Problem You want to loop over the entries in an FXSettings object.
Solution Since the FXSettings class is derived from FXDict, the procedure for iterating over the contents of a settings object is similar to that for iterating over the contents of any dictionary. The important thing to recognize is that each key in a settings object is the name of a different section of the settings, and the "data" for that section is itself another dictionary of (key, value) pairs. So, to iterate over the sections in a settings object, you'd begin with some code like this:
FXint s;
FXStringDict *dict;
for (s = settings->first(); s < settings->size(); s = settings->next(s))
{
dict = settings->data(s);
}
Here, settings is a pointer to an FXSettings object and dict is assigned a pointer to a section of the settings. Now we can build on this by adding an inner loop that loops over the contents of each section (which is just an FXStringDict, a dictionary that maps string keys to string values):
FXint s;
FXStringDict *dict;
for (s = settings->first(); s < settings->size(); s = settings->next(s))
{
dict = settings->data(s);
for (FXint e = dict->first(); e < dict->size(); e = dict->next(e))
{
const FXchar *key = dict->key(s);
const FXchar *data = dict->data(s);
FXbool mark = dict->mark(s);
}
}
Of course, if you know the name of the section you're interested in, you don't have to loop over the entire settings object to find it; that's what the find() function is for:
FXStringDict *prefs;
prefs = settings->find("PREFERENCES");
for (FXint e = prefs->first(); e < prefs->size(); e = prefs->next(e))
{
const FXchar *key = prefs->key(e);
const FXchar *data = prefs->data(e);
}
And (last but not least) if you know the name of the specific setting (and which section it's in) you can go straight to it:
const FXchar *data = settings->find("PREFERENCES")->find("IceCreamFlavor");
Contributor(s) Lyle Johnson |