Sharing a global/static variable between a process and DLL

Question

I\'d like to share a static/global variable only between a process and a dll that is invoked by the process. The exe and dll are in the same memory address space. I don\'t w

Answer 1

I have seen many answers to this question and since it is a bit tricky and unclear I would like to bring the following scenario. We want to share a global variable between a DLL and a main program, and also allow access to this variable from different modules in the DLL and in the main program.

The variable is a BOOL indicating if the program should continue running or stop. The variable name is ShouldRun;

In the main program we need to put:

__declspec(dllexport)  bool ShouldRun;

In the DLL's main module we need to put:

extern "C" BOOL __declspec(dllexport) ShouldRun = TRUE;

In any other module inside the DLL project we will use:

extern  "C" BOOL ShouldRun;