How to pass handles into certain GUI callbacks Matlab

I'm writing a matlab program and I'm trying to pass around my handles struct to ALL my callbacks. The only problem is that I'm using GUIDE and I can't pass in handles as an argument to a function I created:

%The proper slider callback: Deleted the default within GUIDE

function sliderContValCallback(hFigure,eventdata)

%test it out- get the handles object and dispay the current value
%getappdata(handles.video_loader_button,'handles');

handles = guidata(hFigure);

handles.currentFrame = floor(get(handles.slider,'Value'));
set(handles.frameBox,'String',num2str(handles.currentFrame));
fprintf('slider value: %f\n',get(handles.slider,'Value'));


updateAxes(handles);

The problem is that the way I'm 'getting' handles right now is that it isn't really the same handles that the rest of the UI object callback functions are using. I also thought of passing handles around with getappdata, but you need handles to even do that so I'm stuck. This has been causing some problems, any help as to how to get around this would be awesome, thanks!