How to use a same variable to functions in Gui?

Question

Daniel Fonsêca 2018-10-16

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/424360-how-to-use-a-same-variable-to-functions-in-gui

编辑： Stephen23 2018-10-30

I have used the Gui to build the a programm. I would like when the user to click on menu item A, a number is stored in a variable. When the user click on menu item B, another number is stored in the same variable.

I want to use this variable in other function, in a loop. So, I'm trying that. Since now, I thank you for attention.

2 个评论
显示无隐藏无

Shameer Parmar 2018-10-19

编辑：Shameer Parmar 2018-10-19

Are you sure you want to click on menu item ? OR you want to say push button of GUI?

Daniel Fonsêca 2018-10-23

Menu item

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Daniel Fonsêca 2018-10-23

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/424360-how-to-use-a-same-variable-to-functions-in-gui#answer_343007

I got to solve that problem. I used the function "assignin()" to store a variable and its value. To acess that variable, I use "evalin"

3 个评论
显示 1更早的评论隐藏 1更早的评论

Daniel Fonsêca 2018-10-30

Thanks Stephen. But, do you know a way to transfer the datas without use the workspace? And, How I can clear the workspace after I use the programm?

Stephen23 2018-10-30

编辑：Stephen23 2018-10-30

@Daniel Fonsêca: you change your approach to writing GUI's.

A much better approach is to pass the data to a GUI when it is called, process the data entirely within the GUI workspaces, and then return the data when the GUI closes (the waitfor command is critical here). A lot of well written code loads, processes data, and saves all without touching the base workspace at all.

See this for a simple example of passing data into and back from a GUI:

https://www.mathworks.com/matlabcentral/fileexchange/48930-interactive-regular-expression-tool

Clearing a workspace is rarely required in well written code: functions, which have independent workspaces, have their memory usage managed automatically by MATLAB.

请先登录，再进行评论。