The Curve annotation object (ANNOBJECT_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 class for Polygon Annotation objects is LAnnCurve.
You can change the points using LAnnCurve::GetPoints and LAnnCurve::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 | Defaults |
---|---|
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 LAnnAutomation::SetLineStyle function. |
ROP2 code | Defaults to ANNROP2_COPY. It can be changed using the LAnnotation::SetROP2 function. |
Foreground color | Defaults to red. It can be changed using the LAnnotation::SetForeColor 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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