slider for scrolling in GUI

Hello! I have some problems with a slider that I am using for moving my objects on an interface.

This is what I am using:

pos1=get(handles.btn1,'Position');
pos2=get(handles.btn2,'Position');
pos3=get(handles.edittxt,'Position');

slider_value=get(hObject,'Value');

set(handles.btn1,'Position',[pos1(1) pos1(2)-slider_value+1 pos1(3) pos1(4)]);
set(handles.btn2,'Position',[pos2(1) pos2(2)-slider_value+1 pos2(3) pos2(4)]);
set(handles.edittxt,'Position',[pos3(1) pos3(2)-slider_value+1 pos3(3) pos3(4)]);

At this point I am blocked because I really don't know how to move the scroll bar up and down. I don't know how to make conditions... Please help!!!

[Jan]

Please format your code. See: http://www.mathworks.com/matlabcentral/answers/13205-tutorial-how-to-format-your-question-with-markup

I do not understand the question. The scrollbar is moved by the mouse. And conditions are implemented by the IF statement. Please explain, what you want to achieve.

[Diana Acreala]

Please see my last response to Walter Roberson. Thanks!

Answer 1

[Walter Roberson]

You would put code such as that in the callback for a slider.

I do not recommend that code. As noted in response to your earlier question, you should instead insert your elements in a uipanel and then set() the Position of the panel in your scroll callback: that will have the effect of moving everything contained within the uipanel all as a group.

If you want to position a slider to a particular location, you set() the value property of the slider.

[Diana Acreala]

I would prefer to use this code. It's working, all the elements are moving. The problem is that I don't know how to make it work up and down. Now if I use ('pos1(2)-slider_value+1') it is moving only down(because of the minus) no matter what the slider arrow I am pressing. If I use ('pos1(2)+slider_value+1')it's moving only down, and the same thing, no matter what arrow of the slider I am pressing... I was thinking to put some conditions related to the maximum and minimum values.. but I don't know if it's correct because I don't really know what would be the correct limits.

My problem is that I have a big interface that can not be seen totally on small monitors.

Maybe you can give me another ideea, other then using this slider thing.

[Walter Roberson]

Store the _original_ positions for each item, such as in the item's UserData property, and then apply the slider value relative to the _original_ position.

If you have a big interface that cannot be seen totally on small monitors, that is often a sign that you should be redesigning your interface, such as with pop-up controls or menu items that temporarily give access to a particular section of the interface and then hide it mostly away again afterwards.

If you are using a new enough version of MATLAB, using uitab() might be another possibility. I have, though, not yet noticed anything with the uitab() interface that is not essentially the same as having a series of uipanel() and choosing which panel you want to be visible.

[Diana Acreala]

Oh...finally! It's working... I left aside the idea of using sliders. I found a solution and it was so simple.. http://www.mathworks.com/help/techdoc/creating_guis/f9-998364.html

I just put the Resize behaviour on Proportional and it's working just fine!

Thank you for your answers and for trying to help :D

[Walter Roberson]

That corresponds to using "normalized" units in my prior discussion of your options, http://www.mathworks.com/matlabcentral/answers/15641-adopt-the-gui-window-to-my-computer-settings

As I noted then: some GUI elements (especially text) look very ugly if they are specified in "normalized" units