delete drawn shape from image

2011 6 2
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更新时间：2021 1 5
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hi,
I have drawn several ellipses using imellipse instruction on an image in a figure. when i choose one of those ellipses and wanna delete it using 'delete' key, it doesn't work. how can i do it? tnx

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Walter Roberson
Walter Roberson 2011-6-2

1 个投票

gco() should return the handle of the currently selected object. Selecting is just a matter of clicking (once) on the object. Recognizing the delete key would be done by setting KeyPressFcn callback for the figure: be sure to check the event data to be sure the proper key was pressed. It might also be a good idea to get() the Type of the current object and check it, so that you only delete the kind of objects you want.

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Sean de Wolski
Sean de Wolski 2011-6-2

0 个投票

H = imellipse(...);
delete(H);

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mary
mary 2011-6-2
tnx for your reply,
but i have loaded an image in a figure, and drawn more than one ellipses on it.now a user should select one of them and after pressing delete key it must be deleted.
i don't know how to write the code of selecting and getting the input key by user.
tnx

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