title: Setting the size of gtk scale
body: <p>I've got problems with gtk scale.
  I've got fixed widget where I placed horizontal scale. The problem is that the scale is very small and I don't know how to resize it to for example 100 pixels.
  Below is my code:</p>
  
  <pre><code>wind = gtk_window_new(GTK_WINDOW_TOPLEVEL);
  gtk_window_set_default_size(GTK_WINDOW(wind), 300, 300);
  
  fixed = gtk_fixed_new();
  gtk_container_add(GTK_CONTAINER(wind), fixed);
  
  button = gtk_button_new_with_label("button1");
  gtk_fixed_put(GTK_FIXED(fixed), button, 10, 20);
  
  button2 = gtk_button_new_with_label("button2");
  gtk_fixed_put(GTK_FIXED(fixed), button2, 200, 20);
  
  scale = gtk_scale_new_with_range(GTK_ORIENTATION_HORIZONTAL, 0, 100, 1);
  gtk_fixed_put(GTK_FIXED(fixed), scale, 100, 40);
  </code></pre>
  
  <p>and here is how it looks like:</p>
  
  <p><img src="https://i.stack.imgur.com/rIylK.png" alt="enter image description here"></p>
  
  <p>The scale is in the middle of the window and shows 0 value.</p>