I've debugged my other problem back, to the MyMesh constructor. In this code: if (hollow) { numTriangles = n*8; triangles=new MyTriangle[numTriangles]; if (smooth) numSurfacePoints=n*8; else numSurfacePoints=n*12; surfacePoints=new SurfacePoint[numSurfacePoints]; }else { numTriangles = n*4; triangles=new MyTr...
hello, what is the preferred method to pass a string between C++ and C#? i have a c++ class where one of the functions takes a char const * const as parameter. how would i call this function in C#? just using a c#-string doesnt seem to work as the function in C# requires a sbyte* C++ class: public ref class MyClass { public: void S...
I've following class: class A { public: // ctr and etc ... A* clone(B* container); }; Now, I've a vector<A*> availableObjs populated already. I want to call clone on each of those, so and insert cloned objects into a new container clonedObjs of type vector<A*>. I'm trying following - but it doesn't compile: transform(availableObjs....
What are the effects of incorrectly setting the netmask? I have a C++ application that sets the network mask of a device. If the netmask is set incorrectly, tftp doesn't seem to work properly. Why would this happen? What other problems occur when the netmask is not properly set for a device/PC? ...
Hello, Is there a way to loop through all MFC Child Dialogs, MDI frames and etc? And is there a way to find out which dialog or window I am looping through? Any answer would be appreciated! ...
I'm building an application which uses Mysql, I was wondering what would be the best way to manage the connection to the actual Mysql server? I'm still in the design phase, but currently I have it Connecting (or aborting if error) before every query and disconnecting after which is just for testing as right now I'm only running 1 query ...
I'm about to perform profiling to application. I have vagrind, but kcachegrind is not installed. Tryied to compile without success. Where it can be obtained from for RHEL 5.1? ...
Hi all, I am implementing a cross platform scripting language for our product. There is a requirement to detect and properly handle stack overflow condition in language VM. Before you jump in and say make sure there is no stack overflow in the first place, re-read my first sentence - this is a scripting language and end users may write ...
I have a MFC extension DLL which I want to use in a C# application. The functions I'm exposing are C functions, i.e. I'm exporting them like this extern "C" { __declspec(dllexport) bool Initialize(); } The functions internally uses MFC classes, so what do I have to do to use the DLL in C# using P/Invoke. Secondly, I want to use func...
Hi all, I have a large matrix M implemented as vector<vector<double> with m rows, i.e. the matrix is a vector of m vectors of n column elements. I have to create two subsets of the rows of this matrix, i.e. A holds k rows, and B the other m-k rows. The rows must be selected at random. I do not want to use any libraries other than STL...
I have the following code in my program: EnterCriticalSection(&critsec[x]); // stuff LeaveCriticalSection(&critsec[x]); It works fine 99.999% of the time but occasionally a handle seems to get left behind. Now I have done the obvious things like make sure that x did not change value between the enter and make sure that there isn...
My application is mostly Java but, for certain calculations, uses a C++ library. Our environment is Java 1.6 running on RedHat 3 (soon to be RedHat 5). My problem is that the C++ library is not thread-safe. To work around this, we run multiple, single-threaded "worker" processes and give them work to do from a central Work Manager, also...
I have a LNK2019 problem when trying to use some DLL in my project. Details: I have a DLL project called dll1; that compiled just fine (using __declspec(dllexport)) in order to export the class inside dll1 (for dll2 usage). I have another DLL project dll2 that uses dll1's functionality. I specified the *.dll1.lib file path inside the...
Is there a way to redirect c++ output inside the code? The situation is this, I am using some external .cpp and .h files which use printf's to put warnings to console. I wish to redirect "only" these outputs (not mine) to a file "without" modifying their code. So; in my program, I can redirect ouput to a file, and when I will put some o...
I'm using async io on linux with rtkaio library. In my tests everything works perfectly, but, in my real application i see that aio_write which is supposed to return very fast, is very slow. It can take more than 100 milis to write a 128KB to a O_DIRECT padded file. Both my test and the application use same I/O size, i check on the same ...
Hi, I have a function foo() in dll A.dll, whose definition is as follows vector<CustomObject> foo() { vector<CustomObject> customObjectCollection; //code which populates customObjectCollection goes here return customObjectCollection; } I am referring this method vector foo() of dll A from exe B When i make a call...
There are a lot of examples how to make HTTP request to a server and get reply via boost.asio library. However, I couldn't find a good example of simple interface and wondering, if I need to implement it myself. For instance, if I need to get content of http://www.foo.bar/path/to/default.html, is there any way to get a content without v...
Hello, I'm looking for an explanation for how the recursive version of pascal's triangle works The following is the recursive return line for pascal's triangle. int get_pascal(const int row_no,const int col_no) { if (row_no == 0) { return 1; } else if (row_no == 1) { return 1; } else if (col...
I am a C programmer,now trying to write c++ code.I heard string in C++ was better than char* in terms of security, performance, etc,but sometimes it seems that char * is better choice.Someone suggest that programmer should not use char * in C++ becuase we could do all things that char * could do with string, and its securer and faster. ...
I am using the boost filtering stream object to read gzipped files. Works great! I would like to display a progress bar for the amount of the file that has been processed. I need find the input uncompressed file size. Does the gzip decompressor have access to the original file size from the gzipped file? I couldn't find it on the boo...