......... unresolved external symbol, the symbol is referenced in the function .........
In the process we knock code, we occasionally encounter this problem, the problem is most of all because of your own program in question, rather than the appropriate library file is missing. Man of few words said, directly look at an example:
In the information given above, we can see a bunch of symbols see not understand, those are not important,
mainly to see the unresolved external symbol : D3DApp :: ~ D3DApp (void) ; This function appeared in general are question, please be sure to carefully view the function of the realization there is no problem.
There may be you define this function did not realize it, this is generally not at compile time error prompt, because it is consistent syntax, but will build to fail. I am here because I introduced another project file, but did not add files to this project, it causes the compiler can not find the definition of the function I call this function.