I have a dll assembly compiler with the /clr flag as it contains ref classes
and traditional style C++ classes.
I want to write unit tests for the ref classes in that assembly. VS2005
allows me to author such a test, but at runtime I get the following exception

Is it possible to have a constructor REFUSE to be constructed? That is, can
one within a constructor check to see if I really want to be constructed,
and return a nullptr instead of a valid object address when a construction
is attempted? Note that 'in the old days', a call to ...

            I have created a dll  in C# . I have to use it as a COM
for my  Excel work sheet
while adding code for a worksheet ( it is an option in Microsoft Excel
that we can add  code for worksheets  to execute  while  using work

Consider the follow code snippet. Why doesn't it work?
// Initialize a CFont object with the characteristics given
// in a LOGFONT structure.
LOGFONT lf;

    I am working with a ICA32 citrix client from windows xp, where I
am trying to use some automation through citrix client so that I can
unmann a tedious file-copy through one of the published apps (Windows
Explorer). I've tried it through VB and found out that SendKeys wont

hi i kno in VB ud say, with Splash Screen Being the name of my second form
Dim frm as new Splash_Screen
frm.show
how do i do that in C++...ive tried this but it doesnt work

I am a novice in the .net platform. Please help in this.
I have a C++ application which, now will have to be integrated in to
ASP.net for a web application. I understand that .NET Framework
programs can access native code libraries by means of static DLL entry

This is possibly some other problem, but here goes anyway. I created a
'value struct'. I then created a stack semantic instance of it. I then
created a method that takes a pointer to such an instance, and changed one
of its components. I then tried this code, and it didn't change ...

Could anyone point me to a resource that will help me determine if a lib
file is a static lib or dynamic?  Moreover, is there a tool that will tell me
the interface?
Thanks,

    I'm not sure if this has been asked before so please pardon me if this
is a repeated question. Basically I have some performance critical
directshow codes which is implemented in native, unmanaged C++. I have
written a managed wrapper for it using C++/CLI. problem comes when I try

    I'd like to draw a circle on the screen using GDI+
I'm using the DrawEllipse method with width = height and I set the
SmootingMode to SmoothingModeAntiAlias but the circle is "squared".
Is there a way to draw a "smoothed" circle ?

I once had a function in which I could not set a breakpoint.  VS VC++ .net
2003 7.1 (native c++) would crash.  This particular function had about five
arguments.  Each argument was an STL container of some sort.  The "expanded"
name of the function (with all templates written out) ...

First time for writing the program it goes well but when rebuilding it
issueing that message :
Linking...
LIBCD.lib(crt0.obj) : error LNK2001: unresolved external symbol _main

Hi everyone..
    I was trying to implement callback fucntions in native codes in my
VC8 class, and referred to some online codes which use native class
nested within managed class. basically of the form,

 Within an MFC application that also has some WPF content embedded into
the UI (via HWndSource) I have a pointer to a CDC wich contains some
custom GDI drawing. So basically it is a piece of memeory with a bitmap.
How can I get this to be displayed in WPF (within the HWndSource) ...