Main Menu: Edit > Copy
Toolbar button:

Either the active selection (if present) or the whole image will be copied to the clipboard.

Notice that only the selected part of the image will be copied, not any measurements.

Only selections marked with ,   or   tools allow copying.

To copy a rectangular, elliptical or polygonal selection it is not enough to select the object, but also the selection handles should be visible.

Example 1. Copying the selection is possible since the polygonal selection is active:

Example 2. The whole image will be copied, instead the polygonal measurement, because although the a polygonal measurement is selected no selection is active. To make the selection active the user should click on the polygon, so it would look as the above image:

Rectangular and elliptical measurement and selections can be copied exactly in the same way.