嗅探“打印屏幕”键以自动将其内容附加到撰写的邮件上

Question

How can I sniff the "Print Screen" key so that when it is pressed, a number of events happen on a webpage:

1. There will be a dialog box that will pop up so that the user will only have to input the email address of the recipient.
2. The image on the clipboard is automatically attached to the composed mail.

If it helps, I'm using PHP 5.3.5, Javascript and Swift mailer.

Answer 1

You can not access clipboard and other system-specific facilities with javascript, due to security. Let alone sniff the keyboard.