微软的Vista的credential provider的CredUI示例。此示例演示在Vista登陆时的LogonUI替换和验证用户时CredUI替换。初学开发Vista登陆界面替换的可以参考，代码清晰规范。-the credential provider of CredUI example. This example demonstrated in Vista LogonUI landing at the replacement and verify users CredUI replacement. Beginners development Vista landing interface can replace the reference code clear norms.