Remove a Part from a Multipart MIME Entity

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Demonstrates the Chilkat Mime.RemovePart method, which removes the direct child at a zero-based index. The only argument is the index; valid values are 0 through NumParts - 1. An out-of-range index returns false and changes nothing.

Note: The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background: Removing a part is how you strip an attachment or drop an unwanted alternative when reprocessing a message. Because parts are addressed by position, be mindful that removing one shifts the indexes of those after it — when deleting several, iterate from the last index downward so earlier removals do not renumber the parts you still intend to remove.

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#include <C_CkMime.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkMime mime;
    int lastIndex;

    success = FALSE;

    mime = CkMime_Create();
    success = CkMime_LoadMimeFile(mime,"qa_data/multipart_message.eml");
    if (success == FALSE) {
        printf("%s\n",CkMime_lastErrorText(mime));
        CkMime_Dispose(mime);
        return;
    }

    //  Remove the direct child part at a zero-based index.  Valid indexes are 0 through NumParts - 1.
    //  Here the last part is removed.
    lastIndex = CkMime_getNumParts(mime) - 1;
    success = CkMime_RemovePart(mime,lastIndex);
    if (success == FALSE) {
        printf("%s\n",CkMime_lastErrorText(mime));
        CkMime_Dispose(mime);
        return;
    }

    printf("Parts remaining: %d\n",CkMime_getNumParts(mime));


    CkMime_Dispose(mime);

    }