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Go

Store One or More Flags on a Single Message

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Demonstrates the Chilkat Imap.StoreFlags method, which sets or clears one or more flags on a single message identified by ID. The first argument is the message ID, the second (bUid) selects UID vs sequence number, the third is a space-separated list of flag names, and the fourth is the value (1 to set, 0 to clear). This example applies the Seen and Flagged flags to one message by UID.

Background: StoreFlags is the single-message counterpart to SetFlags and lets you change several flags at once by listing them space-separated (without leading backslashes). Because the ID can be either a UID or a sequence number, the bUid argument must match how you obtained it — a UID from a UID search, or a sequence number from a sequence-based operation. UIDs are the safer choice since they remain valid as the mailbox changes.

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    success := false

    //  Demonstrates the Imap.StoreFlags method, which sets or clears one or more flags on a single
    //  message identified by ID.  The 1st argument is the message ID, the 2nd (bUid) selects UID
    //  vs sequence number, the 3rd is a space-separated list of flag names, and the 4th is the
    //  value (1 to set, 0 to clear).

    imap := chilkat.NewImap()

    imap.SetSsl(true)
    imap.SetPort(993)

    success = imap.Connect("imap.example.com")
    if success == false {
        fmt.Println(imap.LastErrorText())
        imap.DisposeImap()
        return
    }

    success = imap.Login("user@example.com","myPassword")
    if success == false {
        fmt.Println(imap.LastErrorText())
        imap.DisposeImap()
        return
    }

    success = imap.SelectMailbox("Inbox")
    if success == false {
        fmt.Println(imap.LastErrorText())
        imap.DisposeImap()
        return
    }

    //  Get the UIDs of all messages.
    msgSet := chilkat.NewMessageSet()
    success = imap.QueryMbx("ALL",true,msgSet)
    if success == false {
        fmt.Println(imap.LastErrorText())
        imap.DisposeImap()
        msgSet.DisposeMessageSet()
        return
    }

    if msgSet.Count() > 0 {
        //  Apply the Seen and Flagged flags to the first message.  bUid is true because the ID
        //  came from a UID search.
        uid := msgSet.GetId(0)
        success = imap.StoreFlags(uid,true,"Seen Flagged",1)
        if success == false {
            fmt.Println(imap.LastErrorText())
            imap.DisposeImap()
            msgSet.DisposeMessageSet()
            return
        }

        fmt.Println("Updated flags on UID ", uid)
    }

    success = imap.Disconnect()
    if success == false {
        fmt.Println(imap.LastErrorText())
        imap.DisposeImap()
        msgSet.DisposeMessageSet()
        return
    }


    imap.DisposeImap()
    msgSet.DisposeMessageSet()