i'm trying to convert an md5 string (base 16) to a base 62 string in c++. every solution i've found so far for converting to base 62 only works if you can represent your number as a 64 bit integer or smaller. an md5 string is 128 bits and i'm not getting anywhere with this on my own. should i just include a bigint library and be done ...
How I can submit string to webform, if I using QWebKit, c++? <div style="text-align:center;"> <form id="postform" method="post" action="javascript://" onsubmit="chat.add();"> <div> <script type="text/javascript"> <input type="button" onclick="chat.add();" class="chat_button" value="Send!" /> ...
Can someone give me a real time need for enum data structure. As in example in some real system where it can be used? And what is the reason for having such a data structure. The example given was enum colors_t {black, blue, green, cyan, red, purple, yellow, white}; But i felt, this is similar to string array. I am trying to underst...
Hii , I am new to C++ programming and need some help regarding the code i wrote below.... Its a basic exception handling program #include<iostream> class range_error { public: int i; range_error(int x){i=x;} } int compare(int x) { if(x<100) throw range_error(x); return ...
Update: Albert D. Kallal has kindly started the discussion off, and to get some more opinions I'm adding a bounty. This is a nontrivial question about maintenance of a legacy application myself and two other developers support. We are not the original developers, and the code base is 300,000 lines of MFC and business logic tightly co...
Let's say I have a class box, and an user can create boxes. How to do it? I understand I create objects by className objectName(args); but how to do it dynamically, depending on the user input? ...
I am having issues accessing a static property in a class. I am getting the following error: shape.obj : error LNK2001: unresolved external symbol "public: static class TCollection<class Shape *> Shape::shapes" The definition of the class is: class Shape { public: static Collection<Shape*> shapes; static void get_all_instanc...
First, note that this is just a learning exercise for me. The intent is to produce a .NET messagebox using nothing but pure C++ (not C++/CLI) and late binding as necessary. This works fine with just a title and text in the messagebox. However, when I try to specify buttons I get back 2147942487 "The parameter is incorrect". On the .NET...
NOTE: Please read the whole thing before posting, you'll see why. So I have an OpenGL/WinAPI application. I'm doing what you would expect, by doing cycles of handling messages, then rendering a frame, handling messages, rendering frame... The trouble is, when I resize or move a window, the screen freezes, and it can look quite ugly. I ...
Hi, Trying to read the sizes of disks that were created in multiple sessions using GetDiskFreeSpaceEx() gives the size of the last session only. How do I read correctly the number and sizes of all sessions in C/C++? Thanks. ...
I need to Erase the file contents from a selected Point (C++ fstream) which function should i use ? i have written objects , i need to delete these objects in middle of the file ...
Today i got a idea to make an ThreadQueue for C++, for my Server Application. unsigned int m_Actives; // Count of active threads unsigned int m_Maximum; std::map<HANDLE, unsigned int> m_Queue; std::map<HANDLE, unsigned int>::iterator m_QueueIt; In an extra Thread i would to handle these while: while(true) { if(m_Actives != m...
Hi, This is a homework, thus I hope you guys dont give me the direct answers/code, but guide me to the solution. My problem is, I have this XXX.html file, inside have thousands of codes. But what I need is to extract this portion: <html> ... <table> <thead> <tr> <th class="xxx">xxx</th> <th>xxx</th...
Hi all, I have a MFC application which has its GUI implemented as part of the executable code (view-doc architecture etc.) My application uses some DLLs I worte. Now I have to write another DLL which I know it has to have a GUI as well. My question/uncertainty is should I implement the GUI as part of the main application (main GUI) an...
Hi! I just want to ask your ideas regarding this matter. For a certain important reason, I must extract/acquire all function names of functions that were called inside a "main()" function of a C source file (ex: main.c). Example source code: int main() { int a = functionA(); // functionA must be extracted int b = functionB(...
A few questions about the C++ preprocessor: how to make the preprocessor go to a new line into the preprocessoring code? how to make the preprocessor insert a tab character or multiple spaces into the preprocessoring code? how to make the preprocessor insert comments into the preprocessoring code? ...
Hi, I have a very basic doubt, In C++ does there exist a data structure for each Type which stores static data and methods defined by that type, similar to the data structure that exists in .NET for every Type. Regards, Jeez ...
I have built the Poco C++ library on Mac. When inspecting the built output files I notice that their load paths are absolute paths that point to the build directory. For example: $ otool -L libPocoFoundation.dylib libPocoFoundation.dylib: /Users/francis/orig/poco-1.3.6p2/lib/Darwin/i386/libPocoFoundation.9.dylib (compatibility versi...
I'm working on a number crunching app using the CUDA framework. I have some static data that should be accessible to all threads, so I've put it in constant memory like this: __device__ __constant__ CaseParams deviceCaseParams; I use the call cudaMemcpyToSymbol to transfer these params from the host to the device: void copyMetaData(C...
Hello, I have such classes: class Base { private: bool mEnabled; public: bool getEnabled() { return mEnabled; } }; class First : public Base; { // ... }; class Second : public Base { Second() { // I have to check First::mEnabled } }; class Manager { First obj1; Second obj2; }; I have some class manager...