(C++) Delete All IMAP Email

Demonstrates two ways to delete all email in a mailbox on an IMAP server.

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#include <CkImap.h>
#include <CkMessageSet.h>

void ChilkatSample(void)
    {
    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkImap imap;

    // Turn on session logging:
    imap.put_KeepSessionLog(true);

    // Connect to an IMAP server.
    // Use TLS
    imap.put_Ssl(true);
    imap.put_Port(993);
    bool success = imap.Connect("imap.someMailServer.com");
    if (success != true) {
        std::cout << imap.lastErrorText() << "\r\n";
        return;
    }

    // Login
    success = imap.Login("myLogin","myPassword");
    if (success != true) {
        std::cout << imap.lastErrorText() << "\r\n";
        return;
    }

    // Select an IMAP mailbox
    success = imap.SelectMailbox("Inbox.RubyMail");
    if (success != true) {
        std::cout << imap.lastErrorText() << "\r\n";
        return;
    }

    CkMessageSet *messageSet = 0;

    // Get the complete set of Uids for email in the selected mailbox.
    messageSet = imap.GetAllUids();
    if (imap.get_LastMethodSuccess() != true) {
        std::cout << imap.lastErrorText() << "\r\n";
        return;
    }

    // Set the Deleted flag for each message.
    // (ExpungeAndClose must be called to finalize the delete.)
    success = imap.SetFlags(*messageSet,"Deleted",1);
    if (success != true) {
        std::cout << imap.lastErrorText() << "\r\n";
        return;
    }

    // Alternatively, the Deleted flag may be set for each UID
    // individiually, but this is less efficient:
    int i;
    int n = messageSet->get_Count();
    for (i = 0; i <= n - 1; i++) {
        success = imap.SetFlag(messageSet->GetId(i),messageSet->get_HasUids(),"Deleted",1);
        if (success != true) {
            std::cout << imap.lastErrorText() << "\r\n";
            return;
        }

    }

    // Expunge and close the mailbox.
    success = imap.ExpungeAndClose();
    if (success != true) {
        std::cout << imap.lastErrorText() << "\r\n";
        return;
    }

    // Display the session log.
    std::cout << imap.sessionLog() << "\r\n";

    // Disconnect from the IMAP server.
    success = imap.Disconnect();

    delete messageSet;
    }