Lua

Remove a Single Attachment from an Email

Demonstrates the Chilkat Email.DropSingleAttachment method, which removes the attachment at the specified zero-based index. Valid indexes run from 0 through NumAttachments - 1. This example adds two attachments, removes the first, and prints the count before and after.

Background: Attachments are addressed by a zero-based index, so the first is 0, the second 1, and so on. DropSingleAttachment removes just one — use it to prune a specific file (say, an oversized or unwanted attachment) while keeping the rest. Note that after a removal the remaining attachments shift down, so if you are deleting several by index, iterate from the highest index downward to avoid skipping any.

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Lua

local chilkat = require("chilkat")

-- Demonstrates the DropSingleAttachment method, which removes the attachment at the
-- specified zero-based index.

local email = chilkat.Email.new()
email.subject = "Drop a single attachment"

email:add_string_attachment("a.txt", "first attachment")
email:add_string_attachment("b.txt", "second attachment")
print("NumAttachments before = " .. email.num_attachments)

-- Remove the attachment at index 0 (the first attachment).
email:drop_single_attachment(0)

print("NumAttachments after = " .. email.num_attachments)