mfc, Member function and multithread

1. Multithread (MT) vs. Multithread DLL (MD) option

2. Multithread or Multithread DLL?

Hello,

I'm trying to create a worker thread for my VC++ program, and was
wondering whether I should be linking with the Multithread /MT or
Multithread DLL /MD option?  I'm not quite sure, in layman's terms,
what the difference is.

When I build with Multithread DLL, the linker complains about not
being able to find a bunch of "unresolved external symbols" associated
with nafxcwd.lib.

When I build with Multithread, it completes, but when I run, I'm
getting a "Debug Assertion Failed!" error message, associated with
thrdcore.cpp.

Any insight/help appreciated.

Robert

( modify address for return mail )

www.numbersusa.com
www.americanpatrol.com

3. change library from not-multithread to multithread RAD Studio 2007 - C++ Builder IDE

4. specialized member function takes precedence over generic template member function

Here is the compilable code, along w/ the error

#include<iostream>
#include<complex>
typedef std::complex<float> ComplexSingle;
using namespace std;
template<typename T> class X
{
private:
  T number;
public:
  X(T value)
  {
    number=value;
  }
  template<typename Other>  X(Other Y)
  {
    assign(Y);
  }
  template<typename Other> void assign(Other Y);


  T return_number()
  {
    return number;
  }
};

template<typename T>
template<typename Other> void X<T>::assign( Other Y)
{
  number=Y.return_number();
}

template<> template<typename ComplexSingle> void
X<float>::assign(ComplexSingle Y)
{
  number=norm(Y.return_number());
}
int main (void)
{
  //this works fine
  ComplexSingle a(2,3);
  X<ComplexSingle> A(a);
  X<float> B(A);


 //error
 //In member function `void X<T>::assign(Other) [with Other =
 //X<double>, T = float]':
 //ex1.cc:16:   instantiated from `X<T>::X(Other) [with Other =
 // X<double>, T = float]'
 //ex1.cc:45:   instantiated from here
 //ex1.cc:35: error: no matching function for call to `norm(double)'
  
  X<double> C(3.3);
  X<float> D(C);
  return 0;
}

5. Passing a member function as a parameter of a member function

6. Member function pointer to member function of another class

Hi,
I'm having huge syntax problem dealing with function pointers. Here's
what I'm doing:

I have 2 classes, ClassA and ClassB. ClassA owns an instance of
ClassB. What I want to do is pass a function pointer to a member
function of ClassB as a parameter to a member function of ClassA. I
don't want ClassA's member function to call ClassB's function directly
because ClassA can be used in 2 ways, one of which is a case in which
it does not create an instance of ClassB; hence by passing a function
pointer I can handle that case easily.

This is the code I have:

class ClassB {
  public:
    BOOL GetFlagX(void) { return m_bFlagX;};
  private:
    BOOL m_bFlagX;
};

class ClassA {
  public:
    typedef BOOL (ClassA::*FPAbortFlag)(void);
    FPAbortFlag m_fpAbort;

  protected:
    ClassB *m_pClassB;
    BOOL ClassAMemFcn(FPAbortFlag fpAbort);
};

In this case ClassA has new'd an instance of ClassB. What I want to do
is have ClassA's function pointer 'm_fpAbort' point to ClassB's
'GetFlagX' function. Can't seem to figure out the syntax for this.

I did get the following to compile but it wasn't pointing to the
member function associated with ClassA's instance of ClassB:

m_fpAbort = (FPAbortFlag)(&(ClassB::GetFlagX));

How do I do this?

Thanks in advance,
Ashish.

7. Member function pointers to member functions with default arguments

8. pointer to member function and pointer to constant member function

Are these pointers the same?

Fraser.