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Closed Curve Annotation Object

The Closed Curve annotation object (ANNOBJECT_CURVECLOSED) is a sequence of points that are joined by cubic polynomials such that adjacent polynomials are continuous at the first and second derivates. Unlike the Curve annotation object, the first and last endpoints are also joined by a curve. The result is a smooth, continuous closed 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.

You can change the points using LAnnCurveClosed::GetPoints and LAnnCurveClosed::SetPoints.

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:

Property Default value
Visible Defaults to FALSE. It can be changed using the LAnnotation::SetVisible function.
Selected Defaults to FALSE. It can be changed using the LAnnotation::SetSelected function.
Name Defaults to an empty string. It can be changed using the LAnnotation::SetNameOptions function.
Line width Defaults to 0.75 points. It can be changed using the LAnnAutomation::SetLineWidth 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 LAnnContainer::SetLineStyle function.
ROP2 code Defaults to ANNROP2_COPY. It can be changed using the LAnnotation::SetROP2 function.
Fill pattern Defaults to solid. It can be changed using the LAnnAutomation::SetFillPattern function.
Fill mode Defaults to transparent. It can be changed using the LAnnotation::SetFillMode function. Before calling this function enable the alpha background fill mode by calling the LAnnotation::SetOptions function.
Polygon fill mode Defaults to winding. It can be changed using the LAnnAutomation::SetPolyFillMode function.
Foreground color Defaults to red. It can be changed using the LAnnotation::SetForeColor function.
Background color Defaults to white. It can be changed using the LAnnotation::SetBackColor function.
Nodes Defaults to displaying every node. It can be changed using the LAnnXXX::SetNodes function.
Fixed State Defaults to not fixed. It can be changed using the LAnnXXX::SetFixed function.
Hyperlink Defaults to ANNLINK_NONE. It can be changed using the LAnnotation::SetHyperlink function.
Tag (identifier) Defaults to 0. It can be changed using the LAnnotation::SetTag function.
Window handle Defaults to NULL or the handle inherited from the container.
User mode Defaults to design mode or the mode inherited from the container.
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