We help IT Professionals succeed at work.

Detecting the keyboard status

test031097
test031097 asked
on
Medium Priority
169 Views
Last Modified: 2010-04-04
How do I detect whether the Caps Lock, Num Lock, etc
keys are enabled?

Thanks in advance
Email: wenwei@mbox2.singnet.com.sg
Comment
Watch Question

Commented:
You'd use the getkeystate method.  Suppose you wanted to display CAPS or INSERT to a statuspanel.  Add the code below to a Timer component (or what ever you want to kick this off, like them actually pressing the CAPS or Insert keys)

if odd (getkeystate (VK_CAPITAL)) then
   statusbar1.panels[2].text := 'CAPS'
else
   statusbar1.panels[2].text := '';

For the insert key, use VK_INSERT.  The entire VK listing is in the Delphi help file.  Any questions, please add a comment.

Good Luck!
Jay

Not the solution you were looking for? Getting a personalized solution is easy.

Ask the Experts

Author

Commented:
Thanks a lot!!
Access more of Experts Exchange with a free account
Thanks for using Experts Exchange.

Create a free account to continue.

Limited access with a free account allows you to:

  • View three pieces of content (articles, solutions, posts, and videos)
  • Ask the experts questions (counted toward content limit)
  • Customize your dashboard and profile

*This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

OR

Please enter a first name

Please enter a last name

8+ characters (letters, numbers, and a symbol)

By clicking, you agree to the Terms of Use and Privacy Policy.