IDataBase::NewUID and IDataBase::Instantiate
Hi!
I'm a little bit confused. Reading about persistent objects I found three different descriptions of how to do it.
UID uid = db->NewUID(kBoss);
and then
(1) found in IDynPnPanelManager from the SDK
IDynPnPanelManager *interface = (Interface*)db->Instantiate(uid, IID);
or
(2) the description of Instantiate in the API compendium says "Normally this is called from InterfacePtr, instead of directly." So I guess this is meant:
InterfacePtr<Interface> interface(db, uid, IID);
or
(3) programming guide, page 69 says "Before you instantiate a new object, use the InterfacePtr template to retrieve one of the object's interfaces. Pass the returned InterfacePtr to the IDatabase::Instantiate method, which calls the database to instantiate the object." So I'd expect I've to write
InterfacePtr<Interface> interface(db, uid, IID);
IDynPnPanelManager *interface = (Interface*)db->Instantiate(interface, IID);
Also though the return type of Instantiate is given with "IPMUnknown*", the doc says it can also return a reference to the object. How can I handle it if it can return a pointer or a reference?
Or am I thinking to complicate?
Martin
I tried to load .indd file with exactly the same code. This time, IDataBase object could open the file without an error, even though it should have raised a 'kInvalidFileFormatError' error.
This suggests me that SetMagicBytes() is not working as expected.
I also tried to set the MgicByte bytes manually as below. But still getting the same behaviour.
static DBUtils::MagicBytes myDatabaseBytes = { 'I', 'n', 'D', 'n', 'P', 'd', 'f', 'S'};
Any help would be greatly appreciated.
Thanks,
JP
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Hi All,
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Regards,
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That's why I wanted individual Childs to update their current status
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Srini.Hi Srinivasa,
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fidelfidel-castro wrote:
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blah blah
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blah blah
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What does it mean by class definitions being "owned"? As far
as i know, parent-child ApplicationDomain relationship is
constructed in such a way that class definitions on child domains
are overridden by the same (usually newer) class definitions on
parent domain, but I don't understand what it means by "owning" it.
This also leads to my 2nd question below.
2. The docs then went on saying "For example, the first
module to load the PopUpManager class becomes the owner of the
PopUpManager class for the entire application because it registers
the manager with the SingletonManager. If another module later
tries to use the PopUpManager, Adobe ® Flash® Player
throws an exception."
Well I've tried to replicate this scenario by creating 2
modules and have each of them calling PopUpManager.createPopUp() on
creationComplete event. I loaded up both modules from my shell
application and the popups from both modules worked, i.e., i see 2
popups on screen. But according to the docs, I should get an
exception when the 2nd module tries to run
PopUpManager.createPopUp(). So why is this not the case?
3. The docs also says, "This technique also applies to
components. The module that first uses the component owns that
component's class definition in its domain."
So, I assume what it means is that such restriction affects
not just singletons but normal objects as well. I tried another
test by having module1 instantiates an object of classA, pass it on
to module2, and then try to access it from module2. According to
docs, I should also get an exception from the player; however, this
is not the case. I was able to access the classA instance from
module2 with no errors. Consequently, I also tried to instantiate
classA from module1 and then instantiate another instance of classA
from module2, and that also worked.
As you can see, I'm really confused about almost everything
mentioned in this "module domains" section and how it affects us in
real life. Of course it's all nice and well that all my tests
worked and no exceptions are thrown, but I really wish to get to
the bottom of this and understand what "module domains" really
implies in all these scenarios.
Thanks,
Aaronhotscripts.com would be a good starting place.
Otherwise you'll probably need to farm out the work to
someone who can
program in the language of choice for your web host.
Maybe you are looking for
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