Solved

Disable Ctrl+Alt+Delete and Alt+F4

Posted on 1999-01-18
1
2,045 Views
Last Modified: 2008-02-26
How do you disable Ctrl+Alt+Delet and Alt+F4? I am creating a login program and want to make sure that the user is unable to close down the program without logging in. (I have already disabled the X button.)
0
Comment
Question by:Kory
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
1 Comment
 
LVL 3

Accepted Solution

by:
HATCHET earned 100 total points
ID: 1469280
Kory,

To disable CTRL+ALT+DEL and CTRL+ESC, use the following code :
________________________________________________________________

DECLARATION / FUNCTION (place in module):

Public Declare Function SystemParametersInfo Lib "user32" Alias "SystemParametersInfoA" (ByVal uAction As Long, ByVal uParam As Long, ByVal lpvParam As Any, ByVal fuWinIni As Long) As Long

Public Sub DisableCtrlAltDelete(bDisabled As Boolean)
  Dim X As Long
  X = SystemParametersInfo(97, bDisabled, CStr(1), 0)
End Sub


USE (place in your code where you want to use it):

'To disable Ctrl-Alt-Delete:
Call DisableCtrlAltDelete(True)

'To enable Ctrl-Alt-Delete:
Call DisableCtrlAltDelete(False)
________________________________________________________________

To disable ALT+F4, on the form that you think they will do an ALT+F4, put a private Boolean variable in the General/Declarations section, then test that Boolean variable in the Form_Unload event.  If your program hasn't set it to TRUE, then set "Cancel = True".  This will stop the unloading of your form/program.  If you want to close your program, set that Boolean variable to TRUE, then unload all forms, and/or use the End statement.

HATCHET
0

Featured Post

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

When trying to find the cause of a problem in VBA or VB6 it's often valuable to know what procedures were executed prior to the error. You can use the Call Stack for that but it is often inadequate because it may show procedures you aren't intereste…
When designing a form there are several BorderStyles to choose from, all of which can be classified as either 'Fixed' or 'Sizable' and I'd guess that 'Fixed Single' or one of the other fixed types is the most popular choice. I assume it's the most p…
As developers, we are not limited to the functions provided by the VBA language. In addition, we can call the functions that are part of the Windows operating system. These functions are part of the Windows API (Application Programming Interface). U…
Get people started with the process of using Access VBA to control Excel using automation, Microsoft Access can control other applications. An example is the ability to programmatically talk to Excel. Using automation, an Access application can laun…

688 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question