[C - Windows] Create a DOS gui

[Alhazred]

I would give a better look to the software I'm writing, I want to be able to select an option by highlight it with arrow keys instead of write the correspondent number, something like what you can see in the pic below


Where could I find documentation to do such a thing?

[v0id]

You could choose to use the library, curses, which also is available for Windows. You could also do it, only using functions from the Win32 API. Take a look at this source, it will help you getting started.

[Alhazred]

Tanks, that's what I need

[G_Morgan]

I'd recommend curses solely for portability. Most systems have an implementation of it.

[Alhazred]

My software has a didactic aim and the code suggested by v0id matches what I need. I have understood how to obtain the graphic effect I want and I can do it.
I have only one problem now, inside that code you can read

menu_item const pb_list_menu[] =
{
  {"Ole",   NULL, func_231},
  {"Peter", NULL, func_232},
  {"Poul",  NULL, func_233},
  {"Back",  NULL, NULL},
  {NULL,    NULL, NULL}
};

is it possible to call a function with its parameters inside that structure?
Something like this

menu_item const main_menu[] =
{
  {"Write a new email", NULL, WriteMail(hServer, hClient)},
  {"Read received emails", NULL, ReadMail(hServer, hClient, 2)},
  {"Read sent emails", NULL, ReadMail(hServer, hClient, 3)},
  {"Delete email",NULL, DeleteMail(hServer)},
  {"Exit", NULL, LogOut(hServer)},
  {NULL, NULL, NULL}
};

What should I change to do that?

[v0id]

typedef struct menu_item
{
  const char *title;
  struct menu_item const *submenu;
  void(*function)(void);
}menu_item;

You can't do what you're trying to, because the functions do not match the function pointer in the menu_item-structure. The function pointer only mathes funtions with an empty parameter-list, and a return-value of nothing too.
You need to modify the function pointer (void (*function(void)) if you want to use other functions. You shall not care about the parameters to the functions, in the array, only the name of the function.