Delegate from C++ to C#

Richard MSL

I have an application in managed C++, and a method in C# that I call. But now
I want to add the ability to tell the C# method a specific method in my C++
assembly to call back to. For example, to have the C++ call a sort routine in
C#, and send it a compare method, which the C## would call back to. I know
that within C# pointing to methods is done with delegates, but is it possible
between C++ and C#? Is there an example of this somewhere that anyone knows
of? Thanks for any help you can provide.

Feb 28 '06 #1

Subscribe Post Reply

1666

TerryFei

Hi Richard,
Welcome to MSDN Newsgroup!

I hope the following articles are helpful for you,
Title: Using C calling convention callback functions in C# and VB - the
easy way
URL: http://www.codeproject.com/dotnet/Cdecl_CSharp_VB.asp

Title: Delegates Tutorial - MC++ and C# - The dual perspective
URL:http://www.codeproject.com/managedcpp/csdeleg01.asp

Best Regards,

Terry Fei [MSFT]
Microsoft Community Support
Get Secure! www.microsoft.com/security

--------------------

Thread-Topic: Delegate from C++ to C#
thread-index: AcY8vySwZY6j6QVJS0qDqhdcP02TiA==
X-WBNR-Posting-Host: 205.207.165.144
From: "=?Utf-8?B?UmljaGFyZCBNU0w=?=" <Ri*************@nospam.nospam>
Subject: Delegate from C++ to C#
Date: Tue, 28 Feb 2006 15:31:47 -0800
Lines: 8
Message-ID: <A8**********************************@microsoft.co m>
MIME-Version: 1.0
Content-Type: text/plain;
charset="Utf-8"
Content-Transfer-Encoding: 7bit
X-Newsreader: Microsoft CDO for Windows 2000
Content-Class: urn:content-classes:message
Importance: normal
Priority: normal
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.0
Newsgroups: microsoft.public.dotnet.general
Path: TK2MSFTNGXA03.phx.gbl
Xref: TK2MSFTNGXA03.phx.gbl microsoft.public.dotnet.general:189842
NNTP-Posting-Host: TK2MSFTNGXA03.phx.gbl 10.40.2.250
X-Tomcat-NG: microsoft.public.dotnet.general

I have an application in managed C++, and a method in C# that I call. But nowI want to add the ability to tell the C# method a specific method in my C++assembly to call back to. For example, to have the C++ call a sort routine inC#, and send it a compare method, which the C## would call back to. I know
that within C# pointing to methods is done with delegates, but is it possiblebetween C++ and C#? Is there an example of this somewhere that anyone knowsof? Thanks for any help you can provide.

Mar 1 '06 #2

Richard MSL

Thank you. The second article looks perfect, I will see what I can do with it.

""TerryFei"" wrote:

Hi Richard,
Welcome to MSDN Newsgroup!

I hope the following articles are helpful for you,
Title: Using C calling convention callback functions in C# and VB - the
easy way
URL: http://www.codeproject.com/dotnet/Cdecl_CSharp_VB.asp

Title: Delegates Tutorial - MC++ and C# - The dual perspective
URL:http://www.codeproject.com/managedcpp/csdeleg01.asp

Best Regards,

Terry Fei [MSFT]
Microsoft Community Support
Get Secure! www.microsoft.com/security

--------------------
Thread-Topic: Delegate from C++ to C#
thread-index: AcY8vySwZY6j6QVJS0qDqhdcP02TiA==
X-WBNR-Posting-Host: 205.207.165.144
From: "=?Utf-8?B?UmljaGFyZCBNU0w=?=" <Ri*************@nospam.nospam>
Subject: Delegate from C++ to C#
Date: Tue, 28 Feb 2006 15:31:47 -0800
Lines: 8
Message-ID: <A8**********************************@microsoft.co m>
MIME-Version: 1.0
Content-Type: text/plain;
charset="Utf-8"
Content-Transfer-Encoding: 7bit
X-Newsreader: Microsoft CDO for Windows 2000
Content-Class: urn:content-classes:message
Importance: normal
Priority: normal
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.0
Newsgroups: microsoft.public.dotnet.general
Path: TK2MSFTNGXA03.phx.gbl
Xref: TK2MSFTNGXA03.phx.gbl microsoft.public.dotnet.general:189842
NNTP-Posting-Host: TK2MSFTNGXA03.phx.gbl 10.40.2.250
X-Tomcat-NG: microsoft.public.dotnet.general

I have an application in managed C++, and a method in C# that I call. But

now
I want to add the ability to tell the C# method a specific method in my

C++
assembly to call back to. For example, to have the C++ call a sort routine

in
C#, and send it a compare method, which the C## would call back to. I know
that within C# pointing to methods is done with delegates, but is it

possible
between C++ and C#? Is there an example of this somewhere that anyone

knows
of? Thanks for any help you can provide.

