Thread: cchar compiler error.

for this func mvin_wch, which in the manual looks like this.

int mvin_wch(int y, int x, cchar_t *wcval);

This make me expect that I should have a varable of type cchar_t

But when I try - just for a test, write a very simple app to create a variable of cchar_t

Code:

#include <stdio.h>
#include <curses.h>

int main(void)
{
    cchar_t ccht;
 return 0;
}

And then compile: gcc -lncursesw -g test.c -o test -Wall
I got compiler error 'cchar_t undeclared'

mvin_wch is in ncurses, and therefore I expect that cchar_t should be supported when including the curses header file,

What am I doing wrong.?
I should not need to use intscr() and endwin() just for this test.?

Looking at the header file here, it seems that cchar_t is a conditional compilation option.

This worked here
gcc -D_XOPEN_SOURCE_EXTENDED bar.c

See also Feature Test Macros - The GNU C Library

I get the expected error: ‘cchar_t’ undeclared (first use in this function)
Expected, because the only option of note is a linker option (for the library), not a compiler/pre-processor option.

If it "didn't work for you", all I can suggest is you read your curses.h header file, and see how cchar_t is declared.
Like for me, it is protected by a conditional compilation flag.

Did you see my post above.? I solved it with the info you gave me, thank you.