NAME
    SetFont -- Set the text font and attributes in a rastport.

SYNOPSIS
    SetFont(rp, font)
            A1   A0

    void SetFont(struct rastport *, struct textfont *);

FUNCTION
    This function sets the font in the rastport to that described
    by font, and updates the text attributes to reflect that
    change.  This function clears the effect of any previous
    soft styles.

INPUTS
    rp   - the rastport in which the text attributes are to be changed
    font - pointer to a textfont structure returned from openfont()
           or opendiskfont()

RESULT

NOTES
    This function had previously been documented that it would
    accept a null font.  This practice is discouraged.
    o   Use of a rastport with a null font with text routines has
        always been incorrect and risked the guru.
    o   Keeping an obsolete font pointer in the rastport is no more
        dangerous than keeping a zero one there.
    o   SetFont(rp, 0) causes spurious low memory accesses under
        some system software releases.

    As of V36, the following Amiga font variants are no longer
    directly supported:
        fonts with NULL tf_CharSpace and non-NULL tf_CharKern.
        fonts with non-NULL tf_CharSpace and NULL tf_CharKern.
        fonts with NULL tf_CharSpace and NULL tf_CharKern with
            a tf_CharLoc size component greater than tf_XSize.
    Attempts to SetFont these one of these font variants will
    cause the system to modify your font to make it acceptable.

BUGS
    Calling SetFont() on in-code TextFonts (ie fonts not
    OpenFont()ed) will result in a loss of 24 bytes from
    the system as of V36.
    This can be resolved by calling stripfont().

SEE ALSO
    openfont()  stripfont()
    diskfont.library/opendiskfont()  graphics/text.h