Mar 1 '06 #3

TerryFei

Hi Richard,
We are glad to know our information is helpful for you. It's my pleasure to
work with you. Thanks!

Best Regards,

Terry Fei [MSFT]
Microsoft Community Support
Get Secure! www.microsoft.com/security

--------------------

Thread-Topic: Delegate from C++ to C#
thread-index: AcY9SdMxjtwJBQw2QOSL5vwicxG5sQ==
X-WBNR-Posting-Host: 205.207.165.144
From: "=?Utf-8?B?UmljaGFyZCBNU0w=?=" <Ri*************@nospam.nospam>
References: <A8**********************************@microsoft.co m> <Wz**************@TK2MSFTNGXA03.phx.gbl>Subject: RE: Delegate from C++ to C#
Date: Wed, 1 Mar 2006 08:04:31 -0800
Lines: 61
Message-ID: <FF**********************************@microsoft.co m>
MIME-Version: 1.0
Content-Type: text/plain;
charset="Utf-8"
Content-Transfer-Encoding: 7bit
X-Newsreader: Microsoft CDO for Windows 2000
Content-Class: urn:content-classes:message
Importance: normal
Priority: normal
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.0
Newsgroups: microsoft.public.dotnet.general
Path: TK2MSFTNGXA03.phx.gbl
Xref: TK2MSFTNGXA03.phx.gbl microsoft.public.dotnet.general:189914
NNTP-Posting-Host: TK2MSFTNGXA03.phx.gbl 10.40.2.250
X-Tomcat-NG: microsoft.public.dotnet.general

Thank you. The second article looks perfect, I will see what I can do with it.
""TerryFei"" wrote:
Hi Richard,
Welcome to MSDN Newsgroup!

I hope the following articles are helpful for you,
Title: Using C calling convention callback functions in C# and VB - the
easy way
URL: http://www.codeproject.com/dotnet/Cdecl_CSharp_VB.asp

Title: Delegates Tutorial - MC++ and C# - The dual perspective
URL:http://www.codeproject.com/managedcpp/csdeleg01.asp

Best Regards,

Terry Fei [MSFT]
Microsoft Community Support
Get Secure! www.microsoft.com/security

--------------------
>Thread-Topic: Delegate from C++ to C#
>thread-index: AcY8vySwZY6j6QVJS0qDqhdcP02TiA==
>X-WBNR-Posting-Host: 205.207.165.144
>From: "=?Utf-8?B?UmljaGFyZCBNU0w=?=" <Ri*************@nospam.nospam>
>Subject: Delegate from C++ to C#
>Date: Tue, 28 Feb 2006 15:31:47 -0800
>Lines: 8
>Message-ID: <A8**********************************@microsoft.co m>
>MIME-Version: 1.0
>Content-Type: text/plain;
> charset="Utf-8"
>Content-Transfer-Encoding: 7bit
>X-Newsreader: Microsoft CDO for Windows 2000
>Content-Class: urn:content-classes:message
>Importance: normal
>Priority: normal
>X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.0
>Newsgroups: microsoft.public.dotnet.general
>Path: TK2MSFTNGXA03.phx.gbl
>Xref: TK2MSFTNGXA03.phx.gbl microsoft.public.dotnet.general:189842
>NNTP-Posting-Host: TK2MSFTNGXA03.phx.gbl 10.40.2.250
>X-Tomcat-NG: microsoft.public.dotnet.general
>
>I have an application in managed C++, and a method in C# that I call. But
now
>I want to add the ability to tell the C# method a specific method in my

C++
>assembly to call back to. For example, to have the C++ call a sort
routine in
>C#, and send it a compare method, which the C## would call back to. I

know >that within C# pointing to methods is done with delegates, but is it

possible
>between C++ and C#? Is there an example of this somewhere that anyone

knows
>of? Thanks for any help you can provide.
>
>

Mar 2 '06 #4

Richard MSL

Just a note to follow up in case anyone has a similar problem, I was able to
make a C++ program with a method in it, then call a C# function, sending in
the delegate to the method, and the C# called back to the C++ method.

Thanks again for the help.
""TerryFei"" wrote:

Hi Richard,
We are glad to know our information is helpful for you. It's my pleasure to
work with you. Thanks!

