System.ConsolePal.GetBufferInfo C# (CSharp) Méthode

        private static Interop.Kernel32.CONSOLE_SCREEN_BUFFER_INFO GetBufferInfo(bool throwOnNoConsole, out bool succeeded)
        {
            succeeded = false;

            IntPtr outputHandle = OutputHandle;
            if (outputHandle == s_InvalidHandleValue)
            {
                if (throwOnNoConsole)
                {
                    throw new IOException(SR.IO_NoConsole);
                }
                return new Interop.Kernel32.CONSOLE_SCREEN_BUFFER_INFO();
            }

            // Note that if stdout is redirected to a file, the console handle may be a file.  
            // First try stdout; if this fails, try stderr and then stdin.
            Interop.Kernel32.CONSOLE_SCREEN_BUFFER_INFO csbi;
            if (!Interop.Kernel32.GetConsoleScreenBufferInfo(outputHandle, out csbi) &&
                !Interop.Kernel32.GetConsoleScreenBufferInfo(ErrorHandle, out csbi) &&
                !Interop.Kernel32.GetConsoleScreenBufferInfo(InputHandle, out csbi))
            {
                int errorCode = Marshal.GetLastWin32Error();
                if (errorCode == Interop.Errors.ERROR_INVALID_HANDLE && !throwOnNoConsole)
                    return new Interop.Kernel32.CONSOLE_SCREEN_BUFFER_INFO();
                throw Win32Marshal.GetExceptionForWin32Error(errorCode);
            }

            if (!_haveReadDefaultColors)
            {
                // Fetch the default foreground and background color for the ResetColor method.
                Debug.Assert((int)Interop.Kernel32.Color.ColorMask == 0xff, "Make sure one byte is large enough to store a Console color value!");
                _defaultColors = (byte)(csbi.wAttributes & (short)Interop.Kernel32.Color.ColorMask);
                _haveReadDefaultColors = true; // also used by ResetColor to know when GetBufferInfo has been called successfully
            }

            succeeded = true;
            return csbi;
        }