Add a Jing like floating icon in Desktop to access Greenshot functions. This is very useful when trying to capture screen when in a remote desktop application window.
I don’t know what a Jing like floating icon is, can you describe what you want in a bit more details?
Is a semi transparent icon that floats in the desktop. You can move it, drag and drop wherever you want in the desktop, and click on it when you need to capture the screen. See this: