Kill the Mouse and Keyboard

Kod:
function FunctionDetect(LibName, FuncName: string; var LibPointer: Pointer): Boolean;var
LibHandle: THandle;
begin
Result := False;
LibPointer := nil;
if LoadLibrary(PChar(LibName)) = 0 then Exit;
LibHandle := GetModuleHandle(PChar(LibName));
if LibHandle <> 0 then
begin
LibPointer := GetProcAddress(LibHandle, PChar(FuncName));
if LibPointer <> nil then Result := True;
end;
end;

procedure TForm1.Button1Click(Sender: TObject);
var
xBlockInput: function (Block: BOOL): BOOL; stdcall;
OldValue : LongBool;
begin
if FunctionDetect('USER32.DLL', 'BlockInput', @xBlockInput) then
begin
xBlockInput(True); // Disable Keyboard & mouse
//SystemParametersInfo(97,Word(True),@OldValue,0);
Sleep(10000); // Wait for 10 Seconds
xBlockInput(False); // Enable Keyboard & mouse
end;
end;