Best Regards,

Terry Fei [MSFT]
Microsoft Community Support
Get Secure! www.microsoft.com/security

--------------------
Thread-Topic: Delegate from C++ to C#
thread-index: AcY9SdMxjtwJBQw2QOSL5vwicxG5sQ==
X-WBNR-Posting-Host: 205.207.165.144
From: "=?Utf-8?B?UmljaGFyZCBNU0w=?=" <Ri*************@nospam.nospam>
References: <A8**********************************@microsoft.co m>

<Wz**************@TK2MSFTNGXA03.phx.gbl>
Subject: RE: Delegate from C++ to C#
Date: Wed, 1 Mar 2006 08:04:31 -0800
Lines: 61
Message-ID: <FF**********************************@microsoft.co m>
MIME-Version: 1.0
Content-Type: text/plain;
charset="Utf-8"
Content-Transfer-Encoding: 7bit
X-Newsreader: Microsoft CDO for Windows 2000
Content-Class: urn:content-classes:message
Importance: normal
Priority: normal
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.0
Newsgroups: microsoft.public.dotnet.general
Path: TK2MSFTNGXA03.phx.gbl
Xref: TK2MSFTNGXA03.phx.gbl microsoft.public.dotnet.general:189914
NNTP-Posting-Host: TK2MSFTNGXA03.phx.gbl 10.40.2.250
X-Tomcat-NG: microsoft.public.dotnet.general

Thank you. The second article looks perfect, I will see what I can do with

it.

""TerryFei"" wrote:
Hi Richard,
Welcome to MSDN Newsgroup!

I hope the following articles are helpful for you,
Title: Using C calling convention callback functions in C# and VB - the
easy way
URL: http://www.codeproject.com/dotnet/Cdecl_CSharp_VB.asp

Title: Delegates Tutorial - MC++ and C# - The dual perspective
URL:http://www.codeproject.com/managedcpp/csdeleg01.asp

Best Regards,

Terry Fei [MSFT]
Microsoft Community Support
Get Secure! www.microsoft.com/security

--------------------
>Thread-Topic: Delegate from C++ to C#
>thread-index: AcY8vySwZY6j6QVJS0qDqhdcP02TiA==
>X-WBNR-Posting-Host: 205.207.165.144
>From: "=?Utf-8?B?UmljaGFyZCBNU0w=?=" <Ri*************@nospam.nospam>
>Subject: Delegate from C++ to C#
>Date: Tue, 28 Feb 2006 15:31:47 -0800
>Lines: 8
>Message-ID: <A8**********************************@microsoft.co m>
>MIME-Version: 1.0
>Content-Type: text/plain;
> charset="Utf-8"
>Content-Transfer-Encoding: 7bit
>X-Newsreader: Microsoft CDO for Windows 2000
>Content-Class: urn:content-classes:message
>Importance: normal
>Priority: normal
>X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.0
>Newsgroups: microsoft.public.dotnet.general
>Path: TK2MSFTNGXA03.phx.gbl
>Xref: TK2MSFTNGXA03.phx.gbl microsoft.public.dotnet.general:189842
>NNTP-Posting-Host: TK2MSFTNGXA03.phx.gbl 10.40.2.250
>X-Tomcat-NG: microsoft.public.dotnet.general
>
>I have an application in managed C++, and a method in C# that I call. But now
>I want to add the ability to tell the C# method a specific method in my
C++
>assembly to call back to. For example, to have the C++ call a sort routine in
>C#, and send it a compare method, which the C## would call back to. I know >that within C# pointing to methods is done with delegates, but is it
possible
>between C++ and C#? Is there an example of this somewhere that anyone
knows
>of? Thanks for any help you can provide.
>
>

Mar 7 '06 #5

TerryFei

Hi Richard,
You are welcome. Thanks!

Best Regards,

Terry Fei [MSFT]
Microsoft Community Support
Get Secure! www.microsoft.com/security
--------------------

