Displaying figures in a while Loop

Hi everybody,

I'm trying to run a while loop only when I'm receiving video from a webcam, and then stop the while loop when I manually 'x' out of the figure of the video feed. The way I'm currently doing it I always get an error when exit out of the video figure, and I've only figured out how to do it for a specified amount of time. Please help..

My current code is like this:

Video = videoinput('winvideo',2);
set(Video,'FramesPerTrigger',Inf); 
set(Video,'ReturnedColorspace','grayscale');
start(Video)
while(Video.FramesAcquired <= Inf)
 data = getsnapshot(Video)
 imshow(data)
%AND SO ON........

Answer 1

[Walter Roberson]

Video = videoinput('winvideo',2);
set(Video,'FramesPerTrigger',Inf); 
set(Video,'ReturnedColorspace','grayscale');
start(Video)
imhand = imshow(zeros(2,2));    %establish an image object
while(Video.FramesAcquired <= Inf)
  data = getsnapshot(Video)
  if ~isgraphics(imhand); break; end   %image gone, user must have deleted it
  set(imhand, 'CData', data);
end
stop(Video);

If you are using R2014a or earlier, replace isgraphics() with ishandle()