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Iserviceprovider Error

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Cannot Use This Indirection On Type Iserviceprovider

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Error C2872 Ambiguous Symbol

programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Issue in compiling with marshal.h : error C2872: 'IServiceProvider' : ambiguous symbol up vote 18 down vote favorite 2 I am trying to use the marshalling library in my C++/CLI project. When compiled with #include I get the error error c2872: 'idataobject' : ambiguous symbol error C2872: 'IServiceProvider' : ambiguous symbol. Most of the resolutions seems to be suggesting moving #include like the one here -> Ambiguous references, but I dont have those includes. All I have is: using namespace System; using namespace System::Configuration; using namespace std; #include How do I debug this issue ? c++-cli share|improve this question asked Oct 22 '10 at 20:21 anivas 3,93231729 add a comment| 1 Answer 1 active oldest votes up vote 26 down vote accepted You do, indirectly, marshal.h includes it. It dumps an enormous amount of identifiers in the global namespace. The macros are especially awkward, lots of them match names used in the framework. Lots of things that marshal.h does can be done by the Marshal class as well. But I can't help you with that, you didn't mention why you want to use it. You can solve this particular mishap by putting the #include directive before the using statements: #include using namespace System; using namespace

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System::string To Std::string

Channel 9 Documentation APIs and reference Dev centers Samples Retired content We’re sorry. The content you requested has been removed. You’ll be auto redirected in 1 second. Migration Guide Part II: PInvoke and COM Interoperability Naming Conflicts Naming Conflicts Ambiguous References Ambiguous References Ambiguous References Ambiguous References Macros and the Preprocessor TOC Collapse the table of content http://stackoverflow.com/questions/4000663/issue-in-compiling-with-marshal-h-error-c2872-iserviceprovider-ambiguous Expand the table of content This documentation is archived and is not being maintained. This documentation is archived and is not being maintained. This documentation is archived and is not being maintained. Ambiguous References Visual Studio .NET 2003 Sometimes the names of the .NET Framework Library classes, interfaces, or members are the same as those defined https://msdn.microsoft.com/en-us/library/aa712965(v=vs.71).aspx in commonly used header files such as windows.h. This can lead to naming conflicts or ambiguities in applications that involve interoperating with native code. The following example demonstrates an ambiguous name. Example Copy #using using namespace System; #include int main() { return 0; } In the above example, the using declaration in using namespace System; makes names from the System namespace accessible to the entire program. One of these names is IServiceProvider. However, windows.h indirectly contains #include servprov.h, which has the following declaration. Copy typedef interface IServiceProvider IServiceProvider; Since the using declaration precedes the #include directive, the name IServiceProvider becomes ambiguous. Solving Ambiguous References One way to overcome this problem is to include the unmanaged headers first, before any managed using declarations. In this order, the compiler can process the unmanaged headers first and the ambiguity does not occur unless the code uses one of the symbols. Example Copy #include #using using namespace System; int main() { // System::IServiceProvider or IServiceProvider via windows.h? ISer

easy but it wasn't working. [Note: Microsoft https://qualapps.blogspot.com/2008/07/using-atlstrh-in-managed-project.html factored CString from MFC several years ago, so CString can now be used standalone. Super handy class.]I started with what I thought was a reasonable statement:
#include "cstringt.h"
This gave me numerous errors, starting with:C:\Program Files\Microsoft SDKs\Windows\v6.0\Include\ocidl.h(6238) : error C2872: 'IServiceProvider' : ambiguous symbol
C:\Program Files\Microsoft Visual ambiguous symbol Studio 8\VC\atlmfc\include\atlcomcli.h(370) : error C2872: 'DISPPARAMS' : ambiguous symbolWith a little research, I determined I was using the wrong include file. So I switched to:
#include "atlstr.h"
When I tried to do that, I received similar errors:
C:\Program Files\Microsoft SDKs\Windows\v6.0\Include\ocidl.h(6238) : error C2872: 'IServiceProvider' : ambiguous symbol
C:\Program Files\Microsoft Visual Studio 8\VC\atlmfc\include\atlcomcli.h(370) : error C2872: 'DISPPARAMS' : ambiguous symbol
Several other posts inquiring about the same errors received no answers.The problem is caused because the Microsoft SDK (aka Platform SDK) and mscorlib both have definitions for these classes.The solution is to take the #include file that caused the problem and make sure it is placed before any "using namespace" statement. In my case, that meant moving #include near the top of stdafx.h. Posted by Jim Beveridge at 12:05 PM 12 comments: GoogledMay 7, 2009 at 12:31 AMFinally one quick solution after lot of googling. Thank you very much.ReplyDeleteAnonymousMay 19, 2009 at 8:06 AMThanks!ReplyDeleteAnonymousJune 1, 2009 at 11:53 AMThank you so much....it was a HUGE help!!ReplyDeleteAnonymousNovember 23, 2009 at 5:37 PMAwesome, but I still don't fully understand why it works.ReplyDeleteAnonymousSeptember 20, 2010 at 5:59 AMHi JimI

 

idataobject ambiguous symbol error

Idataobject Ambiguous Symbol Error p Languages Windows Desktop Development C Standards Extensions and Interop Question Sign in to vote Hello p Iserviceprovider Ambiguous Symbol Servprov H p I have a problem with including include windows h in C CLR cannot use this indirection on type iserviceprovider project it just give me error all in the same file objidl h which i did not error c filetime ambiguous symbol build it Build by Microsoft like Error error C 'IDataObject' ambiguous symbol C Program Files Microsoft Visual Studio VC PlatformSDK include objidl h Error error C ' ' cannot use this p

iserviceprovider ambiguous symbol error

Iserviceprovider Ambiguous Symbol Error p here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business p Iserviceprovider Ambiguous Symbol Servprov H p Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs cannot use this indirection on type iserviceprovider Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of million programmers just p Error C filetime Ambiguous Symbol p like