Matlab GUI: Do I need to pass hObject AND handles? -



Matlab GUI: Do I need to pass hObject AND handles? -

i new writing guis in matlab , noticed when passing info between callbacks 2 values hobject , handles passed.

from read , understood, hobject handle object contains real info (or @ to the lowest degree handles it) , handles not handle, struct reproducing construction of objects "behind" hobject. changing (or adding to) handles not alter real info seen calling function local copy. write changed info object pointed hobject need phone call guidata(hobject, handles).

is right far or did wrong?

i read can create struct similar handles calling handles = guidata(hobject).

so there point in passing both hobject , handles 1 of own functions instead of passing hobject , creating handles locally?

you right far. input parameter handles handy way of keeping track of components of ui. standard handles not input parameter. if utilize guide set parameter follows setting illustration callback alternative anonymous function @(hobject,eventdata)guitest('pushbutton1_callback',hobject,eventdata,guidata(hobject)). can of course of study done in code function handles = guidata(hobject).

usually not need alter in handles (only in objects refer to), if need alter in handles (for illustration if utilize store more handles ui elements) of import phone call guidata(hobject, handles) save changes.

so short reply question is: no, can retrieve handles when need them.

matlab handle matlab-guide

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