PureBasic

Set a Preferred Charset for an Email

Demonstrates the Chilkat Email.PreferredCharset property. It applies only when building an email with non-English characters where the charset has not been explicitly set. Chilkat normally auto-selects a default charset per language (Chinese gb2312, Japanese shift_JIS, Korean ks_c_5601-1987, Thai windows-874, others iso-8859-*), and this property lets you steer that choice — for example choosing iso-2022-jp for Japanese. It is a preference, not a forced conversion: if the preferred charset cannot represent the text, it is ignored. This example sets a preferred charset.

Background: A single language often has several legacy charsets — Japanese, for instance, can be encoded as shift_JIS, euc-jp, or iso-2022-jp. Some mail environments expect one particular encoding, so PreferredCharset lets you nudge Chilkat toward it. Contrast this with the Charset property, which forces a specific charset: PreferredCharset is only a hint that Chilkat honors when it fits.

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IncludeFile "CkEmail.pb"

Procedure ChilkatExample()

    ;  Demonstrates the Email.PreferredCharset property.  It only applies when building an
    ;  email that contains non-English characters and no charset is explicitly set.  Chilkat
    ;  will prefer this charset if it can represent the email's text; otherwise it is ignored.

    email.i = CkEmail::ckCreate()
    If email.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    CkEmail::setCkSubject(email, "Preferred charset example")
    CkEmail::setCkBody(email, "Japanese text would go here.")

    ;  Prefer iso-2022-jp instead of the default shift_JIS for Japanese text.
    CkEmail::setCkPreferredCharset(email, "iso-2022-jp")

    Debug "PreferredCharset = " + CkEmail::ckPreferredCharset(email)


    CkEmail::ckDispose(email)


    ProcedureReturn
EndProcedure