GTK Fixed

Same as box, with difference ie in box size of widget depends on window but here in fixed size is fixed.

```c
#include <gtk/gtk.h>
#include <stdio.h>

int main(int argc, char **argv) {

  gtk_init(&argc, &argv);
  int b = 13;
  int a = 10;
  printf("hey");

  GtkWidget *window;
  GtkWidget *fixed;

  GtkWidget *button1;
  GtkWidget *button2;

  window = gtk_window_new(GTK_WINDOW_TOPLEVEL);

  gtk_window_set_default_size(GTK_WINDOW(window), 300, 200);

  fixed = gtk_fixed_new();

  button1 = gtk_button_new_with_label("button1");
  button2 = gtk_button_new_with_label("button2");

  // para: fixed widget,widget inside it, xCor,yCor
  gtk_fixed_put(GTK_FIXED(fixed), button1, 100, 50);
  gtk_fixed_put(GTK_FIXED(fixed), button2, 200, 100);

  // para: same with gtk_fixed_put but instead of adding widget it changes
  // coordinates
  gtk_fixed_move(GTK_FIXED(fixed), button1, 200, 100);
  gtk_fixed_move(GTK_FIXED(fixed), button2, 100, 50);

  g_signal_connect(window, "destroy", G_CALLBACK(gtk_main_quit), NULL);

  gtk_container_add(GTK_CONTAINER(window), fixed);

  gtk_widget_show_all(window);

  gtk_main();

  return 0;
}
```