Exporting symbols in a .exe for external DLLs

Question

Hello, 
I am facing a strange problem.
Basically, I have my application that loads a DLL (I developped).
My DLL exports functions I can call from my application : OK
I would also like to call functions of my application from my DLL : it does not work.
To do that, in my DLL, I call :
HMODULE hModule = GetModuleHandle("application.exe");
FARPROC hFunc = GetProcAddress(hModule, "appFunction"); // (defined by : void __declspec(dllexport)  appFunction(void) in my application
hModule is non-zero but hFunc is NULL. When I use a tool to see exported symbols by application.exe, there is none.
So my question is : Can I export symbols from a .exe with LabWindows 8.5 ?
thanks in advance
Solved!
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Answer 1

Thank you for your answer,
I had already tried with :
HMODULE hModule = LoadLibrary("application.exe");  
and
HMODULE hModule = LoadLibraryEx("application.exe", NULL, 0);  
it gives the same result.
To be more precise here is the source code of dll.dll :
#include <Windows.h>
#include <stdio.h>
typedef void(*APPLI_PRINTF7)(void);
__declspec(dllexport) void dllFunction(void)
HMODULE hModule = LoadLibrary("application.exe");
FARPROC pFunc = GetProcAddress(hModule, "appli_printf7");
if(pFunc)
((APPLI_PRINTF7)pFunc)();
else
printf("error = %d\n", GetLastError());
return;
 and here is the code of application.exe
#include <Windows.h>
#include <stdio.h>
typedef void(*DLL_FUNC)(void);
__declspec(dllexport) void appli_printf7(void)
printf("7");
return;
int main(void)
HMODULE hModule = LoadLibrary("dll.dll");
FARPROC pFunc = GetProcAddress(hModule, "dllFunction");
((DLL_FUNC)pFunc)();
return 0;
I compiled dll.dll once and for all with LabWindows (8.5), and I compiled exactly the same code for application.exe with LabWindows (8.5) and Visual Studio 2013.
It works with Visual Studio (the dll finds appli_printf7 and 7 is printed on the screen), but doesnt with LabWindows (the dll does not find appli_printf7 and prompt the error 127 (The specified procedure could not be found.)).
I used Dependency Walker (and dllexp to confirm) to find out that appli_printf7 is actually NOT exported with LabWindows, and is exported with Visual Studio.
Therefore, it is normal that the dll can't find the symbol if it is not exported.
My questions are :
- Why is that so ???
- Is there a setting to set in order to make LabWindows export symbols marked by __declspec(dllexport) for .exe projects ?
- Is this a problem fixed with a newer version of LabWindows ?
- My dll is actually a plugin to my application. If I can't load symbols from my application, how can I provide an API for my dll in order to make generic functions available to it ? Is there a workaround for it ?
Edit : I tried with LabWindows 2012, same problem..
Thanks in advance