/// <summary>
/// Obtains the next character or function key pressed by the user.
/// The pressed key is optionally displayed in the console window.
/// </summary>
/// <param name="intercept">Determines whether to display the pressed key in the console window.
/// true to not display the pressed key; otherwise, false.</param>
/// <returns>A ConsoleKeyInfo object that describes the ConsoleKey constant and Unicode
/// character, if any, that correspond to the pressed console key.></returns>
public ConsoleKeyInfo ReadKey(bool intercept)
{
if (disposed)
{
throw new ObjectDisposedException(this.ToString());
}
// @TODO: How to I echo the key?
ConsoleInputEventInfo[] buff = new ConsoleInputEventInfo[1];
int numEvents = 0;
bool isGood = false;
ConsoleKeyEventInfo keyEvent = new ConsoleKeyEventInfo();
do
{
if (!WinCon.ReadConsoleInput(Handle, buff, 1, ref numEvents))
{
throw new IOException("Error reading console.", Marshal.GetLastWin32Error());
}
// Make sure it's a key down event and that the key is
// one of the virtual key codes....
if (buff[0].EventType == ConsoleInputEventType.KeyEvent)
{
keyEvent = buff[0].KeyEvent;
isGood = keyEvent.KeyDown && (Enum.GetName(typeof(ConsoleKey), (ConsoleKey)keyEvent.VirtualKeyCode) != null);
}
} while (!isGood);
// Create ConsoleKeyInfo from key event
return(new ConsoleKeyInfo(keyEvent.UnicodeChar,
(ConsoleKey)keyEvent.VirtualKeyCode,
(keyEvent.ControlKeyState & ConsoleControlKeyState.ShiftPressed) != 0,
(keyEvent.ControlKeyState & (ConsoleControlKeyState.RightAltPressed | ConsoleControlKeyState.LeftAltPressed)) != 0,
(keyEvent.ControlKeyState & (ConsoleControlKeyState.RightCtrlPressed | ConsoleControlKeyState.LeftCtrlPressed)) != 0));
}
/// <summary>
///
/// </summary>
/// <param name="nEvents"></param>
/// <returns></returns>
public ConsoleInputEventInfo[] ReadEvents(int nEvents)
{
if (disposed)
{
throw new ObjectDisposedException(this.ToString());
}
ConsoleInputEventInfo[] events = new ConsoleInputEventInfo[nEvents];
int eventsRead = 0;
if (!WinCon.ReadConsoleInput(Handle, events, nEvents, ref eventsRead))
{
throw new System.IO.IOException("Unable to read events.", Marshal.GetLastWin32Error());
}
if (eventsRead < nEvents)
{
// create a new array that contains just the events that were read
ConsoleInputEventInfo[] newBuff = new ConsoleInputEventInfo[eventsRead];
Array.Copy(events, newBuff, eventsRead);
events = newBuff;
}
return(events);
}
