The ::input signal can be used to influence the conversion of
the users input into a double value. The signal handler is
expected to use gtk_entry_get_text() to retrieve the text of
the entry and set new_value to the new value.
The default conversion uses g_strtod().
TRUE for a successful conversion, FALSE if the input
was not handled, and GTK_INPUT_ERROR if the conversion failed.
The ::input signal can be used to influence the conversion of the users input into a double value. The signal handler is expected to use gtk_entry_get_text() to retrieve the text of the entry and set new_value to the new value. The default conversion uses g_strtod(). TRUE for a successful conversion, FALSE if the input was not handled, and GTK_INPUT_ERROR if the conversion failed.