Here's a curious one. I have a class A. It has an item of class B, which I want to initialize in the constructor of A using an initializer list, like so: class A { public: A(const B& b): mB(b) { }; private: B mB; }; Is there a way to catch exceptions that might be thrown by mB's copy-constructor while still using the ...
Even if it requires manual input. Is there any good-enough option available? ...
I'm writing a library which is to be dynamically loaded in C++. I'd like to read argc and argv (for debugging reasons) from within my code, however I do not have access to the main function. Is there any way to retrieve the command line (both Windows and Linux solution would be nice). Thanks, Dan ...
So, in reading this site, it seems that the shop in which I work does a lot of things wrong and some things right. How can I improve the code that I work with from my colleagues? The only thing I can think of is to lead by example - start using Boost, etc. Any other thoughts? ...
I have an Open Source app and I have it working on Windows, Linux and Macintosh ( it's in C++ and built with gcc ). I've only tested it on a few different flavors of Linux so I don't know if it compiles and runs on all different Linux versions. Is there a place where I can upload my code and have it tested across a bunch of different sys...
I am using a Q3Table object and wanted to change the width of the vertical header column. Does anyone know how to do this? It seems i can only adjust the height of the header cell but not the width. Thanks ...
I have a simple C++ DLL that implements a few custom actions for a WiX installer. Debugging the custom actions is usually simple: put up a temporary dialog box at the beginning of the action, and attach to the process when the dialog box appears. But today, whenever I attach to the process, I get the "Microsoft Visual Studio is Busy" b...
Basically I have the following class: class StateMachine { ... StateMethod stateA(); StateMethod stateB(); ... }; The methods stateA() and stateB() should be able return pointers to stateA() and stateB(). How to typedef the StateMethod? ...
This question may sound fairly elemental, but this is a debate I had with another developer I work with. I was taking care to stack allocate things where I could, instead of heap allocating them. He was talking to me and watching over my shoulder and commented that it wasn't necessary because they are the same performance wise. I was a...
Currently I'm trying to erase a sequence of iterators from a set, however GCC's standard library seems to be broken because std::set::erase(iterator) should return the an iterator (next iterator), however in GCC it returns void (which is standard?) Anyways I want to write: myIter = mySet.erase(myIter); But GCC doesn't like it... So I...
Does C++ support 'finally' blocks? What is the RAII idiom? What is the difference between C++'s RAII idiom and C#'s 'using' statement? ...
I have the problem, to get a failed run-time check in Visual C++ 2008 because of casting a too big number to a smaller type. The failure is in an external dll, so I can not fix it there. So how can I switch off this run time check for an external project. ...
I am currently porting a lot of code from an MFC-based application to a DLL for client branding purposes. I've come across an unusual problem. This bit of code is the same in both systems: // ... CCommsProperties props; pController->GetProperties( props ); if (props.handshake != HANDSHAKE_RTS_CTS) { props.handsha...
Where can documentation be found for the features of GDB, and the debugging process, specific to debugging of Cell Linux programs mixing PPU and SPU code? ...
I have two overloads of a c++ function and I would like to set a breakpoint on one of them: 0:000> bu myexe!displayerror Matched: 00000000`ff3c6100 myexe!displayError (int, HRESULT, wchar_t *) Matched: 00000000`ff3c60d0 myexe!displayError (int, HRESULT) Ambiguous symbol error at 'myexe!displayerror' Heck I would be fine with setting b...
I noticed some code of a colleague today that initialized class variables in the initialization. However it was causing a warning, he says because of the order they are in. My question is why is it better to do variable initialization where it currently is and not within the curly brackets? DiagramScene::DiagramScene( int slideNo, QRe...
I have the following class in C++: class a { const int b[2]; // other stuff follows // and here's the constructor a(void); } The question is, how do I initialize b in the initialization list, given that I can't initialize it inside the body of the function of the constructor, because b is const? This doesn't work: a...
Hello world! I have a slight problem reading data from file. I want to be able to read wstring's, aswell as a chunk of raw data of arbitrary size (size is in bytes). std::wfstream stream(file.c_str()); std::wstring comType; stream >> comType; int comSize; stream >> comSize; char *comData = new char[comSize]; memset(comData, 0, comS...
I have an existing Windows C++ application that links to ATL. I need to open an existing Excel file and access some properties. One of the things I need to do is determine if the user is currently viewing the Excel file. We can assume that the user has Excel installed, although not sure which version. What is the C++ / COM code to at...
To pop up the UAC dialog in Vista when writing to the HKLM registry hive, we opt to not use the Win32 Registry API, as when Vista permissions are lacking, we'd need to relaunch our entire application with administrator rights. Instead, we do this trick: ShellExecute(hWnd, "runas" /* display UAC prompt on Vista */, windir + "\\Reg", "add...