StructLayout | Visual Studio Extension for C++ struct memory layout | Code Editor library

I am currently integrating the Steamworks SDK into my game and have a couple of methods which require to pass a struct as a pointer, for example:

I read some posts (that don't exist anymore) and came up with the following code that generates a PFX certificate. It works fine to the part of creating this self-signed certificate.

I'm trying to expand this to crate a self-signed certificate and from that one, create it's "childs". I tryed many things but none of then actually export the certificate with it's chain as result.

The current code get's to a point of exporting a PFX with a containing CA and importing it would include both certificates, but not associate then with each other.

It's kind of a long code, but the action should work on the last "Create" funcion of it.

In C, if I have the following struct Data:

I came across something very much like the below at work. I have never worked with a C# codebase that makes such heavy use of structs before.

I have used fixed before to prevent the garbage collector from moving things while I work on something unsafe using pointers. But I've never seen it used while taking a pointer and passing it to a Span like this and then using the Span outside of the fixed statement.

Is this okay? I guess since Span is managed, once we pass the location to it, then if the GC moves the location of MyStruct, it should get the new location okay right?

I have a C++ MFC application which consumes C# COM wrapper. The issue is whenever I invoke a function inside wrapper, I am experiencing memory leak. Can anyone explain how to clean up the allocations that are made within the C# COM wrapper.

Below code blocks mimic what I was trying to do, can anyone provide me the references/rightway to pass the structure object/ clean up the memory allocation

C# wrapper exposed as COM

I am trying to write C# code that, running in an elevated process, creates a non-elevated process. The (only) answer to the SO question How to call CreateProcess() with STARTUPINFOEX from C# and re-parent the child contains ready-to-use code. I copied this code, but instead of creating a process, it throws an AccessViolationException. The exception text Attempted to read or write protected memory. This is often an indication that other memory is corrupt. does not help to identify the culprit, however from low-level debugging I can see that the processor is trying to read from memory at a very small address like 0x00000004 which, of course, goes wrong.

The code, briefly explained, retrieves a handle of the desktop process, then calls InitializeProcThreadAttributeList and UpdateProcThreadAttribute to initialize the respective fields of a STARTUPINFOEX struct which is then passed into the CreateProcess Windows API function. CreateProcess should then create the new process as a child of the desktop process.

This function expects in its 9th parameter a pointer to either a STARTUPINFO or a STARTUPINFOEX (which contains a STATUPINFO at its begin). If it's a STARTUPINFOEX, the 6th parameter should contain the EXTENDED_STARTUPINFO_PRESENT flag.

When I don't pass the EXTENDED_STARTUPINFO_PRESENT flag so that CreateProcess think it's being passed just a STARTUPINFO, all works fine except that the created process is elevated (as is the calling process). However, as soon as I add this flag, the access violation occurs. For hours I have tried modifying parameter attributes etc., but the problem persists. I have the essentially same code running in C++, so I know it can work. What am I doing wrong?

The code below doesn't contain elaborated error checking, but it should compile and demonstrate the problem out of the box.

I do stuff where having contiguous data is required. Now with C# 10, we can do public readonly record struct.

I like having the automatic ToString feature that records have, among others, so having that done for me is nice.

As such, are the following equivalent?

I am trying to add getters and setters to this struct, so I can use it as a listView items source. The problem is, this causes MarshalAs to be invalid thus not allowing compilation. What would the best option be to fix this?

Attribute 'MarshalAs' is not valid on this declaration type. It is only valid on 'field, parameter, return' declarations.**

I'm trying to implement my own async method builder for a custom awaitable type. My awaitable type is just a struct containing a ValueTask.

The problem is my asynchronous method builder only works when it's a class or compiled in Debug mode, not a struct and in Release mode.

Here's a minimal, reproducible example. You have to copy this code into a new console project on your local PC and run it in Release mode; .NET Fiddle apparently runs snippets in Debug mode. And of course this requires .Net 5+: https://dotnetfiddle.net/S6F9Hd

This code completes successfully when CustomAwaitableAsyncMethodBuilder is a class or it is compiled in Debug mode. But it hangs and fails to complete otherwise: