Disable the Ctrl-Alt-Del key combination (Windows 9x only)

Disable the Ctrl-Alt-Del key combination (Windows 9x only)

In Windows 95 and 98, when the screen saver is currently active (and the screen is blanked) the Ctrl-Alt-Del key combination doesn’t work, in order to force the user to enter her password. You can take advantage of this feature and programmatically disable this key combination, by making Windows believe that the screen saver is active.

Private Const SPI_SETSCREENSAVERRUNNING = 97Private Declare Function SystemParametersInfo Lib "user32" Alias _    "SystemParametersInfoA" (ByVal uAction As Long, ByVal uParam As Long, _    ByRef lpvParam As Any, ByVal fuWinIni As Long) As Long' disable the Ctrl-Alt-Del key combinationSystemParametersInfo SPI_SETSCREENSAVERRUNNING, True, ByVal 0&, 0' ....' re-enable itSystemParametersInfo SPI_SETSCREENSAVERRUNNING, False, ByVal 0&, 0


About Our Editorial Process

At DevX, we’re dedicated to tech entrepreneurship. Our team closely follows industry shifts, new products, AI breakthroughs, technology trends, and funding announcements. Articles undergo thorough editing to ensure accuracy and clarity, reflecting DevX’s style and supporting entrepreneurs in the tech sphere.

See our full editorial policy.

About Our Journalist