MATLAB: Updating handles from within Position Changed Callback

impointroi

I have defined an impoint roi object inside of an axis. I've set up the impoint with a callback for position changed function, and in that function I change the position of a second impoint as follows:

function positionChanged(pos)
handles = guihandles;
pointMoved = gco; %moving point is currently selected object
...
kids = get(pointMoved,'Children');
kids2 = get(correspondingPoint,'Children');
set(kids2(1),'Position',get(kids(1),'Position'));
set(kids2(1),'String',get(kids(1),'String'));
set(kids2(2),'XData',get(kids(2),'XData'));
set(kids2(2),'YData',get(kids(2),'YData'));
set(kids2(3),'XData',get(kids(3),'XData'));
set(kids2(3),'YData',get(kids(3),'YData'));

I'm just trying to get correspondingPoint to have the same values and positions as the point generating the callback, and the above works pretty well for this. The problem is that upon moving or resizing my figure window, all of those set values (minus the 'String' property, for some reason) revert, and my second impoint goes back to the position it had before the callback.

Best Answer

Your figure might have a resizefcn callback that could be reverting those values. Check:

 get(gcf,'resizefcn');

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MATLAB: How to set the SelectionChangedFcn for the tabs group I have created

By writting the code like this:

%Setting the uipanel1 height, width and position as figure1
handles.uipanel1.Position = [0 0 handles.figure1.Position(3) handles.figure1.Position(4)];
%This line of code has to come before creating the tab group, otherwise the
%tabs won't have the same width height and position as figure 1, only the
%first one will.
% Create tab group with SelectionChangedFcn
handles.tgroup = uitabgroup('Parent', handles.figure1,'TabLocation', 'top','SelectionChangedFcn',...
    @(hObject,eventdata)Frogsim('tgroup_SelectionChangedFcn',hObject,eventdata,guidata(hObject)));
    % This line tells the uitabgroup function that the name of the callback
    % function for the selection change is named tgroup_SelectionChangedFcn
    % , and also sends in the input argument guidata(hObject) which is the
    % updated structure of handles and data , the eventdata is sent
    % automatically.
handles.tab1 = uitab('Parent', handles.tgroup, 'Title', 'Materials and Optics selection');
handles.tab2 = uitab('Parent', handles.tgroup, 'Title', 'Dispersion graphs');
handles.tab3 = uitab('Parent', handles.tgroup, 'Title', 'My Tab Label 3');
% Place panels into each tab
set(handles.uipanel1,'Parent',handles.tab1)
set(handles.uipanel2,'Parent',handles.tab2)
set(handles.uipanel3,'Parent',handles.tab3)
% Reposition each panel to same location as panel 1
set(handles.uipanel2,'position',get(handles.uipanel1,'position'));
set(handles.uipanel3,'position',get(handles.uipanel1,'position'));

Then the SelectionChangedFcn callback for the tab group called tgroup is set correctly. In this case my gui is called Frogsim , if your gui is called mygui then the third line should look like this:

    @(hObject,eventdata)mygui('tgroup_SelectionChangedFcn',hObject,eventdata,guidata(hObject)));

Later in the code I wrote the SelectionChangedFcn for tgroup like this:

% --- Executes on selection change of tabs in tgroup tab group.
function tgroup_SelectionChangedFcn(hObject, eventdata, handles)
% hObject    handle to tgroup (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

And then you can add whatever code you want to the selection change function.

To explain better what the third line did, the line of code:

@(hObject,eventdata)Frogsim('tgroup_SelectionChangedFcn',hObject,eventdata,guidata(hObject)));

creates an anonymous function that accepts the arguments

hObject
eventdata

then the anonymous function calls the function:

Frogsim('tgroup_SelectionChangedFcn',hObject,eventdata,guidata(hObject)));

what that does is to call the tgroup_SelectionChangedFcn function within Frogsim with arguments hObject and eventdata (That were passed inside by the anonymous function) and then the 3rd input argument is guidata(hObject) which will give the updated structure of handles and user data in a guide built gui, and that corresponds to the 3rd arguments of SelectionChangedFcn which is

handles

MATLAB: How to deselect ToolbarStateButton without clicking on it

% Non default toolbar allows access to Toolbar Children
handles.TB1 = axestoolbar(handles.Axes1,'default');
handles.TB1.Visible = 'on';
for i = 5:6 % Turn zoom buttons off
     handles.TB1.Children(i).Value = 'off'
end
% Reset data cursor
datacursormode(handles.figure1,'on')
datacursormode(handles.figure1,'off')

Best Answer

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MATLAB: How to set the SelectionChangedFcn for the tabs group I have created

MATLAB: How to deselect ToolbarStateButton without clicking on it

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