Question

我希望能够分配一个按键，按下该按键将停止我的脚本。我尝试使用getkey，但无法解决问题

Answer 1

使用鼠标位置作为控制运行时的方式更加方便。

例如，当您将鼠标移到屏幕左边缘时，这将暂停脚本。

mymouse=get(0,'PointerLocation');
if mymouse(1)<4, keyboard;end

您可以将多个边缘位置用于不同的动作。

Answer 2

一个好的解决方案是创建一个图形，然后为该图形创建一个回调函数，当您按下一个键时，该函数会停止脚本。

例如：

function stoptest

%% Setup program
% create a figure for the application
myfig=figure;
% specify a callback function for the figure which will
%  listen for key presses
set(myfig,'KeyPressFcn', @stopkey);

data = []; k = 0;

%% Main Program Loop
% Use a global variable to control the loop
global RUNTEST;
RUNTEST=1;
fprintf(1,'Start MyFunction. Press alt-s to stop.\n');
while RUNTEST == 1
    % do whatever the loop does
    % maybe plot some data in the window
    % if the operator presses a key, it calls the figure callback function
    data = [data; k rand(1)];
    plot(data)

    drawnow;

end


function [] = stopkey(src,evnt)
% STOPKEY is a callback function that acts as the stop condition to cleanly
%  exit the test. It sets the value of RUNTEST to 0 when the user presses
%  <alt-s> in the progress figure (or <option-s> on a Mac).
global RUNTEST;
if length(evnt.Modifier) == 1 && strcmp(evnt.Modifier{:}, 'alt') && strcmp(evnt.Key,'s')
    RUNTEST = 0;
    fprintf('\nMyFunction: Operator quit by pressing (alt-s)\n');
end

return

Matlab中的Getkey记录按键

2 个答案: