Once in a blue moon you need to capture a screenshot (aka screendump) and paste it into a document or a web page. As you probably know this is quite easy using the PrintScreen (aka PrntScrn) key which will capture the screenshot and put it on your clipboard. Typically there are two ways to do this.
PrintScreen: Screenshot of the entire screen (i.e. all windows)
ALT + PrintScreen: Screenshot of only current window (i.e. window in focus).
However, what if you need to capture a screenshot of the current window with a drop down menu showing? That is a bit more difficult as the drop down menu disappears as soon as you press the ALT key. So there are 2 ways to do this:
You could grab the entire screen using PrintScreen and bring the capture into Paint (or any other paint program) and cut out the part that you need.
However, there is a much simpler solution. Put focus on the window you want to capture. Close the drop down menu if open. Press ALT + (letter to open the drop down), keep holding ALT down, and press PrintScreen. You can even move the mouse around to highlight the item you want as long as you keep holding down ALT.
For the screen shot below, I pressed ALT + v (to open View), then I moved the mouse to open "Text Size", then I pressed ALT + PrintScreen to capture the window plus drop down. The important thing is to hold down the ALT key the whole time.
Happy screen capturing.