LEADTOOLS Raster Imaging C DLL Help
| LEADTOOLS Raster Imaging C DLL Help > LEADTOOLS Raster Imaging Features > Annotations > Annotation Objects > Objects > Freehand Hot Spot Annotation Object |
(Document and Medical Imaging toolkits)
The Freehand Hot Spot 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 Hot Spot 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:
Low-Level Coordinate System for Annotations.
Annotation Objects - Automated Features
Using Annotation Bitmap Objects
