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How can functions in a C DLL call methods/functions in the calling application.For example: a method called fnAdd(..) which resides in a DLL neeeds to take dynamic data from the user( interaction with the user ). Is it possible by passing to the dll a function name ( this function can be called by using the win api GetProcAddress )which it can call to take new data from the user. <br />
Is there a specific way to pas such function names ?<br />

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How can functions in a C DLL call methods/functions in the calling application.For example: a method called fnAdd(..) which resides in a DLL neeeds to take dynamic data from the user( interaction with the user ). Is it possible by passing to the dll a function name ( this function can be called by using the win api GetProcAddress )which it can call to take new data from the user. 
Is there a specific way to pas such function names ?


Callback functions ?

C is a general-purpose, imperative computer programming language, supporting structured programming, lexical variable scope and recursion, while a static type system prevents many unintended operations. By design, C provides constructs that map efficiently to typical machine instructions, so it has found lasting use in applications that had formerly been coded in assembly language, including operating systems as well as various application software for computers ranging from supercomputers to embedded systems. It is distinct from C++ (which has its roots in C) and C#, and many later languages have borrowed directly or indirectly from C.