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Unicode C++ Examples

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(Unicode C++) MIME Content-Disposition Header Field

Explains the Content-Disposition header field and the properties used for setting or updating.

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#include <CkMimeW.h>

void ChilkatSample(void)
    {
    //  The Content-Disposition header field provides a suggestion to the receiver for how the content is to be processed.
    //  The standard dispositions are "inline" and "attachment".

    //  A disposition of "attachment" indicates the content is something to be saved to a file and not processed (such as rendering for viewing inline).
    //  A disposition of "inline" indicates the content should be processed (displayed) inline with the other parts of the MIME message.

    //  For example, an email client could handle a JPG image based on the disposition.  If the disposition is "attachment",
    //  the email client (such as Thunderbird, GMail, or Outlook) might simply list the JPG image as one of the email's attachments,
    //  but won't display the JPG image.  If the disposition is "inline", the email client might display the JPG image, but not list
    //  it as an attachment.

    //  The Content-Disposition header field can also include a "filename" attribute.  This is the suggested default filename if the content
    //  is to be saved to a file.

    bool success;
    CkMimeW mime;

    //  The Content-Disposition header field can be set or modified in two ways.
    //  1) By setting the Disposition and Filename properties.

    //  2) By setting the entire contents of the Content-Disposition header with the SetHeaderField method.
    //     Setting the Content-Disposition header automatically updates the Disposition and Filename properties.

    //  For example:
    mime.put_Disposition(L"attachment");
    mime.put_Filename(L"ghost.jpg");

    //  The Content-Disposition header field contains this:
    //      Content-Disposition: attachment; filename="ghost.jpg"
    wprintf(L"%s\n",mime.getEntireHead());
    wprintf(L"-\n");

    //  If we set the entire header field..
    mime.SetHeaderField(L"Content-Disposition",L"attachment; filename=\"zombie.jpg\"");
    //  The Content-Disposition header field now contains this:
    //      Content-Disposition: attachment; filename="zombie.jpg"
    wprintf(L"%s\n",mime.getEntireHead());
    wprintf(L"-\n");

    //  Notice how the Filename property has been updated
    wprintf(L"Filename property: %s\n",mime.filename());
    wprintf(L"-\n");

    //  To change a particular attribute value, set the property.
    mime.put_Filename(L"skeleton.jpg");
    wprintf(L"%s\n",mime.getEntireHead());
    wprintf(L"-\n");

    //  To remove the filename from the Content-Disposition header,
    //  set the property to an empty string.
    mime.put_Filename(L"");
    wprintf(L"%s\n",mime.getEntireHead());
    wprintf(L"-\n");
    }

 

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