IIRC, each of these objects is a "named item" - so whatever name you use
when you call AddNamedItem() is the prefix and the suffix is the name of
the function on the event interface. I'm really not sure how multiple
event interfaces are supported, if at all.
Cheers,
Mark
On 14/03/2023 1:12 pm, Wuping Xin wrote:
Hi Mark,
- "you would define a function called "ObjectName_EventName"
Thank you again! This is valuable info. In the following
pseudo-code, the Host COM Object implements TWO Events interfaces.
How should I defined relevant event sink functions? For example, if
the object instance is named "MyHostObject", should I just directly
define the following event sink functions?
MyHostObject.Do_A_Event()
MyHostObject.Do_B_Event()
MyHostObject.Do_C_Event()
MyHostObject.Do_D_Event()
interface _IMondayEvents
{
Do_A_Event;
Do_B_event;
}
interface _ITuesdayEvents
{
Do_C_Event;
Do_D_event;
}
coclass HostApplication
{
[default] interface IHostApplication;
[source] interface _IMondayEvents;
[source] interface _ITuesdayEvents;
};
------ Original Message ------
From "Mark Hammond" <mhamm...@skippinet.com.au>
To "Wuping Xin" <wup...@caliper.com>
Cc "Python-win32@python.org" <Python-win32@python.org>
Date 3/13/2023 8:45:37 PM
Subject Re: [python-win32] How to enable events for Python Active
Scripting?
*WARNING EXTERNAL EMAIL *
[adding the list back in]
I'm still not quite sure what you are trying to do. If you are trying
to use Active Scripting, then things should "just work" in the same
way they work for other Active Scripting languages. The IE demos show
us handling events from IE. This all ties together with interfaces
described in typelibs and using IConnectionPoint etc. In this world
you don't implement Python classes which derive from EventSink or
ScriptItem, you would define a function called "ObjectName_EventName"
- eg the "Image_OnClick()" you will find in mousetrack.htm.
If you are just trying to use the IConnectionPoint etc without the
Active Scripting framework, then your best bet is to check out
win32com\demos\connect.py, and specifically how it uses
"win32com.client.connect.SimpleConnection()" with the CLSID of an
object implementing the interface which fires the events.
I'm afraid it has been many years since I've worked on anything
related to COM or events, so I really don't have great insights into
the finer details. I've also no additional demos - everything
relevant I have is in the repo.
Cheers,
Mark
On 14/03/2023 10:41 am, Wuping Xin wrote:
Hi Mark,
Thank you again for your suggestion.
Here is my use case:
1. C++ Host Application, which exposes a COM object model (with COM
events).
2. Users are expected to write Python script to interact with the COM
object model.
Following your advice, I read the following source files
- win32comext\axscript\client\framework.py
- win32comext\axscript\test\testHost.py
But I am still somewhat unsure how to create event sinks at the Python
script side.
- Should I add a user-define Python class that inherits from EventSink
or ScriptItem?
Do you think you might be able to provide more hints or it would be
great if there is an example to illustrate this?
Much appreciated!
Wuping Xin, PE, PhD
Chief Technology Officer | Caliper Corporation
|||||||||||||||||||||||||||||||||||||||||||||||||||||
1172 Beacon St, Ste 300 • Newton MA 02461 USA
Mobile: 617-564-1676 • Main: 617-527-4700
------ Original Message ------
From "Mark Hammond"
<mhamm...@skippinet.com.au>
To "Wuping Xin"<oudou...@gmail.com>;python-win32@python.org
Date 3/12/2023 10:54:23 PM
Subject Re: [python-win32] How to enable events for Python Active
Scripting?
It's difficult to know what exactly you mean, but if it is how to use
IConnectionPoint etc from Python in general, then you should check out the
following files in the distribution:
com\win32com\demos\connect.py
com\win32com\server\connect.py
com\win32com\client\connect.py
If it is about the use of these interfaces specifically with ActiveScripting,
then you should find win32comext\axscript\test\testHost.py useful.
win32comext\axscript\client\framework.py is where the implementation of Active
Scripting's event handling is implemented - eg, see the functions Connect,
CreateConnections, ConnectEventHandlers etc in that file.
HTH,
Mark
On 13/03/2023 1:05 am, Wuping Xin wrote:
I have a host application that uses Python Active Scripting. That host
application implements IConnectionPoint / IConnectionPointContainers etc, and I
am able to set COM event callbacks in C++.
But I am having a hard time to figure out how to set COM event callback with Python
Active Scripting - I bought the book "/Python Programming On Win32, but /it
doesn't provide much information about//Python Active Scripting COM events.
Need help and much appreciate any advice.
Wu
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