Programmatically event in App Designer, is it possible?

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Eric Delgado
Eric Delgado 2022 年 9 月 20 日
コメント済み: Adam Danz 2022 年 9 月 21 日
I am trying to create an event programmatically in App Designer, like a "PushedButton" or a "ValueChanged". Is it possible? I know that I can call the callback function directly, without passing the "event" argument, but I wish I could use notify function.
notify(app.myButton, 'ButtonPushed')
% Error using matlab.ui.control.Button/notify
% Cannot notify listeners of event 'ButtonPushed' in class 'matlab.ui.control.Button'.
  2 件のコメント
Eric Delgado
Eric Delgado 2022 年 9 月 21 日
編集済み: Eric Delgado 2022 年 9 月 21 日
Hey @Adam Danz, in a big project I prefer to create just one callback for several buttons (of the same family), using event.Source. If a create a "shortcut" for one of those buttons (an image in a mosaic, for example), I wish I could create an event programmatically.
function ButtonsPushedCallback(app, event)
switch event.Source
case app.Button1; % Execution code related to Button1
case app.Button2; % Execution code related to Button2
case app.Button3; % Execution code related to Button3
case app.Button4; % Execution code related to Button4
end
end
function Button1ShortcutCallback(app, event)
notify(app.Button1, 'ButtonPushed')
end

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採用された回答

Adam Danz
Adam Danz 2022 年 9 月 21 日
編集済み: Adam Danz 2022 年 9 月 21 日
For push buttons, the event is a ButtonPushedData object with properties Source (button handle) and EventName ('ButtonPushed'). Your switch/case matches the Source with known button handles.
From what I understand, you want to directly call the ButtonsPushedCallback function and provide a known button handle so you can run some code that belongs to one of the cases. If that's correct, when you call ButtonsPushedCallback, if you have access to the app object, you can provide the button handle within a structure with a field named Source.
Example:
S = struct();
S.Source = app.Button1;
ButtonsPushedCallback(app, S)
  2 件のコメント
Adam Danz
Adam Danz 2022 年 9 月 21 日
Glad it worked out! You could simplify my answer to create the structure and the field within the same line:
S = struct('Source', app.Button1);

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