const
SPI_SCREENSAVERRUNNING = 97;
var
OldValue: Longbool;
{on}
SystemParametersInfo(SPI_SCREENSAVERRUNNING, Word(True), @OldValue, 0);
{off}
SystemParametersInfo(SPI_SCREENSAVERRUNNING, Word(False), @OldValue, 0);
{
Note: Runs only on Windows 95/98
Bemerkung: Läuft nur unter Windows 95/98
}
{********************************************************}
{ Disable the TaskManager on Win NT systems (2000/XP) : }
{ (C) by Delphi.About }
uses
Registry;
procedure EnableCTRLALTDEL(YesNo : boolean);
const
sRegPolicies = '\Software\Microsoft\Windows\CurrentVersion\Policies';
begin
with TRegistry.Create do
try
RootKey:=HKEY_CURRENT_USER;
if OpenKey(sRegPolicies+'\System\',True) then
begin
case YesNo of
False:
begin
WriteInteger('DisableTaskMgr',1);
end;
True:
begin
WriteInteger('DisableTaskMgr',0);
end;
end;
end;
CloseKey;
if OpenKey(sRegPolicies+'\Explorer\',True) then
begin
case YesNo of
False:
begin
WriteInteger('NoChangeStartMenu',1);
WriteInteger('NoClose',1);
WriteInteger('NoLogOff',1);
end;
True:
begin
WriteInteger('NoChangeStartMenu',0);
WriteInteger('NoClose',0);
WriteInteger('NoLogOff',0);
end;
end;
end;
CloseKey;
finally
Free;
end;
end;
procedure TForm1.Button1Click(Sender: TObject);
begin
EnableCTRLALTDEL(true);
end;