Why the panel was not Visible??

I write this code inside callback function in guide pushbutton, to create programatical panel, but it was not visible. The code excute without any error.

% --- Executes on button press in bright.
function bright_Callback(hObject, eventdata, handles)
% hObject    handle to bright (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

%create new Panel for Brightness, Contrast, Resolution.

global stat
stat = 0;

figure1 = findobj('Tag','figure1');

brightPanel = uipanel('Parent',figure1,'Title','Sitting',...
      'Position',[83, 118, 250, 400],...
      'Tag','BrightPanel');

set(brightPanel,'Visible','off');

brightText = uicontrol(brightPanel,'Style','text',...
      'String','Brightness',...
      'Position',[50, 327, 82, 25]);
            
brightValueEdit = uicontrol(brightPanel,'Style','edit',...
      'String','',...
      'Tag','BVEdit',...
      'Position',[143, 327, 40, 25]);

brightValueSlider = uicontrol(brightPanel,'Style','slider',...
      'String','',...
      'Tag','BVSlider',...
      'Max',100,'Min',-100,'Value',0,...
      'SliderStep',[1 5],...
      'Position',[55, 283, 140, 18]);

set(brightPanel,'Visible','on');
set(handles.back2mainMenu,'Visible','on');
set(handles.mainMenu,'Visible','off');

PS: the mainMenu was hide and back2mainMenu puchbutton was shwo.

Answer 1

[Walter Roberson]

One possibility is that the panel might be behind another panel or axes. Starting in R2014b, uicontrols and uipanel no longer automatically appear on top when they are visible; if something else covers them up then they will not be visible.

[hassan sb]

Thank you, but how to bring it to the front

[Walter Roberson]

uistack() the uipanel

[hassan sb]

It still not work. I add this line

uistack(brightPanel, 'top');
set(brightPanel,'Visible','on');

[Walter Roberson]

Please attach your code and your .fig

[hassan sb]

Here is the project file. The callback is (bright_Callback). Thank you for your help.

[Merse Gaspar]

But how to set the order?

Answer 2

[Image Analyst]

You're using GUIDE so why not just place the panels in GUIDE? Why go to all the tedious trouble to create panels from scratch? For example if your figure units were 'normalized' and your panel units are in 'pixels' then your panels might be off the screen. Make it easy for yourself and just put the panels on there with GUIDE. I mean you're already using GUIDE so why not?

[hassan sb]

I have to hide mainMenu panel and show brightPanel at same position, how I can do this with GUIDE

[Image Analyst]

You can do it. Just put all the panels up the, put your controls into them. then arrange your panels, overlapping them if wanted. Then just set visibility in your code. But you don't need to recreate them in code, just set their visibility.

[hassan sb]

Ok. That is a good idea. Thank you for help.