gcnew
gcnew creates an instance of a managed type (reference or value type) on the garbage collected heap. The result of the evaluation of a gcnew expression is a handle (^) to the type being created.
Remarks
Memory for managed types is allocated by gcnew, and deallocated by the garbage collector. Memory for native C++ types is allocated and deallocated by the new and delete operators.
If gcnew is unable to allocate memory, it throws an OutOfMemoryException.
Example
// mcppv2_gcnew_1.cpp
// compile with: /clr
ref struct Message {
System::String ^ sender, ^ receiver, ^ data;
};
int main() {
Message ^ h_Message = gcnew Message ;
}
Use gcnew to create a boxed value type for use like a reference type.
// example2.cpp : main project file.
// compile with /clr
#include "stdafx.h"
using namespace System;
value class Boxed {
public:
int i;
};
int main()
{
Boxed^ y = gcnew Boxed;
y->i = 32;
System::Console::WriteLine(y->i);
return 0;
}
32
Requirements
Compiler option: /clr