When using a checkbox in a GUI how do i undo the effects of the Checkbox

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Luke Dineen-Woolnough
评论： Luke Dineen-Woolnough 2016-3-3
I'm developing a GUI to with a loaded image, and a check-box which applies a filter, to the image. How can I get the image to become unfiltered when the checkbox is unticked is there a way of assigning a function to checking the box and assigning a function to unchecking the box?
Kind regards
Luke

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Adam
Adam 2016-3-3
编辑：Adam 2016-3-3
Use a switch or if statement in the callback. That is the standard method I use for dealing with radio buttons or checkboxes. You have to check the state of the checkbox anyway to know if it has been switched 'on' or 'off' so it is just a case of programming the 'off' branch in addition to the 'on' branch.
Certainly within that switch/if statement it is better to just delegate the functionality to different functions for the different branches rather than just plonk all the code directly into the callback though.
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Luke Dineen-Woolnough
Luke Dineen-Woolnough 2016-3-3
Thank You Very Much, Ive used an If Statement that refers to the same code, when switched on as switched off, however the switched on code includes the filter process.
Works Perfectly
Thank You!

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