSE. It can be changed using the AnnSetSelected method.
Name	Defaults to an empty string. It can be changed using the AnnSetNameOptions method.
Line width	Defaults to 0.75 points. It can be changed using the AnnSetLineWidth method. (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 AnnSetLineStyle method.
ROP2 code	Defaults to ANN_ROP2_COPY. It can be changed using the AnnSetROP2 method.
Foreground color	Defaults to red. It can be changed using the AnnSetForeColor method.
Nodes	Defaults to displaying every node. It can be changed using the AnnSetNodes method.
Fixed State	Defaults to not fixed. It can be changed using the AnnFixed property.
Hyperlink	Defaults to None. It can be changed using the AnnSetHyperlinkString method.
Tag (identifier)	Defaults to 0. It can be changed using the AnnSetTag method.
Window handle	Defaults to NULL or the handle inherited from the container. It can be changed for all objects using the AnnSetWnd method.
User mode	Defaults to design mode or the mode inherited from the container. It can be changed for all objects using the AnnUserMode property.