dll

[ikcha]

this exported works in vb6. it probably works in c++ if <windows.h> is included. is it possible to make it work in c++ Exe without <windows.h>.

BSTR __declspec(dllexport) CALLBACK StringTest(BSTR StrVal)
{
	char Str[100];
	//fill Str with StrVal, do other things
	char *Ret = Str;
	return SysAllocString((BSTR)Ret);
}

[JamesSchumacher]

// Answer is NO, reason is below
// LoadLibrary would be required and that requires <windows.h>

typedef BSTR (APIENTRY * PFN_SysAllocString)(const OLECHAR *);

HANDLE hLibrary = ::LoadLibrary("oleaut32.dll");

if (hLibrary != 0)
{
    PFN_SysAllocString pfnFunc = (PFN_SysAllocString)::GetProcAddress(hLibrary,"SysAllocString"); // "SysAllocStringW" "SysAllocStringA" ?

    if (pfnFunc != 0)
    {
        BSTR bStr = (*pfnFunc)(oleCharPointer);
    }
}

::FreeLibrary(hLibrary);