gdkPropertyChange(object, property, type, format, mode, data)propertyGdkAtom] the property to change.typeGdkAtom] the new type for the property. If mode is
GDK_PROP_MODE_PREPEND or GDK_PROP_MODE_APPEND, then this
must match the existing type or an error wiformatmode is
GDK_PROP_MODE_PREPEND or GDK_PROP_MODE_APPEND, then this
must match the existing format or an error will occur.modeGdkPropMode] a value describing how the new data is to be combined
with the current data.dataguchar *
gushort *, or
gulong *, depending on format), cast to a
guchar *.