How can I pass variable for to m-file when push button is pressed?

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Teemu Juujärvi 2015-9-21

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评论： Stephen23 2015-9-23

Hi,

I have stop button at my GUI and if the stop button is pressed I want to pass a variable to m-file, how can do that? I have stop_flag=0 in m-file, but if stop button is pressed from the GUI then stop_flag should be 1 in m-file.

Teemu

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Answer 1

Stephen23 2015-9-21

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/244239-how-can-i-pass-variable-for-to-m-file-when-push-button-is-pressed#answer_193154

编辑：Stephen23 2015-9-21

在 MATLAB Online 中打开

Here are the documents showing how to pass arguments between callbacks and functions:

http://www.mathworks.com/help/matlab/creating_guis/share-data-among-callbacks.html

http://matlab.wikia.com/wiki/FAQ#How_can_I_share_data_between_callback_functions_in_my_GUI.28s.29.3F

If you want an example of this, take a look at my FEX submission cubhelix_view:

http://www.mathworks.com/matlabcentral/fileexchange/43700-cubehelix-colormaps--beautiful--distinct--versatile-

This function create a figure with a "demo" button: pressing this turn the demo on and off. It is based on a loop like this:

function chvDemo(tgh,~)
while ishghandle(tgh)&&get(tgh,'Value')
    % loop code here
end
end

and is called from the button like this:

uicontrol(figH, 'Style','togglebutton', 'Max',1, 'Min',0, 'Callback',@chvDemo);

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Teemu Juujärvi 2015-9-22

Does this work when I make GUI with guide-tool? Because I wonder what I have to put pushbutton callback and what to m-file? I can get pushbutton handle as matlab.graphics.GraphicsPlaceholder and then I can't get information from it. What I do wrong? Teemu