public static extern int MsiGetFileHash(string filePath, uint options, MSIFILEHASHINFO hash);
public static extern void CreateCabAddFile(string file, string token, MSIFILEHASHINFO fileHash, IntPtr contextHandle);
public static extern int MsiGetFileHash(string filePath, uint options, MSIFILEHASHINFO hash);
public static extern void CreateCabAddFile(string file, string token, MSIFILEHASHINFO fileHash, IntPtr contextHandle);