gcnew,

[dogbert1793]

Hello,

Does one need to delete pointers allocated with gcnew? Or does the
garbage collector do it?

I always though the garbage collector did it, but I saw this example
today on MSDN:

StreamReader^ sr = gcnew StreamReader( "TestFile.txt" );
try
{
String^ line;

// Read and display lines from the file until the end of
// the file is reached.
while ( line = sr->ReadLine() )
{
Console::WriteLine( line );
}
}
finally
{
if ( sr )
delete (IDisposable^)sr; // <-----DELETE HERE ???
}

[Jochen Kalmbach [MVP]]

Hi dogbert1793!

Does one need to delete pointers allocated with gcnew? Or does the
garbage collector do it?

gcnew =Garbage Collector NEW
--
Greetings
Jochen

My blog about Win32 and .NET
http://blog.kalmbachnet.de/

[Ben Voigt [C++ MVP]]

<do*********@yahoo.comwrote in message
news:11**********************@k35g2000prh.googlegr oups.com...

Hello,

Does one need to delete pointers allocated with gcnew? Or does the
garbage collector do it?

I always though the garbage collector did it, but I saw this example
today on MSDN:

StreamReader^ sr = gcnew StreamReader( "TestFile.txt" );
try
{
String^ line;

// Read and display lines from the file until the end of
// the file is reached.
while ( line = sr->ReadLine() )
{
Console::WriteLine( line );
}
}
finally
{
if ( sr )
delete (IDisposable^)sr; // <-----DELETE HERE ???
}

That's just calling Dispose... not freeing the memory.

Also, that example would be much better using stack semantics:

StreamReader sr("TestFile.txt");
String^ line;
while (nullptr != (line = sr->ReadLine()))
Console::WriteLine(line);
/* automatic cleanup by compiler for all exit paths, including exceptions */

[Mark Salsbery [MVP]]

In addition to Ben's reply, you may want to take a look at this...

Destructors and Finalizers in Visual C++
http://msdn2.microsoft.com/en-us/lib...97(VS.80).aspx

Mark

--
Mark Salsbery
Microsoft MVP - Visual C++
<do*********@yahoo.comwrote in message
news:11**********************@k35g2000prh.googlegr oups.com...

Hello,

Does one need to delete pointers allocated with gcnew? Or does the
garbage collector do it?

I always though the garbage collector did it, but I saw this example
today on MSDN:

StreamReader^ sr = gcnew StreamReader( "TestFile.txt" );
try
{
String^ line;

// Read and display lines from the file until the end of
// the file is reached.
while ( line = sr->ReadLine() )
{
Console::WriteLine( line );
}
}
finally
{
if ( sr )
delete (IDisposable^)sr; // <-----DELETE HERE ???
}