Visual Basic&database, Alt Tab and Ctrl Alt Del

Alt Tab and Ctrl Alt Del

Author	Message
Dr K P Dawso #1 / 8	Alt Tab and Ctrl Alt Del I have a front end written in Visual Basic 3 Professional interface on to an Access 2 database. I want to prevent users tabbing out of this VB application by using Alt Tab. It would also be nice to be able to disable Ctrl Alt Delete. Can anybody advise me on how to implement this, please? Peter Dawson
Mon, 17 May 1999 03:00:00 GMT

John Harringt #2 / 8	Alt Tab and Ctrl Alt Del Why? What is so important about your software that I should not be allowed to Alt-Tab to Word or any other program without shutting it down? What is I suddenly need to send or receive a fax? And as far as the three finger salute is concerned, can you guarnatee that my computer will never lock up using your software? I know that you and I create the world's greatest software, but if you include features like that I don't want anything to do with yours. It is MY computer and I want to use it my way, not yours. Anybody besides me feel this way? >I have a front end written in Visual Basic 3 Professional interface on to >an Access 2 database. I want to prevent users tabbing out of this VB >application by using Alt Tab. It would also be nice to be able to disable >Ctrl Alt Delete. >Can anybody advise me on how to implement this, please? >Peter Dawson
Tue, 18 May 1999 03:00:00 GMT

Bob Butle #3 / 8	Alt Tab and Ctrl Alt Del You are right when considering running his software on YOUR computer. There are lots of cases, however, when you might be running his software on HIS computer and then he has every right to restrict what you can get at. A couple of examples might be the terminals you sometimes see in bookstores or libraries which replace card catalogs with on-line lookups. These are open to public use by anybody but the users shouldn't be using ALT-TAB or CTRL-ALT-DEL for any reason. The same is true for situations in schools which provide on-line registration/etc through public-access terminals. Quote: > Why? What is so important about your software that I should not be allowed to > Alt-Tab to Word or any other program without shutting it down? What is I > suddenly need to send or receive a fax? > And as far as the three finger salute is concerned, can you guarnatee that my > computer will never lock up using your software? > I know that you and I create the world's greatest software, but if you include > features like that I don't want anything to do with yours. It is MY computer and > I want to use it my way, not yours. > Anybody besides me feel this way? > >I have a front end written in Visual Basic 3 Professional interface on to > >an Access 2 database. I want to prevent users tabbing out of this VB > >application by using Alt Tab. It would also be nice to be able to disable > >Ctrl Alt Delete. > >Peter Dawson
Tue, 18 May 1999 03:00:00 GMT

Wayne C. Woo #4 / 8	Alt Tab and Ctrl Alt Del Quote: > Why? What is so important about your software that I should not be allowed to > Alt-Tab to Word or any other program without shutting it down? What is I > suddenly need to send or receive a fax? > And as far as the three finger salute is concerned, can you guarnatee that my > computer will never lock up using your software? > I know that you and I create the world's greatest software, but if you include > features like that I don't want anything to do with yours. It is MY computer and > I want to use it my way, not yours. > Anybody besides me feel this way? > >I have a front end written in Visual Basic 3 Professional interface on to > >an Access 2 database. I want to prevent users tabbing out of this VB > >application by using Alt Tab. It would also be nice to be able to disable > >Ctrl Alt Delete. > >Can anybody advise me on how to implement this, please? > >Peter Dawson i am writing an application for a customer who doesn't want the user (an employee) to use the computer for any other purpose or to be able to access the data other than by my interface... good reason to disable this stuff... and i would be interested in an answer as well..... -- woody
Wed, 19 May 1999 03:00:00 GMT

Michel Marini #5 / 8	Alt Tab and Ctrl Alt Del <snip> Quote: >> >I have a front end written in Visual Basic 3 Professional interface on to >> >an Access 2 database. I want to prevent users tabbing out of this VB >> >application by using Alt Tab. It would also be nice to be able to disable >> >Ctrl Alt Delete. >> >Can anybody advise me on how to implement this, please? >> >Peter Dawson >i am writing an application for a customer who doesn't want the user (an >employee) to use the computer for any other purpose or to be able to access >the data other than by my interface... >good reason to disable this stuff... and i would be interested in an answer >as well..... >-- woody If the Windows on that machine is to be used for no other purpose than to run your app., then make your app the Shell, replacing the Program Manager. Just change the Shell= line in the system.ini from program.exe to myapp.exe. For maintenance purposes, you can always change it back, fix Windows, and go back to myapp.exe as shell. Don't know about CTRL+ALT+DELETE... (Perhaps it's in the archives at Dejanews?)
Thu, 20 May 1999 03:00:00 GMT

Julie Wats #6 / 8	Alt Tab and Ctrl Alt Del Is it possible to recognize the ctrl-alt-delete? From what I understand this is the way a database gets corrupted when mulitple users are using it and they turn off the computer or ctrl-alt-delete out of it. I hope I've solved most of this by using recordsets from VB, but it would be nice to warn a user "The MTS System is still running, if possible please shut it down before using ctrl-alt-delete to reboot system." Is this possible? Thanks, Julie
Sat, 22 May 1999 03:00:00 GMT

Woodst #7 / 8	Alt Tab and Ctrl Alt Del Quote: >I have a front end written in Visual Basic 3 Professional interface on to >an Access 2 database. I want to prevent users tabbing out of this VB >application by using Alt Tab. It would also be nice to be able to disable >Ctrl Alt Delete. >Can anybody advise me on how to implement this, please? >Peter Dawson This is a piece of code I used when I wrote a Screensaver in VB4.0 :- Private Sub Form_KeyDown(Keycode As Integer, Shift As Integer) Dim Handle As Integer Dim ShiftDown, AltDown, CtrlDown Const SHIFT_MASK = 1 Const CTRL_MASK = 2 Const ALT_MASK = 4 ShiftDown = (Shift And SHIFT_MASK) > 0 CtrlDown = (Shift And CTRL_MASK) > 0 AltDown = (Shift And ALT_MASK) > 0 If ShiftDown Or CtrlDown Or AltDown Then Put whatever code you need in here End If End Sub I used it to trap the ALT key to stop users from ALT & TABbing past my Screensaver onto other programs, but it traps SHIFT and CTRL as well. Hope this is of some use ! Woodster
Sun, 23 May 1999 03:00:00 GMT

bobir #8 / 8	Alt Tab and Ctrl Alt Del Quote: >Re alt ctrl and del: I set KeyPreview to TRUE on form properties and then capture the KeyDown event on the form. With KeyPreview set to TRUE all KeyDown events go to the form first before going to the control with focus. KeyDown returns a Key integer and a Shift integer for shift 0001, 0010, and 0100, are returned showning the state of the three keys. You can test if all three (1,2,and 4) are returned and have the form respond as you like even changing a 1 to a 4 etc.
Mon, 24 May 1999 03:00:00 GMT

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