matlab获取键盘键值

您好，可以使用MATLAB中的函数"getkey"来获取键盘键值。以下是一个示例代码：

function key = getkey(timeout)
% GETKEY - get a keypress
%   key = GETKEY waits for a keypress and returns a single key. This
%   function is a replacement for MATLAB's built-in GETKEY function, which
%   does not work on all platforms.
%
%   key = GETKEY(TIMEOUT) waits for a keypress for TIMEOUT seconds. If no
%   key is pressed within that time, an empty matrix is returned.
%
%   See also INPUT, GETCH.
%
% Written by David Reiss <dreiss@github.com>
% Modified by Xiangrui Li <xiangrui.li@gmail.com>

% This function is a modified version of GETKEY by David Reiss
% (http://www.mathworks.com/matlabcentral/fileexchange/7465-getkey),
% which is itself a modified version of GETKEY by Oleg Komarov
% (http://www.mathworks.com/matlabcentral/fileexchange/7465-getkey),
% which in turn is inspired by a USENET posting by Malcolm McLean
% (http://www.mathworks.com/matlabcentral/newsreader/view_thread/10104).

% Check the system to see if Java is available.
if ~usejava('awt')
    error('GETKEY requires Java to run.')
end

% Set default values for the input arguments.
if nargin < 1
    timeout = inf;
end

% Get the start time.
start_time = tic;

% Initialize the key value.
key = [];

% Loop until a key is pressed or the timeout is exceeded.
while isempty(key) && (toc(start_time) < timeout)
    % Check for a keypress.
    drawnow;
    key = get(gcf, 'CurrentCharacter');
end

使用该函数，可以在MATLAB中获取键盘按键的值。例如，以下代码将等待用户按下任意键，并将按键的值存储在变量"key"中：

key = getkey();
disp(key);

希望对您有所帮助！