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POCan std::wfstream passed by-reference AND will I be able to use write() and read() properly?
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copied!<p>I use a self-made error/log-class for my project which is also be able to store/load itself into/from a file. To make it easier for me when handling more objects I want to pass a file stream by-reference to this function which then uses the write/read member of the stream.</p> <p>Save with:</p> <pre><code>in.open(L"XError.err",std::ios::in | std::ios::out | std::ios::binary | std::ios::trunc); </code></pre> <p>Load with:</p> <pre><code>in.open(L"XError.err",std::ios::in | std::ios::out | std::ios::binary); </code></pre> <p>For saving:</p> <pre><code>unsigned int HError::SaveToBufferW(std::wfstream& file) { _ErrorSaveStruct ess = {0}; ESS.IsUNICODE = true; ESS.ItemCount = 9999999; file.write((wchar_t*)&ess,sizeof(_ErrorSaveStruct) / sizeof(wchar_t)); return 0; } </code></pre> <p>For loading:</p> <pre><code>int HError::LoadFromBufferW(std::wfstream& file) { _ErrorSaveStruct ess = {0}; file.read((wchar_t*)&ess,sizeof(_ErrorSaveStruct) / sizeof(wchar_t)); return 0; } </code></pre> <p>I checked the file and found out that nothing but <strong>whitespaces</strong> is written. When I read/write a Unicode-string everything works and the string as well is readable in the file.</p> <p>Edit: here you go</p> <pre><code> struct _ErrorSaveStruct { unsigned int MsgSize; unsigned int TimeSize; unsigned int LastErrorSize; int ItemCount; int errState; bool InitMsg; bool IsUNICODE; }; </code></pre>

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