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Questions tagged [unmanaged]

Unmanaged refers to Windows code that is independent of the Common Language Runtime(CLR). COM components, ActiveX components, and Win32 API functions are examples of unmanaged code.

1488 questions
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Delegates and native methods

Here is a piece of code: private static bool CreateDelegates () { IntPtr ptr; //--- SoundTouch: createInstance ptr = Kernel32Methods.GetProcAddress (libHandle, "_soundtouch_createInstance@0"); if (ptr != IntPtr.Zero) { …
apocalypse
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What do HRESULT, DWORD, and HANDLE mean in unmanaged code?

I was reading about Marshaling. and im confused because what does mean this in unmanaged code. HRESULT, DWORD, and HANDLE. The original text is: You already know that there is no such compatibility between managed and unmanaged environments. In…
user1495049
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How to make Windows Desktop (Screen) blur or dull Using C# Unmanaged code

I want to make the desktop dull/blur in my application using c# unmanaged code like User32.dll and GDI32.dll. Which function do I need to call in the User32.dll and Gdi32.dll?
user1651818
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Make class pointer in c# store the data from cpp side

I'm writing a c# / cpp mixed program and need to call some cpp functions inside c#. For most of the functions, I can just use PInvoke approach to call extern cpp funcs. // cpp part void compute(DataWrapper* dataHolderFromCSharp){ …
X.Arthur
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How to use a struct defined in C++ CLR in unmanaged C++?

I have a struct defined in Managed.h and I would like to be able to use it inside a different project, which is unmanaged C++ (let's call it Unmanaged.h). I tried referencing the dll, a few different #includes, but I couldn't make it work. Is there…
Olivier Giniaux
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How to correctly declare unmanaged DLL function?

I'm trying to call an unmanaged DLL's function in my C# app. The function declaration is this. The function writes to file the data from an acquisition board (i.e., from arrays real_data and imag_data). I'm using the following declaration, but the…
Cristian M
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C++/CLR (C++ Interop) Basic Questions :)

I've some questions about C++/CLR C++ Interop (basically mixing C++ unmanaged and managed code). If I create an application with C++/CLR and I write unmanaged and managed code, for example: int main(int argc, char*argv[]) { int a = 30; …
BeastLe9enD
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AccessViolationException when try to read memory from pointer in C# using Marshal class

I try to create a program that will programatically set Windows Color Management to archive an effect like f.lux as a hobby project. **The definition of WINAPI WcsGetDefaultColorProfileSize. ** BOOL WINAPI WcsGetDefaultColorProfileSize( _In_ …
Suttisak
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Translate values of UnmanagedType enumeration to their managed type equivalents

I'm trying to do this helper function for P/Invoking, the purpose is help determining which should be the most appropriated managed type to declare for specific marshalings of a windows API definition. I've taken the info from here: UnmanagedType…
ElektroStudios
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How to let java applet download file

I am new to Java Applets. I have the following situation: the client asks for a Java Applet to do Function1, i already have this Function1 developed and tested but in C#. so i say that i can use my C# dlls in Java applet. I already tried to use…
Mohamed Al-Hosary
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C# - return type int* from unmanaged code

I am programming a small application to talk with an external device via API (both in 64bit). I got the following method from the guide I am trying to use: int* GetRevision( void* cu_ptr, int num) I tried to do PinVoke…
REMberry
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Windows Forms: Unmanaged code calls an internal thread that causes 'Access violation'

So I'm using some native code (only access to the DLLs; no source code) that causes my program to crash. Essentially, I try to connect to a server which initially connects fine. There is a connection object provided by the API which is used as the…
furssher
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DLL import failure in using WinDivert

I am going to design a program using WinDivert to manipulate the network traffic. The language I use is C++ and the program is designed under Visual Studio 2008. Firstly I create a project in visual C++ CLR (Windows Forms Application) so I can…
user3704347
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How to expose native to managed - C++/CLI on x64 Platform

I have a static lib in my project and I want to use this in my .net project. I have taken this project as a starting point. Exposing native to managed - C++/CLI My use case is the Second Approach. So far everything works, but when I change the…
Diddlik
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What is the minimum needed to make my dll match the signature of another?

I'm attempting to proxy an existing dll that I don't have all the source code to. I'm using a tool I found here: https://github.com/mavenlin/Dll_Wrapper_Gen Using it, I was able to create a Visual Studio project and build it successfully. However,…
John O
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