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Crossproduct Annotation Object

The CrossProduct annotation object (ANNOBJECT_CROSSPRODUCT) consists of two rulers intersecting at right angles. With the automated functions, the CrossProduct is started on a mouse-down event and completed on a mouse-up event.

The class for CrossProduct Annotation objects is LAnnCrossProduct.

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 points by calling the LAnnRuler::SetPoints function. The points are ordered as follows:

image\CrPoint.gif

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 LAnnRuler::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 LAnnRuler::SetLineStyle function.
ROP2 code Defaults to ANNROP2_COPY. It can be changed using the LAnnotation::SetROP2 function.
Fill mode Defaults to transparent. It can be changed using the LAnnotation::SetFillMode 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.
Font size Defaults to 10 point, translated with a scaling factor of 1. It can be changed using the LAnnotation::SetFontSize function.
Font underline Defaults to FALSE. It can be changed using the LAnnotation::SetFontUnderline function.
Font strikethrough Defaults to FALSE. It can be changed using the LAnnotation::SetFontStrikethrough function.
Font italic Defaults to FALSE. It can be changed using the LAnnotation::SetFontItalic function.
Font bold Defaults to FALSE. It can be changed using the LAnnotation::SetFontBold function.
Font name Defaults to "Arial". It can be changed using the LAnnotation::SetFontName function.
Ruler show flags Defaults to Show Length and Show Tic Marks. These options can be changed using the LAnnRuler::SetShowFlags function and the LAnnRuler::SetTicMarkLength 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. It can be changed for all objects using LAnnContainer::SetWnd.
User mode Defaults to design mode or the mode inherited from the container. It can be changed for all objects using LAnnContainer::SetUserMode.
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