APPENDIX EGError Types
GLib provides a standard method for error propagation called GError. In this appendix, you will find a complete list of the GError domains, as of GTK+ 2.10, along with the error types that correspond to each domain.
The GError structure provides three elements: the error domain, a message string, and an error code.
struct GError
{
GQuark domain;
gchar *message;
gint code;
};
Each error domain represents a group of similar error types. Example error domains include G_BOOKMARK_FILE_ERROR, GDK_PIXBUF_ERROR, and G_FILE_ERROR. They are always named as <NAMESPACE>_<MODULE>_ERROR, where the namespace is the library containing the function, and the module is the widget or object type.
The message is a human-readable string ...
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