C++

Set the Content-Disposition of an Attachment

Demonstrates the Chilkat Email.SetAttachmentDisposition method, which sets the Content-Disposition value for the attachment at a given zero-based index. The default disposition is attachment. This example changes an attachment's disposition to inline.

Background: The Content-Disposition header hints how a client should present a part: attachment means "offer it as a download," while inline means "display it within the message" (as an email client does with an embedded image). Setting it lets you control that behavior — though clients ultimately decide how to honor the hint.

Chilkat C++ Downloads

Download Chilkat for C++

C++

#include <CkEmail.h>

void ChilkatSample(void)
    {
    bool success = false;

    //  Demonstrates the SetAttachmentDisposition method, which sets the Content-Disposition
    //  value for the attachment at the given zero-based index.  The default disposition is
    //  "attachment".

    CkEmail email;
    email.put_Subject("Set attachment disposition");

    email.AddStringAttachment("image.txt","(pretend inline content)");

    //  Set the disposition of the first attachment (index 0) to "inline".
    success = email.SetAttachmentDisposition(0,"inline");
    if (success == false) {
        std::cout << email.lastErrorText() << "\r\n";
        return true;
    }

    //  The attachment's Content-Disposition is now "inline".
    std::cout << email.getMime() << "\r\n";
    }