delphi 禁用win、alt_tab等其他组合键

//***********************头部定义变量
var
  WM_Sock :Integer;//禁用键用到变量
  hHandle :HWND;//禁用键用到变量
const
  LLKHF_ALTDOWN = $20;//屏蔽热键用



//************************定义函数
//禁用左右win,ALT_TAB等组合键
function LowLevelKeyboardProc(vNode:Integer;wParam:WPARAM;lParam:LPARAM):LRESULT;stdcall;
type
    KbDllHookStruct = record
    vkCode:DWord;
    ScanCode:DWord;
    Flags:DWord;
    Time:DWord;
    dwExtraInfo:DWord;
    end;
var
  P:^KbDllHookStruct;
  fEatKeystroke : boolean;
begin
  Result := 0;
  P := Pointer(LPARAM);
  if vNode = HC_ACTION then
  begin
    case wParam of
      WM_KEYDOWN,WM_SYSKEYDOWN,WM_KEYUP,WM_SYSKEYUP: