インターネットトランスファ（inet）コントロールのResponseCode

MSDNで、「インターネット トランスファ (Inet) コントロールのトラップできるエラー」という記事に、7、10、13、380、35750〜35937までは載ってるのだが、12000番台の謎のエラー群が存在する模様。そのときのResponseInfoを見てみればだいたい意味はわかるが一覧にしてみるとだいたい以下のような感じになるらしい。

Private Function TranslateErrorCode(ByVal lErrorCode As Long) As String
    Select Case lErrorCode
        Case 0
        Case 12001: TranslateErrorCode = "No more handles could be generated at this time"
        Case 12002: TranslateErrorCode = "The request has timed out."
        Case 12003: TranslateErrorCode = "An extended error was returned from the server."
        Case 12004: TranslateErrorCode = "An internal error has occurred."
        Case 12005: TranslateErrorCode = "The URL is invalid."
        Case 12006: TranslateErrorCode = "The URL scheme could not be recognized, or is not supported."
        Case 12007: TranslateErrorCode = "The server name could not be resolved."
        Case 12008: TranslateErrorCode = "The requested protocol could not be located."
        Case 12009: TranslateErrorCode = "A request to InternetQueryOption or InternetSetOption specified
          an invalid option value."
        Case 12010: TranslateErrorCode = "The length of an option supplied to InternetQueryOption or
          InternetSetOption is incorrect for the type of option specified."
        Case 12011: TranslateErrorCode = "The request option can not be set, only queried. "
        Case 12012: TranslateErrorCode = "The Win32 Internet support is being shutdown or unloaded."
        Case 12013: TranslateErrorCode = "The request to connect and login to an FTP server could not be
          completed because the supplied user name is incorrect."
        Case 12014: TranslateErrorCode = "The request to connect and login to an FTP server could not be
          completed because the supplied password is incorrect. "
        Case 12015: TranslateErrorCode = "The request to connect to and login to an FTP server failed."
        Case 12016: TranslateErrorCode = "The requested operation is invalid. "
        Case 12017: TranslateErrorCode = "The operation was canceled, usually because the handle on which the request
          was operating was closed before the operation completed."
        Case 12018: TranslateErrorCode = "The type of handle supplied is incorrect for this operation."
        Case 12019: TranslateErrorCode = "The requested operation can not be carried out because the handle supplied
          is not in the correct state."
        Case 12020: TranslateErrorCode = "The request can not be made via a proxy."
        Case 12021: TranslateErrorCode = "A required registry value could not be located. "
        Case 12022: TranslateErrorCode = "A required registry value was located but is an incorrect type or has
          an invalid value."
        Case 12023: TranslateErrorCode = "Direct network access cannot be made at this time. "
        Case 12024: TranslateErrorCode = "An asynchronous request could not be made because a zero context value
          was supplied."
        Case 12025: TranslateErrorCode = "An asynchronous request could not be made because a callback function has
          not been set."
        Case 12026: TranslateErrorCode = "The required operation could not be completed because one or more requests
          are pending."
        Case 12027: TranslateErrorCode = "The format of the request is invalid."
        Case 12028: TranslateErrorCode = "The requested item could not be located."
        Case 12029: TranslateErrorCode = "The attempt to connect to the server failed."
        Case 12030: TranslateErrorCode = "The connection with the server has been terminated."
        Case 12031: TranslateErrorCode = "The connection with the server has been reset."
        Case 12036: TranslateErrorCode = "The request failed because the handle already exists."
        Case Else: TranslateErrorCode = "Error details not available."
    End Select
End Function

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