Lengran

You can programming while referring to the Unity manual or Google, it's fine and it's how I learned Unity. As a beginner you can expect that you remembered everything. After using it a lot, you will remember it naturally.

You are right, or maybe I should try to unify all my code in C++ or rewrite the opencv codes in c# natively. Anyway, thanks for your help!

Now I have two c++ projects, both works correctly. One is a simple imshow compiled with VS2010, another one is a camera frame processing program compiled with VS2017. But both of these projects can't be packed into a dll file.

I don't know why, the dll compiled in VS2010 can't be found by VS2017, I can't call the function from my C# program. I'll see if there is anything I can do tomorrow. It's middle in the night now at my place. I have to sleep.

OK. Here the code. It's quite simple. ----------------------------- When I tried to paste the codes, I realized that the dll is compiled in VS2017, but the standalone c++ program is compiled in VS2010. I should make a test to see whether the dll works if I compile it in VS2010.

Thanks for your advice! But I do have passed an image, size of which is greater than 0. In fact, at first this error happened when I try to pass my camera as a parameter, and I got exact the same error like this. So I tried to pass an image to see if the error is because the function won't accept camera as a parameter. But it looks like some other things is wrong. Actually the DLL I called in C# is directly adapted from a C++ source code with no change, which works successfully as part of a C++ project. Is it possible that this error is caused because I should make some change to the source code when I tried to make it to a DLL file which I didn't? (I'm new to OpenCV, so maybe my question is about some common sense which I don't know. ?)

Win + PrintScreen and it will be in your Screen Shots folders.

A website offering official links (same as the ones you get on MSDN) for all Microsoft products. MSDN I Tell You But I'm not sure whether they have a English edition.... For your convenience, the 6th folder on the left is for Operating System and I copied the Win XP Pro SP3 English edition's link as following. Retail Edition: ed2k://|file|en_windows_xp_professional_with_service_pack_3_x86_cd_x14-80428.iso|617756672|2A30BB63730F7887E1AC54363A8489C2|/ SHA1: 1C735B38931BF57FB14EBD9A9BA253CEB443D459 VL Edition: ed2k://|file|en_windows_xp_professional_with_service_pack_3_x86_cd_vl_x14-73974.iso|617754624|7D1E7466DF638674202DD8E7451C0B39|/ SHA1: 66AC289AE27724C5AE17139227CBE78C01EEFE40

1. Microsoft Imagine. If your school has a Microsoft Imagine subscription, you can get Visual Studio Enterprise edition here for free. 2. Microsoft Visual Studio Community edition on its official website. Community edition is free for personal use and you can easily download it on Visual Studio's official website. Hopes that can help you.

I'm currently working on a project, which is based on Unity engine, so I have to write it using C#. But I need to call a method written in C++, which does something using OpenCV. I tried to pack the c++ function into a dll and call it from C#, but I got an exception about imshow or something else. Anyone has any suggestion? Thanks a lot. Here's some images about the program and the exception.

What question? Is there any answer to it now? Sometimes I want to reply to some threads, but I might give up because of my terrible English. Worried about if it might be misunderstood or be offensive. Maybe I should write the following words on every reply I write. --------------------------- Sorry for my terrible English. Hope you can understand what I said.

I agree with you for the first two points and the X99 things. But the pricing things are quite different in different places around the world. I'm in China now. Let's take one of the most popular online shopping sites in China, JD.com as an example. (JD in China is just like the Amazon in the US) An i7 7700k costs 2799RMB, But a Ryzen 1700 is just 2309RMB and a Ryzen 1700X is 2809RMB (a lunch will cost more than 10RMB in China). Also, a motherboard support overclocking like B350 is also much cheaper than a overclock enabled Z270 motherboard. For people in China, Ryzen 1700(X) still has its advantage. For those who don't want to spend too much money on their computers, Ryzen provides a choice which enables people to spend less money and get a CPU with lower TDP, higher multi-thread performance (and maybe higher overall performance, if the news about easy overclock is true). It's really appealing. Of course, for those who have enough money, X99 is a better choice for high end computer. ---------------------------------------------------- All thing above are based on the price in China, where "dollar" is a "big" unit of money.? There's no doubt that people should make their own decision according to their own needs and buy whatever suit them best.

Not exactly. Ryzen 1700, 1700X, and 1800X they all can be overclocked. I've seen an article saying that, Ryzen 1700 can be easily overclocked to more than 4GHz and it runs very stable. So there won't be too much difference. And for those who need higher frequency, 1700X and 1800X will be their choice.

They are CPUs at different frequency. Ryzen has similar single core performance with Intel ones only when they are at the same frequency, or maybe a little bit better than intel ones, I think.

So excited to hear this. After so many years AMD finally brings us some good CPU again. Hope 1800X can beat the Intel i7 6950X, and keep the "higher performance lower price" thing for longer time!