Fange Ctrl + Alt + Del

Using the SystemParametersInfo API function you can trick Windows into thinking that the screen saver is running. Doing so disables the Ctrl-Alt-Delete key sequence from displaying the "Close Program" dialog and rebooting the computer and Alt-Tab from switching to another application. It also stops Ctrl-Esc from opening the Start Menu.
If you wish to disable those keys while your application is running call the following SystemKeys function (place it in the Implementation section of your unit's code - and call from any procedure in your application - where needed). When you call SystemKeys, if Disable is True, the keys will be disabled, False otherwise.

procedure SystemKeys(Disable: Boolean) ;
var
  OldVal : LongInt;
begin
SystemParametersInfo(SPI_SCREENSAVERRUNNING, Word(Disable), @OldVal, 0) ;
end;
After a call to SystemKeys(True) the program runs, but you are unable to Alt-Tab to it nor switch to it in the task list. You can't invoke the Start button, either.

Skal kun standse ctrl + alt + delete, man må meget gerne kunne bruge ctrl + esc og alt + tab

så vidt jeg husker så er der en værdi i registreringsdatabasen der bestemmer rettighederne for "abegrebet", så principielt kan du skrive til regbasen og slå det til og fra der.

./psycosoft-funware :)

Tak, søgte lidt på google omkring det, og har fået det til at fungere. smid svar, så du kan få point :)

svar :)