Drawing Mode

Select the drawing mode from the list box. These options provide different ways to merge the drawing pen with the screen to get different levels of visibility for the markers you are drawing. For example, theCopy Color mode shown copies (draws) the pen color onto the screen. An example of a more complex mode, XOR Color, performs an exclusive OR operation between the pen color and the screen pixel to draw a color that is the tinted opposite of the screen pixel.

Color

Click this button to open a Color Picker dialog. The selected color is the color of the pen that is mixed with the screen color by way of the Drawing Mode property.

Line Width

Specifies the width of a line in the marker, measured in screen pixels.

Marker Size

This specifies the size of he marker if the marker is a complex shape rather than a simple line. For example, Point Measurements use this as the size of the crosshair, measured in image pixels.

Hit Radius

Some operations require clicking on an existing marker. This is the radius from the marker center at which a click identifies the marker.

Report measurements in a docking pane

Check this box to report measurements in a private docking pane attached to the parent window. Otherwise, the results are reported in a top-level Report Window.