Referencing an managed class from an unmanaged class?

[Bruce]

I need to fire an event from an unmanaged class. If I declare a pointer
to the managed class within the unmanaged class I get a compile error "

"cannot declare a managed 'm_pGps' in an unmanaged 'MyProgressNotifier'"


Any idea how I can do this?

 

[Bruce]

Here is what I need to do? I need top pass a pointer to the
MyProgressNotifier class to an unmanaged function. So the
MyProgressNotifier class cannot be managed. The NotifyTotal function
will be called from the mentioned unmanaged function.


class MyProgressNotifier : public GarXface4:rogressNotifier
{

public:

MyProgressNotifier() rogressNotifier()
{


}


void NotifyTotal(int nTotal)
{
ProgressNotifier::NotifyTotal(nTotal);
// Fire managed event here

}


};

 

[raylopez99]

I have no idea Bruce. Though I don't code for a living, I would not
even mix unmanaged with managed code. Just start from a Tabula Rasa.

But do check something as fundamental as you are compiling with the
/clr option rather than /clr:safe option.

RL

 

[Ben Voigt]

I need to fire an event from an unmanaged class. If I declare a pointer
to the managed class within the unmanaged class I get a compile error "

"cannot declare a managed 'm_pGps' in an unmanaged 'MyProgressNotifier'"


Any idea how I can do this?

 

[Ben Voigt]

gcroot<mngd_class*>

 

[Bruce]

Sorry, meant gcroot<mngd_class^>

Yes I finally found this in a search. Thank you. It is working perfectly.

Bruce E. Stemplewski
GarXface OCX and C++ Class Library for the Garmin GPS
www.stempsoft.com

 

[Tamas Demjen]

I need to fire an event from an unmanaged class. If I declare a pointer
to the managed class within the unmanaged class I get a compile error "

I have examples for both ways:

http://tweakbits.com/ManagedToUnmanagedCallback.cpp
http://tweakbits.com/UnmanagedToManagedCallback.cpp

Tom