GUI with live preview stops upon clicking

i have created a GUI with live video preview based on the instructions in

http://www.mathworks.com/support/solutions/en/data/1-1CBPW/

however, when i click on the video preview, the video freezes. In my program, i need to get the mouse coordinates when a user clicks at any point in the video preview.

is there any way that will solve the video freezing problem?

Answer 1

[Jan]

Without seeing the code, it is hard to guess the reasons for its behavior. Did you try to use the debugger to find out, where the program "freezes"?

[Benjamin]

I have tried to use the debugger, but unable to capture the reason behind the freezing of axes. I realized that it is not the program that freezes, it is just axes that freezes.

Further exploration shows the following error :

Error using imaqdevice/stop (line 37) Image acquisition object OBJ is an invalid object.

Error in gui1>startStopCamera_Callback (line 106) stop(handles.video)

Error in gui_mainfcn (line 96) feval(varargin{:});

Error in gui1 (line 42) gui_mainfcn(gui_State, varargin{:});

Error in @(hObject,eventdata)gui1('startStopCamera_Callback',hObject,eventdata,guidata(hObject))

Error using waitfor Error while evaluating uicontrol Callback