I am trying to wrap a very old dll from Epson with a Managed Dll.
Their declaration for the callback is this:

typedef int (WINAPI* DLL_BiSetStatusBackFunction)(int, int (CALLBACK EXPORT
*pStatusCB)(DWORD dwStatus));

but when I compile it, I get the following errors:

Error    1    error C2143: syntax error : missing ')' before
'*'    c:\lennys\alvordtech\posprinter\posprinter\POSPrinter.h    48   
Error    2    error C2143: syntax error : missing ',' before
'*'    c:\lennys\alvordtech\posprinter\posprinter\POSPrinter.h    48   
Warning    3    warning C4229: anachronism used : modifiers on data are
ignored    c:\lennys\alvordtech\posprinter\posprinter\POSPrinter.h    48   
Error    4    error C2059: syntax error :
')'    c:\lennys\alvordtech\posprinter\posprinter\POSPrinter.h    48   
Error    5    error C2091: function returns
function    c:\lennys\alvordtech\posprinter\posprinter\POSPrinter.h    48   

Obviously, the syntax has changed.
All of the non-callback functions are declared as follows:

typedef int (WINAPI* DLL_BiOpenMonPrinter)(int, LPSTR);
typedef int (WINAPI* DLL_BiSetMonInterval)(int, WORD, WORD);

These work fine when I use LoadLibrary and GetProcAddress.
Does anyone know the proper syntax for the callback?

Steve
Microsoft Certified Partner