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       ggiPutc,  ggiPuts,  ggiGetCharSize  -  Draw  one  or more characters on


       #include <ggi/ggi.h>

       int ggiPutc(ggi_visual_t vis, int x, int y, char c);

       int ggiPuts(ggi_visual_t vis, int x, int y, const char *str);

       int ggiGetCharSize(ggi_visual_t vis, int *width, int *height);


       LibGGI provides a few functions to do basic character output. They  are
       for  debugging and simple GUI applications. They are simple on purpose:
       there is only one fixed-width font and its size cannot be changed. Only
       the  standard  ASCII character set (0x20 to 0x7f) is supported, with no
       internationalization features.  All more complex character functions go
       beyond the scope of this base library.

       ggiPutc puts a single character on a graphical visual.

       ggiPuts  puts  multiple  characters  (from  a  C-style  null-terminated
       string) at once. No special handling is applied to  control  characters
       like  CR  or  LF.  The  associated glyph for control characters will be
       displayed. ggiPuts also only clips text at the clipping  rectangle  and
       does not wrap text.

       ggiGetCharSize obtains the size of the character cell, in pixels.  This
       function allows the application to correctly position the text  output.
       Character size must always be checked and application should not assume
       that it will be constant across targets or  even  modes.  Visuals  must
       have  a  mode  set before querying the character size. It means that if
       you want to use a visual size which depends on the character size,  you
       might  have  to iterate over ggiSetMode(3) and ggiGetCharSize to get it
              Note: The values returned by ggiGetCharSize is not the  same  as
              the  values  of  dpp  of the current mode, which is in dots.  In
              graphics modes are 1x1  dpp  by  definition  and  use  at  least
              8x8-pixel fonts.  In text mode, the character cell is 1x1 pixels
              by definition and the dpp value is the actual size of the  font.


       0 for success.