I am trying to use the following line of code to increment the value of a
column.
(*item_iter)[m_Columns->m_value] = (*item_iter)[m_Columns->m_value]
+ 1;
item_iter is an iter and m_Columns is a set of columns in the TreeModel.
My probelm is that his works on the first occasion and then the iter becomes
invalid. What code do I need to use to make the iter persist ?
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