How do you display 2-byte fonts with Xlib?

From: Nobody (nobody_at_nowhere.com)
Date: 02/29/04 

Date: 29 Feb 2004 15:58:18 -0600

Are there any Xlib programming gurus out there? I'm working through the
"Xlib programmin manual" (by Adrian Nye... as far as I can tell, this is
the only printed X programming guide), and it refers to 2-byte fonts, but
doesn't elaborate much as to their use.

I can get text to display fine in the single-byte fonts, but if I switch
to a double-byte font, I can't... I'm assuming I'm just confused as to the
encoding, but I've tried both Unicode and shift-JIS, and nothing seems to
be displaying. Here's what I'm trying to do:

        // Open display, etc.

        Font current_font;
        XFontStruct *font_info;

        // For example... any 2-byte font
        current_font = XLoadFont( display,
        "-jis-fixed-medium-r-normal--16-110-100-100-c-160-jisx0208.1983-0"
        );

        font_info = XQueryFont( display, current_font );

        // Making sure it's really a 2-byte font
        if ( font_info->min_byte1 )
        {
                XChar2b *string16 = ( XChar2b * )
                        calloc( sizeof( XChar2b ), 10 );
                int i;

                for ( i = 0; i < 10; i++ )
                {
                        // This assumes shift-JIS
                        string16[ i ].byte1 = 137;
                        string16[ i ].byte2 = 159 + i;

                        // This assumes Unicode
                        // string16[ i ].byte1 = 0x2f
                        // string16[ i ].byte2 = i;

                        // This tries Unicode page 0
                        // string16[ i ].byte1 = 0;
                        // string16[ i ].byte2 = 65 + i;
                }

                XDrawImageString16( display, win, gc,
                        10, 10 + font_info->ascent,
                        string16, 10 );
        }

But I always get a blank string.. this same code works OK if I use a
single-byte font and a "regular" string, and I know I can display
shift-JIS encoded characters (since I can view web pages in Japanese)...
what am I missing?

Thanks!