Dear JNA users,

Hello I'm newbie in C and JNA. I've tried to map function LoadLibrary &
GetProcAddress in kernel32.dll. LoadLibrary was mapped successfully.

HINSTANCE LoadLibrary(String pctstr);

But, when GetProcAddress executed, it returned null value. The code below is the snipped c code of GetProcAddress :

FARPROC WINAPI GetProcAddress( __in HMODULE hModule, __in LPCSTR lpProcName );

And I have mapped it in Java:

FARPROC GetProcAddress(HINSTANCE hInstance, String str);

It returned null value. If i call GetLastError, it says that
ERROR_PROC_NOT_FOUND (error code: 0x7f). I'm sure that I have put the correct
parameter to call it. I do not know how to solve this problem. Any help please?