how to stop while loop by right mouse button click

5 次查看（过去 30 天）
Sergey Lopatnikov
Sergey Lopatnikov 2017-2-18
编辑： Stephen23 2017-2-19
I would like to stop execution of the while loop by pressung right-click button. I wrote small function to pickup point from graph:
function y=graph_scan_ext (Name,Title,Xax,Yax,u,v)
Name=Name;
Tit=Title;
Xax=Xax;
Yax=Yax;
mainfg=figure();
mainax=axes();
htxt=uicontrol('Style','Text');
set(mainfg,'Name',Name,'NumberTitle','off');
x=u;
y=v;
plot(mainax,x,y);
title(Tit);
xlabel(Xax);
ylabel(Yax);
hold;
mark=0;
q=[];
while mark==0;
c=ginput(1);
scatter(c(1),c(2));
q=[q;c];
prompt = 'To continue press Enter; To stop, press any other key:';
str=input(prompt,'s');
if isempty(str)==0
mark=1;
y=q;
end
end
---------------
I works, but every time you need to confirm that you want to continue by pressing Enter or stop by pressing any other key.
My goal is to replace "key" action with simply right click of mouse button to stop while execution and do nothing to continue. I tried to change "while loop" like this:
while mark==0;
set(mainfg,'SelectionType','normal');
c=ginput(1);
scatter(c(1),c(2));
q=[q;c]
set(mainfg,'Selectiontype','alt');
set(mainfg,'WindowButtonDownFcn',@RightButDownFcn)
function click=RightButDownFcn(mainfg,event_data);
break;
end
y=q;
end
And got
Error: File: graph_scan_rc.m Line: 36 Column: 1
Function definition is misplaced or improperly nested.

请先登录，再回答此问题。

采纳的回答

Walter Roberson
Walter Roberson 2017-2-19
ax = gca;
fig = ancestor(ax, 'figure');
q = [];
hold(ax, 'on');
while true
c = ginput(1);
sel = get(fig, 'SelectionType');
if strcmpi(sel, 'alt'); break; end
scatter(c(1),c(2));
q=[q;c]
end
hold(ax, 'off')

更多回答（1 个）

Chad Greene
Chad Greene 2017-2-18
From an old answer by Jose-Luis,
f = figure(1);
click_type=get(f,'SelectionType');
if strcmp(click_type,'normal') %right click
%Do some stuff
elseif strcmp(click_type,'alt') %left click
%Do some other stuff
end

类别

在 Help Center 和 File Exchange 中查找有关 Just for fun 的更多信息

标签

产品

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by