What is CALLBACK? How it work? what is the advantage of CALLBACK, please explain with an example

Hi All, I have created one MFC Dialog Based application.now if i am running the application its working fine,instead of closing he application i minimized the application,if i run the application again,i am getting the Dialog. I want to prevent the calling of application multiple times. please give me the code and let me know in which method i need to make changes. Praveer

HP,

Hi All, i am new for VC++ SDK. i want to get the IP Address of all the External device connected with my local machine.please give the code Regards, Praveer

TCS, Tech Mahindra,

Q1. A. What is unary operator? List out the different operators involved in the unary operator. B. What is an adjust field format flag? Q2. A. Distinguish between a # include and #define. B. Can a list of string be stored within a two dimensional array? Q3. A. Explain how a pointer to function can be declared in C++? B. List the merits and demerits of declaring a nested class in C++? Q4. A. What are the syntactic rules to be avoid ambiguity in multiple inheritence? B. Explain the operation of overloading of an assignment operator. Q5. A. Explain how the virtual base class is different from the conventional base classes of the opps. B. Explain how an exception handler is defined and invoked in a Program. Q6. A. What is a binary file? List the merits and demerits of the binary file usagein C++. B. Write short notes on Text Manipulation Routines. C. Write bites in Turbo c++ Header ("Include") Files.

ABC, HCL, Infosys,

What is the difference between Struts and JSF? Pls list some most suitable differences.

what is the difference between compiling and building?

Will there be any difference in the image buffer size if it is loaded in from CString to LPTSTR using GetBuffer()? lptstr = string.GetBuffer(0);

How to update windows title bar dynamically?

HCL,

Explain in sort What is CTargetObject?

How to find the mouse entering an image?..while entering need to display next image...

What is primitive and non-primitive application?

HCL,

How you find memory leaks?

ABB,

How can update edit control data of an executing application from other application?

HP,

If application hangs while SendMessage is waiting for the result, how you handle it?

What is stack size in win32 program?

HCL,