Global acess to dynamic allocated data

Hello

I'm trying write program in GTK/C. Inside one callback function (called on button click) I read data from file and allocate them dynamic.

Code:

---


 extern    gfloat *X;

void on_wczytaj_clicked  (GtkButton *klawisz, gpointer  user_data)
{
...
                X = g_new0 (gfloat, number_of_points);       
....
                X[i]=num;
....
}

---

Now I need to have access to this X from another callback function.
I thought if X is global I have access to data ... but not.

Code:

---

void other_call_function  (GtkButton *klawisz2, gpointer  user_data)
{
...
            printf(" X=%d", X[i]);
....
}

---

As stated, such a thing ought to work.

Code:

---

#include <stdio.h>
#include <stdlib.h>

float *X;

void foo(float value)
{
  X = malloc(10 * sizeof *X);
  X[4] = value;
}

void bar(void)
{
  printf("%g\n", X[4]);
}

int main()
{
  foo(123.45);
  bar();
  return 0;
}

/* my output
123.45
*/

---

If the problem is in the '...', we'd need to see it. Otherwise, I'd recommend using the correct format specifier in printf for a gfloat -- I can't imagine that %d is the right one.

Hi

You are right. Mistake was in ....
It takes some time to find it. Local variable cover global and there was no access.
But now it works correct.

Thanks a lot :-)

Daniel