I use these classes rather a time but never could make up a reason to decide
between declaring a member variable as a pointer or directly.
For instance
CIcon m_icon;

In a C++/CLR Windows Forms app I notice that there is only a header and no
.cpp for the form. Also event handler bodies are added by the IDE right to
the header.
What is the philosophy on this?

Compiling an older Visual C++ project with the .net compiler, enabling "use
managed extensions" I receive several of these errors, all seemingly having
to do with ATL template window classes.
Could anyone tell me under what circumstances this may happen?

I keep getting warning messages like these:
...\include\myfile.h(451) : warning C4251: 'MyClass::m_myvariable' : class
'CPtrArray' needs to have dll-interface to be used by
clients of class 'MyClass'

I have a bunch of mix mode projects in VS2003. Can I be sure that it will
compile in VS 2005?
Thanks a lot,
Boni

If I compile with /clr:safe, which is exactly meant by saying I can't
use "Native Types" in my code?  Is a native type something such as
float, short, or int?
Thanks,

1.) In C++/CLI, I have the following structures defined, which work as
unions:
[StructLayout(LayoutKind::Explicit)]
public ref struct One

Igor sorry for not being clear in my original question.
I have a valid handle to an icon control (type = ICON) for a propertysheet,
but when I use SetIcon, either MFC or ATL,
the icon is not displayed or refreshed, neither I get an error.

I know IMAPI supports WinXP..but what do you do in Windows 2000 case?
Thanks,
Tony

In Visual Studio 2005, how can I set my project to be a strict ANSI-C project
with absoloutly nothing else? I don't want my project to even compile if it
contains any C++ or non-ANSI code.

I have a valid handle to an icon, but when I use SetIcon, either MFC or ATL,
the icon is not displayed.
The window is a dialog and the same happens to a propertysheet window.
How can I solve this?

I work on a windows application. It uses component of a runtime. The runtime
is a cartographic runtime developpped in .net.
The problem is that some user doesn't have the runtime installed. Is it
possible to detect it during the execution of my program?

I just found out the following code compiles:
ref class ClassA
{
    public:

for example:
enum class SomeEnumType
{
 A1 = 1;

    I am not sure if it is even possible to do it from .NET itself. Is
there something like a waitable timer which can resume the system from
its hibernate or standby (S3: suspend to ram) mode. I'm trying to use C#
to create something that can "wake" the system up at a particular ...