473,395 Members | 2,423 Online
Bytes | Software Development & Data Engineering Community
Post Job

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 473,395 software developers and data experts.

Allocating memory in a .NET C++ DLL

I've created a .NET DLL using Visual Studio 2003 which will be referenced by a C# program. I'm able to link the two together just fine now and make calls. The problem is I need the DLL to allocate memory and pass it back to the C# program.

I can't see to use either new or malloc inside that DLL though as the normal libraries aren't compiled in. Sorry if this is a FAQ, but I'd definitely appreciate it if someone can help me work this out.
Jul 21 '05 #1
3 1208

Are you using managed or unmanaged C++? How are you calling the
functions from C#?

Mattias

--
Mattias Sjögren [MVP] mattias @ mvps.org
http://www.msjogren.net/dotnet/ | http://www.dotnetinterop.com
Please reply only to the newsgroup.
Jul 21 '05 #2
I created a .NET class library, which says it's using managed extension for C++. I only chose that one because I'm calling from C#, which is .NET, so it seemed to make sense. If there's a better choice I'm happy to switch.

From my C# program I'm doing a [DllImport ("")] of each of my functions. Right now they're each their own functions. I'd really rather the C++ library expose a class that I can call from C#, but I've no idea how to do that yet.
"Mattias Sjögren" wrote:

Are you using managed or unmanaged C++? How are you calling the
functions from C#?

Mattias

--
Mattias Sjögren [MVP] mattias @ mvps.org
http://www.msjogren.net/dotnet/ | http://www.dotnetinterop.com
Please reply only to the newsgroup.

Jul 21 '05 #3
The need for this just disappeared. I finally have everything working from C# directly.

Jul 21 '05 #4

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

6
by: soni29 | last post by:
hi, i'm reading a c++ book and noticed that the author seems to allocate memory differently when using classes, he writes: (assuming a class called CBox exists, with member function size()): //...
4
by: Sameer | last post by:
Hello Group, This is one problem in programming that is troubling me. there is a segmentation fault just before creating memory to a structure ..i.e, just after the "allocating memory "...
3
by: Erik S. Bartul | last post by:
lets say i want to fill up a multidimentional array, but i wish to allocate memory for it on the fly. i assume i declare, char **a; but how do i allocate memory for the pointers, so i can...
15
by: fix | last post by:
Hi all, I am writing a program using some structs, it is not running and I believe it is because there's some memory leak - the debugger tells me that the code causes the problem is in the malloc...
7
by: boss_bhat | last post by:
Hi all , I am beginner to C programming. I have a defined astructure like the following, and i am using aliases for the different data types in the structure, typedef struct _NAME_INFO {...
3
by: Tod Birdsall | last post by:
Hi All, The organization I am working for has created a new corporate website that used Microsoft's Pet Shop website as their coding model, and dynamically served up content, but cached each...
19
by: allanallansson | last post by:
Hi i would like some guidelines for a experiment of mine. I want to experiment with the swap and ctrl-z in linux. And for this i want to create a c program that allocates almost all the free memory...
3
by: Kane | last post by:
When you create node 1 you allocate memory and link it Again when you create node 2 you would allocate memory for that node in a different section of the code. Is there more efficient way where I...
6
by: arashmath | last post by:
Hi everyone, I have a problem with large dynamic memory allocating. this is my code (in briefness): #include <stdio.h> #include <mem.h> #include <assert.h> #define SML_BOUNDS_CHECK
10
by: Chris Saunders | last post by:
Here is the declaration of a struct from WinIoCtl.h: // // Structures for FSCTL_TXFS_READ_BACKUP_INFORMATION // typedef struct _TXFS_READ_BACKUP_INFORMATION_OUT { union { //
0
by: ryjfgjl | last post by:
In our work, we often receive Excel tables with data in the same format. If we want to analyze these data, it can be difficult to analyze them because the data is spread across multiple Excel files...
0
by: emmanuelkatto | last post by:
Hi All, I am Emmanuel katto from Uganda. I want to ask what challenges you've faced while migrating a website to cloud. Please let me know. Thanks! Emmanuel
1
by: nemocccc | last post by:
hello, everyone, I want to develop a software for my android phone for daily needs, any suggestions?
1
by: Sonnysonu | last post by:
This is the data of csv file 1 2 3 1 2 3 1 2 3 1 2 3 2 3 2 3 3 the lengths should be different i have to store the data by column-wise with in the specific length. suppose the i have to...
0
by: Hystou | last post by:
There are some requirements for setting up RAID: 1. The motherboard and BIOS support RAID configuration. 2. The motherboard has 2 or more available SATA protocol SSD/HDD slots (including MSATA, M.2...
0
marktang
by: marktang | last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However,...
0
by: Hystou | last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can...
0
Oralloy
by: Oralloy | last post by:
Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers,...
0
tracyyun
by: tracyyun | last post by:
Dear forum friends, With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.