Thread-Topic: Delegate from C++ to C#
thread-index: AcZCOXf/Nxnm/ZZOQpiUMKTzvwqQqA==
X-WBNR-Posting-Host: 205.207.165.144
From: =?Utf-8?B?UmljaGFyZCBNU0w=?= <Ri*************@nospam.nospam>
References: <A8**********************************@microsoft.co m> <Wz**************@TK2MSFTNGXA03.phx.gbl>
<FF**********************************@microsoft.co m>
<AP**************@TK2MSFTNGXA03.phx.gbl>Subject: RE: Delegate from C++ to C#
Date: Tue, 7 Mar 2006 14:50:02 -0800
Lines: 113
Message-ID: <0D**********************************@microsoft.co m>
MIME-Version: 1.0
Content-Type: text/plain;
charset="Utf-8"
Content-Transfer-Encoding: 7bit
X-Newsreader: Microsoft CDO for Windows 2000
Content-Class: urn:content-classes:message
Importance: normal
Priority: normal
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.1830
Newsgroups: microsoft.public.dotnet.general
Path: TK2MSFTNGXA03.phx.gbl
Xref: TK2MSFTNGXA03.phx.gbl microsoft.public.dotnet.general:190365
NNTP-Posting-Host: TK2MSFTNGXA03.phx.gbl 10.40.2.250
X-Tomcat-NG: microsoft.public.dotnet.general

Just a note to follow up in case anyone has a similar problem, I was able tomake a C++ program with a method in it, then call a C# function, sending inthe delegate to the method, and the C# called back to the C++ method.

Thanks again for the help.
""TerryFei"" wrote:
Hi Richard,
We are glad to know our information is helpful for you. It's my pleasure to work with you. Thanks!

Best Regards,

Terry Fei [MSFT]
Microsoft Community Support
Get Secure! www.microsoft.com/security

--------------------
>Thread-Topic: Delegate from C++ to C#
>thread-index: AcY9SdMxjtwJBQw2QOSL5vwicxG5sQ==
>X-WBNR-Posting-Host: 205.207.165.144
>From: "=?Utf-8?B?UmljaGFyZCBNU0w=?=" <Ri*************@nospam.nospam>
>References: <A8**********************************@microsoft.co m>

<Wz**************@TK2MSFTNGXA03.phx.gbl>
>Subject: RE: Delegate from C++ to C#
>Date: Wed, 1 Mar 2006 08:04:31 -0800
>Lines: 61
>Message-ID: <FF**********************************@microsoft.co m>
>MIME-Version: 1.0
>Content-Type: text/plain;
> charset="Utf-8"
>Content-Transfer-Encoding: 7bit
>X-Newsreader: Microsoft CDO for Windows 2000
>Content-Class: urn:content-classes:message
>Importance: normal
>Priority: normal
>X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.0
>Newsgroups: microsoft.public.dotnet.general
>Path: TK2MSFTNGXA03.phx.gbl
>Xref: TK2MSFTNGXA03.phx.gbl microsoft.public.dotnet.general:189914
>NNTP-Posting-Host: TK2MSFTNGXA03.phx.gbl 10.40.2.250
>X-Tomcat-NG: microsoft.public.dotnet.general
>
>Thank you. The second article looks perfect, I will see what I can do with
it.
>
>""TerryFei"" wrote:
>
>> Hi Richard,
>> Welcome to MSDN Newsgroup!
>>
>> I hope the following articles are helpful for you,
>> Title: Using C calling convention callback functions in C# and VB -
the >> easy way
>> URL: http://www.codeproject.com/dotnet/Cdecl_CSharp_VB.asp
>>
>> Title: Delegates Tutorial - MC++ and C# - The dual perspective
>> URL:http://www.codeproject.com/managedcpp/csdeleg01.asp
>>
>> Best Regards,
>>
>> Terry Fei [MSFT]
>> Microsoft Community Support
>> Get Secure! www.microsoft.com/security
>>
>> --------------------
>> >Thread-Topic: Delegate from C++ to C#
>> >thread-index: AcY8vySwZY6j6QVJS0qDqhdcP02TiA==
>> >X-WBNR-Posting-Host: 205.207.165.144
>> >From: "=?Utf-8?B?UmljaGFyZCBNU0w=?=" <Ri*************@nospam.nospam>
>> >Subject: Delegate from C++ to C#
>> >Date: Tue, 28 Feb 2006 15:31:47 -0800
>> >Lines: 8
>> >Message-ID: <A8**********************************@microsoft.co m>
>> >MIME-Version: 1.0
>> >Content-Type: text/plain;
>> > charset="Utf-8"
>> >Content-Transfer-Encoding: 7bit
>> >X-Newsreader: Microsoft CDO for Windows 2000
>> >Content-Class: urn:content-classes:message
>> >Importance: normal
>> >Priority: normal
>> >X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.0
>> >Newsgroups: microsoft.public.dotnet.general
>> >Path: TK2MSFTNGXA03.phx.gbl
>> >Xref: TK2MSFTNGXA03.phx.gbl microsoft.public.dotnet.general:189842
>> >NNTP-Posting-Host: TK2MSFTNGXA03.phx.gbl 10.40.2.250
>> >X-Tomcat-NG: microsoft.public.dotnet.general
>> >
>> >I have an application in managed C++, and a method in C# that I call. But
>> now
>> >I want to add the ability to tell the C# method a specific method in
my >> C++
>> >assembly to call back to. For example, to have the C++ call a sort

