convert hotkey to mouse click

Sebastian42

In Win10 Pro, if I press CTRL PrntSc, Greenshot allows me to select an area for placing its screen-shot onto the clipboard. I would like to be able to do that by mouse-click instead of hotkey. So I need suitable code to put into a batch file. I imagine it is something along the lines of : Send("^{Printsreen}") - but THAT code does NOT achieve the desired effect. I'm looking for a suggestion of code that DOES work.