Extern function definition (BASS-Lib Call)

Okay, in windows I get an unexceptional memory error evertyime I use a callback function. With I hack it into your glue.cpp everything works fine (weird...)

void CALLBACK downproc(const void * buffer, DWORD length, void * user)
{
    if (!file) file=fopen("test.mp3", "wb"); // create the file
    if (!buffer) fclose(file); // finished downloading
    else fwrite(buffer, 1, length, file);
}

HSTREAM bmx_bass_streamcreateurlncb( char *url, DWORD offset, DWORD flags, void *user) {
	// return BASS_StreamCreateURL(url, offset, flags, NULL, user);
	return BASS_StreamCreateURL(url, offset, flags, &downproc, user);
}