Re: Convert Objects from an Arraylists to Double?

From:

"Ben Voigt [C++ MVP]" <rbv@nospam.nospam>

Newsgroups:

microsoft.public.vc.language

Date:

Mon, 4 Feb 2008 11:12:04 -0600

Message-ID:

<#n9$HD1ZIHA.600@TK2MSFTNGP02.phx.gbl>

I've tried this approach among others but no luck so far;

List< double > ^ list1 = pForm1.get_LineX_StartValueArray();
List< double > ^ list2 = pForm1.get_LineY_StartValueArray();
List< double > ^ list3 = pForm1.get_LineX_EndValueArray();
List< double > ^ list4 = pForm1.get_LineY_EndValueArray();

for( int i = 0; i < list1->Count; ++i )
{
g->DrawLine( System::Drawing::Pens::Red, list1[ i ], list2[ i ],
list3[
i ],
list4[ i ]);

}

Above code snippet generates a;
error C3699: '^' : cannot use this indirection on type 'std::list<_Ty>'

This one should have worked. Note that the error message mentions list,
small L. Do you have a typo in your code or a macro defining List to list
or some such? Maybe the compiler is just guessing at which class you meant.
Do you have "using namespace System::Collections::Generic;"? Otherwise you
can say "System::Collections::Generic::List<System::Double>^"

Don't use "using namespace std" in C++/CLI managed code, it's asking for
confusion. The number of times you want the standard library in a .NET
program is so small you can just explicitly say std::whatever.

I'm using VS 2008

Many thanks

Regards
//KC