Using WindowButtonMotionFcn with getrect / getline
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Hi,
I'm using a 'WindowButtonMotionFcn' callback on a figure to continually display the current position (in pixel and map coords) as the mouse moves over an image. This works just fine.
The problem I'm having, however, is that my GUI allows the user to specify a region of interest either as a rectangle (via getrect) or as a polygon (via getline). While the user is performing either of these operations my WindowButtonMotionFcn callback is no longer being triggered so the current position is no longer updated.
What steps are required to ensure that my callback continues to be triggered while using getrect / getline?
Thanks in advance for any replies.
-- Dan
回答（3 个）
Image Analyst
2012-4-6
0 个投票
I don't use the WindowButtonMotionFcn at all. I just set up impixelinfo(). However even that won't work when you're calling getrect() so I think you're out of luck as far as getting "live" coordinates while drawing the box.
2 个评论
Dan
2012-4-6
Image Analyst
2012-4-6
It might help somewhat if you call "axis on" right after you display your image.
Walter Roberson
2012-4-6
0 个投票
Please see http://www.mathworks.com/matlabcentral/answers/2005-windowkeypressfcn-and-datacursormode-on as I suspect the mechanism is the same: zap a listener temporarily.
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