lmclaren
asked on
How do I do a GINA hook function with Delphi
I need to totaly disable CTL-ALT-DEL under Window XP, 2000 and NT.
I have done a lot of research and it looks like the best method is to hook the GINA SAS and eat the keys, I have C++ code that seems to work and need some help to do similar with Delphi.
It must not bring up any dialog boxes when CTL-ALT-DEL is pressed and I need to enable and disable it from a NT service.
regards
Lee
I have done a lot of research and it looks like the best method is to hook the GINA SAS and eat the keys, I have C++ code that seems to work and need some help to do similar with Delphi.
It must not bring up any dialog boxes when CTL-ALT-DEL is pressed and I need to enable and disable it from a NT service.
regards
Lee
ASKER CERTIFIED SOLUTION
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Hi Lee.
For the latest version of WinWlx take a look at the author's page at http://www.bendlins.de/nico/delphi/ .
Markus
PS: There are 2 more possibilities to disable "system hotkeys":
1. custom keyboard driver
2. GP (group policy)
For the latest version of WinWlx take a look at the author's page at http://www.bendlins.de/nico/delphi/ .
Markus
PS: There are 2 more possibilities to disable "system hotkeys":
1. custom keyboard driver
2. GP (group policy)
ASKER
Ferruccio68
From the link posted by Ferruccio68:
"I should also note that this will not intercept the SAS (secure attention sequence : ctrl-alt-del), nor the GINA code which is used to logon and/or authenticate passwords. There isn't a lot you can do to stop ctrl-alt-del besides writing your own GINA DLL as well and dealing with it there, if I remember correctly. This applies to windows nt/2000/xp only, not to 9x versions, I don't know how they operate in regard to ctrl-alt-del."
So this is a no go.
Knightmad
Looks like the link posted meets my stated requirements, I am not sure that I am going to be able to use the method though as the screen flashes when the sas is used.
I have found some C++ code that injects a dll into GINA and works very nicely with no limitations that I can find, For my basic skill It would take me a long time to convert to Delphi but is a good option.
DaFox
I have previously modified and used a keyboard hook, works fine all the way up to XP where it has a problem with suspend mode. I have been looking into my options before choosing which way I will go on this.
Conclusion:
Knightmad has answered the question so gets the points but I am not sure I will go with a straight GINA hook, If I go with GINA I will inject a dll for the added benifits. I will first have a looks at the XP DDK to see if I rewrite the original keyboard hook I modified.
regards
Lee
From the link posted by Ferruccio68:
"I should also note that this will not intercept the SAS (secure attention sequence : ctrl-alt-del), nor the GINA code which is used to logon and/or authenticate passwords. There isn't a lot you can do to stop ctrl-alt-del besides writing your own GINA DLL as well and dealing with it there, if I remember correctly. This applies to windows nt/2000/xp only, not to 9x versions, I don't know how they operate in regard to ctrl-alt-del."
So this is a no go.
Knightmad
Looks like the link posted meets my stated requirements, I am not sure that I am going to be able to use the method though as the screen flashes when the sas is used.
I have found some C++ code that injects a dll into GINA and works very nicely with no limitations that I can find, For my basic skill It would take me a long time to convert to Delphi but is a good option.
DaFox
I have previously modified and used a keyboard hook, works fine all the way up to XP where it has a problem with suspend mode. I have been looking into my options before choosing which way I will go on this.
Conclusion:
Knightmad has answered the question so gets the points but I am not sure I will go with a straight GINA hook, If I go with GINA I will inject a dll for the added benifits. I will first have a looks at the XP DDK to see if I rewrite the original keyboard hook I modified.
regards
Lee
Wasn't my answer good enough to deserve an "A" grade? To give "A" grade make Experts happy and don't cost a thing.
ASKER
Hi Knightmad,
I haven't graded many questions and looked to the faq for guidance. I am sorry if my grade was too harsh. I don't know how to change the grade now the question is closed. I will try to make it up to you.
Lee.
I haven't graded many questions and looked to the faq for guidance. I am sorry if my grade was too harsh. I don't know how to change the grade now the question is closed. I will try to make it up to you.
Lee.
The common behaviour is: "A" for helpful, working answers, "B" for poor incomplete answers and C never, better to keep the thead open than give a "C" grade.
About to change the grade, if you really want to change, leave a post in https://www.experts-exchange.com/Community_Support/ asking for this.
About to change the grade, if you really want to change, leave a post in https://www.experts-exchange.com/Community_Support/ asking for this.
ASKER
Done, Q_20736749
Thank you lmaclaren. Sometimes questioneer doesn't know that the grade is almost more important than the points itself : ) Thank you so much
https://www.experts-exchange.com/questions/20611873/Disabling-Enabling-the-keyboard.html