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…
If you use Adobe Reader X it is possible you can't open OLE PDF documents in the standard.
The reason is the 'save box mode' in adobe reader X.
Many people think the protected Mode of adobe reader x is only to stop the write access.
But this fe…