VS2010 0xC000041D: Unhandled exception encountered during user callback

Problem description:
In the process of the callback function, the following problem occurred before entering the body of the callback function. I was very depressed, so I started to find a solution.
The method adopted is as follows:
1. Check whether it is defined There are no uninitialized pointer variables;
2. During the debugging process, observe whether the names of local variables appear in red, and investigate slowly;

3. Comment all the codes and debug line by line to see if the problem is where.