Function Macro

GLibGNUC_PRINTF

Declaration [src]

#define G_GNUC_PRINTF (
  format_idx,
  arg_idx
)

Description [src]

Expands to the GNU C format function attribute if the compiler is gcc. This is used for declaring functions which take a variable number of arguments, with the same syntax as printf(). It allows the compiler to type-check the arguments passed to the function.

Place the attribute after the function declaration, just before the semicolon.

See the GNU C documentation for more details.

gint g_snprintf (gchar  *string,
                 gulong       n,
                 gchar const *format,
                 ...) G_GNUC_PRINTF (3, 4);

Parameters

format_idx -
 

The index of the argument corresponding to the format string (the arguments are numbered from 1)

arg_idx -
 

The index of the first of the format arguments, or 0 if there are no format arguments.