Matlab:实现 CTRL+C 的作用，但在代码中 [英] Matlab: implementing what CTRL+C does, but in the code

问题描述

我希望能够通过在代码中调用命令来终止我当前正在运行的脚本(函数).Return 只会终止当前函数而不是整个脚本.因此回报不是唯一的.

I would like to be able to terminate my current running scripts( functions ) by calling a command in the code. Return would only terminate the current function not entire script. Therefore return is not the one.

我正在寻找的是一个与 CTRL + C 完全相同的命令.我已经看到了这个:如何停止执行并注意到没有人还在那里为这个问题提供了正确的答案.

What I am looking for is a command which does exactly what CTRL + C do. I have already seen this: how to stop execution and noticed that no one has yet provided a proper answer for this question in there either.

最终我想在关闭图形时终止整个正在运行的脚本:

hFig = figure('CloseRequestFcn',{@closeHandler});

.
.
.
function closeHandler (src,evnt)

    CTRL+C    <--- I am looking for such a command     
end

附注.函数 error() 也不起作用:试试这个:

function terminateInCode()

hFig = figure('CloseRequestFcn',{@closeHandler});

while(1)

   plot(10*rand,10*rand,'+');
   pause(0.1);
end;

   function closeHandler (src,evnt)
      delete(hFig);
      error('program terminated!');
   end
end

推荐答案

这是一个基于 yuk 的回答的示例函数和示例.组件包括:

Here is a sample function with example based on yuk's answer. Components include:

• 确保命令窗口具有焦点以接收 CTRL+C
• 在中断发生后使用计时器释放CTRL+C
• 使用 Java 机器人按 CTRL+C

示例函数如下:

function terminateExecution
%terminateExecution  Emulates CTRL-C
%    terminateExecution   Stops operation of a program by emulating a
%    CTRL-C press by the user.
%
%    Running this function
%
%Example:
%for ix = 1:100
%    disp(ix)
%    if ix>20
%        terminateExecution;
%    end
%end

%1) request focus be transferred to the command window
%   (H/T http://undocumentedmatlab.com/blog/changing-matlab-command-window-colors/)
cmdWindow = com.mathworks.mde.cmdwin.CmdWin.getInstance();
cmdWindow.grabFocus();

%2) Wait for focus transfer to complete (up to 2 seconds)
focustransferTimer = tic;
while ~cmdWindow.isFocusOwner
    pause(0.1);  %Pause some small interval
    if (toc(focustransferTimer) > 2)
        error('Error transferring focus for CTRL+C press.')
    end
end

%3) Use Java robot to execute a CTRL+C in the (now focused) command window.

%3.1)  Setup a timer to relase CTRL + C in 1 second
%  Try to reuse an existing timer if possible (this would be a holdover
%  from a previous execution)
t_all = timerfindall;
releaseTimer = [];
ix_timer = 1;
while isempty(releaseTimer) && (ix_timer<= length(t_all))
    if isequal(t_all(ix_timer).TimerFcn, @releaseCtrl_C)
        releaseTimer = t_all(ix_timer);
    end
    ix_timer = ix_timer+1;
end
if isempty(releaseTimer)
    releaseTimer = timer;
    releaseTimer.TimerFcn = @releaseCtrl_C;
end
releaseTimer.StartDelay = 1;
start(releaseTimer);

%3.2)  Press press CTRL+C
pressCtrl_C

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
function pressCtrl_C
    import java.awt.Robot;
    import java.awt.event.*;
    SimKey=Robot;
    SimKey.keyPress(KeyEvent.VK_CONTROL);
    SimKey.keyPress(KeyEvent.VK_C);

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
function releaseCtrl_C(ignore1, ignore2)
    import java.awt.Robot;
    import java.awt.event.*;
    SimKey=Robot;
    SimKey.keyRelease(KeyEvent.VK_CONTROL);
    SimKey.keyRelease(KeyEvent.VK_C);

这篇关于Matlab:实现 CTRL+C 的作用，但在代码中的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！