[andreas_g]

@handycam: then it would be easier to hold down the option key and select "save as pdf" from the file menu
but anyway, thanks for the hint

i know there are many possibilities to get an image or pdf to the desktop. what i am looking for, is a way to do it with just one click. (without the "save as .." dialog)
just press the button, and the file is on my desktop.