GUI scroll inside a panel

Hello,

I am trying to create a scroll bar in order to scroll elements which are inside a panel.

I have one main panel with a slider and a sub panel inside. When I scroll the sub panel objects, they do not disappear when scrolling up or down. The sub panel do disappear but not the edit box.

Here is my code

function main hpanel=uipanel(figure,'Position',[0.2 0.2 0.6 0.6]); panel2 = uipanel('Unit','normalized','Position',[.2 .1 .5 .5],'Parent',hpanel);

model_edit = uicontrol('Style','edit','Parent',panel2,'BackgroundColor',[1 1 1],'Unit','normalized','Position',[.2 .8 .4 .1]); pos = get(panel2,'Position');

hpop = uicontrol('Style', 'slider','Position', [2 0 20 250],'Value',1,'Callback', {@slider_callback,panel2,pos},'Parent',hpanel); end

function slider_callback(src,event,arg1,pos) slidervalue= get(src,'Value'); new_pos = pos(2)-slidervalue+1; set(arg1,'Position',[pos(1) pos(2)-slidervalue+1 pos(3) pos(4)]); end

Thank you in advance,

[Walter Roberson]

Which matlab version are you using and on which OS ?

There was a bug about this a few versions back, that uicontrols were not being clipped by panel boundaries.

Answer 1

[Christophe]

Thank you for your answer. I am using the 2007b version but I tried on 2010a and it was the same bug. My OS is Vista SP2, I will try on XP later.

Answer 2

[Lisa liu]

hello Christophe ,i have met the same question as yours ,and i haven't solved it yet. I wonder how you solve this problem.Thank you . i work on matlab2012a,if this is a bug,then it hasn't be fixed.

Answer 3

[David]

The problem is that uicontrols are not clipped, as in they don't disappear when they move outside of the uipanel that holds the second uipanel that you move in order to scroll. This is apparently because the uicontrols are always rendered on top of any backgrounds so the ordering makes it so uicontrols don't disappear. The workaround I developed, which, I will admit, is rather klug-y, is to make two uicontrols that are text, that span the distance from the top of the uipanel to the edge of the window and the bottom of the uipanel to the edge of the window. These are text boxes with a background the same color as the window and text that is the same color as the background (otherwise they don't show up at all). Basic code below.

David

p2050_pos = [0.1 0.1 windowwidth/screensize(3)+0.05 0.85]; % position of my outer control panel

%uicontrols spanning the space where I want things to disappear. uicontrol('Style', 'Text', 'Parent',S.fh,'Units','normalized', 'Position', [ p2050_pos(1), 0, p2050_pos(3), p2050_pos(2)], 'BackgroundColor', [1 1 1],'string','woot!','ForegroundColor',[1 1 1]) uicontrol('Style', 'Text', 'Parent',S.fh,'Units','normalized', 'Position', [ p2050_pos(1), p2050_pos(2)+p2050_pos(4), p2050_pos(3), 1], 'BackgroundColor', [1 1 1],'string','woot!','ForegroundColor',[1 1 1])