KeyAvailable

bool System.ConsolePal.KeyAvailable

staticget

Definition at line 182 of file ConsolePal.cs.

    {
        get
        {
            if (_cachedInputRecord.eventType == 1)
            {
                return true;
            }
            global::Interop.InputRecord buffer = default(global::Interop.InputRecord);
            int numEventsRead = 0;
            while (true)
            {
                if (!global::Interop.Kernel32.PeekConsoleInput(InputHandle, out buffer, 1, out numEventsRead))
                {
                    int lastPInvokeError = Marshal.GetLastPInvokeError();
                    if (lastPInvokeError == 6)
                    {
                        throw new InvalidOperationException(System.SR.InvalidOperation_ConsoleKeyAvailableOnFile);
                    }
                    throw System.IO.Win32Marshal.GetExceptionForWin32Error(lastPInvokeError, "stdin");
                }
                if (numEventsRead == 0)
                {
                    return false;
                }
                if (IsKeyDownEvent(buffer) && !IsModKey(buffer))
                {
                    break;
                }
                if (!global::Interop.Kernel32.ReadConsoleInput(InputHandle, out buffer, 1, out numEventsRead))
                {
                    throw System.IO.Win32Marshal.GetExceptionForWin32Error(Marshal.GetLastPInvokeError());
                }
            }
            return true;
        }
    }