MovStr Function Update In MATLAB 2015 Version - matlab

Question

I Need help regarding MovStr Function Update in MATLAB Version 2015. I was using MATLAB Function 2013 before. The function given below is not working for me. How should I make it workable ? Thanks
function MoveStr(ws)
% ws: with of a blank character
p1 = get(gca,'CurrentPoint');
set(gcf,'Pointer','fleur')
set(gcf,'WindowButtonUpFcn', sprintf('MoveStrUp(%1.20g,%1.8g,%1.8g,%1.8g)',gcbo,p1(1,1),p1(1,2),ws))
set(gcf,'WindowButtonMotionFcn',sprintf('MoveStrMo(%1.20g,%1.8g,%1.8g)',gcbo,p1(1,1),p1(1,2)))
% alle Textobjekte mitbewegen
ch = [gcbo get(gcbo,'UserData')];
for i = 1:length(ch)
if strcmpi(get(ch(i),'Type'),'text')
set(ch(i),'Selected','on')
end
end
function MoveStrMo(obj,x,y)
%set(gcf,'WindowButtonMotionFcn','')
d_pos = get(gca,'CurrentPoint');
set(gcf,'WindowButtonMotionFcn',sprintf('MoveStrMo(%20.15f,%f,%f)',obj,d_pos(1,1),d_pos(1,2)))
%set(gcf, 'WindowButtonMotionFcn', #(s,e)MoveStrMo(obj,d_pos(1,1),d_pos(1,2)));
d_pos = [d_pos(1,1)-x,d_pos(1,2)-y 0];
ch = [obj get(obj,'UserData')];
for i = 1:length(ch)
if isgraphics(ch( i ),'text')
pos = get(ch(i),'Position');
set(ch(i),'Position',[pos(1) pos(2) 2] + d_pos)
end
end
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
function MovePointer
ans = get(gcbo,'UserData');
if strcmpi(get(ans(1),'Type'),'string')
% if isgraphics (ans1(1), 'string')
ans = ans(2);
end
set(gcf,'Pointer','fleur')
% set(gcf,'WindowButtonUpFcn',sprintf('MovePointerUp(%20.15f,%20.15f)',gcbo,ans(1)))
% set(gcf,'WindowButtonMotionFcn',sprintf('MovePointerMo(%20.15f,%20.15f)',gcbo,ans(1)))
set(gcf,'WindowButtonUpFcn',sprintf('MovePointerUp(%20.15f,%20.15f)',double(gcbo),ans(1)))
set(gcf,'WindowButtonMotionFcn',sprintf('MovePointerMo(%20.15f,%20.15f)',double(gcbo),ans(1)))
% set(gcf, 'WindowButtonUpFcn', #(s,e)MoveStrUp(gcbo, ans(1)));
% set(gcf, 'WindowButtonMotionFcn', #(s,e)MoveStrMo(gcbo, ans(1)));
set(gcbo,'Selected','on')

Answer 1

In older versions of MATLAB, graphics handles were simply floating point numbers or integers which could be used to refer to the graphics object. Beginning with R2014b, all graphics objects are objects by default which breaks your code since sprintf('%g') isn't going to be able to convert the object to a number itself.
You could still get the numeric handle of a graphics object by using the double method of the graphics object:
set(gcf,'WindowButtonMotionFcn',sprintf('MoveStrMo(%1.20g,%1.8g,%1.8g)',double(gcbo),p1(1,1),p1(1,2)))
BUT Please do not to this. You should be using function handles to create your callback instead of constructing an elaborate string that will be evaluated by MATLAB. This way you can pass the graphics object directly and you don't have to worry about any loss of precision when converting floating point numbers to strings. Also anyone trying to read your code later will really appreciate it as it is much cleaner.
set(gcf, 'WindowButtonUpFcn', #(s,e)moveStrUp(gcbo, p1(1,1), p1(1,2), ws));
set(gcf, 'WindowButtonMOtionFcn', #(s,e)MoveStrMo(gcbo, p1(1,1), p1(1,2)));
Update
Since it appears that you assign callbacks from within your callbacks, you will need to modify those as well to use the anonymous function format:
function MoveStrMo(obj,x,y)
d_pos = get(gca,'CurrentPoint');
set(gcf, 'WindowButtonMotionFcn', #(s,e)MoveStrMo(obj, d_pos(1,1), d_pos(1,2));
d_pos = [d_pos(1,1)-x,d_pos(1,2)-y 0];
ch = [obj get(obj,'UserData')];
for i = 1:length(ch)
if isgraphics(ch( i ),'text')
pos = get(ch(i),'Position');
set(ch(i),'Position',[pos(1) pos(2) 2] + d_pos)
end
end
end
And MovePointer
function MovePointer
ans = get(gcbo,'UserData');
if strcmpi(get(ans(1),'Type'), 'text')
ans = ans(2);
end
set(gcf,'Pointer','fleur')
set(gcf, 'WindowButtonUpFcn', #(s,e)MoveStrUp(gcbo, ans(1)));
set(gcf, 'WindowButtonMotionFcn', #(s,e)MoveStrMo(gcbo, ans(1)));
set(gcbo,'Selected','on')
end