Thread: warning i've never seen

>warning: assignment discards qualifiers from pointer target type
What's the type of "GTK_ENTRY(GTK_COMBO(combo)->entry)"? Does it have a const or volatile qualifier?

>I don't know what a qualifier is.
const and volatile are qualifiers. They add restrictions or further information to a type.

Entry can change so i'd say that's volatile but i'm not about GTK_ENTRY

It can be changed, so it is voilatile?
Where the GtkWidget is defined?[edit] And other stuff.

volatile is a keyword to tell the compiler not to cache the value of the variable between statements because the variable can be changed outside the program, by a different thread for example. It's not used very often.

You probably know what a const qualifier is: it specifies that the given variable cannot be changed.

[edit] A GtkWidget is defined as this:

Code:

typedef struct {
  /* The style for the widget. The style contains the
   *  colors the widget should be drawn in for each state
   *  along with graphics contexts used to draw with and
   *  the font to use for text.
   */
  GtkStyle *style;
  
  /* The widget's desired size.
   */
  GtkRequisition requisition;
  
  /* The widget's allocated size.
   */
  GtkAllocation allocation;
  
  /* The widget's window or its parent window if it does
   *  not have a window. (Which will be indicated by the
   *  GTK_NO_WINDOW flag being set).
   */
  GdkWindow *window;
  
  /* The widget's parent.
   */
  GtkWidget *parent;
} GtkWidget;

From http://developer.gnome.org/doc/API/2...GtkWidget.html [/edit]