Idataobject Ambiguous Symbol Error

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Error C2872 Ambiguous Symbol

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: 'IServiceProvider' : ambiguous symbol. Most of the resolutions seems system::string to std::string 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 System::Configuration; share|improve this answer answered Oct 22 '10 at 20:36 Hans Passant 655k819631606 I am trying to convert String ^ to co

unmanaged code I get the compiler error: "'IDataObject' : ambiguous symbol". How do I resolve this? Thanks. c DotNetUser 69 posts since Jun 2005 Community Member 3Contributors 4Replies 6Views 11 YearsDiscussion Span 11 Years Ago Last Post by Dave Sinkula 0 Narue 5,707 11 Years Ago And the rest of the error is? Post your entire compiler output when you build the application. 0 Discussion Starter DotNetUser 11 Years Ago 1) error C2872: 'IDataObject' : ambiguous symbol 2) fatal error C1903; unable to recover from previous error(s); stopping compilation 3) warning C4935: assembly access specifier modified from 'public 4) warning C4935: assembly http://stackoverflow.com/questions/4000663/issue-in-compiling-with-marshal-h-error-c2872-iserviceprovider-ambiguous access specifier modified from 'public File - C:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\PlatformSDK\Include\ObjIdl.h for all 4 errors typedef /* [unique] */ IDataObject *LPDATAOBJECT; -- selected code for Error1 IDataObject : public IUnknown -- selected code for Error2 typedef interface IDataObject IDataObject; -- selected code for Error3 typedef interface IMessageFilter IMessageFilter; -- selected code for Error4 0 Discussion Starter DotNetUser 11 Years Ago The error has been resolved. Move https://www.daniweb.com/programming/software-development/threads/29742/idataobject-ambiguous-symbol-error all 'using namespace XXXX' from .h to .cpp 0 Dave Sinkula 2,398 11 Years Ago Thank you for taking the time to post the resolution to your problem. c This question has already been answered. Start a new discussion instead. Message Insert Code Snippet Alt+I Code Inline Code Link H1 H2 Preview Submit your Reply Alt+S Ask a Different Software Development Question Related Articles Arrayclass for integer and float types. 1 reply In below code snippet , I am trying to add the intefeger and float values in Array template but was surprised to see below output … Histogram 2 replies Can someone help me please find the ploblem with this program ? I know it's a question of a misssing pointer but i don't know … bits 13 replies typedef struct { unsigned char Val1; unsigned char Val2; unsigned char Val3; unsigned char ValArray1[2]; unsigned char ValArray2[2]; unsigned char ValArray3[2]; unsigned char Val4; unsigned … HELP!So I'm write the mines game and so far I have just some of the coding 4 replies Is there a way I can fix the way ji get neighbors of a 2d coordinate? """6.009 Lab 5 -- Mines""" def dump(game): """Print a … gro

Post your question and get tips & solutions from a community of 418,570 IT Pros & Developers. It's quick & easy. IDataObject : ambiguous symbol error P: n/a nicolas.hilaire Hi https://bytes.com/topic/net/answers/456267-idataobject-ambiguous-symbol-error group, when using unmanaged class with my managed app, I've seen errors when https://bytes.com/topic/net/answers/458189-error-2-error-c2872-idataobject including (for example) . One of theses erros is : IDataObject : ambiguous symbol error I've seen somewhere that to avoid this error, i've to remove all "using namespace XXXXX" from .h, and move it to .cpp. This is working ... but, i would like to know why such an error ? Thanks in advance ambiguous symbol for any explanation Best, Nicolas H. Feb 12 '06 #1 Post Reply Share this Question 3 Replies P: n/a Holger Grund wrote when using unmanaged class with my managed app, I've seen errors when including (for example) . One of theses erros is : IDataObject : ambiguous symbol error I've seen somewhere that to avoid this error, i've to remove all "using namespace XXXXX" from .h, and move idataobject ambiguous symbol it to .cpp. This is working ... but, i would like to know why such an error ? Several distinct entities (probably types) named IDataObject from different scopes have been introduced into the current scope. Windows Shell declares an IDataObject as a native interface (=struct), the base class library has several definitions of IDataObject as a managed interface. All these types are different. When you say using namespace System::Windows::Forms IDataObject could refer to the IDataObject in the global scope (from objidl.h) or to System::Windows::Forms::IDataObject. You can use qualified names to refer to the entity. For instance, ::IDataObject // the one in the global scope System::Windows::Forms::IDataObject // the other one Windows::Forms::DataObject // same as above, assumes // using namespace System -hg Feb 12 '06 #2 P: n/a nicolas.hilaire i never use IDataObject for myself, but maybe it's used elsewhere But i can't understand why moving the references to the cpp files can solve this error ... Feb 12 '06 #3 P: n/a Holger Grund wrote i never use IDataObject for myself, but maybe it's used elsewhere But i can't understand why moving the references to the cpp files can solve this error ... C and C++ are one-pass models. The compiler only considers the us

your question and get tips & solutions from a community of 418,570 IT Pros & Developers. It's quick & easy. Error 2 error C2872: 'IDataObject' P: n/a Rick Error 2 error C2872: 'IDataObject' : ambiguous symbol C:\Archivos de programa\Microsoft Visual Studio 8\VC\PlatformSDK\include\objidl.h 7408 this is the error i got by mix managed and unmanaged code all i do to get this is this #include "frmUsrPass.h" //this is managed code, no problem #include "client.cpp" // this is unmanaged code #include "\utils\utils.h" // this too #pragma once namespace SknrF { using namespace System; using namespace System::ComponentModel; using namespace System::Collections; using namespace System::Windows::Forms; using namespace System::Data; using namespace System::Data::SqlClient; using namespace System::Drawing; using namespace System::Net; using namespace System::Net::NetworkInformation; ..... } if i put between /* */ client and utils, i can compile the project, but if not i got the error, i googled and find just this as possible solution Move all 'using namespace XXXX' from .h to .cpp http://www.daniweb.com/techtalkforum...d.php?p=152302 but it doesn't works, and this Both the .NET Windows Forms and COM define an IDataObject interface that are distinct. You should fully qualify this interface. If you mean to use the ...NET "version" of the IDataObject interface, use System::Windows::Forms::IDataObject. at http://www.dotnet247.com/247referenc...43/218228.aspx but how can i select just one IDataObject?? what setting is this?? Thanks!!! Feb 16 '06 #1 Post Reply Share this Question 1 Reply P: n/a Tamas Demjen Rick wrote: Both the .NET Windows Forms and COM define an IDataObject interface that are distinct. You should fully qualify this interface. If you mean to use the ..NET "version" of the IDataObject interface, use System::Windo