Are there any keyboard combinations to resize capture area using arrow keys?
You might look at using Greenshot for screen capture.
In addition to being a great screenshot tool in many ways, it allow use of the arrow keys for specifying the capture area.
Here is a link that might be useful: Greenshot Help.
Once again thanks! A 30 yr old very basic app 'MWSnap' still works and allows arrow keys to move both corners of the selected area; ShareX will do the same; FastStone also has this feature. I have not tried GreenShot but maybe it will also. I was really hoping Corel Capture would have arrow key control ...to keep it all in the same family!!
Thanks again for always responding.