ImageGear for C and C++ on Windows v19.8 - Updated
Ruler
User Guide > How to Work with... > Annotations > New Annotation API: ArtX > ArtX Annotation Marks > ART 3.0/ART 2.0 Marks > Ruler

The Ruler mark enables the end user to create a line that displays its measurement.

Edit Mode

In Edit mode, end users create a mark as follows:

  1. Click the Ruler button.
  2. Click where the line begins and drag it to the end of the line.
  3. Release the mouse button to complete the line.
  4. Right-click the mark after it has been created to activate the popup Edit menu.