Load and Save to file, Document-View interaction inside the SDI.
Continuing from the second article about sudoku.
Open the project in visual studio.
From the class view select CSudokuDoc and double click to open the header …
The undo support, implementing a stack.
Continuing from the eigth article about sudoku.
We need a mechanism to keep track of the digits entered so as to implement an undo mechanism. This should be a ‘Last In First Out’ collec…