I am use a SDI app that has Data that is stored in a class that is called in CMyDoc. I've added a tab control to my app using an example that I found at http://www.codersource.net/mfc_ctabctrl.html
. Before I added the tab, I viewed and edited my data in CMyView and when I opened my Data file or opened new, they worked. When I added the tab control and used it to manipulate the data in the tabs, my open new and open file stopped working. I need help finding out why.
Whenever I open new or open existing, I get a debug assertion failure on file wincore.cpp line 628.