快速的C ++程序，C＃GUI，可能吗？ [英] Fast C++ program, C# GUI, possible?

问题描述

我寻找到开发将在每秒约2000行（帧）处理从线扫描相机数据的应用程序。对于这种实时的应用程序，我觉得C / C ++是要走的路。 （这是我的感觉，和其他人会同意托管代码只是并不适合这项工作。）

I'm looking into developing an application that will process data from a line-scan camera at around 2000 lines (frames) per second. For this real-time application, I feel that C/C++ are the way to go. (It is my feeling, and others will agree that Managed code just isn't right for this task.)

不过，我已经做了的非常小MFC或任何其他的C ++图形用户界面。我真是越来越做C＃的GUI非常出色，虽然。

However, I've done very little MFC, or any other C++ GUI. I am really getting to do C# GUIs very well, though.

所以他很自然地我写在C / C ++的数据密集型代码，并在GUI C＃。该GUI将用于建立/校准/在线监测（也可能是通过UDP输出数据的，因为它是在C＃中更容易。

So it seems natural to me to write the data-intensive code in C/C++, and the GUI in C#. The GUI will be used for set-up/calibration/on-line monitoring (and possibly outputting of data via UDP, because it's easier in C#.

因此​​，首先，我倒是想看看是否有人同意，这将是去了。根据我的编程经验的方式（擅长的低C级算法和高层次的C＃GUI设计），它只是感觉不错。

So first, I'd like to see if anyone agrees that this would be the way to go. Based on my programming experience (good at low-level C algorithms, and high-level C# GUI design), it just feels right.

其次，我不知道去了解它的正确方法。我只是把一起在VS2005，一个解决方案，从C＃应用程序调用一些（外部的C）的DLL函数。并确保我能做到这一点，我写信给在DLL中一些全局变量，并从中读出：

Secondly, I'm not sure the right way to go about it. I just threw together a solution in VS2005, which calls some (extern "C") DLL functions from a C# app. And to make sure I could do it, I wrote to some global variables in the DLL, and read from them:

/** test.h **/
int globaldata;
extern "C" __declspec(dllexport) void set(int);
extern "C" __declspec(dllexport) int  get();

/** test.cpp **/
extern int data=0;
__declspec(dllexport) void set(int num) {
    data = num;
}

__declspec(dllexport) int get() {
    return data;
}

/** test.cs **/
[DllImport("test")]
private static extern void set(int num);

[DllImport("test")]
private static extern int get();

调用get（），然后设置（）工作正常（得到回报，我通过设置数字（））。

Calling get() and then set() work properly (get returns the number that I passed to set()).

现在，我知道你可以导出一个C ++类，但是它需要管理？这是如何工作的？我要对这个正确的方式？

Now, I know that you can export a C++ class as well, but does it have to be managed? How does that work? Am I going about this the right way?

感谢您的帮助！

*** ***编辑

*** EDIT ***

首先，谢谢的您梦幻般的答案为止！我总是用计算器...

First of all, THANK YOU for your fantastic answers so far! I'm always incredibly impressed with StackOverFlow...

我想一件事，我应该有更多的打，不一定是原始速度（这可以通过原型基准） 。有我更关心的一件事是垃圾回收器的不确定性的行为。该应用程序会的不的在执行垃圾收集宽容500ms的延迟。

I guess one thing I should have hit on more, was not necessarily raw speed (this can be prototyped and benchmarked). One thing that has me more concerned is the non-deterministic behavior of the Garbage Collector. This application would not be tolerant of a 500ms delay while performing garbage collection.

我所有的编码和纯C＃想这一点，但如果我事先知道了GC和任何其他非确定性.NET行为（？）会导致一个问题，我想我最好将时间花在C / C ++编码，并找出最佳的C＃接口。

I am all for coding and trying this in pure C#, but if I know ahead of time that the GC and any other non-deterministic .NET behavior (?) will cause a problem, I think my time would be better spent coding it in C/C++ and figuring out the best C# interface.

推荐答案

有没有理由，你可以不写高性能的代码的完全用C＃。

There is no reason that you can't write high performance code entirely in C#.

• 性能（ C＃编程指南）

波多黎各马里亚尼的性能博客（一个很好的资源）

的调整.NET应用程序性能

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