Moving multiple boxes in figure?

Question

I already have the functions required to drag and drop a single box in a figure in MATLAB. The code I wrote fills the figure with several boxes. With another loop I filled the f

Answer 1

you should inverse the ordre of x and y vector, and you can use just one loop, the changment in your code is :

x2=x(end:-1:1); % invers the ordre
y2=y(end:-1:1);

for i=1:length(x)

set(hLine,'xdata',x(i),'ydata',y(i)); % move the point using set
                                  % to change the cooridinates.

set(hLine2,'xdata',x2(i),'ydata',y2(i));

 M(i)=getframe(gcf);

end

Answer 2

I usually use findall instead of findobj, in case the handles of the objects are not visible from the outside. Other than that I don't see why your code wouldn't work.

Here's an example:

%# make a figure with two buttons, same userData
fh=figure,
uicontrol('userdata',[2 3],'parent',fh)
uicontrol('userData',[2 3],'units','normalized','position',[0.5 0.5,0.1 0.1],'parent',fh)

%# change color to red
set(findall(fh,'userData',[2 3]),'backgroundcolor','r')

%# move to the same position
set(findall(fh,'userData',[2 3]),'position',[0.3,0.3,0.1,0.1])

Answer 3

As Jonas alludes to, the 'HandleVisibility' property of an object will determine if the object shows up in its parent's list of children, and thus if it will be returned by functions like FINDOBJ. The standard fix is to use the function FINDALL instead.

However, the 'HandleVisibility' property also comes into play in determining whether or not an object can become the current object (i.e. returnable by the function GCO). If it is set to 'off', then that object can't become the current object. Additionally, if the 'HandleVisibility' property of the parent figure of an object is set to 'off' then none of its children (including said object) can become the current object.

If 'HandleVisibility' is set to 'on' or 'callback' for all your objects and figures, then I think everything should work fine.