Implementing Annotations.Curve Annotation Object
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 points can be changed using the AnnGetPointX method, AnnGetPointY method and AnnSetPoints method.
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 AnnSetVisible method. |
|
Selected |
Defaults to FALSE. It can be changed using 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 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. |
For information on flipping, reversing or rotating annotation objects, refer to Flipping, Reversing and Rotating Annotation Objects.
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