Mouse Click callback on an image - temporarily disable

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Jason
Jason 2019-8-14
评论： Jason 2019-8-14
Hello, I have a GUI (created by guide) where everytime I load an image and display in an axes component I assign a button down function (called ImageClickCallback) so everytime I click on the image my function ImageClickallback executes. This all works fine.
axes(handles.axes1)
imageHandle=imshow(img,[low,high]); % Display Image
set(imageHandle,'ButtonDownFcn',@ImageClickCallback); % Assign callback to ButtonDown event
I am wanting to now use a mouse click on the image to draw lines (I know how to do this) but everytime I click the image the original ImageClickCallback executes. So my question is can I pause the original ButtonDownFcn callback ?
Thanks

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Geoff Hayes
Geoff Hayes 2019-8-14
Jason - why not just remove the original callback just prior to wanting to draw the lines
set(imageHandle,'ButtonDownFcn',[]);
You could then restore it later when needed.
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Geoff Hayes
Geoff Hayes 2019-8-14
The problem might be because of the trailing space character in the string
'ButtonDownFcn '
Try replacing with
set(handles.imH,'ButtonDownFcn',[]);

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