Zig

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.

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Zig

const std = @import("std");
const chilkat = @import("chilkat");

pub fn main(init: std.process.Init) !void {
    const alloc = init.arena.allocator();

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

    const email = try chilkat.Email.init();
    defer email.deinit();
    email.setSubject("Set attachment disposition");

    email.addStringAttachment("image.txt", "(pretend inline content)") catch {};

    // Set the disposition of the first attachment (index 0) to "inline".
    email.setAttachmentDisposition(0, "inline") catch {
        std.debug.print("{s}\n", .{try email.getLastErrorText(alloc)});
        return;
    };

    // The attachment's Content-Disposition is now "inline".
    std.debug.print("{s}\n", .{try email.getMime(alloc)});
}