-voidpf ZCALLBACK win32_open_file_func OF((voidpf opaque, const char* filename, int mode));
-uLong ZCALLBACK win32_read_file_func OF((voidpf opaque, voidpf stream, void* buf, uLong size));
-uLong ZCALLBACK win32_write_file_func OF((voidpf opaque, voidpf stream, const void* buf, uLong size));
-ZPOS64_T ZCALLBACK win32_tell64_file_func OF((voidpf opaque, voidpf stream));
-long ZCALLBACK win32_seek64_file_func OF((voidpf opaque, voidpf stream, ZPOS64_T offset, int origin));
-int ZCALLBACK win32_close_file_func OF((voidpf opaque, voidpf stream));
-int ZCALLBACK win32_error_file_func OF((voidpf opaque, voidpf stream));
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