Multiple UNDO in gui

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Nidhi SRIVASTAVA
Nidhi SRIVASTAVA am 27 Jul. 2017
Kommentiert: Walter Roberson am 31 Jul. 2017
I am working on guide. I wish to undo the values of the GUI multiple times. I could undo the values one time. Now I am looking for ways to undo it multiple times. If anybody could suggest me something, it will be really helpful. Thank you

Antworten (1)

Shruti Shivaramakrishnan
Shruti Shivaramakrishnan am 31 Jul. 2017
You could store the values that are being modified in a structure and "undo" them by removing it from the structure. This new updated value could be the previous value being displayed.
  1 Kommentar
Walter Roberson
Walter Roberson am 31 Jul. 2017
I was thinking of ways to track the changes one by one, find the previous version of the value, restore that. But now I realize that probably far easier would be to have a struct array that has all of the values; every time you make a change, clone the last entry in the struct, make the change there, and add that on the end of the struct. You would use this in conjunction with a routine that took the struct array, extracted the last entry, and set all of the various controls and displays appropriately.

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