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Richard
Posts:
3
Registered:
11/6/09
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Re: GUI Current pointer location on displayed image
Posted:
Nov 6, 2009 7:34 PM
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"Richard " <rjtennant@greeneridge.com> wrote in message <hcvctn$4qa$1@fred.mathworks.com>...
> Ran into a little problem with my GUI program today. I would like eventually to create lines and boxes on top of a displayed image. Any help or reference to websites or functions would be much appreciated.
>
> Here's what I did if you are trying to recreate the problem. Using guide create an axes tagged as Picture. Then in the m-editor under the function that executes before figure is made visible, display a jpeg on the axes...
>
> axes(handles.Picture)
> image(imread('Picture.jpg')) %loads and displays Picture.jpg
>
> Now I want to set up a click-able box using ButtonDownFcn or WindowButtonDownFcn(preferably the previous ButtonDownFcn) , WindowMotionFcn and WindowButtonUpFcn.
>
> I run into a problem with getting my mouse position on the image,
> "There is no 'CurrentPoint' property in the 'image' class"
> Seems like there should be a way of getting mouse location without ginput for an image because you can do it for a normal plot...
> I'm using 2007b btw
I am pretty new to OOP and GUI programming and after a day more of research, I found a workable solution. The point was realizing that the image was a child of the figure and the only child in this case, so get(get(gcf,'Children'),'CurrentPoint') gave me the current mouse position. Hope this helps someone!
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