How to move up or down Item in List using C and GList (Doubly-Linked Lists) code
In abstraction I know what should be done, but in practice not handle it.
For down button:
When select a List Item click on Move Down
That time get the Current Index of the Selected List Item
Then remove the item from the Selected Index
And add the same Item object by Insert with Previous Selected Index + 1
Thanks.
So you have a doubly linked list, say
1 <-> 2 <-> 3 <-> 4 <-> 5
And if you were pointing at 3, to move it down one place, you would end up with
1 <-> 2 <-> 4 <-> 3 <-> 5
If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
If at first you don't succeed, try writing your phone number on the exam paper.
Have a look at
Linked Lists in C Tutorial - Cprogramming.com
Singly linked list - insert, remove, add, count source code - Cprogramming.com
You should be able to work it out from there
Fact - Beethoven wrote his first symphony in C
