One function for multiple pushbuttons in matlab

问题

I was thinking of setting one function for multiple pushbuttons, They all do the same thing, but it has a different defining value. This is so that when one pushbutton is activated it does not get mixed up with the other pushbutton of the same function

回答1:

See the documentation for callbacks. Callbacks accept two input arguments by default: the handle of the object that invoked the function and a structure of event data from the object, which may or may not be empty. You can use the String or Tag properties of your pushbutton to control behavior of your GUI based on what button is pressed using a single callback function. Consider the following example:

function testGUI
handles.mainwindow = figure();

handles.mytextbox = uicontrol( ...
    'Style', 'edit', ...
    'Units', 'normalized', ...
    'Position', [0.15 0.80 .70 .10], ...
    'String', 'No Button Has Been Pressed' ...
    );
handles.button(1) = uicontrol( ...
    'Style', 'pushbutton', ...
    'Units', 'normalized', ...
    'Position', [0.05 0.05 .30 .70], ...
    'String', 'Button1', ...
    'Callback', {@mybuttonpress,handles} ...
    );
handles.button(2) = uicontrol( ...
    'Style', 'pushbutton', ...
    'Units', 'normalized', ...
    'Position', [0.35 0.05 .30 .70], ...
    'String', 'Button2', ...
    'Callback', {@mybuttonpress,handles} ...
    );
handles.button(3) = uicontrol( ...
    'Style', 'pushbutton', ...
    'Units', 'normalized', ...
    'Position', [0.65 0.05 .30 .70], ...
    'String', 'Button3', ...
    'Callback', {@mybuttonpress,handles} ...
    );
end

function mybuttonpress(src, ~, handles)
switch src.String
    case 'Button1'
        handles.mytextbox.String = 'Button 1 Has Been Pressed';
    case 'Button2'
        handles.mytextbox.String = 'Button 2 Has Been Pressed';
    case 'Button3'
        handles.mytextbox.String = 'Button 3 Has Been Pressed';
    otherwise
        % Something strange happened
end
end

Note that this requires MATLAB R2014b or newer in order to use the dot notation for accessing object properties. See this blog post for more information.

回答2:

You can just define a generic function and call it from all of your push button callbacks

来源：https://stackoverflow.com/questions/31272494/one-function-for-multiple-pushbuttons-in-matlab