(Unicode C++) Async Upload (Append) Email to an IMAP Mailbox

Use the AppendMailAsync method call to append an email to an IMAP mailbox.

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#include <CkImapW.h>
#include <CkEmailW.h>
#include <CkTaskW.h>

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

    CkImapW imap;

    // Connect to an IMAP server.
    // Use TLS
    imap.put_Ssl(true);
    imap.put_Port(993);
    bool success = imap.Connect(L"MY-IMAP-DOMAIN");
    if (success != true) {
        wprintf(L"%s\n",imap.lastErrorText());
        return;
    }

    // Login
    success = imap.Login(L"MY-IMAP-LOGIN",L"MY-IMAP-PASSWORD");
    if (success != true) {
        wprintf(L"%s\n",imap.lastErrorText());
        return;
    }

    // Create a simple email with 2 recipients.
    CkEmailW email;
    email.put_From(L"support@chilkatsoft.com");
    email.AddTo(L"Chilkat Sales",L"sales@chilkatsoft.com");
    email.AddTo(L"Chilkat GMail",L"chilkat.support@gmail.com");
    email.put_Body(L"This is a test email.");
    email.put_Subject(L"This is a test email.");

    // Imagine we've sent this email via SMTP, and now we want to 
    // save the email to our "Sent" mailbox.  On GMail, the mailbox name
    // for sent email is "[Gmail]/Sent Mail".

    // Call the async version of the AppendMail method to return a task object.
    CkTaskW *task = imap.AppendMailAsync(L"[Gmail]/Sent Mail",email);
    if (imap.get_LastMethodSuccess() != true) {
        wprintf(L"%s\n",imap.lastErrorText());
        return;
    }

    // Schedule the task for running on the thread pool.  This changes the task's state
    // from Inert to Live.  The task is now running...
    success = task->Run();
    if (success != true) {
        wprintf(L"%s\n",task->lastErrorText());
        delete task;
        return;
    }

    // -------------------------------------------------------------------------------
    // The following is a general note that applies to all programming languages:
    // -------------------------------------------------------------------------------
    // Your application can keep a reference to the task object and periodically check back later to see if it's finished.
    // If your programming language is one that supports callbacks, then the TaskCompleted callback can
    // be setup to be called when the task completes.  (See the "Async" category on example-code.com for more information.)
    // 
    // NOTE: This is very important:  A TaskCompleted callback runs in the background thread.  
    // (All callbacks from an async task, such as AbortCheck, PercentDone, ProgressInfo, etc. are in the background thread.) 
    // An application that uses TaskCompleted must be very careful.  
    // For example, user interface elements (such as labels, text boxes, etc.) may not be directly
    // accessible from a background thread, and could crash the application if directly accessed.  Also, attempting to debug
    // code running in a background thread from an IDE, especially an older IDE (such as VB6) is likely to crash the IDE.
    }