Sets @key in @settings to @value.
A convenience variant of g_settings_set() for 64-bit integers.
It is a programmer error to give a @key that isn't specified as having a int64 type in the schema for @settings.
the name of the key to set
the value to set it to
%TRUE if setting the key succeeded, %FALSE if the key was not writable
2.50
See Implementation
Sets @key in @settings to @value.
A convenience variant of g_settings_set() for 64-bit integers.
It is a programmer error to give a @key that isn't specified as having a int64 type in the schema for @settings.