I'm currently doing my Multimedia assignment where I have to create a new video using one video as a foreground and another as a background. OpenCV allows me to do just that: extracting images from each frame in video, processing them and putting the results back into a video format. However, OpenCV is only a computer vision library. Is ...
A typical forward iterator is expected to implement following methods: value_type& operator*(); value_type* operator->(); I'm writing a custom iterator for a custom container where user expects to see a value_type different from representation of the value inside a container. So when returning a value_type value to user I convert it f...
if (reader.is_lazy()) goto tldr; I have a background thread that does some I/O-intensive background type work. To please the other threads and processes running, I set the thread priority to "background mode" using SetThreadPriority, like this: SetThreadPriority(GetCurrentThread(), THREAD_MODE_BACKGROUND_BEGIN); However, THREAD_MODE...
Hi there. I've posted this on the ESRI support forum, but no one has come back with a solution as yet. Background: I'm maintaining a C++ map display application that makes use of ESRI ArcGIS components (version 9.3.1 SP1). It instantiates a Map object (esriCarto::Map), queries for the IActiveView interface, and calls Activate to pass ...
I make game Mario and I want when I use left key < , the character will turn his head to left :-? How can I implement that ? Thanks for reading this :) ...
Lets say i have a Shape object that has a constructor like this: Shape( width, height, radius, depth ) Now, I just have a silly rect so i dont need redius and depth... is it okey to do Shape myRect(50, 50, NULL, NULL) ? I know its not the best idea and I should use inheritance and stuff but this is the mess im in so can i use NULL...
I just found the existence of qt_noop() define in the qglobal.h as: inline void qt_noop() {} What's the point of it? ...
Hi, my question is: What is the best way to call MSWord from C++ I never did this before. I always used VB6 and the Word-COM-Library: C:\Program Files\Microsoft Office\OfficeXX\MSWORD.olb resp: "Microsoft Word XX.0 Object Library" how should I use/call Word from C++ (VS2010) ? should I use .NET ? (C++CLI) do you have a good step by ...
Hi, I am trying to convert a source from C++ to vb6: C++: static double mdArray[3][3]; static double mdArray2[3][3]; for (i = 0; i < 3; i++) for (j = 0; j < 3; j++) { double sum = 0; for(k = 0; k < 3; k++) sum = sum + mdArray[k][i] * mdArray[k][k]; mdArray2[i][j] = sum } VB6: dim mdArray(0 to 2, 0 to 2) as integer dim m...
How to get the UTC time in milliseconds under windows platform. I am using Standard library which give me UTC time in seconds, I want to get time in miliseconds, kindly give me the reference of any other library which give me the accurate UTC time in miliseconds. ...
Some of the GNU library code can be have enhanced debugging if the flag _LIBC is set. While using -D_LIBC when compiling gives the error message "/usr/include/gnu/stubs.h:7:3: #error Applications may not define the macro _LIBC" So how do you define this variable? ...
I'm trying to build a smaller version of Qt, I used the following configuration options: ./configure -qt-sql-mysql -no-qt3support -no-audio-backend -no-phonon -no-phonon-backend -no-opengl -no-script -no-scripttools -no-javascript-jit -no-webkit -no-svg -no-multimedia -fast After executing make, I eventually run into the following err...
This compiled on VS 2008, but it seems like non-standard usage of templates. template <class T> class Foo { public: void bar(Foo<int> arg) { // do some stuff here } // more code ... }; Is there an issue since the template specialization Foo<int> is contained within the definition of its own template class? ...
Why it is not allowed to overload "=" using friend function? I have written a small program but it is giving error. class comp { int real; int imaginary; public: comp(){real=0; imaginary=0;} void show(){cout << "Real="<<real<<" Imaginary="<<imaginary<<endl;} void set(int i,int j){real=i;imaginary=j;} friend comp operator=(comp &op1,cons...
Hi. I am trying to make a loop that loops through all different integers where exactly 10 of the last 40 bits are set high, the rest set low. The reason is that I have a map with 40 different values, and I want to sum all different ways ten of these values can be multiplied. (This is just out of curiosity, so it's really the "bitmanip"-...
I have the following C++ struct: typedef struct FormulaSyntax{ WORD StructSize; short formulaSyntax [2]; } FormulaSyntax; I have a DLL method which takes an instance of this struct. Here's what I've tried on the C# side: [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)] public struct For...
I'm new to GDI+ and I don't know how to draw to an Image. I've a matrix ( game map ) and tiles, Can I create an Image or a Bitmap, then I draw everything on it, so I can work with it likes an Image I load from resources. Thanks so much :) ...
Hello, I searched how to implement + operator properly all over the internet and all the results i found do the following steps : const MyClass MyClass::operator+(const MyClass &other) const { MyClass result = *this; // Make a copy of myself. Same as MyClass result(*this); result += other; // Use += to add other to t...
I am writing a virtual desktop application which utilises the DeferWindowPos API functions. The current method I am using is moving the windows off the screen if they're not on the current virtual desktop. However I know wish to also hide the windows that are off-screen so they do not appear on the task bar. I have attempted this by also...
Hi, I am using Visual C++, and I am trying to include a file that uses BYTE (as well as DOUBLE, LPCONTEXT...) , which by default is not a defined type. If I include windows.h, it works fine, but windows.h also defines GetClassName wich I don't need. I am looking for an alternative to windows.h include, that would work with VC++ and wou...