I've used both the Capturebar and hotkey. I'm capturing a "Windows object" - the reason I'm not just using the built-in PrintScreen function, which otherwise does just what I want.
After the capture the "what do you want to do now" screen pops up, and I can't find a way to suppress that. Which just as well, I suppose, because the image doesn't get to the clipboard until I click the Save button there, even though I though the setting shown above should make that happen. I have been able to get rid of the drop-down on the next screen so that clicking the Clipboard button automatically saves the image to the clipboard. But it's still two extra clicks that are unneeded and I'd like to get rid of if I can.