(MFC) Set the Email Date Header to the Current System Date/Time

Demonstrates how to set the Date header field of an email to the computer's current date/time. Note: When an email object is instantiated, the Date header field is automatically added and initialized to the current system date/time. The need to explicitly set the Date header could arise when loading an email from a .eml.

Chilkat C/C++ Library Downloads MS Visual C/C++ Libs

See Also: Using MFC CString in Chilkat

#include <CkEmail.h>
#include <CkDateTime.h>

void ChilkatSample(void)
    {
    CkString strOut;

    CkEmail email;

    // At this point, a new email object has been instantiated, and it
    // already has a Date header field containing the current date/time.
    strOut.append("Date: ");
    strOut.append(email.emailDateStr());
    strOut.append("\r\n");

    // We can also get the Date header like this:
    strOut.append("Date: ");
    strOut.append(email.getHeaderField("Date"));
    strOut.append("\r\n");

    // Load a .eml into the email object:
    bool success = email.LoadEml("myEmlFiles/someEmail.eml");
    if (success != true) {
        strOut.append(email.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    // Show the Date that was in the .eml
    strOut.append("Date: ");
    strOut.append(email.emailDateStr());
    strOut.append("\r\n");

    // Now the Date header contains whatever was in the .eml
    // Let's update it to the current system date/time..

    CkDateTime dateTime;

    dateTime.SetFromCurrentSystemTime();

    success = email.SetDt(dateTime);
    if (success != true) {
        strOut.append(email.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    // Now show that the Date is the current system time:
    strOut.append("Date: ");
    strOut.append(email.emailDateStr());
    strOut.append("\r\n");
    strOut.append("Date: ");
    strOut.append(email.getHeaderField("Date"));
    strOut.append("\r\n");


    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

    }