try this:

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

var watch ;




PANEL* pTest =
{
pos_x = 10; // CONTROL PANEL POSITION IN WINDOW
pos_y = 10;
size_x = 150;
size_y = 300;

layer = 2;

button(10, 10, "boton2.bmp", "boton1.bmp", NULL, test, NULL, NULL);

red = 128;
green = 128;
blue = 128;
flags = LIGHT | VISIBLE;
}

function test()
{
watch = 1234;
printf("on");
}

function main()
{
video_mode = 6;
mouse_mode=2;
while(1)
{
mouse_pos.x=mouse_cursor.x;
mouse_pos.y=mouse_cursor.y;

wait(1);
}}

THANKS!!!! it works!

but having to do this is really weird ...

mouse_pos.x = mouse_cursor.x;
mouse_pos.y = mouse_cursor.y;