Filter löschen
Filter löschen

Info

Diese Frage ist geschlossen. Öffnen Sie sie erneut, um sie zu bearbeiten oder zu beantworten.

Can you program a figure to execute the same callback after each child's callback?

1 Ansicht (letzte 30 Tage)
Dominik Mattioli
Dominik Mattioli am 11 Jul. 2019
Geschlossen: MATLAB Answer Bot am 20 Aug. 2021
Essentially, I'd like a callback that is for the figure and all of it's children, but is executed last. Of course, you could manually enter this code for every single callback, but perhaps there is a more elegant way?
fh = figure()
button1 = uicontrol('Parent', fh, 'Callback', button1_Callback)
button1 = uicontrol('Parent', fh, 'Callback', button2_Callback)
%...
buttonN = uicontrol('Parent', fh, 'Callback', buttonN_Callback)
function button1_callback(hObject, eventD, fh)
% Do stuff specific to this object.
% Perform this action (***I don't want to type this for every single callback***)
fh_callback(fh, eventD, fh); % Example.
end
function button2_Callback(hObject, eventD, fh)
% Do stuff specific to this object.
% Perform this action (***I don't want to type this for every single callback***)
fh_callback(fh, eventD, fh); % Example.
end
%...
function buttonN_Callback(hObject, eventD, fh)
% Do stuff specific to this object.
% Perform this action (***I don't want to type this for every single callback***)
fh_callback(fh, eventD, fh); % Example.
end
  6 Kommentare
Dominik Mattioli
Dominik Mattioli am 11 Jul. 2019
Are you sure that a WindowButtonDownFcn callback will fire after each uibutton's callback? My test right now only fires when the mouse clicks on panels, axes.

Antworten (1)

Steven Lord
Steven Lord am 11 Jul. 2019
Are you setting the figure object's CurrentObject property back to the figure object itself because your callbacks query the CurrentObject to determine what component to query or modify? That could be dangerous -- all it would take would be the user clicking in the wrong place at the wrong time to potentially break your UI by making the CurrentObject not what your callbacks expect it to be.
Instead, I would store the handles of the components in your UI and share the stored handles among the callbacks. That way you don't need to care what the current CurrentObject is, you can refer to either the object whose callback is currently executing (the first input to the callback function) or to a specific object whose handle is in the shared data.
  1 Kommentar
Dominik Mattioli
Dominik Mattioli am 11 Jul. 2019
Bearbeitet: Dominik Mattioli am 11 Jul. 2019
I was asking the question in the abstract because I think it could be helpful to others also, but to be more specific, I am setting the CurrentObject property back to the figure object itself so that clicking on uibuttons (and running their respective callbacks) does not disable quick keys that I've programmed for the UI.
Unless there is a property of uicontrols that prevents the current object from remaining on that button itself (absent a user-intervening mouse click on say, any other non-button object of the UI), this seems like it is necessary.

Produkte


Version

R2018a

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by