GLibprefix_error

since: 2.16

void
g_prefix_error (
  GError** err,
  const gchar* format,
  ...
)

Formats a string according to format and prefix it to an existing error message. If err is NULL (ie: no error variable) then do nothing.

If *err is NULL (ie: an error variable is present but there is no error condition) then also do nothing.

Available since: 2.16

This function is not directly available to language bindings.

err

Type: GError

A return location for a GError.

The argument will be modified by the function.

The argument can be set to NULL by the function.

The argument can be NULL.

The caller of the function takes ownership of the data, and is responsible for freeing it.

format

Type: const gchar*

Printf()-style format string.

The data is owned by the caller of the function.

The value is a NUL terminated UTF-8 string.

...

Type:

Arguments to format.