MFC Info

Qt 4.5 with Visual Studio 2008 (VC++ Express)

noreply@blogger.com (Anil) — Thu, 23 Jul 2009 03:07:18 PDT

Qt is a cross platform GUI toolkit from Nokia. Its SDK is available under an LPGL license, it means we can use it free of charge to develop proprietary, commercial, closed-source software (thanks to...

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C/C++/VC++ Interview Questions: Part 5

noreply@blogger.com (Anil) — Tue, 14 Apr 2009 02:18:26 PDT

Q : What is a heap ?Ans : Heap is a chunk of memory. When in a program memory is allocated dynamically, the C run-time library gets the memory from a collection of unused memory called the heap. The...

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C/C++/VC++ Interview Questions: Part 4

noreply@blogger.com (Anil) — Tue, 14 Apr 2009 02:18:10 PDT

Q. Name some pure object oriented languages.Answer:  Smalltalk, Java, Eiffel, Sather. Q. Name the operators that cannot be overloaded.Answer:sizeof . .* .-> :: ?: Q. What is a node...

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C/C++/VC++ Interview Questions: Part 3

noreply@blogger.com (Anil) — Tue, 14 Apr 2009 02:17:49 PDT

Q. What is an incomplete type?Answer: Incomplete types refers to pointers in which there is non availability of the implementation of the referenced location or it points to some location whose value...

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C/C++/VC++ Interview Questions: Part 2

noreply@blogger.com (Anil) — Tue, 14 Apr 2009 02:17:20 PDT

Q. What is a modifier? Answer: A modifier, also called a modifying function is a member function that changes the value of at least one data member. In other words, an operation that modifies the...

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C/C++/VC++ Interview Questions: Part 1

noreply@blogger.com (Anil) — Tue, 14 Apr 2009 01:54:19 PDT

Q: Is it possible to have Virtual Constructor? If yes, how? If not, Why not possible? A: There is nothing like Virtual Constructor. The constructor can’t be virtual as the constructor is a code which...

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C++ Portability Rules - 1

noreply@blogger.com (Anil) — Wed, 08 Apr 2009 04:59:16 PDT

8. Use the common denominator between members of a C/C++ compiler family. For many of the compiler families we use, the implementation of the C and C++ compilers are completely different,...

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C++ Portability Rules

noreply@blogger.com (Anil) — Wed, 08 Apr 2009 04:58:32 PDT

1. Be very careful when writing C++ templates. Don't use C++ templates unless you do only things already known to be portable because they are already used in Mozilla (such as patterns used by...

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C optimisations

noreply@blogger.com (Anil) — Tue, 07 Apr 2009 04:22:53 PDT

Using array indices If you wished to set a variable to a particular character, depending upon the value of something, you might do this : switch ( queue ) { case 0 : letter = 'W'; ...

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MFC Interview Questions & Answers - 3

noreply@blogger.com (Anil) — Fri, 03 Apr 2009 05:49:54 PDT

Que: What is the difference between GetMessage and PeekMessage ? Ans: GetMessage function waits for a message to be placed in the queue before returning where as PeekMessage function does not wait...

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MFC Interview Questions & Answers - 2

noreply@blogger.com (Anil) — Fri, 03 Apr 2009 05:49:11 PDT

Q:- What is thread & process?Ans:- Threads are similar to processes, but differ in the way that they share resources. Threads are distinguished from processes in that processes are typically...

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MFC Interview Questions & Answers - 1

noreply@blogger.com (Anil) — Fri, 03 Apr 2009 05:48:02 PDT

Q:- What is model and modeless dialog box ? Give some examples?Ans:- When we create Modal Dialog Box we can't move to other windows until this dialog is closed. For eg: MessageBox, where we can't...

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MFC Interview Questions & Answers - 0

noreply@blogger.com (Anil) — Fri, 03 Apr 2009 05:46:05 PDT

Q:- What is socket?Ans:- A "socket" is an endpoint of communication: an object through which your application communicates with other Windows Sockets applications across a network.The two MFC Windows...

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C++ Interview Questions & Answers

noreply@blogger.com (Anil) — Fri, 03 Apr 2009 05:43:56 PDT

Q: Is it possible to have Virtual Constructor? If yes, how? If not, Why not possible?A: There is nothing like Virtual Constructor. The Constructor can’t be virtual as the constructoris a code which...

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Encapsulation

noreply@blogger.com (Anil) — Fri, 03 Apr 2009 05:37:17 PDT

Encapsulation Think of encapsulation as a black box; data is sent to a method, a lot of work goes on using the data, of which you don't know or care about. An output is returned to the caller. That...

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Polymorphism

noreply@blogger.com (Anil) — Fri, 03 Apr 2009 05:34:40 PDT

Polymorphism Polymorphism is a simple concept that you understand right now, as it is prevalent through life. You are a person, which person is a base type and you are a more specific representation...

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Type Char Expected Input - Format of output

noreply@blogger.com (Anil) — Tue, 03 Mar 2009 22:29:37 PST

d Integer signed decimal integer i Integer signed decimal integer o Integer unsigned octal integer u Integer unsigned decimal integer x Integer unsigned hexadecimal int (with a, b, c, d, e, f) X...

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Arrays & Pointers

noreply@blogger.com (Anil) — Mon, 02 Mar 2009 02:43:25 PST

Arrays An array is a collection of objects of the same data type, allocated contiguously in memory. Individual objects in an array, called elements, are accessed by their position in the array. The...

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Member access

noreply@blogger.com (Anil) — Thu, 26 Feb 2009 04:22:09 PST

Member access determines if a class member is accessible in an expression or declaration. Suppose x is a member of class A. Class member x can be declared to have one of the following levels of...

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Abstract class

noreply@blogger.com (Anil) — Thu, 26 Feb 2009 01:57:04 PST

An abstract class is a class that is designed to be specifically used as a base class. An abstract class contains at least one pure virtual function. You declare a pure virtual function by using a...

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Virtual Function

noreply@blogger.com (Anil) — Thu, 26 Feb 2009 01:58:48 PST

A function call with the correct function definition at compile time. This is called static binding. You can specify that the compiler match a function call with the correct function definition at...

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Inheritance

noreply@blogger.com (Anil) — Thu, 26 Feb 2009 01:59:35 PST

Inheritance is a mechanism of reusing and extending existing classes without modifying them, thus producing hierarchical relationships between them. Multiple inheritance allows you to create a...

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Constructor & Destructor

noreply@blogger.com (Anil) — Thu, 26 Feb 2009 02:01:22 PST

Constructor :- Constructor creates an object and initializes it. It also creates V-Table for virtual functions. It is different from other methods in a class. Constructors are used to create, and...

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