FT_GlyphSlot  slot = face->glyph;  // a small shortcut

       FT_UInt       glyph_index;
       int           pen_x, pen_y, n;

       .. initialise library ..
       .. create face object ..
       .. set character size ..
       
       pen_x = 300;
       pen_y = 200;
       
       for ( n = 0; n < num_chars; n++ )
       {
         // load glyph image into the slot (erase previous one)

         error = FT_Load_Char( face, text[n], FT_LOAD_RENDER );
         if (error) continue;  // ignore errors

         
         // now, draw to our target surface

         my_draw_bitmap( &slot->bitmap,
                         pen_x + slot->bitmap_left,
                         pen_y - slot->bitmap_top );
                         
         // increment pen position 

         pen_x += slot->advance.x >> 6;
       }