C++Talk.NET C++ language newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  wstring array?          C++Talk.NET Forum Index -> C++ Language (Moderated) View previous topic :: View next topic   Author Message Saurabh Aggrawal Guest Posted: Wed Dec 15, 2004 1:03 pm    Post subject: wstring array? Hi, On line nos. 24, 25, 26 24: wstring cfMethods[] = {{L"setLabel"},{L""}}; 25: wstring cfProperties[]= {{L"isVisible"},{L""}}; 26: wstring cfEvents[] = {{L"onLoad"},{L"onQueryTerminate"},{L"onTerminate"},{L""}}; i am getting the following errors: cframe.cpp(24) : error C2552: 'cfMethods' : non-aggregates cannot be initialized with initializer list 'std::basic_string<_E,_Tr,_A>' : Types with private or protected data members are not aggregate with [ _E=wchar_t, _Tr=std::char_traits<wchar_t>, _A=std::allocator<wchar_t> ] cframe.cpp(24) : error C2552: 'cfMethods' : non-aggregates cannot be initialized with initializer list 'std::basic_string<_E,_Tr,_A>' : Types with private or protected data members are not aggregate with [ _E=wchar_t, _Tr=std::char_traits<wchar_t>, _A=std::allocator<wchar_t> ] cframe.cpp(25) : error C2552: 'cfProperties' : non-aggregates cannot be initialized with initializer list 'std::basic_string<_E,_Tr,_A>' : Types with private or protected data members are not aggregate with [ _E=wchar_t, _Tr=std::char_traits<wchar_t>, _A=std::allocator<wchar_t> ] cframe.cpp(25) : error C2552: 'cfProperties' : non-aggregates cannot be initialized with initializer list 'std::basic_string<_E,_Tr,_A>' : Types with private or protected data members are not aggregate with [ _E=wchar_t, _Tr=std::char_traits<wchar_t>, _A=std::allocator<wchar_t> ] cframe.cpp(26) : error C2552: 'cfEvents' : non-aggregates cannot be initialized with initializer list 'std::basic_string<_E,_Tr,_A>' : Types with private or protected data members are not aggregate with [ _E=wchar_t, _Tr=std::char_traits<wchar_t>, _A=std::allocator<wchar_t> ] cframe.cpp(26) : error C2552: 'cfEvents' : non-aggregates cannot be initialized with initializer list 'std::basic_string<_E,_Tr,_A>' : Types with private or protected data members are not aggregate with [ _E=wchar_t, _Tr=std::char_traits<wchar_t>, _A=std::allocator<wchar_t> ] cframe.cpp(26) : error C2552: 'cfEvents' : non-aggregates cannot be initialized with initializer list 'std::basic_string<_E,_Tr,_A>' : Types with private or protected data members are not aggregate with [ _E=wchar_t, _Tr=std::char_traits<wchar_t>, _A=std::allocator<wchar_t> ] cframe.cpp(26) : error C2552: 'cfEvents' : non-aggregates cannot be initialized with initializer list 'std::basic_string<_E,_Tr,_A>' : Types with private or protected data members are not aggregate with [ _E=wchar_t, _Tr=std::char_traits<wchar_t>, _A=std::allocator<wchar_t> ] This compiler error is due to the reason: // initialize a CLR immutable value type that has a constructor System::DateTime dt = {2001, 4, 12, 22, 16, 49, 844}; // C2552 Question 1. How should i initialize an array of wstring? Question 2. And what is wrong with the statement below. wstring cfMethods[] = {{L"setLabel"},{L""}}; Respects, Saurabh Aggrawal [ See http://www.gotw.ca/resources/clcm.htm for info about ] [ comp.lang.c++.moderated. First time posters: Do this! ] Back to top Allan W Guest Posted: Thu Dec 16, 2004 1:46 pm    Post subject: Re: wstring array? Saurabh Aggrawal wrote: Quote: 24: wstring cfMethods[] = {{L"setLabel"},{L""}}; 25: wstring cfProperties[]= {{L"isVisible"},{L""}}; 26: wstring cfEvents[] = {{L"onLoad"},{L"onQueryTerminate"},{L"onTerminate"},{L""}}; The oversimplified answer is: wstring has a constructor, so you can't use {}-style initializers. However, the array DOES use {}-style initializers, so you have to use the outer set of {}'s! Write this instead (but leave off the periods at the beginning of each line, I added these to deal with Google's indent problems) .. wstring cfMethods[] = { .. wstring(L"setLabel"), .. wstring(L"") .. }; .. wstring cfProperties[]= { .. wstring(L"isVisible"), .. wstring(L"") .. }; .. wstring cfEvents[] = { .. wstring(L"onLoad"), .. wstring(L"onQueryTerminate"), .. wstring(L"onTerminate"), .. wstring(L"") .. }; [ See http://www.gotw.ca/resources/clcm.htm for info about ] [ comp.lang.c++.moderated. First time posters: Do this! ] Back to top kanze@gabi-soft.fr Guest Posted: Thu Dec 16, 2004 2:06 pm    Post subject: Re: wstring array? Saurabh Aggrawal wrote: Quote: On line nos. 24, 25, 26 24: wstring cfMethods[] = {{L"setLabel"},{L""}}; 25: wstring cfProperties[]= {{L"isVisible"},{L""}}; 26: wstring cfEvents[] = {{L"onLoad"},{L"onQueryTerminate"},{L"onTerminate"},{L""}}; i am getting the following errors: cframe.cpp(24) : error C2552: 'cfMethods' : non-aggregates cannot be initialized with initializer list Why the extra braces? That's almost surely your problem. You have a one dimensional array of a non-aggregate type. Initializing it with something like: { L"message", L"" } ; should work. When you add the extra braces, you are basically trying to initialize a single wstring with { L"message" }. A wstring is NOT an aggregate, and cannot be initialized with a brace enclosed list. -- James Kanze GABI Software http://www.gabi-soft.fr Conseils en informatique orientée objet/ Beratung in objektorientierter Datenverarbeitung 9 place Sémard, 78210 St.-Cyr-l'École, France, +33 (0)1 30 23 00 34 [ See http://www.gotw.ca/resources/clcm.htm for info about ] [ comp.lang.c++.moderated. First time posters: Do this! ] Back to top Ben Hutchings Guest Posted: Thu Dec 16, 2004 6:20 pm    Post subject: Re: wstring array? Saurabh Aggrawal wrote: Quote: Hi, On line nos. 24, 25, 26 24: wstring cfMethods[] = {{L"setLabel"},{L""}}; 25: wstring cfProperties[]= {{L"isVisible"},{L""}}; 26: wstring cfEvents[] = {{L"onLoad"},{L"onQueryTerminate"},{L"onTerminate"},{L""}}; i am getting the following errors: snip Question 1. How should i initialize an array of wstring? You should only use braces around the array initialisers, not around the wstring initialisers, e.g.: wstring cfMethods[] = {L"setLabel",L""}; Quote: Question 2. And what is wrong with the statement below. wstring cfMethods[] = {{L"setLabel"},{L""}}; This is interpreted as aggregate initialisation (the syntax you would use to initialise structs in C), which is only allowed for type without constructors. -- Ben Hutchings This sentence contradicts itself - no actually it doesn't. [ See http://www.gotw.ca/resources/clcm.htm for info about ] [ comp.lang.c++.moderated. 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