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1. CComBSTR Class | Microsoft Learn
microsoft.com
Link: https://learn.microsoft.com/en-us/cpp/atl/reference/ccombstr-class?view=msvc-170
Description: WEBThe CComBSTR class is a wrapper for BSTR s, which are length-prefixed strings. The length is stored as an integer at the memory location preceding the data in the string. A BSTR is null-terminated after the last counted character but may also contain null characters embedded within the string.
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2. Programming with CComBSTR (ATL) | Microsoft Learn
microsoft.com
Link: https://learn.microsoft.com/en-us/cpp/atl/programming-with-ccombstr-atl?view=msvc-170
Description: WEBAug 5, 2021 · The ATL class CComBSTR provides a wrapper around the BSTR data type. While CComBSTR is a useful tool, there are several situations that require caution. Conversion Issues. Scope Issues. Explicitly Freeing the CComBSTR Object. Using CComBSTR Objects in Loops. Memory Leak Issues. Conversion Issues
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3. How to: Convert Between Various String Types | Microsoft Learn
microsoft.com
Link: https://learn.microsoft.com/en-us/cpp/text/how-to-convert-between-various-string-types?view=msvc-170
Description: WEBOct 3, 2022 · Feedback. This article shows how to convert various Visual C++ string types into other strings. The strings types that are covered include char *, wchar_t*, _bstr_t, CComBSTR, CString, basic_string, and System.String. In all cases, a copy of the string is made when converted to the new type.
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4. Understanding CComBSTR assignment operators - Stack Overflow
stackoverflow.com
Link: https://stackoverflow.com/questions/3559990/understanding-ccombstr-assignment-operators
Description: WEBAug 24, 2010 · You will need to manually free myBSTR to avoid a leak. The simplest approach to fix this scenario is to skip the middle man SysAllocString function. CComBSTR myCComBSTR = L"MYBSTR"; On the other hand if you have a BSTR and want to have a CComBSTR take owner ship of it then use attach method.
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5. CComBSTR - GitHub
github.com
Link: https://github.com/MicrosoftDocs/cpp-docs/blob/master/docs/atl/reference/ccombstr-class.md
Description: WEBCComBSTR() throw();\nCComBSTR(const CComBSTR& src);\nCComBSTR(REFGUID guid);\nCComBSTR(int nSize);\nCComBSTR(int nSize, LPCOLESTR sz);\nCComBSTR(int nSize, LPCSTR sz);\nCComBSTR(LPCOLESTR pSrc);\nCComBSTR(LPCSTR pSrc);\nCComBSTR(CComBSTR&& src) throw(); // (Visual Studio 2017)\n
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6. CComVariant vs. _variant_t, CComBSTR vs. _bstr_t
stackoverflow.com
Link: https://stackoverflow.com/questions/2288834/ccomvariant-vs-variant-t-ccombstr-vs-bstr-t
Description: WEBFeb 18, 2010 · 17. _variant_t and _bstr_t are provided by the compiler as COM support classes and get used when you use constructs like #import . You can use them if you like. CComVariant and CComBSTR are provided by the ATL libraries. Whether you use the COM Support classes or the ATL classes is up to you.
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7. cpp-docs/docs/atl/programming-with-ccombstr-atl.md at main
github.com
Link: https://github.com/MicrosoftDocs/cpp-docs/blob/main/docs/atl/programming-with-ccombstr-atl.md
Description: WEBAlthough several CComBSTR methods will automatically convert an ANSI string argument into Unicode, the methods will always return Unicode format strings. To convert the output string back to ANSI, use an ATL conversion class. For more information on the ATL conversion classes, see ATL and MFC String Conversion Macros.
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8. Why use CComBSTR instead of just passing a WCHAR*?
stackoverflow.com
Link: https://stackoverflow.com/questions/1743376/why-use-ccombstr-instead-of-just-passing-a-wchar
Description: WEBNov 17, 2009 · BSTR is not the same as WCHAR[]. BSTR values are prefixed with their length, as well as null-terminated. If you're dealing with in-process objects that are written in C or C++, you'll usually get away with this, because the C/C++ code will probably assume that your BSTR is a null-terminated wide character string.
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9. c++ - Convert from Wstring to CComBstr - Stack Overflow
stackoverflow.com
Link: https://stackoverflow.com/questions/8645068/convert-from-wstring-to-ccombstr
Description: WEBDec 27, 2011 · CComBSTR(. LPCSTR pSrc. ); MSDN. So, you could convert like this: CComBSTR BstrAddress(strID.size(), strID.data()); answered Dec 27, 2011 at 13:22. 9dan. 4,242 2 31 44.
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10. c++ - How to compare two BSTRs or CComBSTRs? - Stack Overflow
stackoverflow.com
Link: https://stackoverflow.com/questions/1430061/how-to-compare-two-bstrs-or-ccombstrs
Description: WEBJul 22, 2016 · To properly compare BSTR values which may contain embedded null characters you need to use something like this: bool EqualBSTR(const BSTR String1, const BSTR String2, bool IgnoreCase = false) {. if (String1 == nullptr || …
