mirror of
https://github.com/Ryujinx/GtkSharp.git
synced 2024-07-03 19:46:01 +02:00
40 lines
2.0 KiB
Plaintext
40 lines
2.0 KiB
Plaintext
Mike,
|
|
|
|
We have some problems. Some methods are going to return a gtk widget which
|
|
will need to be wrapped again into a c# class. This will have a nasty
|
|
reaction when callbacks are added to the wrapper, then the wrapper is nuked
|
|
when complete. It will leave a rogue pointer of some kind laying around, and
|
|
callbacks won't work as expected.
|
|
|
|
Proposed solution:
|
|
Every GTK# class is a wrapper class. With a constructor for a GtkWidget* and
|
|
one for a default _new. Events are done as in CVS, except that the events
|
|
object will need to be bound to the GtkWidget owning it, and when a wrapper
|
|
is created, that Events object is resurected. This way, even if there is no
|
|
wrapper in existance, signals will function properly, and multiple wrappers
|
|
will work properly too. The event object will register a delete signal with
|
|
the widget so that when its nuked, it has a chance to free itself. Are we
|
|
going to have to tell the garbage collector to stay away from this class?
|
|
We might need our own class for this, and this class might not be able to be
|
|
written in c#.
|
|
|
|
|
|
Problem number two is with taking an arbitrary GtkWidget, and constructing a
|
|
wrapper as needed. Which wrapper is created? A simple GtkWidget wouldnt work
|
|
too well if the GtkWidget is really a button. We need to deside how to
|
|
handle this. Should we just return a GtkWidget, and force the developer to
|
|
pass the GtkWidget back to a constructor for the desided apon Widget wrapper?
|
|
How does gtk itself deal with this? Are we going to need a database of
|
|
widget wrappers for this?
|
|
|
|
Posible solution:
|
|
How does (ToType)GtkWidget work in c#. If the type you want to cast from is
|
|
not of the right type, but the ToType contains a constructor for GtkWidget,
|
|
will the cast succeed? If so, this will work quite nicely. Everything is a
|
|
GtkWidget object, and cast bindings as needed. If this does not work, can
|
|
the cast operator be overridden some how? If so, good deal. If not again,
|
|
see if System.Reflection has anything that will help in conjunction with the
|
|
GTK Type system.
|
|
|
|
Bob
|