Why wont this program work. It says that "quit_program" wont work, why?

///////////////////////////////
#include <acknex.h>
#include <default.c>

///////////////////////////////

BMAP* stopnorm = "stopncorrect.bmp";
BMAP* stopclick = "stopccorrect.bmp";

///////////////////////////////

PANEL* button_pan =
{
pos_x = 0;
pos_y = 0;
button(0, 0, stopclick, stopnorm, stopnorm, quit_program, NULL, NULL);
flags = OVERLAY | SHOW;
}

did you write an action or a function for quit_program

function quit_program()
{
sys_exit(NULL);
}

do you have your mouse mode >2?

As lostzac said: You need to define that function before!
The script can't perform a function it doesn't know.

And like MMike says, you need a mouse.

ok, thanks! Its working properly now.