Specifies that a function or variable must not be dead-stripped.
__declspec(force_export) function-declaration ;
__declspec(force_export) variable-declaration ;
When the linker determines that a function or static variable is not referred to by the rest of the program, the linker removes the object from the final executable image. The linker does not remove a static variable or function declared with this specification even if this object is not referred to.