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Ctrl Alt Del Issues
- Detect if a Workstation is Locked
- Disable Task Manager
- Display over Ctrl Alt Delete Login Dialog
- Do Not Allow Closing of WB with Ctrl Alt Del
- Enable-Disable the Ctrl-Alt-Del or Alt-Tab Keys
- Get the Close Program Window to Pop Up
- Using WinLockDll to Block Ctrl-Alt-Del
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Using WinLockDll to Block Ctrl-Alt-Del
Question:
Here is a DLL that lets you lock out various Windows features, including Ctrl-Alt-Del:http://www.codeproject.com/win32/AntonioWinLock.asp?df=100&forumid=62485&exp=0&select=1088251
The author provides the DLL and demo programs written in C and VB, all with source code. I have been tinkering with calling the DLL via WinBatch and have it working for most features (on Windows XP):
DLLCall("WinLockDll.dll",Long:"Desktop_Show_Hide",Long:0)
DLLCall("WinLockDll.dll",Long:"Taskbar_Show_Hide",Long:0)
DLLCall("WinLockDll.dll",Long:"TaskSwitching_Enable_Disable",Long:0)
DLLCall("WinLockDll.dll",Long:"TaskManager_Enable_Disable",Long:0)
Message('','')
DLLCall("WinLockDll.dll",Long:"Desktop_Show_Hide",Long:1)
DLLCall("WinLockDll.dll",Long:"Taskbar_Show_Hide",Long:1)
DLLCall("WinLockDll.dll",Long:"TaskSwitching_Enable_Disable",Long:1)
DLLCall("WinLockDll.dll",Long:"TaskManager_Enable_Disable",Long:1)
But, I'm having trouble with the Ctrl-Alt-Del blocker. If you run the next script, you will see that Ctrl-Alt-Del gets blocked but does not get unblocked (until you reboot your computer):
DLLCall("WinLockDll.dll",Long:"CtrlAltDel_Enable_Disable",Long:0)
Message('','')
DLLCall("WinLockDll.dll",Long:"CtrlAltDel_Enable_Disable",Long:1)
Since the demo programs block and unblock Ctr-Alt-Del just fine on the same computer, I assume I have not used DLLCall
correctly. Anyone know what I'm doing wrong?
Answer:
A guess but you probably using the wrong calling convention. Try using DllCallCdecl.User Reply:
Brilliant! You saved me again! This works:
DllCallCdecl("WinLockDll.dll",Long:"Desktop_Show_Hide",Long:0)
DllCallCdecl("WinLockDll.dll",Long:"Taskbar_Show_Hide",Long:0)
DllCallCdecl("WinLockDll.dll",Long:"TaskSwitching_Enable_Disable",Long:0)
DllCallCdecl("WinLockDll.dll",Long:"TaskManager_Enable_Disable",Long:0)
DllCallCdecl("WinLockDll.dll",Long:"CtrlAltDel_Enable_Disable",Long:0)
Message('','')
DllCallCdecl("WinLockDll.dll",Long:"Desktop_Show_Hide",Long:1)
DllCallCdecl("WinLockDll.dll",Long:"Taskbar_Show_Hide",Long:1)
DllCallCdecl("WinLockDll.dll",Long:"TaskSwitching_Enable_Disable",Long:1)
DllCallCdecl("WinLockDll.dll",Long:"TaskManager_Enable_Disable",Long:1)
DllCallCdecl("WinLockDll.dll",Long:"CtrlAltDel_Enable_Disable",Long:1)
Article ID: W17027
File Created: 2007:07:03:14:27:40
Last Updated: 2007:07:03:14:27:40