Hello,

Working on a VisStudio 2008 addin, using managed C++ (C++/CLR in the New
Project wizard).

In the OnConnection() function, I want to add a handler to the WindowEvents
collection.

When I do this:
// Hook up events
EnvDTE::Events ^ events = _applicationObject->Events;
EnvDTE::WindowEvents ^winEvents = events->WindowEvents();

I get an error message:
error C2660: 'EnvDTE::Events::WindowEvents::get' : function does not take 0
arguments

In the Object Browser I find this:
public EnvDTE.WindowEvents WindowEvents(EnvDTE.Window WindowFilter = null)
{ get; }

Thanks for any hints about what I'm doing wrong...

Note that:

EnvDTE::WindowEvents ^winEvents = events->WindowEvents;

EnvDTE::WindowEvents ^winEvents = events->WindowEvents(0);

both give the same error as mentioned above.

"Number8" <nowhere (AT) man (DOT) com> wrote

Have you tried WindowEvents[0] ? It's an indexed property and [] is the
indexing operator in C++ and C++/CLI.



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Thanks for the reply.
This code:
EnvDTE::WindowEvents ^we = events->WindowEvents[0];

generates this error:
1> No standard conversion exists from the boxed form of the arithmetic type
to the target type
1>.\Connect.cpp(27) : error C2660: 'EnvDTE::Events::WindowEvents::get' :
function does not take 0 arguments

According to the VS2008 documentation:
--------------------------------
Parameters
WindowFilter
Type: EnvDTE..::.Window

Optional. If supplied, window events occur only for the specified Window.
--------------------------------
It seems clear, from the error messages, that the parameter is not optional.
If that is the case, how does one supply a Window filter that means "all
windows"?

Hmm, in the Object Browser (VS 2008), I find this:
public EnvDTE.WindowEvents WindowEvents(EnvDTE.Window WindowFilter = null)
{ get; }

Member of EnvDTE.Events

Summary:

Returns the object that sources Window events.

"Number8" <nowhere (AT) man (DOT) com> wrote

Ahh, it likes the syntax. But the parameter type is a handle and we passed
a number. Try "nullptr".

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EnvDTE::WindowEvents ^we = events->WindowEvents(nullptr);
1>Compiling...
1>Connect.cpp
1>.\Connect.cpp(27) : error C2660: 'EnvDTE::Events::WindowEvents::get' :
function does not take 0 arguments

Thanks for the reply.

"Number8" <nowhere (AT) man (DOT) com> wrote

The syntax it likes is with square brackets...

EnvDTE::WindowEvents ^we = events->WindowEvents[nullptr];

Thanks, that builds.

Now, adding an event handler:

void CBAddIn4::Connect::WindowActivated2(EnvDTE::Window ^ lostFocus,
EnvDTE::Window ^ gotFocus)
{
}

EnvDTE::Events ^ events = _applicationObject->Events;
_winEvents = events->WindowEvents[nullptr];

_winEvents->WindowActivated += gcnew
EnvDTE::_dispWindowEvents_WindowActivatedEventHand ler(&CBAddIn4::Connect::WindowActivated2);

Compiler error:
1>Connect.cpp
1>.\Connect.cpp(28) : error C3352: 'void
CBAddIn4::Connect::WindowActivated2(EnvDTE::Window ^,EnvDTE::Window ^)' :
the specified function does not match the delegate type 'void
(EnvDTE::Window ^,EnvDTE::Window ^)'

"Number8" <nowhere (AT) man (DOT) com> wrote

Delegate creation from a non-static member function requires two parameters,
one to identify the member function and one to identify the instance. Try:

_winEvents->WindowActivated += gcnew
EnvDTE::_dispWindowEvents_WindowActivatedEventHand ler(this,
&CBAddIn4::Connect::WindowActivated2);

and it's not recommended to begin variable names with an underscore, only
library code should do that.