Hi, How to free the memory if memory is allocation using memset. suppose, ulong m_ularr[]; //declaration in header file //In constructor we allocate memory as memset(m_ularr, 0, sizeof(m_ularr)); Kindly help me how to free the memory in destructor for this one.

Freda

When u create base class pointer as derived class using new, it first allocate memory for base class one by one, call their constructors, initialize their member variables , finally it call declared class constructor(here it is Class C). since fn s() is called in class A's Constructor, it invoke its own fn even though u declared it as virtual. A *ptr = new C(); if you define like this , A *ptr = new C(); ptr->s(); Class C's fn of s() will be invoked!

hemmalatha.g

I use twain.h in vc++ application for scanner operation. twain.h file contains n number of capabilities (like CAP_DUPLEXENABLED,ICAP_XRESOLUTION,ICAP_AUTOMATICROTATE etc) which are supported by scanner. kindly help me how to use CAP_ENDORSER and TWEI_ENDORSEDTEXT capabilities to do endorsement in the scanner.

sujtha

modified on Wednesday, December 9, 2009 5:13 AM