[Gambas-user] Component, GB.Raise, Event, Collection argument

[Christian Faure]

Very thanks!

El Viernes, 3 de Septiembre de 2004 02:43, Benoit Minisini escribió:
> On Friday 03 September 2004 05:21, Christian Faure wrote:
> > Hello Benoit!
>
> Hi,
>
> > i'am working on a gambas-component
>
> So you should have sent this mail on the development mailing-list :-)

Ok!

>
> > No problems when using  String parameters, but
> > when use a Collection as parameter, i get an unexpected error an program
> > stop.
> >
> > my problem is how to pass a Collection as event param
> >
> > C code:
> > ...
> > DECLARE_EVENT(MyEvent);
> >
> > static void test (void *_object){
> > 	GB_COLLECTION * MyCollection;
>
> No. --> 'GB_COLLECTION MyCollection'.
> GB_COLLECTION is already a pointer. Look in gambas.h.
>
> >     	GB_VARIANT_VALUE MyValue;
> > 	//create a new collection object
> > 	GB.Collection.New ( MyCollection , GB_COMP_TEXT );
>
> --> GB.Collection.New ( &MyCollection , GB_COMP_TEXT );
>
> And your object is created with a zero reference counter. You must
> reference it:
>
> ---> GB.Ref(MyCollection);
>
> > 	//add a string item
> > 	MyValue._string.value="MyStringValue";
>
> This does not work. You must create a GB_VARIANT string value. There is no
> API to create such a value at the moment. You must take it from the
> interpreter stack.
>
> I could create such an API, unless this is only for a test. Tell me what
> you want to do exactly.
>
> > 	GB.Collection.Set ( MyCollection, "MyKey", 5 , &MyValue);
> >         //Raise event with collection param
> >         GB.Raise(THIS, MyEvent, 1, GB_T_OBJECT, MyCollection);
>
> If you don't use anymore the collection, you must dereference it:
>
> ---> GB.Unref((void **)&MyCollection);
>
> > }
> > ...
> > GB_DESC CMyClassDesc[] =
> > {
> > 	...
> >    	GB_EVENT("MyEvent", NULL, "(MyCollection)o", &MyEvent),
> >  	...
> > }
> >
> > Gambas code:
> > ...
> > sub MyComp_MyEvent(MyCollection as object)
> > 	print MyCollection.Count
> > end sub
> > ...
> >
> > Can you help me?
> > What is wrong?
> > Are correct the sequence for create and adding an item to a Collection?
>
> Look at the Settings class (gbx_c_settings.c). It uses a collection to
> store program settings.
>
> Regards,