Improve company productivity with a Business Account.Sign Up

x
  • Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 365
  • Last Modified:

API call for Windows2000 to lock the keyboard

Hi,
I have created a VB application to lock the computer (VB6) using the
following APIS:
clipcursor
getwindowrect
systemparamtersinfo (SPI_SCREENSAVERRUNNING)

The mechanism is that when the user locks the windows, the getwindowrect API gets the rectangular region of the form and clips the cursor so that it cannot move on the desktop. The Systemparamtersinfo API then locks the keyboard until the user enters the required password in the vb6 application. This app works fine under windows 98. However, under windows 2000 the systemparametersinfo(SPI_SCREENSAVERRUNNING) doesnot work. As a result,
the keyboard shortcuts such as CTL-ALT-DEL and CTL-TAB work even when
my VB6 application has locked the cursor within the rectangular region
of the form. Is there any alternative to the Systemparametersinfo API
that can do the lock the keyboard (not to the application but to
the rest of the windows)

THnaks
Rafay
0
rbali2004
Asked:
rbali2004
1 Solution
 
Jase-CoderCommented:
0
 
zonaltechCommented:
Here's an example project that uses the keyboard hooking and mouse restriction you are talking about:

http://www.planet-source-code.com/vb/scripts/ShowCode.asp?txtCodeId=54463&lngWId=1

It disables low level keys in NT, 2000, and XP.

Hope it helps!
0
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

Featured Post

Free Tool: Site Down Detector

Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Tackle projects and never again get stuck behind a technical roadblock.
Join Now