how to use function handle
显示 更早的评论
I have a function boop:
function boop(A)
disp(A)
Now I want that whenever I move my mouse over a figure, the function will display 'hello world', How do i have to set the function? :
set(gcf,'windowButtonMotionFcn',@boop)
set(gcf,'windowButtonMotionFcn',@('hello world')boop)
set(gcf,'windowButtonMotionFcn',@boop('hello world'))
set(gcf,'windowButtonMotionFcn',@boop,('hello world'))
None of the above is working.
Thanks
采纳的回答
Guillaume
2015-8-20
This should work:
set(gcf, 'windowButtonMotionFcn', @(~, ~) boop('hello world'));
A UI callback always receives two arguments (an object handle and some event data), which you need to accept. I've done that above by creating an anonymous function that accepts and ignores these two arguments (the @(~, ~)) and then simply call your handle with the correct argument.
更多回答（1 个）
Morteza
2015-8-20
if you are using the GUI of Matlab in the figure-Ispector find the WindowsButtonMotionFcn and create its function then pregame it like as you want. like bellow:
function figure1_WindowButtonMotionFcn(hObject, eventdata, handles)
warndlg('hello','rrr');
类别
在 帮助中心 和 File Exchange 中查找有关 Function Creation 的更多信息
Translated by 