routine
>> in
>> >C#, and send it a compare method, which the C## would call back to. I know
>> >that within C# pointing to methods is done with delegates, but is it
>> possible
>> >between C++ and C#? Is there an example of this somewhere that

anyone >> knows
>> >of? Thanks for any help you can provide.
>> >
>> >
>>
>>
>

Mar 8 '06 #6

by: Minh Khoa | last post by:

Please give me more information about delegate and its usage? Why do i use it and when?

ASP.NET

Delegate question

by: ^MisterJingo^ | last post by:

Hi all, I've been trying to get my head around delegates. The book i'm using had a single example, not much explaination, and didn't show how to set up a delegate and pass variables in and out...

C# / C Sharp

Unregistering a Delegate

by: Jeff S | last post by:

Please consider this sample code: It registers a delegate with an event. p1.FirstNameChanged += new Person.NameChanged(p1_FirstNameChanged); Now the following code removes the delegate:...

C# / C Sharp

Where is the delegate?

by: Ant | last post by:

Hello, Very simple question but one I need clarified. Which part of the statement below is considered the 'delegate'? Is it the 'new System.EventHandler' or the btnAccept_Click? or is it...

C# / C Sharp

Generic event args in delegate?

by: David Veeneman | last post by:

I have several events that pass a value in their event args. One event passes an int, another a string, another a DateTime, and so on. Rather than creating a separate set of event args for each...

C# / C Sharp

Delegate comparisons

by: Quimbly | last post by:

I'm having some problems comparing delegates. In all sample projects I create, I can't get the problem to occur, but there is definitely a problem with my production code. I can't give all the...

.NET Framework

Looking to make something like a delegate...

by: matsi.inc | last post by:

I am looking to make something like a delegate that i can use in my projects but am having a hard time getting started. The behavior I am most interested in is how a delegate changes it's Invoke...

C# / C Sharp

Newbie Delegate Question

by: damiensawyer | last post by:

Hi, Can someone please explain to me something about delegates? My understanding is as follows. A delegate is basically an object that can hold a reference to a "method" somewhere. That is,...

C# / C Sharp

Generic Delegate Types explained (example)

by: raylopez99 | last post by:

Here is a good example that shows generic delegate types. Read this through and you'll have an excellent understanding of how to use these types. You might say that the combination of the generic...

C# / C Sharp

function pointer to a delegate

by: vcquestions | last post by:

Hi. Is there way to have a function pointer to a delegate in c++/cli that would allow me to pass delegates with the same signatures as parameters to a method? I'm working with managed code. ...

.NET Framework

How to turn on java script in a villaon keypad mobile phone

by: Charles Arthur | last post by:

How do i turn on java script on a villaon, callus and itel keypad mobile phone

Java

Migrating Website to Cloud - Emmanuel Katto

by: emmanuelkatto | last post by:

Hi All, I am Emmanuel katto from Uganda. I want to ask what challenges you've faced while migrating a website to cloud. Please let me know. Thanks! Emmanuel

General

Is that possible of reading the .csv file in column wise and the column have different lengths ?

by: Sonnysonu | last post by:

This is the data of csv file 1 2 3 1 2 3 1 2 3 1 2 3 2 3 2 3 3 the lengths should be different i have to store the data by column-wise with in the specific length. suppose the i have to...

C / C++

How to build RAID in BIOS?

by: Hystou | last post by:

There are some requirements for setting up RAID: 1. The motherboard and BIOS support RAID configuration. 2. The motherboard has 2 or more available SATA protocol SSD/HDD slots (including MSATA, M.2...

Computer Hardware

What is ONU?

by: marktang | last post by:

ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However,...

General

Problem With Comparison Operator <=> in G++

by: Oralloy | last post by:

Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers,...

C / C++

The easy way to turn off automatic updates for Windows 10/11

by: Hystou | last post by:

Overview: Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows...

Windows Server

Discussion: How does Zigbee compare with other wireless protocols in smart home applications?

by: tracyyun | last post by:

Dear forum friends, With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each...

General

Access Europe - Using VBA to create a class based on a table - Wed 1 May

by: isladogs | last post by:

The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome a new...

Microsoft Access / VBA

Similar topics