Sink CUSTOM Windows Forms Events from Native C++ Classes?

[=?Utf-8?B?SmFtZXM=?=]

I've managed to have my c++ CWinFormsDialog<...class handle a standard
click event from my c# code as in:
http://msdn2.microsoft.com/en-us/lib...7d(VS.80).aspx

Is it possible to handle you own custom events with your own EventArgs in
the same way?

I get all sorts of strange compilation errors when I try:
GetControl()->MyEvent += MAKE_DELEGATE(System::EventHandler,
OnMyEventHandler);

void MyClass::OnMyEventHandler(System::Object^ pSender,
MYUSERCONTROL::MyEventArgs^ pEventArgs)
{
....
}
error C2870: 'MYNAMESPACE' : a namespace definition must appear either at
file scope or immediately within another namespace definition

error C4694: 'MYNAMESPACE::HelperFunctions': a sealed abstract class cannot
have a base-class 'System::MulticastDelegate'

[Sheng Jiang[MVP]]

I guess you need to use System::EventHandler<MYUSERCONTROL::MyEventArgsas
the delegate type

--
Sheng Jiang
Microsoft MVP in VC++
"James" <Ja***@discussions.microsoft.comwrote in message
news:11**********************************@microsof t.com...

I've managed to have my c++ CWinFormsDialog<...class handle a standard
click event from my c# code as in:
http://msdn2.microsoft.com/en-us/lib...7d(VS.80).aspx

Is it possible to handle you own custom events with your own EventArgs in
the same way?

I get all sorts of strange compilation errors when I try:
GetControl()->MyEvent += MAKE_DELEGATE(System::EventHandler,
OnMyEventHandler);

void MyClass::OnMyEventHandler(System::Object^ pSender,
MYUSERCONTROL::MyEventArgs^ pEventArgs)
{
...
}
error C2870: 'MYNAMESPACE' : a namespace definition must appear either at
file scope or immediately within another namespace definition

error C4694: 'MYNAMESPACE::HelperFunctions': a sealed abstract class

cannot

have a base-class 'System::MulticastDelegate'

[=?Utf-8?B?SmFtZXM=?=]

Thanks, you can do it.
EVENT_DELEGATE_ENTRY( OnMyEventHandler, System::Object^,
MYUSERCONTROL::MyEventArgs^ );

Something weird was going on with my solution.
I'd done a rebuild on it, but doing a clean, closing and reopening visual
studio, and rebuilding seemed to sort things out...

I hope all these problems are finally sorted out in VS2008, but then again
we were promised they would be in vs2005

"Sheng Jiang[MVP]" wrote:

I guess you need to use System::EventHandler<MYUSERCONTROL::MyEventArgsas
the delegate type

--
Sheng Jiang
Microsoft MVP in VC++
"James" <Ja***@discussions.microsoft.comwrote in message
news:11**********************************@microsof t.com...

I've managed to have my c++ CWinFormsDialog<...class handle a standard
click event from my c# code as in:
http://msdn2.microsoft.com/en-us/lib...7d(VS.80).aspx

Is it possible to handle you own custom events with your own EventArgs in
the same way?

I get all sorts of strange compilation errors when I try:
GetControl()->MyEvent += MAKE_DELEGATE(System::EventHandler,
OnMyEventHandler);

void MyClass::OnMyEventHandler(System::Object^ pSender,
MYUSERCONTROL::MyEventArgs^ pEventArgs)
{
...
}
error C2870: 'MYNAMESPACE' : a namespace definition must appear either at
file scope or immediately within another namespace definition

error C4694: 'MYNAMESPACE::HelperFunctions': a sealed abstract class

cannot

have a base-class 'System::MulticastDelegate'