I'm writing some code to scale a 32 bit RGBA image in C/C++. I have written a few attempts that have been somewhat successful, but they're slow and most importantly the quality of the sized image is not acceptable. I compared the same image scaled by OpenGL (i.e. my video card) and my routine and it's miles apart in quality. I've Google ...
I have been using PRETTY_FUNCTION to output the current function name, however I have reimplemented some functions and would like to find out which functions are calling them. In C++ how can I get the function name of the calling routine? ...
Can anyone point me in the right direction of some facial recognition libraries & algorithms ? I've tried searching/googling but i mostly find thesises and very little real software. ...
I have a set of objects which I iterate through, however I may decide during the iteration that one (or more) of those objects now need to be deleted. My code goes as follows: if( ! m_Container.empty() ) { for( typedefedcontainer::iterator it = m_Container.begin(); it != m_Container.end(); ++i...
Is there a way to use verbatim String literals in managed C++? Similar to C#'s String Docs = @"c:\documents and settings\" ...
All the member variables and member functions in my class ClassA are static. If a user is trying (by mistake) to create an object of this class, he receives a warning: "ClassA, local variable never referenced", because all the functions are static, so this object is never referenced. So, I want to prevent the user from trying to create...
Where I work, people mostly think that objects are best initialised using C++-style construction (with parentheses), whereas primitive types should be initialised with the = operator: std::string strFoo( "Foo" ); int nBar = 5; Nobody seems to be able to explain why they prefer things this way, though. I can see that std::string = "Fo...
I've used UPX before to reduce the size of my Windows executables, but I must admit that I am naive to any negative side effects this could have. What's the downside to all of this packing/unpacking? Are there scenarios in which anyone would recommend NOT UPX-ing an executable (e.g. when writing a DLL, Windows Service, or when targeting...
I have a QVariant object within a QTreeWidgetItem, how can I cast it to my own object? ...
I'm trying to convert my COM+ application from CBuilder 5 to CBuilder 2009 and I'm having a problem to compile it with CBuilder 2009. Anybody have any idea about it ? Error message: [BCC32 Error] txcoord.h(1182): E2015 Ambiguity between 'ITransaction' and 'Oledb::ITransaction' ...
Java and C# support the notion of classes that can't be used as base classes with the final and sealed keywords. In C++ however there is no good way to prevent a class from being derived from which leaves the class's author with a dilemma, should every class have a virtual destructor or not? On the one hand giving an object a virtual d...
I'm trying to set an invalid value to -1.. But I don't like magic numbers.. Anyone know where to find a set of common constants. I'm working in VS6 (ish). I'm trying to read a file from across a network, and I need a bad value for the total file size,so I know if I got valid info on it.. 0 is a valid size so I can't use that. Harper ...
Before I write my own I will ask all y'all. I'm looking for a C++ class that is almost exactly like a STL vector but stores data into an array on the stack. Some kind of STL allocator class would work also, but I am trying to avoid any kind of heap, even static allocated per-thread heaps (although one of those is my second choice). Th...
When the page displayed in our CDHtmlDialog does an Asp.Net AJAX UpdatePanel we get a navigate event, but everything after that seems to be lost. We don't have a document anymore or get any mouse events on the page. ...
How can I convert a bitmap to a byte array in c++ WITHOUT the .net framework? ...
How do you open a path in explorer by code in c++. I googled and couldn't find any thing but systems commands to do this, however, i dont want it to block or show the console window. ...
I am new to using Windows Forms in C++ (and just in general), and I am not exactly sure of the name or if it's even possible to do. Currently I am currently working on a school project in which we must make a program for an imaginary bookstore. I am trying right now to make a sort of list that shows what the "customer" is buying. I hav...
Why must class members declared as const be initialized in the constructor initializer list rather than in the constructor body? What is the difference between the two? ...
Hello. I'm using xslt transformer in my C++ Win32 application and several xsl files that have a common part that I would like to separate into another xsl file. All xsl files are stored as resources. The only way I encountered for xsl:include is using res:// protocol that does not work properly for xsl files (at least on two of my Windo...
I am looking for template/generator libraries for C++ that are similar to eg. Ruby's Erb, Haml, PHP's Smarty, etc. It would be great if I it would sport some basic features like loops, if/else, int conversion to strings, etc. Parameter passing to template rendering engine is also important if I could pass all of them in a hash map inst...