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How to add filesystem header file of c++ in vscode

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How to add filesystem header file of c++ in vscode 1.first Goto the vs code open  your project in it then goto the extesion and click on gear symbol of setting 2.next step Go to the extension setting and then in search bar seach for Cpp Standard.Change it into version higher than gnu++17 i am using here latest gnu++23(if your compiler is mingw installed in your pc)   3.Now Goto your souce code file in vs code now in top search bar which is 🔎projects[Administrator] search for >C/C++:Edit Confiugurations(UI) 4.After seaching scroll that page and change cpp standard once again  6.In that file search for    c_cpp_properties.json  click on it change the json file according to your compiler path Thanks
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  Title : " Understanding Memory Management in C++: CoTaskMemAlloc and CoTaskMemFree with BSTR Strings " Memory Management, CoTaskMemAlloc, CoTaskMemFree, BSTR, C++, Dynamic Memory Allocation Introduction: Memory management is a crucial aspect of programming in C++. Properly allocating and deallocating memory resources helps ensure that your program runs efficiently and avoids memory leaks. In this blog post, we'll explore the use of CoTaskMemAlloc and CoTaskMemFree , particularly in the context of handling BSTR strings in C++. We will explain these functions, their role in memory management, and provide a code example. Understanding CoTaskMemAlloc and CoTaskMemFree: CoTaskMemAlloc and CoTaskMemFree are memory allocation and deallocation functions provided by the Component Object Model (COM) library. They are commonly used when working with BSTR strings, which are a special type of string used in COM programming. CoTaskMemAlloc : CoTaskMemAlloc is used to allocate mem...
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How to Get Printer Information in C++|How to convert char * to BSTR* in C++

In this blog post, we will discuss how to get printer information in C++. We will use the following code: C++ STDMETHODIMP CSimpleCom::Get_PrinterInfo (BSTR* InfoBuffer) { AFX_MANAGE_STATE(AfxGetStaticModuleState()); // TODO: Add your dispatch handler code here try { int a = 0 ; char * str = ( char *) memset ( malloc ( 1 ), '\0' , 1 ); a = EV_Get_PrinterInfo(str); if (a == 0 ) { int len = strlen (str) + 1 ; OLECHAR* wstr = new OLECHAR[len]; MultiByteToWideChar(CP_ACP, 0 , str, len, wstr, len + 1 ); *InfoBuffer = SysAllocString(wstr); } } catch (...) { } return S_OK; } Use code with caution.  Learn more content_copy Explanation: The first thing we do is declare a function called Get_PrinterInfo() . This function takes a pointer to a BSTR string as its parameter. The BSTR string will be used to store the printer information. Next, we use the AFX_MANAGE_STATE() macro to manage the state of the application. This macro is nec...
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ATL COM Compiler Error C2259

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  ATL COM Title: ATL COM Error 2259: Resolving with the Power of CHAR Introduction: In the realm of ATL (Active Template Library) COM development, encountering errors is a natural part of the journey. One such enigma is ATL COM Error 2259, which cryptically states "Cannot Instantiate Abstract Class." In this blog post, we embark on a quest to decode this error and unveil a unique solution that involves harnessing the power of the CHAR datatype. Our journey is inspired by a real-life scenario faced by a seasoned developer, Alex. Decoding Error 2259: "Cannot Instantiate Abstract Class" holds a key message: an attempt to create an instance of an abstract class, which by design, lacks complete implementations for its methods. Understanding this concept is pivotal to unlocking the solution. The Charmed Encounter: Let's rejoin Alex on his quest. In his investigation of "SimpleATLCom," Alex discovers a fascinating connection between the error and the datatype...
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